Gas flowmeter with air pressure detection function

Abstract

The utility model relates to the technical field of gas metering, and discloses a gas flowmeter with an air pressure detection function, which comprises a flow guide pipe, the outer surface of the flow guide pipe is communicated with a flow detection pipe, an induction main body is screwed on the inner wall of the flow detection pipe, the input end of the flow guide pipe is fixedly provided with a dust filtering assembly through a bolt and a nut, and the dust filtering assembly is fixedly connected with the flow detection pipe. The dust filtering assembly comprises a dust filtering pipe, and a supporting ring is arranged on the inner wall of the dust filtering pipe. According to the gas flow meter with the air pressure detection function, through the dust filtering assembly, gas in a pipeline enters the dust filtering pipe through a first blocking valve under the pressure effect, gas in the dust filtering pipe enters the flow guiding pipe from the output end of a dust filtering net cylinder through the dust filtering net cylinder under the pressure effect, and in the process, most impurity particles in the gas are filtered and separated by the dust filtering net cylinder; the probability that the detection end of the device is adhered and covered by impurity particles is greatly reduced, and the detection precision of the device is effectively improved, so that the practicability of the device is enhanced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas metering, in particular to a gas flow meter with air pressure detection function. Background Art

[0002] A gas flow meter is an instrument installed in a pipeline to detect and record the flow of gas flowing through it. It is widely used in the field of gas metering technology. When in use, the gas flow meter in the prior art detects the flow of gas flowing through the guide tube through the sensing body. However, since some of the detected gases contain suspended impurities, the detection end of the device is easily adhered to by impurity particles during operation, which reduces the detection accuracy of the device and thus affects the practicability of the device.

[0003] Based on this, the utility model designs a gas flow meter with air pressure detection function to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the utility model provides a gas flow meter with air pressure detection function, which solves the problems raised in the above-mentioned background technology.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a gas flow meter with air pressure detection function, comprising a flow guide tube, the outer surface of the flow guide tube is connected to a flow detection tube, the inner wall of the flow detection tube is screwed with a sensing body, the input end of the flow guide tube is fixedly installed with a dust filter assembly by bolts and nuts, the dust filter assembly comprises a dust filter tube, the inner wall of the dust filter tube is provided with a support ring, the inner wall of the support ring is provided with a dust filter mesh cylinder, the outer surface of the dust filter tube is connected to a sewage pipe, the output end of the sewage pipe is connected to a sewage valve, the input end of the dust filter assembly is fixedly installed with a first blocking valve by bolts and nuts, the outer surface of the flow guide tube is connected to a recoil pipe, the input end of the recoil pipe is connected to a recoil valve, the output end of the flow guide tube is connected to a second blocking valve, the outer surface of the flow guide tube is connected to an air pressure detection tube, and the inner wall of the air pressure detection tube is screwed with a barometer.

[0008] Preferably, a support frame is mounted on the outer surface of the dust filter cylinder, and the support frame is fixedly mounted to the support ring by bolts and nuts.

[0009] Preferably, a hanging support plate is provided on the outer surface of the dust filter tube, and a hanging hole is opened on the front side of the hanging support plate.

[0010] Preferably, the flow detection tube and the air pressure detection tube are located on the same axis, and the flow detection tube and the air pressure detection tube have the same diameter.

[0011] Preferably, a guide sign is provided on the outer surface of the guide pipe, and a guide mark is provided on the front of the guide sign.

[0012] Preferably, the surfaces of the flow guide tube, flow detection tube, dust filter tube, support ring, sewage pipe, recoil pipe and air pressure detection tube are all provided with an anti-corrosion coating.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the utility model provides a gas flow meter with air pressure detection, which has the following beneficial effects:

[0015] 1. The gas flow meter with air pressure detection function uses a dust filter component to allow the gas in the pipeline to enter the dust filter pipe through the first blocking valve under pressure. The gas in the dust filter pipe enters the guide pipe from its output end through the dust filter net cylinder under pressure. In this process, most of the impurity particles in the gas are filtered and separated by the dust filter net cylinder, which greatly reduces the probability of the detection end of the device being adhered and covered by impurity particles, effectively improves the detection accuracy of the device, and thus enhances the practicability of the device.

[0016] 2. The gas flow meter with air pressure detection function uses a barometer to enable the sensing body to detect and record the pressure and flow of the gas passing through the guide pipe. At the same time, the barometer monitors the pressure of the gas passing through the guide pipe in real time. During the inspection of the device, the inspection personnel compare the information displayed by the sensing body with the reference air pressure detection information displayed by the barometer, and then determine the accuracy of the device display information based on the comparison information, which effectively improves the convenience of determining the device status and increases the speed of discovering device abnormalities, thereby enhancing the applicability of the device.

[0017] 3. The gas flow meter with air pressure detection function connects the recoil pipe with the external inflation pipe through the recoil valve, so that the recoil gas in the external inflation pipe enters the recoil pipe through the recoil valve, and the recoil gas in the recoil pipe enters the dust filter pipe through the guide pipe. The recoil gas in the dust filter pipe passes through the dust filter net cylinder and is output from the sewage pipe. In this process, the recoil gas drives the impurities on the surface of the dust filter net cylinder to be discharged from the output end of the sewage pipe, which effectively improves the convenience of cleaning the device, thereby enhancing the practicability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the utility model;

[0019] Figure 2 It is a front view of the structure of the utility model;

[0020] Figure 3 It is a schematic diagram of the three-dimensional structure explosion of the dust filter assembly of the utility model.

[0021] In the figure: 1. flow guide tube; 2. flow detection tube; 3. sensing body; 4. dust filter assembly; 5. dust filter tube; 6. support ring; 7. dust filter net cylinder; 8. sewage pipe; 9. sewage valve; 10. first blocking valve; 11. recoil pipe; 12. recoil valve; 13. second blocking valve; 14. air pressure detection tube; 15. pressure gauge; 16. support frame; 17. lifting support plate; 18. guide sign. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-3The utility model provides a technical solution: a gas flow meter with air pressure detection, comprising a flow guide tube 1, the outer surface of the flow guide tube 1 is connected with a flow detection tube 2, the inner wall of the flow detection tube 2 is screwed with a sensing body 3, the input end of the flow guide tube 1 is fixedly installed with a dust filter assembly 4 by bolts and nuts, through the dust filter assembly 4, the gas in the pipeline passes through the first blocking valve 10 under pressure and enters the dust filter tube 5, the gas in the dust filter tube 5 passes through the dust filter net cylinder 7 under pressure and enters the flow guide tube 1 from its output end, in this process, most of the impurity particles in the gas are filtered by the dust filter net cylinder 7 The separation greatly reduces the probability that the detection end of the device is adhered and covered by foreign particles, effectively improves the detection accuracy of the device, and thus enhances the practicality of the device. The dust filter component 4 includes a dust filter tube 5, the inner wall of the dust filter tube 5 is provided with a support ring 6, the inner wall of the support ring 6 is provided with a dust filter net cylinder 7, the outer surface of the dust filter tube 5 is connected with a drain pipe 8, the output end of the drain pipe 8 is connected with a drain valve 9, the input end of the dust filter component 4 is fixedly installed with a first blocking valve 10 by bolts and nuts, the outer surface of the guide tube 1 is connected with a recoil pipe 11, the input end of the recoil pipe 11 is connected with a recoil valve 12, and the recoil valve 12 connects the recoil pipe 11 with the external inflation pipe, so that the recoil gas in the external inflation pipe enters the recoil pipe 11 through the recoil valve 12, and the recoil gas in the recoil pipe 11 enters the dust filter pipe 5 through the guide pipe 1, and the recoil gas in the dust filter pipe 5 is output from the sewage pipe 8 through the dust filter net cylinder 7. In this process, the recoil gas drives the impurities on the surface of the dust filter net cylinder 7 to be discharged from the output end of the sewage pipe 8, which effectively improves the convenience of cleaning the device, thereby enhancing the practicality of the device. The output end of the guide pipe 1 is connected to the second blocking valve 13, and the outer surface of the guide pipe 1 is connected to the air pressure detection pipe 14. A barometer 15 is screwed onto the inner wall of the air pressure detection tube 14. Through the barometer 15, the sensing body 3 detects and records the pressure and flow of the gas passing through the guide tube 1. At the same time, the barometer 15 monitors the pressure of the gas passing through the guide tube 1 in real time. During the inspection of the device, the inspection personnel compare the information displayed by the sensing body 3 with the reference air pressure detection information displayed by the barometer 15, and then determine the accuracy of the information displayed by the device based on the comparison information, which effectively improves the convenience of determining the status of the device, increases the speed of detecting abnormalities in the device, and thus enhances the applicability of the device.

[0024] In the utility model, in order to reduce the probability of deformation failure of the dust filter screen cylinder 7, a support frame 16 for applying supporting stress thereto is mounted on the outer surface of the dust filter screen cylinder 7, thereby offsetting the deformation stress generated when the gas flows through the dust filter screen cylinder 7. The support frame 16 is fixed to the support ring 6 by bolts and nuts, thereby reducing the probability of deformation failure of the dust filter screen cylinder 7.

[0025] In the utility model, in order to reduce the pressure transmitted from the device to the pipeline, a hanging support plate 17 is provided on the outer surface of the dust filter tube 5, and a hanging hole is opened on the front side of the hanging support plate 17. Through the hanging hole opened on the front side of the hanging support plate 17, the device is fixed to the set position with the cooperation of the hook, thereby reducing the pressure transmitted from the device to the pipeline.

[0026] In the utility model, in order to reduce the probability of errors in the air pressure measurement results of the barometer 15 and the sensing body 3, the flow detection tube 2 and the air pressure detection tube 14 are set to be located on the same axis, and the diameters of the flow detection tube 2 and the air pressure detection tube 14 are set to be equal, thereby reducing the difference in detection environment between the barometer 15 and the sensing body 3, thereby reducing the probability of errors in the air pressure measurement results of the barometer 15 and the sensing body 3.

[0027] In the utility model, in order to improve the convenience during the installation of the device, a guide sign 18 is provided on the outer surface of the guide pipe 1, and a guide mark is provided on the front of the guide sign 18. Through the guide mark provided on the front of the guide sign 18, the operator can quickly determine the direction of the airflow in the device, thereby improving the convenience during the installation of the device.

[0028] In the utility model, in order to extend the effective service life of the device, an anti-corrosion coating for reducing the rust rate is provided on the surfaces of the flow guide tube 1, the flow detection tube 2, the dust filter tube 5, the support ring 6, the sewage pipe 8, the recoil pipe 11 and the air pressure detection tube 14, thereby extending the effective service life of the device.

[0029] The electrical components mentioned in this article are all connected to an external main controller and 220V mains electricity, and the main controller can be a conventional known device for controlling a computer or the like.

[0030] When in use, first fix the device to the set position of the pipeline by bolts and nuts. After the device is installed, the gas in the pipeline enters the dust filter pipe 5 through the first blocking valve 10 under the action of pressure. The gas in the dust filter pipe 5 passes through the dust filter mesh cylinder 7 from its output end under the action of pressure. In this process, most of the impurity particles in the gas are filtered and separated by the dust filter mesh cylinder 7. The sensing body 3 installed in the flow detection tube 2 detects and records the pressure and flow of the gas passing through the guide pipe 1. At the same time, the barometer 15 installed in the air pressure detection tube 14 monitors the pressure of the gas passing through the guide pipe 1 in real time. The inspection personnel use the reference air pressure detection information displayed by the barometer 15 during the inspection of the device. The information displayed by the sensing body 3 is compared, and then the accuracy of the information displayed by the device is determined based on the comparison information. When it is necessary to clean the impurities accumulated in the device, the device is first disconnected from the external pipeline through the first blocking valve 10 and the second blocking valve 13, and then the recoil pipe 11 is connected to the external inflation pipeline through the recoil valve 12. The recoil gas in the external inflation pipeline enters the recoil pipe 11 through the recoil valve 12, and the recoil gas in the recoil pipe 11 enters the dust filter pipe 5 through the guide pipe 1, and the recoil gas in the dust filter pipe 5 is output from the sewage pipe 8 through the dust filter mesh cylinder 7. In this process, the recoil gas drives the impurities on the surface of the dust filter mesh cylinder 7 to be discharged from the output end of the sewage pipe 8. After the cleaning is completed, the device is reset to continue the operation.

[0031] To sum up, the gas flow meter with air pressure detection function uses the dust filter component 4 to allow the gas in the pipeline to enter the dust filter pipe 5 through the first blocking valve 10 under pressure. The gas in the dust filter pipe 5 enters the guide pipe 1 from its output end through the dust filter mesh cylinder 7 under pressure. In this process, most of the impurity particles in the gas are filtered and separated by the dust filter mesh cylinder 7, which greatly reduces the probability of the detection end of the device being adhered and covered by impurity particles, effectively improves the detection accuracy of the device, and thus enhances the practicability of the device.

[0032] The gas flow meter with air pressure detection function enables the sensing body 3 to detect and record the pressure and flow of the gas passing through the flow guide tube 1 through the barometer 15. At the same time, the barometer 15 monitors the pressure of the gas passing through the flow guide tube 1 in real time. During the inspection of the device, the inspection personnel compare the information displayed by the sensing body 3 with the reference air pressure detection information displayed by the barometer 15, and then determine the accuracy of the device display information based on the comparison information, which effectively improves the convenience of determining the device status, increases the speed of discovering device abnormalities, and thus enhances the applicability of the device.

[0033] The gas flow meter with air pressure detection function connects the recoil pipe 11 with the external inflation pipe through the recoil valve 12, so that the recoil gas in the external inflation pipe enters the recoil pipe 11 through the recoil valve 12, and the recoil gas in the recoil pipe 11 enters the dust filter pipe 5 through the guide pipe 1, and the recoil gas in the dust filter pipe 5 passes through the dust filter net cylinder 7 and is output from the sewage pipe 8. In this process, the recoil gas drives the impurities on the surface of the dust filter net cylinder 7 to be discharged from the output end of the sewage pipe 8, which effectively improves the convenience of cleaning the device, thereby enhancing the practicability of the device.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gas flow meter with air pressure detection function, comprising a flow guide tube (1), the outer surface of the flow guide tube (1) is connected to a flow detection tube (2), and the inner wall of the flow detection tube (2) is screwed with a sensing body (3), characterized in that: The input end of the guide tube (1) is fixedly mounted with a dust filter assembly (4) by means of bolts and nuts. The dust filter assembly (4) comprises a dust filter tube (5). The inner wall of the dust filter tube (5) is provided with a support ring (6). The inner wall of the support ring (6) is provided with a dust filter net cylinder (7). The outer surface of the dust filter tube (5) is connected to a sewage discharge pipe (8). The output end of the sewage discharge pipe (8) is connected to a sewage discharge valve (9). The input end of the dust filter assembly (4) is fixedly mounted with a first blocking valve (10) by means of bolts and nuts. The outer surface of the guide tube (1) is connected to a recoil tube (11). The input end of the recoil tube (11) is connected to a recoil valve (12). The output end of the guide tube (1) is connected to a second blocking valve (13). The outer surface of the guide tube (1) is connected to an air pressure detection tube (14). The inner wall of the air pressure detection tube (14) is screwed with an air pressure gauge (15).

2. A gas flow meter with air pressure detection function according to claim 1, characterized in that: The outer surface of the dust filter cylinder (7) is sleeved with a support frame (16), and the support frame (16) is fixedly mounted to the support ring (6) by means of bolts and nuts.

3. A gas flow meter with air pressure detection function according to claim 1, characterized in that: The outer surface of the dust filter tube (5) is provided with a hanging support plate (17), and the front side of the hanging support plate (17) is provided with a hanging hole.

4. A gas flow meter with air pressure detection function according to claim 1, characterized in that: The flow detection tube (2) and the air pressure detection tube (14) are located on the same axis, and the flow detection tube (2) and the air pressure detection tube (14) have the same diameter.

5. A gas flow meter with air pressure detection function according to claim 1, characterized in that: The outer surface of the guide pipe (1) is provided with a guide sign (18), and the front of the guide sign (18) is provided with a guide mark.

6. A gas flow meter with air pressure detection function according to claim 1, characterized in that: The surfaces of the flow guide tube (1), the flow detection tube (2), the dust filter tube (5), the support ring (6), the sewage discharge pipe (8), the recoil pipe (11) and the air pressure detection tube (14) are all provided with an anti-corrosion coating.

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