CN114439815A - Test system and test host for rotary buffer valve - Google Patents
Test system and test host for rotary buffer valve Download PDFInfo
- Publication number
- CN114439815A CN114439815A CN202210087443.3A CN202210087443A CN114439815A CN 114439815 A CN114439815 A CN 114439815A CN 202210087443 A CN202210087443 A CN 202210087443A CN 114439815 A CN114439815 A CN 114439815A
- Authority
- CN
- China
- Prior art keywords
- oil
- valve
- port
- main
- reversing valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 68
- 239000003921 oil Substances 0.000 claims description 500
- 230000001105 regulatory effect Effects 0.000 claims description 55
- 238000001514 detection method Methods 0.000 claims description 20
- 239000010720 hydraulic oil Substances 0.000 claims description 15
- 230000007547 defect Effects 0.000 abstract description 2
- 230000001276 controlling effect Effects 0.000 description 6
- 238000005553 drilling Methods 0.000 description 4
- 230000002457 bidirectional effect Effects 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007935 neutral effect Effects 0.000 description 2
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B13/00—Details of servomotor systems ; Valves for servomotor systems
- F15B13/02—Fluid distribution or supply devices characterised by their adaptation to the control of servomotors
- F15B13/021—Valves for interconnecting the fluid chambers of an actuator
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Fluid-Pressure Circuits (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention provides a test system and a test host for a rotary buffer valve, wherein the test system for the rotary buffer valve comprises: the pressure and the flow of the main oil supply oil way and the pressure and the flow of the pilot oil supply oil way are configured to be adjustable; an oil return path; the oil outlet end of the main oil supply oil path is communicated with at most one of the C1 oil port, the V1 oil port, the C2 oil port and the V2 oil port through the reversing valve assembly, the oil outlet end of the pilot oil supply oil path is communicated with at most one of the V1 oil port and the V2 oil port through the reversing valve assembly, and the oil inlet end of the oil return oil path is communicated with at most one of the C1 oil port, the V1 oil port, the C2 oil port and the V2 oil port through the reversing valve assembly. The device can comprehensively test the performance of the rotary buffer valve, and overcomes the defect that the balance valve testing device in the prior art cannot detect the performance of the rotary buffer valve.
Description
Technical Field
The invention relates to the technical field of balance valve testing, in particular to a testing system and a testing host machine for a rotary buffer valve.
Background
The rotary buffer valve used by the rotary drilling rig is a bidirectional balance valve, plays an important role in the rotary performance of the rotary drilling rig, and therefore the performance of the rotary drilling rig needs to be comprehensively tested and evaluated.
In the prior art, test devices for testing the performance of the balance valve exist, but the test devices are only suitable for the one-way balance valve, can not test the rotary buffer valve, and can not obtain the performance of the rotary buffer valve.
Disclosure of Invention
Therefore, the technical problem to be solved by the present invention is to overcome the defect that the balance valve testing device in the prior art cannot detect the performance of the rotary cushion valve, so as to provide a testing system for the rotary cushion valve and a testing host.
In order to solve the above problems, the present invention provides a system for testing a rotary cushion valve, which is used for testing the operating characteristics of the rotary cushion valve, wherein the rotary cushion valve includes a C1 oil port, a V1 oil port, a C2 oil port and a V2 oil port. The test system for the rotary cushion valve comprises a main oil supply oil way, a pilot oil supply oil way, an oil return oil way and a reversing valve assembly. The main oil supply oil path and the pilot oil supply oil path are arranged in parallel, and the pressure and the flow of the main oil supply oil path and the pressure and the flow of the pilot oil supply oil path are configured to be adjustable. The oil outlet end of the main oil supply oil path is communicated with at most one of the C1 oil port, the V1 oil port, the C2 oil port and the V2 oil port through the reversing valve assembly, the oil outlet end of the pilot oil supply oil path is communicated with at most one of the V1 oil port and the V2 oil port through the reversing valve assembly, and the oil inlet end of the oil return oil path is communicated with at most one of the C1 oil port, the V1 oil port, the C2 oil port and the V2 oil port through the reversing valve assembly.
Optionally, the test system for a rotary cushion valve further comprises a detection assembly, and the detection assembly comprises a pressure detection piece and a flow detection piece. The four pressure detection pieces are respectively connected with the C1 oil port, the V1 oil port, the C2 oil port and the V2 oil port in a one-to-one correspondence manner; and the flow detection piece is arranged on the oil return oil path.
Optionally, the main oil supply path includes a first proportional pressure regulating valve and a first proportional flow regulating valve, and the first proportional pressure regulating valve and the first proportional flow regulating valve are configured to respectively and correspondingly regulate the pressure and the flow of the main oil supply path; and/or the pilot oil supply oil path comprises a second proportional pressure regulating valve and a second proportional flow regulating valve, and the second proportional pressure regulating valve and the second proportional flow regulating valve are used for respectively and correspondingly regulating the pressure and the flow of the pilot oil supply oil path.
Optionally, the reversing valve assembly includes a first reversing valve, a second reversing valve, a third reversing valve, a fourth reversing valve, and a main reversing valve. The first reversing valve is connected with the oil port C1 to control the on/off of the oil port C1; the second reversing valve is connected with the V1 oil port to control the V1 oil port to be switched on or switched off; the third reversing valve is connected with the oil port C2 to control the on/off of the oil port C2; the fourth reversing valve is connected with the V2 oil port to control the opening or closing of the V2 oil port. One of the first reversing valve and the second reversing valve is connected with the oil outlet end of the main oil supply oil way through the main reversing valve, and the other one of the first reversing valve and the second reversing valve is connected with the oil inlet end of the oil return oil way through the main reversing valve; or one of the third reversing valve and the fourth reversing valve is connected with the oil outlet end of the main oil supply oil way through the main reversing valve, and the other one of the third reversing valve and the fourth reversing valve is connected with the oil inlet end of the oil return oil way through the main reversing valve.
Optionally, the main directional control valve at least comprises two working positions and four oil ports, a first oil port and a second oil port of the main directional control valve are respectively connected with an oil outlet end of the main oil supply line and an oil inlet end of the oil return line in a one-to-one correspondence manner, a third oil port of the main directional control valve is respectively connected with the first directional control valve and the third directional control valve, and a fourth oil port of the main directional control valve is respectively connected with the second directional control valve and the fourth directional control valve. The first oil port of the main reversing valve is communicated with the third oil port of the main reversing valve, and the second oil port of the main reversing valve is communicated with the fourth oil port of the main reversing valve; and in the second working position of the main reversing valve, the first oil port of the main reversing valve is communicated with the fourth oil port of the main reversing valve, and the second oil port of the main reversing valve is communicated with the third oil port of the main reversing valve.
Optionally, the reversing valve assembly further comprises a pilot reversing valve, and an oil supply end of the pilot oil supply path is connected with the second reversing valve or the fourth reversing valve through the pilot reversing valve.
Optionally, the pilot operated directional control valve at least comprises two working positions and three oil ports, a first oil port of the pilot operated directional control valve is connected with an oil outlet end of the pilot operated oil supply line, a second oil port of the pilot operated directional control valve is connected with the second directional control valve, and a third oil port of the pilot operated directional control valve is connected with the fourth directional control valve. The first oil port of the pilot reversing valve is communicated with the third oil port of the pilot reversing valve at the first working position of the pilot reversing valve; and in the second working position of the pilot reversing valve, the first oil port of the pilot reversing valve is communicated with the second oil port of the pilot reversing valve.
Optionally, a first check valve is arranged on the main oil supply line to control hydraulic oil in the main oil supply line to flow to the reversing valve assembly and stop reversely; and/or a second check valve is arranged on the pilot oil supply circuit to control the hydraulic oil in the pilot oil supply circuit to flow to the reversing valve assembly and be reversely cut off.
Optionally, a first filter is arranged on the main oil supply path; and/or a second filter is arranged on the pilot oil supply oil circuit; and/or a cooler is arranged on the oil return way.
The invention also provides a test host which comprises the test system for the rotary buffer valve.
The invention has the following advantages:
1. through the cooperation between main oil supply oil circuit, reversing valve subassembly and the oil return oil circuit, can realize: an oil inlet is formed in a C1 oil port (or a C2 oil port), and an oil return is formed in a V1 oil port (or a V2 oil port), namely the oil is supplied to a main valve core of a balance valve in the rotary cushion valve; the oil is fed from the V1 oil port (or the V2 oil port), and is returned from the C1 oil port (or the C2 oil port), namely the oil is supplied to the one-way valve core of the balance valve. Meanwhile, through the cooperation of the pilot oil supply path and the reversing valve component, the V2 oil port (or the V1 oil port) can supply oil for the pilot loop of the balance valve, so that the main valve core of the balance valve is connected with pilot pressure. On the basis, the main valve core or the one-way valve core of any balance valve in the rotary buffer valve can be tested by adjusting the pressure and the flow of the main oil supply oil path and the pilot oil supply oil path, so that the performance of the rotary buffer valve is obtained.
2. The pressure of the C1 oil port, the V1 oil port, the C2 oil port and the V2 oil port and the flow of the oil return path can be detected through the pressure detection assembly, so that for any balance valve in the rotary cushion valve, the following can be obtained: when there is no pilot pressure, the opening pressure of the main valve core; ensuring the pilot pressure for opening the main valve core; the flow-pressure drop curve of the main spool; flow-pressure drop curve for a one-way valve cartridge.
3. The automatic proportional control of the pressure and the flow of the main oil supply oil way can be realized through the first proportional pressure regulating valve and the first proportional flow regulating valve, the automatic proportional control of the pressure and the flow of the pilot oil supply oil way can be realized through the second proportional pressure regulating valve and the second proportional flow regulating valve, the testing efficiency is higher, and the data accuracy is higher.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 shows a schematic diagram of a connection pipeline between a test system for a rotary cushion valve and the rotary cushion valve provided by the invention.
Description of the reference numerals:
10. a rotary cushion valve; 11. c1 oil port; 12. a V1 oil port; 13. c2 oil port; 14. a V2 oil port; 15. a first counter-balance valve; 16. a second balancing valve; 20. a main oil supply path; 21. a first proportional pressure regulating valve; 22. a first proportional flow control valve; 23. a first check valve; 24. a first filter; 25. a main pump; 30. a pilot oil supply path; 31. a second proportional pressure regulating valve; 32. a second proportional flow control valve; 33. a second check valve; 34. a second filter; 35. a pilot pump; 40. an oil return path; 41. a cooler; 50. a reversing valve assembly; 51. a first direction changing valve; 52. a second directional control valve; 53. a third directional control valve; 54. a fourth directional control valve; 55. a main directional control valve; 56. a pilot operated directional control valve; 60. a detection component; 61. a pressure detecting member; 62. a flow rate detecting member; 70. and an oil tank.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
For the rotary cushion valve 10, the valve block is formed by integrating two balance valves, and the rotary cushion valve is a bidirectional balance valve with a symmetrical structure. Referring to fig. 1, the rotary cushion valve 10 includes a C1 port 11, a V1 port 12, a C2 port 13, and a V2 port 14. As in the prior art, a first balance valve 15 is formed between the C1 port 11 and the V1 port 12, and a second balance valve 16 is formed between the C2 port 13 and the V2 port 14.
In the rotary drilling rig, a V oil port (comprising a V1 oil port 12 and a V2 oil port 14) of a rotary cushion valve 10 is connected with a reversing valve of a main machine, and a C oil port (comprising a C1 oil port 11 and a C2 oil port 13) of the rotary cushion valve 10 is connected with an oil inlet and return cavity of a rotary motor. Supposing that the main machine is operated to rotate and start and normally rotate, at the moment, high-pressure oil enters from a V1 oil port 12, passes through a one-way valve core of a first balance valve 15 and then enters a left cavity of a rotary motor, and meanwhile, the high-pressure oil is introduced into a pilot cavity of a second balance valve 16 through a pilot circuit a in the first balance valve 15, so that the second balance valve 16 is completely opened, and the normal rotation of the main machine is ensured; when the rotation is stopped, the reversing valve is operated to reverse, the high-pressure oil in the V1 oil port 12 disappears, the pressure of the pilot circuit a of the first balance valve 15 disappears, the second balance valve 16 is closed, the opening of the second balance valve needs the high-pressure oil in the C2 oil port 13 to overcome the set pressure, namely, the right cavity of the rotation motor generates high pressure, and the rotation brake is performed. The principle of reverse rotation is the same, and is not described herein again.
To fully test the performance of the rotary cushion valve 10, the present embodiment provides a test system for a rotary cushion valve. As shown in fig. 1, the test system for the rotary cushion valve includes a main oil supply passage 20, a pilot oil supply passage 30, an oil return passage 40, and a reversing valve assembly 50.
The main oil supply passage 20 and the pilot oil supply passage 30 are provided in parallel. A first proportional pressure regulating valve 21 and a first proportional flow rate regulating valve 22 are provided in the main oil supply passage 20, the first proportional pressure regulating valve 21 regulating the pressure in the main oil supply passage 20, and the first proportional flow rate regulating valve 22 regulating the flow rate in the main oil supply passage 20. The pilot oil supply passage 30 is provided with a second proportional pressure regulating valve 31 and a second proportional flow rate regulating valve 32, the second proportional pressure regulating valve 31 being for regulating the pressure of the pilot oil supply passage 30, and the second proportional flow rate regulating valve 32 being for regulating the flow rate of the pilot oil supply passage 30.
In this embodiment, the oil outlet end of the main oil supply path 20 is communicated with at most one of the C1 oil port 11, the V1 oil port 12, the C2 oil port 13 and the V2 oil port 14 through the reversing valve assembly 50, the oil outlet end of the pilot oil supply path 30 is communicated with at most one of the V1 oil port 12 and the V2 oil port 14 through the reversing valve assembly 50, and the oil inlet end of the oil return path 40 is communicated with at most one of the C1 oil port 11, the V1 oil port 12, the C2 oil port 13 and the V2 oil port 14 through the reversing valve assembly 50.
At this time, with the first balance valve 15, by the cooperation between the main oil supply passage 20, the selector valve assembly 50, and the oil return passage 40: an oil inlet 11 of the C1 oil port returns oil to an oil port 12 of the V1 oil port, namely the oil is supplied to the main valve core of the first balance valve 15; the oil is fed from the oil port 12 of V1, and is returned from the oil port 11 of C1, that is, the oil is supplied to the check valve core of the first balance valve 15. Meanwhile, by the cooperation of the pilot oil supply passage 30 and the reversing valve assembly 50, the V2 oil port 14 can supply oil to the pilot circuit a of the first balance valve 15, so that the main valve core of the first balance valve 15 is connected to the pilot pressure. On the basis, the main spool or the check spool of the first balance valve 15 can be tested by adjusting the pressure and the flow rate of the main oil supply path 20 and the pilot oil supply path 30, so that the performance of the first balance valve 15 is obtained.
Similarly, for the second counter balance valve 16, it is possible to: oil is fed from an oil port 13 of the C2, and oil is fed from an oil port 14 of the V2, namely the oil is supplied to the main valve core of the second balance valve 16; the oil is fed from the oil port 14 of V2, and is returned from the oil port 13 of C2, that is, the oil is supplied to the check valve core of the second balance valve 16. Meanwhile, the V1 oil port 12 supplies oil to the pilot circuit a of the second counter balance valve 16, so that the main spool of the second counter balance valve 16 is connected to the pilot pressure. On the basis, the main spool or the check spool of the second balance valve 16 can be tested by adjusting the pressure and the flow rate of the main oil supply path 20 and the pilot oil supply path 30, so that the performance of the second balance valve 16 is obtained.
It will be appreciated that the overall performance of the rotary cushion valve 10 is achieved when the performance tests of both the first and second trim valves 15, 16 are completed.
Preferably, the first proportional pressure regulating valve 21 and the second proportional pressure regulating valve 31 are both set as proportional relief valves, and the first proportional flow regulating valve 22 and the second proportional flow regulating valve 32 are both set as proportional throttle valves, so that automatic proportional control of pressure and flow of corresponding oil paths can be realized, the test efficiency is higher, and the data accuracy is higher.
As shown in fig. 1, the test system for a rotary cushion valve further includes a detection assembly 60, and the detection assembly 60 includes a pressure detection member 61 and a flow detection member 62. The four pressure detection pieces 61 are respectively connected with the C1 oil port 11, the V1 oil port 12, the C2 oil port 13 and the V2 oil port 14 in a one-to-one correspondence manner, so as to respectively measure the pressures of the C1 oil port 11, the V1 oil port 12, the C2 oil port 13 and the V2 oil port 14. A flow rate detecting member 62 is provided on the oil return passage 40 to detect the system flow rate. In this embodiment, the pressure detecting members 61 are each provided as a pressure sensor, and the flow rate detecting member 62 is provided as a flow meter.
At this time, the following tests can be achieved for both the first and second balancing valves 15, 16: when there is no pilot pressure, the opening pressure of the main valve core; ensuring the pilot pressure for opening the main valve core; a flow-pressure drop curve for the main spool; flow-pressure drop curve for a one-way valve cartridge.
Here, the corresponding detection process of the above test contents is explained by taking the first balance valve 15 as an example:
1. and (3) testing the opening pressure of the main valve core when no pilot pressure exists:
(1) controlling an oil inlet of an oil port 11 of C1, an oil return of an oil port 12 of V1, and stopping both an oil port 13 of C2 and an oil port 14 of V2;
(2) adjusting the opening of a first proportional flow regulating valve 22, and controlling the flow of the main oil supply line 20 to be 10% of the rated flow;
(3) the pressure of the first proportional pressure regulating valve 21 is regulated to be gradually increased from 0 until the flow rate shown by the flow rate detecting part 62 is 10% of the rated flow rate, and the pressure at the oil port 11 of C1 is recorded;
(4) repeating the step (3), testing for multiple times (preferably 5 times), and taking an average value.
2. And (3) testing the pilot pressure for ensuring the opening of the main valve core:
(1) controlling the oil inlet of an oil port 11 of C1, returning oil of an oil port 12 of V1, simultaneously feeding oil of an oil port 14 of V2 to access pilot pressure, and stopping the oil port 13 of C2;
(2) the opening degree of the first proportional flow regulating valve 22 is regulated, and the flow of the main oil supply oil path 20 is controlled to be 10% of the rated flow;
(3) the pressure of the second proportional pressure regulating valve 31 is regulated to gradually increase from 0 until the flow rate shown by the flow rate detecting part 62 is 10% of the rated flow rate, and the pressure at the oil port 14 of V2 is recorded;
(4) repeating the step (3), testing for multiple times (preferably 5 times), and taking an average value.
3. Testing the flow-pressure drop curve of the main valve core:
(1) controlling the oil inlet of an oil port 11 of C1, returning oil of an oil port 12 of V1, simultaneously feeding oil of an oil port 14 of V2 to access pilot pressure, and stopping the oil port 13 of C2;
(2) adjusting the pressure of the second proportional pressure regulating valve 31 to be greater than the pilot pressure ensuring the opening of the main spool (this value can be measured by the aforesaid test), keeping the first balancing valve 15 fully open;
(3) adjusting the opening of the first proportional flow regulating valve 22 to increase the system flow Q from 0 to the rated flow, and recording the pressures at the V1 oil port 12 and the C1 oil port 11 to obtain the pressure difference Δ P between the V1 oil port 12 and the C1 oil port 11;
(4) and (4) repeating the step (3), testing for multiple times (preferably 5 times), and fitting the flow Q and the pressure difference delta P.
4. And (3) testing a flow-pressure drop curve of the one-way valve core:
(1) controlling the oil inlet of an oil port 12 of V1, the oil return of an oil port 11 of C1, and the oil ports 13 and 14 of C2 and V2 to be cut off;
(2) adjusting the opening of the first proportional flow regulating valve 22 to increase the system flow Q from 0 to the rated flow, and recording the pressures at the C1 oil port 11 and the V1 oil port 12 to obtain the pressure difference Δ P between the C1 oil port 11 and the V1 oil port 12;
(3) and (3) repeating the step (2), testing for multiple times (preferably 5 times), and fitting the flow Q and the pressure difference delta P.
For the second counter balance valve 16, the test method is substantially the same as for the first counter balance valve 15, except that the port connections are different:
(1) when the pilot pressure is not available, the opening pressure test of the main valve core controls the oil inlet of the C2 oil port 13 and the oil return of the V2 oil port 14, and the C1 oil port 11 and the V1 oil port 12 are both cut off;
(2) when the pilot pressure for opening the main valve core is ensured in a test, controlling the oil inlet of an oil port 13C 2, the oil return of an oil port 14V 2, the oil inlet of an oil port 12V 1 to access the pilot pressure, and the oil port 11C 1 to be cut off;
(3) when a flow-pressure drop curve of the main valve core is tested, oil is fed from an oil port 13C 2, oil is fed from an oil port 14V 2, oil is fed from an oil port 12V 1 to access pilot pressure, and the oil port 11C 1 is cut off;
(4) when a flow-pressure drop curve of the one-way valve core is tested, oil is fed into the oil port 14 of the V2, oil is fed back into the oil port 13 of the C2, and the oil ports 11 and 12 of the C1 and the V1 are both cut off.
Regarding the composition of the reversing valve assembly 50, as shown in fig. 1, the reversing valve assembly 50 includes a first reversing valve 51, a second reversing valve 52, a third reversing valve 53, and a fourth reversing valve 54. The first reversing valve 51 is connected with the C1 oil port 11 to control the connection or disconnection of the C1 oil port 11, the second reversing valve 52 is connected with the V1 oil port 12 to control the connection or disconnection of the V1 oil port 12, the third reversing valve 53 is connected with the C2 oil port 13 to control the connection or disconnection of the C2 oil port 13, and the fourth reversing valve 54 is connected with the V2 oil port 14 to control the connection or disconnection of the V2 oil port 14.
The reversing valve assembly 50 also includes a main reversing valve 55. In one connection situation, one of the first and second directional valves 51 and 52 may be connected to the oil outlet of the main oil supply path 20 through the main directional valve 55, and the other of the first and second directional valves 51 and 52 may be connected to the oil inlet of the oil return path 40 through the main directional valve 55, so as to achieve oil inlet from the C1 port 11 and oil return from the V1 port 12, or oil inlet from the V1 port 12 and oil return from the C1 port 11.
