CN204127559U - Coal dust leads special expansion joint - Google Patents
Coal dust leads special expansion joint Download PDFInfo
- Publication number
- CN204127559U CN204127559U CN201420466703.9U CN201420466703U CN204127559U CN 204127559 U CN204127559 U CN 204127559U CN 201420466703 U CN201420466703 U CN 201420466703U CN 204127559 U CN204127559 U CN 204127559U
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- CN
- China
- Prior art keywords
- expansion joint
- bellows
- middle adapter
- plate
- ring flat
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to coal dust and to lead special expansion joint, comprise bellows, middle adapter and expansion joint, expansion joint stretches in middle adapter, is provided with stuffing box packing between expansion joint and middle adapter, and middle adapter is connected with bellows by axially directed assembly.Axially directed assembly comprises cylindric connecting tube and rod assembly, the side of cylindric connecting tube is provided with upper saw pulley, upper saw pulley is connected with the exterior surface of expansion joint, the side of cylindric connecting tube is connected with middle adapter with bolt by ring flat-plate, and opposite side is connected with the ring flat-plate of bellows by rod assembly.The utility model is provided with guiding device, and middle adapter and expansion joint can not produce skew.The compensation rate of the utility model axial displacement is comparatively large, also can compensate certain deflection angle displacement amount simultaneously, the displacement produced when energy effective compensation and extraction duct equipment run.The utility model structure is simple, convenient and practical, long service life, manufactures, installation and maintenance is all very convenient.
Description
Technical field
The utility model relates to pipeline compensator technical field, and especially a kind of coal dust being mainly used in coal-burning power plant leads special expansion joint.
Background technique
At present, the industry such as electric power, building materials generally all needs to install and use expansion joint for pipeline in the duct, or claims pipeline compensator, and expansion joint for pipeline has ball-type expansion joint and bellows expansion joint usually.Expansion joint can do axial direct linear displacement and radial angle displacement, the displacement amount produced when equipment such as energy effective compensation and absorption boiler etc. runs.The bellows expansion joint that existing coal-burning power plant installs generally designs for pulverized coal channel, the Environmental Conditions of pulverized coal channel expansion joint is comparatively severe, the compensation rate that usual needs are larger, existing bellows expansion joint comprises the bellows being located at two ends and the scalable intermediate connection tube being connected two ends bellows, scalable intermediate connection tube comprises middle adapter and expansion joint, be generally direct socket between existing middle adapter and expansion joint, then seal with stuffing box packing.Like this in long-term using process, because expansion joint also can produce certain angular displacement while axial direct linear displacement, the axis of middle adapter and expansion joint produces skew, the expanding-contracting action of middle adapter and expansion joint is caused to be hindered, continue to use and just easily leakage phenomenon occurs, thus must compensator be changed, cause the working life of compensator short, safeguard and change workload greatly, cost is high.
Model utility content
The purpose of this utility model is to provide one and is provided with guiding device, and middle adapter and expansion joint can not produce skew, long service life, and the coal dust that maintenance workload is less leads special expansion joint.
The purpose of this utility model is achieved by the following technical solution:
Coal dust leads special expansion joint, comprise the bellows being located at two ends and the scalable intermediate connection tube being connected two ends bellows, described scalable intermediate connection tube comprises middle adapter and expansion joint, one end of described expansion joint extend in one end of middle adapter, the other end of middle adapter is connected with the first bellows, the other end of expansion joint is connected with the second bellows, be provided with stuffing box packing between described expansion joint and middle adapter, middle adapter is connected with the second bellows by axially directed assembly.
As optimal technical scheme of the present utility model, described axially directed assembly comprises cylindric connecting tube and rod assembly, the side of cylindric connecting tube is provided with upper saw pulley, upper saw pulley is connected with the exterior surface of expansion joint, the side of described cylindric connecting tube is connected with middle adapter with bolt by ring flat-plate, and the opposite side of cylindric connecting tube is connected by the ring flat-plate of rod assembly with the second bellows.
As optimal technical scheme of the present utility model, the both sides of described first bellows are respectively equipped with ring flat-plate, are connected between ring flat-plate by rod assembly; Pipe nipple and interior pipe is respectively equipped with in described first bellows, between pipe nipple and interior pipe, interval is arranged and is connected by ring pipe, the side of described ring flat-plate to be connected with pipe nipple or interior pipe by gusset and to fix, and the opposite side of ring flat-plate to be connected with bellows by Corrugated connection tabe and to fix.
As optimal technical scheme of the present utility model, the both sides of described second bellows are respectively equipped with ring flat-plate, are connected between ring flat-plate by rod assembly; Pipe nipple and expansion joint is respectively equipped with in described second bellows, between pipe nipple and expansion joint, interval is arranged and is connected by ring pipe, the side of described ring flat-plate to be connected with pipe nipple or expansion joint by gusset and to fix, and the opposite side of ring flat-plate to be connected with bellows by Corrugated connection tabe and to fix.
As optimal technical scheme of the present utility model, internal surface and the pipe nipple of described first bellows, between ring pipe and interior pipe, be provided with packing.
As optimal technical scheme of the present utility model, internal surface and the pipe nipple of described second bellows, between ring pipe and expansion joint, be provided with packing.
As optimal technical scheme of the present utility model, described packing is aluminosilicate fiber cotton.
As optimal technical scheme of the present utility model, the outer surface of described middle adapter is provided with filling tube, and filling tube is communicated with the packing cavity between middle adapter and expansion joint.
As optimal technical scheme of the present utility model, described stuffing box packing is Expanded graphite dish.
The beneficial effects of the utility model are: relative to prior art, and the utility model expansion joint is provided with guiding device between middle adapter and expansion joint, and in Long-Time Service process, middle adapter and expansion joint also can not produce skew.The utility model is the bellows expansion joint being exclusively used in power transportation pipe, and the compensation rate of its axial displacement is comparatively large, also can compensate certain deflection angle displacement amount simultaneously, the larger displacement produced when energy effective compensation and extraction duct equipment run.The utility model structure is simple, convenient and practical, long service life, and manufacture, installation and maintenance is all very convenient.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail:
Fig. 1 is structural representation of the present utility model.
In figure: 1, pipe nipple, 2, Corrugated connection tabe, 3, rod assembly, the 4, first bellows, 5, packing, 6, gusset, 7, middle adapter, 8, filling tube, 9, stuffing box packing, 10, upper saw pulley, 11, expansion joint, 12, ring flat-plate, 13, ring pipe, 14, interior pipe, the 15, second bellows.
Embodiment
As shown in Figure 1, coal dust leads special expansion joint, comprise the bellows being located at two ends and the scalable intermediate connection tube being connected two ends bellows, described scalable intermediate connection tube comprises middle adapter 7 and expansion joint 11, one end of expansion joint 11 extend in one end of middle adapter 7, the other end of middle adapter 7 is connected with the first bellows 4, the other end of expansion joint 11 is connected with the second bellows 15, be provided with stuffing box packing 9 between described expansion joint 11 and middle adapter 7, middle adapter 7 is connected with the second bellows 15 by axially directed assembly.
Described axially directed assembly comprises cylindric connecting tube and rod assembly, the side of cylindric connecting tube is provided with upper saw pulley 10, upper saw pulley 10 is connected with the exterior surface of expansion joint 11, the side of described cylindric connecting tube is connected with middle adapter 7 with bolt by ring flat-plate, and the opposite side of cylindric connecting tube is connected by the ring flat-plate 12 of rod assembly with the second bellows 15.
In the present embodiment, the both sides of described first bellows 4 are respectively equipped with ring flat-plate, are connected between ring flat-plate by rod assembly 3; Pipe nipple 1 and interior pipe 14 is respectively equipped with in first bellows 4, between pipe nipple 1 and interior pipe 14, interval is arranged and is connected by ring pipe 13, the side of described ring flat-plate to be connected with pipe nipple 1 or interior pipe 14 by gusset 5 and to fix, and the opposite side of ring flat-plate is connected with bellows by Corrugated connection tabe 2 and is fixed.
The both sides of described second bellows 15 are respectively equipped with ring flat-plate, are connected between ring flat-plate by rod assembly; Pipe nipple and expansion joint 11 is respectively equipped with in described second bellows 15, between pipe nipple and expansion joint 11, interval is arranged and is connected by ring pipe, the side of described ring flat-plate to be connected with pipe nipple or expansion joint 11 by gusset and to fix, and the opposite side of ring flat-plate to be connected with bellows by Corrugated connection tabe and to fix.
In the present embodiment, internal surface and the pipe nipple 1 of described first bellows 4, between ring pipe 13 and interior pipe 14, be provided with packing 5.Be provided with packing between the internal surface of the second bellows and pipe nipple, ring pipe and expansion joint 11, packing described in the present embodiment is aluminosilicate fiber cotton.The outer surface of described middle adapter 7 is provided with filling tube 8, and filling tube 8 is communicated with the packing cavity between middle adapter 7 and expansion joint 11.Stuffing box packing 9 described in the utility model is Expanded graphite dishes.
Claims (9)
1. a coal dust leads special expansion joint, comprise the bellows being located at two ends and the scalable intermediate connection tube being connected two ends bellows, it is characterized in that: described scalable intermediate connection tube comprises middle adapter and expansion joint, one end of described expansion joint extend in one end of middle adapter, the other end of middle adapter is connected with the first bellows, the other end of expansion joint is connected with the second bellows, be provided with stuffing box packing between described expansion joint and middle adapter, middle adapter is connected with the second bellows by axially directed assembly.
2. coal dust according to claim 1 leads special expansion joint, it is characterized in that: described axially directed assembly comprises cylindric connecting tube and rod assembly, the side of cylindric connecting tube is provided with upper saw pulley, upper saw pulley is connected with the exterior surface of expansion joint, the side of described cylindric connecting tube is connected with middle adapter with bolt by ring flat-plate, and the opposite side of cylindric connecting tube is connected by the ring flat-plate of rod assembly with the second bellows.
3. coal dust according to claim 1 and 2 leads special expansion joint, it is characterized in that: the both sides of described first bellows are respectively equipped with ring flat-plate, are connected between ring flat-plate by rod assembly; Pipe nipple and interior pipe is respectively equipped with in described first bellows, between pipe nipple and interior pipe, interval is arranged and is connected by ring pipe, the side of described ring flat-plate to be connected with pipe nipple or interior pipe by gusset and to fix, and the opposite side of ring flat-plate to be connected with bellows by Corrugated connection tabe and to fix.
4. coal dust according to claim 1 and 2 leads special expansion joint, it is characterized in that: the both sides of described second bellows are respectively equipped with ring flat-plate, are connected between ring flat-plate by rod assembly; Pipe nipple and expansion joint is respectively equipped with in described second bellows, between pipe nipple and expansion joint, interval is arranged and is connected by ring pipe, the side of described ring flat-plate to be connected with pipe nipple or expansion joint by gusset and to fix, and the opposite side of ring flat-plate to be connected with bellows by Corrugated connection tabe and to fix.
5. coal dust according to claim 3 leads special expansion joint, it is characterized in that: internal surface and the pipe nipple of described first bellows, be provided with packing between ring pipe and interior pipe.
6. coal dust according to claim 4 leads special expansion joint, it is characterized in that: internal surface and the pipe nipple of described second bellows, be provided with packing between ring pipe and expansion joint.
7. the coal dust according to claim 5 or 6 leads special expansion joint, it is characterized in that: described packing is aluminosilicate fiber cotton.
8. coal dust according to claim 1 leads special expansion joint, it is characterized in that: the outer surface of described middle adapter is provided with filling tube, and filling tube is communicated with the packing cavity between middle adapter and expansion joint.
9. coal dust according to claim 1 leads special expansion joint, it is characterized in that: described stuffing box packing is Expanded graphite dish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420466703.9U CN204127559U (en) | 2014-08-18 | 2014-08-18 | Coal dust leads special expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420466703.9U CN204127559U (en) | 2014-08-18 | 2014-08-18 | Coal dust leads special expansion joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204127559U true CN204127559U (en) | 2015-01-28 |
Family
ID=52383915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420466703.9U Expired - Fee Related CN204127559U (en) | 2014-08-18 | 2014-08-18 | Coal dust leads special expansion joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204127559U (en) |
-
2014
- 2014-08-18 CN CN201420466703.9U patent/CN204127559U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20150818 |
|
| EXPY | Termination of patent right or utility model |