CN102734588A - Double-layer pressure-balance expansion joint with monitoring device for ethylene unit - Google Patents
Double-layer pressure-balance expansion joint with monitoring device for ethylene unit Download PDFInfo
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- CN102734588A CN102734588A CN2012101846992A CN201210184699A CN102734588A CN 102734588 A CN102734588 A CN 102734588A CN 2012101846992 A CN2012101846992 A CN 2012101846992A CN 201210184699 A CN201210184699 A CN 201210184699A CN 102734588 A CN102734588 A CN 102734588A
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- corrugated pipe
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Abstract
The invention relates to a double-layer pressure-balance expansion joint with a monitoring device for an ethylene unit, which comprises a corrugated pipe with an inner layer and an outer layer, an alarm monitoring device, connecting flanges and a flow guide cylinder, wherein the outer wall of the middle part of the flow guide cylinder is provided with the corrugated pipe with the inner and outer layers, one end of the corrugated pipe with the inner and outer layers is provided with the alarm monitoring device; the connecting flanges are arranged outside both ends of the flow guide cylinder; the flow guide cylinder is a detachable continuous structure; and the alarm monitoring device is connected with a nitrogen gas joint and an interlayer pressure detection meter. The invention has the advantage of scientific and reasonable design; by matching the double-layer corrugated pipe structure with the alarm device, the failure of the corrugated pipe can be predicted accurately; and after one corrugated pipe layer fails, the other corrugated pipe layer can still work normally until the device stops, thereby greatly enhancing the safety of the overall system.
Description
Technical field:
The present invention relates to pressure-balancing type expansion joint technical field, be specifically related to a kind of ethylene unit with bilayer zone supervisory device pressure-balancing type expansion joint.
Background technique:
Gas compressor is that gas is compressed at the application and the development gas compressor of petrochemical industry, produces the equipment of gas compression ability.The purpose that gas is compressed is conveying gas or is the necessary condition of chemical reaction creation.Gas compressor is the key equipment of petrochemical equipment, and most of petrochemical equipment all has gas compressor.General commonly used have centrifugal compressor, reciprocal compressor, a screw compressor etc.Most of compressor fed sheet of a media are oil mixed gas, rock gas, nitrogen, hydrogen, oxygen, chlorine, methane, ethene, propylene, ammonia, nitrogen dioxide etc.
Number of compressors in the ethene complete production device is maximum, and in the past few years, the petrochemical iy produced scale constantly enlarges both at home and abroad, and the trend that compressor maximizes is fairly obvious.The expansion joint that is applied to ethylene unit is installed in key position usually, and in a single day this expansion joint lost efficacy, and whole device must stop, and will cause great influence to production.
Summary of the invention:
The purpose of this invention is to provide a kind of ethylene unit with bilayer zone supervisory device pressure-balancing type expansion joint; Its design science is reasonable; Adopt the double-ply bellows structure, cooperate warning device can accurately predict the inefficacy of bellows, after one deck bellows lost efficacy; Another layer bellows still can stop by the proper functioning auto levelizer, promotes the Security of whole system greatly.
In order to solve the existing problem of background technique; The present invention adopts following technological scheme: two-layer bellows, alarm monitoring device, adpting flange and guide shell inside and outside it includes; The middle part outer wall of guide shell be provided with one have inside and outside two-layer bellows; An end of two-layer bellows is provided with the alarm monitoring device inside and outside having, and the two ends outer installment of guide shell has adpting flange.
Described guide shell is dismountable elongated structure.
Described alarm monitoring device detects table with nitrogen joint, interlayer pressure and is connected.
The bellows that adopts among the present invention is a double layer construction, and individual layer can bear design pressure; During duplex, every section bellows should provide interlayer pressure alarm monitoring device; Nitrogen joint and interlayer pressure detection table and root valve are provided; Joint is 1/2 "-3000# is threaded.
Design science of the present invention is reasonable, adopts the double-ply bellows structure, cooperates warning device can accurately predict the inefficacy of bellows, and after one deck bellows lost efficacy, another layer bellows still can stop by the proper functioning auto levelizer, promotes the Security of whole system greatly.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Embodiment:
With reference to Fig. 1; This embodiment adopts following technological scheme: two-layer bellows 1, alarm monitoring device 2, adpting flange 3 and guide shell 4 inside and outside it includes; The middle part outer wall of guide shell 4 be provided with one have inside and outside two-layer bellows 1; An end of two-layer bellows 1 is provided with alarm monitoring device 2 inside and outside having, and the two ends outer installment of guide shell 4 has adpting flange 3.
Described guide shell 4 is dismountable elongated structure.
Described alarm monitoring device 2 detects table with nitrogen joint, interlayer pressure and is connected.
The bellows that adopts in this embodiment is a double layer construction, and individual layer can bear design pressure; During duplex, every section bellows should provide interlayer pressure alarm monitoring device; Nitrogen joint and interlayer pressure detection table and root valve are provided; Joint is 1/2 "-3000# is threaded.
This embodiment design science is reasonable; Adopt the double-ply bellows structure, cooperate warning device can accurately predict the inefficacy of bellows, after one deck bellows lost efficacy; Another layer bellows still can stop by the proper functioning auto levelizer, promotes the Security of whole system greatly.
Claims (3)
1. ethylene unit is with bilayer zone supervisory device pressure-balancing type expansion joint; It is characterized in that it include inside and outside two-layer bellows (1), alarm monitoring device (2), adpting flange (3) and guide shell (4); The middle part outer wall of guide shell (4) be provided with one have inside and outside two-layer bellows (1); An end of two-layer bellows (1) is provided with alarm monitoring device (2) inside and outside having, and the two ends outer installment of guide shell (4) has adpting flange (3).
2. ethylene unit according to claim 1 is characterized in that with bilayer zone supervisory device pressure-balancing type expansion joint described guide shell (4) is dismountable elongated structure.
3. ethylene unit according to claim 1 is characterized in that with bilayer zone supervisory device pressure-balancing type expansion joint described alarm monitoring device (2) detects table with nitrogen joint, interlayer pressure and is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101846992A CN102734588A (en) | 2012-06-07 | 2012-06-07 | Double-layer pressure-balance expansion joint with monitoring device for ethylene unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012101846992A CN102734588A (en) | 2012-06-07 | 2012-06-07 | Double-layer pressure-balance expansion joint with monitoring device for ethylene unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102734588A true CN102734588A (en) | 2012-10-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012101846992A Pending CN102734588A (en) | 2012-06-07 | 2012-06-07 | Double-layer pressure-balance expansion joint with monitoring device for ethylene unit |
Country Status (1)
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| CN (1) | CN102734588A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486392A (en) * | 2013-09-30 | 2014-01-01 | 江苏百新波纹管有限公司 | Direct burial inside and outside pressure automatic alarming bellow expansion joint |
| CN105156826A (en) * | 2015-09-29 | 2015-12-16 | 江苏广通管业制造有限公司 | Expansion joint with function of warning |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB904266A (en) * | 1960-06-15 | 1962-08-29 | Zallea Brothers | Improvements in expansion joints |
| CN2338585Y (en) * | 1998-08-18 | 1999-09-15 | 南京晨光东螺波纹管有限公司 | Corrugated compensation arrangement with alarming device |
| CN201382232Y (en) * | 2009-04-03 | 2010-01-13 | 北京兴达波纹管有限公司 | Tension bar dual-layer corrugated compensator with detection connectors |
| CN201462306U (en) * | 2009-07-28 | 2010-05-12 | 石家庄巨力科技有限公司 | High temperature resistant anti-explosion auto-alarm corrugated compensator capable of being monitored |
| CN201561231U (en) * | 2009-12-17 | 2010-08-25 | 南京晨光东螺波纹管有限公司 | Alarm expansion joint of high pressure circulating gas pipeline |
| CN202733294U (en) * | 2012-06-07 | 2013-02-13 | 南通曙光波纹管制造有限公司 | Double-deck pressure-balanced type expansion joint with monitoring device of ethylene unit |
-
2012
- 2012-06-07 CN CN2012101846992A patent/CN102734588A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB904266A (en) * | 1960-06-15 | 1962-08-29 | Zallea Brothers | Improvements in expansion joints |
| CN2338585Y (en) * | 1998-08-18 | 1999-09-15 | 南京晨光东螺波纹管有限公司 | Corrugated compensation arrangement with alarming device |
| CN201382232Y (en) * | 2009-04-03 | 2010-01-13 | 北京兴达波纹管有限公司 | Tension bar dual-layer corrugated compensator with detection connectors |
| CN201462306U (en) * | 2009-07-28 | 2010-05-12 | 石家庄巨力科技有限公司 | High temperature resistant anti-explosion auto-alarm corrugated compensator capable of being monitored |
| CN201561231U (en) * | 2009-12-17 | 2010-08-25 | 南京晨光东螺波纹管有限公司 | Alarm expansion joint of high pressure circulating gas pipeline |
| CN202733294U (en) * | 2012-06-07 | 2013-02-13 | 南通曙光波纹管制造有限公司 | Double-deck pressure-balanced type expansion joint with monitoring device of ethylene unit |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103486392A (en) * | 2013-09-30 | 2014-01-01 | 江苏百新波纹管有限公司 | Direct burial inside and outside pressure automatic alarming bellow expansion joint |
| CN105156826A (en) * | 2015-09-29 | 2015-12-16 | 江苏广通管业制造有限公司 | Expansion joint with function of warning |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121017 |