CN110823487A - Multifunctional adjustable pressure test system - Google Patents
Multifunctional adjustable pressure test system Download PDFInfo
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- CN110823487A CN110823487A CN201910792890.7A CN201910792890A CN110823487A CN 110823487 A CN110823487 A CN 110823487A CN 201910792890 A CN201910792890 A CN 201910792890A CN 110823487 A CN110823487 A CN 110823487A
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
- G01M7/08—Shock-testing
Abstract
The invention discloses a multifunctional adjustable pressure test system, which comprises a high-pressure open control subsystem and a servo control subsystem; the high-pressure open type control subsystem comprises a high-temperature tank, a liquid supplementing pump set I, a high-pressure pump and an electromagnetic proportional overflow valve I; the high-pressure pump extracts oil from the high-temperature tank, the high-pressure pump is filled with a to-be-tested part to be emptied, and then the electric signal of the electromagnetic proportional overflow valve is adjusted according to the pressure required by the test and the real-time data feedback of the pressure sensor so as to realize the required pressure waveform; and a heating system is arranged in the high-temperature groove, so that the high-temperature and high-pressure test requirements on the test piece are met. The servo control subsystem comprises a system oil tank, a main pump set, a liquid supplementing pump set II, an electromagnetic proportional overflow valve II, an energy accumulator II, a servo valve and a pressure cylinder; and the main pump group is opened, the system pressure is set by adjusting the electromagnetic proportional overflow valve II, and the booster cylinder is controlled by the servo valve to become an alternating power source, so that the end of the to-be-tested piece obtains a required high-frequency pulse test pressure curve.
Description
Technical Field
The invention belongs to the technical field of pressure test devices, and particularly relates to a multifunctional adjustable pressure test system.
Background
For some products, such as aviation fuel oil systems, an impact pressure test is performed after production design, generally, a common pulse test bed is used for testing a product shell and a shell assembly, but the existing pulse test bed cannot meet the test requirements of the product in terms of pressure upper limit, pressure rise speed and temperature, and an impact pressure trapezoidal wave curve can not be performed under the condition of leakage, so that the target test is unstable, the test cannot be performed according to actual working conditions, and the test result is inaccurate. The test pressure and temperature can not be satisfied at the same time, and the test of different working conditions can not be completed on one device.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a multifunctional adjustable pressure test system.
The invention is realized by the following technical scheme:
a multifunctional adjustable pressure test system comprises a high-pressure open control subsystem and a servo control subsystem;
the high-pressure open type control subsystem comprises a high-temperature tank (1), a fluid infusion pump set I (2), a high-pressure pump (38), an energy accumulator I (36), an electromagnetic proportional overflow valve I (33), a pneumatic control ball valve I (32) and a pneumatic control ball valve II (27);
an inlet of a fluid infusion pump set I (2) is communicated with the high-temperature tank (1), an outlet of the fluid infusion pump set I (2) is connected with an inlet of a high-pressure pump (38) through a pipeline, an outlet of the high-pressure pump (38) is connected with an inlet of a pneumatic control ball valve I (32) through a pipeline, an outlet of the pneumatic control ball valve I (32) is connected to an inlet of a piece to be tested 22 through a pipeline, an outlet of the piece to be tested is connected with an inlet of a pneumatic control ball valve II (27) through a pipeline, and an outlet of the pneumatic control ball valve II (27) is connected; the energy accumulator I (36) is communicated with a connecting pipeline between the high-pressure pump (38) and the pneumatic control ball valve I (32); the inlet of the electromagnetic proportional overflow valve I (33) is communicated with a connecting pipeline between the high-pressure pump (38) and the pneumatic control ball valve I (32), and the outlet of the electromagnetic proportional overflow valve I (33) is connected back to the high-temperature groove through a pipeline; a heating and temperature control system is arranged in the high-temperature tank, so that the temperature of oil in the high-temperature tank can be controlled, and the high-temperature and high-pressure test requirements on a test piece are further met;
the servo control subsystem: the system comprises a system oil tank (7), a main pump group (9), a fluid infusion pump group II (5), a plate-type one-way valve (16), a tubular one-way valve (21), an electromagnetic proportional overflow valve II (10), an energy accumulator II (18), a servo valve (19) and a pressure cylinder (20);
an inlet of a main pump set (9) is communicated with a system oil tank (7), an outlet of the main pump set is connected with an inlet of a plate-type one-way valve (16) through a pipeline, an outlet of the plate-type one-way valve is connected with a P port of a servo valve (19) through a pipeline, a T port of the servo valve returns to the oil tank through a pipeline, an A port of the servo valve is connected to a first control port of a pressure cylinder (20) through a pipeline, a B port of the servo valve is connected to a second control port of the pressure cylinder (20) through a pipeline, an output port of the pressure cylinder is connected to a connecting pipeline between a pneumatic control ball valve I (32) and a to-be-tested piece through a pipeline, a pressure sensor (23) and a second pressure gauge (24) are arranged on a pipeline of an output port of; the inlet of the liquid supplementing pump set II (5) is communicated with the high-temperature groove (1) through a pipeline, the outlet of the liquid supplementing pump set II (5) is connected with the inlet of the tubular one-way valve (21) through a pipeline, and the outlet of the tubular one-way valve is connected with the input port of the pressure cylinder through a pipeline; the inlet of the electromagnetic proportional overflow valve II (10) is communicated with a connecting pipeline between the plate-type check valve (16) and the P port of the servo valve (19), and the outlet of the electromagnetic proportional overflow valve II (10) is connected back to the system oil tank (7) through a pipeline; the energy accumulator II (18) is connected to an oil inlet pipeline of a port P of the servo valve; the system oil tank (7) is also connected with a cooling loop, and a cooling pump set (12), a plate heat exchanger (14) and an oil return filter (13) are sequentially arranged on the cooling loop to ensure that the temperature of oil in the system oil tank is not over-temperature.
In the technical scheme, a pipeline between the liquid supplementing pump set I (2) and the high-pressure pump (38) is further connected with a first safety valve (40) through a branch, and an outlet of the first safety valve (40) is connected back to the high-temperature tank (1) through the pipeline.
In the technical scheme, a pipeline between the liquid supplementing pump set I (2) and the high-pressure pump (38) is also connected with a manual needle valve (37) through another branch, and an outlet of the manual needle valve is connected back to the high-temperature tank (1) through the pipeline.
In the technical scheme, a first filter (39) is arranged on a pipeline between the liquid supplementing pump set I (2) and the high-pressure pump (38), and a second filter (35) is arranged on a pipeline between the high-pressure pump (38) and the pneumatic control ball valve I (32).
In the technical scheme, a manual switch valve (29), a flowmeter (30), a first pressure gauge (28) and a third filter (34) are arranged on the return pipeline.
In the technical scheme, the pneumatic control ball valve I (32) and the pneumatic control ball valve II (27) are respectively connected with a gas circuit, and the gas circuit is provided with an electromagnetic valve (26).
In the technical scheme, a fourth filter (15) is further arranged on a connecting pipeline between the main pump group (9) and the plate-type one-way valve (16).
In the technical scheme, a fifth filter (4) is further arranged on a connecting pipeline between the liquid supplementing pump set II (5) and the tubular one-way valve (21).
In the technical scheme, a third pressure gauge (17) is arranged on a connecting pipeline between the plate-type one-way valve (16) and a P port of the servo valve (19).
In the technical scheme, the periphery of the to-be-tested piece is provided with a waste liquid receiving box, an oil return opening at the bottom of the waste liquid receiving box is connected back to the high-temperature groove (1) through a pipeline, and a pump and a valve are arranged on the pipeline.
Pressure test system with adjustable it is multi-functional, its characterized in that:
firstly, a high-pressure open control subsystem: firstly, a high-pressure pump extracts high-temperature oil from a high-temperature tank, a piece to be tested is filled with the high-temperature oil to be emptied, and when the piece to be tested is emptied, the pneumatic control ball valve I, the pneumatic control ball valve II and the manual switch valve are all in an open state; then, adjusting an electric signal of the electromagnetic proportional overflow valve according to the pressure required by the test and the real-time data feedback of the pressure sensor to realize the required pressure waveform, and meeting the test temperature required by the to-be-tested piece by adjusting the heating temperature of the oil liquid in the high-temperature tank; the energy accumulator I is used as an auxiliary energy source in the boosting process to realize the required boosting rate; the high-temperature tank provides required high-temperature oil for the test system;
secondly, a servo control subsystem: before a cyclic test, a pneumatic control ball valve II at the outlet of a to-be-tested piece is in an open state, a manual switch valve is in an open state, a pneumatic control ball valve I is in a closed state, a high-pressure pump and a fluid infusion pump set I are both in a closed state, and a fluid infusion pump set II is started to convey high-temperature oil into the to-be-tested piece for thorough evacuation; after emptying, the main pump group is opened to provide a pressure source, system pressure is set by adjusting the electromagnetic proportional overflow valve II, and the system pressure is changed into an alternating power source by controlling the forward and reverse switching of the pressure cylinder through the servo valve, so that a to-be-tested piece end obtains a required high-frequency pulse test pressure curve, and the frequency is controlled by the servo valve.
The invention has the advantages and beneficial effects that:
1. the pressure of the system is generated by reducing the pressure of the output pressure of the oil pump through the proportional overflow valve, when a test piece leaks, the output flow of the pump selected by people is higher than the leakage amount, so that the pressure cannot be influenced, and further, the test piece can be ensured to finish a high-temperature high-pressure trapezoidal wave curve under the condition of leakage, so that the test piece can finish a performance test under the actual working condition, and the characteristic of the test piece can be accurately judged.
2. The system combines the high-frequency servo valve and the pressure cylinder, improves the upper limit of pressure and the pressure boosting speed, increases the alternating frequency of a pressure pulse curve, and realizes the high-frequency pulse pressure test of the workpiece.
3. The system can realize the functions of high-temperature and high-pressure test and high-frequency pulse pressure test on the same test platform, and can adjust the test temperature, pressure and frequency according to actual requirements.
Drawings
FIG. 1 is a system block diagram of the present invention.
Wherein:
1-high temperature groove 2-fluid infusion pump set I3-pump 4-fifth filter 5-fluid infusion pump set II 6-oil filling port 7-system oil tank 8-temperature sensor 9-main pump set 10-electromagnetic proportional relief valve II 11-liquid level meter 12-cooling pump set 13-oil return filter 14-plate heat exchanger 15-fourth filter 16-plate one-way valve 17-third pressure gauge 18-energy accumulator II 19-servo valve 20-pressure cylinder 21-tubular one-way valve 22-to-be-tested piece 23-pressure sensor 24-second pressure gauge 26-electromagnetic valve 27-pneumatic control ball valve II 28-first pressure gauge 29-manual switch valve 30-flowmeter 31-second safety valve 32-pneumatic control ball valve I23-pressure sensor 24-second pressure gauge 26-pneumatic control ball valve II 28 33-an electromagnetic proportional relief valve I34-a third filter 35-a second filter 36-an accumulator I37-a manual needle valve 38-a high-pressure pump 39-a first filter 40-a first relief valve.
For a person skilled in the art, other relevant figures can be obtained from the above figures without inventive effort.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the present invention is further described below with reference to specific examples.
Example one
Referring to the attached drawings, the multifunctional adjustable pressure test system comprises a high-pressure open type control subsystem and a servo control subsystem.
The high-pressure open type control subsystem comprises a high-temperature tank 1, a fluid infusion pump set I2, a high-pressure pump 38, an energy accumulator I36, an electromagnetic proportional overflow valve I33, a pneumatic control ball valve I32 and a pneumatic control ball valve II 27.
The inlet of a fluid infusion pump set I2 is communicated with the high-temperature groove 1, the outlet of the fluid infusion pump set I2 is connected with the inlet of a high-pressure pump 38 through a pipeline, the outlet of the high-pressure pump 38 is connected with the inlet of a pneumatic control ball valve I32 through a pipeline, the outlet of the pneumatic control ball valve I32 is connected with the inlet of a to-be-tested piece 22 through a pipeline, the outlet of the to-be-tested piece 22 is connected with the inlet of a pneumatic control ball valve II 27 through a pipeline, and the outlet of the pneumatic control; the energy accumulator I36 is communicated with a connecting pipeline between the high-pressure pump 38 and the pneumatic control ball valve I32; the inlet of the electromagnetic proportional overflow valve I33 is communicated with a connecting pipeline between the high-pressure pump 38 and the pneumatic control ball valve I32, and the outlet of the electromagnetic proportional overflow valve I33 is connected back to the high-temperature tank 1 through a pipeline; be equipped with heating and temperature control system in high temperature groove 1, can control the fluid temperature in the high temperature groove, and then satisfy the high temperature high pressure test requirement to the test piece.
Furthermore, a pipeline between the liquid supplementing pump unit I2 and the high-pressure pump 38 is also connected with a first safety valve 40 through a branch, and an outlet of the first safety valve 40 is connected back to the high-temperature tank 1 through a pipeline.
Furthermore, a pipeline between the fluid infusion pump set I2 and the high-pressure pump 38 is also connected with a manual needle valve 37 through another branch, and the outlet of the manual needle valve 37 is connected back to the high-temperature tank 1 through a pipeline.
Furthermore, a first filter 39 is arranged on a pipeline between the liquid supplementing pump set I2 and the high-pressure pump 38, and a second filter 35 is arranged on a pipeline between the liquid supplementing pump 38 and the pneumatic control ball valve I32.
Further, a manual on-off valve 29, a flow meter 30, a first pressure gauge 28 and a third filter 34 are provided on the return line.
Furthermore, the pneumatic control ball valve I32 and the pneumatic control ball valve II (27) are respectively connected with a gas circuit, and an electromagnetic valve (26) is arranged on the gas circuit.
The servo control subsystem: the hydraulic booster pump comprises a system oil tank 7, a main pump group 9, a fluid infusion pump group II 5, a plate-type one-way valve 16, a tubular one-way valve 21, an electromagnetic proportional overflow valve II 10, an energy accumulator II 18, a servo valve 19 and a booster cylinder 20 (specifically, the booster cylinder is provided with two cavities of a hydraulic driving cavity and a medium booster cavity, the effect of boosting is realized mainly through the area ratio of different cylinder diameters in the two cavities, in the embodiment, the area of the cylinder diameter in the hydraulic driving cavity is 3-4 times of the area of the cylinder diameter in the medium booster cavity, the hydraulic driving cavity of the booster cylinder is provided with a first control port and a second control port, and the medium booster cavity of the booster cylinder is provided with an input port and an output.
An inlet of a main pump set 9 is communicated with a system oil tank 7, an outlet of the main pump set 9 is connected with an inlet of a plate-type one-way valve 16 through a pipeline, an outlet of the plate-type one-way valve 16 is connected with a P port (an oil inlet) of a servo valve 19 through a pipeline, a T port (an oil outlet) of the servo valve 3 returns to the oil tank through a pipeline, an A port (a control port) of the servo valve 3 is connected to a first control port of a pressure cylinder 20 through a pipeline, a B port (a control port) of the servo valve 3 is connected to a second control port of the pressure cylinder 20 through a pipeline, an output port of the pressure cylinder 20 is connected to a connecting pipeline between a ball valve I32 and a to-be-tested part 22 through a pipeline, a pressure sensor 23 and a second pressure gauge 24 are arranged on a pipeline of an output port of the pressure cylinder 20; the inlet of the liquid supplementing pump set II 5 is communicated with the high-temperature groove 1 through a pipeline, the outlet of the liquid supplementing pump set II 5 is connected with the inlet of the tubular one-way valve 21 through a pipeline, and the outlet of the tubular one-way valve 21 is connected with the input port of the pressure cylinder 20 through a pipeline; the inlet of the electromagnetic proportional overflow valve II 10 is communicated with a connecting pipeline between the plate-type check valve 16 and a P port (oil inlet) of the servo valve 19, and the outlet of the electromagnetic proportional overflow valve II 10 is connected back to the system oil tank 7 through a pipeline; and the energy accumulator II 18 is connected to an oil inlet pipeline of a P port (an oil inlet) of the servo valve 3 and provides the functions of pressure stabilization and energy storage for the system.
Furthermore, the system oil tank 7 is also connected with a cooling loop, and a cooling pump group 12, a plate heat exchanger 14 and an oil return filter 13 are sequentially arranged on the cooling loop, so that the temperature of oil in the system oil tank is not over-temperature.
Further, a fourth filter 15 is provided on a connection line between the main pump group 9 and the plate check valve 16.
Furthermore, a fifth filter 4 is arranged on a connecting pipeline between the liquid supplementing pump set II 5 and the tubular one-way valve 21.
Further, a third pressure gauge 17 is arranged on a connecting pipeline between the plate type check valve 16 and a P port (oil inlet) of the servo valve 19.
The working principle of the system is as follows:
firstly, a high-pressure open control subsystem: firstly, the high-pressure pump 38 extracts high-temperature oil from the high-temperature tank 1, the piece to be tested 22 is filled with the high-temperature oil and is emptied, and the pneumatic control ball valve I32, the pneumatic control ball valve II 27 and the manual switch valve 29 are all in an open state when the piece to be tested is emptied; then, adjusting the electric signal of the electromagnetic proportional relief valve 33 according to the pressure required by the test and the real-time data feedback of the pressure sensor 23 to realize the required pressure waveform, and meeting the required test temperature of the piece to be tested 22 by adjusting the heating temperature of the oil liquid in the high-temperature tank; the energy accumulator I36 is used as an auxiliary energy source in the boosting process to realize the required boosting rate; the high-temperature tank 1 provides required high-temperature oil for a test system, and the fluid infusion pump set I2 supplements media for the high-pressure pump 38; the first filter 39 and the second filter 35 are used for filtering impurities in the medium system and preventing the impurities from polluting the test piece; the first safety valve 40 is used for protecting the pressure at the inlet of the high-pressure pump 38 from overpressure, the pneumatic control ball valve I32 and the pneumatic control ball valve II 27 are used for maintaining the pressure at the inlet and the outlet of a to-be-tested part, and the corresponding opening and closing are controlled by the electromagnetic valve 26 during testing; the first pressure gauge 28 displays the pressure at the outlet of the test piece 22 to be tested; the flowmeter 30 reads the flow value of the outlet of the piece to be tested 22; the manual switch valve 29 is used for manually controlling the conduction state of the return pipeline; the manual needle valve 37 is used for manual pressure relief.
Secondly, a servo control subsystem: before a cyclic test, the pneumatic control ball valve II 27 at the outlet of the to-be-tested piece is in an open state, the manual switch valve 29 is in an open state, the pneumatic control ball valve I32 is in a closed state, the high-pressure pump 38 and the fluid infusion pump set I2 are both in a closed state, the fluid infusion pump set II 5 is started to convey high-temperature oil into the to-be-tested piece 22 for complete evacuation (namely air discharge), otherwise, the generation of a pressure waveform can be directly influenced; after emptying, the main pump group 9 is opened to provide a pressure source, system pressure is set by adjusting the electromagnetic proportional overflow valve II 10, and the forward and reverse switching of the pressure cylinder 20 is controlled by the servo valve 19 to become an alternating power source, so that a required high-frequency pulse test pressure curve is obtained at the end of a piece to be tested, and the frequency is controlled by the servo valve. The fourth filter 15 filters the system oil for the second time, so that the damage to the following elements is prevented; the plate-type one-way valve 16 is used for protecting the main pump group 9; the third pressure gauge 17 is used for displaying the system pressure value; and the energy accumulator II 5 is used for stabilizing the system pressure and storing energy.
Example two
On the basis of the first embodiment, the system oil tank 7 is further provided with a liquid level meter 11 and a temperature sensor 8, and the high-temperature tank 1 is also provided with the liquid level meter and the temperature sensor.
EXAMPLE III
On the basis of the first embodiment, further, a waste liquid receiving box is arranged on the periphery of the to-be-tested piece, an oil return opening at the bottom of the waste liquid receiving box is connected back to the high-temperature groove 1 through a pipeline, and a pump 3 and a valve are arranged on the pipeline.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The invention has been described in an illustrative manner, and it is to be understood that any simple variations, modifications or other equivalent changes which can be made by one skilled in the art without departing from the spirit of the invention fall within the scope of the invention.
Claims (11)
1. The utility model provides a pressure test system with adjustable it is multi-functional which characterized in that: the system comprises a high-voltage open type control subsystem and a servo control subsystem;
the high-pressure open type control subsystem comprises a high-temperature tank (1), a fluid infusion pump set I (2), a high-pressure pump (38), an energy accumulator I (36), an electromagnetic proportional overflow valve I (33), a pneumatic control ball valve I (32) and a pneumatic control ball valve II (27);
an inlet of a fluid infusion pump set I (2) is communicated with the high-temperature tank (1), an outlet of the fluid infusion pump set I (2) is connected with an inlet of a high-pressure pump (38) through a pipeline, an outlet of the high-pressure pump (38) is connected with an inlet of a pneumatic control ball valve I (32) through a pipeline, an outlet of the pneumatic control ball valve I (32) is connected to an inlet of a piece to be tested 22 through a pipeline, an outlet of the piece to be tested is connected with an inlet of a pneumatic control ball valve II (27) through a pipeline, and an outlet of the pneumatic control ball valve II (27) is connected; the energy accumulator I (36) is communicated with a connecting pipeline between the high-pressure pump (38) and the pneumatic control ball valve I (32); the inlet of the electromagnetic proportional overflow valve I (33) is communicated with a connecting pipeline between the high-pressure pump (38) and the pneumatic control ball valve I (32), and the outlet of the electromagnetic proportional overflow valve I (33) is connected back to the high-temperature groove through a pipeline; a heating and temperature control system is arranged in the high-temperature tank, so that the temperature of oil in the high-temperature tank can be controlled, and the high-temperature and high-pressure test requirements on a test piece are further met;
the servo control subsystem: the system comprises a system oil tank (7), a main pump group (9), a fluid infusion pump group II (5), a plate-type one-way valve (16), a tubular one-way valve (21), an electromagnetic proportional overflow valve II (10), an energy accumulator II (18), a servo valve (19) and a pressure cylinder (20);
an inlet of a main pump set (9) is communicated with a system oil tank (7), an outlet of the main pump set is connected with an inlet of a plate-type one-way valve (16) through a pipeline, an outlet of the plate-type one-way valve is connected with a P port of a servo valve (19) through a pipeline, a T port of the servo valve returns to the oil tank through a pipeline, an A port of the servo valve is connected to a first control port of a pressure cylinder (20) through a pipeline, a B port of the servo valve is connected to a second control port of the pressure cylinder (20) through a pipeline, an output port of the pressure cylinder is connected to a connecting pipeline between a pneumatic control ball valve I (32) and a to-be-tested piece through a pipeline, a pressure sensor (23) and a second pressure gauge (24) are arranged on a pipeline of an output port of; the inlet of the liquid supplementing pump set II (5) is communicated with the high-temperature groove (1) through a pipeline, the outlet of the liquid supplementing pump set II (5) is connected with the inlet of the tubular one-way valve (21) through a pipeline, and the outlet of the tubular one-way valve is connected with the input port of the pressure cylinder through a pipeline; the inlet of the electromagnetic proportional overflow valve II (10) is communicated with a connecting pipeline between the plate-type check valve (16) and the P port of the servo valve (19), and the outlet of the electromagnetic proportional overflow valve II (10) is connected back to the system oil tank (7) through a pipeline; the energy accumulator II (18) is connected to an oil inlet pipeline of a port P of the servo valve; the system oil tank (7) is also connected with a cooling loop, and a cooling pump set (12), a plate heat exchanger (14) and an oil return filter (13) are sequentially arranged on the cooling loop to ensure that the temperature of oil in the system oil tank is not over-temperature.
2. The multifunctional adjustable pressure testing system of claim 1, wherein: the pipeline between the liquid supplementing pump set I (2) and the high-pressure pump (38) is also connected with a first safety valve (40) through a branch, and the outlet of the first safety valve (40) is connected back to the high-temperature groove (1) through the pipeline.
3. The multifunctional adjustable pressure testing system of claim 1, wherein: the pipeline between the liquid supplementing pump set I (2) and the high-pressure pump (38) is also connected with a manual needle valve (37) through another branch, and the outlet of the manual needle valve is connected back to the high-temperature groove (1) through the pipeline.
4. The multifunctional adjustable pressure testing system of claim 1, wherein: a first filter (39) is arranged on a pipeline between the liquid supplementing pump set I (2) and the high-pressure pump (38), and a second filter (35) is arranged on a pipeline between the high-pressure pump (38) and the air control ball valve I (32).
5. The multifunctional adjustable pressure testing system of claim 1, wherein: a manual switch valve (29), a flowmeter (30), a first pressure gauge (28) and a third filter (34) are arranged on the return pipeline.
6. The multifunctional adjustable pressure testing system of claim 1, wherein: the pneumatic control ball valve I (32) and the pneumatic control ball valve II (27) are respectively connected with a gas circuit, and an electromagnetic valve (26) is arranged on the gas circuit.
7. The multifunctional adjustable pressure testing system of claim 1, wherein: and a fourth filter (15) is also arranged on a connecting pipeline between the main pump group (9) and the plate-type one-way valve (16).
8. The multifunctional adjustable pressure testing system of claim 1, wherein: and a fifth filter (4) is also arranged on a connecting pipeline between the liquid supplementing pump set II (5) and the tubular one-way valve (21).
9. The multifunctional adjustable pressure testing system of claim 1, wherein: and a third pressure gauge (17) is arranged on a connecting pipeline between the plate type one-way valve (16) and the P port of the servo valve (19).
10. The multifunctional adjustable pressure testing system of claim 1, wherein: a waste liquid receiving box is arranged on the periphery of the piece to be tested, an oil return opening at the bottom of the waste liquid receiving box is connected back to the high-temperature groove (1) through a pipeline, and a pump and a valve are arranged on the pipeline.
11. The testing method of the multifunctional adjustable pressure testing system according to claim 1, characterized in that:
firstly, a high-pressure open control subsystem: firstly, a high-pressure pump extracts high-temperature oil from a high-temperature tank, a piece to be tested is filled with the high-temperature oil to be emptied, and when the piece to be tested is emptied, the pneumatic control ball valve I, the pneumatic control ball valve II and the manual switch valve are all in an open state; then, adjusting an electric signal of the electromagnetic proportional overflow valve according to the pressure required by the test and the real-time data feedback of the pressure sensor to realize the required pressure waveform, and meeting the test temperature required by the to-be-tested piece by adjusting the heating temperature of the oil liquid in the high-temperature tank; the energy accumulator I is used as an auxiliary energy source in the boosting process to realize the required boosting rate; the high-temperature tank provides required high-temperature oil for the test system;
secondly, a servo control subsystem: before a cyclic test, a pneumatic control ball valve II at the outlet of a to-be-tested piece is in an open state, a manual switch valve is in an open state, a pneumatic control ball valve I is in a closed state, a high-pressure pump and a fluid infusion pump set I are both in a closed state, and a fluid infusion pump set II is started to convey high-temperature oil into the to-be-tested piece for thorough evacuation; after emptying, the main pump group is opened to provide a pressure source, system pressure is set by adjusting the electromagnetic proportional overflow valve II, and the system pressure is changed into an alternating power source by controlling the forward and reverse switching of the pressure cylinder through the servo valve, so that a to-be-tested piece end obtains a required high-frequency pulse test pressure curve, and the frequency is controlled by the servo valve.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111999027A (en) * | 2020-08-05 | 2020-11-27 | 天津格特斯检测设备技术开发有限公司 | Dual-system servo pulse high-frequency vibration test equipment |
| CN112729676A (en) * | 2020-12-30 | 2021-04-30 | 深圳市弗赛特科技股份有限公司 | Pressure transmitter calibration stand |
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| PL161705B1 (en) * | 1990-03-12 | 1993-07-30 | Ct Kt Maszyn Gorniczych Komag | Test stand for testing high-pressure hoses |
| RO121945B1 (en) * | 2001-01-19 | 2008-08-29 | Hydramold S.R.L. | Aggregate for testing deep-well pumps |
| CN105352812A (en) * | 2015-12-10 | 2016-02-24 | 南京依维柯汽车有限公司 | Testing device for blasting, pressure resistant and swelling amount of automobile flexible brake hose |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111999027A (en) * | 2020-08-05 | 2020-11-27 | 天津格特斯检测设备技术开发有限公司 | Dual-system servo pulse high-frequency vibration test equipment |
| CN112729676A (en) * | 2020-12-30 | 2021-04-30 | 深圳市弗赛特科技股份有限公司 | Pressure transmitter calibration stand |
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| Publication number | Publication date |
|---|---|
| CN110823487B (en) | 2022-01-18 |
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