CN113417848A - Heat shield with ceramic fiber structure - Google Patents
Heat shield with ceramic fiber structure Download PDFInfo
- Publication number
- CN113417848A CN113417848A CN202110741242.6A CN202110741242A CN113417848A CN 113417848 A CN113417848 A CN 113417848A CN 202110741242 A CN202110741242 A CN 202110741242A CN 113417848 A CN113417848 A CN 113417848A
- Authority
- CN
- China
- Prior art keywords
- heat shield
- heat
- support ring
- ceramic fiber
- motor
- 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.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 title claims abstract description 22
- 239000000835 fiber Substances 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 239000012774 insulation material Substances 0.000 claims abstract description 9
- 239000000498 cooling water Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 6
- 238000001816 cooling Methods 0.000 abstract description 6
- 238000009413 insulation Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 abstract description 3
- 238000012423 maintenance Methods 0.000 abstract description 2
- 238000012546 transfer Methods 0.000 abstract description 2
- 238000004804 winding Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000004321 preservation Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 230000002153 concerted effect Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/08—Cooling; Heating; Preventing freezing
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B17/00—Pumps characterised by combination with, or adaptation to, specific driving engines or motors
- F04B17/03—Pumps characterised by combination with, or adaptation to, specific driving engines or motors driven by electric motors
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/04—Casings or enclosures characterised by the shape, form or construction thereof
- H02K5/10—Casings or enclosures characterised by the shape, form or construction thereof with arrangements for protection from ingress, e.g. water or fingers
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention designs a heat shield with a ceramic fiber structure, wherein an upper part (1) of the heat shield is welded and fixed with a lower part (2) of the heat shield, a support ring (3) is arranged on the outer edge between the upper part (1) of the heat shield and the lower part (2) of the heat shield, an inner cavity formed by the upper part (1) of the heat shield, the lower part (2) of the heat shield and the inner side of the support ring (3) is filled with a ceramic fiber (4) heat insulation material, the support ring (3) is of a two-petal structure, and the two petals of the support ring (3) are connected by a connecting plate (11). The invention adopts the characteristics of high temperature resistance, low heat conductivity coefficient and the like of the ceramic fiber, reduces heat transfer, can effectively separate high-temperature boiler water in the pump shell from water in the motor cavity, effectively insulates heat by the heat shield, avoids the influence of the high-temperature boiler water on the operation of the motor, increases the operation safety, reduces the failure rate and saves the maintenance cost. The invention has wide application range, is used for heat insulation of the pump shell and the motor of the supercritical and supercritical furnace water pump motors without air cooling of indoor power stations, and can be suitable for the heat shield with the structure.
Description
The technical field is as follows:
the invention relates to a heat shield with a ceramic fiber structure.
Background art:
the furnace water pump motor and the pump shell are separated by the heat shield, the pump shell and the motor are divided into two 22MPa isobaric chambers, the heat shield bears the same pressure, the temperature of high-temperature furnace water in the pump shell is about 300 ℃, the operating temperature of the motor is below 60 ℃, the high-temperature furnace water in the pump shell and the water in the motor cavity are not exchanged, namely, only heat conduction is carried out, and heat circulation is avoided, wherein the heat shield is a key component on the furnace water pump and directly influences whether the motor can normally operate. This ceramic fiber structure heat shield uses ceramic fiber as thermal insulation material, and is high temperature resistant, and the coefficient of thermal conductivity is low, and thermal-insulated heat preservation is effectual, and the heat shield lower part has increased the cooling water circulation of low pressure and has cooled down simultaneously, takes away partly heat, enables motor winding safe operation under the design requirement temperature for a long time, reduces the motor fault rate.
The invention content is as follows:
the invention aims to provide a heat shield with a ceramic fiber structure, which can effectively meet the temperature of a winding when a boiler water pump motor normally operates, and due to effective heat insulation of the heat shield, the influence of high-temperature boiler water on the operation of the motor is avoided, and a good heat insulation effect is achieved.
