Displacement detection control device for electric high-pressure multi-stage throttle valve

Abstract

The utility model discloses an electric high-pressure multistage throttle valve displacement detection control device which comprises a control cabinet, a programmable logic controller is installed in the control cabinet, an electric actuator is arranged on an electric throttle valve, and a straight stroke connecting shaft which slides up and down and is used for controlling the opening degree of the throttle valve is vertically arranged on the throttle valve. A displacement follow-up block is horizontally and transversely arranged on the straight stroke connecting shaft, a displacement magnetic ring and a measuring rod are arranged at the outer end of the displacement follow-up block, the displacement magnetic ring is arranged on the measuring rod in a sleeving mode, the measuring rod is vertically installed at the outer end of the displacement follow-up block, and a magnetostrictive displacement sensor is arranged on the throttling valve and is in signal communication with an electric actuator. And the electric actuator is in signal communication with the programmable logic controller. The displacement detection control device for the electric high-pressure multistage throttle valve can detect and control the electric throttle valve to be opened and closed in place, ensures normal and effective work of the electric throttle valve, and is high in automation degree and convenient to operate.

Description

Technical Field

[0001] The utility model relates to an electric high-pressure multi-stage throttle valve displacement detection control device, 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 electric throttle valve control device was operated by the control cabinet switch or on-site switch operation. The electric actuator drove the throttle valve to complete multi-stage switching actions in proportion. However, when the actuator completed each switching action, the actual displacement of the valve was accurate. There was no electronic detection signal, and it was impossible to accurately grasp it by appearance observation alone. In addition, in some cases, the control cabinet command opening and the actual throttle valve opening were inconsistent, and there was no way to perform secondary command repair execution. The shortcomings were obvious, and the electric throttle valve for high-pressure fluids with strict control requirements could not meet them. Utility Model Content

[0004] The utility model aims to provide an electric high-pressure multi-stage throttle valve displacement detection control device, which can detect and control the electric throttle valve switch in place, ensure the normal and effective operation of the electric throttle 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 an electric high-pressure multi-stage throttle valve displacement detection control device for detecting and controlling the switch displacement of the electric throttle valve, including a control cabinet, a control panel is provided on the control cabinet, a human-machine operation interface is provided on the control panel, a programmable logic controller is installed in the control cabinet, an electric actuator is provided on the throttle valve, a straight-stroke coupling for sliding up and down and controlling the throttle valve opening is vertically provided on the throttle valve, a displacement follower block is horizontally provided on the straight-stroke coupling, a displacement magnetic ring and a measuring rod are provided on the outer end of the displacement follower block, the displacement magnetic ring is sleeved on the measuring rod, and the measuring rod is vertically installed on the outer end of the displacement follower block, a magnetostrictive displacement sensor is provided on the throttle valve, the magnetostrictive displacement sensor is in signal communication with the electric actuator, and the electric actuator is in signal communication with the programmable logic controller.

[0006] Preferably, an outer cover is provided at the upper end of the linear coupling, a fixed bracket is provided on the outer cover, the magnetostrictive displacement sensor is mounted on the fixed bracket, and the upper end of the measuring rod points to the magnetostrictive displacement sensor.

[0007] Preferably, a guide sleeve is vertically provided on the fixed bracket, and the upper end of the measuring rod extends into the guide sleeve.

[0008] Preferably, the up and down sliding stroke of the linear coupling is 50 mm, and the highest position of the upper end of the measuring rod moving upward is 20 mm away from the magnetostrictive displacement sensor.

[0009] Preferably, the electric actuator is provided with an electric actuator power interface and an electric actuator signal interface, the magnetostrictive displacement sensor is provided with a magnetostrictive displacement sensor signal interface, and the magnetostrictive displacement sensor signal interface is connected to the electric actuator signal interface through a wire.

[0010] Preferably, a safety circuit breaker and a power supply are installed inside the control cabinet, and an external power cable, a power cable, and a control cable are installed at the bottom of the control cabinet.

[0011] The beneficial effects of the utility model are as follows: the electric high-pressure multi-stage throttle valve displacement detection control device of the utility model can detect the switch opening of the electric throttle valve and whether the switch is in place by setting a measuring rod, a displacement magnetic ring and a magnetostrictive displacement sensor, and a programmable logic controller, and control the electric throttle valve to switch in place, thereby ensuring the normal and effective operation of the electric throttle valve, having a high degree of automation and convenient operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] 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:

[0013] Figure 1 It is a structural schematic diagram of a control cabinet in the utility model electric high-pressure multi-stage throttle valve displacement detection control device;

[0014] Figure 2 It is a schematic diagram of the internal structure of the control cabinet in the electric high-pressure multi-stage throttle valve displacement detection control device of the utility model;

[0015] Figure 3 It is a structural schematic diagram of an embodiment of the electric high-pressure multi-stage throttle valve displacement detection control device of the utility model;

[0016] Figure 4 This is a partial schematic diagram of the electric high-pressure multi-stage throttle valve displacement detection control device in the embodiment of the utility model.

[0017] Figure 5It is a flow chart of the working principle of the electric high-pressure multi-stage throttle valve displacement detection control device in the embodiment of the utility model. DETAILED DESCRIPTION

[0018] 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.

[0019] Embodiments of the utility model:

[0020] The utility model provides an electric high-pressure multi-stage throttle valve displacement detection control device, please refer to Figures 1 to 5 , including a control cabinet 2, on which a control panel 201 is provided, on which a human-machine operation interface 202 is provided, a programmable logic controller 203 is installed in the control cabinet 2, and the electric throttle valve 1 includes a throttle valve 101, on which an electric actuator 102 is provided, on which a linear stroke coupling 103 for controlling the throttle valve opening is vertically provided, which slides up and down, and is used to control the throttle valve opening, and a displacement follower block 104 is horizontally arranged on the linear stroke coupling 103, and a displacement magnetic ring 105 and a measuring rod 106 are provided at the outer end of the displacement follower block 104, the displacement magnetic ring 105 is sleeved on the measuring rod 106, and the measuring rod 106 is vertically installed at the outer end of the displacement follower block 104, and a magnetostrictive displacement sensor 107 is provided on the throttle valve 101, and the magnetostrictive displacement sensor 107 is in signal communication with the electric actuator 102, and the electric actuator 102 is in signal communication with the programmable logic controller 203.

[0021] Preferably, an outer cover 108 is provided at the upper end of the linear coupling 103, a fixing bracket 109 is provided on the outer cover 108, the magneto displacement sensor 107 is mounted on the fixing bracket 109, and the upper end of the measuring rod 106 points to the magneto displacement sensor 107. The magneto displacement sensor 107 senses the position of the linear coupling 103 by sensing the position of the displacement magnetic ring 105, and the position of the linear coupling 103 corresponds to the opening of the electric throttle valve.

[0022] Preferably, a guide sleeve 110 is vertically provided on the fixing bracket 109 , and the upper end of the measuring rod 106 extends into the guide sleeve 110 .

[0023] Preferably, the up and down sliding stroke of the linear travel connecting shaft 103 is 50 mm, and the highest position of the upper end of the measuring rod 106 moving upward is 20 mm away from the magnetostrictive displacement sensor 107.

[0024] Preferably, the electric actuator 102 is provided with an electric actuator power interface 111 and an electric actuator signal interface 112, and the magnetostrictive displacement sensor 107 is provided with a magnetostrictive displacement sensor signal interface 113, and the magnetostrictive displacement sensor signal interface 113 is connected to the electric actuator signal interface 112 through a wire.

[0025] Preferably, a safety circuit breaker 204 and a power supply 205 are installed inside the control cabinet 2 , and an external power cable 206 , a power cable 207 , and a control cable 208 are installed at the lower part of the control cabinet 2 .

[0026] When the electric high-voltage multi-stage throttle valve displacement detection control device of the utility model is used, firstly, an external power supply is connected to power on the whole control system, and the control cabinet 2 controls the electric throttle valve to be opened or closed by setting 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 100% according to the node, and the human-machine operation interface 202 of the control panel 201 displays the valve position signal, the opening indication, the closing indication, and the fault indication accordingly, and the human-machine operation interface 202 displays the 0-100% position feedback value of the magnetostrictive displacement sensor 107 in real time; further, the programmable logic controller 203 inside the control cabinet 2 can perform logical operations according to the set value and the feedback value of the magnetostrictive displacement sensor 107, such as setting the opening of the electric throttle valve 1 to 50% for execution, but the magnetostrictive displacement sensor 107 detects that the actual opening of the valve is 48%, at this time, the programmable logic controller 203 calculates and quickly gives an instruction to add 2% of the opening to the electric throttle valve 1 until the opening feedback value is consistent with the set value. For example, if the electric throttle valve 1 is set to open at 50%, but the magnetostrictive displacement sensor 1-7 detects that the actual opening of the valve is 52%, then the programmable logic controller 203 will quickly give a command to reduce the opening by 2% to the electric actuator 102 of the electric throttle valve 1 after calculation, so that the linear coupling 103 slides up and down a certain distance until the opening feedback value of the electric throttle valve 1 is consistent with the set value. If the electric throttle valve is set to close, the execution principle is the same. The magnetostrictive displacement sensor 107, the linear coupling 103, the displacement follower block 104, the displacement magnetic ring 105 and the measuring rod 106 constitute a stable follow-up sliding detection mechanism, and then cooperate with the control cabinet 2 to issue a command to the electric throttle valve to open or close. The magnetostrictive displacement sensor 107 transmits the data back to the control cabinet 2, and the programmable logic controller 203 inside the control cabinet 2 calculates and issues a command signal whether to repair the opening, thus completing the software and hardware integrated closed-loop control. This avoids the defect that the electric throttle valve has an error in its controlled opening and its actual opening. The electric high-pressure multi-stage throttle valve is detected and controlled to be switched in place through the above process.

[0027] 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. An electric high-pressure multi-stage throttle valve displacement detection and control device, used for detecting and controlling the switch displacement of the electric throttle valve, comprising a control cabinet, a control panel is provided on the control cabinet, a human-machine operation interface is provided on the control panel, a programmable logic controller is installed in the control cabinet, characterized in that: The throttle valve is provided with an electric actuator, the throttle valve is vertically provided with a linear coupling shaft that slides up and down and is used to control the opening of the throttle valve, the linear coupling shaft is horizontally provided with a displacement follower block, the outer end of the displacement follower block is provided with a displacement magnetic ring and a measuring rod, the displacement magnetic ring is sleeved on the measuring rod, and the measuring rod is vertically installed on the outer end of the displacement follower block, the throttle valve is provided with a magnetostrictive displacement sensor, the magnetostrictive displacement sensor is in signal communication with the electric actuator, and the electric actuator is in signal communication with a programmable logic controller.

2. The electric high-pressure multi-stage throttle valve displacement detection control device according to claim 1, characterized in that: An outer cover is arranged at the upper end of the linear travel coupling shaft, a fixed bracket is arranged on the outer cover, the magnetostrictive displacement sensor is mounted on the fixed bracket, and the upper end of the measuring rod points to the magnetostrictive displacement sensor.

3. The electric high-pressure multi-stage throttle valve displacement detection control device according to claim 2, characterized in that: A guide sleeve is vertically arranged on the fixed bracket, and the upper end of the measuring rod extends into the guide sleeve.

4. The electric high-pressure multi-stage throttle valve displacement detection control device according to claim 3, characterized in that: The up and down sliding stroke of the linear travel coupling is 50 mm, and the highest position of the upper end of the measuring rod moving upward is 20 mm away from the magnetostrictive displacement sensor.

5. The electric high-pressure multi-stage throttle valve displacement detection control device according to claim 4, characterized in that: The electric actuator is provided with an electric actuator power interface and an electric actuator signal interface, and the magnetostrictive displacement sensor is provided with a magnetostrictive displacement sensor signal interface. The magnetostrictive displacement sensor signal interface is connected with the electric actuator signal interface through a wire.

6. The electric high-pressure multi-stage throttle valve displacement detection control device according to claim 5, characterized in that: A safety circuit breaker and a power supply are installed inside the control cabinet, and an external power cable, a power cable, and a control cable are installed at the bottom of the control cabinet.

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