CN108131355B - Pressure compensation device for pressure relief detection of underwater appliance and capable of automatically supplementing oil and maintaining pressure - Google Patents
Pressure compensation device for pressure relief detection of underwater appliance and capable of automatically supplementing oil and maintaining pressure Download PDFInfo
- Publication number
- CN108131355B CN108131355B CN201810029132.5A CN201810029132A CN108131355B CN 108131355 B CN108131355 B CN 108131355B CN 201810029132 A CN201810029132 A CN 201810029132A CN 108131355 B CN108131355 B CN 108131355B
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- piston rod
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- 238000001514 detection method Methods 0.000 title claims description 11
- 230000001502 supplementing effect Effects 0.000 title claims description 10
- 238000007789 sealing Methods 0.000 claims abstract description 42
- 239000010985 leather Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 abstract description 41
- 239000007788 liquid Substances 0.000 abstract description 6
- 239000013589 supplement Substances 0.000 description 7
- 239000012530 fluid Substances 0.000 description 6
- 230000006698 induction Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000012544 monitoring process Methods 0.000 description 3
- 238000005299 abrasion Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 230000009469 supplementation Effects 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B21/00—Common features of fluid actuator systems; Fluid-pressure actuator systems or details thereof, not covered by any other group of this subclass
- F15B21/006—Compensation or avoidance of ambient pressure variation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B19/00—Testing; Calibrating; Fault detection or monitoring; Simulation or modelling of fluid-pressure systems or apparatus not otherwise provided for
- F15B19/005—Fault detection or monitoring
-
- 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
- F15B20/00—Safety arrangements for fluid actuator systems; Applications of safety devices in fluid actuator systems; Emergency measures for fluid actuator systems
- F15B20/005—Leakage; Spillage; Hose burst
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Actuator (AREA)
Abstract
The pressure compensation device comprises a cylinder body, a piston, a sealing leather bag, a piston rod, a proximity unit sleeve, a proximity switch support, a tension spring and an oil storage cavity, wherein the upper end of the cylinder body is fastened at the lower end of the proximity switch support; therefore, the automatic compensation device has the advantages of simple structure, simple and convenient control and stable operation, can effectively balance the internal pressure and the external pressure of the transmission device, can automatically compensate in time after oil seepage or oil leakage of the compensated device is detected, and avoids damage to the transmission device caused by external liquid seepage into the transmission device.
Description
Technical Field
The invention relates to the technical field of pressure compensation of underwater engineering machinery, in particular to a pressure compensation device which is used for pressure relief detection of an underwater appliance of a hydraulic system transmission device in a pressure increasing environment (such as underwater or in slurry) and can automatically supplement oil and maintain pressure.
Background
For transmissions operating in an environment of increased pressure (e.g., in water or mud), the internal and external pressure differentials of the transmission can cause seal damage, and in order to reduce the risk of seal damage, pressure compensation of the transmission interior is required to ensure that the transmission interior pressure is balanced with or slightly higher than ambient pressure.
The existing pressure compensation devices comprise a leather bag type, a metal foil mode and a bellows type, and although certain amount of pressure compensation can be carried out, the practice proves that the effect is not ideal, whether the transmission device leaks oil or not can not be detected, and the transmission device can not be automatically replenished after oil leaks.
In the prior art, there is also an active control pressure compensation technology, which actively sets the pressure inside the transmission device to make the pressure inside the transmission device higher than or equal to the external pressure, especially when the compensation pressure is higher than the external pressure, the oil in the transmission device can only leak to the external environment, and no external matters leak into the transmission device, and the technology can better protect the transmission device, but has a complicated structure and high requirements on a pressure data acquisition element and an active control execution element.
Therefore, the designer of the invention has the defects that the pressure compensation device which has simple structure, simple and convenient control, can automatically supplement oil and maintain pressure is researched and designed by combining the experiences and achievements of related industries for a long time through intensive research and design.
Disclosure of Invention
The invention aims to provide a pressure compensation device which is used for pressure relief detection of an underwater appliance and can automatically supplement and maintain pressure, the pressure compensation device is simple in structure, simple and convenient to control, stable in work, capable of effectively balancing the internal pressure and the external pressure of a transmission device, and capable of timely and automatically compensating after oil seepage or oil leakage of the compensated device is detected, so that damage of external liquid to the transmission device caused by the fact that the external liquid permeates the transmission device is avoided.
In order to solve the problems, the invention discloses a pressure compensation device for pressure relief detection of an underwater appliance and capable of automatically supplementing and maintaining pressure, which comprises a cylinder body, a piston, a sealing leather bag, a piston rod, a proximity unit sleeve, a proximity switch bracket, a tension spring and an oil storage cavity, and is characterized in that:
the upper end of the cylinder body is detachably fastened at the lower end of the proximity switch bracket, the proximity switch bracket is hollow, the middle part of the proximity switch bracket is provided with a proximity switch communicated into the proximity switch bracket, the piston is slidably arranged in the cylinder body, the piston rod is a hollow rod which is penetrated up and down, the lower end of the piston rod is connected with the piston in a sealing way, the upper end of the piston rod extends into the proximity switch bracket after penetrating through the cylinder body in a sealing way, the outer edge of the piston rod extending into the proximity switch bracket is provided with a proximity switch sleeve, the extension spring is arranged in a hollow cavity of the piston rod, one end of the extension spring is connected with the piston, the other end of the extension spring is connected with the tail end of the proximity switch bracket, the upper part of the cylinder body is provided with an oil inlet and outlet hole, the opening end of the upper end of the sealing leather bag is tightly connected with the cylinder body, the lower end of the sealing leather bag is tightly connected with the piston, and therefore the sealing leather bag, the piston, the cylinder body and the piston rod form an oil storage cavity which is a sealing cavity communicated with the oil inlet and outlet hole.
Wherein: the cylinder body consists of three cylinders which are tightly combined, the three cylinders are fastened into a whole through a plurality of screws at the periphery, and the three cylinders comprise an upper cylinder, a middle cylinder and a lower cylinder which are sequentially connected.
Wherein: the sealed leather bag comprises a first sealed leather bag and a second sealed leather bag, wherein the opening end of the first sealed leather bag is tightly pressed between the upper cylinder and the middle cylinder of the cylinder body, the lower end of the first sealed leather bag is tightly pressed and connected with the upper end of the piston, the opening end of the second sealed leather bag is tightly pressed between the middle cylinder and the lower cylinder of the cylinder body, and the lower end of the second sealed leather bag is tightly pressed and connected with the lower end of the piston.
Wherein: a guide frame is arranged between the cylinder body and the piston rod, the piston rod is guided in the guide frame through a guide ring, and the piston rod passes through the guide frame and then enters a cavity of the proximity switch bracket.
Wherein: at least one sealing ring is arranged between the piston rod and the guide frame.
Wherein: the oil storage device further comprises an exhaust hole, wherein the exhaust hole is arranged on the proximity switch bracket and penetrates through the guide frame to be communicated into the oil storage cavity.
According to the structure, the pressure compensation device for pressure relief detection of the underwater appliance, which is disclosed by the invention, can automatically supplement oil and maintain pressure, and has the following effects:
1. install two sealed leather bags, be located the piston both ends respectively, one end forms inclosed oil storage tank with the cylinder body, prevents that fluid from revealing, and the whole piston structure of other end seal prevents that the foreign matter from permeating to fluid in, pollutes fluid, has better sealed effect.
2. The guide frame is arranged, so that when external pressure changes, the piston rod is guided to linearly reciprocate along the axis, abrasion of eccentric motion of the piston to the sealing leather bag is avoided, meanwhile, relative displacement of the proximity switch proximity unit and the sensing part is guaranteed, and normal operation of the sensor is guaranteed.
3. The piston rod is of a hollow circular tube structure, an extension spring is arranged in the piston rod, the piston rod has a guiding function on the spring, and the spring can ensure that the oil pressure in the compensation system is always greater than the pressure of the external environment; the piston rod is arranged on the oil storage side, so that the area of the oil pressure acting on the piston is smaller than the area of the water pressure acting on the piston, and the oil pressure is always larger than the external water pressure. Therefore, the oil in the transmission device can only leak to the outside, and the leakage of foreign matters into the transmission device can not occur, so that the damage of the transmission device caused by the penetration of external liquid into the transmission device is avoided.
4. The sensor proximity switch is independently arranged in a closed cavity, so that the work of the sensor is prevented from being interfered by other factors. The function of automatic oil supplementing is realized when the pressure compensation device leaks through the control of the proximity switch sensor. By monitoring the open and closed state of the proximity switch, it is possible to detect whether the device is leaking oil.
5. The cylinder body is formed by compressing three cylinders by using screws, so that maintenance, cleaning and seal replacement are facilitated.
6. After the mechanical oil seal of the transmission device is damaged, the proximity switch is normally closed, and the pump station directly protects the transmission device from constant pressure, so that the transmission device is prevented from being damaged.
Therefore, the device can realize that the internal pressure of the compensated device is always higher than the external pressure in a simple structural form, ensure the normal operation of the transmission device under the pressure change environment, and simultaneously detect whether the transmission device leaks or not, automatically compensate oil liquid when the transmission device leaks, ensure the normal operation of the pressure compensation device and avoid the damage of the transmission device.
The details of the present invention can be found in the following description and the accompanying drawings.
Drawings
Fig. 1 shows a schematic structural diagram of a pressure compensation device capable of automatically supplementing and maintaining pressure for pressure relief detection of an underwater appliance.
FIG. 2 shows a top view of FIG. 1;
FIG. 3 shows a cross-sectional view taken along the direction A-A in FIG. 2;
fig. 4 shows a cross-sectional view of the internal structure of the present invention when the oil is replenished (the proximity switch is closed).
Reference numerals:
1 is a cylinder body, 2 is a piston, 3 is a sealing leather bag, 4 is a piston rod, 5 is a guide frame, 6 is a guide ring, 7 is a sealing ring, 8 is a screw rod, 9 is a proximity unit sleeve, 10 is a proximity switch, 11 is a proximity switch bracket, 12 is a tension spring, 13 is an oil inlet and outlet hole, 14 is an oil storage cavity, and 15 is an exhaust hole.
Detailed Description
Referring to fig. 1 to 4, a pressure compensation device for pressure relief detection and automatic oil and pressure compensation of an underwater appliance is shown.
The pressure compensation device comprises a cylinder body 1, a piston 2, a sealing leather bag 3, a piston rod 4, a proximity unit sleeve 9, a proximity switch 10, a proximity switch bracket 11, a tension spring 12 and an oil storage cavity 14, wherein the interior of the cylinder body 1 is hollow, the upper end of the tension spring is detachably fastened at the lower end of the proximity switch bracket 11, the proximity switch bracket 11 is hollow, the middle part of the tension spring is provided with the proximity switch 10 communicated to the interior of the proximity switch bracket 11, the piston 2 is slidably arranged in the cylinder body 1, the piston rod 4 is a hollow rod which penetrates up and down, the lower end of the hollow rod is in sealing connection with the piston 2, the upper end of the piston rod 4 extends into the proximity switch bracket 11 after penetrating through the cylinder body 1, the outer edge of the piston rod 4 extends into the proximity switch bracket 11, the tension spring 12 is arranged in the hollow cavity of the piston rod 4, one end of the tension spring is connected with the piston 2, the other end of the tension spring is connected with the tail end of the proximity switch bracket 11, the outer edge of the upper part of the cylinder body 1 is provided with an oil inlet and outlet 13, the opening end of the upper end of the sealing leather bag 3 is tightly connected to the piston 2, the piston rod 1 is in the position of the piston 14, and the oil storage cavity 14 is tightly connected to the piston 1, and the oil inlet and outlet 14 is tightly connected to the piston 1.
The cylinder body 1 may be composed of three cylinders tightly combined, the three cylinders are fastened together by a plurality of screws 8 at the periphery, the three cylinders comprise an upper cylinder, a middle cylinder and a lower cylinder which are sequentially connected, the lower end of the proximity switch bracket 11 is provided with a connecting flange, the connecting flange is fastened to the cylinder body 1 by the plurality of screws 8, preferably, the sealing leather bag 3 comprises a first sealing leather bag and a second sealing leather bag, the open end of the first sealing leather bag is tightly pressed between the upper cylinder and the middle cylinder of the cylinder body 1, the lower end of the first sealing leather bag is tightly pressed and connected with the upper end of the piston 2, the open end of the second sealing leather bag is tightly pressed between the middle cylinder and the lower cylinder of the cylinder body 1, and the lower end of the second sealing leather bag is tightly pressed and connected with the lower end of the piston 2, so that tight sealing is formed.
The upper portion of the cylinder body 1 is provided with a through hole for the piston rod 4 to penetrate, a guide frame 5 is arranged between the cylinder body 1 and the piston rod 4, the piston rod 4 is guided in the guide frame 5 through a guide ring 6, the piston rod 4 penetrates through the guide frame 5 and then enters a cavity of the proximity switch bracket 11, at least one sealing ring 7 is arranged between the piston rod 4 and the guide frame 5 for sealing, and the sealing ring 7 can be a Y-shaped sealing ring positioned in a groove in the inner wall of the guide frame 5.
The oil inlet and outlet 13 is connected with an oil tank of external equipment, the oil inlet and outlet 13 can comprise an oil inlet and an oil outlet, the opening and closing of the oil inlet is controlled by a signal of the proximity switch 10, and the oil outlet is connected with a compensated transmission device.
The device also comprises an exhaust hole 15, wherein the exhaust hole 15 is arranged on the flange surface of the proximity switch bracket 11 and penetrates through the guide frame 5 to be communicated with the oil storage cavity 14.
Therefore, the proximity switch is arranged at the middle section of the proximity switch bracket, a complete sensor unit is formed by the proximity switch and the proximity unit sleeve, and the lower end of the cylinder body 1 is opened and communicated with the outside.
The working process of the device of the invention is as follows:
in the equipment debugging stage, compensation oil is injected into the oil storage cavity 14 through the oil inlet hole, air in the oil storage cavity is discharged through the exhaust hole 15, the oil inlet is closed after the piston 2 reaches the bottom of the cylinder body and contacts with the end face of the cylinder body to be mechanically limited, and the compensation device enters a normal working state as shown in fig. 1.
In the state shown in fig. 1, the proximity switch 10 is in a normally open state, the oil inlet is in a normally closed state, and the compensating device and the compensated transmission equipment form a closed space filled with compensating oil. When the equipment enters underwater operation, as the sinking depth becomes larger, external water pressure becomes larger gradually, the pressure directly acts on the piston 2 through the open end at the lower part of the cylinder body 1, the piston 2 moves upwards to compress compensation oil, the compensation oil pressure increases, after the pressure balance is achieved, the piston stops moving, and the external pressure is transmitted to a compensated transmission device through the compensation oil to realize the balance of internal and external pressure; when the equipment rises, the external pressure is reduced, the internal pressure is larger than the external pressure, the compensation oil pushes the piston to move downwards, the volume of the compensation oil is increased, the pressure is reduced, and after the pressure balance is achieved, the piston stops moving, so that the balance of the internal pressure and the external pressure is realized.
When the compensation device or the transmission device leaks or leaks, the volume of the compensation oil is reduced, the piston 2 moves upwards to drive the piston rod 4 and the proximity unit sleeve 9 to move upwards, when the leakage is excessive, the proximity switch sleeve 9 moves upwards to cover the induction part of the proximity switch 10, the proximity switch 10 is changed into a closed state from a normally open state, the oil inlet is opened, the oil tank supplements the compensation device with oil, the piston 2 is pushed to move downwards to drive the piston rod 4 and the proximity unit sleeve 9 to move downwards, the proximity unit sleeve 9 is far away from the proximity switch 10, and when the proximity unit sleeve 9 is completely separated from the induction part of the proximity switch 10, the proximity switch 10 is converted into an open state from the closed state, and the oil inlet is closed, so that the automatic oil supplementation of the compensation device is realized. In the construction process of the equipment, an operator can judge whether the oil leakage phenomenon occurs in the equipment transmission device through the opening and closing state of the proximity switch 10, and when the proximity switch is always in the closed state, the oil leakage accident of the equipment can be found.
When the pressure compensation device works normally, the proximity switch is in an open state, the oil inlet is in a closed state, the compensation system is in a closed-loop state, and when external pressure changes, the piston drives the piston rod and the proximity unit sleeve to reciprocate linearly along the axial direction of the piston rod to realize pressure compensation of the transmission device.
When oil seepage or oil leakage occurs in the compensation device or the transmission device, the piston drives the proximity unit sleeve on the piston rod to shield the induction part of the proximity switch, the proximity switch is closed, the oil inlet is opened, the oil tank supplements oil for the compensation device, along with the supplement of oil in the oil tank of the compensation device, the piston is pushed to drive the proximity switch sleeve to be far away from the induction part of the proximity switch, and when the sleeve is not shielding the induction part, the proximity switch is disconnected, the oil inlet is closed, so that the automatic oil supplementing function of the pressure compensation device is realized.
An operator can judge whether the compensating device and the transmission device leak oil or not by monitoring the opening and closing states of the proximity switch, and when the proximity switch is changed from a normally open state to a normally closed state, the operator can infer that the compensating device or the transmission device leaks oil for some reason, the leakage cannot realize the oil pressure balance of the system through an automatic oil supplementing function, and the device needs to be checked immediately, so that accidents are avoided.
It follows that the advantages of the invention are:
1. install two sealed leather bags, be located the piston both ends respectively, one end forms inclosed oil storage tank with the cylinder body, prevents that fluid from revealing, and the whole piston structure of other end seal prevents that the foreign matter from permeating to fluid in, pollutes fluid, has better sealed effect.
2. The guide frame is arranged, so that when external pressure changes, the piston rod is guided to linearly reciprocate along the axis, abrasion of eccentric motion of the piston to the sealing leather bag is avoided, meanwhile, relative displacement of the proximity switch proximity unit and the sensing part is guaranteed, and normal operation of the sensor is guaranteed.
3. The piston rod is of a hollow circular tube structure, the extension spring is arranged in the piston rod, the piston rod has a guiding function on the spring, the spring can ensure that the oil pressure in the compensation system is always larger than the pressure of the external environment, the oil in the transmission device can only leak to the external environment, the transmission device can not leak foreign matters, and the transmission device is prevented from being damaged by external liquid infiltration.
4. The sensor proximity switch is independently arranged in a closed cavity, so that the work of the sensor is prevented from being interfered by other factors. The function of automatic oil supplementing is realized when the pressure compensation device leaks through the control of the proximity switch sensor. By monitoring the open and closed state of the proximity switch, it is possible to detect whether the device is leaking oil.
5. The cylinder body is formed by compressing three cylinders by using screws, so that the maintenance, the cleaning and the replacement of the sealing leather bag are facilitated.
It is to be clearly understood that the above description and illustration is made only by way of example and not as a limitation on the disclosure, application or use of the invention. Although embodiments have been described in the embodiments and illustrated in the accompanying drawings, the invention is not limited to the specific examples illustrated by the drawings and described in the embodiments as the best mode presently contemplated for carrying out the teachings of the invention, and the scope of the invention will include any embodiments falling within the foregoing specification and the appended claims.
Claims (2)
1. The utility model provides a pressure compensation arrangement of apparatus pressure release detection and automatic oil filling pressurize under water, includes cylinder body, piston, sealed leather bag, piston rod, approach unit sleeve, proximity switch support, extension spring and oil storage chamber, its characterized in that:
the upper end of the cylinder body is detachably fastened at the lower end of the proximity switch bracket, the proximity switch bracket is hollow, the middle part of the proximity switch bracket is provided with a proximity switch communicated into the proximity switch bracket, the piston is slidably arranged in the cylinder body, the piston rod is a hollow rod which penetrates up and down, the lower end of the piston rod is connected with the piston in a sealing manner, the upper end of the piston rod penetrates through the cylinder body in a sealing manner and then stretches into the proximity switch bracket, the outer edge of the piston rod stretching into the proximity switch bracket is provided with a proximity switch sleeve, the extension spring is arranged in a hollow cavity of the piston rod, one end of the extension spring is connected with the piston, the other end of the extension spring is connected with the tail end of the proximity switch bracket, the upper part of the cylinder body is provided with an oil inlet and outlet hole, the opening end of the upper end of the sealing leather bag is tightly connected with the cylinder body, and the lower end of the piston is tightly connected with the piston, so that the sealing leather bag, the piston and the cylinder body form an oil storage cavity, and the oil storage cavity is a sealing cavity communicated with the oil inlet and outlet hole;
the cylinder body consists of three cylinders which are tightly combined, the three cylinders are fastened into a whole through a plurality of screws at the periphery, and the three cylinders comprise an upper cylinder, a middle cylinder and a lower cylinder which are sequentially connected;
the sealing leather bags comprise a first sealing leather bag and a second sealing leather bag, the opening end of the first sealing leather bag is tightly pressed between the upper cylinder and the middle cylinder of the cylinder body, the lower end of the first sealing leather bag is tightly pressed and connected with the upper end of the piston, the opening end of the second sealing leather bag is tightly pressed and connected between the middle cylinder and the lower cylinder of the cylinder body, and the lower end of the second sealing leather bag is tightly pressed and connected with the lower end of the piston;
a guide frame is arranged between the cylinder body and the piston rod, the piston rod is guided in the guide frame through a guide ring, and the piston rod passes through the guide frame and then enters a cavity of the proximity switch bracket;
the pressure compensation device for pressure relief detection of the underwater appliance and capable of automatically supplementing and maintaining the pressure further comprises an exhaust hole, wherein the exhaust hole is arranged on the proximity switch bracket and penetrates through the guide frame to be communicated into the oil storage cavity.
2. The pressure compensation device for pressure relief detection of an underwater tool and capable of automatically supplementing and maintaining pressure as claimed in claim 1, wherein: at least one sealing ring is arranged between the piston rod and the guide frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810029132.5A CN108131355B (en) | 2018-01-12 | 2018-01-12 | Pressure compensation device for pressure relief detection of underwater appliance and capable of automatically supplementing oil and maintaining pressure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810029132.5A CN108131355B (en) | 2018-01-12 | 2018-01-12 | Pressure compensation device for pressure relief detection of underwater appliance and capable of automatically supplementing oil and maintaining pressure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108131355A CN108131355A (en) | 2018-06-08 |
| CN108131355B true CN108131355B (en) | 2024-03-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810029132.5A Active CN108131355B (en) | 2018-01-12 | 2018-01-12 | Pressure compensation device for pressure relief detection of underwater appliance and capable of automatically supplementing oil and maintaining pressure |
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| Country | Link |
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| CN (1) | CN108131355B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022252106A1 (en) * | 2021-06-01 | 2022-12-08 | 中国矿业大学(北京) | Pseudo-triaxial pressure-maintaining loading device and method for performing pseudo-triaxial pressure-maintaining loading experiment using same |
| CN114542688A (en) * | 2022-01-26 | 2022-05-27 | 徐州徐工基础工程机械有限公司 | Pressure maintaining compensation control system of transmission device |
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| CN102562706A (en) * | 2012-02-23 | 2012-07-11 | 无锡亿利大机械有限公司 | Integrated servo cylinder |
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| CN105715608A (en) * | 2014-11-30 | 2016-06-29 | 中国科学院沈阳自动化研究所 | Underwater hydraulic linear cylinder mechanism with position feedback function |
| CN207848094U (en) * | 2018-01-12 | 2018-09-11 | 中铁工程机械研究设计院有限公司 | The pressure compensator of underwater apparatus pressure release detection and the automatic repairing pressurize of energy |
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- 2018-01-12 CN CN201810029132.5A patent/CN108131355B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562706A (en) * | 2012-02-23 | 2012-07-11 | 无锡亿利大机械有限公司 | Integrated servo cylinder |
| CN203322452U (en) * | 2013-05-24 | 2013-12-04 | 重庆前卫海洋石油工程设备有限责任公司 | Actuator for underwater valve |
| KR20160020775A (en) * | 2014-08-14 | 2016-02-24 | 국방과학연구소 | Hydraulic Drive System Applied Blather type Volume Compensator and Performance Tester for Blather type Volume Compensator |
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| CN108131355A (en) | 2018-06-08 |
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