Fluid metering regulation and control equipment
By designing a fluid metering and control device with independently installed electronic chamber components and control valve components, the problems of insufficient control of fluid reinjection devices and complexity of existing devices are solved, realizing accurate fluid metering and convenient maintenance.
Patent Information
- Application Number
- CN202520451130.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-14
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-03-14
AI Technical Summary
Existing fluid reinjection devices lack control during oil and gas well development, resulting in variations in reinjection volumes across different wells or regions. This makes it difficult to achieve the goals of oil displacement and production enhancement, formation protection, and carbon emission reduction. Furthermore, existing metering devices are complex in structure, require high precision, and are difficult to produce and maintain.
A fluid metering and control device is designed, including a pipeline docking seat, a throttling device, an electronic chamber assembly, and a control valve assembly. The electronic chamber assembly is used for pressure measurement, and the control valve assembly is used for flow control. The electronic chamber assembly and the control valve assembly are independently installed on the outer wall of the pipeline docking seat, which simplifies the installation accuracy requirements of the components.
It enables the measurement and control of fluids, reduces the difficulty of production and maintenance, and improves the convenience and ease of maintenance of the equipment.
Smart Images
Figure CN223923017U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of petroleum engineering, specifically to a fluid metering and control equipment. Background Technology
[0002] During oil and gas well development, engineers employ wastewater reinjection and carbon dioxide reinjection to achieve goals such as enhanced oil recovery, formation protection, carbon emission reduction, and cost reduction and efficiency improvement. At the production site, multiple wells are typically connected to a single node via a pipeline network; during reinjection, wastewater or carbon dioxide is simultaneously delivered to each well through this node. Current technologies lack control over the reinjection process, resulting in a constant flow rate to each well. However, different wells or regions require different reinjection volumes, and traditional, uncontrolled reinjection methods are not conducive to achieving the aforementioned reinjection objectives.
[0003] The closest existing technology to this application is Chinese patent CN2021109346109, which discloses a chemical injection metering device. This device uses a series of orifice plate throttling elements and control valves to regulate and meter the flow of chemical agents through the channel. It also includes a tree trunk connection interface and electronic devices for pressure detection of the chemical agent flow channel. Because it needs to be repeatedly connected and disconnected from the corresponding interface on the subsea tree trunk, its structure requires a compact and neat appearance, with the tree trunk connection interface, control valve, and electronic devices arranged sequentially in a straight line. However, this type of injection metering device requires high precision in processing and assembly, making production difficult. Furthermore, maintenance of this type of injection metering device may require the removal of more unrelated components, hindering rapid repair. Therefore, the same technical problems exist when applying this structure to other fluid control and metering scenarios (e.g., wastewater reinjection or carbon dioxide reinjection). Utility Model Content
[0004] To achieve metering and control of fluids such as wastewater and carbon dioxide, and to further address the technical problems of existing metering devices, this utility model provides a fluid metering and control device, which includes a pipeline connection seat, a throttling element, an electronic compartment assembly, and a control valve assembly.
[0005] The pipe connection seat is provided with an upstream flow channel and a downstream flow channel, which respectively pass through the pipe connection seat. The throttling element is provided in the upstream flow channel.
[0006] The control valve assembly is configured with a valve inlet and a valve outlet, the valve inlet being connected to one end of the upstream flow channel, and the valve outlet being connected to one end of the downstream flow channel;
[0007] The electronic chamber assembly is used to detect the fluid pressure at the pressure tapping points in the upstream flow channel and / or the downstream flow channel;
[0008] The key point is that the electronic compartment assembly is fixedly disposed on the outer wall of the pipeline docking seat, and a pressure-guiding channel is provided in the pipeline docking seat, which connects the pressure measuring component of the electronic compartment assembly and the pressure tapping point.
[0009] This equipment can measure fluid pressure through an electronic chamber assembly for metering and regulate fluid flow through a control valve assembly. Furthermore, because the control valve assembly and electronic chamber assembly are independently connected to the pipeline connectors, the higher precision required when installing multiple components sequentially is avoided, reducing production complexity. Additionally, the independent disassembly and assembly of multiple components makes maintenance relatively more convenient. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the external structure of the present utility model;
[0011] Figure 2 This is a cross-sectional structural diagram of the present invention;
[0012] Figure 3 This is a cross-sectional structural diagram of the control valve assembly 400;
[0013] Figure 4 This is a schematic diagram of the three-dimensional structure of valve core 402. Detailed Implementation
[0014] The present invention will be further described below with reference to the embodiments and accompanying drawings.
[0015] like Figure 1 , 2 As shown in Figures 3 and 4, a fluid metering and control device includes a pipeline docking seat 100, a throttling device 200, an electronic chamber assembly 300, and a control valve assembly 400.
[0016] The pipe docking seat 100 is provided with an upstream flow channel 100a and a downstream flow channel 100b, which respectively pass through the pipe docking seat 100. The pipe docking seat 100 includes two opposing pipe docking surfaces. The inlet of the upstream flow channel 100a opens into one of the pipe docking surfaces, and the outlet of the downstream flow channel 100b opens into the other pipe docking surface.
[0017] The outer wall of the pipe docking seat 100 between the two pipe docking surfaces is provided with the same external side; the outlet of the upstream flow channel 100a and the inlet of the downstream flow channel 100b open on the external side.
[0018] As a preferred embodiment, the upstream flow channel 100a includes a first upstream flow channel and a second upstream flow channel; the centerline of the first upstream flow channel is perpendicular to the centerline of the second upstream flow channel, the inlet of the first upstream flow channel opens into one of the pipe mating surfaces, the inlet of the second upstream flow channel and the outlet of the first upstream flow channel are connected inside the pipe mating seat 100, and the outlet of the second upstream flow channel opens into the external side.
[0019] The downstream flow channel 100b includes a first downstream flow channel and a second downstream flow channel; the center line of the first downstream flow channel is perpendicular to the center line of the second downstream flow channel; the center line of the first upstream flow channel coincides with the center line of the second downstream flow channel; the inlet of the first downstream flow channel opens on the external side, the outlet of the first downstream flow channel is connected to the inlet of the second downstream flow channel inside the pipe docking seat 100, and the outlet of the second downstream flow channel opens on another pipe docking surface.
[0020] The two pipe mating surfaces of the pipe mating seat 100 are respectively equipped with connecting flanges 101.
[0021] The throttling device 200 is provided in the upstream flow channel 100a. Specifically, the throttling device 200 is provided in a section of the upstream flow channel. The throttling device 200 is preferably a Venturi throttling device.
[0022] The electronic chamber assembly 300 is used to detect the fluid pressure at the pressure tapping points in the upstream flow channel 100a and / or the downstream flow channel 100b. Specifically, the electronic chamber assembly 300 is fixedly disposed on the outer wall of the pipeline docking seat 100, and a pressure tapping channel is provided in the pipeline docking seat 100, which connects the pressure measuring component of the electronic chamber assembly 300 and the pressure tapping point. The regulating valve assembly 400 is located downstream of the throttling element 200. The regulating valve assembly 400 is configured with a valve inlet and a valve outlet. The valve inlet is connected to one end of the upstream flow channel 100a, and the valve outlet is connected to one end of the downstream flow channel 100b.
[0023] The pressure tapping points are locations designed by those skilled in the art, and it is common knowledge for those skilled in the art to measure the fluid by obtaining the fluid pressure at different locations, so it will not be elaborated here.
[0024] A common design scheme for pressure tapping points is as follows: a pressure tapping point is configured in the flow channel upstream of the throttling element 200; a pressure tapping point is configured in the flow channel between the throttling element 200 and the control valve assembly 400; and a pressure tapping point is configured in the flow channel downstream of the control valve assembly 400.
