Engine emergency stop device and emergency stop function test method

[0032] Depend on figure 1 As shown, in this embodiment, the engine emergency stop device includes a compressed air supply unit 1, an air supply pipeline 2 and a plurality of parking cylinders 3 arranged side by side, and the air supply pipeline 2 is connected to the air outlet of the compressed air supply unit 1, and a plurality of The parking cylinder 3 communicates with the converging pipe section 21 of the air supply pipeline 2 through a one-to-one corresponding branch pipeline 4, and an electric control valve is arranged on the air supply pipeline 2; There is a first pressure sensor 22 , and a second pressure sensor 23 is provided on the junction pipe section 21 ; the electric control valve, the first pressure sensor 22 and the second pressure sensor 23 are all electrically connected to the control unit 9 . A cut-off check valve 8 is arranged on the gas supply pipeline 2 upstream of the electric control valve.

[0033] The electric control valve in this embodiment is a two-p

[0035] The structure of this embodiment is basically the same as that of Embodiment 1, the difference lies in the electric control valve, and only the differences will be described below.

[0036] Depend on figure 2 As shown, the electric control valve in this embodiment is a two-position two-way solenoid valve 6, and the gas supply pipeline 2 downstream of the two-position two-way solenoid valve 6 communicates with the discharge pipeline 7, and the discharge pipeline 7 is provided with a discharge pipeline. Release valve 71; when the two-position two-way solenoid valve 6 is opened (the gas supply pipeline 2 is turned on), the relief valve 71 is closed (the discharge pipeline 7 is cut off), and when the two-position two-way solenoid valve 6 is closed (the gas supply pipeline 2 cut-off), the discharge valve 71 is opened (the discharge pipeline 7 is conducted); it should be noted that opening and closing refer to the opening and closing state of the valve.

[0037] Wherein, the t

[0039] Depend on image 3 As shown, this embodiment discloses a method for testing the emergency stop function, and the emergency stop function is tested based on the engine emergency stop device disclosed in Embodiment 1 or Embodiment 2; including:

[0040] S1. The operator triggers the start signal.

[0041] S2. Based on the pressure signal transmitted by the first pressure sensor 22, the control unit 9 judges whether the current supply air pressure is within the first set threshold; when it is determined that the current supply air pressure is within the first set threshold, execute step S3 ; When it is determined that the current supply air pressure is not within the first set threshold, execute step S6.

[0042] S3. The control unit 9 issues a selection command, and the display unit electrically connected to the control unit 9 prompts the operator to choose whether to perform an emergency stop function test; when the operator chooses to perform an emergency stop function test