CN219434156U

CN219434156U - Thermal mass flowmeter with adjustable measuring tube length

Info

Publication number: CN219434156U
Application number: CN202320431481.6U
Authority: CN
Inventors: 雷鸣; 林炜; 车沿海; 苏艳华
Original assignee: Chengde Hengwei Electrical Equipment Manufacturing Co ltd
Current assignee: Chengde Hengwei Electrical Equipment Manufacturing Co ltd
Priority date: 2023-03-09
Filing date: 2023-03-09
Publication date: 2023-07-28
Anticipated expiration: 2033-03-09

Abstract

The utility model discloses a thermal mass flowmeter with an adjustable measuring tube length, which comprises a flowmeter head, wherein a flowmeter measuring tube is arranged below the flowmeter head, scales are arranged on the outer surface of the flowmeter measuring tube, a fixed tube is arranged outside the flowmeter measuring tube, a connecting threaded tube is arranged below the fixed tube, a welding pipeline is arranged below the connecting threaded tube, a fluid pipeline is arranged below the welding pipeline, fixing bolts are arranged on two sides of the fixed tube, and a connecting bearing is arranged inside the connecting threaded tube. This adjustable survey buret length's thermal type mass flowmeter, survey buret through the flowmeter and remove in the inside of fixed pipe and welded tube, rethread rotates fixing bolt and promotes movable block and anti-skidding rubber pad and remove and survey buret with the flowmeter fixed, and then realizes adjusting the length of buret survey buret in the fluid tube to this thermal type mass flowmeter uses on the fluid tube of different diameters.

Description

Thermal mass flowmeter with adjustable measuring tube length

Technical Field

The utility model relates to the technical field of thermal mass flow meters, in particular to a thermal mass flow meter with an adjustable measuring tube length.

Background

The thermal flowmeter adopts a thermal diffusion principle, the thermal diffusion technology is a technology which has excellent performance and high reliability under severe conditions, when two temperature sensors are placed in a medium, one of the two temperature sensors is heated to a temperature above the ambient temperature, the other temperature sensor is used for sensing the increase of the flow rate of the medium temperature medium, the heat taken away by the medium is increased, the temperature difference of the two temperature sensors changes along with the change of the flow rate of the medium, and according to the proportional relation between the temperature difference and the flow rate of the medium, the flow Q thermal flowmeter of fluid can be obtained, most of the thermal flowmeter is used for measuring gas, and only a small amount of the thermal flowmeter is used for measuring tiny liquid flow.

Chinese authorized publication No. CN208109198U discloses a thermal type gas mass flowmeter, which relates to the field of mechanical equipment, and a temperature sensor and a speed sensor of the thermal type gas mass flowmeter can adhere to the flow rate and temperature of gas in a pipeline, and intuitively react through a data display. The depth of the temperature sensor and the speed sensor extending into the pipeline can also be accurately measured by inserting a depth marking ring. After the valve is opened, gas is put into the upper part of the sleeve, so that the flow direction of the gas in the pipeline can be measured through the flow direction sign, and the measuring accuracy is improved.

In the above patent, the temperature sensor and the gauge rod cannot move in the sleeve, but the diameters of the pipelines are greatly different, when the thermal type gas mass flowmeter is used in the pipeline with larger diameter, the temperature sensor cannot reach a proper position, so that the accuracy of the thermal type gas mass flowmeter can be affected, the thermal type gas mass flowmeter can only be used in the pipeline with specific diameter, and the application range of the thermal type gas mass flowmeter is limited.

Disclosure of Invention

The utility model aims to provide a thermal mass flowmeter with an adjustable measuring tube length, which aims to solve the problems that in the prior art, a temperature sensor and a meter rod in the patent cannot move in a sleeve, and the diameters of pipelines are greatly different, and when the thermal mass flowmeter is used in a pipeline with a larger diameter, the temperature sensor cannot reach a proper position, so that the accuracy of the thermal mass flowmeter can be influenced, the thermal mass flowmeter can only be used in a pipeline with a specific diameter, and the application range of the thermal mass flowmeter is limited.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a thermal type mass flowmeter of adjustable survey buret length, includes the flowmeter gauge outfit, flowmeter survey buret is installed to flowmeter gauge outfit's below, flowmeter survey buret's surface is provided with the scale, flowmeter survey buret's externally mounted has the fixed pipe, connecting screw thread pipe is installed to the below of fixed pipe, welded pipe is installed to the below of connecting screw thread pipe, fluid pipeline is installed to the below of welded pipe, fixing bolt is installed to the both sides of fixed pipe, connecting bearing is installed to the internally mounted of connecting screw thread pipe, sealing gasket is installed to connecting bearing's below, temperature sensor is installed to flowmeter survey buret's below;

the movable groove is arranged on two sides of the inner wall of the fixed pipe, the movable block is movably arranged in the movable groove, an anti-slip rubber pad is arranged on one side, close to the measuring pipe of the flowmeter, of the movable block, the movable groove is connected in the movable block, and a connector is movably arranged in the movable groove.

Preferably, the flowmeter measuring tube penetrates through the inside of the fixed tube, and the flowmeter measuring tube is movably connected with the fixed tube.

Preferably, the fixed pipe is in threaded connection with the fixing bolt, the fixing bolt is in integral fixed connection with the connector, the shape size of the connector is slightly smaller than the shape size of the inside of the connecting movable groove, the fixing bolt is in movable connection with the movable block through the connector and the connecting movable groove, the anti-slip rubber pad is tightly attached to the measuring pipe of the flowmeter, and meanwhile, the shape size part of the movable block is matched with the shape size of the inside of the containing movable groove.

Preferably, the welded pipe is screwed with the connecting threaded pipe, and the fluid pipe is welded with the welded pipe.

Preferably, the connecting threaded pipe is movably connected with the fixed pipe through a connecting bearing, the sealing gasket is tightly attached to the fixed pipe, the sealing gasket is tightly attached to the connecting threaded pipe, and meanwhile the sealing gasket is tightly attached to the welding pipeline.

Preferably, the welded pipe is further provided with:

the mounting groove is formed in the inner wall of the welding pipeline, and an O-shaped sealing ring is mounted in the mounting groove.

Preferably, the flowmeter measuring tube penetrates through the welding pipeline, the flowmeter measuring tube is tightly attached to the O-shaped sealing ring, and the flowmeter measuring tube moves in the welding pipeline.

Compared with the prior art, the utility model provides the thermal mass flowmeter with the adjustable measuring tube length, which has the following beneficial effects: this adjustable survey buret length's thermal type mass flowmeter, survey buret through the flowmeter and remove in the inside of fixed pipe and welded tube, rethread rotates fixing bolt and promotes movable block and anti-skidding rubber pad and remove and survey buret with the flowmeter fixed, and then realizes adjusting the length of buret survey buret in the fluid tube to this thermal type mass flowmeter uses on the fluid tube of different diameters.

Drawings

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

FIG. 2 is a schematic cross-sectional view of the present utility model;

FIG. 3 is a schematic view of the internal structure of the flowmeter measurement tube, stationary tube, and welded pipe of the present utility model;

FIG. 4 is an enlarged schematic view of the structure of FIG. 3A according to the present utility model;

fig. 5 is an enlarged view of the structure of fig. 3B according to the present utility model.

In the figure: 1. a flowmeter head; 2. a flowmeter measuring tube; 3. a fixed tube; 4. connecting a threaded pipe; 5. a fluid conduit; 6. welding a pipeline; 7. a scale; 8. a temperature sensor; 9. a fixing bolt; 10. connecting a bearing; 11. a sealing gasket; 12. accommodating the movable groove; 13. a connector; 14. connecting the movable groove; 15. an anti-slip rubber pad; 16. a mounting groove; 17. an O-shaped sealing ring; 18. a movable block.

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. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, a thermal mass flowmeter with adjustable measuring tube length comprises a flowmeter head 1, wherein a flowmeter measuring tube 2 is arranged below the flowmeter head 1, scales 7 are arranged on the outer surface of the flowmeter measuring tube 2, and a fixed tube 3 is arranged outside the flowmeter measuring tube 2; the flowmeter measuring tube 2 penetrates through the fixed tube 3, the flowmeter measuring tube 2 is movably connected with the fixed tube 3, the connecting threaded tube 4 is arranged below the fixed tube 3, the welding pipeline 6 is arranged below the connecting threaded tube 4, and the fluid pipeline 5 is arranged below the welding pipeline 6; the welding pipeline 6 is in threaded connection with the connecting threaded pipe 4, the fluid pipeline 5 is in welded connection with the welding pipeline 6, the fixing bolts 9 are arranged on two sides of the fixing pipe 3, the connecting bearing 10 is arranged in the connecting threaded pipe 4, and the sealing gasket 11 is arranged below the connecting bearing 10; the connecting threaded pipe 4 is movably connected with the fixed pipe 3 through a connecting bearing 10, the sealing gasket 11 is tightly attached to the fixed pipe 3, the sealing gasket 11 is tightly attached to the connecting threaded pipe 4, meanwhile, the sealing gasket 11 is tightly attached to the welded pipe 6, and a temperature sensor 8 is arranged below the measuring pipe 2 of the flowmeter; the movable accommodating groove 12 is formed in two sides of the inner wall of the fixed pipe 3, a movable block 18 is movably arranged in the movable accommodating groove 12, an anti-slip rubber pad 15 is arranged on one side, close to the measuring pipe 2 of the flowmeter, of the movable block 18, a movable connecting groove 14 is formed in the movable block 18, and a connector 13 is movably arranged in the movable connecting groove 14; the fixed pipe 3 is in threaded connection with the fixed bolt 9, the fixed bolt 9 is integrally and fixedly connected with the connector 13, the shape and size of the connector 13 are slightly smaller than those of the inside of the connecting movable groove 14, the fixed bolt 9 is movably connected with the movable block 18 through the connector 13 and the connecting movable groove 14, the anti-slip rubber pad 15 is tightly attached to the measuring pipe 2 of the flowmeter, and meanwhile, the shape and size of the movable block 18 are partially matched with those of the inside of the containing movable groove 12; through the inside removal of flowmeter survey buret 2 at fixed pipe 3 and welded tube 6, rethread rotates fixed bolt 9 and promotes movable block 18 and anti-skidding rubber pad 15 and remove flowmeter survey buret 2 fixedly, and then realizes adjusting the length of flowmeter survey buret 2 in fluid pipe 5 to this thermal mass flowmeter uses on the fluid pipe 5 of different diameters.

Referring to fig. 1, 2, 3 and 5, a thermal mass flowmeter with adjustable measuring tube length includes a mounting groove 16, which is formed on the inner wall of a welded pipe 6, and an O-ring 17 is mounted in the mounting groove 16; the flow meter measuring tube 2 penetrates through the welding pipeline 6, the flow meter measuring tube 2 is tightly attached to the O-shaped sealing ring 17, and the flow meter measuring tube 2 moves in the welding pipeline 6.

Working principle: in the thermal mass flowmeter using the adjustable measuring tube length, firstly, a hole is drilled on the outer surface of a fluid pipeline 5, then a welding pipeline 6 is inserted into the hole, the welding pipeline 6 is fixed on the fluid pipeline 5 in a welding mode and the like, secondly, a connecting threaded pipe 4 is installed with the welding pipeline 6 through threads, secondly, a flowmeter measuring tube 2 is moved up and down, a temperature sensor 8 below the flowmeter measuring tube 2 is adjusted to a proper position through a scale 7 and the pipe diameter of the fluid pipeline 5, secondly, a fixing bolt 9 is screwed, a movable block 18 and an anti-slip rubber pad 15 are pushed to approach the flowmeter measuring tube 2, the anti-slip rubber pad 15 is tightly attached to the flowmeter measuring tube 2, further, the fixing of the flowmeter measuring tube 2 into the pipe 3 is achieved, and then an O-shaped sealing ring 17 ensures the connection tightness between the flowmeter measuring tube 2 and an installation groove 16, and finally, flow of the fluid pipeline 5 can be recorded.

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. A thermal mass flow meter with an adjustable length of measurement tube, comprising:

flowmeter gauge outfit (1), flowmeter measuring tube (2) are installed to flowmeter gauge outfit (1)'s below, flowmeter measuring tube (2)'s surface is provided with scale (7), flowmeter measuring tube (2)'s externally mounted has fixed pipe (3), connecting screwed pipe (4) are installed to fixed pipe (3)'s below, welded pipe (6) are installed to connecting screwed pipe (4)'s below, fluid pipe (5) are installed to welded pipe (6)'s below, fixing bolt (9) are installed to fixed pipe (3)'s both sides, connecting bearing (10) are installed to connecting screwed pipe (4) internally mounted, sealing washer (11) are installed to connecting bearing (10)'s below, temperature sensor (8) are installed to flowmeter measuring tube (2)'s below;

the anti-slip movable groove (12) is formed in two sides of the inner wall of the fixed pipe (3), a movable block (18) is movably mounted in the movable groove (12), an anti-slip rubber pad (15) is mounted on one side, close to the measuring pipe (2) of the flowmeter, of the movable block (18), a connecting movable groove (14) is formed in the movable block (18), and a connector (13) is movably mounted in the connecting movable groove (14).

2. A thermal mass flowmeter with adjustable measuring tube length according to claim 1, characterized in that the flowmeter measuring tube (2) penetrates the inside of the fixed tube (3), and the flowmeter measuring tube (2) is movably connected with the fixed tube (3).

3. The thermal mass flowmeter with the adjustable measuring tube length according to claim 1, wherein the fixed tube (3) is in threaded connection with the fixed bolt (9), the fixed bolt (9) is fixedly connected with the connector (13) in an integrated mode, the shape size of the connector (13) is slightly smaller than the shape size of the inside of the connecting movable groove (14), the fixed bolt (9) is movably connected with the movable block (18) through the connector (13) and the connecting movable groove (14), the anti-skid rubber pad (15) is tightly attached to the flowmeter measuring tube (2), and the shape size of the movable block (18) is partially matched with the shape size of the inside of the accommodating movable groove (12).

4. A thermal mass flow meter with adjustable measuring tube length according to claim 1, characterized in that the welded pipe (6) is screwed with the connecting threaded pipe (4) and the fluid pipe (5) is welded with the welded pipe (6).

5. The thermal mass flowmeter with the adjustable measuring tube length according to claim 1, wherein the connecting threaded tube (4) is movably connected with the fixed tube (3) through a connecting bearing (10), the sealing gasket (11) is tightly attached to the fixed tube (3), the sealing gasket (11) is tightly attached to the connecting threaded tube (4), and the sealing gasket (11) is tightly attached to the welded pipe (6).

6. A thermal mass flow meter with adjustable measuring tube length according to claim 1, characterized in that the welded pipe (6) is further provided with:

the installation groove (16) is formed in the inner wall of the welding pipeline (6), and an O-shaped sealing ring (17) is installed in the installation groove (16).

7. A thermal mass flow meter with adjustable measuring tube length according to claim 6, characterized in that the meter measuring tube (2) penetrates inside the welded pipe (6), and that the meter measuring tube (2) is tightly attached to the O-ring (17), and that the meter measuring tube (2) is realized to move inside the welded pipe (6).