CN204042307U - A kind of compensator of stable metal bellows - Google Patents
A kind of compensator of stable metal bellows Download PDFInfo
- Publication number
- CN204042307U CN204042307U CN201420523303.7U CN201420523303U CN204042307U CN 204042307 U CN204042307 U CN 204042307U CN 201420523303 U CN201420523303 U CN 201420523303U CN 204042307 U CN204042307 U CN 204042307U
- Authority
- CN
- China
- Prior art keywords
- pipe
- compensator
- end working
- bellows
- working pipe
- Prior art date
- 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.)
- Active
Links
Abstract
The utility model discloses a kind of compensator of stable metal bellows, comprise the compensator be arranged in movable end working pipe and fixed end working pipe, be characterized in that described movable end working pipe is provided with graduated ring; Described sleeve pipe one end and graduated ring are slidably connected, and its other end is fixedly connected with fixed end working pipe; Described locking framework is made up of adjusting screw and support, and adjusting screw and support are fixedly connected with movable end working pipe with sleeve pipe respectively.The utility model compared with prior art has the compensation rate according to medium temperature and the initial thermal stretching of ambient temperature accurate lock metal bellows, the continuation of restriction bellows after initial thermal stretching is expanded, better avoid the concussion of bellows, effectively prevent compensator bellows in heat supply network from too early fatigue ruption occurring, structure is simple, make, easy for installation, greatly improve safe operation and the economic benefit of pipe network.
Description
Technical field
The utility model relates to heat distribution pipe network technical field, especially a kind of compensator eliminating the stable metal bellows of concussion.
Background technique
Metal corrugated expension joint because of the various excellent moral character that it has, has been used widely since coming out in heat distribution pipe network.Heat distribution pipe network medium temperature and environment have notable difference, and the temperature of industrial steam is greatly about 180 DEG C of-300 DEG C of intervals, and the temperature of under ground piping surrounding soil is greatly about about 20 DEG C.The pipeline mainly normal carbon steel pipeline of conveying thermal medium, steel pipe has expansion and contraction property, needs to be processed to the harmomegathus of pipeline in pipe network, and metal corrugated expension joint is exactly be widely used in absorb the flexible loading amount of steel pipe.
In heat supply network, the temperature of pipeline not to work or duration of work does not equal ambient temperature at heat supply network, and at heat supply network duration of work, heat-net-pipeline temperature equals pipe medium temperature, and pipe medium temperature changes a temperature range.Heat supply network is transformed into the process of working state by non-working state, and first the pipe temperature of heat supply network is risen to the lower limit of medium temperature by ambient temperature, and then pipe temperature continues to rise, and changes to high and low in an interval with medium temperature.Once completed by the transformation of ambient temperature to medium lower limit temperature, during heat supply network continuous firing no longer repeatedly, and medium temperature may fluctuate continually in upper and lower temperature range, and medium temperature changes, cause pipeline extension, make the bellows of compensator be elongated or compress.Metal bellows is manufactured by high-quality steel, has good deformability, but is out of shape continually and still can causes bellows metal fatigue.This factor causes metal corrugated expension joint usually to terminate working life early than heat supply network, the maintenance cost of heat supply network is remained high, the replacing of compensator not only costly also affects the safe operation of heat supply network, therefore how to avoid metal corrugated expension joint generation fatigue ruption tool to have very important significance.
Model utility content
The purpose of this utility model is the compensator of a kind of stable metal bellows designed for the deficiencies in the prior art, adopt the graduated ring in movable end working pipe and locking structure, only there is the compensation rate of initial deformation in accurate lock metal bellows, the compensation of restriction bellows after initial thermal stretching, the continuation of bellows after working steel tube reaches initial thermal stretching is stoped to be stretched, metal bellows is made frequent fluctuation not to occur, effectively prevent compensator bellows in heat supply network from too early fatigue ruption occurring, greatly extend the working life of bellows.
The purpose of this utility model is achieved in that a kind of compensator of stable metal bellows, comprise the compensator be arranged in movable end working pipe and fixed end working pipe, compensator is made up of locking framework and the metal bellows be arranged in sleeve pipe, be characterized in that described movable end working pipe is provided with graduated ring, graduated ring and movable end working pipe are for being fixedly connected with; Described sleeve pipe one end and graduated ring are for being slidably connected, and its other end and fixed end working pipe are for being fixedly connected with; Described metal bellows one end and movable end working pipe port are for being fixedly connected with, and its other end and sleeve pipe are for being fixedly connected with; Described locking framework is made up of adjusting screw and support, and adjusting screw and support are fixedly connected with movable end working pipe with sleeve pipe respectively.
The utility model compared with prior art has according to medium temperature and the initial thermal stretching of ambient temperature accurate lock metal bellows, the continuation of restriction bellows after initial thermal stretching is expanded, better avoid the concussion of bellows, effectively prevent compensator bellows in heat supply network from too early fatigue ruption occurring, structure is simple, make, easy for installation, improve further safe operation and the economic benefit of pipe network.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation;
Fig. 2 is the utility model using state schematic diagram.
Embodiment
Accompanying drawings 1, the utility model is made up of the compensator 3 be arranged in movable end working pipe 1 and fixed end working pipe 4.Described compensator 3 is made up of locking framework 31 and the metal bellows 33 be arranged in sleeve pipe 32; Described movable end working pipe 1 is provided with graduated ring 2, and graduated ring 2 and movable end working pipe 1 are for being fixedly connected with; Described sleeve pipe 32 one end and graduated ring 2 are for being slidably connected, and its other end and fixed end working pipe 4 are for being fixedly connected with; Described metal bellows 33 one end and movable end working pipe 1 port are for being fixedly connected with, and its other end and sleeve pipe 32 are for being fixedly connected with; Described locking framework 31 is made up of adjusting screw 5 and support 6, and adjusting screw 5 is fixedly connected with movable end working pipe 1 with sleeve pipe 32 respectively with support 6.
Accompanying drawings 2, the utility model first carries out pre-stretching to movable end working pipe 1 in a pre-installation, makes the metal bellows 33 of compensator 3 have a precompression.According to expansion pipe segment length L, compensator section at the lower limit t of heat supply network duration of work pipe medium temperature
2ambient temperature t when installing with heat supply network
0calculate the pre-stretching amount △ L=α × L × (t of movable end working pipe 1
2-t
0), wherein α is the coefficient of linear expansion of steel; Then on the graduated ring 2 of movable end working pipe 1, the pre compressed magnitude of control and compensation device 3 equals the pre-stretching amount △ L of movable end working pipe 1 calculating, carries out heat supply network installation after being locked by the adjusting screw 5 of locking framework 31.Heat supply network puts into operation after pipeline temperature rise thermal stretching, the end face of movable end working pipe 1 and the end contact of fixed end working pipe 4, when medium continue heat up and temperature at medium upper limiting temperature t
1with medium lower limit temperature t
2between when fluctuating, compensator 3 carries out expanding-contracting action no longer frequently, and therefore the concussion of its metal bellows 33 is eliminated, and effectively prevent the fatigue ruption of compensator 3.Medium temperature is more than t
2be elevated to t later
1, temperature t
1than lower limit temperature t
2height, than upper limiting temperature t
maxlow.The temperature difference (t
1-t
2) effect be applied in movable end working pipe 1, produce temperature stress σ=E α (t in movable end working pipe 1
1-t
2), wherein E is the Young's modulus of steel, and the stress σ produced is in the scope that steel pipe can bear.
The utility model is only when pipeline initially heats up, the thermal stretching of absorption compensation pipeline section, when pipe temperature continues to raise subsequently, movable end working pipe 1 end face and the fixed end working pipe 4 of compensator 3 are touched, now, when pipeline temperature rise and temperature variation, no longer there is the change of extending phenomenon and elongation in compensator 3.There is initial deformation in metal bellows 33, after this medium temperature change, metal bellows 33 is failure to actuate.Therefore there is not frequent fluctuation in metal bellows 33, is able to obvious prolongation working life.
More than just be further described the utility model, and be not used to limit this patent, all be the utility model equivalence enforcement, within the right that all should be contained in this patent.
Claims (1)
1. the compensator of a stable metal bellows, comprise the compensator (3) be arranged in movable end working pipe (1) and fixed end working pipe (4), compensator (3) is made up of locking framework (31) and the metal bellows (33) be arranged in sleeve pipe (32), it is characterized in that described movable end working pipe (1) is provided with graduated ring (2), graduated ring (2) and movable end working pipe (1) are for being fixedly connected with; Described sleeve pipe (32) one end and graduated ring (2) are for being slidably connected, and its other end and fixed end working pipe (4) are for being fixedly connected with; Described metal bellows (33) one end and movable end working pipe (1) port are for being fixedly connected with, and its other end and sleeve pipe (32) are for being fixedly connected with; Described locking framework (31) is made up of adjusting screw (5) and support (6), and adjusting screw (5) is fixedly connected with movable end working pipe (1) with sleeve pipe (32) respectively with support (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420523303.7U CN204042307U (en) | 2014-09-12 | 2014-09-12 | A kind of compensator of stable metal bellows |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420523303.7U CN204042307U (en) | 2014-09-12 | 2014-09-12 | A kind of compensator of stable metal bellows |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204042307U true CN204042307U (en) | 2014-12-24 |
Family
ID=52242971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420523303.7U Active CN204042307U (en) | 2014-09-12 | 2014-09-12 | A kind of compensator of stable metal bellows |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204042307U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323148A (en) * | 2016-09-29 | 2017-01-11 | 马鞍山钢铁股份有限公司 | Compensator deformation visualizing apparatus |
| CN110146261A (en) * | 2019-04-10 | 2019-08-20 | 中国电力科学研究院有限公司 | A kind of high-voltage combined electrical apparatus telescopic joint cycle life test method and system |
| CN110230744A (en) * | 2019-04-03 | 2019-09-13 | 上海科华热力管道有限公司 | A kind of steam pipe network thermal compensation structure |
-
2014
- 2014-09-12 CN CN201420523303.7U patent/CN204042307U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106323148A (en) * | 2016-09-29 | 2017-01-11 | 马鞍山钢铁股份有限公司 | Compensator deformation visualizing apparatus |
| CN110230744A (en) * | 2019-04-03 | 2019-09-13 | 上海科华热力管道有限公司 | A kind of steam pipe network thermal compensation structure |
| CN110146261A (en) * | 2019-04-10 | 2019-08-20 | 中国电力科学研究院有限公司 | A kind of high-voltage combined electrical apparatus telescopic joint cycle life test method and system |
| CN110146261B (en) * | 2019-04-10 | 2022-12-09 | 中国电力科学研究院有限公司 | Method and system for testing cycle life of expansion joint for high-voltage combined electrical appliance |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204042307U (en) | A kind of compensator of stable metal bellows | |
| CN203431398U (en) | Stuffing box type compensator | |
| CN206943631U (en) | A kind of vacuum sealing tube telescopic with adaptive guard function | |
| CN102672026B (en) | Method for inhibiting martensite phase transformation in internal high-pressure forming of austenitic stainless steel pipe | |
| CN104154373B (en) | A kind of stabilizer of eliminating corrugated expansion joint concussion | |
| CN203309437U (en) | Novel polytetrafluoroethylene expansion joint | |
| CN105179865A (en) | Anti-overexpansion metal ripple compensator | |
| CN209725575U (en) | A kind of collocation structure with lock | |
| CN205013950U (en) | Expansion joint with elasticity suspension damping structure | |
| CN204691754U (en) | A kind of thermal stress compensator | |
| CN203322644U (en) | Movable thermal pipe | |
| CN207034484U (en) | A kind of built-in type corrugated compensation arrangement | |
| CN204692883U (en) | A kind of corrugated expansion joint | |
| CN207415938U (en) | A kind of pipeline wall thickness adjusting apparatus | |
| CN203322488U (en) | Guiding thermal pipe | |
| CN204420446U (en) | Metal composite FlexbleJoint | |
| CN203757274U (en) | Expansion joint with self-limiting structure | |
| CN201885847U (en) | Adjustable u-shaped tube pressure gauge | |
| CN205118294U (en) | Installation telescopic gate valve | |
| Leitão et al. | Thermal cracking computational analysis of a concrete arch dam | |
| CN204785263U (en) | Non -maintaining type compensator of being able to bear strong corrosion | |
| CN202419021U (en) | Ripple compensator | |
| CN204692881U (en) | Expansion joint | |
| CN203927223U (en) | Corrugated expansion joint | |
| CN203147141U (en) | Thermal deformation compensation device for sintering equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |