CN2260306Y - New type pressure-testing device for floating-head exchanger - Google Patents
New type pressure-testing device for floating-head exchanger Download PDFInfo
- Publication number
- CN2260306Y CN2260306Y CN 96209830 CN96209830U CN2260306Y CN 2260306 Y CN2260306 Y CN 2260306Y CN 96209830 CN96209830 CN 96209830 CN 96209830 U CN96209830 U CN 96209830U CN 2260306 Y CN2260306 Y CN 2260306Y
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- China
- Prior art keywords
- pressure testing
- sealing ring
- heat exchanger
- pressure
- head
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- Expired - Fee Related
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Abstract
The utility model relates to a novel pressure-testing device for a floating-head exchanger, wherein, a pressure-testing sealing head is connected with an exchanger by a plurality of support lugs which are made into one unit with the pressure-testing sealing head. Sealing rings are arranged on the pressure-testing sealing head and the interface section of the casing of the exchanger. When pressure test is high, U-shaped pressure plates can be additionally arranged between the support lugs for reinforcing. The combining face of the inner wall of the pressure-testing sealing head and the circumference of a pipe plate on a floating end adopt a plurality of charging seal rings for adapting to the needs of the exchangers of different specifications. An annular pressure plate on the fixing end of the exchanger is changed into a plurality of L-shaped pressure plate which are evenly distributed for fastening the pipe plate on the fixed end. The utility model has the advantages of simple structure, light weight, good versatility, and convenient operation.
Description
The utility model relates to a kind of device of movable tube sheets heat exchanger maintenance on-site voltage-measuring.
Movable tube sheets heat exchanger is the more a kind of heat-exchange apparatus of industry use such as petrochemical industry.This equipment in use needs maintenance, and wherein pressure testing checks that promptly whether the heat exchanger tube side leaks is its groundwork.Present employed movable tube sheets heat exchanger pressure testing device is to be made of annular pressing plate, pressure testing head and sealing ring.Its operation principle is as follows: through pressurising, sealing ring produces the self sealss effect, voltage stabilizing when pressure test pressure reaches setting, and whether the faying face of observing between heat exchanger core pipe and core tube and tube plate leaks.There is following deficiency in this pressure testing device: (a) because the nominal pressure of heat exchanger flange is different and employed flange standard (using three kinds of standards at present) difference, the bolt quantity of housing two end flanges, the diameter of bolt and screw centre-to-centre spacing are all inequality, thereby make the versatility of this device relatively poor.(b) because the length difference (being generally 90-260mm) that the heat exchanger floating head end stretches out must have the pressure testing head of multiple length specification for satisfying the demand.(c) because pressure testing device is to use flange connection, its integral body is comparatively heavy, needs during operation to cooperate with crane gears such as cranes, and both inconvenience was also uneconomical.
The purpose of this utility model is to overcome the deficiencies in the prior art, has designed a kind of in light weight, highly versatile, the easy to operate novel pressure testing device of movable tube sheets heat exchanger.
The design concept of novel pressure testing device of the present utility model is to realize that like this (a) for alleviating the weight of pressure testing device end socket, is designed to the journal stirrup connected mode with pressure testing head, and it is individual that the quantity of its journal stirrup can be 2 or 2 * n (n is a positive integer).For satisfying the needs that Floating Head Flange screw centre-to-centre spacing changes, the connecting hole of journal stirrup is designed to radially Long Circle.(b) for reducing the holding capacity of journal stirrup, and the internal diameter of flange seal ring is designed to the heat exchanger shell internal diameter basic identical, to reduce the axial bearing area of pressure testing head.(c) when pressure test pressure is too high, pressure testing head connects except that using journal stirrup with the floating head end flanges, sets up the plurality of U-shaped jig again and reinforces.This connecting mode is suitable for any pressure rank of pressure testing, and versatility is good, has reached the purpose that alleviates pressure testing head weight.(d) the pressure testing head inwall adopts the design of multiple tracks pressurising sealing ring with floating head end tube sheet faying face, improved the adaptability (generally use four pressurising sealing rings, so only with the pressure testing head of two kind length specifications can satisfy the demand) of pressure testing head to floating head end flanges extension elongation.(e) annular pressing plate of heat exchanger stiff end changes the L shaped pressing plate of equally distributed polylith into.Adopt above-mentioned method for designing to make pressure testing head have versatility completely, make its weight ratio original structure reduce 40%-60% simultaneously, both alleviated weight, also have versatility, easy to operate, simple in structure.
Figure of description 1 is the movable tube sheets heat exchanger pressure testing device of prior art, the movable tube sheets heat exchanger pressure testing device that accompanying drawing 2 designs for the utility model, and accompanying drawing 3 is the side view of pressure testing head.
Specify the embodiment of the novel pressure testing device of movable tube sheets heat exchanger of the present utility model in conjunction with the accompanying drawings.
