Novel diaphragm for diaphragm gas meter

Abstract

The utility model relates to the field of gas meters, and discloses a novel diaphragm for a diaphragm gas meter, which comprises a shell, a digital display screen is fixedly connected to the upper end of the shell, a gas inlet pipe is fixedly connected to the upper end of the shell, an exhaust pipe is fixedly connected to the right side of the upper end of the shell, and a diaphragm replacing device is arranged on the front surface of the shell. The leather film replacing device comprises a movable block. Through the arrangement of the movable block, the fixed block, the cover plate, the air plug, the air bag and the rotating shaft, when people need to disassemble a movable leather film to be installed or the movable leather film needs to be disassembled, the movable leather film can be disassembled and installed conveniently by supplying air or exhausting air into the air plug; and meanwhile, the movable leather film has certain elasticity, so that the movable leather film is not easy to fall off when the movable leather film is embedded into the movable block on the inner cambered surface, and the convenience in disassembly and assembly of the movable leather film are kept while the sealing property of the device is ensured.

Description

Technical Field

[0001] The utility model relates to the field of gas meters, in particular to a new type of membrane used for a membrane type gas meter. Background Art

[0002] A diaphragm gas meter is a meter used to measure gas consumption. It usually includes a flexible membrane. Diaphragm gas meters are commonly used for household, commercial and industrial purposes to monitor and measure the usage of natural gas or liquefied petroleum gas for heating, cooking, and fuel.

[0003] In the prior art, the membrane inside the diaphragm gas meter is deformed by pressure changes when gas flows through it. This deformation is detected by the sensor and converted into a corresponding gas flow signal, thereby measuring the gas usage.

[0004] However, in actual use, since the entire membrane will be constantly driven to move during the detection of the gas intake volume, the membrane will age and deform during long-term use, thereby affecting its measurement accuracy. At the same time, due to the different types of gas used, when there are impurities in the gas, the membrane will also be at risk of damage, and replacing the membrane often takes a long time. Therefore, a new membrane for a membrane gas meter is proposed to solve the above problems. Utility Model Content

[0005] In order to make up for the above shortcomings, the utility model provides a new membrane for a membrane gas meter, aiming to improve the problem of inconvenience in replacing the membrane after long-term use in the testing prior art.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a new type of membrane for a membrane gas meter, comprising a shell, a digital display screen is fixedly connected to the upper end of the shell, an air inlet pipe is fixedly connected to the upper end of the shell, an exhaust pipe is fixedly connected to the right side of the upper end of the shell, and a membrane replacement device is arranged on the front surface of the shell;

[0007] The membrane replacement device includes a movable block, a fixed block is fixedly connected to the inner side of the movable block, a rotating shaft is rotatably connected to the center of the inner surface of the fixed block, an air plug is connected to the inner surface piston of the fixed block, an air bag is fixedly connected to the outer arc surface of the movable block, cover plates are fixedly connected to the front and rear ends of the outer shell, and a movable membrane is arranged on the outer arc surface of the movable block.

[0008] As a further description of the above technical solution:

[0009] The movable membrane comprises a support column, the front and rear ends of the support column are fixedly connected with a silicone rubber layer, and the outer surface of the silicone rubber layer is fixedly connected with a fluororubber layer.

[0010] As a further description of the above technical solution:

[0011] The upper end of the shell is provided with two groups of through holes, and the air inlet pipe and the exhaust pipe are symmetrically distributed with the center line of the shell as the symmetry axis.

[0012] As a further description of the above technical solution:

[0013] An annular groove is arranged on the outer arc surface of the movable block, and an air intake pipe from the air plug to the air bag is opened inside the movable block.

[0014] As a further description of the above technical solution:

[0015] A through hole is provided at the center of the inner surface of the fixing block, the airbag is arranged as a ring as a whole, and a through air inlet is provided at the outer arc surface.

[0016] As a further description of the above technical solution:

[0017] The cover plates are arranged in two groups, and the two groups of cover plates are stacked and distributed at the front and rear ends of the shell with the center line of the shell as the symmetry axis.

[0018] As a further description of the above technical solution:

[0019] The support columns are arranged in a plurality of groups, and the lengths of the support columns in the plurality of groups are different, and the support columns in the plurality of groups are arranged in an inclined shape.

[0020] As a further description of the above technical solution:

[0021] The support column is made of rubber material, and the thickness of the silicone rubber layer is greater than that of the outer fluororubber layer.

[0022] The utility model has the following beneficial effects:

[0023] 1. The movable block, fixed block, cover plate, air plug, air bag and rotating shaft provided in the utility model can conveniently complete the removal and installation of the movable membrane by supplying or exhausting air into the air plug when people need to remove the movable membrane waiting to be installed or to remove the movable membrane. At the same time, since the movable membrane itself has a certain elasticity, it is not easy to fall out when it is embedded in the movable block on the inner arc surface, thereby ensuring the sealing of the device while maintaining the convenient disassembly and assembly of the movable membrane.

[0024] 2. In the utility model, support columns, silicone rubber layers and fluororubber layers are provided. The silicone rubber layer is used to improve the overall temperature resistance of the membrane, so that it can still be used normally even in a low temperature environment. The fluororubber layer is used to maintain the overall corrosion resistance of the membrane. The different lengths and inclined design of the multiple groups of support columns enable the active membrane to distribute the force more evenly when under pressure, avoiding damage to the membrane caused by excessive local stress. At the same time, this design also makes the membrane more stable during movement, reducing errors caused by vibration or impact. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A three-dimensional schematic diagram of a new type of membrane for a membrane gas meter proposed by the utility model;

[0026] Figure 2 This is a schematic diagram of the inner side of the shell of a new type of membrane for a membrane gas meter proposed by the utility model;

[0027] Figure 3 This is an external schematic diagram of a movable block of a new type of membrane for a membrane gas meter proposed by the utility model;

[0028] Figure 4 This is a schematic diagram of a movable block of a new type of membrane for a membrane gas meter proposed by the utility model;

[0029] Figure 5 The utility model is a schematic diagram of the active membrane cross section of a new membrane for a membrane gas meter proposed by the utility model.

[0030] Legend:

[0031] 1. Shell; 2. Membrane replacement device; 3. Movable membrane; 4. Inlet pipe; 5. Exhaust pipe; 6. Digital display screen; 201. Movable block; 202. Fixed block; 203. Cover plate; 204. Air plug; 205. Air bag; 206. Rotating shaft; 301. Support column; 302. Silicon rubber layer; 303. Fluororubber layer. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Reference Figure 1-Figure 3The utility model provides an embodiment: a new membrane for a membrane gas meter, comprising a housing 1, a digital display screen 6 is fixedly connected to the upper end of the housing 1, an air inlet pipe 4 is fixedly connected to the upper end of the housing 1, an exhaust pipe 5 is fixedly connected to the right side of the upper end of the housing 1, and a membrane replacement device 2 is arranged on the front surface of the housing 1;

[0034] The membrane replacement device 2 includes a movable block 201, a fixed block 202 is fixedly connected to the inner side of the movable block 201, a rotating shaft 206 is rotatably connected to the center of the inner surface of the fixed block 202, an air plug 204 is connected to the inner surface piston of the fixed block 202, an air bag 205 is fixedly connected to the outer arc surface of the movable block 201, a cover plate 203 is fixedly connected to the front and rear ends of the outer shell 1, and a movable membrane 3 is arranged on the outer arc surface of the movable block 201.

[0035] The upper end of the housing 1 is provided with two sets of through holes, so that it can be connected with the intake pipe 4 and the exhaust pipe 5. The intake pipe 4 and the exhaust pipe 5 are symmetrically arranged with the center line of the housing 1 as the symmetry axis. The outer arc surface of the movable block 201 is provided with a circular groove, so that the inner arc surface of the movable membrane 3 can be embedded there. The interior of the movable block 201 is provided with an intake pipe from the air plug 204 to the air bag 205, so that people can inject inert gas into the air bag 205 through the through hole at the air plug 204. A through hole is provided at the center of the inner surface of the fixed block 202, so that it can be rotatably connected to the rotating shaft 206. The airbag 205 is arranged as a ring as a whole, so that after inflation, it can fully cover the gap that may be generated between the movable membrane 3 and the movable block 201, thereby improving the sealing performance of the device, and a through air inlet is provided on the outer arc surface. Two groups of cover plates 203 are provided, and the two groups of cover plates 203 are stacked and distributed at the front and rear ends of the outer shell 1 with the center line of the outer shell 1 as the axis of symmetry.

[0036] Reference Figure 3 and Figure 5 The movable membrane 3 includes a support column 301 , the front and rear ends of the support column 301 are fixedly connected with a silicone rubber layer 302 , and the outer surface of the silicone rubber layer 302 is fixedly connected with a fluororubber layer 303 .

[0037] There are multiple groups of support columns 301, and the lengths of the multiple groups of support columns 301 are different. The multiple groups of support columns 301 are all arranged to be inclined. The design of the different lengths and inclined shape of the multiple groups of support columns 301 enables the active membrane 3 to distribute the force more evenly when under pressure, thereby avoiding damage to the membrane caused by excessive local stress. The support columns 301 are made of rubber, and the thickness of the silicone rubber layer 302 is greater than that of the outer fluororubber layer 303.

[0038] Working principle: When the movable membrane 3 needs to be installed as a whole in the present device, it needs to be stretched out from the inside to the outside and inserted into the groove on the outer arc surface of the movable block 201. At the same time, the air plug 204 needs to be pulled outward, and inert gas is input into the movable block 201 through the air supply device. At this time, the gas entering the movable block 201 will move to the inside of the airbag 205, so that the airbags 205 on both sides of the groove inside the movable block 201 begin to expand and form an auxiliary clamping and positioning for the movable membrane 3. Conversely, when the movable membrane 3 needs to be disassembled, the auxiliary fixation of the movable membrane 3 can be released by draining the gas inside the movable block 201.

[0039] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A novel membrane for a membrane gas meter, comprising a housing (1), characterized in that: The upper end of the shell (1) is fixedly connected to a digital display screen (6), the upper end of the shell (1) is fixedly connected to an air intake pipe (4), the upper end of the shell (1) is fixedly connected to an exhaust pipe (5), and the front surface of the shell (1) is provided with a membrane replacement device (2); the membrane replacement device (2) comprises a movable block (201), the inner side of the movable block (201) is fixedly connected to a fixed block (202), the inner surface center of the fixed block (202) is rotatably connected to a rotating shaft (206), the inner surface piston of the fixed block (202) is connected to an air plug (204), the outer arc surface of the movable block (201) is fixedly connected to an air bag (205), the front and rear ends of the shell (1) are fixedly connected to a cover plate (203), and the outer arc surface of the movable block (201) is provided with a movable membrane (3).

2. The novel membrane for a membrane gas meter according to claim 1 is characterized in that: The movable membrane (3) comprises a support column (301), the front and rear ends of the support column (301) are fixedly connected to a silicone rubber layer (302), and the outer surface of the silicone rubber layer (302) is fixedly connected to a fluororubber layer (303).

3. The novel membrane for a membrane gas meter according to claim 1 is characterized in that: Two groups of through holes are provided at the upper end of the outer shell (1), and the air inlet pipe (4) and the exhaust pipe (5) are symmetrically distributed with the center line of the outer shell (1) as the symmetry axis.

4. The novel membrane for a membrane gas meter according to claim 1 is characterized in that: An annular groove is provided on the outer arc surface of the movable block (201), and an air intake pipe from the air plug (204) to the air bag (205) is provided inside the movable block (201).

5. The novel membrane for a membrane gas meter according to claim 1 is characterized in that: A through hole is provided at the center of the inner surface of the fixing block (202); the air bag (205) is arranged as a ring as a whole, and a through air inlet is provided at the outer arc surface.

6. The novel membrane for a membrane gas meter according to claim 1, characterized in that: Two groups of cover plates (203) are provided, and the two groups of cover plates (203) are stacked and distributed at the front and rear ends of the outer shell (1) with the midline of the outer shell (1) as the symmetry axis.

7. The novel membrane for a membrane gas meter according to claim 2, characterized in that: The support columns (301) are provided in a plurality of groups, and the lengths of the plurality of groups of support columns (301) are different. The plurality of groups of support columns (301) are all arranged in an inclined shape.

8. The novel membrane for a membrane gas meter according to claim 2 is characterized in that: The support column (301) is made of rubber material, and the thickness of the silicone rubber layer (302) is greater than that of the outer fluororubber layer (303).

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