In another connection situation, one of the third directional valve 53 and the fourth directional valve 54 may be connected to the oil outlet of the main oil supply path 20 through the main directional valve 55, and the other of the third directional valve 53 and the fourth directional valve 54 may be connected to the oil inlet of the oil return path 40 through the main directional valve 55, so as to achieve the oil inlet of the C2 oil port 13 and the oil return of the V2 oil port 14, or the oil inlet of the V2 oil port 14 and the oil return of the C2 oil port 13.
Preferably, the main directional control valve 55 includes at least two working positions and four oil ports. A first port of the main directional control valve 55 is connected to an oil outlet of the main oil supply passage 20, a second port of the main directional control valve 55 is connected to an oil inlet of the oil return passage 40, a third port of the main directional control valve 55 is connected to the first directional control valve 51 and the third directional control valve 53, and a fourth port of the main directional control valve 55 is connected to the second directional control valve 52 and the fourth directional control valve 54.
In the first operating position of the main directional control valve 55, the first oil port of the main directional control valve 55 is communicated with the third oil port of the main directional control valve 55, and the second oil port of the main directional control valve 55 is communicated with the fourth oil port of the main directional control valve 55. At this time, the outlet end of the main oil supply passage 20 may communicate with the C1 port 11 or the C2 port 13 through the main directional control valve 55, and the inlet end of the oil return passage 40 may communicate with the V1 port 12 or the V2 port 14 through the main directional control valve 55.
In the second operating position of the main directional control valve 55, the first port of the main directional control valve 55 is communicated with the fourth port of the main directional control valve 55, and the second port of the main directional control valve 55 is communicated with the third port of the main directional control valve 55. At this time, the outlet end of the main oil supply passage 20 may be connected to the V1 port 12 or the V2 port 14 through the main directional control valve 55, and the inlet end of the return oil passage 40 may be connected to the C1 port 11 or the C2 port 13 through the main directional control valve 55.
In this embodiment, the main directional control valve 55 is an O-type three-position four-way valve. Referring to fig. 1, the first working position of the main directional control valve 55 is the right position of the main directional control valve 55; the second operating position of the main directional control valve 55 is the left position of the main directional control valve 55. At this time, the main directional control valve 55 also has a third operating position, i.e., a neutral position of the main directional control valve 55. When the main directional control valve 55 is in the neutral position, the oil ports of the main directional control valve 55 are all closed.
As shown in fig. 1, the reversing valve assembly 50 further includes a pilot reversing valve 56, and the oil supply end of the pilot oil supply path 30 is connected to the second reversing valve 52 or the fourth reversing valve 54 through the pilot reversing valve 56. At this time, the outlet end of the pilot oil supply passage 30 can communicate with the V1 port 12 or the V2 port 14 through the pilot selector valve 56, so that the rotary cushion valve 10 is supplied with the pilot pressure.
Preferably, the pilot operated directional valve 56 includes at least two work positions and three ports. A first port of the pilot switching valve 56 is connected to the oil outlet end of the pilot oil supply passage 30, a second port of the pilot switching valve 56 is connected to the second switching valve 52, and a third port of the pilot switching valve 56 is connected to the fourth switching valve 54.
In the first operating position of the pilot switching valve 56, the first port of the pilot switching valve 56 is communicated with the third port of the pilot switching valve 56, so that the outlet end of the pilot oil supply passage 30 can be communicated with the V2 port 14. In the second operating position of the pilot switching valve 56, the first port of the pilot switching valve 56 and the second port of the pilot switching valve 56 are communicated with each other, and the outlet end of the pilot oil supply passage 30 can be communicated with the V1 port 12.
In this embodiment, the pilot switching valve 56 is provided as a two-position three-way electromagnetic valve. Referring to fig. 1, the first operating position of the pilot switching valve 56 is a left position of the pilot switching valve 56; the second operating position of the pilot switching valve 56 described above is the right position of the pilot switching valve 56.
Further, the first direction valve 51 and the third direction valve 53 are both provided as two-position two-way solenoid valves having the same structure, and the second direction valve 52 and the fourth direction valve 54 are both provided as three-position three-way solenoid valves having the same structure.
Referring to fig. 1, for the first direction valve 51, the oil ports thereof are all cut off at the left position; when the oil pump is in the right position, the first oil port and the second oil port of the oil pump are communicated. The operating position of the third direction valve 53 is set to be the same as that of the first direction valve 51. For the second reversing valve 52, in the left position, the first oil port and the third oil port of the second reversing valve are communicated, and the second oil port is closed; when the oil pump is in a middle position, the first oil port of the oil pump is closed, and the second oil port is communicated with the third oil port; and when the oil port is positioned at the right position, the oil ports of the oil pump are all cut off. The operating position of the fourth direction valve 54 is set the same as the second direction valve 52.
As can be understood from fig. 1, in this embodiment, the oil ports of the reversing valve are defined as a first oil port, a second oil port, a third oil port and a fourth oil port in the order of lower left, lower right, upper right and upper left.
In general, the connections between the directional valves in the directional valve assembly 50 are arranged as follows: a first oil port of the main directional control valve 55 is connected with an oil outlet end of the main oil supply path 20, a second oil port of the main directional control valve 55 is connected with an oil inlet end of the oil return path 40, a third oil port of the main directional control valve 55 is respectively connected with a first oil port of the first directional control valve 51 and a first oil port of the fourth directional control valve 54, and a fourth oil port of the main directional control valve 55 is respectively connected with a first oil port of the second directional control valve 52 and a first oil port of the third directional control valve 53; the second port of the first directional valve 51 is connected to the port C1 11; a second oil port of the second reversing valve 52 is connected with a second oil port of the sixth reversing valve, and a third oil port of the second reversing valve 52 is connected with the V1 oil port 12; the second port of the third reversing valve 53 is connected with the port C2, the second port of the fourth reversing valve 54 is connected with the second port of the sixth reversing valve, and the third port of the fourth reversing valve 54 is connected with the port V2 14; the first port of the pilot switching valve 56 is connected to the oil outlet end of the pilot oil supply passage 30.
Finally, other arrangements of the rotary damper valve test system will be described.
As shown in fig. 1, a main pump 25 is provided at an oil inlet end of the main oil supply passage 20, and a pilot pump 35 is provided at an oil inlet end of the pilot oil supply passage 30. In the present embodiment, the main pump 25 and the pilot pump 35 are both driven by electric motors. Further, an oil tank 70 is further arranged in the test system for the rotary cushion valve, and the main pump 25 and the pilot pump 35 are respectively connected with the oil tank 70 to supply oil to the main oil supply path 20 and the pilot oil supply path 30; the oil outlet end of the oil return passage 40 is connected to the oil tank 70 so that the hydraulic oil flows back to the oil tank 70.
Optionally, a first check valve 23 is provided on the main oil supply path 20, and the flow of the hydraulic oil in the main oil supply path 20 to the reversing valve assembly 50 can be controlled by the first check valve 23 to prevent the hydraulic oil from flowing back. In addition, a first filter 24 may be disposed on the main oil supply path 20 to filter the hydraulic oil to ensure the cleanliness of the hydraulic oil. In the present embodiment, the main pump 25, the first filter 24, the first check valve 23, the first proportional flow regulating valve 22, and the main directional control valve 55 are connected in series in this order.
Optionally, a second check valve 33 is disposed on the pilot oil supply path 30, and the hydraulic oil in the pilot oil supply path 30 can be controlled to flow to the reversing valve assembly 50 through the second check valve 33, so as to prevent the hydraulic oil from flowing back. In addition, with reference to the arrangement of the first filter 24, a second filter 34 may be provided on the pilot oil supply path 30 to filter the hydraulic oil to ensure the cleanliness of the oil. In the present embodiment, the pilot pump 35, the second filter 34, the second check valve 33, the second proportional flow rate adjustment valve 32, and the pilot selector valve 56 are connected in series in this order.
Referring to fig. 1, a cooler 41 may be further disposed on the oil return path 40 to cool the hydraulic oil when the hydraulic oil flows back to the oil tank 70, so as to prevent the hydraulic oil with an excessively high temperature from flowing into the test system again, and avoid an excessively high system pressure.
The embodiment also provides a test host which comprises the test system for the rotary buffering valve.
The test host further comprises a controller and a first data interface, wherein the controller is respectively connected with the first proportional pressure regulating valve 21, the first proportional flow regulating valve 22, the second proportional pressure regulating valve 31, the second proportional flow regulating valve 32, each reversing valve in the reversing valve assembly 50, the main pump 25, the pilot pump 35, the cooler 41 and the like through the first data interface so as to control the operation of the above elements and realize the test of the rotary cushion valve.
Further, the test host further comprises a data acquisition system and a second data interface, wherein the data acquisition system is connected with the pressure detection piece 61, the flow detection piece 62 and the like through the second data interface so as to acquire data such as pressure, flow and the like.
According to the above description, the present application has the following advantages:
(1) the rotary buffer valve 10 can be tested comprehensively to obtain key performance parameters of the rotary buffer valve 10;
(2) the whole test system for the rotary buffer valve can realize automatic control, and has higher test efficiency and higher data accuracy.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A test system for a rotary cushion valve, which is used for testing the working characteristics of the rotary cushion valve (10), wherein the rotary cushion valve (10) comprises a C1 oil port (11), a V1 oil port (12), a C2 oil port (13) and a V2 oil port (14), and the test system for the rotary cushion valve is characterized by comprising:
the oil supply device comprises a main oil supply oil path (20), a pilot oil supply oil path (30) and an oil return oil path (40), wherein the main oil supply oil path (20) and the pilot oil supply oil path (30) are arranged in parallel, and the pressure and the flow of the main oil supply oil path (20) and the pressure and the flow of the pilot oil supply oil path (30) are both configured to be adjustable;
the oil outlet end of the main oil supply line (20) is communicated with the C1 oil port (11), the V1 oil port (12), the C2 oil port (13) and at most one of the V2 oil ports (14) through the reversing valve assembly (50), the oil outlet end of the pilot oil supply line (30) is communicated with the V1 oil port (12) and at most one of the V2 oil ports (14), and the oil inlet end of the oil return line (40) is communicated with the C1 oil port (11), the V1 oil port (12), the C2 oil port (13) and at most one of the V2 oil ports (14) through the reversing valve assembly (50).
2. The testing system for rotary cushion valves of claim 1, further comprising a detection assembly (60), the detection assembly (60) comprising:
the four pressure detection pieces (61) are respectively connected with the C1 oil port (11), the V1 oil port (12), the C2 oil port (13) and the V2 oil port (14) in a one-to-one correspondence manner;
and a flow rate detection member (62) provided on the oil return passage (40).
3. The testing system for a rotary cushion valve according to claim 1, wherein the main oil supply line (20) comprises a first proportional pressure regulating valve (21) and a first proportional flow regulating valve (22), the first proportional pressure regulating valve (21) and the first proportional flow regulating valve (22) being configured to correspondingly regulate the pressure and the flow of the main oil supply line (20), respectively; and/or
The pilot oil supply path (30) comprises a second proportional pressure regulating valve (31) and a second proportional flow regulating valve (32), and the second proportional pressure regulating valve (31) and the second proportional flow regulating valve (32) are used for respectively and correspondingly regulating the pressure and the flow of the pilot oil supply path (30).
4. The rotary cushion valve testing system of claim 1, wherein the reversing valve assembly (50) comprises:
a first reversing valve (51) connected with the C1 oil port (11) to control the C1 oil port (11) to be switched on or switched off; the second reversing valve (52) is connected with the V1 oil port (12) to control the opening or closing of the V1 oil port (12); a third reversing valve (53) connected with the C2 oil port (13) to control the conduction or the cut-off of the C2 oil port (13); a fourth reversing valve (54) connected with the V2 oil port (14) to control the opening or closing of the V2 oil port (14);
a main directional control valve (55), one of the first directional control valve (51) and the second directional control valve (52) is connected with the oil outlet end of the main oil supply path (20) through the main directional control valve (55), and the other is connected with the oil inlet end of the oil return path (40) through the main directional control valve (55); or one of the third reversing valve (53) and the fourth reversing valve (54) is connected with the oil outlet end of the main oil supply oil path (20) through the main reversing valve (55), and the other is connected with the oil inlet end of the oil return path (40) through the main reversing valve (55).
5. The testing system for the rotary cushion valve as claimed in claim 4, wherein the main directional control valve (55) comprises at least two working positions and four oil ports, a first oil port and a second oil port of the main directional control valve (55) are respectively connected with the oil outlet end of the main oil supply path (20) and the oil inlet end of the oil return path (40) in a one-to-one correspondence manner, a third oil port of the main directional control valve (55) is respectively connected with a first directional control valve (51) and a third directional control valve (53), and a fourth oil port of the main directional control valve (55) is respectively connected with a second directional control valve (52) and a fourth directional control valve (54);
in a first working position of the main reversing valve (55), a first oil port of the main reversing valve (55) is communicated with a third oil port of the main reversing valve (55), and a second oil port of the main reversing valve (55) is communicated with a fourth oil port of the main reversing valve (55); in a second working position of the main reversing valve (55), a first oil port of the main reversing valve (55) is communicated with a fourth oil port of the main reversing valve (55), and a second oil port of the main reversing valve (55) is communicated with a third oil port of the main reversing valve (55).
6. The test system for rotary cushion valves according to claim 4, wherein the reversing valve assembly (50) further comprises:
and the oil supply end of the pilot oil supply oil path (30) is connected with the second reversing valve (52) or the fourth reversing valve (54) through the pilot reversing valve (56).
7. The test system for the rotary cushion valve as claimed in claim 6, wherein the pilot reversing valve (56) comprises at least two working positions and three oil ports, a first oil port of the pilot reversing valve (56) is connected with the oil outlet end of the pilot oil supply path (30), a second oil port of the pilot reversing valve (56) is connected with the second reversing valve (52), and a third oil port of the pilot reversing valve (56) is connected with the fourth reversing valve (54);
in a first working position of the pilot reversing valve (56), a first oil port of the pilot reversing valve (56) is communicated with a third oil port of the pilot reversing valve (56); and in a second working position of the pilot reversing valve (56), a first oil port of the pilot reversing valve (56) is communicated with a second oil port of the pilot reversing valve (56).
8. The testing system for the rotary cushion valve as claimed in claim 1, wherein a first check valve (23) is arranged on the main oil supply path (20) to control the hydraulic oil in the main oil supply path (20) to flow to the reversing valve assembly (50) and to be cut off reversely; and/or
And a second check valve (33) is arranged on the pilot oil supply path (30) to control hydraulic oil in the pilot oil supply path (30) to flow to the reversing valve assembly (50) and be reversely cut off.
9. The testing system for rotary cushion valves according to claim 1, wherein a first filter (24) is provided on the main oil supply path (20); and/or
A second filter (34) is arranged on the pilot oil supply path (30); and/or
And a cooler (41) is arranged on the oil return way (40).
10. A test rig comprising a test system for a rotary damper valve according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087443.3A CN114439815B (en) | 2022-01-25 | 2022-01-25 | Test system and test host for rotary buffer valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210087443.3A CN114439815B (en) | 2022-01-25 | 2022-01-25 | Test system and test host for rotary buffer valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114439815A true CN114439815A (en) | 2022-05-06 |
| CN114439815B CN114439815B (en) | 2024-05-28 |
Family
ID=81369156
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210087443.3A Active CN114439815B (en) | 2022-01-25 | 2022-01-25 | Test system and test host for rotary buffer valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114439815B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259192A (en) * | 1990-11-30 | 1993-11-09 | Kabushiki Kaisha Komatsu Seisakusho | Hydraulic circuit system |
| CN102606558A (en) * | 2012-02-08 | 2012-07-25 | 北京首钢重型汽车制造股份有限公司 | Test bench for hydraulic system of mining dumper |
| CN102678677A (en) * | 2012-05-15 | 2012-09-19 | 贵州航天天马机电科技有限公司 | Hydraulic control type test method for hydraulic balance valve |
| CN202707661U (en) * | 2012-08-23 | 2013-01-30 | 中联重科股份有限公司渭南分公司 | Pilot buffer valve, buffer damping hydraulic control loop and engineering mechanical equipment |
| CN103471829A (en) * | 2013-09-05 | 2013-12-25 | 南京工业大学 | Multi-way valve test bed of hydraulic excavator |
| CN103629190A (en) * | 2013-11-29 | 2014-03-12 | 徐工集团工程机械股份有限公司 | Method and device for measuring load jittering caused by balance valve mismatching |
| CN103759930A (en) * | 2014-01-03 | 2014-04-30 | 武汉船用机械有限责任公司 | Transient test device and method of balance valve |
| CN104019075A (en) * | 2014-06-05 | 2014-09-03 | 常德中联重科液压有限公司 | Testing system of balance valve |
| CN105547670A (en) * | 2015-12-14 | 2016-05-04 | 徐州徐工液压件有限公司 | Balancing valve factory entry inspection device |
| US20200291971A1 (en) * | 2016-03-31 | 2020-09-17 | Tadano Ltd. | Failure detection device |
| CN211550119U (en) * | 2019-10-29 | 2020-09-22 | 徐州工程学院 | Control system for auxiliary maintenance service platform |
| US20210071689A1 (en) * | 2019-09-06 | 2021-03-11 | Zhejiang Dingli Machinery Co., Ltd | Control valve, derricking cylinder and working method thereof, aerial work platform |
| CN213054464U (en) * | 2020-07-31 | 2021-04-27 | 圣邦集团有限公司 | Tool for testing balance valve |
-
2022
- 2022-01-25 CN CN202210087443.3A patent/CN114439815B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5259192A (en) * | 1990-11-30 | 1993-11-09 | Kabushiki Kaisha Komatsu Seisakusho | Hydraulic circuit system |
| CN102606558A (en) * | 2012-02-08 | 2012-07-25 | 北京首钢重型汽车制造股份有限公司 | Test bench for hydraulic system of mining dumper |
| CN102678677A (en) * | 2012-05-15 | 2012-09-19 | 贵州航天天马机电科技有限公司 | Hydraulic control type test method for hydraulic balance valve |
| CN202707661U (en) * | 2012-08-23 | 2013-01-30 | 中联重科股份有限公司渭南分公司 | Pilot buffer valve, buffer damping hydraulic control loop and engineering mechanical equipment |
| CN103471829A (en) * | 2013-09-05 | 2013-12-25 | 南京工业大学 | Multi-way valve test bed of hydraulic excavator |
| CN103629190A (en) * | 2013-11-29 | 2014-03-12 | 徐工集团工程机械股份有限公司 | Method and device for measuring load jittering caused by balance valve mismatching |
| CN103759930A (en) * | 2014-01-03 | 2014-04-30 | 武汉船用机械有限责任公司 | Transient test device and method of balance valve |
| CN104019075A (en) * | 2014-06-05 | 2014-09-03 | 常德中联重科液压有限公司 | Testing system of balance valve |
| CN105547670A (en) * | 2015-12-14 | 2016-05-04 | 徐州徐工液压件有限公司 | Balancing valve factory entry inspection device |
| US20200291971A1 (en) * | 2016-03-31 | 2020-09-17 | Tadano Ltd. | Failure detection device |
| US20210071689A1 (en) * | 2019-09-06 | 2021-03-11 | Zhejiang Dingli Machinery Co., Ltd | Control valve, derricking cylinder and working method thereof, aerial work platform |
| CN211550119U (en) * | 2019-10-29 | 2020-09-22 | 徐州工程学院 | Control system for auxiliary maintenance service platform |
| CN213054464U (en) * | 2020-07-31 | 2021-04-27 | 圣邦集团有限公司 | Tool for testing balance valve |
Non-Patent Citations (2)
| Title |
|---|
| 宋文涛: "《液压平衡测试台》", 《计量与测试技术》, vol. 46, no. 10, 31 December 2019 (2019-12-31), pages 62 - 64 * |
| 宋文涛: "《液压平衡阀测试台》", 《计量与测试技术》, vol. 46, no. 10, 31 December 2019 (2019-12-31), pages 62 - 64 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114439815B (en) | 2024-05-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106949118B (en) | A kind of hydraulic cylinder durability testing stand | |
| US8215227B2 (en) | Detecting of faults in a valve system and a fault tolerant control | |
| US20110017310A1 (en) | Fluid valve arrangement | |
| US11149758B2 (en) | Control arrangement of a hydraulic system and a method for controlling a hydraulic system | |
| CN109780005B (en) | Load simulation system and control method of multi-way valve | |
| CN101324484A (en) | Hydraulic reverse valve oil head test control device | |
| CN203548388U (en) | Hydraulic loading circuit for multi-way valve | |
| CN112682373A (en) | Hydraulic system, control method and engineering vehicle | |
| CN114439815A (en) | Test system and test host for rotary buffer valve | |
| JP2000055002A (en) | Hydrostatic drive system | |
| CN105840566B (en) | Hydraulic control device for supplying at least two hydraulic consumers with a pressure medium | |
| US9810329B2 (en) | Valve group and inlet module of a valve group | |
| CN104653530A (en) | Hydraulic Control Assembly | |
| JPS61129494A (en) | Positive-displacement type air compressor | |
| JP2006505746A (en) | Hydraulic control device using load sensing technology | |
| CN110985461B (en) | Hydraulic motor control system | |
| CN103759930A (en) | Transient test device and method of balance valve | |
| CN110553834B (en) | Accelerated life test system for refrigeration valve | |
| CN111140567A (en) | Testing device for electromagnetic valve and valve body of automatic transmission of automobile | |
| CN220791645U (en) | Hydraulic valve testing device | |
| CN102536942B (en) | throttle circuit | |
| EP2833002A1 (en) | Control valve device for power shovel | |
| CN216742288U (en) | Engineering vehicle hydraulic system and engineering vehicle | |
| CN216666098U (en) | Universal test bench for hydraulic valve | |
| CN116838598A (en) | Test device and test method for load-sensitive variable pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |