CN106525693B - Hydraulic osmotic pressure loading device for rock osmotic test - Google Patents
Hydraulic osmotic pressure loading device for rock osmotic test Download PDFInfo
- Publication number
- CN106525693B CN106525693B CN201611223419.9A CN201611223419A CN106525693B CN 106525693 B CN106525693 B CN 106525693B CN 201611223419 A CN201611223419 A CN 201611223419A CN 106525693 B CN106525693 B CN 106525693B
- Authority
- CN
- China
- Prior art keywords
- oil
- water
- valve
- way
- cavity
- 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.)
- Active
Links
- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 239000011435 rock Substances 0.000 title claims abstract description 45
- 230000003204 osmotic effect Effects 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 186
- 230000035515 penetration Effects 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 230000001276 controlling effect Effects 0.000 claims abstract description 8
- 238000004891 communication Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 7
- 230000008569 process Effects 0.000 abstract description 7
- 238000004146 energy storage Methods 0.000 description 5
- 239000008400 supply water Substances 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 230000035699 permeability Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011152 fibreglass Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N15/082—Investigating permeability by forcing a fluid through a sample
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The invention relates to the field of rock penetration test equipment, in particular to a hydraulic type penetration pressure loading device for rock penetration test, which comprises a water tank, a first oil tank, a unidirectional variable pump, a speed regulating valve, a three-position four-way hydraulic reversing valve, a double-acting booster cylinder and a penetrometer which are sequentially communicated, wherein the unidirectional variable pump is communicated with a safety protection device. The two oil cavities of the double-acting booster cylinder are respectively communicated with the three-position four-way hydraulic reversing valve through two oil pipes, the two water cavities are respectively communicated with the water tank in one way, the two water cavities are respectively communicated with the permeameter through two water supply pipes, and a first control oil way provided with a first sequence valve and a second control oil way provided with a second sequence valve for controlling the switching of the three-position four-way hydraulic reversing valve are further arranged between the double-acting booster cylinder and the three-position four-way hydraulic reversing valve. The automatic control of osmotic pressure in the test process is realized, so that the intermediate water supply is not interrupted, and the test cost is saved.
Description
Technical Field
The invention relates to the field of rock penetration test equipment, in particular to a hydraulic penetration pressure loading device for rock penetration test.
Background
In the coal mining process, if the hidden collapse column is revealed, water inrush disasters often occur. The fissures and void structures of the broken rock in the trap column form channels for the water burst. The penetration test of broken rock is the basis for studying the mechanism of the seepage catastrophe of broken rock mass accompanied by the migration of particles. At present, the technical problem of broken rock penetration test is the loading and control of the penetration pressure.
The existing osmotic pressure loading device for rock osmotic test is controlled by a water pump station, an oil pump station and an injector type energy storage device. On one hand, the water pump station, the oil pump station and the energy storage device are required to be manually switched, so that the workload of a test operator is increased, and meanwhile, the accurate collection of test data is influenced by frequent switching; on the other hand, the volume of the injector-type energy storage device is limited, so that when broken rock seepage suddenly changes during the test, the water flow becomes large, and at the moment, the water source provided by the injector-type energy storage device is insufficient, so that the test has to be interrupted.
Disclosure of Invention
The invention aims to provide a hydraulic osmotic pressure loading device for rock osmotic test, which is used for realizing water supply automation without water supply interruption in the middle, and provides stable, continuous and adjustable osmotic pressure loading.
Embodiments of the present invention are implemented as follows:
a hydraulic osmotic pressure loading device for rock permeation test comprises a water tank, a first oil tank, a unidirectional variable pump, a speed regulating valve, a three-position four-way hydraulic reversing valve, a double-acting booster cylinder and a permeameter which are communicated in sequence, wherein the unidirectional variable pump is communicated with a safety protection device. The double-acting booster cylinder comprises a first water cavity, a second water cavity, a first oil cavity and a second oil cavity, wherein the first oil cavity and the second oil cavity are respectively communicated with the three-position four-way hydraulic reversing valve through a first oil pipe and a second oil pipe. The water tank is communicated with the first water cavity through a first water pipe provided with a first one-way valve, and is communicated with the second water cavity through a second water pipe provided with a second one-way valve. The first water cavity is communicated with the permeameter through a first water supply pipe provided with a third one-way valve, and the second water cavity is communicated with the permeameter through a second water supply pipe provided with a fourth one-way valve. A first control oil way for controlling the switching of the three-position four-way hydraulic reversing valve is further arranged between the first oil cavity and the three-position four-way hydraulic reversing valve, a second control oil way for controlling the switching of the three-position four-way hydraulic reversing valve is further arranged between the second oil cavity and the three-position four-way hydraulic reversing valve, a first sequence valve is arranged on the first control oil way, and a second sequence valve is arranged on the second control oil way.
In the preferred embodiment of the invention, a filter is further arranged between the first oil tank and the unidirectional variable pump, and two ends of the filter are respectively communicated with the first oil tank and the unidirectional variable pump.
In the preferred embodiment of the invention, a cooler is also arranged between the unidirectional variable pump and the three-position four-way hydraulic reversing valve, and two ends of the cooler are respectively communicated with the unidirectional variable pump and the three-position four-way hydraulic reversing valve.
In a preferred embodiment of the invention, the hydraulic osmotic pressure loading device for rock permeability test further comprises an energy accumulator, wherein the energy accumulator is arranged between the double-acting booster cylinder and the permeameter, the first water supply pipe and the second water supply pipe are both communicated with the water inlet end of the energy accumulator, and the water outlet end of the energy accumulator is communicated with the permeameter.
In a preferred embodiment of the invention, the hydraulic osmotic pressure loading device for rock permeation testing further comprises a pressure sensor arranged on the line between the accumulator and the permeameter.
In a preferred embodiment of the invention, the hydraulic osmotic pressure loading device for rock permeation testing further comprises a flow sensor arranged on the line between the accumulator and the osmometer.
In a preferred embodiment of the present invention, the first sequence valve and the second sequence valve are both internal control leakage type sequence valves.
In a preferred embodiment of the present invention, the safety protection device includes an overflow valve, and the overflow valve is communicated with a pipeline between the unidirectional variable pump and the speed regulating valve through a third oil pipe.
In a preferred embodiment of the invention, the safety device further comprises a second oil tank, and the outlet end of the overflow valve is communicated with the second oil tank.
In a preferred embodiment of the present invention, a pressure gauge is further disposed on the third oil pipe.
The embodiment of the invention has the beneficial effects that: the first water cavity and the second water cavity of the double-acting booster cylinder of the hydraulic osmotic pressure loading device for rock osmotic test are communicated with the water tank through the first water pipe and the second water pipe, and then are communicated with the penetrometer through the first water pipe and the second water pipe, meanwhile, the first oil cavity and the second oil cavity of the double-acting booster cylinder are communicated with the three-position four-way hydraulic reversing valve through the first oil pipe and the second oil pipe, the first oil cavity and the second oil cavity are respectively communicated with the three-position four-way hydraulic reversing valve through the first control oil way and the second control oil way, and the first sequence valve and the second sequence valve are respectively arranged on the first control oil way and the second control oil way, so that when the pressure in the first oil cavity or the second oil cavity reaches the rated pressure of the corresponding sequence valve, the sequence valve can be controlled to perform reversing operation, the automatic water supply and water pumping effects of the double-water channels can be realized, the water supply and the pressurization of the penetrometer can be continuously performed, the automatic control of the osmotic pressure in the test process is realized through the interaction of the double-water channels and the design of the double-channel four-oil ways, the water supply system is realized, the test cost is saved, the water supply cost is further improved, and the test data is not used, and the accuracy is further improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a hydraulic osmotic pressure loading device for rock permeation test according to an embodiment of the present invention;
fig. 2 is a schematic structural view of a double-acting booster cylinder provided by the invention.
Icon: 10-a hydraulic osmotic pressure loading device for rock permeability test; 100-a water tank; 110-a first one-way valve; 120-a second one-way valve; 130-a third one-way valve; 140-fourth check valve; 200-a first oil tank; 201-a filter; 300-one-way variable pump; 301-a cooler; 400-speed regulating valve; 500-three-position four-way hydraulic reversing valve; 510-a first sequence valve; 520-a second sequence valve; 600-double-acting booster cylinder; 610-a first water chamber; 620-a second water chamber; 630-a first oil chamber; 640-a second oil chamber; 650-piston rod; 660-first piston; 670-a second piston; 680-a third piston; 700-permeameter; 701-an accumulator; 702-a pressure sensor; 703-a flow sensor; 800-a safety protection device; 810-a pressure gauge; 820-overflow valve; 830-a second tank; 11-a first water pipe; 12-a second water pipe; 13-a first water supply pipe; 14-a second water supply pipe; 21-a first oil pipe; 22-a second oil pipe; 23-a third oil pipe; 24-a first control oil path; 25-a second control oil path.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is apparent that the described embodiments are some embodiments of the present invention, but not all embodiments of the present invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the invention, as presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.
In the description of the present invention, it should be noted that, the azimuth or positional relationship indicated by the terms "left", "right", etc. are based on the azimuth or positional relationship shown in the drawings, or the azimuth or positional relationship in which the inventive product is conventionally put in use, are merely for convenience of describing the present invention and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific azimuth, be configured and operated in a specific azimuth, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless explicitly stated and limited otherwise, the terms "disposed," "mounted," "in communication" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be in mechanical communication or in electrical communication; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Referring to fig. 1, the present embodiment provides a hydraulic osmotic pressure loading device 10 for rock permeation test, which includes a water tank 100, a first oil tank 200, a unidirectional variable pump 300, a speed regulating valve 400, a three-position four-way hydraulic reversing valve 500, a double-acting booster cylinder 600 and a permeameter 700, which are sequentially communicated. The unidirectional variable displacement pump 300 is in communication with a safety protection device 800.
The first tank 200 is a container for storing and supplying oil to the hydraulic system, and its shape and size may be selected according to actual needs, for example, a rectangular parallelepiped tank may be selected, or a cylindrical tank may be selected. In addition, the material can be selected from metal materials and other materials such as glass fiber reinforced plastic or plastic.
The unidirectional variable pump 300 is used for controlling unidirectional transportation of oil, and can convey the oil in the first oil tank 200 to the direction of the three-position four-way hydraulic reversing valve 500. In addition, the displacement of the unidirectional variable displacement pump 300 can be changed, thereby being beneficial to controlling the oil supply amount in the pipeline, stabilizing the pressure and further being beneficial to the rock penetration test. Preferably, a filter 201 is arranged on a pipeline between the first oil tank 200 and the unidirectional variable pump 300, a filter cylinder with a certain specification of filter screen is arranged in the filter 201, oil is filtered through the filter 201 under the suction of the unidirectional variable pump 300, and other impurities such as suspended matters and particulate matters in the oil are intercepted by the filter 201, so that the turbidity of the oil in a subsequent pipeline is reduced, the dirt of a system is reduced, and the normal operation of a hydraulic system and various components is ensured.
The speed regulating valve 400 is a valve for controlling the flow of the oil way, and the oil flow in the pipeline can be changed and controlled through the speed regulating valve 400, so that the oil flow in the pipeline is kept stable, and the pipeline flow for providing water pressure is controlled. Preferably, a cooler 301 is further arranged on a pipeline between the unidirectional variable pump 300 and the three-position four-way hydraulic reversing valve 500, further preferably, the cooler 301 is arranged between the unidirectional variable pump 300 and the speed regulating valve 400, the cooler 301 can effectively control the oil temperature in a hydraulic system, the oil temperature is prevented from being too high, and further normal operation of the speed regulating valve 400, the three-position four-way hydraulic reversing valve 500, the double-acting booster cylinder 600 and the like can be ensured, the stability performance of the whole hydraulic osmotic pressure loading device 10 for rock permeation test is ensured, and the service life of the device is prolonged.
The three-position four-way hydraulic reversing valve 500 has three working positions of left position, middle position and right position and four working ports communicated with an external pipeline. The three-position four-way hydraulic directional valve 500 and the double-acting booster cylinder 600 are communicated through the first oil pipe 21 and the second oil pipe 22. Further, since the oil flow rate at the outlet of the unidirectional variable pump 300 is relatively fast, in order to reduce the impact on the three-position four-way hydraulic reversing valve 500, the service life of the three-position four-way hydraulic reversing valve 500 is prolonged, preferably, the pipeline and the middle position of the three-position four-way hydraulic reversing valve 500 are in a P shape, so that the oil entering the three-position four-way hydraulic reversing valve 500 can be split, and the impact on the middle position is effectively reduced.
Referring to fig. 1 and 2, a double-acting booster cylinder 600 includes a first water chamber 610, a second water chamber 620, and first and second oil chambers 630 and 640. The first water chamber 610 and the second water chamber 620 are disposed at both sides of the oil chamber composed of the first oil chamber 630 and the second oil chamber 640, respectively. A piston rod 650 is further arranged in the double-acting booster cylinder 600, a first piston 660 is arranged at the central position of the rod part of the piston rod 650, a second piston 670 and a third piston 680 are respectively arranged at two ends of the piston rod 650, and the first piston 660, the second piston 670 and the third piston 680 are fixedly connected with the piston rod 650. The first piston 660 is located in the oil chamber of the double-acting booster cylinder 600, and both sides of the first piston 660 form a first oil chamber 630 and a second oil chamber 640 isolated from each other, respectively, the second piston 670 is located in the first water chamber 610, and the third piston 680 is located in the second water chamber 620. The first oil cavity 630 is communicated with the three-position four-way hydraulic reversing valve 500 through the first oil pipe 21, and the second oil cavity 640 is communicated with the three-position four-way hydraulic reversing valve 500 through the second oil pipe 22, so that oil supply is realized. The first water cavity 610 of the double-acting booster cylinder 600 is communicated with the water tank 100 through a first water pipe 11, the second water cavity 620 of the double-acting booster cylinder 600 is communicated with the water tank 100 through a second water pipe 12, a first one-way valve 110 is arranged on the first water pipe 11, and a second one-way valve 120 is arranged on the second water pipe 12, so that water source supply is realized. The first check valve 110 and the second check valve 120 are arranged, so that water in the water tank 100 can only flow into the first water cavity 610 or the second water cavity 620, and water can only be conveyed to the osmometer 700 for testing without backflow of water under the condition that the water pressure in the first water cavity 610 or the second water cavity 620 is increased.
In addition, a first control oil path 24 is further disposed between the first oil chamber 630 and the three-position four-way hydraulic reversing valve 500, two ends of the first control oil path 24 are respectively communicated with the first oil pipe 21 and the right position of the three-position four-way hydraulic reversing valve 500, and a first sequence valve 510 is disposed on the first control oil path 24. A second control oil way 25 is further arranged between the second oil cavity 640 and the three-position four-way hydraulic reversing valve 500, two ends of the second control oil way 25 are respectively communicated with the second oil pipe 22 and the left position of the three-position four-way hydraulic reversing valve 500, and a second sequence valve 520 is arranged on the second control oil way 25. Further, the oil outlet of the three-position four-way hydraulic reversing valve 500 is communicated with a third oil tank (not shown), and the third oil tank is used for containing oil returned by the first oil pipe 21 and the second oil pipe 22 of Cheng Di.
Referring again to fig. 1, a safety device 800 is provided between the unidirectional variable pump 300 and the speed valve 400, the safety device 800 including an overflow valve 820, and the overflow valve 820 is communicated with a pipe between the unidirectional variable pump 300 and the speed valve 400 through a third oil pipe 23. Preferably, relief valve 820 communicates with the piping between unidirectional variable displacement pump 300 and chiller 301 through third oil line 23. When the system is blocked, the pipeline pressure rises, the overflow valve 820 is opened, the unidirectional variable pump 300 is unloaded, and the working safety of the whole system is ensured. It is further preferred that the safety protection device 800 further comprises a second oil tank 830, and that the outlet end of the overflow valve 820 is in communication with the second oil tank 830, so that the oil flowing out of the overflow valve 820 can be stored in the second oil tank 830. Still further preferably, a pressure gauge 810 is further provided on the third oil pipe 23 so that the pressure in the oil supply line can be observed in real time by the pressure gauge 810.
The first tank 200, the second tank 830, and the third tank may be connected by a pipeline, or may be the same tank.
Through the above-mentioned structure setting, when the three-position four-way hydraulic reversing valve 500 is located in the left position, when it controls oil to enter the first oil cavity 630, the oil in the first oil cavity 630 increases, the oil pressure increases, the oil acts on the piston rod 650, the piston rod 650 moves to the right, the volume of the first water cavity 610 increases, the water tank 100 starts to supply water, the water flow enters the first water cavity 610 along the first water pipe 11 through the first check valve 110, meanwhile, the volume of the second water cavity 620 decreases, and the pressure increase of the water in the second water cavity 620 is pressed out. When the oil pressure in the first oil cavity 630 increases to the rated pressure of the first sequence valve 510, the valve of the first sequence valve 510 is opened, the oil flows back to the three-position four-way hydraulic reversing valve 500, the three-position four-way hydraulic reversing valve 500 is controlled to switch to the right position, and in the process of moving the piston rod 650 to the right, the oil in the second oil cavity 640 flows back to the three-position four-way electromagnetic reversing valve 500 and flows back to the third oil tank for storage, and the operation is continued. During the rightward movement of the piston rod 650, the oil in the second oil chamber 640 flows back to the three-position four-way electromagnetic directional valve 500 and flows back to the third oil tank for storage.
When the three-position four-way hydraulic reversing valve 500 is switched to the right position and controls oil to enter the second oil cavity 640, the oil in the second oil cavity 640 increases, the oil pressure increases, the oil acts on the piston rod 650, the piston rod 650 moves leftwards, the volume of the second water cavity 620 increases, the water tank 100 starts to supply water, the water flows through the second one-way valve 120 along the second water pipe 12 to enter the second water cavity 620, meanwhile, the volume of the first water cavity 610 decreases, and the pressure of the water in the first water cavity 610 increases to be extruded. When the oil pressure in the second oil cavity 640 increases to the rated pressure of the second sequence valve 520, the valve of the second sequence valve 520 is opened, the oil flows back to the three-position four-way hydraulic reversing valve 500, and the three-position four-way hydraulic reversing valve 500 is controlled to switch to the left position to continue working. During the leftward movement of the piston rod 650, the oil in the first oil chamber 630 flows back to the three-position four-way electromagnetic directional valve 500 and flows back to the third oil tank for storage.
Preferably, the first sequence valve 510 and the second sequence valve 520 are both internal control and external leakage sequence valves. The first sequence valve 510 and the second sequence valve 520 are only opened and closed, and the sequence valve is opened only when the pressure inside the pipe reaches the rated pressure of the sequence valve. The hydraulic system maintains certain pressure, and meanwhile, the reciprocating circulation of oil in the double-type four-oil-way is realized, so that the whole hydraulic system can work circularly and sustainably.
The penetrometer 700 is a device for placing rock and applying water to the rock in a rock penetration test, and the penetrometer 700 is communicated with the first water chamber 610 through the first water supply pipe 13; in addition, the permeameter 700 is also in communication with the second water chamber 620 via the second water supply line 14. The first water supply pipe 13 is provided with a third check valve 130, and the second water supply pipe 14 is provided with a fourth check valve 140. So that the water in the first water chamber 610 and the second water chamber 620 can be alternately replenished into the permeameter 700 to maintain the water pressure in the permeameter 700 to act on the rock in which the test is performed, and at the same time, the water of the permeameter 700 does not flow back into the first water chamber 610 or the second water chamber 620 due to the third check valve 130 and the fourth check valve 140.
Preferably, the hydraulic osmotic pressure loading device 10 for rock permeability test further comprises an accumulator 701, wherein the accumulator 701 is arranged between the double-acting booster cylinder 600 and the permeameter 700, the first water supply pipe 13 and the second water supply pipe 14 are both communicated with the water inlet end of the accumulator 701, and the water outlet end of the accumulator 701 is communicated with the permeameter 700. So that the water transferred from the first water supply pipe 13 can be acted on, or the water transferred from the second water supply pipe 14 can be acted on, when the internal water pressure of the first water supply pipe 13 or the second water supply pipe 14 exceeds the internal pressure of the accumulator 701, the water of the first water supply pipe 13 or the second water supply pipe 14 compresses the gas in the accumulator 701, and the pressure of the water is converted into the gas internal energy; when the internal water pressure of the first water supply pipe 13 or the second water supply pipe 14 is lower than the internal pressure of the accumulator 701, the water in the accumulator 701 flows to the hydraulic system under the action of high-pressure gas, so that the abrupt change of the flow rate on the first water supply pipe 13 or the second water supply pipe 14 is slowed down, and the stability of water supply is ensured. Therefore, the abrupt change of the water supply amount caused when the three-position four-way hydraulic reversing valve 500 is switched in the oil way can be slowed down, so that the water pressure in the penetrometer 700 can be increased more gently and stably.
Preferably, the hydraulic osmotic pressure loading device 10 for rock permeation testing further comprises a pressure sensor 702, the pressure sensor 702 being arranged on the line between the accumulator 701 and the osmometer 700. The pressure of the pipeline can be observed in real time through the pressure sensor 702 so as to monitor and adjust the experimental process. Further preferably, the hydraulic osmotic pressure loading device 10 for rock permeation testing further comprises a flow sensor 703, the flow sensor 703 also being arranged on the line between the accumulator 701 and the permeameter 700. Likewise, the flow rate of water passing into the permeameter 700 can be observed in real time by the flow sensor 703 to monitor the experimental process.
It should be noted that, the pressure sensor 702 and the flow sensor 703 may be interchanged, that is, the pressure sensor 702 may be first disposed along the water flow direction, and then the flow sensor 703 may be disposed; the flow sensor 703 may be provided first in the water flow direction, and the pressure sensor 702 may be provided next.
From the above description of the structure of the hydraulic osmotic pressure loading device 10 for rock permeation test, the specific operation steps are as follows:
step 1: when the unidirectional variable pump 300 is started and the working position of the three-position four-way hydraulic reversing valve 500 is at the middle position, the double-acting booster cylinder 600 is tightly pinned, and the pipelines of all the oil ways and the water ways do not work and are in a standby state.
Step 2: when the left position of the three-position four-way hydraulic directional valve 500 is turned on, the first oil tank 200 starts to supply oil, and the oil enters the first oil chamber 630 of the double acting booster cylinder 600 through the first oil pipe 21. During the rightward movement of the piston rod 650, the volume of the first water chamber 610 increases, the water tank 100 starts to supply water, and the water flows into the first water chamber 610 through the first check valve 110 along the first water pipe 11 until the first water chamber 610 is filled with water. At the same time, the second water chamber 620 is reduced in volume and water flows through the fourth one-way valve 140 along the second water supply line 14 through the accumulator 701, the pressure sensor 702 and the flow sensor 703 into the permeameter 700 and acts on the rock being tested within the permeameter 700.
