Gas well valve with function of preventing sudden pressure change

Abstract

The utility model discloses a gas well valve with a function of preventing pressure from changing suddenly, which relates to the field of gas well valves, and adopts the technical scheme that the gas well valve comprises a valve body, a valve cavity is arranged in the valve body, a valve rod is arranged in the valve cavity, the bottom of the valve rod is connected with a valve core, and a motor for driving the valve rod to rotate is mounted at the top of the valve body. A pressure sensor is installed on the valve element, a control device which is matched with the pressure sensor and controls operation of the motor is installed on the surface of the motor, so that the angle of the valve element is adjusted according to the pressure condition, and the effect is that through mutual matching of the control device and the pressure sensor, the angle of the valve element in the valve cavity can be proper; and therefore, the gas flow can be effectively adjusted so as to cope with the situation of sudden pressure change in the gas well.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of gas well valve, more specifically, it relates to a gas well valve with pressure mutation prevention function. BACKGROUND

[0002] The gas well valve is a key equipment for controlling the gas flow in the gas well during the natural gas exploitation process. It is usually installed on the wellhead or the relevant pipeline in the wellbore, and its structure generally includes valve body, valve cavity, valve stem, valve core and other main components. The valve body provides support and accommodation space for the entire valve, the valve cavity is the passage for gas flow, the valve stem is connected with the valve core, and the valve core can be moved in the valve cavity by driving the valve stem, thereby realizing the control and on-off regulation of gas flow. The driving mode of the gas well valve is various, and the common ones are manual driving, such as operation by hand wheel or handle; electric driving, precise control according to instructions by means of electric actuator; pneumatic driving, using compressed air as power source; and hydraulic driving, relying on high-pressure liquid provided by hydraulic pump.

[0003] The current common gas well valve has many deficiencies when facing the pressure mutation in the gas well. For example, when the pressure in the gas well suddenly rises or drops due to formation activity, production operation adjustment or other reasons, the traditional gas well valve often cannot respond in time to adjust the gas flow, which may cause the pipeline system to bear excessive pressure impact, leading to safety accidents such as pipeline rupture and leakage; or when the pressure drops suddenly, it may cause abnormal backflow of fluid in the gas well, affecting the normal production order of the gas well, and also causing damage to subsequent gas treatment and transportation equipment.

[0004] Therefore, in order to solve the above technical problems, the present application provides a gas well valve with pressure mutation prevention function. CONTENT OF THE UTILITY MODEL

[0005] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a gas well valve with pressure mutation prevention function.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a gas well valve with pressure mutation prevention function, comprising a valve body, a valve cavity is arranged inside the valve body, a valve stem is arranged in the valve cavity, the bottom of the valve stem is connected with a valve core, a motor for driving the valve stem to rotate is installed on the top of the valve body, a pressure sensor is installed on the valve core, a control device cooperating with the pressure sensor and controlling the operation of the motor is installed on the surface of the motor, so as to adjust the angle of the valve core according to the pressure condition.

[0007] Preferably, an auxiliary positioning assembly is installed between the valve body and the motor, so that the installer does not need to hold it by hand.

[0008] Preferably, the auxiliary positioning assembly comprises limiting groove seats fixed on both sides of the flange plate on the valve body, the bottom end of the motor is fixed with the plug-in block through vertical rods on both sides, recesses are formed in the side ends of the plug-in block, through grooves are formed in the side ends of the limiting groove seats and are flush with the recesses when the plug-in block is inserted into the limiting groove seats, spring components are mounted on both sides of the limiting groove seats and drive the protrusions to sequentially pass through the through grooves and be inserted into the recesses.

[0009] Preferably, the spring components comprise connecting shells fixed on both sides of the limiting groove seats, guide rails for the sliding blocks to slide are fixedly connected on both sides of the interiors of the connecting shells, a connecting plate is fixedly connected between the sliding blocks, springs are mounted between the inner surfaces of the connecting shells and the back surfaces of the connecting plate, the surface of the connecting plate is fixed with the moving plate through a horizontal rod, and the protrusions are fixed on the back surface of the moving plate.

[0010] Preferably, the surface of the moving plate is fixedly connected with a handle facilitating pulling of the moving plate, so as to facilitate the movement of the installer.

[0011] Preferably, the control device comprises:

[0012] a power supply for supplying power to other power components of the control device;

[0013] a controller for sending a signal to the actuator to control the motor to drive the valve rod to rotate according to the signal input by the pressure sensor;

[0014] an actuator for driving the motor to operate according to the signal of the microprocessor.

[0015] Preferably, a buzzer is mounted on the top of the motor and is connected with the controller on the control device through a signal line.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. The controller and the pressure sensor cooperate with each other, so that the angle of the valve core in the valve cavity is just right, thereby effectively adjusting the gas flow to cope with the pressure mutation in the gas well, and solving the problem that the gas flow cannot be adjusted in time in the background technology;

[0018] 2. After the controller receives the action completion feedback signal of the actuator, it will again confirm that the current state is in the pressure mutation state, and then based on this, the buzzer is formally driven to sound an alarm through the connected signal line, so as to remind the relevant staff of the current situation;

[0019] 3. The utility model discloses a auxiliary positioning assembly is installed between valve body and motor, when the installation of flange plate bolt, need not staff hand to support, it is more convenient to operate, and auxiliary positioning assembly can also assist traditional fixed structure to carry out two -fold fixed, make motor and valve body connection more reliable. BRIEF DESCRIPTION OF DRAWINGS

[0020] The drawings described herein are used to provide further understanding of the utility model and constitute a part of the application. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute improper limitation on the utility model. In the drawings:

[0021] Figure 1 It is the whole structure schematic diagram of the utility model;

[0022] Figure 2 It is the A partial structure enlarged view of the utility model; Figure 1

[0023] Figure 3 It is the specific structure schematic diagram of the utility model limit groove seat and plug -in block connection remove protruding block

[0024] Figure 4 It is the specific structure schematic diagram in the connecting shell inside of the utility model;

[0025] Figure 5 It is the internal structure schematic diagram of the valve body in the utility model.

[0026] In the drawing: 1, valve body;2, valve cavity;3, valve stem;4, valve core;5, motor;6, pressure sensor;7, control device;

[0027] 8, auxiliary positioning assembly;801, limit groove seat;802, plug -in block;803, recess;804, through slot;805, protruding block;806, elastic part;8061, connecting shell;8062, guide rail;8063, sliding block;8064, connecting plate;8065, spring;8066, cross bar;8067, moving plate;807, vertical rod;

[0028] 9, handle;10, buzzer. DETAILED DESCRIPTION

[0029] For example, Figures 1-5 ​The utility model provides a kind of gas well valve with prevent pressure mutation function, including valve body 1, valve body 1 inside is equipped with valve cavity 2, valve cavity 2 is equipped with valve stem 3, valve stem 3 bottom is connected with valve core 4, the top of valve body 1 is installed motor 5 of driving valve stem 3 rotation, pressure sensor 6 is installed on valve core 4, the surface of motor 5 is equipped with controller 7 with pressure sensor 6 cooperation and control motor 5 operation, to adjust the angle of valve core 4 according to pressure condition, controller 7 includes power supply, controller and actuator.

[0030] In the normal operation process of gas well valve, pressure sensor 6 installed on valve core 4 will continue to monitor the surrounding gas pressure.Pressure sensor 6 can acutely perceive the subtle change of gas pressure near the position of valve core 4, and transmit these pressure signals to the controller in controller device 7 in real time, when pressure mutation occurs in gas well, such as pressure rises or drops, pressure sensor 6 will quickly detect this abnormal pressure change, and immediately transmit the corresponding pressure signal to the controller, the controller receives the signal from pressure sensor 6, will analyze and process these signals based on its built-in preset program and algorithm, the controller determines that pressure mutation has occurred according to the pre-set pressure threshold range and the current received pressure signal value, then, the controller generates corresponding control instruction according to the established control logic, and sends the control instruction to the actuator, the actuator will drive motor 5 to start running according to the instruction requirement after receiving the control instruction from the controller. Motor 5 starts to rotate after receiving the driving signal of actuator, the rotation of motor 5 drives valve stem 3 to rotate through suitable transmission mechanism, with the rotation of valve stem 3, valve core 4 will also rotate accordingly, since the control instruction issued by the controller is based on the accurate judgment of pressure mutation and the preset coping strategy, so the angle of valve stem 3 driving valve core 4 to rotate is accurately calculated and set, which can make the angle of valve core 4 in valve cavity 2 just right, and then realize the effective regulation of gas flow to cope with the situation of pressure mutation in gas well.

[0031] And, the top of motor 5 is installed buzzer 10, which is connected with the controller of controller device 7 through signal line, when the controller determines that pressure mutation occurs, it will also send a trigger signal to buzzer 10 through the signal line connected with buzzer 10.

[0032] Specifically, when the actuator receives the control instruction issued by the controller, it will drive motor 5 to start running according to the instruction requirement.After the actuator completes the action of driving motor 5 to run, the actuator will send an action completion feedback signal to the controller.

[0033] When the controller receives the feedback signal of the completion of the actuator action, it will again confirm that it is currently in the state of pressure mutation (because it has been determined that the pressure mutation has occurred and the relevant control instructions have been issued), and then based on this, it will formally drive the buzzer 10 to issue a sound alarm to remind the relevant staff of the current situation.

[0034] For example, when the pressure suddenly rises, the controller analyzes the high pressure signal from the pressure sensor 6 and determines that the gas flow needs to be reduced to alleviate the high pressure impact that the pipeline system may bear, and then issues corresponding control instructions to the actuator. The actuator drives the motor 5 to rotate the valve stem 3, causing the valve core 4 to rotate to an angle that can reduce the flow area of the valve cavity 2, thereby reducing the gas flow. At the same time, the controller is ready to trigger the buzzer 10 to sound after determining that the pressure has suddenly risen. After the actuator drive motor 5 action is completed and feedback is received, the buzzer 10 is formally driven to issue a continuous or specific frequency alarm sound, reminding the operator that the gas well has a severe situation of pressure surge and needs to be addressed in a timely manner.

[0035] Similarly, when the pressure suddenly drops, the controller makes a judgment based on the low pressure signal from the pressure sensor 6 and issues instructions to the actuator to drive the motor 5 to rotate the valve stem 3, causing the valve core 4 to rotate to an angle that can appropriately increase the flow area of the valve cavity 2, preventing problems such as abnormal backflow of fluid in the gas well. And after determining that the pressure has suddenly dropped and the actuator has completed the motor 5 action and feedback, the controller will also drive the buzzer 10 to issue a corresponding alarm sound to inform the operator that the gas well has a pressure drop situation, so that appropriate measures can be taken.

[0036] The motor 5 and the controller 7 and transmission assembly thereon, when connected with the valve body 1 (generally through a flange and bolts), need to be aligned (flange alignment), and then the installer needs to hold the stable position while performing the fixing operation (through bolts), which is relatively troublesome.

[0037] To this end, the utility model discloses between valve body 1 and motor 5 installs auxiliary positioning assembly 8, and auxiliary positioning assembly 8 includes the flange plate both sides of the limiting groove seat 801 fixed on valve body 1, and the bottom both sides of motor 5 are fixed with the plug -in block 802 through vertical rod 807, and the side end of plug -in block 802 all is set up recess 803, and the side end of limiting groove seat 801 all is set up the through groove 804 when the plug -in block 802 inserts into limiting groove seat 801 with recess 803 flush, and the both sides of limiting groove seat 801 all are installed with the elastic component 806 that drive lug 805 passes through through groove 804 in proper order and inserts into recess 803, and elastic component 806 includes the connecting shell 8061 fixed on the both sides of limiting groove seat 801, and both sides in the inside of connecting shell 8061 are all fixedly connected with the guide rail 8062 for the sliding block 8063 sliding, and the sliding block 8063 are fixedly connected with the connecting plate 8064, and the inner surface of connecting shell 8061 and the back of connecting plate 8064 are installed with spring 8065, and the surface of connecting plate 8064 is fixed with moving plate 8067 through cross rod 8066, and lug 805 is fixed on the back of moving plate 8067, and the surface fixedly connected with handle 9 that is convenient for its pulling of moving plate 8067.

[0038] When installing, the moving plate 8067 is moved to the direction away from the limiting groove seat 801 through the handle 9, so that the lug 805 is pulled out (passes through the through groove 804) from the limiting groove seat 801, then the plug-in block 802 on the motor 5 is inserted into the plug-in groove seat on the valve body 1, in this process, the moving plate 8067 drives the movement of the connecting plate 8064 through the cross rod 8066, the connecting plate 8064 drives the movement of the sliding block 8063, the sliding block 8063 slides along the guide rail 8062 to maintain the execution movement of the connecting plate 8064, and the spring 8065 is lengthened, after insertion, the handle 9 is released, the spring 8065 starts to reverse elongation by its elastic force, so as to reset the moving plate 8067 and the lug 805, the lug 805 passes through the through groove 804 on the limiting groove seat 801 in turn and is inserted into the recess 803 on the plug-in block 802, so that the plug-in block 802 can be fixed in the limiting groove seat 801, and the motor 5 and the valve body 1 are limited, at this time, the flange plates on the two parts are tightly attached to each other, so that the installation of the bolt can be carried out, without the need for staff to hold, more convenient operation, and the auxiliary positioning assembly 8 can also assist the traditional fixing structure to carry out double fixing, so that the motor 5 and the valve body 1 are connected more firmly.

[0039] The above merely describes preferred embodiments of the present application, and is not intended to limit the present application in any form; any person skilled in the art can smoothly implement the present application according to the drawings shown in the specification and the above description; however, any person skilled in the art can make slight changes, modifications and equivalent changes of the present application within the scope of the technical scheme of the present application, and the equivalent embodiments of the present application are still within the protection scope of the technical scheme of the present application.

Claims

1. A gas well valve with a function of preventing sudden pressure changes, comprising a valve body (1), a valve cavity (2) provided inside the valve body (1), a valve stem (3) provided in the valve cavity (2), the bottom of the valve stem (3) being connected to a valve core (4), and a motor (5) for driving the valve stem (3) to rotate being installed on the top of the valve body (1), characterized in that: The valve core (4) is provided with a pressure sensor (6), and the surface of the motor (5) is provided with a control device (7) matched with the pressure sensor (6) and used for controlling the operation of the motor (5), so as to adjust the angle of the valve core (4) according to the pressure condition.

2. The gas well valve with the function of preventing pressure mutation according to claim 1, characterized in that: An auxiliary positioning assembly (8) is arranged between the valve body (1) and the motor (5).

3. The gas well valve with the function of preventing pressure mutation according to claim 2, characterized in that: The auxiliary positioning assembly (8) comprises limiting groove seats (801) fixed on both sides of a flange plate of the valve body (1), vertical rods (807) and plug blocks (802) fixed to both sides of the bottom end of the motor (5), recesses (803) formed in the side ends of the plug blocks (802), through grooves (804) formed in the side ends of the limiting groove seats (801) and flush with the recesses (803) when the plug blocks (802) are inserted into the limiting groove seats (801), and elastic components (806) installed on both sides of the limiting groove seats (801) and used for driving the protrusions (805) to sequentially pass through the through grooves (804) and be inserted into the recesses (803).

4. The gas well valve with the function of preventing pressure mutation according to claim 3, characterized in that: The elastic components (806) comprise connecting shells (8061) fixed on both sides of the limiting groove seats (801), and guide rails (8062) fixedly connected to both sides of the interiors of the connecting shells (8061) and used for sliding the sliding blocks (8063), a connecting plate (8064) fixedly connected between the sliding blocks (8063), springs (8065) installed between the inner surfaces of the connecting shells (8061) and the back surfaces of the connecting plate (8064), a horizontal rod (8066) and a moving plate (8067) fixed to the surface of the connecting plate (8064), and the protrusions (805) fixed to the back surface of the moving plate (8067).

5. The gas well valve with the function of preventing pressure mutation according to claim 4, characterized in that: The surface of the moving plate (8067) is fixedly connected with a handle (9) used for facilitating pulling.

6. The gas well valve having a function of preventing pressure surge according to claim 1, wherein: The control device (7) comprises: a power supply used for supplying power to other power-consuming components of the control device (7); a controller used for sending a signal for controlling the motor (5) to drive the valve rod (3) to rotate to an actuator according to a signal input by the pressure sensor (6); an actuator used for driving the motor (5) to operate according to the signal of the microprocessor.

7. The gas well valve with the function of preventing pressure jump according to claim 6, characterized in that: A buzzer (10) is arranged on the top of the motor (5) and connected with the controller of the control device (7) through a signal line.

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