CN201302025Y - Expansion joint with double-layered ripple and alarm device for styrene plant - Google Patents
Expansion joint with double-layered ripple and alarm device for styrene plant Download PDFInfo
- Publication number
- CN201302025Y CN201302025Y CNU200820155369XU CN200820155369U CN201302025Y CN 201302025 Y CN201302025 Y CN 201302025Y CN U200820155369X U CNU200820155369X U CN U200820155369XU CN 200820155369 U CN200820155369 U CN 200820155369U CN 201302025 Y CN201302025 Y CN 201302025Y
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- ripple
- expansion joint
- double
- pressure
- styrene
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Abstract
The utility model relates to an expansion joint with double-layered ripples and an alarm device for a styrene plant. The expansion joint comprises a body (1), an outer layer ripple and an inner layer ripple of the body (1), an alarm interface (2) installed between the outer layer and the inner layer ripples, a 0.02-0.05MPa nitrogen gas pipe line (3) connected with the alarm interface (2), a pressure gage installed on the nitrogen gas pipe line (3), and a pressure transmitter connected with the pressure gage and the outside. The utility model has the beneficial effects as follows: 1, the expansion joint can accurately predict the invalidation of the outer layer or the inner layer ripple; and 2, after the invalidation, the inner or the outer ripple can work normally till the styrene plant shuts down, thereby greatly improving the safety of the entire styrene plant.
Description
Technical field
The utility model relates to the expansion joint that uses on a kind of styrene device.
Background technique
In styrene device, dehydrogenation reaction zone is because the temperature height, and caliber is big, and requirement that the pressure drop of technological requirement is low or the like generally all will be provided with expansion of metal and save and absorb the thermal expansion that pipeline and equipment produce on pipeline.Because these expansion joints are used to the key position of device, in case expansion joint lost efficacy, whole device just must stop, and this will cause great waste and influence to production.
Double-deck corrugated expansion joint of the prior art is meant that double-deck ripple bears the internal pressure in the expansion joint jointly, and any one deck ripple lost efficacy and promptly is considered to this expansion joint inefficacy.
How to design a kind of safety in operation that promotes expansion joint, guarantee the safety of expansion joint in styrene device, and to monitor in real time in operation whether expansion joint lost efficacy be the problem that the technician will solve.
Summary of the invention
The utility model technical issues that need to address have provided the double-deck corrugated ribbon warning device of a kind of styrene device expansion joint, are intended to address the above problem.
In order to solve the problems of the technologies described above, the utility model is achieved through the following technical solutions:
The utility model comprises: body; Described body comprises outer ripple and internal layer ripple; Between outer ripple and internal layer ripple, settle a remote alarm interface; The nitrogen pipeline of a described remote alarm interface and a 0.02 ~ 0.05MPa joins; A pressure gauge is housed on described nitrogen pipeline; Described pressure gauge joins with the outside pressure transmitter that is connected with one.
Compared with prior art, the beneficial effects of the utility model are: can accurately predict the inefficacy of skin or internal layer ripple 1.; 2. after skin or the inefficacy of internal layer ripple, internal layer or outer ripple still can stop by the proper functioning auto levelizer, promote the Security of whole styrene device greatly.
Description of drawings
Fig. 1 is the utility model structural representation;
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
As seen from Figure 1: the utility model comprises: body 1; Described body 1 comprises outer ripple and internal layer ripple; Between outer ripple and internal layer ripple, settle a remote alarm interface 2; The nitrogen pipeline 3 of a described remote alarm interface 2 and a 0.02 ~ 0.05MPa joins; A pressure gauge is housed on described nitrogen pipeline 3; Described pressure gauge joins with the outside pressure transmitter that is connected with one;
Between described nitrogen pipeline 3 and body 1, settle one and take over 4; There are 2 first sealing contact welding places 41, downsides that the second sealing contact welding place 42 is arranged at the upside of taking over 4.
