CN221195614U - High-temperature high-pressure test bed hydraulic system - Google Patents
High-temperature high-pressure test bed hydraulic system Download PDFInfo
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- CN221195614U CN221195614U CN202322776932.2U CN202322776932U CN221195614U CN 221195614 U CN221195614 U CN 221195614U CN 202322776932 U CN202322776932 U CN 202322776932U CN 221195614 U CN221195614 U CN 221195614U
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- 238000012360 testing method Methods 0.000 title claims abstract description 75
- 238000010438 heat treatment Methods 0.000 claims abstract description 44
- 239000003921 oil Substances 0.000 claims description 117
- 230000003068 static effect Effects 0.000 claims description 48
- 239000007788 liquid Substances 0.000 claims description 33
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- 230000002706 hydrostatic effect Effects 0.000 claims description 8
- 239000010720 hydraulic oil Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 abstract description 2
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
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- 238000002474 experimental method Methods 0.000 description 2
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- 230000009286 beneficial effect Effects 0.000 description 1
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Abstract
The utility model provides a high-temperature high-pressure test bed hydraulic system, which relates to the field of aviation equipment detection and comprises a first hydraulic source, a throttle valve, a high-temperature heating system, a first three-position four-way reversing valve, a second three-position four-way reversing valve, a two-position four-way reversing valve, a first overflow valve and a second overflow valve; the hydraulic components are connected in a mode in the specification, oil in the hydraulic components can be circularly heated while the pressure and the flow of the system are regulated, and the hydraulic components alternately enter the actuator and the accumulator through the reversing valve to complete a high-temperature circulation test and a high-low-pressure circulation test.
Description
Technical Field
The utility model relates to the field of aircraft equipment detection, in particular to a high-temperature high-pressure test bed hydraulic system.
Background
The working cylinder and accumulator products in the aircraft need not only be subjected to extremely low-temperature working cycle life experiments but also to high-temperature working cycle life experiments before leaving the factory. The life test process of the actuator cylinder mainly comprises three parts of a static pressure test, a circulation test and an emergency test. One working cycle of the actuator cylinder comprises four working steps of extending, extending and maintaining pressure, retracting and retracting the actuator cylinder. According to the requirement of the existing technology, the high-temperature working cycle needs hydraulic oil to enter the product instantly at a specified high temperature (generally about 150+/-5 ℃), the working cycle is carried out, and then the movement condition of a tested piece is observed and researched.
The inventor researches that the oil is generally heated to the specified temperature and then injected into a hydraulic system for driving the products of the actuator cylinder and the accumulator so as to complete the test, and the hydraulic system is not specially used for detecting the products of the actuator cylinder and the accumulator.
Disclosure of utility model
The utility model aims to provide a high-temperature high-pressure test bed hydraulic system, wherein oil in the hydraulic system can be circularly heated while the pressure and the flow of the system are regulated, and the oil alternately enters an actuator and an accumulator through a reversing valve to complete a high-temperature circulation test and a high-low pressure circulation test.
Embodiments of the present utility model are implemented as follows:
The utility model provides a high-temperature high-pressure test bed hydraulic system, which comprises a first hydraulic source, a throttle valve, a high-temperature heating system, a first three-position four-way reversing valve, a second three-position four-way reversing valve, a two-position four-way reversing valve, a first overflow valve and a second overflow valve; the output end of the first hydraulic source is connected with the throttle valve, the throttle valve is connected with the inlet end of the high-temperature heating system, the outlet end of the high-temperature heating system is connected with the P port of the first three-position four-way reversing valve, and the remaining T port, A port and B port of the first three-position four-way reversing valve are respectively connected with the oil return end of the first hydraulic source, the rodless cavity of the actuator and the rod cavity of the actuator;
The second three-position four-way reversing valve is connected with the first three-position four-way reversing valve in parallel, and the P port, the T port, the A port and the B port of the second three-position four-way reversing valve are respectively and correspondingly connected with the P port, the T port, the A port and the B port of the first three-position four-way reversing valve;
The P port, the T port and the B port of the two-position four-way reversing valve are respectively connected with the outlet end of the high-temperature heating system, the oil return end of the first hydraulic source and the accumulator, and the A port is in a closed state;
An oil inlet of the first overflow valve is connected with an output end of the first hydraulic source, and an oil outlet of the first overflow valve is connected with an oil return end of the first hydraulic source;
An oil inlet of the second overflow valve is connected with an outlet end of the high-temperature heating system, and an oil outlet of the second overflow valve is connected with an oil return end of the first hydraulic source.
In an alternative embodiment, the high temperature and high pressure test bench hydraulic system further comprises a first two-way valve and a third relief valve, wherein the first two-way valve is connected in parallel with the first relief valve, and the third relief valve is connected in parallel with the first two-way valve.
In an alternative embodiment, the high-temperature high-pressure test bench hydraulic system further comprises a second two-position two-way valve, and the second two-position two-way valve is arranged on a passage for connecting the second overflow valve with the high-temperature heating system.
In an alternative embodiment, the high-temperature and high-pressure test bench hydraulic system further comprises a check valve and a first high-pressure filter, wherein the check valve and the first high-pressure filter are connected in series on a passage for connecting the first hydraulic pressure source with the throttle valve.
In an alternative embodiment, the high-temperature and high-pressure test bench hydraulic system further comprises a water cooler and a second high-pressure filter, wherein the water cooler and the second high-pressure filter are arranged at the oil return end of the first hydraulic source in series and are used for treating hydraulic oil flowing back to the first hydraulic source from the second overflow valve.
In an alternative embodiment, the high-temperature high-pressure test bed hydraulic system further comprises a motor, a thermometer and a pressure gauge, wherein the motor, the thermometer and the pressure gauge are all connected in series on a passage connected with the high-temperature heating system and the first three-position four-way reversing valve.
In an alternative embodiment, the first hydraulic source includes a first oil tank, a first hydraulic pump, a first oil absorption filter, a first liquid level thermometer, a first liquid level control relay, a temperature transmitter and a first air filter, wherein one end of the first hydraulic pump is connected with the first oil absorption filter arranged in the first oil tank, the other end of the first hydraulic pump is connected with the throttle valve, and the first liquid level thermometer, the first liquid level control relay, the temperature transmitter and the first air filter are all arranged on the first oil tank.
In an alternative embodiment, the high-temperature high-pressure test bed hydraulic system further comprises a second hydraulic source, a first static pressure interface, a second static pressure interface, a third static pressure interface and a visible static pressure liquid column; the input ends of the first static pressure interface, the second static pressure interface and the third static pressure interface are combined into a passage and are connected with the output end of the second hydraulic pressure source, and the input end of the visible static pressure liquid column is connected with the combined passage of the first static pressure interface, the second static pressure interface and the third static pressure interface and the oil return end of the second hydraulic pressure source.
In an alternative embodiment, the output end of the second hydraulic pressure source is provided with a first switch, and the passage for connecting the visible hydrostatic liquid column with the second hydraulic pressure source is provided with a second switch.
In an alternative embodiment, the second hydraulic source includes a second oil tank, a second hydraulic pump, a second oil suction filter, a second liquid level thermometer, a second liquid level control relay and a second air filter, one end of the second hydraulic pump is connected with the second oil suction filter arranged inside the second oil tank, the other end is connected with the first static pressure interface, the second static pressure interface and the input end of the third static pressure interface, and the second liquid level thermometer, the second liquid level control relay and the second air filter are all arranged on the second oil tank.
The embodiment of the utility model has the beneficial effects that:
The utility model provides a high-temperature high-pressure test bed hydraulic system which comprises a first hydraulic source, a throttle valve, a high-temperature heating system, a first three-position four-way reversing valve, a second three-position four-way reversing valve, a two-position four-way reversing valve, a first overflow valve and a second overflow valve, wherein the throttle valve is arranged on the first overflow valve; the output end of the first hydraulic source is connected with a throttle valve, the throttle valve is connected with the inlet end of the high-temperature heating system, the outlet end of the high-temperature heating system is connected with the P port of the first three-position four-way reversing valve, and the remaining T port, the A port and the B port of the first three-position four-way reversing valve are respectively connected with the oil return end of the first hydraulic source, the rodless cavity of the actuator and the rod cavity of the actuator; the second three-position four-way reversing valve is connected with the first three-position four-way reversing valve in parallel, and the P port, the T port, the A port and the B port of the second three-position four-way reversing valve are respectively and correspondingly connected with the P port, the T port, the A port and the B port of the first three-position four-way reversing valve; the P port, the T port and the B port of the two-position four-way reversing valve are respectively connected with the outlet end of the high-temperature heating system, the oil return end of the first hydraulic source and the accumulator, and the A port is in a closed state; an oil inlet of the first overflow valve is connected with an output end of the first hydraulic source, and an oil outlet of the first overflow valve is connected with an oil return end of the first hydraulic source; an oil inlet of the second overflow valve is connected with an outlet end of the high-temperature heating system, and an oil outlet of the second overflow valve is connected with an oil return end of the first hydraulic source.
According to the utility model, the first overflow valve is a proportional pressure valve, the second overflow valve is a flow valve, when the actuator is tested to be Wen Youye, oil is provided by a first hydraulic source, pressure and flow required by a product are obtained through adjustment of the first overflow valve and the second overflow valve, heating circulation is carried out through a high-temperature heating system, the temperature of the oil is heated to the temperature required by the test, and the oil is ready to be fed into an actuator or an accumulator product, so that a high Wen Youye condition is provided for the high-temperature test of the product;
When the durable circulation high-temperature test of the actuator product is carried out, oil is provided by a first hydraulic source, pressure and flow required by the product are obtained through adjustment of a first overflow valve and a second overflow valve, the temperature of the oil is heated to the temperature required by the test through a high-temperature heating system, and the oil is alternately commutated to enter the actuator product through a first three-position four-way reversing valve or a second three-position four-way reversing valve, so that the high-temperature circulation test of the actuator product is completed; it is noted that the first three-position four-way reversing valve and the second three-position four-way reversing valve can be used instead of or in addition to each other, for example, when one valve is damaged, the other valve can ensure the normal operation of the hydraulic system, the test effect is not affected, and the system stability is maintained; when the actuating cylinder is filled with oil or the oil in the actuating cylinder is commutated, the two reversing valves can be powered on simultaneously, which is equivalent to that the two channels are used for simultaneously charging or commutating the actuating cylinder, so that the charging or commutating efficiency is improved;
When the high-low pressure circulation high-temperature test of the accumulator product is carried out, oil is provided by a first hydraulic source, the required high pressure and flow of the product are obtained through adjustment of a first overflow valve and a second overflow valve, the oil temperature of the product is heated to the temperature required by the test through a high-temperature heating system, the two-position four-way reversing valve is powered on, the accumulator product bears the high pressure, the second overflow valve is electrically communicated, the accumulator product bears the low pressure, the second three-position four-way reversing valve is powered off, the accumulator product bears the zero pressure, and the second overflow valve and the two-position four-way reversing valve are alternately powered on and powered off according to the technological requirements of the product, so that the high-low pressure circulation test of the accumulator product is completed.
According to the utility model, the oil in the system can be circularly heated while the pressure and flow of the system are regulated, and the oil alternately enters the actuator and the accumulator through the reversing valve to complete a high-temperature circulation test and a high-low pressure circulation test.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic diagram of a hydraulic system of a high-temperature and high-pressure test stand according to an embodiment of the present utility model.
Icon:
10-a first hydraulic source; 11-a throttle valve; 12-a high temperature heating system; 13-a first three-position four-way reversing valve; 14-a second three-position four-way reversing valve; 15-two-position four-way reversing valve; 16-a first overflow valve; 17-a second overflow valve; 18-a first two-position two-way valve; 19-a third overflow valve; 20-a second two-position two-way valve; 21-a one-way valve; 22-a first high pressure filter; 23-a water cooler; 24-a second high pressure filter; 25-an electric motor; 26-thermometer; 27-a pressure gauge; 28-a first oil tank; 29-a first hydraulic pump; 30-a first oil absorption filter; 31-a first level thermometer; 32-a first level control relay; 33-temperature transmitter; 34-a first air cleaner; 35-a second hydraulic source; 36-a first static pressure interface; 37-a second static pressure interface; 38-a third static pressure interface; 39-visual hydrostatic column; 40-a first switch; 41-a second switch; 42-a second oil tank; 43-a second hydraulic pump; 44-a second oil absorption filter; 45-a second level thermometer; 46-a second level control relay; 47-second air cleaner.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
The high pressure mentioned in this example means a pressure value of 2 to 41MPa.
As shown in fig. 1, the present embodiment provides a hydraulic system of a high-temperature and high-pressure test bench, which includes a first hydraulic source 10, a throttle valve 11, a high-temperature heating system 12, a first three-position four-way reversing valve 13, a second three-position four-way reversing valve 14, a two-position four-way reversing valve 15, a first overflow valve 16 and a second overflow valve 17; the output end of the first hydraulic pressure source 10 is connected with a throttle valve 11, the throttle valve 11 is connected with the inlet end of the high-temperature heating system 12, the outlet end of the high-temperature heating system 12 is connected with the P port of the first three-position four-way reversing valve 13, and the remaining T port, A port and B port of the first three-position four-way reversing valve 13 are respectively connected with the oil return end of the first hydraulic pressure source 10, the rodless cavity of the actuator and the rod cavity of the actuator; the second three-position four-way reversing valve 14 is connected with the first three-position four-way reversing valve 13 in parallel, and the P port, the T port, the A port and the B port of the second three-position four-way reversing valve 14 are respectively and correspondingly connected with the P port, the T port, the A port and the B port of the first three-position four-way reversing valve 13; the P port, the T port and the B port of the two-position four-way reversing valve 15 are respectively connected with the outlet end of the high-temperature heating system 12, the oil return end of the first hydraulic source 10 and the accumulator, and the A port is in a closed state; an oil inlet of the first overflow valve 16 is connected with an output end of the first hydraulic source 10, and an oil outlet of the first overflow valve 16 is connected with an oil return end of the first hydraulic source 10; an oil inlet of the second overflow valve 17 is connected with an outlet end of the high-temperature heating system 12, and an oil outlet of the second overflow valve 17 is connected with an oil return end of the first hydraulic source 10. In detail, when the first three-position four-way reversing valve 13 in the embodiment is not electrified, the four interfaces are all closed, when the first electric potential is electrified, the port P is communicated with the port B, the port T is communicated with the port A, and when the second electric potential is electrified, the port P is communicated with the port A, and the port T is communicated with the port B; the second three-position four-way reversing valve 14 in the embodiment is closed when no power is supplied, the port A and the port B are communicated with the port T, when the first electric potential is supplied, the port P is communicated with the port B, the port T is communicated with the port A, and when the second electric potential is supplied, the port P is communicated with the port A, and the port T is communicated with the port B; in this embodiment, when the two-position four-way reversing valve 15 is powered, the port P is communicated with the port a, the port T is communicated with the port B, and when the power is powered, the port P is not communicated with the port B, and the port T is communicated with the port a.
In this embodiment, the first relief valve 16 is a proportional pressure valve, the second relief valve 17 is a flow valve, when the actuator test needs to be high Wen Youye, oil is provided by the first hydraulic source 10, pressure and flow required by the product are obtained through adjustment of the first relief valve 16 and the second relief valve 17, heating circulation is performed through the high-temperature heating system 12, the temperature of the oil is heated to the temperature required by the test, and the oil is ready to be supplied to the actuator or the accumulator product, so as to provide high Wen Youye conditions for the high-temperature test of the product;
When the durable circulation high-temperature test of the actuator product is carried out, oil is provided by a first hydraulic source 10, pressure and flow required by the product are obtained through adjustment of a first overflow valve 16 and a second overflow valve 17, the temperature of the oil is heated to the temperature required by the test through a high-temperature heating system 12, and the oil is alternately commutated to enter the actuator product through a first three-position four-way reversing valve 13 or a second three-position four-way reversing valve 14, so that the high-temperature circulation test of the actuator product is completed; it should be noted that the first three-position four-way reversing valve 13 and the second three-position four-way reversing valve 14 can be used instead of or in addition to each other, for example, when one of them is damaged, the other can ensure the normal operation of the hydraulic system, the test effect is not affected, and the system is maintained stable; when the actuating cylinder is filled with oil or the oil in the actuating cylinder is commutated, the two reversing valves can be powered on simultaneously, which is equivalent to that the two channels are used for simultaneously charging or commutating the actuating cylinder, so that the charging or commutating efficiency is improved;
when the high-low pressure circulation high-temperature test of the accumulator product is carried out, oil is provided by the first hydraulic source 10, the required high pressure and flow of the product are obtained through adjustment of the first overflow valve 16 and the second overflow valve 17, the temperature of the oil of the product is heated to the temperature required by the test through the high-temperature heating system 12, the two-position four-way reversing valve 15 is powered on, the accumulator product bears the high pressure, the second overflow valve 17 is electrically communicated, the accumulator product bears the low pressure, the second three-position four-way reversing valve 14 loses power, the accumulator product bears the zero pressure, and the second overflow valve 17 and the two-position four-way reversing valve 15 alternately are powered on and powered off according to the technological requirements of the product, so that the high-low pressure circulation test of the accumulator product is completed.
According to the embodiment, the oil circulation heating can be performed while the pressure and the flow of the system are regulated, and the oil circulation heating alternately enters the actuator and the accumulator through the reversing valve to complete a high-temperature circulation test and a high-low-pressure circulation test.
Further, the high-temperature high-pressure test bench hydraulic system further comprises a first two-position two-way valve 18 and a third overflow valve 19, wherein the first two-position two-way valve 18 is connected with the first overflow valve 16 in parallel, and the third overflow valve 19 is connected with the first two-position two-way valve 18 in parallel. In detail, the first two-way valve 18 is in a communication state when not energized, and the first two-way valve 18 is in a cutoff state when energized. It will be appreciated that first two-way valve 18 and third relief valve 19 combine to form an electromagnetic relief valve, and that first relief valve 16 regulates the pressure of the hydraulic system when first two-way valve 18 is energized.
Further, the high-temperature high-pressure test bench hydraulic system further comprises a second two-position two-way valve 20, and the second two-position two-way valve 20 is arranged on a passage of the second overflow valve 17 connected with the high-temperature heating system 12. In detail, the second two-position two-way valve 20 is in a cut-off state when not energized, and the second two-position two-way valve 20 is in a communication state when energized, it will be appreciated that the flow rate from the high temperature heating system 12 to the first three-position four-way reversing valve 13 may be regulated after the second two-position two-way valve 20 is energized.
Further, the high-temperature high-pressure test bench hydraulic system further comprises a check valve 21 and a first high-pressure filter 22, and the check valve 21 and the first high-pressure filter 22 are connected in series on a passage of the first hydraulic pressure source 10 connected with the throttle valve 11. It will be appreciated that the check valve 21 prevents back flow of oil and the first high pressure filter 22 acts to filter impurities from the oil.
Further, the high-temperature high-pressure test bench hydraulic system further comprises a water cooler 23 and a second high-pressure filter 24, wherein the water cooler 23 and the second high-pressure filter 24 are arranged at the oil return end of the first hydraulic pressure source 10 and are used for treating hydraulic oil flowing back to the first hydraulic pressure source 10 from the first overflow valve 16 and the second overflow valve 17. It will be appreciated that the water cooler 23 is used to cool the temperature of the oil in the hydraulic system, and in other embodiments, the water cooler 23 may be replaced with an air cooler; the function of the second high pressure filter 24 communicates with the function of the first high pressure filter 22.
Further, the high-temperature high-pressure test bench hydraulic system further comprises a motor 25, a thermometer 26 and a pressure gauge 27, wherein the motor 25, the thermometer 26 and the pressure gauge 27 are all connected in series on a passage of the high-temperature heating system 12 connected with the first three-position four-way reversing valve 13. It will be appreciated that the motor 25 acts to push the oil in the pipeline, and the thermometer 26 and the manometer 27 act to measure the temperature and pressure of the oil from the high temperature heating system 12, respectively, so that the temperature control accuracy and pressure control accuracy of the oil in the low temperature test of the product can be ensured by a technician conveniently and timely adjusted.
In this embodiment, the first hydraulic pressure source 10 includes a first oil tank 28, a first hydraulic pump 29, a first oil suction filter 30, a first liquid level thermometer 31, a first liquid level control relay 32, a temperature transmitter 33, and a first air filter 34, one end of the first hydraulic pump 29 is connected to the first oil suction filter 30 disposed inside the first oil tank 28, the other end is connected to the throttle valve 11, and the first liquid level thermometer 31, the first liquid level control relay 32, the temperature transmitter 33, and the first air filter 34 are all disposed on the first oil tank 28. In detail, the oil return end of the first hydraulic pressure source 10 is provided on the first oil tank 28.
Further, the high-temperature high-pressure test bed hydraulic system further comprises a second hydraulic pressure source 35, a first static pressure interface 36, a second static pressure interface 37, a third static pressure interface 38 and a visible static pressure liquid column 39; the input ends of the first static pressure interface 36, the second static pressure interface 37 and the third static pressure interface 38 are combined into a passage and are connected to the output end of the second hydraulic pressure source 35, and the input end of the visible static pressure liquid column 39 is connected to the combined passage of the first static pressure interface 36, the second static pressure interface 37 and the third static pressure interface 38 and the oil return end of the second hydraulic pressure source 35. It will be appreciated that the purpose of the static pressure interface and the visual static pressure liquid column 39 is to perform a static pressure test on the product, when the product is tested, the height of the visual static pressure liquid column 39 is manually adjusted, and when the liquid column reaches the required height, the static pressure system is closed, and the product static pressure test can be started.
Further, a first switch 40 is provided at the output end of the second hydraulic pressure source 35, and a second switch 41 is provided on the path through which the visible hydrostatic column 39 is connected to the second hydraulic pressure source 35.
Specifically, the second hydraulic pressure source 35 includes a second oil tank 42, a second hydraulic pump 43, a second oil suction filter 44, a second liquid level thermometer 45, a second liquid level control relay 46, and a second air filter 47, one end of the second hydraulic pump 43 is connected to the second oil suction filter 44 disposed inside the second oil tank 42, the other end is connected to the input-end merging passages of the first static pressure interface 36, the second static pressure interface 37, and the third static pressure interface 38, and the second liquid level thermometer 45, the second liquid level control relay 46, and the second air filter 47 are all disposed on the second oil tank 42.
The hydraulic system of the high-temperature high-pressure test bed provided by the embodiment has the following advantages:
In this embodiment, the first relief valve 16 is a proportional pressure valve, the second relief valve 17 is a flow valve, when the actuator test needs to be high Wen Youye, oil is provided by the first hydraulic source 10, pressure and flow required by the product are obtained through adjustment of the first relief valve 16 and the second relief valve 17, heating circulation is performed through the high-temperature heating system 12, the temperature of the oil is heated to the temperature required by the test, and the oil is ready to be supplied to the actuator or the accumulator product, so as to provide high Wen Youye conditions for the high-temperature test of the product; when the durable circulation high-temperature test of the actuator product is carried out, oil is provided by a first hydraulic source 10, pressure and flow required by the product are obtained through adjustment of a first overflow valve 16 and a second overflow valve 17, the temperature of the oil is heated to the temperature required by the test through a high-temperature heating system 12, and the oil is alternately commutated to enter the actuator product through a first three-position four-way reversing valve 13 or a second three-position four-way reversing valve 14, so that the high-temperature circulation test of the actuator product is completed; it should be noted that the first three-position four-way reversing valve 13 and the second three-position four-way reversing valve 14 can be used instead of or in addition to each other, for example, when one of them is damaged, the other can ensure the normal operation of the hydraulic system, the test effect is not affected, and the system is maintained stable; when the actuating cylinder is filled with oil or the oil in the actuating cylinder is commutated, the two reversing valves can be powered on simultaneously, which is equivalent to that the two channels are used for simultaneously charging or commutating the actuating cylinder, so that the charging or commutating efficiency is improved; when the high-low pressure circulation high-temperature test of the accumulator product is carried out, oil is provided by the first hydraulic source 10, the required high pressure and flow of the product are obtained through adjustment of the first overflow valve 16 and the second overflow valve 17, the temperature of the oil of the product is heated to the temperature required by the test through the high-temperature heating system 12, the two-position four-way reversing valve 15 is powered on, the accumulator product bears the high pressure, the second overflow valve 17 is electrically communicated, the accumulator product bears the low pressure, the second three-position four-way reversing valve 14 loses power, the accumulator product bears the zero pressure, and the second overflow valve 17 and the two-position four-way reversing valve 15 alternately are powered on and powered off according to the technological requirements of the product, so that the high-low pressure circulation test of the accumulator product is completed.
The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.
Claims (10)
1. The high-temperature high-pressure test bed hydraulic system is characterized by comprising a first hydraulic source, a throttle valve, a high-temperature heating system, a first three-position four-way reversing valve, a second three-position four-way reversing valve, a two-position four-way reversing valve, a first overflow valve and a second overflow valve; the output end of the first hydraulic source is connected with the throttle valve, the throttle valve is connected with the inlet end of the high-temperature heating system, the outlet end of the high-temperature heating system is connected with the P port of the first three-position four-way reversing valve, and the remaining T port, A port and B port of the first three-position four-way reversing valve are respectively connected with the oil return end of the first hydraulic source, the rodless cavity of the actuator and the rod cavity of the actuator;
The second three-position four-way reversing valve is connected with the first three-position four-way reversing valve in parallel, and the P port, the T port, the A port and the B port of the second three-position four-way reversing valve are respectively and correspondingly connected with the P port, the T port, the A port and the B port of the first three-position four-way reversing valve;
The P port, the T port and the B port of the two-position four-way reversing valve are respectively connected with the outlet end of the high-temperature heating system, the oil return end of the first hydraulic source and the accumulator, and the A port is in a closed state;
An oil inlet of the first overflow valve is connected with an output end of the first hydraulic source, and an oil outlet of the first overflow valve is connected with an oil return end of the first hydraulic source;
An oil inlet of the second overflow valve is connected with an outlet end of the high-temperature heating system, and an oil outlet of the second overflow valve is connected with an oil return end of the first hydraulic source.
2. The high temperature high pressure test stand hydraulic system of claim 1, further comprising a first two-way valve in parallel with the first relief valve and a third relief valve in parallel with the first two-way valve.
3. The high temperature high pressure test stand hydraulic system of claim 1, further comprising a second two-position two-way valve disposed on a path through which the second relief valve is connected to the high temperature heating system.
4. The high temperature and high pressure test stand hydraulic system of claim 1, further comprising a check valve and a first high pressure filter, wherein the check valve and the first high pressure filter are both connected in series with a passage through which the first hydraulic pressure source is connected to the throttle valve.
5. The high temperature and high pressure test stand hydraulic system according to claim 1, further comprising a water cooler and a second high pressure filter, wherein the water cooler and the second high pressure filter are arranged in series at an oil return end of the first hydraulic pressure source for processing hydraulic oil flowing back to the first hydraulic pressure source from the second overflow valve.
6. The hydraulic system of claim 1, further comprising a motor, a thermometer and a pressure gauge, wherein the motor, the thermometer and the pressure gauge are all connected in series on a path of the high temperature heating system connected with the first three-position four-way reversing valve.
7. The high temperature and high pressure test stand hydraulic system of claim 1, wherein the first hydraulic source comprises a first oil tank, a first hydraulic pump, a first oil suction filter, a first liquid level thermometer, a first liquid level control relay, a temperature transmitter and a first air filter, one end of the first hydraulic pump is connected with the first oil suction filter arranged in the first oil tank, the other end of the first hydraulic pump is connected with the throttle valve, and the first liquid level thermometer, the first liquid level control relay, the temperature transmitter and the first air filter are all arranged on the first oil tank.
8. The high temperature high pressure test stand hydraulic system of claim 1, further comprising a second hydraulic source, a first hydrostatic interface, a second hydrostatic interface, a third hydrostatic interface, and a visible hydrostatic fluid column; the input ends of the first static pressure interface, the second static pressure interface and the third static pressure interface are combined into a passage and are connected with the output end of the second hydraulic pressure source, and the input end of the visible static pressure liquid column is connected with the combined passage of the first static pressure interface, the second static pressure interface and the third static pressure interface and the oil return end of the second hydraulic pressure source.
9. The high-temperature and high-pressure test bed hydraulic system according to claim 8, wherein the output end of the second hydraulic source is provided with a first switch, and the passage for connecting the visible hydrostatic column with the second hydraulic source is provided with a second switch.
10. The hydraulic system of claim 8, wherein the second hydraulic source comprises a second oil tank, a second hydraulic pump, a second oil suction filter, a second liquid level thermometer, a second liquid level control relay and a second air filter, one end of the second hydraulic pump is connected with the second oil suction filter arranged in the second oil tank, the other end is connected with the input end merging passages of the first static pressure interface, the second static pressure interface and the third static pressure interface, and the second liquid level thermometer, the second liquid level control relay and the second air filter are all arranged on the second oil tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322776932.2U CN221195614U (en) | 2023-10-16 | 2023-10-16 | High-temperature high-pressure test bed hydraulic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322776932.2U CN221195614U (en) | 2023-10-16 | 2023-10-16 | High-temperature high-pressure test bed hydraulic system |
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| Publication Number | Publication Date |
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| CN221195614U true CN221195614U (en) | 2024-06-21 |
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|---|---|---|---|
| CN202322776932.2U Active CN221195614U (en) | 2023-10-16 | 2023-10-16 | High-temperature high-pressure test bed hydraulic system |
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| Country | Link |
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| CN (1) | CN221195614U (en) |
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2023
- 2023-10-16 CN CN202322776932.2U patent/CN221195614U/en active Active
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