The hose assembly pressure testing is with quick-replaceable joint device and hose assembly pressure testing system
The present invention is mainly concerned with hose pressure detection facility field, and particularly a kind of pressure testing is with piecing devices and pressure testing system.
Hose assembly refers to that two ends have installed the flexible pipe of pipe joint additional.The Female connector fittings of hose assembly joint can slide within the specific limits along the joint core bar, and the head of joint core bar matches with the end joint with the conical surface of depression that the conical surface of a protrusion can be connected with needs, comes fastening with Female connector fittings.
The pressure test of hose assembly is that an important parameter of hose assembly is originated, and is also the dependence of hose assembly quality assurance.Traditional hose assembly adopts following steps clamping and dismounting before and after pressure test:
1, choose an energy and the transit joint that hose assembly upper connection to be tested matches, transit joint is screwed on the end joint of testing machine (screw-thread fit); Transit joint is to change minor diameter of thread or convex surface concave surface or the externally threaded joint of internal thread that coordinates different sizes, and there is axial hole the centre;
2, an end of hose assembly and transit joint is worked good, tighten Female connector fittings;
3, the hose assembly the other end is tightened with plug, carried out pressure test; Plug coordinates with pipe joint, is used for blocking pipeline, and the similar transit joint of shape do not have through hole;
4, test is complete screws down hose assembly from transit joint;
5, the end joint of transit joint from pressure testing machine screwed down;
6, change the transit joint of another one and next root hose assembly to be tested, repeat above step.
The deficiency that above-mentioned this pressure testing clamping (dismounting) mode exists is: hose assembly of every test, all need the same action of repetition, complex steps, waste time and energy, efficient is extremely low.And screw is twisted not tightly pressurize incessantly, and test result is just inaccurate.Screw is twisted tension, might hurt screw thread, causes potential safety hazard.
In addition, prior art needs to adopt following steps in carrying out the pressure test process:
Need when 1, beginning pressure exhaust manually plug is unscrewed, allow air discharge fully;
2, exhaust is complete tightens plug again, continues to boost until reach required pressure criteria;
3, test the complete plug of unscrewing, back out plug after release.
The deficiency of this mode is troublesome poeration, inefficiency.
Summary of the invention
The technical problem to be solved in the present invention just is: for the technical problem of prior art existence, the invention provides and a kind ofly can improve installation rate, so improve testing efficiency, the hose assembly pressure testing that reduces labor intensity is with quick-replaceable joint device and hose assembly pressure testing system.
For solving the problems of the technologies described above, the present invention by the following technical solutions:
A kind of hose assembly pressure testing quick-replaceable joint device, it comprises transit joint, piston cylinder and the transition core that is connected successively, the rodless cavity of the cylinder body of described piston cylinder is communicated with transit joint, one end of described transition core and the piston sleeve of piston cylinder are connected together, the other end of described transition core has the structure that is connected with the hose assembly joint, offer connecting pipeline on described piston, described transition core is provided with delivery hole, even be provided with when pressure the pressure controlled valve of the pipeline conducting from connecting pipeline to delivery hole higher than setting value between described delivery hole and connecting pipeline.
As a further improvement on the present invention:
Be equiped with elastic reset spare in cylinder body between described piston and transit joint.
Be provided with seal ring between the exterior edge face of described transit joint and cylinder body.
Also comprise a hose clip connected components, an end of described hose clip connected components is connected in an end of close transition core on cylinder body, and the other end of described hose clip connected components is connected with the hose assembly joint.
Described hose clip connected components comprises baffle plate head and the baffle plate more than two, and described baffle plate headgear is connected on an end of cylinder body, and described baffle plate is inserted on the baffle plate head and can moves along the radial direction of baffle plate head.
Described hose clip connected components is claw or chuck.
Be provided with the one-way valve in parallel with pressure controlled valve in described connecting pipeline, the entrance of described one-way valve is connected with delivery hole.
The piston of described transition core and piston cylinder coordinates by wedge surface.
Described quick-replaceable joint device comprises the different transition core that several can match from different hose assemblies.
The present invention further provides a kind of hose assembly pressure testing system, it comprises the pressure testing loop and is installed in booster pump and two piecing devices on the pressure testing loop, be used for connecting hose assembly to be tested between described two piecing devices, described piecing devices are above-mentioned quick-replaceable joint device.
Described pressure testing loop is provided with one and the off-load exhaust high-pressure stop valve of described booster pump parallel connection.
Compared with prior art, the invention has the advantages that: in the present invention, the impacting force of sealing surface provides by the pressure of pressure testing liquid, does not need to compress by threaded together Quick labor-saving, do not worry not tightening because of screw thread the problem of revealing, improved the reliability of pressure testing.
Description of drawings
Fig. 1 is the perspective view that quick-replaceable joint device is used in hose assembly pressure testing of the present invention;
To be hose assembly pressure testing of the present invention look the sectional structure schematic diagram with the master of quick-replaceable joint device to Fig. 2;
Fig. 3 is the frame principles schematic diagram of pressure testing system of the present invention.
1, transit joint; 101, center hole; 2, cylinder body; 3, piston; 301, connecting pipeline; 4, baffle plate head; 5, transition core; 501, delivery hole; 6, baffle plate; 7, elastic reset spare; 8, seal ring; 9, pressure controlled valve; 10, one-way valve; 11, pressure testing loop; 12, booster pump; 13, hose assembly to be tested; 14, off-load exhaust high-pressure stop valve; 15, piecing devices.
Below with reference to Figure of description and specific embodiment, the present invention is described in further details.
As depicted in figs. 1 and 2, in specific embodiments of the invention, the hose assembly pressure testing comprises transit joint 1, piston cylinder and the transition core 5 that is connected successively with quick-replaceable joint device, piston cylinder comprises cylinder body 2 and is positioned at the piston 3 of cylinder body 2, one end of transit joint 1 is connected with pressure testing loop 11, the other end is socketed in cylinder body 2 by screw-thread fit, namely is connected with an end of the cavity of the cylinder body 2 of piston cylinder, and the cavity of cylinder body 2 is connected with the center hole 101 of transit joint 1.One end of transition core 5 is socketed in the piston 3 of piston cylinder, the other end of transition core 5 is connected with the hose assembly joint, offer connecting pipeline 301 on piston 3, transition core 5 is provided with delivery hole 501, even be provided with between delivery hole 501 and connecting pipeline 301 when pressure higher than the pressure controlled valve 9 of setting value delivery hole 501 with connecting pipeline 301 conductings.In the present embodiment, further be provided with one-way valve 10 in connecting pipeline 301, one-way valve 10 and pressure controlled valve 9 are relation in parallel.
In the present embodiment, further be equiped with elastic reset spare 7 in the cylinder body 2 between piston 3 and transit joint 1, this elastic reset spare 7 adopts Returnning spring, and this Returnning spring can guarantee that piston 3 is in the right side when not working, be convenient for changing transition core 5.
Further, can design as required a series of transition cores 5, every kind of transition core 5 adapts to the hose assembly of different model specification, the assembly that so just can reduce because of test different model specification need to unscrew the replacing transit joint process time used, directly extract no transition core 5, insert the transition core 5 that needs use.Between transition core 5 and piston 3 for wedge surface coordinates, to improve the tightness that coordinates between the two.Particularly, in this specific embodiment, piston 3 ends offer coniform groove, and transition core 5 has coniform outer side surface accordingly, with piston 3 cone match.Replacedly, piston 3 and transition core 5 also can adopt wedge plane cooperation.
In the present embodiment, further be provided with seal ring 8 between the exterior edge face of transit joint 1 and cylinder body 2, sealing circle 8 adopts the soft copper sheet, realizes sealing by the soft copper sheet.
The present invention further comprises the hose clip connected components, and an end of hose clip connected components is connected in an end of close transition core 5 on cylinder body 2, and the other end of hose clip connected components is connected with the hose assembly joint.
In the present embodiment, the hose clip connected components comprises baffle plate head 4 and the baffle plate more than two 6, and baffle plate head 4 is socketed on an end of cylinder body 2, and baffle plate 6 is inserted on baffle plate head 4 and can moves along the radial direction of baffle plate head 4, thereby makes two baffle plates 6 close up or separate.Baffle plate 6 is used for blocking nut or other positions that can be used for fixing on the hose assembly joint, can block nut when the test pressurization, makes the joint of hose assembly and transition core 5 closely cooperate.Test pressure is larger, and the pressure that acts on nut is larger, and impacting force is just larger.On baffle plate 6 with dismantled and assembled stop screw, in case baffle plate 6 slippage by the chute from baffle plate head 4 in pulling open the hose assembly Female connector fittings process of packing into.
During use, baffle plate 6 is separated to both sides, in the middle of the hose assembly joint is put in, coordinate with transition core 5, and to cylinder body 2 the insides propelling certain distances; Then thereby baffle plate 6 closes up edge or other the suitable fixed positions of blocking the hose assembly Female connector fittings and gets final product.
As shown in Figure 3, the present invention further provides a kind of hose assembly pressure testing system, comprise pressure testing loop 11 and be installed in booster pump 12 and two piecing devices 15 on pressure testing loop 11, be used for connecting hose assembly to be tested 13 between two piecing devices 15, piecing devices 15 are above-mentioned quick-replaceable joint device.Two piecing devices 15 all are connected with booster pump 12.The flexible pipe two that needs pressure testing respectively therewith two piecing devices 15 of Quick-action pressure-testing system be connected, can carry out Quick-action pressure-testing in enormous quantities to hose assembly.Because these scheme hose assembly two end connectors all seal, be parallel with an off-load exhaust high-pressure stop valve 14 on pressure testing loop 11.
Working principle: when pressure testing liquid enters in cylinder body 2 by transit joint 1 from pressure testing machine, the one-way valve 10 on piston 3 is in closed condition, pressure controlled valve 9(sequence valve) also be closed condition when not reaching setting pressure.At this moment, form larger pressure in the rodless cavity of cylinder body 2, thereby pressure testing liquid pushing piston 3 moves right, piston 3 connects transition core 5, transition core 5 connecting hose assembly joints, the hose assembly joint is blocked and can not move towards the direction away from cylinder body 2 by baffle plate 6, thus the press seal under the pushed at high pressure of pressure testing liquid of the matching trim between piston 3 and transition core 5, thus reach the reliable sealing of piston 3 and hose assembly joint.Because delivery hole 501 is communicated with by pressure controlled valve 9 with connecting pipeline 301, when the pressure of pressure testing liquid in the rodless cavity of cylinder body 2 higher than pressure controlled valve 9(sequence valve) during setting pressure, pressure controlled valve 9 is opened, pressure testing liquid enters hose assembly, the beginning pressure testing.At this moment, the difference that the theoretical impacting force of the matching trim between piston 3 and hose assembly joint equals cylinder body 2 internal cross-sectional area and hose assembly joint sealing place cross-section area multiply by the pressure of pressure testing liquid, actual impacting force can to a certain degree reduce due to mechanical friction loss, so need suitably to strengthen the poor of cylinder body 3 internal cross-sectional area and hose assembly joint sealing place cross-section area, to obtain larger impacting force, guarantee sealing.When pressure testing finishes, the pressure of pressure testing machine is near barometric pressure, but the pressure in the space of piston 3 and transition core 5 and hose assembly is also original pressure, this moment is due to pressure difference, the one-way valve 10 at piston 3 places is opened, thereby make pressure reduce pressure release, namely complete smoothly pressure testing, open baffle plate 6 and can take out hose assembly.If need the hose assembly of test different size model, only need to extract transition core 5, replacing with suitable transition core 5 can carry out pressure testing again, very simple and convenient, and time saving and energy saving, can improve greatly work pressure test efficient.
The working procedure of hose assembly pressure testing system: booster pump 12 water supply starts, simultaneously off-load exhaust high-pressure stop valve 14 is opened, as mentioned above, pressure controlled valve 9(sequence valve) first be in closed condition, then when fluid pressure is elevated to predetermined value, pressure controlled valve 9(sequence valve) open, be full of liquid in whole pressure testing loop 11, thereby the gas in pressure testing loop 11 is discharged by off-load exhaust high-pressure stop valve 14; When off-load exhaust high-pressure stop valve 14 begins to discharge liquid, close off-load exhaust high-pressure stop valve 14; Then begin pressure testing; After pressure testing finishes, close booster pump 12, and open off-load exhaust high-pressure stop valve 14, because the pressure in pressure testing loop 11 is higher, so one-way valve 10 is opened, and liquid is by 14 discharges of off-load exhaust high-pressure stop valve.
Be appreciated that the hose clip connected components can not adopt plate washer 6, and adopt the mode of claw or chuck.
Be appreciated that, can not adopt the hose assembly pressure testing system of Fig. 3, and only use this quick-replaceable joint device, connect high pressure liquid output by transit joint 1, an end that is used for quick connecting hose assembly, the hose assembly the other end adopt general plug sealing, and come exhaust and pressure release by unscrewing plug, this scheme also can be to a certain extent raising pressure testing efficient, reduce labor intensity.
In the present invention, the impacting force of sealing surface provides by the pressure of pressure testing liquid, do not need to compress by threaded together, Quick labor-saving, and along with the increase of test pressure, the compression degree of sealing surface is also along with increase, do not worry not tightening because of screw thread the problem of revealing, improved the reliability of pressure testing.
The present invention uses quick-replaceable instant-plugging transition core 5 Connecting format, can design as required a cover transition core 5, every kind of transition core 5 adapts to the hose assembly of different model specification, the assembly that so just can reduce because of test different model specification need to unscrew the replacing transit joint process time used, directly extract no transition core 5, insertion needs the transition core 5 of use, and is convenient, fast, laborsaving.
By quick-replaceable joint device of the present invention, easy and simple to handle during pressure testing, can improve testing efficiency, reduce labor intensity.
Be only below the preferred embodiment of the present invention, protection scope of the present invention also not only is confined to above-described embodiment, and all technological schemes that belongs under thinking of the present invention all belong to protection scope of the present invention.Should be pointed out that for those skilled in the art, the some improvements and modifications not breaking away under principle of the invention prerequisite should be considered as protection scope of the present invention.