CN109538573B - Hydraulic cylinder system with heat dissipation function based on aqueous medium - Google Patents
Hydraulic cylinder system with heat dissipation function based on aqueous medium Download PDFInfo
- Publication number
- CN109538573B CN109538573B CN201811612804.1A CN201811612804A CN109538573B CN 109538573 B CN109538573 B CN 109538573B CN 201811612804 A CN201811612804 A CN 201811612804A CN 109538573 B CN109538573 B CN 109538573B
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- heat dissipation
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1428—Cylinders
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
- F15B15/1433—End caps
-
- 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
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
- Fluid-Pressure Circuits (AREA)
Abstract
The hydraulic cylinder system with the heat dissipation function based on the water medium comprises a cylinder body and a push-pull rod penetrating into the cylinder body, wherein a cylinder cover is arranged at the left end of the cylinder body, a cylinder bottom is arranged at the right end of the cylinder body, the right end of the push-pull rod is connected with a push-pull plate, the outer side wall of the push-pull plate is in sliding fit with the inner side wall of the cylinder body, an annular telescopic elastomer is connected between the push-pull plate and the cylinder bottom in a sealing manner, a high-pressure water supply system is connected to a liquid through hole K, a low-pressure water supply system is connected to a liquid through hole S1, and a heat dissipation system is connected to a liquid through hole S3 and a liquid through hole S4. The beneficial effects of the invention are as follows: 1. water is used as a medium, so that pollution cost is reduced; 2. the device is suitable for working occasions under high-temperature environments; 3. the tap water is connected to realize water heat dissipation, so that the components are fewer, and the purposes of environmental protection and energy saving are achieved.
Description
Technical Field
The invention relates to a hydraulic cylinder system with a heat dissipation function based on an aqueous medium.
Background
At present, the hydraulic cylinder is an industrial power element which is widely applied in the world, and is used as a key part of a power executing mechanism, plays a very large role in a hydraulic system, is as small as the microelectronics field and is as large as a ten thousand ton press, and has application in various fields such as land, ocean and the like. Since hydraulic oil is applied to the hydraulic field in the beginning of the last century in the United states, the working medium of a hydraulic cylinder is always mineral hydraulic oil, and the hydraulic oil has good lubrication and left and right effects on reducing abrasion of the reciprocating hydraulic cylinder. The characteristics of the current hydraulic cylinder are integrated, and the problems are as follows:
1) By adopting hydraulic oil as a medium, the hydraulic oil has certain pollution, especially after leakage, soil and water sources can be polluted, and residual pollution is caused for decades or even hundreds of years. Each cylinder is a source of pollution risk.
2) For a high-pressure hydraulic cylinder, the sealing ring is a key element for sealing the real high pressure of the cavity. Dynamic friction generated by expansion and contraction of the hydraulic rod often damages a sealing ring, so that oil leakage occurs, and the hydraulic cylinder pressure is reduced and the hydraulic cylinder cannot work. The high hydraulic pressure also needs to set up more sealing washer and ensures that hydraulic oil is sealed in the wall body, in case certain sealing washer damages, just needs to change, and the life-span of sealing washer in addition causes the maintenance cycle to be short, and it is more troublesome to maintain.
3) The machining precision of each part of the hydraulic cylinder is high, the requirements on the outer diameter of a shaft, the inner diameter of a hole and a groove for installing a sealing ring are high, even grinding machine machining, chromium plating and the like are needed, the inner wall of a cylinder barrel is required to be machined by a deep boring machine, the coaxiality requirements are high, a high-precision machining machine tool and a machine tool operator with certain operation capability are required to meet the high requirements, the machining cost is increased, according to statistics, the machining cost only accounts for more than 60% of the cost of the hydraulic cylinder, and the machining difficulty is higher and the cost is higher for the hydraulic cylinder with larger diameter.
4) The hydraulic cylinder is widely applied to the land, but is rarely applied to the underwater application, particularly in a deep water area, and mainly the problem between the pressure generated by external water pressure and the oil sealing pressure in the hydraulic cylinder is solved, so that the hydraulic cylinder is limited in the sea oil development field such as a deep sea drilling platform, a deep water submersible and the like, and even if the hydraulic cylinder is applied, a pressure compensator related to the water depth is required to be added, the function and the benefit of the hydraulic cylinder are greatly reduced, but the cost is greatly increased.
5) For a hydraulic cylinder with a large diameter, the assembled hydraulic cylinder has heavy weight due to a large number of parts, so that the hydraulic cylinder is inconvenient to use, hoist, mount and maintain;
6) Some hydraulic cylinders use emulsion as a medium, and the medium is also formed by mixing water and oil, so that the hydraulic cylinders are easy to oxidize and deteriorate in use, have short service cycle and high price, and are limited in use conditions and range.
7) All hydraulic cylinders often cause oil omission and pollute the environment in the process of disassembling parts in maintenance.
Disclosure of Invention
In order to solve the technical defects, the invention provides the hydraulic cylinder system with the heat dissipation function, which is low in cost, small in pollution, energy-saving and environment-friendly and is based on the water medium.
The invention is realized by the following measures:
the hydraulic cylinder system with the heat dissipation function based on the water medium comprises a cylinder body and a push-pull rod penetrating into the cylinder body, wherein the left end of the cylinder body is provided with a cylinder cover, the right end of the cylinder body is provided with a cylinder bottom, the right end of the push-pull rod is connected with a push-pull plate, the outer side wall of the push-pull plate is in sliding fit with the inner side wall of the cylinder body, an annular telescopic elastomer is connected between the push-pull plate and the cylinder bottom in a sealing manner, the push-pull plate, the cylinder bottom and the telescopic elastomer enclose a sealed hydraulic cavity Q2, the cylinder bottom is provided with a liquid port K communicated with the hydraulic cavity Q2, the diameter of the push-pull rod is smaller than that of the push-pull plate, the left end of the push-pull rod is in a sealing manner and penetrates out of the cylinder cover, the push-pull rod, the cylinder cover, the cylinder body and the push-pull plate enclose a hydraulic cavity Q1, and the cylinder cover is provided with a liquid port S1 communicated with the hydraulic cavity Q1; the middle part of the side wall of the cylinder barrel body is provided with a liquid passing port S3 communicated with a hydraulic cavity Q1, the side wall of the cylinder barrel body positioned on the right side of the right end of the telescopic elastic body is provided with a liquid passing port S4, the edge of the push-pull plate is provided with a notch G1, the edge of the cylinder bottom is provided with a notch G2, the liquid passing port S3, the notch G1, the notch G2 and the liquid passing port S4 are communicated with each other and form a water cooling channel positioned between the outer side wall of the telescopic elastic body and the inner side wall of the cylinder barrel body, the liquid passing port K is connected with a high-pressure water supply system, the liquid passing port S1 is connected with a low-pressure water supply system, and the liquid passing port S3 and the liquid passing port S4 are connected with a heat dissipation system.
Above-mentioned high-pressure water supply system includes high-pressure water pump, high-pressure water pump's water inlet is connected with the inlet tube, and high-pressure water pump's delivery port is connected with the outlet pipe, the outlet pipe is connected with logical liquid mouth K, be provided with switching-over valve I on the outlet pipe, be connected with the drain pipe on the outlet pipe between switching-over valve I and the logical liquid mouth K, be provided with switching-over valve II on the drain pipe, inlet tube and drain pipe external have the water tank, be provided with the filter on the inlet tube.
Above-mentioned low pressure water supply system includes the low pressure water pump, the water inlet of low pressure water pump is connected with the inlet tube, and the delivery port of low pressure water pump is connected with the outlet pipe, the outlet pipe is connected with logical liquid mouth S1, be connected with the overflow pipe on the outlet pipe, be provided with the overflow valve on the overflow pipe, inlet tube and overflow pipe are external to have the water tank, be provided with the filter on the inlet tube.
The heat dissipation system comprises a radiator, one water inlet of the radiator is respectively communicated with the liquid inlet S3 and the liquid inlet S4 through water pipes, the other water inlet of the radiator is connected with a drain pipe, a switch valve is arranged on the drain pipe, and the drain pipe is externally connected with a water tank.
The cylinder cover is provided with a liquid port S2 communicated with the hydraulic cavity Q1, and the liquid port S2 is externally connected with a temperature pressure gauge.
The edge of the push-pull plate is uniformly provided with a plurality of arc-shaped gaps G1, and the edge of the cylinder bottom is provided with a circular gap G2.
The beneficial effects of the invention are as follows: 1. water is used as a medium, so that pollution cost is reduced; 2. the device is suitable for working occasions under high-temperature environments; 3. the tap water is connected to realize water heat dissipation, so that the components are fewer, and the purposes of environmental protection and energy saving are achieved.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Fig. 2 is a schematic structural view of a hydraulic cylinder portion in the present invention.
FIG. 3 is a schematic view of the cross-sectional structure of the A-A direction in FIG. 2.
FIG. 4 is a schematic view showing the structure of the B-B cross section in FIG. 2
Wherein: 1-water tank, 2-switch valve, 3-high pressure water pump, 4-filter, 5-overflow valve, 6-low pressure water pump, 7-temperature pressure gauge, 8-radiator, 9-reversing valve II, 10-reversing valve I, 100-hydraulic cylinder,
101-push-pull rod, 102 cylinder body, 103 push-pull plate, 104 telescopic elastomer, 105 bolt I, 106 cylinder bottom, 107 bolt II, 108 bolt III, 109 cylinder cap.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings:
as shown in fig. 1 and 2, the hydraulic cylinder 100 system with the heat dissipation function based on the water medium comprises a cylinder body 102 and a push-pull rod 101 penetrating into the cylinder body 102, wherein the left end of the cylinder body 102 is provided with a cylinder cover 109, the right end of the cylinder body 102 is provided with a cylinder bottom 106, the right end of the push-pull rod 101 is connected with a push-pull plate 103, the outer side wall of the push-pull plate 103 is in sliding fit with the inner side wall of the cylinder body 102, an annular telescopic elastomer 104 is connected between the push-pull plate 103 and the cylinder bottom 106 in a sealing manner, the push-pull plate 103, the cylinder bottom 106 and the telescopic elastomer 104 enclose a sealed hydraulic cavity Q2, the diameter of a liquid through hole K push-pull rod 101 communicated with the hydraulic cavity Q2 is smaller than the diameter of the push-pull plate 103, the left end of the push-pull rod 101 is sealed and movably penetrates out of the cylinder cover 109, the push-pull rod 101, the cylinder cover 109, the cylinder body 102 and the push-pull plate 103 enclose a hydraulic cavity Q1, and a liquid through hole S1 communicated with the hydraulic cavity Q1 are formed in the cylinder cover 109; the middle part of the side wall of the cylinder body 102 is provided with a liquid through port S3 communicated with a hydraulic cavity Q1, the side wall of the cylinder body 102 positioned on the right side of the right end of the telescopic elastic body 104 is provided with a liquid through port S4, the edge of the push-pull plate 103 is provided with a notch G1, the edge of the cylinder bottom 106 is provided with a notch G2, the liquid through port S3, the notch G1, the notch G2 and the liquid through port S4 are mutually communicated and form a water cooling channel positioned between the outer side wall of the telescopic elastic body 104 and the inner side wall of the cylinder body 102, the liquid through port K is connected with a high-pressure water supply system, the liquid through port S1 is connected with a low-pressure water supply system, and the liquid through port S3 and the liquid through port S4 are connected with a heat dissipation system. The cylinder bottom 106, the push-pull plate 103 and the cylinder cover 109 are respectively connected and fixed through a bolt I105, a bolt II 107 and a bolt III 108.
The high-pressure water supply system comprises a high-pressure water pump 3, a water inlet of the high-pressure water pump 3 is connected with a water inlet pipe, a water outlet of the high-pressure water pump 3 is connected with a water outlet pipe, the water outlet pipe is connected with a liquid through port K, a reversing valve I10 is arranged on the water outlet pipe, a water outlet pipe between the reversing valve I10 and the liquid through port K is connected with a water outlet pipe, a reversing valve II 9 is arranged on the water outlet pipe, the water inlet pipe and the water outlet pipe are externally connected with a water tank 1, and a filter 4 is arranged on the water inlet pipe. The low-pressure water supply system comprises a low-pressure water pump 6, a water inlet of the low-pressure water pump 6 is connected with a water inlet pipe, a water outlet of the low-pressure water pump 6 is connected with a water outlet pipe, the water outlet pipe is connected with a liquid through port S1, an overflow pipe is connected onto the water outlet pipe, an overflow valve 5 is arranged on the overflow pipe, a water tank 1 is externally connected onto the water inlet pipe and the overflow pipe, and a filter 4 is arranged on the water inlet pipe. The heat dissipation system comprises a radiator 8, one water through interface of the radiator 8 is respectively communicated with a liquid through port S3 and a liquid through port S4 through water pipes, the other water through interface of the radiator 8 is connected with a drain pipe, a switch valve 2 is arranged on the drain pipe, and the drain pipe is externally connected with a water tank 1. The cylinder cover 109 is provided with a liquid through hole S2 communicated with the hydraulic cavity Q1, and the liquid through hole S2 is externally connected with a temperature pressure gauge 7. As shown in fig. 3 and 4, a plurality of arc-shaped notches G1 are uniformly arranged on the edge of the push-pull plate 103, and a circular notch G2 is arranged on the edge of the cylinder bottom 106.
The working principle is as follows:
hydraulic circuit for telescopic operation of hydraulic cylinder 100: the high-pressure water pump 3 pumps water from the filter 4 into a pipeline, when the pressure exceeds the design pressure, the overflow valve 5 discharges the water in a pressure relief way, the reversing valve I10 is in a on position, and when the reversing valve II 9 is in an off position, the high-pressure water enters a hydraulic cavity Q2 reaching the hydraulic cylinder 100 through the liquid through hole K, and the hydraulic cavity Q2 expands in volume, so that the hydraulic cylinder 100 is pushed to extend; when the reversing valve II 9 is in the on position and the reversing valve I10 is in the off position, water in the hydraulic cavity Q2 of the hydraulic cylinder 100 is discharged, the switching valve 2 is opened to drain water to the water tank 1, the volume of the hydraulic cavity Q2 is reduced, and the hydraulic cylinder 100 is retracted.
Hydraulic cylinder 100 heat dissipation circuit: the low-pressure water pump 6 drives water from the filter 4 into a pipeline, when the pressure exceeds the design pressure, the water is discharged through pressure relief of the overflow valve 5, the low-pressure water enters the front hydraulic cavity Q1 of the hydraulic cylinder 100 through the liquid through hole S1, a part of the low-pressure water flows into the radiator 8 through the liquid through hole S3, a part of the low-pressure water flows into the radiator 8 through the gap G1 and the gap G2 to reach the liquid through hole S4, the low-pressure water directly flows back to the water tank 1 after passing through the radiator 8, and the switch valve 2 is opened to realize circulation. The liquid through hole S3 is provided with a temperature pressure gauge 7 for monitoring the temperature and the water pressure of the heat radiation system.
The foregoing is merely a preferred embodiment of the present patent, and it should be noted that modifications and substitutions will now occur to those skilled in the art without departing from the technical principles of the present patent, and such modifications and substitutions should also be considered to be within the scope of the present patent.
Claims (4)
1. The utility model provides a hydraulic cylinder system based on aqueous medium has heat dissipation function, includes cylinder body and penetrates the push-and-pull rod in the cylinder body, its characterized in that: the left end of the cylinder barrel body is provided with a cylinder cover, the right end of the cylinder barrel body is provided with a cylinder bottom, the right end of the push-pull rod is connected with a push-pull plate, the outer side wall of the push-pull plate is in sliding fit with the inner side wall of the cylinder barrel body, an annular telescopic elastomer is connected between the push-pull plate and the cylinder bottom in a sealing manner, the push-pull plate, the cylinder bottom and the telescopic elastomer enclose a sealed hydraulic cavity Q2, the cylinder bottom is provided with a liquid through hole K communicated with the hydraulic cavity Q2, the diameter of the push-pull rod is smaller than that of the push-pull plate, the left end of the push-pull rod is hermetically and movably penetrated out of the cylinder cover, the push-pull rod, the cylinder cover, the cylinder barrel body and the push-pull plate enclose a hydraulic cavity Q1, and the cylinder cover is provided with a liquid through hole S1 communicated with the hydraulic cavity Q1; the middle part of the side wall of the cylinder barrel body is provided with a liquid passing port S3 communicated with a hydraulic cavity Q1, the side wall of the cylinder barrel body positioned on the right side of the right end of the telescopic elastic body is provided with a liquid passing port S4, the edge of the push-pull plate is provided with a notch G1, the edge of the cylinder bottom is provided with a notch G2, the liquid passing port S3, the notch G1, the notch G2 and the liquid passing port S4 are communicated with each other and form a water cooling channel positioned between the outer side wall of the telescopic elastic body and the inner side wall of the cylinder barrel body, the liquid passing port K is connected with a high-pressure water supply system, the liquid passing port S1 is connected with a low-pressure water supply system, and the liquid passing port S3 and the liquid passing port S4 are connected with a heat dissipation system; the high-pressure water supply system comprises a high-pressure water pump, a water inlet of the high-pressure water pump is connected with a water inlet pipe, a water outlet of the high-pressure water pump is connected with a water outlet pipe, the water outlet pipe is connected with a liquid through port K, a reversing valve I is arranged on the water outlet pipe, a water outlet pipe between the reversing valve I and the liquid through port K is connected with a water outlet pipe, a reversing valve II is arranged on the water outlet pipe, the water inlet pipe and the water outlet pipe are externally connected with a water tank, and a filter is arranged on the water inlet pipe; the low-pressure water supply system comprises a low-pressure water pump, a water inlet of the low-pressure water pump is connected with a water inlet pipe, a water outlet of the low-pressure water pump is connected with a water outlet pipe, the water outlet pipe is connected with a liquid through port S1, an overflow pipe is connected to the water outlet pipe, and an overflow pipe is provided with a water inlet pipe
And the overflow valve is externally connected with a water tank, and a filter is arranged on the water inlet pipe.
2. The hydraulic cylinder system with heat dissipation function based on aqueous medium of claim 1, wherein: the heat dissipation system comprises a radiator, one water inlet of the radiator is respectively communicated with a liquid inlet S3 and a liquid inlet S4 through water pipes, the other water inlet of the radiator is connected with a drain pipe, a switch valve is arranged on the drain pipe, and a water tank is externally connected to the drain pipe.
3. The hydraulic cylinder system with heat dissipation function based on aqueous medium of claim 1, wherein: the cylinder cover is provided with a liquid port S2 communicated with the hydraulic cavity Q1, and the liquid port S2 is externally connected with a temperature pressure gauge.
4. The hydraulic cylinder system with heat dissipation function based on aqueous medium of claim 1, wherein: the edge of the push-pull plate is uniformly provided with a plurality of arc-shaped gaps G1, and the edge of the cylinder bottom is provided with a circular gap G2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612804.1A CN109538573B (en) | 2018-12-27 | 2018-12-27 | Hydraulic cylinder system with heat dissipation function based on aqueous medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811612804.1A CN109538573B (en) | 2018-12-27 | 2018-12-27 | Hydraulic cylinder system with heat dissipation function based on aqueous medium |
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| Publication Number | Publication Date |
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| CN109538573A CN109538573A (en) | 2019-03-29 |
| CN109538573B true CN109538573B (en) | 2023-08-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811612804.1A Active CN109538573B (en) | 2018-12-27 | 2018-12-27 | Hydraulic cylinder system with heat dissipation function based on aqueous medium |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109915434A (en) * | 2019-01-17 | 2019-06-21 | 李军 | It is a kind of using oil-water media without sealing ring hydraulic cylinder |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110029426A (en) * | 2009-09-15 | 2011-03-23 | 한국생산기술연구원 | Device for continuously producing gas hydrate and method therefor |
| CN102297010A (en) * | 2011-07-21 | 2011-12-28 | 三一重型综采成套装备有限公司 | Expansion tank |
| CN205117885U (en) * | 2015-11-19 | 2016-03-30 | 重庆钢铁(集团)有限责任公司 | Rolling mill roller jar |
| CN106762956A (en) * | 2017-01-24 | 2017-05-31 | 常州液压成套设备厂有限公司 | Quick response airdraulic actuator |
| CN206377089U (en) * | 2016-12-26 | 2017-08-04 | 优利浦注塑科技（昆山）有限公司 | A kind of integrated cylinder system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107921685B (en) * | 2015-08-10 | 2020-07-07 | 圣万提注塑工业（苏州）有限公司 | Actuating device and method capable of achieving multiple piston speeds |
-
2018
- 2018-12-27 CN CN201811612804.1A patent/CN109538573B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110029426A (en) * | 2009-09-15 | 2011-03-23 | 한국생산기술연구원 | Device for continuously producing gas hydrate and method therefor |
| CN102297010A (en) * | 2011-07-21 | 2011-12-28 | 三一重型综采成套装备有限公司 | Expansion tank |
| CN205117885U (en) * | 2015-11-19 | 2016-03-30 | 重庆钢铁(集团)有限责任公司 | Rolling mill roller jar |
| CN206377089U (en) * | 2016-12-26 | 2017-08-04 | 优利浦注塑科技（昆山）有限公司 | A kind of integrated cylinder system |
| CN106762956A (en) * | 2017-01-24 | 2017-05-31 | 常州液压成套设备厂有限公司 | Quick response airdraulic actuator |
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| CN109538573A (en) | 2019-03-29 |
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