CN218177990U - Pressure air pumping valve device at tail end of town gas construction pipeline - Google Patents
Pressure air pumping valve device at tail end of town gas construction pipeline Download PDFInfo
- Publication number
- CN218177990U CN218177990U CN202222642986.5U CN202222642986U CN218177990U CN 218177990 U CN218177990 U CN 218177990U CN 202222642986 U CN202222642986 U CN 202222642986U CN 218177990 U CN218177990 U CN 218177990U
- Authority
- CN
- China
- Prior art keywords
- air
- pipeline
- valve
- tail end
- chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Details Of Valves (AREA)
Abstract
The utility model discloses a pressure air extraction valve device at the tail end of a town gas construction pipeline, which comprises an air extraction valve plug, wherein the air extraction valve plug is connected with the tail end of the pipeline through welding or a connecting flange; the air pumping plug comprises an air valve, an air chamber and an air pumping assembly; the air chamber is respectively provided with an air inlet and an air outlet; the air valve is movably arranged on the air inlet and used for controlling the communication or the closing of a pipeline and the air chamber; when the air pumping assembly moves away from the air valve; the air valve is away from the air inlet, and the air exhaust assembly sucks the mixed air at the tail end of the pipeline into the air chamber; the air pumping assembly is pressed on the air valve through movement; the air valve enters the air inlet, and the air exhaust assembly exhausts the mixed air in the air chamber from the air outlet. The utility model discloses can discharge the terminal remaining gas mixture of pipeline effectively, ensure gas pipeline safe operation, effectively avoid the terminal gas mixture of pipeline to cause a series of problems such as corruption to the pipe inner wall.
Description
Technical Field
The utility model relates to a gas equipment technical field, especially a town gas construction pipeline end pressure air extraction valve ware.
Background
In recent years, with the popularization and development of town gas, the characteristics of safety, energy conservation, environmental protection and convenient use of town pipeline gas are generally accepted by people. Therefore, the construction layout of the town gas pipe network is accelerated in all regions, and after the construction of the gas pipeline is finished or when the gas pipeline needs to be maintained, the air in the pipeline needs to be replaced and discharged before natural gas enters the pipeline; the replacement is firstly to ensure safety, and is dangerous work, such as improper replacement mode or incomplete replacement, which can cause malignant accidents.
In the natural gas replacement process, according to the pipeline construction conditions, such as town gas pipelines, after the construction is completed, replacement operation is required, a tail end valve, a pressure regulating cabinet or a pressure regulating box is generally used as a replacement tail end detection point in the operation process, and partial pipelines still exist at the rear ends of the tail end valve, the pressure regulating cabinet or the pressure regulating box, so that when replacement is caused, partial mixed gas which is not completely replaced exists in the pipeline at the rear end of the detection point, and the internal air cannot be completely exhausted.
According to two common replacement modes in China at present, one is an inert gas replacement method, inert gas (mainly nitrogen) is used for replacing air in a pipeline, and then natural gas is used for replacing the inert gas in the pipeline, namely the inert gas is used as a replacement intermediate medium. The other method is a direct gas replacement method, also called gas-pushing gas replacement method, and directly adopts natural gas to slowly enter a pipeline to replace air, thereby achieving the purpose of replacement.
The inert gas replacement method consumes a large amount of inert gas and fuel gas, has high cost and large workload, can ensure that the natural gas does not contact with the air in a pipe network, has high safety, is a traditional replacement mode generally adopted in the current fuel gas industry, and has the condition of incomplete replacement and mixed gas at the tail end of a pipeline. The direct gas replacement method is simple and economical, but has certain danger, natural gas is mixed with air in a pipeline to reach 5% -15% of explosion limit, and due to the non-uniformity of mixing, explosion is very likely to occur when encountering a fire source.
The air pumping valve plug is arranged at the tail end of a pipeline, residual air at the tail end of a gas pipeline can be pumped out completely, and the risk of air and mixed gas existing in natural gas is avoided, so that the replacement purpose is achieved.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide an urban gas construction pipeline terminal pressure air suction valve ware can discharge the terminal remaining gas mixture of pipeline effectively, has ensured gas pipeline safe operation, has effectively avoided the terminal gas mixture of pipeline to cause a series of problems such as corruption to the pipe inner wall.
The utility model discloses a following technical scheme realizes:
the pressure air pumping valve device at the tail end of the town gas construction pipeline comprises an air pumping valve plug, wherein the air pumping valve plug is connected with the tail end of the pipeline through a welding or connecting flange; wherein: the air pumping plug comprises an air valve, an air chamber and an air pumping assembly; the air chamber is respectively provided with an air inlet and an air outlet; the air valve is movably arranged on the air inlet and is used for controlling the communication or the closing of a pipeline and the air chamber; when the air pumping assembly moves away from the air valve; the air valve is away from the air inlet, and the air exhaust assembly sucks the mixed air at the tail end of the pipeline into the air chamber; the air pumping assembly is pressed on the air valve through movement; the air valve enters the air inlet, and the air exhaust assembly exhausts the mixed air in the air chamber from the air outlet.
Further, the air exhaust assembly comprises a piston, a piston rod, a spring and a pull rod; the piston is arranged at one end of the piston rod; the pull rod is arranged at the other end of the piston rod; the spring is sleeved in the middle of the piston rod; one end of the piston rod, which is provided with the pull rod, penetrates out of the air outlet.
Furthermore, the air valve is made of the same material as the pipeline.
Further, a flexible membrane is arranged inside the air chamber; the flexible membrane is made of rubber.
The utility model has the advantages that:
the utility model discloses an increase the take out air valve at the pipeline end and block up, with the whole discharge tube of the terminal mist of pipeline. Specifically, the air valve is opened by raising the piston, the mixed gas at the tail end of the pipeline is sucked into the air chamber, the piston is pressed down to close the air valve, the mixed gas in the air chamber is discharged, the gas is taken through the sampler for detection and analysis through repeated reciprocating operation, the mixed gas in the pipeline is completely discharged, the safe operation is effectively ensured, and a series of problems that the mixed gas at the tail end of the pipeline corrodes the inner wall of the pipeline and the like are avoided.
Drawings
FIG. 1 is a schematic view of an assembly structure of an air extraction valve plug and a pipeline according to an embodiment of the present invention;
FIG. 2 is a schematic view of the air extraction valve of the embodiment of the present invention before the air extraction valve blocks the mixture in the extraction pipe;
FIG. 3 is a schematic view of the air exhaust valve according to the embodiment of the present invention after the air exhaust valve blocks the mixture in the air exhaust pipe;
fig. 4 is a schematic structural view of the air extraction valve plug of the embodiment of the present invention.
In the drawings: 1-air pumping valve blocking; 2-a pipeline; 11-an air valve; 12-air chamber; 13-a pumping assembly; 14-a flexible membrane; 131-a piston; 132-a piston rod; 133-a spring; 134-pull rod.
Detailed Description
The present invention will be described in detail with reference to the drawings and specific embodiments, and the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
It should be noted that all directional indicators (such as upper, lower, left, right, front, rear, upper end, lower end, top, bottom \8230;) in the embodiments of the present invention are only used to explain the relative positional relationship between the components in a specific posture (as shown in the attached drawings), the motion situation, etc., and if the specific posture is changed, the directional indicator is changed accordingly.
In the present application, unless expressly stated or limited otherwise, the term "connected" is to be construed broadly, e.g., "connected" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the feature; in addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.
Referring to fig. 1 to 4, the pressure air extraction valve device for the tail end of the town gas construction pipeline comprises an air extraction valve plug 1, wherein the air extraction valve plug 1 is connected with the tail end of a pipeline 2 through a welding or connecting flange; wherein: the air pumping valve plug 1 comprises an air valve 11, an air chamber 12 and an air pumping assembly 13; the air chamber 12 is respectively provided with an air inlet and an air outlet; the air valve 11 is movably arranged on the air inlet and is used for controlling the communication or the closing of the pipeline 2 and the air chamber 12; when the air suction assembly 13 moves away from the air valve 11; the air valve 11 is away from the air inlet, and the air suction assembly 13 sucks the mixed air at the tail end of the pipeline 2 into the air chamber 12; the air pumping assembly 13 is pressed against the air valve 11 through movement; the air valve 11 enters the air inlet, and the air exhaust assembly 13 exhausts the mixed air in the air chamber 12 from the air outlet. The utility model discloses can utilize all kinds of pipelines to replace the use widely. The device can effectively discharge the residual mixed gas at the tail end of the pipeline, more effectively ensure safe operation, and effectively avoid a series of problems of corrosion and the like of the mixed gas at the tail end of the pipeline on the inner wall of the pipeline.
Specifically, in this embodiment, the air extracting assembly 13 includes a piston 131, a piston rod 132, a spring 133, and a pull rod 134; the piston 131 is disposed at one end of the piston rod 132; the pull rod 134 is disposed at the other end of the piston rod 132; the spring 133 is sleeved in the middle of the piston rod 132; one end of the piston rod 132 provided with the pull rod 134 penetrates out of the air outlet. It should be noted that, by pulling the pull rod 134 to lift the piston 131, thereby opening the gas valve 11, the piston 131 sucks the mixture at the end of the pipeline into the gas chamber 12, and at this time, the spring 133 is in a compressed state; then, the piston 131 is pressed down to close the air valve 11, and the mixed air in the air chamber 12 is discharged, at this time, the spring 133 is in an extending state; through reciprocal operation many times, get gas through the sampler and carry out detection and analysis, ensure to discharge the whole of gas mixture in the pipeline, effectually ensured the safe operation, avoided the terminal gas mixture of pipeline to cause a series of problems such as corruption to the pipeline inner wall simultaneously.
Specifically, in the present embodiment, the air valve 11 is made of the same material as the pipe. It should be noted that the air valve 11 is made of the same material as the pipeline to ensure the same pressure-bearing capacity.
Specifically, in this embodiment, a flexible membrane 14 is disposed inside the air chamber 12; the flexible membrane 14 is made of rubber. Note that the provision of the flexible film 14 ensures that the air-tightness of the air chamber 12 is satisfactory.
The utility model discloses a use method and notice:
(1) Method of use
1. Before replacement, the equipment is connected with the tail end of the pipeline, and the material of related materials is ensured to be the same as that of the main pipeline, so that the pressure bearing capacity is ensured to be the same;
2. after the detection of the upper side detection point is qualified, the tail end valve is closed;
3. starting the equipment, lifting the piston to open the gas valve, and sucking the mixed gas at the tail end of the pipeline into the gas chamber from the gas inlet;
4. the piston rod is pressed down, and the piston discharges the gas in the gas chamber from the gas outlet;
5. and (5) repeating the steps 2, 3 and 4 until no mixed gas exists in the gas chamber.
(2) Attention points
1. The air pumping valve plug is stored in a clean and dry place, and the integrity of the air pumping valve plug, the firmness of the connecting part and the air tightness of the body are checked before use;
2. before installation, firstly, confirming whether equipment is intact and confirming a connection mode;
3. after the installation is finished, an air tightness pressure test is carried out;
4. more than two persons are pumped out for operation, and the persons are in contact with upstream replacement detection personnel at any time so as to ensure that the operation interfaces of the two persons are clear, and the valve is switched on and off after the replacement is qualified;
6. the equipment can be retained on the pipeline for a long time.
The technical solutions provided by the embodiments of the present invention are introduced in detail, and the principles and embodiments of the present invention are explained by using specific examples, and the explanations of the above embodiments are only applicable to help understanding the principles of the embodiments of the present invention; meanwhile, for a person skilled in the art, according to the embodiments of the present invention, there may be variations in the specific implementation manners and application ranges, and in summary, the content of the description should not be construed as a limitation to the present invention.
Claims (4)
1. The pressure air pumping valve device at the tail end of the town gas construction pipeline comprises an air pumping valve plug, wherein the air pumping valve plug is connected with the tail end of the pipeline through a welding or connecting flange; the method is characterized in that: the air pumping plug comprises an air valve, an air chamber and an air pumping assembly; the air chamber is respectively provided with an air inlet and an air outlet; the air valve is movably arranged on the air inlet and used for controlling the communication or the closing of a pipeline and the air chamber; when the air pumping assembly moves away from the air valve; the air valve is away from the air inlet, and the air exhaust assembly sucks the mixed air at the tail end of the pipeline into the air chamber; the air pumping assembly is pressed on the air valve through movement; the air valve enters the air inlet, and the air exhaust assembly exhausts the mixed air in the air chamber from the air outlet.
2. The town gas construction pipeline end pressure air extraction valve device according to claim 1, wherein: the air extraction assembly comprises a piston, a piston rod, a spring and a pull rod; the piston is arranged at one end of the piston rod; the pull rod is arranged at the other end of the piston rod; the spring is sleeved in the middle of the piston rod; one end of the piston rod, which is provided with the pull rod, penetrates out of the air outlet.
3. The town gas construction pipeline end pressure air extraction valve device according to claim 1, characterized in that: the air valve is made of the same material as the pipeline.
4. The town gas construction pipeline end pressure air extraction valve device according to claim 1, characterized in that: a flexible membrane is arranged in the air chamber; the flexible membrane is made of rubber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222642986.5U CN218177990U (en) | 2022-10-09 | 2022-10-09 | Pressure air pumping valve device at tail end of town gas construction pipeline |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222642986.5U CN218177990U (en) | 2022-10-09 | 2022-10-09 | Pressure air pumping valve device at tail end of town gas construction pipeline |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218177990U true CN218177990U (en) | 2022-12-30 |
Family
ID=84608132
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222642986.5U Active CN218177990U (en) | 2022-10-09 | 2022-10-09 | Pressure air pumping valve device at tail end of town gas construction pipeline |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218177990U (en) |
-
2022
- 2022-10-09 CN CN202222642986.5U patent/CN218177990U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208495246U (en) | A kind of power battery formation cabinet self-stripping unit | |
| CN209910920U (en) | Device for detecting battery leakage | |
| CN218177990U (en) | Pressure air pumping valve device at tail end of town gas construction pipeline | |
| CN214093556U (en) | Automatic exhaust device for lithium battery solution pipeline | |
| CN208071306U (en) | A kind of totally-enclosed intelligent Unloading Device | |
| CN211174827U (en) | Pneumatic air-extracting water-pumping device | |
| CN206787781U (en) | A kind of vacuum sealing film test device suitable for superconduction proton precessional magnetometer | |
| CN212872351U (en) | Waste gas collecting and detecting device | |
| CN102522223B (en) | Controllable filling method for vacuum filling | |
| CN215411383U (en) | Gas tank inflation valve | |
| CN212807780U (en) | Photoacoustic spectroscopy oil gas monitoring devices's negative pressure degasification mechanism | |
| CN206459959U (en) | A kind of fluorescent penetrant display for penetrant inspection | |
| CN213902790U (en) | Detection and maintenance device for air compression system | |
| CN212159040U (en) | Transformer respirator detection device | |
| CN209656236U (en) | A kind of automotive oil tank air-tightness detection device | |
| CN218600843U (en) | Breather valve detection device | |
| CN206225144U (en) | A kind of transformer vacuum recharging oil device | |
| CN215496308U (en) | Electric locomotive transformer exhaust apparatus | |
| CN215719329U (en) | Suction valve of reciprocating vacuum pump | |
| CN219694665U (en) | Sampler for toxic gas analysis | |
| CN212508001U (en) | Inflatable sealing device for environmental chamber | |
| CN214893932U (en) | Leak hunting device to single root canal in tubular heat exchanger | |
| CN110517848B (en) | Main transformer flange seal ring device with oil replacing interface | |
| CN212869369U (en) | SF6 gas recovery system | |
| CN219363261U (en) | Oil gas recovery system of filling station |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |