Hydraulic high-pressure gate valve

Abstract

The utility model discloses a hydraulic high-pressure gate valve which comprises a hydraulic gate valve and a hydraulic control cabinet, a control box, a main power cable, a control cable and a hydraulic control disc are arranged in the hydraulic control cabinet, and a safety circuit breaker, a power supply, a man-machine operation interface and a programmable logic controller are arranged in the control box. A three-position four-way electromagnetic valve A coil and a three-position four-way electromagnetic valve B coil are arranged in the hydraulic control disc, a first fixing support and a second fixing support are arranged on the gate valve tail rod, the first fixing support is located above the second fixing support, a first inductance type proximity switch is installed on the first fixing support, and a second inductance type proximity switch is installed on the second fixing support. A second inductance type proximity switch is installed on the second fixing support, and a displacement follow-up block is arranged on the gate valve connecting shaft rod. The hydraulic high-pressure gate valve can detect and control the hydraulic high-pressure gate valve to be opened and closed in place, normal and effective work of the hydraulic high-pressure gate valve is guaranteed, the automation degree is high, and operation is convenient.

Description

Technical Field

[0001] The utility model relates to a hydraulic high-pressure gate valve, belonging to the technical field of oil and natural gas drilling equipment. Background Art

[0002] At present, with the continuous development of oil and gas exploration and exploitation, the oil and gas field sites have higher and higher requirements for the automation and intelligence of related drilling and production equipment. In addition, the use environment area must comply with the explosion-proof protection level, and the electrical control system supporting requirements must follow strictness, so the requirements for safety, reliability, automatic operation, and easy maintenance are particularly prominent.

[0003] In the past, the hydraulic high-pressure gate valve control device was operated by a remote hydraulic control cabinet. The hydraulic control cabinet outputted two-way hydraulic oil through the oil pipe to drive the hydraulic driver of the high-pressure gate valve to complete the opening or closing action. However, after each opening or closing action, there may be errors in the actual opening or closing position of the valve and the position accuracy. In the absence of external electronic detection equipment, it is impossible to accurately grasp it by appearance observation alone. If the switch is not in place, manual secondary switch command repair execution is required. The disadvantages are obvious, and there are several more labor processes. The gate valve for high-pressure oil and gas fluids with strict control requirements cannot meet the use conditions. Utility Model Content

[0004] The utility model aims to provide a hydraulic high-pressure gate valve, which can detect and control the hydraulic high-pressure gate valve to be switched in place, ensure the normal and effective operation of the hydraulic high-pressure gate valve, has a high degree of automation and is easy to operate.

[0005] In order to solve the above technical problems, a technical solution adopted by the utility model is: to provide a hydraulic high-pressure gate valve, which includes a hydraulic gate valve and a hydraulic control cabinet, wherein the hydraulic control cabinet is provided with a control box, a main power cable, a control cable and a hydraulic control panel, wherein the main power cable and the control cable are electrically connected with the control box and the hydraulic control panel, wherein the hydraulic gate valve includes a gate valve part and a gate valve tail rod, wherein a gate valve coupling rod sliding up and down is provided between the gate valve part and the gate valve tail rod, wherein the control box is provided with a safety circuit breaker, a power supply, a human-machine operation interface and a programmable logic controller, wherein the programmable logic controller is connected to the gate valve part and the gate valve tail rod. The human-machine operation interface is connected to the hydraulic control panel by signal. A three-position four-way solenoid valve A coil and a three-position four-way solenoid valve B coil are provided in the hydraulic control panel. A first fixed bracket and a second fixed bracket are provided on the tail rod of the gate valve. The first fixed bracket is located above the second fixed bracket. A first inductive proximity switch is installed on the first fixed bracket. A second inductive proximity switch is installed on the second fixed bracket. Both the first inductive proximity switch and the second inductive proximity switch are connected to the human-machine operation interface and the programmable logic controller by signal. A displacement follower block is provided on the gate valve coupling rod.

[0006] Preferably, a hydraulic driver is installed on the hydraulic gate valve, and a driver A cavity and a driver B cavity are provided on the hydraulic driver.

[0007] Preferably, the main power cable in the hydraulic control cabinet is connected to an external power supply, an on-site junction box is provided on the hydraulic gate valve, the control cable is electrically connected to the on-site junction box, the first inductive proximity switch and the second inductive proximity switch are both electrically connected to the on-site junction box, and an A oil pipe and a B oil pipe are provided in the hydraulic control cabinet, the A oil pipe is connected to the A cavity of the driver, and the B oil pipe is connected to the B cavity of the driver.

[0008] Preferably, the detection centers of the first inductive proximity switch and the second inductive proximity switch are respectively oriented toward the displacement follower block and are on the same vertical line as the center point of the displacement follower block.

[0009] Preferably, the detection sensing point when the hydraulic gate valve is fully closed is 10 mm before the maximum closed position of the hydraulic gate valve, and the detection sensing point when the hydraulic gate valve is fully opened is 10 mm before the maximum open position of the hydraulic gate valve.

[0010] The beneficial effects of the utility model are as follows: the hydraulic high-pressure gate valve of the utility model can detect whether the hydraulic high-pressure gate valve is fully opened and closed by setting an inductive proximity switch and a programmable logic controller, control the hydraulic high-pressure gate valve to be fully opened and closed, ensure the normal and effective operation of the hydraulic high-pressure gate valve, have a high degree of automation, and are easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative work, among which:

[0012] Figure 1 It is a structural schematic diagram of the hydraulic control cabinet in the hydraulic high-pressure gate valve of the utility model;

[0013] Figure 2 It is a structural schematic diagram of the control box in the hydraulic high-pressure gate valve of the utility model;

[0014] Figure 3 It is a schematic diagram of the hydraulic high-pressure gate valve of the utility model in an embodiment;

[0015] Figure 4 It is a flow chart of the working principle of the hydraulic high-pressure gate valve of the utility model in an embodiment. DETAILED DESCRIPTION

[0016] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] Embodiments of the utility model:

[0018] The utility model provides a hydraulic high pressure gate valve, please refer to Figures 1 to 4 , including a hydraulic gate valve 1 and a hydraulic control cabinet 2, wherein the hydraulic control cabinet 2 is provided with a control box 201, a main power cable 202, a control cable 203 and a hydraulic control panel 204, wherein the main power cable 202 and the control cable 203 are electrically connected with the control box 201 and the hydraulic control panel 204, wherein the hydraulic gate valve 1 includes a gate valve portion 205 and a gate valve tail rod 206, wherein a gate valve coupling rod 207 sliding up and down is provided between the gate valve portion 205 and the gate valve tail rod 206, wherein the control box 201 is provided with a safety circuit breaker 208, a power supply 209, a human-machine operation interface 210 and a programmable logic controller 211, wherein the human-machine operation interface 210 is generally an operation computer, wherein the programmable logic controller 211 and the human-machine operation interface 210 are connected to each other. The hydraulic control disk 204 is connected to the signal. The hydraulic control disk 204 is provided with a three-position four-way solenoid valve A coil 212 and a three-position four-way solenoid valve B coil 213. The gate valve tail rod 206 is provided with a first fixed bracket 214 and a second fixed bracket 215. The first fixed bracket 214 is located above the second fixed bracket 215. The first fixed bracket 214 is installed with a first inductive proximity switch 216. The second fixed bracket 215 is installed with a second inductive proximity switch 217. The first inductive proximity switch 216 and the second inductive proximity switch 217 are both connected to the human-machine operation interface 210 and the programmable logic controller 211 by signal. The gate valve connecting rod 207 is provided with a displacement follower block 218.

[0019] Preferably, a hydraulic driver 101 is installed on the hydraulic gate valve 1 , and a driver A cavity 102 and a driver B cavity 103 are provided on the hydraulic driver 101 .

[0020] Preferably, the main power cable 202 in the hydraulic control cabinet 2 is connected to an external power supply, an on-site wiring box 219 is provided on the hydraulic gate valve 1, the control cable 203 is electrically connected to the on-site wiring box 219, the first inductive proximity switch 216 and the second inductive proximity switch 217 are both electrically connected to the on-site wiring box 219, and an A oil pipe 220 and a B oil pipe 221 are provided in the hydraulic control cabinet 2, the A oil pipe 220 is connected to the driver A cavity 102, and the B oil pipe 221 is connected to the driver B cavity 103.

[0021] Preferably, the detection centers of the first inductive proximity switch 216 and the second inductive proximity switch 217 are respectively oriented toward the displacement follower block 218 and are on the same vertical line with the center point of the displacement follower block 218 .

[0022] Preferably, the detection sensing point when the hydraulic gate valve 1 is fully closed is 10 mm before the maximum closed position of the hydraulic gate valve 1, and the detection sensing point when the hydraulic gate valve 1 is fully opened is 10 mm before the maximum open position of the hydraulic gate valve 1. The displacement follower block 218 moves to the fully opened or fully closed detection point, with a detection control accuracy of less than 1 mm, and feeds back the detected signal to the programmable logic controller 211 in the control box 201 for logic operation, thereby forming a stable and safe follow-up sliding detection device.

[0023] When the hydraulic high-pressure gate valve of the utility model is in use, the electric pump 223 applies pressure and stabilizes the pressure, and the working condition is automatically controlled. For example, the human-machine operation interface 210 of the control box 201 gives a hydraulic gate valve opening execution command, and the three-position four-way solenoid valve A coil 212 of the hydraulic control panel 204 is energized, and 2000psi hydraulic oil is delivered to the driver A chamber 102 through the A oil pipe 220. At this time, the driver B chamber 103 returns oil to the oil tank 222 through the B oil pipe 221. The hydraulic gate valve 1 opens, and the displacement follower block 218 slides along with the gate valve connecting rod 207, opening the valve to the fully opened stop position. The first inductive proximity switch 216 senses the displacement follower block 218, and immediately transmits the valve opening completion signal back to the programmable logic controller 211 inside the control box 201. After the program is run, the three-position four-way solenoid valve A coil 212 is immediately de-energized, the A oil pipe 220 is stopped from supplying oil and locked in a stable voltage state, so that the hydraulic gate valve 1 is kept in a precise fully opened state position, and the fully opened indicator light of the human-machine operation interface 210 is lit. Furthermore, if the human-machine operation interface 210 of the control box 201 gives a hydraulic gate valve closing execution command, the three-position four-way solenoid valve B coil 213 of the hydraulic control panel 204 is energized, and 2000psi hydraulic oil is delivered to the driver B chamber 103 through the B oil pipe 221. At this time, the driver A chamber 102 returns oil to the oil tank 222 through the A oil pipe 220. The hydraulic gate valve 1 closes, and the displacement follower block 218 slides with the gate valve connecting rod 207, closing the valve to the stop position of the closed position. The second inductive proximity switch 217 senses the displacement follower block 218, and immediately transmits the valve closing completion signal back to the programmable logic controller 211 inside the control box 201. After the program is run, the B coil 213 of the three-position four-way solenoid valve is immediately de-energized, and the oil supply of the B oil pipe 221 is stopped and locked in a stable voltage state, so that the hydraulic gate valve 1 is kept in a precise closed position, and the closed position indicator light of the human-machine operation interface 210 is lit. If the action signal is delayed during the execution of the two action processes, or the action is not completed within 15 seconds after the execution command is issued, the fault indicator light of the human-machine operation interface 210 will light up, and the corresponding fault alarm information will be displayed, and the programmable logic controller 211 will stop all action commands. The above process is used to detect and control the opening and closing of the hydraulic gate valve.

[0024] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A hydraulic high-pressure gate valve, comprising a hydraulic gate valve and a hydraulic control cabinet, wherein the hydraulic control cabinet is provided with a control box, a main power cable, a control cable and a hydraulic control panel, wherein the main power cable and the control cable are electrically connected with the control box and the hydraulic control panel, wherein the hydraulic gate valve comprises a gate valve portion and a gate valve tail rod, wherein a gate valve coupling rod sliding up and down is provided between the gate valve portion and the gate valve tail rod, wherein: The control box is provided with a safety circuit breaker, a power supply, a human-machine interface and a programmable logic controller. The programmable logic controller is in signal communication with the human-machine interface and the hydraulic control panel. The hydraulic control panel is provided with a three-position four-way solenoid valve A coil and a three-position four-way solenoid valve B coil. The gate valve tail rod is provided with a first fixed bracket and a second fixed bracket. The first fixed bracket is located above the second fixed bracket. The first fixed bracket is installed with a first inductive proximity switch, and the second fixed bracket is installed with a second inductive proximity switch. Both the first inductive proximity switch and the second inductive proximity switch are in signal communication with the human-machine interface and the programmable logic controller. A displacement follower block is provided on the gate valve coupling rod.

2. The hydraulic high-pressure gate valve according to claim 1, characterized in that: A hydraulic driver is installed on the hydraulic gate valve, and a driver A cavity and a driver B cavity are provided on the hydraulic driver.

3. The hydraulic high-pressure gate valve according to claim 2, characterized in that: The main power cable in the hydraulic control cabinet is connected to the external power supply. The hydraulic gate valve is provided with an on-site junction box, the control cable is electrically connected to the on-site junction box, the first inductive proximity switch and the second inductive proximity switch are both electrically connected to the on-site junction box, and the hydraulic control cabinet is provided with an A oil pipe and a B oil pipe, the A oil pipe is connected to the A cavity of the driver, and the B oil pipe is connected to the B cavity of the driver.

4. The hydraulic high-pressure gate valve according to claim 3, characterized in that: The detection centers of the first inductive proximity switch and the second inductive proximity switch are respectively oriented toward the displacement follower block and are located on the same vertical line as the center point of the displacement follower block.

5. The hydraulic high-pressure gate valve according to claim 4, characterized in that: The detection sensing point when the hydraulic gate valve is fully closed is 10 mm before the maximum closed position of the hydraulic gate valve, and the detection sensing point when the hydraulic gate valve is fully opened is 10 mm before the maximum open position of the hydraulic gate valve.

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