Natural gas pipeline leakproof device

Abstract

The utility model provides a natural gas pipeline leakproof device, which belongs to the technical field of natural gas pipeline maintenance, is used for being installed at the butt joint of a first gas pipeline and a second gas pipeline, and comprises a rubber sleeve, a first magnetic ring and a second magnetic ring, an air cavity is formed in the rubber sleeve, and an inflation opening is formed in the periphery of the rubber sleeve. The first magnetic ring is fixedly connected to one shaft end of the rubber sleeve; the second magnetic ring is fixedly connected to the other shaft end of the rubber sleeve; wherein the first magnetic ring is fixed to the periphery of the first gas pipeline in a magnetic attraction mode, the second magnetic ring is fixed to the periphery of the second gas pipeline in a magnetic attraction mode, and the rubber sleeve is arranged on the periphery of the butt joint position of the first gas pipeline and the second gas pipeline in a sleeving mode. The natural gas pipeline leakproof device is reliable in connection and convenient to operate; and the butt joint position of the gas pipeline is sealed through the expanded rubber sleeve, and the sealing effect is good.

Description

Technical Field

[0001] The utility model belongs to the technical field of natural gas pipeline maintenance, and in particular relates to a natural gas pipeline anti-leakage device. Background Art

[0002] When installing the natural gas pipeline, two adjacent sections of the pipeline are butted together by flange connection. The butt joint is very susceptible to corrosion due to moisture and other conditions. The corroded flange position will cause natural gas leakage, posing a major safety hazard. Once an accident occurs, it will cause significant property and personal loss. Sealing tape is usually wrapped around the flange connection, but the tape will age with use and has a short service life. The aged tape will inevitably be corroded and damaged by water ingress at the flange connection, resulting in poor anti-leakage effect. In addition, since the sealing tape is usually wrapped multiple times, it needs to be rewound once maintenance is required, and the operation process is cumbersome. Utility Model Content

[0003] The embodiment of the utility model provides a natural gas pipeline anti-leakage device, which aims to solve the technical problems that the existing natural gas pipeline is prone to leakage when connected by flange, the sealing effect of the flange position by winding sealing tape is poor, and it is inconvenient to carry out maintenance.

[0004] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is: to provide a natural gas pipeline anti-leakage device, which is used to be installed at the joint of a first gas pipeline and a second gas pipeline, comprising:

[0005] The rubber sleeve is an annular columnar structure, wherein an air cavity is provided inside the rubber sleeve, and an inflation port is provided on the outer periphery of the rubber sleeve;

[0006] A first magnetic ring is fixedly connected to one axial end of the rubber sleeve;

[0007] A second magnetic ring is fixedly connected to the other axial end of the rubber sleeve;

[0008] The first magnetic ring is magnetically fixed to the outer periphery of the first gas pipeline, the second magnetic ring is magnetically fixed to the outer periphery of the second gas pipeline, and the rubber sleeve is arranged on the outer periphery of the joint between the first gas pipeline and the second gas pipeline.

[0009] In a possible implementation, a gas detector is provided on the inner circumferential surface of the rubber sleeve, and the gas detector corresponds to the joint between the first gas pipeline and the second gas pipeline.

[0010] In a possible implementation, the first magnetic ring and the second magnetic ring each include two concentric arc-shaped magnetic strips and two elastic ropes, wherein one elastic rope is fixed between one end of the two magnetic strips, and the other elastic rope is fixed between the other ends of the two magnetic strips, and the elastic ropes protrude from the inner circumference of the magnetic strips or are flush with the inner circumference of the magnetic strips.

[0011] In a possible implementation, the inner circumferential surface of the end of each arc-shaped magnetic strip is provided with a slot and a clamping block cooperating with the slot, the end of the elastic rope is placed in the slot, and the clamping block is used to press and fix the elastic rope in the slot.

[0012] In a possible implementation, a first limiting groove cooperating with the first magnetic ring is provided on the first gas pipeline, and a second limiting groove cooperating with the second magnetic ring is provided on the second gas pipeline.

[0013] In a possible implementation, the first magnetic ring and the second magnetic ring further include a fixed block, the fixed block on the first magnetic ring is clamped with the first limiting groove, the fixed block on the second magnetic ring is clamped with the first limiting groove, the fixed block abuts between the two magnetic strips and presses the outer circumference of the elastic rope.

[0014] In a possible implementation, a one-way valve is provided on the inflation port, and the one-way valve is used to allow air to flow into the air cavity in one direction.

[0015] In a possible implementation, the natural gas pipeline anti-leakage device further includes:

[0016] A pressure sensor is arranged on the inner circumference of the rubber sleeve;

[0017] an air pump, communicatively connected to the pressure sensor;

[0018] When the reading of the pressure sensor is lower than a preset value, the air pump is turned on to inflate the air cavity until the reading of the pressure sensor is equal to or greater than the preset value.

[0019] In a possible implementation, the natural gas pipeline anti-leakage device further includes an indicator light, which is communicatively connected to the pressure sensor, and when the pressure sensor reading is lower than a preset value, the indicator light changes color.

[0020] In a possible implementation, connecting flanges are provided on opposite sides of the first gas pipeline and the second gas pipeline, and the two connecting flanges are connected by a threaded connector, wherein an end surface of one connecting flange facing the other connecting flange is provided with an annular protrusion, and the other connecting flange is provided with a matching groove corresponding to the annular protrusion, and a sealing ring is provided on the outer periphery of the protrusion, and the sealing ring and the protrusion are both located in the matching groove.

[0021] Compared with the prior art, the method adopted in the embodiment of the present application is that after the first gas pipeline and the second gas pipeline are connected and installed, the first magnetic ring can be magnetically fixed to the first gas pipeline and the second magnetic ring can be magnetically fixed to the second gas pipeline, and the rubber sleeve completes the installation of the outer periphery of the connection between the first gas pipeline and the second gas pipeline, and the air is inflated into the air cavity through the inflation port until the rubber sleeve abuts against the outer periphery of the connection between the first gas pipeline and the second gas pipeline, and the extrusion force is appropriate, so as to complete the sealing of the connection between the first gas pipeline and the second gas pipeline. The utility model gas pipeline anti-leakage device is installed with the gas pipeline through the magnetic ring, and the connection is reliable and easy to operate; if the gas pipeline needs to be inspected and repaired, the inflation port is opened to release the gas in the air cavity so that it can be easily disassembled, and the use is more flexible; the gas pipeline is sealed at the connection point by the expanded rubber sleeve, and the sealing effect is good and the cost is low. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic cross-sectional structure diagram of a natural gas pipeline anti-leakage device provided by an embodiment of the utility model;

[0023] Figure 2 For along Figure 1 Schematic diagram of the cross-sectional structure along the AA line;

[0024] Figure 3 This is a right view of the first gas pipeline used in the embodiment of the utility model ( Figure 1 Schematic diagram of the structure (right view perspective).

[0025] Description of reference numerals:

[0026] 10-First gas pipeline;

[0027] 20- Second gas pipeline;

[0028] 30- rubber sleeve; 31- air cavity; 32- inflation port;

[0029] 40-first magnetic ring; 41-second magnetic ring; 42-magnetic strip; 43-elastic rope; 44-clamp block; 45-fixed block;

[0030] 50-Gas detector;

[0031] 60-pressure sensor; 61-air pump;

[0032] 70-indicator light;

[0033] 80-connecting flange; 81-protrusion; 82-sealing ring. DETAILED DESCRIPTION

[0034] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0035] In the claims, specification and the above drawings of the present utility model, unless otherwise clearly defined, the terms "first", "second" or "third" are used to distinguish different objects, rather than to describe a specific order. In the claims, specification and the above drawings of the present utility model, the term "inside" refers to the direction toward the gas pipeline, and the term "outside" refers to the direction away from the gas pipeline; the remaining directional words, unless otherwise clearly defined, are based on the orientation and positional relationship shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so they cannot be understood as limiting the specific protection scope of the present utility model.

[0036] In the claims, specification and the above drawings of the utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0037] In the claims, specification and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0038] Please also read Figures 1 to 3 The natural gas pipeline anti-leakage device provided by the utility model is now described. The natural gas pipeline anti-leakage device is used to be installed at the joint of the first gas pipeline 10 and the second gas pipeline 20, and includes a rubber sleeve 30, a first magnetic ring 40 and a second magnetic ring 41. The rubber sleeve 30 is an annular columnar structure, and an air cavity 31 is provided inside the rubber sleeve 30. The outer periphery of the rubber sleeve 30 is provided at the inflation port 32; the first magnetic ring 40 is fixed to one axial end of the rubber sleeve 30; the second magnetic ring 41 is fixed to the other axial end of the rubber sleeve 30;

[0039] The first magnetic ring 40 is magnetically fixed to the outer periphery of the first gas pipeline 10 , the second magnetic ring 41 is magnetically fixed to the outer periphery of the second gas pipeline 20 , and the rubber sleeve 30 is sleeved on the outer periphery of the joint between the first gas pipeline 10 and the second gas pipeline 20 .

[0040] Compared with the prior art, the gas pipeline leakage prevention device provided in this embodiment is that after the first gas pipeline 10 and the second gas pipeline 20 are docked and installed, the first magnetic ring 40 can be magnetically fixed to the first gas pipeline 10, and the second magnetic ring 41 can be magnetically fixed to the second gas pipeline 20, then the rubber sleeve 30 completes the installation of the outer periphery of the docking point of the first gas pipeline 10 and the second gas pipeline 20, and the air is inflated into the air cavity 31 through the inflation port 32 until the rubber sleeve 30 abuts against the outer periphery of the docking point of the first gas pipeline 10 and the second gas pipeline 20, and the extrusion force is appropriate, and the sealing of the docking point of the first gas pipeline 10 and the second gas pipeline 20 is completed. The utility model gas pipeline leakage prevention device is installed with the gas pipeline through the magnetic ring, and the connection is reliable and easy to operate; if the gas pipeline needs to be repaired, the inflation port 32 is opened to release the gas in the air cavity 31, so that it can be easily disassembled, and the use is more flexible; the docking point of the gas pipeline is sealed by the expanded rubber sleeve 30, and the sealing effect is good and the cost is low.

[0041] In some embodiments, an improved embodiment of the rubber sleeve 30 can be as follows: Figure 1 See the structure shown. Figure 1 A gas detector 50 is provided on the inner circumference of the rubber sleeve 30, and the gas detector 50 corresponds to the joint of the first gas pipeline 10 and the second gas pipeline 20. By providing the gas detector 50, once a gas leak occurs at the joint of the first gas pipeline 10 and the second gas pipeline 20, it can be detected in time, and the gas detector 50 can be remotely connected with the mobile phone light of the staff to remind the staff to carry out maintenance in time.

[0042] In some embodiments, a specific implementation of the first magnetic ring 40 and the second magnetic ring 41 can be as follows: Figure 2 See the structure shown. Figure 2The first magnetic ring 40 and the second magnetic ring 41 each include two concentric arc-shaped magnetic strips 42 and two elastic ropes 43, wherein one elastic rope 43 is fixed between one end of the two magnetic strips 42, and the other elastic rope 43 is fixed between the other ends of the two magnetic strips 42, and the elastic rope 43 protrudes from the inner circumference of the magnetic strips 42 or is flush with the inner circumference of the magnetic strips 42. Under normal circumstances, that is, when the elastic ropes 43 are neither stretched nor compressed, the diameter of the circle enclosed by the two magnetic strips 42 and the two elastic ropes 43 is smaller than the outer diameter of the first gas pipeline 10 and the second gas pipeline 20. During installation, the two elastic ropes 43 between the two magnetic strips 42 can be stretched by pulling up the two magnetic strips 42. After being sleeved on the first gas pipeline 10 or the second gas pipeline 20, the two magnetic strips 42 are magnetically attracted to the outer circumference of the gas pipeline, and the elastic ropes 43 are also squeezed on the outer circumference of the gas pipeline due to being stretched. The structures of the first magnetic ring 40 and the second magnetic ring 41 in this embodiment can be adapted to gas pipelines of different diameters.

[0043] In some embodiments, a specific connection implementation of the elastic cord 43 and the magnetic strip 42 can be as follows: Figure 2 See the structure shown. Figure 2 The inner circumference of the end of each arc-shaped magnetic strip 42 is provided with a slot and a block 44 that cooperates with the slot. The end of the elastic cord 43 is placed in the slot, and the block 44 is used to press and fix the elastic cord 43 in the slot. After a period of use, the elastic force of the elastic cord 43 may decrease due to fatigue. The block 44 can be removed to replace a new elastic cord 43. The structure is simple and easy to operate. The updated elastic cord 43 can ensure a sealed state.

[0044] In some embodiments, an improved implementation of the first gas pipeline 10 and the second gas pipeline 20 can be as follows: Figure 1 See the structure shown. Figure 1 The first gas pipeline 10 is provided with a first limiting groove matched with the first magnetic ring 40, and the second gas pipeline 20 is provided with a second limiting groove matched with the second magnetic ring 41. By providing the first limiting groove and the second limiting groove, it is convenient to position and install the first magnetic ring 40 and the second magnetic ring 41, simplifying the installation difficulty and shortening the installation time.

[0045] It should be noted that when the first limiting groove and the second limiting groove are provided, in a natural state, the radius of the circle formed by the two magnetic strips 42 and the two elastic ropes 43 is smaller than the distance between the axis of the gas pipeline and the bottom surface of the first limiting groove or the second limiting groove.

[0046] In some embodiments, an improved implementation of the first magnetic ring 40 and the second magnetic ring 41 can be as follows: Figure 2 See the structure shown. Figure 2The first magnetic ring 40 and the second magnetic ring 41 further include a fixing block 45. The fixing block 45 on the first magnetic ring 40 is engaged with the first limiting groove, and the fixing block 45 on the second magnetic ring 41 is engaged with the first limiting groove. The fixing block 45 abuts between the two magnetic strips 42 and presses the outer periphery of the elastic rope 43. Since the elastic rope 43 has a certain elastic force, if its elastic force weakens, the tightening effect on the rubber sleeve 30 will also weaken, which may cause the leaked gas to pass through the gap between the rubber sleeve 30 and the gas pipeline. By arranging the fixing block 45 to cooperate with the first limiting groove or the second limiting groove, the safety can be further improved.

[0047] In some embodiments, an improved embodiment of the rubber sleeve 30 can be as follows: Figure 1 See the structure shown. Figure 1 A one-way valve is provided on the inflation port 32, and the one-way valve is used to allow air to flow in one direction into the air cavity 31. The one-way valve can prevent air leakage at the inflation port 32 from affecting the sealing effect of the rubber sleeve 30 during use; the working principle of the one-way valve can refer to the inflation port on the tire of a bicycle.

[0048] In some embodiments, an improved implementation of the above-mentioned natural gas pipeline anti-leakage device can be implemented as follows: Figure 1 See the structure shown. Figure 1 The natural gas pipeline anti-leakage device also includes a pressure sensor 60 and an air pump 61. The pressure sensor 60 is arranged on the inner circumference of the rubber sleeve 30; the air pump 61 is in communication connection with the pressure sensor 60;

[0049] When the reading of the pressure sensor 60 is lower than a preset value, the air pump 61 is turned on to inflate the air cavity 31 until the reading of the pressure sensor 60 is equal to or greater than the preset value.

[0050] When the air cavity 31 is filled with gas, the pressure sensor 60 will be squeezed to have a pressure indication. When the gas in the air cavity 31 leaks out after a period of use, the indication of the pressure sensor 60 will drop below the initial pressure value. At this time, the air pump 61 receives the pressure value signal and can automatically start to inflate the air cavity 31 until the pressure reaches the initial pressure value.

[0051] This embodiment can adjust the amount of gas in the gas cavity 31 in real time to ensure that the rubber sleeve 30 is pressed tightly against the outer periphery of the first gas pipeline 10 and the second gas pipeline 20, thereby ensuring the anti-leakage effect.

[0052] And by observing the working state of the air pump 61, it can also be determined whether the rubber sleeve 30 is damaged; if the air pump 61 is frequently started, it can be determined that the rubber sleeve 30 is damaged.

[0053] In some embodiments, an improved implementation of the above-mentioned natural gas pipeline anti-leakage device can be implemented as follows: Figure 1 See the structure shown. Figure 1 The natural gas pipeline anti-leakage device also includes an indicator light 70, which is connected to the pressure sensor 60. When the pressure sensor 60 indicates a value lower than a preset value, the indicator light 70 changes color. The indicator light 70 can be used to facilitate operators to observe the working status of the anti-leakage device. For example, the indicator light is yellow when the pressure value is normal, and changes to red when the pressure value is too high. When the operator observes that the indicator light 70 is red for a long time, it is necessary to promptly inspect and repair the gas pipeline.

[0054] In some embodiments, an improved implementation of the first gas pipeline 10 and the second gas pipeline 20 can be as follows: Figure 1 and Figure 3 See the structure shown. Figure 1 and Figure 3 The first gas pipeline 10 and the second gas pipeline 20 are both provided with connecting flanges 80 on opposite sides. The two connecting flanges 80 are connected by threaded connectors. One end face of one connecting flange 80 facing the other connecting flange 80 is provided with an annular protrusion 81. The other connecting flange 80 is provided with a matching groove corresponding to the annular protrusion 81. The outer periphery of the protrusion 81 is provided with a sealing ring 82. The sealing ring 82 and the protrusion 81 are both located in the matching groove. By providing the protrusion 81, the matching groove and the sealing ring 82 at the joint of the first gas pipeline 10 and the second gas pipeline 20, the sealing effect is improved and leakage prevention is achieved. In combination with the above-mentioned rubber sleeve 30, the safety of the gas pipeline can be further improved.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A natural gas pipeline anti-leakage device, used for installation at the joint of a first gas pipeline and a second gas pipeline, characterized in that: include: The rubber sleeve is an annular columnar structure, wherein an air cavity is provided inside the rubber sleeve, and an inflation port is provided on the outer periphery of the rubber sleeve; A first magnetic ring is fixedly connected to one axial end of the rubber sleeve; A second magnetic ring is fixedly connected to the other axial end of the rubber sleeve; The first magnetic ring is magnetically fixed to the outer periphery of the first gas pipeline, the second magnetic ring is magnetically fixed to the outer periphery of the second gas pipeline, and the rubber sleeve is arranged on the outer periphery of the joint between the first gas pipeline and the second gas pipeline.

2. The natural gas pipeline anti-leakage device according to claim 1, characterized in that: A gas detector is provided on the inner circumference of the rubber sleeve, and the gas detector corresponds to the joint between the first gas pipeline and the second gas pipeline.

3. The natural gas pipeline anti-leakage device according to claim 1, characterized in that: The first magnetic ring and the second magnetic ring each include two concentric arc-shaped magnetic strips and two elastic ropes, wherein one elastic rope is fixed between one end of the two magnetic strips, and the other elastic rope is fixed between the other ends of the two magnetic strips, and the elastic ropes protrude from the inner circumference of the magnetic strips or are flush with the inner circumference of the magnetic strips.

4. The natural gas pipeline anti-leakage device according to claim 3, characterized in that: The inner circumferential surface of the end of each arc-shaped magnetic strip is provided with a slot and a clamping block cooperating with the slot, the end of the elastic rope is placed in the slot, and the clamping block is used to press and fix the elastic rope in the slot.

5. The natural gas pipeline anti-leakage device according to claim 3, characterized in that: The first gas pipeline is provided with a first limiting groove matched with the first magnetic ring, and the second gas pipeline is provided with a second limiting groove matched with the second magnetic ring.

6. The natural gas pipeline anti-leakage device according to claim 5, characterized in that: The first magnetic ring and the second magnetic ring also include a fixed block, the fixed block on the first magnetic ring is clamped with the first limiting groove, and the fixed block on the second magnetic ring is clamped with the first limiting groove, the fixed block abuts between the two magnetic strips and presses the outer circumference of the elastic rope.

7. The natural gas pipeline anti-leakage device according to claim 1, characterized in that: The inflation port is provided with a one-way valve, and the one-way valve is used to allow the air flow to flow into the air cavity in one direction.

8. The natural gas pipeline anti-leakage device according to claim 1, characterized in that: The natural gas pipeline anti-leakage device also includes: A pressure sensor is arranged on the inner circumference of the rubber sleeve; an air pump, communicatively connected to the pressure sensor; When the reading of the pressure sensor is lower than a preset value, the air pump is turned on to inflate the air cavity until the reading of the pressure sensor is equal to or greater than the preset value.

9. The natural gas pipeline anti-leakage device according to claim 8, characterized in that: The natural gas pipeline anti-leakage device also includes an indicator light, which is communicatively connected with the pressure sensor. When the reading of the pressure sensor is lower than a preset value, the indicator light changes color.

10. The natural gas pipeline anti-leakage device according to claim 1, characterized in that: The first gas pipeline and the second gas pipeline are provided with connecting flanges on opposite sides, and the two connecting flanges are connected by threaded connectors, wherein one end surface of one connecting flange facing the other connecting flange is provided with an annular protrusion, and the other connecting flange is provided with a matching groove corresponding to the annular protrusion, and a sealing ring is provided on the outer periphery of the protrusion, and the sealing ring and the protrusion are both located in the matching groove.

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