In the utility model each layer ripple can both bear process condition separately, be provided with 3/4 between ripple and the interior ripple outside " remote alarm interface; connect the nitrogen pipeline of 0.02 ~ 0.05MPa on the remote alarm interface; and on-the-spot pressure gauge and pressure transmitter are housed on nitrogen pipeline, pressure transmitter outputs signal to central control chamber.When the normal operation of device,, illustrate that then expansion joint does not take place to leak and destroy if the warning mouth pressure that shows in pressure gauge and the central control chamber is 0.02 ~ 0.05MPa.In case the warning mouth pressure that shows in pressure gauge and the central control chamber becomes normal pressure (0.1MPa), illustrates that then inefficacy has taken place the outer ripple of expansion joint; And the warning mouth pressure that shows in pressure gauge and central control chamber becomes negative pressure, and with expansion joint in the operation pressure of process fluid when being close, illustrate that then inefficacy has taken place the internal layer ripple of expansion joint.But because each layer ripple can both bear process condition separately, therefore for double-deck corrugated ribbon warning device expansion joint, this expansion joint still is safe, safe operation that still can assurance device.
Bellows design is the double layer construction form, and every layer of ripple all can bear pipeline working pressure and temperature.During the expansion joint operation, the logical gas different in the warning connecting tube with the pipeline pressure value, when the detected pressure of warning device was identical with pipeline pressure, applying unit can know that leakage has taken place the bellows internal layer; When the detected pressure of warning device is zero-pressure, leakage has taken place in bellows skin as can be known, and this moment, expansion joint still can normally use, and later operation should cause bigger attention but applying unit is to expansion joint, and the expansion joint that should when next time stopping, more renew, to guarantee the safe operation of system.
Use the utility model can solve the problem that prior art exists well: first, even the internal layer of expansion joint (or outer) ripple leaks, outer (or internal layer) ripple still can guarantee to stop when expansion joint moves to overhaul safely, and need not stop at once; Second, the signal that provides according to the warning device in the expansion joint, whether the ripple that operator just can in time understand expansion joint at central control chamber leaks and damages, in case find to leak, because outer (or internal layer) ripple can guarantee that still expansion joint moves safely, can in time order acknowledgment copy to the expansion joint MANUFACTURER this moment, newer acknowledgment copy changed when waiting full factory to stop.
Claims (2)
1. a styrene device comprises: body (1) with double-deck corrugated ribbon warning device expansion joint; Described body (1) comprises outer ripple and internal layer ripple; It is characterized in that: between outer ripple and internal layer ripple, settle a remote alarm interface (2); The nitrogen pipeline (3) of a described remote alarm interface (2) and a 0.02 ~ 0.05MPa joins; A pressure gauge is housed on described nitrogen pipeline (3); Described pressure gauge joins with the outside pressure transmitter that is connected with one.
2. styrene device according to claim 1 is characterized in that: settle an adapter (4) between described nitrogen pipeline (3) and body (1) with double-deck corrugated ribbon warning device expansion joint; There are 2 first sealing contact welding places (41), downsides that the second sealing contact welding place (42) is arranged at the upside of taking over (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820155369XU CN201302025Y (en) | 2008-11-14 | 2008-11-14 | Expansion joint with double-layered ripple and alarm device for styrene plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200820155369XU CN201302025Y (en) | 2008-11-14 | 2008-11-14 | Expansion joint with double-layered ripple and alarm device for styrene plant |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201302025Y true CN201302025Y (en) | 2009-09-02 |
Family
ID=41085651
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200820155369XU Expired - Lifetime CN201302025Y (en) | 2008-11-14 | 2008-11-14 | Expansion joint with double-layered ripple and alarm device for styrene plant |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201302025Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559527A (en) * | 2017-09-10 | 2018-01-09 | 江苏永力管道有限公司 | The combined sleeve compensator and its intelligent management system of warning device are set |
-
2008
- 2008-11-14 CN CNU200820155369XU patent/CN201302025Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107559527A (en) * | 2017-09-10 | 2018-01-09 | 江苏永力管道有限公司 | The combined sleeve compensator and its intelligent management system of warning device are set |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee after: SINOPEC Shanghai Engineering Company Limited Patentee after: Sinopec Corp. Co-patentee after: Nanjing Chenguang Dongluo Bellow Co., Ltd. Address before: 100728 Beijing, Chaoyangmen, North Street, No. 22, No. Co-patentee before: Sinopec Shanghai Engineering Co., Ltd. Patentee before: Sinopec Corp. Co-patentee before: Nanjing Chenguang Dongluo Bellow Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090902 |