CN207316298U - The special joint of rotary air heater - Google Patents
The special joint of rotary air heater Download PDFInfo
- Publication number
- CN207316298U CN207316298U CN201720687140.XU CN201720687140U CN207316298U CN 207316298 U CN207316298 U CN 207316298U CN 201720687140 U CN201720687140 U CN 201720687140U CN 207316298 U CN207316298 U CN 207316298U
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- CN
- China
- Prior art keywords
- inner sleeve
- outer tube
- air heater
- rotary air
- airtight
- 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.)
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Abstract
A kind of special joint of rotary air heater, including inner sleeve and outer tube are the utility model is related to, it is characterized in that：The outer tube is rotated and is socketed on inner sleeve, and outer tube and inner sleeve are axial sliding fit；Airtight and watertight padding chamber is equipped between inner sleeve and the outer tube circumferential direction, airtight and watertight padding intracavitary is equipped with high temperature resistant filler.The special joint of the rotary air heater not only realizes the connection of No leakage between pipeline, while disclosure satisfy that equipment rotation and axially displaced requirement, further improves joint design, extends service life of equipment, simplifies component inspection.
Description
Technical field
A kind of swivel joint, especially a kind of special joint for rotary air heater are the utility model is related to, is belonged to
Jet chimney moves the technical field of connector.
Background technology
At present, Thermal Power Generation Industry at home and abroad, boiler air and gas system employs energy-saving rotary air heater, because energy saving
Significant effect, this several years application popularization rates are higher and higher, but the steam inlet and outlet nozzle of steam air heater must all use a pair can be with
The connector of rotation, to realize that the transition of fixed -piping to rotating pipe connects, the connector original structure more problems, leakage, turn not
Dynamic etc. is universal phenomenon, because radial-axial sets sealing at the same time, causes revolution torsion big, can not absorb axial deformation, and make
It is very short with the service life.Many users employ interim processing, are such as changed to mounting flange, and when rotation disengages again, or using soft
Pipe etc. is emergent, not only time-consuming, take material, is costly, but also problem cannot be eradicated thoroughly.In this case, market is in the urgent need to address
Scheme or substitute products.
The content of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, there is provided a kind of rotary air heater it is special
Connector, not only realizes the connection of No leakage between pipeline, while disclosure satisfy that equipment rotation and axially displaced requirement, further
Joint design is improved, extends service life of equipment, simplifies component inspection.
According to technical solution provided by the utility model, the special joint of the rotary air heater, including inner sleeve and
Outer tube, it is characterized in that：The outer tube is rotated and is socketed on inner sleeve, and outer tube and inner sleeve are matched somebody with somebody to slide axially
Close；Airtight and watertight padding chamber is equipped between inner sleeve and the outer tube circumferential direction, airtight and watertight padding intracavitary is equipped with high temperature resistant filler.
Further, the airtight and watertight padding chamber is equipped with an openend, and the openend side of airtight and watertight padding chamber is equipped with sealing and presses
Lid, sealing gland compress high temperature resistant filler, form circumferential seal.
Further, the outer wall of the inner sleeve is equipped with axial limiting boss, and the axial limiting boss is away from overcoat
The side turning set of pipe is limited an end cap, and spacing end cap and inner sleeve are axial sliding fit.
Further, the spacing end cap, sealing gland are connected with outer tube by bolt pair.
Further, the end of the inner sleeve is equipped with mounting flange, and inner sleeve is welded and fixed with mounting flange.
The utility model has the following advantages：The special joint of the rotary air heater is simple in structure, and material is general
Logical material, the No leakage under not higher than 2.5MP, 450 DEG C of steam, meets the requirement of main equipment, outer tube can be along inner sleeve
Move axially and rotated around inner sleeve, realize the transition connection of seal for pipe joints, fixed -piping and rotating pipe, realize the heat of heat pipe
Expansion compensation；It is radial seal structure between inner sleeve and outer tube, the characteristic with the driving of small torque；Inner sleeve is with respect to overcoat
Pipe uses dissimilar metal, equipment in long-term use will not corrosion adhesion, its performance is further perfect, and cost performance improves, and safeguards
It is easy.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Embodiment
With reference to specific attached drawing, the utility model is described in further detail.
As shown in Figure 1：The special joint of the rotary air heater include mounting flange 1, inner sleeve 2, spacing end cap 3,
Sealing gland 4, clamping screw pair 5, refractory seals filler 6, outer tube 7, axial limiting boss 8, airtight and watertight padding chamber 9 etc..
As shown in Figure 1, the utility model includes inner sleeve 2 and outer tube 7, one end of the inner sleeve 2 is equipped with Method for Installation
Orchid 1, inner sleeve 2 is welded and fixed with mounting flange 1, and the other end of inner sleeve 2, which rotates, is socketed outer tube 7, and outer tube 7 and interior
The axial sliding fit of casing 2；The outer wall of the inner sleeve 2 is equipped with axial limiting boss 8, and axial limiting boss 8 is away from outer
The side turning set of casing 7 is limited an end cap 3, and spacing end cap 3 and inner sleeve 2 are axial sliding fit；The inner sleeve 2 and outer
Airtight and watertight padding chamber 9 is equipped between 7 circumferential direction of casing, is equipped with graphite-like high temperature resistant filler 6 in airtight and watertight padding chamber 9, airtight and watertight padding chamber 9 is set
There is an openend, the openend side of airtight and watertight padding chamber 9 is equipped with sealing gland 4；The spacing end cap 3, sealing gland 4 and overcoat
Pipe 7 is connected by bolt pair 5, and the sealing gland 4 compresses high temperature resistant filler 6 by bolt pair 5, forms circumferential seal；It is described
Outer tube 7 can be moved axially along inner sleeve 2 and rotated around inner sleeve 2；The outer tube 7 is by spacing end cap 3 to along inner sleeve 2
Axial movement carries out spacing.
The course of work and operation principle of the utility model be：As shown in Figure 1, the mounting flange 1 of 2 one end of inner sleeve is with consolidating
Fixed tube road connects, and outer tube 7 is connected with rotary air heater；When steam air heater rotates, outer tube 7 is driven to be rotated around inner sleeve 2, and
2 remains stationary of inner sleeve is motionless, forms dynamic rotation sealing, the graphite-like high temperature resistant filler 6 in airtight and watertight padding chamber 9 rises close at this time
Envelope acts on, and ensures that steam does not leak outside in pipe；And when at high temperature axial expansion occurs for steam air heater, outer tube 7 is driven along inner sleeve
Pipe 2 it is axially displaced, and inner tube 2 remain unchanged remains stationary it is motionless, ensure that the state of no leakage；As a result of radially close
Envelope, the moment of torsion that outer tube 7 needs when rotating is very small, beneficial to the upset of steam air heater.
The utility model not only realizes fixed -piping and the transition seal of rotating pipe connects, and realizes the thermal expansion of heat pipe
Compensation, also achieves with less torque rotation outer tube, its performance is further perfect, and cost performance improves, and safeguards simpler
Just.
Claims (4)
1. the special joint of rotary air heater, including inner sleeve（2）And outer tube（7）, it is characterized in that：The outer tube（7）
Rotation is socketed in inner sleeve（2）On, and outer tube（7）And inner sleeve（2）For axial sliding fit；The inner sleeve（2）With
Outer tube（7）Airtight and watertight padding chamber is equipped between circumferential direction（9）, airtight and watertight padding chamber（9）It is interior to be equipped with high temperature resistant filler（6）；
The inner sleeve（2）Outer wall be equipped with axial limiting boss（8）, the axial limiting boss（8）Away from outer tube（7）
Side turning set limit an end cap（3）, spacing end cap（3）And inner sleeve（2）For axial sliding fit；The outer tube（7）
Pass through spacing end cap（3）To along inner sleeve（2）Axial movement carries out spacing.
2. the special joint of rotary air heater as claimed in claim 1, it is characterized in that：The airtight and watertight padding chamber（9）It is equipped with
One openend, airtight and watertight padding chamber（9）Openend side be equipped with sealing gland（4）, sealing gland（4）Compress high temperature resistant filler
（6）, form circumferential seal.
3. the special joint of rotary air heater as claimed in claim 1, it is characterized in that：The spacing end cap（3）, sealing pressure
Lid（4）And outer tube（7）Pass through bolt pair（5）Connection.
4. the special joint of rotary air heater as claimed in claim 1, it is characterized in that：The inner sleeve（2）End set
There is mounting flange（1）, inner sleeve（2）With mounting flange（1）It is welded and fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720687140.XU CN207316298U (en) | 2017-06-13 | 2017-06-13 | The special joint of rotary air heater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720687140.XU CN207316298U (en) | 2017-06-13 | 2017-06-13 | The special joint of rotary air heater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207316298U true CN207316298U (en) | 2018-05-04 |
Family
ID=62436396
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720687140.XU Active CN207316298U (en) | 2017-06-13 | 2017-06-13 | The special joint of rotary air heater |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207316298U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594501A (en) * | 2019-09-23 | 2019-12-20 | 宁波天生密封件有限公司 | Thread clamping and pressing type pipe fitting structure and using method thereof |
-
2017
- 2017-06-13 CN CN201720687140.XU patent/CN207316298U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110594501A (en) * | 2019-09-23 | 2019-12-20 | 宁波天生密封件有限公司 | Thread clamping and pressing type pipe fitting structure and using method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant |