CN203131304U - Spherical shell type universal angle expansion joint - Google Patents
Spherical shell type universal angle expansion joint Download PDFInfo
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- CN203131304U CN203131304U CN 201320135076 CN201320135076U CN203131304U CN 203131304 U CN203131304 U CN 203131304U CN 201320135076 CN201320135076 CN 201320135076 CN 201320135076 U CN201320135076 U CN 201320135076U CN 203131304 U CN203131304 U CN 203131304U
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- spherical shell
- expansion joint
- spherical
- bellows
- universal angle
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Abstract
The utility model relates to a spherical shell type universal angle expansion joint, and belongs to the technical field of fluid conveying pipelines. The expansion joint comprises a first connecting pipe and a second connecting pipe which are communicated with each other; a first ring-shaped standing plate and a second ring-shaped standing plate radially extend out of the excircles of the first connecting pipe and the second connecting pipe respectively; a first outer pipe and a second outer pipe relatively and axially extend out from the first ring-shaped standing plate and the second ring-shaped standing plate respectively; and corrugated tubes or spherical hinge structures which are formed by assembling hollow spheres and spherical shells in a matching manner are connected between the first connecting pipe and the second connecting pipe as well as the first outer pipe and the second outer pipe. The expansion joint provided by the utility model has the significant advantages of strong bearing capacities of different directions, good pressure-bearing leak tightness, safety, reliability, flexibly in rotary motion, compact structure and wide application range.
Description
Technical field
The utility model relates to a kind of universal angle expansion joint, and the universal angle of especially a kind of spherical shell formula expansion joint belongs to the fluid delivery pipeline technical field.
Background technique
Universal angle expansion joint can absorb any direction angular displacement, the combination of the universal angle expansion joint more than two can absorb the displacement of pipeline any direction and bear the axial pressure thrust that bellows produces, therefore as pipeline fittings, be widely used in the pipe-line system of industries such as petrochemical industry, metallurgy, electric power, heat supply network.
Existing this series products mainly contains two kinds, and a kind of is the universal angle of the single-piece expansion joint (referring to GB/T12777-2008) of similar universal joint cross, mainly is made of rectangle or circular cardo ring, bearing pin, hinge etc.Another kind is the spherical compensating joint (referring to GB/T12465) of the stuffing box formula of similar ball pivot head, mainly be made of spherical shell, spheroid, gland and seal ring etc., application number is that 85201754.5,200520092938.7,200720307200.7 Chinese patent application is the improvement on the spherical compensating joint basis.
In the above-mentioned prior art, there is the load poor-performing in the former, especially a little less than the lateral load ability to bear; When thrust load is big, cardo ring rigidity deficiency, shortcoming such as deflection deformation is big, and also the pressure bearing and seal function of universal angle expansion joint only depends on bellows to realize, in case the bellows leakage failure, medium namely can release, and causes serious consequence.
The latter fails universal joint is combined with bellows.Insulation tube and telescopic pipe are two sections pipes on the aluminum smelting technology gas exhaust duct, deformation resistance is poor, big shortcoming takes up room 200520092938.7 be primarily aimed at, only simply spherical joint is connected in series with bellows in its structure and is one, spherical joint plays the effect of heat-insulated pipe, and bellows plays the telescopic pipe effect.Because bellows is that flexibility is flexible coupling, so this structure can not be born pressure thrust, pressure thrust will pass to both sides piping support or equipment bears, so this structure only is applicable to minute-pressure or low pressure occasion; And spherical joint can only bear the uniaxial pressure that spherical shell is pressed to spheroid, and rightabout pulling force need bear by fastening piece, owing to be subject to fastening piece, therefore can not absorb the angular displacement of any direction freely; Because be the serial connection mode, thus spherical joint or bellows wherein any one leaks, system is leakage failure, so system reliability there is no change.
85201754.5 and 200720307200.7 belong to sleeve class compensator, is the improvement on the spherical compensating joint of stuffing box formula basis, 85201754.5 mainly solve major diameter, big flex angle problem, belong to the extension of original technological scheme; 200720307200.7 mainly solve the stuck and rubber high temperature ageing problem of the dust-like fouling of packing cavity.These two kinds of structures all exist the sphere packing seal to need frequent replacing in leaking easily, using, and safeguard shortcomings such as inconvenience, only are applicable to minute-pressure or low pressure occasion, can not use in medium occasions such as high temperature, inflammable and explosive, poisonous, corrosion.
