CN219391640U - Integrated oil-filled pressurizing system for pressure chamber of rock mechanical testing machine - Google Patents
Integrated oil-filled pressurizing system for pressure chamber of rock mechanical testing machine Download PDFInfo
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- CN219391640U CN219391640U CN202320335175.2U CN202320335175U CN219391640U CN 219391640 U CN219391640 U CN 219391640U CN 202320335175 U CN202320335175 U CN 202320335175U CN 219391640 U CN219391640 U CN 219391640U
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Abstract
The utility model provides an integrated oil-filled pressurizing system for a pressure chamber of a rock mechanical testing machine, which comprises the pressure chamber, an oil-filled system and a pressurizing system which are communicated with each other; the oil filling system comprises an oil tank, a servo valve and a one-way valve which are sequentially connected, and the one-way valve is communicated with the pressure chamber; an oil pump is arranged in the oil tank; the supercharging system comprises a single-stage supercharger and a first pressure gauge arranged at the outlet end of the single-stage supercharger; the single-stage booster comprises a piston, a high-pressure cavity and a low-pressure cavity which are arranged at two ends of the piston and are mutually independent; the boosting multiple of the single-stage booster is 4-6 times; the oil outlet of the oil tank is communicated with the P oil port of the servo valve, the A oil port of the servo valve is connected with the inlet end of the one-way valve, the outlet end of the one-way valve is respectively communicated with the pressure chamber and the high-pressure chamber, the high-pressure chamber is communicated with the pressure chamber, and the B oil port of the servo valve is communicated with the low-pressure chamber. The single-stage supercharger has the advantages of high energy utilization efficiency, large supercharging multiple, low maintenance cost, cost saving and small occupied space.
Description
Technical Field
The utility model relates to the technical field of rock mechanical testing machines, in particular to an integrated oil-filled pressurizing system for a pressure chamber of a rock mechanical testing machine.
Background
The rock mechanical testing machine is an instrument for measuring rock mechanical parameters, and can help researchers evaluate basic mechanical parameters of rock, such as breaking stress, rock strength, deformation characteristics and the like. The pressure chamber type testing machine is a rock mechanical testing machine with wider application, and the confining pressure providing mode of the testing machine is generally as follows: firstly, hydraulic oil is injected into the pressure chamber to provide certain confining pressure for the pressure chamber, namely oil filling is carried out; and then the pressurizing device further provides hydraulic oil for the pressure chamber as the supplementary pressure so as to enable the pressure chamber to reach a preset confining pressure value, namely pressurizing.
At present, most devices for providing supplemental pressure (i.e. supercharging) for a pressure chamber in a rock mechanics testing machine are screw superchargers, and the concrete process is that oil is filled into the pressure chamber through a set of pumping devices, and then the pressure chamber is supercharged through another power device (a motor) communicated with the screw superchargers (because if only a single motor matched with the screw superchargers is used for filling oil first and then supercharging, the oil filling efficiency is very low, the oil pressure required by the pressure chamber is larger, the oil filling amount is more, and therefore, the oil is filled by a pump with larger power first). In the process, (1) oil filling and pressurization are realized through two sets of power devices, so that the occupied space of the devices can be increased; (2) The pressurizing cavities of the pressure chamber and the screw pressurizer are respectively filled with liquid through different pipelines, the pipeline design is complex, the occupied space is further increased, the provided pressure is lower, the energy utilization rate is low, and the energy consumption is high; (3) After the pressurization is finished or before the next pressurization, the screw of the screw pressurizer needs to be restored to the initial position so as to meet the operation steps of the full-range pressurization range. Therefore, the traditional screw supercharger has the advantages of large occupied space, high energy consumption, complex operation and poor pressure control stability.
In view of the foregoing, there is a need for an improved integrated oil-filled pressurization system for a pressure chamber of a rock mechanics testing machine that addresses the above-described issues.
Disclosure of Invention
The utility model aims to provide an integrated oil-filling pressurization system for a pressure chamber of a rock mechanical testing machine, which is characterized in that the oil-filling system and the pressurization system are connected through a part of shared pipelines, meanwhile, through reasonable arrangement of a single-stage booster and a servo valve, oil filling and pressurization operation can be completed through only one pump, the energy utilization efficiency of the single-stage booster is higher, the energy consumption is low, the pressurization multiple is larger, the hydraulic output in the pressurization process is stable, the pressure control is more accurate, the failure rate is low, the maintenance cost is low, the occupied space is small, the weight is light, the movement inertia is small, and the machine is simple.
In order to achieve the above purpose, the utility model provides an integrated oil-filled pressurizing system for a pressure chamber of a rock mechanical testing machine, which comprises the pressure chamber, and further comprises an oil-filled system and a pressurizing system which are communicated with each other;
the oil filling system comprises an oil tank, a servo valve and a one-way valve which are sequentially connected, and the one-way valve is communicated with the pressure chamber; an oil pump is arranged in the oil tank; the servo valve is a four-way throttling type flow control valve; the supercharging system comprises a single-stage supercharger and a first pressure gauge arranged at the outlet end of the single-stage supercharger; the single-stage booster comprises a piston, and a high-pressure cavity and a low-pressure cavity which are arranged at two ends of the piston and are mutually independent; the boosting multiple of the single-stage booster is 4-6 times;
the oil outlet of the oil tank is communicated with the P oil port of the servo valve, the A oil port of the servo valve is connected with the inlet end of the one-way valve, the outlet end of the one-way valve is respectively communicated with the pressure chamber and the high-pressure chamber, the high-pressure chamber is communicated with the pressure chamber, and the B oil port of the servo valve is communicated with the low-pressure chamber.
As a further improvement of the utility model, the oil inlet end of the pressure chamber is provided with a pressure sensor.
As a further improvement of the utility model, an accumulator for stabilizing the pressure of the oil pump is arranged between the oil tank and the P oil port of the servo valve.
As a further improvement of the utility model, a second pressure gauge is arranged between the oil port B of the servo valve and the low-pressure cavity of the single-stage booster.
As a further improvement of the utility model, the oil outlet end of the high-pressure cavity of the single-stage supercharger is provided with a first valve.
As a further improvement of the utility model, the oil inlet end of the pressure chamber is provided with a second valve.
As a further improvement of the utility model, the oil inlet pipe of the integrated oil-filled pressurizing system for the pressure chamber of the rock mechanical testing machine is detachably connected with the pressure chamber through an oil inlet pipe quick plug.
As a further improvement of the utility model, the servo valve is a MOOG valve.
As a further improvement of the present utility model, the MOOG valve is a MOOG761 series servo valve, and the response speed of the MOOG761 series servo valve is 0.01 millisecond.
As a further improvement of the utility model, the oil outlet end of the one-way valve is provided with a third valve.
The beneficial effects of the utility model are as follows:
(1) According to the integrated oil-filling pressurizing system for the pressure chamber of the rock mechanical testing machine, the oil-filling system and the pressurizing system are connected through the part of shared pipelines, and meanwhile, through reasonable arrangement of the single-stage pressurizer and the servo valve, oil-filling and pressurizing operations can be completed through only one pump.
The oil filling system and the pressurizing system are connected with the pressure chamber through part of common pipelines, so that the arrangement of pipelines is reduced, the high-pressure chamber is filled with oil in the process of filling the pressure chamber, the low-pressure chamber is only filled with oil in the subsequent pressurizing process, and the high-pressure chamber is not required to be filled with oil again. And the oil filling system and the pressurizing system form a loop, when the high-pressure cavity is filled with oil, the piston of the single-stage supercharger automatically returns to the original position, the return operation is not required to be independently carried out, and the operation flow is simplified.
(2) According to the integrated oil-charging pressurization system for the pressure chamber of the rock mechanical testing machine, the single-stage booster is used for replacing a traditional screw booster, meanwhile, pipelines are optimally designed, the energy utilization efficiency of the single-stage booster is higher, the energy consumption is low, the pressurization multiple is larger, the pressure control in the pressurization process is more accurate, the maintenance cost is low, the cost is saved, and the occupied space is small.
Drawings
Fig. 1 is a schematic structural diagram of an integrated oil-filled pressurization system for a pressure chamber of a rock mechanical testing machine.
Fig. 2 is a schematic diagram of a single stage supercharger.
FIG. 3 is a diagram of the connection between the ports of the servo valve during the oil filling process.
Fig. 4 is a diagram of the connection relationship between the oil ports of the servo valve in the pressurizing process.
Reference numerals
1-a pressure chamber; 2-an oil-filled system; 3-a supercharging system; 4-a pressure sensor; 5-an accumulator; 6-a first valve; 7-a second valve; 8-an oil inlet pipe quick plug; 9-a third valve; 21-an oil tank; 22-servo valve; 23-a one-way valve; 24-oil pump; 31-a single stage booster; 32-a first pressure gauge; 33-a second pressure gauge; 311-piston; 312-high pressure chamber; 313-low pressure chamber.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be described in detail with reference to the accompanying drawings and specific embodiments.
It should be noted that, in order to avoid obscuring the present utility model due to unnecessary details, only structures and/or processing steps closely related to aspects of the present utility model are shown in the drawings, and other details not greatly related to the present utility model are omitted.
In addition, it should be further noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Referring to fig. 1 to 4, the utility model provides an integrated oil-filled pressurizing system for a pressure chamber of a rock mechanical testing machine, which comprises a pressure chamber 1, and further comprises an oil-filled system 2 and a pressurizing system 3 which are mutually communicated, wherein the oil-filled system 2 and the pressurizing system 3 are both communicated with the pressure chamber 1.
The oil filling system 2 comprises an oil tank 21, a servo valve 22 and a one-way valve 23 which are sequentially connected, and the one-way valve 23 is communicated with the pressure chamber 1; the oil tank 21 is provided with an oil pump 24 for providing a power source; the servo valve 22 is a four-way throttle flow control valve, and specifically comprises a P oil port, an a oil port, a T oil port and a B oil port, and the servo valve 22 is a two-way servo valve, that is, the servo valve 22 can change the flow direction of hydraulic oil in an oil filling pipeline and a pressurizing pipeline, and can change the flow of the hydraulic oil.
The supercharging system 3 comprises a single stage supercharger 31 and a first pressure gauge 32 arranged at the outlet end of the single stage supercharger. As shown in fig. 2, the single-stage booster 31 includes a piston 311, and a high-pressure chamber 313 and a low-pressure chamber 312 which are provided at both ends of the piston 311 and are independent of each other, and the first pressure gauge 32 is provided at a side close to the high-pressure chamber 313 of the single-stage booster 31. The single-stage booster 31 has a boost ratio of 4 to 6 times, preferably 5 times, for example, hydraulic oil having a pressure of 1MPa from the oil pump 24 enters the low-pressure chamber 312 of the single-stage booster 31, the pressure of hydraulic oil outputted from the high-pressure chamber 313 of the single-stage booster 31 is 5MPa, and the pressure of hydraulic oil outputted from the high-pressure chamber 313 of the single-stage booster 31 is generally 0.1MPa to 100MPa. According to the experimental scheme requirement, the boost ratio of the single-stage booster 31 depends on the piston area ratio of the high-pressure chamber 313 and the low-pressure chamber 312 of the single-stage booster 31, and in this embodiment, the piston area ratio of the high-pressure chamber 313 and the low-pressure chamber 312 is 5, i.e., the boost ratio of the single-stage booster 31 is 5 times.
The oil outlet of the oil tank 21 is communicated with the P oil port of the servo valve 22, the A oil port of the servo valve 22 is connected with the inlet end of the one-way valve 23, the outlet end of the one-way valve 23 is respectively communicated with the pressure chamber 1 and the high-pressure cavity 313 of the single-stage booster 31, the high-pressure cavity 313 of the single-stage booster 31 is communicated with the pressure chamber 1, the B oil port of the servo valve 22 is communicated with the low-pressure cavity 312 of the single-stage booster 31, and the T oil port of the servo valve 22 is communicated with the oil tank 21. So arranged, the oil filling pipeline is an oil tank 21, a servo valve 22, a one-way valve 23 and a pressure chamber 1 which are communicated in sequence; the pressurizing pipeline comprises an oil tank 21, a servo valve 22, a single-stage pressurizer 31 and a pressure chamber 1. At the same time, an oil path is formed among the oil tank 21, the servo valve 22 and the single-stage booster 31.
The process of filling oil and pressurizing the pressure chamber 1 is specifically as follows: (1) In the oil filling process, the connection relation of the oil ports of the servo valve 22 is shown in fig. 3, hydraulic oil is pumped into the servo valve 22 by the oil pump 24, at this time, the oil port P is communicated with the oil port a, the oil port B is communicated with the oil port T (the arrow shows the flow direction of the hydraulic oil), and after the hydraulic oil sequentially passes through the oil port P, the oil port a and the check valve 23, a part of the hydraulic oil enters the pressure chamber 1 to provide a certain confining pressure for the pressure chamber, and another part of the hydraulic oil enters the high-pressure chamber 313 of the single-stage booster 31. Meanwhile, the hydraulic oil in the low-pressure chamber 312 of the single-stage booster 31 (the hydraulic oil of the previous boosting process) sequentially passes through the B port and the T port under the pushing of the hydraulic oil in the high-pressure chamber 313, and then enters the oil tank 21 again. Therefore, firstly, the oil filling system 2 and the pressurizing system 3 are connected with the pressure chamber 1 through part of common pipelines, so that the pipeline layout is reduced, the high-pressure chamber 313 is filled with oil during the oil filling process of the pressure chamber 1, and the low-pressure chamber 312 is only filled with oil during the subsequent pressurizing process; the traditional screw supercharger needs independent pipelines for filling the pressure chamber and the pressurizing cavity of the screw supercharger, and the oil filling of the pressurizing cavity cannot be directly realized in the oil filling process, but an additional power device is needed for filling the pressurizing cavity of the screw supercharger. Secondly, the oil charging system 1 and the pressurization system 2 of the present application are mutually communicated, when the pressure chamber 1 is charged with oil, not only the high-pressure chamber 313 of the single-stage booster 31 is charged with oil, but also the hydraulic oil in the high-pressure chamber 313 can push the piston 311 to return to the original position in the process, namely, the oil charging process can directly press the hydraulic oil in the low-pressure chamber 313 into the oil tank 21 during the previous pressurization operation, so that the piston 311 of the single-stage booster 31 returns to the original position, the hydraulic oil amount capable of entering the high-pressure chamber 313 is increased, the pressurization multiple is increased, meanwhile, the layout of pipelines is further reduced, the whole process is more consistent, and the operation procedure is simplified. However, after the pressurization of the conventional screw supercharger is finished or before the next pressurization, the screw of the supercharger needs to be restored to the initial position, namely, independent homing operation is needed. (2) In the pressurizing process, as shown in fig. 4, the connection relationship between the oil ports of the servo valve 22 is that the hydraulic oil is pumped into the servo valve 22 by the oil pump 24, at this time, the oil port P is communicated with the oil port B, the hydraulic oil sequentially passes through the oil port P and the oil port B to enter the low pressure cavity 312 of the single-stage supercharger 31, the piston 311 moves upwards along with the continuous pumping of the hydraulic oil into the low pressure cavity 312 by the oil pump 24, the output of the hydraulic oil of the high pressure cavity 313 is pushed, and the output hydraulic oil enters the pressure chamber 1 after being pressurized, so that the pressurizing of the pressure chamber 1 is realized. Although the port a communicates with the port T (the arrow shows the flow direction of the hydraulic oil) at this time, the hydraulic oil does not flow backward due to the presence of the check valve 23.
In some embodiments, the servo valve 22 is a MOOG valve, which is more accurate in control accuracy and more stable in performance than a conventional servo valve. The servo valve 22 is preferably a MOOG761 series servo valve, the response speed of the MOOG761 series servo valve is only 0.01 millisecond, and the response speed reaches one flow in the industry, so that the oil-filled pressurizing system responds faster, and the pressure maintaining of the pressure chamber 1 is more stable.
The single stage booster 31 used in the present application has advantages over the conventional screw booster in that: (1) The single-stage booster 31 can reach the expected pressure only by one-time boosting, and the screw booster needs multiple boosting, so that the single-stage booster 31 has higher energy utilization efficiency, and the screw booster has relatively lower energy utilization efficiency. This is mainly due to the difference in structure between the two, and the single-stage booster 31 is composed of a compression chamber and a piston, and its principle of operation is that the piston moves up and down in the compression chamber and compresses low-pressure oil to a higher pressure. The screw supercharger consists of a compression chamber, a piston and a screw, and the working principle is that the piston compresses low-pressure oil to a certain pressure, and then the screw compresses the compressed oil to a higher pressure again, and the energy utilization rate of the screw supercharger can be reduced in the multiple conversion process. (2) The single-stage booster 31 has larger compression ratio, more accurate pressure control, higher energy utilization efficiency and lower maintenance cost; the screw supercharger has smaller compression ratio, inaccurate pressure control, lower energy utilization efficiency and higher maintenance cost.
As shown in fig. 1, an accumulator 5 for stabilizing the pressure of the oil pump 24 is provided between the oil tank 21 and the P port of the servo valve 22. The accumulator 5 can absorb hydraulic impact and eliminate pulsation, so that the oil pressure passing through the servo valve 22 is stable, thereby providing a stable pressure environment for rock pressure test and improving the accuracy of measurement.
The outlet end of the high pressure chamber 313 of the single-stage booster 31 is provided with a first pressure gauge 32. So configured, stability and continuity of the pressurization process may be achieved by controlling the pressure value of the pressure gauge 32.
The oil inlet end of the pressure chamber 1 is provided with the pressure sensor 4, so that the pressure change is monitored in real time by using the pressure sensor 4 while the pressure boost is regulated and controlled by the first pressure gauge 32, and the rock test process is in a stable pressure state. In some embodiments, an alarm may be provided at the pressure sensor 4, by which the staff is alerted to adjust the pressure when the pressure value of the boosting process exceeds or falls below a preset pressure value.
In other embodiments, a second pressure gauge 33 is disposed between port B of the servo valve 22 and the low pressure chamber 312 of the single stage booster 31. So configured, the second pressure gauge 33 monitors the oil pressure entering the low pressure chamber 312, and the first pressure gauge 32 monitors the oil pressure output from the high pressure chamber 313, and the pressure data relationship between the two pressure gauges can be used to monitor whether the boost multiple of the single-stage booster 31 is the same as the theoretical value, so as to determine whether the single-stage booster works normally, and indirectly monitor the performance of the single-stage booster 31.
The oil outlet end of the high-pressure cavity 313 of the single-stage supercharger 31 is provided with a first valve 6. In this way, the oil filling process can selectively fill the high pressure chamber 313 of the single stage booster 31, so that the two chambers form mutually independent passages.
The oil inlet end of the pressure chamber 1 is provided with a second valve 7, and the second valve can be closed when the pressure reaches a preset value; or is closed after the completion of the filling and pressurizing, and the hydraulic oil in the oil tank 21 is prevented from leaking. The positions of the pressure sensor 4 and the second valve 7 may be interchanged.
The oil inlet pipe of the integrated oil-filled pressurizing system for the pressure chamber of the rock mechanical testing machine is detachably connected with the pressure chamber 1 through an oil inlet pipe quick plug 8. So arranged, maintenance and repair of the system or pressure chamber 1 is facilitated.
In some embodiments, the integrated oil-filled pressurization system for a rock mechanics tester pressure chamber further includes an automatic control system. The automatic control system is used for regulating and controlling the opening and closing of the first valve 6, the second valve 7, the third valve 9, the servo valve 22, the one-way valve 23 and the oil pump 24, and is used for monitoring and adjusting the data of the pressure sensor 4, the first pressure gauge 32 and the second pressure gauge 33. The pressure sensor 4 monitors the pressure change in real time and feeds back the pressure value to the automatic control system, and the automatic control system adjusts the flow of the servo valve 22 in real time according to the feedback value.
The working principle of the integrated oil-filled pressurizing system for the pressure chamber of the rock mechanical testing machine comprises the following steps:
s1, oil filling:
the filling command is input into the automatic control system, the oil pump 24, the third valve 9, the second valve 7 and the first valve 6 are opened (the oil pump 24, the third valve 9, the second valve 7 and the first valve 6 can also be opened manually without being controlled by the automatic control system, if the automatic control system is needed to regulate and control, the valves are needed to be electric valves, the check valve 23 is used as a passive element without being controlled manually), meanwhile, the servo valve 22 is powered on, the A, P oil port is communicated, the B, T oil port is communicated, hydraulic oil sequentially passes through the oil pump 24, the servo valve 22, the check valve 23 and the third valve 9, then a part of hydraulic oil passes through the second valve 7 and the oil inlet pipe quick plug 8 to reach the pressure chamber 1, the other part of hydraulic oil passes through the first valve 6 to reach the high-pressure chamber 313 of the single-stage booster 31, the single-stage booster 31 is filled with hydraulic oil, and the piston 311 of the single-stage booster 31 returns to the initial pressurizing position, and the hydraulic oil in the low-pressure chamber 312 flows back to the oil tank 21 through the BT oil port of the servo valve 22. Since the volume of the high pressure chamber 313 of the single-stage booster 31 is much smaller than the volume of the pressure chamber 1, the interior of the high pressure chamber 313 of the single-stage booster 31 is already filled before the pressure chamber 1 is filled with hydraulic oil, and the piston 311 returns to the initial pressurizing position.
After the automatic control system indicates that the oil filling is finished, a stopping liquid filling command is input, and the oil pump 24, the one-way valve 23, the third valve 9, the second valve 7, the first valve 6 and the servo valve 22 are all closed to stop working.
S2, pressurizing:
the oil pressure command is input into the automatic control system, the oil pump 24, the first valve 6 and the second valve 7 are opened, meanwhile, the servo valve 22 is electrified, the A, T oil port is communicated, the B, P oil port is communicated, hydraulic oil sequentially enters the low-pressure cavity 312 of the single-stage supercharger 31 through the P oil port and the B oil port, along with the continuous pumping of the hydraulic oil into the low-pressure cavity 312 by the oil pump 24, the piston 311 moves upwards to push the hydraulic oil output of the high-pressure cavity 313, and the output hydraulic oil enters the pressure chamber 1 after being pressurized, so that the pressurization of the pressure chamber 1 is realized. When the piston 311 completes one stroke, the servo valve 22 is closed, and the output pressure reaches the highest value. Although the port a communicates with the port T (the arrow shows the flow direction of the hydraulic oil) at this time, the hydraulic oil does not flow backward due to the presence of the check valve 23 and the closing of the third valve 9.
After the test is completed, the hydraulic oil in the pressure chamber 1 is returned to the oil tank 21 through an oil return line, which is not shown in the drawing.
In summary, according to the integrated oil-charging pressurization system for the pressure chamber of the rock mechanical testing machine provided by the utility model, the oil-charging system and the pressurization system are connected through the partially shared pipeline, meanwhile, the oil-charging and pressurization operation can be completed through reasonable arrangement of the single-stage booster and the servo valve, and the single-stage booster has the advantages of higher energy utilization efficiency, low energy consumption, larger pressurization multiple, more accurate pressure control in the pressurization process, low maintenance cost, cost saving and small occupied space.
The above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model.
Claims (10)
1. The integrated oil-filled pressurizing system for the pressure chamber of the rock mechanical testing machine comprises the pressure chamber and is characterized by also comprising an oil-filled system and a pressurizing system which are communicated with each other;
the oil filling system comprises an oil tank, a servo valve and a one-way valve which are sequentially connected, and the one-way valve is communicated with the pressure chamber; an oil pump is arranged in the oil tank; the servo valve is a four-way throttling type flow control valve; the supercharging system comprises a single-stage supercharger and a first pressure gauge arranged at the outlet end of the single-stage supercharger; the single-stage booster comprises a piston, and a high-pressure cavity and a low-pressure cavity which are arranged at two ends of the piston and are mutually independent; the boosting multiple of the single-stage booster is 4-6 times;
the oil outlet of the oil tank is communicated with the P oil port of the servo valve, the A oil port of the servo valve is connected with the inlet end of the one-way valve, the outlet end of the one-way valve is respectively communicated with the pressure chamber and the high-pressure chamber, the high-pressure chamber is communicated with the pressure chamber, and the B oil port of the servo valve is communicated with the low-pressure chamber.
2. The integrated oil-filled pressurization system for a pressure chamber of a rock mechanical testing machine according to claim 1, wherein a pressure sensor is arranged at an oil inlet end of the pressure chamber.
3. The integrated oil-filled pressurization system for a pressure chamber of a rock mechanical testing machine according to claim 1, wherein an accumulator for stabilizing the pressure of the oil pump is provided between the oil tank and the P-port of the servo valve.
4. The integrated oil-filled boost system for a rock mechanics tester pressure chamber of claim 1 wherein a second pressure gauge is provided between port B of the servo valve and the low pressure chamber of the single stage booster.
5. The integrated oil-filled boost system for a rock mechanics tester pressure chamber of claim 1 wherein said single stage booster has said high pressure chamber oil outlet end provided with a first valve.
6. The integrated oil-filled and pressurized system for a pressure chamber of a rock mechanics tester of claim 1, wherein the pressure chamber oil inlet end is provided with a second valve.
7. The integrated oil-filled and pressurized system for a rock mechanical testing machine pressure chamber of claim 1, wherein the oil inlet pipe of the integrated oil-filled and pressurized system for a rock mechanical testing machine pressure chamber is detachably connected with the pressure chamber through an oil inlet pipe quick plug.
8. The integrated oil filled pressurization system for a rock mechanics tester pressure chamber of claim 1 wherein said servo valve is a MOOG valve.
9. The integrated oil and pressure charge system for a rock mechanics tester pressure chamber of claim 8 wherein the MOOG valve is a MOOG761 series servo valve and the response speed of the MOOG761 series servo valve is 0.01 milliseconds.
10. The integrated oil-filled and pressurized system for a pressure chamber of a rock mechanics tester of claim 1 wherein said one-way valve outlet is provided with a third valve.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320335175.2U CN219391640U (en) | 2023-02-28 | 2023-02-28 | Integrated oil-filled pressurizing system for pressure chamber of rock mechanical testing machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202320335175.2U CN219391640U (en) | 2023-02-28 | 2023-02-28 | Integrated oil-filled pressurizing system for pressure chamber of rock mechanical testing machine |
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| CN219391640U true CN219391640U (en) | 2023-07-21 |
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| CN202320335175.2U Active CN219391640U (en) | 2023-02-28 | 2023-02-28 | Integrated oil-filled pressurizing system for pressure chamber of rock mechanical testing machine |
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