CN105372132A - Pressure withstanding test system and method for gas cylinder valve shell - Google Patents
Pressure withstanding test system and method for gas cylinder valve shell Download PDFInfo
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- CN105372132A CN105372132A CN201510725607.0A CN201510725607A CN105372132A CN 105372132 A CN105372132 A CN 105372132A CN 201510725607 A CN201510725607 A CN 201510725607A CN 105372132 A CN105372132 A CN 105372132A
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Abstract
The invention provides a pressure withstanding test system for a gas cylinder valve shell. The system comprises an oil drive pressure cylinder. The oil drive pressure cylinder comprises a cylinder body formed by sequentially connecting an oil cylinder barrel, an end cover assembly, a cylinder barrel connecting body, a base assembly and a pressure cylinder barrel. A piston formed by a stepped shaft is arranged in the cylinder body. The piston and the cylinder body are connected through a supporting assembly and a sealing assembly. An inner cavity of the cylinder body is sequentially divided into a left oil cavity, a right oil cavity, a leakage recovery cavity and a test medium cavity through the supporting assembly and the sealing assembly. The blind end of the pressure cylinder barrel is provided with a radial through hole, the radial through hole is communicated with the test medium cavity, and a medium inflow valve and a medium outflow valve are arranged on an outward outlet of the radial through hole. An opening B of a three-position four-way reversing valve is communicated with the left oil cavity, an opening A of the three-position four-way reversing valve is communicated with the right oil cavity, an opening P of the three-position four-way reversing valve is communicated with an oil tank through an oil pump motor set, and an opening T of the three-position four-way reversing valve is communicated with the oil tank. The medium inflow valve is communicated with a test medium source through a ball valve, the medium outflow valve is communicated with a valve tool, and the output end of the medium outflow valve is communicated with a medium pool through a gas control valve.
Description
Technical field
The present invention relates to a kind of pressure test of small containers, especially a kind of Shell test of small-sized stainless valve, particularly a kind of gas cylinder valve housing withstand voltage test system and method.
Background technology
Along with the widespread use of stainless steel material, more and more important or crucial small containers and valvelet all select stainless steel to do material, to improve its corrosion resistance, extend its serviceable life.When testing stainless valve, have clear and definite regulation to their test(ing) medium, the water chloride amount used should be no more than 100mg/L, can not to do experiment medium with oil.
The Shell test of stainless valve is one of main test item of valve pressure test.On conventional art, the hydraulic pressure system of the Shell test of large size valve is made up of the low-pressure pump of large discharge and the high-pressure hydraulic pump of low discharge and pipeline and operation valve.When detecting valve, first in valve body, fill test(ing) medium with the low-pressure pump of large discharge, then in valve cavity, inject water under high pressure with high pressure gas drive booster water pump, when test(ing) medium pressure reaches and presets pressure, high pressure gas drive booster water pump stops automatically.But because the compressibility of gas is comparatively large, the responsiveness of cylinder is subject to the impact of load.When low-speed motion, because friction force accounts for the large percentage of thrust, the low-speed stability of cylinder is not as hydraulic cylinder, and its power output is also little than hydraulic cylinder.For small container, require speed slowly and power output is large, employing hydrostatic transmission preferably, makes compact conformation, inertia little, impacts little, is easy to realize overload protection.Another Hydraulic Elements can lubricating by oneself, and serviceable life is longer.
Summary of the invention
Technical matters to be solved by this invention is the pressure test for small containers, especially for the Shell test of small-sized stainless valve provides a kind of gas cylinder valve housing withstand voltage test system and method, it adopts hydrostatic transmission, and compact conformation, inertia are little, impact little, can lubricating by oneself, serviceable life is longer, meets testing requirements completely.
For solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of gas cylinder valve housing withstand voltage test system, it comprises oil and drives pressurized cylinder, fuel tank, Oil pump electrical machinery group, three position four-way directional control valve, ball valve, Pneumatic valve, medium pool and valve frock, described oil drives pressurized cylinder and comprises by cylinder tube and end-cap assembly, the cylinder body of the inner hollow that cylinder barrel connector and base assembly and supercharging cylinder barrel are in turn connected to form, this inner chamber of cylinder block arranges the piston that ladder oblique crank Z is made, be connected through supporting component and seal assembly between this piston with cylinder body, and this inner chamber of cylinder block is divided into left oil pocket successively by supporting component and seal assembly, right oil pocket, seepage recycling cavity, test(ing) medium chamber is totally 4 chambers, the cecum of this supercharging cylinder barrel is provided with a radial direction through hole, this radial direction through hole communicates with this test(ing) medium chamber, and this radial direction through hole be symmetrically installed with into dielectric valve and go out dielectric valve towards outer outlets place, the B mouth of left oil pocket and three position four-way directional control valve that oil drives pressurized cylinder is communicated with, and right oil pocket is communicated with the A mouth of three position four-way directional control valve, and described fuel tank is communicated with the P mouth of three position four-way directional control valve through Oil pump electrical machinery group, and the T mouth of three position four-way directional control valve is communicated with fuel tank, described enter dielectric valve through ball valve connection test medium source, described in go out dielectric valve and be communicated with valve frock, and described in go out dielectric valve output terminal be communicated with medium pool through Pneumatic valve.
According to embodiments of the invention, further optimization can also be done to the present invention, below for optimizing the rear technical scheme formed:
Preferably, described cylinder barrel connector and base assembly are welded by cylinder barrel connector and base, and interval one distance is provided with left travel switch, right travel switch on this base, the stage casing of described piston is provided with the induction rod perpendicular to piston axis, this induction rod stretches out outside described cylinder body, and described piston driving induction rod moves, together when moving to left and right travel switch, induction rod and left and right travel switch are responded to and are sent signal, move between left and right travel switch with control piston.
Preferably, described base is provided with proximity switch bearing, and this proximity switch bearing is provided with kidney-shaped mounting hole, installs described left travel switch, right travel switch in this kidney-shaped mounting hole.The position of two travel switches can regulate as required in this kidney-shaped mounting hole.
Preferably, described cylinder tube and end-cap assembly are welded by cylinder tube and end cap, and the large end both ends of the surface of described piston are equipped with groove, and the inner face of end cap and the inner face of cylinder barrel connector are also provided with annular groove respectively.
Preferably, in the middle of described cylinder barrel connector, cylindrical has the inner chamber of mounting hole radial communication cylinder barrel connector, described induction rod stretches out described cylinder body from this mounting hole, with mounting hole be 90 ° of directions described cylinder barrel connector on have the through hole on a small sircle hole and described base to pass to mutually as leakage of oil Water Sproading mouth.
Preferably, being above provided with radial screw bore and communicating as right chamber hydraulic fluid port with the axial aperture on the left side of this cylinder barrel connector of described cylinder barrel connector.
Preferably, described cylinder barrel connector left end is connected with cylinder tube, and right-hand member is connected with gland, and gland connect put in place after, lock with set nut.
Preferably, the openend of described supercharging cylinder barrel installing guiding swivel nut, and in the inner groove of guiding swivel nut installing piston with after little guide ring, with the inwall of supercharging cylinder barrel through being threaded.
Preferably, described Oil pump electrical machinery group is communicated with the P mouth of three position four-way directional control valve through retaining valve, and the output terminal of this retaining valve connects the T mouth of three position four-way directional control valve through two-position four way change valve.
Based on same inventive concept, present invention also offers and a kind ofly utilize above-mentioned gas cylinder valve housing withstand voltage test system to carry out the method for valve housing withstand voltage test, it comprises the steps:
A) valve is contained in valve frock, closes Pneumatic valve, open ball valve, test(ing) medium arrives test(ing) medium chamber through entering dielectric valve, after being full of test(ing) medium chamber, is contained in the valve to be checked in valve frock through going out dielectric valve arrival;
B) when test(ing) medium chamber and valve cavity to be checked are full of medium, open Oil pump electrical machinery group, after initialization system oil pressure, the pressure oil that Oil pump electrical machinery group is come enters oil through three position four-way directional control valve and drives the left oil pocket of pressurized cylinder, right oil pocket oil return, promotion piston moves right, and drive induction rod right lateral, to the supercharging of test(ing) medium chamber, when reaching right travel switch, in valve to be checked, test(ing) medium reaches test pressure, and Oil pump electrical machinery group works on, the pressure maintained in test(ing) medium chamber is constant, and valve to be checked carries out pressurize;
C) after pressurize reaches the stipulated time, three position four-way directional control valve commutates, and the pressure oil that Oil pump electrical machinery group is come enters oil and drives the right oil pocket of pressurized cylinder, left oil pocket oil return, promotes piston to left movement, drives induction rod to left movement, reduce pressure in test(ing) medium chamber, when close to left travel switch, in valve to be checked, test pressure release, turns off Oil pump electrical machinery group, piston ceases movement, Pneumatic valve is opened, and test pipeline lays down test(ing) medium, completes test.
Above structure, the present invention by the different inlet pressure of the left oil pocket of setting, then according to the pressure ratio of plunger designs, utilizes the rectilinear motion of hydraulic drive piston, thus provides different test(ing) medium pressure.
The beneficial effect that the technology of the present invention produces is:
1, be the pressure test of small containers, especially for the Shell test of small-sized stainless valve provides a kind of pressure pilot system and control method.
2, the present invention is designed to independent loop hydraulic system and test pipeline, can realize the different choice to system media and test(ing) medium, to meet particular/special requirement.
3, the present invention adopts hydraulic oil to drive supercharging, and commutation is steady, inertia is little, it is little to impact, and is easy to realize overload protection.Another Hydraulic Elements can lubricating by oneself, and serviceable life is longer.
4, compact conformation of the present invention, inertia are little, impact little, meet valve housing testing requirements completely, easily be automated.
Accompanying drawing explanation
Fig. 1 is gas cylinder valve housing withstand voltage test systematic schematic diagram of the present invention;
Fig. 2 is the structure that the present invention's oil drives pressurized cylinder;
Fig. 3 is the vertical view of Fig. 2;
Fig. 4 is the A-A cut-open view of Fig. 2
Fig. 5 is the structural representation of cylinder tube of the present invention and end-cap assembly;
Fig. 6 is the structural representation of movable bearing support assembly of the present invention;
Fig. 7 is the structural representation of cylinder barrel connector of the present invention and base assembly;
Fig. 8 is cylinder barrel connector vertical view in Fig. 7;
Fig. 9 is the structural representation of supercharging cylinder barrel of the present invention.
Embodiment
1) gas cylinder valve housing withstand voltage test system composition of the present invention is introduced:
With reference to figure 1, whole gas cylinder valve housing withstand voltage test system primarily of fuel tank 1., oil absorption filter 2., Oil pump electrical machinery group 3., retaining valve 4., system surplus valve Y1 5., system pressure table P1 6., system pressure sensor 7., three position four-way directional control valve 8., working pressure surplus valve Y2 9., two-position four way change valve 10., oil drive pressurized cylinder, water inflow filter, ball valve, graded filter, Pneumatic valve, medium pool, test pressure sensor, belt switch test precision pressure gauge, test gauge and valve frock composition.Wherein 8. three position four-way directional control valve is three-position four-way electromagnetic directional valve, and it comprises control coil DT1, DT2; 10. two-position four way change valve is two-position four-way solenoid directional control valve, and it comprises control coil DT3.
Shown in figure 2-Fig. 9, oil drives pressurized cylinder primarily of cylinder tube and end-cap assembly 1, movable bearing support assembly 2, cylinder barrel connector and base assembly 3, enter dielectric valve 4, go out dielectric valve 5, free flow coupling 6, piston 7, door 8, O shape circle back-up ring 9, guiding swivel nut 10, set nut 11, gland 12, supercharging cylinder barrel 13, proximity switch bearing 14, induction rod 15, holding screw 16, packing ring 17, the large squared circle 18 in hole, the large guide ring 19 of piston, hole back-up ring 20, the large Y-shaped ring 21 of axle, piston rod guide ring 22, little O-ring seals 23, large O-ring seals 24, the little guide ring 25 of piston, the little Y-shaped ring 26 of axle, the little squared circle 27 in hole, O-ring seals 28, screw 29, plain washer 30, left travel switch 31, right travel switch 31 ' forms.
With reference to figure 5, cylinder tube and end-cap assembly 1 are welded by cylinder tube 33 and end cap 32.
With reference to figure 6, movable bearing support assembly 2 is welded by expansion bearing ring 35 and expansion bearing base 34.
With reference to figure 7, cylinder barrel connector and base assembly 3 are welded by cylinder barrel connector 36 and base 37.
With reference to figure 2, Fig. 5, end cap 32 centre has screw, and free flow coupling 6 is housed, and the endoporus of free flow coupling 6 is the hydraulic fluid port of left oil pocket a, and uniform 4 apertures of end face are fitting hole.Left end and the end cap 32 of cylinder tube 33 weld together, and right-hand member internal thread and cylinder barrel connector 36 are together by a threaded connection.Internal piston 7 is ladder oblique crank Z, and large end both ends of the surface are all fluted, and large end cylindrical is equipped with the large squared circle 18 in hole, the large guide ring 19 of piston, when piston 7 seals during linear reciprocating motion in oil pocket between the oil pocket of left and right.The middle-end of piston 7 has a radial screw bore to be provided with induction rod 15, piston 7 Sports band moves induction rod 15 and moves together, when moving to diverse location, respond to the left travel switch 31 on the proximity switch bearing 14 be arranged on base 37, right travel switch 31 ' respectively and send signal, with control piston 7 to-and-fro movement within the scope of this.This proximity switch bearing 14 is designed to kidney-shaped mounting hole, thus the position of adjustable left travel switch 31, right travel switch 31 ', make to be parked in during piston 7 bilateral reciprocation position or accurately commutate accurately, effectively prevent piston 7 and cylinder barrel from colliding, improve security and the serviceable life of cylinder.
With reference to Fig. 2, Fig. 3, Fig. 7, cylinder barrel connector and base assembly 3 are welded by cylinder barrel connector 36 and base 37.Cylinder barrel connector 36 is hollow ladder oblique crank Z, and there is external thread at two ends, middle cylindrical has the inner chamber of mounting hole 361 radial communication cylinder barrel connector 36, and induction rod 15 passes this cylinder barrel connector 36 through this mounting hole 361.A small sircle hole 362 is had to pass to mutually as leakage of oil Water Sproading mouth C with the through hole 371 on base 37 with mounting hole 361 in 90 ° of directions.Have a radial screw bore 364 to communicate with axial aperture 365 on the left side of this cylinder barrel connector 36 above this cylinder barrel connector 36, this threaded hole 364 fills free flow coupling 6, and the endoporus of this free flow coupling 6 is right oil pocket hydraulic fluid port.Be equipped with successively from left to right in the left end interior grooves of cylinder barrel connector 36: the large Y-shaped ring 21 of hole back-up ring 20, door 8, axle, piston rod guide ring 22, little O-ring seals 23 and O shape circle back-up ring 9, they are contained between cylinder barrel connector 36 and piston 7 and seal, and prevent the pressure oil of right oil pocket b from leaking.Cylinder barrel connector 36 is equipped with large O-ring seals 24 with the outer round recessed of cylinder tube 33 junction, seals between cylinder tube 33 and cylinder barrel connector 36.Cylinder barrel connector 36 left end external thread is connected with cylinder tube 33, and the external thread of right-hand member is connected with gland 12, connects after putting in place, locks with set nut 11.
As shown in Fig. 2, Fig. 9, supercharging cylinder barrel 13 is U-shaped multidiameter, openend ring groove is built with the axle little squared circle 27 of little Y-shaped ring 26 and hole, and guiding swivel nut 10 inner groove installing piston, with after little guide ring 25, is connected with the openend inwall of supercharging cylinder barrel 13 by screw thread.The cecum cylindrical of supercharging cylinder barrel 13 there is a radial direction through hole 131 communicate with the test(ing) medium chamber d of this supercharging cylinder barrel 13, this radial direction through hole 131 exit is symmetrically installed with into dielectric valve 4 through screw thread and goes out dielectric valve 5, and O-ring seals 28 is at radial direction through hole 131 and enter dielectric valve 4 or go out between dielectric valve 5 to seal.An aperture 132 is had to communicate between radial direction through hole 131 and the test(ing) medium chamber d of supercharging cylinder barrel 13.
Enter dielectric valve 4 and go out dielectric valve 5 and form by valve seat, stainless steel ball, Compress Spring, guide holder and back-up ring.Entering dielectric valve 4 and going out dielectric valve 5 is existing structure, does not thus do too much to introduce at this.
From Fig. 2, Fig. 3, oil of the present invention drives pressurized cylinder left oil pocket a, right oil pocket b, seepage recycling cavity c, test(ing) medium chamber d totally 4 chambeies.
As shown in Figure 1, fuel tank 1. through oil absorption filter 2., Oil pump electrical machinery group 3., 4. retaining valve be communicated with three position four-way directional control valve oil inlet P 8., the left oil pocket a that oil drives pressurized cylinder is connected to three position four-way directional control valve B mouth 8. by pipeline, right oil pocket b is connected to three position four-way directional control valve A mouth 8. by pipeline, what oil drove pressurized cylinder enters dielectric valve 4 through water inflow filter, ball valve connection test medium source, the dielectric valve 5 that goes out that oil drives pressurized cylinder is communicated with valve frock, and this output terminal going out dielectric valve 5 is communicated with medium pool through graded filter, Pneumatic valve.Test pressure sensor, belt switch test precision pressure gauge, test gauge are installed on out the output terminal of dielectric valve 5, automatically control and monitoring for realizing.10. retaining valve output terminal 4. connects three position four-way directional control valve T mouth 8. through two-position four way change valve.This retaining valve output terminal 4. and system surplus valve Y1 5. and working pressure surplus valve Y2 inlet end be 9. connected.And this retaining valve output terminal 4. arrange system pressure table P1 6., system pressure sensor 7..
2) working condition of the present invention is introduced:
During test, gas cylinder valve housing is contained in valve frock, close Pneumatic valve, open ball valve, low pressure test (LPT) medium (water) enters into dielectric valve 4 from medium entrance D, under pressure medium effect, promote the effect that stainless steel ball in dielectric valve overcomes spring force and open valve, medium arrives test(ing) medium chamber d, after being full of test(ing) medium chamber d, flow into out dielectric valve 5, promote out the effect that stainless steel ball in dielectric valve overcomes spring force, medium arrives in valve cavity to be checked through media outlet E, and valve cavity to be checked is full of medium.
When oil drives the test(ing) medium chamber d of pressurized cylinder and valve cavity to be checked is full of medium, starting characteristics test program, open Oil pump electrical machinery group 3., two-position four way change valve coil DT3 is 10. energized, 10. two-position four way change valve commutates, and disconnects through two-position four way change valve return line 10..Meanwhile, fuel tank 1. in hydraulic oil 2. enter Oil pump electrical machinery group 3. through filter, to retaining valve 4., then to system surplus valve Y1 5., manual adjustment system surplus valve Y1 5. initialization system pressure.Now, system pressure table P1 6. display system oil pressure, system pressure sensor is acquisition system oil pressure 7..Be energized when 10. two-position four way change valve is tested, disconnect this section of return line, power-off when stopping testing, connects pipeline, in order to avoid during Oil pump electrical machinery group error starting, piston can remain static, protection system.
Now, be energized by three position four-way directional control valve coil DT2 8., 8. three position four-way directional control valve commutates, and closing coil DT2 holds oil circuit.8. the pressure oil that oil pump comes enter oil through three position four-way directional control valve and drive the left oil pocket a of pressurized cylinder, right oil pocket b oil return, promotes piston 7 and move right, drive induction rod 15 right lateral.Meanwhile, manual adjustment system working pressure surplus valve Y2 9. initialization system working pressure.The pressure change of observation band switch precision pressure gauge and test gauge, belt switch precision pressure gauge only uses as during verification pressure, closing switch time normal.When close to right travel switch 31 ', test gauge reaches the required pressure of test.When reaching right travel switch 31 ', piston 7 stops moving right, and valve to be checked carries out pressurize.After pressurize to stipulated time, 8. three position four-way directional control valve commutates, and three position four-way directional control valve coil DT1 is 8. energized, coil DT2 power-off, the pressure oil that oil pump comes enters oil and drives the right oil pocket b of pressurized cylinder, left oil pocket a oil return, promote piston 7 to left movement, drive induction rod 15 to left movement.When close to left travel switch 31, piston 7 stops to left movement, and valve to be checked carries out release of pressure.
In process of the test, coil DT3 is in "on" position all the time, and when coil DT2 is energized, coil DT1 power-off, oil drives pressurized cylinder left oil pocket a oil-feed, and right oil pocket b oil return, test(ing) medium chamber is in pressurized state.When test pressure P2 is raised to pressure needed for test, start pressurize, timing.After pressurize to stipulated time, coil DT1 is energized, DT2 power-off, and piston left lateral is return, system decompression, piston ceases movement.Opened by Pneumatic valve, the release of test pipeline, turn off Oil pump electrical machinery group 3., DT3 power-off, completes test.
Claims (10)
1. a gas cylinder valve housing withstand voltage test system, is characterized in that comprising oil drives pressurized cylinder, fuel tank (1.), Oil pump electrical machinery group (3.), three position four-way directional control valve (8.), ball valve, Pneumatic valve, medium pool and valve frock, described oil drives pressurized cylinder and comprises by cylinder tube and end-cap assembly (1), the cylinder body of the inner hollow that cylinder barrel connector and base assembly (3) and supercharging cylinder barrel (13) are in turn connected to form, this inner chamber of cylinder block arranges the piston (7) that ladder oblique crank Z is made, be connected through supporting component and seal assembly between this piston with cylinder body, and this inner chamber of cylinder block is divided into left oil pocket (a) successively by supporting component and seal assembly, right oil pocket (b), seepage recycling cavity (c), test(ing) medium chamber (d) is totally 4 chambers, the cecum of this supercharging cylinder barrel is provided with a radial direction through hole (131), this radial direction through hole communicates with this test(ing) medium chamber, and being symmetrically installed with towards outer outlets place into dielectric valve (4) and going out dielectric valve (5) of this radial direction through hole, the B mouth of left oil pocket (a) and three position four-way directional control valve that oil drives pressurized cylinder is communicated with, and right oil pocket (b) is communicated with the A mouth of three position four-way directional control valve, and described fuel tank is communicated with the P mouth of three position four-way directional control valve through Oil pump electrical machinery group, and the T mouth of three position four-way directional control valve is communicated with fuel tank, described enter dielectric valve through ball valve connection test medium source, described in go out dielectric valve and be communicated with valve frock, and described in go out dielectric valve output terminal be communicated with medium pool through Pneumatic valve.
2. a kind of gas cylinder valve housing withstand voltage test system according to claim 1, it is characterized in that, described cylinder barrel connector and base assembly (3) are welded by cylinder barrel connector (36) and base (37), and interval one distance is provided with left travel switch (31) on this base, right travel switch (31 '), the stage casing of described piston (7) is provided with the induction rod (15) perpendicular to piston axis, this induction rod stretches out outside described cylinder body, and described piston driving induction rod moves together, when moving to a left side, during right travel switch, induction rod is with left, right lateral journey inductive switching sends signal, with control piston on a left side, move between right travel switch.
3. a kind of gas cylinder valve housing withstand voltage test system according to claim 2, it is characterized in that, described base is provided with proximity switch bearing (14), and this proximity switch bearing is provided with kidney-shaped mounting hole, in this kidney-shaped mounting hole, described left travel switch (31), right travel switch (31 ') are installed.
4. a kind of gas cylinder valve housing withstand voltage test system according to claim 1, it is characterized in that, described cylinder tube and end-cap assembly (1) are welded by cylinder tube (33) and end cap (32), and the large end both ends of the surface of described piston (7) are equipped with groove, the inner face of end cap and the inner face of cylinder barrel connector are also provided with annular groove respectively.
5. a kind of gas cylinder valve housing withstand voltage test system according to claim 3, it is characterized in that, in the middle of described cylinder barrel connector (36), cylindrical has the inner chamber of mounting hole (361) radial communication cylinder barrel connector, described induction rod stretches out described cylinder body from this mounting hole, with mounting hole be 90 ° of directions described cylinder barrel connector on have the through hole (371) on a small sircle hole (362) and described base to pass to mutually as leakage of oil Water Sproading mouth (C).
6. a kind of gas cylinder valve housing withstand voltage test system according to claim 3, it is characterized in that, be provided with radial screw bore (364) above described cylinder barrel connector and communicate as right chamber hydraulic fluid port (B) with the axial aperture (365) on the left side of this cylinder barrel connector.
7. a kind of gas cylinder valve housing withstand voltage test system according to claim 4, it is characterized in that, described cylinder barrel connector left end is connected with cylinder tube (33), and right-hand member is connected with gland (12), and gland connect put in place after, lock with set nut.
8. a kind of gas cylinder valve housing withstand voltage test system according to claim 1, it is characterized in that, openend installing guiding swivel nut (10) of described supercharging cylinder barrel, and in the inner groove of guiding swivel nut installing piston with after little guide ring (25), with the inwall of supercharging cylinder barrel through being threaded.
9. a kind of gas cylinder valve housing withstand voltage test system according to claim 1, it is characterized in that, described Oil pump electrical machinery group is communicated with the P mouth of three position four-way directional control valve through retaining valve, and the output terminal of this retaining valve connects the T mouth of three position four-way directional control valve through two-position four way change valve.
10. utilize gas cylinder valve housing withstand voltage test system described in any one of claim 1-9 to carry out a method for valve housing withstand voltage test, it is characterized in that, comprise the steps:
A) valve is contained in valve frock, opens ball valve, close Pneumatic valve, test(ing) medium arrives test(ing) medium chamber (d) through entering dielectric valve, after being full of test(ing) medium chamber, is contained in the valve to be checked in valve frock through going out dielectric valve arrival;
B) when test(ing) medium chamber and valve cavity to be checked are full of medium, open Oil pump electrical machinery group, after initialization system oil pressure, the pressure oil that Oil pump electrical machinery group is come enters oil through three position four-way directional control valve and drives the left oil pocket (a) of pressurized cylinder, right oil pocket (b) oil return, promotion piston moves right, and drive induction rod right lateral, to the supercharging of test(ing) medium chamber, when reaching right travel switch, in valve to be checked, test(ing) medium reaches test pressure, and Oil pump electrical machinery group works on, the pressure maintained in test(ing) medium chamber is constant, and valve to be checked carries out pressurize;
C) after pressurize reaches the stipulated time, three position four-way directional control valve commutates, and the pressure oil that Oil pump electrical machinery group is come enters oil and drives the right oil pocket (b) of pressurized cylinder, left oil pocket (a) oil return, promotes piston to left movement, drives induction rod to left movement, reduce pressure in test(ing) medium chamber, when close to left travel switch, in valve to be checked, test pressure release, turns off Oil pump electrical machinery group, piston ceases movement, Pneumatic valve is opened, and test pipeline lays down test(ing) medium, completes test.
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| CN201510725607.0A CN105372132B (en) | 2015-10-30 | 2015-10-30 | A kind of gas cylinder valve housing pressure test system and method |
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| CN201510725607.0A CN105372132B (en) | 2015-10-30 | 2015-10-30 | A kind of gas cylinder valve housing pressure test system and method |
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| CN105372132B CN105372132B (en) | 2018-04-10 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107063874A (en) * | 2016-12-15 | 2017-08-18 | 哈尔滨飞机工业集团有限责任公司 | A kind of reservoir pressure fatigue test system |
| CN109655299A (en) * | 2019-01-16 | 2019-04-19 | 中铁第四勘察设计院集团有限公司 | A kind of gas source generating means and the pressure decay test system comprising it |
| CN112483511A (en) * | 2020-12-08 | 2021-03-12 | 四川凌峰航空液压机械有限公司 | Variable pressure ratio hydraulic pressure boost test system |
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| CN205091206U (en) * | 2015-10-30 | 2016-03-16 | 江南工业集团有限公司 | Gas cylinder valve casing withstand voltage test system |
Cited By (4)
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| CN107063874A (en) * | 2016-12-15 | 2017-08-18 | 哈尔滨飞机工业集团有限责任公司 | A kind of reservoir pressure fatigue test system |
| CN109655299A (en) * | 2019-01-16 | 2019-04-19 | 中铁第四勘察设计院集团有限公司 | A kind of gas source generating means and the pressure decay test system comprising it |
| CN109655299B (en) * | 2019-01-16 | 2023-10-27 | 中铁第四勘察设计院集团有限公司 | Air source generating device and wind pressure test system comprising same |
| CN112483511A (en) * | 2020-12-08 | 2021-03-12 | 四川凌峰航空液压机械有限公司 | Variable pressure ratio hydraulic pressure boost test system |
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| CN105372132B (en) | 2018-04-10 |
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