CN218973747U

CN218973747U - Gas flowmeter test equipment

Info

Publication number: CN218973747U
Application number: CN202223353015.5U
Authority: CN
Inventors: 李永雷
Original assignee: Tianjin Yiman Instrument Technology Co ltd
Current assignee: Tianjin Yiman Instrument Technology Co ltd
Priority date: 2022-12-14
Filing date: 2022-12-14
Publication date: 2023-05-05
Anticipated expiration: 2032-12-14

Abstract

The utility model provides a gas flowmeter testing device, and belongs to the technical field of gas flowmeters. The gas flow meter testing apparatus includes a testing assembly and a support assembly. The testing component comprises a base part, an inflating part and a moving part, wherein the inflating part is arranged on the base part, the moving part is arranged on the inflating part, when the testing component is used, when gas flowmeter bodies of different types are required to be subjected to fixed testing, the adjusting sleeve can be moved left and right, and can be lengthened and shortened in the supporting plate, so that the supporting surface can be adjusted, the supporting rod can be moved up and down, the supporting plate can be driven to be adjusted in height, the supporting surface of the supporting plate can be adjusted in size and height, the gas flowmeter bodies of different types can be supported and fixed, and the testing efficiency of the gas flowmeter bodies is improved.

Description

Gas flowmeter test equipment

Technical Field

The utility model relates to the field of gas flow meters, in particular to a gas flow meter testing device.

Background

The gas flowmeter is one of the large instruments in process automation instrument and device, which is widely used in various fields of metallurgy, electric power, coal, chemical industry, petroleum, traffic, architecture, light spinning, food, medicine, agriculture, environmental protection, daily life of people, etc., is an important tool for developing industrial and agricultural production, saving energy, improving product quality, improving economic benefit and management level, in process automation instrument and device, the flow instrument has two functions, namely a detecting instrument of process automation control system and a total amount meter for measuring material amount, the name of flowmeter is flowmeter, the national science and technology noumenon validation committee defines the flowmeter as an instrument for indicating measured flow and total amount of fluid in selected time intervals, the flowmeter is simply one for measuring fluid flow in pipelines or open channels, and after the gas flowmeter is produced, the sealing measurement is needed.

Through retrieving, chinese patent No. CN201920166657.3 discloses a gas flowmeter leakproofness measuring device, relates to gas flowmeter and detects technical field, and it includes the casing, the spout has been seted up to shells inner wall's lower surface, sliding connection has the slider in the spout, the upper surface fixedly connected with fixed plate of slider, the left and right sides of fixed plate upper surface is all fixedly connected with stopper. This gas flowmeter leakproofness measuring device for the right-hand member of pipeline inserts the left end of gas flowmeter body through setting up electric putter, and electric putter continuously shortens simultaneously, and the pipeline can drive gas flowmeter body, fixed plate and slider and move to the right in the spout, makes like this both ends can both seal about the gas flowmeter body, then adds clear water in to the casing again, under the circumstances that gas flowmeter body was inflated by inflation mechanism, observes whether the clear water in the casing has the bubble, so detects the gas tightness of gas flowmeter body, thereby has reduced the degree of difficulty of measuring work operation.

However, the above scheme still has defects, the size of the supporting surface of the fixed plate is fixed, and the height of the sliding block is fixed, so that the fixed plate cannot adapt to gas flow meters of different types, namely, the applicability of the fixed plate is poor, when the gas flow meters of other types are required to be subjected to tightness test, the fixed plate is required to be replaced, the operation is excessively time-consuming, and the test efficiency of the gas flow meters is reduced.

Disclosure of Invention

In order to make up for the defects, the utility model provides a gas flowmeter testing device, which aims to improve the problems that the size of a supporting surface of a fixed plate is fixed and the height of a sliding block is fixed, so that the fixed plate cannot adapt to different types of gas flowmeters, namely the applicability of the fixed plate is poor.

The utility model is realized in the following way:

the utility model provides a gas flowmeter testing device, which comprises a testing component and a supporting component.

The test assembly comprises a base part, an inflation part and a moving part, wherein the inflation part is arranged on the base part, and the moving part is arranged on the inflation part;

the support assembly comprises a first adjusting part, a second adjusting part and a resetting part, wherein the first adjusting part is arranged on the base part, the second adjusting part is arranged below the first adjusting part, and the resetting part is arranged below the second adjusting part.

