CN219036311U

CN219036311U - Gas metering device

Info

Publication number: CN219036311U
Application number: CN202223451686.5U
Authority: CN
Inventors: 庄千胜; 廖志意; 孟海兴; 刘庄婉婷; 谢招枝; 胡乃顺
Original assignee: Cangyi Technology Shanghai Co ltd
Current assignee: Cangyi Technology Shanghai Co ltd
Priority date: 2022-12-22
Filing date: 2022-12-22
Publication date: 2023-05-16
Anticipated expiration: 2032-12-22

Abstract

The utility model discloses a gas metering device, which comprises a metering body, a connecting mechanism and a fixing mechanism, wherein an air inlet pipe is inserted into a fixing pipe in a penetrating way, so that one end of the air inlet pipe protrudes out of a second flange plate, a clamping nut which is in threaded connection with an external thread is screwed down in a rotating way, the air inlet pipe is fixed in the fixing pipe, one end of the air inlet pipe protruding out of the second connecting pipe is inserted into a sealing ring which is in contact with an annular step in the second connecting pipe, a fixing screw is inserted into a hole in the second flange plate and the first flange plate, the second flange plate and the first flange plate are mutually close to each other by screwing down the fixing screw, the contact part of the air inlet pipe and the sealing ring is mutually extruded, and the contact part of the sealing ring and the annular step is extruded, so that the air inlet pipe and the gas metering device are fixedly connected.

Description

Gas metering device

Technical Field

The utility model belongs to the field of gas flow meters, and particularly relates to a gas metering device.

Background

The gas metering device is called a gas meter or a gas flowmeter, and is used for accumulating the volume or the mass of the gas passing through the pipeline. Some flow meters only measure the throughput of fuel gas per unit time and only display the cumulative amount through a conversion mechanism. The earliest gas metering device is a gas storage tank with volume scales and capable of lifting. In 1816, england s.claiger invented the first wet gas meter, changing the method of billing for gas time or burner nominal gas consumption. Then, the dry gas meter with the built-in film is successfully designed, and a foundation is laid for the modern film gas meter. After that, a Pitot tube flowmeter, a wing wheel flowmeter, a venturi tube flowmeter, a heat capacity flowmeter, an orifice plate flowmeter, a Roots meter and the like are also known.

The current gas metering device:

the comparison document CN212432269U discloses a gas metering device, which comprises a meter body and a protection component for protecting a pipeline in the meter body, wherein the meter body comprises a fixing piece, an air inlet pipe, a fixing block and a fastening piece, the fixing block is positioned in the fixing piece, a sliding piece is sleeved on the outer side wall of the air inlet pipe, the sliding piece is in sliding connection with the fixing block, a first groove is formed in the inner side wall of the fixing piece, and a bolt is arranged in the fastening piece; through setting up the slider with the fixed block, make the intake pipe passes through the slider slide on the fixed block enter into the inside of fixed part, and pass through on the fastener the bolt is spacing, thereby makes things convenient for operating personnel to dismantle or install. "

But this gas metering device is when in actual use, and the spring can receive the corruption in the device for a long time, and elasticity weakens or disappears, can not make sealed pad and intake pipe zonulae occludens, and the screw hole can receive the corruption for a long time use inside, makes the intake pipe fixed insecure, and the gas has the risk of revealing to cause danger.

Disclosure of Invention

The utility model aims to solve the defects in the prior art, the spring can be corroded, the elasticity weakens or disappears when being used in the device for a long time, the sealing gasket cannot be tightly connected with the air inlet pipe, the threaded hole can be corroded when being used for a long time, the air inlet pipe is not firmly fixed, and the gas is at risk of leakage, so that danger is brought to users.

In order to achieve the above purpose, the utility model adopts the following technical scheme that the fuel gas metering device comprises a metering device body, a connecting mechanism and a fixing mechanism, wherein the connecting mechanism comprises a first connecting pipe, the metering device body is fixedly connected to the top of the first connecting pipe, the bottom of the first connecting pipe is fixedly communicated with a second connecting pipe, both ends of the second connecting pipe are fixedly welded with first flanges, annular steps are fixedly welded on the inner walls of both ends of the second connecting pipe, the fixing mechanism comprises a fixing pipe, one end of the fixing pipe is fixedly welded with a second flange, an external thread is formed on the surface of one end of the fixing pipe far away from the second flange, a clamping nut is connected to the external thread, an air inlet pipe is inserted into the fixing pipe in a penetrating mode, and one end, close to the second flange, of the air inlet pipe is movably inserted into the second connecting pipe.

As a preferred embodiment, the external thread is uniformly provided with grooves, and the inner wall of the fixing pipe can press the outer wall of the air inlet pipe when the clamping nut rotates on the external thread in a direction away from the second flange plate.

The technical effect of adopting the further scheme is as follows: the clamping screw cap on the external thread is screwed down, so that the air inlet pipe is fixed on the inner wall of the fixed pipe, and the clamping screw cap on the external thread can be unscrewed, so that the air inlet pipe moves in the fixed pipe.

As a preferred embodiment, a sealing ring is contacted between the annular step and the air inlet pipe.

The technical effect of adopting the further scheme is as follows: when the sealing ring is mutually extruded between the air inlet pipe and the annular step, the sealing ring is arranged between the air inlet pipe and the annular step, so that the sealing effect of the joint is better, and no air leakage can occur.

As a preferred implementation mode, the cross-sectional areas of the second flange plate and the first flange plate are the same, corresponding holes are formed in the second flange plate and the first flange plate in a penetrating mode, and fixing screws are movably inserted in the holes in the second flange plate and the first flange plate.

The technical effect of adopting the further scheme is as follows: the first flange plate and the second flange plate can be fixed together by the fixing screw, and the connecting mechanism and the fixing mechanism are connected together by the fixing screw.

As a preferable implementation mode, an air outlet pipe is movably inserted on the inner wall of one end of the second connecting pipe far away from the air inlet pipe.

The technical effect of adopting the further scheme is as follows: the two ends of the second connecting pipe are provided with the same first flange plate, annular steps and fixing mechanisms, one end of the second connecting pipe is fixedly connected with the air inlet pipe, and the other end of the second connecting pipe is fixedly connected with the air outlet pipe.

According to the utility model, the air inlet pipe is inserted into the fixed pipe in a penetrating way, so that one end of the air inlet pipe protrudes out of the second flange plate, the clamping nut in threaded connection with the external thread is screwed down, the air inlet pipe is fixed in the fixed pipe, the protruding end of the air inlet pipe is inserted into the second connecting pipe to be contacted with the sealing ring contacted with the annular step, the fixing screw is inserted into the holes on the second flange plate and the first flange plate, the fixing screw is screwed down to enable the second flange plate to be close to the first flange plate, the contacted part of the air inlet pipe and the sealing ring is extruded, and the contacted part of the sealing ring and the annular step is extruded, so that the fixed connection of the air inlet pipe and the fuel gas metering device is completed.

Drawings

FIG. 1 is a schematic perspective view of a fuel gas metering apparatus according to the present utility model;

fig. 2 is a schematic diagram of a disassembled three-dimensional structure of a fuel gas metering device provided by the utility model;

FIG. 3 is a schematic perspective view of a connection mechanism of a fuel gas metering apparatus according to the present utility model;

fig. 4 is a schematic perspective view of a fixing mechanism of a fuel gas metering apparatus according to the present utility model.

Legend description:

1. a meter body;

2. a connecting mechanism; 201. a first connection pipe; 202. a second connection pipe; 203. a first flange; 204. an annular step;

3. a fixing mechanism; 301. a fixed tube; 302. a second flange; 303. an external thread; 304. clamping a screw cap;

4. a seal ring;

5. a set screw;

6. an air inlet pipe;

7. and an air outlet pipe.

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.

Example 1

As shown in fig. 1 and 3, the gas metering device of this embodiment comprises a meter body 1, a connecting mechanism 2 and a fixing mechanism 3, the connecting mechanism 2 comprises a first connecting pipe 201, the meter body 1 is fixedly connected to the top of the first connecting pipe 201, the bottom of the first connecting pipe 201 is fixedly communicated with a second connecting pipe 202, both ends of the second connecting pipe 202 are fixedly welded with a first flange 203, both inner walls of both ends of the second connecting pipe 202 are fixedly welded with annular steps 204, the fixing mechanism 3 comprises a fixing pipe 301, one end of the fixing pipe 301 is fixedly welded with a second flange 302, one end surface of the fixing pipe 301, which is far away from the second flange 302, is provided with external threads 303, a clamping nut 304 is connected to the external threads 303 in a threaded manner, an air inlet pipe 6 is inserted into the fixing pipe 301, one end, which is close to the second flange 302, of the air inlet pipe 6 is movably inserted into the second connecting pipe 202, the air inlet pipe 6 is inserted into the fixed pipe 301, the part of one end of the air inlet pipe 6 protruding at the second flange plate 302 is screwed, the clamping nut 304 in threaded connection with the external thread 303 is screwed, the air inlet pipe 6 is fixed in the fixed pipe 301, the protruding end of the air inlet pipe 6 is inserted into the second connecting pipe 202 to be contacted with the sealing ring 4 contacted with the annular step 204, the fixing screw 5 is inserted into the holes on the second flange plate 302 and the first flange plate 203, the fixing screw 5 is screwed to enable the second flange plate 302 and the first flange plate 203 to be close to each other, the contact part of the air inlet pipe 6 and the sealing ring 4 is extruded, the contact part of the sealing ring 4 and the annular step 204 is extruded, the fixed connection of the air inlet pipe 6 and the fuel gas metering device is completed, the fixing mode ensures that the air inlet pipe 6 is firmly fixed, the tightness is good, no spring or screw groove is used, and no risk of fuel gas leakage is caused during long-time use, the safety of the user is ensured.

Example 2

As shown in fig. 2 and 4, the external thread 303 is uniformly provided with grooves, when the clamping nut 304 rotates on the external thread 303 in a direction away from the second flange 302, the inner wall of the fixing pipe 301 can press the outer wall of the air inlet pipe 6, the clamping nut 304 on the external thread 303 is screwed down, so that the air inlet pipe 6 is fixed on the inner wall of the fixing pipe 301, the clamping nut 304 on the external thread 303 can be unscrewed, the air inlet pipe 6 moves in the pipeline of the fixing pipe 301, the annular step 204 is contacted with the air inlet pipe 6, when the air inlet pipe 6 and the annular step 204 are mutually pressed by the sealing ring 4, the sealing effect of the joint is better, no air leakage exists between the sealing ring 4 and the air inlet pipe 6, the cross-sectional areas of the second flange plate 302 and the first flange plate 203 are the same, corresponding holes are formed in the second flange plate 302 and the first flange plate 203 in a penetrating mode, fixing screws 5 are movably inserted in the holes in the second flange plate 302 and the first flange plate 203, the first flange plate 203 and the second flange plate 302 can be fixed together through the fixing screws 5, the connecting mechanism 2 and the fixing mechanism 3 are connected together through the fixing screws 5, an air outlet pipe 7 is movably inserted into the inner wall of one end, far away from the air inlet pipe 6, of the second connecting pipe 202, the same first flange plate 203, the same annular step 204 and the same fixing mechanism 3 are arranged at two ends of the second connecting pipe 202, one end of the second connecting pipe is fixedly connected with the air inlet pipe 6, and the other end of the second connecting pipe is fixedly connected with the air outlet pipe 7.

Working principle:

as shown in fig. 1 to 4, when the gas metering device is installed, the gas inlet pipe 6 is inserted into the fixing pipe 301, one end of the gas inlet pipe 6 protrudes from the second flange plate 302, the clamping nut 304 screwed on the external thread 303 is screwed down, the gas inlet pipe 6 is fixed inside the fixing pipe 301, the gas inlet pipe 6 with the protruding part is inserted into the second connecting pipe 202, the annular step 204 is contacted with the sealing ring 4, the gas inlet pipe 6 inserted into the second connecting pipe 202 is contacted with the sealing ring 4, the fixing screw 5 is inserted into the hole on the second flange plate 302 and the first flange plate 203, the fixing screw 5 is screwed down to enable the second flange plate 302 to be close to the first flange plate 203, the gas inlet pipe 6, the sealing ring 4 and the annular step 204 are extruded, the joint is sealed, the fixed connection of the gas inlet pipe 6 and the gas metering device is completed, the gas outlet pipe 7 is fixedly connected to one end of the second connecting pipe 202 far from the gas inlet pipe 6, and the fixed connection of the gas outlet pipe 7 and the gas metering device is completed according to the steps above;

when the air inlet pipe 6 needs to be disassembled, the clamping nut 304 in threaded connection on the external thread 303 is unscrewed in a rotating way, so that the air inlet pipe 6 can be pulled out from the fixed pipe 301, when the air inlet pipe 6 is newly assembled, the air inlet pipe 6 is inserted into the fixed pipe 301 in a penetrating way, the sealing ring 4 is contacted with the annular step 204, the part of the air inlet pipe 6 protruding out of the fixed pipe 301 is inserted into the second connecting pipe 202, the air inlet pipe 6, the sealing ring 4 and the annular step 204 are extruded, the fixing mechanism 3 is far away from the connecting mechanism 2, the second flange 302 and the fixing screw 5 inserted into the first flange 203 are straightened, the clamping nut 304 in threaded connection on the external thread 303 is screwed in a rotating way, the air inlet pipe 6 is fixed in the fixed pipe 301, the fixing screw 5 is screwed in the second flange 302 and the first flange 203, and the air inlet pipe 6, the sealing ring 4 and the annular step 204 are extruded, and the disassembly and the assembly of the air inlet pipe 6 are completed.

According to the design, the air inlet pipe 6 is inserted into the fixing pipe 301, one end of the air inlet pipe 6 protrudes out of the second flange plate 302, the clamping nut 304 in threaded connection with the external thread 303 is screwed down, the air inlet pipe 6 is fixed in the fixing pipe 301, one end of the air inlet pipe 6 protruding out is inserted into the second connecting pipe 202 to be in contact with the sealing ring 4 in contact with the annular step 204, the fixing screw 5 is inserted into the holes in the second flange plate 302 and the first flange plate 203, the fixing screw 5 is screwed down to enable the second flange plate 302 and the first flange plate 203 to be close to each other, the contact part of the air inlet pipe 6 and the sealing ring 4 is extruded, the contact part of the sealing ring 4 and the annular step 204 is extruded, and the fixing connection between the air inlet pipe 6 and the fuel gas metering device is completed.

The above description is only a preferred embodiment of the present utility model, and is not intended to limit the present utility model in any way, and any equivalent embodiments that can be changed or modified to equivalent variations by those skilled in the art using the above disclosure may be applied to other fields, but any simple modification, equivalent variations and modification made to the above embodiments according to the technical principles of the present utility model without departing from the technical scope of the present utility model.

Claims

1. The utility model provides a gas metering device, includes counter body (1), coupling mechanism (2) and fixed establishment (3), its characterized in that: coupling mechanism (2) are including first connecting pipe (201), counter body (1) fixed connection is at the top of first connecting pipe (201), the fixed intercommunication in bottom of first connecting pipe (201) has second connecting pipe (202), the equal welded fastening in both ends of second connecting pipe (202) has first ring flange (203), equal welded fastening has annular step (204) on the both ends inner wall of second connecting pipe (202), fixed establishment (3) are including fixed pipe (301), one end welded fastening of fixed pipe (301) has second ring flange (302), external screw thread (303) have been seted up on the one end surface that second ring flange (302) was kept away from to fixed pipe (301), threaded fastening nut (304) have on external screw thread (303), fixed pipe (301) are inside run through and are inserted and are had intake pipe (6), one end activity that intake pipe (6) are close to second ring flange (302) is inserted and is established in second connecting pipe (202).

2. A gas metering device as set forth in claim 1 wherein: grooves are uniformly formed in the external threads (303), and when the clamping nuts (304) rotate on the external threads (303) in the direction away from the second flange plate (302), the inner wall of the fixing tube (301) can squeeze the outer wall of the air inlet tube (6).

3. A gas metering device as set forth in claim 1 wherein: a sealing ring (4) is contacted and connected between the annular step (204) and the air inlet pipe (6).

4. A gas metering device as set forth in claim 1 wherein: the cross-sectional areas of the second flange plate (302) and the first flange plate (203) are the same, corresponding holes are formed in the second flange plate (302) and the first flange plate (203) in a penetrating mode, and fixing screws (5) are movably inserted into the holes in the second flange plate (302) and the first flange plate (203).

5. A gas metering device as set forth in claim 1 wherein: an air outlet pipe (7) is movably inserted into the inner wall of one end of the second connecting pipe (202) far away from the air inlet pipe (6).