The invention adopts the following technical scheme: the heat shield upper part (1) and the heat shield lower part (2) are welded and fixed together, a support ring (3) is arranged between the heat shield upper part (1) and the heat shield lower part (2) along the outer edge, an inner cavity formed by the heat shield upper part (1), the heat shield lower part (2) and the inner side of the support ring (3) is filled with ceramic fiber (4) heat insulation materials, the support ring (3) is of a two-petal structure, the two petals of the support ring (3) are connected by a connecting plate (11), the connecting plate (11) and the two petals of the support ring (3) are fixed by bolts (12) and spring washers (13), the heat shield lower part (2) is provided with a plurality of low-pressure internal water through holes (14) which are internally communicated with each other, the low-pressure internal water through holes (14) are sealed by screw plugs (15) outside, a low-pressure cooling water inlet pipe (6) and a water outlet pipe (7) are arranged in a cylinder of the heat shield lower part (2) to form a cooling water path with the low-pressure internal water through holes (14), the cylinder at the lower part (2) of the heat shield is internally provided with a threaded hole, the protective sleeve (16) and the lower part (2) of the heat shield are assembled in a threaded mode and are welded and fixed, the protective sleeve (16) is internally provided with a thermocouple (17), the lower part (2) of the heat shield is provided with a bolt fixing hole (8), and the upper part (1) of the heat shield is connected with the pump shell (10).
The working principle of the invention is as follows:
in the running process of the boiler water pump, the heat shield separates the high-temperature furnace water in the motor (9) and the pump shell (10), in order to prevent that the winding in the motor from being damaged by the high-temperature overheat of boiler water, fill ceramic fiber (4) in the middle of heat shield upper portion (1) and heat shield lower part (2) and be used for thermal-insulated, ceramic fiber is as thermal insulation material, high temperature resistant, the coefficient of thermal conductivity is low, thermal-insulated heat preservation is effectual, thereby prevent that the high temperature of boiler water pump shell end from transmitting inside the motor, damage the motor winding, do the protection with support ring (3) after ceramic fiber (4) thermal insulation material is filled, guarantee ceramic fiber (4) fine and close reinforcing thermal-insulated effect. The two ends of the support ring (3) are matched with the rabbets of the upper part and the lower part of the heat shield, so that the phenomenon that the resultant force of the pump shell and the motor handle is too large and the main welding seam of the upper part (1) and the lower part (2) of the heat shield is stretched to break is prevented. Meanwhile, the lower part (2) of the heat shield is added with low-pressure cooling water for circulating cooling, a part of heat is taken away by the cooling heat shield, and the cooling heat shield reaches a cooling allowable value, so that a motor winding can safely operate at a design required temperature for a long time, and the failure rate of the motor is reduced.
The invention has the technical effects that:
(1) according to the invention, the ceramic fiber is adopted as the heat insulation material, and due to the characteristics of high temperature resistance, low heat conductivity coefficient and the like of the ceramic fiber, the heat transfer is reduced, the high-temperature boiler water in the pump shell can be effectively separated from the water in the motor cavity, the heat shield effectively insulates heat, the influence of the high-temperature boiler water on the operation of the motor is avoided, the operation safety is improved, the failure rate is reduced, and the maintenance cost is saved.
(2) Structurally, the protection is done with the support ring after ceramic fibre thermal insulation material fills, at first guarantees the thermal-insulated effect of the fine and close reinforcing of ceramic fibre, and secondly support ring both ends and heat shield upper and lower part tang cooperation prevent that pump case and motor from making a concerted effort too big, stretch so that the fracture to the main welding seam of heat shield upper portion and heat shield lower part, play limiting displacement, improved factor of safety simultaneously, guarantee the whole integrality of heat shield.
The invention has wide application range, is used for heat insulation of the pump shell and the motor of the water pump motor of the supercritical and ultra-supercritical furnace without air cooling of an indoor power station, and can be suitable for the heat shield with the structure.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic view of a heat shield configuration of the present invention.
Fig. 3 is a view a-a of fig. 1.
The specific implementation mode is as follows:
modifications of the following are in accordance with the amended claims
As shown in figure 1, a heat shield with ceramic fiber structure, wherein an upper part 1 of the heat shield is welded and fixed with a lower part 2 of the heat shield, a support ring 3 is arranged between the upper part 1 of the heat shield and the lower part 2 of the heat shield, an inner cavity formed by the upper part 1 of the heat shield, the lower part 2 of the heat shield and the inner side of the support ring 3 is filled with ceramic fiber 4 heat insulation material, the support ring 3 is in a two-piece structure, two pieces of the support ring 3 are connected by a connecting plate 11, the connecting plate 11 and the two pieces of the support ring 3 are fixed by bolts 12 and spring washers 13, the lower part 2 of the heat shield is provided with a plurality of low-pressure internal water through holes 14 which are mutually communicated, as shown in figure 3, the external part of the low-pressure internal water through holes 14 is blocked by screw plugs 15, a low-pressure cooling water inlet pipe 6 and an outlet pipe 7 are formed with the low-pressure internal water through holes 14 in a cylinder of the lower part 2 of the heat shield, as shown in figure 2, threaded holes are formed in the cylinder of the lower part 2 of the heat shield, the protective sleeve 16 is assembled with the lower part 2 of the heat shield in a threaded mode and welded and fixed, a thermocouple 17 is installed in the protective sleeve 16, the lower part 2 of the heat shield is provided with a bolt fixing hole 8, and the upper part 1 of the heat shield is connected with the pump shell 10.
Claims (1)
1. A kind of ceramic fiber structure heat shield, its characteristic is: the heat shield upper part (1) and the heat shield lower part (2) are welded and fixed together, a support ring (3) is arranged between the heat shield upper part (1) and the heat shield lower part (2) along the outer edge, an inner cavity formed by the heat shield upper part (1), the heat shield lower part (2) and the inner side of the support ring (3) is filled with ceramic fiber (4) heat insulation materials, the support ring (3) is of a two-petal structure, the two petals of the support ring (3) are connected by a connecting plate (11), the connecting plate (11) and the two petals of the support ring (3) are fixed by bolts (12) and spring washers (13), the heat shield lower part (2) is provided with a plurality of low-pressure internal water through holes (14) which are internally communicated with each other, the low-pressure internal water through holes (14) are sealed by screw plugs (15) outside, a low-pressure cooling water inlet pipe (6) and a water outlet pipe (7) are arranged in a cylinder of the heat shield lower part (2) to form a cooling water path with the low-pressure internal water through holes (14), the cylinder at the lower part (2) of the heat shield is internally provided with a threaded hole, the protective sleeve (16) and the lower part (2) of the heat shield are assembled in a threaded mode and are welded and fixed, the protective sleeve (16) is internally provided with a thermocouple (17), the lower part (2) of the heat shield is provided with a bolt fixing hole (8), and the upper part (1) of the heat shield is connected with the pump shell (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741242.6A CN113417848A (en) | 2021-07-01 | 2021-07-01 | Heat shield with ceramic fiber structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110741242.6A CN113417848A (en) | 2021-07-01 | 2021-07-01 | Heat shield with ceramic fiber structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113417848A true CN113417848A (en) | 2021-09-21 |
Family
ID=77717419
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110741242.6A Pending CN113417848A (en) | 2021-07-01 | 2021-07-01 | Heat shield with ceramic fiber structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113417848A (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1395494A (en) * | 1971-06-28 | 1975-05-29 | British Oxygen Co Ltd | Vaporisers |
| FR2481761A1 (en) * | 1980-04-30 | 1981-11-06 | Klein Schanzlin & Becker Ag | THERMAL BARRIER FOR CENTRIFUGAL PUMPS WITH HIGH TEMPERATURE AND WITHOUT PRESSE-ETOUPE |
| US5626460A (en) * | 1995-03-09 | 1997-05-06 | Ksb Aktiengesellschaft | Centrifugal pump system with integrated heat barrier |
| CN201332327Y (en) * | 2009-01-21 | 2009-10-21 | 合肥皖化电机技术开发有限责任公司 | Furnace water pump motor with cooling fin air cooling type heat shield |
| EP2492511A2 (en) * | 2011-02-24 | 2012-08-29 | Torishima Pump Mfg. Co., Ltd. | Circulation pump |
| CN103352874A (en) * | 2013-07-02 | 2013-10-16 | 中国核动力研究设计院 | Pressure-proof heat insulation screen inside full-sealing pump |
| CN203951321U (en) * | 2014-06-12 | 2014-11-19 | 合肥皖化电机技术开发有限责任公司 | There is the boiler pump motor of two heat shielding structures |
| CN206830488U (en) * | 2017-06-30 | 2018-01-02 | 绍兴市上虞金泰风机有限公司 | High temperature circulation blower fan |
| CN207145256U (en) * | 2017-07-21 | 2018-03-27 | 合肥皖化电机技术开发有限责任公司 | A kind of new and effective stove water pump |
| CN109038957A (en) * | 2017-06-11 | 2018-12-18 | 何巨堂 | The shield electric machine and its shielded electric pump of cold house outside electric machine casing inner stator half way |
| CN210509749U (en) * | 2019-07-24 | 2020-05-12 | 上海阿波罗智能装备科技有限公司 | Air heat shield for small reactor main pump |
| CN111810456A (en) * | 2020-07-20 | 2020-10-23 | 佳木斯电机股份有限公司 | Middle heat insulation structure for main helium fan equipment |
| CN212360285U (en) * | 2019-12-21 | 2021-01-15 | 合肥皖化电机技术开发有限责任公司 | Non-leakage furnace water circulating pump |
-
2021
- 2021-07-01 CN CN202110741242.6A patent/CN113417848A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1395494A (en) * | 1971-06-28 | 1975-05-29 | British Oxygen Co Ltd | Vaporisers |
| FR2481761A1 (en) * | 1980-04-30 | 1981-11-06 | Klein Schanzlin & Becker Ag | THERMAL BARRIER FOR CENTRIFUGAL PUMPS WITH HIGH TEMPERATURE AND WITHOUT PRESSE-ETOUPE |
| US5626460A (en) * | 1995-03-09 | 1997-05-06 | Ksb Aktiengesellschaft | Centrifugal pump system with integrated heat barrier |
| CN201332327Y (en) * | 2009-01-21 | 2009-10-21 | 合肥皖化电机技术开发有限责任公司 | Furnace water pump motor with cooling fin air cooling type heat shield |
| EP2492511A2 (en) * | 2011-02-24 | 2012-08-29 | Torishima Pump Mfg. Co., Ltd. | Circulation pump |
| CN103352874A (en) * | 2013-07-02 | 2013-10-16 | 中国核动力研究设计院 | Pressure-proof heat insulation screen inside full-sealing pump |
| CN203951321U (en) * | 2014-06-12 | 2014-11-19 | 合肥皖化电机技术开发有限责任公司 | There is the boiler pump motor of two heat shielding structures |
| CN109038957A (en) * | 2017-06-11 | 2018-12-18 | 何巨堂 | The shield electric machine and its shielded electric pump of cold house outside electric machine casing inner stator half way |
| CN206830488U (en) * | 2017-06-30 | 2018-01-02 | 绍兴市上虞金泰风机有限公司 | High temperature circulation blower fan |
| CN207145256U (en) * | 2017-07-21 | 2018-03-27 | 合肥皖化电机技术开发有限责任公司 | A kind of new and effective stove water pump |
| CN210509749U (en) * | 2019-07-24 | 2020-05-12 | 上海阿波罗智能装备科技有限公司 | Air heat shield for small reactor main pump |
| CN212360285U (en) * | 2019-12-21 | 2021-01-15 | 合肥皖化电机技术开发有限责任公司 | Non-leakage furnace water circulating pump |
| CN111810456A (en) * | 2020-07-20 | 2020-10-23 | 佳木斯电机股份有限公司 | Middle heat insulation structure for main helium fan equipment |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210921 |