Straight-pipe-section-free wide-range pressure tapping sensor for pipeline fluid

Abstract

The utility model discloses a wide-range pressure tapping sensor without a straight pipe section, which comprises a sensor main body, the sensor main body is arranged on a test pipeline, a probe support rod is positioned at the bottom of the sensor main body, the probe support rod is positioned in the test pipeline, a high-pressure groove-shaped pressure tapping hole and a low-pressure pressure tapping hole are formed in the bottom of the probe support rod, and the high-pressure groove-shaped pressure tapping hole is communicated with the low-pressure groove-shaped pressure tapping hole. A high-low pressure separation point is arranged between the high-pressure groove-shaped pressure tapping hole and the low-pressure pressure tapping hole, and a reinforcing rib is integrally formed on the probe supporting rod and located on the outer sides of the high-pressure groove-shaped pressure tapping hole and the low-pressure pressure tapping hole. According to the wide-range pressure tapping sensor without the straight pipe section for the pipeline fluid, the probe with the groove-shaped section shape can generate accurate pressure distribution, the low-pressure pressure tapping hole is formed in the rear lower portion of the probe of a fixed fluid separation point, the turbulent flow holes without the straight pipe section are formed in the two sides of the low-pressure hole, and the groove-shaped pressure tapping hole in front of the fluid separation point is high pressure. A stable differential pressure signal can be generated, straight-pipe-section-free turbulent flow releasing holes are formed in the two sides of a low-pressure hole, a turbulent flow field generated in the straight-pipe-section-free measurement process is effectively prevented, an internal integrated structure is adopted, pressure taking is more stable, the probe structural strength is better, and long-term high precision can be kept.

Description

TECHNICAL FIELD

[0001] The utility model relates to fluid flow sensor field, especially relate to a wide range pressure taking sensor of no straight pipe section of good quantity bar flow. BACKGROUND

[0002] Good quantity bar flow sensor of no straight pipe section is a kind of supporting equipment for pipeline fluid flow measurement, is applied to petroleum, chemical industry, electric power, metallurgy and other industries, after overall assembly, calibration, configuration and leakage test, direct installation is realized, good quantity bar flow sensor is designed according to international standard ISO 3966 "measurement of fluid flow in closed conduits - velocity-area method using pitot static tubes", sensor directly extracts the differential pressure of fluid in pipeline, and then converts into the differential pressure flowmeter of fluid volume flow and mass flow, with the continuous development of science and technology, people's manufacturing process requirements for good quantity bar flow sensor of no straight pipe section are also higher and higher.

[0003] The existing flow sensor has certain disadvantages in use, first, when using, the existing flow sensor is more troublesome to install, for large pipe diameter, straight pipe section is insufficient to measure precision and can not well reach the requirement, stability and reliability are poor, it is not conducive to people's use, in addition, the existing flow sensor cannot realize wide range measurement, cannot reach application effect, brings certain adverse effect to people's use, for this, we propose a wide range pressure taking sensor of no straight pipe section for pipeline fluid. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of prior art, the utility model provides a wide range pressure taking sensor of no straight pipe section for pipeline fluid, and the probe with the groove cross-sectional shape can generate accurate pressure distribution, the low-pressure pressure taking hole is below the probe at the fixed fluid separation point, and the groove pressure taking hole before the fluid separation point is high-pressure, can generate stable differential pressure signal, the low-pressure hole at the back lower side is designed with flow stabilizing hole, integrated structure, pressure taking is more stable, the probe structure strength is better, and through the flow stabilizing hole design, can realize wide range measurement of large pipe diameter medium straight pipe degree, can keep long-term high precision, can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a wide-range pressure tapping sensor for pipeline fluid without straight pipe sections, comprising a sensor body, which is installed on the test pipeline. A probe support rod is positioned at the bottom of the sensor body, and the probe support rod is located inside the test pipeline. A high-pressure groove-shaped pressure tapping hole and a low-pressure pressure tapping hole are opened at the bottom of the probe support rod. A high-pressure and low-pressure separation point is provided between the high-pressure groove-shaped pressure tapping hole and the low-pressure pressure tapping hole. A reinforcing rib is integrally formed on the probe support rod at the position outside the high-pressure groove-shaped pressure tapping hole and the low-pressure pressure tapping hole. The bottom of the probe support rod at the position of the high-pressure groove-shaped pressure tapping hole and the low-pressure pressure tapping hole has a groove-shaped cross-section structure. The low-pressure pressure tapping hole is located at the rear lower part of the probe support rod. The flow stabilizing hole is located on both sides of the low-pressure hole. The high-pressure groove-shaped pressure tapping hole is located at the groove-shaped position at the front end of the probe support rod.

[0006] As a preferred technical solution of this application, the sensor body is installed at the position of the test pipeline and a sealing positioning plate is positioned thereon. The sensor body is provided with a test tube, a connecting flange and a connecting pipe. A shut-off valve is provided on the outer wall of the test tube. A flow meter is installed on the top of the connecting pipe. A connector is positioned on the side of the flow meter. A connecting valve is connected to the front end of the flow meter.

[0007] As a preferred technical solution of this application, a positioning groove is provided in the middle of the sealing positioning disk, a pressure taking cavity is provided on the inner wall of the sealing positioning disk near the positioning groove, a sealing ring is positioned on the surface of the pressure taking cavity, a sealing sheet is positioned on the bottom surface of the sealing positioning disk, and a patch is positioned at the bottom of the outer ring of the sealing sheet. A pressure taking tube is provided inside the sealing positioning disk at the position connecting to the pressure taking cavity, and a sealing plug is provided at the end of the pressure taking tube.

[0008] As a preferred technical solution of this application, the sensor body is sealed and positioned between the sensor body and the test pipe through a sealing positioning plate, the sensor body is connected to the test pipe and the connecting pipe, and the middle position is fixed by a connecting flange.

[0009] As a preferred technical solution of this application, the connecting pipe is connected to the flow meter in a through connection, and the flow meter is connected to the connecting valve and the connector in a through connection.

[0010] As a preferred technical solution of this application, the bottom of the sealing positioning disk is positioned by a patch and sealed by a sealing sheet. The sealing positioning disk and the positioning groove are integrally formed by forging.

[0011] As a preferred technical solution of this application, the pressure tapping tube is filled with fluid into the pressure tapping chamber, and the pressure tapping tube is sealed by a sealing plug, and the pressure tapping chamber is positioned by adhesive bonding with the sealing ring.

[0012] As a preferred technical scheme of the present application, the probe support rod is integrally formed by forging between the high-pressure groove type pressure tapping hole, the high-low pressure separation point, the low-pressure pressure tapping hole and the reinforcing rib, and a stable differential pressure signal is generated between the high-pressure groove type pressure tapping hole and the low-pressure pressure tapping hole.

[0013] Compared with the prior art, the utility model provides a wide range pressure tapping sensor for pipeline fluid without straight pipe section, has the following beneficial effects: the wide range pressure tapping sensor for pipeline fluid without straight pipe section, is widely used in liquid, gas, steam measurement, its advantages are without straight pipe section, wide range ratio, high precision, good stability, strong reliability, simple installation and the like.

[0014] The wide range pressure tapping sensor adopts the most advanced differential pressure type flow measurement technology, completely conforms to the engineering structure design of aerodynamics principle, is a kind of sensor element that reaches the enterprise standard in precision, efficacy and reliability, can accurately measure medium flow rate using air speed pipe principle, and has wide range ratio, simple structure, safety and reliability.

[0015] The probe with groove type cross-sectional shape of the wide range pressure tapping sensor can generate accurate pressure distribution, the low-pressure pressure tapping hole is below the probe at fixed fluid separation point, the groove type pressure tapping hole before fluid separation point is high pressure, a stable differential pressure signal can be generated, and the steady flow holes on both sides of the low-pressure hole can effectively prevent turbulence caused by insufficient medium straight pipe section. The integrated structure inside is more stable in pressure tapping, the probe structure strength is better, long-term high precision can be maintained, the entire wide range pressure tapping sensor for pipeline fluid without straight pipe section has simple structure, convenient operation, and the use effect is better than that of traditional mode. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the overall structure schematic diagram for the utility model for pipeline fluid without straight pipe section wide range pressure tapping sensor.

[0017] Figure 2 It is the structure schematic diagram of the overall top in the utility model for pipeline fluid without straight pipe section wide range pressure tapping sensor.

[0018] Figure 3 It is the structure schematic diagram of the overall side in the utility model for pipeline fluid without straight pipe section wide range pressure tapping sensor.

[0019] Figure 4 It is the structure schematic diagram of the enlarged view of A in the utility model for pipeline fluid without straight pipe section wide range pressure tapping sensor.

[0020] Figure 5 It is the structure schematic diagram of the probe support rod bottom groove type structure in the utility model for pipeline fluid without straight pipe section wide range pressure tapping sensor.

[0021] Figure 6 This is a schematic diagram of the probe support rod in the wide-range pressure tapping sensor for pipeline fluid without straight pipe sections, as described in this utility model.

[0022] Figure 7 This is a schematic diagram of the sealed positioning plate in the wide-range pressure tapping sensor for pipeline fluid without straight pipe sections, which is a feature of this invention.

[0023] In the diagram: 1. Test pipe; 2. Sealing positioning plate; 3. Shut-off valve; 4. Connecting flange; 5. Connector; 6. Connecting valve; 7. Flow meter; 8. Connecting pipe; 9. Test pipe; 10. Sensor body; 11. Probe support rod; 12. High pressure groove type pressure tap; 13. High and low pressure separation point; 14. Low pressure tap; 15. Reinforcing rib; 16. Pressure tapping chamber; 17. Sealing ring; 18. Positioning groove; 19. Pressure tapping pipe; 20. Patch; 21. Sealing plate; 22. Sealing plug; 23. Flow stabilizing hole. Detailed Implementation

[0024] The technical solution of this utility model will now be clearly and completely described in conjunction with the accompanying drawings and specific embodiments.

[0025] like Figures 1-7 As shown, a wide-range pressure tapping sensor for pipeline fluid without straight pipe sections includes a sensor body 10, which is mounted on a test pipeline 1. A probe support rod 11 is positioned at the bottom of the sensor body 10, located inside the test pipeline 1. The bottom of the probe support rod 11 has a high-pressure groove-shaped pressure tapping hole 12 and a low-pressure tapping hole 14. A high-low pressure separation point 13 is provided between the high-pressure groove-shaped pressure tapping hole 12 and the low-pressure tapping hole 14. A reinforcing rib 15 is integrally formed on the probe support rod 11 outside the high-pressure groove-shaped pressure tapping hole 12 and the low-pressure tapping hole 14. The bottom of the probe has a groove-shaped cross-section structure at the positions of the high-pressure groove-shaped pressure tap 12 and the low-pressure pressure tap 14. The low-pressure pressure tap 14 is located at the rear and lower part of the probe support rod 11, and the high-pressure groove-shaped pressure tap 12 is located at the groove position at the front end of the probe support rod 11. The probe with a groove-shaped cross-section can generate precise pressure distribution. The low-pressure pressure tap is located at the rear and lower part of the probe at the fixed fluid separation point. The groove-shaped pressure tap before the fluid separation point is high pressure, which can generate a stable differential pressure signal. The flow stabilizing holes on both sides of the low-pressure tap effectively prevent turbulence. The integrated internal structure makes the pressure tap more stable, the probe structure has better strength, and can maintain high accuracy for a long time.

[0026] The sensor body 10 is installed in the position of the test pipeline 1, and a sealing positioning disc 2 is positioned at the position of the sensor body 10, and the sensor body 10 is provided with a test pipe 9, a connecting flange 4 and a connecting pipe 8, the outer wall of the test pipe 9 is provided with a test valve 3, the top of the connecting pipe 8 is installed with a flowmeter 7, the side of the flowmeter 7 is positioned with a connector 5, and the front end of the flowmeter 7 is connected with a connecting valve 6.

[0027] The middle part of the sealing positioning disc 2 is provided with a positioning groove 18, the inner wall of the sealing positioning disc 2 is provided with a pressure taking cavity 16 near the positioning groove 18, the surface of the pressure taking cavity 16 is positioned with a sealing ring 17, the bottom surface of the sealing positioning disc 2 is positioned with a sealing sheet 21, and the outer ring bottom of the sealing sheet 21 is positioned with a patch 20, and the position of the pressure taking cavity 16 in the sealing positioning disc 2 is provided with a pressure taking pipe 19, and the end of the pressure taking pipe 19 is provided with a sealing plug 22.

[0028] The sensor body 10 is sealed and positioned between the sealing positioning disc 2 and the test pipeline 1, the sensor body 10 is penetrated between the test pipe 9 and the connecting pipe 8, and the middle position is fixed by the connecting flange 4.

[0029] The connecting pipe 8 is connected through the flowmeter 7, and the flowmeter 7 is penetrated between the connecting valve 6 and the connector 5.

[0030] The bottom of the sealing positioning disc 2 is positioned by the patch 20, and is reversely sealed by the sealing sheet 21, and the sealing positioning disc 2 and the positioning groove 18 are integrally processed and formed by forging.

[0031] The pressure taking pipe 19 fills the fluid in the inside of the pressure taking cavity 16, and the pressure taking pipe 19 is sealed by the sealing plug 22, and the pressure taking cavity 16 and the sealing ring 17 are positioned by adhesive.

[0032] The probe support rod 11 is integrally processed and formed with the high-pressure groove type pressure taking hole 12, the high-low pressure separation point 13, the low-pressure pressure taking hole 14 and the reinforcing rib 15, and stable differential pressure signals are generated between the high-pressure groove type pressure taking hole 12 and the low-pressure pressure taking hole 14.

[0033] The good flow sensor is applied to petroleum, chemical industry, electric power, metallurgy and other industries. It can measure the flow of fluid in the pipeline. The good flow sensor combines practical experience and adopts the latest sensor design. After overall assembly, calibration, configuration and leakage test, direct installation is realized.

[0034] Industrial field

[0035] The good flow sensor is widely used in petroleum, chemical industry, electric power, metallurgy, pharmaceutical, textile and other industries. For example, in the petroleum industry, the good flow sensor can be used for crude oil metering; in the chemical industry, the good flow sensor can be used for measuring the flow of various gases, liquids and steam.

[0036] Environmental protection field

[0037] Good mass bar flowmeter is also one of the commonly used measuring instruments in the environmental protection industry. For example, in sewage treatment, good mass bar flowmeter can be used to measure the flow of sewage, facilitating the treatment of sewage.

[0038] Medical field

[0039] In the pharmaceutical field, good mass bar flowmeter can be used for flow measurement of various liquid medicines and drugs.

[0040] Food field

[0041] In the food industry, good mass bar flowmeter is widely used to measure the flow of various foods and beverages. For example, in dairy processing, good mass bar flowmeter can be used to measure the flow of milk, yogurt and the like, to ensure product quality.

[0042] Working principle: the utility model discloses a test pipeline 1, sealing positioning disc 2, test valve 3, connecting flange 4, connector 5, connecting valve 6, flowmeter 7, connecting pipe 8, test pipe 9, sensor main body 10, probe support 11, high pressure groove type pressure tapping hole 12, high and low pressure separation point 13, low pressure pressure tapping hole 14, reinforcing rib 15, pressure tapping cavity 16, sealing ring 17, positioning groove 18, pressure tapping pipe 19, patch 20, sealing piece 21, sealing plug 22, the probe of groove cross section shape can produce accurate pressure distribution, the low pressure pressure tapping hole is below the probe after fixed fluid separation point, and the groove pressure tapping hole before fluid separation point is high pressure, can generate stable differential pressure signal, and effectively prevent blocking, the low pressure hole both sides steady flow hole (23) effectively prevent turbulence, integrated structure, more stable pressure tapping, the probe structure strength is better, and long -term high accuracy can be kept.

[0043] The sensor of groove cross section shape can produce accurate pressure distribution, the low pressure pressure tapping hole is below the probe after fixed fluid separation point 15 °, and the groove pressure tapping hole before fluid separation point is high pressure, can generate stable differential pressure signal, and effectively prevent blocking low pressure hole both sides steady flow hole effectively prevent turbulence.

[0044] Good mass bar flow sensor is suitable for high-precision flow measurement of pipeline fluid.

[0045] The probe of groove cross section shape can produce accurate pressure distribution, the low pressure pressure tapping hole is below the probe after fixed fluid separation point, and the groove pressure tapping hole before fluid separation point is high pressure, can generate stable differential pressure signal, and effectively prevent blocking, the low pressure hole both sides steady flow hole effectively prevent turbulence.

[0046] Good mass bar technology can maximize the measurement of signal stability, while achieving first-class precision.

[0047] The good amount of bar flow sensor can effectively measure stable pressure difference signals under the conditions of small flow and unstable flow field when measuring large pipeline, and has high repeatability. The basic principle and main characteristics and advantages of the utility model are shown and described. The skilled person in the art should understand that the utility model is not limited by the above examples, and the above examples and descriptions in the specification are only to illustrate the principle of the utility model, and various changes and improvements can be made to the utility model without departing from the spirit and scope of the utility model, and these changes and improvements all fall within the scope of the utility model claimed.

Claims

1. A wide range pressure sensor without straight pipe section for pipeline fluid, comprising a sensor body (10), and the sensor body (10) is installed on a test pipeline (1), characterized in that: The bottom of the sensor body (10) is provided with a probe support rod (11), which is located in the internal position of the test pipeline (1), the bottom of the probe support rod (11) is provided with a high pressure slot type pressure tapping hole (12) and a low pressure pressure tapping hole (14), a high and low pressure separation point (13) is arranged between the high pressure slot type pressure tapping hole (12) and the low pressure pressure tapping hole (14), a reinforcing rib (15) is integrally formed on the probe support rod (11) at a position outside the high pressure slot type pressure tapping hole (12) and the low pressure pressure tapping hole (14), the bottom of the probe support rod (11) is provided with a slot type cross section structure at the position of the high pressure slot type pressure tapping hole (12) and the low pressure pressure tapping hole (14), the low pressure pressure tapping hole (14) is located below the rear of the probe support rod (11), and the steady flow hole (23) is located on both sides of the low pressure hole, and the high pressure slot type pressure tapping hole (12) is located at the slot type position of the front end of the probe support rod (11).

2. A wide range pressure sensor without straight pipe run for pipeline fluid according to claim 1, characterized in that: The sensor body (10) is installed in the position of the test pipeline (1) and is provided with a sealing positioning disc (2), the sensor body (10) is provided with a test tube (9), a connecting flange (4) and a connecting pipe (8), the outer wall of the test tube (9) is provided with a shut-off valve (3), the top of the connecting pipe (8) is provided with a flow meter (7), the side of the flow meter (7) is provided with a connector (5), and the front end of the flow meter (7) is connected with a connecting valve (6).

3. A wide range pressure sensor for use in a pipeline fluid according to claim 2, wherein: The middle part of the sealing positioning disc (2) is provided with a positioning groove (18), the inner wall of the sealing positioning disc (2) is provided with a pressure tapping cavity (16) close to the positioning groove (18), the surface of the pressure tapping cavity (16) is provided with a sealing ring (17), the bottom surface of the sealing positioning disc (2) is provided with a sealing piece (21), and the outer ring bottom of the sealing piece (21) is provided with a patch (20), the inside of the sealing positioning disc (2) is provided with a pressure tapping pipe (19) connected with the pressure tapping cavity (16), and the end of the pressure tapping pipe (19) is provided with a sealing plug (22).

4. A wide range pressure sensor without straight pipe run for pipeline fluid according to claim 2, characterized in that: The sensor body (10) is sealingly positioned between the sealing positioning disc (2) and the test pipeline (1), the sensor body (10) penetrates the test tube (9) and the connecting pipe (8), and the middle position is fixed by the connecting flange (4).

5. A wide range pressure sensor without straight pipe run for pipeline fluid as claimed in claim 2 wherein: The connecting pipe (8) is connected with the flow meter (7), and the flow meter (7) is connected with the connecting valve (6) and the connector (5).

6. A wide range pressure sensor without straight pipe run for pipeline fluid as claimed in claim 3 wherein: The bottom of the sealing positioning disc (2) is positioned by the patch (20), and is reversely sealed by the sealing piece (21), and the sealing positioning disc (2) and the positioning groove (18) are integrally formed by forging.

7. A wide range pressure sensor without straight pipe run for pipeline fluid as claimed in claim 3 wherein: The pressure tapping pipe (19) is filled with fluid in the inside of the pressure tapping cavity (16), and the pressure tapping pipe (19) is sealed by the sealing plug (22), and the pressure tapping cavity (16) and the sealing ring (17) are positioned by adhesive.

8. A wide range pressure sensor without straight pipe run for pipeline fluids as claimed in claim 1, wherein: The probe support rod (11) is integrally processed and formed by forging between the high-pressure groove type pressure tapping hole (12), the high-low pressure separation point (13), the low-pressure pressure tapping hole (14) and the reinforcing rib (15), stable differential pressure signals are generated between the high-pressure groove type pressure tapping hole (12) and the low-pressure pressure tapping hole (14), and the steady flow hole (23) can stabilize the flow field of the pipeline.

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