Electric control hydraulic grease injection system

Abstract

The utility model discloses an electric control hydraulic grease injection system which comprises pressure sensors arranged in a sealing head and a blowout preventer and a grease injection system for injecting sealing grease to the portions, needing grease injection, in the sealing head and the blowout preventer. The hydraulic system is used for supplementing hydraulic oil into the sealing head and the hydraulic cylinder of the blowout preventer; the electromagnetic valves are used for achieving on-off of sealing grease and hydraulic oil conveying; the control module is electrically connected with the pressure sensor, the grease injection system, the hydraulic system and the electromagnetic valve; the operation module is electrically connected with the control module. According to the application, the grease injection system is used for realizing the supplement of the sealing grease at the part needing the sealing grease in the sealing head or the blowout preventer, the hydraulic system is used for realizing the supplement of hydraulic oil in the sealing head or the blowout preventer, and the grease injection system and the hydraulic system are electrically connected with the control module respectively, so that the automatic control of the system is realized; and the problem of low working efficiency caused by manual operation in the prior art is avoided.

Description

Technical Field

[0001] The present application relates to an electronically controlled hydraulic grease injection system, and belongs to the technical field of hydraulic grease injection systems for blowout prevention devices of well control equipment for oilfield operations. Background Art

[0002] In the cable and steel wire operation in oil and gas fields, the cable and steel wire blowout prevention device is the most important and necessary safety equipment for production operations, among which the hydraulic control grease injection system is the key core control component in the complete set of blowout prevention equipment. In the prior art, the control of the hydraulic control grease injection system is achieved by centrally installing the operating valve on the control panel. The operator needs to stand in front of the operating panel and manually turn the control valve to operate the various components of the blowout prevention device. The defect of this solution is that it is difficult to operate quickly, which is not conducive to improving work efficiency. Utility Model Content

[0003] The present application provides an electronically controlled hydraulic grease injection system to solve the problem in the prior art that operators are required to manually turn the control valve to operate the various components of the blowout prevention device, which makes it difficult to operate quickly and affects work efficiency. The specific solution is:

[0004] An electronically controlled hydraulic grease injection system, comprising:

[0005] Pressure sensors are respectively arranged in the sealing head and the blowout preventer, and are used to collect pressure values ​​in the sealing head and the blowout preventer;

[0006] Grease injection system, used to inject sealing grease into the sealing head and the parts of the blowout preventer that need grease injection;

[0007] Hydraulic system, used to replenish hydraulic oil into the hydraulic cylinders of the sealing head and the blowout preventer;

[0008] A plurality of solenoid valves, which are respectively arranged at the output ends of the grease injection system and the hydraulic system, respectively controlling the on-off of the sealing grease and hydraulic oil delivery and the regulation of the delivery flow;

[0009] A control module, electrically connected to the pressure sensor, the grease injection system, the hydraulic system and the plurality of solenoid valves;

[0010] The operating module includes a control button and a touch control screen, and the control button and the touch control screen are electrically connected to the control module respectively.

[0011] Preferably, the control module includes a PLC controller and a digital-to-analog conversion module;

[0012] The PLC controller is electrically connected to the digital-to-analog conversion module, the pressure sensor, the control button and the touch control screen respectively;

[0013] The digital-to-analog conversion modules are respectively connected to a plurality of the solenoid valves.

[0014] Preferably, the grease injection system comprises a grease injection pump and a sealing grease container;

[0015] One end of the grease injection pump is connected to the sealing grease container, and the other end of the grease injection pump is connected to the sealing head and the part in the blowout preventer that needs grease injection, and the output end of the grease injection pump is provided with a grease injection solenoid valve;

[0016] The grease injection solenoid valve is electrically connected to the digital-to-analog conversion module.

[0017] Preferably, the grease injection system further comprises a frequency converter;

[0018] The frequency converter is electrically connected to the driving motor and the digital-to-analog conversion module of the grease injection pump respectively.

[0019] Preferably, the hydraulic system comprises a hydraulic source and a hydraulic pump;

[0020] The input end of the hydraulic pump is connected to the hydraulic source, the output end of the hydraulic pump is connected to the sealing head and the hydraulic cylinder of the blowout preventer, and the driving motor of the hydraulic pump is electrically connected to the PLC controller;

[0021] The output end of the hydraulic source is provided with a hydraulic solenoid valve;

[0022] The hydraulic solenoid valve is electrically connected to the digital-to-analog conversion module.

[0023] Preferably, the input end of the hydraulic pump is also provided with a hydraulic accumulator for storing spare hydraulic oil;

[0024] The output end of the hydraulic accumulator is connected to the input pipeline of the hydraulic pump, and the hydraulic accumulator is provided with an energy storage solenoid valve;

[0025] The energy storage solenoid valve is electrically connected to the digital-to-analog conversion module.

[0026] Preferably, the hydraulic solenoid valve is also provided with an operating handle;

[0027] The operating handle is connected to the hydraulic solenoid valve.

[0028] The beneficial effects of this application include:

[0029] In the present application, the sealing grease in the sealing head or the part where the sealing grease is needed in the blowout preventer is supplemented by the grease injection system, and the hydraulic oil in the hydraulic cylinder in the sealing head or the blowout preventer is supplemented by the hydraulic system. The grease injection system and the hydraulic system are electrically connected to the control module respectively to realize the automatic control of the system, thereby avoiding the problem of low work efficiency caused by manual operation in the prior art.

[0030] The operating module in the present application includes a control button that can be operated at a short distance, and a touch control screen that can be operated at a long distance. The control button and the touch control screen are electrically connected to the control module respectively, so as to realize operation control at a short or long distance, and realize control flexibility while satisfying remote control operation.

[0031] The present application provides an operating handle on the hydraulic solenoid valve, thereby achieving both remote and close manual operation of the hydraulic solenoid valve, and can also cope with abnormal conditions such as electronic control failure or power outage. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 This is a schematic diagram of the principle of an electronically controlled hydraulic grease injection system for this application;

[0033] Figure 2 This is a left isometric diagram of an electronically controlled hydraulic grease injection system of the present application;

[0034] Figure 3 This is a right-side isometric schematic diagram of an electronically controlled hydraulic grease injection system for the present application.

[0035] List of parts and reference numerals:

[0036] 1. Control button; 2. Touch control screen; 3. Digital-to-analog conversion module; 4. Grease injection pipeline; 5. Hydraulic pipeline; 6. Pipeline roller; 7. Hydraulic accumulator; 8. Accumulation solenoid valve; 9. Hydraulic solenoid valve; 10. Hydraulic source; 11. Grease injection solenoid valve; 12. Grease injection pump; 13. Frequency converter; 14. PLC controller; 15. Pressure sensor; 16. Electromagnetic hydraulic reversing valve group; 17. Container shell; 18. Sealing grease box; 19. Control module. DETAILED DESCRIPTION

[0037] The present application is described in detail below with reference to embodiments, but the present application is not limited to these embodiments.

[0038] As attached Figure 1 An electronically controlled hydraulic grease injection system is shown, comprising:

[0039] A control module, comprising a PLC controller 14 and a digital-to-analog conversion module 3, wherein the digital-to-analog conversion module 3 is electrically connected to the PLC controller 14;

[0040] An operating module, comprising a control button 1 and a touch control screen 2, wherein the control button 1 and the touch control screen 2 are electrically connected to the PLC controller 14 respectively;

[0041] The pressure sensors 15 are respectively arranged in the sealing head and the blowout preventer, and are used to collect the pressure values ​​in the sealing head and the blowout preventer. The pressure sensors 15 are respectively electrically connected to the PLC controller 14;

[0042] The grease injection system includes a grease injection pump 12 and a sealing grease storage container, wherein the grease injection pump 12 has one end connected to the storage container, and the other end of the grease injection pump 12 is respectively connected to the sealing head and the part of the blowout preventer that needs grease injection, and the grease injection solenoid valve 11 is provided on the grease injection pump 12, and the grease injection solenoid valve 11 is electrically connected to the digital-to-analog conversion module 3;

[0043] A frequency converter 13, wherein the frequency converter 13 is electrically connected to the grease injection pump 12 and the digital-to-analog conversion module 3;

[0044] A hydraulic system, comprising a hydraulic source 10 and a hydraulic accumulator 7, wherein the hydraulic source 10 and the hydraulic accumulator 7 are respectively connected to the hydraulic cylinder of the sealing head or the blowout preventer, a hydraulic solenoid valve 9 is arranged on the hydraulic source 10, and an energy storage solenoid valve 8 is arranged on the hydraulic accumulator 7, an electromagnetic hydraulic reversing valve group is arranged between the hydraulic solenoid valve 9 and the energy storage solenoid valve 8, and the hydraulic solenoid valve 9 and the energy storage solenoid valve 8 are respectively electrically connected to the digital-to-analog conversion module 3; the hydraulic source 10 serves as the main hydraulic oil supply source of the hydraulic system, and the hydraulic accumulator 7 serves as the backup supply source of the hydraulic oil of the hydraulic system. The hydraulic accumulator 7 is mainly used to store hydraulic oil during normal working. When the storage device of the hydraulic source 10 fails and the wellhead device needs to be operated, the hydraulic oil in the hydraulic accumulator 7 can be used as an emergency power source to drive the hydraulic cylinder to operate and ensure the safety of the wellhead;

[0045] The electromagnetic hydraulic reversing valve group is respectively connected to the hydraulic solenoid valve 9 and the energy storage solenoid valve 8 to realize the supply source of hydraulic oil;

[0046] In the present application, the hydraulic source 10 is pumped into the hydraulic cylinder through, but not limited to, various types of hydraulic pumps; the grease injection pump 12 is any pump in the industry that can pump sealing grease into the sealing head and the parts of the blowout preventer that require grease injection.

[0047] In the present application, the PLC controller controls the action of each solenoid valve by controlling the digital-to-analog conversion module 3 according to the control action of the operation module or the feedback data of the acquisition module, and can also control the frequency converter 13 to adjust the output pressure of the grease pump 12.

[0048] The present application is further described below by the following examples:

[0049] As attached Figure 2 and 3 An electronically controlled hydraulic grease injection system shown includes a housing 17:

[0050] The control module 19, the grease injection pump 12, the frequency converter 13, the hydraulic accumulator, the sealing grease box 18 storing the sealing grease, and the electromagnetic hydraulic reversing valve group 16 are located inside the housing 17, and the operation module, the storage container storing the hydraulic source 10, and the pressure sensor 15 are located outside the housing;

[0051] The operation module includes a control button 1 and a touch control screen 2, which are mounted on an operation table outside the housing 17. Both the control button 1 and the touch control screen 2 can give instructions to the PLC controller 14. A key switch is provided on the operation table to switch between the control button 1 and the touch control screen 2. By switching the key switch, it is determined whether the control is performed by the control button 1 or the touch control screen 2.

[0052] The control module includes a PLC controller and a digital-to-analog conversion module 3.

[0053] The grease injection pump 12 and the hydraulic accumulator 7 are located at the bottom of one side of the inner part of the containing shell, and the hydraulic accumulator 7 is located at one end of the grease injection pump 12; the other end of the grease injection pump 12 faces the outside of the containing shell 17;

[0054] The sealing grease box 18 is located on the side of the grease injection pump 12 facing away from the wall plate of the housing 17;

[0055] The electromagnetic hydraulic reversing valve group 16 and the control module are located above the grease injection pump 12, and the electromagnetic hydraulic reversing valve group is arranged close to the side plate of the containing shell; the control module is located on the side of the electromagnetic hydraulic reversing valve group facing away from the side plate of the containing shell;

[0056] The pipeline drum 6 includes a grease injection pipeline drum wound around the grease injection pipeline 4 and a hydraulic pipeline drum wound around the hydraulic pipeline 5. The grease injection pipeline drum and the hydraulic pipeline drum are arranged up and down and are located on the side of the control module facing away from the electromagnetic hydraulic reversing valve group.

[0057] In this embodiment, the input end of the grease injection pump 12 is connected to the sealing grease box 18 storing sealing grease, and the connection between the grease injection pump 12 and the sealing head or the blowout preventer is realized through the grease injection pipeline 4, and the grease injection pipeline 4 is wound on the grease injection pipeline drum, one end of the grease injection pipeline 4 is connected to the output end of the grease injection pump 12, and the other end of the grease injection pipeline 4 is connected to the sealing head or the part of the blowout preventer that needs grease injection, and the grease injection pipeline drum is used for storing and arranging the grease injection pipeline 4;

[0058] The storage container of the hydraulic source 10 and the hydraulic accumulator 7 are respectively connected to the hydraulic cylinder of the sealing head or the blowout preventer through the hydraulic pipeline 5. The hydraulic pipeline 5 is wound on the hydraulic pipeline drum, one end of the hydraulic pipeline 5 is respectively connected to the storage container of the hydraulic source 10 and the hydraulic accumulator 7, and the other end of the hydraulic pipeline 5 is respectively connected to the hydraulic cylinder of the sealing head or the blowout preventer.

[0059] The plurality of solenoid valves include a grease injection solenoid valve 11, a hydraulic solenoid valve 9 and an energy storage solenoid valve 8. The grease injection solenoid valve 11 is connected to the controller of a grease injection pump 12; the hydraulic solenoid valve 9 is connected to the controller of a hydraulic pump that pumps into a hydraulic source 10, and the energy storage solenoid valve 8 is connected to the controller of a hydraulic accumulator 7.

[0060] The hydraulic solenoid valve 9 and the energy storage solenoid valve 8 switch the hydraulic oil supply source through the electromagnetic hydraulic reversing valve group 16, and the electromagnetic hydraulic reversing valve group 16 is connected to the PLC controller 14. The electromagnetic hydraulic reversing valve group 16 is located on the side of the control module facing the housing wall plate;

[0061] The controller of the driving motor of the grease injection pump 12 is also electrically connected to a frequency converter 13 , and the frequency converter 13 is located at one end of the grease injection pump 12 facing outside the housing.

[0062] The frequency converter 13 , the grease injection solenoid valve 11 , the hydraulic solenoid valve 9 and the energy storage solenoid valve 8 are electrically connected to the digital-to-analog conversion module 3 , respectively.

[0063] In this embodiment, the pressure sensor 15 collects the pressure value inside the sealing head or the blowout preventer, and feeds the pressure value back to the PLC controller 14. The PLC controller 14 controls the digital-to-analog conversion module 3 to control the grease injection solenoid valve 11, the hydraulic solenoid valve 9 and the energy storage solenoid valve 8 to make corresponding actions, and controls the frequency converter 13 to adjust the output pressure of the grease injection pump 12, so as to achieve the pressure value inside the sealing head or the blowout preventer meeting the requirements. Specifically:

[0064] The PLC controller 14 controls the frequency converter 13 to drive the motor of the grease injection pump 12, and determines the output of the motor of the grease injection pump 12 according to the feedback pressure value. The output value of the sealing grease of the PLC controller is given by the control button 1 or the touch control screen 2, and the PLC controller 14 controls the digital-to-analog conversion module 3 to control the action of the grease injection solenoid valve 11, and the sealing grease reaches the required output position through the grease injection pipeline 4.

[0065] The hydraulic source 10 and the hydraulic accumulator 7 are respectively connected to the input end of the electromagnetic hydraulic reversing valve group 16. The output pipeline of the electromagnetic hydraulic reversing valve group 16 is provided with a hydraulic solenoid valve 9. The hydraulic solenoid valve 9 delivers the hydraulic oil to the designated position (i.e., the hydraulic cylinder of the sealing head or the blowout preventer) through the hydraulic pipeline 5. After the hydraulic output value of the PLC controller 14 is given through the control button 1 or the touch control screen 2, the PLC controller 14 controls the solenoid valve action of the hydraulic solenoid valve 9 through the digital-to-analog conversion module 3, and delivers the hydraulic oil to the designated position through the hydraulic pipeline 5 to control the action of the blowout preventer or the sealing head and other components. The filling and releasing actions of the hydraulic accumulator 7 are also completed by the PLC controller 14 controlling the accumulator solenoid valve 8 through the digital-to-analog conversion module 3.

[0066] In this embodiment, the hydraulic solenoid valve 9 is provided with an operating handle for realizing close-range manual operation of the hydraulic solenoid valve 9 to cope with abnormal conditions such as electronic control failure or power outage.

[0067] The above are only a few embodiments of the present application and do not constitute any form of limitation to the present application. Although the present application is disclosed as above with preferred embodiments, it is not intended to limit the present application. Any technician familiar with the profession, without departing from the scope of the technical solution of the present application, using the technical content disclosed above to make slight changes or modifications are equivalent to equivalent implementation cases and fall within the scope of the technical solution.

Claims

1. An electronically controlled hydraulic grease injection system, characterized in that: include: Pressure sensors are respectively arranged in the sealing head and the blowout preventer, and are used to collect pressure values ​​in the sealing head and the blowout preventer; Grease injection system, used to inject sealing grease into the sealing head and the parts of the blowout preventer that need grease injection; Hydraulic system, used to replenish hydraulic oil into the hydraulic cylinders of the sealing head and the blowout preventer; A plurality of solenoid valves, which are respectively arranged at the output ends of the grease injection system and the hydraulic system, respectively controlling the on-off of the sealing grease and hydraulic oil delivery and the regulation of the delivery flow; A control module, electrically connected to the pressure sensor, the grease injection system, the hydraulic system and the plurality of solenoid valves; The operating module includes a control button and a touch control screen, and the control button and the touch control screen are electrically connected to the control module respectively.

2. The electronically controlled hydraulic grease injection system according to claim 1, characterized in that: The control module includes a PLC controller and a digital-to-analog conversion module; The PLC controller is electrically connected to the digital-to-analog conversion module, the pressure sensor, the control button and the touch control screen respectively; The digital-to-analog conversion modules are respectively connected to a plurality of the solenoid valves.

3. The electronically controlled hydraulic grease injection system according to claim 2, characterized in that: The grease injection system comprises a grease injection pump and a sealing grease container; One end of the grease injection pump is connected to the sealing grease container, and the other end of the grease injection pump is connected to the sealing head and the part in the blowout preventer that needs grease injection, and the output end of the grease injection pump is provided with a grease injection solenoid valve; The grease injection solenoid valve is electrically connected to the digital-to-analog conversion module.

4. The electronically controlled hydraulic grease injection system according to claim 3, characterized in that: The grease injection system also includes a frequency converter; The frequency converter is electrically connected to the driving motor and the digital-to-analog conversion module of the grease injection pump respectively.

5. The electronically controlled hydraulic grease injection system according to claim 2, characterized in that: The hydraulic system includes a hydraulic source and a hydraulic pump; The input end of the hydraulic pump is connected to the hydraulic source, the output end of the hydraulic pump is connected to the sealing head and the hydraulic cylinder of the blowout preventer, and the driving motor of the hydraulic pump is electrically connected to the PLC controller; The output end of the hydraulic source is provided with a hydraulic solenoid valve; The hydraulic solenoid valve is electrically connected to the digital-to-analog conversion module.

6. The electronically controlled hydraulic grease injection system according to claim 5, characterized in that: The input end of the hydraulic pump is also provided with a hydraulic accumulator for storing spare hydraulic oil; The output end of the hydraulic accumulator is connected to the input pipeline of the hydraulic pump, and the hydraulic accumulator is provided with an energy storage solenoid valve; The energy storage solenoid valve is electrically connected to the digital-to-analog conversion module.

7. The electronically controlled hydraulic grease injection system according to claim 5, characterized in that: The hydraulic solenoid valve is also provided with an operating handle; The operating handle is connected to the hydraulic solenoid valve.

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