Easily-observed gas leakage monitoring device for gas pipeline connection node
By using the shell, elastic skirt, locking clamping and air leakage monitoring structure at the gas pipeline connection node, the concentrated indicator liquid driven by air pressure changes is used to monitor leakage, which solves the problem of small flow leakage not easy to detect, and achieves long-term monitoring and protection improves the leakage protection effect of connecting nodes.
Patent Information
- Application Number
- CN202421065080.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-16
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-16
AI Technical Summary
Small flow leakage at the gas pipeline connection node is not easy to detect, especially long-term continuous small flow leakage is not easy to monitor and detect.
An easy-to-visible air leakage monitoring device including a cavities, a sealed elastic skirt, a locking clamp, an air leakage monitoring structure and a leak feedback structure are designed, and a concentrated indicator liquid driven by air pressure changes and The transparent liquid is connected to the concentrated indicator liquid through the communication tube. After the transparent liquid diffuses, it is easy to observe the leakage.
Timely and accurate monitoring of gas pipeline connection nodes is achieved, avoiding the problem of small flow leakage not easy to detect, and providing protection during subsequent use of the connection, improving leakage prevention effect.
Smart Images
Figure CN222297702U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gas pipelines, and in particular to an easily detectable gas leakage monitoring device for a gas pipeline connection node. Background Art
[0002] Gas is a general term for combustible gases. It releases heat through combustion and is widely used by commercial and residential users. Since gas is flammable and explosive, there are various preventive measures to ensure the safe use of gas. Its transportation usually uses dedicated gas pipelines, and it is necessary to regularly check the air tightness and aging of gas terminal equipment to prevent leakage and cause safety accidents.
[0003] However, in specific usage scenarios, there are still many safety hazards. When replacing gas terminal equipment, such as gas water heaters, stoves and other terminal equipment, it is necessary to reconnect the gas pipeline to the air inlet of the gas terminal equipment. At the connection node of the gas pipeline, it is easy to have loose connections and leaks. Whether the gas leaks or not depends on the experience of the maintenance personnel, especially when individuals replace gas terminal equipment by themselves. The simple judgment method is usually to apply foam water to the connection node and rely on the naked eye to judge whether there is a leak. Especially in the case of small flow leakage, the leakage is not easy to detect and it is extremely easy to misjudge. In addition, if the connection node leaks again after a period of use, there is currently no device that can continuously monitor and is easy to observe to solve the above problems.
[0004] Based on the above background, the inventor has designed an easily detectable gas leakage monitoring device for a gas pipeline connection node to solve one or more of the above problems. Utility Model Content
[0005] The purpose of the present application is to provide an easily detectable gas leakage monitoring device for a gas pipeline connection node, so as to solve the problem that small flow gas leakage at the gas pipeline connection node is difficult to detect, especially long-term continuous small flow leakage is difficult to monitor and detect.
[0006] Gas leak monitoring is not easy to detect.
[0007] In order to solve the above technical problems, the utility model adopts the following solutions:
[0008] The present application provides an easily observable gas leakage monitoring device for a gas pipeline connection node, comprising a shell having a cavity, and elastic skirts respectively sealed and fixedly connected to both ends of the shell;
[0009] It also includes at least two locking hoops for sealing and locking the elastic skirt on the first pipe and the second pipe;
[0010] It also includes a gas leakage monitoring structure connected to the cavity, and a gas leakage feedback structure connected to the gas leakage monitoring structure through a connecting pipe;
[0011] The leak monitoring structure is provided with a concentrated indicator liquid driven by air pressure changes;
[0012] The air leakage feedback structure comprises a transparent observation shell with transparent liquid arranged inside, a one-way valve is arranged on the transparent observation shell, and the transparent liquid is connected with the concentrated indicating liquid through a connecting pipe.
[0013] Optionally, the air leakage monitoring structure includes a monitoring tube body, a monitoring piston, a piston rod, a connecting tube, a partition plate and a movable plate, wherein:
[0014] The partition is arranged in the monitoring tube body and divides the monitoring tube body into two chambers. The monitoring piston is slidably connected in the monitoring tube body. The piston rod passes through the partition and is slidably connected thereto. The movable plate and the monitoring piston are respectively fixed at both ends of the piston rod.
[0015] The concentrated indicating liquid is contained in a chamber between the monitoring piston and the partition, and the connecting pipe is connected to a side of the partition close to the monitoring piston.
[0016] Optionally, the air leakage monitoring structure further includes a compression spring, which is sleeved on the monitoring piston rod and is located between the movable plate and the partition plate.
[0017] Optionally, the air leakage monitoring structure further includes an extension tube extending into the cavity, the extension tube is coaxially and integrally connected to the monitoring tube body, and the tube diameters are the same.
[0018] Optionally, the transparent observation shell is in the shape of a circular ring or a sector ring;
[0019] The transparent observation shell is fixedly connected to the housing, and the one-way valve is arranged on a side of the transparent observation shell away from the connecting pipe;
[0020] The transparent liquid is pure water.
[0021] Optionally, the transparent observation shell is in a circular shape and is fixedly mounted on the housing;
[0022] At least one circle of partition blocks for reducing liquid flow is arranged in the transparent observation shell.
[0023] Optionally, the shell is further provided with a gas extraction head body for extracting gas in its cavity;
[0024] The main body of the air extraction head comprises an elastic section and an air extraction head mouth tightener for tightening the elastic section, and the air extraction head mouth tightener is sleeved on the elastic section.
[0025] Optionally, the cross-sectional shape of the shell is circular;
[0026] The shell is made of plastic or rubber;
[0027] The transparent observation shell is made of plastic;
[0028] The elastic skirts are made of rubber.
[0029] Optionally, the elastic skirt has a trumpet shape or a circular shape.
[0030] Optionally, the locking clamp is an adjustable locking clamp.
[0031] Beneficial effects of the utility model:
[0032] 1. The present application provides a shell, an elastic skirt, a locking hoop, and a leakage monitoring structure and a leakage feedback structure. During the process of connecting the gas pipeline, the elastic skirts on both sides of the shell can be locked and fixed to the first pipeline and the second pipeline by using the locking hoop, so that the cavity in the shell becomes a closed cavity, and the connection node between the first pipeline and the second pipeline is completely covered and sealed. Since the leakage monitoring structure and the leakage feedback structure are provided, once a leakage occurs at the connection node between the first pipeline and the second pipeline, the air pressure change in the cavity will cause the concentrated indicator liquid of the leakage monitoring structure to flow into the transparent liquid and diffuse, so that the leakage at the connection node of the gas pipeline can be observed in time and accurately, and after the diffusion through the transparent liquid, the leakage is extremely easy to observe, effectively solving the problem that small flow leakage is difficult to observe.
[0033] 2. This application can leave the gas pipeline directly at the connection node after it is connected, which can not only play a long-term monitoring role, but also protect the subsequent use of the connection node. When a gas leak occurs at the connection node, it can avoid direct leakage into the air, thereby improving the leak-proof effect of the entire connection node.
[0034] 3. This application can evacuate the cavity in the shell by setting up a vacuum head main body and a vacuum head mouthpiece, so that the air pressure in the cavity is lower than the external atmospheric pressure, and the pressure difference between the air pressure in the gas pipeline and the air pressure in the cavity is expanded after the gas pipeline is connected, thereby improving the leak prevention and monitoring effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0035] Figure 1 It is a schematic diagram of the structure in the embodiment of the present application.
[0036] Figure 2 for Figure 1 A local enlarged schematic diagram of point A in the middle.
[0037] Explanation of the reference numerals: 1-first pipeline, 2-second pipeline, 3-connecting node, 4-shell, 401-cavity, 41-vacuum head body, 411-elastic section, 412-vacuum head mouthpiece, 42-leakage monitoring structure, 421-monitoring tube body, 422-monitoring piston, 423-piston rod, 424-compression spring, 425-movable plate, 426-partition, 427-connecting tube, 428-concentrated indicator liquid, 429-extension tube, 5-leakage feedback structure, 51-transparent observation shell, 52-transparent liquid, 53-one-way valve, 511-partition block, 6-elastic skirt, 7-locking hoop. DETAILED DESCRIPTION
[0038] The present invention will be further described in detail below in conjunction with the embodiments and drawings, but the implementation manner of the present invention is not limited thereto.
[0039] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inside", "outside", "front", "back", "top", "bottom", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, or are the directions or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model.
[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "open", "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.
[0042] like Figure 1 and Figure 2 As shown, this embodiment provides an easily observable gas leakage monitoring device for a gas pipeline connection node 3, comprising a housing 4 having a cavity 401, and elastic skirts 6 respectively sealed and fixedly connected to both ends of the housing 4;
[0043] It also includes at least two locking hoops 7 for sealing and locking the elastic skirt 6 on the first pipe 1 and the second pipe 2;
[0044] It also includes a gas leakage monitoring structure 42 communicated with the cavity 401, and a gas leakage feedback structure 5 communicated with the gas leakage monitoring structure 42 through a communication pipe 427;
[0045] The leakage monitoring structure 42 is provided with a concentrated indicator liquid 428 driven by air pressure changes;
[0046] The air leakage feedback structure 5 includes a transparent observation shell 51 with a transparent liquid 52 disposed therein. A one-way valve 53 is disposed on the transparent observation shell 51 . The transparent liquid 52 is connected to a concentrated indicating liquid 428 through a connecting pipe 427 .
[0047] In this embodiment, by providing a shell 4, an elastic skirt 6, a locking hoop 7, a gas leakage monitoring structure 42 and a gas leakage feedback structure 5, the elastic skirt 6 on both sides of the shell 4 can be locked and fixed to the first pipe 1 and the second pipe 2 by using the locking hoop 7 during the gas pipeline connection process, so that the cavity 401 in the shell 4 becomes a closed cavity 401, and the connection node 3 between the first pipe 1 and the second pipe 2 is completely covered and sealed. Since the gas leakage monitoring structure 42 and the gas leakage feedback structure 5 are provided, once a gas leakage occurs at the connection node 3 between the first pipe 1 and the second pipe 2, the air pressure change in the cavity 401 will cause the concentrated indicator liquid 428 of the gas leakage monitoring structure 42 to flow into the transparent liquid 52 and diffuse, so that the gas leakage at the gas pipeline connection node 3 can be observed in time and accurately, and after the diffusion through the transparent liquid 52, the gas leakage can be observed very easily, effectively solving the problem that small-flow gas leakage is difficult to observe.
[0048] In addition, after the device is installed, it can be directly left at the connection node 3 after the gas pipeline is connected. It can not only play a long-term monitoring effect, but also protect the subsequent use of the connection node 3. When a gas leak occurs at the connection node 3, it can avoid direct leakage into the air, thereby improving the leakage prevention effect of the entire connection node 3.
[0049] When in use, first, put the shell 4 and the elastic skirt 6 onto the first pipe 1 or the second pipe 2, slide it to one side, and then install the connection node 3. After the connection node 3 is installed, slide the shell 4 and the elastic skirt 6, and place the two elastic skirts 6 on the first pipe 1 and the second pipe 2 respectively, and then adjust the locking clamp 7 to make the cavity 401 in the shell 4 in a closed state, and then use a vacuum pump to extract the air in the cavity 401 to expand the air pressure difference between the cavity 401 and the gas pipeline, and the installation is completed.
[0050] Specifically, Figure 1 and Figure 2As shown, in this embodiment, the air leakage monitoring structure 42 includes a monitoring tube body 421, a monitoring piston 422, a piston rod 423, a connecting tube 427, a partition plate 426 and a movable plate 425, wherein:
[0051] The partition plate 426 is disposed in the monitoring tube body 421 and divides the monitoring tube body 421 into two chambers. The monitoring piston 422 is slidably connected in the monitoring tube body 421. The piston rod 423 penetrates the partition plate 426 and is slidably connected thereto. The movable plate 425 and the monitoring piston 422 are respectively fixed at both ends of the piston rod 423.
[0052] The concentrated indicator liquid 428 is contained in a chamber between the monitoring piston 422 and the partition 426 , and the connecting pipe 427 is connected to a side of the partition 426 close to the monitoring piston 422 .
[0053] After a portion of the air in the cavity 401 is extracted by the vacuum pump, under the action of the air pressure difference, the monitoring piston 422 drives the piston rod 423 to move in the direction of the cavity 401. At this time, the movable plate 425 pushes the compression spring 424 to store energy. Once a leak occurs at the connecting node 3, the pressure in the cavity 401 of the shell 4 increases, so that the compression spring 424 will push the movable plate 425 to move. After cooperating with the increased air pressure in the cavity 401, the monitoring piston 422 is driven to move in the direction of the compression spring 424. At this time, the concentrated liquid is driven and poured into the transparent liquid 52 through the connecting pipe 427 to mix with it. At this time, the transparent liquid 52 changes color, and the leak of the connecting node 3 can be accurately and timely judged.
[0054] The concentrated indicator liquid 428 can be a colored concentrated liquid such as black, red, blue, green, etc., which is convenient for observation and detection. In this embodiment, a black concentrated liquid is used, specifically a high-concentration ink.
[0055] Specifically, Figure 2 As shown, the air leakage monitoring structure 42 further includes a compression spring 424, which is sleeved on the monitoring piston 422 rod and is located between the movable plate 425 and the partition 426. By providing the compression spring 424, the pressure of the concentrated liquid driven by the piston to be poured into the transparent liquid 52 through the connecting pipe 427 can be increased, thereby improving the monitoring effect.
[0056] Specifically, Figure 2 As shown, the air leakage monitoring structure 42 also includes an extension tube 429 extending into the cavity 401. The extension tube 429 is coaxially connected to the monitoring tube body 421 and has the same tube diameter. By providing the extension tube 429, it is possible to prevent the concentrated liquid from leaking into the cavity 401 when the concentrated liquid extracts the air in the cavity 401, thereby affecting the judgment result.
[0057] Specifically, the transparent observation shell 51 is in the shape of a circular ring or a sector ring;
[0058] The transparent observation shell 51 is fixedly connected to the housing 4, and the one-way valve 53 is arranged on a side of the transparent observation shell 51 away from the connecting pipe 427;
[0059] The transparent liquid 52 is pure water. In this embodiment, the transparent observation shell 51 is in a circular shape, which is convenient for observation without blind spots, and at the same time ensures a large observable area to improve the eye-catching effect.
[0060] Specifically, Figure 2 As shown, in this embodiment, the transparent observation shell 51 is in a circular shape and is fixedly mounted on the housing 4;
[0061] At least one circle of partition blocks 511 for reducing the flow of liquid is arranged in the transparent observation shell 51. By setting the partition blocks 511, the flow speed of liquid can be reduced, which can facilitate the observer to roughly judge the severity of the air leakage.
[0062] Specifically, Figure 1 As shown, in this embodiment, the housing 4 is further provided with a gas extraction head body 41 for extracting the gas in the cavity 401 thereof;
[0063] The main body 41 of the vacuum head includes an elastic section 411 and a vacuum head mouth tightener 412 for tightening the elastic section 411, and the vacuum head mouth tightener 412 is mounted on the elastic section 411. By providing the vacuum head main body 41 and the vacuum head mouth tightener 412, the cavity 40140 in the shell 4 can be evacuated to make the air pressure in the cavity 401 lower than the external atmospheric pressure, and the pressure difference between the air pressure in the gas pipeline and the air pressure in the cavity 401 is increased after the gas pipeline is connected, thereby improving the leak prevention monitoring effect.
[0064] The elastic section 411 can be provided to lock the exhaust port of the shell 44, ensuring that the air pressure in the cavity 401 of the shell 4 is continuously lower than the external atmospheric pressure, ensuring a continuous pressure difference between the gas pipeline and the cavity 401, and ensuring a long-term leak-proof monitoring effect.
[0065] Specifically, the cross-sectional shape of the housing 4 is circular;
[0066] The shell 4 is made of plastic or rubber;
[0067] The transparent observation shell 51 is made of plastic;
[0068] The elastic skirt 6 is made of rubber. In this embodiment, the shell 4 is cylindrical, and in some embodiments, the shell 4 may also be drum-shaped. In some embodiments, the cross-sectional shape of the shell 4 may also be rectangular, regular hexagonal, etc., which will not be described in detail.
[0069] In this embodiment, the shell 4 and the transparent observation shell 51 are both made of plastic, and the elastic skirt 6 is fixed to the shell 4 by bonding.
[0070] Optionally, the elastic skirt 6 is in the shape of a trumpet or a circle. Figure 1 As shown, in this embodiment, a trumpet-shaped elastic skirt 6 is used to improve the anti-leakage effect after the locking hoop 7 is locked and fixed. The technicians can also choose to use a circular elastic skirt 6 to increase the length of the elastic skirt 6 and the number of locking hoops 7.
[0071] Specifically, Figure 1 As shown, the locking clamp 7 is an adjustable locking clamp 7. The locking clamp 7 is an adjustable locking clamp 7, which can improve the adaptability to the size of the gas pipeline. In this embodiment, the adjustable locking clamp 7 can be made of plastic or metal. The locking clamp 7 is an existing conventional tooling component and is not described here.
[0072] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, but the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.
Claims
1. A gas pipeline connection node (3) easy-to-observe gas leakage monitoring device, characterized in that: It comprises a shell (4) having a cavity (401), and elastic skirts (6) respectively sealed and fixedly connected to two ends of the shell (4); It also includes at least two locking hoops (7) for sealing and locking the elastic skirt (6) on the first pipe (1) and the second pipe (2); It also includes a gas leakage monitoring structure (42) connected to the cavity (401), and a gas leakage feedback structure (5) connected to the gas leakage monitoring structure (42) via a connecting pipe (427); A concentrated indicator liquid (428) driven by air pressure changes is arranged in the air leakage monitoring structure (42); The gas leakage feedback structure (5) comprises a transparent observation shell (51) in which a transparent liquid (52) is arranged. A one-way valve (53) is arranged on the transparent observation shell (51). The transparent liquid (52) is connected to a concentrated indicator liquid (428) via a connecting pipe (427).
2. A gas pipeline connection node (3) easy-to-observe gas leakage monitoring device according to claim 1, characterized in that: The air leakage monitoring structure (42) comprises a monitoring tube body (421), a monitoring piston (422), a piston rod (423), a connecting tube (427), a partition plate (426) and a movable plate (425), wherein: The partition (426) is arranged in the monitoring tube body (421) and divides the monitoring tube body (421) into two chambers. The monitoring piston (422) is slidably connected in the monitoring tube body (421). The piston rod (423) passes through the partition (426) and is slidably connected thereto. The movable plate (425) and the monitoring piston (422) are respectively fixed to two ends of the piston rod (423). The concentrated indicator liquid (428) is contained in a chamber between the monitoring piston (422) and the partition (426), and the connecting pipe (427) is connected to a side of the partition (426) close to the monitoring piston (422).
3. The easily observable gas leakage monitoring device for a gas pipeline connection node (3) according to claim 2, characterized in that: The air leakage monitoring structure (42) further comprises a compression spring (424), which is sleeved on the rod of the monitoring piston (422), and the compression spring (424) is located between the movable plate (425) and the partition plate (426).
4. The easily observable gas leakage monitoring device for a gas pipeline connection node (3) according to claim 2, characterized in that: The air leakage monitoring structure (42) further comprises an extension tube (429) extending into the cavity (401); the extension tube (429) is coaxially and integrally connected to the monitoring tube body (421), and the tube diameters are the same.
5. The easily observable gas leakage monitoring device for a gas pipeline connection node (3) according to claim 1, characterized in that: The transparent observation shell (51) is in the shape of a circular ring or a sector ring; The transparent observation shell (51) is fixedly connected to the housing (4), and the one-way valve (53) is arranged on a side of the transparent observation shell (51) away from the connecting pipe (427); The transparent liquid (52) is pure water.
6. The easily observable gas leakage monitoring device for a gas pipeline connection node (3) according to claim 5, characterized in that: The transparent observation shell (51) is in the shape of a ring and is sleeved and fixed on the housing (4); At least one circle of partition blocks (511) for reducing the flow of liquid is arranged inside the transparent observation shell (51).
7. The easily observable gas leakage monitoring device for a gas pipeline connection node (3) according to claim 1, characterized in that: The housing (4) is also provided with a gas extraction head body (41) for extracting gas from the cavity (401) thereof; The air extraction head body (41) comprises an elastic section (411) and an air extraction head mouth tightener (412) for tightening the elastic section (411); the air extraction head mouth tightener (412) is sleeved on the elastic section (411).
8. The easily observable gas leakage monitoring device for a gas pipeline connection node (3) according to claim 1, characterized in that: The cross-sectional shape of the shell (4) is annular; The shell (4) is made of plastic or rubber; The transparent observation shell (51) is made of plastic; The elastic skirt (6) is made of rubber.
9. The easily observable gas leakage monitoring device for a gas pipeline connection node (3) according to claim 1, characterized in that: The elastic skirt (6) is in the shape of a trumpet or a circle.
10. The easily observable gas leakage monitoring device for a gas pipeline connection node (3) according to claim 1, characterized in that: The locking clamp (7) is an adjustable locking clamp (7).