30 results about "Ball valve" patented technology

The invention discloses an HVDC (high-voltage direct current) converter valve water cooling system. The system comprises a main circulation loop, a deionizing loop and a water supplementing branch, wherein the main circulation loop and the deionizing loop are communicated through an electric ball valve, and the deionizing loop and the water supplementing branch are communicated through an electric ball valve; the main circulation loop comprises a main circulation pump, a closed cooling tower, a main circulation filter, an inlet valve temperature transmitter, a main circulation flow transmitter, a converter valve group, an outlet valve temperature transmitter and a degassing tank which are sequentially communicated through pipelines; power-driven three-way valves are further mounted between the main circulation pump and the closed cooling tower. According to the HVDC converter valve water cooling system, flow distribution can be performed according to cooling capacity of different converter valves, different heat dissipation requirements are met respectively, the number of water cooling systems can be effectively reduced, the operation difficulty is reduced, and the cost is saved.

The invention provides a pretreatment device and a pretreatment method for transformer oil. The pretreatment device comprises an electromagnetic valve, a ball valve, an oil tank, an oil cylinder, a circulating pump, a vacuum pump, an oil-gas separation chamber, a pressure sensor, a stepping motor, an air and nitrogen interface, an oil inlet and an oil outlet, wherein the oil inlet is connected with the oil tank, the oil cylinder and the circulating pump through four-way pieces, the oil cylinder is respectively connected with the oil tank, the oil-gas separation chamber and the pressure sensor, the ball valve is arranged between the oil tank and the oil cylinder, a piston of the oil cylinder is fixedly connected with the stepping motor through a mechanical device, the bottom of the piston is connected with the oil outlet, and the oil-gas separation chamber is connected with the air and nitrogen interface, and connected with the vacuum pump through the electromagnetic valve. According to the pretreatment device and the pretreatment method, the transformer oil is pretreated by introducing three degassing methods such as vacuum atomization degassing, air cleaning and nitrogen cleaning, so that the deficiency of cleaning and degassing effects of various methods can be made up, and residual gases dissolved in original transformer oil can be eluted efficiently.

The invention discloses an experiment apparatus having a certain pressure adsorption state by quantitative addition of moisture in coal body. The experiment apparatus comprises two high pressure steel cylinders, the high pressure steel cylinders are connected with gas filling pipelines through a balance tank, the quantity of gas filling pipeline is three, and the gas filling pipelines are respectively connected with a first coal sample pot, a reference pot and a second coal sample pot, the first coal sample pot and the second coal sample pot respectively pass through a high pressure water-injection pipeline and is connected with a high pressure ball valve, a non return valve, a non return valve, a metering pump and a liquid injection pump in order, the first coal sample pot and the second coal sample pot respectively pass through a dispersion pipeline to connected with a fixed space, the pressure sensors are arranged on the upper part of the dispersion pipeline and in the fixed space, and a dispersion valve is arranged on the pipeline. The experiment apparatus can accurately control the liquid feeding amount, realizes the high pressure liquid feeding, besides water injection, realizes whole-process computer control, and has the advantages of high control precision and high experiment result accuracy, can simulate complete and real well coal body environment, and can fully satisfy the requirement of a liquid feeding experiment for coal body under the certain pressure adsorption state.

A powder valve is propose which is simple in structure and small in size, which can prevent powder from getting stuck in the valve, and can withstand high feed pressure. The valve includes a valve casing 21, a valve shaft 25, and a valve body 22 mounted in the valve casing 21 and supported by the valve shaft 25. The valve body 22 has a spherical outer surface 27 configured to be brought into contact with a valve seat 23 of the valve casing 21 to close the valve. The valve body 22 is formed with a communication hole 26 extending in a direction perpendicular to the valve shaft 25 so that when the valve body 22 is rotated about the valve shaft 25 in either of two opposite directions from the closed position, the valve is configured to open through the communication hole 26. The communication hole 26 is open on the back side of the valve body 22 over the entire length thereof. With this arrangement, it is possible to ensure the advantages of a ball valve, i.e. full-bore properties and high rigidity. Since the pressure of powder flowing through the communication hole 26 acts on the inner periphery of the valve casing 21, the flow of powder blows off and removes any powder which could otherwise get stuck on the inner periphery of the valve casing 21. By rotating the valve body 22 in both directions, powder can be removed on both sides of the valve shaft 25.

The invention provides a pneumatic two-fluid grouting pump, and belongs to the technical field of electromechanical engineering equipment. The pneumatic two-fluid grouting pump is characterized in that a filter is connected with an air inlet ball valve which is connected with an air motor, the air motor is connected with a piston plate, the piston plate is connected with more than two pistons, the air motor is arranged on a piston frame, all the pistons are connected in plunger pump bodies, the plunger pump bodies are arranged on the piston frame and correspond to the pistons, elbows are arranged at the liquid absorption ends of t plunger pumps, the pump liquid ends of the plunger pumps are connected with a four-way pipe, a shock-proof pressure gage and the ball valve are connected to the four-way pipe respectively, a left high pressure hose and a right high pressure hose are connected to a Y-shaped three-way pipe which is further connected with a mixing pipe, and the mixing pipe is connected with an injection pipe. The pneumatic grouting pump is fully pneumatic, and single liquid grouting and two-fluid grouting can be conducted. The pneumatic two-fluid grouting pump is adjustable in pressure, simple in structure, stable and reliable in performance, long in service life, small in size, light in weight, flexible, reliable, wide in application range, convenient to move and transport, and suitable for frequently-moved multi-point grouting operation.

The invention discloses a multi-well wellhead dosing device with a backflow self-protection multichannel solenoid valve terminal, and belongs to the field of wellhead dosing for cluster well groups in oil fields. The device at least comprises a dosing box, a control cabinet, the multichannel solenoid valve terminal, a high-pressure metering dosing pump, a pressure gauge, related pipelines and related control circuits; the multichannel solenoid valve terminal at least comprises a distribution valve terminal base, high pressure solenoid ball valves, a liquid return port and a liquid inlet; the liquid inlet and the liquid return port are integrated on one distribution valve terminal base; a plurality of high pressure solenoid ball valves are arranged symmetrically by taking a perpendicular center line of the distribution valve terminal base as an axis. Through the multichannel solenoid valve terminal with a pressure adjusting protective valve, the multi-well wellhead dosing device has a pressure protection function. When the pressure of a certain well is abnormal, the pressure adjusting protective valve can be automatically opened to form a circulation loop, an agent is prevented from flowing back into the solenoid valves and the dosing pump, and remote auto-control wellheads of the cluster well groups in the oil fields work safely without fault in the dosing process.

The invention discloses energy-saving non-negative pressure equipment. The equipment comprises a water supply main pipe, a voltage stabilization tank and a water tank, wherein a double-valve-position floating ball valve is arranged on a pipe body, the voltage stabilization tank is connected to the part, on the front part of the double-valve-position floating ball valve, of the water supply main pipe, the voltage stabilization tank is connected with a first water pump for supplying water to a water pipeline, the voltage stabilization tank is used for keeping the water inlet pressure of the first water pump stable, the water tank is connected with the water supply main pipe and arranged behind the double-valve-position floating ball valve, the double-valve-position floating ball valve can be opened or closed according to the liquid level in the water tank, the water tank is connected with a second water pump, and the second water pump is used for pumping water in the water tank to the water pipeline of a user. The invention discloses a design method of energy-saving non-negative pressure equipment. According to the secondary water supply energy-saving device and the design method, the supply and demand parties can be integrally optimized, the benefits of water supply enterprises are protected, the operation electric charge of a box-type pump station is saved, and social resources are saved.

The invention discloses a top assembling type ball valve capable of achieving on-line disassembly and assembly. The top assembling type ball valve comprises a valve body, a valve deck, a ball body, valve seats, a valve rod and a valve driving device. The outer circumferential surface of each valve seat is of a high-low stepped shape. The diameter of an inner end stepped surface of each valve seat is smaller than that of an outer end stepped surface of each valve seat. Sealing rings are arranged between the outer end stepped surfaces of the valve seats and the valve body. Pressing plates are arranged between the inner end stepped surfaces of the valve seats and the valve body in a clamping mode. The sealing rings are respectively arranged between the pressing plates and the inner end stepped surfaces of the valve seats and between the pressing plates and the valve body. Through holes are formed in portions, corresponding to the valve seats, of the valve body. The inner ends of the through holes are communicated to the inner end stepped surfaces of the valve seats. Sealing pieces are fixedly arranged at the outer ends of the through holes. Airtight cavities are respectively formed between the through holes, the inner end stepped surfaces of the valve seats, and the pressing plates. By the adoption of the structure, the ball valve can achieve on-line disassembly, assembly and maintenance and facilitates ball valve on-line operation of a user.

The invention discloses a capsule type water quantity adjusting device with a discharge door device with a large opening degree. The capsule type water quantity adjusting device comprises a sleeve, two support frames, a balloon, a conveying passage body, a feeding unit, a water supply unit, a discharge door device, a material pumping mechanism and a two-position one-way switching ball valve, wherein the sleeve is internally provided with the front and rear support frames, and the balloon is arranged in the middle of the front side face of the rear support frame; the discharge door device of which the front end communicates with the balloon is arranged on the rear support frame; the conveying passage body communicating with the output end of the discharge door device is arranged on the lower wall body of the sleeve; a conveying passage is arranged on the rear support frame, one end of the conveying passage communicates with the balloon, and the other end of the conveying passage penetrates through the upper end surface of the rear support frame; and the output end of the two-position one-way switching ball valve penetrates through the upper wall body of the sleeve and communicates with the upper end of the conveying passage. Compared with the prior art, the capsule type water quantity adjusting device is small in adjustment abrasion, the sealing is high, reliability and durability are achieved, processing is carried out by adopting a part of natural materials, and the discharge door device is reliable in sealing, and has large opening degree and long service life.

The invention discloses a small artificial bionic blood vessel perfusion fluid pressure testing system and method. The testing system comprises a liquid storage tank, a perfusion bioreactor and the like, a tested artificial bionic blood vessel is arranged in the perfusion bioreactor, and two ends of the tested artificial bionic blood vessel are respectively connected with Luer taper through metaldispensing needles; a water suction port of a self-priming pump communicates with a liquid storage bottle, a water outlet of the self-priming pump is divided into two paths through a first ball valve,one path communicates with the liquid storage tank through a first pressure transmitter, the other path communicates with the Luer taper at one end of the tested artificial bionic blood vessel through a second ball valve, and the Luer taper at the other end of the tested artificial bionic blood vessel communicates with the liquid storage tank through a second pressure transmitter and a third ballvalve. According to the testing method, liquid pressure is set for the testing system to serve as a testing pressure, the tested artificial bionic blood vessel is connected into the system, it is tested whether the artificial bionic blood vessel can be kept complete or not under the set pressure, the phenomena of damage, leakage and the like, the testing system is small in size, and the testing method and operation are simple.

The invention relates to the technical field of paint dipping, and discloses a vacuum pressure paint dipping device. The vacuum pressure paint dipping device comprises a placement groove formed in theground, a steel platform is fixedly connected between the inner walls of the placement groove, a paint dipping tank is fixedly connected to the upper surface of the placement groove through the steelplatform, a first connecting pipe is fixedly connected to the outer surface of the paint dipping tank, two pneumatic ball valves are fixedly connected to the outer surface of the first connecting pipe, a safety valve is fixedly connected to the outer surface of the first connecting pipe, two electric contact vacuum pressure gauges are fixedly connected to the outer surface of the first connectingpipe, and a pneumatic butterfly valve is fixedly connected to the outer surface of the first connecting pipe. The vacuum pressure paint dipping device is used for dipping a dry-type transformer withinsulating paint, a workpiece in the paint dipping tank is vacuumized, the insulating paint is input into the paint dipping tank from a paint storage tank by utilizing the pressure difference betweenthe paint dipping tank and the paint storage tank, and then a certain pressure is applied, so that liquid is fully dipped into a gap in the surface of the workpiece, and the working quality is improved.

The embodiment of the invention discloses an elastic balance mechanism and an elastic balance type double-acting valve. The elastic balance mechanism may comprise an elastic balance cylinder, a valvecylinder and a power source providing assembly. According to the elastic balance mechanism, when a power source is stable, an elastic piece keeps compressed under the action of the elastic balance mechanism, and a pneumatic valve or an oil pressure valve has normal double-acting opening and closing functions; when the power source is unstable or lost, the elastic piece is expanded immediately under the action of the elastic balance mechanism, and the pneumatic valve or the oil pressure valve is at a fault closing (FC ) position or a fault opening (FO) position; and at the moment, in cooperation with the power-on position and the power-off position of a solenoid valve, the valve can select multiple states such as fault positions of FLC, FLO, EFC and EFO. The elastic balance mechanism in theembodiment can be widely applied to valves such as a stop valve, a butterfly valve, a ball valve, a gate valve and a regulating valve, and is used for coping with the restriction of dangerous workingconditions of air shortage of double-acting valves and the risk of fatigue damage to springs of single-acting valves.

The invention discloses a non-retention all-inclusive three-piece ball valve, which includes a left side cover, a flange, a right side cover, a valve body, a high-pressure pipe installation groove, a spherical valve plate and a sealing ring. Flanges are welded on the surface of the cover and the valve body, a valve body is provided on one side of the left side cover, a right side cover is provided on one side of the valve body, the left side cover, the right side cover and the valve body are three The other is fixedly connected by the bolts that pass through the flange, the upper part of the valve body is provided with a valve stem installation groove, the valve stem is installed inside the valve stem installation groove, and the top of the valve stem extends out of the valve stem installation groove, The bottom surface of the valve stem is welded with a valve block, and the diameter of the present invention gradually increases from the center of the spherical valve plate to both ends of the left side cover and the right side cover through the fluid channel, so that the fluid remaining in the fluid channel is under the action of gravity. The fluid gradually flows out of the valve body, and the fluid can be flushed out of the fluid channel by injecting high-pressure gas into the gas injection seat.

An improved ball valve on a pump system comprising a ball valve having a ball, a first end arranged for operatively engaging the pump system, a first axial port on the first end sufficiently narrow to prevent the passage of the ball, a ball-seat disposed on the first end with a plurality of ports annularly disposed around the ball and extending through the ball-seat, a second axial port on a second end sufficiently narrow to prevent the passage of the ball, and the second end of the ball valve arranged for connecting to the pump system. The improved ball valve further comprising a ball seat without a first axial port. The improved ball valve further comprising a plurality of ports extending outwardly from the first axial port and extending through the ball-seat.

The invention discloses a tee joint connector which is used for injecting fluid into an air conditioning unit. The tee joint connector comprises a first maintaining valve, a second maintaining valve and a ball valve which are welded together, a first loudspeaker-shaped thread connector and a second loudspeaker-shaped thread connector. Inner channels of the valves are communicated with each other. A first connecting opening of the first maintaining valve, a first connecting opening of the ball valve and a first connecting opening of the second maintaining valve are welded together. The first loudspeaker-shaped thread connector is communicated with a second connecting opening of the ball valve through a middle pipe fitting. The second loudspeaker-shaped thread connector is communicated with a second connecting opening of the first maintaining valve through a middle pipe fitting. In the tee joint connector, the first loudspeaker-shaped thread connector and the second loudspeaker-shaped thread connector are connected with the ball valve and the first maintaining valve through the middle pipe fittings respectively instead of welding, common loudspeaker-shaped thread connectors can be directly selected in the market to be used as the first loudspeaker-shaped thread connector and the second loudspeaker-shaped thread connector, accordingly, machining nuts are avoided, the thread connectors are matched with a steel bottle and an injection opening of the air conditioning unit, and correspondingly, time and labor are saved.

The invention relates to gasoline filter pulse testing equipment. It comprises No. 1 pressure liquid storage can controlled by No. 1 pneumatic control circuit and No. 2 pressure liquid storage can controlled by No. 2 pneumatic control circuit, entering into filter element through oil hydraulic bridge circuit and ball valve, pressure aperture controlled by pressure transducer transmitting the electrical control signal to high and low pressure control air valve, allowing the filter element alternately working under two pressures, making the working media returning to No. 2 pressure liquid storage can through the oil hydraulic control circuit. When the No. 1 pressure liquid storage can reach the lowest level, the No. 2 pneumatic logical circuit reversely presses the working media to the oil hydraulic control circuit till the preset testing number. The oil hydraulic system works in sealing status, with stable oil pressure, with simple structure and low cost.

The invention provides a linear feeding guide rail for a valve rod in an automatic ball valve assembling machine, and belongs to the technical field of automatic ball valve assembling machines. The problem of insufficient applicability is solved. The device comprises a body with a U-shaped cross section, the body comprises a base with an L-shaped cross section and a side plate connected with the horizontal part of the base and parallel to the vertical part of the base, the distance between the side plate and the vertical part of the base can be adjusted through translation, and the side, facing the vertical part of the base, of the side plate is provided with a protruding edge arranged in the length direction of the body. The upper side of the vertical part of the base is connected with an adjusting plate arranged in the length direction of the body, the upper side face of the adjusting plate and the upper side face of the protruding edge are planes and flush with each other, the side, facing the side plate, of the adjusting plate extends out of the side, facing the side plate, of the vertical part of the base all the time, and the distance between the adjusting plate and the side plate can be adjusted through translation. The device has the advantages of wide applicability, high working stability and the like.

