CN218994426U

CN218994426U - Plug-in uniform speed pipe flow sensor

Info

Publication number: CN218994426U
Application number: CN202223538270.7U
Authority: CN
Inventors: 俞平权
Original assignee: Boca Measurement And Control Technology Shanghai Co ltd
Current assignee: Boca Measurement And Control Technology Shanghai Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-09
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses an inserted uniform-speed pipe flow sensor which comprises a conveying pipe, a pressure taking component and a pressure taking pipe, wherein the pressure taking pipe is arranged below the pressure taking component, the pressure taking pipe is inserted into the conveying pipe, the horizontal section of the pressure taking pipe is in a drop shape, a vertical high-pressure cavity and a vertical low-pressure cavity are respectively arranged in the pressure taking pipe, the high-pressure cavity and the low-pressure cavity are all round, a plurality of high-pressure taking holes communicated with the high-pressure cavity are formed in the front side of the pressure taking pipe, a plurality of low-pressure taking holes communicated with the low-pressure cavity are formed in the two sides of the pressure taking pipe, a first valve plug is fixedly arranged at the lower end of the high-pressure cavity, the first valve plug is opened when the pressure in the high-pressure cavity is larger than a threshold value, a second valve plug is fixedly arranged at the lower end of the low-pressure cavity, and two air blowing ports are formed in the upper part of the pressure taking component. When the cleaning device is used for cleaning, the air blowing port is connected to an air source, and impurities adhered to the high-pressure taking hole and the low-pressure taking hole are blown out by utilizing strong air flow, and impurities entering the cleaning device are blown out from the first valve plug and the second valve plug at the lower end, so that the cleaning device is convenient and thorough.

Description

Plug-in uniform speed pipe flow sensor

Technical Field

The utility model relates to the technical field of flowmeters, in particular to an inserted uniform velocity tube flow sensor.

Background

The flow is taken as a basic physical quantity, widely exists in various scientific research production and life, and has very important significance in the aspects of industrial production, energy transmission, power engineering and the like when researching flow measurement technology and equipment. The average speed pipe flowmeter has fast development and application due to the characteristics of the inserted structure, the multipoint measurement of the pipeline section and the like, and particularly in large-diameter pipelines with the diameter of DN200 or more, the application proportion of the average speed pipe flowmeter is higher than 50 percent. The existing uniform-speed pipe flow sensor is easy to adhere to or block the pressure taking hole by impurities or sundries in fluid during operation, and after the uniform-speed pipe flow sensor is used for a long time, the impurities can enter the inside through the pressure taking hole, and when the surface of the pressure taking hole is adhered to or blocked, the pressure taking pipe needs to be taken out for cleaning, so that more time is consumed and production is influenced.

Disclosure of Invention

The utility model aims to provide a plug-in uniform velocity tube flow sensor so as to solve the problems in the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides an inserted uniform velocity tube flow sensor, includes the conveyer pipe, gets the pressure subassembly and gets the pressure tube, get the pressure tube and install in getting the below of pressure subassembly, get the pressure tube and insert the conveyer pipe in, the horizontal cross-section of getting the pressure tube is the water droplet shape, is equipped with vertical high pressure chamber, low pressure chamber in the pressure tube respectively, and high pressure chamber, low pressure chamber are circular, get the front side of pressure tube be equipped with a plurality of high pressure get the pressure hole with the high pressure chamber intercommunication, get the both sides of pressure tube be equipped with a plurality of low pressure get the pressure hole with the low pressure chamber intercommunication, the lower extreme fixed mounting in high pressure chamber has first valve to be blocked up, the first valve is blocked up and is opened when the pressure in the high pressure chamber is greater than the threshold value, the lower extreme fixed mounting in low pressure chamber has the second valve to be blocked up, the second valve is blocked up and the first valve is stifled the same in structure, gets the upper portion of pressure subassembly and is equipped with two blowing ports, two the blowing port one-to-one communicates with high pressure chamber, low pressure chamber.

Preferably, the pressure taking component is integrally formed by adopting a material removing mode.

Preferably, the first valve plug comprises an outer cylinder and a core sleeve, the core sleeve is inserted into the inner cavity of the outer cylinder and is in sliding connection with the inner cavity of the outer cylinder in a matched mode, a conical surface used for sealing is arranged at the top of the core sleeve, a radial through hole is formed in the upper end of the core sleeve, an end cover with a hole in the middle is connected to the lower end of the outer cylinder in a threaded mode, a spring is arranged on the end cover, and the spring applies upward thrust to the core sleeve.

Preferably, the vertical section of the high-pressure taking hole is isosceles trapezoid with large outside and small inside, and the included angle between the vertical section and the horizontal plane is 5 degrees.

Compared with the prior art, the utility model has the beneficial effects that: the pressure taking pipe is integrally processed and molded, so that the strength of the pressure taking pipe can be effectively improved, and the upper limit of the measuring range can be favorably improved. When the cleaning device is used for cleaning, the air blowing port is connected to an air source, and impurities adhered to the high-pressure taking hole and the low-pressure taking hole are blown out by utilizing strong air flow, and impurities entering the cleaning device are blown out from the first valve plug and the second valve plug at the lower end, so that the cleaning device is convenient and thorough.

Drawings

FIG. 1 is a schematic diagram of the structure of the present utility model;

FIG. 2 is a schematic cross-sectional view of the structure at A-A in FIG. 1;

FIG. 3 is a partial schematic view of the lower end of the pressure tube of the present utility model;

FIG. 4 is a schematic cross-sectional view of the structure at B-B in FIG. 3.

In the figure: 1. a pipe feeding; 2. a pressure taking component; 3. a pressure taking tube; 4. an air blowing port; 5. a high pressure chamber; 6. a low pressure chamber; 7. a first valve plug; 71. an outer cylinder; 72. a core sleeve; 73. an end cap; 74. a through hole; 75. a spring; 76. a conical surface; 8. a second valve plug; 9. a high-pressure taking hole; 10. and a low-pressure taking hole.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments.

Referring to fig. 1-4, the present utility model provides a technical solution: the utility model provides an inserted uniform velocity tube flow sensor, including conveyer pipe 1, pressure taking component 2 and pressure taking pipe 3, pressure taking pipe 3 installs in pressure taking component 2's below, pressure taking pipe 3 inserts in conveyer pipe 1, pressure taking pipe 3's horizontal cross-section is the water droplet shape, be equipped with vertical high pressure chamber 5, low pressure chamber 6 in the pressure taking pipe 3 respectively, high pressure chamber 5, low pressure chamber 6 are circular, pressure taking pipe 3's front side is equipped with a plurality of high pressure taking holes 9 that communicate with high pressure chamber 5, when using, high pressure taking hole 9 face the flow direction of fluid, the vertical cross section of the high-pressure taking hole 9 is isosceles trapezoid with large outside and small inside and has an included angle of 5 degrees with the horizontal plane, the high-pressure taking hole 9 adopts the structure, so that compensation is performed when the pressure taking pipe 3 is installed and has an inclined angle, two sides of the pressure taking pipe 3 are provided with a plurality of low-pressure taking holes 10 communicated with the low-pressure cavity 6, the pressure taking component 2 is integrally processed and formed in a material removing mode, the strength of the pressure taking pipe 3 can be effectively improved by adopting the integrated forming, and the upper limit of the measuring range is improved.

The lower extreme fixed mounting of high pressure chamber 5 has first valve to block up 7, and first valve is blocked up 7 and is opened when the pressure in high pressure chamber 5 is greater than the threshold value, and the lower extreme fixed mounting of low pressure chamber 6 has second valve to block up 8, and the structure of second valve is blocked up 8 and first valve to block up 7 is the same, and the upper portion of getting the pressure subassembly 2 is equipped with two gas blow ports 4, and two gas blow ports 4 one-to-one communicate with high pressure chamber 5, low pressure chamber 6. The first valve plug 7 comprises an outer cylinder 71 and a core sleeve 72, the core sleeve 72 is inserted into the inner cavity of the outer cylinder 71 and is in adaptive sliding connection with the inner cavity, a conical surface 76 for sealing is arranged at the top of the core sleeve 72, a radial through hole 74 is formed in the upper end of the core sleeve 72, an end cover 73 with a hole in the middle is screwed at the lower end of the outer cylinder 71, a spring 75 is arranged on the end cover 73, and the spring 75 applies upward thrust to the core sleeve 72. When the air blowing port 4 is connected to the air source, the pressure in the high-pressure cavity 5 and the low-pressure cavity 6 increases rapidly, and the high-pressure cavity 5 is taken as an example for explanation, the air pressure pushes the core sleeve 72 to move downwards, the through hole 74 is communicated with the high-pressure cavity 5, and impurities and dirt in the high-pressure cavity 5 can be discharged.

Working principle: when the fluid flows through the conveying pipe 1, a pressure difference is formed between the high-pressure cavity 5 and the low-pressure cavity 6 and is used for measuring flow, and the pressure taking pipe 3 is integrally processed and molded, so that the strength of the pressure taking pipe 3 can be effectively improved, and the upper limit of the measuring range can be favorably improved. When in cleaning, the air blowing port 4 is connected to an air source, and impurities adhered to the high-pressure taking hole 9 and the low-pressure taking hole 10 are blown out by strong air flow, and impurities entering the interior are blown out from the first valve plug 7 and the second valve plug 8 at the lower end.

Although embodiments of the present utility model 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 therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an inserted uniform velocity tube flow sensor, includes conveyer pipe (1), gets and presses subassembly (2) and gets pressure pipe (3), get pressure pipe (3) and install in the below of getting pressure subassembly (2), get pressure pipe (3) and insert conveyer pipe (1) in, its characterized in that: the horizontal cross section of getting pressure pipe (3) is the water droplet shape, is equipped with vertical high pressure chamber (5), low pressure chamber (6) in getting pressure pipe (3) respectively, and high pressure chamber (5), low pressure chamber (6) are circular, get the front side of pressure pipe (3) be equipped with a plurality of with high pressure chamber (5) intercommunication high pressure get pressure hole (9), get the both sides of pressure pipe (3) be equipped with a plurality of with low pressure get pressure hole (10) of low pressure chamber (6) intercommunication, the lower extreme fixed mounting of high pressure chamber (5) has first valve to block up (7), and the pressure of first valve to block up (7) in high pressure chamber (5) is greater than threshold value time and opens, and the lower extreme fixed mounting of low pressure chamber (6) has second valve to block up (8), and the structure of second valve to block up (7) is the same, gets the upper portion of pressure subassembly (2) and is equipped with two gas blowing ports (4), two gas blowing port (4) correspond one by one with high pressure chamber (5), low pressure chamber (6).

2. A plug-in averaging tube flow sensor as defined in claim 1, wherein: the pressure taking component (2) is integrally formed by adopting a material removing mode.

3. A plug-in averaging tube flow sensor as defined in claim 1, wherein: the first valve plug (7) comprises an outer cylinder (71) and a core sleeve (72), the core sleeve (72) is inserted into the inner cavity of the outer cylinder (71) and is in sliding connection with the inner cavity in a matched mode, a conical surface (76) used for sealing is arranged at the top of the core sleeve (72), a radial through hole (74) is formed in the upper end of the core sleeve (72), an end cover (73) with a hole in the middle is connected to the lower end of the outer cylinder (71) in a threaded mode, a spring (75) is arranged on the end cover (73), and the spring (75) applies upward thrust to the core sleeve (72).

4. A plug-in averaging tube flow sensor as defined in claim 3, wherein: the vertical section of the high-pressure taking hole (9) is in an isosceles trapezoid shape with large outside and small inside, and the included angle between the vertical section and the horizontal plane is 5 degrees.