[0025] Furthermore, the outer wall of the pipeline docking seat 100 is provided with a pressure measuring point; the electronic compartment assembly 300 includes a pressure measuring element 301, which is fixed to the pressure measuring point; the pressure tapping channel connects the pressure measuring point and the pressure tapping point. The pressure measuring point is preferably a pressure measuring hole, and the pressure measuring element 301 is preferably a pressure sensor, which is fixed and sealed within the pressure measuring hole. The electronic compartment assembly 300 also includes a circuit board, and the pressure signal received by the pressure sensor is connected to the circuit board.
[0026] The control valve assembly 400 includes a valve body 401, which is provided with a valve core mounting hole 401a. One end of the valve core mounting hole 401a opens onto the surface of the valve body 401 to form the valve inlet. The valve body 401 is fixedly disposed on the outer wall of the pipeline docking seat 100. The valve inlet is connected to the outlet of the upstream flow channel 100a. The valve body 401 is also provided with a valve outlet, which connects the interior of the valve core mounting hole 401a and the exterior of the valve body 401. The valve outlet is connected to the inlet of the downstream flow channel 100b through a pipeline.
[0027] A valve core 402 is adapted to be installed in the valve core mounting hole 401a. The valve core 402 is cylindrical, and its outer wall is slidably engaged with the inner wall of the valve core mounting hole 401a. The valve core 402 is provided with a regulating flow channel 402a, which spirally winds along the outer wall of the valve core 402. The head of the regulating flow channel 402a faces and connects to the valve inlet. The cross-sectional area of the regulating flow channel 402a gradually decreases from its head to its tail. During the axial reciprocating movement of the valve core 402 along the valve core mounting hole 401a, any part of the regulating flow channel 402a is connected to the valve outlet.
[0028] The power for the valve core 402 to reciprocate axially along the valve core mounting hole 401a can be a motor. The output shaft of the motor is equipped with a drive bolt. The axis of the drive bolt coincides with the center line of the valve core 402. The drive bolt is threaded into the valve core 402. A guide rod is also axially inserted on the valve core 402. The guide rod is eccentrically positioned with the valve core 402 and slides axially with the valve core 402. Both ends of the guide rod are fixed.
[0029] The valve core 402 is provided with a pressure balancing through hole 402b along its axial direction, and the end of the valve core mounting hole 401a away from the valve inlet is sealed. The pressure balancing through hole 402b is used to balance the pressure in the chambers at both ends of the valve core 402, so as to avoid the valve core 402 from having difficulty moving axially due to excessive pressure at the valve inlet end.
[0030] A pressure tapping point is configured near the inlet end of the downstream flow channel 100b; a pressure-stabilizing and rectifying annular cavity 401b is provided around the valve core 402 on the inner wall of the valve core mounting hole 401a, and the valve outlet communicates with the pressure-stabilizing and rectifying annular cavity 401b. The function of the pressure-stabilizing and rectifying annular cavity 401b is to buffer, rectify, and stabilize the fluid flowing out of the control flow channel 402a, so as to avoid the instability of the flow pattern of the fluid in the inlet section of the downstream flow channel 100b, thereby facilitating pressure tapping at this pressure tapping point.
[0031] The control valve assembly 400 also includes a valve core sleeve 403, which is fixedly embedded in the valve core mounting hole 401a. The valve core sleeve 403 and the valve core mounting hole 401a are arranged along the same center line, and the inner wall of the valve core sleeve 403 and the valve core 402 are in sliding sealing fit.
[0032] The axial length of the valve core sleeve 403 is sufficient to at least cover the valve outlet; the axial length of the valve core sleeve 403 is also sufficient to at least cover the voltage-stabilizing and rectifying annular cavity 401b. That is, the axial length of the valve core sleeve 403 can simultaneously cover both the valve outlet and the voltage-stabilizing and rectifying annular cavity 401b. Furthermore, at least one venting hole 403a is distributed on the valve core sleeve 403, and this venting hole 403a communicates with the voltage-stabilizing and rectifying annular cavity 401b. Preferably, there are three or four venting holes 403a. The valve core sleeve 403 and the valve core 402 cooperate to ensure that the fluid flowing out of the regulating flow channel 402a can only flow out through the venting holes 403a on the valve core sleeve 403, which is more conducive to fluid regulation.
[0033] To prevent high-speed fluid from impacting the inlet end of the regulating flow channel 402a and the valve core 402, a buffer flow stabilizing element 500 is provided at the connection between the valve inlet and the upstream flow channel 100a. The buffer flow stabilizing element 500 includes a buffer pad with flow stabilizing holes distributed on it, which connect the valve inlet and the upstream flow channel 100a.
[0034] In the above structure, it is common knowledge for those skilled in the art to configure the necessary connection structure, reinforcement structure, and sealing structure at the corresponding connection parts, and will not be elaborated here.
[0035] Beneficial effects: The technical solution of this utility model can simultaneously meter and regulate fluids such as wastewater and carbon dioxide. Moreover, the processing accuracy and assembly accuracy requirements of the metering and regulation structure are relatively low, the production difficulty and disassembly difficulty are relatively lower, and maintenance is relatively more convenient and faster.
[0036] Finally, it should be noted that the above description is merely a preferred embodiment of the present utility model. Those skilled in the art, under the guidance of the present utility model, can make various similar representations without departing from the spirit and claims of the present utility model, and such modifications all fall within the protection scope of the present utility model.
Claims
1. A fluid metering and regulating device, comprising a pipeline docking seat (100), a throttling element (200), an electronic warehouse assembly (300) and a regulating valve assembly (400); the pipeline docking seat (100) is provided with an upstream flow passage (100a) and a downstream flow passage (100b), the upstream flow passage (100a) and the downstream flow passage (100b) penetrate through the pipeline docking seat (100) respectively, and the upstream flow passage (100a) is provided with the throttling element (200); the regulating valve assembly (400) is provided with a valve inlet and a valve outlet, the valve inlet is communicated with one end of the upstream flow passage (100a), and the valve outlet is communicated with one end of the downstream flow passage (100b); the electronic warehouse assembly (300) is used for detecting the fluid pressure of a pressure taking point in the upstream flow passage (100a) and / or the downstream flow passage (100b); characterized in that the electronic warehouse assembly (300) is fixedly arranged on the outer wall of the pipeline docking seat (100), and a pressure introduction flow passage is arranged in the pipeline docking seat (100), which is communicated with the pressure measuring part of the electronic warehouse assembly (300) and the pressure taking point.
2. The fluid metering regulatory device of claim 1, wherein: The outer wall of the pipeline docking seat (100) is provided with a pressure measuring point; the electronic warehouse assembly (300) comprises a pressure measuring element (301), and the pressure measuring element (301) is fixed to the pressure measuring point; the pressure introduction flow passage is communicated with the pressure measuring point and the pressure taking point.
3. Fluid metering regulatory device according to claim 1 or 2, characterized in that: The connecting part of the valve inlet and the upstream flow passage (100a) is provided with a buffer and flow stabilizing element (500).
4. The fluid metering regulatory device of claim 3, wherein: The buffer and flow stabilizing element (500) comprises a buffer pad, and flow stabilizing through holes are distributed on the buffer pad, which are communicated with the valve inlet and the upstream flow passage (100a).
5. The fluid metering device of claim 1 or 2, wherein: The pipeline docking seat (100) comprises two opposite pipeline docking surfaces, the inlet of the upstream flow passage (100a) is opened to one of the pipeline docking surfaces, and the outlet of the downstream flow passage (100b) is opened to the other pipeline docking surface.
6. The fluid metering regulatory device of claim 5, wherein: The outer wall of the pipeline docking seat (100) between the two pipeline docking surfaces is provided with a same external side surface; the outlet of the upstream flow passage (100a) and the inlet of the downstream flow passage (100b) are opened to the external side surface.
7. The fluid metering device of claim 1 or 2, wherein: The regulating valve assembly (400) comprises a valve body (401), which is provided with a valve core mounting hole (401a), one end of the valve core mounting hole (401a) is opened to the surface of the valve body (401) to form the valve inlet; the valve body (401) is fixedly arranged on the outer wall of the pipeline docking seat (100), and the valve inlet is communicated with the outlet of the upstream flow passage (100a); the valve body (401) is further provided with the valve outlet, the valve outlet is communicated with the inside of the valve core mounting hole (401a) and the outside of the valve body (401), and the valve outlet and the inlet of the downstream flow passage (100b) are communicated through a pipeline. A valve core (402) is fitted in the valve core mounting hole (401a), the outer wall of the valve core (402) is in sliding fit with the inner wall of the valve core mounting hole (401a), the valve core (402) is provided with a regulating flow channel (402a) which is spirally wound along the outer wall of the valve core (402), the head of the regulating flow channel (402a) faces and communicates with the valve inlet, the cross-sectional area of the regulating flow channel (402a) gradually decreases from the head to the tail, and any part of the regulating flow channel (402a) communicates with the valve outlet during the axial reciprocating movement of the valve core (402) in the valve core mounting hole (401a).
8. The fluid metering regulatory device of claim 7, wherein: A pressure balance through hole (402b) is arranged on the valve core (402) in the axial direction, and the end of the valve core mounting hole (401a) away from the valve inlet is sealed.
9. Fluid metering regulatory device according to claim 7 or 8, characterized in that: A pressure taking point is arranged near the inlet end of the downstream flow channel (100b). The inner wall of the valve core mounting hole (401a) is provided with a stable pressure rectification annular cavity (401b) around the valve core (402), and the valve outlet communicates with the stable pressure rectification annular cavity (401b).
10. The fluid metering regulatory device of claim 9, wherein: The regulating valve assembly (400) further comprises a valve core sleeve (403) which is fixedly embedded in the valve core mounting hole (401a), the valve core sleeve (403) is coaxially arranged with the valve core mounting hole (401a), and the inner wall of the valve core sleeve (403) is in sliding sealing fit with the valve core (402). The axial length of the valve core sleeve (403) can at least shield the valve outlet. The axial length of the valve core sleeve (403) can at least shield the stable pressure rectification annular cavity (401b). At least one leakage through hole (403a) is distributed on the valve core sleeve (403), and the leakage through hole (403a) communicates with the stable pressure rectification annular cavity (401b).
11. The fluid metering regulatory device of claims 1, 2, 7, or 8, wherein: The throttling element (200) is a Venturi throttling element.
12. The fluid metering regulatory device of claim 6, wherein: The upstream flow channel (100a) comprises a first upstream flow channel and a second upstream flow channel. The inlet of the first upstream flow channel is opened on one of the pipeline abutting faces, the inlet of the second upstream flow channel communicates with the outlet of the first upstream flow channel inside the pipeline abutting seat (100), and the outlet of the second upstream flow channel is opened on the external side face.
13. The fluid metering regulatory device of claim 6, wherein: The downstream flow channel (100b) comprises a first downstream flow channel and a second downstream flow channel. The inlet of the first downstream flow channel is opened on the external side face, the outlet of the first downstream flow channel communicates with the inlet of the second downstream flow channel inside the pipeline abutting seat (100), and the outlet of the second downstream flow channel is opened on the other pipeline abutting face.
14. The fluid metering device of claim 5 or 6, wherein: The pipeline abutting face of the pipeline abutting seat (100) is provided with a connecting flange (101).