Self-protection gas pipeline system with detection function

Abstract

The application discloses a self-protecting gas pipeline system with a detection function, which comprises a gas multi-pass branch system and a detection system; the gas multi-pass branch system comprises a gas main pipe; a plurality of branch systems are arranged in communication with the gas main pipe at a gas outlet end of the gas main pipe, and a valve is arranged at a gas inlet end of each of the branch systems; the detection system comprises a leakage detection and alarm system and a sealing detection system; a detection end of the sealing detection system is connected to at least one of the branch systems; and a plurality of the leakage detection and alarm systems are arranged in correspondence with the plurality of branch systems respectively. The self-protecting gas pipeline system with the detection function can detect the leakage of the gas pipeline and automatically cut off the gas to play a protection role.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of self-protection gas pipeline system with detection function. BACKGROUND

[0002] Gas plays an important role in daily life; if gas leakage occurs during use, it will seriously endanger the health of residents; therefore, the gas pipeline needs to be detected to ensure that the gas pipeline has good sealing performance; to avoid serious harm caused by gas leakage; at the same time, the insulation of the gas pipeline also needs to be ensured; the stainless steel corrugated pipe is heat fused by a heat fusion device, so that the protective sleeve on the stainless steel corrugated pipe is heat shrunk to cover the stainless steel corrugated pipe, which plays a role in preventing corrosion and avoids corrosion and damage of the stainless steel corrugated pipe. SUMMARY

[0003] The present application provides a self-protection gas pipeline system with detection function, which can detect the leakage of the gas pipeline and automatically cut off the gas to play a protective role.

[0004] TECHNICAL SOLUTION: In order to achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0005] A self-protection gas pipeline system with detection function, comprising a gas multi-pass branch system and a detection system; the gas multi-pass branch system comprises a gas main pipe; a plurality of branch systems are arranged at the gas outlet end of the gas main pipe and are in communication with each other, and each of the branch systems is provided with a valve at the gas inlet end; the detection system comprises a leakage detection and alarm system and a sealing performance detection system; the detection end of the sealing performance detection system is connected to at least one of the branch systems; and a plurality of leakage detection and alarm systems are arranged corresponding to a plurality of branch systems.

[0006] Further, the branch system comprises a stainless steel corrugated pipe and a leak-proof joint; the gas main pipe is connected to the stainless steel corrugated pipe through the leak-proof joint; one end of the stainless steel corrugated pipe is embedded in the leak-proof joint, and an insulation and anti-conduction structure arranged in the leak-proof joint separates the outer metal layer of the leak-proof joint from the stainless steel corrugated pipe; one end of the insulation and anti-conduction structure is wrapped around the embedded end of the stainless steel corrugated pipe, and the other end of the insulation and anti-conduction structure protrudes and is located between the leak-proof joint and the stainless steel corrugated pipe.

[0007] Further, the insulation anti-conduction structure comprises a polytetrafluoroethylene corrosion-resistant insulation sleeve and an insulation flat pad; the polytetrafluoroethylene corrosion-resistant insulation sleeve is sleeved on the embedded end of the stainless steel bellows, and the polytetrafluoroethylene corrosion-resistant insulation sleeve is correspondingly isolated between the stainless steel bellows and the leak-proof joint; one end of the polytetrafluoroethylene corrosion-resistant insulation sleeve protrudes from the overlapping area of the stainless steel bellows and the leak-proof joint; the other end of the polytetrafluoroethylene corrosion-resistant insulation sleeve is correspondingly provided with an insulation flat pad; the polytetrafluoroethylene corrosion-resistant insulation sleeve and the insulation flat pad form a ring-enclosed insulation sleeve body; the ring-enclosed insulation sleeve body is correspondingly sleeved on the stainless steel bellows;

[0008] The protruding end of the polytetrafluoroethylene corrosion-resistant insulation sleeve is provided with a clamping groove on the side wall in a ring shape; the leak-proof joint is provided with a clamping ring on the inner wall edge of one end in a ring shape; the leak-proof joint is clamped in the clamping groove through the clamping ring; a plastic sleeve is arranged on the middle part of the stainless steel bellows in a ring shape; a heat shrinkable sleeve is arranged between the plastic sleeve and one end of the clamping groove.

[0009] Further, the polytetrafluoroethylene corrosion-resistant insulation sleeve is provided with an embedded groove on the inner wall of one end of the corresponding insulation flat pad in a ring shape; a double-insurance leak-proof card is embedded in the embedded groove; the double-insurance leak-proof card has a split ring structure, and the inner teeth on the inner wall of the two ends of the double-insurance leak-proof card are engaged with the outer teeth of the stainless steel bellows;

[0010] There is a gap between the double-insurance leak-proof card in the embedded groove and the insulation flat pad; a clamping ring tooth is fixed on the side wall of the insulation flat pad in a ring shape corresponding to the gap; the clamping ring tooth is clamped in the gap.

[0011] Further, the leak-proof joint is provided with a containing groove on the inner side away from the stainless steel bellows; the diameter of the insulation flat pad is greater than the diameter of the polytetrafluoroethylene corrosion-resistant insulation sleeve, and the edge of the insulation flat pad is in contact with the inner wall of the containing groove; a sealing gasket is arranged on the side of the insulation flat pad away from the stainless steel bellows; the containing groove is threadedly connected with a sealing fastener at the opening end, and the sealing fastener is correspondingly abutted against the sealing gasket; the sealing fastener is threadedly connected with the gas main pipe; a small hole is formed on the side of the sealing gasket in contact with the sealing fastener.

[0012] Further, the sealing detection system comprises a detection pipeline section; the detection pipeline section is a gas main pipe and a connected stainless steel bellows; one end of the detection pipeline section is closed by an interface valve; a pressure measurement branch is arranged in the detection pipeline section; the pressure measurement branch is at the front end of the branch system; a pressure measurement device is arranged on the end of the pressure measurement branch away from the detection pipeline section, and a control valve is arranged on the pressure measurement branch; a pressure increasing device is arranged on the other end of the detection pipeline section; after the pressure increasing device is inflated to maintain pressure in the detection pipeline section, the control valve is opened, and then the pressure measurement device measures the pressure.

[0013] The pressure measuring branch is arranged on the leak-proof joint of the gas main pipe and the stainless steel corrugated pipe, and a metering head can be arranged on the leak-proof joint; one end of the stainless steel corrugated pipe away from the gas main pipe is connected to the electrical device through the leak-proof joint, and an interface valve is arranged on the leak-proof joint.

[0014] Further, the anti-corrosion hot melting device is further included; the anti-corrosion hot melting device includes a hot melting baking structure; the heat shrink sleeve is correspondingly sleeved at the connection position of the stainless steel corrugated pipe and the leak-proof joint; the hot melting baking structure includes a mounting seat and an inclusion structure; the inclusion structure is arranged on one side of the mounting seat corresponding to the heat shrink sleeve; the inclusion structure is arranged in a ring shape around the heat shrink sleeve, and the inclusion structure is arranged in the heat shrink sleeve; the heat shrink sleeve is heat-shrunk and coated on the stainless steel corrugated pipe and the leak-proof joint.

[0015] Further, the stainless steel corrugated pipe is sleeved with a plastic sleeve on the side wall of the middle part; one end of the heat shrink sleeve is correspondingly half-coated on the plastic sleeve, the other end of the heat shrink sleeve is coated on one end of the leak-proof joint, and the heat shrink sleeve is wrapped on the side wall of the stainless steel corrugated pipe.

[0016] A sliding groove is formed in the side wall of the mounting seat; the inclusion structure includes a sliding block and a hot melting baking chamber; the sliding block is drivingly connected with the sliding device in the sliding groove; the hot melting baking chamber is arranged on one end of the sliding block away from the mounting seat, and the hot melting baking chamber is arranged around the heat shrink sleeve.

[0017] Further, the hot melting baking chamber is open at both ends, and the hot melting baking chamber is made of symmetrical half-circular clamping bodies; the half-circular clamping bodies are connected with the sliding block through connecting rods, and the swinging device on the sliding block is drivingly connected with the connecting rods; a plurality of baking lamps are arranged on the inner walls of the half-circular clamping bodies; arc-shaped elastic sheets are arranged on the inner walls of the two ends of the half-circular clamping bodies; one end of the arc-shaped elastic sheet away from the inner wall of the half-circular clamping body is bent towards the middle part of the hot melting baking chamber; a plurality of fault accommodating notches are formed in the arc-shaped elastic sheet in a ring shape; one end of the arc-shaped elastic sheet is correspondingly pressed on the heat shrink sleeve.

[0018] Further, the leak detection alarm system includes a detection cover; the detection cover is detachably clamped on the stainless steel corrugated pipe, and the detection cover is arranged around the leak-proof joint at both ends; an electric detection device is arranged in the detection cover, and the electric detection device is connected to the stainless steel corrugated pipe; a gas detection device is correspondingly arranged in the detection cover; a control valve is arranged on the leak-proof joint of the gas main pipe; the signal output ends of the electric detection device and the gas detection device are in signal communication connection with the signal input end of the control valve.

