CN104197144A - Special expansion joint for pulverized coal guide - Google Patents
Special expansion joint for pulverized coal guide Download PDFInfo
- Publication number
- CN104197144A CN104197144A CN201410407918.8A CN201410407918A CN104197144A CN 104197144 A CN104197144 A CN 104197144A CN 201410407918 A CN201410407918 A CN 201410407918A CN 104197144 A CN104197144 A CN 104197144A
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- China
- Prior art keywords
- expansion joint
- bellows
- connecting pipe
- plate
- special
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L51/00—Expansion-compensation arrangements for pipe-lines
- F16L51/02—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube
- F16L51/03—Expansion-compensation arrangements for pipe-lines making use of bellows or an expansible folded or corrugated tube comprising two or more bellows
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Joints Allowing Movement (AREA)
Abstract
The invention relates to a special expansion joint for pulverized coal guide. The special expansion joint comprises a corrugated pipe, a middle connecting pipe and a telescopic connecting pipe. The telescopic connecting pipe stretches into the middle connecting pipe, sealing packing is arranged between the telescopic connecting pipe and the middle connecting piece, and the middle connecting pipe is connected with the corrugated pipe through an axial guide assembly. The axial guide assembly comprises a cylindrical connecting pipe and a pull rod assembly, one side of the cylindrical connecting pipe is provided with a guide wheel, the guide wheel is in contact connection with the outer surface of the telescopic connecting pipe, one side of the cylindrical connecting pipe is connected with the middle connecting pipe through an annular plate and a bolt, and the other side of the cylindrical connecting pipe is connected with an annular plate of the corrugated plate through the pull rod assembly. The special expansion joint is provided with a guide device, and therefore the middle connecting pipe and the telescopic connecting pipe cannot deviate. According to the special expansion joint, the compensation amount of axial displacement is large, meanwhile, a certain deflection angle displacement can also be compensated, and therefore displacement generated when pipeline equipment runs can be effectively compensated and absorbed. The special expansion joint is simple in structure, convenient to use, practical, long in service life and convenient to manufacture, install and maintain.
Description
Technical field
The present invention relates to pipeline compensator technical field, especially a kind of coal dust that is mainly used in coal-burning power plant special-purpose expansion joint that leads.
Background technique
At present, the industries such as electric power, building materials generally all need to be installed and used expansion joint for pipeline in pipeline, or claim pipeline compensator, and expansion joint for pipeline has ball-type expansion joint and bellows expansion joint conventionally.Expansion joint can be done axial direct linear displacement and radial angle displacement, the displacement amount producing during the equipment operations such as energy effective compensation and absorption boiler.The bellows expansion joint that install existing coal-burning power plant generally designs for pulverized coal channel, the Environmental Conditions of pulverized coal channel expansion joint is comparatively severe, conventionally need larger compensation rate, existing bellows expansion joint comprises the bellows that is located at two ends and the scalable intermediate connection tube that is connected two ends bellows, scalable intermediate connection tube comprises middle adapter and expansion joint, between existing middle adapter and expansion joint, be generally direct socket, then with stuffing box packing, seal.Like this in long-term using process, because expansion joint also can produce certain angular displacement in axial direct linear displacement, the axis of middle adapter and expansion joint produces skew, cause the expanding-contracting action of middle adapter and expansion joint to be hindered, continue to use leakage phenomenon just easily occurs, thereby must change compensator, cause the working life of compensator short, safeguard that replacing workload is large, cost is high.
Summary of the invention
The object of this invention is to provide a kind of guiding device that is provided with, middle adapter and expansion joint can not produce skew, long service life, the coal dust that maintenance workload the is less special-purpose expansion joint that leads.
The object of the invention is by realizing by the following technical solutions:
The coal dust special-purpose expansion joint that leads, comprise the bellows that is located at two ends and the scalable intermediate connection tube that is 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, between described expansion joint and middle adapter, be provided with stuffing box packing, middle adapter is connected with the second bellows by axially directed assembly.
As the preferred technical solution of the present invention, described axially directed assembly comprises cylindric connecting tube and rod assembly, one side of cylindric connecting tube is provided with upper saw pulley, upper saw pulley is connected with the outer surface contact of expansion joint, one 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 with the ring flat-plate of the second bellows by rod assembly.
As the preferred technical solution of the present invention, the both sides of described the first bellows are respectively equipped with ring flat-plate, between ring flat-plate, by rod assembly, connect; In described the first bellows, be respectively equipped with pipe nipple and inner tube, between pipe nipple and inner tube, interval arranges and is connected by ring pipe, one side of described ring flat-plate is connected and fixes with pipe nipple or inner tube by gusset, and the opposite side of ring flat-plate is connected with bellows by Corrugated connection tabe and fixes.
As the preferred technical solution of the present invention, the both sides of described the second bellows are respectively equipped with ring flat-plate, between ring flat-plate, by rod assembly, connect; In described the second bellows, be respectively equipped with pipe nipple and expansion joint, between pipe nipple and expansion joint, interval arranges and is connected by ring pipe, one side of described ring flat-plate is connected and fixes with pipe nipple or expansion joint by gusset, and the opposite side of ring flat-plate is connected with bellows by Corrugated connection tabe and fixes.
As the preferred technical solution of the present invention, between the internal surface of described the first bellows and pipe nipple, ring pipe and inner tube, be provided with packing.
As the preferred technical solution of the present invention, between the internal surface of described the second bellows and pipe nipple, ring pipe and expansion joint, be provided with packing.
As the preferred technical solution of the present invention, described packing is aluminosilicate fiber cotton.
As the preferred technical solution of the present invention, 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 the preferred technical solution of the present invention, described stuffing box packing is Expanded graphite dish.
The invention has the beneficial effects as follows: with respect to prior art, expansion joint of the present invention is provided with guiding device between middle adapter and expansion joint, in long-term using process, middle adapter and expansion joint can not produce skew yet.The present invention is the bellows expansion joint that is exclusively used in power transportation pipe, and the compensation rate of its axial displacement is larger, also can compensate certain deflection angle displacement amount simultaneously, the larger displacement producing when energy effective compensation and the operation of extraction duct equipment.The present invention is simple in structure, convenient and practical, long service life, and manufacture, installation and maintenance are all very convenient.
Accompanying drawing explanation
Below in conjunction with accompanying drawing and specific embodiment, the invention will be further described:
Fig. 1 is structural representation of the present invention.
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, inner tube, the 15, second bellows.
Embodiment
As shown in Figure 1, the coal dust special-purpose expansion joint that leads, comprise the bellows that is located at two ends and the scalable intermediate connection tube that is 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, between described expansion joint 11 and middle adapter 7, be provided with stuffing box packing 9, 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, one side of cylindric connecting tube is provided with upper saw pulley 10, upper saw pulley 10 is connected with the outer surface contact of expansion joint 11, one 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 with the ring flat-plate 12 of the second bellows 15 by rod assembly.
In the present embodiment, the both sides of described the first bellows 4 are respectively equipped with ring flat-plate, between ring flat-plate, by rod assembly 3, connect; In the first bellows 4, be respectively equipped with pipe nipple 1 and inner tube 14, between pipe nipple 1 and inner tube 14, interval arranges and is connected by ring pipe 13, one side of described ring flat-plate is connected and fixes with pipe nipple 1 or inner tube 14 by gusset 5, and the opposite side of ring flat-plate is connected with bellows and is fixed by Corrugated connection tabe 2.
The both sides of described the second bellows 15 are respectively equipped with ring flat-plate, between ring flat-plate, by rod assembly, connect; In described the second bellows 15, be respectively equipped with pipe nipple and expansion joint 11, between pipe nipple and expansion joint 11, interval arranges and is connected by ring pipe, one side of described ring flat-plate is connected and fixes with pipe nipple or expansion joint 11 by gusset, and the opposite side of ring flat-plate is connected with bellows by Corrugated connection tabe and fixes.
In the present embodiment, between the internal surface of described the first bellows 4 and pipe nipple 1, ring pipe 13 and inner tube 14, be provided with packing 5.Between the internal surface of the second bellows and pipe nipple, ring pipe and expansion joint 11, be provided with packing, packing is aluminosilicate fiber cotton described in the present embodiment.The outer surface of described middle adapter 7 is provided with filling tube 8, the packing cavity that filling tube 8 is communicated with between middle adapter 7 and expansion joint 11.Stuffing box packing 9 of the present invention is Expanded graphite dishes.
Claims (9)
1. a coal dust special-purpose expansion joint that leads, comprise the bellows that is located at two ends and the scalable intermediate connection tube that is 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, between described expansion joint and middle adapter, be provided with stuffing box packing, middle adapter is connected with the second bellows by axially directed assembly.
2. the coal dust according to claim 1 special-purpose expansion joint that leads, it is characterized in that: described axially directed assembly comprises cylindric connecting tube and rod assembly, one side of cylindric connecting tube is provided with upper saw pulley, upper saw pulley is connected with the outer surface contact of expansion joint, one 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 with the ring flat-plate of the second bellows by rod assembly.
3. the coal dust according to claim 1 and 2 special-purpose expansion joint that leads, is characterized in that: the both sides of described the first bellows are respectively equipped with ring flat-plate, between ring flat-plate, by rod assembly, connect; In described the first bellows, be respectively equipped with pipe nipple and inner tube, between pipe nipple and inner tube, interval arranges and is connected by ring pipe, one side of described ring flat-plate is connected and fixes with pipe nipple or inner tube by gusset, and the opposite side of ring flat-plate is connected with bellows by Corrugated connection tabe and fixes.
4. the coal dust according to claim 1 and 2 special-purpose expansion joint that leads, is characterized in that: the both sides of described the second bellows are respectively equipped with ring flat-plate, between ring flat-plate, by rod assembly, connect; In described the second bellows, be respectively equipped with pipe nipple and expansion joint, between pipe nipple and expansion joint, interval arranges and is connected by ring pipe, one side of described ring flat-plate is connected and fixes with pipe nipple or expansion joint by gusset, and the opposite side of ring flat-plate is connected with bellows by Corrugated connection tabe and fixes.
5. the coal dust according to claim 3 special-purpose expansion joint that leads, is characterized in that: between the internal surface of described the first bellows and pipe nipple, ring pipe and inner tube, be provided with packing.
6. the coal dust according to claim 4 special-purpose expansion joint that leads, is characterized in that: between the internal surface of described the second bellows and pipe nipple, ring pipe and expansion joint, be provided with packing.
7. according to the special-purpose expansion joint that leads of the coal dust described in claim 5 or 6, it is characterized in that: described packing is aluminosilicate fiber cotton.
8. the coal dust according to claim 1 special-purpose expansion joint that leads, 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. the coal dust according to claim 1 special-purpose expansion joint that leads, is characterized in that: described stuffing box packing is Expanded graphite dish.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410407918.8A CN104197144A (en) | 2014-08-18 | 2014-08-18 | Special expansion joint for pulverized coal guide |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410407918.8A CN104197144A (en) | 2014-08-18 | 2014-08-18 | Special expansion joint for pulverized coal guide |
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| Publication Number | Publication Date |
|---|---|
| CN104197144A true CN104197144A (en) | 2014-12-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410407918.8A Pending CN104197144A (en) | 2014-08-18 | 2014-08-18 | Special expansion joint for pulverized coal guide |
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| Country | Link |
|---|---|
| CN (1) | CN104197144A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105512A (en) * | 2017-12-30 | 2018-06-01 | 江苏恒丰波纹管有限公司 | Three-dimensional coal dust FlexbleJoint with guide ring |
| CN108105513A (en) * | 2017-12-30 | 2018-06-01 | 江苏恒丰波纹管有限公司 | Three-dimensional coal dust FlexbleJoint with sealing device |
| CN108119722A (en) * | 2017-12-30 | 2018-06-05 | 江苏恒丰波纹管有限公司 | Three-dimensional coal dust FlexbleJoint with guide ring and sealing device |
| CN108468896A (en) * | 2018-05-23 | 2018-08-31 | 湖南华润电力鲤鱼江有限公司 | Dual damascene Telescopic metal device |
| CN112648458A (en) * | 2020-12-22 | 2021-04-13 | 哈尔滨锅炉厂有限责任公司 | Low-friction high-reliability expansion joint for pulverized coal pipeline |
-
2014
- 2014-08-18 CN CN201410407918.8A patent/CN104197144A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108105512A (en) * | 2017-12-30 | 2018-06-01 | 江苏恒丰波纹管有限公司 | Three-dimensional coal dust FlexbleJoint with guide ring |
| CN108105513A (en) * | 2017-12-30 | 2018-06-01 | 江苏恒丰波纹管有限公司 | Three-dimensional coal dust FlexbleJoint with sealing device |
| CN108119722A (en) * | 2017-12-30 | 2018-06-05 | 江苏恒丰波纹管有限公司 | Three-dimensional coal dust FlexbleJoint with guide ring and sealing device |
| CN108468896A (en) * | 2018-05-23 | 2018-08-31 | 湖南华润电力鲤鱼江有限公司 | Dual damascene Telescopic metal device |
| CN112648458A (en) * | 2020-12-22 | 2021-04-13 | 哈尔滨锅炉厂有限责任公司 | Low-friction high-reliability expansion joint for pulverized coal pipeline |
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| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141210 |
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| WD01 | Invention patent application deemed withdrawn after publication |