CN213953832U - Compression system of hydraulic piston type compressor - Google Patents
Compression system of hydraulic piston type compressor Download PDFInfo
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- CN213953832U CN213953832U CN202022779048.0U CN202022779048U CN213953832U CN 213953832 U CN213953832 U CN 213953832U CN 202022779048 U CN202022779048 U CN 202022779048U CN 213953832 U CN213953832 U CN 213953832U
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Abstract
The utility model provides a hydraulic piston compressor compression system, including natural gas pressure boost pipeline, instrument air line, sewage pipes and gas storage pipeline, instrument air line and sewage pipes all communicate mutually with the gas storage pipeline, be provided with one-level pressure boost mechanism and second grade pressure boost mechanism on the natural gas pressure boost pipeline, one-level pressure boost mechanism includes two sets of parallelly connected one-level compression cylinder that sets up, and second grade pressure boost mechanism includes second grade compression cylinder, and two sets of one-level compression cylinder are linked together through one-level heat transfer mechanism and second grade compression cylinder, and second grade compression cylinder communicates mutually with the gas storage pipeline through second grade heat transfer mechanism, and filter equipment and one-level heat transfer mechanism of admitting air all are linked together with sewage pipes. The utility model discloses a set up the two-stage compression on the natural gas pressure boost pipeline, the one-level compression adopts two sets of parallelly connected cylinder synchronous working, and the second grade compression adopts a set of cylinder, wholly improves natural gas compression efficiency greatly through twice continuous compression to the displacement of compression system has been increased.
Description
Technical Field
The utility model relates to a technical field of natural gas compression especially relates to a hydraulic piston compressor compression system.
Background
When the compressor runs, the hydraulic reversing system drives the piston to do reciprocating motion. The piston reciprocates once, and the process of breathing in, compressing, exhaust can be realized in succession in the unilateral cylinder, and the gas compression process promptly: when the piston moves upwards, the working volume in the lower cavity of the cylinder is gradually increased, and the pressure is gradually reduced; when the pressure is reduced to be slightly lower than the pressure in the air inlet pipe, the air in the air inlet pipe jacks the air inlet valve to enter the air cylinder, meanwhile, the working volume in the cavity at the upper part of the air cylinder is gradually reduced, the pressure is increased, and when the piston moves to a certain position rightwards, the pressure of the air in the air cylinder is increased to be slightly higher than the pressure of the air in the exhaust pipe; when the piston moves downwards, the working conditions of the upper cavity and the lower cavity of the cylinder worker are opposite to the working conditions, and the processes of exhausting the lower cavity and sucking the upper cavity are realized; the hydraulic reversing system drives the piston to do reciprocating motion, and the process is repeated, so that continuous compression is realized. The compression system that adopts when unloading at present CNG tank wagon has compression efficiency low, causes the displacement to be little, and the whole unloading process consumes long problem, consequently needs to design the hydraulic compression system of increase displacement urgently.
SUMMERY OF THE UTILITY MODEL
When unloading to present CNG tank wagon, compression system has compression efficiency low, causes the displacement little, and the technical problem of the problem of whole unloading process length consuming time, the utility model provides a hydraulic piston compressor compression system.
In order to solve the above problem, the technical scheme of the utility model is so realized:
a compression system of a hydraulic piston type compressor comprises a natural gas pressurization pipeline, an instrument air pipeline, a sewage discharge pipeline and an air storage pipeline, wherein the natural gas pressurization pipeline is respectively communicated with a CNG tank car, the instrument air pipeline, the sewage discharge pipeline and the air storage pipeline, the instrument air pipeline and the sewage discharge pipeline are both communicated with the air storage pipeline, natural gas pressure boost pipeline is provided with one-level booster mechanism and second grade booster mechanism on the road, and one-level booster mechanism includes two sets of parallelly connected one-level compression cylinder that sets up, and second grade booster mechanism includes second grade compression cylinder, and two sets of one-level compression cylinder all are linked together through filter mechanism and CNG tank wagon admits air, and two sets of one-level compression cylinder are linked together through one-level heat transfer mechanism and second grade compression cylinder, and second grade compression cylinder communicates with the gas storage pipeline through second grade heat transfer mechanism, and filter mechanism and one-level heat transfer mechanism all are linked together with sewage pipes admittedly.
Preferably, the air inlet filter mechanism comprises an air inlet filter, the air inlet filter is communicated with the CNG tank car through a manual control valve, the air inlet filter is communicated with two groups of primary compression cylinders which are arranged in parallel through an automatic air inlet control valve, a medium-pressure automatic air taking control valve is arranged between the automatic air inlet control valve and the primary compression cylinders, an air storage pipeline comprises a high-pressure air storage pipeline and a medium-pressure air storage pipeline, the high-pressure air storage pipeline and the medium-pressure air storage pipeline are respectively provided with a high-pressure automatic air exhaust control valve and a medium-pressure automatic air exhaust control valve, and the medium-pressure automatic air taking control valve, the high-pressure automatic air exhaust control valve and the medium-pressure automatic air exhaust control valve are all communicated with an instrument air pipeline; the high-pressure gas storage pipeline and the medium-pressure gas storage pipeline are communicated with the secondary heat exchange mechanism through an oil-gas separator; the air inlet filter and the oil-gas separator are communicated with a sewage discharge pipeline.
Preferably, the primary heat exchange mechanism comprises a primary heat exchanger and a primary filter, the two groups of primary compression cylinders are communicated with the primary heat exchanger, the primary heat exchanger is communicated with the primary filter, and the primary filter is respectively communicated with the sewage discharge pipeline and the secondary compression cylinder; the secondary heat exchange mechanism comprises a secondary heat exchanger, and the secondary compression air cylinder is respectively communicated with the high-pressure air storage pipeline and the medium-pressure air storage pipeline through the secondary heat exchanger and the oil-gas separator; and an air cooling system is arranged between the primary heat exchanger and the secondary heat exchanger and communicated with each other.
Preferably, the air cooling system comprises a water pump, a water tank and an air cooler, the water pump is communicated with the water tank, the water tank is communicated with the air cooler, and the water pump and the air cooler are communicated with the primary heat exchanger and the secondary heat exchanger.
Preferably, the rear parts of the first-stage compression cylinder and the second-stage compression cylinder are respectively provided with a safety diffusion port, and the safety diffusion ports are communicated with a diffusion pipeline.
Compared with the prior art, the beneficial effects of the utility model are that:
the utility model discloses an adopt the two-stage compression on the natural gas compressed gas way, wherein the one-level compression adopts the double-cylinder parallelly connected, double-cylinder synchronous working, same specification compression cylinder of second grade compression configuration, whole system improves natural gas compression efficiency greatly through the continuous compression of two-stage, and increase compression system's displacement reduces that the CNG tank wagon is long when unloading.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1 is an air inlet filter, 2 is an air inlet automatic control valve, 3 is a medium-pressure air taking automatic control valve, 4 is a high-pressure exhaust automatic control valve, 5 is a medium-pressure exhaust automatic control valve, 6 is a first-stage compression cylinder, 7 is a first-stage heat exchanger, 8 is a first-stage filter, 9 is a second-stage compression cylinder, 10 is a second-stage heat exchanger, 11 is an oil-gas separator, 12 is a water pump, 13 is a water tank, and 14 is an air cooler.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without any creative effort belong to the protection scope of the present invention.
As shown in figure 1, a hydraulic piston compressor compression system comprises a natural gas pressurization pipeline, an instrument air pipeline, a blow-down pipeline and an air storage pipeline, wherein the natural gas pressurization pipeline is respectively communicated with a CNG tank car, the instrument air pipeline, the blow-down pipeline and the air storage pipeline, the instrument air pipeline and the blow-down pipeline are both communicated with the air storage pipeline, the natural gas pressurization pipeline is provided with a first-stage pressurization mechanism and a second-stage pressurization mechanism, the first-stage pressurization mechanism comprises at least two groups of first-stage compression cylinders 6 which are arranged in parallel, the second-stage pressurization mechanism comprises a second-stage compression cylinder 9, the first-stage compression cylinders 6 are both communicated with the CNG tank car through an air inlet filtering mechanism, the first-stage compression cylinders 6 are communicated with the second-stage compression cylinders 9 through first-stage heat exchange mechanisms, the rear pipelines of the first-stage compression cylinders 6 and the second-stage compression, when the gas compression exceeds the preset pressure, the safety relief valve automatically opens for relief pressure, the secondary compression cylinder 9 is communicated with the gas storage pipeline through the secondary heat exchange mechanism, and the gas inlet filtering mechanism and the primary heat exchange mechanism are both communicated with the sewage discharge pipeline.
The air inlet filter mechanism comprises an air inlet filter 1, the air inlet filter 1 is communicated with a CNG tank car through a manual control valve, the air inlet filter 1 is communicated with a first-stage compression cylinder 6 which is arranged in parallel through an air inlet automatic control valve 2, a medium-pressure air taking automatic control valve 3 is arranged between the air inlet automatic control valve 2 and the first-stage compression cylinder 6, an air storage pipeline comprises a high-pressure air storage pipeline and a medium-pressure air storage pipeline, a high-pressure exhaust automatic control valve 4 and a medium-pressure exhaust automatic control valve 5 are respectively arranged on the high-pressure air storage pipeline and the medium-pressure air storage pipeline, and the medium-pressure air taking automatic control valve 3, the high-pressure exhaust automatic control valve 4 and the medium-pressure exhaust automatic control valve 5 are all communicated with an instrument air pipeline; the high-pressure gas storage pipeline and the medium-pressure gas storage pipeline are communicated with the secondary heat exchange mechanism through an oil-gas separator 11; the air inlet filter 1 and the oil-gas separator 11 are both communicated with a sewage discharge pipeline.
The primary heat exchange mechanism comprises a primary heat exchanger 7 and a primary filter 8, the primary compression cylinder 6 is communicated with the primary heat exchanger 7, the primary heat exchanger 7 is communicated with the primary filter 8, and the primary filter 8 is respectively communicated with a sewage discharge pipeline and a secondary compression cylinder 9; the secondary heat exchange mechanism comprises a secondary heat exchanger 10, and a secondary compression air cylinder 9 is respectively communicated with the high-pressure air storage pipeline and the medium-pressure air storage pipeline through the secondary heat exchanger 10 and the oil-gas separator 11; an air cooling system is arranged between the primary heat exchanger 7 and the secondary heat exchanger 10 and communicated with each other, the air cooling system comprises a water pump 12, a water tank 13 and an air cooler 14, the water pump 12 is communicated with the water tank 13, the water tank 13 is communicated with the air cooler 14, and the water pump 12 and the air cooler 14 are both communicated with the primary heat exchanger 7 and the secondary heat exchanger 10.
During operation, the CNG tank car from the gas filling station is metered through the gas discharging column and enters the natural gas compressor supercharging process. The specification of an inlet pipeline is a D38X6 seamless stainless steel pipe, firstly impurities contained in gas are removed through an air inlet filter, then the filtered pure gas enters a first-stage supercharging mechanism through an automatic air inlet automatic control valve for compression, the high-temperature gas after compression work is filtered again and enters a first-stage heat exchanger for cooling, the cooled medium-pressure gas enters a second-stage compression cylinder for compression, safety relief valves are arranged at the rear ends of the first-stage compression and the second-stage compression, when the gas compression exceeds a preset pressure, the safety relief valves are automatically opened for relief and pressure reduction, the high-pressure gas after the second-stage compression is cooled through a second-stage heat exchanger, the cooled high-pressure gas is finely filtered through a final-stage oil-gas separator, so that the gas pressure, temperature and purity meet the use requirements of end-gas-filling vehicles, the integral system greatly improves the natural gas compression efficiency through two-stage continuous compression, and increases the exhaust amount of the compression system, the unloading time of the CNG tank car is shortened.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A hydraulic piston compressor compression system comprises a natural gas pressurization pipeline, an instrument air pipeline, a blow-off pipeline and a gas storage pipeline, wherein the natural gas pressurization pipeline is respectively communicated with a CNG tank car, the instrument air pipeline, the blow-off pipeline and the gas storage pipeline, and the instrument air pipeline and the blow-off pipeline are both communicated with the gas storage pipeline, the hydraulic piston compressor compression system is characterized in that the natural gas pressurization pipeline is provided with a first-stage pressurization mechanism and a second-stage pressurization mechanism, the first-stage pressurization mechanism comprises at least two groups of first-stage compression cylinders (6) which are arranged in parallel, the second-stage pressurization mechanism comprises a second-stage compression cylinder (9), the first-stage compression cylinders (6) are communicated with the CNG tank car through an air inlet filtering mechanism, the first-stage compression cylinders (6) are communicated with the second-stage compression cylinders (9) through a first-stage heat exchange mechanism, and the second-stage compression cylinders (9) are communicated with the gas storage pipeline through a second-stage heat exchange mechanism, the air inlet filtering mechanism and the primary heat exchange mechanism are both communicated with a sewage discharge pipeline.
2. The hydraulic piston compressor compression system of claim 1, the air inlet filtering mechanism comprises an air inlet filter (1), the air inlet filter (1) is communicated with a CNG tank car through a manual control valve, the air inlet filter (1) is communicated with a first-stage compression cylinder (6) which is arranged in parallel through an air inlet automatic control valve (2), a medium-pressure air taking automatic control valve (3) is arranged between the air inlet automatic control valve (2) and the first-stage compression cylinder (6), an air storage pipeline comprises a high-pressure air storage pipeline and a medium-pressure air storage pipeline, a high-pressure air exhaust automatic control valve (4) and a medium-pressure air exhaust automatic control valve (5) are respectively arranged on the high-pressure air storage pipeline and the medium-pressure air storage pipeline, and the medium-pressure air taking automatic control valve (3), the high-pressure air exhaust automatic control valve (4) and the medium-pressure air exhaust automatic control valve (5) are all communicated with an instrument air pipeline; the high-pressure gas storage pipeline and the medium-pressure gas storage pipeline are communicated with the secondary heat exchange mechanism through an oil-gas separator (11); the air inlet filter (1) and the oil-gas separator (11) are communicated with a sewage discharge pipeline.
3. The hydraulic piston compressor compression system as claimed in claim 1 or 2, characterized in that the primary heat exchange means comprises a primary heat exchanger (7) and a primary filter (8), the primary compression cylinder (6) is in communication with the primary heat exchanger (7), the primary heat exchanger (7) is in communication with the primary filter (8), and the primary filter (8) is in communication with the blow-down line and the secondary compression cylinder (9), respectively; the secondary heat exchange mechanism comprises a secondary heat exchanger (10), and a secondary compression cylinder (9) is respectively communicated with the high-pressure gas storage pipeline and the medium-pressure gas storage pipeline through the secondary heat exchanger (10) and the oil-gas separator (11); and an air cooling system is arranged between the primary heat exchanger (7) and the secondary heat exchanger (10) and communicated with each other.
4. The hydraulic piston compressor compression system according to claim 3, wherein the air cooling system comprises a water pump (12), a water tank (13) and an air cooler (14), the water pump (12) is communicated with the water tank (13), the water tank (13) is communicated with the air cooler (14), and the water pump (12) and the air cooler (14) are both communicated with the primary heat exchanger (7) and the secondary heat exchanger (10).
5. The hydraulic piston compressor compression system as claimed in claim 3, characterized in that the rear pipelines of the first stage compression cylinder (6) and the second stage compression cylinder (9) are provided with safety relief ports, which are communicated with the relief pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022779048.0U CN213953832U (en) | 2020-11-26 | 2020-11-26 | Compression system of hydraulic piston type compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022779048.0U CN213953832U (en) | 2020-11-26 | 2020-11-26 | Compression system of hydraulic piston type compressor |
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| Publication Number | Publication Date |
|---|---|
| CN213953832U true CN213953832U (en) | 2021-08-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022779048.0U Active CN213953832U (en) | 2020-11-26 | 2020-11-26 | Compression system of hydraulic piston type compressor |
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|---|---|
| CN (1) | CN213953832U (en) |
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- 2020-11-26 CN CN202022779048.0U patent/CN213953832U/en active Active
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