CN202972354U - Bent pipe pressure balance expansion joint with outer guide structure - Google Patents
Bent pipe pressure balance expansion joint with outer guide structure Download PDFInfo
- Publication number
- CN202972354U CN202972354U CN 201220636803 CN201220636803U CN202972354U CN 202972354 U CN202972354 U CN 202972354U CN 201220636803 CN201220636803 CN 201220636803 CN 201220636803 U CN201220636803 U CN 201220636803U CN 202972354 U CN202972354 U CN 202972354U
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- CN
- China
- Prior art keywords
- balance
- expansion joint
- outer guide
- pipe pressure
- bellows
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
The utility model belongs to the technical field of expansion joints and provides a bent pipe pressure balance expansion joint with an outer guide structure. The bent pipe pressure balance expansion joint comprises a working corrugated pipe (2), a bend (5) and a balance corrugated pipe (12). An outer guide mechanism is arranged corresponding to the balance corrugated pipe (12). The outer guide mechanism mainly comprises a guide rod (11) and a shaft sleeve (13). The shaft sleeve is embedded in a balance right flange. One end of the guide rod (11) is fixed on a balance left flange (9). The other end of the guide rod (11) is matched with the shaft sleeve (13) in a sliding mode. The bent pipe pressure balance expansion joint with the outer guide structure solves the problem of unstability caused by increase of wave number at the balance end in the prior art, effectively increases the compensation quantity of the expansion joints, reduces rigidity and improves effects of vibration and noise reduction.
Description
Technical field
The utility model belongs to the expansion joint technical field, relates generally to a kind of bend pipe pressure balance type expansion joint with outer guide structure.
Background technique
Bend pipe pressure balance type expansion joint, by work bellows, balance bellows, elbow, pull bar, end plate, and the structural members such as ball, taper faced washer form, be mainly used in absorption axes to transverse combination displacement and expansion joint that can balance ripple pipe pressure thrust.Existing bend pipe pressure balance type expansion joint in the course of the work, work bellows two ends be connected with pipeline respectively, bellows is two fixed ends; Balance bellows one end is connected with pipeline, and an end is unsettled, and bellows is that an end props up admittedly, an end guiding.According to (A.55) formula in GB/T12777-2008, pressing in the post unstability limit design of balance bellows is 1/4 of work bellows, namely show the restriction that is subjected to column stability, the wave number of balance bellows can only be got half of work bellows, otherwise very easily produces the post unstability.Balance ripple tube wave number is less, causes the expansion joint compensation ability to reduce, and integral rigidity increases, and is unfavorable for the vibration and noise reducing of system, has increased the stressed of support of pipelines.
The model utility content
For solving the problems of the technologies described above, the purpose of this utility model is to propose a kind of bend pipe pressure balance type expansion joint with outer guide structure, the wave number increase that can solve balance bellows in prior art causes the problem of post unstability, can more wave number be set in balance end, thereby the increase compensation rate significantly reduces expansion joint rigidity.
The utility model adopts following technological scheme for completing the foregoing invention task:
A kind of bend pipe pressure balance type expansion joint with outer guide structure, described bend pipe pressure balance type expansion joint includes work bellows, elbow and balance bellows; Be connected flange welding with the left flange of balance respectively and be connected in described balance bellows two ends with balance; Corresponding described balance bellows arranges outer guide mechanism; Described outer guide mechanism mainly comprises guide rod and axle sleeve; It is inner that described axle sleeve is embedded in the right flange of balance; One end of described guide rod is fixed on the left flange of balance by fixing pin, and the other end and axle sleeve are slidably matched.
Guide rod and axle sleeve in conjunction with end face on have to fill the oil groove of high temperature resistant luboil fat or molybdenum disulphide powder.
Said structure in use, guide rod can unrestricted motion vertically in axle sleeve, because the design of axle sleeve and guide rod designs according to sliding bearing, has reduced the impact of frictional force on flexibility connection pipe rigidity; When balance end produced radial displacement not due to column stability, guide rod coordinates with axle sleeve can retrain radial displacement, prevented balance end generation post unstability, can realize the movably boundary conditions of solid of balance end.
A kind of bend pipe pressure balance type expansion joint with outer guide structure that the utility model proposes, the outer guide structure that adopts guide rod and axle sleeve to be slidably matched, solved the problem that the wave number increase of balance end in the prior art causes the post unstability, when the expansion joint internal pressure raises, the balance bellows is because wave number is more, when the post unstability occured, the outer guide structure of balance end can retrain the radial displacement that the post unstability produces, and prevents balance end generation post unstability; Guide rod can be in axle sleeve motion vertically, nose balance ability that can the confined equilibrium ripple is due to the antifriction function of lubricating grease or molybdenum disulphide powder, can reduce friction on the impact of rigidity, effectively increase the compensation rate of expansion joint, reduced the rigidity of expansion joint, improved effect of vibration and noise reduction.
Description of drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the utility model structural representation of guide structure at home and abroad.
In figure: 1, the left flange of working, 2, the work bellows, 3, the right flange of working, 4, the left flange of elbow, 5, elbow, 6, elbow', 7, large pull bar, 8, the right flange of elbow, 9, the left flange of balance, 10, fixing pin, 11, guide rod, 12, the balance bellows, 13, axle sleeve, 14, the right flange of balance, 15, square end socket.
Embodiment
With specific embodiment, the utility model is illustrated by reference to the accompanying drawings, still, the utility model is not limited to these embodiments.
As shown in Figure 1, a kind of bend pipe pressure balance type expansion joint with outer guide structure, described bend pipe pressure balance type expansion joint mainly include the left flange 1 of work, work bellows 2, the right flange 3 of work, the left flange 4 of elbow, elbow 5, elbow' 6, large pull bar 7, the right flange 8 of elbow, the left flange 9 of balance, balance bellows 12, the right flange 14 of balance, square end socket 15; Described work bellows 2 two ends are welded to connect with the left flange 1 of work and the right flange 3 of work respectively, and the right flange 3 of working is connected to the left side of the left flange 4 of elbow by flange bolt, and work bellows 2 is used for extraction duct axially and lateral displacement; The two ends of described balance bellows 12 are welded to connect with the left flange 9 of balance and the right flange 14 of balance respectively, and the left flange 9 of balance is connected by the right flange 8 of flange bolt and elbow, and the right flange 14 of balance is connected with square end socket 15 by flange bolt; Described balance bellows 12 is mainly used to balance pressure thrust, and the compensating axial displacement; One end of described large pull bar 7 passes the hole on the left flange 1 of work, the hole on the other end side of passing end socket 15, and large pull bar 7 two ends dress ball taper faced washers, and fix with nut, the effect of large pull bar 7 is the pressure thrusts of bearing bellows; Corresponding described balance bellows 12 arranges outer guide mechanism; In conjunction with Fig. 2, described outer guide mechanism mainly comprises guide rod 11 and axle sleeve 13; Described axle sleeve 13 is embedded in the right flange of balance 14 inside; One end of described guide rod 11 is fixed on the left flange 9 of balance by fixing pin 10, axle sleeves in the right flange of the other end and balance 14 are slidably matched, and guide rod 11 and axle sleeve 13 in conjunction with end face on have to fill the oil groove of high temperature resistant luboil fat or molybdenum disulphide powder.
Said structure in use, guide rod 11 can unrestricted motion vertically in axle sleeve 13, because the design of axle sleeve 13 and guide rod 11 designs according to sliding bearing, has reduced the impact of frictional force on flexibility connection pipe rigidity; When balance end produced radial displacement not due to column stability, axle sleeve 13 can retrain radial displacement, prevented balance end generation post unstability, can realize the movably boundary conditions of solid of balance end.
Claims (2)
1. bend pipe pressure balance type expansion joint with outer guide structure, described bend pipe pressure balance type expansion joint includes work bellows (2), elbow (5) and balance bellows (12); The two ends of described balance bellows (12) are welded to connect with the left flange of balance (9) and the right flange of balance (14) respectively; It is characterized in that: corresponding described balance bellows (12) arranges outer guide mechanism; Described outer guide mechanism mainly comprises guide rod (11) and axle sleeve (13); It is inner that described axle sleeve is embedded in the right flange of balance; One end of described guide rod (11) is fixed on the left flange of balance (9), and the other end and axle sleeve (13) are slidably matched.
2. a kind of bend pipe pressure balance type expansion joint with outer guide structure according to claim 1 is characterized in that: guide rod (11) and axle sleeve (13) in conjunction with the oil groove that has to fill high temperature resistant luboil fat or molybdenum disulphide powder on end face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636803 CN202972354U (en) | 2012-11-28 | 2012-11-28 | Bent pipe pressure balance expansion joint with outer guide structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220636803 CN202972354U (en) | 2012-11-28 | 2012-11-28 | Bent pipe pressure balance expansion joint with outer guide structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202972354U true CN202972354U (en) | 2013-06-05 |
Family
ID=48513429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220636803 Expired - Lifetime CN202972354U (en) | 2012-11-28 | 2012-11-28 | Bent pipe pressure balance expansion joint with outer guide structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202972354U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758146A (en) * | 2018-08-30 | 2018-11-06 | 江苏乾元飞达电力设备有限公司 | A kind of free-standing compact expansion joint that inlet and outlet are vertical |
-
2012
- 2012-11-28 CN CN 201220636803 patent/CN202972354U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108758146A (en) * | 2018-08-30 | 2018-11-06 | 江苏乾元飞达电力设备有限公司 | A kind of free-standing compact expansion joint that inlet and outlet are vertical |
| CN108758146B (en) * | 2018-08-30 | 2023-09-01 | 江苏乾元飞达电力设备有限公司 | Independent compact expansion joint with vertical inlet and outlet |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee after: CSSC Shuangrui (Luoyang) special equipment Co.,Ltd. Address before: 471000, Binhe Road, hi tech Development Zone, Henan, Luoyang, 32 Patentee before: LUOYANG SUNRUI SPECIAL EQUIPMENT Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130605 |
|
| CX01 | Expiry of patent term |