CN203656574U - Instrument gas supply device - Google Patents
Instrument gas supply device Download PDFInfo
- Publication number
- CN203656574U CN203656574U CN201320841835.0U CN201320841835U CN203656574U CN 203656574 U CN203656574 U CN 203656574U CN 201320841835 U CN201320841835 U CN 201320841835U CN 203656574 U CN203656574 U CN 203656574U
- Authority
- CN
- China
- Prior art keywords
- valve
- air line
- gas
- supply air
- pressure
- 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 - Lifetime
Links
- 239000007788 liquid Substances 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 8
- 230000008016 vaporization Effects 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 103
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 20
- 238000000926 separation method Methods 0.000 description 15
- 238000011144 upstream manufacturing Methods 0.000 description 12
- 229910052757 nitrogen Inorganic materials 0.000 description 10
- 239000012535 impurity Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002808 molecular sieve Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Landscapes
- Pipeline Systems (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The utility model discloses an instrument gas supply device, which is characterized by comprising a gas generation device, a gas storage device, a common gas supply pipeline, a standby gas supply pipeline and an output pipeline, wherein the gas generation device is communicated with the common gas supply pipeline; the gas storage device is communicated with the standby gas supply pipeline; a first one-way valve is arranged on the common gas supply pipeline; a second one-way valve is arranged on the standby gas supply pipeline; the common gas supply pipeline and the standby gas supply pipeline are connected in parallel and are all communicated with the output pipeline; when the output pressure of the common gas supply pipeline is higher than that of the standby gas supply pipeline, gas generated by the gas generation device is conveyed to an instrument gas using point through the common gas supply pipeline and the output pipeline; when the output pressure of the common gas supply pipeline is lower than that of the standby gas supply pipeline, gas stored in the gas storage device is conveyed to the gas using point through the common gas supply pipeline and the output pipeline. According to the instrument gas supply device, the pipelines can be automatically switched.
Description
Technical field
The utility model relates to a kind of instrument supply gas feeding mechanism.
Background technique
Instrument supply gas feeding mechanism is a kind of gas that gas making device is produced is transported to instrument use gas point device by pipeline, and common gas making device has air-separating plant etc.Air-separating plant, referred to as air separation facility, is the complexes that are made up of the equipment such as air compressor, molecular sieve purifier, through the source of the gas that air separation facility separates, purified gas can be used as instrument supply gas.Instrument supply gas refers to the driving source of the gas for pneumatic actuator, as sealing source of the gas, automatic valve drive source of the gas etc.; After processing, further secondary filter can be used as source of the gas, the sealing source of the gas of equipment or the bearing gas of pneumatic bearing of precision instrument.The supply of instrument supply gas is that instrument starts and the normal necessary condition of moving, and current instrument supply gas feeding mechanism exists following deficiency and defect:
First, in the time that air separation facility is stopped transport, instrument supply gas feeding mechanism need to start appendage gas, the coming into operation of appendage gas need to manually start appendage air compressor and pressurized air processing unit or manual switch valve goalkeeper instrument supply gas and be switched to supply air line for subsequent use, this just causes appendage gas can not meet in real time stand-by heat, occur instrument supply gas supply discontinuity in short-term, such interruption may cause equipment, pipeline, the interior superpressure of container or cold to leak; In the time that factory occurs to have a power failure, independently air compressor cannot start, and causes without appendage gas available.
Secondly, existing appendage gas supply chain because of simplicity of design or choose gas source purification process simple and easy, thereby stop transport and easily cause because source of the gas carries water, wet goods and air separation facility is had to the impurity of huge contaminativity while being forced to select bailout gas supply instrument supply gas at device, thereby damage precision instrument or excessive contaminants is brought into and in air separation column, caused larger potential safety hazard.
Have to be exactly, appendage source of the gas flow scheme design need to increase extra air compressing and cleaning equipment at present again, and in the time of the normal operation of device, these extra equipment that increase are substantially in idle state, and this has just caused the waste of resource and the increase of cost.
In view of current present situation and the problem of existence, can be in the time that air separation facility be stopped transport in the urgent need to one, the instrument supply gas feeding mechanism that cut-in stand-by instrument supply gas carries out instrument supply gas supply rapidly automatically.
Summary of the invention
The purpose of this utility model is in order to overcome the deficiencies in the prior art, provide a kind of can be automatically rapidly cut-in stand-by instrument supply gas carry out instrument supply gas supply and cost is low, stability is high, be easy to the instrument supply gas feeding mechanism safeguarded.
For achieving the above object, the utility model is achieved through the following technical solutions:
A kind of instrument supply gas feeding mechanism, is characterized in that, comprises gas making device, caisson, conventional supply air line, supply air line for subsequent use and output pipe; Described gas making device is communicated with described conventional supply air line; Described caisson is communicated with described supply air line for subsequent use; Described conventional supply air line is provided with the first one-way valve, and described supply air line for subsequent use is provided with the second one-way valve, described conventional supply air line and described supply air line parallel connection for subsequent use, and be all communicated with described output pipe; In the time that the delivery pressure of described conventional supply air line is greater than the delivery pressure of described supply air line for subsequent use, the gas that described gas making device is produced is transported to instrument gas point by described conventional supply air line and described output pipe; In the time that the delivery pressure of described conventional supply air line is less than the delivery pressure of described supply air line for subsequent use, the gas of described caisson storage is transported to and is used gas point by described supply air line for subsequent use and described output pipe.
Preferably, described gas making device is air-separating plant.
Preferably, described gas making device is communicated with described caisson, and described caisson is stored the gas that described gas making device is produced.
Preferably, described caisson is liquid gas storage device, and the downstream pipeline of described caisson is also provided with vaporizing unit.
Preferably, described conventional supply air line also comprises the first pressure regulator valve, and described supply air line for subsequent use also comprises the second pressure regulator valve; The setting pressure of described the second pressure regulator valve is lower than the setting pressure of described the first pressure regulator valve.
Preferably, described conventional supply air line also comprises the first cut-off valve, the second cut-off valve and two first manual cut-off valves; Described the first cut-off valve is arranged on described conventional supply air line front end, and described the second cut-off valve is arranged on described conventional supply air line end, on the pipeline before the described first manual cut-off valve is arranged on respectively described the first pressure regulator valve valve and after valve.
Preferably, described conventional supply air line also comprises the first bypass line, and on the pipeline before the two ends of described the first bypass tube are located at described the first pressure regulator valve valve and after valve, described the first bypass line is provided with bypass valve.
Preferably, described supply air line for subsequent use also comprises the 3rd cut-off valve, the 4th cut-off valve and two second manual cut-off valves; Described the 3rd cut-off valve is arranged on described supply air line front end for subsequent use, and described the 4th cut-off valve is arranged on described supply air line end for subsequent use, on the pipeline before the described second manual cut-off valve is arranged on respectively described the second pressure regulator valve valve and after valve.
Preferably, described supply air line for subsequent use also comprises the second bypass line, on the pipeline before the two ends of described the second bypass line are located at described the second pressure regulator valve valve and after valve; Described the second bypass line is provided with bypass valve.
Preferably, be also provided with several the first pressure test devices and the first blow through valve on described conventional supply air line, described the first pressure test device is arranged on respectively on the pipeline at described the first pressure regulator valve two ends; Described the first blow through valve is arranged on the pipeline after the first pressure regulator valve valve; And/or on described supply air line for subsequent use, being also provided with several the second pressure test devices and the second blow through valve, described the second pressure test device is arranged on respectively on the pipeline at described the second pressure regulator valve two ends; Described the second blow through valve is arranged on the pipeline after the second pressure regulator valve valve.
The principle that the utility model can be realized automatic switchover appendage gas is: in the time that gas making device moves, the delivery pressure of conventional supply air line is greater than the delivery pressure of supply air line for subsequent use, now, the upstream pressure of the first one-way valve is greater than downstream pressure, and in the time that upstream pressure is greater than cracking pressure, the first one-way valve is opened, now, because the upstream pressure of the second one-way valve is less than downstream pressure, the second closed check valve, the gas that gas making device is produced is transported to and is used gas point by conventional supply air line and output pipe; In the time that gas making device is stopped transport, the pressure of conventional supply air line can automatic continuous decline, and supply air line for subsequent use is because storing bailout gas, its delivery pressure can not reduce, and now, the upstream pressure of the first one-way valve is less than downstream pressure, the first closed check valve, the second one-way valve upstream pressure is greater than downstream pressure, and the second one-way valve is opened, and the gas of caisson storage is transported to and used gas point by supply air line for subsequent use and output pipe.
The utlity model has following advantage: (1) is poor by utilizing the working principle of one-way valve switch and setting loine pressure, makes instrument supply gas feeding mechanism in the time that gas making device is stopped transport, can be automatically rapidly cut-in stand-by supply air line supply with instrument supply gas; (2), because one-way valve prevents the characteristic of backflowing, in the time that conventional supply air line delivery pressure is higher, the process gas of its output can not backflow into supply air line for subsequent use, effectively avoids source of the gas contaminated; (3) by cut-off valve is set, can be fully will commonly use supply air line or supply air line for subsequent use excises from whole supply system, realize the fault treatment to valve in pipeline; By before and after pressure regulator valve, hand off valve being set, pressure regulator valve can be isolated completely, to can process in time or change, be convenient to repaired and maintenance in the time that this valve breaks down; (4) by bypass line and bypass valve are set, when pressure regulator valve is broken down, can supply instrument supply gas by bypass line, improve the stability of gas circuit supply; (5) source of the gas of the source of the gas of supply air line for subsequent use and instrument supply gas feeding mechanism is all taken from same air separation facility, without extra air compressing and cleaning equipment, has reduced largely installation cost and the wasting of resources; (6) liquid gas storage device is can storage compartment liquid gas for subsequent use to do, even if gas making device is stopped transport, also can vaporize to guarantee by vaporizing unit the supply of low pressure cushion gas, cushion gas preferred lower pressure nitrogen, nitrogen resource abundance, with low cost, purity liquid nitrogen is high, clean and contain hardly solid impurity, is desirable instrument air.
Accompanying drawing explanation
Fig. 1 is the utility model embodiment 1 structural representation.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in detail:
Embodiment 1
As shown in Figure 1, a kind of instrument supply gas feeding mechanism, is made up of air separation facility 30, conventional supply air line A, supply air line B for subsequent use, output pipe 33 and instrument use gas point C.
Conventional supply air line A, installs a cutting-off valve 11 at source of the gas pipeline front end, controls the break-make of source of the gas by cut-off valve 11; Send end at instrument supply gas one cut-off valve 13 is installed, the break-make going out for control instrument pneumatic transmission can be excised processing by commonly using supply air line completely if cut-off valve 13 coordinates with cut-off valve 11 from whole supply system, realizes the fault treatment to conventional supply air line; On cut-off valve 11 downstream main lines, a self-contained pressure regulator 12 is installed, automatically adjust for the supply pressure after valve according to preset pressure, this self-contained pressure regulator 12 does not need external driving source of the gas automatically to regulate, simultaneously this valve instrument supply gas pressure size of manual tune valve output as required; Each hand off valve 14 is installed respectively in self-contained pressure regulator 12 front and back, to guarantee isolating self-contained pressure regulator 12 completely, so that handling failure or replacing in time in the time that valve 12 breaks down; Self-contained pressure regulator 12 two ends are provided with a bypass line 16, and bypass line 16 is provided with bypass valve 15, while guaranteeing self-contained pressure regulator 12 fault, can supply instrument supply gas by bypass line 16, have improved the stability of gas circuit supply; Self-contained pressure regulator 12 front and back erecting bed pressure gauge 17 respectively, conveniently reads the pressure before valve 12 valves, after valve; After self-contained pressure regulator 12 valves, blow through valve 18 is installed, for the blowing of impurity, and is coordinated aforementioned two pressure gauges 17 also can easily complete the setting to self-contained pressure regulator 12 delivery pressures; In the upstream of next-door neighbour's cut-off valve 13, one-way valve 19 is installed, is guaranteed that instrument supply gas can not backflow.
Supply air line B for subsequent use, cutting-off valve 21, caisson 32, self-contained pressure regulator 22 and cut-off valve 23 are installed on pipeline successively, hand off valve 24 and on-the-spot pressure gauge 27 are installed respectively in self-contained pressure regulator 22 front and back, the two ends of self-contained pressure regulator 22 are provided with a bypass line 26, bypass valve 25 is housed on bypass line 26, after self-contained pressure regulator 22 valves, blow through valve 28 is installed, in the upstream of next-door neighbour's cut-off valve 23, one-way valve 29 is installed.
When use, operation air separation facility 30, air separation facility 30 is carried instrument supply gas to conventional supply air line A, carries low-pressure nitrogen to supply air line B for subsequent use, and caisson 32 these nitrogen of storage are as cushion gas; Direct-operated regulator 12 is adjusted to optimum position according to rear instrument supply gas pressure demand, and valve 22 is adjusted according to the pressure after valve 12 valves, setup pressure value, guarantee that the downstream pressure of valve 22 is lower than the downstream pressure of valve 12, the about 50kpa of difference, except valve 18 and valve 28, all the other valves are located at fully open position.
In the time that air separation facility 30 moves, the delivery pressure of conventional supply air line A is higher than the delivery pressure of supply air line B for subsequent use, the upstream pressure of one-way valve 19 is greater than downstream pressure, in the time that upstream pressure is greater than the breakout pressure of valve, one-way valve 19 starts, now, because the upstream pressure of one-way valve 29 is less than downstream pressure, valve closing, the gas that air separation facility 30 produces is transported to and is put C with gas by conventional supply air line A and output pipe 33, and because one-way valve prevents the characteristic of backflowing, the instrument supply gas of conventional supply air line A output can not backflow into supply air line B for subsequent use, avoid polluting nitrogen source of the gas, in the time that air separation facility is stopped transport, conventional supply air line A inputs without source of the gas, and delivery pressure can automatic continuous decline, and supply air line B for subsequent use is because having stored bailout gas, its delivery pressure can not reduce, now, the upstream pressure of one-way valve 19 is less than downstream pressure, valve closing, one-way valve 29 upstream pressures are greater than downstream pressure, valve opening, the gas that caisson 32 is stored is transported to gas and is put C by supply air line B for subsequent use and output pipe 33, realizes two-way pipeline and switches automatically and quickly instrument supply gas supply.
Open blow through valve 18 and blow through valve 28, can carry out the blowing of impurity to instrument supply gas and nitrogen for subsequent use.Caisson 32 can be liquid gas storage device, and storage liquid nitrogen is for subsequent use to do, and liquid gas storage device downstream is provided with vaporizing unit, can be that nitrogen is exported as instrument supply gas using liquid nitrogen vaporization.
Except the delivery pressure of setting conventional supply air line with pressure regulator valve is greater than the delivery pressure of supply air line for subsequent use, also can adjust by other means the delivery pressure of two-way pipeline, as the source of the gas that utilizes air separation facility to supply with different pressure makes two-way pipeline have pressure difference etc.Except caisson and one-way valve, other valves in pipeline or pressure gauge dismounting are not all affected to realization of the present utility model.
Embodiment in the utility model, only for the utility model is described, does not form the restriction to claim scope, those skilled in that art can expect other be equal in fact substitute, all in protection domain of the present utility model.
Claims (10)
1. an instrument supply gas feeding mechanism, is characterized in that, comprises gas making device, caisson, conventional supply air line, supply air line for subsequent use and output pipe; Described gas making device is communicated with described conventional supply air line; Described caisson is communicated with described supply air line for subsequent use; Described conventional supply air line is provided with the first one-way valve, and described supply air line for subsequent use is provided with the second one-way valve, described conventional supply air line and described supply air line parallel connection for subsequent use, and be all communicated with described output pipe; In the time that the delivery pressure of described conventional supply air line is greater than the delivery pressure of described supply air line for subsequent use, the gas that described gas making device is produced is transported to instrument gas point by described conventional supply air line and described output pipe; In the time that the delivery pressure of described conventional supply air line is less than the delivery pressure of described supply air line for subsequent use, the gas of described caisson storage is transported to and is used gas point by described supply air line for subsequent use and described output pipe.
2. instrument supply gas feeding mechanism as claimed in claim 1, is characterized in that, described gas making device is air-separating plant.
3. instrument supply gas feeding mechanism as claimed in claim 1, is characterized in that, described gas making device is communicated with described caisson, and described caisson is stored the gas that described gas making device is produced.
4. the instrument supply gas feeding mechanism as described in claim 1 or 3, is characterized in that, described caisson is liquid gas storage device, and the downstream pipeline of described caisson is also provided with vaporizing unit.
5. instrument supply gas feeding mechanism as claimed in claim 1, is characterized in that, described conventional supply air line also comprises the first pressure regulator valve, and described supply air line for subsequent use also comprises the second pressure regulator valve; The setting pressure of described the second pressure regulator valve is lower than the setting pressure of described the first pressure regulator valve.
6. instrument supply gas feeding mechanism as claimed in claim 5, is characterized in that, described conventional supply air line also comprises the first cut-off valve, the second cut-off valve and two first manual cut-off valves; Described the first cut-off valve is arranged on described conventional supply air line front end, and described the second cut-off valve is arranged on described conventional supply air line end, on the pipeline before the described first manual cut-off valve is arranged on respectively described the first pressure regulator valve valve and after valve.
7. instrument supply gas feeding mechanism as claimed in claim 6, it is characterized in that, described conventional supply air line also comprises the first bypass line, and on the pipeline before the two ends of described the first bypass tube are located at described the first pressure regulator valve valve and after valve, described the first bypass line is provided with bypass valve.
8. instrument supply gas feeding mechanism as claimed in claim 5, is characterized in that, described supply air line for subsequent use also comprises the 3rd cut-off valve, the 4th cut-off valve and two second manual cut-off valves; Described the 3rd cut-off valve is arranged on described supply air line front end for subsequent use, and described the 4th cut-off valve is arranged on described supply air line end for subsequent use, on the pipeline before the described second manual cut-off valve is arranged on respectively described the second pressure regulator valve valve and after valve.
9. instrument supply gas feeding mechanism as claimed in claim 8, is characterized in that, described supply air line for subsequent use also comprises the second bypass line, on the pipeline before the two ends of described the second bypass line are located at described the second pressure regulator valve valve and after valve; Described the second bypass line is provided with bypass valve.
10. instrument supply gas feeding mechanism as claimed in claim 9, it is characterized in that, on described conventional supply air line, be also provided with several the first pressure test devices and the first blow through valve, described the first pressure test device is arranged on respectively on the pipeline at described the first pressure regulator valve two ends; Described the first blow through valve is arranged on the pipeline after the first pressure regulator valve valve; And/or on described supply air line for subsequent use, being also provided with several the second pressure test devices and the second blow through valve, described the second pressure test device is arranged on respectively on the pipeline at described the second pressure regulator valve two ends; Described the second blow through valve is arranged on the pipeline after the second pressure regulator valve valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320841835.0U CN203656574U (en) | 2013-12-19 | 2013-12-19 | Instrument gas supply device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320841835.0U CN203656574U (en) | 2013-12-19 | 2013-12-19 | Instrument gas supply device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203656574U true CN203656574U (en) | 2014-06-18 |
Family
ID=50922958
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320841835.0U Expired - Lifetime CN203656574U (en) | 2013-12-19 | 2013-12-19 | Instrument gas supply device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203656574U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109373202A (en) * | 2018-12-18 | 2019-02-22 | 中国石油天然气集团公司 | A kind of gas pipeline terminal main line pressure drop rate monitoring, alarming interlock |
| CN109555975A (en) * | 2018-12-18 | 2019-04-02 | 中国石油天然气集团公司 | A kind of gas pipeline point defeated station main pipeline booster monitoring, alarming and interlocking method |
| CN109555976A (en) * | 2018-12-18 | 2019-04-02 | 中国石油天然气集团公司 | Gas pipeline terminal main line pressure drop rate monitoring, alarming interlock and method |
| CN109611692A (en) * | 2018-12-18 | 2019-04-12 | 中国石油天然气集团公司 | Gas pipeline point defeated station main pipeline booster monitoring, alarming interlock and method |
| CN110671608A (en) * | 2019-10-15 | 2020-01-10 | 华润（南京）市政设计有限公司 | Instrument wind source system |
| CN110857878A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibration method |
| CN110857877A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Calibration method of natural gas standard flowmeter |
| CN110857874A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibrating device |
-
2013
- 2013-12-19 CN CN201320841835.0U patent/CN203656574U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110857878A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibration method |
| CN110857877A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Calibration method of natural gas standard flowmeter |
| CN110857874A (en) * | 2018-08-23 | 2020-03-03 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibrating device |
| CN110857878B (en) * | 2018-08-23 | 2021-03-09 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibration method |
| CN110857874B (en) * | 2018-08-23 | 2021-03-09 | 中国石油天然气股份有限公司 | Natural gas flowmeter calibrating device |
| CN109373202A (en) * | 2018-12-18 | 2019-02-22 | 中国石油天然气集团公司 | A kind of gas pipeline terminal main line pressure drop rate monitoring, alarming interlock |
| CN109555975A (en) * | 2018-12-18 | 2019-04-02 | 中国石油天然气集团公司 | A kind of gas pipeline point defeated station main pipeline booster monitoring, alarming and interlocking method |
| CN109555976A (en) * | 2018-12-18 | 2019-04-02 | 中国石油天然气集团公司 | Gas pipeline terminal main line pressure drop rate monitoring, alarming interlock and method |
| CN109611692A (en) * | 2018-12-18 | 2019-04-12 | 中国石油天然气集团公司 | Gas pipeline point defeated station main pipeline booster monitoring, alarming interlock and method |
| CN109611692B (en) * | 2018-12-18 | 2021-03-30 | 中国石油天然气集团有限公司 | Main pipeline pipe burst monitoring and alarming interlocking device and method for gas pipeline branch and transmission station |
| CN109611692B8 (en) * | 2018-12-18 | 2021-04-23 | 中国石油天然气集团有限公司 | Main pipeline pipe burst monitoring and alarming interlocking device and method for gas pipeline branch and transmission station |
| CN110671608A (en) * | 2019-10-15 | 2020-01-10 | 华润（南京）市政设计有限公司 | Instrument wind source system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203656574U (en) | Instrument gas supply device | |
| CN203892873U (en) | LNG factory instrument air multiplex supply support system | |
| CN203052202U (en) | Continuous nitrogen supply device | |
| WO2010115338A1 (en) | Zero-disturbance switching method for pipeline transportation standby pump | |
| KR20150066250A (en) | Digital Full automatic valve cross-over and controlling system for apparatus of supplying the high pressure gas for industry | |
| CN210219328U (en) | Compressed air centralized supply system of thermal power plant with double-pressure double-mother pipe | |
| CN201354724Y (en) | Compressed air supply system of air compressor house | |
| CN202946920U (en) | Emergency switching-off system of liquefied natural gas tank container | |
| CN207527295U (en) | A kind of compressed air double loop automatic switching control equipment for tobacco shred production line | |
| CN102974015B (en) | Medical oxygen supply device with automatic oxygen source switching function | |
| CN210014208U (en) | Device for improving HCNG unloading efficiency and saving energy | |
| CN209943987U (en) | Be applied to CNG gas supply station and have automatic device of unloading along separate routes of high low pressure | |
| CN105485522B (en) | A kind of liquefied petroleum gas storage tank air-electricity linkage emergency cut-off control device | |
| CN206669315U (en) | A kind of band helping air supply function CNG routines gas station | |
| CN205350851U (en) | Valve control device is promptly cut off in pneumatics of liquefied petroleum gas storage tank | |
| CN201529515U (en) | Automatic draining and slag discharging device for vacuum equipment | |
| CN201608065U (en) | Dry purifier used for pneumatic operating mechanism extra high voltage circuit breaker | |
| CN207122639U (en) | A kind of pneumatic control valve device | |
| CN210595273U (en) | Nitrogen production equipment | |
| CN101285554A (en) | Multipath oxygen filling system | |
| CN205447272U (en) | Controlling means is promptly cut off in electric shaft of liquefied petroleum gas storage tank gas | |
| CN201293205Y (en) | Automatic switchover busbar apparatus | |
| CN217247444U (en) | Built-in filtration type pneumatic conveying system | |
| CN202100944U (en) | Switching system with piston type low-pressure nitrogen compressor providing instrument air | |
| CN201232773Y (en) | Large-capacity four-way change valve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230925 Address after: 233121 Fengyang Industrial Park, Chuzhou City, Anhui Province Patentee after: ANHUI CHINLLENGE GASES Co.,Ltd. Address before: No. 2 Zhinan Road, Huinan Town, Pudong New Area, Shanghai, January 2013 Patentee before: SHANGHAI CHINLLENGE GASES Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140618 |
|
| CX01 | Expiry of patent term |