CN201991840U - Water feed pump assembling and disassembling tool - Google Patents
Water feed pump assembling and disassembling tool Download PDFInfo
- Publication number
- CN201991840U CN201991840U CN2011200499083U CN201120049908U CN201991840U CN 201991840 U CN201991840 U CN 201991840U CN 2011200499083 U CN2011200499083 U CN 2011200499083U CN 201120049908 U CN201120049908 U CN 201120049908U CN 201991840 U CN201991840 U CN 201991840U
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- connecting plate
- hydraulic
- core bag
- thrust disc
- assembling
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Abstract
The utility model discloses a water feed pump assembling and disassembling tool, which mainly comprises a core bag assembling and disassembling device, a balance drum and thrust disc assembling and disassembling device and a hydraulic tensioning device, wherein the hydraulic tensioning device consists of a hydraulic bolt stretcher and a hydraulic pump connected with the stretcher; a roller wheel device in the core bag assembling and disassembling device is horizontally fixed on the whole body of the water feed pump, and a guide rail bracket is arranged on a pump shaft head and can move horizontally through a roller wheel on the roller wheel device; and a hydraulic system in the balance drum and thrust disc assembling and disassembling device is connected with an oil filling opening, a fixing bolt in a mechanical device is symmetrically provided with rotation screw barrels which are controlled by a handle, a connecting plate I is vertically fixed on the rotation screw barrels, the connecting plate I is connected with a connecting plate II, and the connecting plate II is vertically fixed on a balance drum or a thrust disc. The tool has a simple structure and is convenient to operate, the workload of field personnel can be reduced, and the safety of the personnel in the assembling and disassembling process is effectively protected.
Description
Technical field
The utility model relates to a kind of dismantling device, particularly a kind of dismantling device of convenient, safe feed water pump.
Background technique
Boiler feed pump is in the thermodynamic system in thermal power plant, just like the heart in the human body impels medium constantly to work in the circulatory system, is one of capital equipment that constitutes the power station thermodynamic cycle, and the reliability and the Economy of unit operation had a significant impact.Along with the fast development of domestic thermoelectricity industry, 600MW～660MW capacity unit progressively becomes the main flow of newly-built thermoelectricity project.
Boiler feed pump must move continuously for a long time and often be in low-load and variable load operation state, and it is unavoidable therefore to go wrong.But because the spatial position of feed water pump in power plant is compact usually, and apparatus body is heavier, all needs multi agent cooperation during dismounting; And the critical role of feed water pump in the power station, in case check, maintenance or just need whole compressor emergency shutdown when changing easily damaged parts, so for power plant, loss greatly.Therefore, shorten as much as possible feed water pump the dismounting time, make things convenient for the owner to overhaul to have great positive effect for power plant.
HPT type feed water pump adopts the cartridge type double-shell structure of loosing core entirely.Its all workpiece is designed to an integrated type core bag, comprises rotor part, stator component, inlet end cap, big end cap, axle envelope, bearing and bearing bracket etc., is fixed by the bolt of cover of hydraulic loading-unloading.
The hydraulic equilibrium device of pump is balancing drum and thrust-bearing, and balancing drum has absorbed the most of end thrust that is produced by swivel assembly; Thrust-bearing absorbs remaining end thrust (thrust-bearing then is made up of thrust pad and thrust disc).In the frequent power condition changing of feed water pump, the self-regulation by this Equilibrator is with compensating axial thrust just, and also therefore Equilibrator also becomes one of parts the most easy to wear in the feed water pump.
The model utility content
The utility model at the characteristics of above-mentioned feed water pump with and the dismounting requirement, and provide a kind of install simple, easy to operate, and the dismantling device of the solid and reliable feed water pump of instrument.
In order to achieve the above object, the technical solution adopted in the utility model, a kind of dismantling device of feed water pump, this instrument mainly are made up of core bag attaching/detaching apparatus, balancing drum and thrust disc attaching/detaching apparatus and Hydranlic tensioner; Described Hydranlic tensioner is made up of hydraulic bolt tensioning jack and the oil hydraulic pump that is attached thereto; Described core bag attaching/detaching apparatus comprises rotary roller and rail brackets, and described rotary roller horizontal fixed is on the entire body of feed water pump, and rail brackets is placed in the pump shaft head, and can move horizontally by the roller on the rotary roller; Described balancing drum and thrust disc attaching/detaching apparatus are made up of hydraulic system and mechanical device, hydraulic system connects pouring orifice, mechanical device comprises fixing bolt, rotary threaded sleeve, connecting plate I and connecting plate II, be arranged with rotary threaded sleeve on the described fixing bolt, described handle is placed on the rotary threaded sleeve, and this rotary threaded sleeve is controlled by handle, and vertical fixing has a plate I on this rotary threaded sleeve, connecting plate I is connected with connecting plate II, and described connecting plate II is vertically fixed on balancing drum or the thrust disc.
Also comprise in the described core bag attaching/detaching apparatus and connect final stage stator and the core bag support block assembly of big end cap and the big end cap boom hoisting of fixedly slinging.
The utility model of obtaining according to technique scheme not only can guarantee power plant when maintenance to the controllability (common whole process only needs about 8 hours) of time; and this tools structure is simple, easy to operate; promptly can reduce Field Force's workload, also make the safety of personnel in the process of installation and removal obtain effective protection.
Description of drawings
Further specify the utility model below in conjunction with the drawings and specific embodiments.
Fig. 1 is the schematic representation of Hydranlic tensioner.
Fig. 2 is the dismounting schematic representation of core bag.
Fig. 3 is the dismounting schematic representation of thrust disc.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with concrete diagram, further set forth the utility model.
The spatial position of feed water pump in power plant is compact usually, and apparatus body is heavier, all needs multi agent cooperation during dismounting.In addition, unit must be shut down during dismounting, can cause very big loss to power plant.Therefore, when the design tool specially for attaching and detaching, and following technical requirements has been proposed:
1), installation is simple, easy to operate;
2), instrument firmly, reliable, and need to consider the spatial position of power plant;
In order to achieve the above object, the dismantling device that provides of the present utility model, this instrument mainly are made up of core bag attaching/detaching apparatus, balancing drum and thrust disc attaching/detaching apparatus and Hydranlic tensioner; Described Hydranlic tensioner is made up of hydraulic bolt tensioning jack and the oil hydraulic pump that is attached thereto; Described core bag attaching/detaching apparatus comprises rotary roller and rail brackets, and described rotary roller horizontal fixed is on the entire body of feed water pump, and rail brackets is placed in the pump shaft head, and can move horizontally by the roller on the rotary roller; Described balancing drum and thrust disc attaching/detaching apparatus are made up of hydraulic system and mechanical device, hydraulic system connects pouring orifice, mechanical device comprises fixing bolt, rotary threaded sleeve, connecting plate I and connecting plate II, be arranged with rotary threaded sleeve on the described fixing bolt, described handle is placed on the rotary threaded sleeve, and this rotary threaded sleeve is controlled by handle, and vertical fixing has a plate I on this rotary threaded sleeve, connecting plate I is connected with connecting plate II, and described connecting plate II is vertically fixed on balancing drum or the thrust disc.
Also comprise in the core bag attaching/detaching apparatus simultaneously and connect final stage stator and the core bag support block assembly of big end cap and the big end cap boom hoisting of fixedly slinging.
During the concrete dismounting of this instrument such as Fig. 1 to shown in Figure 3:
When the core bag is dismantled, at first unclamp pretension bolt 2 on the big end cap by Hydranlic tensioner.The spanner of feed water pump use in the past applies moment of torsion to nut and comes pretension bolt, but the working pressure of 600MW unit feed water pump is all very high, bolt pretightening is very big also, general each bolt 2 surpasses the stressed of 1600kN, for reducing maintainer's labor intensity, the bolt of cover of hydraulic loading-unloading is adopted in design thus.During installation, only need nut is manually tightened, then draw high system each bolt 2 is realized pretension (as shown in Figure 1) by means of a cover hydraulic bolt, the first step is by using bolt tensioning jack 3, high pressure by oil hydraulic pump output is that medium elongates the generation resiliently deformable by bolt tensioning jack with pretension bolt with hydraulic oil, after meeting the requirements of length, between nut and the big end cap certain clearance has just been arranged, then nut can have been rotated until tightening with dialling rod.Like this each bolt is operated in a certain order and got final product after whole bolts all meet the requirements of active force.Hydraulic pressure installation can give bolt and accurately loads in addition, and the tight power that makes High Pressure Seal Washer between big end cap 1 and outer cylinder body be subjected on whole circumference is uniformly, has guaranteed sealing.Because load can add gradually that the possibility of big end cap 1 distortion is minimum.
As shown in Figure 2, on big end cap, fasten suitable chain sling 4, and tie up to by suspension hook 6 on the hanger 5 of big end cap.The operation lifting appliance makes the chain sling tension, and just in time can bear the weight of core bag.Make a height adjustable rolling wheel support 8 and be fixed on the cylindrical shell 9, support 7 at pump shaft head 12 mounting strap guide rails, this support 7 can be along 10 horizontal slips of the roller on the rolling wheel support 8, make core wraps in can a supporting, location and motion in the movement process of extracting cylindrical shell out guiding, and remain the core bag and be on the center line, and the action of can not extracting or pack into makes the generation damage of the bump of core bag and inner barrel.Extract the core bag slowly, carefully out, arrive certain position up to the core bag, mounting core bag support block assembly connects final stage stator and big end cap.Afterwards, continue under the support of chain sling and support, to extract the core bag slowly, carefully out, break away from cylindrical shell fully until it.
Generally speaking, feed water pump only just can be dismantled the core bag when overhaul phase or generation major break down.But Equilibrator parts difference, feed water pump moves under multi-operating mode, and the Equilibrator wearing and tearing are bigger, especially thrust pad and thrust disc part, be subjected to the influence of the operating conditions of feed water pump and external factor very big, what many contingent problems all can be direct or indirect is reflected on the thrust-bearing.Therefore, the dismounting of thrust disc, the balancing drum frequency of comparing is higher, and that special tool should be tried one's best is simple, be convenient to operation.
The feed water pump of existing 600MW～660MW has much all adopted no key to connect at epitrochanterian parts, cuts down the consumption of energy thereby can reduce diameter of axle raising water conservancy efficient like this.But brought the place of a lot of inconvenience to dismounting.With the thrust disc in the feed water pump thrust-bearing is example.Have key to connect if adopt, the magnitude of interference that cooperates with axle is less, only needs transition fit to get final product, and is heated to 160 ℃ during dismounting and may expand to the size that needs; Yet the no key of existing employing connects, and cooperates the very big magnitude of interference of needs with axle, need be heated to 210 ℃ ~ 250 ℃ and just can reach the swell increment that needs.If this external dismounting the time is heated to the required temperature that expands, because of it has been installed on the axle, also main shaft is heated in the time of heated components, it will produce negative influence to axle, comprises the appearance of problem such as distortion.
In order to address this problem, the utility model utilizes the special tool of super high pressure hydraulic system in conjunction with mechanical device, as shown in Figure 3.
The super high pressure hydraulic system mainly by night display device 28, ultrahigh pressure hand pump 29, extreme pressure hose 27 and ultrahigh pressure joint 26 form (this system is a prior art, is not given unnecessary details) here.
Fixed bolt 13 in the mechanical device is connected with main shaft 24, and being provided with of symmetry can be along its rotary threaded sleeve that moves 30 on it, and the swivel nut 14 that moves through of this swivel nut is controlled by handle 15; Pass through locking nut 16 and thrust-bearing 17 fixed connecting plates 18 on the rotary threaded sleeve simultaneously, this connects 18 by connecting double-screw bolt 19 in connecting plate 20 connections, it is fixing in connecting plate 18 by nut 31 to connect double-screw bolt 19, connecting plate 20 is fixed on the thrust disc 25 by fixing bolt 21 simultaneously, and its bottom is connected with the top of main shaft by snap ring 22.
This instrument when running, at first get on the bus out one section and be slightly larger than the internal diameter of axle at the internal diameter of thrust disc, it is poor simultaneously the internal diameter two ends of thrust disc to be made into a spot of diameter of axle.Form an airtight pressure chamber like this.One cover mechanical device then is installed on the top of axle.Use connecting bolt that two connecting plates are fixed together, then the pouring orifice on the thrust disc is connected with oil pump and pressurizes.When after having hydraulic oil to emerge in another pouring orifice, not having bubble, screw plug is tightened.Persistent pressure then when the pressure that reaches regulation (80MPa), is just kept pressure a period of time (being generally about 10 minutes), makes thrust disc produce and expand being subjected to internal high pressure oil effect back.Rotatable handles drive this moment rotary threaded sleeve is slowly pulled out thrust disc by connecting plate, breaks away from main shaft.So dismounting, first has solved the drawback that needs the high temperature heating, has protected main shaft.Second since hydraulic pressure when dismounting the thrust that produces very big, suddenly breaking away from main shaft when being easy to cause thrust disc to expand flies out again, cause personal injury, and adopted mechanical dismounting device just thrust disc firmly can be controlled on the instrument, the dismounting of safety under staff's control.
More than show and described basic principle of the present utility model and major character and advantage of the present utility model.The technician of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof
Claims (2)
1. the dismantling device of a feed water pump, this instrument mainly is made up of core bag attaching/detaching apparatus, balancing drum and thrust disc attaching/detaching apparatus and Hydranlic tensioner; It is characterized in that described Hydranlic tensioner is made up of hydraulic bolt tensioning jack and the oil hydraulic pump that is attached thereto; Described core bag attaching/detaching apparatus comprises rotary roller and rail brackets, and described rotary roller horizontal fixed is on the entire body of feed water pump, and rail brackets is placed in the pump shaft head, and can move horizontally by the roller on the rotary roller; Described balancing drum and thrust disc attaching/detaching apparatus are made up of hydraulic system and mechanical device, hydraulic system connects pouring orifice, mechanical device comprises fixing bolt, rotary threaded sleeve, connecting plate I and connecting plate II, be arranged with rotary threaded sleeve on the described fixing bolt, described handle is placed on the rotary threaded sleeve, and this rotary threaded sleeve is controlled by handle, and vertical fixing has a plate I on this rotary threaded sleeve, connecting plate I is connected with connecting plate II, and described connecting plate II is vertically fixed on balancing drum or the thrust disc.
2. the dismantling device of 1 described a kind of feed water pump as requested is characterized in that, also comprises in the described core bag attaching/detaching apparatus connecting final stage stator and the core bag support block assembly of big end cap and the big end cap boom hoisting of fixedly slinging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200499083U CN201991840U (en) | 2011-02-28 | 2011-02-28 | Water feed pump assembling and disassembling tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200499083U CN201991840U (en) | 2011-02-28 | 2011-02-28 | Water feed pump assembling and disassembling tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201991840U true CN201991840U (en) | 2011-09-28 |
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ID=44668329
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200499083U Expired - Fee Related CN201991840U (en) | 2011-02-28 | 2011-02-28 | Water feed pump assembling and disassembling tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201991840U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567963A (en) * | 2013-11-05 | 2014-02-12 | 沈阳斯特机械制造有限公司 | Tool and method for assembling and disassembling thrust plate |
| CN108927640A (en) * | 2017-05-26 | 2018-12-04 | 中国电建集团上海能源装备有限公司 | A kind of device for the dismounting of 1000MW full capacity fired power generating unit water supply pump core packet |
| CN113478172A (en) * | 2021-07-08 | 2021-10-08 | 哈尔滨电气动力装备有限公司 | Hot assembly and disassembly process for thrust disc of medium-sized shielding motor |
-
2011
- 2011-02-28 CN CN2011200499083U patent/CN201991840U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103567963A (en) * | 2013-11-05 | 2014-02-12 | 沈阳斯特机械制造有限公司 | Tool and method for assembling and disassembling thrust plate |
| CN108927640A (en) * | 2017-05-26 | 2018-12-04 | 中国电建集团上海能源装备有限公司 | A kind of device for the dismounting of 1000MW full capacity fired power generating unit water supply pump core packet |
| CN113478172A (en) * | 2021-07-08 | 2021-10-08 | 哈尔滨电气动力装备有限公司 | Hot assembly and disassembly process for thrust disc of medium-sized shielding motor |
| CN113478172B (en) * | 2021-07-08 | 2022-06-14 | 哈尔滨电气动力装备有限公司 | Hot assembly and disassembly process for thrust disc of medium-sized shielding motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: CHINA POWER CONSTRUCTION GROUP ENERGY EQUIPMENT CO Free format text: FORMER NAME: SHANGHAI POWER BUILDING AND REPAIRING GENERAL FACTORY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201316, Shanghai, Pudong New Area Town, barley Bay Industrial Zone, air route 80 - 86 Patentee after: POWERCHINA SPEM COMPANY LIMITED Address before: 201316, Shanghai, Pudong New Area Town, barley Bay Industrial Zone, air route 80 - 86 Patentee before: Shanghai Power Equipment Manufacture Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20170228 |