CN202860936U - Pressure tapping pipeline purging device - Google Patents
Pressure tapping pipeline purging device Download PDFInfo
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- CN202860936U CN202860936U CN 201220339024 CN201220339024U CN202860936U CN 202860936 U CN202860936 U CN 202860936U CN 201220339024 CN201220339024 CN 201220339024 CN 201220339024 U CN201220339024 U CN 201220339024U CN 202860936 U CN202860936 U CN 202860936U
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- air accumulator
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Abstract
A pressure tapping pipeline purging device relates to a pressure tapping system in a metallurgical system and comprises a pressure tapping pipeline, wherein one end of the pressure tapping pipeline is provided with a pressure tap; the other end of the pressure tapping pipeline is connected to a transducer; and a primary valve, a normally open electromagnetic valve and a secondary valve are arranged on the pressure tapping pipeline in sequence in a medium circulating direction. The pressure tapping pipeline purging device is characterized in that a gas storage tank is connected between the primary valve and the normally open electromagnetic valve through a normally closed electromagnetic valve and is used for purging the pressure tap in a controllable manner. Compared with the prior art, the pressure tapping pipeline purging device has the advantages as follows: after gas pressure is adjusted through the gas storage tank, compressed gas is introduced through the normally closed electromagnetic valve to realize automatic purging of the pressure tapping pipeline, so as to avoid the problem that safety accidents are easily caused by manual purging; and meanwhile, the normally open electromagnetic valve is closed during purging, so as to keep the pressure in the pressure tapping pipeline and achieve the effects of protecting the transducer and stabilizing the output of the transducer.
Description
Technical field
The utility model relates to the pressure system in the metallurgical system, refers to particularly a kind of pressure pipeline blow device that is applicable to contain the more pressure system of dust.
Background technology
In metallurgical system, owing to get the self character of source medium, when it being carried out the pressure measurement, the phenomenon of pressure line clogging often can appear in the pressure system.When stopping up appears in the pressure pipe road in the pressure system, can only utilize manually the pressure pipeline was dredged in the past.Yet operating personnel climb to and cause easily security incident when the high-altitude is dredged the pressure pipeline, and artificial dredging operation can affect the certainty of measurement of instrumentation.
The utility model content
Technical problem to be solved in the utility model just provides a kind of pressure pipeline blow device, can realize the automatic blowing to the pressure pipeline, and can guarantee the accurate measurement of measuring instrument.
For solving the problems of the technologies described above, a kind of pressure pipeline blow device that the utility model provides, comprise the pressure pipeline, one end of pressure pipeline is that pressure tappings, the other end are connected to transmitter, be provided with successively valve, normally open solenoid valve and secondary valve No. one time along the medium circulating direction on the pressure pipeline, its special feature is: be connected with air accumulator by normally closed solenoid valve between a described valve and the normally open solenoid valve, be used for controlled pressure tappings is purged.
In the technique scheme, described air accumulator comprises the air accumulator body; Be provided with Pressure gauge in the air accumulator body, be used for the pressure of purge gas in the monitoring air accumulator body; The air inlet of air accumulator body is provided with check valve, is used for preventing gas backflow; The gas outlet of air accumulator body is provided with thimble, is used for regulating the output pressure of air accumulator.
Further, the admission line of described air accumulator is provided with hand-operated valve.
In the technique scheme, the control circuit of described normally open solenoid valve and normally closed solenoid valve comprises four time relay KT1, KT2, KT3, KT4 and an auxiliary reclay K1; The normally-closed contact KT2-1 of time relay KT1 and time relay KT2 is series at the dc source two ends; The normally opened contact KT4-1 of time relay KT2 and time relay KT4 is series at the dc source two ends; The normally opened contact KT3-1 of time relay KT4 and time relay KT3 is series at the dc source two ends; Connect with the normally opened contact KT1-1 of time relay KT1 after time relay KT3 and the auxiliary reclay K1 parallel connection, be connected on the dc source two ends; The normally closed main contacts KT2-2 that often opens main contacts K1-1 and time relay KT2 of the solenoid of described normally open solenoid valve, auxiliary reclay K1 is series at the working power two ends; The normally closed main contacts KT4-2 that often opens main contacts K1-2, time relay KT4 of the solenoid of described normally closed solenoid valve, auxiliary reclay K1 and the main contacts KT3-2 that often opens of time relay KT3 are series at the working power two ends.
Compared with prior art, the beneficial effects of the utility model are: after utilizing air accumulator adjustments of gas pressure, introduce Compressed Gas through normally closed magnetic valve and realized automatic blowing to the pressure pipeline, avoided artificial purging easily to cause the problem of security incident; Simultaneously, normally open solenoid valve cuts out when purging, and has kept the pressure in the pressure pipeline, plays the effect of protecting transmitter and making its stable output.
Description of drawings
Fig. 1 is the structural representation of an embodiment of the utility model.
Fig. 2 is a kind of electric drawings of Fig. 1 embodiment.
Among the figure: 1-pressure tappings, 2-valve, 3-normally open solenoid valve, 4-secondary valve, 5-normally closed solenoid valve, 6-air accumulator (wherein: 6.1-air accumulator body, 6.2-Pressure gauge, 6.3-thimble, 6.4-check valve), 7-hand-operated valve, 8-pressure pipeline.
The specific embodiment
Below in conjunction with accompanying drawing specific embodiment of the utility model is described in further detail.
As shown in Figure 1, a kind of pressure pipeline blow device of the present utility model comprises pressure pipeline 8, and an end of pressure pipeline 8 is that pressure tappings 1, the other end are connected to transmitter.Be provided with successively valve 2, normally open solenoid valve 3 and secondary valve 4 No. one time along the medium circulating direction on the pressure pipeline 8, also be connected to sewage draining exit by arm between normally open solenoid valve 3 and the secondary valve 4.In addition, be connected with air accumulator 6 by normally closed solenoid valve 5 between valve 2 and normally open solenoid valve 3, this air accumulator 6 comprises air accumulator body 6.1, is provided with Pressure gauge 6.2 in it, is used for the pressure of monitoring air accumulator body 6.1 interior purge gas; The air inlet of air accumulator body 6.1 is provided with check valve 6.4, is used for preventing that gas backflow, gas outlet are provided with thimble 6.3, is used for regulating the output pressure of air accumulator 6.The admission line of air accumulator 6 is provided with hand-operated valve 7, but the passing into of the purge gas such as Artificial Control nitrogen or compressed air.
For realizing the automatic control of said apparatus, present embodiment has designed delay control circuit, and as shown in Figure 2, this control circuit comprises four time relay KT1, KT2, KT3, KT4 and an auxiliary reclay K1; The normally-closed contact KT2-1 of time relay KT1 and time relay KT2 is series at 24V dc source two ends; The normally opened contact KT4-1 of time relay KT2 and time relay KT4 is series at above-mentioned dc source two ends; The normally opened contact KT3-1 of time relay KT4 and time relay KT3 is series at above-mentioned dc source two ends; Connect with the normally opened contact KT1-1 of time relay KT1 after time relay KT3 and the auxiliary reclay K1 parallel connection, be connected on above-mentioned dc source two ends.In operating circuit, the normally closed main contacts KT2-2 that often opens main contacts K1-1 and time relay KT2 of the solenoid of normally open solenoid valve 3, auxiliary reclay K1 is series at 220V AC power two ends; The normally closed main contacts KT4-2 that often opens main contacts K1-2, time relay KT4 of the solenoid of normally closed solenoid valve 5, auxiliary reclay K1 and the main contacts KT3-2 that often opens of time relay KT3 also are series at above-mentioned AC power two ends.Control circuit is arranged in the switch board in control room, and other parts are installed in device context.
The operation principle of said apparatus is as follows:
Before system's operation, the time-delay that we set four time relay KT1, KT2, KT3, KT4 is respectively 24h, 1s, 1s, 5s.Wherein, it is 24h that time relay KT1 has set the time interval that purges, and the duration that time relay KT4 has set each purging is 5s;
After system brings into operation, the 24V dc source is connected, the coil of time relay KT1 is connected, through 24h, its normally opened contact KT1-1 is closed, and the coil of time relay KT3 and auxiliary reclay K1 is connected respectively, auxiliary reclay K1 often to open main contacts K1-1 closed, normally open solenoid valve 3 cuts out, simultaneously, auxiliary reclay K1 often to open main contacts K1-2 also closed.Normally open solenoid valve 3 cuts out and can avoid purge gas to enter the transmitter cause damage of equipment, maintains simultaneously the pressure in the pressure pipeline 8, makes the transmitter stable output.Behind the time-delay 1s, time relay KT3 often to open main contacts KT3-2 closed, the solenoid of normally closed solenoid valve 5 is connected, normally closed solenoid valve 5 is opened, purge gas is purged pressure tappings 1 part of pressure pipeline 8, avoid pressure pipeline 8 to stop up, and then affect the pressure metering of medium when working.When normally closed solenoid valve 5 is opened, the normally opened contact KT3-1 of time relay KT3 is also closed, the coil of time relay KT4 is connected electricly, behind 5s, the normally closed main contacts KT4-2 of time relay KT4 disconnects, the solenoid dead electricity of normally closed solenoid valve 5, normally closed solenoid valve 5 is closed, purge and finish, simultaneously, the normally opened contact KT4-1 of time relay KT4 is closed, the coil of time relay KT2 is connected, through 1s, the normally closed main contacts KT2-2 of time relay KT2 disconnects, the solenoid dead electricity of normally open solenoid valve 3, make its unlatching, at this moment all valves on the pressure pipeline 8 restPose, the normally-closed contact KT2-1 of time relay KT2 disconnects, the coil losing electricity of time relay KT1, its normally opened contact KT1-1 disconnects, the coil of time relay KT3 and auxiliary reclay K1 is dead electricity respectively, the normally opened contact KT3-1 of time relay KT3 disconnects, the coil losing electricity of time relay KT4, the normally opened contact KT4-1 of time relay KT4 disconnects, the coil losing electricity of time relay KT2, the normally-closed contact KT2-1 of time relay KT2 and normally closed main contacts KT2-2 are closed, the one-period of whole control procedure finishes, and the state that control circuit has been got back to when system brings into operation circulates, and finishes timing automatic purging.
Said process has been realized purging once every 24h, closes first normally open solenoid valve 3 in the purge, opens 5 pairs of pressure pipelines 8 of normally closed solenoid valve behind the 1s and purges, after purging 5s, normally closed solenoid valve 5 is closed, and purges to finish, normally open solenoid valve 3 is opened after finishing 1s, makes 8 normal operations of pressure pipeline.The time interval of twice purging is set by time relay KT1, can adjust as required; The duration that purges is then set by time relay KT4, and is bad such as the purging effect of 5s, but proper extension.
Core of the present utility model is to have connected air accumulator 6 by normally closed solenoid valve 5 between valve 2 of pressure pipeline 8 and normally open solenoid valve 3, has realized the automatic blowing to pressure pipeline 8, and can guarantee the accurate measurement of measuring instrument.So its protection domain is not limited to above-described embodiment.Obviously, those skilled in the art can carry out various changes and distortion to the utility model and not break away from scope and spirit of the present utility model, for example: it is described that the structure of air accumulator 6 is not limited to embodiment, adopts other conventional structure also can realize technical solution of the present invention; Control and operating circuit also are not limited to the concrete structure of above-described embodiment, as long as can realize the automatic control of normally open solenoid valve 3 and normally closed solenoid valve 5, the purging of finishing pressure pipeline 8 can wait.If these changes and distortion belong in the scope of the utility model claim and equivalent technologies thereof, then the utility model also is intended to comprise these changes and is out of shape interior.
Claims (4)
1. pressure pipeline blow device, comprise pressure pipeline (8), one end of pressure pipeline (8) is that pressure tappings (1), the other end are connected to transmitter, pressure pipeline (8) is upper to be provided with a valve (2), normally open solenoid valve (3) and secondary valve (4) successively along the medium circulating direction, it is characterized in that: be connected with air accumulator (6) by normally closed solenoid valve (5) between a described valve (2) and the normally open solenoid valve (3), be used for controlled pressure tappings (1) is purged.
2. a kind of pressure pipeline blow device according to claim 1, it is characterized in that: described air accumulator (6) comprises air accumulator body (6.1); Be provided with Pressure gauge (6.2) in the air accumulator body (6.1), be used for the pressure of the interior purge gas of monitoring air accumulator body (6.1); The air inlet of air accumulator body (6.1) is provided with check valve (6.4), is used for preventing gas backflow; The gas outlet of air accumulator body (6.1) is provided with thimble (6.3), is used for regulating the output pressure of air accumulator (6).
3. a kind of pressure pipeline blow device according to claim 2, it is characterized in that: the admission line of described air accumulator (6) is provided with hand-operated valve (7).
4. the described a kind of pressure pipeline blow device of arbitrary claim in 3 according to claim 1, it is characterized in that: the control circuit of described normally open solenoid valve (3) and normally closed solenoid valve (5) comprises four time relay KT1, KT2, KT3, KT4 and an auxiliary reclay K1; The normally-closed contact KT2-1 of time relay KT1 and time relay KT2 is series at the dc source two ends; The normally opened contact KT4-1 of time relay KT2 and time relay KT4 is series at the dc source two ends; The normally opened contact KT3-1 of time relay KT4 and time relay KT3 is series at the dc source two ends; Connect with the normally opened contact KT1-1 of time relay KT1 after time relay KT3 and the auxiliary reclay K1 parallel connection, be connected on the dc source two ends; The normally closed main contacts KT2-2 that often opens main contacts K1-1 and time relay KT2 of the solenoid of described normally open solenoid valve (3), auxiliary reclay K1 is series at the working power two ends; The normally closed main contacts KT4-2 that often opens main contacts K1-2, time relay KT4 of the solenoid of described normally closed solenoid valve (5), auxiliary reclay K1 and the main contacts KT3-2 that often opens of time relay KT3 are series at the working power two ends.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339024 CN202860936U (en) | 2012-07-13 | 2012-07-13 | Pressure tapping pipeline purging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220339024 CN202860936U (en) | 2012-07-13 | 2012-07-13 | Pressure tapping pipeline purging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202860936U true CN202860936U (en) | 2013-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220339024 Expired - Fee Related CN202860936U (en) | 2012-07-13 | 2012-07-13 | Pressure tapping pipeline purging device |
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| CN (1) | CN202860936U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132247A (en) * | 2014-07-07 | 2014-11-05 | 中国寰球工程公司 | Remote pressure tapping wire protecting device of pilot operated safety valve |
| CN104258587A (en) * | 2014-09-26 | 2015-01-07 | 安徽淮化股份有限公司 | Negative steam-adding device of vacuum equipment instrument for producing industrial urea and use method thereof |
| CN106670191A (en) * | 2017-03-09 | 2017-05-17 | 聊城信源集团有限公司 | Anti-blocking device for high-dust measuring pressure tapping pipeline |
| CN107830305A (en) * | 2017-11-07 | 2018-03-23 | 成都易态科技有限公司 | Pressure system |
| CN111520611A (en) * | 2020-05-07 | 2020-08-11 | 西安京兆电力科技有限公司 | A blowback sweeps device for measuring gas pipeline |
| CN113102396A (en) * | 2021-03-03 | 2021-07-13 | 广东韶钢工程技术有限公司 | Automatic cleaning method and system for gas pressure sampling pipe |
| CN116422449A (en) * | 2023-03-28 | 2023-07-14 | 国能河北龙山发电有限责任公司 | Control method and device for coal mill material level purging system, electronic equipment and storage medium |
-
2012
- 2012-07-13 CN CN 201220339024 patent/CN202860936U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104132247A (en) * | 2014-07-07 | 2014-11-05 | 中国寰球工程公司 | Remote pressure tapping wire protecting device of pilot operated safety valve |
| CN104132247B (en) * | 2014-07-07 | 2017-06-13 | 中国寰球工程公司 | The long-range pressure line protection device of pilot operated safety valve |
| CN104258587A (en) * | 2014-09-26 | 2015-01-07 | 安徽淮化股份有限公司 | Negative steam-adding device of vacuum equipment instrument for producing industrial urea and use method thereof |
| CN106670191A (en) * | 2017-03-09 | 2017-05-17 | 聊城信源集团有限公司 | Anti-blocking device for high-dust measuring pressure tapping pipeline |
| CN107830305A (en) * | 2017-11-07 | 2018-03-23 | 成都易态科技有限公司 | Pressure system |
| CN107830305B (en) * | 2017-11-07 | 2024-04-02 | 成都易态科技有限公司 | Pressure taking system |
| CN111520611A (en) * | 2020-05-07 | 2020-08-11 | 西安京兆电力科技有限公司 | A blowback sweeps device for measuring gas pipeline |
| CN111520611B (en) * | 2020-05-07 | 2022-08-02 | 西安京兆电力科技有限公司 | A blowback sweeps device for measuring gas pipeline |
| CN113102396A (en) * | 2021-03-03 | 2021-07-13 | 广东韶钢工程技术有限公司 | Automatic cleaning method and system for gas pressure sampling pipe |
| CN116422449A (en) * | 2023-03-28 | 2023-07-14 | 国能河北龙山发电有限责任公司 | Control method and device for coal mill material level purging system, electronic equipment and storage medium |
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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: 20130410 Termination date: 20210713 |
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| CF01 | Termination of patent right due to non-payment of annual fee |