CN210291951U - Shaft heat insulation device - Google Patents
Shaft heat insulation device Download PDFInfo
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- CN210291951U CN210291951U CN201920941366.7U CN201920941366U CN210291951U CN 210291951 U CN210291951 U CN 210291951U CN 201920941366 U CN201920941366 U CN 201920941366U CN 210291951 U CN210291951 U CN 210291951U
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Abstract
The utility model relates to a thermal-insulated device of axle, concretely is applied to high temperature flue gas damper. The shaft heat insulation device is used on a high-temperature flue gas baffle door, is simple in structure, and can realize the shaft heat insulation function without secondary installation and debugging on site. The thermal insulation device comprises a thermal insulation device frame, wherein the thermal insulation device frame is arranged between a turbine box connected with an electric actuator and a baffle plate shaft framework, the upper end of the thermal insulation device frame is connected with the turbine box, and the lower end of the thermal insulation device frame is connected with the baffle plate shaft framework; a flange shaft, a flange shaft sleeve and a connecting flange are arranged in the frame, the shaft end of the flange shaft penetrates out of the upper end of the frame and is connected with an output hole of the turbine box, and the shaft sleeve end of the flange shaft sleeve penetrates out of the lower end of the frame and is connected with an output shaft of the baffle door; the flange end of the flange shaft is connected with the flange end of the flange shaft sleeve through a connecting flange.
Description
Technical Field
The utility model relates to a heat-proof device especially relates to a shaft heat-proof device, and concretely is applied to high temperature flue gas damper.
Background
The flue gas baffle door is an important part for treating flue gas of the coal-fired boiler, and is widely applied to coal-fired waste heat boilers in power plants and heating industries and flue gas channels of desulfurization, denitration and other systems. The smoke damper door usually operates under the working condition of more than 200 ℃, and various high-temperature smoke treatment technologies are widely applied along with the continuous improvement of national requirements on environmental protection.
The key of the manufacturing technology of the high-temperature flue gas baffle door is to solve the problem that after an output shaft of the high-temperature flue gas baffle door is connected with an electric actuator, the electric device core component, namely a chip and an electric device element are aged and burnt due to overhigh temperature of the electric device, and cannot work.
The prior art, as shown in fig. 1, generally lengthens the output shaft 14 on the high-temperature flue gas damper 19 or winds the metal cooling fin 17 on the lengthened output shaft 14 to reduce the heat conduction of the output shaft 14 to the electric actuator 1. Alternatively, as shown in fig. 2, the output shaft 14 of the high temperature flue gas damper door 19 is connected angularly by the connecting rod 20, so that the electric actuator 1 is insulated away from the high temperature flue gas damper door 19.
The application of the shaft heat insulation structure in the prior art improves the heat insulation performance of the high-temperature smoke baffle door shaft, but has the following disadvantages.
1. The lengthening of the output shaft 14 lengthens the flapper door shaft bracket 16, and the strength of the lengthened shaft is weakened, so that the shaft needs to be thickened to maintain the strength. Lengthening the output shaft 14 results in increased torque.
2. If the connecting rod 20 is connected with the heat insulation device in an angle mode, secondary installation and debugging are needed on site, the baffle door is installed at a position which is a few meters or more than ten meters high above the ground, and the electric actuator needs to be installed on a platform or fixed on the ground on site, so that unnecessary manpower and material resource consumption and danger are caused.
3. The shaft lengthening and connecting rod connecting device has the function of shaft heat insulation, but the manufacturing and on-site secondary debugging and installation procedures are added, the manufacturing cost of the high-temperature flue gas baffle door is increased, and a large amount of manpower and material resources are consumed.
Disclosure of Invention
The utility model discloses be exactly to the defect that prior art exists, provide an axle heat-proof device, it is used in high temperature flue gas damper, and simple structure need not on-the-spot secondary installation and debugging and can realize the thermal-insulated function of axle.
In order to achieve the above object, the utility model discloses a following technical scheme, including the heat-proof device frame, this heat-proof device frame sets up between turbine case and the baffle axle skeleton that link to each other with electric actuator, and the upper end of heat-proof device frame links to each other with the turbine case, and the lower extreme of heat-proof device frame links to each other with baffle axle skeleton.
A flange shaft, a flange shaft sleeve and a connecting flange are arranged in the frame, the shaft end of the flange shaft penetrates out of the upper end of the frame and is connected with an output hole of the turbine box, and the shaft sleeve end of the flange shaft sleeve penetrates out of the lower end of the frame and is connected with an output shaft of the baffle door.
The flange end of the flange shaft is connected with the flange end of the flange shaft sleeve through a connecting flange.
As an optimized scheme of the utility model, accompany the asbestos board between the upper end of heat-proof device frame and turbine case, also accompany the asbestos board between heat-proof device's lower extreme and baffle axle skeleton.
As another preferred scheme of the utility model, the upper end of heat-proof device frame passes through connecting bolt and links to each other with the turbine case, and the lower extreme of heat-proof device frame passes through connecting bolt and links to each other with the turbine case.
As another preferred scheme of the utility model, the flange end of flange axle links to each other through thermal-insulated bolt with flange, and thermal-insulated bolt overcoat is equipped with high temperature heat insulation sleeve.
As another preferred scheme of the utility model, the flange end and the flange of flange axle sleeve pass through sleeve pipe bolt and link to each other, and the sleeve pipe bolt overcoat is equipped with high temperature heat insulation sleeve.
As another preferred scheme of the utility model, the material of high temperature heat insulation sleeve pipe adopts bakelite.
As another preferred scheme of the utility model, be provided with a plurality of louvres on the heat-proof device frame.
Compared with the prior art the utility model discloses beneficial effect.
1. The utility model discloses an axle heat-proof device installs on high temperature flue gas flapper door, can effectual solution high temperature flue gas flapper door electric actuator, denso, chip, components and parts are overheated ageing, have improved the life of denso.
2. The utility model provides a thermal-insulated device of axle both can be used in on the rectangle high temperature flue gas damper, also can use on circular high temperature flue gas damper.
3. The utility model provides a thermal-insulated device of axle uses and need not on-the-spot secondary installation, debugging at high temperature flue gas damper, and material saving saves time and saves labour, and simple process easily operates.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description. The scope of protection of the present invention is not limited to the following description.
Fig. 1-2 are schematic structural views of the shaft heat insulation device in the prior art of the present invention.
Fig. 3 is a schematic structural view of the heat insulation device of the present invention.
Fig. 4 is a general view of a circular flue gas baffle door with the shaft heat insulation device of the present invention.
In the figure, 1 is an electric actuator, 2 is a turbine box, 3 is a flange shaft, 4 is a connecting bolt, 5 is an asbestos plate, 6 is a frame, 7 is a heat dissipation hole, 8 is a heat insulation bolt, 9 is a heat insulation sleeve I, 10 is a connecting flange, 11 is a sleeve bolt, 12 is a heat insulation sleeve II, 13 is a flange shaft sleeve, 14 is a baffle door output shaft, 15 is a baffle shaft framework, 16 is a shaft support, 17 is a metal radiating fin, 19 is a smoke baffle door, 20 is a connecting rod, 21 is a shaft heat insulation device, and 22 is a shaft framework support.
Detailed Description
As shown in fig. 3-4, the utility model discloses a heat-proof device frame 6, this heat-proof device frame 6 sets up between turbine case 2 and the baffle axle skeleton 15 that link to each other with electric actuator 1, and the upper end of heat-proof device frame 6 links to each other with turbine case 2, and the lower extreme of heat-proof device frame 6 links to each other with baffle axle skeleton 15.
A flange shaft 3, a flange shaft sleeve 13 and a connecting flange 10 are arranged in the frame 6, and the shaft end of the flange shaft 3 penetrates through the upper end of the frame 6 and is connected with an output hole of the turbine box 2; the shaft sleeve end of the flange shaft sleeve 13 sequentially penetrates out of the lower end of the frame 6 and the baffle shaft framework 15 and is connected with the baffle door output shaft 14.
The flange end of the flange shaft 3 is connected with the flange end of the flange shaft sleeve 13 through a connecting flange 10.
Preferably, an asbestos sheet 5 is sandwiched between the upper end of the heat-insulating device frame 6 and the turbine case 2, and an asbestos sheet 5 is also sandwiched between the lower end of the heat-insulating device and the baffle shaft frame 15.
Preferably, the upper end of the heat insulation device frame 6 is connected with the turbine box 2 through the connecting bolt 4, and the lower end of the heat insulation device frame 6 is connected with the turbine box 2 through the connecting bolt 4.
Preferably, the flange end of the flange shaft is connected with the connecting flange 10 through a heat insulation bolt 8, and a high-temperature heat insulation sleeve is sleeved outside the heat insulation bolt 8.
Preferably, the flange end of the flange shaft sleeve 13 is connected with the connecting flange 10 through a sleeve bolt 11, and a high-temperature heat insulation sleeve is sleeved outside the sleeve bolt 11.
Preferably, the high-temperature heat insulation sleeve is made of bakelite.
Preferably, a plurality of heat dissipation holes 7 are formed in the heat insulation device frame 6.
The utility model discloses an axle heat-proof device is used for high temperature flue gas damper 19, makes it both be applicable to rectangle flapper door, also is applicable to circular flapper door, axle heat-proof device as shown in figure 3.
In general, the electric actuator 1 of the flue gas damper is installed by connecting the turbine box 2 with a damper shaft frame 15, and the damper shaft frame 15 is fixed on the damper valve body through a bolt and a shaft frame bracket 22. The baffle door output shaft 14 is embedded in an output hole of the turbine box 2 to form direct connection.
The utility model discloses an on this basis, break off flapper door output shaft 14 through heat-proof device frame 6, be connected with flange shaft 3 and turbine case 2's delivery outlet through heat-proof device flange 10 and heat-proof component and reach the thermal-insulated performance of axle.
The assembling process comprises the following steps.
1. The baffle shaft frame 15 is fixed on the baffle door valve body 23 after being connected with a shaft frame bracket (C-shaped steel) 22 through bolts.
2. The heat insulation device frame 6 is connected with a baffle shaft frame 15, and a high-temperature asbestos plate 5 is clamped in the middle.
3. The heat insulation device frame 6 is connected with the turbine box 2, and a high-temperature asbestos plate 5 is clamped in the middle.
4. And the flange shaft 3 of the turbine box 2 is connected with an output hole of the turbine box 2.
5. The high temperature flapper door output shaft 14 is connected to the high temperature flapper door flange shaft 13.
6. The high-temperature baffle door flange shaft sleeve 13 and the heat insulation device connecting flange 10 are connected with a high-temperature sleeve bolt 11 through a bakelite high-temperature heat insulation sleeve 12.
7. The heat insulation device connecting flange 10 is connected with the flange shaft 3 of the turbine box 2 through a bakelite high-temperature heat insulation sleeve 9 and a high-temperature sleeve bolt 11.
8. The above procedures form a complete heat insulation device for the smoke baffle door shaft.
The utility model discloses a conduct insulates against heat according to heat-conduction theory, the thermal-insulated flow of axle heat-proof device is: the high-temperature asbestos plate 5 on the upper portion of the framework is primary heat insulation, the bakelite high-temperature heat insulation sleeve pipe I9 is secondary heat insulation, the heat insulation device connecting flange 10 is tertiary heat insulation, and the bakelite high-temperature heat insulation sleeve pipe II 12 is quaternary heat insulation. The high-temperature asbestos plate 5 at the lower part of the frame is used for five-level heat insulation. The heat dissipation holes 7 of the frame of the heat insulation device are six-level heat insulation. The heat-insulating device frame heat dissipation hole 7 is based on the heat conduction theory-convection, utilizes the environment temperature to cool and insulate heat for the heat-insulating device component, and the heat-insulating mode and the process solve the heat-insulating property of the high-temperature smoke baffle door shaft heat-insulating device, thereby completing the utility model.
It should be understood that the above detailed description of the present invention is only for illustrating the present invention and is not limited by the technical solutions described in the embodiments of the present invention, and those skilled in the art should understand that the present invention can still be modified or equivalently replaced to achieve the same technical effects; as long as the use requirement is satisfied, the utility model is within the protection scope.
Claims (7)
1. The shaft heat insulation device is characterized by comprising a heat insulation device frame, wherein the heat insulation device frame is arranged between a turbine box connected with the electric actuator and a baffle shaft framework;
a flange shaft, a flange shaft sleeve and a connecting flange are arranged in the frame, the shaft end of the flange shaft penetrates out of the upper end of the frame and is connected with an output hole of the turbine box, and the shaft sleeve end of the flange shaft sleeve penetrates out of the lower end of the frame and is connected with an output shaft of the baffle door;
the flange end of the flange shaft is connected with the flange end of the flange shaft sleeve through a connecting flange.
2. The shaft insulation as defined in claim 1, wherein: asbestos board is clamped between the upper end of the heat insulation device frame and the turbine box, and asbestos board is also clamped between the lower end of the heat insulation device frame and the baffle shaft frame.
3. The shaft insulation as defined in claim 1, wherein: the upper end of the heat insulation device frame is connected with the turbine box through a connecting bolt, and the lower end of the heat insulation device frame is connected with the turbine box through a connecting bolt.
4. The shaft insulation as defined in claim 1, wherein: the flange end of the flange shaft is connected with the connecting flange through a heat insulation bolt, and a high-temperature heat insulation sleeve is sleeved outside the heat insulation bolt.
5. The shaft insulation as defined in claim 1, wherein: the flange end of the flange shaft sleeve is connected with the connecting flange through a sleeve bolt, and a high-temperature heat-insulating sleeve is sleeved outside the sleeve bolt.
6. The shaft thermal insulation according to claim 4 or 5, characterized in that: the high-temperature heat-insulation sleeve is made of bakelite.
7. The shaft insulation as defined in claim 1, wherein: a plurality of heat dissipation holes are formed in the heat insulation device frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920941366.7U CN210291951U (en) | 2019-06-21 | 2019-06-21 | Shaft heat insulation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920941366.7U CN210291951U (en) | 2019-06-21 | 2019-06-21 | Shaft heat insulation device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210291951U true CN210291951U (en) | 2020-04-10 |
Family
ID=70098120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920941366.7U Active CN210291951U (en) | 2019-06-21 | 2019-06-21 | Shaft heat insulation device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210291951U (en) |
-
2019
- 2019-06-21 CN CN201920941366.7U patent/CN210291951U/en active Active
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