CN209067427U - A kind of natural gas compressor - Google Patents
A kind of natural gas compressor Download PDFInfo
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- CN209067427U CN209067427U CN201821955575.9U CN201821955575U CN209067427U CN 209067427 U CN209067427 U CN 209067427U CN 201821955575 U CN201821955575 U CN 201821955575U CN 209067427 U CN209067427 U CN 209067427U
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- valve
- compression set
- surge tank
- gas
- natural gas
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Abstract
The utility model discloses a kind of natural gas compressors, pass through the mutual cooperation of the first valve and the second valve, to realize that the gas of this compression set compression drives the pneumatic ball valve of this compression set as instrument wind, while saving user cost, main line and other pipeline switching can also be carried out according to compression set virtual condition, switch compression set between low-load and heavy duty, improves the service life of compression set and the stability of compression set.Pre- shutdown mode is set before shutdown, reduces the oil content inside compression set in gs-oil separator, reduces the oil content of discharge gas, to reduce the consumption of oil, increases the service life of gs-oil separator.After shutdown, the first valve is closed, third valve is opened, gas is recycled in air inlet surge tank, achievees the purpose that resource reclaim, realizes that gas and compression set are cut off, avoids security risk existing for oil sealing gas leakage, guarantee the safety of complete equipment.
Description
Technical field
The utility model relates to mechanical design field, in particular to a kind of natural gas compressor.
Background technique
Natural gas is the nontoxic gas of colorless and odorless, has calorific value high, flameholding is environmental clean and cheap etc. excellent
Gesture is often used as the alternative fuel of city bus, taxi, short-distance transport, distributed energy.
It usually requires for the natural gas of 2barg directly to connect with compression set, natural gas be compressed, in compression set
Just when starting, compression set does not enter normal compression condition, if the direct compressed natural gas in compressor start, can increase
The starting load of pressurization compression apparatus, greatly reduces the service life of compression set.
Utility model content
For the above defect of the existing technology, the main purpose of the utility model is to overcome the deficiencies in the prior art
Place discloses a kind of natural gas compressor, including surge tank, inlet duct, compression set and cooling device, the surge tank
Including air inlet surge tank and outlet surge tank, the air inlet surge tank, the inlet duct, the compression set, the cooling
Device and the outlet surge tank are sequentially connected；
The inlet duct includes pneumatic ball valve, the first valve, the second valve, main line, other pipeline and takes air pipe, institute
It states main line to connect with the air inlet surge tank and the compression set with the both ends of the other pipeline, the pneumatic ball valve string
It connects in the main line, first valve is serially connected in the other pipeline, and second valve takes air pipe by described
It is connect with the outlet side of the compression set, the gas of the compression set compression passes through the second valve control as instrument wind
Make the access and disconnection of the pneumatic ball valve；
The outlet side of the compression set is connect by first check-valve with the cooling device.
It further, further include third valve and second check-valve, it is described that air pipe is taken to pass through the third valve and institute
Second check-valve is stated to connect with the air inlet surge tank.
Further, minimum pressure valve is set between the outlet side of the compression set and the first check-valve.
Further, it is described take air pipe take gas point the compression set outlet side and the minimum pressure valve it
Between.
Further, the external safety valve of outlet surge tank.
It further, further include pressure-regulating valve, the outlet surge tank and the air inlet surge tank pass through the pressure
Regulating valve connection.
Further, filter device is installed in the gas outlet of the outlet surge tank.
The utility model obtain the utility model has the advantages that
The utility model passes through the mutual cooperation of the first valve and the second valve, to realize the gas of this compression set compression
Body drives the pneumatic ball valve of this compression set as instrument wind, while saving user cost, additionally it is possible to according to compression set
Virtual condition carries out main line and other pipeline switching, switches compression set between low-load and heavy duty, improves compression dress
The stability of the service life and compression set set.Pre- shutdown mode is set before shutdown, reduces oil gas inside compression set
Oil content in separator, reduces the oil content of discharge gas, to reduce the consumption of oil, increases the longevity of gs-oil separator
Life.After shutdown, the first valve is closed, third valve is opened, gas is recycled in air inlet surge tank, the mesh of resource reclaim is reached
, it realizes that gas and compression set are cut off, avoids security risk existing for oil sealing gas leakage, guarantee the safety of complete equipment.
Detailed description of the invention
Fig. 1 is a kind of schematic diagram of natural gas compressor of the utility model；
Appended drawing reference is as follows:
2, inlet duct, 3, compression set, 4, cooling device, 5, first check-valve, 11, air inlet surge tank, 12, outlet it is slow
Rush tank, 21, pneumatic ball valve, the 22, first valve, the 23, second valve 24, main line, 25, other pipeline, 26, take air pipe, 31, pressure
Contracting machine, 32, oil tank, 33, gs-oil separator, 34, thermostat valve, 35, third check-valves, 36, filter, 61, third valve, 62,
Second check-valve, 64, minimum pressure valve, 65, safety valve, 66, pressure-regulating valve, 67, filter device.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, with reference to the accompanying drawing and implement
Example is described in further detail the utility model.It should be appreciated that specific embodiment described herein is only to explain this reality
With novel, it is not used to limit the utility model.
A kind of natural gas compressor of the utility model, as shown in Figure 1, including surge tank, inlet duct 2, compression set 3
With cooling device 4, surge tank includes air inlet surge tank 11 and outlet surge tank 12, air inlet surge tank 11, inlet duct 2, compression
Device 3, cooling device 4 and outlet surge tank 12 are sequentially connected；Natural gas initially enters in air inlet surge tank 11, then by into
Natural gas in air inlet surge tank 11 is sent in compression set 3 by device of air 2, the natural gas that cooling device 4 completes compression
It is cooled down, then in pouring outlet surge tank 12, is finally discharged into air collector.Wherein,
Inlet duct 2 includes pneumatic ball valve 21, the first valve 22, the second valve 23, main line 24, other pipeline 25 and takes gas
Pipeline 26, main line 24 are connect with air inlet surge tank 11 and compression set 3 with the both ends of other pipeline 25, i.e. air inlet surge tank 11
It is connect by main line 24 with compression set 3, other pipeline 25 is connected in parallel on main line 24；Pneumatic ball valve 21 is serially connected in main line 24
Interior, the first valve 22 is serially connected in other pipeline 25, and the second valve 23 is by taking the outlet side of air pipe 26 and compression set 3 to connect
Connect, by the second valve 23 control 21 instrument wind of pneumatic ball valve access and disconnection, and then control pneumatic ball valve 21 opening and
It closes；The outlet side of compression set 3 is connect by first check-valve 5 with cooling device 4.First valve 22 and the second valve 23 can
To use solenoid valve.
First valve 22 and the second valve 23 are opened, when the natural gas in air inlet surge tank 11 enters in inlet duct 2, gas
Body is flow in compression set 3 from other pipeline 25, at this point, the amount of gas is less, reduces the load of compression set 3, compression set 3 will
Gas is compressed, and the pressure of outlet side is gradually increasing, and takes the pressure of gas point is also synchronous to rise, gas from take gas point by taking
Air pipe 26 is sent on pneumatic ball valve 21, and after gas reaches certain pressure, pneumatic ball valve 21 is opened, in air inlet surge tank 11
Gas is transmitted by main line 24, at this point, other pipeline 25 can close, can also be opened.Pass through setting main line and side
Pipeline ensure that low-load starts in equipment starting, reduces the damage to compression set, improves its service life.Using pressure
The compressed gas of contracting machine controls the opening and closing of pneumatic ball valve as instrument wind, does not need from external instrument wind, drop
Low equipment use cost, in addition, the first valve 22 of cooperation and the second valve 23, only when reaching normal in compressor and its pipeline
When operating pressure, i.e., when gas pressure reaches operating pressure, which opens pneumatic ball valve 21 as instrument wind, keeps gas complete
Speed input.It can be seen that by the on-off that pneumatic ball valve 21 controls main line 24 being controlled according to 3 virtual condition of compression set
, it is not to be controlled by the time, only after compressor reaches normal operating conditions, main line 24 can be just opened.In this way
The service life of compression set is further improved, and improves compression efficiency, reduces energy consumption.
Compression set 3 includes compressor 31, oil tank 32, gs-oil separator 33, thermostat valve 34 and third check-valves 35, compression
Machine 31, oil tank 32, gs-oil separator 33 are sequentially connected with, and the oil outlet of oil tank 32 is connect by thermostat valve 34 with compressor 31, shape
At circuit, and the other end of thermostat valve 34 is connect with cooling device 4, and the oil outlet of gs-oil separator 33 passes through third check-valves
35 connect with compressor 31.Oil in oil tank 32 is sprayed into when compressor 31 operates to be mixed with gas, is sent to after compression
Preliminary Oil-gas Separation is carried out in oil tank 32, most of oil backs into oil tank 32, the gas with a small amount of oil to gs-oil separator
In 33, remaining oil is separated with gas, oil is back in compressor 31 by third check-valves 35, and gas passes through first check-valve 5
It is cooling to be sent into cooling device 4.When thermostat valve 34 senses that oil temperature increases, thermostat valve 34 changes direction of transfer, oil is sent into cold
But device 4 spray into compressor 31 again after cooling down to it.Preferably, oil gas filter is set in 31 oil inlet front end of compressor
36 pairs of oil are filtered.
In one embodiment, further include third valve 61 and second check-valve 62, air pipe 26 is taken to pass through third valve 61
11 tanks are buffered with air inlet with second check-valve 62 to connect.The structure is used for shutdown phase, it is therefore an objective to by the residue in compression set 3
Gas discharge, drains back in air inlet surge tank 11.Third valve 61 can be solenoid valve, control the on-off on the end pipe road；The
Two check-valves 62 are used to prevent the gas of discharge from flowing back into compression set 3.
In one embodiment, minimum pressure valve 64 is set between the outlet side of compression set 3 and first check-valve 5.It is minimum
The effect of pressure valve 64 is after gas reaches the operating air pressure of minimum pressure valve 64, and minimum pressure valve 64 can just be opened, and makes gas
Body passes through；First check-valve 5 only plays the role of preventing from flowing backwards；Pass through the phase interworking of first check-valve 5 and minimum pressure valve 64
It closes, improves the precision of 3 gas pressure of compression set.
In a preferred embodiment, the outlet side and minimum pressure valve 64 for taking gas point in compression set 3 of air pipe 26 are taken
Between.Minimum pressure valve 64 guarantees just pass through after gas reaches operating pressure, therefore, gas point will be taken to be arranged in minimum pressure valve
Before 64, it can guarantee that the pressure of 21 instrument wind of pneumatic ball valve is according to the actual situation in change；It is assumed that working as compression set 3
Compressed gas pressure decline, the pressure can not open starting valve 21, at this point, being carried out by the other pipeline 25 of opening defeated
Gas makes compression set 3 enter low-load state；And the pressure of 64 rear end of minimum pressure valve 3 initial start stage of compression set always
For low pressure, pneumatic ball valve 21 can not be opened, it, just can be by gas only after 64 forward end gas of minimum pressure valve reaches operating pressure
It is sent to rear end, needs long time to the process, compression set 3 has a very long time and is in low-load state, makes
It is low at compression efficiency, waste energy consumption.
In one embodiment, the external safety valve 65 of outlet surge tank 12.When the pressure in outlet surge tank 12 is more than safety
The pressure of valve 65, the gas in outlet surge tank 12 are discharged from safety valve 65, guarantee the safety of equipment.In a preferred embodiment
In, it further include pressure-regulating valve 66, outlet surge tank 12 is connect with air inlet surge tank 11 by pressure-regulating valve 66.When outlet is slow
The air pressure rushed in tank 12 is greater than the operating pressure of pressure-regulating valve 66, and is less than the pressure of safety valve 65, outlet surge tank 12
Interior gas is discharged into air inlet surge tank 11 by pressure-regulating valve 66, avoids gas from wasting, and be directly discharged into control and cause
Pollution.
In one embodiment, filter device 67 is installed in the gas outlet of air inlet surge tank 11, is filtered, prevents miscellaneous to gas
Matter enters rear end equipment, causes to damage to equipment.
The invention also discloses a kind of natural gas compressing methods, include the following steps:
S1 accesses gas source in air inlet surge tank 11, the first valve 22 and the second valve 23 is opened, at this point, main line 24
It disconnects, other 25 access of pipeline, compression set 3 operates；Gas enters in compression set 3 by other pipeline 25, at this point, gas is few
Gas is measured, compression set 3 is in low-load starting state.
S2, by the operating of compression set 3, the gas in pipeline is compressed, and 3 rear end air pressure of compression set increases, and takes gas
Pipeline 26 takes gas point air pressure to increase, main by taking air pipe 26 and the second valve 23 that gas is sent in pneumatic ball valve 21
24 access of pipeline starts cooling device 4；At this point, 3 rear end air pressure of compression set reaches service pressure, compression set enters
Normal compressive state opens main line 24 and enters heavy duty work status.
Compressed gas is conveyed into after outlet surge tank 1 and drains into air collector again into normal compression stage by S3；
S4 is shut down after cutting off gas source after other compressions.
Wherein, it is shut down in advance before being shut down in step S4, pre- shut down includes closing the second valve 23, and the first valve 22 is beaten
Open, the output power of compression set 3 be reduced to 10% hereinafter, operation at least 30 seconds.The step can will be in gs-oil separator 33
A small amount of remaining oil pressure enters in compressor 31, greatly reduces the consumption of oil in this way, reduces the oil content in exhaust gas, increases
Service life of gs-oil separator 33.
In step S4, after equipment downtime, the first valve 22 is closed, opens third valve 61.Compression can in this way filled
The gas in 3 is set by taking air pipe 26 to be back in air inlet surge tank 11 by third valve and second check-valve 62.Cut off into
Device of air 2, the gas in air inlet surge tank 11 end equipment will not transmit backward, and the gas in compression set 3 passes through oil gas
After separation, oil-free gas is transmitted in air inlet surge tank 1；It realizes and participates in gas recycling, oily recycling, and each section is cut
It is disconnected, protect the safety of whole device.
The above is only the preferred embodiments of the utility model, are not used to limit the scope of the utility model；If
The spirit and scope for not departing from the utility model, are modified or replaced equivalently the utility model, should all cover in this reality
In novel scope of protection of the claims.
Claims (7)
1. a kind of natural gas compressor, which is characterized in that described including surge tank, inlet duct, compression set and cooling device
Surge tank includes air inlet surge tank and outlet surge tank, the air inlet surge tank, the inlet duct, the compression set, institute
It states cooling device and the outlet surge tank is sequentially connected；
The inlet duct includes pneumatic ball valve, the first valve, the second valve, main line, other pipeline and takes air pipe, the master
Pipeline is connect with the air inlet surge tank and the compression set with the both ends of the other pipeline, and the pneumatic ball valve is serially connected in
In the main line, first valve is serially connected in the other pipeline, and second valve takes air pipe and institute by described
The outlet side connection of compression set is stated, the gas of the compression set compression controls institute by second valve as instrument wind
State the access and disconnection of pneumatic ball valve；
The outlet side of the compression set is connect by first check-valve with the cooling device.
2. a kind of natural gas compressor according to claim 1, which is characterized in that further include third valve and the second non-return
Valve, it is described that air pipe is taken to connect by the third valve and the second check-valve with the air inlet surge tank.
3. a kind of natural gas compressor according to claim 1, which is characterized in that the outlet side of the compression set and institute
It states and minimum pressure valve is set between first check-valve.
4. a kind of natural gas compressor according to claim 3, which is characterized in that it is described take air pipe take gas point in institute
It states between the outlet side of compression set and the minimum pressure valve.
5. a kind of natural gas compressor according to claim 1, which is characterized in that the external safety of outlet surge tank
Valve.
6. a kind of natural gas compressor according to claim 5, which is characterized in that further include pressure-regulating valve, it is described go out
Gas surge tank is connect with the air inlet surge tank by the pressure-regulating valve.
7. -6 any a kind of natural gas compressor according to claim 1, which is characterized in that the air inlet surge tank goes out
Port installs filter device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821955575.9U CN209067427U (en) | 2018-11-26 | 2018-11-26 | A kind of natural gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821955575.9U CN209067427U (en) | 2018-11-26 | 2018-11-26 | A kind of natural gas compressor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209067427U true CN209067427U (en) | 2019-07-05 |
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ID=67100494
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| Application Number | Title | Priority Date | Filing Date |
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| CN201821955575.9U Active CN209067427U (en) | 2018-11-26 | 2018-11-26 | A kind of natural gas compressor |
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| Country | Link |
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| CN (1) | CN209067427U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320671A (en) * | 2021-12-22 | 2022-04-12 | 中船动力镇江有限公司 | Natural gas pressurization system with adjustable flow |
-
2018
- 2018-11-26 CN CN201821955575.9U patent/CN209067427U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114320671A (en) * | 2021-12-22 | 2022-04-12 | 中船动力镇江有限公司 | Natural gas pressurization system with adjustable flow |
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