Orifice plate type flowmeter convenient for pollution discharge

Abstract

The utility model discloses an orifice plate type flowmeter convenient for pollution discharge. A sampling tube is too thin or impurities exist in a measured medium, so that the sampling tube is blocked, the measurement of an orifice plate type flowmeter is inaccurate, and the measurement accuracy and the use reliability of the orifice plate type flowmeter are reduced. The device comprises two sampling pipes, a three-valve group, a differential pressure transmitter and a connecting pipeline, the two sampling pipes are fixedly connected with the connecting pipeline, a three-way valve is fixedly mounted on each sampling pipe, a pressurizing air inlet pipeline is fixedly inserted into each three-way valve, a pressurizing air inlet valve is fixedly mounted at one end of each pressurizing air inlet pipeline, and a pressurizing air outlet valve is fixedly mounted at the other end of each pressurizing air inlet pipeline. A first annular plate is fixedly installed on the pressurizing air inlet valve, a compressed air pipeline is fixedly installed at one end of the first annular plate, and a connecting piece is movably installed on the compressed air pipeline. The utility model is used for the pollution discharge of the orifice plate type flowmeter.

Description

Technical Field

[0001] The utility model relates to the field of orifice plate flowmeters, and particularly relates to an orifice plate flowmeter convenient for sewage discharge. Background Technique

[0002] The orifice plate flowmeter, also known as the differential pressure flowmeter, is a widely used flowmeter. It is composed of a standard orifice plate and a multi-parameter differential pressure transmitter (or a differential pressure transmitter, a temperature transmitter, and a pressure transmitter), and can measure the flow rates of gases, steam, and liquids. This flowmeter has the characteristics of simple structure, convenient maintenance, and stable performance, and is widely used in the process control and measurement in fields such as petroleum, chemical industry, metallurgy, electric power, heat supply, and water supply. By measuring the static pressure difference generated when the fluid flows through the orifice plate, combined with relevant parameters and the principles of flow continuity and Bernoulli's equation, the flow rate can be deduced. When the orifice plate flowmeter is in use, if the sampling pipe is too thin or the measured medium contains impurities, the sampling pipe will be blocked, resulting in inaccurate measurement of the orifice plate flowmeter, thereby reducing the measurement accuracy and reliability of the orifice plate flowmeter. Therefore, an orifice plate flowmeter convenient for sewage discharge is needed to solve the above problems. Content of the Utility Model

[0003] The main purpose of the utility model is to provide an orifice plate flowmeter convenient for sewage discharge, which can effectively solve the problems in the background technique.

[0004] The above purpose is achieved by the following technical solutions:

[0005] An orifice plate flowmeter convenient for sewage discharge, which comprises a sampling pipe, a three-way valve group, a differential pressure transmitter, and a connecting pipe. There are two sampling pipes, both of which are fixedly connected to the connecting pipe. A three-way valve is fixedly installed on the sampling pipe. A pressurized air inlet pipe is fixedly inserted on the three-way valve. One end of the pressurized air inlet pipe is fixedly installed with a pressurized air inlet valve. A first annular plate is fixedly installed on the pressurized air inlet valve. One end of the first annular plate is fixedly installed with a compressed air pipe. A connecting member is movably installed on the compressed air pipe. The connecting member consists of an annular base plate and a connecting plate. There are four connecting plates, which are symmetrically and fixedly installed at one end of the annular base plate. Four fixing components are symmetrically and fixedly installed at one end of the first annular plate. The fixing component consists of a fixing plate, a guiding plate, a moving plate, an inserting block, and a fixing spring. There are two guiding plates, which are symmetrically and fixedly installed at one end of the fixing plate. The moving plate is slidably installed on the two guiding plates. The inserting block is fixedly installed at one end of the moving plate. The inserting block is simultaneously inserted into the connecting plate. The fixing spring connects the fixing plate and the moving plate together.

[0006] The described orifice flowmeter facilitating sewage discharge, wherein the connecting pipe is fixedly installed on the pipeline to be measured, and the three-valve group connects the sampling pipe with the differential pressure transmitter, and the three-valve group is fixedly connected to the sampling pipe and the differential pressure transmitter.

[0007] The described orifice flowmeter facilitating sewage discharge, wherein the pressurized air inlet valve consists of a valve body and a connecting flange. The connecting flange is fixedly installed at one end of the valve body, and the connecting flange is fixedly connected to the pressurized air inlet pipe through bolts.

