CN202851296U - Special compressor system for high-purity nitrogen - Google Patents
Special compressor system for high-purity nitrogen Download PDFInfo
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- CN202851296U CN202851296U CN 201220456653 CN201220456653U CN202851296U CN 202851296 U CN202851296 U CN 202851296U CN 201220456653 CN201220456653 CN 201220456653 CN 201220456653 U CN201220456653 U CN 201220456653U CN 202851296 U CN202851296 U CN 202851296U
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Abstract
The utility model relates to a special compressor system for high-purity nitrogen. The special compressor system for the high-purity nitrogen prevents back flowing gas from directly impacting a compressor, so that the service life of the compressor is prolonged. The special compressor system for the high-purity nitrogen comprises the compressor which is driven by a motor, an emptying valve, a gas supplying valve, a gas supplying pipe network and an air inlet pipe which is used for supplying the nitrogen, wherein the gas inlet pipe is connected with a pipeline at a gas inlet end of the compressor, one end of the gas supplying valve is connected with a pipeline at a gas outlet end of the compressor, and the other end of the gas supplying valve is connected with a pipeline of the gas supplying pipe network. The special compressor system for the high-purity nitrogen further comprises a check valve, wherein the check valve is placed on the pipeline between the gas supplying valve and the compressor, and one end of the emptying valve is connected with the pipeline between the check valve and the gas supplying valve through a pipeline.
Description
Technical field
The utility model belongs to the air separation equipment technical field, specifically relates to a kind of high pure nitrogen dedicated compressor system.
Background technique
Air separation plant is exactly take air as raw material, and the method by the compression cycle cryogenic refrigeration is the air liquefy, again through rectifying and from liquid air progressively separation of produced go out the equipment of the inert gases such as oxygen, nitrogen and argon gas.The high pure nitrogen of separating through air separation plant compresses this high pure nitrogen by the high pure nitrogen compressor assembly and provides nitrogen by the pipe network of supplying gas to terminal.At present, the high pure nitrogen compressor assembly mainly is comprised of suction tude, filter, compressor, air delivery valve, the pipe network of supplying gas etc., and this suction tude, filter, compressor, air delivery valve, the pipe network of supplying gas are connected by pipeline successively.After processing, this compressor compresses forms the high pressure high pure nitrogen and by the pipeline flow-direction pipe network of supplying gas, yet, when compressor stops moment, outlet side at compressor forms low pressure, the high pressure high pure nitrogen that is positioned at the pipe network of supplying gas flows backwards, formation is to the compressor impact air-flow, thereby affects the working life of compressor, even causes compressor damage.
Summary of the invention
The purpose of this utility model provides a kind of high pure nitrogen dedicated compressor system, and the direct Shock Compression machine of gas prolongs the working life of compressor thereby it prevents from flowing backwards.
The purpose of this utility model is achieved in that a kind of high pure nitrogen dedicated compressor system, comprise the compressor by driven by motor, atmospheric valve, air delivery valve, the pipe network of supplying gas, the suction tude that supplies nitrogen to pass into, described suction tude is connected with the inlet end pipeline of described compressor, one end of described air delivery valve is connected with the outlet side pipeline of described compressor, the described air delivery valve the other end is connected with the described pipe network pipeline of supplying gas, also comprise safety check, described safety check is on the pipeline between air delivery valve and the compressor, and an end of described atmospheric valve is connected on the pipeline between described safety check and the air delivery valve by pipeline.
On the basis of such scheme and as the preferred version of such scheme: also comprise pressure transmitter for detection of gas transmission pipeline net work pressure, be used for controlling the frequency variator of described motor speed, described motor is electrically connected with power supply by described frequency variator, and described pressure transmitter provides signal for the rotating speed of the described motor of described Frequency Converter Control.
On the basis of such scheme and as the preferred version of such scheme: also comprise reflux valve, one end of described reflux valve is connected with described suction tude by pipeline, and the other end of described reflux valve is connected on the pipeline between compressor and the safety check by pipeline.
The utility model compared to existing technology outstanding and useful technique effect is: high pure nitrogen dedicated compressor of the present utility model system has adopted check valve structure, make the high pressure high pure nitrogen after compressed machine compression is processed only can unidirectionally pass through this safety check, effectively prevent from flowing backwards at compressor parking instantaneous pressure high pure nitrogen, avoid the high pressure high pure nitrogen to impact this compressor, thereby prolonged the working life of compressor.
Description of drawings
Fig. 1 is schematic representation of the present utility model.
Fig. 2 is the schematic representation of the utility model control principle.
Embodiment
The utility model is further described with specific embodiment below in conjunction with accompanying drawing;
As shown in Figure 1, high pure nitrogen dedicated compressor of the present utility model system, the suction tude 4 that comprises the compressor 1 that driven by motor 8, atmospheric valve 2, air delivery valve 3, the pipe network 9 of supplying gas, passes into for nitrogen, suction tude 4 is connected with the inlet end pipeline of compressor 1, one end of air delivery valve 3 is connected with the outlet side pipeline of compressor 1, air delivery valve 3 the other ends are connected with the pipe network pipeline of supplying gas, and also comprise safety check 5, and safety check 5 is on the pipeline between air delivery valve 3 and the compressor 1.One end of atmospheric valve 2 is connected on the pipeline between safety check 5 and the air delivery valve 3 by pipeline, high pure nitrogen dedicated compressor of the present utility model system has adopted check valve structure, make the high pressure high pure nitrogen after compressed machine compression is processed only can unidirectionally pass through this safety check, effectively prevent from flowing backwards at compressor parking instantaneous pressure high pure nitrogen, avoid the high pressure high pure nitrogen to impact this compressor, thereby prolonged the working life of compressor.
In order to guarantee the pressure stability of gas transmission pipeline net work, also comprise pressure transmitter 6 for detection of gas transmission pipeline net work pressure, be used for the frequency variator 7 of control motor 8 rotating speeds, motor 8 is electrically connected with power supply by frequency variator 7, and pressure transmitter provides signal for the rotating speed of Frequency Converter Control motor.Wherein, the mounting type of pressure transmitter can be to adopt to be directly installed on the pipeline, also can be to install pressure inlet tube additional and setting pressure transmitter on this pressure inlet tube at pipeline.For the Installation and Debugging of just pressure transmitter are safeguarded, can be before pressure transmitter mounted valve.Generally, gas transmission pipeline net work is provided with gas holder, and pressure transmitter also can be installed on this gas holder or be connected on the pressure inlet tube of this gas holder.Generally speaking, for the mounting point of pressure transmitter, as long as the pressure that the measured data of this pressure transmitter can be reflected on this gas transmission pipeline net work changes.When using nitrogen, along with the variation of gas consumption, cause the pressure of gas transmission pipeline net work to change, pressure transmitter is given frequency variator with the pressure that monitors with the form of electrical signal, and frequency variator is correspondingly controlled motor with corresponding rotational speed according to this signal.Namely when gas consumption was large, correspondingly, the pressure minimizing value of gas transmission pipeline net work was large, and then the Frequency Converter Control motor improves rotating speed, thereby increased from the air demand of compressor output, made the pressure of gas transmission pipeline net work reach setting value; When gas consumption hour, correspondingly, the force value of gas transmission pipeline net work does not but reduce or when becoming large, then the Frequency Converter Control motor reduces rotating speed, thereby reduces to make the pressure of gas transmission pipeline net work reach setting value from the air demand of compressor output.By pressure transmitter and frequency changer, can guarantee the pressure stability of gas transmission pipeline net work.
Cross low and affect the purity of nitrogen in order to prevent suction press, high pure nitrogen dedicated compressor system also comprises reflux valve 9, one end of reflux valve is connected with suction tude 4 by pipeline, and the other end of reflux valve 9 is connected on the pipeline between compressor 1 and the safety check 5 by pipeline.Automatically opening reflux valve when the pressure of suction tude is lower than setting value guides to the high pressure high pure nitrogen of compressor outlet side in the suction tude, make the pressure rise in the suction tude, autoshutdown reflux valve when the pressure in the suction tude reaches setting value, guarantee that inlet pressure is stable, thereby avoid when the too small formation degree of vacuum of the pressure on suction tude air to enter the purity that affects nitrogen in the pipeline from the joint of pipeline.Adopt the structure of reflux valve, guaranteed further the purity of nitrogen.
The employings such as the related air delivery valve of the utility model, atmospheric valve be to fill valve on bottle pipeline for nitrogen, this technical term defines according to the function of valve, also can adopt other technical term.Above-described embodiment is preferred embodiment of the present utility model only, is not to limit according to this protection domain of the present utility model, so: all equivalences of doing according to structure of the present utility model, shape, principle change, and all should be covered by within the protection domain of the present utility model.
Claims (3)
1. high pure nitrogen dedicated compressor system, comprise the compressor by driven by motor, atmospheric valve, air delivery valve, the pipe network of supplying gas, the suction tude that supplies nitrogen to pass into, described suction tude is connected with the inlet end pipeline of described compressor, one end of described air delivery valve is connected with the outlet side pipeline of described compressor, the described air delivery valve the other end is connected with the described pipe network pipeline of supplying gas, it is characterized in that: also comprise safety check, described safety check is on the pipeline between air delivery valve and the compressor, and an end of described atmospheric valve is connected on the pipeline between described safety check and the air delivery valve by pipeline.
2. high pure nitrogen dedicated compressor according to claim 1 system, it is characterized in that: also comprise pressure transmitter for detection of gas transmission pipeline net work pressure, be used for controlling the frequency variator of described motor speed, described motor is electrically connected with power supply by described frequency variator, and described pressure transmitter provides signal for the rotating speed of the described motor of described Frequency Converter Control.
3. high pure nitrogen dedicated compressor according to claim 1 system, it is characterized in that: also comprise reflux valve, one end of described reflux valve is connected with described suction tude by pipeline, and the other end of described reflux valve is connected on the pipeline between compressor and the safety check by pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220456653 CN202851296U (en) | 2012-09-08 | 2012-09-08 | Special compressor system for high-purity nitrogen |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220456653 CN202851296U (en) | 2012-09-08 | 2012-09-08 | Special compressor system for high-purity nitrogen |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202851296U true CN202851296U (en) | 2013-04-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220456653 Expired - Fee Related CN202851296U (en) | 2012-09-08 | 2012-09-08 | Special compressor system for high-purity nitrogen |
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| CN (1) | CN202851296U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638904A (en) * | 2021-10-18 | 2021-11-12 | 亿昇(天津)科技有限公司 | Control method, device and system of centrifugal air compressor |
-
2012
- 2012-09-08 CN CN 201220456653 patent/CN202851296U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113638904A (en) * | 2021-10-18 | 2021-11-12 | 亿昇(天津)科技有限公司 | Control method, device and system of centrifugal air compressor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130403 Termination date: 20150908 |
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| EXPY | Termination of patent right or utility model |