CN105334039A - Intelligent integrated testing device and method of low-temperature insulated gas cylinder valve - Google Patents
Intelligent integrated testing device and method of low-temperature insulated gas cylinder valve Download PDFInfo
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- CN105334039A CN105334039A CN201510842987.6A CN201510842987A CN105334039A CN 105334039 A CN105334039 A CN 105334039A CN 201510842987 A CN201510842987 A CN 201510842987A CN 105334039 A CN105334039 A CN 105334039A
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Abstract
The invention discloses an intelligent integrated testing device and method of a low-temperature insulated gas cylinder valve. The intelligent integrated testing device comprises an industrial control computer (1), wherein the industrial control computer is connected with a PLC control system (2) through an RS232 serial communication interface, the input end of the PLC control system is connected with automatic/manual switching button and limit switch signals of a stop valve service life test unit (3), a shell pressure-resisting test unit (4) and a valve action performance test unit (5), the output end of the PLC control system is connected with control solenoid valve coils of the stop valve service life test unit, the shell pressure-resisting test unit and the valve action performance test unit through a contactless relay (6), and pressure sensor signals of the stop valve service life test unit, the shell pressure-resisting test unit and the valve action performance test unit are connected with the PLC control system through an A/D module (7). The intelligent integrated testing device integrates various testing devices of the valve and achieves automatic testing control through the industrial control computer and the PLC control system.
Description
Technical field
The present invention relates to a kind of cryogenic insulated cylinder valve intelligent integrated proving installation and method, be specially adapted to the test of automobile liquefied natural gas bottle valve.
Background technology
To the attention of the liquefied natural gas (LNG) energy, liquefied natural gas (LNG) (LNG) is applied more and more extensive in energy field, and liquefied natural gas (LNG) (LNG) gas cylinder has become the important container of storage and conveying liquified natural gas.Valve is as one of the kernel component attention of liquefied natural gas bottle, and be by-pass valve control quality better, the test of valve seems most important.
The valve testing device that conventional art uses is all that a valve test event joins a test board, and proving installation is many, more scattered, and occupation of land space is large.Reading adopts artificial reading mostly, and personal error is large, and can not monitor the situation of change of valve in test process in detail, provides information accurately, inconvenient operation can not to the development of valve or the judgement of quality good or not, waste time and energy.
The intelligent integrated proving installation that prior art uses, the monitoring software of proving installation have employed animation form, simple and clear, beautiful interface, and operating personnel can easily grasp, convenient operation.The trystate of intelligent instrument test can be shown in real time dynamically, be convenient to valve and carry out localization of fault and judgement in test process, for tester provides test data accurately, decrease artificial reading error, reduce manpower and time cost.And test findings can preserve form with EXCEL form, can print, access is convenient, and trackability is good.The multinomial test event of multiple valve is integrated on a proving installation, has saved equipment cost.
Summary of the invention
Object of the present invention is: provide a kind of cryogenic insulated cylinder valve intelligent integrated proving installation and method, and especially the test of liquefied natural gas bottle valve provides a kind of intelligent integrated proving installation and method.
For reaching above-mentioned purpose, the technical solution adopted in the present invention is: a kind of cryogenic insulated cylinder valve intelligent integrated proving installation, it comprises industrial computer, this industrial computer connects PLC control system through RS232 serial communication interface, the input end of this PLC control system connects stop valve durability test unit, housing withstand voltage test unit, the automatic/hand switching push button of valve event performance test unit and limit switch signal, the output terminal of this PLC control system connects stop valve durability test unit through contactless relay, housing withstand voltage test unit, the Controlling solenoid valve coil of valve event performance test unit, this stop valve durability test unit, housing withstand voltage test unit, the pressure sensor signal of valve event performance test unit is through A/D model calling PLC control system.
Described stop valve durability test unit comprises stop valve headstock gear, durability test solenoid directional control valve, durability test retaining valve, durability test oil pump; This stop valve headstock gear comprises cylinder body, is contained in cylinder body along the double-head piston that the length direction of cylinder body moves back and forth; Piston-rack is formed by being with the connecting link of tooth bar to link together between two pistons of this double-head piston; The gear shaft with piston-rack engaged transmission is equipped with in the side of piston-rack, the length direction being axially perpendicular to cylinder body of this gear shaft; One end of gear shaft is stretched out through cylinder body, and connects multiple multiple pusher dogs for stirring stop valve handwheel; The tubing sub of cylinder body two ends is communicated with two liquid outlets of durability test solenoid directional control valve respectively by pipeline, and the hydraulic oil in fuel tank delivers to the inlet of durability test solenoid directional control valve through durability test oil pump, durability test retaining valve.Described durability test oil delivery side of pump is also connected to durability test surplus valve, durability test tensimeter, durability test pressure transducer, and two liquid outlets of durability test solenoid directional control valve respectively connection lifetime test positive surplus valve, the anti-surplus valve of durability test.
Described housing withstand voltage test unit comprises oil and drives pressurized cylinder, withstand voltage test oil pump, three position four-way directional control valve, ball valve, unloads hydraulic electromagnetic valve, medium pool and valve frock; This oil drives the cylinder body that pressurized cylinder comprises inner hollow, the piston that ladder oblique crank Z is made is set in this cylinder body, 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, right oil pocket, seepage recycling cavity, test(ing) medium chamber totally 4 chambers successively by supporting component and seal assembly, the cecum of this cylinder body be provided with communicate with test(ing) medium chamber enter dielectric valve and go out dielectric valve; The B mouth of left oil pocket and three position four-way directional control valve that this 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 the hydraulic oil of fuel tank is communicated with the P mouth of three position four-way directional control valve through withstand voltage test oil pump, and the T mouth of three position four-way directional control valve is communicated with fuel tank; This enters dielectric valve and is communicated with medium pool through ball valve, goes out dielectric valve and is communicated with valve frock, and the output terminal going out dielectric valve is communicated with medium pool through unloading hydraulic electromagnetic valve; Cylinder body outside spacers one distance that this oil drives pressurized cylinder is provided with left travel switch, right travel switch, the stage casing of piston is provided with the induction rod perpendicular to piston axis, this induction rod stretches out outside cylinder body, and 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.Described withstand voltage test oil delivery side of pump is also connected to the first withstand voltage test surplus valve, withstand voltage test system pressure table, withstand voltage test system pressure sensor, the second withstand voltage test surplus valve, and this output terminal going out dielectric valve installs pneumatic test pressure sensor, withstand voltage test precision pressure gauge, pneumatic test pressure table.Described withstand voltage test oil delivery side of pump connects the T mouth of three position four-way directional control valve through protection solenoid valve.
Described valve event performance test unit comprises a source of the gas, this source of the gas is through source of the gas reduction valve connection test pipeline and pneumatic pipeline, this test pipeline comprises through pilot piping reduction valve and the entrance open electromagnetic valve connect, entrance unload solenoid valve, solenoid valve is unloaded in outlet, and this pneumatic pipeline comprises that the entrance be linked in sequence opens Pneumatic valve, entrance unloads Pneumatic valve; This entrance opens the gas output end of the control end connection entrance open electromagnetic valve of Pneumatic valve, and the control end that entrance unloads Pneumatic valve connects the gas output end that entrance unloads solenoid valve; The inlet end of tested valve is connected to that entrance opens Pneumatic valve, entrance unloads between Pneumatic valve, and the outlet side connection outlet of tested valve unloads Pneumatic valve, and the control end connection outlet that Pneumatic valve is unloaded in this outlet unloads the gas output end of solenoid directional control valve.Inlet, outlet end inlet porting pressure transducer, the outlet pressure sensor respectively of described tested valve.
Like this, the present invention's whole control system hardware forms the distributed two-step evolution mode of upper and lower machine by industrial computer and PLC control system, and control procedure and data acquisition have been worked in coordination with by RS-232 serial communication interface by upper and lower machine.In industrial computer (host computer), monitoring software is installed, for arranging test parameters, carry out real time data monitoring, the functions such as dynamic process test figure and test report output, in addition, can need according to project the reading change taking into account in test counter with tensimeter in the real-time display device of animation form, temperature, generate trial curve, automatic record analysis data, draw test findings, and test findings are carried out preserving and printing.PLC control system (slave computer) automatically completes process of the test after receiving the beginning test command of monitoring software, and carries out test routine design by monitoring software.
The concrete test procedure of described stop valve durability test unit is: first by industrial computer selective cut-off valve durability test unit, rotated forward and reversing time by industrial computer setting durability test number of times and stop valve, and Start-up life test operation of oil pump, regulate durability test surplus valve initialization system pressure, required pressure when regulating durability test positive surplus valve setting stop valve to rotate forward, required pressure during adjustment durability test anti-surplus valve setting stop valve reversion; Then, select automatic operation mode, hydraulic oil in fuel tank is transported to durability test solenoid directional control valve by Start-up life test oil pump, the left chamber oil-feed of stop valve headstock gear, promote piston-rack and do rectilinear motion to the right, piston-rack driven gear axle rotates forward, thus the handwheel driving pusher dog to stir stop valve rotates forward, along with oil increasing, pressure increase, when reaching the set pressure of the positive surplus valve of durability test, release opened by the positive surplus valve of durability test, meanwhile, the moment of torsion acted on stop valve handwheel reaches valve closing torque value, closes shutoff valve; After the time delay stop valve rotating forward time, make the right chamber oil-feed of stop valve headstock gear, the oil return of left chamber, promote piston-rack and do rectilinear motion left, piston-rack driven gear axle reverses, thus drive pusher dog to stir the reversion of stop valve handwheel, when reaching the set pressure of the anti-surplus valve of durability test, release opened by the anti-surplus valve of durability test, simultaneously, act on moment of torsion on stop valve handwheel and reach valve opening torque value, open valve; After time delay stop valve reversing time, start new circulation, when namely the test number (TN) reaching setting stops the work of stop valve durability test unit automatically;
The concrete test procedure of described housing withstand voltage test unit is: first valve housing to be checked is contained on valve fixture, housing withstand voltage test unit is selected by industrial computer, and by industrial computer setting withstand voltage test system pressure, test(ing) medium pressure and valve body dwell time, then withstand voltage test oil pump is started, initialization system oil pressure, hydraulic electromagnetic valve is unloaded in connection, disconnects this test(ing) medium loop, place, and opens ball valve, and test(ing) medium arrives test(ing) medium chamber and is full of test(ing) medium chamber, then three position four-way directional control valve is connected, make hydraulic oil through withstand voltage test oil pump, the P mouth of three position four-way directional control valve, B mouth is transported to the left oil pocket that oil drives pressurized cylinder, right oil pocket oil return, when piston movement is to right travel switch, piston ceases movement, switch three position four-way directional control valve, withstand voltage test oil pump drives hydraulic oil to enter the right oil pocket that oil drives pressurized cylinder, promote piston to left movement, left oil pocket oil return, test(ing) medium simultaneously in medium pool enters test(ing) medium chamber, when piston movement is to left travel switch, piston ceases movement, three position four-way directional control valve commutates again, piston moves right, test(ing) medium is continued to be pressed into valve housing to be checked, pressure medium in housing is raised, repeat said process, pressure in housing is made constantly to increase, when the hydraulic pressure that withstand voltage test precision pressure gauge detects reaches setting test pressure, cut off three position four-way directional control valve, stop, through the pressurization of test(ing) medium chamber, the hydraulic pressure in housing being remained unchanged, and starting timing,
When the dwell time reaches the dwell time of setting, open and unload hydraulic electromagnetic valve, the water in emptying valve housing to be checked and pipeline, then close and unload hydraulic electromagnetic valve, housing withstand voltage test terminates;
The concrete test procedure of described valve event performance test unit is: first select the test of valve performance by industrial computer, and set out air circuit pressure upper limit, air inlet loop threshold pression and action frequency; Then gas source switch is opened, gases at high pressure input the test gentle keyholed back plate road of pipeline respectively, open entrance open electromagnetic valve, make air inlet circuit entrance open Pneumatic valve to open, gases at high pressure enter tested valve through air inlet loop, when the high-pressure gas pressure entered is greater than the opening pressure of tested valve, tested valve open, gases at high pressure flow through tested valve door, enter out air circuit, use air circuit air pressure and raise; When the air pressure that the outlet pressure sensor going out air circuit detects reaches the pressure upper limit of setting, close entrance open electromagnetic valve, make air inlet circuit entrance open Pneumatic valve to close, cut off air inlet loop, open entrance again and unload solenoid valve, make air inlet circuit entrance unload Pneumatic valve to open, lay down the gases at high pressure in air inlet loop; When the air pressure that the inlet pressure transducer in air inlet loop detects reaches the threshold pression of setting, open outlet and unload solenoid valve, use air circuit outlet to unload Pneumatic valve and open, lay down out the gases at high pressure in air circuit, then close outlet and unload solenoid valve, outlet is unloaded Pneumatic valve and is closed, whole tested valve performance has tested one-off, and rolling counters forward once, repeats above-mentioned flow process, when action frequency reaches set action number of times, valve event performance test terminates.
The beneficial effect that the present invention produces is:
1, the various tests of multiple valve integrate by apparatus of the present invention, and shared by the parts such as industrial computer and monitoring software, fuel tank, hydraulic pressure/gas control control system, compact conformation, can reduce manufacturing cost, simplifies the operation course.
2, monitoring software adopts the form of animation, show the test data of intelligent instrument real-time dynamicly, the test process of various valve and test result are controlled and record automatically, reaction test data truly, and avoid artificial reading error, reduce manpower and time cost.Basis for estimation is accurately provided to scientific research and development and test.
The result of 3, testing and dynamic process are preserved with EXCEL form, and can carry out report printing, and access is convenient, and trackability is good.
Accompanying drawing explanation
Fig. 1 is the composition schematic diagram of valve intelligent integrated proving installation of the present invention;
Fig. 2 is the circuit theory schematic diagram of valve intelligent integrated proving installation of the present invention;
Fig. 3 is the structural representation of stop valve durability test headstock gear of the present invention;
Fig. 4 is the vertical view of Fig. 3;
Fig. 5 is stop valve durability test oil pressure schematic diagram of the present invention;
Fig. 6 is that inventive shell withstand voltage test oil drives pressurized cylinder structural representation;
Fig. 7 is the vertical view of Fig. 6;
Fig. 8 is inventive shell withstand voltage test oil pressure schematic diagram;
Fig. 9 is valve event performance test apparatus oil pressure schematic diagram of the present invention.
Embodiment
As Fig. 1, shown in Fig. 2, cryogenic insulated cylinder valve intelligent integrated proving installation of the present invention comprises industrial computer 1, this industrial computer 1 connects PLC control system 2 through RS232 serial communication interface, the input end of this PLC control system 2 connects stop valve durability test unit 3, housing withstand voltage test unit 4, the automatic/hand switching push button of valve event performance test unit 5 and limit switch signal, the output terminal of this PLC control system 2 connects stop valve durability test unit 3 through contactless relay 6, housing withstand voltage test unit 4, the electromagnetic valve coil of valve event performance test unit 5, this stop valve durability test unit 3, housing withstand voltage test unit 4, the pressure sensor signal of valve event performance test unit 5 connects PLC control system 2 through A/D module 7.This industrial computer 1 is contained on monitoring cabinet 8, and this monitoring cabinet 8 is installed the pressure monitor table 9 of stop valve durability test unit 3, housing withstand voltage test unit 4, valve event performance test unit 5, installation test oil pump and fuel tank 2 etc. in this monitoring cabinet 8.This fuel tank 2 can be used as the fuel tank 37 of stop valve durability test unit 3, also can be the fuel tank 58 of housing withstand voltage test unit 4.
As shown in Figure 3-Figure 5, stop valve durability test unit 3 of the present invention comprises stop valve headstock gear 30, durability test solenoid directional control valve 31, durability test retaining valve 32, durability test oil pump 33.This stop valve headstock gear 30 comprises cylinder body 301, is contained in the double-head piston 302 that can move back and forth along the length direction of cylinder body 301 in cylinder body 301; Piston-rack 303 is formed by being with the connecting link of tooth bar to link together between two pistons of this double-head piston 302; The length direction being axially perpendicular to cylinder body 301 of the gear shaft 304 with piston-rack 303 engaged transmission, this gear shaft 304 is equipped with in the side of piston-rack 303; One end of gear shaft 304 is stretched out through cylinder body 301, and connects multiple multiple pusher dogs 305 for stirring stop valve handwheel; Tubing sub 306,307 is all equipped with in two ends of cylinder body 301, two tubing subs 306,307 are communicated with two liquid outlets of durability test solenoid directional control valve 31 respectively by pipeline, and the hydraulic oil in fuel tank delivers to the inlet of durability test solenoid directional control valve 31 through durability test oil pump 33, durability test retaining valve 32.
For guaranteeing durability test unit security of operation, the output terminal of this durability test oil pump 33 is also connected to durability test surplus valve 34, durability test tensimeter 35, durability test pressure transducer 36, to adjust the system oil pressure of durability test unit.In addition, two liquid outlets of durability test solenoid directional control valve 32 respectively and connect the positive surplus valve of durability test 38 or the anti-surplus valve 39 of durability test, to set the operating oil pressure in cylinder body 301 liang of chambeies, thus the opening and closing moment of torsion of simulation stop valve valve.
When durability test unit 3 of the present invention uses, first by industrial computer 1 selective cut-off valve durability test unit 3, set durability test number of times and stop valve by industrial computer 1 to rotate forward and reversing time, and Start-up life test oil pump 33 works, regulate durability test surplus valve 34 initialization system pressure, whether the pressure simultaneously observing the display of durability test tensimeter 35 reaches service life experiment system pressure, required pressure when regulating the positive surplus valve of durability test 38 to be set as that stop valve rotates forward, required pressure when regulating the anti-surplus valve of durability test 39 to be set as that stop valve reverses.Then, by system " automatic/hand " selector switch rotation direction " automatically ", press " startup " button, Start-up life controlling test program, control flow is: the hydraulic oil in fuel tank 37 is transported to durability test solenoid directional control valve 31 through durability test retaining valve 33 by durability test oil pump 33, the coil DT1 of durability test solenoid directional control valve 31 is energized, coil DT2 power-off, the left chamber oil-feed of stop valve headstock gear 30, promote piston-rack 303 and do rectilinear motion to the right, piston-rack 303 driven gear axle 304 rotates forward, thus the handwheel driving pusher dog 305 to stir stop valve rotates forward, along with oil increasing, pressure increase, when reaching the set pressure of the positive surplus valve 38 of durability test, release opened by the positive surplus valve 38 of durability test, simultaneously, the moment of torsion acted on stop valve handwheel reaches valve closing torque value, close shutoff valve.After the time delay stop valve rotating forward time, the coil DT1 power-off of durability test solenoid directional control valve 31, coil DT2 is energized, the right chamber oil-feed of stop valve headstock gear 30, the oil return of left chamber, left cavity pressure reduces, right cavity pressure raises, promote piston-rack 303 and do rectilinear motion left, piston-rack 303 driven gear axle 304 reverses, thus drive pusher dog 305 to stir the reversion of stop valve handwheel, along with oil increasing, pressure increase, when reaching the set pressure of the anti-surplus valve 39 of durability test, release opened by the anti-surplus valve 39 of durability test, simultaneously, act on moment of torsion on stop valve handwheel and reach valve opening torque value, open valve.After time delay stop valve reversing time, the coil DT2 power-off of durability test solenoid directional control valve 31, coil DT1 is energized again, starts new circulation.Meanwhile, durability test pressure transducer 36 acquisition test pressure sends industrial computer 1 to through PLC control system 2 to carry out recording and preserving, and shows open and close moment of torsion and inlet pressure change curve.Meanwhile, the counter of industrial computer 1 starts counting, when namely the test number (TN) reaching setting stops the work of stop valve durability test unit 3 automatically.
As Figure 6-Figure 8, inventive shell withstand voltage test unit 4 comprises oil and drives pressurized cylinder 40, withstand voltage test oil pump 41, three position four-way directional control valve 42, ball valve 43, unloads hydraulic electromagnetic valve 44, medium pool 45 and valve frock 46.This oil drives the cylinder body 401 that pressurized cylinder 40 comprises inner hollow, the piston 402 that ladder oblique crank Z is made is set in this cylinder body, be connected through supporting component and seal assembly between this piston 402 with cylinder body 401, and this inner chamber of cylinder block is divided into left oil pocket a, right oil pocket b, seepage recycling cavity c, test(ing) medium chamber d totally 4 chambers successively by supporting component and seal assembly, the cecum of this cylinder body 401 be provided be provided with communicate with test(ing) medium chamber d enter dielectric valve 403 and go out dielectric valve 404.The left oil pocket a that this oil drives pressurized cylinder is communicated with the B mouth of three position four-way directional control valve 42, right oil pocket b is communicated with the A mouth of three position four-way directional control valve, the hydraulic oil of fuel tank is communicated with the P mouth of three position four-way directional control valve 42 through withstand voltage test oil pump 41, the T mouth of three position four-way directional control valve 42 is communicated with fuel tank.This enters dielectric valve 403 and is communicated with medium pool 45 through ball valve 43, goes out dielectric valve 404 and is communicated with valve frock 46, and the output terminal going out dielectric valve 404 is communicated with medium pool 45 through unloading hydraulic electromagnetic valve 44.Cylinder body 401 outside spacers one distance that this oil drives pressurized cylinder is provided with left travel switch 47, right travel switch 48, the stage casing of piston 402 is provided with the induction rod 49 perpendicular to piston axis, this induction rod 49 stretches out outside cylinder body 401, and piston 402 drives induction rod 49 to move together, when moving to left and right travel switch 47,48, induction rod 49 and left and right travel switch 47,48 are responded to and are sent signal, move between left and right travel switch with control piston 402.
For guaranteeing housing withstand voltage test unit 4 security of operation, the output terminal of this withstand voltage test oil pump 41 is also connected to the first withstand voltage test surplus valve 50, withstand voltage test system pressure table 51, withstand voltage test system pressure sensor 52, second withstand voltage test surplus valve 56, to adjust the system oil pressure of housing withstand voltage test unit.In addition, pneumatic test pressure sensor 53, withstand voltage test precision pressure gauge 54, pneumatic test pressure table 55 are installed on out the output terminal of dielectric valve 404, automatically control and monitoring test pressure medium for realizing.The output terminal of withstand voltage test oil pump 41 connects the T mouth of three position four-way directional control valve 42 through protection solenoid valve 57.
The concrete method of testing of inventive shell withstand voltage test unit 4 is:
1) valve housing is contained on valve fixture 46, selects housing withstand voltage test unit 4 by the man-machine interface of industrial computer 1, and set withstand voltage test system pressure, test(ing) medium pressure and valve body dwell time by industrial computer 1.
2) withstand voltage test oil pump 41 is started, regulate first and second withstand voltage test system surplus valve 50,56, set system oil pressure (the different tests pressure requirements by regulating the set pressure of first and second withstand voltage test system surplus valve 50,56 to meet valve body), withstand voltage test system pressure sensor 52 acquisition test pressure, be sent to industrial computer 1 to carry out recording and preserving, withstand voltage test system pressure table 51 shows oil pressure; Connect the coil DT4 unloading hydraulic electromagnetic valve 44, disconnect this test(ing) medium loop, place, and open ball valve 43, test(ing) medium arrives test(ing) medium chamber d through entering dielectric valve 403, is full of test(ing) medium chamber.
3) connect the coil DT2 of three position four-way directional control valve 42, the hydraulic oil of fuel tank 58 is transported to the left oil pocket a that oil drives pressurized cylinder 40, right oil pocket b oil return through the P mouth of withstand voltage test oil pump 41, three position four-way directional control valve 42, B mouth.When piston 402 moves to right travel switch 48, piston ceases movement, close the coil DT2 in three position four-way directional control valve 42, connect the coil DT1 in three position four-way directional control valve 42, withstand voltage test oil pump 41 drive hydraulic oil to enter right oil pocket b that oil drives pressurized cylinder 40, promote piston 402 to left movement, left oil pocket a oil return, test(ing) medium simultaneously in medium pool enters test(ing) medium chamber d, when piston 402 moves to left travel switch 47, piston 402 stop motion, close the coil DT1 in three position four-way directional control valve 42 again, open the coil DT2 in three position four-way directional control valve 42, piston moves right, test(ing) medium is continued to be pressed into valve housing to be checked, pressure medium in housing is raised, repeat said process, pressure in housing is made constantly to increase.
4) when the hydraulic pressure detected when withstand voltage test precision pressure gauge 54 reaches setting test pressure, close the coil DT2 in three position four-way directional control valve 42, stop pressurization, the hydraulic pressure in housing is remained unchanged, and starts timing.
5) when the dwell time reaches the dwell time of setting, open the coil DT4 unloading hydraulic electromagnetic valve 44, the water in emptying valve housing to be checked and pipeline, then close and unload hydraulic electromagnetic valve 44, housing withstand voltage test terminates.
Connect when protection solenoid valve 57 is tested, stop disconnecting during test, like this, when withstand voltage test oil pump 41 error starting, piston 402 remains static, protection system.
As shown in Figure 9, valve event performance test unit 5 of the present invention comprises band valve source of the gas 61, source of the gas reduction valve 62, pilot piping reduction valve 63, entrance opens Pneumatic valve 64, entrance open electromagnetic valve 65, entrance unloads solenoid valve 66, entrance unloads Pneumatic valve 67, solenoid valve 68 is unloaded in outlet, Pneumatic valve 69, delivery gauge 70, outlet pressure sensor 71, tested valve 72, inlet pressure transducer 73, inlet pressure table 74 are unloaded in outlet.Wherein, source of the gas 61 is through source of the gas reduction valve 62 connection test pipeline A and pneumatic pipeline B, this test pipeline A comprises through pilot piping reduction valve 63 and the entrance open electromagnetic valve 65 connect, entrance unload solenoid valve 66, solenoid valve 68 is unloaded in outlet, and this pneumatic pipeline B comprises that the entrance be linked in sequence opens Pneumatic valve 64, entrance unloads Pneumatic valve 67.This entrance opens the gas output end of the control end connection entrance open electromagnetic valve 65 of Pneumatic valve 64, and the control end that entrance unloads Pneumatic valve 67 connects the gas output end that entrance unloads solenoid valve 66.The inlet end of tested valve 72 is connected to that entrance opens Pneumatic valve 64, entrance unloads between Pneumatic valve 67, and the outlet side connection outlet of tested valve 72 unloads Pneumatic valve 69, and the control end connection outlet that Pneumatic valve 69 is unloaded in this outlet unloads the gas output end of solenoid directional control valve 68.Inlet, outlet end inlet porting pressure transducer 73, the outlet pressure sensor 71 respectively of this tested valve 72, to flow to industrial computer 1 in time by air inlet circuit pressure, circuit pressure of giving vent to anger and to realize automatically controlling.Entrance drives the outlet side inlet porting tensimeter 74 of Pneumatic valve 64, to monitor the inlet pressure of tested valve 72.
During the concrete test of valve event performance test unit 5 of the present invention, the man-machine interface of industrial computer 1 selects " valve event performance test ", and sets out air circuit pressure upper limit, air inlet loop threshold pression and action frequency.Open the switch of source of the gas 61, gases at high pressure are after source of the gas reduction valve 62 step-down, and the gentle keyholed back plate road of pipeline is tested in input respectively.By " automatic/hand " selector switch rotation direction " automatically ", press " startup " button, start valve performance controlling test program, control flow is as follows:
1) entrance open electromagnetic valve 65 is opened, make air inlet circuit entrance open Pneumatic valve 64 and control gas circuit conducting, entrance is opened Pneumatic valve 64 and is opened, tested valve 72 is entered through air inlet loop through post-decompression gases at high pressure, when the high-pressure gas pressure entered is greater than the opening pressure of tested valve 72, tested valve 72 is opened, and gases at high pressure flow through tested valve door 72, enter out air circuit, use air circuit air pressure and raise.
2) when the air pressure detected when the outlet pressure sensor 71 going out air circuit reaches the pressure upper limit of setting, close entrance open electromagnetic valve 65, make air inlet circuit entrance open Pneumatic valve 64 and close, cut off air inlet loop; Open entrance again and unload solenoid valve 66, make air inlet circuit entrance unload Pneumatic valve 67 and control gas circuit conducting, entrance unloads Pneumatic valve 67 and opens, and lays down the gases at high pressure in air inlet loop.
3) when the air pressure detected when the inlet pressure transducer 73 in air inlet loop reaches the threshold pression of setting, open outlet and unload solenoid valve 68, use air circuit outlet to unload Pneumatic valve 69 and control gas circuit conducting, outlet is unloaded Pneumatic valve 69 and is opened, lay down out the gases at high pressure in air circuit, then close outlet and unload solenoid valve 68, outlet is unloaded Pneumatic valve 69 and is closed, whole tested valve 72 performance has tested one-off, rolling counters forward once, repeat flow process 1) to 3), when action frequency reaches set action number of times, valve event performance test terminates.
Claims (10)
1. a cryogenic insulated cylinder valve intelligent integrated proving installation, it is characterized in that comprising industrial computer (1), this industrial computer connects PLC control system (2) through RS232 serial communication interface, the input end of this PLC control system connects stop valve durability test unit (3), housing withstand voltage test unit (4), the automatic/hand switching push button of valve event performance test unit (5) and limit switch signal, the output terminal of this PLC control system connects stop valve durability test unit through contactless relay (6), housing withstand voltage test unit, the Controlling solenoid valve coil of valve event performance test unit, this stop valve durability test unit, housing withstand voltage test unit, the pressure sensor signal of valve event performance test unit connects PLC control system through A/D module (7).
2. a kind of cryogenic insulated cylinder valve intelligent integrated proving installation according to claim 1, it is characterized in that, described stop valve durability test unit comprises stop valve headstock gear (30), durability test solenoid directional control valve (31), durability test retaining valve (32), durability test oil pump (33); This stop valve headstock gear comprises cylinder body (301), is contained in cylinder body along the double-head piston (302) that the length direction of cylinder body moves back and forth; Piston-rack (303) is formed by being with the connecting link of tooth bar to link together between two pistons of this double-head piston; The side of piston-rack is equipped with and the gear shaft of piston-rack engaged transmission (304), the length direction being axially perpendicular to cylinder body of this gear shaft; One end of gear shaft is stretched out through cylinder body, and connects multiple multiple pusher dogs (305) for stirring stop valve handwheel; The tubing sub (306,307) of cylinder body two ends is communicated with two liquid outlets of durability test solenoid directional control valve respectively by pipeline, and the hydraulic oil in fuel tank delivers to the inlet of durability test solenoid directional control valve through durability test oil pump (33), durability test retaining valve (32).
3. a kind of cryogenic insulated cylinder valve intelligent integrated proving installation according to claim 2, it is characterized in that, described durability test oil delivery side of pump is also connected to durability test surplus valve (34), durability test tensimeter (35), durability test pressure transducer (36), and two liquid outlets of durability test solenoid directional control valve respectively connection lifetime test positive surplus valve (38), the anti-surplus valve of durability test (39).
4. a kind of cryogenic insulated cylinder valve intelligent integrated proving installation according to claim 1, it is characterized in that, described housing withstand voltage test unit comprises oil and drives pressurized cylinder (40), withstand voltage test oil pump (41), three position four-way directional control valve (42), ball valve (43), unloads hydraulic electromagnetic valve (44), medium pool (45) and valve frock (46); This oil drives the cylinder body (401) that pressurized cylinder comprises inner hollow, the piston (402) that ladder oblique crank Z is made is set in this cylinder body, 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), right oil pocket (b), seepage recycling cavity (c), test(ing) medium chamber (d) totally 4 chambers successively by supporting component and seal assembly, the cecum of this cylinder body be provided with communicate with test(ing) medium chamber enter dielectric valve (403) and go out dielectric valve (404); The B mouth of left oil pocket and three position four-way directional control valve that this oil drives pressurized cylinder is communicated with, right oil pocket is communicated with the A mouth of three position four-way directional control valve, the hydraulic oil of fuel tank is communicated with the P mouth of three position four-way directional control valve through withstand voltage test oil pump (41), the T mouth of three position four-way directional control valve is communicated with fuel tank; This enters dielectric valve and is communicated with medium pool (45) through ball valve, goes out dielectric valve and is communicated with valve frock, and the output terminal going out dielectric valve is communicated with medium pool through unloading hydraulic electromagnetic valve (44); Cylinder body outside spacers one distance that this oil drives pressurized cylinder is provided with left travel switch (47), right travel switch (48), the stage casing of piston is provided with the induction rod (49) perpendicular to piston axis, this induction rod stretches out outside cylinder body, and 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.
5. a kind of cryogenic insulated cylinder valve intelligent integrated proving installation according to claim 4, it is characterized in that, described withstand voltage test oil delivery side of pump is also connected to the first withstand voltage test surplus valve (50), withstand voltage test system pressure table (51), withstand voltage test system pressure sensor (52), the second withstand voltage test surplus valve (56), and this output terminal going out dielectric valve installs pneumatic test pressure sensor (53), withstand voltage test precision pressure gauge (54), pneumatic test pressure table (55).
6. a kind of cryogenic insulated cylinder valve intelligent integrated proving installation according to claim 4 or 5, is characterized in that, described withstand voltage test oil delivery side of pump connects the T mouth of three position four-way directional control valve through protection solenoid valve (57).
7. a kind of cryogenic insulated cylinder valve intelligent integrated proving installation according to claim 1, it is characterized in that, described valve event performance test unit comprises a source of the gas (61), this source of the gas is through source of the gas reduction valve (62) connection test pipeline (A) and pneumatic pipeline (B), this test pipeline comprises through pilot piping reduction valve (63) and the entrance open electromagnetic valve (65) connect, entrance unload solenoid valve (66), solenoid valve (68) is unloaded in outlet, and this pneumatic pipeline comprises that the entrance be linked in sequence opens Pneumatic valve (64), entrance unloads Pneumatic valve (67); This entrance opens the gas output end of the control end connection entrance open electromagnetic valve of Pneumatic valve, and the control end that entrance unloads Pneumatic valve connects the gas output end that entrance unloads solenoid valve; The inlet end of tested valve (72) is connected to that entrance opens Pneumatic valve, entrance unloads between Pneumatic valve, and the outlet side connection outlet of tested valve unloads Pneumatic valve (69), and the control end connection outlet that Pneumatic valve is unloaded in this outlet unloads the gas output end of solenoid directional control valve.
8. a kind of cryogenic insulated cylinder valve intelligent integrated proving installation according to claim 7, is characterized in that, inlet, outlet end inlet porting pressure transducer (73), the outlet pressure sensor (71) respectively of this tested valve.
9. the method for testing of cryogenic insulated cylinder valve intelligent integrated proving installation according to any one of a claim 1-8, it is characterized in that, be made up of by RS-232 serial communication interface industrial computer and PLC control system, the distributed two stage control system of slave computer, control procedure and data acquisition are by upper, slave computer has been worked in coordination with, in host computer, monitoring software is installed, for arranging test parameters, carry out real time data monitoring, dynamic process test figure and test report export, and this monitoring software comprises stop valve durability test unit, housing withstand voltage test unit, valve event performance test unit, slave computer automatically completes corresponding process of the test after receiving the concrete test command that monitoring software sends.
10. a kind of cryogenic insulated cylinder valve intelligent integrated method of testing according to claim 9, is characterized in that,
The concrete test procedure of described stop valve durability test unit is: first by industrial computer selective cut-off valve durability test unit, rotated forward and reversing time by industrial computer setting durability test number of times and stop valve, and Start-up life test operation of oil pump, regulate durability test surplus valve initialization system pressure, required pressure when regulating durability test positive surplus valve setting stop valve to rotate forward, required pressure during adjustment durability test anti-surplus valve setting stop valve reversion; Then, select automatic operation mode, hydraulic oil in fuel tank is transported to durability test solenoid directional control valve by Start-up life test oil pump, the left chamber oil-feed of stop valve headstock gear, promote piston-rack and do rectilinear motion to the right, piston-rack driven gear axle rotates forward, thus the handwheel driving pusher dog to stir stop valve rotates forward, along with oil increasing, pressure increase, when reaching the set pressure of the positive surplus valve of durability test, release opened by the positive surplus valve of durability test, meanwhile, the moment of torsion acted on stop valve handwheel reaches valve closing torque value, closes shutoff valve; After the time delay stop valve rotating forward time, make the right chamber oil-feed of stop valve headstock gear, the oil return of left chamber, promote piston-rack and do rectilinear motion left, piston-rack driven gear axle reverses, thus drive pusher dog to stir the reversion of stop valve handwheel, when reaching the set pressure of the anti-surplus valve of durability test, release opened by the anti-surplus valve of durability test, simultaneously, act on moment of torsion on stop valve handwheel and reach valve opening torque value, open valve; After time delay stop valve reversing time, start new circulation, when namely the test number (TN) reaching setting stops the work of stop valve durability test unit automatically;
The concrete test procedure of described housing withstand voltage test unit is: first valve housing to be checked is contained on valve fixture, housing withstand voltage test unit is selected by industrial computer, and by industrial computer setting withstand voltage test system pressure, test(ing) medium pressure and valve body dwell time, then withstand voltage test oil pump is started, initialization system oil pressure, hydraulic electromagnetic valve is unloaded in connection, disconnects this test(ing) medium loop, place, and opens ball valve, and test(ing) medium arrives test(ing) medium chamber and is full of test(ing) medium chamber, then three position four-way directional control valve is connected, make hydraulic oil through withstand voltage test oil pump, the P mouth of three position four-way directional control valve, B mouth is transported to the left oil pocket that oil drives pressurized cylinder, right oil pocket oil return, when piston movement is to right travel switch, piston ceases movement, switch three position four-way directional control valve, withstand voltage test oil pump drives hydraulic oil to enter the right oil pocket that oil drives pressurized cylinder, promote piston to left movement, left oil pocket oil return, test(ing) medium simultaneously in medium pool enters test(ing) medium chamber, when piston movement is to left travel switch, piston ceases movement, three position four-way directional control valve commutates again, piston moves right, test(ing) medium is continued to be pressed into valve housing to be checked, pressure medium in housing is raised, repeat said process, pressure in housing is made constantly to increase, when the hydraulic pressure that withstand voltage test precision pressure gauge detects reaches setting test pressure, cut off three position four-way directional control valve, stop, through the pressurization of test(ing) medium chamber, the hydraulic pressure in housing being remained unchanged, and starting timing,
When the dwell time reaches the dwell time of setting, open and unload hydraulic electromagnetic valve, the water in emptying valve housing to be checked and pipeline, then close and unload hydraulic electromagnetic valve, housing withstand voltage test terminates;
The concrete test procedure of described valve event performance test unit is: first select the test of valve performance by industrial computer, and set out air circuit pressure upper limit, air inlet loop threshold pression and action frequency; Then gas source switch is opened, gases at high pressure input the test gentle keyholed back plate road of pipeline respectively, open entrance open electromagnetic valve, make air inlet circuit entrance open Pneumatic valve to open, gases at high pressure enter tested valve through air inlet loop, when the high-pressure gas pressure entered is greater than the opening pressure of tested valve, tested valve open, gases at high pressure flow through tested valve door, enter out air circuit, use air circuit air pressure and raise; When the air pressure that the outlet pressure sensor going out air circuit detects reaches the pressure upper limit of setting, close entrance open electromagnetic valve, make air inlet circuit entrance open Pneumatic valve to close, cut off air inlet loop, open entrance again and unload solenoid valve, make air inlet circuit entrance unload Pneumatic valve to open, lay down the gases at high pressure in air inlet loop; When the air pressure that the inlet pressure transducer in air inlet loop detects reaches the threshold pression of setting, open outlet and unload solenoid valve, use air circuit outlet to unload Pneumatic valve and open, lay down out the gases at high pressure in air circuit, then close outlet and unload solenoid valve, outlet is unloaded Pneumatic valve and is closed, whole tested valve performance has tested one-off, and rolling counters forward once, repeats above-mentioned flow process, when action frequency reaches set action number of times, valve event performance test terminates.
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| CN114922807A (en) * | 2022-06-09 | 2022-08-19 | 中车青岛四方机车车辆股份有限公司 | Intelligent detection system for components of air compressor of railway vehicle |
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| CN117905685A (en) * | 2024-03-20 | 2024-04-19 | 中海油田服务股份有限公司 | Plunger pump high temperature test equipment |
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