CN210571335U

CN210571335U - Pulse test bed for cooling water pipe

Info

Publication number: CN210571335U
Application number: CN201921638190.4U
Authority: CN
Inventors: 荀洪继; 瞿晓刚; 邢卫东; 高君録; 张金生; 姜海洋
Original assignee: Shenyang Ziweiheng Detection Equipment Co ltd
Current assignee: Shenyang Ziweiheng Detection Equipment Co ltd
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-05-19
Anticipated expiration: 2029-09-29

Abstract

The utility model relates to a cooling water pipe pulse test bed, the outlet of the oil source box body is connected with the inlet of a pressurizing pump, the outlet of the pressurizing pump is connected with the first inlet of a servo valve, the first outlet of the servo valve is connected with a servo hydraulic cylinder, the servo hydraulic cylinder is also connected with the second inlet of the servo valve, and the second outlet of the servo valve is connected with the inlet of the oil source box body; one side of servo cylinder's pressurization end is connected with the entry of energy storage ware and first stop valve, the opposite side of servo cylinder's pressurization end is connected with the export of high low temperature unit, the entry linkage of high low temperature unit has the export of circulating pump, the export at the medium case is connected to the other end of stop valve, the export of the entry linkage second stop valve of medium case, the export of the entry linkage environment case of second stop valve, the export of the entry linkage first stop valve of environment case, the test bench pipeline is equipped with temperature sensor and pressure sensor. The utility model discloses can measure pressure and temperature, control is convenient, and sealing performance is good.

Description

Pulse test bed for cooling water pipe

Technical Field

The utility model relates to a high microthermal pressure pulse test platform of medium environment specifically indicates a hydraulic pressure pipe that uses the coolant liquid as the medium tests fatigue life's cooling water pipe pulse test platform under different temperature pressure.

Background

In the industries of automobiles, chemical engineering, universities, laboratories, scientific research institutions, government offices, aerospace and the like, pulse experiments of products such as rubber hoses, automobile brake pipes, automobile air conditioners, radiator hoses, evaporators, condensers and the like are frequently required. However, the test items of the detection equipment such as the cooling water pipe and the like which are commonly used in China are often single, and only pressure or temperature pulse fatigue tests can be carried out, so that repeated tests are caused, and the research and development period is prolonged. The whole existing equipment cannot stably supply pressure and absorb pulses, so that pressure fluctuation in a detection pipeline is large, and further, the measurement result is inaccurate. The equipment for regulating pressure or absorbing pulse in the existing product is not good in sealing, the oil leakage phenomenon often occurs if high-frequency pulse exists, and the oil leakage phenomenon is more likely to occur if high-temperature and low-temperature difference exists in the medium in the management of the whole pulse test.

SUMMERY OF THE UTILITY MODEL

Purpose of the utility model

The problems that measurement is single, pressure fluctuation causes inaccuracy in measurement, high-frequency pulse and high-low temperature difference oil leakage in the prior art are solved. The utility model provides a convenient to use, pressure parameter acquisition degree of accuracy are high, can the pressure regulating and can measure pipeline temperature's cooling water pipe pulse test platform.

Technical scheme

The utility model provides a condenser tube pulse test bench which characterized in that: the outlet of the oil source box body is connected with the inlet of a pressurizing pump, the outlet of the pressurizing pump is connected with a first inlet of a servo valve, the first outlet of the servo valve corresponds to the first inlet of the servo valve, the first outlet of the servo valve is connected with the actuating end at the lower side of a piston rod in a servo hydraulic cylinder, the actuating end at the upper side of the piston rod in the servo hydraulic cylinder is connected with a second inlet of the servo valve, the second inlet of the servo valve corresponds to the second outlet of the servo valve, and the second outlet of the servo valve is connected with the inlet of the oil source box body; the pressurizing end of the servo hydraulic cylinder is provided with two passage ports, the passage port on one side of the pressurizing end of the servo hydraulic cylinder is simultaneously connected with inlets of an energy accumulator and a first stop valve, the passage port on the other side of the pressurizing end of the servo hydraulic cylinder is connected with an outlet of a high-low temperature unit, the inlet of the high-low temperature unit is connected with an outlet of a circulating pump, the inlet of the circulating pump is connected with a filter, an inlet of the filter is connected with a stop valve, the other end of the stop valve is connected with an outlet of a medium box, the inlet of the medium box is connected with an outlet of a second stop valve, the inlet of the second stop valve is connected with an outlet of an environment box, a pipeline connected between the inlet of the medium box and the outlet of the second stop valve is provided with a temperature sensor, and a pipeline connected between the servo hydraulic cylinder and the high-.

And a plurality of joints for connecting the test pieces in parallel are arranged at the inlet and the outlet in the environment box.

And cooling liquid is filled in the medium box.

The servo hydraulic cylinder comprises a servo valve block, a lower end cover, a cylinder barrel, an upper end cover, a piston rod and a transformation cylinder barrel, wherein the upper end cover and the lower end cover are respectively fixed on the upper side and the lower side of the cylinder barrel, the transformation cylinder barrel is fixed on the upper side of the upper end cover, the inner diameters of the upper end cover and the lower end cover are smaller than that of the cylinder barrel, the upper end of the piston rod penetrates through the lower end cover, the cylinder barrel and the upper end cover, the diameter of the middle part of the piston rod is larger than that of the upper part and the lower part, a cavity gap between the middle part of the piston rod and the upper end cover in the cylinder barrel is an upper actuating end, a cavity between the middle part of the piston rod and the lower end cover is a lower actuating end, the cavity between the upper end of the piston rod and the transformation cylinder barrel is a transformation end, the.

The lower end of the piston rod is provided with an end pressing plate, the middle of the end pressing plate is provided with a through hole, and a magnetic ring and a magnetic isolation gasket are fixed in the through hole through a screw c.

And the servo valve block is communicated with the pore channel of the upper actuating end and the pore channel of the servo valve block communicated with the lower actuating end, and a detachable flushing valve plate is fixed outside the pore channel of the servo valve block communicated with the lower actuating end through a screw a.

The upper end cover is provided with an oil cylinder oil drain hole which is communicated with the upper actuating end and is sealed by a screw plug.

A dustproof ring and a Stent seal are arranged between the lower end cover and the piston rod, a Glare ring b for the piston rod is arranged between the cylinder barrel and the piston rod, an O-shaped ring b is arranged between the cylinder barrel and the upper end cover, a Glare ring a for the piston rod and a check ring a are arranged between the upper end cover and the piston rod, an O-shaped ring d is arranged between the servo valve block and the flushing valve plate, an O-shaped ring c is arranged between the servo valve block and the cylinder barrel, and an O-shaped ring a and a check ring b are arranged between the upper end cover and.

Advantages and effects

The utility model discloses can measure pressure and temperature, the multiple department is equipped with the stop valve, and control is convenient, and servo pneumatic cylinder provides pressure and sealing performance is good for entire system.

Drawings

FIG. 1 is a schematic view of a cooling water pipe pulse test bed system connection structure;

FIG. 2 is a schematic structural diagram of a servo hydraulic cylinder of a cooling water pipe pulse test bed;

FIG. 3 is a schematic view of a D-D section structure in FIG. 2 of a servo hydraulic cylinder of the cooling water pipe pulse test bed.

Description of reference numerals: 1. the oil-gas separator comprises a dust ring, 2 screw plugs, 3 Stent seals, 4 piston rods, 5 Gray rings a and 5 piston rods, 6 servo valve blocks, 7 end pressing plates, 8 magnetic isolation gaskets, 9 lower end covers, 10 cylinder barrels, 11 upper end covers, 12 piston rods, 13 flushing valve plates, 14 pressure transformation cylinder barrels, 15O-shaped rings a and 16O-shaped rings b and 17O-shaped rings c and 18 screws a and 19 screws b and 20 screws c and 21 screws d and 22 screws e and 23O-shaped rings d and 24 magnetic rings, 25 check rings a and 26 check rings b and 27 upper actuating ends and 28 lower actuating ends and 29 pressure transformation ends, 101 medium boxes, 102 stop valves, 103 filters, 104 circulating pumps, 105 high-temperature and low-temperature units, 106 energy accumulators, 107, pressure sensors, 108 servo hydraulic cylinders, 109 servo valves, 110 oil source boxes and 111 pressurizing pumps, 112. Test piece, 113, environment box, 114, first stop valve, 115, second stop valve, 116, temperature sensor.

