Integrated meter for alternating water and gas injection

Abstract

The utility model relates to the technical field of oilfield equipment, in particular to an integrated meter for alternating water and gas injection, comprising a monitoring instrument body, wherein the output end of the monitoring instrument body is connected to a discharge joint, the input end of the monitoring instrument body is connected to a three-way joint, and further comprises: an air intake check valve, an air intake electric gate valve and an air intake joint which are sequentially connected and arranged at one end of the three-way joint; a liquid inlet check valve, a liquid inlet electric gate valve and a liquid inlet joint which are sequentially connected and arranged at the other end of the three-way joint; a filtering mechanism which is connected and arranged between the liquid inlet electric gate valve and the liquid inlet joint; the filtering mechanism can effectively intercept and remove impurities such as mud, rust and the like in the injected water, and prevent these impurities from entering the monitoring instrument body, and the scraping mechanism can timely clean the impurities adhered to the filter screen and the inner wall of the filter cylinder, maintain the cleanliness of the filter screen and the smoothness of the filter cylinder, thereby continuously ensuring the efficient filtering effect of the filtering mechanism.

Description

Technical Field

[0001] The utility model relates to the technical field of oil field equipment, in particular to an integrated metering instrument for alternate water and gas injection. Background Art

[0002] In the energy field such as oil and natural gas extraction, water-gas alternating injection technology is a key technical means to improve recovery and optimize energy development effects. In the early oilfield wellhead injection link, the gas phase and liquid phase pipeline separation, metering and injection mode were generally adopted. This traditional method requires laying independent pipelines for gas and liquid phases and configuring special metering equipment, which leads to complex pipeline facilities, large space occupation, and high construction costs. In addition, the metering injection of gas and liquid phases operates independently and is difficult to coordinate and control. The adjustment of the water-gas injection ratio and rate is cumbersome, and the accuracy is limited, which cannot meet the needs of modern and efficient mining. In addition, the existing monitoring instruments generally lack an effective impurity treatment mechanism, and the injected water often contains various impurities such as silt, rust, etc. If the impurities directly enter the monitor, it is very easy to wear and corrode the precision parts inside the instrument, seriously affecting the measurement accuracy and service life of the monitor, and ultimately leading to increased maintenance costs and equipment replacement frequency. In view of the above problems, the existing technology needs to be improved urgently. Utility Model Content

[0003] The utility model aims to solve the shortcomings in the prior art and proposes a water-gas alternate injection integrated metering instrument.

[0004] To achieve the above purpose, the technical solution adopted by the present invention is: a water-gas alternating injection integrated meter, comprising a monitor body, the output end of the monitor body is connected to a discharge joint, the input end of the monitor body is connected to a three-way joint, and further comprising:

[0005] The air intake check valve, the air intake electric gate valve and the air intake joint arranged at one end of the three-way joint are connected in sequence;

[0006] The liquid inlet check valve, the liquid inlet electric gate valve and the liquid inlet joint arranged at the other end of the three-way joint are connected in sequence;

[0007] The filter mechanism is connected and arranged between the liquid inlet electric gate valve and the liquid inlet joint. The filter mechanism includes a filter cylinder, a filter frame arranged in the filter cylinder, and a filter screen stretched on the filter frame. The bottom of the filter cylinder is connected and arranged with an impurity collection component. The filter mechanism also includes a scraping mechanism rotatably arranged in the filter cylinder. The scraping mechanism includes a horizontal axis rotatably connected to the center of the filter frame and a driving component for driving the horizontal axis to rotate. The end of the horizontal axis is fixedly connected to a fixing frame, and the fixing frame is fixedly connected to scraper 1 and scraper 2.

[0008] Preferably, the filter frame is an annular frame, and the filter mesh is made of metal.

[0009] Preferably, the scraper 1 is an elastic scraper, and the scraping end of the elastic scraper is arranged to fit the surface of the filter screen.

[0010] Preferably, the scraper blade 2 is an elastic scraper blade, and the scraping end of the elastic scraper blade is arranged in contact with the inner wall of the filter cylinder.

[0011] Preferably, the impurity collection assembly includes an impurity collection hopper, the impurity collection hopper is fixedly connected to the bottom of the filter cylinder, and a drain valve for discharging impurities is provided at the bottom of the impurity collection hopper.

[0012] Preferably, the impurity collecting bucket is a conical bucket, the bucket mouth of the conical bucket is connected to the bottom of the filter cylinder, and the bucket bottom of the conical bucket is connected to the drain valve.

[0013] Preferably, the drain valve is a manual drain valve.

[0014] Preferably, the driving assembly comprises:

[0015] A motor is fixedly mounted on the surface of the filter cylinder, and an output shaft end of the motor passes through the inside of the filter cylinder and is fixedly connected to a worm;

[0016] A worm wheel is fixedly connected to the end of the horizontal shaft, and a rim of the worm wheel is meshed with the worm.

[0017] Preferably, the liquid outlet end of the liquid inlet check valve and the air outlet end of the air inlet check valve are both connected to the fluid input end of the three-way joint, and the fluid output end of the three-way joint is connected to the fluid input end of the monitor body.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] The utility model provides an integrated meter for alternating water and gas injection. Compared with the method of separate metering and separate injection of gas and liquid pipelines in the prior art, the technical solution innovatively sets a filtering mechanism for filtering impurities in the injected water. Through the filtering mechanism, impurities such as mud, rust, etc. in the injected water can be effectively intercepted and removed to prevent these impurities from entering the monitor body, thereby significantly reducing the wear and corrosion of the precision parts inside the monitor body by impurities, ensuring the long-term stable measurement accuracy of the monitor, extending the service life of the monitor, and effectively reducing the maintenance cost and equipment replacement frequency.

[0020] In addition, the utility model also innovatively arranges a scraping mechanism in the filtering mechanism, which can promptly clean the impurities adhered to the filter net and the inner wall of the filter cylinder, maintain the cleanliness of the filter net and the smoothness of the filter cylinder, thereby continuously ensuring the efficient filtering effect of the filtering mechanism, further improving the stability and reliability of the operation of the integrated water-gas alternating injection meter, and meeting the urgent needs of modern oil field efficient exploitation for water-gas injection monitoring equipment. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0022] Figure 2 It is a structural schematic diagram of the filtering mechanism in the utility model;

[0023] Figure 3 It is a cross-sectional view of the filter mechanism in the utility model;

[0024] Figure 4 It is a structural schematic diagram of the fixing frame in the utility model;

[0025] Figure 5 It is a structural schematic diagram of the filter frame in the utility model.

[0026] In the figure: 1. discharge connector; 2. monitor body; 3. air inlet check valve; 4. air inlet connector; 5. air inlet electric gate valve; 6. liquid inlet electric gate valve; 7. filter mechanism; 701. filter cylinder; 702. impurity collection bucket; 703. drain valve; 704. filter frame; 705. filter screen; 8. liquid inlet connector; 9. liquid inlet check valve; 10. three-way connector; 11. horizontal axis; 12. fixing frame; 13. scraper 1; 14. scraper 2; 15. worm gear; 16. worm; 17. motor. DETAILED DESCRIPTION

[0027] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0028] like Figures 1 to 5 The water-gas alternating injection integrated meter shown includes a monitor body 2, an output end of the monitor body 2 is connected to a discharge connector 1, an input end of the monitor body 2 is connected to a three-way connector 10, and further includes:

[0029] The air intake check valve 3, the air intake electric gate valve 5 and the air intake connector 4 arranged at one end of the three-way connector 10 are connected in sequence;

[0030] The liquid inlet check valve 9, the liquid inlet electric gate valve 6 and the liquid inlet connector 8 arranged at the other end of the three-way connector 10 are connected in sequence;

[0031] The filter mechanism 7 is connected and arranged between the liquid inlet electric gate valve 6 and the liquid inlet joint 8. The filter mechanism 7 includes a filter cylinder 701, a filter frame 704 arranged in the filter cylinder 701, and a filter screen 705 tensioned on the filter frame 704. The bottom of the filter cylinder 701 is connected and arranged with an impurity collection component. The filter mechanism 7 also includes a scraping mechanism rotatably arranged in the filter cylinder 701. The scraping mechanism includes a horizontal axis 11 rotatably connected to the center of the filter frame 704 and a driving component for driving the horizontal axis 11 to rotate. The end of the horizontal axis 11 is fixedly connected to a fixing frame 12, and the fixing frame 12 is fixedly connected to a scraper 13 and a scraper 2 14.

[0032] During operation, when monitoring the water-gas phase, water enters the filter cylinder 701 through the liquid inlet joint 8. After the water entering the filter cylinder 701 is filtered by the filter net 705, it passes through the liquid inlet electric gate valve 6, the liquid inlet check valve 9, and the three-way joint 10 in turn to flow to the monitor body 2. The liquid inlet electric gate valve 6 can control the flow rate, and the monitor body 2 detects the water. Finally, the water is discharged through the discharge joint 1. The gas enters through the air inlet joint 4 and passes through the air inlet electric gate valve 5, the air inlet check valve 3 and the three-way joint 10 in turn to flow to the monitor body 2. The air inlet electric gate valve 5 can control the flow rate, and the gas is detected by the monitor body 2. Finally, the gas is discharged through the discharge joint 1. By controlling the alternating injection of water and gas and identifying whether the medium is in the gas phase or the liquid phase by the monitor body 2, the real The key parameters such as pressure, flow rate, temperature, etc. during the injection process are monitored in real time to achieve accurate metering. The integrated monitoring of gas and liquid phases can be used to simplify the oil field production process, reduce costs, and meet the needs of modern mining. As the filtering mechanism 7 filters the water, impurities will adhere to one side of the filter 705 after long-term use. Excessive adhesion of impurities will easily affect the filtering effect of the filter 705. Therefore, the driving component drives the horizontal axis 11 to rotate the fixed frame 12, and the fixed frame 12 drives the scraper 1 13 and the scraper 2 14 to rotate synchronously. The impurities adhered to one side of the filter 705 are scraped off by the scraper 13, and the impurities adhered to the inner wall of the filter cylinder 701 are scraped off by the scraper 2 14. The impurities that fall are collected in the impurity collection component under the action of their own gravity.

[0033] As an implementation mode of the present utility model, the filter frame 704 is an annular frame, and the filter screen 705 is made of metal.

[0034] When working, the filter frame 704 is designed to be an annular structure. This annular design simplifies the structure of the filter frame 704, makes it easy to manufacture and install, and reduces production costs. The annular filter frame 704 can effectively support the filter screen 705, ensuring that the filter screen 705 maintains a stable filtering shape under fluid pressure to avoid deformation or damage. The filter screen 705 is made of metal material. Compared with traditional fiber or plastic filter screens, the metal filter screen 705 has higher strength and durability, and can withstand higher fluid pressure and more severe working environment. Metal materials usually also have good corrosion resistance, can resist the erosion of chemical substances in water, and extend the service life of the filter screen 705.

[0035] As an implementation mode of the utility model, the scraper 13 is an elastic scraper, and the scraping end of the elastic scraper is arranged to fit the surface of the filter screen 705.

[0036] When working, the scraper 13 is specially designed as an elastic scraper, which means that the material of the scraper 13 has a certain elasticity, so that it can be deformed during the working process. The scraping end of the elastic scraper, that is, the edge portion that directly contacts the filter 705 to scrape the impurities, is set to fit closely with the surface of the filter 705. This fit is not a simple contact, but means that during the scraping process, the elastic scraper can automatically adjust the shape of the scraping end according to the slight undulations or unevenness of the surface of the filter 705, and always maintain effective contact with the surface of the filter 705. Therefore, the design of the elastic scraper maximizes the contact area between the scraping end of the scraper 13 and the filter 705 during the scraping process, ensuring the thoroughness and uniformity of the scraping. Even if there are slight impurities accumulated or local deformation on the surface of the filter 705, the elastic scraper can fit closely and effectively scrape off the impurities adhering to the surface of the filter 705, thereby significantly improving the cleaning efficiency of the scraping mechanism and the regeneration capacity of the filter 705, and further ensuring the long-term stable operation of the filter mechanism 7.

[0037] As an implementation mode of the present utility model, the scraper 14 is an elastic scraper, and the scraping end of the elastic scraper is arranged to fit the inner wall of the filter cylinder 701.

[0038] When working, the scraper 2 14 is also designed as an elastic scraper. Similar to the scraper 1 13, the scraper 2 14 is also made of elastic material, so that it can produce elastic deformation when working. The main function of the scraper 2 14 is to clean the inner wall of the filter cylinder 701 and prevent impurities from accumulating on the inner wall. In order to achieve this function, the scraping end of the scraper 2 14 is configured to fit tightly with the inner wall of the filter cylinder 701. This fit ensures that during the scraping process, the scraper 2 14 can effectively scrape off the impurities attached to the inner wall of the filter cylinder 701, avoiding the accumulation of impurities on the inner wall of the cylinder and affecting the normal operation of the filter mechanism 7.

[0039] As an embodiment of the present invention, the impurity collection assembly includes an impurity collection bucket 702, which is fixedly connected to the bottom of the filter cylinder 701, and a drain valve 703 for discharging impurities is provided at the bottom of the impurity collection bucket 702.

[0040] As an implementation mode of the present utility model, the impurity collecting bucket 702 is a conical bucket, the bucket mouth of the conical bucket is connected to the bottom of the filter cylinder 701, and the bucket bottom of the conical bucket is connected to the drain valve 703.

[0041] As an implementation mode of the present utility model, the drain valve 703 is a manual drain valve.

[0042] When working, the impurity collecting bucket 702 is designed to be a conical structure, and the upper opening of the conical bucket, i.e., the bucket mouth, is connected to the bottom of the filter cylinder 701, so that the impurities scraped from the inner wall of the filter cylinder 701 and the filter screen 705 can smoothly enter the impurity collecting bucket 702. The lower end of the conical bucket, i.e., the bottom of the bucket, is connected to the drain valve 703, which is used to control the discharge of impurities. The design of the conical bucket is based on the principle of gravity sedimentation. The contraction characteristics of the conical structure are used to guide the impurities to concentrate at the bottom of the conical bucket under the action of gravity, so as to facilitate the subsequent discharge of the accumulated impurities through the drain valve 703. The drain valve 703 is set as a manually controlled valve, which means that the opening and closing operations of the drain valve 703 need to be performed manually rather than driven by automation. The manual drain valve is usually simple in structure and mainly consists of components such as a valve body, a valve stem, a valve disc, and a handle. The operator turns the handle to drive the valve stem and valve disc to open or close the valve and control the discharge of impurities. There are various types of manual drain valves, such as manual ball valves, manual stop valves or manual gate valves. These valves have the advantages of compact structure, simple operation, low cost and convenient maintenance. In actual application, the operator can manually open the drain valve 703 regularly according to the accumulation of impurities in the impurity collection bucket 702 to discharge the collected impurities. The operation process is intuitive and easy to master.

[0043] Therefore, by selecting the manual drain valve as the impurity discharge control component, the manufacturing cost and subsequent maintenance cost of the water-gas alternating injection integrated metering instrument are effectively reduced while meeting the impurity discharge functional requirements. The simple operation of the manual drain valve also reduces the difficulty of operation, making equipment maintenance more convenient, especially suitable for application scenarios that do not require a high degree of automation but have high requirements for equipment economy and reliability.

[0044] As an implementation mode of the utility model, the driving assembly includes:

[0045] The motor 17 is fixedly mounted on the surface of the filter cylinder 701, and the output shaft end of the motor 17 passes through the inside of the filter cylinder 701 and is fixedly connected to the worm 16;

[0046] The worm wheel 15 is fixedly connected to the end of the transverse shaft 11 , and the rim of the worm wheel 15 is meshed with the worm 16 .

[0047] During operation, when the motor 17 is started, its output shaft drives the worm 16 to rotate at high speed. Since the worm 16 is meshed with the rim of the worm wheel 15, the rotational motion of the worm 16 is converted into the low-speed rotational motion of the worm wheel 15, achieving the effect of reducing speed and increasing torque. The rotation of the worm wheel 15 then drives the horizontal shaft 11 fixedly connected thereto to rotate, and finally the rotation of the horizontal shaft 11 drives the fixed frame 12 and the scraper 1 13 and the scraper 2 14 to rotate synchronously, completing the scraping action.

[0048] As an implementation mode of the present utility model, the monitoring instrument body 2 is a mass flow meter.

[0049] As an embodiment of the present invention, the liquid outlet of the liquid inlet check valve 9 and the gas outlet of the gas inlet check valve 3 are both connected to the fluid input end of the three-way joint 10, and the fluid output end of the three-way joint 10 is connected to the fluid input end of the monitor body 2; the three-way joint 10 plays a key role in fluid collection and guidance in the present invention, and the liquid outlet of the liquid inlet check valve 9 from the liquid inlet pipeline and the gas outlet of the gas inlet check valve 3 from the gas inlet pipeline are both connected to the fluid input end of the three-way joint 10, which means that the liquid and gas phase fluids first converge at the three-way joint 10 before entering the monitor body 2. Subsequently, the mixed fluid after the convergence is guided to the fluid input end of the monitor body 2 through the fluid output end of the three-way joint 10, and finally enters the monitor body 2 for subsequent monitoring and metering. As a common pipeline connector, the three-way joint 10 can adopt a variety of connection methods to adapt to different pipeline materials and installation requirements.

[0050] Therefore, by cleverly setting the three-way connector 10, the two fluids of the liquid and gas inlet are effectively collected before entering the monitor body 2, simplifying the pipeline connection, making the structure of the entire water-gas alternating injection integrated meter more compact, and the pipeline layout clearer, which is not only convenient for installation and maintenance, but also saves installation space and improves the integration and reliability of the system.

[0051] Working principle of this utility model:

[0052] When monitoring the water-gas phase, water enters the filter cylinder 701 through the liquid inlet joint 8. After the water entering the filter cylinder 701 is filtered by the filter net 705, it passes through the liquid inlet electric gate valve 6, the liquid inlet check valve 9, and the three-way joint 10 in turn to flow to the monitor body 2. The liquid inlet electric gate valve 6 can control the flow rate, and the monitor body 2 detects the water. Finally, the water is discharged through the discharge joint 1. The gas enters through the air inlet joint 4 and passes through the air inlet electric gate valve 5, the air inlet check valve 3 and the three-way joint 10 in turn to flow to the monitor body 2. The air inlet electric gate valve 5 can control the flow rate, and the gas is detected by the monitor body 2. Finally, the gas is discharged through the discharge joint 1. By controlling the alternating injection of water and gas and identifying whether the medium is in the gas phase or liquid phase by the monitor body 2, the key parameters such as pressure, flow rate, and temperature during the injection process are monitored in real time, thereby achieving precise control. Accurate metering, through the integrated monitoring of gas phase and liquid phase, simplifies the oil field production process, reduces costs, and meets the needs of modern mining. As the filtering mechanism 7 filters the water, impurities will adhere to one side of the filter screen 705 after long-term use. Excessive impurities will easily affect the filtering effect of the filter screen 705. Therefore, the motor 17 drives the worm gear 15 to rotate, the worm gear 15 drives the horizontal axis 11 to rotate the fixing frame 12, and the fixing frame 12 drives the scraper 13 and the scraper 2 14 to rotate synchronously. The impurities adhered to one side of the filter screen 705 are scraped off by the scraper 13, and the impurities adhered to the inner wall of the filter cylinder 701 are scraped off by the scraper 2 14. The fallen impurities are collected in the impurity collection bucket 702 under the action of their own gravity. When the impurities in the impurity collection bucket 702 need to be discharged, the drain valve 703 is opened to discharge the impurities.

[0053] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. A water-gas alternating injection integrated meter, comprising a monitor body (2), wherein the output end of the monitor body (2) is connected to a discharge joint (1), and the input end of the monitor body (2) is connected to a three-way joint (10), characterized in that: Also includes: The air intake check valve (3), the air intake electric gate valve (5) and the air intake connector (4) arranged at one end of the three-way connector (10) are sequentially connected; The liquid inlet check valve (9), the liquid inlet electric gate valve (6) and the liquid inlet connector (8) arranged at the other end of the three-way connector (10) are sequentially connected; A filter mechanism (7) is arranged between the liquid inlet electric gate valve (6) and the liquid inlet joint (8), the filter mechanism (7) comprising a filter cylinder (701), a filter frame (704) arranged in the filter cylinder (701), and a filter screen (705) tensioned on the filter frame (704), the bottom of the filter cylinder (701) being arranged in communication with an impurity collection assembly, the filter mechanism (7) further comprising a scraping mechanism rotatably arranged in the filter cylinder (701), the scraping mechanism comprising a transverse axis (11) rotatably connected to the center of the filter frame (704) and a driving assembly driving the transverse axis (11) to rotate, the end of the transverse axis (11) being fixedly connected to a fixing frame (12), and the fixing frame (12) being fixedly connected to a scraper plate 1 (13) and a scraper plate 2 (14).

2. The water-gas alternating injection integrated meter according to claim 1, characterized in that: The filter frame (704) is an annular frame, and the filter screen (705) is made of metal.

3. The water-gas alternating injection integrated meter according to claim 1, characterized in that: The scraper 1 (13) is an elastic scraper, and the scraping end of the elastic scraper is arranged to fit the surface of the filter screen (705).

4. The water-gas alternating injection integrated meter according to claim 1, characterized in that: The scraper plate 2 (14) is an elastic scraper plate, and the scraping end of the elastic scraper plate is arranged to fit the inner wall of the filter cylinder (701).

5. The water-gas alternating injection integrated meter according to claim 1, characterized in that: The impurity collection component comprises an impurity collection hopper (702), the impurity collection hopper (702) being fixedly connected to the bottom of the filter cylinder (701), and a drain valve (703) for discharging impurities is provided at the bottom of the impurity collection hopper (702).

6. The water-gas alternating injection integrated meter according to claim 5, characterized in that: The impurity collecting bucket (702) is a conical bucket, the bucket mouth of the conical bucket is connected to the bottom of the filter cylinder (701), and the bucket bottom of the conical bucket is connected to the sewage valve (703).

7. The water-gas alternating injection integrated meter according to claim 5, characterized in that: The drain valve (703) is a manual drain valve.

8. The water-gas alternating injection integrated meter according to claim 1, characterized in that: The drive assembly comprises: A motor (17) is fixedly mounted on the surface of the filter cylinder (701), and an output shaft end of the motor (17) passes through the interior of the filter cylinder (701) and is fixedly connected to a worm (16); A worm wheel (15) is fixedly connected to the end of the transverse shaft (11), and a wheel rim of the worm wheel (15) is meshed with the worm (16).

9. The water-gas alternating injection integrated meter according to claim 1, characterized in that: The liquid outlet end of the liquid inlet check valve (9) and the air outlet end of the air inlet check valve (3) are both in communication with the fluid input end of the three-way connector (10), and the fluid output end of the three-way connector (10) is in communication with the fluid input end of the monitor body (2).

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