Step 3: when the piston rod 650 moves to the right to the limit position, that is, when the pressure of the first oil chamber 630 reaches the rated pressure of the first sequence valve 510, the first sequence valve 510 on the first control oil path 24 operates, so that the three-position four-way hydraulic reversing valve 500 is controlled to operate, and the three-position four-way hydraulic reversing valve 500 reverses to the right to continue to operate. During the rightward movement of the piston rod 650, the oil in the second oil chamber 640 flows back to the three-position four-way electromagnetic directional valve 500 and flows back to the third oil tank for storage.
Step 4: the three-position four-way hydraulic directional valve 500 is turned on to the right and oil enters the second oil chamber 640 of the double acting booster cylinder 600 through the second oil line 22. During the leftward movement of the piston rod 650, the volume of the second water chamber 620 increases, and the water tank 100 starts to supply water, and the water flows into the second water chamber 620 along the second water pipe 12 through the second check valve 120 until the second water chamber 620 is filled with water. At the same time, the first water chamber 610 is reduced in volume and water continues to enter the penetrometer 700 along the first water supply pipe 13 through the accumulator 701, the pressure sensor 702 and the flow sensor 703 through the third one-way valve 130 and continues to act on the rock being tested within the penetrometer 700.
Step 5: when the piston rod 650 moves leftwards to the limit position, that is, the pressure of the second oil chamber 640 of the double-acting booster cylinder 600 reaches the rated pressure of the second sequence valve 520, the second sequence valve 520 of the first control oil path 24 works, the three-position four-way hydraulic reversing valve 500 is controlled to work, and the three-position four-way hydraulic reversing valve 500 reverses to the left position and continues to work. During the leftward movement of the piston rod 650, the oil in the first oil chamber 630 flows back to the three-position four-way electromagnetic directional valve 500 and flows back to the third oil tank for storage.
Step 6: and (5) repeating the steps 2 to 5 to realize automatic and continuous water supply until the rock penetration test is completed.
Step 7: when the system is blocked, the pipeline pressure rises, the overflow valve 820 is opened, the unidirectional variable pump 300 is unloaded, and the working safety of the whole system is ensured.
In summary, the hydraulic osmotic pressure loading device for rock permeation test realizes the effects of automatic alternate water supply and water pumping of double waterways through the double-acting booster cylinder, and the two oil ways are controlled by pressure to form a reciprocating circulation loop, so that the automatic switching of double water supply channels and automatic water supply of the double-acting booster cylinder are controlled, and the defect of midway water supply interruption in the prior art when controlled by a water pump station, an oil pump station and an injector type energy storage device is overcome; meanwhile, a double-pipeline interaction working mode of oil supply-water supply of one pipeline and oil return-water pumping of the other pipeline is realized by utilizing the double-acting booster cylinder and the pressure control reciprocating circulation loop, so that the effect of automatic water pumping is achieved, a water pump station is replaced, and the defect that an overflow valve in the water pump station is easy to rust is overcome; and through the pipeline interaction of the double waterways and the double-type four-way pipeline and the double-channel water supply design, the automatic control of the osmotic pressure in the test process is realized, and the loaded pressure is stable, continuous and adjustable, so that the working time is saved, and the test cost is saved.
The above description is only of the preferred embodiments of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The hydraulic osmotic pressure loading device for rock permeation test is characterized by comprising a water tank (100), a first oil tank (200), a unidirectional variable pump (300), a speed regulating valve (400), a three-position four-way hydraulic reversing valve (500), a double-acting booster cylinder (600) and a permeameter (700), wherein the first oil tank (200), the unidirectional variable pump (300), the speed regulating valve (400), the three-position four-way hydraulic reversing valve, the double-acting booster cylinder (600) and the permeameter (700) are sequentially communicated, and the unidirectional variable pump (300) is communicated with a safety protection device (800);
the double-acting booster cylinder (600) comprises a first water cavity (610), a second water cavity (620), a first oil cavity (630) and a second oil cavity (640), wherein the first oil cavity (630) and the second oil cavity (640) are respectively communicated with the three-position four-way hydraulic reversing valve (500) through a first oil pipe (21) and a second oil pipe (22); the water tank (100) is communicated with the first water cavity (610) through a first water pipe (11) provided with a first one-way valve (110), and the water tank (100) is communicated with the second water cavity (620) through a second water pipe (12) provided with a second one-way valve (120); the first water cavity (610) is communicated with the permeameter (700) through a first water supply pipe (13) provided with a third one-way valve (130), and the second water cavity (620) is communicated with the permeameter (700) through a second water supply pipe (14) provided with a fourth one-way valve (140);
a first control oil way (24) for controlling the switching of the three-position four-way hydraulic reversing valve (500) is further arranged between the first oil cavity (630) and the three-position four-way hydraulic reversing valve (500), a second control oil way (25) for controlling the switching of the three-position four-way hydraulic reversing valve (500) is further arranged between the second oil cavity (640) and the three-position four-way hydraulic reversing valve (500), a first sequence valve (510) is arranged on the first control oil way (24), and a second sequence valve (520) is arranged on the second control oil way (25);
the double-acting booster cylinder (600) is internally provided with a piston rod (650), a first piston (660) is arranged at the central position of the rod part of the piston rod (650), two ends of the piston rod (650) are respectively provided with a second piston (670) and a third piston (680), the first piston (660), the second piston (670) and the third piston (680) are fixedly connected with the piston rod (650), the first piston (660) is positioned in an oil cavity of the double-acting booster cylinder (600), two sides of the first piston (660) respectively form a first oil cavity (630) and a second oil cavity (640) which are isolated from each other, the second piston (670) is positioned in the first water cavity (610), and the third piston (680) is positioned in the second water cavity (620).
2. The hydraulic osmotic pressure loading device for rock permeation test according to claim 1, wherein a filter (201) is further provided between the first oil tank (200) and the unidirectional variable pump (300), and both ends of the filter (201) are respectively communicated with the first oil tank (200) and the unidirectional variable pump (300).
3. The hydraulic osmotic pressure loading device for rock permeation test according to claim 1, wherein a cooler (301) is further arranged between the unidirectional variable pump (300) and the three-position four-way hydraulic reversing valve (500), and two ends of the cooler (301) are respectively communicated with the unidirectional variable pump (300) and the speed regulating valve (400).
4. The hydraulic osmotic pressure loading device for rock permeation test according to claim 1, further comprising an accumulator (701), wherein the accumulator (701) is arranged between the double-acting booster cylinder (600) and the permeameter (700), wherein the first water supply pipe (13) and the second water supply pipe (14) are both communicated with the water inlet end of the accumulator (701), and the water outlet end of the accumulator (701) is communicated with the permeameter (700).
5. The hydraulic osmotic pressure loading device for rock permeation testing according to claim 4, further comprising a pressure sensor (702), the pressure sensor (702) being arranged on a pipeline between the accumulator (701) and the permeameter (700).
6. The hydraulic osmotic pressure loading device for rock permeation testing according to claim 4, further comprising a flow sensor (703), the flow sensor (703) being arranged on a pipeline between the accumulator (701) and the permeameter (700).
7. The hydraulic osmotic pressure loading device for rock permeation test according to any one of claims 1 to 6, wherein the first sequence valve (510) and the second sequence valve (520) are both internal control and external release sequence valves.
8. Hydraulic osmotic pressure loading device for rock permeation test according to any of claims 1-6, characterized in that the safety protection device (800) comprises an overflow valve (820), which overflow valve (820) communicates with the piping between the unidirectional variable pump (300) and the speed valve (400) through a third oil pipe (23).
9. The hydraulic osmotic pressure loading device for rock permeation test according to claim 8, wherein the safety protection device (800) further comprises a second oil tank (810), and the outlet end of the overflow valve (820) is in communication with the second oil tank (810).
10. Hydraulic osmotic pressure loading device for rock penetration test according to claim 8, characterized in that the third oil pipe (23) is further provided with a pressure gauge (810).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223419.9A CN106525693B (en) | 2016-12-27 | 2016-12-27 | Hydraulic osmotic pressure loading device for rock osmotic test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223419.9A CN106525693B (en) | 2016-12-27 | 2016-12-27 | Hydraulic osmotic pressure loading device for rock osmotic test |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106525693A CN106525693A (en) | 2017-03-22 |
| CN106525693B true CN106525693B (en) | 2023-04-21 |
Family
ID=58338338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611223419.9A Active CN106525693B (en) | 2016-12-27 | 2016-12-27 | Hydraulic osmotic pressure loading device for rock osmotic test |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106525693B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107014734A (en) * | 2017-05-16 | 2017-08-04 | 山东大学 | One kind is used for tunnel surrounding internal penetration device for pressure measurement and measuring method |
| CN108956409B (en) * | 2017-05-19 | 2021-01-29 | 中国地质科学院水文地质环境地质研究所 | Micro-pressure permeameter and test method |
| CN107941676B (en) * | 2017-12-12 | 2019-11-22 | 中国矿业大学 | A kind of pollution preparation of soil sample and testing permeability is detecting device integrated and method |
| CN109253927A (en) * | 2018-08-18 | 2019-01-22 | 中山大学 | A kind of permeable circulating pressure room of the all-pass of rock test |
| CN109142194A (en) * | 2018-11-09 | 2019-01-04 | 北京华横新技术开发公司 | Impermeability test equipment and anti-leakage detector for water |
| CN112630118B (en) * | 2020-11-16 | 2022-07-26 | 苏州开洛泰克科学仪器科技有限公司 | Gas permeability measuring device and measuring method for compact material |
| CN113565821A (en) * | 2021-06-30 | 2021-10-29 | 郑州磨料磨具磨削研究所有限公司 | Hydraulic stop valve capable of adjusting closing pressure and hydraulic system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203584934U (en) * | 2013-12-09 | 2014-05-07 | 隋文臣 | Double-cavity pressurized oil cylinder device |
| CN103760087B (en) * | 2014-01-21 | 2016-01-06 | 盐城工学院 | For the permeability apparatus of the continuous pressurization of Seepage of Rock Masses test |
| CN104316447A (en) * | 2014-10-28 | 2015-01-28 | 中国矿业大学 | Fractured rock mass stress and seepage coupled testing system and method |
| CN205067291U (en) * | 2015-10-23 | 2016-03-02 | 盐城工学院 | Permeability test device that syringe formula and pump station formula are compatible |
| CN205067278U (en) * | 2015-10-23 | 2016-03-02 | 盐城工学院 | Axial loading permeability test device |
| CN105181557A (en) * | 2015-10-23 | 2015-12-23 | 盐城工学院 | Injector and pump station compatible penetration test device |
| CN105675472B (en) * | 2016-04-01 | 2018-02-06 | 盐城工学院 | A kind of sustainable plus sand pumping plant formula fractured rock infiltration experiment device |
| CN105628589B (en) * | 2016-04-01 | 2018-02-06 | 盐城工学院 | A kind of sustainable plus sand syringe type fractured rock infiltration experiment device |
| CN105628590B (en) * | 2016-04-01 | 2018-02-06 | 盐城工学院 | A kind of experimental rig for fractured rock water sand two phase fluid flow |
-
2016
- 2016-12-27 CN CN201611223419.9A patent/CN106525693B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN106525693A (en) | 2017-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106525693B (en) | Hydraulic osmotic pressure loading device for rock osmotic test | |
| CN107567547B (en) | System and method for the shared manifold with integrated hydraulic energy transfer system | |
| CN105889159A (en) | Hydraulic system with ultra-high pressure outputting capacity | |
| CN112594233B (en) | Pressure boost oil feeding system | |
| CN105782147A (en) | Double-acting hydraulic control system of supercharging device | |
| EP0057996A1 (en) | Fluid piston device | |
| CN102330712A (en) | Sectional hydraulic synchronous circuit | |
| CN110228774A (en) | A kind of fork truck and forklift door frame hydraulic system for lifting | |
| US3077838A (en) | Pipeless pumping | |
| CN106525694B (en) | Electromagnetic induction type osmotic pressure loading device for rock permeability test | |
| JPH0392602A (en) | Means for accepting hydraulic oil in and then discharging the same from hydraulic system | |
| EP4285026A1 (en) | Conveying device | |
| JP6681039B2 (en) | Hydraulic cylinder device with oil leakage detection mechanism | |
| KR101552550B1 (en) | Hydraulic driving apparatus for wearable robot | |
| CN206369680U (en) | A kind of fluid pressure type osmotic pressure loading device for In Rock Seepage Tests | |
| CN203879823U (en) | Hydraulic control loop used for adjusting unloading speed | |
| GB2190712A (en) | Pump drive apparatus | |
| CN110259743A (en) | A kind of hydraulic cylinder autonomous control system of rock triaxial creep testing machine | |
| JP6681043B2 (en) | Hydraulic system and method for removing foreign matter in hydraulic cylinder of the hydraulic system | |
| CN108571492A (en) | A kind of hydraulic cylinder endurance test test device | |
| US3234883A (en) | Hydraulic intensifier system | |
| CN102803746A (en) | Arrangement for controlling the position of a device with a fluid pressure-driven piston-cylinder arrangement | |
| CN209458210U (en) | The hydraulic commutation denoising device of natural gas compression equipment | |
| RU2521757C1 (en) | Hydraulic press | |
| CN206281758U (en) | A kind of induction osmotic pressure loading device for In Rock Seepage Tests |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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 |