CN219300795U - Full-wrapping fixed wear-resistant device - Google Patents
Full-wrapping fixed wear-resistant device Download PDFInfo
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- CN219300795U CN219300795U CN202222672256.XU CN202222672256U CN219300795U CN 219300795 U CN219300795 U CN 219300795U CN 202222672256 U CN202222672256 U CN 202222672256U CN 219300795 U CN219300795 U CN 219300795U
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Abstract
The utility model discloses a full-wrapping fixed anti-wear device which comprises a full-wrapping fixed anti-wear device body (3), a fixing ring (6), a locking device (8), a water wall hanging pipe (1), a water wall pipe screen (2), a water wall hanging pipe sealing ring (5) and a water wall pipe screen sealing ring (4). The internal superconducting material (7) is arranged in a cavity of the fully-wrapped fixed anti-wear device body (3) which is surrounded by welding. The locking device (8) realizes the longitudinal fixation of the full-wrapping fixed anti-wear device and the water-cooled wall hanging pipe (1), and does not limit the thermal expansion of the water-cooled wall hanging pipe (1). The fixing ring (6) realizes the transverse fixation of the full-wrapping fixed anti-wear device and the water wall tube panel (2) and can realize the full-wrapping anti-wear of the back wall water wall hanging tube near the water wall, and simultaneously, the heat expansion of the back wall water wall hanging tube is not limited, and the heat transfer of the back wall water wall hanging tube is not influenced due to the high heat conduction function.
Description
Technical Field
The utility model relates to an anti-wear device, in particular to a full-wrapping fixed anti-wear device applied to a heating surface of a boiler.
Background
When the pulverized coal boiler operates, pulverized coal is combusted in a hearth to generate smoke, the smoke passes through a hearth-folded flame corner horizontal flue-tail heating surface-a pin removal system-a preheater-a dust remover-a low-temperature economizer-a desulfurization system-a chimney under the action of an induced draft fan, and finally is discharged to the atmosphere, as the boiler continuously operates, the milling efficiency of a milling part of a coal mill is reduced, the abrasion and burning loss of a combustor are reduced, the performance of the combustor is reduced, the coal is in shortage, the boiler unit is complex and changeable, the deviation from the designed coal is often larger, incomplete pulverized coal combustion is caused, the dust content of the smoke is increased, a large amount of dust particles flow through a screen type heating surface and a tail heating surface of the boiler, and the impact and the scouring action of the dust particles in the smoke to the windward surface of a pipe are almost unavoidable. Especially near the high-temperature reheater at the bottom of the horizontal flue of the boiler flame corner, the final-stage reheater and the water-cooled wall at the bottom, a tail heating surface low-temperature passing/reheater tube panel elbow and front and back wall wrapping accessories are easy to form a flue gas corridor, and the flue gas flow rate is higher.
The abrasion of the tube panel of the heating surface between the tail heating surface and the tube panel of the wall cladding tube is serious, particularly the tooth clamping tube part of the screen heating surface cannot be subjected to abrasion-proof treatment, and the abrasion is most serious; only one layer of wear-resistant tile can be arranged on the outer side, and the welding seam of the welding part of the wear-resistant tile and the clamp is frequently cracked, so that the wear-resistant tile is frequently fallen off; the abrasion-proof tile cannot effectively realize comprehensive wrapping on the pipe screen in the abrasion area, and when the pipe in the pipe screen is deformed and arranged in disorder, the abrasion of the pipe is extremely serious; the wear-resistant tile has a single structure, is extremely easy to deform and twist when the boiler runs, and loses the wear-resistant effect; meanwhile, the wind speed of the folded flame angle horizontal flue at the position close to the water wall tube panel is high, but the rear wall water wall hanging tube does not have anti-abrasion measures, and the rear wall water wall hanging tube close to the water wall is extremely easy to wear and leak.
In view of the above problems in the prior art, the utility model provides a fully-wrapped fixed wear-resistant device applied to a heating surface of a boiler, which can realize fully-wrapped wear resistance to a back wall water-cooled wall hanging pipe near a water-cooled wall, does not limit the thermal expansion of the back wall water-cooled wall hanging pipe, and has a high heat conduction function without affecting the heat transfer of the back wall water-cooled wall hanging pipe.
Disclosure of Invention
The utility model provides a fully-wrapped fixed anti-wear device which can solve the problems in the prior art that the fully-wrapped anti-wear device can realize the fully-wrapped anti-wear of a back wall water-cooled wall hanging pipe near a water-cooled wall, does not limit the heated expansion of the back wall water-cooled wall hanging pipe, and has a high heat conduction function without affecting the heat transfer of the back wall water-cooled wall hanging pipe.
A fully wrapped fixed wear assembly comprising: the anti-abrasion device comprises a fully-wrapped fixed anti-abrasion device body, a fixed ring, a locking device, a water wall hanging pipe, a water wall pipe screen, a water wall hanging pipe sealing ring and a water wall pipe screen sealing ring.
The fully-wrapped fixed anti-wear device body comprises a fully-wrapped fixed anti-wear device bottom surface, fully-wrapped fixed anti-wear device end surface side surfaces, fully-wrapped fixed anti-wear device two side surfaces, fully-wrapped fixed anti-wear device slope top surfaces and fully-wrapped fixed anti-wear device inner superconducting materials. The outside of the full-wrapping fixed anti-wear device body is formed by welding a slope top surface of the full-wrapping fixed anti-wear device, a bottom surface of the full-wrapping fixed anti-wear device, end surface side surfaces of the full-wrapping fixed anti-wear device and side surfaces of two sides of the full-wrapping fixed anti-wear device.
The slope top surface of the fully-wrapped fixed anti-wear device is an upward slope surface on the side facing the flue gas flow, so that the flue gas resistance can be increased, the flue gas flow speed can be reduced, and the flushing of a water-cooled wall hanging pipe can be weakened; the middle of the slope top surface of the full-wrapping fixed anti-wear device is a plane, and an opening is formed in the plane to allow the water wall hanging pipe to pass through; the top surface of the slope of the fully-wrapped fixed anti-wear device is a downhill along one side of the flue gas flow, so that the flue gas speed can be increased, and energy is provided for subsequent flow heat exchange.
And the bottom surface of the full-wrapping fixed anti-wear device is provided with holes, so that the water wall hanging pipe passes through.
The locking device comprises two semicircular rings, namely a locking clamp A and a locking clamp B, wherein one end of the locking device arranged on the slope top surface of the fully-wrapped fixed anti-wear device is welded with the plane in the middle of the slope top surface of the fully-wrapped fixed anti-wear device, and the two semicircular rings of the locking device are connected and fixed on the upper part of the water-cooled wall hanging pipe by using a bolt fastener; one end of a locking device arranged on the bottom surface of the full-wrapping fixed anti-wear device is welded with the bottom surface of the full-wrapping fixed anti-wear device, and a lock clamp A and a lock clamp B are connected and fixed at the lower part of the water-cooled wall hanging pipe by using a bolt fastener. The anti-abrasion device is fixed longitudinally by the aid of the full-wrapping fixing anti-abrasion device and the water-cooled wall hanging pipe, and the locking device does not limit thermal expansion of the water-cooled wall hanging pipe, so that the water-cooled wall hanging pipe longitudinally stretches in the full-wrapping fixing anti-abrasion device.
The water-cooled wall hanging pipe sealing ring is arranged on the plane in the middle of the slope top surface of the water-cooled wall hanging pipe and the slope top surface of the fully-wrapped fixed anti-wear device and the outer wall of the water-cooled wall hanging pipe connected with the bottom surface of the fully-wrapped fixed anti-wear device, so that smoke is prevented from leaking into the fully-wrapped fixed anti-wear device.
The side surface of the end face of the fully-wrapped fixed anti-abrasion device is provided with holes, so that the water wall tube panel passes through. The full-wrapping fixed anti-wear device is transversely fixed with the water wall tube panel, the fixing ring is welded with the water wall tube panel, and then the fixing ring is welded with the side face of the end face of the full-wrapping fixed anti-wear device. Therefore, the welding area of the end face side face of the anti-wear device is increased by the aid of the fixing ring, the end face side face of the anti-wear device is welded with the fixing ring, damage to the outer wall of the water wall tube panel caused by direct welding with the water wall tube panel is avoided, and the anti-wear device is convenient to replace and weld with the fixing ring when the end face side face of the anti-wear device is fully wrapped and fixed in a broken mode. The fixed ring realizes the transverse fixation of the full-wrapping fixed anti-wear device and the water wall tube panel and protects the water wall tube panel, and simultaneously is convenient for replacing the full-wrapping fixed anti-wear device.
The water wall tube panel sealing ring is sleeved on the outer wall of the water wall tube panel connected with the side surface of the end face of the full-wrapping fixed anti-wear device, so that smoke is prevented from leaking into the full-wrapping fixed anti-wear device.
The inner superconducting material of the fully-wrapped fixed anti-wear device is arranged on the slope top surface of the fully-wrapped fixed anti-wear device, the bottom surface of the fully-wrapped fixed anti-wear device, the side surfaces of the end surfaces of the fully-wrapped fixed anti-wear device and the side surfaces of the two sides of the fully-wrapped fixed anti-wear device, and the side surfaces of the two sides of the fully-wrapped fixed anti-wear device are surrounded into a cavity of the fully-wrapped fixed anti-wear device body through welding. The convection heat exchange heat of the flue gas is conducted to the medium in the water wall hanging pipe and the water wall pipe screen, so that the heat exchange is enhanced, and meanwhile, the flue gas is prevented from leaking into the whole-wrapping fixed anti-wear device.
The whole-wrapping fixed anti-wear device can be arranged in groups, the middle of each group is welded and fixed by the fixing support, and the two ends of the fixing support can be arranged in an arc shape so as to reduce wind resistance.
The technical scheme provided by the utility model not only protects the most easily worn part of the water wall hanging pipe and the water wall pipe screen in all aspects, but also does not influence the heat transfer of the smoke, and the fully-wrapped fixed wear-resistant device is convenient to separate from the water wall hanging pipe and the water wall pipe screen after being worn, and is convenient to replace.
Drawings
FIG. 1 is a front view of a fully wrapped fixed wear protection device
FIG. 2 is a right side view of the fully wrapped fixed wear assembly
FIG. 3 is a block layout of a fully wrapped fixed wear assembly
Detailed Description
A fully wrapped fixed wear assembly comprising: the full-wrapping fixed anti-abrasion device body 3, the fixed ring 6, the locking device 8, the water wall hanging pipe 1, the water wall pipe screen 2, the water wall hanging pipe sealing ring 5 and the water wall pipe screen sealing ring 4.
The full-wrapping fixed anti-wear device body 3 comprises a full-wrapping fixed anti-wear device bottom surface 304, full-wrapping fixed anti-wear device end surface side surfaces 301, full-wrapping fixed anti-wear device two side surfaces 302, full-wrapping fixed anti-wear device slope top surfaces 303, and full-wrapping fixed anti-wear device inner superconducting material 7.
The outside of the full-wrapping fixed anti-wear device body 3 is formed by welding a slope top surface 303 of the full-wrapping fixed anti-wear device, a bottom surface 304 of the full-wrapping fixed anti-wear device, end surface side surfaces 301 of the full-wrapping fixed anti-wear device and side surfaces 302 of two sides of the full-wrapping fixed anti-wear device; the inner superconducting material 7 is arranged in the cavity of the whole-package fixed anti-wear device body 3 which is surrounded by welding.
The slope top surface 303 of the full-wrapping fixed anti-abrasion device is an upward slope on the side facing the flue gas flow; the middle of the slope top surface 303 of the full-wrapping fixed anti-wear device is a plane, and an opening is formed in the plane to allow the water-cooled wall hanging pipe 1 to pass through; the slope top surface 303 of the fully-wrapped fixed anti-abrasion device is downward along one side of the smoke flow.
The bottom surface 304 of the fully-wrapped fixed anti-abrasion device is provided with holes, so that the water-cooled wall hanging pipe 1 passes through.
The locking device 8 comprises two semicircular rings, namely a locking clamp A801 and a locking clamp B802, wherein one end of the locking device 8 arranged on the slope top surface 303 of the full-wrapping fixed anti-wear device is welded with the plane in the middle of the slope top surface 303 of the full-wrapping fixed anti-wear device, and the two semicircular rings of the locking device 8 are fixedly connected to the upper part of the water-cooled wall hanging pipe 1 through a bolt fastener 803; one end of a locking device 8 arranged on the bottom surface 304 of the full-wrapping fixed anti-wear device is welded with the bottom surface 304 of the full-wrapping fixed anti-wear device, and a lock clamp A801 and a lock clamp B802 are fixedly connected to the lower portion of the water-cooled wall hanging pipe 1 through a bolt fastener 803.
The water wall hanging pipe sealing ring 5 is arranged on the outer wall of the water wall hanging pipe 1, which is connected with the plane in the middle of the slope top surface 303 of the fully-wrapped fixed anti-wear device and the bottom surface 304 of the fully-wrapped fixed anti-wear device.
The side 301 of the end face of the fully-wrapped fixed anti-abrasion device is provided with holes, so that the water wall tube panel 2 passes through. The full-wrapping fixed anti-wear device is transversely fixed with the water wall tube panel 2, the fixed ring 6 is welded with the water wall tube panel 2, and then the fixed ring 6 is welded with the end face side 301 of the full-wrapping fixed anti-wear device. The water wall tube panel sealing ring 4 is sleeved on the outer wall of the water wall tube panel 2, which is connected with the end face side 301 of the full-wrapping fixed anti-wear device.
The whole-wrapping fixed anti-wear device can be arranged in groups, the middle of each group is fixed by a fixed bracket through welding 9, and two ends of the fixed bracket 9 can be arranged in an arc shape.
The technical implementation scheme of the fully-wrapped fixed wear-resistant device can also be used for solving the wear-resistant problem of the screen type superheater, the final-stage superheater, the screen type reheater, the final-stage reheater, the low-temperature superheater and the low-temperature reheater, and guaranteeing long-term safe and stable operation of the boiler unit.
Claims (4)
1. The utility model provides a fixed abrasionproof device of full parcel, includes fixed abrasionproof device body (3) of full parcel, solid fixed ring (6), locking device (8), water wall hanger pipe (1), water wall tube panel (2), water wall hanger pipe sealing ring (5), water wall tube panel sealing ring (4), its characterized in that: the full-wrapping fixed anti-wear device body (3) comprises a full-wrapping fixed anti-wear device bottom surface (304), full-wrapping fixed anti-wear device end surface side surfaces (301), full-wrapping fixed anti-wear device two side surfaces (302), full-wrapping fixed anti-wear device slope top surfaces (303) and full-wrapping fixed anti-wear device inner superconducting materials (7), wherein the outer part of the full-wrapping fixed anti-wear device body (3) is formed by welding the full-wrapping fixed anti-wear device slope top surfaces (303), the full-wrapping fixed anti-wear device bottom surface (304), the full-wrapping fixed anti-wear device end surface side surfaces (301) and the full-wrapping fixed anti-wear device two side surfaces (302); the internal superconducting material (7) is arranged in a cavity of the fully-wrapped fixed anti-wear device body (3) which is surrounded by welding.
2. The fully wrapped fixed wear arrangement of claim 1, wherein: the slope top surface (303) of the fully-wrapped fixed anti-wear device is provided with an ascending slope on the side facing the flue gas flow; the middle of the slope top surface (303) of the full-wrapping fixed anti-wear device is a plane, and holes are formed in the plane to allow the water-cooled wall hanging pipe (1) to pass through; the slope top surface (303) of the fully-wrapped fixed anti-abrasion device is downward along one side of the smoke flow.
3. The fully wrapped fixed wear arrangement of claim 1, wherein: the locking device (8) comprises two semicircular rings, namely a locking card A (801) and a locking card B (802); one end of a locking device (8) arranged on the slope top surface (303) of the full-wrapping fixed anti-wear device is welded with the plane in the middle of the slope top surface (303) of the full-wrapping fixed anti-wear device; the locking clamp A (801) and the locking clamp B (802) are connected and fixed on the upper part of the water-cooled wall hanging pipe (1) by using a bolt fastener (803); one end of a locking device (8) arranged on the bottom surface (304) of the full-wrapping fixed anti-wear device is welded with the bottom surface (304) of the full-wrapping fixed anti-wear device, and a lock clamp A (801) and a lock clamp B (802) are connected and fixed at the lower part of the water-cooled wall hanging pipe (1) by using a bolt fastener (803).
4. The fully wrapped fixed wear arrangement of claim 1, wherein: the water-cooled wall hanging pipe sealing ring (5) is sleeved on the outer wall of the water-cooled wall hanging pipe (1) which is connected with the middle plane of the slope top surface (303) of the fully-wrapped fixed anti-wear device and the bottom surface (304) of the fully-wrapped fixed anti-wear device; the water wall tube panel sealing ring (4) is sleeved on the outer wall of the water wall tube panel (2) which is connected with the end face side face (301) of the full-wrapping fixed anti-wear device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222672256.XU CN219300795U (en) | 2022-10-11 | 2022-10-11 | Full-wrapping fixed wear-resistant device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222672256.XU CN219300795U (en) | 2022-10-11 | 2022-10-11 | Full-wrapping fixed wear-resistant device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219300795U true CN219300795U (en) | 2023-07-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222672256.XU Active CN219300795U (en) | 2022-10-11 | 2022-10-11 | Full-wrapping fixed wear-resistant device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219300795U (en) |
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2022
- 2022-10-11 CN CN202222672256.XU patent/CN219300795U/en active Active
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