CN113524124A - Double-thread hollow screw fastening hydraulic tool for wet winding motor - Google Patents
Double-thread hollow screw fastening hydraulic tool for wet winding motor Download PDFInfo
- Publication number
- CN113524124A CN113524124A CN202110788470.9A CN202110788470A CN113524124A CN 113524124 A CN113524124 A CN 113524124A CN 202110788470 A CN202110788470 A CN 202110788470A CN 113524124 A CN113524124 A CN 113524124A
- Authority
- CN
- China
- Prior art keywords
- double
- winding motor
- thread hollow
- wet winding
- hollow screw
- 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
- 238000004046 wet winding Methods 0.000 title claims abstract description 31
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 239000004964 aerogel Substances 0.000 claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- 238000005485 electric heating Methods 0.000 claims abstract description 5
- 238000010438 heat treatment Methods 0.000 abstract description 12
- 230000008602 contraction Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000007921 spray Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B33/00—Hand tools not covered by any other group in this subclass
-
- 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
- F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
- F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
- F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
- F16B35/041—Specially-shaped shafts
Abstract
The invention designs a water pressure tool for fastening a double-thread hollow screw of a wet winding motor, wherein the double-thread hollow screw (2) penetrates through a false pump shell (1), a motor heat shield (6) and a wet winding motor (5), a main nut (3) and a sealing gasket (4) are assembled at two ends of the double-thread hollow screw (2), the wet winding motor heat shield (6) is provided with a water outlet flange (7), a layer of aerogel felt (19) is wound on the outer side of the double-thread hollow screw (2), the outer layer of the aerogel felt (19) is an aluminum sheet (20) layer, and an O-shaped sealing ring (11) is arranged between the water outlet flange (7) and a first tool blind plate (8). The invention adopts the heating mode of the electric heating rod in the double-thread hollow main screw to complete the stretching of the screw, the electric switch controls the heating temperature and the heating time to achieve the effect of controlling the stretching size of the screw, and the sealing of the false pump shell and the motor for the water pressure of the wet winding motor is completed by the principle of expansion with heat and contraction with cold after the nut is fastened and the temperature of the screw is reduced to room temperature.
Description
The technical field is as follows:
the invention relates to a double-thread hollow screw fastening hydraulic tool for a wet winding motor.
Background art:
the furnace water circulating pump is a completely sealed integral unit consisting of a wet winding motor and a water pump driven by the wet winding motor, the furnace water pump and a wet winding motor matched with the furnace water pump are one of key equipment of a forced circulation boiler, the wet winding motor and a pump part are combined into static sealing connection, the motor and the pump bear the same water pressure of a boiler cavity under the working state to be 22-33 Mpa, the aim of independently checking the water pressure of the wet winding motor is mainly to check a winding and a joint thereof, lead sealing and all pressure boundary parts under test pressure, whether a winding system can maintain an insulation resistance value before pressure test, whether all the pressure boundary parts leak or not, a traditional water pressure mode is a mode that a false pump shell and a wet winding motor base are fixed by using a common screw, a manual spray gun heating mode is adopted, the screw heating temperature is higher, the service life of the screw is low, and the screw heating degree and the deformation length of the screw cannot be accurately controlled by a spray gun heating mode, the safety coefficient is low, and the screw rod is easy to lose elasticity and cannot be used continuously after being repeatedly heated for a long time; the other type is fastened by a hydraulic torque spanner, wherein the spanner is used for a tool spanner matched with a main nut, the occupied space is large, bolts are densely fixed for a high-pressure wet winding motor, the space between every two nuts is limited and is not suitable for use, meanwhile, the motor needs to be vertically placed during water pressure, a matched tool supporting rack is needed, the cost is high, and the operation is complex.
The invention content is as follows:
the invention aims to provide a double-thread hollow screw fastening hydraulic tool for a wet winding motor, which not only enables the screw to be stressed uniformly, but also saves space, does not need tools such as a support rack and the like and saves cost by the principle of expansion with heat and contraction with cold.
The invention adopts the following technical scheme that a double-thread hollow screw fastening hydraulic tool for a wet winding motor is characterized in that a double-thread hollow screw (2) penetrates through a false pump shell (1), a motor heat shield (6) and a wet winding motor (5), a main nut (3) and a sealing gasket (4) are assembled at two ends of the double-thread hollow screw (2), the wet winding motor heat shield (6) is provided with a water outlet flange (7), a layer of aerogel felt (19) is wound on the outer side of the double-thread hollow screw (2), the outer layer of the aerogel felt (19) is an aluminum skin (20) layer, an O-shaped sealing ring (11) is arranged between the water outlet flange (7) and a first tool blind plate (8), a bolt (9) and a nut (10) are fixedly connected with a through hole of the first tool blind plate (8) through the water outlet flange (7), an O-shaped sealing ring (17) is arranged between an upper water inlet flange (13) of a bottom cover (12) of the wet winding motor and a second tool blind plate (14), a stud (15) and a nut (16) are fixedly connected with a through hole of a second tool blind plate (14) through a threaded hole of a water inlet flange (13), a sealing joint (18) is tightly fastened on the tool blind plate (14), and an electric heating rod (21) is positioned in the double-thread hollow screw (2).
Working principle of the invention
The stretching of the screw rod is completed in the double-thread hollow main screw rod in an electric heating rod heating mode, the heating temperature and the heating time are controlled by an electric switch, the effect of controlling the stretching size of the screw rod is achieved, the temperature of the screw rod is cooled to room temperature after the screw rod is fastened, and the fastening of the false pump shell and the wet winding motor is completed through the principle of thermal expansion and cold contraction when the water pressure of the wet winding motor is completed, so that the wet winding motor can bear the test pressure required by the motor and cannot leak.
The invention has the technical effects that:
according to the fastening mode of the double-thread hollow screw, the heating rod is used as a heat source, the screw is heated to be uniformly extended, the nut can be fixed in place manually or by using a simple wrench after the screw is extended, the fixing force is uniform, the space is saved, the motor can be operated vertically and horizontally, supporting tools such as a rack do not need to be manufactured, the cost is saved, and the operation difficulty is reduced.
The double-thread hollow screw is adopted, so that the sealing requirement of a wet winding motor for completing a 33Mpa hydraulic test is met, in order to shorten the heating time and prevent heat loss, heat preservation measures are taken for the screw, and aerogel felts and aluminum sheets are added on the outer side of the screw.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a view taken along the line A of FIG. 1
Detailed Description
As shown in figure 1, a hydraulic tool is fastened by a double-thread hollow screw of a wet winding motor, the double-thread hollow screw 2 penetrates through a false pump shell 1, a motor heat shield 6 and a wet winding motor 5, main nuts 3 and sealing gaskets 4 are assembled at two ends of the double-thread hollow screw 2, the wet winding motor heat shield 6 is provided with a water outlet flange 7, a layer of aerogel felt 19 is wound at the outer side of the double-thread hollow screw 2, the outer layer of the aerogel felt 19 is 20 layers of aluminum sheets, after an O-shaped sealing ring 11 is arranged between the water outlet flange 7 and a first tool blind plate 8, a bolt 9 and a nut 10 are fixedly connected with a through hole of the first tool blind plate 8 through the water outlet flange 7, an O-shaped sealing ring 17 is arranged between an water inlet flange 13 on a bottom cover 12 of the wet winding motor and a second tool blind plate 14, as shown in figure 2, a double-thread stud 15 and a nut 16 are fixedly connected with a through a threaded hole of a water inlet flange 13 and a through hole of the second tool blind plate 14, the sealing joint 18 is tightly fixed on the tool blind plate 14, and the electric heating rod 21 is positioned in the double-thread hollow screw 2.
Fig. 2 shows a plan view of the double-threaded hollow screw 2 with the main nut 3 and a plan view of the second tool blank 14, the double-threaded stud 15, the nut 16 and the sealing joint 18.
Claims (1)
1. The utility model provides a wet winding motor double thread hollow screw fastening hydraulic tool which characterized by: the double-thread hollow screw (2) penetrates through a false pump shell (1), a motor heat shield (6) and a wet winding motor (5), a main nut (3) and a sealing gasket (4) are assembled at two ends of the double-thread hollow screw (2), the wet winding motor heat shield (6) is provided with a water outlet flange (7), a layer of aerogel felt (19) is wound on the outer side of the double-thread hollow screw (2), the outer layer of the aerogel felt (19) is an aluminum skin (20) layer, an O-shaped sealing ring (11) is placed between the water outlet flange (7) and a first tool blind plate (8), bolts (9) are adopted, the nut (10) is fixedly connected with a through hole of the first tool blind plate (8) through the water outlet flange (7), an O-shaped sealing ring (17) is placed between an upper water inlet flange (13) of a wet winding motor bottom cover (12) and a second tool blind plate (14), and the double-thread studs (15) and the nut (16) are adopted to be fixedly connected with a through hole of the second tool blind plate (14) through a threaded hole of the water inlet flange (13) The sealing joint (18) is tightly fastened on the tool blind plate (14), and the electric heating rod (21) is positioned in the double-thread hollow screw rod (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788470.9A CN113524124A (en) | 2021-07-13 | 2021-07-13 | Double-thread hollow screw fastening hydraulic tool for wet winding motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110788470.9A CN113524124A (en) | 2021-07-13 | 2021-07-13 | Double-thread hollow screw fastening hydraulic tool for wet winding motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113524124A true CN113524124A (en) | 2021-10-22 |
Family
ID=78098786
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110788470.9A Pending CN113524124A (en) | 2021-07-13 | 2021-07-13 | Double-thread hollow screw fastening hydraulic tool for wet winding motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113524124A (en) |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765256A (en) * | 2008-12-24 | 2010-06-30 | 西安天厚滤清技术有限责任公司 | Automatic temperature control type electric heating stick |
| CN201712132U (en) * | 2010-07-15 | 2011-01-19 | 王维东 | Screw rod of injection molding machine |
| KR20110102600A (en) * | 2010-03-11 | 2011-09-19 | 한전케이피에스 주식회사 | End play measuring tool of reactor coolant pump |
| CN203295354U (en) * | 2013-05-14 | 2013-11-20 | 常州循天节能科技有限公司 | Heat preservation structural part for toughened glass heating furnace |
| CN104467323A (en) * | 2014-12-09 | 2015-03-25 | 哈尔滨电气动力装备有限公司 | Paint dipping tool device for large shield motor stator winding |
| CN104550734A (en) * | 2015-01-14 | 2015-04-29 | 洛阳鹏起实业有限公司 | Dewaxing method for investment casting, and special screw device for implementing method |
| CN204991160U (en) * | 2015-08-13 | 2016-01-20 | 中广核核电运营有限公司 | Main pump hydraulic component's static pressure test device |
| CN206617362U (en) * | 2017-03-28 | 2017-11-07 | 四川凯创机电设备有限公司 | Screw rod of screw pump with heating arrangement |
| CN107655525A (en) * | 2017-09-30 | 2018-02-02 | 苏州海陆重工股份有限公司 | Boiler header water test unit |
| CN207509146U (en) * | 2017-11-03 | 2018-06-19 | 广州柴油机厂股份有限公司 | A kind of stud fastening tool |
| CN110136854A (en) * | 2019-05-30 | 2019-08-16 | 沈阳鼓风机集团申蓝机械有限公司 | A kind of reactor coolant pump water test unit |
| CN211261801U (en) * | 2020-01-10 | 2020-08-14 | 荣成市元烨锻造有限公司 | Heat insulation device for heating furnace |
| CN212007778U (en) * | 2020-05-28 | 2020-11-24 | 东方法马通核泵有限责任公司 | Main bolt main nut hydrostatic pressure test device and system of nuclear power main pump |
| CN212683768U (en) * | 2020-06-29 | 2021-03-12 | 国家电网有限公司 | Special tool for dismounting and mounting rotating wheel bolt of water turbine |
-
2021
- 2021-07-13 CN CN202110788470.9A patent/CN113524124A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101765256A (en) * | 2008-12-24 | 2010-06-30 | 西安天厚滤清技术有限责任公司 | Automatic temperature control type electric heating stick |
| KR20110102600A (en) * | 2010-03-11 | 2011-09-19 | 한전케이피에스 주식회사 | End play measuring tool of reactor coolant pump |
| CN201712132U (en) * | 2010-07-15 | 2011-01-19 | 王维东 | Screw rod of injection molding machine |
| CN203295354U (en) * | 2013-05-14 | 2013-11-20 | 常州循天节能科技有限公司 | Heat preservation structural part for toughened glass heating furnace |
| CN104467323A (en) * | 2014-12-09 | 2015-03-25 | 哈尔滨电气动力装备有限公司 | Paint dipping tool device for large shield motor stator winding |
| CN104550734A (en) * | 2015-01-14 | 2015-04-29 | 洛阳鹏起实业有限公司 | Dewaxing method for investment casting, and special screw device for implementing method |
| CN204991160U (en) * | 2015-08-13 | 2016-01-20 | 中广核核电运营有限公司 | Main pump hydraulic component's static pressure test device |
| CN206617362U (en) * | 2017-03-28 | 2017-11-07 | 四川凯创机电设备有限公司 | Screw rod of screw pump with heating arrangement |
| CN107655525A (en) * | 2017-09-30 | 2018-02-02 | 苏州海陆重工股份有限公司 | Boiler header water test unit |
| CN207509146U (en) * | 2017-11-03 | 2018-06-19 | 广州柴油机厂股份有限公司 | A kind of stud fastening tool |
| CN110136854A (en) * | 2019-05-30 | 2019-08-16 | 沈阳鼓风机集团申蓝机械有限公司 | A kind of reactor coolant pump water test unit |
| CN211261801U (en) * | 2020-01-10 | 2020-08-14 | 荣成市元烨锻造有限公司 | Heat insulation device for heating furnace |
| CN212007778U (en) * | 2020-05-28 | 2020-11-24 | 东方法马通核泵有限责任公司 | Main bolt main nut hydrostatic pressure test device and system of nuclear power main pump |
| CN212683768U (en) * | 2020-06-29 | 2021-03-12 | 国家电网有限公司 | Special tool for dismounting and mounting rotating wheel bolt of water turbine |
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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 |
Application publication date: 20211022 |
|
| RJ01 | Rejection of invention patent application after publication |