CN205606186U - Natural gas differential pressure energy recuperation unit device - Google Patents
Natural gas differential pressure energy recuperation unit device Download PDFInfo
- Publication number
- CN205606186U CN205606186U CN201620370295.6U CN201620370295U CN205606186U CN 205606186 U CN205606186 U CN 205606186U CN 201620370295 U CN201620370295 U CN 201620370295U CN 205606186 U CN205606186 U CN 205606186U
- Authority
- CN
- China
- Prior art keywords
- natural gas
- turboexpander
- expander
- turbo
- clutch
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 239000003345 natural gas Substances 0.000 title claims abstract description 34
- 239000007789 gas Substances 0.000 claims abstract description 16
- 238000009434 installation Methods 0.000 claims description 3
- 230000001360 synchronised effect Effects 0.000 claims description 3
- 230000008878 coupling Effects 0.000 abstract 2
- 238000010168 coupling process Methods 0.000 abstract 2
- 238000005859 coupling reaction Methods 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 210000003437 trachea Anatomy 0.000 abstract 1
- -1 turboexpander Chemical compound 0.000 abstract 1
- 238000000926 separation method Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 230000036772 blood pressure Effects 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000003949 liquefied natural gas Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
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- Engine Equipment That Uses Special Cycles (AREA)
Abstract
The utility model provides a natural gas differential pressure energy recuperation unit device sets up to come between trachea line and the natural gas low -voltage equipment pipeline at the natural gas, including turboexpander, turboexpander's admit air pipeline and the natural gas come gas pipeline connection, turboexpander's vent line and the equipment pipeline connection who needs the low pressure natural gas, turboexpander still with clutch, the output shaft and the compressor coaxial coupling of motor, the other end of motor passes through clutch and turboexpander coaxial coupling. Compared with the prior art, the utility model discloses turboexpander sets up with the voltage regulator branch road is parallelly connected, and when turboexpander broke down, in clutch quickly separating, the gas circuit can fast switch over to pressure regulating branch road, not impact systems's normal operating. Set up through turboexpander, can be when the step -down function be realized to effectual replacements voltage regulator, external acting drives the operation of compressor, the effectual reduction from power consumptive, the make full use of of the realization energy.
Description
Technical field
This utility model belongs to fuel gas transmission and technical field of power generation, is specifically related to a kind of natural gas pressure difference energy and reclaims set.
Background technology
Along with gradually building up and the introduction of overseas liquefied natural gas of west_east gas transmission pipeline, and the requirement that national energy-saving reduces discharging, natural gas, as a kind of clean energy resource, the most gradually replaces coal, becomes the main fuel of power plant.The natural gas of plant gas is typically from pipeline, urban gate station or LNG gasification, bleed pressure is higher, and the fuel gas inlet pressure needed for the power plant such as combustion engine, gas fired-boiler is relatively low, and routine is to be carried out the regulation of pressure by pressure regulator, during pressure regulation, bigger heating power and energy loss can be produced.And, more than one natural gas branch road in power plant or door station system, owing to each terminal unit needs pressure different, have needs blood pressure lowering, have needs pressurization, and prior art is to generate electricity with turbo-expander, and compressor is driven by motor, in view of the conveying energy consumption of energy, this is a kind of huge energy dissipation.
Summary of the invention
The technical problems to be solved in the utility model is that the pressure regulation process of conventional pressure regulator can produce bigger heating power and energy loss, and the pressure of power plant or door station system each terminal unit needs is different, have needs blood pressure lowering, have needs pressurization, certain energy consumption can be caused by motor driving with turbo-expander generating, compressor, for solving the problems referred to above, this utility model provides a kind of natural gas pressure difference energy to reclaim set.
The purpose of this utility model is achieved in that
A kind of natural gas pressure difference energy reclaims set, it is arranged on natural gas and comes between gas pipeline and natural gas low-voltage equipment pipeline, including turbo-expander, the admission line of turbo-expander carrys out gas pipeline with natural gas and is connected, the exhaust line of turbo-expander is connected with the equipment installation needing low pressure natural gas, turbo-expander is also connected with clutch, and the output shaft of motor is coaxially connected with compressor, and the other end of motor is coaxially connected with turbo-expander by clutch.
Described motor is synchronous motor.
Described natural gas pressure difference energy reclaims set and arranges with conventional pressure regulation branch circuit parallel connection.
Relative to prior art, this utility model turbo-expander is arranged with pressure regulator branch circuit parallel connection, and when turbo-expander breaks down, while clutch sharp separation, gas circuit can be quickly switched into pressure regulation branch road, does not affect the properly functioning of system.Arranged by turbo-expander, can externally do work, drive the operation of compressor, effectively reduce from power consumption, it is achieved making full use of of the energy while effective replacement pressure regulator realizes buck functionality.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Wherein, 1 is turbo-expander；2 is clutch；3 is motor；4 is compressor；5 is conventional pressure regulation branch road.
Detailed description of the invention
As shown in Figure 1, a kind of natural gas pressure difference energy reclaims set, it is arranged on natural gas and comes between gas pipeline and natural gas low-voltage equipment pipeline, including turbo-expander 1, the admission line of turbo-expander 1 carrys out gas pipeline with natural gas and is connected, the exhaust line of turbo-expander 1 is connected with the equipment installation needing low pressure natural gas, turbo-expander 1 is also connected with clutch 2, the output shaft of motor 3 is coaxially connected with compressor 4, the other end of motor 3 is coaxially connected with turbo-expander 3 by clutch 2, compressor is used for natural gas, cold-producing medium supercharging meets technological requirement.
Described motor 3 is synchronous motor, can change its input power according to the output of turbo-expander 1, when the output of turbo-expander 1 is more than the power consumption of compressor 4, and motor 3 generator operation；Otherwise, motor 3 drives and runs.
Described natural gas pressure difference energy reclaims set and is arranged in parallel with conventional pressure regulation branch road 5, and when turbo-expander 3 breaks down, while clutch 2 sharp separation, gas circuit can be quickly switched into conventional pressure regulation branch road 5, does not affect the properly functioning of system.
Being provided with regulation valve between natural gas carrier pipeline and turbo-expander 1, when turbo-expander 1 breaks down, clutch 2 is rapidly separated, motor 3 drives the operating of compressor 4, regulation valve cuts out simultaneously, and source of the gas is switched to conventional pressure regulation branch road 5, does not affect the safe operation of system.
Using clutch 2 automatically to engage and segregation apparatus, turbo-expander 1 can quickly engage with compressor 4 and separate in the range of speeds set.
Work process of the present utility model is as follows: according to the rotating speed of motor 3, the engagement rotating speed of setpoint clutch 2, when the rotating speed of turbo-expander 1 reaches to engage rotating speed, turbo-expander 1 drives compressor 4 to operate together with motor 3, motor 3 can change its input power according to the output of turbo-expander 1, when the output of turbo-expander 1 is more than the power consumption of compressor 4, motor 3 generator operation；Otherwise, motor 3 drives and runs；When the rotating speed of turbo-expander 1 is less than engagement rotating speed, turbo-expander 1 separates with clutch 2；When turbo-expander 1 breaks down, turbo-expander 1 and clutch 2 sharp separation, motor 3 drives compressor 4 to operate, and regulation valve cuts out simultaneously, and source of the gas is switched to conventional pressure regulation branch road 5, does not affect the safe operation of system.
Relative to prior art, this utility model turbo-expander is arranged with pressure regulator branch circuit parallel connection, and when turbo-expander breaks down, while clutch sharp separation, gas circuit can be quickly switched into pressure regulation branch road, does not affect the properly functioning of system.Arranged by turbo-expander, can externally do work, drive the operation of compressor, effectively reduce from power consumption, it is achieved making full use of of the energy while effective replacement pressure regulator realizes buck functionality.
Above-described is only preferred implementation of the present utility model; it should be pointed out that, for a person skilled in the art, without departing under this utility model general idea premise; can also make some changes and improvements, these also should be considered as protection domain of the present utility model.
Claims (3)
1. a natural gas pressure difference energy reclaims set, it is arranged on natural gas and comes between gas pipeline and natural gas low-voltage equipment pipeline, it is characterized in that: include turbo-expander (1), the admission line of turbo-expander (1) carrys out gas pipeline with natural gas and is connected, the exhaust line of turbo-expander (1) is connected with the equipment installation needing low pressure natural gas, turbo-expander (1) is also connected with clutch (2), the output shaft of motor (3) is coaxially connected with compressor (4), the other end of motor (3) is coaxially connected with turbo-expander (3) by clutch (2).
Natural gas pressure difference energy the most according to claim 1 reclaims set, it is characterised in that: described motor (3) is synchronous motor.
Natural gas pressure difference energy the most according to claim 1 reclaims set, it is characterised in that: described natural gas pressure difference energy reclaims set and is arranged in parallel with conventional pressure regulation branch road (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620370295.6U CN205606186U (en) | 2016-04-28 | 2016-04-28 | Natural gas differential pressure energy recuperation unit device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620370295.6U CN205606186U (en) | 2016-04-28 | 2016-04-28 | Natural gas differential pressure energy recuperation unit device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205606186U true CN205606186U (en) | 2016-09-28 |
Family
ID=56971765
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620370295.6U Expired - Fee Related CN205606186U (en) | 2016-04-28 | 2016-04-28 | Natural gas differential pressure energy recuperation unit device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205606186U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757455A (en) * | 2016-04-28 | 2016-07-13 | 华电郑州机械设计研究院有限公司 | Natural gas differential pressure energy recovery unit device |
-
2016
- 2016-04-28 CN CN201620370295.6U patent/CN205606186U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105757455A (en) * | 2016-04-28 | 2016-07-13 | 华电郑州机械设计研究院有限公司 | Natural gas differential pressure energy recovery unit device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160928 |