CN202100944U - Switching system with piston type low-pressure nitrogen compressor providing instrument air - Google Patents
Switching system with piston type low-pressure nitrogen compressor providing instrument air Download PDFInfo
- Publication number
- CN202100944U CN202100944U CN2011201628611U CN201120162861U CN202100944U CN 202100944 U CN202100944 U CN 202100944U CN 2011201628611 U CN2011201628611 U CN 2011201628611U CN 201120162861 U CN201120162861 U CN 201120162861U CN 202100944 U CN202100944 U CN 202100944U
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- China
- Prior art keywords
- nitrogen
- air
- instrument air
- valve
- pipe network
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- Expired - Fee Related
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Abstract
The utility model discloses a switching system with a piston type low-pressure nitrogen compressor providing instrument air. The working procedures of the switching system include that a compressed nitrogen working procedure is switched to a compressed instrument air working procedure, and then the compressed instrument air working procedure is switched to a compressed low-pressure nitrogen working procedure. The switching system solves the problems of low utilization ratio, daily maintenance cost and the like of existing idle equipment. By the aid of the switching system, balance of an instrument air pipe network is ensured when an instrument air compression station (or an air separation unit) is in accidental shutdown, the low-pressure nitrogen compressor system is improved to be capable of compressing the air so as to emergently provide the instrument air for all workshops of an enterprise, and further safety is ensured, production is resumed quickly, and the switching system is of great significance for manufacturing enterprises engaged in chemical industry, metallurgy and the like which mainly utilize instrument air control valves in industrial production of China.
Description
Technical field
The utility model relates to the switched system of instrument air, is specially compressor converted the causing through valve of a kind of piston type low-pressure nitrogen and switches the piston type low pressure nitrogen press confession instrument air switched system that the suction atmosphere supplies instrument air outward.
Background technique
Since human society gets into industrialized production, the automatic technology develop rapidly, pneumatic regulation technology uses extensively in the commercial production, and the instrument air compress technique is widely used.
The pressure of fitness for purpose instrument air is 0.4-0.7MPa (gauge pressure), and the static air consumption of the instrument air of every pneumatic valve is about: 20L/h.In general, the air consumption of modulating valve (comprising positioning work piece) approximately is 1M
3/ h.The frequency of cut-off valve and switch number of times has much relations, normally also can be by 1M
3/ h meter.If do the Utilities consumption calculations, with every deck valve air consumption 2M
3/ h.
Instrument air pressure difference relates to the size of instrument air knock out drum.The action of practical adjustments valve valve rod; The pressure (generally not being higher than 0.35MPa) that the pressure that needs when being the positioning work piece action is responsible for far below instrument air; And the modulating valve required pressure that is used under the different operating modes is not quite similar; In order to guarantee the needed pressure of valve, modulating valve carries the instrument air reduction valve, with the pressure of instrument air modulation needs.In addition, instrument air pressure is set about 0.7MPa, from the consideration of two aspects, guarantees to satisfy any valve event pressure urgent service life when guaranteeing factory's confession instrument air compressor fault on the other hand on the one hand.
Therefore, a kind of piston type low pressure nitrogen press confession instrument air switched system that uses that can be used between nitrogen and air, switching being provided, has been a problem of needing solution badly.
Summary of the invention
In order to overcome above-mentioned deficiency of the prior art; The utility model provides the not enough pressure of a kind of instrument air pipe network tolerance low; Pneumatic valve can not regular event, threatens the safe condition after production line stops and delays to produce Recovery time, in order to guarantee the normal supply of full factory device air; Idle piston type low pressure nitrogen press is transformed; Can send the molecular sieve purifier adsorption cleaning with the air after the compression, the gas after qualified is sent outside as instrument air, provides the piston type low pressure nitrogen press of instrument air to supply the instrument air switched system.
The purpose of the utility model is achieved in that
Piston type low pressure nitrogen press supplies the instrument air switched system; Comprise the compressor bank 4 that the nitrogen pipe network connects; Nitrogen tube is provided with nitrogen inlet valve 1 on the net; Compressor bank 4 is connected with the outer nitrogen pipe network that supplies, and supplies nitrogen tube to be provided with nitrogen on the net outward and supplies valve 10 outward, and nitrogen supplies the outer confession nitrogen tube between valve 10 and the compressor bank 4 to be connected with vent muffler 7 on the net outward; Connecting tube between vent muffler 7 and the outer confession nitrogen pipe network is provided with unit atmospheric valve 5, and it is characterized in that: the nitrogen tube between described nitrogen inlet valve 1 and the compressor bank 4 is connected with air filter 3 on the net; Vent muffler 7 is connected molecular sieve filter 8 with the outer joint of nitrogen pipe network that supplies through pipeline, and molecular sieve filter connects instrument air pipe network 11 through pipeline.
Pipeline between described nitrogen pipe network and the air filter 3 is provided with air inlet valve 2.
Connecting tube between outer confession nitrogen pipe network and the molecular sieve filter 8 is provided with pressurized air and advances molecular sieve valve 6; Connecting tube between molecular sieve filter 8 and the instrument air pipe network is provided with pressurized air and goes out molecular sieve valve 9.
Positive beneficial effect: the utility model provides the not enough pressure of a kind of instrument air pipe network tolerance low; Pneumatic valve can not regular event; Safe condition after threatening production line and stopping also delays to produce Recovery time; In order to guarantee the normal supply of full factory device air, idle piston type low pressure nitrogen press is transformed, can send the molecular sieve purifier adsorption cleaning with the air after the compression; Gas after qualified is sent outside as instrument air, provides the piston type low pressure nitrogen press of instrument air to supply the instrument air switched system.Native system has solved problems such as utilization ratio to existing Idle plant is low, regular maintenance expense; This system has guaranteed the balance of instrument air compressor plant (or air separation facility) instrument air pipe network when disastershutdown; The low-pressure nitrogen compressor assembly is improved; Make it can pressurized air; For each manufacturing shop of enterprise promptly provides instrument air, realize to guarantee safety, the purpose of resuming production fast, to being that master's manufacturing enterprises such as chemical industry, metallurgy are significant with instrument air regulating and controlling valve in China's commercial production.
Description of drawings
Fig. 1 is the utility model schematic flow sheet:
Among the figure be: nitrogen inlet valve 1, air inlet valve 2, air filter 3, compressor bank 4, unit atmospheric valve 5, pressurized air advance molecular sieve valve 6, vent muffler 7, molecular sieve filter 8, pressurized air and go out molecular sieve valve 9, nitrogen and supply valve 10, instrument air pipe network 11 outward.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
Piston type low pressure nitrogen press supplies the instrument air switched system; Comprise the compressor bank 4 that the nitrogen pipe network connects; Nitrogen tube is provided with nitrogen inlet valve 1 on the net; Compressor bank 4 is connected with the outer nitrogen pipe network that supplies, and supplies nitrogen tube to be provided with nitrogen on the net outward and supplies valve 10 outward, and nitrogen supplies the outer confession nitrogen tube between valve 10 and the compressor bank 4 to be connected with vent muffler 7 on the net outward; Connecting tube between vent muffler 7 and the outer confession nitrogen pipe network is provided with unit atmospheric valve 5, and it is characterized in that: the nitrogen tube between described nitrogen inlet valve 1 and the compressor bank 4 is connected with air filter 3 on the net; Vent muffler 7 is connected molecular sieve filter 8 with the outer joint of nitrogen pipe network that supplies through pipeline, and molecular sieve filter connects instrument air pipe network 11 through pipeline.
Pipeline between described nitrogen pipe network and the air filter 3 is provided with air inlet valve 2.
Connecting tube between outer confession nitrogen pipe network and the molecular sieve filter 8 is provided with pressurized air and advances molecular sieve valve 6; Connecting tube between molecular sieve filter 8 and the instrument air pipe network is provided with pressurized air and goes out molecular sieve valve 9.
Embodiment 1
Start-stop when the low-pressure nitrogen compressor supplies instrument air outward, the method for operation are identical with the outer mode of low-pressure nitrogen that supplies; Difference is when as the instrument air compressor, will close import and export of nitrogen valve 1; Open air pipe line air inlet valve 2 and advance molecular sieve valve 6, open draining system with pressurized air, send compressed air valve outside before " 8 " blind plate be inverted generic state; Nitrogen supplies valve 10 preceding blank ofves outward; All appearance control valves on the closure molecule sieve filter 8 are incorporated instrument air pipe network 11 front opening pressurized air into and are gone out molecular sieve valve 9, supply qualified instrument air outward.
Embodiment 2
When air separation facility moved, compressor supplied air inlet valve 2, the pressurized air of air pipe line to advance molecular sieve valve 6 outward and the air that contracts of incorporating instrument supply gas pipe network 11 into goes out molecular sieve valve 9 and need close; Compressor supplies the air inlet valve 2 back blank ofves of instrument air pipeline outward, and " 8 " blind plate was inverted closed condition before pressurized air advanced molecular sieve valve 6, and blind plate took out before nitrogen supplied valve 10 outward, closed the inter-stage draining system, possessed the outer low-pressure nitrogen condition that supplies.
Control mode: start-stop, the method for operation during low-pressure nitrogen compressor compresses instrument air are identical with the mode of compression and low pressure nitrogen; Difference is when as the instrument supply gas compressor, will close the import and export of nitrogen valve; Open the terminal valve of air compression, all appearance control valves on the closure molecule sieve purifying machine.
When air separation facility moved, the terminal valve of low-pressure nitrogen compressor air need be closed with the valve of incorporating the instrument supply gas pipe network into.When molecular sieve adsorber needs maintenance or low-pressure nitrogen compressor to press nitrogen, need blank off to isolate, replace, close draining system simultaneously.
The utility model provides the not enough pressure of a kind of instrument air pipe network tolerance low; Pneumatic valve can not regular event, threatens the safe condition after production line stops and delays to produce Recovery time, in order to guarantee the normal supply of full factory device air; Idle piston type low pressure nitrogen press is transformed; Can send the molecular sieve purifier adsorption cleaning with the air after the compression, the gas after qualified is sent outside as instrument air, provides the piston type low pressure nitrogen press of instrument air to supply the instrument air switched system.Native system has solved problems such as utilization ratio to existing Idle plant is low, regular maintenance expense; This system has guaranteed the balance of instrument air compressor plant (or air separation facility) instrument air pipe network when disastershutdown; The low-pressure nitrogen compressor assembly is improved; Make it can pressurized air; For each manufacturing shop of enterprise promptly provides instrument air, realize to guarantee safety, the purpose of resuming production fast, to being that master's manufacturing enterprises such as chemical industry, metallurgy are significant with instrument air regulating and controlling valve in China's commercial production.
Above embodiment only is used to explain the preferred implementation of the utility model; But the utility model is not limited to above-mentioned mode of execution; In the ken that said field those of ordinary skill is possessed; Any modification of being done within spirit of the utility model and the principle, be equal to and substitute and improvement etc., it all should be encompassed within the technological scheme scope that the utility model asks for protection.
Claims (3)
1. piston type low pressure nitrogen press supplies the instrument air switched system; Comprise the compressor bank (4) that the nitrogen pipe network connects; Nitrogen tube is provided with nitrogen inlet valve (1) on the net; Compressor bank (4) is connected with the outer nitrogen pipe network that supplies; Outer confession nitrogen tube is provided with nitrogen on the net and supplies valve (10) outward; Nitrogen supplies the outer confession nitrogen tube between valve (10) and the compressor bank (4) to be connected with vent muffler (7) on the net outward, and the connecting tube between vent muffler (7) and the outer confession nitrogen pipe network is provided with unit atmospheric valve (5), and it is characterized in that: the nitrogen tube between described nitrogen inlet valve (1) and the compressor bank (4) is connected with air filter (3) on the net; Vent muffler (7) is connected molecular sieve filter (8) with the outer joint of nitrogen pipe network that supplies through pipeline, and molecular sieve filter (8) connects instrument air pipe network (11) through pipeline.
2. piston type low pressure nitrogen press according to claim 1 supplies the instrument air switched system, and it is characterized in that: the pipeline between described nitrogen pipe network and the air filter (3) is provided with air inlet valve (2).
3. piston type low pressure nitrogen press according to claim 1 supplies the instrument air switched system, it is characterized in that: supply connecting tube between nitrogen pipe network and the molecular sieve filter (8) to be provided with pressurized air outward and advance molecular sieve valve (6); Connecting tube between molecular sieve filter (8) and the instrument air pipe network (11) is provided with pressurized air and goes out molecular sieve valve (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201628611U CN202100944U (en) | 2011-05-20 | 2011-05-20 | Switching system with piston type low-pressure nitrogen compressor providing instrument air |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201628611U CN202100944U (en) | 2011-05-20 | 2011-05-20 | Switching system with piston type low-pressure nitrogen compressor providing instrument air |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202100944U true CN202100944U (en) | 2012-01-04 |
Family
ID=45386953
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201628611U Expired - Fee Related CN202100944U (en) | 2011-05-20 | 2011-05-20 | Switching system with piston type low-pressure nitrogen compressor providing instrument air |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202100944U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867895A (en) * | 2012-12-10 | 2014-06-18 | 河南宇天化工有限公司 | Gas supply system for benzene hydrogenation device |
| CN105509414A (en) * | 2014-09-23 | 2016-04-20 | 宝山钢铁股份有限公司 | Heating device and heating method for oxygen-making expander |
-
2011
- 2011-05-20 CN CN2011201628611U patent/CN202100944U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103867895A (en) * | 2012-12-10 | 2014-06-18 | 河南宇天化工有限公司 | Gas supply system for benzene hydrogenation device |
| CN105509414A (en) * | 2014-09-23 | 2016-04-20 | 宝山钢铁股份有限公司 | Heating device and heating method for oxygen-making expander |
| CN105509414B (en) * | 2014-09-23 | 2017-12-26 | 宝山钢铁股份有限公司 | The heating apparatus and heating method of oxygen expanding machine processed |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120104 Termination date: 20130520 |