Detailed Description

The invention will be further explained with reference to the drawings:

as shown in fig. 1, in a cooling water pipe pulse test bed, an outlet of an oil source tank 110 is connected with an inlet of a pressurizing pump 111, an outlet of the pressurizing pump 111 is connected with a first inlet of a servo valve 109, a first outlet of the servo valve 109 corresponds to the first inlet of the servo valve 109, the first outlet of the servo valve 109 is connected with a lower actuating end of a piston rod 12 in a servo hydraulic cylinder 108, an upper actuating end of the piston rod 12 in the servo hydraulic cylinder 108 is connected with a second inlet of the servo valve 109, a second inlet of the servo valve 109 corresponds to a second outlet of the servo valve 109, and the second outlet of the servo valve 109 is connected with an inlet of the oil source tank 110; the pressurizing end of the servo hydraulic cylinder 108 is provided with two passage ports, one passage port on one side of the pressurizing end of the servo hydraulic cylinder 108 is simultaneously connected with inlets of an energy accumulator 106 and a first stop valve 114, the other passage port on the other side of the pressurizing end of the servo hydraulic cylinder 108 is connected with an outlet of a high-low temperature unit 105, the inlet of the high-low temperature unit 105 is connected with an outlet of a circulating pump 104, the inlet of the circulating pump 104 is connected with a filter 103, the inlet of the filter 103 is connected with a stop valve 102, the other end of the stop valve 102 is connected with the outlet of a medium box 101, the stop valve 102 is a manual valve, the inlet of the medium box 101 is connected with the outlet of a second stop valve 115, the inlet of the second stop valve 115 is connected with the outlet of an environment box 113, the inlet of the environment box 113 is connected with the. A pipe connected between an inlet of the medium tank 101 and an outlet of the second cut-off valve 115 is provided with a temperature sensor 116, and a pipe connected between the servo hydraulic cylinder 108 and the high and low temperature unit 105 or a pipe connected between the servo hydraulic cylinder 108 and the first cut-off valve 114 is provided with a pressure sensor 107. The medium box is filled with cooling liquid.

As shown in fig. 2, the servo hydraulic cylinder 108 includes a servo valve block 6, a lower end cover 9, a cylinder 10, an upper end cover 11, a piston rod 12 and a transformation cylinder 14, the upper and lower sides of the cylinder 10 are respectively fixed with the upper end cover 11 and the lower end cover 9, the upper side of the upper end cover 11 is fixed with the transformation cylinder 14, the inner diameters of the upper end cover 11 and the lower end cover 9 are smaller than the inner diameter of the cylinder 10, the upper end of the piston rod 12 passes through the lower end cover 9, the cylinder 10 and the upper end cover 11, the diameter of the middle part of the piston rod 12 is larger than the diameter of the upper and lower parts, the cavity gap between the middle part of the piston rod 12 and the upper end cover 11 and located in the cylinder 10 is an upper actuating end 27, the cavity gap between the middle part of the piston rod 12 and the lower end cover 9 and located in the cylinder 10 is a lower actuating end 28, the cavity between the upper end of the piston rod 12 and the transformation, the servo valve block 6 is also provided with a passage communicating with the lower actuating end 28. The pressure swing cylinder 14, the upper end cover 11 and the cylinder 10 are fixed together through a screw b 19, the end cover 9 and the cylinder 10 are fixed together through a screw d 21, and the servo valve block 6 and the cylinder 10 are fixed together through a screw e 22. The lower end of the piston rod 12 is provided with an end pressing plate 7, the middle of the end pressing plate 7 is provided with a through hole, the through hole is fixedly provided with a magnetic ring 24 and a magnetic isolation gasket 8 through a screw c 20, when a problem occurs in the servo hydraulic cylinder 108, the through hole can be inserted into a displacement sensor, the displacement sensor is fixed, the piston rod 12 can move up and down, and the displacement sensor can know the displacement distance of the piston rod 12 by sensing the displacement of the magnetic ring 24 so as to calculate whether displacement deviation occurs or not and investigate the reason of the problem. The servo valve block 6 is communicated with the pore passage of the upper actuating end 27 and the servo valve block 6 is communicated with the pore passage of the lower actuating end 28, and the detachable flushing valve plate 13 is fixed outside the pore passage through a screw a 18. Before the test bed works and runs, oil liquid of the system needs to be flushed. The upper end cover 11 is provided with an oil cylinder oil drain hole which is communicated with the upper actuating end 27 and is closed by a screw plug 2. Under the normal operating condition, plug screw 2 is the closed condition all the time, when servo hydraulic cylinder 108 goes wrong, can unscrew plug screw 2 and drain. A dust ring 1 and a Stepper seal 3 are arranged between a lower end cover 9 and a piston rod 12, a Glare ring b 5 for the piston rod is arranged between a cylinder 10 and the piston rod 12, an O-shaped ring b 16 is arranged between the cylinder 10 and an upper end cover 11, a Glare ring a 4 for the piston rod and a check ring a 25 are arranged between the upper end cover 11 and the piston rod 12, an O-shaped ring d 23 is arranged between a servo valve block 6 and a flushing valve plate 13, an O-shaped ring c 17 is arranged between the servo valve block 6 and the cylinder 10, and an O-shaped ring a 15 and a check ring b 26 are arranged between the upper end cover 11 and a pressure transformation cylinder 14.

