CN212054652U - Flow rate control device and water injection equipment - Google Patents
Flow rate control device and water injection equipment Download PDFInfo
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- CN212054652U CN212054652U CN202020168683.2U CN202020168683U CN212054652U CN 212054652 U CN212054652 U CN 212054652U CN 202020168683 U CN202020168683 U CN 202020168683U CN 212054652 U CN212054652 U CN 212054652U
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Abstract
The utility model provides a flow control device and water injection equipment belongs to oil gas well test instrument field. The flow control device includes: the device comprises a control valve execution unit, an adjusting controller, a flow generator and a flow sensor; the output end of the flow sensor is connected with the input end of the flow generator, and the control output end of the control valve execution unit is connected with the valve rod of the flow regulating valve; the regulating controller comprises a comparator, one input end of the comparator is connected with the output end of the flow generator, the other input end of the comparator is a flow threshold voltage end, and the output end of the comparator is connected with the signal input end of the control valve execution unit. The comparator in the regulation controller automatically controls the opening of the flow regulating valve, so that the flow of the fluid is kept consistent, and the problems of low water injection flow regulation precision and low stability caused by manually regulating the valve of the water injection flow according to the numerical change of the flowmeter can be solved.
Description
Technical Field
The utility model relates to an oil gas well test instrument field, in particular to flow control device and water injection equipment.
Background
As oil fields are developed, the energy of the oil reservoir itself is consumed continuously, so that the pressure of the oil reservoir is reduced continuously. It is necessary to use water injection equipment to inject water with satisfactory quality from the water injection well into the oil reservoir to maintain or increase the pressure of the oil reservoir, thereby increasing the recovery rate of the oil field and prolonging the development life of the oil field.
The water injection equipment generally comprises a flowmeter for metering the flow rate of water injection and a valve for controlling the flow rate of water injection, and relevant workers control the flow rate of water injection by observing the value change on the flowmeter and then adjusting the valve when using the water injection equipment to inject water into an oil field.
In implementing the present disclosure, the inventors found that the related art has at least the following problems: because the valve of water injection flow is adjusted according to the numerical value change of the flowmeter by manpower, the accuracy and the stability of water injection flow adjustment are lower, and the delay of water injection flow adjustment can exist.
SUMMERY OF THE UTILITY MODEL
The embodiment of the disclosure provides a flow control device and water injection equipment, which can solve the problem that the accuracy and stability of water injection flow regulation are low because the valve for manually adjusting the water injection flow according to the numerical value change of a flowmeter. The technical scheme is as follows:
in one aspect, a flow control device is provided, which includes a flow control valve, and the flow control device further includes: the system comprises an adjusting controller, a control valve execution unit and a flow sensor; the regulating controller comprises a comparator, the output end of the flow sensor is electrically connected with one input end of the comparator, the other input end of the comparator is a flow threshold voltage end, and the output end of the comparator is electrically connected with the signal input end of the control valve execution unit; and the control part of the control valve execution unit is connected with the valve rod of the flow regulating valve.
Optionally, the control valve execution unit comprises a motor; the output shaft of the motor is the control part, the output shaft of the motor and the valve rod of the flow regulating valve are concentrically arranged, and the output shaft is in threaded connection with the valve rod.
Optionally, the flow control device further comprises a flow signal generator, and the output end of the flow sensor is electrically connected with the comparator through the flow signal generator.
Optionally, the adjustment controller further comprises: a signal amplification circuit; and the output end of the comparator is electrically connected with the signal input end of the control valve execution unit through the signal amplification circuit.
Optionally, the flow control device further comprises: an inlet pressure sensor disposed at an inlet of the flow control valve.
Optionally, the flow control device further comprises: an outlet pressure sensor disposed at an outlet of the flow regulating valve.
Optionally, the flow control device further comprises: a first mounting seat; one end of the first mounting seat is fixed on the outer side wall of the flow regulating valve, an output line of the flow sensor is electrically connected with the adjusting controller through the inside of the first mounting seat, and the adjusting controller is fixed at the other end of the first mounting seat.
Optionally, the first mounting base comprises a base and a supporting cylinder, the base is fixed to the flow regulating valve, the base is provided with a mounting groove, the supporting cylinder is embedded in the mounting groove, and the base and the supporting cylinder are arranged in a sealing mode.
Optionally, the flow control device further comprises: a second mounting seat; the second mounting seat is arranged on the flow regulating valve, and the control valve execution unit is arranged on the second mounting seat.
In another aspect, there is provided a water filling apparatus comprising the flow control device described in the above embodiments.
The technical scheme provided by the embodiment of the disclosure has the following beneficial effects: according to the control valve actuating unit, the flow sensor is used for detecting the flow of fluid, and then the comparator drives the control valve actuating unit according to the flow electric signal generated by the flow sensor, so that the control valve actuating unit adjusts the opening of the flow adjusting valve, and the flow of the fluid is always in a required range. This scheme is by flow sensor, comparator cooperation control valve execution unit automatic execution, need not the manual work and adjusts, has saved the manpower on the one hand, and on the other hand can solve because manual regulation leads to the problem that water injection flow control precision and stability are low.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
FIG. 1 is a block diagram of a flow control device provided by an embodiment of the present disclosure;
FIG. 2 is a schematic view of a flow control device according to another embodiment of the present disclosure;
fig. 3 is a block diagram of a flow control device provided in another embodiment of the present disclosure.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a flow control device according to an embodiment of the present disclosure, and is shown in fig. 1. The flow control device includes a flow regulating valve 10, a regulation controller 1, a control valve execution unit 2, and a flow sensor 3.
The regulating controller 1 comprises a comparator 101, wherein the output end of the flow sensor 3 is electrically connected with one input end of the comparator 101, the other input end of the comparator 101 is a flow threshold voltage end, and the output end of the comparator 101 is electrically connected with the signal input end of the control valve execution unit 2; the control unit of the control valve actuator 2 is connected to the stem 110 of the flow rate control valve 10.
In the disclosed embodiment, the flow sensor detects the flow rate of the fluid, and the comparator drives the control valve actuator according to the flow electrical signal generated by the flow sensor, so that the control valve actuator adjusts the opening of the flow regulating valve to keep the fluid flow rate within a required range (within an allowable error). This scheme is by flow sensor, comparator cooperation control valve execution unit automatic execution, need not the manual work and adjusts, has saved the manpower on the one hand, and on the other hand can solve because manual regulation leads to the problem that water injection flow control precision and stability are low. The device can realize the accurate automatic control of high pressure water injection, has improved the stability of the flow size of water injection greatly.
The flow control device provided by the embodiment of the disclosure can be applied to flow control of water, oil and various other fluids.
The operation of the flow control device is described below by taking the fluid as liquid water as an example: the detection end of the flow sensor 3 for detecting the flow value is arranged at the outlet of the flow control valve and is in contact with the flowing liquid water, and the flow sensor 3 generates a flow electric signal according to the flow of the liquid water and transmits the flow electric signal to the comparator 101 in the regulating controller 1. The comparator 101 compares the voltage value of the flow electrical signal with the voltage value at the flow threshold voltage end, and outputs a control signal according to the comparison result, wherein the control signal comprises: positive voltage control signals and negative voltage control information that respectively control the movement of the valve stem 110 in different directions. When the voltage value of the flow rate electric signal is the same as the voltage value at the flow rate threshold voltage terminal, the comparator 101 does not output the control signal. The comparator 101 transmits the control signal to the control valve execution unit 2, the control valve execution unit 2 responds to the control signal and controls the valve rod 110 of the flow regulating valve 10 to move upwards or downwards through the control part, and the valve rod 110 moves up and down to increase or decrease the opening of the flow regulating valve, so that the flow of the liquid water is controlled.
Fig. 2 is a schematic structural diagram of a flow control device provided by an embodiment of the present disclosure, referring to fig. 2, the flow control device may be disposed between two sections of pipes to control the flow rate of a fluid in the pipes, where the fluid may be liquid water.
As shown in fig. 2, the control valve actuator 2 includes a motor 21, an output shaft 210 of the motor 21 is a control part, the output shaft of the motor is concentrically arranged with the valve stem 110 of the flow rate control valve 10, and the output shaft is threadedly coupled with the valve stem 110.
The output shaft 210 of the motor 21 is provided with a threaded groove for mounting the valve stem 110, and one end of the valve stem 110 is provided with an external thread matched with the valve stem. One end of the valve stem 110 is threadedly coupled to the threaded groove. The lower end of the valve stem 110 is connected with a valve block 111, and the valve block 111 moves up and down under the driving of the valve stem 110. When the valve block 111 moves up and down, the channels in the flow regulating valve can be blocked to different degrees, so that the purpose of regulating the flow is achieved.
In the structure shown in fig. 2, the valve stem 110 is provided with a slide way, so that the valve block 111 can only slide up and down in the slide way, but cannot rotate, so that the rotation of the motor 21 can be converted into the linear movement of the valve block 111.
Illustratively, a signal input end of the motor 21 is connected to an output end of the comparator 101, and the motor 21 performs clockwise rotation or counterclockwise rotation according to a control signal of the comparator 101, so as to control the valve block 111 to move up or down, thereby realizing adjustment of the opening degree of the flow regulating valve 10.
In other embodiments of the present disclosure, the control valve actuator 2 may further include a transmission assembly for converting a rotational motion of the motor into a linear motion, and a control portion of the transmission assembly is connected to the valve stem 110, so as to directly drive the valve stem 110 and the valve block 111 to move up and down. Illustratively, the transmission assembly may be a worm gear mechanism, a gear mechanism, or the like, so as to control the opening degree of the flow regulating valve 10.
Fig. 3 is a block diagram of a flow control device according to another embodiment of the present disclosure, referring to fig. 3, the flow control device may further include a flow signal generator 4, an output terminal of the flow sensor 3 is electrically connected to the comparator 101 through the flow signal generator 4, and the flow signal generator 4 is configured to modulate an electrical flow signal generated by the flow sensor 3 and transmit the modulated electrical flow signal to the comparator 101. The flow signal generator 4 can perform filtering, amplifying and other processing on the flow electric signal generated by the flow sensor 3, and then output the flow electric signal to the comparator 101, so that the accuracy of subsequent signal comparison is ensured.
Referring again to fig. 3, the regulating controller 1 may further include a signal amplifying circuit 102, and the output terminal of the comparator 101 is electrically connected to the signal input terminal of the control valve actuating unit 2 through the signal amplifying circuit 102. The voltage value of the control signal output from the comparator 101 is amplified by the signal amplifying circuit, so that the amplified control signal can drive the motor in the control valve actuator 2 to operate.
In an embodiment of the present disclosure, the flow control valve 10 includes a valve body 112, a water inlet pipe 113 and a water outlet pipe 114 are respectively disposed at two ends of the valve body 112, and the flow sensor is disposed on the water outlet pipe 114. One end of the water inlet pipe 113 and one end of the water outlet pipe 114 are respectively connected to the valve body 112, the other end of the water inlet pipe 113 and the other end of the water outlet pipe 114 are respectively provided with a connecting flange 115, and the connecting flange 115 is used for being connected and conducted with other pipelines, so that the flow of the pipelines is controlled.
In an embodiment of the present disclosure, the flow control device may further include: the inlet pressure sensor 5 and the inlet pressure sensor 5 are disposed at the inlet of the flow regulating valve 10, that is, the inlet pressure sensor 5 is disposed on the water inlet pipe 113, and is used for detecting the pressure value of the liquid water in the water inlet pipe 113.
In an embodiment of the present disclosure, the flow control device may further include: the outlet pressure sensor 6 and the outlet pressure sensor 6 are arranged at the outlet of the flow regulating valve 10, that is, the outlet pressure sensor is arranged on the water outlet pipe 114 and is used for detecting the pressure value of the liquid water in the water pipe 114.
Inlet pressure sensor 5 and outlet pressure sensor 6 are set up respectively in flow control valve 10's inlet outlet department for gather liquid water at flow control valve 10 different position department pressure value, and transmit the pressure value for external equipment through signal transmission circuit, the pressure value of real-time supervision liquid water changes, thereby make flow control device realize fluid pressure value real-time supervision's function, can also judge faults such as the flow control valve leakage appear through the change of two pressure values.
Illustratively, when the flow control device is used in an oilfield water injection device, water injection pressure values at the inlet and the outlet of the flow control valve 10 are respectively collected by the inlet pressure sensor 5 and the outlet pressure sensor 6, and the water injection pressure values can also be used for drawing an oilfield water absorption index curve, wherein the oilfield water absorption index curve refers to a relation curve of injection quantity and water injection pressure under different water injection pressures.
In an embodiment of the present disclosure, the flow control device may further include: a first mounting base 7; one end of the first mounting seat 7 is fixed on the outer side wall of the flow regulating valve 10, an output line of the flow sensor 3 is electrically connected with the adjusting controller 1 through the inside of the first mounting seat 7, and the adjusting controller 1 is fixed on the other end of the first mounting seat 7.
In the embodiment of the present disclosure, the regulating controller 1 is fixed on the flow regulating valve 10, and the flow sensor 3, the flow signal generator 4 and the output line are disposed in the first mounting seat 7, so that the shaking of the regulating controller 1 and the exposure of the output line in the external environment can be avoided, and the service life of the flow control device is prolonged.
In an embodiment of the present disclosure, the first mounting seat 7 includes a base 71 and a supporting cylinder 72, the base 71 is fixed on the flow regulating valve 10, the base 71 is provided with a mounting groove, the supporting cylinder 72 is embedded in the mounting groove, and the base 71 and the supporting cylinder 72 are arranged in a sealing manner.
Illustratively, referring to fig. 2, the adjustment controller 1 is fixed to one end of a support cylinder 72 by screws, and the other end of the support cylinder 72 is fixed to a base 71 by screws. That is, the first mounting seat 7 fixes the regulator controller 1 and the flow rate regulating valve 10 together, the flow rate signal generator 4 may be provided in the first mounting seat 7, and the output lines of the flow rate sensor 3 and the flow rate signal generator 4 are connected to the regulator controller 1 through the inner space of the support cylinder 72.
As shown in fig. 2, the support cylinder 72 may be cylindrical in shape, and the base 71 has a structure with a correspondingly shaped recess. In other embodiments, the shapes of the supporting cylinder 72 and the base 71 may be other shapes, for example, the supporting cylinder 72 may be a square cylinder, which is not limited in this application.
In an embodiment of the present disclosure, the flow control device further includes: a second mounting seat 8; the second mount 8 is provided on the flow rate adjustment valve 10, and the control valve actuator unit 2 is provided on the second mount 8.
For example, referring to fig. 2, the second mounting seat 8 may be a sleeve, one end of the second mounting seat 8 is fixed on the valve body 112 of the flow regulating valve 10, the other end is mounted with the control valve actuator 2, and the control portion of the control valve actuator 2 and a portion of the valve stem 110 are located in the middle of the sleeve. The arrangement can reduce the corrosion of the joint of the control part and the valve rod 110 by the external environment, and prolong the service life of the flow control device.
The flow control device provided by the disclosure has the advantages of simple structure, convenience in use, high control precision, corrosion resistance and high pressure resistance, and can be controlled automatically or manually (a manual control motor). Because no movable part is arranged, the device has the characteristics of stable performance, difficult blockage, no abrasion, low failure rate and long service life, and the precision cannot be reduced after long-term use.
The embodiment of the present disclosure further provides a water injection apparatus, which includes the flow control device in the above embodiment.
Illustratively, the water injection equipment is used for injecting water to an oil layer in an oil field, and comprises a flow control device and a flow system, wherein the water injection output end of the flow system is connected with the input end of a flow regulating valve in the flow control device, and the pressure signal output end of the flow control device is connected with the pressure signal receiving end of the flow system. The flow control device controls the flow of water injected into the oil layer, and the pressure value of water injection is monitored in real time.
The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.
Claims (10)
1. A flow control device comprising a flow regulating valve (10), characterized in that it further comprises: the device comprises an adjusting controller (1), a control valve execution unit (2) and a flow sensor (3);
the regulating controller (1) comprises a comparator (101), the output end of the flow sensor (3) is electrically connected with one input end of the comparator (101), the other input end of the comparator (101) is a flow threshold voltage end, and the output end of the comparator (101) is electrically connected with the signal input end of the control valve execution unit (2);
the control part of the control valve execution unit (2) is connected with the valve rod (110) of the flow regulating valve (10).
2. A flow control device according to claim 1, characterised in that the control valve actuator unit (2) comprises an electric motor (21);
an output shaft (210) of the motor (21) is the control part, the output shaft (210) of the motor (21) and a valve rod (110) of the flow regulating valve (10) are concentrically arranged, and the output shaft (210) is in threaded connection with the valve rod (110).
3. A flow control device according to claim 2, further comprising a flow signal generator (4), the output of the flow sensor (3) being electrically connected to the comparator (101) via the flow signal generator (4).
4. The flow control device according to claim 1, characterized in that the regulating controller (1) further comprises: a signal amplification circuit (102);
the output end of the comparator (101) is electrically connected with the signal input end of the control valve execution unit (2) through the signal amplification circuit (102).
5. The flow control device of claim 1, further comprising: an inlet pressure sensor (5), the inlet pressure sensor (5) being disposed at an inlet of the flow regulating valve (10).
6. A flow control device according to claim 5, further comprising: an outlet pressure sensor (6), the outlet pressure sensor (6) being disposed at an outlet of the flow regulating valve (10).
7. A flow control device according to any one of claims 1 to 6 further comprising: a first mounting seat (7);
one end of the first mounting seat (7) is fixed on the outer side wall of the flow regulating valve (10), an output line of the flow sensor (3) passes through the inside of the first mounting seat (7) and is electrically connected with the adjusting controller (1), and the adjusting controller (1) is fixed on the other end of the first mounting seat (7).
8. A flow control device according to claim 7, characterised in that the first mounting seat (7) comprises a base (71) and a support cylinder (72), the base (71) is fixed on the flow control valve (10), the base (71) is provided with a mounting groove, the support cylinder (72) is embedded in the mounting groove, and the base (71) and the support cylinder (72) are arranged in a sealing manner.
9. A flow control device according to any one of claims 1 to 6 further comprising: a second mounting seat (8);
the second mounting seat (8) is arranged on the flow regulating valve (10), and the control valve execution unit (2) is arranged on the second mounting seat (8).
10. Water injection apparatus, characterized in that it comprises a flow control device according to any of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020168683.2U CN212054652U (en) | 2020-02-13 | 2020-02-13 | Flow rate control device and water injection equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020168683.2U CN212054652U (en) | 2020-02-13 | 2020-02-13 | Flow rate control device and water injection equipment |
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| CN212054652U true CN212054652U (en) | 2020-12-01 |
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| CN202020168683.2U Active CN212054652U (en) | 2020-02-13 | 2020-02-13 | Flow rate control device and water injection equipment |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508323A (en) * | 2022-01-11 | 2022-05-17 | 中海油能源发展股份有限公司 | Intelligent control device and control method for flow-back speed of fracturing fluid |
| CN114517669A (en) * | 2022-03-06 | 2022-05-20 | 大庆乾斯晨石油科技开发有限公司 | Intelligent flow control adjusting equipment based on water injection well |
-
2020
- 2020-02-13 CN CN202020168683.2U patent/CN212054652U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114508323A (en) * | 2022-01-11 | 2022-05-17 | 中海油能源发展股份有限公司 | Intelligent control device and control method for flow-back speed of fracturing fluid |
| CN114517669A (en) * | 2022-03-06 | 2022-05-20 | 大庆乾斯晨石油科技开发有限公司 | Intelligent flow control adjusting equipment based on water injection well |
| CN114517669B (en) * | 2022-03-06 | 2022-09-06 | 大庆乾斯晨石油科技开发有限公司 | Intelligent flow control adjusting equipment based on water injection well |
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