CN109269796A - Zero-pressure valve test device and test method - Google Patents
Zero-pressure valve test device and test method Download PDFInfo
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- CN109269796A CN109269796A CN201811253556.6A CN201811253556A CN109269796A CN 109269796 A CN109269796 A CN 109269796A CN 201811253556 A CN201811253556 A CN 201811253556A CN 109269796 A CN109269796 A CN 109269796A
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- 238000012360 testing method Methods 0.000 title claims abstract description 38
- 238000010998 test method Methods 0.000 title claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 230000033228 biological regulation Effects 0.000 claims description 27
- 238000009434 installation Methods 0.000 claims description 7
- 238000012544 monitoring process Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 241000486406 Trachea Species 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 210000003437 trachea Anatomy 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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Abstract
The invention discloses a kind of zero-pressure valve test device and test methods.The reducing draw is equipped at the fans entrance pipe of blower tooling, the reducing draw connects clamping tooling by outlet straight tube, outlet working plate positioned at clamping tooling side is provided with through-hole as exit passageway, and exit passageway one end is connected with outlet straight tube, and the other end is equipped with outlet gasket.The clamping tooling other side is equipped with tested valve, and locating slot of the tested valve in tested valve support plate moves until contacting sealing with outlet gasket, and tested valve rear is equipped with lower air cylinder, and the cylinder rod actuation of lower air cylinder makes down-pressed pole compress tested valve.The entrance working plate of sealing frock is provided with through-hole as access road, access road is equipped with entrance pad, entrance working plate side is equipped with preceding push cylinder, preceding push cylinder pushes entrance working plate to contact entrance pad close to tested valve sliding and seals tested valve, and access road connects gas source tooling by arc hose.High degree of automation of the present invention, it is convenient to operate, and data are accurate.
Description
Technical field
The invention belongs to gas flow control regulator testing fields, more particularly, to a kind of zero-pressure valve test device and side
Method.
Background technique
Zero-pressure valve is a kind of for the gas flow control regulator and proportioner of combustion system, interior multifuel combustion mouth, just
Negative furnace pressure etc. is used together.It is designed inside zero-pressure valve using diaphragm type and automotive resistance formula counteracting spring, to measuring gas for the second time
Pressure is controlled, and by ambient pressure introducing port and pressure-regulating valve door, can make ring where second of survey air pressure and equipment
Border air pressure is equal, and realizes that flow is adjusted.At present in many enterprises or in the way of manual clamping, and by artificial
Mechanical pressure gauge is observed to record the modes such as data, operation is more complex, and test beat is slow, and data consistency is not good enough.Therefore it develops
Design automation degree is high, test is quick, the accurate test device of data, is the effective way for meeting the zero-pressure valve test market demand
Diameter.
Summary of the invention
In order to solve the deficiencies in the prior art, controlling to adjust zero-pressure valve, test automation degree is high, test is quick, data
Accurately, the present invention provides a kind of zero-pressure valve test device and test methods.
The technical solution adopted by the present invention is that:
One, zero-pressure valve test device
The present invention includes the blower tooling being sequentially arranged along straight line, clamping tooling, sealing frock and gas source tooling, fanman
Dress connects clamping tooling by outlet straight tube, is equipped with tested valve on clamping tooling, and the side of tested valve is connect with sealing frock,
Sealing frock connects gas source tooling by arc hose.
Blower tooling includes the blower being fixed in blower support base, and the side of blower is equipped with to be connected to fan outlet
Extension air hose, extend on air hose and anemobiagraph be installed, the other side of blower is equipped with inlet tube, and inlet tube is along own axes direction
It is connected with the reducing draw and loudspeaker air inlet in turn, the diameter of reducing draw middle section part is less than the diameter at reducing draw both ends,
Lower end aperture of the reducing draw at diameter minimum make the reducing draw be three-port structure, the reducing draw lower end tapping successively
It is connected to outlet connecting tube and bridge piece, bridge piece is connect with outlet straight tube.
Clamping tooling includes outlet working plate, tested valve and the lower air cylinder being mounted on clamping tooling bottom plate, exports work
The side of loading board is equipped with support frame, and outlet working plate is vertically fixed on clamping tooling bottom plate by support frame close to blower tooling
Position, export the upper end of working plate through first pressure sensor erection joint and first pressure sensor be installed, export tooling
Plate through-thickness is provided with through-hole as exit passageway, and one end of exit passageway is connected with outlet straight tube, exit passageway it is another
End is equipped with the outlet gasket of annular.The other side of outlet working plate is equipped with tested valve, and tested valve is mounted on tested valve support plate
On, tested valve support plate is provided with the locating slot with the cooperation assembly of tested valve bottom, after tested valve is installed in tested valve support plate
Along locating slot transverse shifting until one end of tested valve contacts sealing with outlet gasket.The rear of tested valve, which is equipped with down, calms the anger
Cylinder, lower air cylinder are fixed on clamping tooling bottom plate by supporting element, and the cylinder rod of lower air cylinder, which passes perpendicularly through, pushes support plate court
It is stretched out to clamping tooling bottom plate, the end that cylinder rod is stretched out is equipped with horizontally disposed down-pressed pole facing forward, and the cylinder rod of lower air cylinder is continuous
It stretches out so that down-pressed pole compresses tested valve.
Sealing frock includes the entrance working plate being mounted on sealing frock bottom plate and preceding push cylinder, and sealing frock bottom plate leans on
The side of nearly clamping tooling is equipped with guide rail, and the lower end of entrance working plate is slided on guide rail by sliding block.The one of entrance working plate
Side is equipped with preceding push cylinder, and the cylinder rod of preceding push cylinder connect with the lower part of entrance working plate, the cylinder rod of preceding push cylinder stretch out push into
Mouth working plate is slided in guide rail, and the cylinder rod end of preceding push cylinder is equipped with the air cylinder fixed plate that is pushed forward perpendicular to sealing frock bottom plate, preceding
Push cylinder is by being pushed forward air cylinder fixed plate fixed on sealing frock bottom plate.The upper end of entrance working plate is through second pressure sensor
Erection joint is equipped with second pressure sensor, and entrance working plate through-thickness is provided with through-hole as access road, entrance
The exit passageway coaxial line in channel and clamping tooling, one end of access road are equipped with the entrance pad of annular, and preceding push cylinder pushes
Entrance working plate slides on guide rail to the direction close to tested valve, so that entrance pad contacts and seals the another of tested valve
The other end at end, access road connects arc hose.
Gas source tooling includes gas circuit bottom plate, level-one pressure regulator valve, flowmeter and second voltage regulation valve, passes through gas circuit on gas circuit bottom plate
Backplanes support block is fixed with gas circuit support frame, be successively equipped at intervals on gas circuit support frame along straight line level-one pressure regulator valve, flowmeter and
Second voltage regulation valve, one end of second voltage regulation valve are connected with the miner diameter end of reduced pipe, and the bigger diameter end of reduced pipe is connect with arc hose,
The other end of second voltage regulation valve connects one end of flowmeter by the second tracheae of connection, and the other end of flowmeter passes through the first tracheae
It is connect with one end of level-one pressure regulator valve, the other end of level-one pressure regulator valve is connected to air inlet tracheae, and test gas is entered by air inlet tracheae
The first tracheae, the second tracheae, reduced pipe is passed sequentially through to enter in arc hose.
Preferably, blower is fixed on fan installation frame, and fan installation frame is mounted in blower support plate, blower support plate
It is fixed in blower support base by multiple blower support columns.
Preferably, tested valve support plate is fixed on clamping tooling bottom plate by supporting block.
Preferably, supporting element includes pushing support plate and pushing support leg, and lower air cylinder, which is fixed on, to be pushed in support plate, under
Pressure support plate is fixed on clamping tooling bottom plate by two pushing support legs being arranged symmetrically.
Preferably, level-one pressure regulator valve is fixed on gas circuit support frame by the first link block, and flowmeter passes through the second connection
Block is fixed on gas circuit support frame, and second voltage regulation valve is fixed on gas circuit support frame by third link block.
Two, a kind of zero-pressure valve test method, comprising the following steps:
1) tested valve is installed in tested valve support plate and is positioned；
2) the cylinder rod actuation of the lower air cylinder of clamping tooling makes down-pressed pole compress tested valve；
3) the preceding push cylinder of sealing frock is pushed forward, and drives entrance working plate to slide along guide rail to close to tested valve, entrance work
Loading board then drives tested valve mobile towards outlet working plate, and preceding push cylinder continues to be pushed forward until entrance pad and outlet gasket point
The both ends of tested valve are not sealed；
4) gas source tooling is passed through test gas by air inlet tracheae, tests gas after level-one pressure regulator valve and second voltage regulation valve pressure regulation
Pressure decline, hereafter starts the numerical value of real-time monitoring flowmeter, first pressure sensor and second pressure sensor；
5) change the revolving speed of blower in a manner of PWM modulation, gas is after the reducing draw in tested valve outlet side in blower
Subnormal ambient is generated, the middle section diameter of the reducing draw is smaller, and the negative pressure value of tested valve is bigger, by the revolving speed for changing blower
The negative pressure value of tested valve is adjusted, tested valve is after internal pressure change, and internal valve port adjusts pressure size, so that it is big to change flow
It is small, pressure value before and after equipment time recording flow value and tested valve；
6) control system generates test curve, and makes a decision automatically, is then shut off gas source, stops lower air cylinder and is pushed forward gas
Cylinder actuation, test terminate.
It is preferred in step 1), tested valve is installed in tested valve support plate by locating slot accurate positionin.
It is preferred in step 4), gas, which is tested, after level-one pressure regulator valve and second voltage regulation valve pressure regulation is reduced to 3kpa.
The present invention is provided with the test device being made of blower tooling, clamping tooling, sealing frock and gas source tooling, passes through
Cylinder actuation is used cooperatively each section tooling, realizes the automation for making zero-pressure valve control to adjust test.
The invention has the advantages that:
1) present apparatus high degree of automation, instead of existing artificial clamping, it is convenient to operate；
2) auto-admission, automatically record data, test beat is fast；
3) high-precision electronic sensor is used, data are accurate, and consistency is good.
Detailed description of the invention
Fig. 1 is the front view of this test device；
Fig. 2 is blower tooling schematic diagram；
Fig. 3 is clamping tooling schematic diagram；
Fig. 4 is the top view of Fig. 3；
Fig. 5 is the partial side view of Fig. 3；
Fig. 6 is sealing frock schematic diagram；
Fig. 7 is gas source tooling schematic diagram.
In figure: 1 anemobiagraph, 2. extend air hose, 3. blowers, 4. inlet tubes, the 5. reducing draws, 6. fan installation frames, 7. wind
Machine support plate, 8. blower support columns, 9. blower support bases, 10. outlet connecting tubes, 11. bridge pieces, 12. loudspeaker air inlets,
13. outlet straight tube, 14. first pressure sensors, 15. outlet gaskets, 16. outlet working plates, 17. locating slots, 18. clamping toolings
Bottom plate, 19. lower air cylinders, 20. push support plate, and 21. push support leg, and 22. entrance pads, 23. entrance working plates, 24. lead
Rail, 25. arc hoses, push cylinder before 26., 27. sealing frock bottom plates, 28. reduced pipes, 29. second voltage regulation valves, 30. supporting blocks,
31. level-one pressure regulator valve, 32. flowmeters, 33. gas circuit support frames, 34. gas circuit bottom plates, 35. first tracheaes, 36. second tracheaes, 37.
Air inlet tracheae, 38. down-pressed poles, 39. support frames, 40. sliding blocks, 41. second pressure sensor erection joints, 42. tested valves, 43.
Gas circuit backplanes support block, 44. are pushed forward air cylinder fixed plate, 45. first link blocks, 46. second link blocks, 47. third link blocks,
48. blower tooling, 49. clamping toolings, 50. sealing frocks, 51. gas source toolings, 52. second pressure sensors, 53. first pressures
Sensor erection joint, 54. tested valve support plates.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
As shown in Figure 1, the present invention includes the blower tooling 48 being sequentially arranged along straight line, clamping tooling 49, sealing frock 50
With gas source tooling 51, blower tooling 48 connects clamping tooling 49 by outlet straight tube 13, is equipped with tested valve on clamping tooling 49
42, the right side of tested valve 42 is connect with sealing frock 50, and sealing frock 50 connects gas source tooling 51 by arc hose 25.
As shown in Fig. 2, blower tooling 48 includes blower 3, blower 3 is fixed on fan installation frame 6, and fan installation frame 6 is solid
Determine onto blower support plate 7,7 lower end of blower support plate is the blower support columns 8 of four square 4 points of distributions, connects blower
Support base 9.The left side of blower 3 is equipped with the rectangular short straight extension air hose 2 being connected to 3 air outlet of blower, extends on air hose 2 and pacifies
Equipped with anemobiagraph 1, the right side of blower 3 is equipped with circular inlet tube 4, and inlet tube 4 is connected in turn different along own axes direction
The diameter draw 5 and loudspeaker air inlet 12, the diameter of 5 middle section part of the reducing draw are less than the diameter at 5 both ends of the reducing draw, the reducing draw
The 5 lower end aperture at diameter minimum makes the reducing draw 5 in three-port structure, and the reducing draw 5 successively and goes out in lower end tapping
Gas connecting tube 10 is connected to the bridge piece 11 of big turning radian, and bridge piece 11 is connect with outlet straight tube 13.
As shown in Figure 3, Figure 4, clamping tooling 49 includes the outlet working plate 16 being mounted on clamping tooling bottom plate 18, is tested
Valve 42 and lower air cylinder 19, outlet working plate 16 are vertically fixed to clamping tooling bottom plate 18 by two rectangular-shaped support frames 39
On, two support frames 39 are in the left side for being evenly distributed on outlet working plate 16 in tandem.
The upper end of outlet working plate 16 is equipped with first pressure sensor 14 through first pressure sensor erection joint 53, out
Mouth 16 through-thickness of working plate is provided with through-hole as exit passageway, and the left end of exit passageway is connected with outlet straight tube 13, outlet
The right end in channel is equipped with the outlet gasket 15 of annular.
Tested valve 42 is mounted in tested valve support plate 54, and tested valve support plate 54 is provided with to match with 42 bottom of tested valve and attach together
The locating slot 17 matched, as shown in figure 4, locating slot 17 is not penetrated tested valve support plate 54, tested valve 42 is installed to tested valve support
It is moved left and right on plate 54 and along locating slot 17, tested valve 42 is moved to the left along locating slot 17 so that the left end of tested valve 42 is exported
Gasket 15 seals.
Tested valve support plate 54 is fixed to clamping tooling bottom plate 18 by the supporting block 30 of four square 4 points of distributions
On, the dead astern of tested valve 42 is equipped with lower air cylinder 19, and lower air cylinder 19, which is fixed on, to be pushed in support plate 20, pushes support plate
20 are fixed on clamping tooling bottom plate 18 by two pushing support legs 21 being arranged symmetrically, and the cylinder rod of lower air cylinder 19 is vertically worn
It crosses pushing support plate 20 to stretch out towards clamping tooling bottom plate 18, the end that cylinder rod is stretched out is equipped with horizontally disposed down-pressed pole facing forward
38, the cylinder rod of lower air cylinder 19 is constantly stretched out so that down-pressed pole 38 compresses tested valve 42.
As shown in figure 5, the angle between the cylinder rod and down-pressed pole 38 of lower air cylinder 19 is right angle, down-pressed pole 38 passes through triangle
Stretched form is fixed on cylinder rod end before bracket.
As shown in fig. 6, sealing frock 50 includes the entrance working plate 23 being mounted on sealing frock bottom plate 27 and is pushed forward gas
Cylinder 26, sealing frock bottom plate 27 are equipped with guide rail 24 close to the side of clamping tooling 49, and the lower end of entrance working plate 23 passes through sliding block
40 slide on guide rail 24.
The side of entrance working plate 23 is equipped with preceding push cylinder 26, the cylinder rod of preceding push cylinder 26 and the lower part of entrance working plate 23
Connection, the cylinder rod of preceding push cylinder 26, which is stretched out, pushes entrance working plate 23 to slide on guide rail 24 to the direction close to tested valve 42,
The cylinder rod end of preceding push cylinder 26, which is equipped with, is pushed forward air cylinder fixed plate 44 perpendicular to sealing frock bottom plate 27, is pushed forward air cylinder fixed plate 44
Push cylinder 26 before upper installation, preceding push cylinder 26 are connected with 23 bottom of entrance working plate.
The upper end of entrance working plate 23 is vertically installed with second pressure sensor through second pressure sensor erection joint 41
52,23 through-thickness of entrance working plate is provided with through-hole as access road, and the outlet of access road and clamping tooling 49 is logical
Road coaxial line, one end of access road are equipped with the entrance pad 22 of annular, the outlet gasket of entrance pad 22 and clamping tooling 49
15 are used to seal the both ends of tested valve 42, and the other end of access road connects arc hose 25.
As shown in fig. 7, gas source tooling 51 includes gas circuit bottom plate 34, level-one pressure regulator valve 31, flowmeter 32 and second voltage regulation valve
29, gas circuit support frame 33, gas circuit support are fixed with by two gas circuit backplanes support blocks 43 of left and right distribution on gas circuit bottom plate 34
Successively it is equipped at intervals with level-one pressure regulator valve 31, flowmeter 32 and second voltage regulation valve 29 on frame 33 along straight line, the one of second voltage regulation valve 29
End be connected with the miner diameter end of reduced pipe 28, the bigger diameter end of reduced pipe 28 is connect with arc hose 25, second voltage regulation valve 29 it is another
End connects one end of flowmeter 32 by the second tracheae 36 of connection, and the other end of flowmeter 32 passes through the first tracheae 35 and level-one tune
One end of pressure valve 31 connects, and the other end of level-one pressure regulator valve 31 is connected to air inlet tracheae 37, and test gas is entered by air inlet tracheae 37
The first tracheae 35, the second tracheae 36, reduced pipe 28 is passed sequentially through to enter in arc hose 25.
Level-one pressure regulator valve 31 is fixed on gas circuit support frame 33 by the first link block 45, and flowmeter 32 passes through the second connection
Block 46 is fixed on gas circuit support frame 33, and second voltage regulation valve 29 is fixed on gas circuit support frame 33 by third link block 47.
The specific implementation course of work of the present apparatus is as follows:
1) tested valve 42 is installed in tested valve support plate 54 and is accurately positioned by locating slot 17；
2) cylinder rod of the lower air cylinder 19 of clamping tooling 49 moves downward, and down-pressed pole 38 is driven to compress tested valve 42；
3) the preceding push cylinder 26 of sealing frock 50 is pushed forward, and entrance working plate 23 is driven to slide along guide rail 24 to close to tested valve 42
It is dynamic, after entrance working plate 23 contacts tested valve 42, drive tested valve 42 mobile towards outlet working plate 16, preceding push cylinder 26 continues
It is pushed forward until entrance pad 22 and outlet gasket 15 respectively seal the both ends of tested valve 42；
4) gas source tooling 51 is passed through test gas by air inlet tracheae 37, by 29 pressure regulation of level-one pressure regulator valve 31 and second voltage regulation valve
Test gas is reduced to 3kpa or so pressure afterwards, hereafter starts real-time monitoring flowmeter 32, first pressure sensor 14 and second pressure
The numerical value of sensor 52；
5) change the revolving speed of blower 3 in a manner of PWM modulation, gas goes out after the reducing draw 5 in tested valve 42 in blower 3
Mouth side generates subnormal ambient, and the middle section diameter of the reducing draw 5 is smaller, and the negative pressure value of tested valve 42 is bigger, passes through and changes blower 3
Revolving speed and then the negative pressure value for adjusting tested valve 42, for tested valve 42 after internal pressure change, internal valve port automatic pressure regulation is big
It is small, thus change uninterrupted, 42 front and back pressure value of equipment time recording flow value and tested valve；
6) control system automatically generates test curve, and makes a decision automatically, is then shut off gas source, stops 19 He of lower air cylinder
Preceding 26 actuation of push cylinder, test terminate.
By above-mentioned implementation process as it can be seen that the present invention can complete the accurate test of zero-pressure valve, convenient, the degree of automation is operated
Height, data exact correspondence are good.
Claims (9)
1. a kind of zero-pressure valve test device, it is characterised in that: including be sequentially arranged along straight line blower tooling (48), clamping tooling
(49), sealing frock (50) and gas source tooling (51), blower tooling (48) connect clamping tooling (49) by outlet straight tube (13),
It is equipped on clamping tooling (49) tested valve (42), the side of tested valve (42) is connect with sealing frock (50), sealing frock
(50) pass through arc hose (25) connection gas source tooling (51).
2. a kind of zero-pressure valve test device according to claim 1, it is characterised in that:
The blower tooling (48) includes the blower (3) being fixed on blower support base (9), and the side of blower (3) is equipped with
The extension air hose (2) being connected to blower (3) air outlet extends on air hose (2) and is equipped with anemobiagraph (1), the other side of blower (3)
Equipped with inlet tube (4), inlet tube (4) is connected with the reducing draw (5) and loudspeaker air inlet (12) in turn along own axes direction, different
The diameter of the diameter draw (5) middle section part is less than the diameter at the reducing draw (5) both ends, under the reducing draw (5) is at the diameter minimum
End aperture make the reducing draw (5) be three-port structure, the reducing draw (5) lower end tapping successively with outlet connecting tube (10) and
Bridge piece (11) connection, bridge piece (11) are connect with outlet straight tube (13)；
The clamping tooling (49) includes outlet working plate (16), the tested valve (42) being mounted on clamping tooling bottom plate (18)
With lower air cylinder (19), the side for exporting working plate (16) is equipped with support frame (39), and outlet working plate (16) passes through support frame
(39) position on clamping tooling bottom plate (18) close to blower tooling (48), the upper end warp of outlet working plate (16) are vertically fixed to
First pressure sensor erection joint (53) is equipped with first pressure sensor (14), and outlet working plate (16) through-thickness is opened
There is through-hole as exit passageway, one end of exit passageway is connected with outlet straight tube (13), and the other end of exit passageway is equipped with annular
Outlet gasket (15)；The other side of outlet working plate (16) is equipped with tested valve (42), and tested valve (42) is mounted on tested valve
In support plate (54), tested valve support plate (54) is provided with the locating slot (17) with the cooperation assembly of tested valve (42) bottom, tested valve
(42) along locating slot (17) transverse shifting until the one end and outlet of tested valve (42) after being installed on tested valve support plate (54)
Gasket (15) contact sealing, the rear of tested valve (42) are equipped with lower air cylinder (19), and lower air cylinder (19) is solid by supporting element
It is scheduled on clamping tooling bottom plate (18), the cylinder rod of lower air cylinder (19), which passes perpendicularly through, pushes support plate (20) towards clamping tooling bottom
Plate (18) stretches out, and the end that cylinder rod is stretched out is equipped with horizontally disposed down-pressed pole (38) facing forward, and the cylinder rod of lower air cylinder (19) is continuous
It stretches out so that down-pressed pole (38) compresses tested valve (42)；
The sealing frock (50) includes entrance working plate (23) and the preceding push cylinder being mounted on sealing frock bottom plate (27)
(26), sealing frock bottom plate (27) is equipped with guide rail (24) close to the side of clamping tooling (49), the lower end of entrance working plate (23)
It is slided on guide rail (24) by sliding block (40), the side of entrance working plate (23) is equipped with preceding push cylinder (26), preceding push cylinder
(26) cylinder rod is connected with the lower part of entrance working plate (23), and the cylinder rod of preceding push cylinder (26), which is stretched out, pushes entrance working plate (23)
It is slided in guide rail (24), the cylinder rod end of preceding push cylinder (26), which is equipped with, is pushed forward air cylinder fixed plate perpendicular to sealing frock bottom plate (27)
(44), preceding push cylinder (26) is by being pushed forward air cylinder fixed plate (44) fixed on sealing frock bottom plate (27)；Entrance working plate
(23) upper end is equipped with second pressure sensor (52) through second pressure sensor erection joint (41), entrance working plate (23)
Through-thickness is provided with through-hole as access road, the exit passageway coaxial line of access road and clamping tooling (49), entrance
The one end in channel is equipped with the entrance pad (22) of annular, preceding push cylinder (26) push entrance working plate (23) on guide rail (24) to
Direction close to tested valve (42) is slided, so that entrance pad (22) contacts and seal the other end of tested valve (42), entrance is logical
The other end in road connects arc hose (25)；
The gas source tooling (51) includes gas circuit bottom plate (34), level-one pressure regulator valve (31), flowmeter (32) and second voltage regulation valve
(29), it is fixed with gas circuit support frame (33) on gas circuit bottom plate (34) by gas circuit backplanes support block (43), gas circuit support frame (33)
On level-one pressure regulator valve (31), flowmeter (32) and second voltage regulation valve (29), second voltage regulation valve (29) are successively equipped at intervals with along straight line
One end be connected with the miner diameter end of reduced pipe (28), the bigger diameter end of reduced pipe (28) is connect with arc hose (25), second voltage regulation
The other end of valve (29) connects the one end of flowmeter (32) by connection the second tracheae (36), and the other end of flowmeter (32) passes through
First tracheae (35) is connect with one end of level-one pressure regulator valve (31), and the other end of level-one pressure regulator valve (31) is connected to air inlet tracheae
(37), test gas is entered by air inlet tracheae (37) passes sequentially through the first tracheae (35), the second tracheae (36), reduced pipe (28) entrance
In arc hose (25).
3. a kind of zero-pressure valve test device according to claim 2, it is characterised in that: the blower (3) is fixed on wind
On machine mounting rack (6), fan installation frame (6) is mounted on blower support plate (7), and blower support plate (7) passes through multiple blower branch
Dagger (8) is fixed on blower support base (9).
4. a kind of zero-pressure valve test device according to claim 2, it is characterised in that: the tested valve support plate (54)
It is fixed on clamping tooling bottom plate (18) by supporting block (30).
5. a kind of zero-pressure valve test device according to claim 2, it is characterised in that: the supporting element includes pushing branch
Fagging (20) and pushing support leg (21), lower air cylinder (19), which is fixed on, to be pushed on support plate (20), and it is logical to push support plate (20)
The pushing support leg (21) that two are arranged symmetrically is crossed to be fixed on clamping tooling bottom plate (18).
6. a kind of zero-pressure valve test device according to claim 2, it is characterised in that: the level-one pressure regulator valve (31) is logical
The first link block (45) are crossed fixed on gas circuit support frame (33), flowmeter (32) is fixed to gas circuit by the second link block (46)
On support frame (33), second voltage regulation valve (29) is fixed on gas circuit support frame (33) by third link block (47).
7. being applied to a kind of zero-pressure valve test method of any described device of claim 1-6, it is characterised in that including following step
It is rapid:
1) tested valve (42) is installed on tested valve support plate (54) and is positioned；
2) the cylinder rod actuation of the lower air cylinder (19) of clamping tooling (49) makes down-pressed pole (38) to compress tested valve (42)；
3) the preceding push cylinder (26) of sealing frock (50) is pushed forward, and drives entrance working plate (23) along guide rail (24) to close to tested valve
(42) it slides, entrance working plate (23) then drives tested valve (42) mobile towards outlet working plate (16), preceding push cylinder (26)
Continue to be pushed forward until entrance pad (22) and outlet gasket (15) respectively seal the both ends of tested valve (42)；
4) gas source tooling (51) is passed through test gas by air inlet tracheae (37), by level-one pressure regulator valve (31) and second voltage regulation valve (29)
Measuring air pressure power declines after pressure regulation, hereafter starts real-time monitoring flowmeter (32), first pressure sensor (14) and second pressure
The numerical value of sensor (52)；
5) change the revolving speed of blower (3) in a manner of PWM modulation, blower (3) interior gas is after the reducing draw (5) in tested valve
(42) outlet side generates subnormal ambient, and the middle section diameter of the reducing draw (5) is smaller, and the negative pressure value of tested valve (42) is bigger, passes through
Change the revolving speed of blower (3) and then adjusts the negative pressure value of tested valve (42), after the internal pressure variation of tested valve (42), inner valve
Mouth adjusts pressure size, thus change uninterrupted, pressure value before and after equipment time recording flow value and tested valve (42)；
6) control system generates test curve, and makes a decision automatically, is then shut off gas source, stops lower air cylinder (19) and is pushed forward gas
Cylinder (26) actuation, test terminate.
8. a kind of zero-pressure valve test method according to claim 7, it is characterised in that:
In the step 1), tested valve (42) are accurately positioned by locating slot (17) and are installed on tested valve support plate (54).
9. a kind of zero-pressure valve test method according to claim 7, it is characterised in that:
In the step 4), gas is tested after level-one pressure regulator valve (31) and second voltage regulation valve (29) pressure regulation and is reduced to 3kpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811253556.6A CN109269796B (en) | 2018-10-25 | 2018-10-25 | Zero-pressure valve testing device and testing method |
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| Application Number | Priority Date | Filing Date | Title |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689311A (en) * | 2022-03-16 | 2022-07-01 | 杭州中溯智能科技有限公司 | Automatic testing method for proportional valve |
| CN115575105A (en) * | 2022-09-23 | 2023-01-06 | 河南省锅炉压力容器安全检测研究院 | Pressure-bearing testing device of pressure valve |
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| CN205067065U (en) * | 2015-09-22 | 2016-03-02 | 江苏美大电器有限公司 | Gas cooking utensils surge damping valve flow test device |
| CN205843942U (en) * | 2016-07-13 | 2016-12-28 | 上海市特种设备监督检验技术研究院 | A kind of multistation pressure regulator valve fatigue machine |
| CN205958244U (en) * | 2016-07-28 | 2017-02-15 | 煤炭科学技术研究院有限公司 | Super large flow relief valve test device |
| CN208833501U (en) * | 2018-10-25 | 2019-05-07 | 哈尔滨工程大学 | A kind of zero-pressure valve test device |
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| CN205067065U (en) * | 2015-09-22 | 2016-03-02 | 江苏美大电器有限公司 | Gas cooking utensils surge damping valve flow test device |
| CN205843942U (en) * | 2016-07-13 | 2016-12-28 | 上海市特种设备监督检验技术研究院 | A kind of multistation pressure regulator valve fatigue machine |
| CN205958244U (en) * | 2016-07-28 | 2017-02-15 | 煤炭科学技术研究院有限公司 | Super large flow relief valve test device |
| CN208833501U (en) * | 2018-10-25 | 2019-05-07 | 哈尔滨工程大学 | A kind of zero-pressure valve test device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114689311A (en) * | 2022-03-16 | 2022-07-01 | 杭州中溯智能科技有限公司 | Automatic testing method for proportional valve |
| CN114689311B (en) * | 2022-03-16 | 2022-12-20 | 杭州中溯智能科技有限公司 | Automatic testing method for proportional valve |
| CN115575105A (en) * | 2022-09-23 | 2023-01-06 | 河南省锅炉压力容器安全检测研究院 | Pressure-bearing testing device of pressure valve |
| CN115575105B (en) * | 2022-09-23 | 2023-09-01 | 河南省锅炉压力容器安全检测研究院 | Pressure-bearing testing device of pressure valve |
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| CN109269796B (en) | 2023-10-24 |
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