CN205191220U - Instrument air supply system - Google Patents
Instrument air supply system Download PDFInfo
- Publication number
- CN205191220U CN205191220U CN201520884653.0U CN201520884653U CN205191220U CN 205191220 U CN205191220 U CN 205191220U CN 201520884653 U CN201520884653 U CN 201520884653U CN 205191220 U CN205191220 U CN 205191220U
- Authority
- CN
- China
- Prior art keywords
- supply gas
- instrument supply
- house steward
- instrument
- gas house
- 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.)
- Active
Links
Landscapes
- Pipeline Systems (AREA)
Abstract
The utility model discloses an instrument air supply system, it includes nitrogen gas air supply, instrument supply gas house steward, instrument supply gas gas holder, valves commonly used, reserve valves, the instrument supply gas gas holder passes through connecting pipe and the total union coupling of instrument supply gas, instrument supply gas house steward input is connected with the nitrogen gas air supply, and instrument supply gas house steward's output and instrument supply gas pipe network are connected, be equipped with valves commonly used on the instrument supply gas house steward between connecting pipe and instrument supply gas house steward input, reserve valves is parallelly connected with valves commonly used, be equipped with pressure switch on the instrument supply gas house steward between connecting pipe and instrument supply gas house steward output, pressure switch and solenoid valve signals commonly used are connected. The utility model discloses an advantage: break down or instrument supply gas pipe network when the leak source appearing as air separation device, use nitrogen gas to supply pressure as the instrument supply gas pipe network, guarantee the normal operating of instrument supply gas pipe network, and then avoid the chemical plant production system to break down.
Description
Technical field:
The utility model relates to a kind of instrument air system, relates in particular to a kind of instrument air supply system.
Background technique
Instrument supply gas refers to the driving source of the gas for pneumatic actuator, and as sealing source of the gas, automatic valve drive source of the gas etc., at present, chemical plant instrument supply gas is generally provided by air separation facility, and the supply of instrument supply gas is that instrument starts and the normal necessary condition run.But, when air separation facility breaks down or the connecting tube of air separation facility and instrument air exists leak source, instrument supply gas pressure surge can be caused, instrument supply gas pipe network cannot normally be run, and then cause chemical plant production system fault, system can be caused time serious to explode, jeopardize personal safety.
Model utility content:
The purpose of this utility model is to provide a kind of can provide the instrument supply gas of abundance, ensure the instrument air supply system that instrument supply gas system is normally run.
The utility model is implemented by following technological scheme: instrument air supply system, and it comprises Nitrogen source gases, instrument supply gas house steward, instrument supply gas gas holder, conventional valve group, service valve group, and described instrument supply gas gas holder is connected with described instrument supply gas house steward by connecting tube; Described instrument supply gas house steward input end is connected with described Nitrogen source gases, and the output terminal of described instrument supply gas house steward is connected with instrument supply gas pipe network; Described instrument supply gas house steward between described connecting tube and described instrument supply gas house steward input end is provided with described conventional valve group, described conventional valve group comprises two conventional stop valves be arranged in series, between two described conventional stop valves, series connection is provided with conventional pneumatic ball valve, conventional safety check, conventional showering guilding valve, and described conventional pneumatic ball valve is provided with solenoid valve; Described service valve group is in parallel with described conventional valve group, and described service valve group comprises two stop valves for subsequent use be arranged in series, and between two described stop valves for subsequent use, series connection is provided with safety check for subsequent use, showering guilding valve for subsequent use; Described instrument supply gas house steward between described connecting tube and described instrument supply gas house steward output terminal is provided with pressure switch, and described pressure switch is connected with described solenoid valve signal.
Advantage of the present utility model: when air separation facility breaks down or connecting tube occurs leak source, use nitrogen is instrument supply gas pipe network supplementary pressure, ensures that instrument supply gas pipe network normally runs, and then avoids chemical plant production system to break down.
Accompanying drawing illustrates:
Fig. 1 is overall structure schematic diagram of the present utility model.
Nitrogen source gases 1, instrument supply gas house steward 2, instrument supply gas gas holder 3, conventional valve group 4, service valve group 5, connecting tube 6, pressure switch 7, instrument supply gas pipe network 8, conventional stop valve 41, conventional pneumatic ball valve 42, conventional safety check 43, conventional showering guilding valve 44, solenoid valve 45, stop valve for subsequent use 51, safety check for subsequent use 52, showering guilding valve for subsequent use 53.
Embodiment:
As shown in Figure 1, instrument air supply system, it comprises Nitrogen source gases 1, instrument supply gas house steward 2, instrument supply gas gas holder 3, conventional valve group 4, service valve group 5, and instrument supply gas gas holder 3 is connected with instrument supply gas house steward 2 by connecting tube 6; Instrument supply gas house steward 2 input end is connected with Nitrogen source gases 1, and use nitrogen is instrument supply gas pipe network 8 supplementary pressure, prevents the initiating system fault because of air separation facility fault; The output terminal of instrument supply gas house steward 2 is connected with instrument supply gas pipe network 8; Instrument supply gas house steward 2 between connecting tube 6 and instrument supply gas house steward 2 input end is provided with conventional valve group 4, conventional valve group 4 comprises two conventional stop valves 41 be arranged in series, between two conventional stop valves 41, series connection is provided with conventional pneumatic ball valve 42, conventional safety check 43, conventional showering guilding valve 44, and conventional pneumatic ball valve 42 is provided with solenoid valve 45; Service valve group 5 is in parallel with conventional valve group 4, and service valve group 5 comprises two stop valves for subsequent use 51 be arranged in series, and between two stop valves 51 for subsequent use, series connection is provided with safety check 52 for subsequent use, showering guilding valve for subsequent use 53; Generally, conventional stop valve 41, the conventional safety check 43 of conventional valve group 4 are in open mode, and the nitrogen that Nitrogen source gases 1 exports is instrument supply gas pipe network 8 supplementary pressure through conventional valve group 4; When conventional pneumatic ball valve 42 breaks down, close conventional stop valve 41, conventional safety check 43 overhauls conventional pneumatic ball valve 42 or changes, and start service valve group 5, the nitrogen that Nitrogen source gases 1 exports is instrument supply gas pipe network 8 supplementary pressure through service valve group 5; Instrument supply gas house steward 2 between connecting tube 6 and instrument supply gas house steward 2 output terminal is provided with pressure switch 7, generally instrument supply gas gas holder 3 pressure is interval at 0.42Mpa-0.62Mpa, Nitrogen source gases 1 pressure remains on about 0.55Mpa, so the value of setting pressure switch is 0.42Mpa; Pressure switch 7 is connected with solenoid valve 45 signal; Pressure in pressure switch 7 real-time detector table gas house steward 2 pipe, and then output signal controls the keying of conventional pneumatic ball valve 42 by solenoid valve 45, prevents instrument supply gas from scurrying into Nitrogen source gases 1, ensures the purity of Nitrogen source gases 1; When pressure switch 7 detects that instrument supply gas house steward 2 pressure is less than 0.42Mpa, conventional pneumatic ball valve 42 is opened, and Nitrogen source gases 1 is instrument supply gas pipe network 8 supplementary pressure; When detecting that instrument supply gas house steward 2 pressure is greater than 0.42Mpa when pressure switch 7, conventional pneumatic ball valve 42 is closed, by instrument supply gas gas holder 3 separately for instrument supply gas pipe network 8 provides pressure.
Claims (1)
1. instrument air supply system, is characterized in that, it comprises Nitrogen source gases, instrument supply gas house steward, instrument supply gas gas holder, conventional valve group, service valve group, and described instrument supply gas gas holder is connected with described instrument supply gas house steward by connecting tube; Described instrument supply gas house steward input end is connected with described Nitrogen source gases, and the output terminal of described instrument supply gas house steward is connected with instrument supply gas pipe network; Described instrument supply gas house steward between described connecting tube and described instrument supply gas house steward input end is provided with described conventional valve group, described conventional valve group comprises two conventional stop valves be arranged in series, between two described conventional stop valves, series connection is provided with conventional pneumatic ball valve, conventional safety check, conventional showering guilding valve, and described conventional pneumatic ball valve is provided with solenoid valve; Described service valve group is in parallel with described conventional valve group, and described service valve group comprises two stop valves for subsequent use be arranged in series, and between two described stop valves for subsequent use, series connection is provided with safety check for subsequent use, showering guilding valve for subsequent use; Described instrument supply gas house steward between described connecting tube and described instrument supply gas house steward output terminal is provided with pressure switch, and described pressure switch is connected with described solenoid valve signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520884653.0U CN205191220U (en) | 2015-11-04 | 2015-11-04 | Instrument air supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520884653.0U CN205191220U (en) | 2015-11-04 | 2015-11-04 | Instrument air supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205191220U true CN205191220U (en) | 2016-04-27 |
Family
ID=55784207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520884653.0U Active CN205191220U (en) | 2015-11-04 | 2015-11-04 | Instrument air supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205191220U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023752A (en) * | 2017-05-27 | 2017-08-08 | 遵义中铂硬质合金有限责任公司 | Ammonia air supply system and its application method |
| CN108561757A (en) * | 2018-03-19 | 2018-09-21 | 创尔特热能科技(中山)有限公司 | Parameter setting method of gas leakage detection device |
-
2015
- 2015-11-04 CN CN201520884653.0U patent/CN205191220U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107023752A (en) * | 2017-05-27 | 2017-08-08 | 遵义中铂硬质合金有限责任公司 | Ammonia air supply system and its application method |
| CN108561757A (en) * | 2018-03-19 | 2018-09-21 | 创尔特热能科技(中山)有限公司 | Parameter setting method of gas leakage detection device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN205191220U (en) | Instrument air supply system | |
| CN203500629U (en) | Piston type control gas chamber structure for safe cut-off valves | |
| CN203732253U (en) | Pressure switch detection device | |
| CN102313624B (en) | Mono-crystalline furnace vacuum pipe pressure detection alarm system and control method thereof | |
| CN202733017U (en) | Hand stop valve | |
| CN205192812U (en) | Gaseous automatic sampling device of portable sulfur hexafluoride | |
| CN110848179A (en) | Intelligent gas pressurization system and use method thereof | |
| CN203820458U (en) | PSA (Pressure Swing Adsorption) nitrogen production output device | |
| CN102620145A (en) | Automatic low-pressure protection system for coke oven gas pipeline | |
| CN203453168U (en) | Blowout preventer control device with pneumatic pressure testing function | |
| CN203981845U (en) | Buchholz relay on-site calibration device | |
| CN204213394U (en) | Automatic pressure Inductance valve | |
| CN204437711U (en) | A kind of fecder system network air inlet detecting and controlling system of methane station | |
| CN104064787B (en) | A kind of backup power system of fuel cell Hydrogen Vapor Pressure control method | |
| CN203490133U (en) | Pressure pipe fitting bursting test machine | |
| CN204165723U (en) | Pickling normalizing furnace gaspipe line airtight test device | |
| CN101285554A (en) | Multipath oxygen filling system | |
| CN204057245U (en) | A kind of automatic pneumatic ash-transmission system | |
| CN204756446U (en) | Industrial gas furnace steady voltage pipe -line system | |
| CN205383058U (en) | Unqualified medical air backflow device | |
| CN201221672Y (en) | Multiplex oxygen filling and charging system | |
| CN215480715U (en) | Automatic switching device for normal pressure water and high pressure water | |
| CN204851448U (en) | Engine fuel valves system | |
| CN104198168A (en) | Fault detecting method and device for control unit of engine exhaust gas valve | |
| CN109306951A (en) | A kind of energy saving device of air pump |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |