CN210739978U - Inlet fire alarm valve bypass pipeline of natural gas pressure regulating station - Google Patents
Inlet fire alarm valve bypass pipeline of natural gas pressure regulating station Download PDFInfo
- Publication number
- CN210739978U CN210739978U CN201921425779.6U CN201921425779U CN210739978U CN 210739978 U CN210739978 U CN 210739978U CN 201921425779 U CN201921425779 U CN 201921425779U CN 210739978 U CN210739978 U CN 210739978U
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- valve
- inlet
- bypass
- fire alarm
- metering unit
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Abstract
The utility model discloses a bypass pipeline of an inlet fire alarm valve of a natural gas pressure regulating station, which comprises an inlet unit and a metering unit which are connected in sequence; the inlet unit comprises a first reserved valve, an inlet fire alarm valve and an inlet fire alarm valve bypass valve which are arranged at the inlet of the natural gas pressure regulating station; the first reserved valve is connected with an inlet fire alarm valve, and the inlet fire alarm valve bypass valve and the inlet fire alarm valve are connected in parallel and then connected with the metering unit; the metering unit comprises a metering unit inlet isolating valve, a metering unit bypass inlet isolating valve, a flow ultrasonic wave meter, a metering unit outlet isolating valve, a metering unit bypass outlet isolating valve, a bleeding main pipe and a pressure regulating station separating and filtering unit; the metering unit inlet isolation valve and the flow ultrasonic meter are sequentially connected in series and then connected with the main diffusing pipe.
Description
Technical Field
The utility model relates to an import fire alarm valve bypass pipeline of natural gas pressure regulating station.
Background
The natural gas pressure regulating station is a natural gas supply device of a gas turbine and has the functions of filtering, depressurizing, heating and the like. In the prior art, in order to cut off an air source in emergency situations such as fire, a natural gas pressure regulating station inlet unit is provided with a fire alarm valve without a bypass unit, the natural gas inlet fire alarm valve cannot be overhauled and tested after long-term operation, and potential safety hazards exist; in order to improve the safety and stability of the operation of the natural gas system, the inlet unit system of the natural gas pressure regulating station is modified, and a bypass unit is added.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to solve above-mentioned problem to a certain extent, provide and to supply import fire alarm valve maintenance, activity test, can import fire alarm valve bypass pipeline in the emergent reserve natural gas pressure regulating station of bypass moreover.
The bypass pipeline of the fire alarm valve at the inlet of the natural gas pressure regulating station comprises an inlet unit and a metering unit which are sequentially connected;
the inlet unit comprises a first reserved valve, an inlet fire alarm valve and an inlet fire alarm valve bypass valve which are arranged at the inlet of the natural gas pressure regulating station; the first reserved valve is connected with an inlet fire alarm valve, and the inlet fire alarm valve bypass valve and the inlet fire alarm valve are connected in parallel and then connected with the metering unit;
the metering unit comprises a metering unit inlet isolating valve, a metering unit bypass inlet isolating valve, a flow ultrasonic wave meter, a metering unit outlet isolating valve, a metering unit bypass outlet isolating valve, a bleeding main pipe and a pressure regulating station separating and filtering unit; the metering unit inlet isolation valve and the flow ultrasonic meter are sequentially connected in series and then connected with the main diffusing pipe; the metering unit bypass inlet isolation valve and the metering unit bypass outlet isolation valve are sequentially connected in series and then connected with the pressure regulating station separation and filtration unit; the pressure regulating station separation and filtration unit is connected with the main diffusion pipe through an outlet isolation valve of the metering unit;
and a DN200 isolation valve is connected in parallel with the inlet fire alarm valve and serves as an inlet fire alarm valve bypass unit isolation valve, the inlet fire alarm valve is connected from the outlet of the first reserved valve at the inlet of the pressure regulating station, and the outlet of the first reserved valve is connected with the bypass pipeline of the inlet metering unit of the natural gas pressure regulating station.
2 isolation valves connected in series are installed between the metering unit bypass inlet isolation valve and the metering unit bypass outlet isolation valve to serve as a primary and a secondary isolation valve of the inlet flowmeter bypass unit, the primary and the secondary isolation valves are connected with a main bleeding pipe, and the two bleeding valves are closed during normal operation.
And a DN200 isolating valve is installed at the outlet of the first reserved valve at the inlet of the pressure regulating station as a second reserved valve.
A sample port isolation valve is disposed between the metering unit bypass inlet isolation valve and the metering unit bypass outlet isolation valve.
This scheme is after import fire alarm valve increases the bypass, can go on line, import fire alarm valve overhauls, is experimental. Through the technical transformation, the bypass unit is additionally arranged for the import fire alarm valve which is important equipment of the natural gas pressure regulating station, not only can be used for maintenance and activity tests of the import fire alarm valve, but also can be used as a bypass emergency standby, and in addition, other equipment of the import unit of the pressure regulating station can be maintained and overhauled, so that the equipment reliability is greatly improved. The newly-added bleed pipe of imported flowmeter bypass unit is once, secondary isolating valve provides the pressure release passageway especially for this unit plant maintenance, has promoted the maintenance security greatly.
Drawings
Fig. 1 is a schematic view of the piping system of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail with reference to the accompanying drawings and the following detailed description. It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only.
As shown in fig. 1, the inlet fire alarm valve bypass pipeline of the natural gas pressure regulating station comprises an inlet unit 1 and a metering unit 2 which are connected in sequence;
the inlet unit 1 comprises a first reserved valve 3, an inlet fire alarm valve 4 and an inlet fire alarm valve bypass valve 5 which are arranged at an inlet of the natural gas pressure regulating station; the first reserved valve 3 is connected with an inlet fire alarm valve 4, and the inlet fire alarm valve bypass valve 5 and the inlet fire alarm valve 4 are connected in parallel and then connected with the metering unit 2.
The metering unit 2 comprises a metering unit inlet isolation valve 6, a metering unit bypass inlet isolation valve 12, a flow ultrasonic meter 7, a metering unit outlet isolation valve 17, a metering unit bypass outlet isolation valve 10, a bleeding main pipe 8 and a pressure regulating station separation and filtration unit 9; the metering unit inlet isolation valve 6 and the flow ultrasonic meter 7 are sequentially connected in series and then connected with the main diffusion pipe 8; the metering unit bypass inlet isolation valve 12 and the metering unit bypass outlet isolation valve 10 are sequentially connected in series and then connected with the pressure regulating station separation and filtration unit 9; the pressure regulating station separation and filtration unit 9 is connected with the bleeding main pipe 8 through a metering unit outlet isolation valve 17.
A DN200 isolation valve is connected in parallel with the inlet fire alarm valve 4 to serve as an inlet fire alarm valve bypass unit isolation valve 14, the inlet fire alarm valve is connected to the outlet of the first reserved valve 3 at the inlet of the pressure regulating station, and the outlet of the first reserved valve is connected with the inlet metering unit bypass pipeline of the natural gas pressure regulating station (connected between the metering unit bypass inlet isolation valve 12 and the metering unit bypass outlet isolation valve 10).
2 isolation valves connected in series are installed between a metering unit bypass inlet isolation valve 12 and a metering unit bypass outlet isolation valve 10 to serve as primary and secondary isolation valves 15 and 16 for inlet flowmeter bypass unit diffusion, the primary and secondary isolation valves 15 and 16 for diffusion are connected with a diffusion main pipe 8, and the two diffusion valves are closed during normal operation.
And a DN200 isolating valve is installed at the outlet of the first reserve valve 3 at the inlet of the pressure regulating station as a second reserve valve 13.
A sample port isolation valve 11 is provided in the metering unit bypass inlet isolation valve 12 and the metering unit bypass outlet isolation valve 10.
This scheme is imported fire alarm valve 4 and increases the bypass after, can go on line, import fire alarm valve 4 overhauls, is experimental. Through the technical transformation, the bypass unit (the second reserved valve 13 and the inlet fire alarm valve bypass unit isolation valve 14) is additionally arranged for the inlet fire alarm valve 4 which is important equipment of the natural gas pressure regulating station, so that the inlet fire alarm valve 4 can be maintained and movably tested, the bypass unit can be used for emergency standby, other equipment of the inlet unit of the pressure regulating station can be maintained and overhauled, and the equipment reliability is greatly improved. The newly-added bleed pipe of import flowmeter bypass unit is once, secondary isolating valve 15, 16 especially provides the pressure release passageway for this unit equipment maintenance, has promoted maintenance safety greatly.
It should be understood that although the present description refers to embodiments, not every embodiment contains only a single technical solution, and such description is for clarity only, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments understood by those skilled in the art.
Claims (4)
1. The bypass pipeline of the fire alarm valve at the inlet of the natural gas pressure regulating station comprises an inlet unit and a metering unit which are sequentially connected;
the inlet unit comprises a first reserved valve, an inlet fire alarm valve and an inlet fire alarm valve bypass valve which are arranged at the inlet of the natural gas pressure regulating station; the first reserved valve is connected with an inlet fire alarm valve, and the inlet fire alarm valve bypass valve and the inlet fire alarm valve are connected in parallel and then connected with the metering unit;
the metering unit comprises a metering unit inlet isolating valve, a metering unit bypass inlet isolating valve, a flow ultrasonic wave meter, a metering unit outlet isolating valve, a metering unit bypass outlet isolating valve, a bleeding main pipe and a pressure regulating station separating and filtering unit; the metering unit inlet isolation valve and the flow ultrasonic meter are sequentially connected in series and then connected with the main diffusing pipe; the metering unit bypass inlet isolation valve and the metering unit bypass outlet isolation valve are sequentially connected in series and then connected with the pressure regulating station separation and filtration unit; the pressure regulating station separation and filtration unit is connected with the main diffusion pipe through an outlet isolation valve of the metering unit; it is characterized in that:
and a DN200 isolation valve is connected in parallel with the inlet fire alarm valve and serves as an inlet fire alarm valve bypass unit isolation valve, the inlet fire alarm valve is connected from the outlet of the first reserved valve at the inlet of the pressure regulating station, and the outlet of the first reserved valve is connected with the bypass pipeline of the inlet metering unit of the natural gas pressure regulating station.
2. The natural gas pressure regulating station inlet fire alarm valve bypass pipeline of claim 1, characterized in that: 2 isolation valves connected in series are installed between the metering unit bypass inlet isolation valve and the metering unit bypass outlet isolation valve to serve as a primary and a secondary isolation valve of the inlet flowmeter bypass unit, the primary and the secondary isolation valves are connected with a main bleeding pipe, and the two bleeding valves are closed during normal operation.
3. The natural gas pressure regulating station inlet fire alarm valve bypass pipeline of claim 1, characterized in that: and a DN200 isolating valve is installed at the outlet of the first reserved valve at the inlet of the pressure regulating station as a second reserved valve.
4. The natural gas pressure regulating station inlet fire alarm valve bypass pipeline of claim 1, characterized in that: a sample port isolation valve is disposed between the metering unit bypass inlet isolation valve and the metering unit bypass outlet isolation valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921425779.6U CN210739978U (en) | 2019-08-30 | 2019-08-30 | Inlet fire alarm valve bypass pipeline of natural gas pressure regulating station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921425779.6U CN210739978U (en) | 2019-08-30 | 2019-08-30 | Inlet fire alarm valve bypass pipeline of natural gas pressure regulating station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210739978U true CN210739978U (en) | 2020-06-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921425779.6U Expired - Fee Related CN210739978U (en) | 2019-08-30 | 2019-08-30 | Inlet fire alarm valve bypass pipeline of natural gas pressure regulating station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210739978U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266764A (en) * | 2021-04-19 | 2021-08-17 | 华电电力科学研究院有限公司 | Natural gas pressure regulating station and method for supercritical circulating fluidized bed boiler gas supply |
-
2019
- 2019-08-30 CN CN201921425779.6U patent/CN210739978U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113266764A (en) * | 2021-04-19 | 2021-08-17 | 华电电力科学研究院有限公司 | Natural gas pressure regulating station and method for supercritical circulating fluidized bed boiler gas supply |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20200612 Termination date: 20210830 |