CN114776901A - Gas pipeline joint that leakproofness is strong - Google Patents
Gas pipeline joint that leakproofness is strong Download PDFInfo
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- CN114776901A CN114776901A CN202210683425.1A CN202210683425A CN114776901A CN 114776901 A CN114776901 A CN 114776901A CN 202210683425 A CN202210683425 A CN 202210683425A CN 114776901 A CN114776901 A CN 114776901A
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- Prior art keywords
- linkage
- connecting cylinder
- gas pipeline
- fixedly connected
- ring
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0212—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member using specially adapted sealing means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K17/00—Safety valves; Equalising valves, e.g. pressure relief valves
- F16K17/02—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side
- F16K17/04—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded
- F16K17/0406—Safety valves; Equalising valves, e.g. pressure relief valves opening on surplus pressure on one side; closing on insufficient pressure on one side spring-loaded in the form of balls
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L13/00—Non-disconnectible pipe-joints, e.g. soldered, adhesive or caulked joints
- F16L13/10—Adhesive or cemented joints
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/005—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts comprising locking means for the threaded member
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L19/00—Joints in which sealing surfaces are pressed together by means of a member, e.g. a swivel nut, screwed on or into one of the joint parts
- F16L19/02—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member
- F16L19/0206—Pipe ends provided with collars or flanges, integral with the pipe or not, pressed together by a screwed member the collar not being integral with the pipe
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention relates to the field of gas pipeline joints, in particular to a gas pipeline joint with high sealing performance. The technical problem is as follows: the gas pipeline joint is sealed by the single-ring rubber ring, the effect is low, and gas leakage is easy to occur in the gas pipeline conveying process. The technical scheme is as follows: a gas pipeline joint with strong sealing performance comprises a connecting cylinder, a connecting component and the like; the connecting barrel is provided with a connecting component. Extrude first sealing washer to the gas pipeline surface through fixation nut, accomplish the one-level sealed to the gas pipeline, and carry out spacing fixed to fixation nut through the elastic component, avoid fixation nut to appear returning back the phenomenon because of vibrations and lead to the gas to leak, move to the gas pipeline through fixation nut linkage third sealing washer, make third sealing washer in close contact with gas pipeline port, accomplish the second grade and seal, pour into sealed glue through first pipe to first cavity, accomplish tertiary seal, improve sealed effect greatly.
Description
Technical Field
The invention relates to the field of gas pipeline joints, in particular to a gas pipeline joint with high sealing performance.
Background
Gas pipe joint is used for carrying out sealing connection to two gas pipeline, prior art is with two gas pipeline connection in-process, can extrude the sealing washer to gas pipeline surface, in order to reach sealed effect, and the sealed effect of single circle rubber circle is low, lead to pipeline transport gas in-process to appear the gas leakage phenomenon, can arouse great incident, there is very big potential safety hazard, if pour into sealed glue in order to improve sealed effect in the clearance through pipe joint and gas pipeline, then sealed glue spills into the phenomenon to gas pipeline inner wall can appear, thereby pollute the gas in the pipeline, can arouse gas pipeline blocking phenomenon even.
Disclosure of Invention
The invention provides a gas pipeline joint with strong sealing performance, aiming at overcoming the defects that a gas pipeline joint is sealed by a single-ring rubber ring, the effect is low, and gas leakage is easy to occur in the process of pipeline gas conveying.
The technical scheme of the invention is as follows: a gas pipeline joint with high sealing performance comprises a connecting cylinder, a second sealing ring, a third sealing ring, a linkage block, a connecting assembly and an anti-overflow assembly; two third grooves are formed in the upper side of the inner wall of the connecting cylinder, and the third grooves are triangular; the connecting cylinder is provided with a connecting component which is used for connecting the first pipeline and the second pipeline and sealing the surface of the first pipeline and the second pipeline; the first pipeline and the second pipeline are sealed by pouring sealant into the third groove, and air is discharged through the third groove in the glue pouring process; the left part and the right part of the connecting cylinder are both connected with a second sealing ring in a sliding way; a third sealing ring is fixedly connected inside each of the two second sealing rings; the middle part of the connecting cylinder is connected with eight linkage blocks in a sliding manner, every four linkage blocks form a group, and the two groups of linkage blocks are used for pushing the second sealing ring to be connected in a sliding manner; one side of the linkage block, which is close to the second sealing ring, is an inclined plane, and the area of the second sealing ring, which is opposite to the linkage block, is also set as the inclined plane; the second sealing ring is linked to move towards the first pipeline or the second pipeline through the connecting assembly and the linkage block, and the second sealing ring extrudes the third sealing ring to a port of the first pipeline or the second pipeline; an anti-overflow assembly used for relieving pressure at the joint of the gas pipeline is arranged in the middle of the outer side of the connecting cylinder.
Furthermore, the connecting assembly comprises a fixing nut, a first fixing ring, a second fixing ring, a first sealing ring, a linkage set and a glue pouring set; the left part and the right part of the outer side of the connecting cylinder are connected with a fixing nut in a screwing way; the inner sides of the two fixing nuts are fixedly connected with a first fixing ring; a second fixing ring is fixedly connected to the left part and the right part of the inner side of the connecting cylinder; a first sealing ring is clamped between each adjacent first fixing ring and each adjacent second fixing ring; the cross section of the first sealing ring is triangular; one side of the first fixing ring close to the first sealing ring is an inclined plane; one side of the second fixing ring close to the first sealing ring is an inclined plane; the inner sides of the first fixing ring, the second fixing ring and the first sealing ring are all contacted with a first pipeline; a linkage set is arranged in the connecting cylinder; the glue pouring set is installed on the upper side of the connecting cylinder.
Further, the connecting assembly further comprises an elastic member; an elastic part is fixedly connected to the left part and the right part of the outer side of the connecting cylinder, four elastic parts on the same side are arranged in an annular array, and barbs are arranged on the elastic parts close to the adjacent fixing nuts; a first groove is formed in the opposite sides of the two fixing nuts, and the section of the first groove is L-shaped.
Furthermore, two first cavities are formed among the first pipeline, the second pipeline, the connecting cylinder, the two second fixing rings and the two second sealing rings, and sealant is poured into the first cavities through the third grooves.
Further, the first sealing ring is made of rubber.
Furthermore, the linkage set comprises a first linkage rod, a linkage ring, a first spring, a limiting ring and an elastic telescopic rod; the left part and the right part of the connecting cylinder are both connected with four first linkage rods in a sliding manner; one side of the first linkage rod close to the linkage block is an inclined plane; a linkage ring is fixedly connected between every two adjacent first linkage rods; the two linkage rings are respectively contacted with the adjacent first fixing rings; the two link rings are respectively contacted with the adjacent fixing nuts; a first spring is sleeved on each of the eight first linkage rods, one end of each first spring is fixedly connected with the adjacent linkage ring, the other end of each first spring is fixedly connected with the connecting cylinder, and the first springs are positioned in second grooves formed in the connecting cylinders; two limiting rings are fixedly connected to the middle part of the inner side of the connecting cylinder; the two limiting rings are used for limiting the movement of the second sealing ring; sixteen elastic telescopic rods are fixedly connected inside the connecting cylinder, every two adjacent elastic telescopic rods form a group, and eight groups of elastic telescopic rods are fixedly connected with the adjacent linkage blocks respectively.
Further, the glue filling assembly comprises a first round pipe and a first screwing plug; the left part of the upper side and the right part of the upper side of the connecting cylinder are both communicated with a first circular tube; the inner sides of the two first round pipes are in threaded connection with a first screwing plug.
Further, the anti-overflow assembly comprises a cylinder, an open cabin, a buoyancy member, a pressure sensor, a second circular tube, an air escape valve and a pressure relief set; a cylinder is fixedly connected to the middle part of the outer side of the connecting cylinder; an opening cabin body is fixedly connected to the upper side of the inner wall of the cylinder; the inner side of the open cabin body is connected with a buoyancy piece in a sliding way; a pressure sensor is arranged at the left part of the upper side of the cylinder; the middle part of the lower side of the cylinder is communicated with a second circular pipe; the inner side of the second circular pipe is in threaded connection with an air escape valve; the middle part of the upper side of the connecting cylinder is provided with a pressure relief set.
Further, a second cavity is formed between the cylinder and the connecting cylinder.
Further, the pressure relief set comprises a third round pipe, a first connecting block, a second linkage rod, a second connecting block, a second spring and a piston ball; the middle part of the upper side of the connecting cylinder is communicated with a third round pipe; the upper side of the third round pipe is fixedly connected with a first connecting block; the middle part of the first connecting block is connected with a second linkage rod in a sliding manner; a second connecting block is fixedly connected to the upper side of the second linkage rod; a second spring is sleeved on the second linkage rod, one end of the second spring is fixedly connected with the second connecting block, and the other end of the second spring is fixedly connected with the first connecting block; the lower part of the second linkage rod is fixedly connected with a piston ball; the piston ball is in contact with the third round pipe.
Has the advantages that: when the gas pipeline sealing device is used, the first sealing ring is extruded to the surface of a gas pipeline through the fixing nut, primary sealing of the gas pipeline is completed, the fixing nut is limited and fixed through the elastic piece, and gas leakage caused by the phenomenon that the fixing nut retreats due to vibration is avoided;
the third sealing ring is linked to move towards the gas pipeline through the fixing nut, so that the third sealing ring is in close contact with the port of the gas pipeline to complete secondary sealing, sealant is filled into the first cavity through the first circular tube to complete tertiary sealing, the sealing effect is greatly improved, in the process of filling the sealant, the sealant is prevented from overflowing into the inner wall of the port of the first pipeline through the third sealing ring, so that the gas pollution is avoided, the third groove is formed, the sealant pushes air in the first cavity to draw close to the middle part along the inclined surface of the third groove and discharge the air, the phenomenon that the sealant extrudes the air into the left end and the right end of the upper side of the first cavity is avoided, and the sealing effect is further prevented from being influenced;
still realized when gas pressure increases suddenly, carried out the pressure release to the junction of two gas pipes automatically, avoided the high-pressure gas to leak from the junction of two gas pipes, improved the security greatly.
Drawings
FIG. 1 is a schematic structural diagram of a gas pipeline joint with high sealing performance according to the invention;
FIG. 2 is a cross-sectional view of a gas line connection of the present invention having high sealing performance;
FIG. 3 is a first partial structural view of the connecting assembly of the present invention;
FIG. 4 is a second partial structural view of the connecting assembly of the present invention;
FIG. 5 is a third partial structural view of the connecting assembly of the present invention;
FIG. 6 is a fourth partial structural view of the connecting assembly of the present invention;
FIG. 7 is a fifth partial structural view of the coupling assembly of the present invention;
FIG. 8 is a sixth partial structural view of the connecting assembly of the present invention;
FIG. 9 is a schematic structural view of the spill prevention assembly of the present invention;
fig. 10 is an enlarged view of the gas pipe joint a of the present invention having high sealing performance.
Wherein: 1-a first pipe, 2-a connecting cylinder, 3-a second pipe, 201-a fixing nut, 202-a first fixing ring, 203-a second fixing ring, 204-a first sealing ring, 205-an elastic member, 206-a first linkage rod, 207-a linkage ring, 208-a first spring, 209-a second sealing ring, 2010-a third sealing ring, 2011-a limiting ring, 2012-an elastic telescopic rod, 2013-a linkage block, 2014-a first round pipe, 2015-a first screw plug, 301-a cylinder, 302-an open cabin, 303-a buoyancy member, 304-a pressure sensor, 305-a second round pipe, 306-an air release valve, 307-a third round pipe, 308-a first connecting block, 309-a second linkage rod, 3010-a second connecting block, 3011-a second spring, 3012-piston ball, 91-first groove, 92-second groove, 93-third groove, 94-first cavity, 95-second cavity.
Detailed Description
The present invention will be further described with reference to specific examples, which are intended to illustrate, but not limit the scope of the invention.
Example 1
A gas pipeline joint with high sealing performance is shown in figures 1-8 and comprises a connecting cylinder 2, a second sealing ring 209, a third sealing ring 2010, a linkage block 2013, a connecting assembly and an anti-overflow assembly; two third grooves 93 are formed in the upper side of the inner wall of the connecting cylinder 2, and the third grooves 93 are triangular; the connecting cylinder 2 is provided with a connecting component; a second sealing ring 209 is connected to the left part and the right part of the connecting cylinder 2 in a sliding manner; a third sealing ring 2010 is fixedly connected inside each of the two second sealing rings 209; the middle of the connecting cylinder 2 is slidably connected with eight linkage blocks 2013, every four linkage blocks 2013 form a group, and the two groups of linkage blocks 2013 are used for pushing the second sealing ring 209 to be slidably connected; one side of the linkage block 2013 close to the second sealing ring 209 is an inclined surface, and the area of the second sealing ring 209 opposite to the linkage block 2013 is also provided with an inclined surface; the middle part of the outer side of the connecting cylinder 2 is provided with an anti-overflow component.
The connecting assembly comprises a fixing nut 201, a first fixing ring 202, a second fixing ring 203, a first sealing ring 204, a linkage set and a glue pouring set; the left part and the right part of the outer side of the connecting cylinder 2 are connected with a fixing nut 201 in a screwing way; a first fixing ring 202 is welded on the inner sides of the two fixing nuts 201; a second fixing ring 203 is welded on the left part and the right part of the inner side of the connecting cylinder 2; a first sealing ring 204 is clamped between every two adjacent first fixing rings 202 and second fixing rings 203; the cross section of the first sealing ring 204 is triangular; one side of the first fixing ring 202 close to the first sealing ring 204 is an inclined plane; one side of the second fixing ring 203 close to the first sealing ring 204 is an inclined plane; the inner sides of the first fixing ring 202, the second fixing ring 203 and the first sealing ring 204 are all contacted with the first pipeline 1; a linkage set is arranged in the connecting cylinder 2; the upper side of the connecting cylinder 2 is provided with a glue pouring set.
A plurality of damping grooves are formed in the outer side of the fixing nut 201.
The connection assembly further comprises a resilient member 205; the left part and the right part of the outer side of the connecting cylinder 2 are fixedly connected with an elastic part 205, the four elastic parts 205 on the same side are arranged in an annular array, and one side of each elastic part 205, which is close to the adjacent fixing nut 201, is provided with a barb; two fixing nuts 201 are both seted up a first recess 91 in the opposite side to first recess 91 cross-section is the L shape.
Two first cavities 94 are formed among the first pipeline 1, the second pipeline 3, the connecting cylinder 2, the two second fixing rings 203 and the two second sealing rings 209, and sealant is poured into the first cavities 94 through the third grooves 93.
The first seal ring 204 is made of rubber.
The linkage set comprises a first linkage rod 206, a linkage ring 207, a first spring 208, a limiting ring 2011 and an elastic telescopic rod 2012; the left part and the right part of the connecting cylinder 2 are both connected with four first linkage rods 206 in a sliding way; one side of the first linkage rod 206 close to the linkage block 2013 is an inclined plane; a linkage ring 207 is welded between every two adjacent four first linkage rods 206; the two linkage rings 207 are respectively in contact with the adjacent first fixing rings 202; the two linkage rings 207 are respectively contacted with the adjacent fixing nuts 201; a first spring 208 is sleeved on each of the eight first linkage rods 206, one end of each first spring 208 is welded with the adjacent linkage ring 207, the other end of each first spring 208 is welded with the connecting cylinder 2, and each first spring 208 is positioned in the second groove 92 formed in the connecting cylinder 2; two limiting rings 2011 are welded in the middle of the inner side of the connecting cylinder 2; the two limiting rings 2011 are used for limiting the movement of the second sealing ring 209; sixteen elastic telescopic rods 2012 are fixedly connected inside the connecting cylinder 2, every two adjacent elastic telescopic rods 2012 form a group, and eight groups of elastic telescopic rods 2012 are respectively and fixedly connected with the adjacent linkage blocks 2013.
The glue filling set comprises a first round pipe 2014 and a first screwed plug 2015; the left part and the right part of the upper side of the connecting cylinder 2 are both communicated with a first circular tube 2014; a first screw plug 2015 is connected to the inner sides of the two first circular tubes 2014 in a threaded manner.
A plurality of damping grooves are formed in the outer side of the first screwing plug 2015.
Firstly, the first pipeline 1 and the second pipeline 3 are gas pipelines to be connected, two fixing nuts 201 are screwed by hands to rotate, so that the fixing nuts 201 move towards the middle of the connecting cylinder 2, the fixing nuts 201 drive the first fixing rings 202 to move, the second fixing rings 203 are fixed, the first sealing rings 204 are extruded, the first sealing rings 204 are deformed towards the first pipeline 1, so that the first sealing rings 204 are tightly attached to the first pipeline 1, the sealing effect is achieved, when the fixing nuts 201 move towards the middle of the connecting cylinder 2, the first grooves 91 on the fixing nuts 201 contact the barbs on the elastic pieces 205, the elastic pieces 205 are extruded towards the connecting cylinder 2 when the fixing nuts 201 move towards the right, when the barbs on the elastic pieces 205 are completely positioned in the first grooves 91, the first grooves 91 stop extruding the barbs on the elastic pieces 205, so that the elastic pieces 205 rebound, therefore, the barb on the elastic piece 205 is rebounded into the first groove 91, the fixing nut 201 is limited and reinforced, and gas leakage caused by the phenomenon that the fixing nut 201 retreats due to vibration is avoided; in the process of manually screwing the fixing nut 201, the fixing nut 201 drives the first fixing ring 202 to move, the first fixing ring 202 pushes the linkage ring 207 to move, the linkage ring 207 pushes the first linkage rod 206 to move and compresses the first spring 208, based on the wedge block principle, as shown in the figure, the first linkage rod 206 pushes the linkage block 2013 to move towards the axis of the connecting cylinder 2 and stretch the elastic telescopic rod 2012, based on the wedge block principle, the left linkage block 2013 pushes the second sealing ring 209 to move towards the right port of the first pipeline 1, the right linkage block 2013 pushes the other second sealing ring 209 to move towards the left port of the second pipeline 3, and then the second sealing ring 209 extrudes the third sealing ring 2010 to the end parts of the first pipeline 1 or the second pipeline 3, so that the sealing effect of the first pipeline 1 and the connecting cylinder 2 and the second pipeline 3 is further improved; after fixation nut 201 blocks into elastic component 205, artifical twist stopper 2015 of twisting off, then pour into sealed glue into to first cavity 94 from first pipe 2014, when sealed glue will fill up first cavity 94, sealed glue promotes the inside air of first cavity 94 and draws close to the middle part along the inclined plane that is triangular third recess 93, thereby make the air in first cavity 94 discharge from first pipe 2014, avoid sealed glue to extrude the phenomenon of the both ends about the air of first cavity 94 upside, and then avoid influencing sealed effect, after the completion of encapsulating, artifical twist stopper 2015 of twisting turns on can the normal position, further improve sealed effect to first pipeline 1 through sealed glue this moment, simultaneously avoid sealed glue to overflow into first pipeline 1 inboard through third sealing washer 2010, thereby avoid polluting the gas.
Example 2
On the basis of the embodiment 1, as shown in fig. 1-2 and fig. 9-10, the spill prevention assembly comprises a cylinder 301, an open cabin 302, a buoyancy member 303, a pressure sensor 304, a second circular tube 305, a gas release valve 306 and a pressure relief set; a cylinder 301 is welded in the middle of the outer side of the connecting cylinder 2; an open cabin body 302 is welded on the upper side of the inner wall of the cylinder 301; the inner side of the open cabin 302 is connected with a buoyancy member 303 in a sliding manner; a pressure sensor 304 is arranged at the left part of the upper side of the cylinder 301; the middle part of the lower side of the cylinder 301 is communicated with a second round pipe 305; the inner side of the second round pipe 305 is in threaded connection with an air release valve 306; the middle part of the upper side of the connecting cylinder 2 is provided with a pressure relief set.
A second cavity 95 is formed between the cylinder 301 and the connector barrel 2.
The pressure relief set comprises a third round pipe 307, a first connecting block 308, a second linkage rod 309, a second connecting block 3010, a second spring 3011 and a piston ball 3012; the middle part of the upper side of the connecting cylinder 2 is communicated with a third round pipe 307; the upper side of the third round pipe 307 is connected with a first connecting block 308 by a bolt; the middle part of the first connecting block 308 is connected with a second linkage rod 309 in a sliding way; a second connecting block 3010 is welded on the upper side of the second linkage rod 309; a second spring 3011 is sleeved on the second linkage rod 309, one end of the second spring 3011 is welded to the second connection block 3010, and the other end of the second spring 3011 is welded to the first connection block 308; a piston ball 3012 is fixedly connected to the lower portion of the second linkage rod 309; the piston ball 3012 is in contact with the third round tube 307.
In the process of conveying gas, if the pressure of the gas is suddenly increased, the high-pressure gas pushes the piston ball 3012 to move upwards, the piston ball 3012 drives the second linkage rod 309 to slide upwards in the first connecting block 308, the second linkage rod 309 drives the second connecting block 3010 to move upwards, the second connecting block 3010 stretches the second spring 3011, the piston ball 3012 moves upwards to stop contacting with the third circular pipe 307, so that the gas flows into the second cavity 95 from the third circular pipe 307 to be collected, then the second spring 3011 rebounds to drive the piston ball 3012 to move back to the original position, and the third circular pipe 307 is blocked again, so that when the pressure of the gas is suddenly increased, the joint of the two gas pipes is automatically decompressed, the high-pressure gas is prevented from leaking from the joint of the two gas pipes, and the safety is greatly improved; when the content of the gas in the second cavity 95 is high, the gas pushes the buoyancy member 303 to slide upwards in the open cabin 302 through pressure, so that the buoyancy member 303 contacts the pressure sensor 304, the pressure sensor 304 sends a signal, then a worker maintains according to the signal, the worker sleeves the external air suction device into the outer side of the second circular tube 305, the air release valve 306 is opened, and then the gas in the second cavity 95 flows into the external air suction device through the second circular tube 305, so that the exhaust operation is completed.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.
Claims (10)
1. The utility model provides a gas pipeline that leakproofness is strong connects, characterized by: the anti-overflow device comprises a connecting cylinder (2), a second sealing ring (209), a third sealing ring (2010), a linkage block (2013), a connecting assembly and an anti-overflow assembly; two third grooves (93) are formed in the upper side of the inner wall of the connecting cylinder (2), and the third grooves (93) are triangular; a connecting component which is used for connecting the first pipeline (1) and the second pipeline (3) and sealing the surface of the first pipeline and the second pipeline is arranged on the connecting cylinder (2); sealing the first pipeline (1) and the second pipeline (3) by pouring sealant into the third groove (93), and discharging air through the third groove (93) in the glue pouring process; a second sealing ring (209) is connected to the left part and the right part of the connecting cylinder (2) in a sliding way; a third sealing ring (2010) is fixedly connected inside each of the two second sealing rings (209); the middle of the connecting cylinder (2) is slidably connected with eight linkage blocks (2013), every four linkage blocks (2013) form a group, and the two groups of linkage blocks (2013) are used for pushing the second sealing ring (209) to be slidably connected; one side of the linkage block (2013) close to the second sealing ring (209) is an inclined surface, and the area of the second sealing ring (209) opposite to the linkage block (2013) is also provided with an inclined surface; the second sealing ring (209) is linked to move towards the first pipeline (1) or the second pipeline (3) through the connecting assembly and the linkage block (2013), and the second sealing ring (209) extrudes the third sealing ring (2010) to a port of the first pipeline (1) or the second pipeline (3); an anti-overflow assembly used for relieving pressure at the joint of the gas pipeline is arranged in the middle of the outer side of the connecting cylinder (2).
2. The gas pipeline joint with high sealing performance as claimed in claim 1, wherein: the connecting assembly comprises a fixing nut (201), a first fixing ring (202), a second fixing ring (203), a first sealing ring (204), a linkage set and a glue pouring set; the left part and the right part of the outer side of the connecting cylinder (2) are connected with a fixed nut (201) in a screwing way; a first fixing ring (202) is fixedly connected to the inner sides of the two fixing nuts (201); a second fixing ring (203) is fixedly connected to the left part and the right part of the inner side of the connecting cylinder (2); a first sealing ring (204) is clamped between each adjacent first fixing ring (202) and each adjacent second fixing ring (203); the cross section of the first sealing ring (204) is triangular; one side of the first fixing ring (202) close to the first sealing ring (204) is an inclined plane; one side of the second fixing ring (203) close to the first sealing ring (204) is an inclined plane; the inner sides of the first fixing ring (202), the second fixing ring (203) and the first sealing ring (204) are all in contact with the first pipeline (1); a linkage set is arranged in the connecting cylinder (2); the upper side of the connecting cylinder (2) is provided with a glue pouring set.
3. The gas pipeline joint with high sealing performance as claimed in claim 2, wherein: the connection assembly further comprises a resilient member (205); an elastic piece (205) is fixedly connected to the left part and the right part of the outer side of the connecting cylinder (2), the four elastic pieces (205) on the same side are arranged in an annular array, and barbs are arranged on the elastic pieces (205) close to the adjacent fixing nuts (201); two fixation nut (201) are all seted up one first recess (91) to the side in opposite directions to first recess (91) cross-section is the L shape.
4. The high-tightness gas pipeline joint as claimed in claim 3, wherein: two first cavities (94) are formed between the first pipeline (1), the second pipeline (3), the connecting cylinder (2), the two second fixing rings (203) and the two second sealing rings (209), and a sealant is poured into the first cavities (94) through the third grooves (93).
5. The gas pipeline joint with high sealing performance as claimed in claim 4, wherein: the first sealing ring (204) is made of rubber.
6. The gas pipeline joint with high sealing performance as claimed in claim 4, wherein: the linkage set comprises a first linkage rod (206), a linkage ring (207), a first spring (208), a limiting ring (2011) and an elastic telescopic rod (2012); the left part and the right part of the connecting cylinder (2) are both connected with four first linkage rods (206) in a sliding manner; one side of the first linkage rod (206) close to the linkage block (2013) is an inclined plane; a linkage ring (207) is fixedly connected between every two adjacent first linkage rods (206); the two linkage rings (207) are respectively contacted with the adjacent first fixed rings (202); the two linkage rings (207) are respectively contacted with the adjacent fixing nuts (201); a first spring (208) is sleeved on each of the eight first linkage rods (206), one end of each first spring (208) is fixedly connected with the adjacent linkage ring (207), the other end of each first spring (208) is fixedly connected with the connecting cylinder (2), and the first springs (208) are located in second grooves (92) formed in the connecting cylinder (2); two limiting rings (2011) are fixedly connected with the middle part of the inner side of the connecting cylinder (2); the two limiting rings (2011) are used for limiting the movement of the second sealing ring (209); sixteen elastic telescopic rods (2012) are fixedly connected inside the connecting cylinder (2), every two adjacent elastic telescopic rods (2012) form a group, and eight groups of elastic telescopic rods (2012) are fixedly connected with the adjacent linkage blocks (2013) respectively.
7. The gas pipeline joint with high sealing performance as claimed in claim 6, wherein: the glue filling set comprises a first round pipe (2014) and a first screwing plug (2015); the left part of the upper side and the right part of the upper side of the connecting cylinder (2) are both communicated with a first circular tube (2014); the inner sides of the two first round pipes (2014) are both in threaded connection with a first screwing plug (2015).
8. The gas pipeline joint with high sealing performance as claimed in claim 7, wherein: the spill-proof assembly comprises a cylinder (301), an open cabin body (302), a buoyancy member (303), a pressure sensor (304), a second circular pipe (305), a gas release valve (306) and a pressure relief set; a cylinder (301) is fixedly connected with the middle part of the outer side of the connecting cylinder (2); an opening cabin body (302) is fixedly connected to the upper side of the inner wall of the cylinder (301); the inner side of the open cabin body (302) is connected with a buoyancy piece (303) in a sliding way; a pressure sensor (304) is arranged at the left part of the upper side of the cylinder (301); the middle part of the lower side of the cylinder (301) is communicated with a second round pipe (305); the inner side of the second round pipe (305) is in threaded connection with an air release valve (306); the middle part of the upper side of the connecting cylinder (2) is provided with a pressure relief set.
9. The high-sealability gas pipeline joint as claimed in claim 8, wherein: a second cavity (95) is formed between the cylinder (301) and the connecting cylinder (2).
10. The high-sealability gas pipeline joint as claimed in claim 9, wherein: the pressure relief set comprises a third round pipe (307), a first connecting block (308), a second linkage rod (309), a second connecting block (3010), a second spring (3011) and a piston ball (3012); the middle part of the upper side of the connecting cylinder (2) is communicated with a third round pipe (307); a first connecting block (308) is fixedly connected to the upper side of the third circular pipe (307); the middle part of the first connecting block (308) is connected with a second linkage rod (309) in a sliding way; a second connecting block (3010) is fixedly connected to the upper side of the second linkage rod (309); a second spring (3011) is sleeved on the second linkage rod (309), one end of the second spring (3011) is fixedly connected with a second connecting block (3010), and the other end of the second spring (3011) is fixedly connected with the first connecting block (308); a piston ball (3012) is fixedly connected to the lower part of the second linkage rod (309); the piston ball (3012) is in contact with the third tube (307).
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CN202210683425.1A CN114776901B (en) | 2022-06-17 | 2022-06-17 | Gas pipeline joint that leakproofness is strong |
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CN114776901B CN114776901B (en) | 2022-09-02 |
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CN115808422A (en) * | 2022-11-18 | 2023-03-17 | 中国特种设备检测研究院 | Maintenance equipment for hydrogenation station |
CN116877829A (en) * | 2023-08-22 | 2023-10-13 | 武汉市燃气集团有限公司 | Under-pressure rush-repair device for gas pipeline |
CN117212585A (en) * | 2023-11-09 | 2023-12-12 | 君海管业(山东)有限公司 | High-pressure quick connector for plastic pipe |
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CN117212585A (en) * | 2023-11-09 | 2023-12-12 | 君海管业(山东)有限公司 | High-pressure quick connector for plastic pipe |
CN117212585B (en) * | 2023-11-09 | 2024-01-26 | 君海管业(山东)有限公司 | High-pressure quick connector for plastic pipe |
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