CN214499337U - Liquid piston device with porous medium - Google Patents
Liquid piston device with porous medium Download PDFInfo
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- CN214499337U CN214499337U CN202120304213.9U CN202120304213U CN214499337U CN 214499337 U CN214499337 U CN 214499337U CN 202120304213 U CN202120304213 U CN 202120304213U CN 214499337 U CN214499337 U CN 214499337U
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Abstract
The utility model discloses a liquid piston device with porous medium relates to liquid piston technical field, include: the device comprises a high-pressure gas pipeline, a low-pressure gas pipeline, a porous medium structure, a liquid piston cavity and a liquid pipeline; the upper end of the inner part of the liquid piston cavity is provided with a porous medium structure, the top of the liquid piston cavity is respectively provided with a high-pressure gas pipeline and a low-pressure gas pipeline, and the bottom of the liquid piston cavity is provided with a liquid pipeline; wherein, a liquid piston is arranged in the liquid pipeline.
Description
Technical Field
The utility model relates to a liquid piston technical field, concretely relates to liquid piston device with porous medium.
Background
Energy storage technology has been considered as an important component in the operation of a hydroprocessing station. However, the compressed gas energy storage has certain limitation, and the main disadvantage of the compressed gas energy storage is that the compressed gas is matched with a gas turbine, so that gas is consumed, environmental pollution is caused, leakage is easy, the energy density is low, and in the process of gas compression and expansion, the temperature change is severe, the damage to equipment is large, and the overhaul cost is high.
In recent years, the application of a liquid piston to compressed gas energy storage has been studied to solve the problem of environmental pollution caused by compressed gas energy storage, but in the design of compressors considered in the prior art, the cooling of the cylinder chamber can only be performed from the outside, and the heat generated during the compression process is released to the cooling medium (air, water, coolant, etc.) from the compressor or the outer wall of the cylinder. In view of this fact, the compression process cannot generally be carried out isothermally, which leads to a higher consumption of compression energy.
SUMMERY OF THE UTILITY MODEL
In view of this, to the problem that there is the liquid piston chamber temperature variation acutely, the energy storage utilization efficiency is low among the prior art in-process to compressed gas energy storage, the utility model provides a liquid piston device with porous medium can effectively improve heat transfer efficiency, makes the viscous flow power minimizing simultaneously to make liquid piston chamber have inside refrigerated ability in compression, show to improve by the heat transfer efficiency between compressed gas and the liquid piston.
The technical scheme of the utility model is that: a liquid piston device having a porous media, comprising: the device comprises a high-pressure gas pipeline, a low-pressure gas pipeline, a porous medium structure, a liquid piston cavity and a liquid pipeline;
the upper end of the inner part of the liquid piston cavity is provided with a porous medium structure, the top of the liquid piston cavity is respectively provided with a high-pressure gas pipeline and a low-pressure gas pipeline, and the bottom of the liquid piston cavity is provided with a liquid pipeline; wherein, a liquid piston is arranged in the liquid pipeline.
Preferably, the porous medium structure is a honeycomb cylindrical structure formed by uniformly distributing more than three elongated tubes.
Preferably, all of said elongate tubes are of uniform tube diameter, length and wall thickness.
Preferably, the liquid piston chamber is of cylindrical configuration.
Preferably, the porous medium structure is a honeycomb cylindrical structure.
Preferably, the porous medium structure adopts a heat conduction material.
Has the advantages that:
1. the liquid piston device of the utility model improves the traditional compressed gas temperature control technology, compresses gas by taking liquid as a medium, reduces the friction caused by leakage and mechanical sliding during gas compression, integrates the advantages of a liquid piston, also takes the temperature control function into account, improves the utilization efficiency of energy in compressed air, and has good energy-saving effect; the ratio of the surface area occupied by the gas in the liquid piston cavity to the volume in the liquid piston cavity is maximized through the porous medium structure, so that the heat transfer efficiency can be effectively improved, and the viscous flow force is minimized, so that the liquid piston device has the internal cooling capacity in the compression process, and the heat transfer efficiency between the compressed gas and the liquid piston is remarkably improved.
2. The utility model discloses well porous medium structure's concrete setting has solved the potential harm of the violent temperature variation that gas volume change brought to equipment, guarantees that working gas temperature is stable basically in compression process.
3. The utility model discloses in can realize installing on the spot, reduce compressed gas energy storage hardware requirement, do not need specific geographical condition, reduce the construction installation degree of difficulty, reduce construction installation cost.
Drawings
Fig. 1 is a schematic structural view of the liquid piston chamber and the liquid piston device of the present invention.
Fig. 2 is a schematic diagram of the structure of the medium porous medium of the present invention.
Wherein, 1-high pressure gas pipeline; 2-low pressure gas pipeline; 3-porous media structure; 4-a liquid piston chamber; 5-a liquid conduit; 6-external hydraulic equipment; 31-an elongated tube.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings by way of examples.
The present embodiments provide a liquid piston assembly with a porous media that is effective in improving heat transfer efficiency while minimizing viscous flow forces, thereby providing internal cooling of the liquid piston cavity during compression, significantly improving heat transfer efficiency between the compressed gas and the liquid piston.
As shown in fig. 1, the liquid piston apparatus with a porous medium includes: the device comprises a high-pressure gas pipeline 1, a low-pressure gas pipeline 2, a porous medium structure 3, a liquid piston cavity 4 and a liquid pipeline 5;
the connection relation of the liquid piston device with the porous medium is as follows: the porous medium structure 3 is arranged at the upper end in the liquid piston cavity 4 (the porous medium structure 3 is a porous structure with specific physical property, and the specific physical property is good thermal conductivity), and the ratio of the surface area occupied by the gas in the liquid piston cavity 4 to the inner volume of the liquid piston cavity can be remarkably increased, so that the capacity of rapid heat exchange between the liquid piston and the gas is enhanced; the top of the liquid piston cavity 4 is respectively communicated with an external gas storage device through a high-pressure gas pipeline 1 and a low-pressure gas pipeline 2; wherein, the low-pressure gas pipeline 2 is used for inputting the gas in the external gas storage device into the liquid piston cavity 4, and the high-pressure gas pipeline 1 is used for outputting the compressed gas to the external gas storage device;
the bottom of the liquid piston cavity 4 is provided with a liquid pipeline 5 and is connected with an external driving device (such as a hydraulic device 6), and the external driving device injects liquid into the liquid piston cavity 4 through the liquid pipeline 5 to form a liquid piston, so that gas in the liquid piston cavity 4 is compressed; wherein the gas is insoluble or sparingly soluble in the liquid used as the liquid piston;
in the embodiment, the porous medium structure 3 is made of a material with high heat conduction strength, such as metal, and when the porous medium structure works, the liquid piston freely passes through each pore in the porous medium structure 3, the contact area between the liquid piston and gas is increased by using the porous medium structure 3, the heat exchange speed between the liquid piston and the gas is increased, the approximately isothermal compression is realized in the liquid piston cavity 4, and the temperature change is limited within a certain range;
in this embodiment, as shown in fig. 2, the porous medium structure 3 is a honeycomb cylindrical structure formed by a plurality of slender tubes 31, the diameters of all the slender tubes 31 are consistent, the lengths are consistent, the wall thicknesses are consistent, and all the slender tubes 31 are uniformly distributed, so that the porous medium structure 3 has the effect of uniformly amplifying the heat transfer surface area;
wherein the upper part of the porous medium structure 3 participates in the whole process of the compression work, and the lower part only participates in the lower pressure and power when the compression starts and the expansion ends, so that the arrangement of the porous medium structure 3 in the middle upper part of the liquid piston cavity 4 is beneficial to improving the heat transfer at the most needed place (the heat effect is mainly concentrated in the place of gas compression, and the gas compression is mainly embodied in the middle upper part of the liquid piston cavity 4);
in this embodiment, the liquid piston chamber 4 is a cylindrical structure, and the porous medium structure 3 may be a honeycomb cylindrical structure corresponding thereto;
in this embodiment, the external driving device is a device including a hydraulic piston mechanism and a hydraulic motor, the devices are driven by the potential energy difference of the liquid, and the external driving device is used for converting the potential energy of the liquid and the energy of other forms.
The working principle of the liquid piston device with the porous medium is as follows: firstly, inputting low-pressure gas into an upper cavity inside a liquid piston cavity 4 by gas through a low-pressure gas pipeline 2, meanwhile, a lower cavity of the liquid piston cavity 4 is provided with a liquid piston, when the low-pressure gas is filled in a space except the liquid piston in the liquid piston cavity 4, pumping liquid into the liquid piston cavity 4 through a liquid pipeline 5, enabling the liquid piston to gradually compress the gas, and further enabling the inside of the device to reach the required pressure, meanwhile, in the compression process, the liquid piston provided by external driving equipment compresses the gas above the liquid level, and the heat generated by the compressed gas is transferred into a porous medium structure 3 from the compressed gas and is transferred into the liquid piston from the porous medium structure 3;
when the gas pressure rises to reach the exhaust designated pressure, the compressed high-pressure gas is discharged through the high-pressure gas pipeline 1, then the liquid is discharged through the liquid pipeline 5, the pressure in the liquid piston cavity 4 is reduced along with the continuous discharge of the liquid, and when the gas pressure is reduced to the intake designated pressure, the piston device repeats the operation to achieve the purpose of gas compression for many times.
In summary, the above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. A liquid piston device having a porous medium, comprising: the device comprises a high-pressure gas pipeline (1), a low-pressure gas pipeline (2), a porous medium structure (3), a liquid piston cavity (4) and a liquid pipeline (5);
the upper end in the liquid piston cavity (4) is provided with a porous medium structure (3), the top of the liquid piston cavity (4) is respectively provided with a high-pressure gas pipeline (1) and a low-pressure gas pipeline (2), and the bottom of the liquid piston cavity (4) is provided with a liquid pipeline (5); wherein, a liquid piston is arranged in the liquid pipeline (5).
2. Liquid piston device with porous medium according to claim 1, characterised in that the porous medium structure (3) is a honeycomb cylindrical structure formed by a uniform distribution of more than three elongated tubes (31).
3. Liquid piston device with porous medium according to claim 2, characterized in that all the elongated tubes (31) have a uniform tube diameter, length and wall thickness.
4. Liquid piston device with a porous medium according to claim 1, characterized in that the liquid piston chamber (4) is of cylindrical construction.
5. Liquid piston device with a porous medium according to claim 4, characterized in that the porous medium structure (3) is a honeycomb-like cylindrical structure.
6. Liquid piston device with a porous medium according to claim 1, characterized in that the porous medium structure (3) is of a heat conducting material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120304213.9U CN214499337U (en) | 2021-02-03 | 2021-02-03 | Liquid piston device with porous medium |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120304213.9U CN214499337U (en) | 2021-02-03 | 2021-02-03 | Liquid piston device with porous medium |
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| CN214499337U true CN214499337U (en) | 2021-10-26 |
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| CN202120304213.9U Active CN214499337U (en) | 2021-02-03 | 2021-02-03 | Liquid piston device with porous medium |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2772010C1 (en) * | 2021-11-17 | 2022-05-16 | Владимир Леонидович Юша | Compressor with liquid pistons |
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2021
- 2021-02-03 CN CN202120304213.9U patent/CN214499337U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2772010C1 (en) * | 2021-11-17 | 2022-05-16 | Владимир Леонидович Юша | Compressor with liquid pistons |
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