CN109210302B - Quick pressure test joint and pressure test method for pressure pipeline - Google Patents
Quick pressure test joint and pressure test method for pressure pipeline Download PDFInfo
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- CN109210302B CN109210302B CN201811103168.XA CN201811103168A CN109210302B CN 109210302 B CN109210302 B CN 109210302B CN 201811103168 A CN201811103168 A CN 201811103168A CN 109210302 B CN109210302 B CN 109210302B
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- groove
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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
- F16L25/00—Constructive types of pipe joints not provided for in groups F16L13/00 - F16L23/00 ; Details of pipe joints not otherwise provided for, e.g. electrically conducting or insulating means
- F16L25/009—Combination of a quick-acting type coupling and a conventional one
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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
- F16K17/0413—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 closure plates
-
- 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
- F16K17/044—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 with more than one spring
-
- 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
- F16K17/048—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 combined with other safety valves, or with pressure control devices
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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
- F16K31/00—Actuating devices; Operating means; Releasing devices
- F16K31/02—Actuating devices; Operating means; Releasing devices electric; magnetic
- F16K31/06—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid
- F16K31/08—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet
- F16K31/082—Actuating devices; Operating means; Releasing devices electric; magnetic using a magnet, e.g. diaphragm valves, cutting off by means of a liquid using a permanent magnet using a electromagnet and a permanent magnet
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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
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L37/00—Couplings of the quick-acting type
- F16L37/02—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined
- F16L37/025—Couplings of the quick-acting type in which the connection is maintained only by friction of the parts being joined with an inner elastic part pressed against an outer part by reason of its elasticity
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
Abstract
The invention provides a pressure pipeline rapid pressure test joint, which comprises: snap ring, sealing strip and screwing device are through inciting somebody to action the recess end of snap ring is detained the open end of the pipeline that awaits measuring, and utilize sealing strip in the recess will the snap ring with the opening of the pipeline that awaits measuring seals, reduces the pressure testing in-process pressure and reveals the circumstances that causes the pressure testing failure after, simultaneously the being close to of snap ring the pipeline open-ended one end that awaits measuring is equipped with a plurality of regulation strips to establish a plurality of regulation strip covers the circumference lateral wall of the pipeline that awaits measuring, recycle screwing device with the regulation strip carries out the screw-thread fastening, makes the regulation strip can be better with the circumference lateral wall fastening of the pipeline that awaits measuring is in the same place, reduce the pressure testing in-process pipeline that awaits measuring from this with the condition that the slippage appears in the.
Description
Technical Field
The invention relates to the technical field of pipeline engineering, in particular to a quick pressure test joint and a pressure test method for a pressure pipeline.
Background
When giving the pipeline pressure testing, generally insert the pressure testing pipe at the tip of pipeline, the pressure testing pipe is connected with the pressure pump again, pressurizes and make pressure reach the pipeline in the pressure testing pipe through the pressure pump, realizes the purpose of pipeline pressure testing from this, but at the pressure testing in-process, because of pressure pump pressure too big can cause the pressure testing pipe to appear pine take off or the pressure testing pipe and the pipeline that awaits measuring the appearance pressure leakage condition, bring inconvenience for pressure testing work.
Disclosure of Invention
The invention provides a quick pressure test joint for a pressure pipeline and a pressure test method, which are used for solving the defects that a pressure test conduit is loosened or pressure leakage occurs to the pressure test conduit and a pipeline to be tested in the traditional pipeline pressure test process.
A quick pressure test joint for a pressure pipeline,
the method comprises the following steps: the clamping ring is of a tubular structure, one end of the clamping ring is clamped on a pipeline to be tested, the other end of the clamping ring is connected with the pressure pump, one end of the clamping ring, which is connected with the pipeline to be tested, is provided with an annular groove, the groove is used for clamping into the open end of the pipeline to be tested, the clamping ring is close to the open end of the pipeline to be tested and is provided with an adjusting strip, the adjusting strip extends outwards along the end part of the clamping ring, a plurality of adjusting strips are uniformly distributed along the circumferential direction of the edge of the clamping ring, the circumferential outer side of the adjusting strip is provided with threads for the tightening devices to mutually match, the tightening devices are of annular internal thread structures,
the sealing strip is of an annular tubular structure and is arranged between the groove and the inner wall of the pipeline to be tested.
In order to make the sealing strip and the inner wall of the pipeline to be tested more firmly contacted and reduce the pressure release condition in the pressure testing process, as an optimal technical scheme, an elastic sheet is arranged between the sealing strip and the inner wall of the groove, the elastic sheets are circumferentially arranged on the side wall of the groove at intervals, each elastic sheet is of a strip-shaped sheet structure, one end of each elastic sheet is fixed at the bottom close to the groove, the other end of each elastic sheet tilts towards one side of the sealing strip, one end of each elastic sheet close to the opening of the groove is provided with a first spring, one end of each first spring is connected with the corresponding elastic sheet, and the other end of each first spring is fixedly arranged on the inner wall of; the pipeline cover that awaits measuring establish the recess with between the sealing strip, just first spring with the shell fragment is used for with the pipeline chucking that awaits measuring is in the sealing strip with between the recess.
In the pressure testing process, if the instantaneous pressure of the pressure pump is too high, the instantaneous pressure of the pipeline is easily too high, therefore, the condition of pipe explosion or reduction of the service life of the pipeline is caused, in order to reduce the condition of pipeline damage caused by overhigh instantaneous pressure in the pressure test process, as the preferred technical proposal, the inner wall of the tubular structure of the snap ring is also provided with a through hole which is arranged between the groove end of the snap ring and the pressure pump, the through hole is communicated with a pressure relief pipeline, one end of the through hole close to the snap ring is hinged with a pressure relief baffle, a second spring is arranged at one end of the pressure relief baffle close to the pressure relief pipeline, a spring seat is arranged at one end of the second spring far away from the pressure relief pipeline, the spring holder is of an annular structure, and the circumferential outer side of the spring holder and the inner side wall of the pressure relief pipeline are fixed into a whole.
In the pressure testing process, if the overpressure condition continuously occurs, the pipe bursting probability of the pipeline is larger along with the longer overpressure time, in order to reduce the pipe bursting probability when the overpressure condition continuously occurs, as a preferred technical scheme, a flexible sealing sheet is arranged on the circumferential outer side of the pressure relief baffle, an ejector rod is arranged on one surface, close to the spring, of the pressure relief baffle, the ejector rod penetrates through a circular spring wire of the second spring and is in contact with one surface, close to the spring, of the spring seat through the axial hinge activity of the pressure relief baffle,
a raised block is arranged on the contact surface of the spring seat and the ejector rod, a notch is arranged at the center of the raised block and is used for the insertion of the ejector rod,
contact blocks are arranged at the bottom in the notch and the end part of the ejector rod, first leads are embedded in the ejector rod, the pressure relief baffle, the spring seat and the second spring, one end of each first lead is communicated with the contact block of the ejector rod, the other end of each first lead passes through the ejector rod, the pressure relief baffle and the second spring, and finally the first leads are led out to the outer side of the pressure relief pipeline through the spring seat,
the outer side of the pressure relief pipeline is provided with an annular battery, the first lead is electrically connected with the annular battery,
the spring holder is kept away from the one end of second spring is equipped with the second grade and lets out the pressure valve, the second grade lets out the pressure valve and includes third spring, second pressure release board and electro-magnet, the electro-magnet pass through the second wire with the contact piece electric connection of spring holder, the electro-magnet is established to the loop configuration, and establishes the spring holder is kept away from the one end of second spring, third spring one end is connected the second pressure release board, the second pressure release board is established to magnet, the magnetism under the electro-magnet on-state with the magnetism of second pressure release board is established to repelling each other.
In order to better fix the pressure test joint at the opening of the pipeline to be tested, as an optimal technical scheme, one end of the pressure relief pipeline, which is far away from the snap ring, is connected with a bag tube, one end of the snap ring, which is close to the groove, is provided with a first air bag, the first air bag is of an annular structure, a bag opening is arranged on the first air bag, and the bag opening is communicated with the bag tube,
the outer side wall of the first air bag is fixedly arranged on the inner wall of one side of the groove far away from the sealing strip, and the annular inner wall of the first air bag is sleeved on the outer side wall of the pipeline to be tested;
a first suction disc is further arranged on the annular inner wall of the first air bag, a plurality of openings are formed in one side of the first suction disc, which is close to the pipeline to be detected, at intervals,
a second air bag is arranged between the first sucker and the first air bag, the opening hole is communicated with the second air bag,
a first suction pipe is arranged on the first suction disc in an extending way near the opening end of the groove and communicated with the second air bag,
one end of the first suction pipe, which is far away from the first suction cup, is provided with a negative pressure suction device;
a water injection pipe is arranged below the first suction pipe, one end of the water injection pipe is communicated with the second air bag, the other end of the water injection pipe is communicated with a water injector,
the bag tube is provided with a valve.
In order to better fix the pressure test joint at the opening of the pipeline to be tested, as an optimal technical scheme, a third air bag is further arranged in the groove and is embedded between the sealing strip and the inner wall of the groove, the third air bag is of an annular structure, the outer side wall of the annular structure is fixedly connected with the inner wall of the groove,
the third air bag is communicated with the first air bag through an air pipe, a second sucker is arranged on one side of the third air bag, which is far away from the groove, a plurality of holes are arranged on the second sucker at intervals, a fourth air bag is arranged between the second sucker and the third air bag, a plurality of holes are arranged on one side of the fourth air bag, which is close to the center of the groove, at intervals,
a plurality of fourth springs are arranged in the first air bag and the third air bag at intervals, the fourth springs are uniformly distributed in the bag bodies of the first air bag and the third air bag at intervals around the axial center line of the clamping ring, a first conduit and a second conduit are led out of the bag body of the fourth air bag, the first conduit is communicated with the first suction pipe, and the second conduit is communicated with the water injection pipe.
The process of quickly testing the pressure of the pressure pipeline is realized according to the following steps:
and 4, starting the pressure pump, and carrying out pressurization test on the pressure pipeline to be tested.
The invention has the following advantages:
the groove end of the clamping ring is buckled at the opening end of the pipeline to be tested, the sealing strips in the groove are utilized to seal the clamping ring and the opening of the pipeline to be tested, the condition that the pressure test fails after pressure leakage in the pressure test process is reduced, meanwhile, a plurality of adjusting strips are arranged at one end, close to the opening of the pipeline to be tested, of the clamping ring, the adjusting strips are sleeved on the circumferential outer side wall of the pipeline to be tested, and then a tightening device and the adjusting strips are utilized to carry out threaded fastening, so that the adjusting strips can be well fastened with the circumferential outer side wall of the pipeline to be tested, the condition that the pipeline to be tested and the pressure test connector slip in the pressure test process is reduced, particularly, under the flammable and explosive environments such as a chemical factory, if welding is needed to carry out pressure test, the condition that the pipeline to be tested is exploded due to the nonstandard operation is avoided, and the pressure test connector provided by the invention is utilized, the quick plug-in fixing and the pressure testing can be realized, and the burning explosion condition caused by welding is reduced.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
The technical solution of the present invention is further described in detail by the accompanying drawings and embodiments.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of a quick pressure test joint for a pressure pipeline provided by the invention;
fig. 2 is a schematic diagram of a spring plate structure of a quick pressure test joint for a pressure pipeline provided by the invention;
fig. 3 is a schematic structural view of a first spring of the quick pressure test joint for the pressure pipeline provided by the invention;
FIG. 4 is a schematic view of a pressure relief pipeline of the quick pressure test joint for a pressure pipeline according to the present invention;
FIG. 5 is a schematic diagram of a push rod structure of a quick pressure test connector for a pressure pipeline according to the present invention;
FIG. 6 is a schematic view of a connection structure of a first lead and a second lead of the quick pressure test connector for a pressure pipeline provided by the invention;
FIG. 7 is a schematic view of a first bladder connection structure of a quick pressure test joint for a pressure conduit according to the present invention;
FIG. 8 is a schematic structural view of a first suction disc of a quick pressure test joint for a pressure pipeline according to the present invention;
fig. 9 is a schematic structural view of a second suction cup of the quick pressure test connector for the pressure pipeline provided by the invention;
fig. 10 is a schematic structural view of a fourth spring of the quick pressure test joint for a pressure pipeline provided by the invention;
wherein, 1-snap ring, 2-sealing strip, 3-screwing device, 4-adjusting strip, 5-pressure pump, 6-groove, 7-pipe to be tested, 8-spring plate, 9-first spring, 11-pressure relief pipe, 12-pressure relief baffle, 13-second spring, 14-spring seat, 15-flexible sealing sheet, 16-ejector rod, 17-bulge block, 18-notch, 19-contact block, 20-first lead, 21-annular battery, 22-second pressure relief valve, 23-third spring, 24-second pressure relief plate, 25-electromagnet, 26-second lead, 27-bag tube, 28-first air bag, 29-bag opening, 30-first suction disc, 31-first suction pipe, 32-opening, 33-negative pressure suction device, 34-second air bag, 35-water injection pipe, 36-water injector, 37-valve, 38-third air bag, 39-air pipe, 40-second suction cup, 41-fourth spring, 42-fourth air bag, 43-first conduit and 44-second conduit.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
According to the embodiment of fig. 1, the invention provides a quick pressure test joint for a pressure pipeline, which is characterized in that,
the method comprises the following steps: the clamping ring 1, the sealing strip 2 and the tightening device 3, wherein the clamping ring 1 is of a tubular structure, one end of the clamping ring is clamped on a pipeline 7 to be tested, the other end of the clamping ring is connected with the pressure pump 5, one end of the pipeline 7 to be tested, which is connected with the clamping ring 1, is provided with an annular groove 6, the groove 6 is used for clamping into the open end of the pipeline 7 to be tested, the clamping ring 1 is close to the open end of the pipeline 7 to be tested and is provided with an adjusting strip 4, the adjusting strip 4 extends outwards along the end part of the clamping ring 1, the adjusting strip 4 is uniformly distributed along the circumferential direction of the edge of the clamping ring 1, the circumferential outer side of the adjusting strip 4 is provided with threads for the mutual matching of the tightening device 3,
the sealing strip 2 is designed into an annular tubular structure and is arranged between the groove 6 and the inner wall of the pipeline 7 to be measured,
the sealing strip 2 is arranged on one side of the groove 6 close to the inner wall of the pipeline 7 to be tested.
The process of quickly testing the pressure of the pressure pipeline is realized according to the following steps:
and 4, starting the pressure pump 5, and performing a pressurization test on the pressure pipeline 7 to be tested.
The groove end of the clamping ring is buckled at the opening end of the pipeline to be tested, the sealing strips in the groove are utilized to seal the clamping ring and the opening of the pipeline to be tested, the condition that the pressure test fails after pressure leakage in the pressure test process is reduced, meanwhile, a plurality of adjusting strips are arranged at one end, close to the opening of the pipeline to be tested, of the clamping ring, the adjusting strips are sleeved on the circumferential outer side wall of the pipeline to be tested, and then a tightening device and the adjusting strips are utilized to carry out threaded fastening, so that the adjusting strips can be well fastened with the circumferential outer side wall of the pipeline to be tested, the condition that the pipeline to be tested and the pressure test connector slip in the pressure test process is reduced, particularly, under the flammable and explosive environments such as a chemical factory, if welding is needed to carry out pressure test, the condition that the pipeline to be tested is exploded due to the nonstandard operation is avoided, and the pressure test connector provided by the invention is utilized, the quick plug-in fixing and the pressure testing can be realized, and the burning explosion condition caused by welding is reduced.
According to the technical scheme shown in fig. 2 and 3, in order to make the sealing strip and the inner wall of the pipeline to be tested more firmly contacted and reduce the pressure release in the pressure testing process, as a preferred technical scheme, an elastic sheet 8 is arranged between the sealing strip 2 and the inner wall of the groove 6, the elastic sheet 8 is circumferentially arranged on the side wall of the groove 6 at intervals, the elastic sheet 8 is of a strip-shaped sheet structure, one end of the elastic sheet 8 is fixed at the bottom close to the groove 6, the other end of the elastic sheet 8 is tilted towards one side of the sealing strip 2, one end of the elastic sheet 8 close to the opening of the groove is provided with a first spring 9, one end of the first spring 9 is connected with the elastic sheet 8, and the other end of the first spring is fixedly arranged on; the pipeline 7 to be tested is sleeved between the groove 6 and the sealing strip 2, and the first spring 9 and the elastic sheet 8 are used for clamping the pipeline 7 to be tested between the sealing strip 2 and the groove 6.
During the use, work as the pipeline that awaits measuring inserts during the recess, the sealing strip to the inner ring inner wall extrusion of recess, the sealing strip is by the extrusion back, the shell fragment is along with inside extrusion and deformation, by original perk straightening that makes progress, first spring compression, this moment, first spring with under the pressure and the elastic action of shell fragment, the sealing strip receives recess inner wall with the extrusion of the pipeline inner wall that awaits measuring, can firmly will the sealing strip extrudees and spacing, can guarantee the sealing performance of sealing strip is better, has still guaranteed simultaneously the pipeline that awaits measuring with the connection of recess is more fastened, reduces the pipeline that awaits measuring the condition of slippage appears at the pressure testing in-process.
As shown in FIG. 4, during the pressure testing process, if the instantaneous pressure of the pressure pump is too high, the instantaneous pressure of the pipeline is easily too high, therefore, the condition of pipe explosion or reduction of the service life of the pipeline is caused, in order to reduce the condition of pipeline damage caused by overhigh instantaneous pressure in the pressure test process, as the preferred technical proposal, the inner wall of the tubular structure of the snap ring 1 is also provided with a through hole which is arranged between the groove end of the snap ring 1 and the pressure pump 5, the through hole is communicated with a pressure relief pipeline 11, one end of the through hole close to the snap ring 1 is hinged with a pressure relief baffle 12, a second spring 13 is arranged at one end of the pressure relief baffle 12 close to the pressure relief pipeline 11, a spring seat 14 is arranged at one end of the second spring 13 far away from the pressure relief pipeline 11, the spring seat 14 is of an annular structure, and the circumferential outer side of the spring seat 14 and the inner side wall of the pressure relief pipeline 11 are fixed into a whole.
When the pressure in the twinkling of an eye of the pipeline internal pressure that awaits measuring was too big, pressure can back-up pressure release baffle, pressure release baffle then to pressure release pipeline direction motion, the second spring quilt the compression of pressure release baffle, the pressure release pipeline with through hole between the snap ring then is opened, and the pressure in the twinkling of an eye in the pipeline that awaits measuring then can be released in the pressure release pipeline, can reduce the damage condition that the too big pipeline that awaits measuring of pressure caused in the twinkling of an eye from this. And after the pressure is normal, the second spring can reset the pressure relief baffle, and the pressure relief baffle is blocked on the through hole between the clamping ring and the pressure relief pipeline again.
According to the drawings of fig. 4, 5 and 6, in the pressure testing process, if the overpressure condition occurs continuously, the pipe bursting probability is larger along with the longer overpressure time, in order to reduce the pipe bursting probability when the overpressure condition occurs continuously, as a preferable technical scheme, the circumferential outer side of the pressure relief baffle 12 is provided with a flexible sealing sheet 15, one surface of the pressure relief baffle 12 close to the spring is provided with a push rod 16, the push rod 16 passes through the circular spring wire of the second spring 13, is hinged to move through the shaft of the pressure relief baffle 12 and is contacted with one surface of the spring seat 14 close to the spring,
a raised block 17 is arranged on the contact surface of the spring seat 14 and the ejector rod 16, a notch 18 is arranged in the center of the raised block 17, the notch 18 is used for the insertion of the ejector rod 16,
contact blocks 19 are arranged at the bottom in the notch 18 and the end part of the ejector rod 16, first leads 20 are embedded in the ejector rod 16, the pressure relief baffle 12, the spring seat 14 and the second spring 13, one end of each first lead 20 is communicated with the contact block 19 of the ejector rod 16, the other end of each first lead 20 passes through the ejector rod 16, the pressure relief baffle 12, the second spring 13 and finally the spring seat 14 to lead out the first lead 20 to the outer side of the pressure relief pipeline 11,
an annular battery 21 is arranged on the outer side of the pressure relief pipeline 11, the first lead 20 is electrically connected with the annular battery 21,
the one end that the spring holder 14 kept away from the second spring 13 is equipped with second grade pressure relief valve 22, second grade pressure relief valve 22 includes third spring 23, second pressure relief board 24 and electro-magnet 25, electro-magnet 25 through second wire 26 with the contact piece 19 electric connection of spring holder 14, electro-magnet 25 is established to the loop configuration, and establishes spring holder 14 keeps away from the one end of second spring 13, third spring 23 one end is connected second pressure relief board 24, second pressure relief board 24 is established to magnet, the magnetism under the electro-magnet 25 on-state with the magnetism of second pressure relief board 24 is established to repelling each other.
The flexible sealing sheet can guarantee that the snap ring with the condition of revealing can not appear in the through hole between the pressure release pipeline, simultaneously, the ejector pin can guarantee pressure release baffle can not lead to because of the pressure is too big in the twinkling of an eye the too big and can not return the condition of normal position of opening that pressure release baffle opened.
In a normal state, the second-stage pressure release valve is set to be in a closed state, namely the third spring is in a compressed state, the magnet of the second pressure release plate is firmly adsorbed on the electromagnet, the electromagnet is not electrified in the normal state, and only is made of a piece of magnetic material or weak magnetic material, and the magnetism of the magnet is attracted with the magnetism of the magnet of the second pressure release plate;
when being in an overpressure state for a long time, the ejector rod moves upwards under the action of the pressure relief baffle, and is in contact with the convex block on the spring seat and is inserted into the groove on the convex block, after the contact block in the groove is in contact with the contact block on the ejector rod, because the annular battery is arranged on the outer side of the pressure relief pipeline, the annular battery is communicated with the contact block on the ejector rod through a first lead, the contact block in the groove is connected with the electromagnet through a second lead, after the electromagnet is electrified, the electromagnet is in magnetic repulsion with the magnet of the second pressure relief plate, the second pressure relief plate is pushed open by the strong magnetic field of the electromagnet, the third spring is bounced, and at the moment, the second pressure relief valve can be opened. The pressure in the pipeline to be tested can be released when the pipeline to be tested is in an overpressure state for a long time, and the condition of pipe explosion or pipeline damage of the pipeline to be tested is reduced.
According to the illustration in fig. 7, 8, 9 and 10, in order to better fix the pressure test joint at the opening of the pipeline to be tested, as a preferred technical solution, one end of the pressure relief pipeline 11 far away from the snap ring 1 is connected with a bag tube 27, one end of the snap ring 1 near the groove 6 is provided with a first air bag 28, the first air bag 28 is in an annular structure, the first air bag 28 is provided with a bag opening 29, the bag opening 29 is communicated with the bag tube 27,
the outer side wall of the first air bag 28 is fixedly arranged on the inner wall of one side of the groove 6 far away from the sealing strip 2, and the annular inner wall of the first air bag 28 is sleeved on the outer side wall of the pipeline 7 to be tested;
a first suction disc 30 is further arranged on the annular inner wall of the first air bag 28, a plurality of openings 32 are arranged at intervals on one side of the first suction disc 30 close to the pipeline 7 to be measured,
a second air bag 34 is arranged between the first suction disc 30 and the first air bag 28, the opening 32 is communicated with the second air bag 34,
the first suction disc 30 is provided with a first suction pipe 31 extending near the opening end of the groove 6, the first suction pipe 31 is communicated with the second air bag 34,
a negative pressure suction device 33 is arranged at one end of the first suction pipe 31 far away from the first suction disc 30;
a water injection pipe 35 is arranged below the first suction pipe 31, one end of the water injection pipe 35 is communicated with the second air bag 34, the other end is communicated with a water injector 36,
the bag tube 27 is provided with a valve 37.
The groove 6 is also internally provided with a third air bag 38, the third air bag 38 is embedded between the sealing strip 2 and the inner wall of the groove 6, the third air bag 38 is of an annular structure, the outer side wall of the annular structure is fixedly connected with the inner wall of the groove 6,
the third air bag 38 is communicated with the first air bag 28 through an air pipe 39, a second suction cup 40 is arranged on one side of the third air bag 38 far away from the groove 6, a plurality of holes 32 are arranged on the second suction cup 40 at intervals, a fourth air bag 42 is arranged between the second suction cup 40 and the third air bag 38, a plurality of holes 32 are arranged on one side of the fourth air bag 42 close to the center of the groove 6 at intervals,
a plurality of fourth springs 41 are arranged in the first air bag 28 and the third air bag 38 at intervals, the fourth springs 41 are uniformly distributed in the bag bodies of the first air bag 38 and the third air bag 38 at intervals around the axial center line of the snap ring 1, a first guide pipe 43 and a second guide pipe 44 are led out of the bag body of the fourth air bag 42, the first guide pipe 43 is communicated with the first suction pipe 31, and the second guide pipe 44 is communicated with the water injection pipe 35.
When the pressure testing device works, when the pressure in the pipeline to be tested is too large due to the fact that the pressure of the air pump is too large, the pressure relief pipeline can release the pressure through the pressure relief baffle and the second-stage pressure relief valve, the air is relieved through the second-stage pressure relief valve, then the air is drained to the first air bag through the air bag pipe, the inner wall of the pipeline to be tested can be tightly attached between the annular inner wall of the first air bag and the sealing strip after the air is expanded through the air, therefore, the situation that the pressure testing connector is slipped due to the fact that the air pressure is too large can be reduced, meanwhile, the sucking disc arranged below the first air bag can be firmly adsorbed on the outer side wall of the pipeline to be tested, when the pressure testing device is used, the first suction pipe is used for sucking air, and after the first suction pipe is sucked through the negative pressure, the air in the second air bag is pumped out, air between the sucker and the outer side wall of the pipeline to be tested is pumped out by utilizing the opening, so that the sucker is firmly adsorbed on the outer side wall of the pipeline to be tested, and the condition that the pressure test connector is separated from the opening end of the pipeline to be tested is further enhanced; simultaneously, first gasbag still guarantees carrying out the pressure testing in-process, the pipeline that awaits measuring with the gas leakage condition can not appear between the snap ring, has further strengthened its sealed effect, and then has strengthened the accuracy of pipeline pressure testing.
In another embodiment, if the sealing strip is invalid, the valve can also be used as an inflation port, when the sealing strip is invalid, the first air bag, the third air bag and the air pipe are utilized to attach the inner side wall, the outer side wall and the open end of the pipeline to be detected, and the valve is inflated to expand the first air bag and the third air bag and wrap the inner side wall and the outer side wall of the pipeline to be detected, so that the sealing purpose is further realized.
The second sucking disc that sets up on the third gasbag can firmly adsorb on the inside wall of pipeline that awaits measuring, and pass through negative pressure getter device will first sucking disc with the second sucking disc with air between the pipeline that awaits measuring is taken out, can realize first sucking disc with the second sucking disc firmly adsorbs the purpose of pipeline inside wall and lateral wall awaits measuring.
Further, it is right first sucking disc with before the second sucking disc carries out the negative pressure and breathes in, utilize the water injector to be in water injection intraductal water injection of water injection, water flows in through its water injection pipe the second gasbag with in the fourth gasbag, flow in through the trompil again first sucking disc with between the pipeline that awaits measuring, and the second sucking disc with between the pipeline that awaits measuring, later recycle negative pressure getter device will the second gasbag with water and air between the fourth gasbag are taken out, because have water after carrying out negative pressure suction, first sucking disc with the increase of suction between second sucking disc and the pipeline that awaits measuring, further guaranteed the difficult circumstances of breaking away of pressure testing joint.
Through first gasbag with set up in the third gasbag the fourth spring, it is usable elasticity between the fourth spring will first gasbag with the third gasbag firmly establishes on the lateral wall and the inside wall of the pipeline that awaits measuring, further reduce the pressure testing joint deviates from the condition of the pipeline that awaits measuring.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. The utility model provides a pressure pipeline quick pressure testing connects which characterized in that includes: snap ring (1), sealing strip (2) and tightening device (3), snap ring (1) is established to the tubular structure, and one end card is established on pipeline to be measured (7), and force pump (5) is connected to the other end, snap ring (1) is connected the one end of pipeline to be measured (7) is equipped with annular recess (6), recess (6) are used for the card to go into the open end of pipeline to be measured (7), snap ring (1) is close to the open end of pipeline to be measured (7) is equipped with regulation strip (4), regulation strip (4) are followed the outside extension setting of tip of snap ring (1), just regulation strip (4) are followed the border circumference equipartition of snap ring (1) has a plurality ofly, the circumference outside of regulation strip (4) is equipped with the screw thread that supplies tightening device (3) mutually supports, tightening device (3) are established to annular internal thread structure,
the sealing strip (2) is of an annular tubular structure and is arranged between the groove (6) and the inner wall of the pipeline to be tested (7);
still be equipped with the through hole on the tubular structure inner wall of snap ring (1), the through hole is established the groove end of snap ring (1) with between force pump (5), the through hole intercommunication has pressure release pipeline (11), the through hole is close to the one end of snap ring (1) articulates there is pressure release baffle (12), pressure release baffle (12) are close to the one end of pressure release pipeline (11) is equipped with second spring (13), second spring (13) are kept away from the one end of pressure release pipeline (11) is equipped with spring holder (14), establish into the annular structure spring holder (14), the circumference outside of spring holder (14) with the inside wall of pressure release pipeline (11) is fixed as an organic whole.
2. The pressure pipeline quick pressure test joint according to claim 1, wherein an elastic sheet (8) is arranged between the sealing strip (2) and the inner wall of the groove (6), the elastic sheets (8) are circumferentially arranged on the side wall of the groove (6) at intervals, the elastic sheet (8) is of a strip-shaped sheet structure, one end of the elastic sheet (8) is fixed at the bottom close to the groove (6), the other end of the elastic sheet (8) is tilted towards one side of the sealing strip (2), one end of the elastic sheet (8) close to the opening of the groove is provided with a first spring (9), one end of the first spring (9) is connected with the elastic sheet (8), and the other end of the first spring is fixedly arranged on the inner wall of the groove (6); the pipeline (7) to be tested is sleeved between the groove (6) and the sealing strip (2), and the first spring (9) and the elastic sheet (8) are used for clamping the pipeline (7) to be tested between the sealing strip (2) and the groove (6).
3. The pressure pipeline rapid pressure test joint according to claim 1, wherein a flexible sealing sheet (15) is arranged on the circumferential outer side of the pressure relief baffle (12), an ejector rod (16) is arranged on one surface of the pressure relief baffle (12) close to the spring, the ejector rod (16) penetrates through the circular spring wire of the second spring (13), is hinged and moves through the shaft of the pressure relief baffle (12) and is in contact with one surface of the spring seat (14) close to the spring,
a raised block (17) is arranged on the contact surface of the spring seat (14) and the ejector rod (16), a notch (18) is arranged at the center of the raised block (17), the notch (18) is used for the insertion of the ejector rod (16),
the bottom in the notch (18) and the end part of the ejector rod (16) are respectively provided with a contact block (19), the ejector rod (16), the pressure relief baffle (12), the spring seat (14) and the second spring (13) are respectively embedded with a first lead (20), one end of the first lead (20) is communicated with the contact block (19) of the ejector rod (16), the other end of the first lead passes through the ejector rod (16), the pressure relief baffle (12) and the second spring (13), and finally the first lead (20) is led out to the outer side of the pressure relief pipeline (11) through the spring seat (14),
an annular battery (21) is arranged on the outer side of the pressure relief pipeline (11), the first lead (20) is electrically connected with the annular battery (21),
spring holder (14) are kept away from the one end of second spring (13) is equipped with second grade pressure relief valve (22), second grade pressure relief valve (22) include third spring (23), second pressure relief board (24) and electro-magnet (25), electro-magnet (25) through second wire (26) with contact piece (19) electric connection of spring holder (14), electro-magnet (25) are established to the loop configuration, and establish spring holder (14) are kept away from the one end of second spring (13), third spring (23) one end is connected second pressure relief board (24), second pressure relief board (24) are established to magnet, magnetism under electro-magnet (25) the on-state with the magnetism of second pressure relief board (24) is established to repel each other.
4. The quick pressure test connector for the pressure pipeline according to claim 1, wherein one end of the pressure relief pipeline (11) far away from the snap ring (1) is connected with a bag tube (27), one end of the snap ring (1) close to the groove (6) is provided with a first air bag (28), the first air bag (28) is of an annular structure, the first air bag (28) is provided with a bag opening (29), the bag opening (29) is communicated with the bag tube (27),
the outer side wall of the first air bag (28) is fixedly arranged on the inner wall of one side of the groove (6) far away from the sealing strip (2), and the annular inner wall of the first air bag (28) is sleeved on the outer side wall of the pipeline to be tested (7);
a first sucker (30) is also arranged on the annular inner wall of the first air bag (28), a plurality of open holes (32) are arranged at intervals on one side of the first sucker (30) close to the pipeline (7) to be tested,
a second air bag (34) is arranged between the first suction cup (30) and the first air bag (28), the opening hole (32) and the second air bag (34) are communicated,
a first suction pipe (31) extends from the first suction cup (30) and is close to the opening end of the groove (6), the first suction pipe (31) is communicated with the second air bag (34),
a negative pressure suction device (33) is arranged at one end, away from the first suction cup (30), of the first suction tube (31);
a water injection pipe (35) is arranged below the first suction pipe (31), one end of the water injection pipe (35) is communicated with the second air bag (34), the other end is communicated with a water injector (36),
a valve (37) is arranged on the bag tube (27).
5. The pressure pipeline rapid pressure test connector according to claim 4, wherein a third air bag (38) is further arranged in the groove (6), the third air bag (38) is embedded between the sealing strip (2) and the inner wall of the groove (6), the third air bag (38) is of an annular structure, the outer side wall of the annular structure is fixedly connected with the inner wall of the groove (6),
the third air bag (38) is communicated with the first air bag (28) through an air pipe (39), a second sucker (40) is arranged on one side, far away from the groove (6), of the third air bag (38), a plurality of open holes (32) are formed in the second sucker (40) at intervals, a fourth air bag (42) is arranged between the second sucker (40) and the third air bag (38), and a plurality of open holes (32) are formed in one side, close to the center of the groove (6), of the fourth air bag (42) at intervals,
a plurality of fourth springs (41) are arranged in the first air bag (28) and the third air bag (38) at intervals, the fourth springs (41) are uniformly distributed in the air bags of the first air bag (38) and the third air bag (38) at intervals around the axial center line of the snap ring (1), a first guide pipe (43) and a second guide pipe (44) are led out of the air bag of the fourth air bag (42), the first guide pipe (43) is communicated with the first suction pipe (31), and the second guide pipe (44) is communicated with the water injection pipe (35).
6. A pressure pipeline rapid pressure testing method is characterized by comprising the following steps:
step 1, obtaining a pressure pipeline rapid pressure test joint as claimed in any one of claims 1 to 5;
step 2, buckling a groove (6) of the clamping ring (1) at the opening end of the pipeline to be tested (7), and enabling a sealing strip (2) in the groove (6) to be located between the groove (6) and the inner wall of the pipeline to be tested (7);
step 3, screwing the screwing device (3) onto the circumferential outer side wall of the adjusting strip (4) to ensure that the adjusting strip (4) is tightly wrapped on the circumferential outer side wall of the pipeline (7) to be measured,
and 4, starting the pressure pump (5) to perform pressurization test on the pressure pipeline (7) to be tested.
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| CN201811103168.XA CN109210302B (en) | 2018-09-20 | 2018-09-20 | Quick pressure test joint and pressure test method for pressure pipeline |
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| CN201811103168.XA CN109210302B (en) | 2018-09-20 | 2018-09-20 | Quick pressure test joint and pressure test method for pressure pipeline |
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| CN110345326A (en) * | 2019-08-09 | 2019-10-18 | 北京凌天世纪控股股份有限公司 | A kind of fire-fighting robot is automatically de- with device |
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| CN111928060A (en) * | 2020-08-05 | 2020-11-13 | 安徽铭泰仪表有限公司 | Connecting structure for pipe fitting valve |
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| CN114495453B (en) * | 2022-02-18 | 2023-11-21 | 常德力速达液压机械有限公司 | Hydraulic real-time monitoring alarm device convenient to installation |
| CN116952471B (en) * | 2023-09-08 | 2023-12-15 | 新乡航兴液压动力有限公司 | Air tightness detection assembly and detection method for high-pressure pump body |
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| JP5081691B2 (en) * | 2008-03-31 | 2012-11-28 | 因幡電機産業株式会社 | Fluid pipe obturator |
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| WO1999030124A1 (en) * | 1997-12-09 | 1999-06-17 | Cromar Sales And Service Limited | The testing of the integrity of a fluid coupling |
| CN103104459A (en) * | 2011-11-09 | 2013-05-15 | 雷双华 | Sand control pump ground pressure test auxiliary device and pressure test method thereof |
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