CN111853322A - Manual-automatic integrated throttle valve and use method - Google Patents
Manual-automatic integrated throttle valve and use method Download PDFInfo
- Publication number
- CN111853322A CN111853322A CN202010559000.0A CN202010559000A CN111853322A CN 111853322 A CN111853322 A CN 111853322A CN 202010559000 A CN202010559000 A CN 202010559000A CN 111853322 A CN111853322 A CN 111853322A
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- Prior art keywords
- valve
- servo motor
- plc
- valve rod
- hollow servo
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- 238000000034 method Methods 0.000 title claims abstract description 7
- 238000001514 detection method Methods 0.000 claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 21
- 230000002452 interceptive effect Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 3
- 239000007789 gas Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003638 chemical reducing agent Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000003345 natural gas Substances 0.000 description 1
- 239000003209 petroleum derivative Substances 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/04—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor
- F16K31/05—Actuating devices; Operating means; Releasing devices electric; magnetic using a motor specially adapted for operating hand-operated valves or for combined motor and hand operation
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K37/00—Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given
- F16K37/0025—Electrical or magnetic means
- F16K37/005—Electrical or magnetic means for measuring fluid parameters
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Electrically Driven Valve-Operating Means (AREA)
Abstract
The invention discloses a manual-automatic integrated throttle valve and a use method thereof, relating to the technical field of throttle valves, comprising a valve body, a PLC (programmable logic controller) and a hollow servo motor, the valve body is provided with a screw rod-shaped valve rod, an output shaft of the hollow servo motor is internally provided with a ring nut, the inner side of the ring nut is provided with a buckle matched with the thread of the valve rod, the screw rod bolt is sleeved outside the valve rod, a hand wheel is fixedly sleeved on the valve rod, the hollow servo motor is positioned between the hand wheel and the valve body, the input end of the PLC controller is electrically connected with a valve rod position detection mechanism and a pressure detection mechanism, the output end of the PLC is connected with a driver of the hollow servo motor, the PLC controls the driver according to a pressure signal of the pressure detection mechanism, the driver controls the hollow servo motor to rotate, and the hollow servo motor drives the valve rod to ascend and descend; the invention has simple structure, can meet the requirements of pressure control precision and speed, and is convenient to realize the control under emergency.
Description
Technical Field
The invention relates to the technical field of throttle valves, in particular to a manual-automatic integrated throttle valve and a using method thereof, which are used for throttling and pressure controlling of an oil-gas well.
Background
In oil and gas engineering work, a manual throttle valve is generally adopted to control a throttling device or a nozzle tip, and the following main problems exist: the labor intensity of manual operation is high, the misoperation is easily caused by fatigue, and the operation risk is increased; the opening degree is not easy to control, so that the pressure at the wellhead is too low or too high, the shaft is leaked, or a large amount of oil-gas flow overflows, and the engineering requirements of the petroleum and natural gas shaft cannot be met; the response time is slow and once an emergency occurs, the control cannot be immediately carried out as required, and the risk of wellbore pressure control exists.
In order to solve the problems of the manual throttle valve, an enterprise designs an electric control throttle valve to control a throttling device or a nozzle tip, but the existing electric control throttle valve has the following two problems: the response speed is high, but the pressure fluctuation is large, and the pressure overshoot condition is prominent; the speed response is slow, but the requirements of quick response and accurate pressure control of special working conditions such as sudden pump stop and the like cannot be met.
In order to solve the problems of the electric control throttle valve, a worm gear and a speed reducer are additionally arranged between a motor and a screw rod of the throttle valve, although the mode meets the requirements of pressure control precision and speed, when the motor of the electric control throttle valve and a control system of the motor of the electric control throttle valve are in failure, the throttle valve cannot be controlled manually in an emergency, if the electric control throttle valve is designed into a manual-automatic integral throttle valve, the number of switching turns of the throttle valve from full opening to full closing is changed from original several turns into dozens of turns due to the existence of the worm gear and the speed reducer, and the control under the emergency condition is not facilitated.
Disclosure of Invention
The invention aims to: in order to solve the problem that the existing manual-automatic integrated throttle valve is not beneficial to control in emergency, the invention provides the manual-automatic integrated throttle valve which can meet the requirements of pressure control precision and speed and is convenient to realize control in emergency.
The invention specifically adopts the following technical scheme for realizing the purpose:
the utility model provides a manual-automatic throttle valve, includes valve body, PLC controller and hollow servo motor, be equipped with the shaft-like valve rod of silk on the valve body, be equipped with ring nut in hollow servo motor's the output shaft, the ring nut inboard is equipped with the screw thread matched with buckle with the valve rod, the buckle card is in the thread gap of valve rod, the lead screw bolt cover is established in the valve rod outside, fixed cover is equipped with the hand wheel on the valve rod, hollow servo motor is located between hand wheel and the valve body, PLC controller's input electricity is connected with valve rod position detection mechanism and pressure detection mechanism, PLC controller's output is connected with hollow servo motor's driver.
Further, the valve rod position detection mechanism comprises two position sensors arranged on one side of the valve rod, the two position sensors are arranged along the axial direction of the valve rod, and one of the position sensors is connected with the side face of the valve rod.
The use method of the manual-automatic integrated throttle valve further comprises an explosion-proof control box, wherein a switch power supply is arranged in the explosion-proof control box and is electrically connected with a PLC (programmable logic controller), the PLC and a driver are arranged in the explosion-proof control box, an interactive panel is arranged on the explosion-proof control box, and the interactive panel is electrically connected with the PLC.
Further, the pressure detection mechanism comprises a plurality of pressure sensors arranged on a pipeline at the front end of the throttle valve, and the pressure sensors are electrically connected with the input end of the PLC.
Further, the PLC receives a pressure signal detected by the pressure detection mechanism in real time, when the detected pressure Pci is smaller than a set pressure Pct-pressure control precision delta Pc, the PLC sends an instruction to the driver, the driver controls the hollow servo motor to rotate in the forward direction, the hollow servo motor drives the valve rod to descend, and the valve position of the throttle valve is reduced; when Pci is larger than the set pressure Pct + the pressure control precision delta Pc, the PLC sends an instruction to the driver, the driver controls the hollow servo motor to rotate reversely, the hollow servo motor drives the valve rod to ascend, and the valve position of the throttle valve is increased; when the motor and the PLC fail, the hand wheel is manually rotated, so that the valve position of the throttle valve can be quickly adjusted; the PLC controller receives position signals detected by the valve rod detection mechanism in real time, and when the valve rod is detected to be in the initial position or the final position, the PLC controller sends an instruction to the driver, and the driver controls the hollow servo motor to stop rotating.
The invention has the following beneficial effects:
1. the invention has simple structure, the PLC controller controls the hollow servo motor to rotate through the driver according to the signal of the pressure detection mechanism, the hollow servo motor drives the valve rod to descend or ascend, thereby realizing the adjustment of the valve position, when the hollow servo motor and the PLC controller fail, the valve position of the throttle valve can be quickly adjusted through rotating the hand wheel, and the number of turns of the throttle valve from full opening to full closing is less, thereby being convenient for realizing the control under emergency;
2. the position detection mechanism is convenient for detecting the position of the valve rod, and avoids the damage of the valve rod caused by over-rotation of the valve rod.
Drawings
FIG. 1 is a schematic structural view of the present invention;
reference numerals: 1-valve body, 2-hollow servo motor, 3-valve rod, 4-hand wheel and 5-position sensor.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
In the description of the embodiments of the present invention, it should be noted that the terms "inside", "outside", "upper", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally arranged when products of the present invention are used, and are only used for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operated, and thus, cannot be construed as limiting the present invention.
Example 1
As shown in fig. 1, this embodiment provides a manual-automatic throttle valve, including valve body 1, PLC controller and hollow servo motor 2, be equipped with the shaft-like valve rod 3 of silk on the valve body 1, be equipped with screw-nut in hollow servo motor 2's the output shaft, the screw-nut cover is established in the valve rod 3 outside, fixed cover is equipped with hand wheel 4 on the valve rod 3, hollow servo motor 2 is located between hand wheel 4 and the valve body 1, the input electricity of PLC controller is connected with 3 position detection mechanisms of valve rod and pressure detection mechanism, the output of PLC controller is connected with hollow servo motor 2's driver.
The working principle is as follows: the LC controller controls the hollow servo motor 2 to rotate through the driver according to a signal of the pressure detection mechanism, the hollow servo motor 2 drives the valve rod 3 to descend or ascend, so that the valve position is adjusted, when the hollow servo motor 2 and the PLC controller fail, the valve position of the throttle valve can be quickly adjusted through the rotary hand wheel 4, the number of turns of the throttle valve from full opening to full closing is small, and the control under emergency is convenient to realize.
Example 2
As shown in fig. 1, the present embodiment is further improved on the basis of embodiment 1, and specifically, the valve rod 3 position detection mechanism includes two position sensors 5 disposed on one side of the valve rod 3, the two position sensors 5 are disposed along the axial direction of the valve rod 3, and one of the position sensors 5 is connected to a side surface of the valve rod 3.
Example 3
As shown in fig. 1, this embodiment is further improved on the basis of embodiment 1, and specifically includes an explosion-proof control box, a switching power supply is arranged in the explosion-proof control box, the switching power supply is electrically connected with a PLC controller, the PLC controller and a driver are arranged in the explosion-proof control box, an interactive panel is arranged on the explosion-proof control box, and the interactive panel is electrically connected with the PLC controller.
Example 4
As shown in fig. 1, in the present embodiment, a method for using a manual-automatic throttle valve is provided, in which a PLC controller receives a pressure signal detected by a pressure detection mechanism in real time, and when a detected pressure Pci is smaller than a set pressure Pct — pressure control accuracy Δ Pc, the PLC controller sends an instruction to a driver, the driver controls a hollow servo motor 2 to rotate in a forward direction, the hollow servo motor 2 drives a valve rod 3 to descend, and a valve position of the throttle valve is reduced; when the Pci is larger than the set pressure Pct + the pressure control precision delta Pc, the PLC sends an instruction to the driver, the driver controls the hollow servo motor 2 to rotate reversely, the hollow servo motor 2 drives the valve rod 3 to ascend, and the valve position of the throttle valve is increased; when the motor and the PLC fail, the hand wheel 4 is manually rotated, and the valve position of the throttle valve can be quickly adjusted; the PLC controller receives position signals detected by the valve rod 3 detection mechanism in real time, and when the valve rod 3 is detected to be in the initial position or the final position, the PLC controller sends an instruction to the driver, and the driver controls the hollow servo motor 2 to stop rotating.
Claims (4)
1. The utility model provides a manual-automatic throttle valve, its characterized in that, includes valve body (1), PLC controller and hollow servo motor (2), be equipped with silk rod-like valve rod (3) on valve body (1), be equipped with ring nut in the output shaft of hollow servo motor (2), the ring nut inboard is equipped with the screw thread matched with buckle with valve rod (3), the lead screw bolt cover is established in the valve rod (3) outside, fixed cover is equipped with hand wheel (4) on valve rod (3), hollow servo motor (2) are located between hand wheel (4) and valve body (1), the input electricity of PLC controller is connected with valve rod (3) position detection mechanism and pressure detection mechanism, the output of PLC controller is connected with the driver of hollow servo motor (2).
2. A throttle valve according to claim 1, characterized in that the valve stem (3) position detecting means comprises two position sensors (5) arranged on one side of the valve stem (3), two position sensors (5) being arranged axially along the valve stem (3) and one of the position sensors (5) being connected to the side of the valve stem (3).
3. The manual-automatic integrated throttle valve according to claim 1 or 2, characterized by further comprising an explosion-proof control box, wherein a switching power supply is arranged in the explosion-proof control box, the switching power supply is electrically connected with the PLC, the PLC and the driver are arranged in the explosion-proof control box, an interactive panel is arranged on the explosion-proof control box, and the interactive panel is electrically connected with the PLC.
4. A use method of a manual-automatic integrated throttle valve is characterized in that a PLC (programmable logic controller) receives a pressure signal detected by a pressure detection mechanism in real time, when the detected pressure Pci is smaller than a set pressure Pct-pressure control precision delta Pc, the PLC sends an instruction to a driver, the driver controls a hollow servo motor (2) to rotate in the forward direction, the hollow servo motor (2) drives a valve rod (3) to descend, and the valve position of the throttle valve is reduced; when Pci is larger than the set pressure Pct + the pressure control precision delta Pc, the PLC sends an instruction to the driver, the driver controls the hollow servo motor (2) to rotate reversely, the hollow servo motor (2) drives the valve rod (3) to ascend, and the valve position of the throttle valve is increased; when the motor and the PLC fail, the hand wheel (4) is manually rotated, so that the valve position of the throttle valve can be quickly adjusted; the PLC controller receives a position signal detected by the valve rod (3) detection mechanism in real time, and when the valve rod (3) is detected to be in the initial or final position, the PLC controller sends an instruction to the driver, and the driver controls the hollow servo motor (2) to stop rotating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559000.0A CN111853322A (en) | 2020-06-18 | 2020-06-18 | Manual-automatic integrated throttle valve and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010559000.0A CN111853322A (en) | 2020-06-18 | 2020-06-18 | Manual-automatic integrated throttle valve and use method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111853322A true CN111853322A (en) | 2020-10-30 |
Family
ID=72987230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010559000.0A Pending CN111853322A (en) | 2020-06-18 | 2020-06-18 | Manual-automatic integrated throttle valve and use method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111853322A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734349A (en) * | 2020-06-18 | 2020-10-02 | 四川恒铭泽石油天然气工程有限公司 | Manual-automatic integrated throttling and pressure controlling system |
| CN116066021A (en) * | 2022-10-21 | 2023-05-05 | 中国石油天然气集团有限公司 | Flat valve and opening and closing method |
-
2020
- 2020-06-18 CN CN202010559000.0A patent/CN111853322A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111734349A (en) * | 2020-06-18 | 2020-10-02 | 四川恒铭泽石油天然气工程有限公司 | Manual-automatic integrated throttling and pressure controlling system |
| CN116066021A (en) * | 2022-10-21 | 2023-05-05 | 中国石油天然气集团有限公司 | Flat valve and opening and closing method |
| CN116066021B (en) * | 2022-10-21 | 2024-01-02 | 中国石油天然气集团有限公司 | Flat valve and opening and closing method |
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