[0008] The described orifice flowmeter facilitating sewage discharge, wherein the first annular plate is fixedly installed at one end of the valve body. Four first grooves are symmetrically arranged on the outer wall of the first annular plate, and the first grooves penetrate through the first annular plate.

[0009] The described orifice flowmeter facilitating sewage discharge, wherein the compressed air pipe consists of a pipe body and a second annular plate. The second annular plate is fixedly installed at one end of the pipe body. Four second grooves are symmetrically arranged on the outer wall of the second annular plate, and the second grooves penetrate through the second annular plate.

[0010] The described orifice flowmeter facilitating sewage discharge, wherein the annular base plate on the connecting piece is slidably sleeved on the pipe body. The connecting plate passes through the first grooves and the second grooves, and slots are simultaneously arranged on the connecting plate.

[0011] The described orifice flowmeter facilitating sewage discharge, wherein the fixing plate on the fixing component is fixedly installed at one end of the first annular plate. Two installation through grooves are symmetrically arranged on the moving plate. The moving plate is slidably sleeved on the guide plate through the installation through grooves. The insertion block is inserted into the slot, and the fixing spring is fixedly connected to the fixing plate and the moving plate. Beneficial effects

[0012] 1. In the present utility model, by arranging a three-way valve on the sampling pipe, connecting the three-way valve with the pressurized air inlet valve through the pressurized air inlet pipe, and simultaneously arranging a compressed air pipe on the pressurized air inlet valve, compressed air with a certain pressure can be used to conveniently flush out the impurities in the sampling pipe through the compressed air pipe, the pressurized air inlet valve, the pressurized air inlet pipe, and the three-way valve, and discharge them into the pipeline to be measured; by arranging the first annular plate, the second annular plate, the connecting piece, and the fixing component, the connection and disassembly of the pressurized air inlet valve and the compressed air pipe can be facilitated, thereby improving the convenience of sewage discharge from the sampling pipe. Description of the drawings

[0013] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0014] Figure 2For the present utility model Figure 1 The enlarged view of part A of

[0015] Figure 3 The structural schematic diagram of the pressurized air inlet valve, the first annular plate and the compressed air pipeline of the present utility model;

[0016] Figure 4 The structural schematic diagram of the connecting piece of the present utility model;

[0017] Figure 5 The structural schematic diagram of the fixing component of the present utility model;

[0018] In the figure: 1. Sampling pipe; 2. Three-way valve group; 3. Differential pressure transmitter; 4. Connecting pipeline; 5. Pipeline to be measured; 6. Three-way valve; 7. Pressurized air inlet pipeline; 8. Pressurized air inlet valve; 9. First annular plate; 10. Compressed air pipeline; 11. Connecting piece; 12. Fixing component; 13. Valve body; 14. Connecting flange; 15. First groove; 16. Fixing spring; 17. Pipeline body; 18. Second annular plate; 19. Second groove; 20. Annular base plate; 21. Connecting plate; 22. Slot; 23. Fixing plate; 24. Guide plate; 25. Moving plate; 26. Insert block; 27. Installation through groove. Detailed implementation manners

[0019] Please refer to Figures 1-5As shown in the figure, an orifice flowmeter facilitating sewage discharge includes a sampling pipe 1, a three-valve group 2, a differential pressure transmitter 3, and a connecting pipe 4. There are two sampling pipes 1, both of which are fixedly connected to the connecting pipe 4. A three-way valve 6 is fixedly installed on the sampling pipe 1, and a pressurized air inlet pipe 7 is fixedly inserted into the three-way valve 6. One end of the pressurized air inlet pipe 7 is fixedly installed with a pressurized air inlet valve 8. A first annular plate 9 is fixedly installed on the pressurized air inlet valve 8. One end of the first annular plate 9 is fixedly installed with a compressed air pipe 10. A connecting member 11 is movably installed on the compressed air pipe 10. The connecting member 11 is composed of an annular substrate 20 and a connecting plate 21. There are four connecting plates 21, which are symmetrically and fixedly installed at one end of the annular substrate 20. Four fixing components 12 are symmetrically and fixedly installed at one end of the first annular plate 9. The fixing component 12 is composed of a fixing plate 23, a guide plate 24, a moving plate 25, an insertion block 26, and a fixing spring 16. There are two guide plates 24, which are symmetrically and fixedly installed at one end of the fixing plate 23. The moving plate 25 is slidably installed on the two guide plates 24. The insertion block 26 is fixedly installed at one end of the moving plate 25. The insertion block 26 is simultaneously inserted into the connecting plate 21. The fixing spring 16 connects the fixing plate 23 and the moving plate 25 together. During use, the pipe body 17 on the compressed air pipe 10 can be connected to an air compression device. When the sampling pipe 1 is blocked by impurities, the three-valve group 2 can be closed first, and then the compressed air pipe 10 can be connected to the pressurized air inlet valve 8. During this process, the second annular plate 18 can be first attached to the first annular plate 9, and then the moving plate 25 on the fixing component 12 can be pushed towards the fixing plate 23. At this time, the fixing spring 16 will be compressed by the moving plate 25 and the fixing plate 23. Then, the connecting member 11 can be pushed towards the second annular plate 18 and the first annular plate 9. Finally, the annular substrate 20 contacts the second annular plate 18, and the connecting plate 21 is located in the first groove 15 and the second groove 19. Finally, the moving plate 25 is released, so that the insertion block 26 is inserted into the connecting plate 21 under the elastic force of the fixing spring 16. At this time, the compressed air pipe 10 and the pressurized air inlet valve 8 are connected together. Then, the pressurized air inlet valve 8 is opened, and the sampling pipe 1 is communicated with the pressurized air inlet pipe 7 by using the three-way valve 6. Finally, compressed air is injected into the compressed air pipe 10 through the air compression device. Then, the compressed air will sequentially pass through the compressed air pipe 10, the pressurized air inlet valve 8, the pressurized air inlet pipe 7, the three-way valve 6, and the sampling pipe 1, so that the impurities in the sampling pipe 1 can be flushed out and discharged into the measured pipe 5. At this time, the cleaning of the blocked sundries in the sampling pipe 1 is completed.

[0020] Finally, by installing a three-way valve 6 on the sampling pipe 1 and connecting the three-way valve 6 to the pressurized air inlet valve 8 through a pressurized air inlet pipe 7, and at the same time installing a compressed air pipe 10 on the pressurized air inlet valve 8, compressed air with a certain pressure can conveniently flush out the impurities in the sampling pipe 1 through the compressed air pipe 10, the pressurized air inlet valve 8, the pressurized air inlet pipe 7 and the three-way valve 6, and discharge them into the pipeline 5 to be measured. By setting the first annular plate 9, the second annular plate 18, the connecting piece 11 and the fixing component 12, it is convenient to connect and disassemble the pressurized air inlet valve 8 and the compressed air pipe 10, thereby improving the convenience of sewage discharge of the sampling pipe 1.

[0021] Furthermore, the connecting pipe 4 is fixedly installed on the pipeline 5 to be measured. The three-valve group 2 connects the sampling pipe 1 and the differential pressure transmitter 3, and the three-valve group 2 is fixedly connected to the sampling pipe 1 and the differential pressure transmitter 3. The pressurized air inlet valve 8 is composed of a valve body 13 and a connecting flange 14. The connecting flange 14 is fixedly installed at one end of the valve body 13. The connecting flange 14 is fixedly connected to the pressurized air inlet pipeline 7 through bolts. The first annular plate 9 is fixedly installed at one end of the valve body 13. Four first grooves 15 are symmetrically arranged on the outer wall of the first annular plate 9. The first grooves 15 penetrate through the first annular plate 9. The compressed air pipeline 10 is composed of a pipeline body 17 and a second annular plate 18. The second annular plate 18 is fixedly installed at one end of the pipeline body 17. Four second grooves 19 are symmetrically arranged on the outer wall of the second annular plate 18. The second grooves 19 penetrate through the second annular plate 18. The annular substrate 20 on the connecting piece 11 is slidably sleeved on the pipeline body 17. The connecting plate 21 passes through the first grooves 15 and the second grooves 19. A slot 22 is formed in the connecting plate 21. The fixing plate 23 on the fixing assembly 12 is fixedly installed at one end of the first annular plate 9. Two mounting through grooves 27 are symmetrically arranged on the moving plate 25. The moving plate 25 is slidably sleeved on the guide plate 24 through the mounting through grooves 27. The insertion block 26 is inserted into the slot 22. The fixing spring 16 is fixedly connected to the fixing plate 23 and the moving plate 25. When connecting the compressed air pipeline 10 to the pressurized air inlet valve 8, the second annular plate 18 needs to be first brought into contact with the first annular plate 9, and at the same time, the first grooves 15 and the second grooves 19 are aligned. Then, the moving plate 25 on the fixing assembly 12 is pushed towards the fixing plate 23. At this time, the fixing spring 16 will be compressed by the moving plate 25 and the fixing plate 23. Then, the connecting piece 11 moves towards the second annular plate 18, so that finally the annular substrate 20 contacts the first annular plate 9, and the connecting plate 21 passes through the first grooves 15 and the second grooves 19. Finally, the moving plate 25 is released, so that under the elastic force of the fixing spring 16, the insertion block 26 is inserted into the slot 22, and at this time, the connection between the compressed air pipeline 10 and the pressurized air inlet valve 8 is completed; when disassembling the compressed air pipeline 10 from the pressurized air inlet valve 8, first move the insertion block 26 out of the slot 22, and then the compressed air pipeline 10 can be moved away from the pressurized air inlet valve 8, so that the connecting plate 21 is moved out of the first grooves 15.

Claims

1. An orifice plate flowmeter facilitating sewage discharge, which comprises a sampling pipe, a three-valve group, a differential pressure transmitter, and a connecting pipe. There are two sampling pipes, both of which are fixedly connected to the connecting pipe. The characteristics are as follows: A three-way valve is fixedly installed on the sampling pipe. A pressurized air inlet pipe is fixedly inserted into the three-way valve. A pressurized air inlet valve is fixedly installed at one end of the pressurized air inlet pipe. A first annular plate is fixedly installed on the pressurized air inlet valve. A compressed air pipe is fixedly installed at one end of the first annular plate. A connector is movably installed on the compressed air pipe. The connector consists of an annular base plate and a connecting plate. There are four connecting plates, which are symmetrically and fixedly installed at one end of the annular base plate. Four fixing components are symmetrically and fixedly installed at one end of the first annular plate. The fixing component consists of a fixing plate, a guide plate, a moving plate, an insertion block and a fixing spring. There are two guide plates, which are symmetrically and fixedly installed at one end of the fixing plate. The moving plate is slidably installed on the two guide plates. The insertion block is fixedly installed at one end of the moving plate. The insertion block is simultaneously inserted into the connecting plate. The fixing spring connects the fixing plate and the moving plate together.

2. The orifice plate flowmeter convenient for sewage discharge according to claim 1 is characterized in that: The connecting pipe is fixedly installed on the pipeline to be measured. The three-valve group connects the sampling pipe and the differential pressure transmitter, and the three-valve group is fixedly connected to the sampling pipe and the differential pressure transmitter.

3. The orifice plate flowmeter facilitating sewage discharge according to claim 2, characterized in that: The pressurized air inlet valve consists of a valve body and a connecting flange. The connecting flange is fixedly installed at one end of the valve body. The connecting flange is fixedly connected to the pressurized air inlet pipe through bolts.

4. The orifice plate flowmeter convenient for sewage discharge according to claim 3, characterized in that: The first annular plate is fixedly installed at one end of the valve body. Four first grooves are symmetrically formed on the outer wall of the first annular plate, and the first grooves penetrate through the first annular plate.

5. The orifice plate flowmeter facilitating sewage discharge according to claim 4, characterized in that: The compressed air pipe consists of a pipe body and a second annular plate. The second annular plate is fixedly installed at one end of the pipe body. Four second grooves are symmetrically formed on the outer wall of the second annular plate, and the second grooves penetrate through the second annular plate.

6. The orifice plate flowmeter convenient for sewage discharge according to claim 5, characterized in that: The annular base plate of the connector is slidably sleeved on the pipe body. The connecting plate passes through the first grooves and the second grooves, and slots are formed on the connecting plate.

7. The orifice plate flowmeter convenient for sewage discharge according to claim 6, characterized in that: The fixing plate of the fixing component is fixedly installed at one end of the first annular plate. Two installation through grooves are symmetrically formed on the moving plate. The moving plate is slidably sleeved on the guide plate through the installation through grooves. The insertion block is inserted into the slot. The fixing spring is fixedly connected to the fixing plate and the moving plate.

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