A ball valve trim apparatus for high differential pressure service that is resistant to erosion includes elements selected from a plurality of stacked impedance trim plates positioned in the passage of the ball portion of the valve; the plates being independently adjustable along transverse axes that are parallel to the axis of rotation of the ball: one or more of the plates having a convex upstream contour, each plate provided with a predetermined pattern of variously sized fluid passageways, the pattern varying from plate-to-plate in the stack; erosion-resistant bushings inserted into the trim plate holes can be independently rotationally adjustable to control the rate of the flowing fluid, the upstream surface of the plate surrounding the orifice of the bushing defining a raised toroidal body.

The present invention discloses a deep-sea rapid loading and unloading device which comprises a main cabin body and at least one air cabin body, the two ends of the main cabin body are controlled to be opened and closed through a high-pressure ball valve, the main cabin body is communicated with the air cabin body through the high-pressure ball valve, and a temperature and pressure probe is arranged in the main cabin body. The invention further discloses a deep sea rapid loading and unloading method. The method comprises the steps that all the high-pressure ball valves are closed; the deep-sea rapid loading and unloading device is lowered to a preset deep-sea position; high-pressure ball valves at the two ends of the main cabin body are opened, and rapid pressurization of the main cabin body is achieved; and the high-pressure ball valves at the two ends of the main cabin body are closed, then the high-pressure ball valve between the main cabin body and the air cabin body is opened, and rapid pressure relief of the main cabin body is achieved. According to the invention, natural high pressure and constant temperature characteristics of deep sea are utilized, so that not only can in-situ thermodynamic parameters of deep sea water be directly measured, but also adiabatic rapid loading and unloading thermodynamic experiments of large-size samples can be carried out, and a very simple and effective rapid adiabatic loading and unloading scheme is provided for medium thermodynamic experiments.

The invention discloses a reverse vacuum insole setting machine and a using method thereof.The reverse vacuum insole setting machine comprises a vacuum box body, the bottom of the vacuum box body is connected with a vacuum pipe, the other end of the vacuum pipe is connected with a three-way ball valve fixedly installed on the side wall of the vacuum box body, the three-way ball valve is connected with vacuumizing equipment, and an upper cover is arranged on the upper side of the vacuum box body, a hollow cavity is formed in the middle of the upper cover and covered with a silica gel film. Compared with the prior art, the shoe pad manufacturing device has the advantages that the solid foot mold in the vacuum box body is visible in the vacuum container, an operator can clearly see the bony mark position of the solid foot mold, then accurate shoe pad manufacturing and accurate fine adjustment of the shoe pad can be achieved, the manufacturing efficiency is improved, and the manufacturing difficulty and the customization cost are reduced. The heat-setting insole material has multiple choices, and the function and the performance of the material are not limited. The machine is simple in structure, low in production cost and short in manufacturing period, customers select to customize in shops or not, and the machine can be popularized in multiple shops in a large area.

The invention discloses an underground liquid sampling tool. The underground liquid sampling tool comprises an upper joint, a sample pipe, a valve seat, a one-way ball valve, a connecting sleeve, a sealing pipe, a shearing pipe and a positioning head, wherein the upper joint is linked with the sample pipe; the sample pipe is linked with the valve seat provided with a runner; the one-way ball valveis arranged on the upper end surface of the valve seat and is communicated with the runner; the connecting sleeve is connected with the valve seat; the sealing pipe is arranged in the connecting sleeve, is connected with the valve seat and is communicated with the runner; the shearing pipe is arranged in the connecting sleeve and sleeves on the sealing pipe, is provided with step-shaped inner holes with large and small inner diameters and is matched with the sealing pipe; a first channel is formed in the sealing pipe; a sealing surface is formed between the sealing pipe and the inner holes with the small inner diameters of the shearing pipe; a second channel is formed in the pipe wall on the inner hole with the large inner diameter; and the shearing pipe is positioned on the connecting sleeve through a shearing pin and is connected with the positioning head. The underground liquid sampling tool can accurately arrive at a preset position so as to acquire a pressure-maintaining and retained ample from underground liquid. The underground liquid sampling tool is simple, effective, accurate and reliable.