During testing, system exhaust is firstly carried out, the medium box 101 provides a testing medium (cooling liquid) for the system, the filter 103 is a Y-type filter of Nanjing Potkon company, impurities in the medium are filtered, and the cleanliness of the system is guaranteed. When the test is started, the stop valve 102, the pneumatic stop valve first stop valve 114 and the second stop valve 115 are opened (the first stop valve 114 and the second stop valve 115 are preferably pneumatic stop valves), the circulating pump 104, the ACO-08WD-9KW high-low temperature unit 105 and the environment box 113 of Olympic machinery company are started to provide a test space for the whole test bed, a box body is provided, components for preheating the interior of the box body are arranged in the box body, the side wall of the box body is provided with an exhaust hole, the temperature of the environment box body is adjusted to a measurement standard required value, whether the flushing, exhausting and temperature adjustment are finished or not is judged through the feedback value of a timing and temperature sensor 116, after the flushing, exhausting and temperature adjustment are finished, the pressurizing pump 111 is started to pump hydraulic oil in the oil source box body 110 to provide high-pressure oil for the action of the servo hydraulic cylinder 108, the pressure in the test piece 112 is controlled to rise and fall through adjusting the, and when the experiment times are finished, the equipment is automatically stopped. Pressure fluctuation occurring in the test process is counteracted through the accumulator 106, so that the stability of pressure output is ensured, and the final pressure value is fed back through the pressure sensor 107.

Claims

1. The utility model provides a condenser tube pulse test bench which characterized in that: an outlet of the oil source box body (110) is connected with an inlet of a pressurizing pump (111), an outlet of the pressurizing pump (111) is connected with a first inlet of a servo valve (109), a first outlet of the servo valve (109) corresponds to the first inlet of the servo valve (109), the first outlet of the servo valve (109) is connected with a lower side actuating end of a piston rod (12) in a servo hydraulic cylinder (108), an upper side actuating end of the piston rod (12) in the servo hydraulic cylinder (108) is connected with a second inlet of the servo valve (109), a second inlet of the servo valve (109) corresponds to a second outlet of the servo valve (109), and the second outlet of the servo valve (109) is connected with an inlet of the oil source box body (110); the pressurizing end of the servo hydraulic cylinder (108) is provided with two passage ports, the passage port on one side of the pressurizing end of the servo hydraulic cylinder (108) is simultaneously connected with an energy accumulator (106) and an inlet of a first stop valve (114), the passage port on the other side of the pressurizing end of the servo hydraulic cylinder (108) is connected with an outlet of a high-temperature and low-temperature unit (105), the inlet of the high-temperature and low-temperature unit (105) is connected with an outlet of a circulating pump (104), the inlet of the circulating pump (104) is connected with a filter (103), the inlet of the filter (103) is connected with a stop valve (102), the other end of the stop valve (102) is connected with the outlet of a medium tank (101), the inlet of the medium tank (101) is connected with the outlet of a second stop valve (115), the inlet of the second stop valve (115) is connected with the outlet of an environment tank (113), the inlet of the environment tank (113) is connected with the outlet of the first stop valve (114), and a pipeline, and a pressure sensor (107) is arranged on a pipeline connecting the servo hydraulic cylinder (108) and the high-low temperature unit (105) or a pipeline connecting the servo hydraulic cylinder (108) and the first stop valve (114).

2. The cooling water pipe pulse test stand of claim 1, wherein: the inlet and outlet in the environmental chamber (113) are provided with a plurality of connectors for connecting the test pieces (112) in parallel.

3. The cooling water pipe pulse test stand of claim 1, wherein: and cooling liquid is filled in the medium box.

4. The cooling water pipe pulse test stand of claim 1, wherein: the servo hydraulic cylinder (108) comprises a servo valve block (6), a lower end cover (9), a cylinder barrel (10), an upper end cover (11), a piston rod (12) and a transformation cylinder barrel (14), wherein the upper side and the lower side of the cylinder barrel (10) are respectively fixed with the upper end cover (11) and the lower end cover (9), the upper side of the upper end cover (11) is fixed with the transformation cylinder barrel (14), the inner diameters of the upper end cover (11) and the lower end cover (9) are smaller than that of the cylinder barrel (10), the upper end of the piston rod (12) penetrates through the lower end cover (9), the cylinder barrel (10) and the upper end cover (11), the diameter of the middle part of the piston rod (12) is larger than that of the upper part and the lower part, a cavity gap between the middle part of the piston rod (12) and the upper end cover (11) and located in the cylinder barrel (10) is an upper actuating end (27), and a cavity gap between, the cavity between the upper end of the piston rod (12) and the transformation cylinder barrel (14) is a transformation end (29), the side wall of the cylinder barrel (10) is fixed with a servo valve block (6), the servo valve block (6) is provided with a pore channel communicated with the upper actuating end (27), and the servo valve block (6) is also provided with a pore channel communicated with the lower actuating end (28).

5. The cooling water pipe pulse test bed according to claim 4, characterized in that: the lower end of the piston rod (12) is provided with an end pressing plate (7), the middle of the end pressing plate (7) is provided with a through hole, and a magnetic ring (24) and a magnetic isolation gasket (8) are fixed on the through hole through a screw c (20).

6. The cooling water pipe pulse test bed according to claim 4, characterized in that: the servo valve block (6) is communicated with the pore channel of the upper actuating end (27) and the servo valve block (6) is communicated with the pore channel of the lower actuating end (28), and a detachable flushing valve plate (13) is fixed outside the pore channel through a screw a (18).

7. The cooling water pipe pulse test bed according to claim 4, characterized in that: the upper end cover (11) is provided with an oil cylinder oil drain hole which is communicated with the upper actuating end (27), and the oil cylinder oil drain hole is sealed by a screw plug (2).

8. The cooling water pipe pulse test bed according to claim 4, characterized in that: the improved cylinder is characterized in that a dust ring (1) and a Stent seal (3) are arranged between the lower end cover (9) and the piston rod (12), a Glare ring b (5) for the piston rod is arranged between the cylinder (10) and the piston rod (12), an O-shaped ring b (16) is arranged between the cylinder (10) and the upper end cover (11), a Glare ring a (4) and a check ring a (25) for the piston rod are arranged between the upper end cover (11) and the piston rod (12), an O-shaped ring d (23) is arranged between the servo valve block (6) and the flushing valve plate (13), an O-shaped ring c (17) is arranged between the servo valve block (6) and the cylinder (10), and an O-shaped ring a (15) and a check ring b (26) are arranged between the upper end cover (11.