[0019] The detection cover body comprises arc clamping blocks; a plurality of the arc clamping blocks are symmetrically clamped on a plastic sleeve, and one end of the arc clamping blocks is hingedly arranged, and the other end is fixedly connected through a bolt; a through hole is formed in the sidewall of the plastic sleeve; the detection end of the electric detection device on the inner wall of the arc clamping block passes through the through hole and contacts the sidewall of the stainless steel corrugated pipe;

[0020] The detection cover body further comprises gas collection covers; a plurality of the gas collection covers are symmetrically arranged on both sides of the arc clamping blocks, and the gas collection covers are spliced with the arc clamping blocks to form an elliptical shape; the gas collection covers are circumferentially arranged on the stainless steel corrugated pipe and the leak-proof joint; the gas collection covers are gas collection areas; arc-shaped strips are arranged on the inner walls of the gas collection covers, and the arc-shaped strips are arranged along the length direction of the stainless steel corrugated pipe; one end of the arc-shaped strip is fixed on the sidewall of the arc clamping block; the gas detection device is arranged in the middle of the arc-shaped strip;

[0021] The sidewall of the arc clamping block is provided with a conductive alarm device and a gas alarm device; the signal output end of the electric detection device is in communication connection with the input end of the conductive alarm device; the signal output end of the gas detection device is in communication connection with the input end of the gas alarm device; the gas collection cover is detachably arranged on the arc-shaped strip.

[0022] Beneficial effects: the present application has good leak-proof and insulation effects, and can detect the leakage condition through the detection system to ensure safety; the beneficial effects include but are not limited to the following:

[0023] 1) Before the gas pipeline is ventilated, the sealing of the multiple passages of the gas pipeline is detected through the sealing detection system; one branch can be detected alone, or multiple branches can be detected simultaneously, and the branches can be freely matched; when the gas is transported, the leakage of the gas pipeline can be detected through the leak detection alarm system on the branch system, and if leakage occurs, an alarm is sent, and the valve is closed to ensure safety;

[0024] 2) The annular insulation sleeve body formed by the polytetrafluoroethylene corrosion-resistant insulation sleeve and the insulation flat gasket plays an insulation role, and the sealing fastener is used to tightly press the sealing element and the annular insulation sleeve body to improve the stability, which plays a sealing role and an insulation effect; a small hole is formed in the side of the sealing gasket 33 in contact with the sealing fastener 34, which is beneficial to the suction of the sealing fastener to the sealing gasket. BRIEF DESCRIPTION OF DRAWINGS

[0025] ATTACHMENT Figure 1 It is a structure diagram of a self-protection gas pipeline system;

[0026] ATTACHMENT Figure 2 It is a structure diagram of a branch system;

[0027] ATTACHMENT Figure 3 It is a sectional view of the branch system;

[0028] ATTACHMENTFigure 4 Structure diagram of leakage-proof joint;

[0029] Figure Figure 5 Structure diagram of insulation and anti-conduction;

[0030] Figure Figure 6 Structure diagram of double insurance leakage-proof card;

[0031] Figure Figure 7 Structure diagram of sealing detection system;

[0032] Figure Figure 8 Structure diagram of anti-corrosion hot melting device;

[0033] Figure Figure 9 Structure diagram of hot melting baking chamber;

[0034] Figure Figure 10 Structure diagram of arc-shaped elastic sheet;

[0035] Figure Figure 11 Structure diagram of detection alarm system;

[0036] Figure Figure 12 Structure diagram of gas collecting cover;

[0037] Figure Figure 13 Structure diagram of arc-shaped clamping block. DETAILED DESCRIPTION

[0038] The application will be further described below with reference to the drawings.

[0039] As shown in the drawings Figures 1-13 : A self-protection gas pipeline system with detection function, comprising a gas multi-pass branch system 10 and a detection system 101; the gas multi-pass branch system 10 comprises a gas main pipe 2; a plurality of branch systems 102 are arranged at the gas outlet end of the gas main pipe 2 and are connected in communication, and each of the branch systems 102 is provided with a valve at the gas inlet end; the detection system 101 comprises a leakage detection alarm system 103 and a sealing detection system 104; the detection end of the sealing detection system 104 is connected in communication with at least one of the branch systems 102; and a plurality of the leakage detection alarm systems 103 are arranged corresponding to a plurality of the branch systems 102. During installation, a plurality of tee joints or cross joints can be used to divide the gas pipeline into a plurality of branch systems; before the gas pipeline is ventilated, the sealing detection system is used to detect the sealing of the plurality of passageways of the gas pipeline; one branch system can be detected alone, or a plurality of branch systems can be detected simultaneously, and the detection can be freely combined; and when the gas is delivered, the leakage detection alarm system of the branch system is used to detect the leakage of the gas pipeline, and if leakage occurs, an alarm is sent, and the valve is used to cut off the gas to ensure safety.

[0040] The branch system 102 includes a stainless steel bellows 1 and a leak-proof joint 3; a gas main pipe 2 is communicated with the stainless steel bellows 1 through the leak-proof joint 3; one end of the stainless steel bellows 1 is embedded in the leak-proof joint 3, and an insulation anti-conduction structure 5 arranged in the leak-proof joint 3 separates the outer metal layer of the leak-proof joint 3 from the stainless steel bellows 1; one end of the insulation anti-conduction structure 5 is wrapped around the embedded end of the stainless steel bellows 1, and the other end of the insulation anti-conduction structure 5 protrudes and is between the leak-proof joint 3 and the stainless steel bellows 1. The insulation anti-conduction structure is arranged at the connection position of the stainless steel bellows and the joint to isolate the metal joint from the stainless steel bellows, which can avoid the electric conduction of the plugged-in equipment to the gas pipeline and avoid the risk of electric shock when residents use it.

[0041] The insulation anti-conduction structure 5 includes a polytetrafluoroethylene corrosion-resistant insulation sleeve 51 and an insulation flat pad 52; the polytetrafluoroethylene corrosion-resistant insulation sleeve 51 is wrapped around the embedded end of the stainless steel bellows 1, and the polytetrafluoroethylene corrosion-resistant insulation sleeve 51 corresponds to the isolation between the stainless steel bellows 1 and the leak-proof joint 3; one end of the polytetrafluoroethylene corrosion-resistant insulation sleeve 51 protrudes from the overlapping area of the stainless steel bellows 1 and the leak-proof joint 3; the other end of the polytetrafluoroethylene corrosion-resistant insulation sleeve 51 corresponds to the arrangement of the insulation flat pad 52 in the leak-proof joint 3; the polytetrafluoroethylene corrosion-resistant insulation sleeve 51 and the insulation flat pad 52 form a wrapped insulation sleeve body 53; the wrapped insulation sleeve body 53 corresponds to the wrapping of the stainless steel bellows 1; the embedded end of the stainless steel bellows is wrapped, so as to isolate the stainless steel bellows from the joint, play an insulation role, and avoid the leakage of the gas pipeline and cause harm.

[0042] The protruding end of the polytetrafluoroethylene corrosion-resistant insulation sleeve 51 is provided with a clamping groove 511 on the side wall; the leak-proof joint 3 is provided with a clamping ring 31 on the edge of the inner wall of one end corresponding to the clamping groove 511; the leak-proof joint 3 is clamped in the clamping groove 511 through the clamping ring 31; the clamping ring on the joint is embedded in the clamping groove to limit the polytetrafluoroethylene corrosion-resistant insulation sleeve, which plays a stable role and avoids the movement of the polytetrafluoroethylene corrosion-resistant insulation sleeve and improves the effectiveness of insulation. The stainless steel bellows 1 is provided with a plastic sleeve 84 wrapped around the middle part; the plastic sleeve 84 and the clamping groove 511 are provided with a heat shrinkable sleeve 81 between one end; the stainless steel bellows is protected and plays a corrosion-resistant role.

[0043] The polytetrafluoroethylene corrosion-resistant insulation sleeve 51 is provided with an embedded groove 512 on the inner wall of one end corresponding to the insulation flat pad 52; the embedded groove 512 is embedded with a double-insurance leak-proof card 4; the double-insurance leak-proof card 4 is a split ring structure, and the inner teeth 41 on the inner walls of both ends of the double-insurance leak-proof card 4 are engaged with the outer teeth of the stainless steel bellows 1, which plays a good stable and double-leak-proof role; avoids the leakage of gas and causes harm.

[0044] The double insurance leak-proof card 4 in the embedding groove 512 and the insulating flat pad 52 have a spacing 521; the sidewall of the insulating flat pad 52 is circumferentially fixed with the card-in ring teeth 522 corresponding to the spacing 521; the card-in ring teeth 522 correspond to the card-in spacing 521; the insulating flat pad and the card-in ring teeth and the polytetrafluoroethylene corrosion-resistant insulating sleeve form a zigzag type of mutual card embedding to wrap around the stainless steel corrugated pipe, so as to isolate the stainless steel corrugated pipe and the joint, and achieve good insulation effect.

[0045] The leak-proof joint 3 is provided with a containing groove 11 around the one end away from the stainless steel corrugated pipe 1; the diameter of the insulating flat pad 52 is greater than that of the polytetrafluoroethylene corrosion-resistant insulating sleeve 51, and the edge of the insulating flat pad 52 corresponds to the inner wall of the containing groove 11; the insulating flat pad 52 is provided with a sealing gasket 33 on the side away from the stainless steel corrugated pipe 1; the opening end of the containing groove 11 is threadedly and sealingly connected with the sealing fastener 34, and the sealing fastener 34 corresponds to the sealing gasket 33; the sealing fastener 34 is threadedly connected with the gas main pipe 2; the ring-wrapped insulating sleeve formed by the polytetrafluoroethylene corrosion-resistant insulating sleeve and the insulating flat pad plays an insulating role, and the sealing fastener is used to tightly press the sealing member and the ring-wrapped insulating sleeve to improve the stability, which plays a sealing role and an insulating effect; a small hole is formed on the side of the sealing gasket 33 contacting the sealing fastener 34, which is beneficial to the suction of the sealing fastener to the sealing gasket.

[0046] The sealing detection system 104 comprises a detection pipeline section 9; the detection pipeline section 9 is the gas main pipe 2 and the connected stainless steel corrugated pipe 1; one end of the detection pipeline section 9 is provided with an interface valve 91; part of the detection pipeline section 9 is provided with a pressure measuring branch 92; the pressure measuring branch 92 is located at the front end of the branch system 102; the pressure measuring branch 92 is provided with a pressure measuring device 921 on the end away from the detection pipeline section 9, and the pressure measuring branch 92 is provided with a control valve 922; the other end of the detection pipeline section 9 is provided with a pressure increasing device 93; the pressure increasing device 93 is provided with a pressure maintaining valve 931 at the joint with the gas main pipe 2; after the pressure increasing device 93 is inflated to maintain the pressure in the detection pipeline section 9, the control valve 922 is opened, and then the pressure measuring device 921 measures the pressure; after the pressure maintaining test in the detection pipeline section for at least 15 minutes, the control valve is opened, and the pressure measuring device tests the pressure in the detection pipeline section; if the pressure is above 5000 pa, it meets the requirements, which indicates that the detection pipeline section has good sealing performance. The pressure maintaining valve controls the pressure maintaining value to improve the effectiveness of the detection.

[0047] The pressure measuring branch 92 is arranged on the anti-leakage joint 3 connected with the stainless steel bellows pipe 1 and the joint head is arranged on the anti-leakage joint 3; the anti-leakage joint 3 is connected to the electrical device through the anti-leakage joint 3 at the end away from the gas main pipe 2, and the interface valve 91 is arranged on the anti-leakage joint 3; the gas main pipe 2 and the stainless steel bellows pipe section are detected to ensure good sealing performance in use.

[0048] The anti-corrosion hot melting device 80 is further included; the anti-corrosion hot melting device 80 includes a hot melting baking structure 8; the heat shrink sleeve 81 is correspondingly sleeved at the connection position of the stainless steel bellows pipe 1 and the anti-leakage joint 3; the hot melting baking structure 8 includes a mounting seat 82 and an inclusion structure 83; the inclusion structure 83 is arranged on the side of the heat shrink sleeve 81 corresponding to the mounting seat 82; the inclusion structure 83 is closed and correspondingly arranged around the heat shrink sleeve 81, and the inclusion structure 83 internally radiates heat to bake the heat shrink sleeve 81, which is heat-shrunk and wrapped on the connection position of the stainless steel bellows pipe 1 and the anti-leakage joint 3. The heat shrink sleeve is first sleeved at the connection position of the stainless steel bellows pipe and the joint, and then the inclusion structure is driven by the mounting seat to surround the heat shrink sleeve to bake the heat shrink sleeve, so that the heat shrink sleeve is heat-shrunk and wrapped on the stainless steel bellows pipe, avoiding corrosion of the stainless steel bellows pipe and gas leakage danger.

[0049] The plastic sleeve 84 is sleeved on the side wall of the stainless steel bellows pipe 1; one end of the heat shrink sleeve 81 is correspondingly semi-wrapped on the plastic sleeve 84, the other end of the heat shrink sleeve 81 is wrapped on one end of the anti-leakage joint 3, and the heat shrink sleeve 81 is wrapped on the side wall of the stainless steel bellows pipe 1; the stainless steel bellows pipe can be comprehensively wrapped and protected.

[0050] The sliding groove 821 is arranged on the side wall of the mounting seat 82; the inclusion structure 83 includes a sliding block 831 and a hot melting baking chamber 832; the sliding block 831 is drivingly connected with the sliding device in the sliding groove 821; the hot melting baking chamber 832 is arranged on the end of the sliding block 831 away from the mounting seat 82, and the hot melting baking chamber 832 is correspondingly arranged around the heat shrink sleeve 81; the hot melting baking chamber is conveniently moved to the position of the heat shrink sleeve by the sliding block, and the baking effect is increased.

[0051] The hot melt baking chamber 832 is open at both ends, and the hot melt baking chamber 832 is spliced by symmetrically arranged half-round clamping bodies 833; the half-round clamping bodies 833 are connected with the sliding blocks 831 through connecting rods 834, and the swinging devices on the sliding blocks 831 are drivingly connected with the connecting rods 834; a plurality of baking lamps 835 are arranged on the inner walls of the half-round clamping bodies 833; the half-round clamping bodies are designed in an openable and closable manner, can be conveniently surrounded on the position where the heat shrink sleeve is located, and then the heat shrink sleeve is baked by using the heat radiated by the baking lamps, so that the heat shrink sleeve is heat shrunk and wrapped on the stainless steel corrugated pipe; arc-shaped elastic sheets 836 are arranged on the inner walls of both ends of the half-round clamping bodies 833; the ends of the arc-shaped elastic sheets 836 away from the inner walls of the half-round clamping bodies 833 are bent towards the middle part of the hot melt baking chamber 832; when the half-round clamping bodies are surrounded on the position where the heat shrink sleeve is located, the arc-shaped elastic sheets can press the heat shrink sleeve on both ends, so that the heat shrink sleeve can be accurately wrapped on the corresponding position when the heat shrink sleeve is heat shrunk; a plurality of fault tolerance notches 837 are annularly arranged on the bent ends of the arc-shaped elastic sheets 836; the bent ends of the arc-shaped elastic sheets 836 correspondingly press the heat shrink sleeve 81; the strips between the plurality of fault tolerance notches are similar to pressing fingers, can press the heat shrink sleeve, and avoid that the heat shrink sleeve cannot be wrapped on the stainless steel corrugated pipe when the heat shrink sleeve is heat shrunk.

[0052] The leak detection alarm system 103 comprises a detection cover 7; the detection cover 7 is detachably clamped on the stainless steel corrugated pipe 1, and both ends of the detection cover 7 extend and correspondingly surround the anti-leakage joint 3; an electric detection device 71 is arranged in the detection cover 7, and the electric detection device 71 is connected to the stainless steel corrugated pipe 1; a gas detection device 72 is correspondingly arranged in the detection cover 7; a control valve 73 is arranged on the anti-leakage joint 3 at the gas main pipe 2; the signal output ends of the electric detection device 71 and the gas detection device 72 are in communication connection with the signal input end of the control valve 73; the detection cover is detachably arranged on the gas pipeline, and the use of the gas pipeline is detected by the electric detection device and the gas detection device on the detection cover, so as to avoid the dangerous situation of gas leakage and electric leakage of the gas pipeline.

[0053] The detection cover 7 comprises arc-shaped clamping blocks 75; a plurality of the arc-shaped clamping blocks 75 are symmetrically clamped on the plastic sleeve 84, and one end of each arc-shaped clamping block 75 is hingedly arranged, and the other end is fixedly connected through a bolt; a through hole 741 is formed in the side wall of the plastic sleeve 84; the detection end of the electric detection device 71 on the inner wall of the arc-shaped clamping block 75 passes through the through hole 741 and contacts the side wall of the stainless steel corrugated pipe 1; by electrically detecting the stainless steel corrugated pipe, the situation of electric leakage on the stainless steel corrugated pipe is avoided, and the harm of electric leakage to residents is avoided.

[0054] The detection cover 7 further comprises a gas collecting cover 76; a plurality of the gas collecting covers 76 are symmetrically arranged on both sides of the arc-shaped clamping block 75, and the gas collecting covers 76 are correspondingly arranged in an elliptical shape by splicing the arc-shaped clamping block 75; the gas collecting covers 76 correspondingly surround the stainless steel bellows 1 and the leak-proof joint 3 in a ring shape; the gas collecting covers 76 are gas collecting areas; arc-shaped strips 761 are adaptively arranged on the inner walls of the gas collecting covers 76, and the arc-shaped strips 761 are arranged along the length direction of the stainless steel bellows 1; one end of the arc-shaped strip 761 is fixed to the side wall of the arc-shaped clamping block 75; the gas detecting device 72 is arranged in the middle of the arc-shaped strip 761; the stainless steel bellows and the leak-proof joint are located in the gas collecting area, and can gather the gas around the stainless steel bellows and the leak-proof joint; then the gas detecting device is used to detect the gas in the gas collecting area, so as to determine whether the gas leaks.

[0055] The arc-shaped clamping block 75 is provided with a conductive alarm device 711 and a gas alarm device 721; the signal output end of the electric detecting device 71 is in communication connection with the input end of the conductive alarm device 711; the signal output end of the gas detecting device 72 is in communication connection with the input end of the gas alarm device 721; the gas collecting cover 76 is detachably arranged on the arc-shaped strip 761, so as to facilitate the disassembly and assembly of the gas collecting cover. If it is found that there is gas leakage or electric leakage after detection, the gas alarm device alarms, and the control valve closes the gas pipeline, so as to ensure safety.

[0056] The above is the preferred embodiment of the present application, and the above-mentioned technical solutions can be improved and decorated in several ways without departing from the principles of the present application. These improvements and decorations should be included in the protection scope of the present application.

