Gas low-level inlet through-wall prefabricated assembly

Abstract

The utility model relates to a kind of low gas inlet port wall penetration prefabricated components, including inlet port ball valve, ground gas pipe connecting piece and household gas pipe connecting piece, the inlet end and outlet end of inlet port ball valve are equipped with the first flange and second flange, the lower end of ground gas pipe connecting piece is connected with the gas pipeline buried in ground, ground gas pipe connecting piece is equipped with gas purging port, the upper end of ground gas pipe connecting piece is equipped with the third flange sealedly connected with the first flange by bolt, household gas pipe connecting piece is L-shaped, the horizontal pipe section of household gas pipe connecting piece passes through wall and is connected with the gas pipeline installed in building, the vertical pipe section lower end of household gas pipe connecting piece is equipped with the fourth flange sealedly connected with the second flange by bolt, household gas pipe connecting piece is equipped with gas pressure measuring port, ground gas pipe connecting piece and household gas pipe connecting piece are integrated welded pipe fittings prefabricated in factory.It has the advantages of simple structure, easy to disassemble and assemble, safe and reliable, strong practicality.

Description

Technical Field

[0001] This utility model relates to a gas pipe fitting, specifically to a prefabricated through-wall component for a gas inlet. Background Technology

[0002] In the operation of gas pipeline networks, the construction of gas pipelines at the inlet of residential buildings is currently typically carried out by on-site welding of individual pipe fittings. This method has the following problems in practical application: 1. It lacks the conditions for weld inspection, easily leading to safety hazards due to incomplete welding; 2. On-site anti-corrosion measures may be ineffective, affecting the service life of inlet valves and fittings; 3. On-site welding is inefficient, extending the construction period and increasing construction costs. Utility Model Content

[0003] The purpose of this utility model is to provide a prefabricated component for a low-level gas inlet through a wall, which has the advantages of simple structure, convenient assembly and disassembly, safety and reliability, and strong practicality.

[0004] To address the problems existing in the prior art, this utility model provides a prefabricated wall-penetrating component for a low-level gas inlet, including an inlet ball valve, a ground gas pipe connector, and a household gas pipe connector. The inlet ball valve has a first flange and a second flange at its inlet and outlet ends, respectively. The lower end of the ground gas pipe connector is connected to a gas pipeline buried underground, and the upper end of the ground gas pipe connector has a third flange that is sealed to the first flange by bolts. The household gas pipe connector is L-shaped, with its horizontal section passing through the wall and connecting to a gas pipeline installed in the building. The lower end of the vertical section of the household gas pipe connector has a fourth flange that is sealed to the second flange by bolts. Both the ground gas pipe connector and the household gas pipe connector are prefabricated integrated welded pipe fittings in a factory. All welds of both the ground gas pipe connector and the household gas pipe connector have undergone radiographic testing, and the weld quality meets the requirements for safe use. Both the ground gas pipe connector and the household gas pipe connector have an anti-corrosion layer on their outer side.

[0005] Furthermore, this utility model provides a prefabricated component for a gas low-level inlet wall penetration, wherein the anti-corrosion layer comprises a fusion-bonded epoxy powder coating and a weather-resistant PE powder coating arranged from the inside out, the thickness of the fusion-bonded epoxy powder coating being greater than or equal to 400 μm, and the thickness of the weather-resistant PE powder coating being greater than or equal to 1100 μm.

[0006] Furthermore, this utility model provides a prefabricated component for a low-level gas inlet penetrating a wall, wherein a cleaning pipe connector is provided on the ground-level gas pipe connector, and a first anti-tampering plug is installed on the cleaning pipe connector; a pressure testing pipe connector is provided on the vertical pipe section of the gas pipe connector, and a second anti-tampering plug is provided on the pressure testing pipe connector.

[0007] Furthermore, in this utility model, a prefabricated component for a low-level gas inlet penetrating a wall is provided, wherein the lower end of the underground gas pipe connector is also provided with an L-shaped steel-plastic adapter pipe prefabricated in the factory and integrated with it. The lower end of the steel-plastic adapter pipe is connected to a gas pipeline buried underground and made of polyethylene material through a steel-plastic adapter.

[0008] Furthermore, in this utility model, a prefabricated component for a gas low-level inlet penetrating a wall is provided, wherein a first sealing gasket is provided between the third flange and the first flange, and a second sealing gasket is provided between the fourth flange and the second flange.

[0009] Furthermore, in this utility model, a prefabricated component for a low-level gas inlet penetrating a wall is provided, wherein the first and second sealing gaskets are made of modified polytetrafluoroethylene material.

[0010] Furthermore, in this utility model, a prefabricated component for a low-level gas inlet penetrating through a wall is provided, wherein the part of the underground gas pipe connector that extends into the ground is provided with a ground-penetrating sleeve, and the part of the horizontal pipe section of the household gas pipe connector that passes through the wall is provided with a wall-penetrating sleeve.

[0011] Compared with existing technologies, this utility model of a prefabricated component for a low-level gas inlet penetrating through a wall has the following advantages: This utility model includes an inlet ball valve, a ground gas pipe connector, and a household gas pipe connector. The inlet ball valve has a first flange and a second flange at its inlet and outlet ends, respectively. The lower end of the ground gas pipe connector connects to the underground gas pipeline, and a third flange, bolted to the first flange, is installed at the upper end of the ground gas pipe connector. The household gas pipe connector adopts an L-shaped structure, allowing its horizontal section to pass through the wall and connect to the gas pipeline installed in the building. A fourth flange, bolted to the second flange, is installed at the lower end of the vertical section of the household gas pipe connector. Both the ground gas pipe connector and the household gas pipe connector are prefabricated integrated welded pipe fittings in a factory. All welds in both components undergo radiographic testing, and both have an anti-corrosion layer on their outer surface. This results in a prefabricated wall-penetrating component for low-level gas inlets that is simple in structure, easy to assemble and disassemble, safe, reliable, and highly practical. This invention integrates the underground gas pipe connector and the household gas pipe connector into a single prefabricated component in the factory, and performs comprehensive radiographic testing on all welds to ensure welding quality. Furthermore, it applies standardized anti-corrosion treatment to all welded components to guarantee corrosion resistance. This effectively avoids safety hazards caused by incomplete welding during subsequent use and enhances corrosion resistance, ensuring the service life of the inlet valve and fittings.

[0012] The following detailed description of a prefabricated component for a low-level gas inlet through a wall, in conjunction with the specific embodiments shown in the accompanying drawings, further illustrates this utility model. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the first embodiment of the prefabricated component for a low-level gas inlet through a wall according to the present invention;

[0014] Figure 2 This is an installation diagram of the first embodiment of the prefabricated component for a low-level gas inlet through a wall according to the present invention.

[0015] Figure 3 This is a structural schematic diagram of a second embodiment of the prefabricated component for a low-level gas inlet through a wall according to the present invention;

[0016] Figure 4 This is an installation diagram of the second embodiment of the prefabricated component for a low-level gas inlet through a wall according to the present invention.

[0017] Figure 5 This is a schematic diagram of the structure of the underground gas pipe connector in the second embodiment of the prefabricated component for a low-level gas inlet wall penetration of the present invention.

[0018] Figure 6 This is a schematic diagram of the structure of the inlet gas pipe connector in the second embodiment of the prefabricated component for a low-level gas inlet wall penetration of this utility model. Detailed Implementation

[0019] First, it should be noted that the directional terms such as up, down, left, right, front, and back mentioned in this utility model are only descriptions based on the accompanying drawings for ease of understanding, and are not intended to limit the technical solution or the scope of protection claimed in this utility model.

[0020] like Figure 1 and Figure 2The first specific embodiment of the prefabricated component for a low-level gas inlet penetrating through a wall, shown in this utility model, includes an inlet ball valve 1, a ground gas pipe connector 2, and a household gas pipe connector 3. The inlet ball valve 1 has a first flange 11 and a second flange 12 at its inlet and outlet ends respectively, for easy assembly and disassembly. The lower end of the ground gas pipe connector 2 is connected to a gas pipeline 100 buried underground, and a third flange 21 is provided at the upper end of the ground gas pipe connector 2, which is sealed to the first flange 11 by bolts. The household gas pipe connector 3 adopts an L-shaped structure, with its horizontal section passing through the wall 200 and connecting to the gas pipeline installed in the building, and a fourth flange 31 is provided at the lower end of the vertical section of the household gas pipe connector 3, which is sealed to the second flange 12 by bolts. Both the underground gas pipe connector 2 and the household gas pipe connector 3 are prefabricated integrated welded pipe structures in the factory. All welds of the underground gas pipe connector 2 and the household gas pipe connector 3 are subjected to radiographic testing to ensure that the weld quality meets the requirements for safe use. Furthermore, an anti-corrosion layer is coated on the outside of the underground gas pipe connector 2 and the household gas pipe connector 3 to ensure that the anti-corrosion quality meets the requirements for safe use.

[0021] The above configuration constitutes a prefabricated component for a low-level gas inlet penetrating the wall, characterized by its simple structure, convenient assembly and disassembly, safety, reliability, and practicality. This invention integrates the underground gas pipe connector 2 and the residential gas pipe connector 3 into a single prefabricated component, welded together in a factory. All welds undergo comprehensive radiographic testing to ensure welding quality, and the welded parts undergo standardized anti-corrosion treatment to guarantee corrosion resistance. This effectively avoids safety hazards caused by incomplete welding during subsequent use and enhances corrosion resistance, ensuring the service life of the inlet valve and fittings. It should be noted that in actual installation, this specific implementation only requires welding the underground gas pipe connector 2 and the residential gas pipe connector 3 to the buried gas pipeline and the gas pipeline located on the first floor, respectively, and then installing the inlet ball valve 1 between them. Compared to traditional inlet gas pipeline construction, this significantly reduces the welding process. However, it is not suitable for gas pipelines made of polyethylene or for high-level inlets not on the first floor (second floor and above). Furthermore, it should be pointed out that the inlet refers to the location where gas enters the building.

[0022] As an optimized solution, this specific embodiment employs the following method for the anti-corrosion layer: a fusion-bonded epoxy powder coating and a weather-resistant PE powder coating are applied from the inside out on the underground gas pipe connector 2 and the household gas pipe connector 3. The thickness of the fusion-bonded epoxy powder coating is greater than or equal to 400 μm, and the thickness of the weather-resistant PE powder coating is greater than or equal to 1100 μm. This anti-corrosion layer structure has the advantages of simple structure, easy construction, and good anti-corrosion effect. As an optimized solution, this specific embodiment provides a cleaning pipe joint 22 on the underground gas pipe connector 2 at a location above ground, and installs a first anti-tampering plug 23 on the cleaning pipe joint 22; a pressure testing pipe joint 32 is provided on the vertical pipe section of the household gas pipe connector 3, and a second anti-tampering plug 33 is installed on the pressure testing pipe joint 32. This setup, through the cleaning pipe connector 22, allows for the insertion of a gas ball into the underground gas pipe connector 2 when needed. The gas ball is then inflated to cut off the pipeline before the inlet valve, facilitating the replacement of the inlet valve or the maintenance of other components. This improves the convenience of maintenance operations. Similarly, by installing a pressure testing pipe connector 32, a pressure gauge can be connected to the connector to monitor the pressure holding status of the user pipe and gas appliances after the outlet of the inlet ball valve. The pressure holding status can then be used to determine if there is a gas leak, further improving the convenience of maintenance operations.

[0023] like Figures 3 to 6 The second specific embodiment of the prefabricated component for a low-level gas inlet wall penetration shown in this utility model differs from the first specific embodiment in that a steel-plastic adapter pipe 24, which is prefabricated in the factory and is L-shaped and integrated with the underground gas pipe connector 2, is provided at the lower end of the gas pipe connector 2. The lower end of the steel-plastic adapter pipe 24 is connected to the underground gas pipeline made of polyethylene material through a steel-plastic adapter 241.

[0024] In practical applications, to ensure reliable sealing, this invention provides a first sealing gasket 211 between the third flange 21 and the first flange 11, and a second sealing gasket 311 between the fourth flange 31 and the second flange 12. Both the first and second sealing gaskets are made of modified polytetrafluoroethylene (PTFE). It should be noted that, to ensure waterproofing, this invention also provides a ground-penetrating sleeve 4 at the underground penetration point of the underground gas pipe connector 2, and a wall-penetrating sleeve 5 at the point where the horizontal section of the gas pipe connector 3 passes through the wall. Waterproofing material is filled into both the ground-penetrating sleeve 4 and the wall-penetrating sleeve 5.

[0025] The above embodiments are merely descriptions of preferred embodiments of the present utility model and are not intended to limit the scope of protection of the present utility model. Any modifications made by those skilled in the art based on the technical solution of the present utility model without departing from the design concept of the present utility model shall fall within the scope of protection defined by the claims of the present utility model.

Claims

1. A prefabricated component for a low-level gas inlet penetrating a wall, characterized in that, The system includes an inlet ball valve (1), an underground gas pipe connector (2), and an inlet gas pipe connector (3). The inlet ball valve (1) has a first flange (11) and a second flange (12) at its inlet and outlet ends, respectively. The lower end of the underground gas pipe connector (2) is connected to the underground gas pipeline, and the upper end of the underground gas pipe connector (2) is provided with a third flange (21) that is sealed to the first flange (11) by bolts. The inlet gas pipe connector (3) is L-shaped, and the horizontal section of the inlet gas pipe connector (3) passes through the wall and is installed... In the gas pipeline connection inside the building, the lower end of the vertical pipe section of the gas pipe connector (3) is provided with a fourth flange (31) which is sealed to the second flange (12) by bolts. The gas pipe connector (2) and the gas pipe connector (3) are both prefabricated integrated welded pipe fittings in the factory. All welds of the gas pipe connector (2) and the gas pipe connector (3) have been radiographically inspected and the weld quality meets the requirements for safe use. The outer side of the gas pipe connector (2) and the gas pipe connector (3) is provided with an anti-corrosion layer.

2. The prefabricated component for a low-level gas inlet penetrating a wall according to claim 1, characterized in that, The anti-corrosion layer includes a fusion-bonded epoxy powder coating and a weather-resistant PE powder coating arranged from the inside out. The thickness of the fusion-bonded epoxy powder coating is greater than or equal to 400 μm, and the thickness of the weather-resistant PE powder coating is greater than or equal to 1100 μm.

3. A prefabricated component for a low-level gas inlet penetrating a wall according to claim 2, characterized in that, The gas pipe connector (2) is provided with a cleaning pipe joint (22) at a position on the ground. The cleaning pipe joint (22) is equipped with a first anti-dismantling plug (23). The gas pipe connector (3) is provided with a pressure testing pipe joint (32) on the vertical pipe section. The pressure testing pipe joint (32) is provided with a second anti-dismantling plug (33).

4. A prefabricated component for a low-level gas inlet penetrating a wall according to claim 3, characterized in that, The lower end of the underground gas pipe connector (2) is also provided with an L-shaped steel-plastic adapter pipe (24) prefabricated in the factory and integrated with it. The lower end of the steel-plastic adapter pipe (24) is connected to the underground gas pipeline made of polyethylene material through a steel-plastic adapter (241).

5. A prefabricated component for a low-level gas inlet penetrating a wall according to claim 4, characterized in that, A first sealing gasket (211) is provided between the third flange (21) and the first flange (11), and a second sealing gasket (311) is provided between the fourth flange (31) and the second flange (12).

6. A prefabricated component for a low-level gas inlet penetrating a wall according to claim 5, characterized in that, The first sealing gasket (211) and the second sealing gasket (311) are made of modified polytetrafluoroethylene material.

7. A prefabricated component for a low-level gas inlet penetrating a wall according to claim 6, characterized in that, The underground gas pipe connector (2) is provided with a ground-penetrating sleeve (4) at the part that extends into the ground, and the horizontal pipe section of the household gas pipe connector (3) is provided with a wall-penetrating sleeve (5) at the part that passes through the wall.

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