The model utility content
The purpose of this utility model is: at the shortcoming that above-mentioned prior art exists, propose that a kind of all directions load ability is strong, pressure bearing and seal is good, rotate the universal angle of spherical shell formula expansion joint flexibly.
In order to reach above purpose, the universal angle of spherical shell formula of the present utility model expansion joint basic technical scheme is: comprise first adapter and second adapter that are interconnected, described first adapter and second cylindrical of taking over radially extend the first ring-type riser and the second ring-type riser respectively, the described first ring-type riser and the second ring-type riser extend first outer tube and second outer tube respectively to axial, described first take over and second take between and between described first outer tube and second outer tube, be connected with spherical shell by bellows or by the hollow ball that the assembling that matches constitutes spherical hinge structure respectively.
The utility model further improves, and between described spheroid and the spherical shell annular seal is set, and described Sealing should adopt antifriction material to make, thereby guarantees sealing effect, and reduces frictional force in relative rotation.
The utility model further improves again, described spherical hinge structure is provided with the deflection angle means for adjusting limit of movement, and described deflection angle means for adjusting limit of movement mainly is made of the circular hole at spherical shell middle part, the inner bolt of the corresponding described circular hole fixed-site of spheroid and the adjusting nut that is screwed on the inner bolt.This device can be limited in the angular displacement of bellows in the scope that not only satisfies usage requirement but also safety.
The utility model further improves, described first take over and second take between by the connection of pegging graft mutually of the guide shell of liner.
The utility model further improves again, fills heat preserving and insulating material in the cavity between described bellows and the spherical hinge structure, thereby can significantly improve the temperature tolerance of bellows or spheroid and spherical shell, promotes its high-temperature technology performance.
The utility model further improves in addition, charge into the no etchant gas such as inert gas of predetermined pressure in the cavity between described bellows and the spherical hinge structure, thereby improve bellows or spheroid and the spherical shell pressure difference among a small circle, reduce the stress level of bellows.
The utility model also further improves, described ring-type riser be provided with bellows and spherical hinge structure between the pressure monitoring and alarm device that communicates of cavity, can monitor the information of bellows or ball pivot packing seal leakage like this in the very first time, be convenient in time adopt remedial measures.
After adopting technique scheme of the present utility model, first adapter and second forms direct current channel between taking over, realize being tightly connected by bellows, first adapter, spheroid, spherical shell, second adapter are by the Spielpassung of spheroid and spherical shell, when reaching fed sheet of a media, between taking over, first adapter and second can absorb the angular displacement of any direction.Produce the angular displacement synchronous with bellows between spheroid and spherical shell, because on the stressed annular spherical surface of contact that is uniformly distributed in spheroid and spherical shell, therefore strengthened the ability that the universal angle of the utility model expansion joint bears axial and transverse force greatly; And under axial and transverse force effect, spheroid and spherical shell remain stable annular contact surface, and then compress the annular seal made from antifriction material, have realized multi-sealed.In a word, the universal angle of spherical shell formula of the present utility model expansion joint have that each is strong to the load ability, pressure bearing and seal is good, safe and reliable, rotate flexibly, compact structure, application remarkable advantage widely.
Description of drawings
Below in conjunction with accompanying drawing the utility model is further described.
Fig. 1 is the utility model embodiment one structural representation.
Fig. 2 is the utility model embodiment two structural representation.
Fig. 3 is Fig. 1 embodiment's partial enlarged drawing.
Fig. 4 is Fig. 2 embodiment's partial enlarged drawing.
Fig. 5 is that the A of Fig. 3, Fig. 4 is to zoomed-in view.
Embodiment
Embodiment one
Spherical shell formula universal angle expansion joint such as Fig. 1, shown in Figure 3 of present embodiment, for a kind of ball pivot wraps in the outer structure of bellows, the 2 guide shell 8 relative grafting by liner are taken in first adapter 1 and second that wherein is interconnected.First cylindrical of taking over 1 and second adapter 2 radially welds respectively and extends the first ring-type riser and the second ring-type riser that stiffening rib is reinforced.The first ring-type riser and the second ring-type riser extend first outer tube and second outer tube respectively to axial.First adapter 1 and second is communicated with by bellows 3 between taking over 2, and first outer tube and second outer tube are connected with hollow ball 4 and the spherical shell 5 of assembling the formation spherical hinge structure that match respectively, and the centre of sphere of hollow ball 4 and spherical shell 5 is preferably placed at the geometrical center A of bellows 3.
1) appearance of spheroid 4 has the four road annular grooves that Sealing 6 is put in embedding, and Sealing adopts antifriction material to make, thereby further guarantees sealing effect.Antifriction annular seal 6 is generally rubber, teflon, Expanded graphite etc., and bellows 3 can be random waveform, at crest or trough place stiffening ring is set in case of necessity.
2) spherical shell 5 middle parts of spherical hinge structure have circular hole (referring to Fig. 5), and the inner bolt 9 of adjusting nut 10 and locking nut 11 is fixedly screwed in the corresponding position central authorities of spheroid 4, constitutes the deflection angle means for adjusting limit of movement.As required, the adjusting nut of changing different size relends and helps the locking nut locking, and the corner that can change the universal angle of spherical shell formula expansion joint within the specific limits is spacing, thereby the angular displacement of bellows is limited in the scope that is suitable for safety.And the circular hole place is graduated scale 12 fixedly, and scale is angular readings with the hole along the place of coincidence, can intuitively reflect the angular displacement of the universal angle of spherical shell formula expansion joint.
3) fill heat preserving and insulating material 7 in the cavity between bellows and the spherical hinge structure, therefore have the good high-temperature performance, and reduce the stress of bellows.Heat preserving and insulating material can be alumina silicate fibre blanket, cellucotton etc., charges into inert gas or other no etchant gas of certain pressure simultaneously to cavity by ozzle I.
4) the ring-type riser be provided with bellows and spherical hinge structure between the pressure monitoring and alarm device H that communicates of cavity, this device is made up of ozzle, connecting tube, stop valve, pressure gauge, alarm, sensor, set in advance certain pressure alarm value to alarm, surpass namely and report to the police automatically.
First adapter 1 of present embodiment, bellows 3, second adapter 2 threes are connected to seal and form first pressure pocket, angular displacement freely each other, first take over 1, spheroid 4, spherical shell 5, antifriction annular seal 6, second take over 2 and utilize packing seal to form second pressure pocket, angular displacement freely each other.The inner logical pressure medium of first pressure pocket, outside second pressure pocket of connecting, second pressure pocket is outside to communicate with atmosphere, thereby has constituted the universal angle of spherical shell formula expansion joint.
Embodiment two
Spherical shell formula universal angle expansion joint such as Fig. 2, shown in Figure 4 of present embodiment, for a kind of bellows wraps in the outer structure of ball pivot, be to be communicated with by bellows between first outer tube and second outer tube with embodiment one the main distinction, first take over 1 and second take over 2 hollow ball 4 and the spherical shells 5 that constitute spherical hinge structure with the assembling that matches respectively be connected (second in the present embodiment taken over 2 and is connected by second outer tube and spherical shell 5, also can be directly and spherical shell 5 be connected).
During work, first takes over 1, second adapter 2 is connected with on-the-spot pipeline respectively, in the time of the universal angle of spherical shell formula expansion joint conveyance conduit medium, flexibility by bellows 3 can absorb any direction angular displacement, spheroid 4 outer surfaces cooperate with spherical shell 5 internal surface gaps, and sphere center position and bellows geometrical center coincide with the A point, have realized the synchro angle displacement of spheroid 4 and spherical shell 5 and bellows 3.
Facts have proved that above embodiment not only can realize traditional universal angle all technical performances of expansion joint, have more that all directions load ability is strong, pressure bearing and seal is good, safe and reliable, rotate flexibly, compact structure, application characteristics widely.When spheroid 4 has been realized with bellows 3 generation synchro angle displacements with spherical shell 5, the effect of load and double seal, when carrying high-risk medium, high-risk medium is gone out directly injury of formation after can preventing bellows 3 contingency leakage failures, spheroid 4 is positioned over bellows 3 outsides with spherical shell 5, effectively protective corrugated tube 3 exempts from the collision injury, has improved Product Safety greatly.Embodiment one is particularly useful for the high pressure occasion, can reduce the bellows stress level by giving the inert gas or other the no etchant gas that charge into certain pressure between bellows and ball pivot in the cavity, promotes safety reliability.Embodiment two is particularly useful for high temperature, aggressive medium occasion; fill the temperature tolerance that heat preserving and insulating material can significantly improve bellows between bellows and ball pivot in the cavity by giving; promote its high-temperature technology performance, and the seal protection structure of ball pivot can reduce Korrosionsmedium to the harm of bellows.
In addition to the implementation, the utility model can also have other mode of execution, as: according to axially loaded direction difference, 5 of spherical shells can be kept a small amount of sphere, perhaps 4 of spheroids be kept a small amount of sphere; Filling structure etc. flexibly can be selected according to antifriction annular seal 6 by spheroid 4 and spherical shell 5 surface of contact places.All employings are equal to the technological scheme of replacement or equivalent transformation formation, all drop on the protection domain of the utility model requirement.
Claims (10)
1. the universal angle of spherical shell formula expansion joint, comprise first adapter and second adapter that are interconnected, it is characterized in that: comprise first adapter and second adapter that are interconnected, described first adapter and second cylindrical of taking over radially extend the first ring-type riser and the second ring-type riser respectively, the described first ring-type riser and the second ring-type riser extend first outer tube and second outer tube respectively to axial, described first take over and second take between and between described first outer tube and second outer tube, be connected with spherical shell by bellows or by the hollow ball that the assembling that matches constitutes spherical hinge structure respectively.
2. the universal angle of spherical shell formula according to claim 1 expansion joint, it is characterized in that: described first adapter and second connects by bellows between taking over, and the hollow ball by the assembling formation spherical hinge structure that matches between described first outer tube and second outer tube is connected with spherical shell.
3. the universal angle of spherical shell formula according to claim 1 expansion joint, it is characterized in that: connect by bellows between described first outer tube and second outer tube, the hollow ball by the assembling formation spherical hinge structure that matches between described first adapter and second is taken over is connected with spherical shell.
4. according to claim 2 or the universal angle of 3 described spherical shell formulas expansion joint, it is characterized in that: the centre of sphere of described hollow ball and spherical shell is positioned at the geometrical center of described bellows.
5. the universal angle of spherical shell formula according to claim 4 expansion joint is characterized in that: between described spheroid and the spherical shell annular seal is set.
6. the universal angle of spherical shell formula according to claim 5 expansion joint, it is characterized in that: described spherical hinge structure is provided with the deflection angle means for adjusting limit of movement, and described deflection angle means for adjusting limit of movement mainly is made of the circular hole at spherical shell middle part, the inner bolt of the corresponding described circular hole fixed-site of spheroid and the adjusting nut that is screwed on the inner bolt.
7. the universal angle of spherical shell formula according to claim 6 expansion joint is characterized in that: described first take over and second take between by the connection of pegging graft mutually of the guide shell of liner.
8. the universal angle of spherical shell formula according to claim 7 expansion joint is characterized in that: fill heat preserving and insulating material in the cavity between described bellows and the spherical hinge structure.
9. the universal angle of spherical shell formula according to claim 8 expansion joint is characterized in that: the no etchant gas that charges into predetermined pressure in the cavity between described bellows and the spherical hinge structure.
10. the universal angle of spherical shell formula according to claim 9 expansion joint is characterized in that: described ring-type riser be provided with bellows and spherical hinge structure between the pressure monitoring and alarm device that communicates of cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320135076 CN203131304U (en) | 2013-03-22 | 2013-03-22 | Spherical shell type universal angle expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320135076 CN203131304U (en) | 2013-03-22 | 2013-03-22 | Spherical shell type universal angle expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203131304U true CN203131304U (en) | 2013-08-14 |
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ID=48939282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320135076 Withdrawn - After Issue CN203131304U (en) | 2013-03-22 | 2013-03-22 | Spherical shell type universal angle expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203131304U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148311A (en) * | 2013-03-22 | 2013-06-12 | 航天晨光股份有限公司 | Spherical-shell-type universal angle expansion joint |
| CN105065835A (en) * | 2015-08-13 | 2015-11-18 | 中国航空工业集团公司西安飞机设计研究所 | Spherical adapting angle compensator |
-
2013
- 2013-03-22 CN CN 201320135076 patent/CN203131304U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103148311A (en) * | 2013-03-22 | 2013-06-12 | 航天晨光股份有限公司 | Spherical-shell-type universal angle expansion joint |
| CN103148311B (en) * | 2013-03-22 | 2015-08-05 | 航天晨光股份有限公司 | Spherical shell type universal angle expansion joint |
| CN105065835A (en) * | 2015-08-13 | 2015-11-18 | 中国航空工业集团公司西安飞机设计研究所 | Spherical adapting angle compensator |
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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: 20130814 Effective date of abandoning: 20150805 |
|
| RGAV | Abandon patent right to avoid regrant |