Claims

1. A self-protection gas pipeline system with detection function, characterized in that: The application relates to a gas multi-pass branch system (10) and a detection system (101). The gas multi-pass branch system (10) comprises a gas main pipe (2); a plurality of branch systems (102) are arranged at the gas outlet end of the gas main pipe (2) and are communicated with each other; and valves are arranged at the gas inlet ends of the branch systems (102) respectively. The detection system (101) comprises a leakage detection alarm system (103) and a sealing detection system (104). The sealing detection system (104) is connected to at least one of the branch systems (102) and is used for detecting the sealing performance of the branch system before aeration. A plurality of leakage detection alarm systems (103) are arranged correspondingly to the branch systems (102) and are used for monitoring the leakage and automatically closing the valves in real time after aeration. The branch system (102) comprises a stainless steel bellows (1) and a leakage-proof joint (3); the gas main pipe (2) is communicated with the stainless steel bellows (1) through the leakage-proof joint (3); one end of the stainless steel bellows (1) is embedded in the leakage-proof joint (3); an insulation anti-conduction structure (5) arranged in the leakage-proof joint (3) separates the outer metal layer of the leakage-proof joint (3) from the stainless steel bellows (1); one end of the insulation anti-conduction structure (5) is wrapped around the embedded end of the stainless steel bellows (1); and the other end of the insulation anti-conduction structure (5) protrudes and is located between the leakage-proof joint (3) and the stainless steel bellows (1). The insulation anti-conduction structure (5) comprises a polytetrafluoroethylene corrosion-resistant insulation sleeve (51) and an insulation flat pad (52); the polytetrafluoroethylene corrosion-resistant insulation sleeve (51) is wrapped around the embedded end of the stainless steel bellows (1); the polytetrafluoroethylene corrosion-resistant insulation sleeve (51) is correspondingly separated from the stainless steel bellows (1) and the leakage-proof joint (3); one end of the polytetrafluoroethylene corrosion-resistant insulation sleeve (51) protrudes from the overlapping area of the stainless steel bellows (1) and the leakage-proof joint (3); the other end of the polytetrafluoroethylene corrosion-resistant insulation sleeve (51) is correspondingly provided with the insulation flat pad (52); the polytetrafluoroethylene corrosion-resistant insulation sleeve (51) and the insulation flat pad (52) form a ring-shaped insulation sleeve body (53); and the ring-shaped insulation sleeve body (53) is correspondingly wrapped around the stainless steel bellows (1). A clamping groove (511) is formed in the sidewall of the protruding end of the polytetrafluoroethylene corrosion-resistant insulation sleeve (51); a clamping ring (31) is fixedly arranged on the inner wall edge of one end of the leakage-proof joint (3) correspondingly to the clamping groove (511); the leakage-proof joint (3) is clamped in the clamping groove (511) through the clamping ring (31); a plastic sleeve (84) is arranged around the middle part of the stainless steel bellows (1); and a heat-shrinkable sleeve (81) is arranged between the plastic sleeve (84) and one end of the clamping groove (511). The polytetrafluoroethylene corrosion-resistant insulating sleeve (51) is provided with an embedded groove (512) on the inner wall of one end of the corresponding insulating flat pad (52); the double-insurance leakage-proof card (4) is embedded in the embedded groove (512); the double-insurance leakage-proof card (4) has a split ring structure, and the inner teeth (41) on the inner wall of the two ends of the double-insurance leakage-proof card (4) are engaged with the outer teeth of the stainless steel corrugated pipe (1); There is a gap (521) between the double-insurance leakage-proof card (4) in the embedded groove (512) and the insulating flat pad (52); the side wall of the insulating flat pad (52) is provided with a clamping ring tooth (522) corresponding to the gap (521); the clamping ring tooth (522) corresponds to the clamping gap (521); The leakage-proof joint (3) is provided with a containing groove (11) on the inner side away from the stainless steel corrugated pipe (1); the diameter of the insulating flat pad (52) is greater than that of the polytetrafluoroethylene corrosion-resistant insulating sleeve (51), and the edge of the insulating flat pad (52) is in contact with the inner wall of the containing groove (11); the insulating flat pad (52) is provided with a sealing gasket (33) on the side away from the stainless steel corrugated pipe (1); the containing groove (11) is threadedly connected with the sealing fastener (34) at the opening end, and the sealing fastener (34) is in contact with the sealing gasket (33); the sealing fastener (34) is threadedly connected with the gas main pipe (2); a small hole is formed on the side of the sealing gasket (33) in contact with the sealing fastener (34).

2. A self-protection gas pipeline system with a detection function according to claim 1, characterized in that: The sealing detection system (104) comprises a detection pipeline section (9); the detection pipeline section (9) is the gas main pipe (2) and the connected stainless steel corrugated pipe (1); one end of the detection pipeline section (9) is closed by an interface valve (91); a part of the detection pipeline section (9) is branched and connected with a pressure measuring branch (92); the pressure measuring branch (92) is located at the front end of the branch system (102); a pressure measuring device (921) is arranged on the end of the pressure measuring branch (92) away from the detection pipeline section (9), and a control valve (922) is arranged on the pressure measuring branch (92); a pressure increasing device (93) is connected to the other end of the detection pipeline section (9); a pressure maintaining valve (931) is arranged at the joint of the pressure increasing device (93) and the gas main pipe (2); after the pressure increasing device (93) is inflated to maintain the pressure in the detection pipeline section (9), the control valve (922) is opened, and then the pressure measuring device (921) measures the pressure; The pressure measuring branch (92) is arranged on the leakage-proof joint (3) connecting the gas main pipe (2) and the stainless steel corrugated pipe (1); a gauge can be arranged on the leakage-proof joint (3); the end of the stainless steel corrugated pipe (1) away from the gas main pipe (2) is connected to an electrical device through the leakage-proof joint (3), and the interface valve (91) is arranged on the leakage-proof joint (3).

3. The self-protection gas pipeline system with detection function according to claim 1, characterized in that: It also includes the anticorrosion hot melt device (80); The anticorrosion hot melt device (80) includes hot melt baking structure (8); The heat shrink sleeve (81) is correspondingly set in the stainless steel bellows (1) and the leakage-proof joint (3) connection; The hot melt baking structure (8) includes the mounting seat (82) and the inclusion structure (83); The mounting seat (82) is provided with the inclusion structure (83) on the side of the heat shrink sleeve (81) correspondingly; The inclusion structure (83) is closed and is correspondingly arranged in the heat shrink sleeve (81), and the inclusion structure (83) is heated and radiated to bake the heat shrink sleeve (81) and is heat-shrunk and covered on the stainless steel bellows (1) and the leakage-proof joint (3) connection position.

4. A self-protection gas pipeline system with a detection function according to claim 3, characterized in that: The stainless steel bellows (1) is provided with a plastic sleeve (84) on the side wall; One end of the heat shrink sleeve (81) is correspondingly half-covered on the plastic sleeve (84), and the other end of the heat shrink sleeve (81) is covered on one end of the leakage-proof joint (3), and the heat shrink sleeve (81) is wrapped on the side wall of the stainless steel bellows (1); The side wall of the mounting seat (82) is provided with a sliding groove (821); The inclusion structure (83) includes a sliding block (831) and a hot melt baking chamber (832); The sliding block (831) is drivingly connected with the sliding device in the sliding groove (821); The hot melt baking chamber (832) is provided on the end of the sliding block (831) away from the mounting seat (82), and the hot melt baking chamber (832) is correspondingly arranged around the heat shrink sleeve (81).

5. A self-gas-pipe system with a detection function according to claim 4, characterized in that: The hot melt baking chamber (832) is open at both ends, and the hot melt baking chamber (832) is made of symmetrical half-round clamping bodies (833); The half-round clamping bodies (833) are connected with the sliding block (831) through connecting rods (834), and the oscillating device on the sliding block (831) is drivingly connected with the connecting rods (834); A plurality of baking lamps (835) are arranged on the inner wall of the half-round clamping body (833); Arc-shaped elastic sheets (836) are arranged on the inner walls of both ends of the half-round clamping body (833); The end of the arc-shaped elastic sheet (836) away from the inner wall of the half-round clamping body (833) is bent towards the middle of the hot melt baking chamber (832); A plurality of fault grooves (837) are arranged on the bent end of the arc-shaped elastic sheet (836); The bent end of the arc-shaped elastic sheet (836) is correspondingly pressed on the heat shrink sleeve (81).

6. The self-protection gas pipeline system with detection function according to claim 1, characterized in that: The leak detection alarm system (103) includes a detection cover (7); The detection cover (7) is detachably clamped on the stainless steel bellows (1), and the detection cover (7) extends and is correspondingly arranged around the leakage-proof joint (3) at both ends; An electric detection device (71) is arranged in the detection cover (7), and the electric detection device (71) is connected to the stainless steel bellows (1); A gas detection device (72) is correspondingly arranged in the detection cover (7); A control valve (73) is arranged on the leakage-proof joint (3) at the gas main pipe (2); The signal output ends of the electric detection device (71) and the gas detection device (72) are in signal communication connection with the signal input end of the control valve (73); The detection cover (7) comprises arc clamping blocks (75); a plurality of arc clamping blocks (75) are symmetrically clamped in a plastic sleeve (84), and one end of the plurality of arc clamping blocks (75) is hingedly arranged, and the other end is fixedly connected through a bolt; a through hole (741) is formed in the sidewall of the plastic sleeve (84); the detection end of the electric detection device (71) on the inner wall of the arc clamping block (75) passes through the through hole (741) and contacts the sidewall of the stainless steel corrugated pipe (1); The detection cover (7) further comprises a gas collecting cover (76); a plurality of gas collecting covers (76) are symmetrically arranged on both sides of the arc clamping block (75), and the gas collecting cover (76) is correspondingly split and arranged in an elliptical shape with the arc clamping block (75); the gas collecting cover (76) is correspondingly circumferentially surrounded on the stainless steel corrugated pipe (1) and the leak-proof joint (3); the gas collecting cover (76) is a gas collecting area; an arc-shaped strip (761) is arranged on the inner wall of the gas collecting cover (76), and the arc-shaped strip (761) is arranged along the length direction of the stainless steel corrugated pipe (1); one end of the arc-shaped strip (761) is fixed on the sidewall of the arc clamping block (75); the gas detection device (72) is arranged in the middle of the arc-shaped strip (761); The sidewall of the arc clamping block (75) is provided with a conductive alarm device (711) and a gas alarm device (721); the signal output end of the electric detection device (71) is in communication connection with the input end of the conductive alarm device (711); the signal output end of the gas detection device (72) is in communication connection with the input end of the gas alarm device (721); the gas collecting cover (76) is detachably arranged on the arc-shaped strip (761).

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