CN201715169U - External-compression composite balanced-type expansion joint - Google Patents
External-compression composite balanced-type expansion joint Download PDFInfo
- Publication number
- CN201715169U CN201715169U CN2010202645709U CN201020264570U CN201715169U CN 201715169 U CN201715169 U CN 201715169U CN 2010202645709 U CN2010202645709 U CN 2010202645709U CN 201020264570 U CN201020264570 U CN 201020264570U CN 201715169 U CN201715169 U CN 201715169U
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- China
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- balance
- expansion joint
- bellows
- plate
- balanced
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Abstract
An external-compression composite balanced-type expansion joint comprises a left-side compensation part, a right-side compensation part and a balanced compensation part, wherein the left-side compensation part comprises a left-side end plate, a left-side corrugated pipe, a left-side connecting pipe and a left-side annular plate; the right-side compensation part comprises a right-side end plate, a right-side corrugated pipe, a right-side connecting pipe and a right-side annular plate; and the balanced compensation part comprises a balanced corrugated pipe, a balanced connecting pipe, an outer pipe and a right-side end plate. In the utility model, the built-in manner of the external compression composite balanced type expansion joint is adopted, and a combined structure of the balanced type expansion joint is designed, the defects of larger physical dimension and occupied space of the common expansion joint are overcome, and the compensation for various deformations of a complex pipeline system is achieved. The utility model has the characteristics of compact structure, high reliability and small space occupied in the pipeline, and is convenient for installation and maintenance, and saves the cost of a device.
Description
Technical field
The utility model relates to a kind of pipe expansion joint, saves especially for the pipe expansion in the coal gasification apparatus.
Background technique
Coal Gasification Technology is a cleanest a kind of coal comprehensive utilization technique, by coal gasification apparatus and coal gasifying process, is the crude synthesis gas that contains H2 and CO with coal conversion, then as the raw material of industry, finally is processed into various chemical product.
The air-flow bed coal-gasification technology is comparatively advanced in the world at present gasification technology, it with fine coal, oxygen and a small amount of water vapor under the pressurization of pressure 4.0～6.1Mpa and 260 ℃ of conditions, and flow in the gasification oven, in the very of short duration time, finish intensification, volatile constituent removes, a series of physics and chemical processes such as cracking, burning and conversion.The key point that realizes this Coal Gasification Technology is coal gasification apparatus.Because the specific (special) requirements of coal gasifying process and technological equipment, the harsh requirement of the intersection spatial offset layout of the setting of coal gasification apparatus and process pipe, require process pipe need adopt can balance all directions pipe deforming the expansion of metal joint, to offset the distortion thrust that causes because of the process pipe deformation pressure.
In existing expansion joint structure, balanced expansion joint is divided into straight pipe pressure-equalizing type, curved tube pressure-balancing type, straight tube bypass balance type, hinge or universal balance type, big pull bar balance type usually, or the like.The compensation of these balanced expansion joints and balanced action all have narrow limitation.Adopt one group of common balanced expansion joint can only compensate the axial or horizontal physical descriptor of pipeline, compensating axial and laterally physical descriptor simultaneously.Though the curved tube balanced expansion joint can be finished axial and horizontal compensation simultaneously, this expansion joint only limits to be installed in the corner of L shaped pipeline.Coal gasifying process equipment and process pipe require expansion joint form structure volume little, and can be at the arbitrary position of pipeline compensating axial and horizontal physical deformation, and, also need this expansion joint to bear bigger operation pressure, generally may be up to 4.0～8.4Mpa, therefore, the structural strength of expansion joint is had relatively high expectations, and present external-compression universal balanced expansion joint still can not satisfy the requirement of coal gasifying process.Though the expansion joint structure that has also adopts the external-compression type structural design, but advance flange owing to adopt, cause the construction profile size bigger, requirement must leave enough spaces in the coal gasifying process pipe laying, this gives limited pipeline space setting undoubtedly and lays has increased difficulty, has strengthened craft piping technical costs and pipe laying condition.Other has some expansion joints, though can reduce the length of installation space of expansion joint, still dislikes bigger on boundary dimension, so that has occupied bigger spatial position.
The model utility content
Technical problem to be solved in the utility model is: provides a kind of and can absorb axial displacement, lateral displacement or axially horizontal compound displacement, and the external not external-compression type composite balance type expansion joint of delivery pressure thrust.
The alleged problem of the utility model is solved by following technological scheme:
A kind of external-compression type composite balance type expansion joint, it comprises left side compensated part, right side compensated part and balance compensated part, each several part constitutes:
Described left side compensated part is taken over by left side end plate, left side bellows, left side and the left side ring flat-plate is formed, wherein, the left end connecting pipeline system that the left side is taken over, the other end is fixed on the ring flat-plate of left side, described left side bellows right-hand member and left side ring flat-plate are affixed, and its left end and balance are taken over the affixed and sealing of left end;
Described right side compensated part is taken over by right side end plate, right side bellows, right side and the right side ring flat-plate is formed, wherein, the right-hand member connecting pipeline system that the right side is taken over, the other end is fixed on the ring flat-plate of right side, described right side bellows right-hand member and right side end plate are affixed, and its left end and right side ring flat-plate are affixed; Described right side ring flat-plate is the right side that balance is taken over;
Described balanced compensated part is made up of balance bellows, balance adapter, outer tube and right side end plate, wherein, the affixed and sealing of balance bellows one end and left side end plate, the affixed balance of the other end is taken over, and the right side of described outer tube is the right side end plate.
Above-mentioned external-compression type composite balance type expansion joint, described left side end plate is provided with through hole.
Above-mentioned external-compression type composite balance type expansion joint, described balance are taken over and are provided with equalizing orifice.
Above-mentioned external-compression type composite balance type expansion joint, the waveform of described left side bellows, right side bellows and balance bellows adopts " U " type, and its wall thickness is 1.0～2.0, and the number of plies is 1～8 layer.
Above-mentioned external-compression type composite balance type expansion joint, described outer tube is shaped as step-like.
The utility model adopts pressed and internally-installed form, designs the composite structure of balanced expansion joint, and it is bigger to have overcome common expansion joint boundary dimension, and the disadvantage that the position that takes up space is bigger realizes the various distortion that the complex pipeline system occurs are compensated.Test shows that the utility model can satisfy the requirement of space compensation fully, has compact structure, reliability height, takies characteristics such as the pipeline space position is little, convenient for installation and maintenance, saveall cost.According to surveying and determination, the utility model only is 1.05～1.10 times of process pipe boundary dimension in its overall sizes of ordinary circumstance, external dimension are close to least limit, the overall sizes of existing common expansion joint then is 2～2.5 times of process pipe boundary dimension, the utility model has significantly reduced external dimension, and to the performance of expansion joint without any adverse effect, this has very large Practical significance in the process pipe design and installation.What the utility model was applicable to any coal gasifying process pipeline and tooling axially, laterally reaches compound compensation requirement.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Each label list is shown among the figure: 1. left side end plate, 2. left side bellows, 3. balance bellows; 4. outer tube; 5. the left side is taken over; 6. left side ring flat-plate, 7. balance adapter; 8. equalizing orifice; 9. through hole; 11. right side end plate; 12. right side bellows; 15. the right side is taken over; 16. right side ring flat-plate.
Embodiment
Referring to Fig. 1, the utility model comprises left side compensated part, right side compensated part and balance compensated part.Described left side compensated part is made up of left side end plate 1, left side bellows 2, left side adapter 5 and left side ring flat-plate 6; Described right side compensated part is made up of right side end plate 11, right side bellows 12, right side adapter 15 and right side ring flat-plate 16; Described balanced compensated part is made up of balance bellows 3, balance adapter 7, outer tube 4 and right side end plate 11.Described balance bellows one end and the left side end plate is affixed and sealing, the affixed balance of the other end is taken over, and the right side of described outer tube is a right side end plate 11.
The utility model is provided with through hole 9 on the end plate of left side, a side of balance bellows and left side bellows is all communicated with atmosphere, is convenient to bellows when flexible " breathing ", and balance keep-ups pressure.Be provided with equalizing orifice 8 on described balance is taken over, purpose is that the opposite side of bellows is communicated with pipeline, working medium pressure balance in the holding tube.
Be step-like with the outer tube shaped design in the utility model, purpose is to reduce the overall sizes of expansion joint as far as possible, is convenient to use at small space.The effective diameter of supposing the balance bellows is D
m, left side bellows and right side bellows effective diameter be d
m, then in order to make when distortion, the variable quantity of the actual volume of both (referring to balance bellows and left side bellows+right side bellows) is identical, and then both diameters should satisfy following formula: D
m=√ 2d
m
The waveform of described left side bellows, right side bellows and balance bellows adopts " U " type, its wall thickness is 1.0～2.0, the number of plies is 1～8 layer, it is DN200～500mm that such parameter is selected to satisfy pipe diameter, working pressure is 4.0～8.4Mpa, operating temperature less than 350 ℃ working condition requirement, less than 40mm, safe operating life is greater than 3000 times less than 120mm, horizontal compensation rate for the nose balance amount.
Characteristics of the present utility model are that the minimum dimension of expansion joint working portion is identical with pipeline, make the circulation area of medium can not reduce also not have local pressure loss.Opposite by pressure thrust equal and opposite in direction, the direction of selecting suitable bellows geometric parameter to make pressure thrust that two groups of work bellowss produce and to produce with the balance bellows, this group power by balance take over, outer tube cancels out each other on left side end plate and right side ring flat-plate, thereby realize the expansion joint outside effect of delivery pressure thrust not.In other words, equilibrium swelling saves just according to pressure balance principle, Volume Changes is transformed (stretching and compression) process mutually by work bellows and balance bellows, and make the expansion joint overall volume be in constant state all the time.Realize the effect of its balance volume and pressure thrust.When being subjected to displacement distortion, suppose the left side that is connected with two pipe nipples, the right bellows 1/2 Δ X that respectively is stretched, simultaneously, also make the balance bellows be compressed Δ X, the overall structure inner space is a balance during because of design, one side is stretched or compressed Δ X, the opposing party then can provide the compensation of equivalent, exactly because the compensating action of balance bellows, and make whole pipe-line system pressure, the constancy of volume is in state of equilibrium, and the support system of expansion joint just can not be subjected to the other pressure or the effect of thrust yet like this, this deformation force in prior art often up on kiloton, have collapsing force.
Claims (5)
1. external-compression type composite balance type expansion joint is characterized in that: it comprises left side compensated part, right side compensated part and balance compensated part, and each several part constitutes:
Described left side compensated part takes over (5) by left side end plate (1), left side bellows (2), left side and left side ring flat-plate (6) is formed, wherein, the left end connecting pipeline system that the left side is taken over, the other end is fixed on the ring flat-plate of left side, described left side bellows right-hand member and left side ring flat-plate are affixed, and its left end and balance are taken over the affixed and sealing of (7) left end;
Described right side compensated part takes over (15) by right side end plate (11), right side bellows (12), right side and right side ring flat-plate (16) is formed, wherein, the right-hand member connecting pipeline system that the right side is taken over, the other end is fixed on the ring flat-plate of right side, described right side bellows right-hand member and right side end plate are affixed, and its left end and right side ring flat-plate are affixed; Described right side ring flat-plate is the right side that balance is taken over;
Described balanced compensated part is taken over (7), outer tube (4) and right side end plate (11) by balance bellows (3), balance and is formed, wherein, affixed and the sealing of balance bellows one end and left side end plate, the affixed balance of the other end is taken over, and the right side of described outer tube is right side end plate (11).
2. external-compression type composite balance type expansion joint according to claim 1 is characterized in that described left side end plate (1) is provided with through hole (9).
3. external-compression type composite balance type expansion joint according to claim 1 and 2 is characterized in that, described balance is taken over (7) and is provided with equalizing orifice (8).
4. external-compression type composite balance type expansion joint according to claim 3 is characterized in that, the waveform of described left side bellows, right side bellows and balance bellows adopts " U " type, and its wall thickness is 1.0～2.0, and the number of plies is 1～8 layer.
5. external-compression type composite balance type expansion joint according to claim 4 is characterized in that described outer tube is shaped as step-like.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202645709U CN201715169U (en) | 2010-07-21 | 2010-07-21 | External-compression composite balanced-type expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202645709U CN201715169U (en) | 2010-07-21 | 2010-07-21 | External-compression composite balanced-type expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201715169U true CN201715169U (en) | 2011-01-19 |
Family
ID=43461168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202645709U Expired - Lifetime CN201715169U (en) | 2010-07-21 | 2010-07-21 | External-compression composite balanced-type expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201715169U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818083A (en) * | 2012-09-04 | 2012-12-12 | 航天晨光股份有限公司 | Internal and external pressure mixed type straight pipe pressure balance flexible connecting pipe |
| CN106015812A (en) * | 2016-07-11 | 2016-10-12 | 洛阳双瑞特种装备有限公司 | Straight-through type external pressure straight pipe pressure balancing expansion joint with leakage monitoring function |
| CN108628352A (en) * | 2018-04-19 | 2018-10-09 | 兰州空间技术物理研究所 | A kind of solid-state working medium gasification flow automatic control device |
| CN111810754A (en) * | 2020-06-09 | 2020-10-23 | 洛阳双瑞特种装备有限公司 | Straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation |
-
2010
- 2010-07-21 CN CN2010202645709U patent/CN201715169U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102818083A (en) * | 2012-09-04 | 2012-12-12 | 航天晨光股份有限公司 | Internal and external pressure mixed type straight pipe pressure balance flexible connecting pipe |
| CN106015812A (en) * | 2016-07-11 | 2016-10-12 | 洛阳双瑞特种装备有限公司 | Straight-through type external pressure straight pipe pressure balancing expansion joint with leakage monitoring function |
| CN108628352A (en) * | 2018-04-19 | 2018-10-09 | 兰州空间技术物理研究所 | A kind of solid-state working medium gasification flow automatic control device |
| CN111810754A (en) * | 2020-06-09 | 2020-10-23 | 洛阳双瑞特种装备有限公司 | Straight pipe pressure balance type expansion joint applied to large-diameter pipeline compensation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110119 Effective date of abandoning: 20130306 |
|
| RGAV | Abandon patent right to avoid regrant |