Embodiment one
The pressure testing device of movable tube sheets heat exchanger normally as shown in Figure 1, the pressure testing head (1) of the floating head end of heat exchanger is to be connected with floating head end flanges (3) by cover flange (2), at the middle part of adpting flange interface annular sealing surface sealing ring (4) is housed, the inwall of pressure testing head (1) is equipped with a pressurising sealing ring (6) with the annular sealing surface of floating head end tube sheet (5) circumference, and the stiff end of heat exchanger is closely connecting and composing by the annular pressing plate (10) that is fixed end tube sheet (9) and stiff end flange (11).Improvement project on this basis is as Fig. 2 or shown in Figure 3,2 * n (n be positive integer) the individual journal stirrup (12) of cover flange (2) with design replaced, sealing ring (4) is located on the sealing joint face of the housing of pressure testing head (1) and heat exchanger shell (18), the pressurising sealing ring that pressurising sealing ring (6) on the peripheral annular sealing surface that the inwall and the floating head of pressure testing head (1) are held tube sheet (5) changes by more than one parallel example replaces, corresponding with each pressurising sealing ring (6) is equalizer valve (8), can symmetry set up with the fastening U-shaped pressing plate (14) of jackscrew (13) between each journal stirrup (12).The stiff end of heat exchanger is provided with the L shaped pressing plate (17) that is fixed end tube sheet (9) more than 1.
Embodiment 2
As the technical scheme of the movable tube sheets heat exchanger pressure testing device of embodiment one, the quantity of journal stirrup wherein (12) can be 2,4,6,8, preferably 4; Pressurising sealing ring (6) wherein can be 2-8 with the number of corresponding equalizer valve (8), preferably 4; Heat exchanger stiff end wherein is provided with a plurality of uniform L shaped pressing plates (17) and is used to be fixed end tube sheet (9), and L shaped pressing plate (17) is fastening by fastening bolt (15) and stiff end flange (11), and regulates its angle with jackscrew (16).
Claims (5)
- The movable tube sheets heat exchanger pressure testing device be the floating head end of heat exchanger with pressure testing head (1) by cover flange (2) with raise the nose above water to breathe end flanges (3) and be connected, sealing ring (4) is housed at the middle part of flange annular, on the annular sealing surface of the inwall of pressure testing head (1) and floating head end tube sheet (5) circumference a pressurising sealing ring (6) is housed, shell side equalizer valve (7) and sealing ring equalizer valve (8) are respectively the shell side of heat exchanger and the equalizer valve of sealing ring (6); The stiff end of heat exchanger is closely connecting and composing by the annular pressing plate (10) that is fixed end tube sheet (9) and stiff end flange (11), it is characterized in that cover flange (2) is wherein replaced by 2 * n (n is a positive integer) individual journal stirrup (12), be provided with sealing ring (4) at the housing of pressure testing head (1) and the interface of heat exchanger shell (18), pressurising sealing ring (6) on the peripheral annular sealing surface that the inwall and the floating head of pressure testing head (1) are held tube sheet (5) is the pressurising sealing ring replacement by an above parallel example, corresponding with each pressurising sealing ring is equalizer valve (8), can symmetry set up with the fastening u shape pressing plate (14) of jackscrew (13) between each journal stirrup (12); The stiff end of heat exchanger is provided with the L shaped pressing plate (17) that is fixed end tube sheet (9) more than 1.
- 2. pressure testing device as claimed in claim 1 is characterized in that the number of journal stirrup (12) wherein can be 2,4,6,8, preferably 4.
- 3. pressure testing device as claimed in claim 1 is characterized in that the number of wherein pressurising sealing ring (6) and corresponding equalizer valve (8) can be 2-8, preferably 4.
- 4. pressure testing device as claimed in claim 1 is characterized in that the heat exchanger stiff end is provided with a plurality of uniform L shaped pressing plates (17) that are fixed end tube sheet (9).
- 5. pressure testing device as claimed in claim 1 is characterized in that L shaped pressing plate (17) wherein is to be connected with the stiff end flange by fastening bolt (15), and is provided with the adjusting jackscrew (16) that can regulate pressing plate (17) angle at the opposite side of L shaped pressing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96209830 CN2260306Y (en) | 1996-05-06 | 1996-05-06 | New type pressure-testing device for floating-head exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96209830 CN2260306Y (en) | 1996-05-06 | 1996-05-06 | New type pressure-testing device for floating-head exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2260306Y true CN2260306Y (en) | 1997-08-20 |
Family
ID=33893345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96209830 Expired - Fee Related CN2260306Y (en) | 1996-05-06 | 1996-05-06 | New type pressure-testing device for floating-head exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2260306Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353251A (en) * | 2013-07-29 | 2013-10-16 | 张家港化工机械股份有限公司 | Fixed connecting structure between tube plate and shell pass cylinder during pressure test |
-
1996
- 1996-05-06 CN CN 96209830 patent/CN2260306Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103353251A (en) * | 2013-07-29 | 2013-10-16 | 张家港化工机械股份有限公司 | Fixed connecting structure between tube plate and shell pass cylinder during pressure test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C57 | Notification of unclear or unknown address | ||
| DD01 | Delivery of document by public notice |
Addressee: Daqing Petrochemical Machinery Factory Document name: Notice of termination |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |