A large-diameter flow meter

Abstract

This utility model discloses a large-diameter flow meter, relating to the field of flow meter technology. It includes a flow meter body and a controller. Elastic sealing gaskets are provided on both sides of the flow meter body. Annular grooves are formed on the end faces of the tubes on both sides of the flow meter body. A through hole communicating with the annular groove is formed on the top of the tube of the flow meter body, and an air inlet pipe is fixed to the outside of the through hole. This utility model includes an annular groove, an electronic pressure gauge, a first solenoid valve, a second solenoid valve, a gas flow meter, and a booster pump. The controller controls the booster pump to pump gas into the annular groove. When the amount of air flowing in the gas flow meter reaches a set value, the controller controls the booster pump, the first solenoid valve, and the second solenoid valve to close. When the air pressure detected by the electronic pressure gauge exceeds a set warning value, it indicates that the deformation of the elastic sealing gasket is poor, indicating that the sealing gasket has aged and needs to be replaced. This flow meter can promptly detect whether the sealing structure is aging.

Description

Technical Field

[0001] This utility model relates to the field of flow meter technology, specifically a large-diameter flow meter. Background Technology

[0002] Large-diameter flow meters are instruments designed to measure the flow rate of fluids (such as water, oil, and gas) in large pipelines. These flow meters are typically used for monitoring large-volume fluid transport in industrial processes, such as in the petroleum, chemical, water supply, energy, and environmental protection industries. Large-diameter flow meters are characterized by high accuracy, strong stability, and wide applicability, meeting the measurement needs of different fluid characteristics and operating conditions.

[0003] Chinese utility model patent CN222124444U discloses a large-diameter flow meter, including a flow meter body and filter mechanisms movably disposed at its left and right ends. This solves the problem that some large-diameter flow meters are inconvenient for filtering impurities in the fluid during fluid measurement. Impurities in the fluid, such as solid particles, bubbles, and fibers, may interfere with the normal operation of the flow meter, causing the measurement results to deviate from the true value. Furthermore, unfiltered impurities may wear down sensitive internal components of the flow meter, such as turbines, orifice plates, and electrodes of electromagnetic flow meters, shortening the equipment's lifespan and increasing maintenance and replacement costs.

[0004] Existing large-diameter flow meters still have certain defects in actual use. For example, when large-diameter flow meters are connected to pipelines, they are connected end to end. In order to improve the sealing performance, they are equipped with elastic sealing structures. During use, it is difficult for staff to inspect the sealing structure. When the sealing structure ages and staff cannot deal with it in time, it is easy to cause flow leakage. Utility Model Content

[0005] The purpose of this invention is to provide a large-diameter flow meter to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a large-diameter flow meter, comprising a flow meter body and a controller, wherein elastic sealing gaskets are provided on both sides of the flow meter body, and annular grooves are provided on the end faces of the tubes on both sides of the flow meter body, and a through hole communicating with the annular groove is provided on the top of the tube of the flow meter body, and an air inlet pipe is fixed on the outside of the through hole, and an electronic pressure gauge, a first solenoid valve and a gas flow meter are respectively connected to the tube of the air inlet pipe.

[0007] Preferably, the inner walls of both sides of the flow meter body are provided with guide grooves, and a number of guide blocks are fixed on one side of the elastic sealing gasket, with the guide blocks matching the guide grooves.

[0008] Preferably, one side of the elastic sealing gasket is integrally formed with an inner gasket, which fits into the tube body of the flow meter body.

[0009] Preferably, a filter assembly is provided on the inner side of the inner pad on the inlet side of the flow meter body, along the flow direction of the fluid.

[0010] Preferably, the filter element includes a perforated support frame fixed to the inner wall of the inner pad, a support rod fixed to one side of the perforated support frame, and a frustum-shaped filter screen fixed between the support rod and the perforated support frame.

[0011] Preferably, an exhaust pipe is fixedly connected to the air intake pipe located between the first solenoid valve and the electronic pressure gauge, and a second solenoid valve is connected to the body of the exhaust pipe.

[0012] A booster pump is also connected to the intake pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This large-diameter flow meter is equipped with an annular groove, an electronic pressure gauge, a first solenoid valve, a second solenoid valve, a gas flow meter, and a booster pump. The controller controls the booster pump to pump gas into the annular groove. When the amount of air flowing through the gas flow meter reaches the set value, the controller controls the booster pump, the first solenoid valve, and the second solenoid valve to close. When the air pressure detected by the electronic pressure gauge is greater than the set warning value, it indicates that the deformation of the elastic sealing gasket is poor, indicating that the sealing gasket has aged and needs to be replaced. This flow meter can detect whether the sealing structure is aging in a timely manner, thus preventing fluid leakage.

[0015] Meanwhile, a filter assembly is provided, which is located on the inlet side of the flow meter body. After the fluid enters the flow meter body, it filters impurities in the fluid through the filter screen, thereby improving the service life of the flow meter body. Attached Figure Description

[0016] Figure 1 This is the left-side axial view of the present invention;

[0017] Figure 2 This is an exploded view of the elastic sealing gasket and the flow meter body of this utility model;

[0018] Figure 3 This is a cross-sectional view of the flow meter body of this utility model;

[0019] Figure 4 This is a cross-sectional view of the elastic sealing gasket of this utility model;

[0020] Figure 5 This is an axial view of the first embodiment of the present utility model;

[0021] Figure 6This is an axial view of the second embodiment of the present invention.

[0022] In the diagram: 1. Flow meter body; 101. Guide groove; 2. Elastic sealing gasket; 201. Inner gasket; 202. Guide block; 3. Filter assembly; 301. Hollow support frame; 302. Support rod; 303. Filter screen; 401. Annular groove; 402. Inlet pipe; 403. Electronic pressure gauge; 404. First solenoid valve; 405. Exhaust pipe; 406. Second solenoid valve; 407. Gas flow meter; 408. Booster pump. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] The large-diameter flow meter in this application is used to measure the volume of liquid fluid.

[0025] Example 1: As Figures 1-3As shown, this utility model provides a technical solution: a large-diameter flow meter, including a flow meter body 1 and a controller. Elastic sealing gaskets 2 made of rubber material are provided on both sides of the flow meter body 1. To facilitate the installation of the elastic sealing gaskets 2, several circumferentially arrayed guide grooves 101 are formed on the inner wall of the pipes on both sides of the flow meter body 1. Several guide blocks 202 are fixed on one side of the elastic sealing gaskets 2. During installation, the guide blocks 202 are inserted into the guide grooves 101. The guide grooves 101 can be dovetail grooves, and the corresponding guide blocks 202 are dovetail blocks. After the main body 1 is installed with the pipeline, the side of the elastic sealing gasket 2 fits against the end face of the tube body of the flowmeter main body 1 and the end face of the pipeline. Annular grooves 401 are provided on the end faces of both tube bodies of the flowmeter main body 1. A through hole communicating with the annular grooves 401 is provided on the top of the tube body of the flowmeter main body 1. An air inlet pipe 402 is fixed to the outside of the through hole. An electronic pressure gauge 403, a first solenoid valve 404, and a gas flow meter 407 are respectively connected to the tube body of the air inlet pipe 402. The electronic pressure gauge 403, the first solenoid valve 404, and the gas flow meter 407 are all electrically connected to the controller. Due to the elastic... After the elastic sealing gasket 2 deforms, the air pressure in the transverse annular groove 401 will decrease. Compared to a new elastic sealing gasket 2, the deformation of the aged elastic sealing gasket 2 will decrease. Thus, a pressure test is performed periodically (e.g., every 10 days). Gas is pumped into the air inlet pipe 402 through an air pump, and the gas enters the annular groove 401 through the through hole. When the amount of air flowing through the gas flow meter 407 reaches the set value, the controller controls the air pump and the first solenoid valve 404 to close. After a period of time (e.g., 1 minute), when the electronic pressure gauge 403 detects that the air pressure in the annular groove 401 is greater than the warning value... If the deformation of the elastic sealing gasket 2 is poor, it indicates that the gasket has aged and needs to be replaced. The controller will activate the alarm in the command room. It is known that the pumping volume and the alarm value can be calculated or determined by those skilled in the art based on the dimensions of the annular groove 401, the dimensions of the elastic sealing gasket 2, the maximum deformation of the new elastic sealing gasket 2, and the maximum deformation of the elastic sealing gasket 2 that has reached the aging level, or by conducting a limited number of experiments. After a single test is completed, the controller will activate the first solenoid valve 404 to open and release the pressure in the annular groove 401.

[0026] To improve sealing, an inner gasket 201 is integrally formed on one side of the elastic sealing gasket 2. The inner gasket 201 is fitted to the tube of the flow meter body 1. Along the flow direction of the fluid, a filter assembly 3 is provided inside the inner gasket 201 on the inlet side of the flow meter body 1.

[0027] like Figure 3 and Figure 4As shown, the filter element includes a perforated support frame 301 fixed to the inner wall of the inner pad 201. A support rod 302 is fixed to one side of the perforated support frame 301. A frustum-shaped filter screen 303 is fixed between the support rod 302 and the perforated support frame 301. In this way, after the fluid flows into the flow meter body 1, impurities in the fluid are filtered through the filter screen 303, thereby improving the service life of the flow meter body 1.

[0028] When the pipeline valve is closed, water hammer will be generated inside the pipe. Traditional plate filters are generally plate-shaped, so when subjected to water hammer pressure impact, the entire mesh surface is subjected to a huge pressure that is uniform and perpendicular to the mesh surface almost simultaneously. This uniform load can easily cause large bending stress and deformation in the planar structure, especially in the central area, which may lead to filter breakage or permanent deformation. In this solution, the filter 303 is set as a frustum shape, which has a better arch effect or shell effect. This geometry can more effectively convert the concentrated pressure load into membrane stress (mainly tensile or compressive stress) and transfer it to the support structure along the shell surface. Compared with the bending stress of the plane, the membrane stress can usually be more evenly distributed, and the structure is less likely to buckle or local damage. Therefore, the service life of the filter assembly 3 is improved.

[0029] Example 2: An exhaust pipe 405 is fixedly connected to the intake pipe 402 located between the first solenoid valve 404 and the electronic pressure gauge 403. A second solenoid valve 406 is connected to the body of the exhaust pipe 405, and a booster pump 408 is also connected to the body of the intake pipe 402.

[0030] Specifically, the timer in the controller operates for a ten-day timing cycle. After each cycle ends, the controller controls the booster pump 408 to pump gas into the annular groove 401. When the amount of air flowing through the gas flow meter 407 reaches the set value, the controller controls the booster pump 408, the first solenoid valve 404, and the second solenoid valve 406 to close. When the air pressure detected by the electronic pressure gauge 403 is greater than the set warning value, it indicates that the deformation of the elastic sealing gasket 2 is poor, indicating that the sealing gasket has aged and needs to be replaced. After the test time ends, the controller controls the second solenoid valve 406 to open, thereby releasing the pressure in the annular groove 401.

[0031] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended embodiments and their equivalents.

Claims

1. A large-bore flowmeter comprising a flowmeter body (1) and a controller, characterised in that: Both sides of the flow meter body (1) are provided with elastic sealing gaskets (2). Both ends of the tubes on both sides of the flow meter body (1) are provided with annular grooves (401). The top of the tube of the flow meter body (1) is provided with a through hole that communicates with the annular grooves (401). An air inlet pipe (402) is fixed on the outside of the through hole. An electronic pressure gauge (403), a first solenoid valve (404) and a gas flow meter (407) are respectively connected to the tube of the air inlet pipe (402).

2. A large-bore flow meter according to claim 1, wherein: The inner walls of both sides of the flow meter body (1) are provided with guide grooves (101), and a number of guide blocks (202) are fixed on one side of the elastic sealing gasket (2). The guide blocks (202) are adapted to the guide grooves (101).

3. A large-diameter flow meter according to claim 2, characterized in that: One side of the elastic sealing gasket (2) is integrally formed with an inner gasket (201), which is attached to the tube body of the flow meter body (1).

4. A large-diameter flow meter according to claim 2, characterized in that: Along the flow direction of the fluid, a filter assembly (3) is provided inside the inner pad (201) on the inlet side of the flow meter body (1).

5. A large-diameter flow meter according to claim 4, characterized in that: The filter element includes a perforated support frame (301) fixed to the inner wall of the inner pad (201), a support rod (302) fixed to one side of the perforated support frame (301), and a frustum-shaped filter screen (303) fixed between the support rod (302) and the perforated support frame (301).

6. A large-diameter flow meter according to claim 1, characterized in that: An exhaust pipe (405) is fixedly connected to the air intake pipe (402) located between the first solenoid valve (404) and the electronic pressure gauge (403), and a second solenoid valve (406) is connected to the pipe body of the exhaust pipe (405). A booster pump (408) is also connected to the body of the intake pipe (402).

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