Leak-proof device for gas pipeline

Abstract

The utility model belongs to gas pipeline anti -leakage technical field, specifically is a kind of gas pipeline anti -leakage device, including first pipeline, install protective assembly on the first pipeline and second pipeline;First sealing pad is installed in the buckling place of first shell and second shell, gas leakage detector is installed on the outer wall of second shell by connecting block, alarm is installed on the gas leakage detector, gas leakage detector is connected with gas guide pipe, when gap leaks, the gas of leakage is sealed in first shell and second shell, the gas of leakage cannot leak to operating environment, avoid the health of human body from harm, simultaneously, the gas of leakage enters into gas leakage detector by gas guide pipe, after gas leakage detector detects the gas of leakage, alarm will send alarm signal, realizes the gas of leakage to carry out timely collection and detection, it is beneficial to improve the anti -leakage effect of device to gas.

Description

Technical Field

[0001] This utility model relates to the field of gas pipeline leak prevention technology, specifically a gas pipeline leak prevention device. Background Technology

[0002] Specialty gases refer to pure gases, high-purity gases, or binary / multi-component mixtures of high-purity elemental gases that are used in specific fields and have special requirements for purity, type, or properties. When special gases are transported to the laboratory, due to the long pipelines, leak-proof devices are required to reinforce the two gas pipelines.

[0003] Chinese patent CN 222229816 U discloses a device for preventing leaks in natural gas pipelines. This device includes a first pipeline with a sealing ring connected to one side. A clamping ring is connected to the inner cavity of the sealing ring, and a second pipeline is connected to one side of the clamping ring. Installation mechanisms are provided on both sides of the sealing ring for quick and sealed installation of the first and second pipelines. A clamping block is connected to one side of the clamping ring. The installation mechanism includes a positioning shell, one side of which is connected to the sealing ring. A spring assembly is connected to the inner cavity of the positioning shell, one side of which is connected to a clamping plate. One side of the clamping plate is connected to the clamping block, and one side of the clamping plate is connected to a movable rod. One side of the movable rod extends through to one side of the positioning shell and is connected to a pull plate. This invention provides a natural gas pipeline leak prevention device that solves the problem that existing devices lack the ability to be easily disassembled in case of a leak.

[0004] Existing leak prevention devices typically reinforce two gas pipelines to prevent leaks, but they cannot collect and detect leaked gas in a timely manner, resulting in poor leak prevention performance. Therefore, a leak prevention device for gas pipelines is proposed to address the above problems. Utility Model Content

[0005] In order to overcome the shortcomings of the existing technology and solve the problems existing in the existing technology, this utility model proposes a leak prevention device for gas pipelines.

[0006] The technical solution adopted by this utility model to solve its technical problem is a gas pipeline leak prevention device, including a first pipeline, a connector installed on the first pipeline, and a second pipeline connected to the other end of the connector. Protective components are installed on the first and second pipelines. The protective components include a first housing, a second housing fastened to the first housing, a first sealing gasket installed at the fastening point of the first and second housings, sealing half-pipes installed on both sides of the first and second housings, a second sealing gasket installed on the inner wall of the sealing half-pipes, a PLC controller installed on the second housing, a gas leak detector installed on the outer wall of the second housing via a connecting block, an alarm installed on the gas leak detector, and a gas guide tube connected to the gas leak detector, the other end of which is fixedly connected to the second housing. Next, multiple first rod seats are installed on the side wall of the first housing, and threaded holes are opened in the first rod seats. Multiple second rod seats are installed on the side wall of the second housing, and threaded holes are opened in the second rod seats. Screws are assembled in the threaded holes of the first and second rod seats. Annular grooves are opened on the outer walls of the first and second pipes, and sealing rings are installed on the inner walls of the annular grooves. When a leak occurs, the leaked gas is sealed in the first and second housings, preventing the leaked gas from leaking into the working environment and avoiding harm to human health. At the same time, the leaked gas enters the gas leak detector through the gas guide pipe. After the gas leak detector detects the leaked gas, the alarm will sound an alarm signal, realizing timely collection and detection of leaked gas, which is beneficial to improving the gas leak prevention effect of the device.

[0007] Preferably, the connector includes a fixed pipe with connecting pipes fixedly connected to both sides. A flange is provided on the inner wall of the connecting pipe, and an annular sealing gasket is installed on the inner walls of both the connecting pipe and the fixed pipe. An installation groove is formed on the outer wall of the connecting pipe, and a clamp is fitted within the installation groove. The clamp includes two fastening semi-rings, with connectors at both ends. Threaded holes are formed in the connectors, and bolts are installed on the connectors. The two fastening semi-rings are fixedly connected by bolts. After the flange of the connecting pipe is engaged in the annular groove of the first and second pipes, the clamp is installed in the installation groove of the connecting pipe. The connecting pipe deforms under the pressure of the clamp, thus sealing the first and second pipes. This structure allows for convenient reinforcement of two gas pipelines and ensures a tight connection, improving the ease of reinforcement of the two gas pipelines.

[0008] The advantages of this utility model are: 1. This utility model, when a leak occurs, seals the leaking gas within the first and second housings, preventing it from entering the working environment and thus avoiding harm to human health. Simultaneously, the leaking gas enters the gas leak detector through a gas guide pipe. Upon detection of the leaking gas, the gas leak detector will issue an alarm signal, enabling timely collection and detection of the leaking gas and improving the device's gas leak prevention effect.

[0009] 2. In this utility model, after the flange of the connecting pipe is inserted into the annular groove of the first and second pipes, the clamp is installed in the mounting groove of the connecting pipe. The connecting pipe is deformed by the pressure of the clamp, which produces a sealing effect on the first and second pipes. This structure can conveniently reinforce two gas pipes and ensure the sealing of the connection, which is beneficial to improving the convenience of reinforcing two gas pipes. Attached Figure Description

[0010] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0011] Figure 1 This is a first-person perspective 3D structural diagram; Figure 2 This is a schematic diagram of the internal three-dimensional structure of the first shell. Figure 3 This is a schematic diagram of the three-dimensional structure at the connecting pipe. Figure 4 This is a schematic diagram of the three-dimensional structure of the connector; Figure 5 This is a schematic diagram of the internal three-dimensional structure of the connector.

[0012] In the diagram: 1. First pipe; 2. Connector; 3. Second pipe; 4. First housing; 401. Second housing; 402. First sealing gasket; 403. Sealing half-pipe; 404. Second sealing gasket; 405. First rod seat; 406. Second rod seat; 407. Screw; 408. PLC controller; 409. Gas leak detector; 410. Alarm; 411. Gas guide pipe; 5. Annular groove; 501. Sealing ring; 201. Fixing pipe; 202. Connecting pipe; 203. Flange; 204. Annular sealing gasket; 205. Mounting groove; 206. Fastening half-ring; 207. Fastening half-ring; 208. Bolt. Detailed Implementation

[0013] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0014] Please see Figure 1-2As shown, a gas pipeline leak-proof device includes a first pipeline 1, a connector 2 installed on the first pipeline 1, and a second pipeline 3 connected to the other end of the connector 2. Protective components are installed on the first pipeline 1 and the second pipeline 3. The protective components include a first housing 4, a second housing 401 fastened to the first housing 4, a first sealing gasket 402 installed at the fastening point of the first housing 4 and the second housing 401, sealing half-pipes 403 installed on both sides of the first housing 4 and the second housing 401, second sealing gaskets 404 installed on the inner wall of the sealing half-pipes 403, a PLC controller 408 installed on the second housing 401, and a connecting block installed on the outer wall of the second housing 401. There is a gas leak detector 409, an alarm 410 is installed on the gas leak detector 409, a gas duct 411 is connected to the gas leak detector 409, and the other end of the gas duct 411 is fixedly connected to the second housing 401. Multiple first rod seats 405 are installed on the side wall of the first housing 4, and threaded holes are opened in the first rod seats 405. Multiple second rod seats 406 are installed on the side wall of the second housing 401, and threaded holes are opened in the second rod seats 406. Screws 407 are assembled in the threaded holes of the first rod seats 405 and the second rod seats 406. Annular grooves 5 are opened on the outer walls of the first pipe 1 and the second pipe 3, and sealing rings 501 are installed on the inner walls of the annular grooves 5.During operation, existing leak-proof devices typically reinforce two gas pipelines to prevent leaks, but they cannot collect and detect leaked gas in a timely manner, resulting in poor leak-proof performance. When transporting special gases to the laboratory, due to the long pipelines, a leak-proof device is needed to reinforce the two gas pipelines. This is achieved by reinforcing the first pipeline 1 and the second pipeline 3 with connector 2, then fastening the first housing 4 and the second housing 401 onto the first pipeline 1 and the second pipeline 3. Multiple screws 407 are then screwed into the first rod seat 405 and the second rod seat 406, thus fixing the first housing 4 and the second housing 401 together. A first sealing gasket 402 is installed at the fastening point of the first housing 4 and the second housing 401 to ensure a sealed connection. The sealing half-pipes 403 at both ends of the first housing 4 and the second housing 401 are sealed to the first pipeline 1 and the second pipeline 3 via second sealing gaskets 404. The sealing connection ensures the airtightness of the first housing 4 and the second housing 401. Gas leakage is common at the gaps where the first pipe 1, the second pipe 3, and the connector 2 connect. Since the connection is located inside the first housing 4 and the second housing 401, during the ventilation process inside the first pipe 1 and the second pipe 3, when a leak occurs, the leaking gas is intercepted by the first housing 4 and the second housing 401 and sealed within them. The leaked gas will not leak into the working environment, avoiding harm to human health. Simultaneously, the leaked gas enters the gas leak detector 409 through the gas guide pipe 411. The gas leak detector 409 (model GTYQ-BNTLCD) detects the leak and sends a signal to the PLC controller 408. Upon receiving the signal, the PLC controller 408 activates the alarm 410 (model Honeywell JKH-201), which emits an alarm signal. This timely collection and detection of leaked gas improves the device's gas leak prevention effect.

[0015] Please see Figure 3-5As shown, the connector 2 includes a fixed pipe 201, with connecting pipes 202 fixedly connected to both sides of the fixed pipe 201. A flange 203 is provided on the inner wall of the connecting pipe 202. An annular sealing gasket 204 is installed on the inner walls of both the connecting pipe 202 and the fixed pipe 201. An installation groove 205 is provided on the outer wall of the connecting pipe 202. A clamping component is fitted inside the installation groove 205. The clamping component includes two fastening semi-rings 206, with connectors 207 at both ends. Threaded holes are provided inside the connectors. Bolts 208 are installed on 207, and two fastening semi-rings 206 are fixedly connected by bolts 208. During operation, existing leak-proof devices typically reinforce two gas pipelines to prevent leaks, but this method is not convenient for reinforcing the two gas pipelines, resulting in poor ease of reinforcement. By adapting the connecting pipes 202 at both ends of the connector 2 to the structure of the first pipeline 1 and the second pipeline 3, the first pipeline 1 and the second pipeline 3 are respectively inserted into both ends of the connector 2. Inside the connecting pipe 202, under the action of the annular sealing gasket 204, the connecting pipe 202 is tightly fitted to the outer wall of the first pipe 1 and the second pipe 3 until the flange 203 of the connecting pipe 202 is stuck in the annular groove 5 of the first pipe 1 and the second pipe 3. Since the annular groove 5 is shallow, the flange 203 can be removed from the annular groove 5 without affecting the ease of disassembly. After the flange 203 of the connecting pipe 202 is stuck in the annular groove 5 of the first pipe 1 and the second pipe 3, the clamp is installed in the mounting groove 205 of the connecting pipe 202. During installation, the clamp is installed by fastening two fastening half rings 206 onto the mounting groove 205, and then using bolts 208 to fix the connector 207 of the fastening half rings 206. The connecting pipe 202 deforms due to the pressure of the clamp, thus sealing the first pipe 1 and the second pipe 3. This structure can easily reinforce the two gas pipes and ensure the sealing of the connection, which is beneficial to improving the ease of reinforcing the two gas pipes.

[0016] Working principle: Existing leak-proof devices typically reinforce two gas pipelines to prevent leaks, but they cannot collect and detect leaked gas in a timely manner, resulting in poor leak-proof performance. When transporting special gases to the laboratory, due to the long pipeline, a leak-proof device is needed to reinforce the two gas pipelines. The first pipeline 1 and the second pipeline 3 are reinforced by connector 2. Then, the first housing 4 and the second housing 401 are fastened onto the first pipeline 1 and the second pipeline 3. Multiple screws 407 are then screwed into the first rod seat 405 and the second rod seat 406, achieving a fixed connection between the first housing 4 and the second housing 401. A first sealing gasket 402 is installed at the fastening point of the first housing 4 and the second housing 401 to ensure a sealed connection. The sealing half-pipes 403 at both ends of the first housing 4 and the second housing 401 are connected to the first pipeline 1 and the second pipeline 3 via second sealing gaskets 404. The sealed connection ensures the tightness of the engagement between the first housing 4 and the second housing 401. Gas leakage is common at the gaps where the first pipe 1, the second pipe 3, and the connector 2 are connected. Since the connection is located inside the first housing 4 and the second housing 401, when gas leaks during the ventilation process inside the first pipe 1 and the second pipe 3, the leaking gas is intercepted by the first housing 4 and the second housing 401 and sealed inside them. The leaked gas will not leak into the working environment, thus avoiding harm to human health. At the same time, the leaked gas enters the gas leak detector 409 through the gas guide pipe 411. The gas leak detector 409 is a GTYQ-BNTLCD model. After detecting the leaked gas, the gas leak detector 409 sends a signal to the PLC controller 408. After receiving the signal, the PLC controller 408 controls the alarm 410 to be activated. The alarm 410 is a Honeywell JKH-201 model. This enables timely collection and detection of leaked gas, which helps improve the gas leak prevention effect of the device.Existing leak-proof devices typically reinforce two gas pipelines during gas pipeline protection, but this method lacks convenient reinforcement options for both pipelines, resulting in poor ease of reinforcement. By adapting the connecting pipes 202 at both ends of the connector 2 to the structure of the first pipeline 1 and the second pipeline 3, and inserting the first pipeline 1 and the second pipeline 3 into the connecting pipes 202 at both ends of the connector 2, the connecting pipes 202 are tightly fitted to the outer walls of the first pipeline 1 and the second pipeline 3 under the action of the annular sealing gasket 204, until the flange 203 of the connecting pipe 202 is engaged within the annular groove 5 of the first pipeline 1 and the second pipeline 3. Because the annular groove 5 is shallow, the flange 203 can be easily removed from the annular groove. Removing the groove 5 does not affect the ease of disassembly. After the flange 203 of the connecting pipe 202 is inserted into the annular groove 5 of the first pipe 1 and the second pipe 3, the clamp is installed in the mounting groove 205 of the connecting pipe 202. During installation, the clamp is installed by fastening two fastening half-rings 206 onto the mounting groove 205, and then using bolts 208 to fix the connector 207 of the fastening half-rings 206. The connecting pipe 202 deforms under the pressure of the clamp, thus sealing the first pipe 1 and the second pipe 3. This structure allows for convenient reinforcement of the two gas pipes and ensures a tight seal, improving the ease of reinforcement of the two gas pipes.

[0017] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A leak-proof device for gas pipelines, characterized in that: It includes a first pipe (1), a connector (2) is installed on the first pipe (1), the other end of the connector (2) is connected to a second pipe (3), and protective components are installed on the first pipe (1) and the second pipe (3); The protective assembly includes a first housing (4), a second housing (401) fastened to the first housing (4), a first sealing gasket (402) installed at the fastening point of the first housing (4) and the second housing (401), sealing half tubes (403) installed on both sides of the first housing (4) and the second housing (401), a second sealing gasket (404) installed on the inner wall of the sealing half tube (403), a PLC controller (408) installed on the second housing (401), a gas leak detector (409) installed on the outer wall of the second housing (401) via a connecting block, an alarm (410) installed on the gas leak detector (409), a gas duct (411) connected to the gas leak detector (409), and the other end of the gas duct (411) fixedly connected to the second housing (401). A plurality of first rod seats (405) are installed on the side wall of the first housing (4), and threaded holes are provided in the first rod seats (405). A plurality of second rod seats (406) are installed on the side wall of the second housing (401), and threaded holes are provided in the second rod seats (406). Screws (407) are assembled in the threaded holes of the first rod seats (405) and the second rod seats (406). The outer walls of the first pipe (1) and the second pipe (3) are provided with annular grooves (5), and a sealing ring (501) is installed on the inner wall of the annular grooves (5). The connector (2) includes a fixing tube (201), and connecting tubes (202) are fixedly connected to both sides of the fixing tube (201); A flange (203) is provided on the inner wall of the connecting pipe (202), and an annular sealing gasket (204) is installed on the inner walls of the connecting pipe (202) and the fixing pipe (201). The outer wall of the connecting pipe (202) is provided with an installation groove (205), and a clamp is installed in the installation groove (205). The clamp includes two fastening half rings (206), and the two ends of the fastening half rings (206) are connectors (207). The connectors (207) are provided with threaded holes, and bolts (208) are installed on the connectors (207). The two fastening half rings (206) are fixedly connected by bolts (208).

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