CN111964900A - Multi-channel pressure setting test bench - Google Patents
Multi-channel pressure setting test bench Download PDFInfo
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- CN111964900A CN111964900A CN202010862789.7A CN202010862789A CN111964900A CN 111964900 A CN111964900 A CN 111964900A CN 202010862789 A CN202010862789 A CN 202010862789A CN 111964900 A CN111964900 A CN 111964900A
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- 239000003921 oil Substances 0.000 claims description 79
- 239000010720 hydraulic oil Substances 0.000 claims description 21
- 210000004907 gland Anatomy 0.000 claims description 6
- 239000000446 fuel Substances 0.000 description 8
- 238000001514 detection method Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 2
- 230000010354 integration 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
- G01M13/003—Machine valves
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- General Physics & Mathematics (AREA)
- Control Of Fluid Pressure (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The invention discloses a multi-path pressure setting test bench which comprises a test bench, wherein more than two pneumatic oil pressure devices and oil pressure valves are arranged on the test bench, and the pneumatic oil pressure devices and the oil pressure valves are connected with a pressure gauge through pipelines. The invention can carry out pressure test on more than two pneumatic oil pressure devices and oil pressure valves through the test board structure, and adjust the output pressure of the pneumatic oil pressure devices and the oil pressure valves according to the pressure test value, thereby greatly saving the time for detecting and adjusting equipment.
Description
Technical Field
The invention relates to the technical field of detection, in particular to a multi-channel pressure setting test bench.
Background
At present, a single pressure gauge detects a single pressure valve for the output pressure detection and setting of the pressure valve, and a pressure setting and testing device integrating multiple pressure valves is lacked.
The Chinese invention patent No. 201811008133.8 discloses a detection device for self-adapting fuel pressure valves with different specifications, which comprises a frame and an accommodating plate fixedly arranged on the frame, wherein an accommodating groove for accommodating the fuel pressure valve is arranged on the accommodating plate, and the oil outlet end of the fuel pressure valve penetrates through the accommodating groove and extends to be arranged outside the accommodating groove; positioning components which are fixedly arranged on the containing plate and used for positioning the fuel pressure valve are arranged on two sides of the fuel pressure valve, and a control component which is fixedly arranged on the rack and used for controlling the pretightening force of the fuel pressure valve is arranged above the fuel pressure valve; the rack is also provided with a detection assembly for detecting the oil outlet end of the fuel pressure valve. The technical scheme mainly solves the problem of pressure detection precision, and does not consider the problems of pressure setting and testing of various different devices.
Disclosure of Invention
The invention provides a multi-path pressure setting test bench which is simple in structure and suitable for setting and testing the pressure of a plurality of pressure valves.
A multi-path pressure setting test bench comprises a test bench, wherein more than two pneumatic oil pressure devices and oil pressure valves are arranged on the test bench, and the pneumatic oil pressure devices and the oil pressure valves are connected with a pressure gauge through pipelines; the pneumatic oil pressure device and the oil pressure valve are provided with pressure setting and adjusting devices; the pneumatic oil pressure device comprises an air inlet hole, the air inlet hole is positioned on a cavity cover, the cavity cover is matched with the upper surface of a pneumatic piston to form a first air cavity, the periphery of the lower surface of the pneumatic piston is connected with an air cavity spring, the middle of the lower surface of the pneumatic piston is matched and connected with a first valve seat arranged in a valve body of the pneumatic oil pressure device, and the first valve seat passes through a first hydraulic oil pipe; a second hydraulic oil pipe is arranged in a valve body of the pneumatic oil pressure device on the lower side of the first valve seat, the second hydraulic oil pipe is connected with a pressure gauge through a connecting pipe, and a pressure setting and adjusting device of the pneumatic oil pressure device is arranged between the first hydraulic oil pipe and the connecting pipe; and the pressure setting and adjusting device of the pneumatic oil pressure device is an adjusting screw rod for controlling the pressure in the first hydraulic oil pipe.
The oil pressure valve comprises an upper cavity and a lower cavity, a piston is arranged between the upper cavity and the lower cavity, the middle of the piston is connected with a shaft rod through a gland, a pressure spring is sleeved on the periphery of the gland, the pressure spring is connected with a valve seat, and the upper side of the valve seat is sleeved with the shaft rod through a valve cap; an oil outlet pipe communicated with the lower cavity is arranged in the valve seat, the oil outlet pipe is communicated with an oil outlet joint, and the oil outlet joint is connected with a pressure gauge arranged on a pressure gauge seat; and the upper cavity is provided with a pressure setting and adjusting device of an oil pressure valve.
The pressure setting and adjusting device of the oil pressure valve comprises a valve pipe connected with a piston, a blind hole is arranged in the valve pipe, a through hole is transversely formed in the blind hole and communicated with the upper cavity through a balance hole, and the top of the valve pipe is connected with an adjusting nut through an adjusting spring; the periphery of the valve pipe is hermetically connected with the cavity wall of the upper cavity.
The bottom of the valve seat is connected with an oil tank, and a one-way pressure release valve is arranged between the valve seat and the oil tank.
And the lower surface of the pneumatic piston and the upper surface of the valve body of the pneumatic oil pressure device form a second pressure cavity, and the second pressure cavity is communicated with the first hydraulic oil pipe.
From the above embodiments, it is apparent that the present invention has the following advantages:
1. the test bench can carry out pressure test to more than two pneumatic oil pressure device and oil pressure valve to according to the output pressure of pressure test numerical value regulation pneumatic oil pressure device and oil pressure valve.
2. The pneumatic oil pressure device comprises a first output pressure generated by a first hydraulic oil pipe and a second output pressure output by a second hydraulic oil pipe, the first output pressure and the second output pressure are combined to generate comprehensive output pressure, the comprehensive output pressure is tested by a pressure gauge, the pressure is adjusted by an adjusting screw, and the integration of setting and detection is realized.
The pressure setting and adjusting device of the oil pressure valve is arranged on the upper cavity, the pressure balance between the upper cavity and the pressure setting and adjusting device is balanced through a valve pipe structure, the lower pressure, namely the output pressure of the lower cavity, is adjusted through the adjusting nut, and the output pressure is observed through the pressure gauge.
Drawings
FIG. 1 is a schematic structural diagram of a multi-channel pressure setting test bench according to the present invention;
FIG. 2 is a schematic cross-sectional view of the multi-channel pressure setting test table according to the present invention;
FIG. 3 is a pressure setting adjusting device of the oil pressure valve in the invention;
fig. 4 is a schematic cross-sectional structure diagram of the pneumatic oil pressure device in the invention.
Detailed Description
The multi-path pressure setting test bench shown in fig. 1-4 comprises a test bench 49, wherein more than two pneumatic oil pressure devices 7 and oil pressure valves 4 are arranged on the test bench 49, and the pneumatic oil pressure devices 7 and the oil pressure valves 4 are connected with a pressure gauge 2 through pipelines to realize a multi-path pressure test function.
Preferably, the pneumatic hydraulic device 7 and the hydraulic pressure valve 4 are each provided with a pressure setting adjustment device. The pneumatic oil pressure device comprises an air inlet hole 24, the air inlet hole 24 is located on a cavity cover 33, the cavity cover 33 is matched with the upper surface of a pneumatic piston 35 to form a first air cavity 34, the periphery of the lower surface of the pneumatic piston 35 is connected with an air cavity spring 47, the middle of the lower surface of the pneumatic piston 35 is matched and connected with a first valve seat 48 installed in a valve body 52 of the pneumatic oil pressure device, and the first valve seat 48 passes through a first hydraulic oil pipe 46. A second hydraulic oil pipe 45 is arranged in a valve body 52 of the pneumatic oil pressure device on the lower side of the first valve seat 48, the second hydraulic oil pipe 45 is connected with the pressure gauge 2 through a connecting pipe 5, and a pressure setting and adjusting device of the pneumatic oil pressure device 7 is arranged between the first hydraulic oil pipe 46 and the connecting pipe 5. The pressure setting adjustment device of the pneumatic oil pressure device 7 is an adjustment screw 37 that controls the pressure in the first hydraulic oil pipe 46. The output pressure of the pneumatic oil pressure device 7 is adjusted to be the output pre-pressing pressure of the second hydraulic oil pipe 45, when the air inlet 24 belongs to high pressure air pressure, the lower surface of the pneumatic piston 35 and the upper surface of the valve body 52 of the pneumatic oil pressure device are compressed to form a second pressure cavity 60, the output pressure of the first hydraulic oil pipe 46 is improved, the pressure is set and adjusted by the pressure setting and adjusting device of the pneumatic oil pressure device 7 through the observation of the pressure gauge 2, and finally the pressure setting of the pneumatic oil pressure device 7 is completed.
The oil pressure valve 4 preferably comprises an upper cavity 11 and a lower cavity 22, a piston 13 is arranged between the upper cavity 11 and the lower cavity 22, a shaft rod 9 is connected to the middle of the piston 13 through a gland 14, a pressure spring 1 is sleeved on the periphery of the gland 14, the pressure spring 1 is connected with a valve seat 16, and the shaft rod 9 is sleeved on the upper side of the valve seat 16 through a valve cap 15. An oil outlet pipe 51 communicated with the lower cavity 22 is arranged in the valve seat 16, the oil outlet pipe 51 is communicated with an oil outlet joint 3, the oil outlet joint 3 is connected with a pressure gauge 2 arranged on the pressure gauge seat 23, and the oil outlet pressure of the oil pressure valve 4 is detected through the pressure gauge 2. The cavity 11 is provided with a pressure setting and adjusting device of the oil pressure valve 4, and the oil outlet pressure of the oil pressure valve 4 is adjusted.
The pressure setting and adjusting device of the oil pressure valve 4 is preferably structurally characterized by comprising a valve tube 27 connected with a piston 13, a blind hole 32 is formed in the valve tube 27, a through hole 29 is transversely formed in the blind hole 32, the through hole 29 is communicated with the upper cavity 11 through a balance hole 31, and the top of the valve tube 27 is connected with an adjusting nut 25 through an adjusting spring 26 to adjust the output pressure of the lower cavity 22.
The valve tube 27 is preferably constructed such that the outer periphery thereof is hermetically sealed to the chamber wall 30 of the upper chamber 11. The bottom of the valve seat 16 is connected with an oil tank 50, and a one-way relief valve 17 is arranged between the valve seat 16 and the oil tank 50, so that the equipment is prevented from being damaged due to overhigh pressure of the oil pressure valve 4.
Claims (5)
1. A multichannel pressure setting test bench, includes test bench (49), its characterized in that: the test bench (49) is provided with more than two pneumatic oil pressure devices (7) and oil pressure valves (4), and the pneumatic oil pressure devices (7) and the oil pressure valves (4) are connected with the pressure gauge (2) through pipelines; the pneumatic oil pressure device (7) and the oil pressure valve (4) are respectively provided with a pressure setting and adjusting device; the pneumatic oil pressure device comprises an air inlet hole (24), the air inlet hole (24) is located on a cavity cover (33), the cavity cover (33) is matched with the upper surface of a pneumatic piston (35) to form a first air cavity (34), the periphery of the lower surface of the pneumatic piston (35) is connected with an air cavity spring (47), the middle of the lower surface of the pneumatic piston (35) is matched and connected with a first valve seat (48) installed in a valve body (52) of the pneumatic oil pressure device, and the first valve seat (48) passes through a first hydraulic oil pipe (46); a second hydraulic oil pipe (45) is arranged in a valve body (52) of the pneumatic oil pressure device on the lower side of the first valve seat (48), the second hydraulic oil pipe (45) is connected with the pressure gauge (2) through a connecting pipe (5), and a pressure setting and adjusting device of the pneumatic oil pressure device (7) is arranged between the first hydraulic oil pipe (46) and the connecting pipe (5); the pressure setting and adjusting device of the pneumatic oil pressure device (7) is an adjusting screw rod (37) for controlling the pressure in the first hydraulic oil pipe (46).
2. A multi-way pressure setting test bench as defined in claim 1, wherein: the oil pressure valve (4) comprises an upper cavity (11) and a lower cavity (22), a piston (13) is arranged between the upper cavity (11) and the lower cavity (22), the middle of the piston (13) is connected with a shaft lever (9) through a gland (14), the periphery of the gland (14) is sleeved with a pressure spring (1), the pressure spring (1) is connected with a valve seat (16), and the upper side of the valve seat (16) is sleeved with the shaft lever (9) through a valve cap (15); an oil outlet pipe (51) communicated with the lower cavity (22) is arranged in the valve seat (16), the oil outlet pipe (51) is communicated with an oil outlet joint (3), and the oil outlet joint (3) is connected with a pressure gauge (2) arranged on a pressure gauge seat (23); and a pressure setting and adjusting device of the oil pressure valve (4) is arranged on the upper cavity (11).
3. A multi-way pressure setting test bench as defined in claim 2, wherein: the pressure setting and adjusting device of the oil pressure valve (4) comprises a valve pipe (27) connected with a piston (13), a blind hole (32) is formed in the valve pipe (27), a through hole (29) is transversely formed in the blind hole (32), the through hole (29) is communicated with an upper cavity (11) through a balance hole (31), and the top of the valve pipe (27) is connected with an adjusting nut (25) through an adjusting spring (26); the periphery of the valve pipe (27) is hermetically connected with the cavity wall (30) of the upper cavity (11).
4. A multi-way pressure setting test bench as defined in claim 2, wherein: the bottom of the valve seat (16) is connected with an oil tank (50), and a one-way pressure release valve (17) is arranged between the valve seat (16) and the oil tank (50).
5. A multi-way pressure setting test bench as defined in claim 1, wherein: and the lower surface of the pneumatic piston (35) and the upper surface of the pneumatic oil pressure device valve body (52) form a second pressure cavity (60), and the second pressure cavity (60) is communicated with the first hydraulic oil pipe (46).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010862789.7A CN111964900B (en) | 2020-08-25 | 2020-08-25 | Multipath pressure setting test bench |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010862789.7A CN111964900B (en) | 2020-08-25 | 2020-08-25 | Multipath pressure setting test bench |
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| CN111964900A true CN111964900A (en) | 2020-11-20 |
| CN111964900B CN111964900B (en) | 2023-11-24 |
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| CN111964900B (en) | 2023-11-24 |
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