In one embodiment of the utility model, the base part comprises a shell, a gas flow meter body and a sealing plug, wherein the gas flow meter body is arranged in the shell, the sealing plug is arranged on the right side of the inside of the shell, and the sealing plug corresponds to the position of the gas flow meter body.

In one embodiment of the utility model, the base part further comprises a drain pipe, the drain pipe is installed at the right side of the housing near the lower part, and a valve is installed on the drain pipe.

In one embodiment of the present utility model, the air charging portion includes an air charging mechanism, a pipe and a sealing pad, the air charging mechanism is disposed on the left side of the housing, the pipe is mounted on the output end of the air charging mechanism, an opening is disposed on the left side of the housing, the right end of the pipe extends to the inside of the housing through the opening, the right end of the pipe corresponds to the position of the gas flowmeter body, and the sealing pad is mounted on the right end of the pipe.

In one embodiment of the present utility model, the inflating part further includes an organ hose, the organ hose is sleeved on the right side of the surface of the pipe, and the left and right ends of the organ hose are respectively installed on the left side of the inner wall of the housing and the right side of the surface of the pipe.

In one embodiment of the utility model, the moving part comprises a moving plate and an electric cylinder, the moving plate is arranged on the right side of the inflating mechanism and is arranged on the pipeline, the electric cylinder is arranged on the right side of the moving plate close to the lower part, and the power end of the electric cylinder is connected with the shell.

In one embodiment of the utility model, the moving part further comprises a sliding rod and a sliding sleeve, a sliding hole is formed in the moving plate, the sliding sleeve is arranged above the inflation mechanism, the sliding rod is arranged at the position, close to the upper side, of the left side of the shell, the left end of the sliding rod sequentially slides through the sliding hole and the sliding sleeve, and a limiting plate is arranged on the left side, extending to the sliding sleeve, of the sliding rod.

In an embodiment of the utility model, the first adjusting part comprises a supporting plate, an adjusting sleeve, a limiting block, a T-shaped rod and a first spring, wherein the supporting plate is arranged below the gas flowmeter body, the adjusting sleeve is slidably arranged on the supporting plate near the left side and the right side, the limiting block is arranged above the adjusting sleeve near the outer side, the adjusting sleeve and the limiting block are mutually attached to the gas flowmeter body, the T-shaped rod is arranged at the position, near the inner side, of the front side of the adjusting sleeve, a jack is formed in the adjusting sleeve, a plurality of slots are formed in the supporting plate, the inner end of the T-shaped rod extends to the inner part of one of the slots through the jack, the first spring is connected between the T-shaped rod and the adjusting sleeve, and the first spring is sleeved on the outer side of the T-shaped rod.

In an embodiment of the utility model, the second adjusting part comprises a supporting rod, a supporting sleeve, a rotating wheel and a screw rod, wherein the supporting rod is installed in the middle of the lower part of the supporting plate, the supporting sleeve is arranged below the supporting rod, the supporting rod is slidably arranged in the supporting sleeve, the rotating wheel is arranged at the position, close to the upper part, of the front side of the supporting sleeve, the screw rod is installed at the rear side of the rotating wheel, a screw hole matched with the screw rod is formed in the supporting sleeve, a plurality of fixing grooves are formed in the supporting rod, and rear threads of the screw rod penetrate through the screw hole and extend into one of the fixing grooves.

In one embodiment of the utility model, the reset portion comprises a mounting plate, a sliding block and a second spring, wherein the mounting plate is mounted at the bottom end of the supporting sleeve, the sliding block is mounted below the mounting plate, a sliding groove matched with the sliding block is formed in the bottom of the inside of the shell, the sliding block is arranged in the sliding groove in a sliding manner, the second spring is mounted on the left side of the sliding block, and the left end of the second spring is mounted on the inner wall of the sliding groove.

The beneficial effects of the utility model are as follows: when the gas flowmeter testing equipment obtained through the design is used, people place the gas flowmeter body in the limiting blocks on the two adjusting sleeves, so that the gas flowmeter body can be stably fixed on the supporting plate, then the electric cylinder is started, the electric cylinder shortens and drives the pipeline and the air charging mechanism to move rightwards through the moving plate, so that the right end of the pipeline is inserted into the left end of the gas flowmeter body, meanwhile, the electric cylinder continuously shortens, the pipeline can drive the gas flowmeter body to move rightwards, so that the mounting plate can drive the sliding block to slide rightwards in the sliding groove, the right end of the gas flowmeter body is clamped on the sealing plug, the left end and the right end of the gas flowmeter body can be sealed, then clear water is added into the shell, and under the condition that the gas flowmeter body is inflated by the air charging mechanism, whether the clear water in the shell has bubbles or not is observed, after the tightness of the gas flowmeter body is measured, clear water in the shell is discharged through the drain pipe, then the electric cylinder is started to extend, at the moment, under the action of the tensile force of the second spring, the gas flowmeter body is driven to move leftwards, so that the right end of the gas flowmeter body is separated from the sealing plug, people can conveniently take out the gas flowmeter body, when the gas flowmeter bodies of different types are required to be fixedly tested, the T-shaped rod can be pulled out to the front side, the T-shaped rod is separated from the slot, then the adjusting sleeve is moved leftwards and rightwards, so that the adjusting sleeve is extended and shortened on the supporting plate, the size of the supporting surface is adjusted, then the T-shaped rod is loosened, the T-shaped rod can be inserted into the corresponding slot under the action of the resilience force of the first spring, the position of the adjusting sleeve is fixed, then the rotating wheel is rotated, the screw is outwards rotated out of the fixing slot, and then the supporting rod is moved upwards and downwards, make it drive the backup pad and carry out altitude mixture control, remove the suitable position back, reverse rotation runner makes the screw rod revolve to inside corresponding fixed slot can fix the altitude mixture control after adjusting, and this test equipment can support and fix the gas flowmeter body of different models to the holding surface size and the altitude mixture control of backup pad, has improved the test efficiency to the gas flowmeter body.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some examples of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic perspective view of a gas flow meter testing apparatus according to an embodiment of the present utility model;

FIG. 2 is a diagram of the relationship between a base portion, an inflatable portion, and a movable portion provided by an embodiment of the present utility model;

FIG. 3 is an exploded view of a first adjustment portion according to an embodiment of the present utility model;

fig. 4 is an exploded view of a second adjusting part according to an embodiment of the present utility model;

FIG. 5 is an enlarged view of portion A of FIG. 2 provided in accordance with an embodiment of the present utility model;

fig. 6 is an enlarged view of B in fig. 3 provided in an embodiment of the present utility model.

In the figure: 100-testing the assembly; 110-a base; 111-a housing; 112-a gas flow meter body; 113-a sealing plug; 114-a drain pipe; 120-an inflatable section; 121-an inflation mechanism; 122-piping; 123-sealing gasket; 124-organ hose; 130-a moving part; 131-moving plate; 132-electric cylinder; 133-slide bar; 134-sliding sleeve; 200-a support assembly; 210-a first adjustment section; 211-a support plate; 212-adjusting sleeve; 213-limited blocks; 214-T-shaped bar; 215-a first spring; 220-a second adjustment section; 221-supporting rods; 222-supporting the sleeve; 223-turning wheel; 224-screw; 230-a reset portion; 231-mounting plates; 232-a slider; 233-second spring.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments. All other embodiments, based on the embodiments of the utility model, which are apparent to those of ordinary skill in the art without inventive faculty, are intended to be within the scope of the utility model.

Examples

Referring to fig. 1-6, the present utility model provides a technical solution: a gas flow meter testing apparatus includes a testing assembly 100 and a support assembly 200.

The supporting component 200 is arranged on the testing component 100 and is used for supporting and fixing the gas flowmeter body 112, the size and the height of the supporting surface can be adjusted, the gas flowmeter bodies 112 of different models can be easily supported and fixed, and the testing efficiency of the gas flowmeter body 112 is improved.

Referring to fig. 1 and 2, the test assembly 100 includes a base portion 110, an air charging portion 120, and a moving portion 130, the air charging portion 120 is disposed on the base portion 110, the moving portion 130 is disposed on the air charging portion 120, the base portion 110 includes a housing 111, a gas flow meter body 112, and a sealing plug 113, the gas flow meter body 112 is disposed in the housing 111, the sealing plug 113 is mounted on the right side of the housing 111, and corresponds to the position of the gas flow meter body 112, the sealing plug 113 is disposed to seal the right end of the gas flow meter body 112, the base portion 110 further includes a drain pipe 114, the drain pipe 114 is mounted on the right side of the housing 111 near the lower portion, and a valve is mounted on the drain pipe 114, after the gas flow meter body 112 is tested, the valve is rotatable to drain water in the housing 111 through the drain pipe 114, so as to facilitate the next test, the inflatable part 120 comprises an inflatable mechanism 121, a pipeline 122 and a sealing pad 123, the left side of the shell 111 is provided with the inflatable mechanism 121, the output end of the inflatable mechanism 121 is provided with the pipeline 122, the left side of the shell 111 is provided with an opening, the right end of the pipeline 122 extends to the inside of the shell 111 through the opening, the right end of the pipeline 122 corresponds to the position of the gas flowmeter body 112, the right end of the pipeline 122 is provided with the sealing pad 123, the inflatable mechanism 121 inflates the inside of the gas flowmeter body 112 through the pipeline 122 to detect the tightness of the gas flowmeter body 112, the sealing pad 123 can seal the left end of the gas flowmeter body 112 and is matched with the sealing plug 113 to ensure the tightness of the inside of the gas flowmeter body 112 during inflation, so that the test is more accurate, the inflatable part 120 also comprises an organ hose 124, the right side of the surface of the pipeline 122 is sleeved with the organ hose 124, the left and right ends of the organ hose 124 are respectively arranged at the left side of the inner wall of the shell 111 and the right side of the surface of the pipeline 122, the organ hose 124 can seal the opening of the shell 111, through which the pipeline 122 passes, so as to prevent water from leaking out of the opening during testing, the organ hose 124 can facilitate the left and right movement of the pipeline 122, the moving part 130 comprises a moving plate 131 and an electric cylinder 132, the right side of the inflating mechanism 121 is provided with the moving plate 131, the moving plate 131 is arranged on the pipeline 122, the electric cylinder 132 is arranged at the position, close to the lower side, of the right side of the moving plate 131, the power end of the electric cylinder 132 is connected with the shell 111, the electric cylinder 132 drives the pipeline 122 to move left and right through the moving plate 131, so that the pipeline 122 can move rightwards to be contacted with the gas flowmeter body 112, thereby being convenient for carry out the inflation test to the gas flowmeter body 112, the moving part 130 also comprises a slide bar 133 and a slide bar 134, the slide hole is formed in the moving plate 131, the slide bar 134 is arranged above the inflation mechanism 121, the slide bar 133 is arranged at the position, close to the upper side, of the left side of the shell 111, the left end of the slide bar 133 sequentially slides through the slide hole and the slide bar 134 and extends to the left side of the slide bar 134 to be provided with a limiting plate, through the arrangement of the slide bar 133, the moving plate 131 and the slide bar 134 can slide on the slide bar 133, thereby the moving plate 131 and the inflation mechanism 121 can be moved and limited, so as to ensure the moving track of the moving plate 131 and the inflation mechanism 121, the moving track of the moving plate 131 and the inflation mechanism 121 is more stable, and the setting of the limiting plate can prevent the slide bar 134 from being separated from the slide bar 133 when moving;

referring to fig. 2-6, the support assembly 200 includes a first adjusting portion 210, a second adjusting portion 220 and a reset portion 230, the first adjusting portion 210 is disposed on the base portion 110, the second adjusting portion 220 is disposed below the first adjusting portion 210, the reset portion 230 is disposed below the second adjusting portion 220, the first adjusting portion 210 includes a support plate 211, an adjusting sleeve 212, a limiting block 213, a T-shaped rod 214 and a first spring 215, the support plate 211 is disposed below the gas flowmeter body 112, the adjusting sleeve 212 is slidably disposed on the support plate 211 near both sides, the limiting block 213 is mounted on the adjusting sleeve 212 near the outer side, the adjusting sleeve 212 and the limiting block 213 are mutually attached to the gas flowmeter body 112, the T-shaped rod 214 is disposed on the front side of the adjusting sleeve 212 near the inner side, a plurality of inserting holes are formed on the adjusting sleeve 212, a plurality of inserting holes are formed on the support plate 211, the inner end of the T-shaped rod 214 extends to the inside of one slot through the insertion hole, a first spring 215 is connected between the T-shaped rod 214 and the adjusting sleeve 212, the first spring 215 is sleeved outside the T-shaped rod 214, the two adjusting sleeves 212 can move left and right on the supporting plate 211 so as to adjust the size of the supporting surface, the gas flowmeter bodies 112 with different widths can be supported and fixed, the T-shaped rod 214 is stably inserted into the inside of the slot under the action of the elastic force of the first spring 215 so as to fix the adjusted position of the adjusting sleeve 212 and ensure the stability of the supporting surface, the second adjusting part 220 comprises a supporting rod 221, a supporting sleeve 222, a rotating wheel 223 and a screw 224, the supporting rod 221 is arranged in the middle of the lower part of the supporting plate 211, the supporting sleeve 222 is arranged below the supporting rod 221 in a sliding way, the rotating wheel 223 is arranged in the supporting sleeve 222, the position of the front side of the supporting sleeve 222 close to the upper part, screw 224 is installed to the rear side of runner 223, offer the screw with screw 224 looks adaptation on the support sleeve 222, a plurality of fixed slots have been seted up on the bracing piece 221, and screw 224's rear end screw thread passes the screw, and extend to the inside of one of them fixed slot, slide the inside at support sleeve 222 through the bracing piece 221, can adjust the height of support, with this can support the gas flowmeter body 112 of different models, make the both ends mouth of gas flowmeter body 112 can flush with pipeline 122, insert in the inside of fixed slot through screw 224, be convenient for fix the position after bracing piece 221 adjusts, guarantee stability, reset portion 230 includes mounting panel 231, slider 232 and second spring 233, mounting panel 231 is installed to the bottom of support sleeve 222, slider 232 is installed to the below of mounting panel 231, the spout with slider 232 looks adaptation is seted up to the inside of casing 111, and slider 232 slides the inside of spout, second spring 233 is installed in the left side of slider 232, and the left end of second spring 233 is installed on the inner wall of spout, the setting of slider 232, can carry out the removal orbit to support sleeve 222 and flush with pipeline 122, insert in the inside of fixed slot through screw 224, the inside at the fixed slot, be convenient for fixing the position after the bracing piece 221 adjusts the position, guarantee stability, reset portion 230 includes mounting panel 231, slider 232, slider 122 can carry out the motion to the end, and can carry out the pipeline 122, can carry out the end-stop-motion 122, and can be more when 122, can carry out the pipeline 122, can carry out the reset, and can carry out the pipeline 122, and can be more than stable to the end 122, and can make the pipeline 122, and can be moved to the end 122, and can be moved to the right and can be moved by the 122.

Specifically, the working principle of the gas flowmeter testing device is as follows: when in use, people place the gas flowmeter body 112 in the limiting blocks 213 on the two adjusting sleeves 212, so that the gas flowmeter body 112 can be stably fixed on the supporting plate 211, then the electric cylinder 132 is started, the electric cylinder 132 shortens and drives the pipeline 122 and the inflating mechanism 121 to move rightwards through the moving plate 131, so that the right end of the pipeline 122 is inserted into the left end of the gas flowmeter body 112, meanwhile, the electric cylinder 132 continuously shortens, the pipeline 122 can drive the gas flowmeter body 112 to move rightwards, thereby the mounting plate 231 can drive the sliding block 232 to slide rightwards in the sliding groove, so that the right end of the gas flowmeter body 112 is clamped on the sealing plug 113, the left end and the right end of the gas flowmeter body 112 can be sealed, then clear water is added into the shell 111, under the condition that the gas flowmeter body 112 is inflated by the inflating mechanism 121, whether bubbles exist in the shell 111 or not is observed, after the tightness of the gas flowmeter body 112 is measured, the clean water in the housing 111 is discharged through the drain pipe 114, then the electric cylinder 132 is started to extend, at this time, under the action of the tension force of the second spring 233, the gas flowmeter body 112 is driven to move leftwards, so that the right end of the gas flowmeter body 112 is separated from the sealing plug 113, thereby facilitating the people to take out the gas flowmeter body 112, when the gas flowmeter bodies 112 with different models are required to be fixedly tested, the T-shaped rod 214 can be pulled out to the front side, so that the T-shaped rod 214 is separated from the slot, then the adjusting sleeve 212 is moved leftwards and rightwards, so that the T-shaped rod 214 is stretched and shortened on the supporting plate 211, thereby realizing the adjustment of the size of the supporting surface, then the T-shaped rod 214 is inserted into the corresponding slot under the action of the resilience force of the first spring 215, the adjusted position of the adjusting sleeve 212 is fixed, then the rotating wheel 223 is rotated, the screw 224 is rotated out of the fixing groove, then the supporting rod 221 is moved up and down, the supporting plate 211 is driven to adjust the height, after moving to a proper position, the rotating wheel 223 is rotated reversely, the screw 224 is rotated into the corresponding fixing groove to fix the adjusted height, the supporting surface size and the height of the supporting plate 211 can be adjusted by the testing equipment, the gas flowmeter body 112 with different models can be supported and fixed, and the testing efficiency of the gas flowmeter body 112 is improved.

It should be noted that, specific model specifications of the gas flow meter body 112, the inflation mechanism 121 and the electric cylinder 132 need to be determined by selecting a model according to actual specifications of the device, and a specific model selection calculation method adopts the prior art in the art, so detailed description is omitted.

The power supply of the gas flow meter body 112, the inflator 121, and the electric cylinder 132, and the principle thereof will be apparent to those skilled in the art and will not be described in detail herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, and various modifications and variations may be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A gas flow meter test apparatus comprising

2. The gas flow meter test apparatus of claim 1, wherein the base portion comprises a housing, a gas flow meter body and a sealing plug, the gas flow meter body is provided inside the housing, the sealing plug is mounted on the right side inside the housing, and the sealing plug corresponds to the position of the gas flow meter body.

3. A gas flow meter testing apparatus according to claim 2, wherein said base portion further comprises a drain pipe, said drain pipe being mounted on a right side of said housing near a lower portion, and a valve being mounted on said drain pipe.

4. The gas flowmeter testing device according to claim 2, wherein the inflating portion comprises an inflating mechanism, a pipe and a sealing gasket, the inflating mechanism is arranged on the left side of the housing, the pipe is mounted on the output end of the inflating mechanism, the left side of the housing is provided with an opening, the right end of the pipe extends to the inside of the housing through the opening, the right end of the pipe corresponds to the position of the gas flowmeter body, and the sealing gasket is mounted on the right end of the pipe.

5. The gas flow meter test apparatus of claim 4, wherein the inflatable portion further comprises an organ hose, the organ hose is sleeved on the right side of the pipe surface, and left and right ends of the organ hose are respectively mounted on the left side of the inner wall of the housing and the right side of the pipe surface.

6. A gas flow meter test apparatus as claimed in claim 4, wherein said moving part comprises a moving plate and an electric cylinder, said moving plate is provided on the right side of said air charging mechanism, and said moving plate is mounted on said pipe, said electric cylinder is mounted on the right side of said moving plate near the lower side, and the power end of said electric cylinder is connected with said housing.

7. The gas flowmeter testing device of claim 6, wherein the moving part further comprises a slide bar and a slide sleeve, a slide hole is formed in the moving plate, the slide sleeve is installed above the inflation mechanism, the slide bar is installed at the position, close to the upper side, of the left side of the shell, and the left end of the slide bar sequentially slides through the slide hole and the slide sleeve and extends to the left side of the slide sleeve to be provided with a limiting plate.

8. The gas flowmeter testing device according to claim 2, wherein the first adjusting portion comprises a supporting plate, an adjusting sleeve, a limiting block, a T-shaped rod and a first spring, the supporting plate is arranged below the gas flowmeter body, the adjusting sleeve is slidably arranged on the supporting plate near the left side and the right side, the limiting block is arranged on the adjusting sleeve near the outer side, the adjusting sleeve and the limiting block are mutually attached to the gas flowmeter body, the T-shaped rod is arranged on the adjusting sleeve near the inner side, a jack is formed in the adjusting sleeve, a plurality of slots are formed in the supporting plate, the inner end of the T-shaped rod extends to the inner portion of one of the slots through the jack, the first spring is connected between the T-shaped rod and the adjusting sleeve, and the first spring is sleeved on the outer side of the T-shaped rod.

9. The gas flowmeter testing device according to claim 8, wherein the second adjusting portion comprises a supporting rod, a supporting sleeve, a rotating wheel and a screw rod, the supporting rod is installed in the middle of the lower portion of the supporting plate, the supporting sleeve is arranged below the supporting rod, the supporting rod is arranged inside the supporting sleeve in a sliding mode, the rotating wheel is arranged at the position, close to the upper portion, of the front side of the supporting sleeve, the screw rod is installed on the rear side of the rotating wheel, a screw hole matched with the screw rod is formed in the supporting sleeve, a plurality of fixing grooves are formed in the supporting rod, and rear threads of the screw rod penetrate through the screw hole and extend to the inside of one of the fixing grooves.

10. The gas flowmeter testing device according to claim 9, wherein the reset portion comprises a mounting plate, a sliding block and a second spring, the mounting plate is mounted at the bottom end of the supporting sleeve, the sliding block is mounted below the mounting plate, a sliding groove adapted to the sliding block is formed in the bottom of the inside of the housing, the sliding block is slidably arranged in the sliding groove, the second spring is mounted on the left side of the sliding block, and the left end of the second spring is mounted on the inner wall of the sliding groove.