CN109458364B - Hydraulic power unit for portable debugging - Google Patents
Hydraulic power unit for portable debugging Download PDFInfo
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- CN109458364B CN109458364B CN201811523559.7A CN201811523559A CN109458364B CN 109458364 B CN109458364 B CN 109458364B CN 201811523559 A CN201811523559 A CN 201811523559A CN 109458364 B CN109458364 B CN 109458364B
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- 239000003921 oil Substances 0.000 claims abstract description 147
- 238000001914 filtration Methods 0.000 claims abstract description 42
- 239000010720 hydraulic oil Substances 0.000 claims abstract description 26
- 239000007788 liquid Substances 0.000 claims description 22
- 239000012535 impurity Substances 0.000 claims description 6
- 239000007787 solid Substances 0.000 claims description 4
- 239000000428 dust Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 2
- 230000007246 mechanism Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 description 13
- 230000003749 cleanliness Effects 0.000 description 9
- 238000001514 detection method Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
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Classifications
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- 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
- F15B11/00—Servomotor systems without provision for follow-up action; Circuits therefor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
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- 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
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/04—Special measures taken in connection with the properties of the fluid
- F15B21/041—Removal or measurement of solid or liquid contamination, e.g. filtering
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- General Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Chemical & Material Sciences (AREA)
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- Fluid-Pressure Circuits (AREA)
Abstract
The invention provides a portable hydraulic pump station for debugging, which is characterized in that a first primary filter, an oil pump, a first fine filter, a first switch valve and a main reversing valve are sequentially connected through a pipeline, the first switch valve is in a normally open state, the main reversing valve is connected with a first external connector C and a second external connector D, a branch L is connected between an inlet and an outlet of the first switch valve in parallel, a second switch valve 8 and a plurality of groups of secondary fine filters 9 are connected on the branch L in series, the second switch valve is in a normally closed state, a branch N is connected between the inlet and the outlet of the oil pump in parallel, a third switch valve and a second overflow valve are connected on the branch N, and the third switch valve is in a normally closed state. The invention can provide a stable power source for equipment to be debugged, is provided with a multi-stage filter element, can perform online self-filtration, can provide clean hydraulic oil to the outside, can perform filtration while adding oil to the outside, can also perform deep filtration and cleaning, can change the filtration precision grade as required, and is flexible and convenient.
Description
Technical Field
The invention relates to debugging equipment of a rotary drilling rig, in particular to a portable hydraulic pump station for debugging.
Background
The method comprises the steps that the rotary drilling rig needs to be debugged before leaving a factory, because the power matching condition of a motor and a pump is influenced by a load, in order to enable the pump and the motor of the newly assembled rotary drilling rig to reach a good power matching state, the newly assembled rotary drilling rig needs to be loaded and tested by the debugging pump and the debugging motor which are debugged to reach the good matching state, and parameters (such as the opening degree of the pump, the angle of a swash plate and the like) of the newly assembled rotary drilling rig are adjusted according to a working condition test result obtained after loading. At present, the debugging of the rotary drilling rig before delivery is mostly carried out on a test bed in a certain fixed area, or a pipeline is directly connected to an oil pump outlet of the rotary drilling rig which is debugged nearby. The position of the test bed is generally fixed, and the assembled rotary drilling rig needs to be debugged and needs a transport vehicle, so that the test bed is inconvenient; the oil pump connected to the nearby rotary drilling rig needs to lay a pipeline temporarily, and the debugging pump and the debugging motor which are selected at each time are different (because the positions of the rotary drilling rigs are different), so that the debugging work of the rotary drilling rig which is debugged at present can be increased, and therefore the rotary drilling rig is inconvenient.
In addition, more particle impurities may adhere to the pipeline of the rotary drilling rig before connection and assembly, and after new hydraulic oil is added, the particle impurities can be mixed into the new hydraulic oil, so that the new machine is very easy to clamp when in use, and the new oil needs to be replaced quickly, so that the frequency of replacing the new oil is increased, and further, the consumption of manpower, material resources and financial resources is increased.
Disclosure of Invention
The invention aims to provide a portable hydraulic pump station for debugging, which aims to solve the problems in the background technology.
The utility model provides a hydraulic power unit for portable debugging, includes oil tank 1, oil pump 2, motor 10, first primary filter 11, first fine filter 3, first ooff valve 4, main change valve 5, first overflow valve 19.
The first primary filter is arranged below the liquid level of the oil tank, the first primary filter, the oil pump, the first fine filter, the first switch valve and the main reversing valve are sequentially connected through a pipeline, the first switch valve is in a normally open state, an inlet of the first switch valve is connected with an outlet of the first fine filter, an outlet of the first switch valve is connected with an oil inlet P of the main reversing valve, an oil return port T of the main reversing valve is communicated with the oil tank, a working oil port A and a working oil port B of the main reversing valve are respectively connected with a first external interface C and a second external interface D, the first external interface C is used for connecting an oil inlet or an oil outlet of equipment to be debugged, and meanwhile, the second external interface D is used for connecting an oil outlet or an oil inlet of the equipment to be debugged.
The inlet of the first overflow valve is connected to a pipeline between the outlet of the oil pump and the inlet of the first fine filter, and the outlet of the overflow valve is connected to an oil tank or an oil return port T of the main reversing valve.
Parallelly connected with branch road L between the entry of first ooff valve and the export, the last series connection of branch road L has second ooff valve 8 and a plurality of groups secondary fine filter 9, and the second ooff valve is the normal close state, and each secondary fine filter's filter fineness all is higher than first fine filter, and each secondary fine filter's arrangement is: the filtering precision of each secondary fine filter is gradually increased along the direction that the inlet of the first switch valve points to the outlet.
The hydraulic system comprises a first one-way throttle valve 6 and a second one-way throttle valve 7, one end of the first one-way throttle valve and one end of the second one-way throttle valve are respectively connected with a working oil port A and a working oil port B of the main reversing valve, and the other ends of the first one-way throttle valve and the second one-way throttle valve are respectively connected with a first external interface C and a second external interface D.
A fine filtration one-way valve 12 and a pressure difference sensor 13 are connected in parallel between the outlet and the inlet of each secondary fine filter and the first fine filter, the flow direction of the fine filtration one-way valve is the direction from the inlet of the fine filter to the outlet, the opening pressure of each fine filtration one-way valve is greater than the filtration resistance of the corresponding fine filter, so that under normal conditions, hydraulic oil flows out through the fine filters, the pressure difference sensor feeds back the pressure difference at two ends of each fine filter in real time, an alarm is given when the pressure difference reaches a set threshold value, the blockage of the fine filters is prompted, the fine filters should be replaced, and the hydraulic oil can bypass the fine filters and flow out of the fine filtration one-way valves when the pressure of the fine filters reaches the opening pressure of the fine filtration one-.
The entry of oil pump is connected with branch road S, is equipped with second primary filter 14 and second switching-over valve 15 on the branch road S, the export of first primary filter is connected to the second switching-over valve earlier, and rethread branch road S is connected to the oil pump entrance, and the inside oil circuit structure of second switching-over valve sets up to: when the first primary filter is connected with the oil pump, the second primary filter is disconnected with the oil pump; when the second primary filter is connected with the oil pump, the first primary filter is disconnected with the oil pump.
And a third external interface E is arranged on the branch S at the inlet side of the second primary filter and is used for connecting an oil tank oil outlet of external equipment when the branch L and the branch S are opened, and meanwhile, the first external interface C or the second external interface D is connected with an oil return port of the external equipment so as to deeply filter and clean hydraulic oil of the external equipment.
A branch N is connected in parallel between an inlet and an outlet of the oil pump, a third switch valve 26 and a second overflow valve 27 are connected to the branch N, and the third switch valve 26 is in a normally closed state.
And a branch M is connected between the outlet of the first switch valve and the inlet of the first fine filter in parallel, and a hydraulic oil cleanliness detector 16 is connected on the branch M.
And the branch M is also connected with a third throttle valve 17, and the third throttle valve is used for controlling the flow of the hydraulic oil on the branch M so that the hydraulic oil cleanliness detector can obtain the required detection flow.
A main check valve 18 is connected to a pipeline between the outlet of the oil pump and the inlet of the first fine filter, the flow direction of the main check valve is the direction pointing to the first fine filter from the oil pump, and the inlet of the first overflow valve 19 is connected to the downstream position of the main check valve.
Be connected with first manometer 20 on the pipeline between first external interface C and the first one-way throttle valve, be connected with second manometer 21 on the pipeline between second external interface D and the second one-way throttle valve, when first external interface or the second external interface was as the oil return opening, first manometer or second manometer are used for feeding back instant return pressure respectively to be convenient for respectively adjust according to the aperture to throttle valve in first one-way throttle valve or the second one-way throttle valve, realize required oil return flow.
And a third pressure gauge 22 is connected on a pipeline between the inlet of the first fine filter and the outlet of the oil pump, and is used for feeding back the pressure of the outlet of the oil pump in real time, so that the discharge capacity of the oil pump can be adjusted in time according to the requirement of load.
The oil tank is characterized in that an air filter 23 used for filtering impurities such as dust is arranged on the wall of the oil tank, a liquid level meter 24 and a liquid level alarm 25 are arranged in the oil tank, the liquid level meter is used for giving an alarm when the liquid level in the oil tank rises to a set height value, and the liquid level alarm is used for giving an alarm when the liquid level in the oil tank falls to the set value.
Hydraulic power unit sets up on the handcart for portable debugging, the handcart has solid rubber travelling wheel, and solid rubber travelling wheel has locking mechanism to guarantee on the ground that has the grade, can not remove by oneself.
The oil pump adopts high-pressure plunger variable pump, first ooff valve, second ooff valve and third ooff valve all adopt the switching-over valve.
The invention has at least the following beneficial effects:
the portable hydraulic pump station for debugging can complete the function of moving the pump station on equipment to be debugged, is provided with multiple safety protection facilities, provides a stable power source for the equipment to be debugged, is provided with multiple stages of filter elements, can perform online self-filtration, provides clean hydraulic oil for external equipment, has an oiling function, can perform filtration while oiling, can also perform deep filtration and cleaning, can change the filtration precision grade along with the need, is flexible and convenient, and is also provided with a hydraulic oil cleanliness detection device.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic diagram of a hydraulic system of a hydraulic pump station for portable debugging in accordance with a preferred embodiment of the present invention.
In the figure: 1-an oil tank, 2-an oil pump, 3-a first fine filter, 4-a first switch valve, 5-a main directional control valve, 6-a first one-way throttle valve, 7-a second one-way throttle valve, 8-a second switch valve, 9-a secondary fine filter, 91-a second fine filter, 92-a third fine filter, 10-a motor, 11-a first primary filter, 12-a fine filter one-way valve, 13-a differential pressure sensor, 14-a second primary filter, 15-a second directional control valve, 16-a hydraulic oil cleanliness detector, 17-a third throttle valve, 18-a main one-way valve, 19-a first overflow valve, 20-a first pressure gauge, 21-a second pressure gauge, 22-a third pressure gauge, 23-an air filter, 24-a liquid level meter, 25-a liquid level alarm, 26-a third on-off valve and 27-a second overflow valve.
Detailed Description
Embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways, which are defined and covered by the claims.
Referring to fig. 1, the portable hydraulic pump station for debugging comprises a manual cart and a hydraulic system loaded on the manual cart, and referring to fig. 1, the hydraulic system comprises an oil tank 1, an oil pump 2, a motor 10, a first primary filter 11, a first fine filter 3, a first switch valve 4, a main reversing valve 5, a first one-way throttle valve 6 and a second one-way throttle valve 7. The motor 10 is connected with the oil pump 2 through a coupling.
The first primary filter is arranged below the liquid level of the oil tank, the first primary filter, the oil pump, the first fine filter, the first switch valve and the main reversing valve are sequentially connected through a pipeline, the first switch valve is in a normally open state, the inlet of the first switch valve is connected with the outlet of the first fine filter, the outlet of the first switch valve is connected with the oil inlet P of the main reversing valve, the oil return port T of the main reversing valve is communicated with the oil tank, one end of the first one-way throttle valve and one end of the second one-way throttle valve are respectively connected with a working oil port A and a working oil port B of the main reversing valve, the other ends of the first one-way throttle valve and the second one-way throttle valve are respectively connected with a first external interface C and a second external interface D, the first external interface is used for connecting an oil inlet or an oil outlet of equipment to be debugged, and the second external interface is used for connecting an oil outlet or an oil inlet of the equipment to be debugged.
Parallelly connected with branch road L between the entry of first ooff valve and the export, the last series connection of branch road L has second ooff valve 8 and a plurality of groups secondary fine filter 9, and the second ooff valve is the normal close state, and each secondary fine filter's filter fineness all is higher than first fine filter, and each secondary fine filter's arrangement is: the filtering precision of each secondary fine filter is gradually increased along the direction that the inlet of the first switch valve points to the outlet.
A fine filtration one-way valve 12 and a pressure difference sensor 13 are connected in parallel between the outlet and the inlet of each secondary fine filter and the first fine filter, the flow direction of the fine filtration one-way valve is the direction from the inlet of the fine filter to the outlet, the opening pressure of each fine filtration one-way valve is greater than the filtration resistance of the corresponding fine filter, so that under normal conditions, hydraulic oil flows out through the fine filters, the pressure difference sensor feeds back the pressure difference at two ends of each fine filter in real time, an alarm is given when the pressure difference reaches a set threshold value, the blockage of the fine filters is prompted, the fine filters should be replaced, and the hydraulic oil can bypass the fine filters and flow out of the fine filtration one-way valves when the pressure of the fine filters reaches the opening pressure of the fine filtration one-.
The inlet of the oil pump is connected with a branch S, a second primary filter 14 and a second reversing valve 15 are arranged on the branch S, the outlet of the first primary filter is connected to the second reversing valve firstly and then connected to the inlet of the oil pump through the branch S, a third external interface E is arranged on the branch S at the inlet side of the second primary filter and used for connecting an oil tank oil outlet of external equipment when the branch L and the branch S are opened and the first switch valve 4 is closed, and meanwhile, the first external interface C or the second external interface D is connected with an oil return port of the external equipment so as to deeply filter and clean hydraulic oil of the external equipment. In this embodiment, the second directional valve is a two-position four-way directional valve, when the second directional valve is not actuated, the first primary filter and the oil tank are connected to the oil pump, the second primary filter is disconnected from the oil pump, when the second directional valve is actuated, the second primary filter and the external device are connected to the oil pump, and the first primary filter is disconnected from the oil pump.
In this embodiment, the second primary filter is a magnetic oil absorption filter, and can adsorb the metallic impurity in the fluid and filter. In this embodiment, the filtering precision of the first primary filter and the second primary filter is 100 μm, the filtering precision of the first fine filter 3 is 20 μm, two secondary fine filters 9 are provided, and the two secondary fine filters include a second fine filter 91 and a second fine filter 92 connected in series to the branch L, the filtering precision of the second fine filter is 10 μm, and the filtering precision of the third fine filter is 5 μm. The quick-change connectors are arranged at the outlets and the inlets of all stages of fine filters, so that the fine filters can be conveniently detached and replaced at any time, the first fine filter can be detached or replaced when needed, and the number of filter channels and the filtering precision of each filter channel can be changed randomly when the filter is used.
The branch S and the branch L are opened simultaneously, and the branch S and the branch L can be used for filtering and cleaning hydraulic oil in equipment deeply before leaving a factory, so that the original cleanliness of the hydraulic oil of the equipment is ensured, the service life of the hydraulic oil is prolonged, and the oil change frequency is reduced.
A branch N is connected between an inlet and an outlet of the oil pump in parallel, a third switch valve 26 and a second overflow valve 27 are connected to the branch N, the third switch valve 26 is in a normally closed state, the third switch valve 26 is used for opening the branch N when the branch L and the branch S are both opened, an outlet of the second overflow valve is correspondingly connected with the inlet of the oil pump and used for performing pressure relief protection on the system when the oil pump is not communicated with the oil tank, and the pressure relief oil is led to the inlet end of the oil pump when the system is in overpressure. During the use, can set the set pressure of first overflow valve to being higher than the set pressure of second overflow valve, when branch N does not open, provide the safety protection effect by first overflow valve, when branch N opened, first overflow valve inefficacy. In the process of providing a power source for external equipment, when the system pressure cannot be too high, the branch N can be opened, and when the load needs higher pressure, the branch N is closed.
A branch M is connected between the outlet of the first switch valve and the inlet of the first fine filter in parallel, a hydraulic oil cleanliness detector 16 and a third throttle valve 17 are connected to the branch M, the hydraulic oil cleanliness detector can sample hydraulic oil in a pipeline at regular intervals and analyze whether the particle size in the hydraulic oil meets requirements or not, when the sampling is qualified for multiple times (such as three times) continuously, a prompt is automatically sent to prompt that the filtering is completed, the oil pump can be stopped, the condition of insufficient filtering and excessive filtering can be avoided, and the particle size detection threshold value of the hydraulic oil cleanliness detector can be automatically adjusted so as to adjust the filtering and detecting precision as required. And the third throttle valve is used for controlling the flow of the hydraulic oil on the branch M so that the hydraulic oil cleanliness detector can obtain the required detection flow.
And a main check valve 18 is connected on a pipeline between the outlet of the oil pump and the inlet of the first fine filter, and the flow direction of the main check valve is the direction pointing to the first fine filter from the oil pump.
The hydraulic system comprises an overflow valve 19, wherein the inlet of the overflow valve is connected to a pipeline between a main one-way valve and a first fine filter, and the outlet of the overflow valve is connected to an oil tank or an oil return port T of a main reversing valve.
Be connected with first manometer 20 on the pipeline between first external interface C and the first one-way throttle valve, be connected with second manometer 21 on the pipeline between second external interface D and the second one-way throttle valve, when first external interface or the second external interface was as the oil return opening, first manometer or second manometer are used for feeding back instant return pressure respectively to be convenient for respectively adjust according to the aperture to throttle valve in first one-way throttle valve or the second one-way throttle valve, realize required oil return flow.
And a third pressure gauge 22 is connected on a pipeline between the inlet of the first fine filter and the outlet of the oil pump, and is used for feeding back the pressure of the outlet of the oil pump in real time, so that the discharge capacity of the oil pump can be adjusted in time according to the requirement of load.
The oil tank is characterized in that an air filter 23 used for filtering impurities such as dust is arranged on the wall of the oil tank, a liquid level meter 24 and a liquid level alarm 25 are arranged in the oil tank, the liquid level meter is used for giving an alarm when the liquid level in the oil tank rises to a set height value, and the liquid level alarm is used for giving an alarm when the liquid level in the oil tank falls to the set value.
In this embodiment, the oil pump adopts a high-pressure plunger variable displacement pump, the first switch valve and the second switch valve are two-position two-way reversing valves, and the third switch valve is a two-position four-way reversing valve.
The hydraulic pump station for portable debugging can realize multiple functions: the first external interface C and the second external interface D are respectively connected with the oil inlet and the oil return port of the external equipment, so that a stable power source for debugging can be provided for the external equipment, the output flow of the oil pump can be adjusted in real time, and the requirements of various working conditions on the flow are met. Connect third external interface E and oil drum, first external interface C or second external interface D connect the external equipment oil tank, open branch road S, can refuel external equipment. The third external interface E is connected with the external equipment oil tank, the first external interface C or the second external interface D is connected with the external equipment oil tank, the external equipment hydraulic system can be filtered and cleaned, the branch L is opened, multi-stage fine filtering can be performed, and the depth filtering function is realized. Of course, the above mentioned external equipment for refueling and filtering cleaning may be the hydraulic pump station itself for portable debugging in the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A portable hydraulic pump station for debugging is characterized by comprising an oil tank (1), an oil pump (2), a first primary filter (11), a first fine filter (3), a first switch valve (4), a main reversing valve (5) and a first overflow valve (19);
the first primary filter, the oil pump, the first fine filter, the first switch valve and the main reversing valve are sequentially connected through a pipeline, the first switch valve is in a normally open state, an inlet of the first switch valve is connected with an outlet of the first fine filter, an outlet of the first switch valve is connected with an oil inlet P of the main reversing valve, an oil return port T of the main reversing valve is communicated with an oil tank, a working oil port A and a working oil port B of the main reversing valve are respectively connected with a first external interface C and a second external interface D, the first external interface C is used for connecting an oil inlet or an oil outlet of equipment to be debugged, and meanwhile, the second external interface D is used for connecting an oil outlet or an oil inlet of the equipment to be debugged;
the inlet of the first overflow valve is connected to a pipeline between the outlet of the oil pump and the inlet of the first fine filter, and the outlet of the first overflow valve is connected to an oil tank or an oil return port T of the main reversing valve;
a branch L is connected between an inlet and an outlet of the first switch valve in parallel, a second switch valve (8) and a plurality of groups of secondary fine filters (9) are connected to the branch L in series, and the second switch valve is in a normally-closed state;
the entry of oil pump is connected with branch road S, is equipped with second primary filter (14) and second switching-over valve (15) on the branch road S, the export of first primary filter is connected to the second switching-over valve earlier, and rethread branch road S is connected to the oil pump entrance, and the inside oil circuit structure of second switching-over valve sets up to: when the first primary filter is connected with the oil pump, the second primary filter is disconnected with the oil pump; when the second primary filter is connected with the oil pump, the first primary filter is disconnected with the oil pump;
and a third external interface E is arranged on the branch S at the inlet side of the second primary filter and is used for connecting an oil tank oil outlet of external equipment when the branch L and the branch S are opened, and meanwhile, the first external interface C or the second external interface D is connected with an oil return port of the external equipment so as to deeply filter and clean hydraulic oil of the external equipment.
2. The hydraulic pump station for portable debugging according to claim 1, wherein a branch N is connected in parallel between the inlet and the outlet of the oil pump, and a third on-off valve (26) and a second overflow valve (27) are connected to the branch N, and the third on-off valve is in a normally closed state.
3. The hydraulic pump station for debugging of claim 1, wherein a main check valve (18) is connected to a pipeline between the outlet of the oil pump and the inlet of the first fine filter, the flow direction of the main check valve is the direction from the oil pump to the first fine filter, and the inlet of the first overflow valve (19) is connected to a downstream position of the main check valve.
4. The hydraulic pump station for portable debugging according to claim 1, wherein the hydraulic pump station comprises a first one-way throttle valve (6) and a second one-way throttle valve (7), one end of each of the first one-way throttle valve and the second one-way throttle valve is connected to the working oil port A and the working oil port B of the main reversing valve respectively, and the other end of each of the first one-way throttle valve and the second one-way throttle valve is connected to the first external interface C and the second external interface D respectively.
5. The hydraulic pump station for portable debugging according to claim 4, wherein a first pressure gauge (20) is connected to a pipeline between the first external interface C and the first one-way throttle valve, a second pressure gauge (21) is connected to a pipeline between the second external interface D and the second one-way throttle valve, and when the first external interface or the second external interface is used as an oil return port, the first pressure gauge or the second pressure gauge is respectively used for feeding back the instant oil return pressure, so that the opening degree of the throttle valve in the first one-way throttle valve or the second one-way throttle valve can be conveniently adjusted, and the required oil return flow rate is realized.
6. The hydraulic pump station for portable debugging according to claim 1, wherein a third pressure gauge (22) is connected to the pipeline between the inlet of the first fine filter and the outlet of the oil pump, and the third pressure gauge is used for feeding back the pressure at the outlet of the oil pump in real time, so that the displacement of the oil pump can be adjusted in time according to the load requirement.
7. The hydraulic pump station for portable debugging according to claim 1, wherein an air filter (23) for filtering dust and impurities is disposed on a wall of the oil tank, a liquid level meter (24) and a liquid level alarm (25) are disposed in the oil tank, the liquid level meter is used for alarming when the liquid level in the oil tank rises to a set height value, and the liquid level alarm is used for alarming when the liquid level in the oil tank drops to a set value.
8. The hydraulic pump station for portable debugging according to claim 2, wherein the hydraulic pump station for portable debugging is arranged on a trolley, the trolley is provided with a solid rubber travelling wheel, the solid rubber travelling wheel is provided with a locking mechanism, the oil pump is a high-pressure plunger variable pump, and the first switch valve, the second switch valve and the third switch valve are all reversing valves.
9. The hydraulic pump station for portable debugging according to any one of claims 1-8, wherein a fine-filtration check valve (12) and a differential pressure sensor (13) are connected in parallel between the outlet and the inlet of each of the first fine filter and the secondary fine filter, the flow direction of the fine-filtration check valve is the direction from the inlet of the fine filter to the outlet, and the opening pressure of each fine-filtration check valve is greater than the filtration resistance of the corresponding fine filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523559.7A CN109458364B (en) | 2018-12-13 | 2018-12-13 | Hydraulic power unit for portable debugging |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811523559.7A CN109458364B (en) | 2018-12-13 | 2018-12-13 | Hydraulic power unit for portable debugging |
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| Publication Number | Publication Date |
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| CN109458364A CN109458364A (en) | 2019-03-12 |
| CN109458364B true CN109458364B (en) | 2020-06-30 |
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| CN201811523559.7A Active CN109458364B (en) | 2018-12-13 | 2018-12-13 | Hydraulic power unit for portable debugging |
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| CN111120457B (en) * | 2019-12-06 | 2021-12-28 | 太原理工大学 | Lubricating, cooling and filtering integrated device for hydraulic pump and motor |
| CN111765147B (en) * | 2020-06-02 | 2021-10-15 | 美钻能源科技(上海)有限公司 | Underwater hydraulic oil control device and control method |
| CN113984427B (en) * | 2021-11-26 | 2022-07-29 | 安徽农业大学 | Centrifugal double pump integration pump station test device of intelligence |
| CN114046291B (en) * | 2021-11-30 | 2024-06-21 | 芜湖赢诺液压科技有限公司 | Cartridge valve performance test equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR970045660A (en) * | 1995-12-30 | 1997-07-26 | 석진철 | Hydraulic system for skid steer loader |
| JP3897482B2 (en) * | 1999-06-10 | 2007-03-22 | 株式会社日立製作所 | Hydraulic device |
| CN202057493U (en) * | 2011-04-12 | 2011-11-30 | 新乡平原航空技术工程有限公司 | Oil source apparatus for detection of fuel oil system of engine |
| CN103244500A (en) * | 2013-04-25 | 2013-08-14 | 无锡艾森保自动化装备有限公司 | Multifunctional hydraulic device |
| CN103498913B (en) * | 2013-10-23 | 2015-12-09 | 大连华锐重工集团股份有限公司 | Be applicable to the wind turbine gearbox lubrication system of extreme operating condition |
| CN205401317U (en) * | 2016-03-04 | 2016-07-27 | 广东伊之密精密注压科技有限公司 | Hydraulic oil filtration equipment |
| CN107158782B (en) * | 2017-06-05 | 2019-03-26 | 太原科技大学 | A kind of water base filtration system back purge system of height and method based on the solid coupling vibration of stream |
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