CN206469064U - The dual gas supply combined supply gas system of natural gas power - Google Patents
The dual gas supply combined supply gas system of natural gas power Download PDFInfo
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- CN206469064U CN206469064U CN201720116301.XU CN201720116301U CN206469064U CN 206469064 U CN206469064 U CN 206469064U CN 201720116301 U CN201720116301 U CN 201720116301U CN 206469064 U CN206469064 U CN 206469064U
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Abstract
The utility model discloses the dual gas supply combined supply gas system of natural gas power, including the LNG sources of the gas pipeline, power plant's pressure regulation metering sled and power plant's supply air line being sequentially connected, the LNG source of the gas pipelines of power plant's pressure regulation metering sled front end are connected in parallel to supervisor's net source of the gas pipeline, the first pressure regulator is provided between supervisor's net source of the gas pipeline and power plant's pressure regulation metering sled, the dual gas supply combined supply gas system of natural gas power, power plant's pressure regulation metering sled includes gas filter, flowmeter and the second pressure regulator being sequentially connected.The utility model realizes dual gas supply supply, using LNG sources of the gas as main air supply source, LNG source of the gas supply faults, when causing LNG gas source feed insufficient pressures, when the pressure of LNG source of the gas pipelines drops to the outlet pressure of the first pressure regulator, first pressure regulator can prize power plant's pressure regulation metering the pressure stability of front end to the inlet pressure ranges of the first pressure regulator, so as to the lasting supply of power plant's combustion gas.
Description
Technical field
The utility model is related to fuel gas generation technical field, and in particular to fuel gas generation design of gas source technology.
Background technology
With the development of construction, the demand to the energy is also more and more, and is used as the combustion gas in the energy with respect to environmental protection
It is even more particularly important.At present in gas industry, natural gas power technology is also ripe day by day, the choosing of most domestic power plants generating electricity
Its feature of environmental protection can all be considered with fuel, clean energy resource natural gas is even more one of power plant's preferred fuels, now, LNG gas holder stations deposit
LNG gasification after enter after the filtering of power plant pressure regulation metering sled, metering, pressure regulation can directly electric power supply plant use.
However, in power generation process, single LNG sources of the gas can not ensure the just conventional gas of power plant completely, become air supply system
Weak link, when LNG sources of the gas are not enough or during the failure of LNG supply systems, it is impossible to normal supply, directly affect power plant
The regular supply of electric power.
Utility model content
To exclude the existing not enough risk brought of LNG power stations supply and loss, spy provides a kind of dual gas supply combined supply gas
System.
In order to solve the above technical problems, the utility model provides following technical scheme：
The dual gas supply combined supply gas system of natural gas power, including LNG sources of the gas pipeline, the power plant's pressure regulation metering being sequentially connected
Sled and power plant's supply air line, the LNG source of the gas pipelines of power plant's pressure regulation metering sled front end are connected in parallel to supervisor's net source of the gas pipeline,
The first pressure regulator is provided between supervisor's net source of the gas pipeline and power plant's pressure regulation metering sled.
Further, the dual gas supply combined supply gas system of natural gas power, power plant's pressure regulation metering sled includes connecting successively
Gas filter, flowmeter and the second pressure regulator connect.
Further, the dual gas supply combined supply gas system of natural gas power, the outlet pressure of second pressure regulator is less than
The outlet pressure of first pressure regulator.
Further, the dual gas supply combined supply gas system of natural gas power, the outlet pressure of first pressure regulator is
2.9MPa。
Further, the dual gas supply combined supply gas system of natural gas power, the LNG sources of the gas pipeline and power plant's pressure regulation
Cryogenic pump is provided between metering sled, LNG sources of the gas gasify after being pressurizeed through cryogenic pump, the admission pressure of LNG sources of the gas pipeline after gasification
For 3.0MPa.
Compared with prior art, the beneficial effects of the utility model are as follows：
Dual gas supply supply is realized, using LNG sources of the gas as main air supply source, LNG source of the gas supply faults cause LNG gas source feed
During insufficient pressure, when the pressure of LNG source of the gas pipelines drops to the outlet pressure of the first pressure regulator, the first pressure regulator can be by power plant
Pressure regulation metering prizes the pressure stability of front end to the inlet pressure ranges of the first pressure regulator.So as to the lasting supply of power plant's combustion gas.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the schematic diagram of existing LNG gas source feed；
Fig. 2 is the schematic diagram of the utility model dual gas supply combined supply gas.
Embodiment
The technical scheme in the utility model embodiment will be clearly and completely described below, it is clear that described
Embodiment is only a part of embodiment of the present utility model, rather than whole embodiments.Based on the implementation in the utility model
Example, all other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made is belonged to
The scope of the utility model protection.
The utility model embodiment includes：
The supply design as shown in figure 1, existing LNG generates electricity, including the LNG sources of the gas pipeline 1 being sequentially connected, power plant's pressure regulation
Metering sled 2 and power plant's supply air line 3.
The dual gas supply combined supply gas system of natural gas power as shown in Figure 2, including be sequentially connected LNG sources of the gas pipeline 1,
Power plant's pressure regulation metering sled 2 and power plant's supply air line 3, the LNG sources of the gas pipeline 1 that power plant's pressure regulation metering prizes 2 front ends are connected in parallel
There is supervisor's net source of the gas pipeline 4, the first pressure regulator 5 is provided between supervisor's net source of the gas pipeline 4 and power plant's pressure regulation metering sled 2.
Preferably, power plant's pressure regulation metering sled 2 includes gas filter 21, the and of flowmeter 22 being sequentially connected
Second pressure regulator 23.
Preferably, the outlet pressure of second pressure regulator 23 is less than the outlet pressure of the first pressure regulator 5.
Preferably, the outlet pressure of first pressure regulator is 2.9MPa.
Preferably, cryogenic pump is provided between LNG sources of the gas pipeline 1 and power plant's pressure regulation metering sled 2,
LNG sources of the gas gasify after being pressurizeed through cryogenic pump, and the admission pressure of LNG sources of the gas pipeline 1 is 3.0MPa after gasification.
Operation principle of the present utility model：Under nominal situation, LNG sources of the gas pipeline prized by power plant pressure regulation metering after directly to
Power plant or generator supply, supplys in such as LNG sources of the gas pipeline and break down, LNG supply gas pressures are reduced, when supply gas pressure as little as the
During the outlet pressure of one pressure regulator setting, power plant's pressure regulation meter can be entered by the first pressure regulator by being responsible for the gas of net source of the gas pipeline
In amount sled, to stablize the admission pressure that power plant's pressure regulation metering prizes front end, the purpose persistently supplied to power plant or generator is reached, when
After the supply gas pressure of LNG source of the gas pipelines recovers, supply gas pressure of the LNG gas source feed pressure higher than supervisor's net source of the gas pipeline, you can
Automatically switch to LNG supply.
The utility model has advantages below：Realize power plant or generator supplies the automatic switchover of source of the gas, effective guarantee
The regular supply of source of the gas, it is to avoid power plant can not continue to supply brought risk.
And：
1st, this dual gas supply combined supply gas system is applicable to all LNG and urban pipe network while the field supplied as source of the gas
Institute, application is wide.
2nd, dual gas supply joint supply, by the way of the using and the reserved, when gas source point breaks down all the way, another road can be thrown
Enter to use, reliability enhancing.
3rd, only need to set a pressure regulator all the way in urban pipe network, the pressure of monitoring LNG source of the gas supplies sets pressure regulator
Opening pressure be slightly below the pressure on LNG sources of the gas road, can be achieved with the function of automatically switching, it is not necessary to manually open.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model description, or directly or indirectly it is used in other phases
The technical field of pass, is similarly included in scope of patent protection of the present utility model.
Claims (5)
1. the dual gas supply combined supply gas system of natural gas power, including LNG sources of the gas pipeline, the power plant's pressure regulation metering sled being sequentially connected
And power plant's supply air line, it is characterised in that the LNG source of the gas pipelines of power plant's pressure regulation metering sled front end are connected in parallel to supervisor's net
Source of the gas pipeline, the first pressure regulator is provided between supervisor's net source of the gas pipeline and power plant's pressure regulation metering sled.
2. the dual gas supply combined supply gas system of natural gas power according to claim 1, it is characterised in that the power plant adjusts
Pressure metering sled includes gas filter, flowmeter and the second pressure regulator being sequentially connected.
3. the dual gas supply combined supply gas system of natural gas power according to claim 2, it is characterised in that described second adjusts
The outlet pressure of depressor is less than the outlet pressure of the first pressure regulator.
4. the dual gas supply combined supply gas system of natural gas power according to claim 3, it is characterised in that described first adjusts
The outlet pressure of depressor is 2.9MPa.
5. the dual gas supply combined supply gas system of natural gas power according to claim 4, it is characterised in that the LNG gas
Cryogenic pump is provided between source capsule road and power plant's pressure regulation metering sled, LNG sources of the gas gasify after being pressurizeed through cryogenic pump, after gasification
The admission pressure of LNG source of the gas pipelines is 3.0MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720116301.XU CN206469064U (en) | 2017-02-07 | 2017-02-07 | The dual gas supply combined supply gas system of natural gas power |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720116301.XU CN206469064U (en) | 2017-02-07 | 2017-02-07 | The dual gas supply combined supply gas system of natural gas power |
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| CN206469064U true CN206469064U (en) | 2017-09-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533964A (en) * | 2018-05-25 | 2018-09-14 | 钦州学院 | A kind of more gas source feed systems and its air supply method |
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2017
- 2017-02-07 CN CN201720116301.XU patent/CN206469064U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108533964A (en) * | 2018-05-25 | 2018-09-14 | 钦州学院 | A kind of more gas source feed systems and its air supply method |
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