Safety isolation device for gas pipeline

Abstract

The invention provides a gas pipeline safety isolation device, which belongs to the technical field of gas pipeline safety protection, and comprises a first arc-shaped clamping sleeve, a second arc-shaped clamping sleeve, a connecting flange, a connecting block, an elastic pressing block, an air bag ring, a gas flow monitor and a micro air pump, the bottom of the first arc-shaped clamping sleeve is hinged to the bottom of the second arc-shaped clamping sleeve, the connecting flange is connected with the first arc-shaped clamping sleeve, the multiple connecting blocks are fixedly connected to the inner wall of the first arc-shaped clamping sleeve and the inner wall of the second arc-shaped clamping sleeve respectively, elastic pressing blocks are arranged on the multiple connecting blocks, and the two ends of the inner wall of the second arc-shaped clamping sleeve are sleeved with the outer ring walls of the two air bag rings. The gas flow monitor is connected to the middle of the first arc-shaped clamping sleeve in a penetrating mode, and the micro air pump is arranged at the top of the gas flow monitor. When air leakage is detected, the sealing device can be quickly started, so that real-time monitoring and automatic plugging of air leakage at the joint are realized, and the safety and reliability of the gas pipeline are remarkably improved.

Description

Technical Field

[0001] The present invention relates to the technical field of gas pipeline safety protection, and in particular to a gas pipeline safety isolation device. Background Art

[0002] With the development of modern industry, gas pipelines, as the main mode of transportation of natural gas, coal gas and other industrial gases, play a key role in energy transportation and industrial production. However, during the use of gas pipelines, gas leakage may occur due to poor sealing of joints, changes in external pressure, material aging, etc., which not only causes energy waste, but also may cause serious safety hazards such as fire, explosion or environmental pollution. Therefore, the research on leakage detection and sealing technology at the joints of gas pipelines has important practical significance.

[0003] At present, the technical means for gas pipeline leakage detection and plugging mainly include manual detection, online monitoring and improvement of sealing structure. However, the existing leakage detection means usually rely on gas sensors or manual inspections, and have problems such as low detection accuracy, slow response speed and high missed detection rate. Although the sealing technology can improve the sealing effect to a certain extent by adopting high-strength sealing materials and structural optimization, its sealing structure is still difficult to adapt to various emergencies due to the complex operating environment of the gas pipeline. In addition, in terms of the linkage control between leakage detection and sealing, the existing technology has not yet formed an effective solution, and usually requires manual intervention to complete the plugging after the leakage, which is complicated to operate and inefficient. Therefore, there is an urgent need for a gas pipeline safety isolation device that can realize real-time leakage detection and rapid sealing response to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a gas pipeline safety isolation device, which can quickly start the sealing device when a gas leak is detected, thereby achieving real-time monitoring and automatic sealing of gas leaks at the connection, significantly improving the safety and reliability of the gas pipeline.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A gas pipeline safety isolation device is characterized by comprising a first arc-shaped ferrule, a second arc-shaped ferrule, a connecting flange, a connecting block, an elastic pressing block, an air bag ring, a gas flow monitor and a micro air pump.

[0007] The bottoms of the first arc ferrule and the second arc ferrule are hinged, the connecting flange is connected to the first arc ferrule, a plurality of connecting blocks are respectively fixedly connected to the inner walls of the first arc ferrule and the second arc ferrule, and elastic pressure blocks are provided on the plurality of connecting blocks. The outer ring walls of the two air bag rings are sleeved on both ends of the inner wall of the second arc ferrule, the gas flow monitor is inserted and connected to the middle part of the first arc ferrule, and the micro air pump is arranged on the top of the gas flow monitor.

[0008] Furthermore, the first arc-shaped ferrule includes a connecting ferrule, two docking plates and a first filling ring groove, the connecting ferrule is arranged on the inner wall in the middle of the first arc-shaped ferrule, the connecting ferrule is sleeved on the outer wall of the connecting flange, the two docking plates are respectively fixed at the two ends of the top of the first arc-shaped ferrule, a docking hole is opened in the middle of the two docking plates, and the first filling ring grooves are respectively arranged at the two ends of the inner wall of the first arc-shaped ferrule.

[0009] Furthermore, the second arc-shaped ferrule includes a second filling ring groove, two docking blocks, two docking rods, two limiting blocks, two limiting slide blocks and two supporting springs.

[0010] The two ends of the inner wall of the second arc-shaped ferrule are respectively provided with a second filling ring groove, the two docking blocks are respectively fixed at the two ends of the top of the second arc-shaped ferrule, the two docking rods are respectively fixed at the middle parts of the two docking blocks, the two docking rods are interlaced and connected with the docking holes on the two docking plates, the ends of the two docking rods are respectively provided with a receiving slide groove, one end of the two limiting blocks are respectively interlaced and connected in the two receiving slide grooves, the inner walls of the top and bottom ends of the two receiving slide grooves are respectively provided with blocking slide grooves, the top and bottom ends of the two limiting blocks are fixedly connected with limiting sliders, the two limiting sliders are slidably interlaced and connected in the blocking slide groove, and the two top support springs are respectively arranged in the two receiving slide grooves.

[0011] Furthermore, the outer annular walls of the two airbag rings are sleeved in the two filling annular grooves of the second arc-shaped ferrule.

[0012] Furthermore, the gas flow monitor includes a gas flow sensor, a control unit, a drive unit and an alarm unit.

[0013] The gas flow sensor, control unit, drive unit and alarm unit are all arranged inside the gas flow monitor. The gas flow sensor is used to detect the air flow within the airbag ring enclosure range. The input end of the control unit is electrically connected to the output end of the gas flow sensor, the output end of the control unit is electrically connected to the control end of the drive unit, the output end of the drive unit is electrically connected to the control end of the micro air pump, and the output end of the control unit is electrically connected to the alarm unit, which is used for air leakage alarm.

[0014] Furthermore, the output end of the micro air pump is used for inflation output of the airbag ring.

[0015] Furthermore, the elastic pressing block is made of rubber or foam material.

[0016] Furthermore, the outer wall material of the airbag ring is made of elastic rubber, and an elastic band is provided on the inner wall of the airbag ring near the inner ring.

[0017] Advantages of the present invention:

[0018] The present invention firstly sets a gas flow monitor and a micro air pump, and sets the gas flow monitor and the micro air pump at the connection of the gas delivery pipeline through the cooperation of the first arc-shaped ferrule and the second arc-shaped ferrule, so as to detect air leakage at the connection; at the same time, an air bag ring in the form of an inflatable plugging is set between the first arc-shaped ferrule and the second arc-shaped ferrule, and the inflation start of the air bag ring is also controlled by the gas flow monitor and the micro air pump; under such a structural setting, through the cooperation of air leakage detection and inflation sealing, the detection and plugging of the connection of the gas delivery pipeline can be more effectively realized, so as to ensure the smooth flow of the gas pipeline and prevent air leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure connection between the present invention and the gas delivery pipeline in an open state;

[0020] Figure 2 It is a schematic diagram of the structure connection between the present invention and the gas delivery pipeline in a closed state;

[0021] Figure 3 It is a front view of the structure of the present invention connected to the gas delivery pipeline in a closed state;

[0022] Figure 4 It is a side view of the structure connection of the present invention and the gas delivery pipeline in a closed state;

[0023] Figure 5 A side view of the structure of the present invention connected to a gas delivery pipeline in an open state;

[0024] Figure 6 It is a structural cross-sectional view of the connection between the docking rod and the second arc-shaped ferrule of the present invention;

[0025] Figure 7 The gas flow monitoring and micro air pump working principle diagram of the present invention;

[0026] In the figure: 1, first arc-shaped ferrule; 101, connecting ferrule; 102, docking plate;

[0027] 2. Second arc-shaped ferrule; 201. Second filling ring groove; 202. Docking block; 203. Docking rod; 204. Limiting block; 205. Limiting slider; 206. Support spring;

[0028] 3. Connecting flange;

[0029] 4. Connecting blocks;

[0030] 5. Elastic briquetting;

[0031] 6. Airbag ring;

[0032] 7. Gas flow monitor; 701. Gas flow sensor; 702. Control unit; 703. Drive unit; 704. Alarm unit;

[0033] 8. Micro air pump. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the invention claimed for protection, but merely represents selected embodiments of the present invention.

[0035] like Figure 1-Figure 5 As shown, a gas pipeline safety isolation device includes a first arc-shaped ferrule 1, a second arc-shaped ferrule 2, a connecting flange 3, a connecting block 4, an elastic pressing block 5, an air bag ring 6, a gas flow monitor 7 and a micro air pump 8.

[0036] The bottom of the first arc ferrule 1 and the second arc ferrule 2 are hinged, the connecting flange 3 is connected to the first arc ferrule 1, and a plurality of connecting blocks 4 are respectively fixedly connected to the inner walls of the first arc ferrule 1 and the second arc ferrule 2, and elastic pressure blocks 5 are provided on the plurality of connecting blocks 4. The outer ring walls of the two air bag rings 6 are sleeved on the two ends of the inner wall of the second arc ferrule 2, the gas flow monitor 7 is inserted and connected to the middle part of the first arc ferrule 1, and the micro air pump 8 is arranged on the top of the gas flow monitor 7.

[0037] The bottoms of the first arc-shaped ferrule 1 and the second arc-shaped ferrule 2 are hinged by a hinge structure, so as to ensure that the tops of the first arc-shaped ferrule 1 and the second arc-shaped ferrule 2 are closed after rotation, thereby forming a tubular structure.

[0038] The gas flow monitor 7 and the micro air pump 8 are used for leak detection at the connection of the gas delivery pipeline. The gas flow monitor 7 and the micro air pump 8 are used for starting control of the airbag ring 6. The airbag ring 6 starts to inflate through the gas flow monitor 7 and the micro air pump 8.

[0039] As a preferred embodiment of the present invention, the first arc-shaped ferrule 1 includes a connecting ferrule 101, two docking plates 102 and a first filling ring groove, the connecting ferrule 101 is arranged on the inner wall in the middle of the first arc-shaped ferrule 1, the connecting ferrule 101 is sleeved on the outer wall of the connecting flange 3, the two docking plates 102 are respectively fixed at the two ends of the top of the first arc-shaped ferrule 1, a docking hole is opened in the middle of the two docking plates 102, and the first filling ring grooves are respectively arranged at the two ends of the inner wall of the first arc-shaped ferrule 1.

[0040] As a preferred embodiment of the present invention, the second arc-shaped ferrule 2 includes a second filling ring groove 201, two docking blocks 202, two docking rods 203, two limiting blocks 204, two limiting sliders 205 and two supporting springs 206.

[0041] The inner wall ends of the second arc-shaped ferrule 2 are respectively provided with second filling ring grooves 201, the two docking blocks 202 are respectively fixed at the top ends of the second arc-shaped ferrule 2, the two docking rods 203 are respectively fixed at the middle of the two docking blocks 202, the two docking rods 203 are connected with the docking holes on the two docking plates 102, and the ends of the two docking rods 203 are provided with receiving slide grooves. Figure 6 As shown, one end of the two limiting blocks 204 is respectively inserted and connected in the two receiving chutes, and the inner walls of the top and bottom ends of the two receiving chutes are provided with blocking chutes, and the top and bottom ends of the two limiting blocks 204 are fixedly connected with limiting sliders 205, and the two limiting sliders 205 are slidably inserted and connected in the blocking chutes, and the two supporting springs 206 are respectively arranged in the two receiving chutes. Through the cooperation between the limiting sliders 205 and the blocking chutes, the limiting blocks 204 can stably insert and slide in the receiving chutes.

[0042] After the first arc-shaped clamping sleeve 1 and the second arc-shaped clamping sleeve 2 are closed, the docking rod 203 follows the rotation and closure of the two and approaches the docking plate 102. At this time, the docking rod 203 is inserted into the docking hole of the docking plate 102. Under the extrusion of the inner wall of the docking hole, the limiting block 204 is squeezed and moves into the receiving slot. After continuously squeezing the support spring 206, it shrinks into the receiving slot, so that the docking rod 203 can completely pass through the docking hole.

[0043] When the portion of the docking rod 203 provided with the limiting block 204 passes through the docking hole, the restoring force of the supporting spring 206 pushes the limiting block 204 away from the receiving slot, and at this time, the limiting block 204 is close to the docking plate 102, thereby limiting, so as to ensure the stability of the closure of the first arc ferrule 1 and the second arc ferrule 2. When it is necessary to release the closed connection between the first arc ferrule 1 and the second arc ferrule 2, the limiting block 204 is pressed to push out the docking rod 203.

[0044] As a preferred embodiment of the present invention, Figure 1-Figure 5 As shown, the outer annular walls of the two airbag rings 6 are sleeved in the two filling annular grooves 201 of the second arc-shaped ferrule 2 .

[0045] As a preferred embodiment of the present invention, Figure 7 As shown, the gas flow monitor 7 includes a gas flow sensor 701 , a control unit 702 , a driving unit 703 and an alarm unit 704 .

[0046] The gas flow sensor 701, control unit 702, drive unit 703 and alarm unit 704 are all arranged inside the gas flow monitor 7. The gas flow sensor 701 is used to detect the air flow within the enclosure range of the airbag ring 6. The input end of the control unit 702 is electrically connected to the output end of the gas flow sensor 701, the output end of the control unit 702 is electrically connected to the control end of the drive unit 703, the output end of the drive unit 703 is electrically connected to the control end of the micro air pump 8, and the output end of the control unit 702 is electrically connected to the alarm unit 704, and the alarm unit 704 is used for air leakage alarm.

[0047] As a preferred embodiment of the present invention, the output end of the micro air pump 8 is used for inflation output of the airbag ring 6 .

[0048] The micro air pump 8 is started and controlled by the gas flow monitor 7. When a gas leak is detected, the micro air pump 8 is started to inflate the airbag ring 6, thereby ensuring that the airbag ring 6 expands and further sealing the leak.

[0049] The gas flow sensor 701 is used to detect the air flow within the enclosure of the airbag ring 6. By monitoring the flow of gas, it can be determined whether there is a gas leakage within the enveloping range of the airbag ring 6. The control unit 702 receives the output signal from the gas flow sensor 701 and processes it according to the set threshold. If a flow abnormality is detected, the control unit 702 will generate a corresponding output signal. After the output signal is sent to the drive unit 703, the drive unit 703 can start the micro air pump 8 to replenish the gas in the airbag ring 6, thereby maintaining the expansion state of the airbag ring 6. The alarm unit 704 is connected to the control unit 702 and is used to issue a gas leakage alarm. When the control unit 702 detects an abnormal air flow, the alarm unit 704 will be activated to promptly remind the operator to perform inspection and maintenance.

[0050] As a preferred embodiment of the present invention, the elastic pressure block 5 is made of rubber or foam material, so that the elastic pressure block 5 is pressed against the wall of the gas delivery pipe, so that the first arc-shaped ferrule 1 and the second arc-shaped ferrule 2 form contact extrusion after the outer wall of the gas delivery pipe is covered, thereby further assisting the stability of the first arc-shaped ferrule 1 and the second arc-shaped ferrule 2 when they are sleeved on the outer wall of the gas delivery pipe, and ensuring the stable operation of the structure set at the first arc-shaped ferrule 1 and the second arc-shaped ferrule 2.

[0051] As a preferred embodiment of the present invention, the outer wall material of the airbag ring 6 is made of elastic rubber, and the inner wall of the airbag ring 6 near the inner ring is provided with an elastic band. When connecting the entire device, the airbag ring 6 is first sleeved on the outer wall of the gas delivery pipe. In this way, through the setting of the elastic band, the inner wall of the airbag ring 6 can be elastically bound on the outer wall of the gas delivery pipe, and the outer ring wall of the airbag ring 6 is adhered and fixed to the first filling ring groove at the inner wall of the first arc-shaped sleeve 1. Under such a structural setting, the airbag ring 6 expands after being inflated, and the outer wall of the airbag ring 6 is filled in the first filling ring groove of the first arc-shaped sleeve 1 and the second filling ring groove 201 on the inner wall of the second arc-shaped sleeve 2. Utilizing such a structural setting, the airbag ring 6 is expanded and closed, thereby ensuring that a closed space is formed at the connecting flange 3 of the gas delivery pipe to ensure safe closed isolation.

[0052] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art can still adjust the technical solutions described in the above embodiments or replace some of the technical features by equivalents. Therefore, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention is also intended to include these modifications and variations.

Claims

1. A gas pipeline safety isolation device, characterized in that: It comprises a first arc-shaped ferrule (1), a second arc-shaped ferrule (2), a connecting flange (3), a connecting block (4), an elastic pressing block (5), an air bag ring (6), a gas flow monitor (7) and a micro air pump (8); The bottoms of the first arc-shaped ferrule (1) and the second arc-shaped ferrule (2) are hinged, the connecting flange (3) is connected to the first arc-shaped ferrule (1), a plurality of connecting blocks (4) are respectively fixedly connected to the inner walls of the first arc-shaped ferrule (1) and the second arc-shaped ferrule (2), and elastic pressure blocks (5) are provided on the plurality of connecting blocks (4). The outer ring walls of the two airbag rings (6) are sleeved on the two ends of the inner wall of the second arc-shaped ferrule (2), the gas flow monitor (7) is inserted and connected to the middle part of the first arc-shaped ferrule (1), and the micro air pump (8) is arranged on the top of the gas flow monitor (7).

2. A gas pipeline safety isolation device according to claim 1, characterized in that: The first arc-shaped ferrule (1) comprises a connecting ferrule (101), two docking plates (102) and a first filling ring groove. The connecting ferrule (101) is arranged on the inner wall in the middle of the first arc-shaped ferrule (1). The connecting ferrule (101) is sleeved on the outer wall of the connecting flange (3). The two docking plates (102) are respectively fixed at the top two ends of the first arc-shaped ferrule (1). A docking hole is opened in the middle of the two docking plates (102). The first filling ring grooves are respectively arranged at the two ends of the inner wall of the first arc-shaped ferrule (1).

3. A gas pipeline safety isolation device according to claim 2, characterized in that: The second arc-shaped ferrule (2) comprises a second filling ring groove (201), two docking blocks (202), two docking plug rods (203), two limiting blocks (204), two limiting slide blocks (205) and two supporting springs (206); The two ends of the inner wall of the second arc-shaped sleeve (2) are respectively provided with second filling ring grooves (201), the two docking blocks (202) are respectively fixed at the two ends of the top of the second arc-shaped sleeve (2), the two docking rods (203) are respectively fixed at the middle parts of the two docking blocks (202), the two docking rods (203) are connected through the docking holes on the two docking plates (102), the ends of the two docking rods (203) are respectively provided with receiving slide grooves, one end of the two limiting blocks (204) is respectively connected through the two receiving slide grooves, the inner walls of the top and bottom ends of the two receiving slide grooves are respectively provided with blocking slide grooves, the top and bottom ends of the two limiting blocks (204) are fixedly connected with limiting sliders (205), the two limiting sliders (205) are slidably inserted and connected in the blocking slide grooves, and the two supporting springs (206) are respectively arranged in the two receiving slide grooves.

4. A gas pipeline safety isolation device according to claim 3, characterized in that: The outer annular walls of the two airbag rings (6) are sleeved in the two filling annular grooves (201) of the second arc-shaped ferrule (2).

5. A gas pipeline safety isolation device according to claim 4, characterized in that: The gas flow monitor (7) comprises a gas flow sensor (701), a control unit (702), a drive unit (703) and an alarm unit (704); The gas flow sensor (701), the control unit (702), the drive unit (703) and the alarm unit (704) are all arranged inside the gas flow monitor (7); the gas flow sensor (701) is used to detect the air flow within the enclosure of the airbag ring (6); the input end of the control unit (702) is electrically connected to the output end of the gas flow sensor (701); the output end of the control unit (702) is electrically connected to the control end of the drive unit (703); the output end of the drive unit (703) is electrically connected to the control end of the micro air pump (8); the output end of the control unit (702) is electrically connected to the alarm unit (704); and the alarm unit (704) is used for air leakage alarm.

6. A gas pipeline safety isolation device according to claim 5, characterized in that: The output end of the micro air pump (8) is used for inflation output of the air bag ring (6).

7. A gas pipeline safety isolation device according to claim 6, characterized in that: The elastic pressing block (5) is made of rubber or foam material.

8. A gas pipeline safety isolation device according to claim 7, characterized in that: The outer wall material of the airbag ring (6) is made of elastic rubber, and the inner wall of the airbag ring (6) close to the inner ring is provided with an elastic belt.

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