CN214010421U

CN214010421U - Thermal gas mass flow meter

Info

Publication number: CN214010421U
Application number: CN202120169782.7U
Authority: CN
Inventors: 和钰杰; 曾磊; 王钊
Original assignee: North Rock Beijing Science And Technology Co ltd
Current assignee: North Rock Beijing Science And Technology Co ltd
Priority date: 2021-01-21
Filing date: 2021-01-21
Publication date: 2021-08-20
Anticipated expiration: 2031-01-21

Abstract

The application relates to the field of gas flow detecting instruments, in particular to a thermal gas mass flowmeter, which comprises a sampling end, a first connecting pipe and a meter head, wherein a conveying pipeline is provided with an inserting hole; a support assembly is fixedly arranged between the second connecting pipe and the conveying pipeline; the supporting component comprises a supporting rod and a clamp, the clamp is sleeved on the conveying pipeline, one end of the supporting rod is rotatably connected with the second connecting pipe, and the other end of the supporting rod is fixedly connected with the outer wall of the clamp. This application has the effect that promotes measurement accuracy.

Description

Thermal gas mass flow meter

Technical Field

The application relates to the field of gas flow detecting instruments, in particular to a thermal gas mass flow meter.

Background

At present, a thermal gas mass flowmeter is a novel instrument for measuring and controlling gas mass flow, is designed based on the thermal diffusion (heat conduction) principle, adopts a constant temperature difference method to accurately measure gas, and can be applied to industrial departments such as petroleum, chemical industry, steel, metallurgy, electric power, light industry, medicine, environmental protection and the like to monitor gas flow.

Typical thermal gas mass flowmeters are most used in plug-in applications. The plug-in flowmeter comprises a sampling end, a connecting pipe and a meter head; the gauge outfit communicates with the one end of connecting pipe, and the sampling end is connected to the other end of connecting pipe. When the pipeline opening device is used, an opening is formed in a pipeline to be detected, then the sampling end head is inserted into the pipeline and welded at the insertion position of the opening, and then measurement can be carried out. However, when the pipe wall of the detection pipeline is thin, after long-time use, the welded joint at the insertion position of the opening is easy to loosen, so that the flowmeter is easy to shake in the pipeline, and the measurement accuracy is reduced.

With respect to the related art in the above, the inventors consider that there is a drawback that the flow meter is liable to shake, which leads to a reduction in measurement accuracy.

SUMMERY OF THE UTILITY MODEL

In order to promote the measuring precision, this application provides a hot type gas mass flow meter.

The application provides a hot type gas mass flow meter adopts following technical scheme:

a thermal gas mass flowmeter comprises a sampling end, a first connecting pipe and a meter head, wherein a conveying pipeline is provided with an inserting hole, the sampling end is communicated with one end of the first connecting pipe, the first connecting pipe is in inserting fit with the inserting hole, and a second connecting pipe is communicated between the other end of the first connecting pipe and the meter head; a supporting component is fixedly arranged between the second connecting pipe and the conveying pipeline.

Through adopting above-mentioned technical scheme, supporting component plays the effect of auxiliary stay to the flowmeter between transportation pipeline and second connecting pipe for the stability of being connected between flowmeter and the transportation pipeline is better, has reduced rocking of flowmeter when measuring, has promoted measuring precision.

Optionally, the supporting component comprises a supporting rod and a clamp, the clamp is sleeved on the conveying pipeline, one end of the supporting rod is rotatably connected with the second connecting pipe, and the other end of the supporting rod is fixedly connected with the outer wall of the clamp.

Through adopting above-mentioned technical scheme, the clamp installation is convenient with the dismantlement, and the clamp is better with tubulose transport pipe's stability of being connected simultaneously, and the bracing piece rotates with the second connecting pipe to be connected, has made things convenient for the position of regulation clamp on transport pipe, and the installation and the dismantlement of being convenient for have promoted supporting component's convenience.

Optionally, the top end of the first connecting pipe is connected with a ball valve, the input end of the ball valve is communicated with the top end of the first connecting pipe, the bottom end of the second connecting pipe at the output end of the ball valve is detachably connected, and the top end of the second connecting pipe is communicated with the gauge outfit.

Through adopting above-mentioned technical scheme, when the gauge outfit goes wrong, close the ball valve and make the ball valve seal, just can change the gauge outfit under the gaseous condition of carrying in the transportation pipeline that does not stop, promoted flowmeter's practicality and convenience.

Optionally, the outer wall of the output end of the ball valve is provided with threads, the second connecting pipe is in plug-in fit with the output end of the ball valve, and the outer wall of the output end of the ball valve is screwed with a fastening nut.

Through adopting above-mentioned technical scheme, fastening nut connects on the outer wall of ball valve output soon, can strengthen the joint strength of second connecting pipe and ball valve output grafting department for the second connecting pipe is more stable with the connection of enlightening, has promoted the stability when flowmeter measures.

Optionally, the outer wall of the connecting pipe is fixedly provided with a mounting pipe along the radial direction, the mounting pipe and the insertion hole are coaxially arranged, and the bottom end of the first connecting pipe is inserted and matched with the inner cavity of the mounting pipe.

Through adopting above-mentioned technical scheme, first connecting pipe is pegged graft with the installation pipe and is cooperated, and the inner chamber of installation pipe is contradicted with the outer wall of first connecting pipe, and the installation pipe plays the effect of support to first connecting pipe for first supporting pipe can not take place the slope, has strengthened flowmeter's stability.

Optionally, a sealing sleeve is coaxially sleeved on the first connecting pipe, the top end of the sealing sleeve is closed, the bottom end of the sealing sleeve is open, the mounting pipe can be inserted into the inner cavity of the sealing sleeve at the bottom of the sealing sleeve, and the bottom of the sealing sleeve is fixedly connected with the outer wall of the conveying pipeline.

Through adopting above-mentioned technical scheme, the installation pipe is pegged graft with sealed sleeve pipe, and the top of installation pipe can be contradicted at sealed sleeve pipe's inside roof for the installation pipe is sealed with the grafting department of head rod, has reduced the probability that the top of the interior gas of transportation pipeline through the installation pipe was revealed.

Optionally, a circle of sealing gasket is fixedly arranged on the inner wall of the sealing sleeve on the connecting pipe, and when the mounting pipe is inserted into the inner cavity of the sealing sleeve, the inner side of the sealing gasket is abutted against and attached to the side wall of the mounting pipe.

By adopting the technical scheme, the sealing gasket can enhance the sealing property between the sealing sleeve and the mounting pipe and reduce the leakage of gas; meanwhile, the friction force between the inner cavity of the sealing sleeve and the mounting pipe is increased by the sealing gasket, so that the stability of connection between the sealing sleeve and the mounting pipe is better, and the stability of the flowmeter is improved.

Optionally, the support assemblies are provided with two groups, and the two groups of support assemblies are symmetrically arranged around the second connecting pipe.

Through adopting above-mentioned technical scheme, supporting component is provided with two sets ofly for the both sides office of flowmeter can receive the support, has further strengthened the stability of flowmeter when measuring.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the supporting assembly plays a role in auxiliary supporting for the flowmeter between the conveying pipeline and the second connecting pipe, so that the connection stability between the flowmeter and the conveying pipeline is better, the shaking of the flowmeter during measurement is reduced, and the measurement precision is improved;

2. when the meter head has a problem, the ball valve is closed to seal the ball valve, so that the meter head can be replaced under the condition of not stopping gas delivery in the delivery pipeline, and the practicability and convenience of the flowmeter are improved;

3. the mounting pipe is inserted into the sealing sleeve, and the top end of the mounting pipe can abut against the inner top wall of the sealing sleeve; the sealing gasket can enhance the sealing property between the sealing sleeve and the mounting pipe and reduce the leakage of gas; meanwhile, the friction force between the inner cavity of the sealing sleeve and the mounting pipe is increased by the sealing gasket, so that the stability of connection between the sealing sleeve and the mounting pipe is better, and the stability of the flowmeter is improved.

Drawings

FIG. 1 is an overall schematic view of a flow meter mounted on a transport pipeline in an embodiment of the application;

FIG. 2 is a cross-sectional view of the connection of the flow meter to the jack hole of the transport pipe in an embodiment of the present application;

fig. 3 is a schematic diagram of an exploded structure of the flow meter in the embodiment of the present application.

Description of reference numerals: 1. a transport pipeline; 11. inserting holes; 12. installing a pipe; 2. a gauge head; 21. a second connecting pipe; 3. a first connecting pipe; 31. sealing the sleeve; 32. a gasket; 4. sampling an end head; 5. a ball valve; 51. fastening a nut; 6. a support assembly; 61. a support bar; 62. and (5) clamping a hoop.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses hot type gas mass flowmeter, refer to fig. 1 and 2, it includes gauge outfit 2, second connecting pipe 21, ball valve 5, first connecting pipe 3 and sampling end 4. Gauge outfit 2 communicates with the one end of second connecting pipe 21, and the one end of second connecting pipe 21 can be dismantled with the output of ball valve 5 and be connected, and the input of ball valve 5 communicates with the top end of first connecting pipe 3, and sampling end 4 communicates with the bottom of first connecting pipe 3. The jack 11 has been seted up on the outer wall of transport pipe way 1, and first connecting pipe 3 cooperates with the jack 11 grafting, and sampling end 4 is located transport pipe way 1 for gas detects in getting into gauge outfit 2 through first connecting pipe 3, ball valve 5 and second connecting pipe 21 in proper order. Can dismantle between second connecting pipe 21 and the transportation pipeline 1 and be connected with supporting component 6, supporting component 6 can carry out the auxiliary stay between transportation pipeline 1 and flowmeter, and the stability of reinforcing flowmeter when measuring has improved the detection precision.

Referring to fig. 1 and 2, the support assembly 6 includes a support rod 61 and a clamp 62, the clamp 62 is sleeved on the transportation pipeline 1 and fastened by a bolt, one end of the support rod 61 is rotatably connected with the outer wall of the second connection pipe 21 by a hinge seat, and the hinge seat is welded on the outer wall of the second connection pipe 21, so that the support rod 61 can rotate in the vertical direction; the other end of the support rod 61 is welded and fixed with the outer wall of the clamp 62. The supporting components 6 are provided with two groups, two sides of the second connecting pipe 21 are provided with one group, and the two groups of supporting components 6 are symmetrically arranged relative to the second connecting pipe 21.

Referring to fig. 1 and 3, the second connecting pipe 21 is integrally formed with the gauge head 2; the outer wall of the output end of the ball valve 5 is provided with threads, and the bottom end of the second connecting pipe 21 can be inserted into the inner cavity of the output end of the ball valve 5; the outer wall of the output end of the ball valve 5 is screwed with a fastening nut 51 for reinforcing the joint of the second connecting pipe 21 and the output end of the ball valve 5.

Referring to fig. 2 and 3, the input end of the ball valve 5 is welded and fixed to the top end of the first connecting pipe 3, the outer wall of the transportation pipeline 1 is fixedly provided with a mounting pipe 12 along the radial direction, one end of the mounting pipe 12 is welded to the outer wall of the transportation pipeline 1, the mounting pipe 12 is coaxially arranged with the insertion hole 11, and the first connecting pipe 3 is in insertion fit with the inner cavity of the mounting pipe 12. The first connecting pipe 3 is sleeved with a coaxial sealing sleeve 31, and the top end of the sealing sleeve 31 is closed and welded with the outer wall of the first connecting pipe 3. The bottom opening of the sealing sleeve 31, the mounting tube 12 is in plug fit with the inner cavity of the sealing sleeve 31; the inner chamber of sealing sleeve 31 bonds and has the sealed pad 32 of round of rubber material, and when installation pipe 12 and sealing sleeve 31 pegged graft the cooperation, the lateral wall of sealed pad 32 contradicts the outer wall of installation pipe 12 to seal the junction of first connecting pipe 3 and installation pipe 12. The bottom end of the sealing sleeve 31 is welded and fixed with the outer wall of the transportation pipeline 1.

The implementation principle of the thermal gas mass flow meter in the embodiment of the application is as follows: when the ball valve is installed, the bottom end of the second connecting pipe 21 is inserted into the inner cavity of the output end of the ball valve 5, and the fastening nut 51 is screwed in, so that the second connecting pipe 21 is stably connected with the first ball valve 5. The sampling tip 4 is then inserted into the transport pipe 1 along the mounting tube 12 and the insertion hole 11 such that the sampling tip 4 is located inside the transport pipe 1; the mounting tube 12 is inserted into the sealing sleeve 31 at the same time as the first connecting tube 3 is inserted into the mounting tube 12. When the top end of the installation tube 12 abuts against the inner bottom wall of the sealing sleeve 31, the bottom end of the sealing sleeve 31 abuts against the outer wall of the transportation pipeline 1, and the bottom end of the sealing sleeve 31 is welded and fixed with the outer wall of the transportation pipeline 1.

Then the support bar 61 is rotated to make the clamp 62 on both sides of the second connecting pipe 21 symmetrical, the clamp 62 is sleeved with the transport pipe 1, and then the fastening bolt on the clamp 62 is screwed to fix the clamp 62 with the transport pipe 1. The flowmeter is the whole that table head 2, second connecting pipe 21, ball valve 5, first connecting pipe 3 and sampling end 4 connect into, and supporting component 6 plays the effect of auxiliary stay to the flowmeter for the flowmeter can be more stable when installing the measurement on transportation pipeline 1, has reduced the probability that the flowmeter rocked, and then has promoted measuring precision.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A thermal gas mass flow meter characterized by: the sampling device comprises a sampling end (4), a first connecting pipe (3) and a gauge outfit (2), wherein a splicing hole (11) is formed in a conveying pipeline (1), the sampling end (4) is communicated with one end of the first connecting pipe (3), the first connecting pipe (3) is spliced and matched with the splicing hole (11), and a second connecting pipe (21) is communicated between the other end of the first connecting pipe (3) and the gauge outfit (2); a supporting component (6) is fixedly arranged between the second connecting pipe (21) and the conveying pipeline (1).

2. The thermal gas mass flow meter according to claim 1, characterized in that: support assembly (6) include bracing piece (61) and clamp (62), and clamp (62) cover is established on transportation pipeline (1), and the one end and second connecting pipe (21) of bracing piece (61) rotate to be connected, the other end and the outer wall fixed connection of clamp (62) of bracing piece (61).

3. The thermal gas mass flow meter according to claim 1, characterized in that: the top of first connecting pipe (3) is connected with ball valve (5), and the input of ball valve (5) and the top intercommunication of first connecting pipe (3), the connection can be dismantled to the bottom of the output second connecting pipe (21) of ball valve (5), and the top and gauge outfit (2) of second connecting pipe (21) communicate.

4. The thermal gas mass flow meter according to claim 3, characterized in that: the outer wall of the output end of the ball valve (5) is provided with threads, the second connecting pipe (21) is matched with the output end of the ball valve (5) in an inserting mode, and the outer wall of the output end of the ball valve (5) is connected with a fastening nut (51) in a rotating mode.

5. The thermal gas mass flow meter according to claim 1, characterized in that: the outer wall of the connecting pipe is fixedly provided with a mounting pipe (12) along the radial direction, the mounting pipe (12) and the plug hole (11) are coaxially arranged, and the bottom end of the first connecting pipe (3) is in plug fit with the inner cavity of the mounting pipe (12).

6. The thermal gas mass flow meter of claim 5, wherein: the sealing sleeve (31) is coaxially sleeved on the first connecting pipe (3), the top end of the sealing sleeve (31) is closed, the bottom end of the sealing sleeve is open, the mounting pipe (12) can be inserted into the inner cavity of the sealing sleeve (31) at the bottom of the sealing sleeve (31), and the bottom of the sealing sleeve (31) is fixedly connected with the outer wall of the conveying pipeline (1).

7. The thermal gas mass flow meter according to claim 6, characterized in that: the inner wall of the sealing sleeve (31) on the connecting pipe is fixedly provided with a circle of sealing gasket (32), and when the mounting pipe (12) is inserted into the inner cavity of the sealing sleeve (31), the inner side of the sealing gasket (32) is abutted and attached to the side wall of the mounting pipe (12).

8. The thermal gas mass flow meter according to claim 2, characterized in that: the two groups of supporting components (6) are arranged, and the two groups of supporting components (6) are symmetrically arranged relative to the second connecting pipe (21).