CN108318194A - It is a kind of to simulate the pressure device and its working method that pipeline single port is suppressed - Google Patents
It is a kind of to simulate the pressure device and its working method that pipeline single port is suppressed Download PDFInfo
- Publication number
- CN108318194A CN108318194A CN201810346725.4A CN201810346725A CN108318194A CN 108318194 A CN108318194 A CN 108318194A CN 201810346725 A CN201810346725 A CN 201810346725A CN 108318194 A CN108318194 A CN 108318194A
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- Prior art keywords
- single port
- suppressed
- seal
- pressure device
- hole
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Classifications
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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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2853—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for pipe joints or seals
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
Abstract
The invention discloses a kind of pressure device that simulation pipeline single port is suppressed and its working methods, including seal and compression to block；The seal is rounded, and upper surface is plane, and lower surface is the cambered surface that can be fitted with the inner wall of the pipe cambered surface of ductile iron pipe；The seal center is equipped with circular groove；The center of the upper surface of seal is equipped with through-hole A；It includes pedestal and the protruding portion by being extended upward at left and right sides of pedestal to compress card.The bottom surface of the annular sidewall of seal is equipped with annular groove；Sealing ring is equipped in annular groove.Which solves the demand for quickly detecting composite impervious waterproof coating leakproofness, the simulation single port that can carry out the impervious waterproof coating of ductile iron pipeline cement lining surface recombination suppresses test.
Description
Technical field
The present invention relates to metallic conduit single port to suppress technical field, is beaten more particularly to what a kind of simulation pipeline single port was suppressed
Pressure device.
Background technology
Ductile iron pipe has the characteristics that excellent corrosion resistance, reliable intensity and interface are flexible, worldwide
It is more and more widely used.The regular size range of present ductile iron pipe includes DN80-DN2600, ductile iron pipe
Road inner wall anti-corrosive coating is generally cement mortar liner.
In the actual installation process of ductile cast iron pipeline, in order to ensure installation quality, after usually carrying out pipeline installation
Water flowing suppress test, to ensure cushion rubber installation specification in place, the equal ne-leakage of pipeline and joint.This is for middle small pipe-line
For be suitable, and for heavy-caliber pipeline (DN1200 or more), since pipe diameter is big, length is long, pipeline integral installation
After suppress, once it is poorly sealed and leak to find that cushion rubber is not mounted to position, prodigious installation workload of doing over again will be caused, and
And a large amount of water waste can be caused.
Based on the above reason, presently relevant heavy-caliber pipeline in such a way that single port is suppressed for detect cushion rubber installation and
Sealing effect.
(1- cast iron tubing as shown in Figure 1；2- cement mortar liners；3- supported flanges；4- tests sealing material (rubber)；
5- tests sealed valve；6- cushion rubbers；7- microcracks), single port suppresses each tube and individually suppresses test, and only in bell and spigot junction
The two-way 200mm of unidirectional 100mm within the scope of tested, have it is easy to operate, it is time saving and energy saving, after cushion rubber leak replace facilitate
Feature, the one kind for becoming detection heavy-caliber pipeline sealing joint in recent years suppress mode.
50268 standards of reference standard GB, single port bulge test pressure requirements are：
(1) abundant impregnation stage
After test tool fills water, the water pressure test is carried out again after preferably fully being impregnated under conditions of no more than operating pressure,
Soaking time is general >=and 24 hours.
(2) the trial test stage
Hydraulic pressure in test tool is slowly risen into 2bar test pressures simultaneously voltage stabilizing 5 minutes, it during which can if any pressure decline
Water filling moisturizing, but test pressure 2bar must not be higher than, checking pipe joint, accessory, cement mortar etc., whether there is or not leak, damages
Phenomena such as；It should stop pressure testing in time when having leak, damage phenomenon, ascertain the reason and take pressure testing again after corresponding measure.
(3) the master trip stage
Test pressure is adjusted to stop water filling ftercompction after 5bar, is stablized 5 minutes, when pressure after five minutes is without being decreased obviously,
When at rubber sealing without leak, the single port water pressure test is qualified.
Cement mortar liner is the main anti-corrosion inner coating of ductile iron pipe, but cement mortar liner itself is that one kind is more
Permeability lining coating, there are macroscopical and microcosmic ducts that a large amount of micron order diameters do not wait on liner matrix, and in cement surface
Many macroscopic micro-cracks are frequently present of, water channel channel when this is suppressed as single port is suppressed Shi Shuihui and suppressed from single port
Cement mortar inner lining surface escapes outside tooling overlay area, pressurize is difficult to when causing to suppress, as shown in Figure 1.This, which becomes, judges glue
Circle whether the severe jamming factor of leak.
Therefore, it is necessary to research and develop a kind of impervious waterproof compound seal coating of cement mortar liner, keep cement lining impervious
Waterproof eliminates disturbing factor, to meet the practical application request that single port suppresses detection rubber sealing.
But it has the following problems：
1) single port stamping tooling is larger, and bolt quantity is numerous.When single port bulge test, it is necessary first to by Tube formation to one
It rises, and installation single port stamping tooling carries out suppressing test in the duct, whole process step is relatively complicated, and time and effort consuming.
2) when carrying out single port to the pipeline with impervious waterproof compound seal coating and suppressing, once occur leaking and can not
The phenomenon that pressurize, it is difficult to which judgement is cushion rubber leakage or composite impervious waterproof coating leakage.
Invention content
The technical problem to be solved in the present invention is to provide a kind of pressure device that simulation pipeline single port is suppressed and its work sides
Method.Realize pressures cycle when single port is suppressed and control, so as to quick inspection institute research and development composite impervious waterproof coating it is close
Seal effect.After composite impervious waterproof coating, which meets sealing performance, to be required, then assembled conduit interface carries out single port and suppresses detection peace
The leakproofness of cushion rubber after dress.
A kind of pressure device that simulation pipeline single port is suppressed, including seal and compression are blocked；The seal is rounded, square
Shape or ellipse, upper surface are plane；The seal center is equipped with circular groove；The center of the upper surface of seal is equipped with
Through-hole A；The card that compresses includes pedestal and the protruding portion by being extended upward at left and right sides of pedestal.
The pressure device that simulation pipeline single port of the present invention is suppressed, the seal lower surface is can be with spheroidal graphite cast-iron
The cambered surface that the inner wall of the pipe cambered surface of pipe fits；The bottom surface of the annular sidewall of the seal is equipped with annular groove；The ring
Sealing ring is equipped in connected in star.
The pressure device that simulation pipeline single port of the present invention is suppressed, the through-hole A are connected with pipeline is suppressed.
The pressure device suppressed of simulation pipeline single port of the present invention, the pedestal is U-shaped, the pedestal side it is upper
End is equipped with tapped through hole B, and the protruding portion of the same side is equipped with tapped through hole C.
The pressure device that simulation pipeline single port of the present invention is suppressed, the outer surface of two protruding portions in the left and right is
Inclined-plane.
The pressure device suppressed of simulation pipeline single port of the present invention is all provided in the tapped through hole B and tapped through hole C
There are M16 bolts.
The pressure device that simulation pipeline single port of the present invention is suppressed, wherein suppress the entrance and the first sink of pipeline
Be connected, suppress the outlet connection seal of pipeline, the suction line of first sink is equipped with pressure gauge, and with check valve A
Outlet be connected, the entrance of the check valve A is connected with the outlet of pump, and the piston of the pump is adjusted by operating handle,
The outlet of pump is connected with the outlet of check valve B, and the entrance of the check valve B is connected with the second sink；First sink
Outlet line be connected with relief valve, the outlet of relief valve accesses in the second sink.
The working method for the pressure device that simulation pipeline single port of the present invention is suppressed, includes the following steps：
The lower surface of seal is bonded placement with the inner wall of the pipe cambered surface of ductile iron pipe；It is inserted into and compresses card, wherein band
There are the side of tapped through hole B and tapped through hole C to contact and fix with the upper surface of seal, the other side is contacted with pipeline outer wall；
Seal is pressed in inner wall of the pipe by the bolt in tapped through hole B and tapped through hole C；It connects through-hole A and suppresses sebific duct,
By suppressing pump priming supercharging, and by the hydraulic pressure inside pressure gauge real-time display, by sluicing valve exhaust on pressure pump and
Hydraulic pressure is controlled, composite impervious waterproof coating leakproofness is detected.
The working method for the pressure device that simulation pipeline single port of the present invention is suppressed, includes the following steps：In spheroidal graphite
It inspects position at two in cast iron pipe inner wall of the pipe by random samples at random, detects the composite impervious waterproof coating in ductile iron pipe inner wall of the pipe
Leakproofness.
The working method for the pressure device that simulation pipeline single port of the present invention is suppressed, includes the following steps：Work as spheroidal graphite
The sealing effect of composite impervious waterproof coating in cast iron pipe inner wall of the pipe is met the requirements, and that unloads that Imitating pipeline single port suppresses beats
Pressure device loads onto the single port stamping tooling of heavy-caliber pipeline, carries out the sealing effect that single port suppresses detection cushion rubber.
Compared with the existing technology, protrusion effect of the invention is：
(1) pressure device that simulation pipeline single port is suppressed solves the need for quickly detecting composite impervious waterproof coating leakproofness
It asks, the simulation single port that can carry out the impervious waterproof coating of ductile iron pipeline cement lining surface recombination suppresses test.
(2) working method for the pressure device that simulation pipeline single port is suppressed is easy to operate, time saving and energy saving.
Below in conjunction with the accompanying drawings explanation and specific embodiment to the pressure device suppressed of simulation pipeline single port of the present invention and its
Working method is described further.
Description of the drawings
Fig. 1 is that single port suppresses schematic diagram；
Fig. 2 is the sectional view of seal；
Fig. 3 is the upward view of seal；
Fig. 4 is the sectional view for compressing card；
Fig. 5 is the right view for compressing card；
Fig. 6 is to simulate pipeline connection diagram in the pressure device that pipeline single port is suppressed.
Specific implementation mode
As shown in Figure 2-5, a kind of pressure device that simulation pipeline single port is suppressed, including seal 11 and compression card 21；Institute
It is rounded to state seal 11.In other variant embodiments, or rectangular or oval.
11 upper surface of seal is plane；11 center of the seal is equipped with circular groove 12；The upper surface of seal 11
Center be equipped with through-hole A13；The protruding portion for compressing card 21 and including pedestal 22 and being extended upward by 22 left and right sides of pedestal
23.Through-hole A13 is connected with pipeline is suppressed.As shown in fig. 6, the entrance for suppressing pipeline 39 is connected with the first sink 33, suppress
The outlet of pipeline 39 connects seal 11, and the suction line of first sink 33 is equipped with pressure gauge 38, and with check valve A36's
Outlet is connected, and the entrance of the check valve A36 is connected with the outlet of pump 34, and the piston of the pump 34 passes through operating handle 35
It adjusts, pumps 34 outlet and be connected with the outlet of check valve B32, the entrance of the check valve B32 is connected with the second sink 31；
The outlet line of first sink 33 is connected with relief valve 37, and the outlet of relief valve 37 accesses in the second sink 31.
11 lower surface of seal is the cambered surface 12 that can be fitted with the inner wall of the pipe cambered surface of ductile iron pipe；The seal
The bottom surface of 11 annular sidewall is equipped with annular groove 14；Sealing ring is equipped in the annular groove 14.
Pedestal 22 is U-shaped, and the upper end of 22 side of the pedestal is equipped with tapped through hole B24, on the protruding portion 23 of the same side
Equipped with tapped through hole C25.It is equipped with M16 bolts in tapped through hole B24 and tapped through hole C25.
The outer surface of two protruding portions 23 in left and right is inclined-plane, is effectively reduced the weight for compressing card, and be readily disassembled.
Its working method includes the following steps：
The lower surface of seal 11 is bonded placement with the inner wall of the pipe cambered surface of ductile iron pipe；It is inserted into and compresses card 21,
In be threaded through-hole B24 and the side of tapped through hole C25 is contacted with the upper surface of seal 11, the other side connects with pipeline outer wall
It touches；Seal is pressed in inner wall of the pipe by the bolt in tapped through hole B24 and tapped through hole C25；Connect through-hole A13 with
Sebific duct is suppressed, by suppressing pump priming supercharging, and by the hydraulic pressure inside pressure gauge real-time display, passes through the sluicing on pressure pump
Valve exhaust and control hydraulic pressure；Detect composite impervious waterproof coating leakproofness.
According to above-mentioned steps, position at two is inspected by random samples at random in ductile iron pipe inner wall of the pipe, detect ductile iron pipe pipe
The leakproofness of composite impervious waterproof coating on road inner wall.
When the sealing effect of the composite impervious waterproof coating in ductile iron pipe inner wall of the pipe is met the requirements, Imitating pipe is unloaded
The pressure device that road single port is suppressed loads onto the single port stamping tooling (as shown in Figure 1) of heavy-caliber pipeline, carries out single port and suppresses detection
The sealing effect of cushion rubber.Single port is carried out according to Fig. 1 to suppress, each tube individually suppresses test, and only in the list of bell and spigot junction
It is tested into the two-way 200mm of 100mm.
Embodiment described above is only that the preferred embodiment of the present invention is described, not to the model of the present invention
It encloses and is defined, under the premise of not departing from design spirit of the present invention, technical side of the those of ordinary skill in the art to the present invention
The various modifications and improvement that case is made should all be fallen into the protection domain of claims of the present invention determination.
Claims (10)
1. a kind of pressure device that simulation pipeline single port is suppressed, it is characterised in that：Including seal (11) and compress card (21)；Institute
It is rounded, rectangular or oval to state seal (11), upper surface is plane；Seal (11) center is equipped with circular groove
(12)；The center of the upper surface of seal (11) is equipped with through-hole A (13)；Compression card (21) includes pedestal (22) and by pedestal
(22) protruding portion (23) that the left and right sides extends upward.
2. the pressure device that simulation pipeline single port according to claim 1 is suppressed, it is characterised in that：The seal (11)
Lower surface is the cambered surface (12) that can be fitted with the inner wall of the pipe cambered surface of ductile iron pipe；The annular sidewall of the seal (11)
Bottom surface be equipped with annular groove (14)；Sealing ring is equipped in the annular groove (14).
3. the pressure device that simulation pipeline single port according to claim 2 is suppressed, it is characterised in that：The through-hole A (13)
It is connected with pipeline is suppressed.
4. the pressure device that simulation pipeline single port according to claim 3 is suppressed, it is characterised in that：The pedestal (22) is in
U-shaped, the upper end of pedestal (22) side is equipped with tapped through hole B (24), and the protruding portion (23) of the same side is logical equipped with screw thread
Hole C (25).
5. the pressure device that simulation pipeline single port according to claim 4 is suppressed, it is characterised in that：The left and right two is prominent
The outer surface for going out portion (23) is inclined-plane.
6. the pressure device that simulation pipeline single port according to claim 5 is suppressed, it is characterised in that：The tapped through hole B
(24) and in tapped through hole C (25) M16 bolts are equipped with.
7. the pressure device that simulation pipeline single port according to claim 6 is suppressed, it is characterised in that：Suppress pipeline (39)
Entrance is connected with the first sink (33), suppresses the outlet connection seal (11) of pipeline (39), first sink (33)
Suction line is equipped with pressure gauge (38), and is connected with the outlet of check valve A (36), the entrance and pump of the check valve A (36)
(34) outlet is connected, and the piston of the pump (34) is adjusted by operating handle (35), pumps outlet and the check valve B of (34)
(32) outlet is connected, and the entrance of the check valve B (32) is connected with the second sink (31)；First sink (33)
Outlet line is connected with relief valve (37), and the outlet of relief valve (37) accesses in the second sink (31).
8. according to the working method for the pressure device that any simulation pipeline single port of claim 1-7 is suppressed, feature exists
In including the following steps：
The lower surface of seal (11) is bonded placement with the inner wall of the pipe cambered surface of ductile iron pipe；It is inserted into and compresses card (21),
In be threaded through-hole B (24) and the side of tapped through hole C (25) contacts and fixes, the other side with the upper surface of seal (11)
It is contacted with pipeline outer wall；Seal is pressed to inner wall of the pipe by the bolt in tapped through hole B (24) and tapped through hole C (25)
On；Connection through-hole A and suppresses sebific duct at (13), by suppressing pump priming supercharging, and by the hydraulic pressure inside pressure gauge real-time display,
By the sluicing valve exhaust and control hydraulic pressure on pressure pump, the composite impervious waterproof coating in ductile iron pipe inner wall of the pipe is detected
Leakproofness.
9. the working method for the pressure device that simulation pipeline single port according to claim 8 is suppressed, which is characterized in that including
Following steps：It inspects position at two by random samples at random in ductile iron pipe inner wall of the pipe, detects answering in ductile iron pipe inner wall of the pipe
Close the leakproofness of impervious waterproof coating.
10. the working method for the pressure device that simulation pipeline single port according to claim 9 is suppressed, which is characterized in that packet
Include following steps：When the sealing effect of the composite impervious waterproof coating in ductile iron pipe inner wall of the pipe is met the requirements, lower die is unloaded
The pressure device that quasi- pipeline single port is suppressed, loads onto the single port stamping tooling of heavy-caliber pipeline, carries out single port and suppresses detection cushion rubber
Sealing effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346725.4A CN108318194B (en) | 2018-04-18 | 2018-04-18 | Pressing device for simulating single-port pressing of pipeline and working method of pressing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810346725.4A CN108318194B (en) | 2018-04-18 | 2018-04-18 | Pressing device for simulating single-port pressing of pipeline and working method of pressing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108318194A true CN108318194A (en) | 2018-07-24 |
| CN108318194B CN108318194B (en) | 2023-06-27 |
Family
ID=62897129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810346725.4A Active CN108318194B (en) | 2018-04-18 | 2018-04-18 | Pressing device for simulating single-port pressing of pipeline and working method of pressing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108318194B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2587486A1 (en) * | 1985-09-19 | 1987-03-20 | Bignier Schmid Laurent | Method for testing leaktightness and application to the pits of nuclear power stations |
| US6520022B1 (en) * | 2000-11-08 | 2003-02-18 | The Reliable Automatic Sprinkler Co., Inc. | Direct connect pressure tester arrangement |
| JP2004354152A (en) * | 2003-05-28 | 2004-12-16 | Ryobi Ltd | Leak tester holder |
| CN101865754A (en) * | 2010-07-20 | 2010-10-20 | 哈尔滨工业大学 | Device for detecting gas tightness of composite material laminated plate |
| CN202693226U (en) * | 2012-07-18 | 2013-01-23 | 南京宝泰特种材料股份有限公司 | Pressure application tooling for pipe |
| CN102980811A (en) * | 2012-11-30 | 2013-03-20 | 济南兰光机电技术有限公司 | Pressure resistance testing device and method of bubble cap |
| CN203337341U (en) * | 2013-07-26 | 2013-12-11 | 成都陵川特种工业有限责任公司 | Connection tube sealing mechanism detecting exhaust manifold air tightness |
| CN206095550U (en) * | 2016-10-25 | 2017-04-12 | 天津国安盟固利新能源有限公司 | Sealed enclosure detection device |
| CN206832420U (en) * | 2017-06-02 | 2018-01-02 | 中建安装工程有限公司 | A kind of single port pressure testing device for large diameter pipeline |
-
2018
- 2018-04-18 CN CN201810346725.4A patent/CN108318194B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2587486A1 (en) * | 1985-09-19 | 1987-03-20 | Bignier Schmid Laurent | Method for testing leaktightness and application to the pits of nuclear power stations |
| US6520022B1 (en) * | 2000-11-08 | 2003-02-18 | The Reliable Automatic Sprinkler Co., Inc. | Direct connect pressure tester arrangement |
| JP2004354152A (en) * | 2003-05-28 | 2004-12-16 | Ryobi Ltd | Leak tester holder |
| CN101865754A (en) * | 2010-07-20 | 2010-10-20 | 哈尔滨工业大学 | Device for detecting gas tightness of composite material laminated plate |
| CN202693226U (en) * | 2012-07-18 | 2013-01-23 | 南京宝泰特种材料股份有限公司 | Pressure application tooling for pipe |
| CN102980811A (en) * | 2012-11-30 | 2013-03-20 | 济南兰光机电技术有限公司 | Pressure resistance testing device and method of bubble cap |
| CN203337341U (en) * | 2013-07-26 | 2013-12-11 | 成都陵川特种工业有限责任公司 | Connection tube sealing mechanism detecting exhaust manifold air tightness |
| CN206095550U (en) * | 2016-10-25 | 2017-04-12 | 天津国安盟固利新能源有限公司 | Sealed enclosure detection device |
| CN206832420U (en) * | 2017-06-02 | 2018-01-02 | 中建安装工程有限公司 | A kind of single port pressure testing device for large diameter pipeline |
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| Publication number | Publication date |
|---|---|
| CN108318194B (en) | 2023-06-27 |
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