CN206422724U - A kind of circulation-water pump electric machine high and low speed switching device - Google Patents
A kind of circulation-water pump electric machine high and low speed switching device Download PDFInfo
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- CN206422724U CN206422724U CN201621469407.XU CN201621469407U CN206422724U CN 206422724 U CN206422724 U CN 206422724U CN 201621469407 U CN201621469407 U CN 201621469407U CN 206422724 U CN206422724 U CN 206422724U
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- low speed
- circulation
- water pump
- switching device
- electric machine
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Abstract
The utility model discloses a kind of circulation-water pump electric machine high and low speed switching device, including a-b box, the terminal plate being fixed in the a-b box, it is installed on transition row's binding post on the terminal plate, and the connection sheet that binding post is arranged in the adjacent transition can be connected, the transition row binding post includes the lower end-piece (5) parallel with the terminal plate, it is connected with one end of the lower end-piece (5) and the intermediate (3) vertical with the lower end-piece (5), other end connection and the upper dististyle (1) parallel with the lower end-piece (5) with the intermediate (3), the intermediate (3) is connected by lead bolt with stator lead, the upper dististyle (1) is connected with the connection sheet and the lower end-piece (5) with the terminal plate by hold-down bolt.The circulation-water pump electric machine high and low speed switching device effectively reduces the damage of motor high and low speed switching device.
Description
Technical field
The utility model is related to technical field of motors, more particularly to a kind of circulation-water pump electric machine high and low speed switching device.
Background technology
Circulation-water pump electric machine is in the consideration of energy saving in running, generally carries out high low speed transformation.By in high low speed junction box
The adjustment of bolt connection piece, changes motor field number of pole-pairs, reaches change motor speed, and be finally reached reduction motor
Exert oneself, the purpose of output power of motor is reduced, so as to realize the purpose of energy-conservation.Such as circulation-water pump electric machine is changed by the pole of single speed 16
For 16/18 pole double-speed motor, rated current is 309A during low speed, and electrical machine energy-saving effect is obvious after transformation.According to the method for operation
Need, motor need to be made into high-speed cruising mode in spring, autumn makes the low speed method of operation into.Spiral shell in current high low speed junction box
Bolt is generally by the way of hard copper connection sheet, and can not realize monitoring binding post state of temperature in motor operation.
From can be seen that by the attachment structure of existing high low speed junction box inner bolt due to lead bolt should transmit
The electric action of electric current, while being secure component again, playing a part of compression connection sheet prevents coupling part from loosening heating.
From lead bolt needs from the point of view of the electric action of transmission electric current, determine that the material of lead bolt needs to use work
I.e. industry fine copper red copper, and the material of red copper is partially soft；From lead bolt simultaneously secure component effect from the point of view of, it is necessary to
Bolt material hardness is than larger.Annual needs at least twice with the high low speed for realizing motor changed by demounting bolt, especially motor
Bolt looseness and multiple fastening inspection caused by vibration during frequent starting.
Contradiction produced by between the requirement of electric conductivity and the requirement of secure component, causes lead bolt screw thread to damage more
Frequently, about 2-3 just occurs that bolt screw thread damages the situation for leading to not compress connection sheet and occurred.And lead bolt is with drawing
The connected mode of line connects for silver soldering, once bolt screw thread is damaged, it is necessary to and re-start silver soldering and connect, construction technology is complex,
Site operation difficulty is higher.
By the analysis to failure cause, motor down-lead binding post material is that anaerobic is copper, and hardness is partially soft, nut fastening force
Square is less than normal, and repeatedly dismounting screw easily causes screw thread damage, further results in nut and binding post screw rod Tightening moment is less than normal.Simultaneously
Because the material of connection bolt is softer than the material of brass nut, after electric motor starting overcurrent fever expansion, spiral shell is easily caused
Bar screw thread stress exceedes the limit that screw thread can be born, and causes screw thread to damage.Binding post bolt crimping portion nut loosening, causes to connect
Fastening force is tapered between connecing the fixing nut of copper bar, and contact resistance increase, hot-spot, vicious circle reaches to a certain degree
Afterwards, occur gap between binding post and copper bar, under starting current impact, produce arc discharge, because space is smaller, electric arc extension
It is fast-developing into phase fault to adjacent binding post.Had occurred and that several causes failed to find lead bolt in time in power system
Loosening causes circulation-water pump electric machine to occur high low speed a-b box connection sheet overheat on startup, the accident such as electric discharge, considerably increases
Maintenance cost, or even motor stator winding is damaged, Auxiliary Power System Voltage is influenceed, the stable operation of unit is threatened, it should cause
Our great attention.
In summary, the damage of motor high and low speed switching device how is efficiently reduced, is current those skilled in the art
Urgent problem.
Utility model content
The purpose of this utility model is to provide a kind of circulation-water pump electric machine high and low speed switching device, and the circulation-water pump electric machine is high
Low speed switching device effectively reduces the damage of motor high and low speed switching device.
In order to solve the above technical problems, the utility model provides following technical scheme：
A kind of circulation-water pump electric machine high and low speed switching device, including a-b box, be fixed in the a-b box terminal plate,
Transition row's binding post on the terminal plate is installed on, and the connection sheet that binding post is arranged in the adjacent transition, institute can be connected
State transition row's binding post include the lower end-piece parallel with the terminal plate, be connected with one end of the lower end-piece and with the lower end
The vertical intermediate of piece, the other end connection with the intermediate and the upper dististyle parallel with the lower end-piece, the intermediate
It is connected by lead bolt with stator lead, the upper dististyle passes through with the connection sheet and the lower end-piece with the terminal plate
Hold-down bolt is connected.
Preferably, mounting hole is offered on the terminal plate and the lower end-piece, the lower end-piece passes through the first zinc-plated spiral shell
Bolt is fixed on the terminal plate.
Preferably, threading hole is offered beside transition row's binding post on the terminal plate, the stator lead is worn
The threading hole is crossed to be connected with the intermediate.
Preferably, wiring hole is offered on the intermediate, the opening Wiring nose of the stator lead passes through copper bolt
It is crimped on the wiring hole.
Preferably, connecting hole is offered in the upper dististyle and the connection sheet, the connection sheet passes through the second zinc-plated spiral shell
Bolt is connected with the upper dististyle.
Preferably, infrared viewing window is installed on the case lid of the a-b box.
Preferably, the terminal plate is specially SMC insulation joint plates, and its thickness is more than or equal to 20mm.
Preferably, the a-b box passes through epoxy resins insulation plate molding assembly.
Preferably, the spacing of the transition row binding post is 175-185mm, and the height of the transition row binding post is 115-
125mm。
Circulation-water pump electric machine high and low speed switching device provided by the utility model, including a-b box, terminal plate, row's wiring
Post and connection sheet, terminal plate are fixed in a-b box, and transition row's binding post is installed on terminal plate, and connection sheet can connect phase
Binding post is arranged in adjacent transition, and the adjustment of binding post is arranged by connection sheet and transition, changes motor field number of pole-pairs, reaches change electricity
Motivation rotating speed, and reduction motor-output is finally reached, the purpose of output power of motor is reduced, so as to realize the mesh of energy-conservation
's.Such as circulation-water pump electric machine is changed to 16/18 pole double-speed motor by the pole of single speed 16, and rated current is 309A during low speed, after transformation
Electrical machine energy-saving effect is obvious.The need for according to the method for operation, motor need to be made into high-speed cruising mode in spring, autumn makes into low
The fast method of operation.
Transition row's binding post includes lower end-piece, intermediate, upper dististyle, is one end company of U-shape structure, intermediate and lower end-piece
Connect, intermediate is vertical with lower end-piece, by lead bolt connection stator lead, the material of lead bolt using industrial pure copper also
It is red copper, the material of red copper is partially soft, lead bolt has only needed to transmit the electric action of electric current, without the work for playing secure component
With.Lower end-piece is parallel with terminal plate, and is installed on by hold-down bolt on terminal plate, is fixed on transition row's binding post with this and connects
On line plate；The other end connection of upper dististyle and intermediate, and upper dististyle is parallel with lower end-piece, upper dististyle passes through hold-down bolt and company
Contact pin is connected, and hold-down bolt plays secure component, and the material hardness of hold-down bolt is than larger, hold-down bolt screw thread not rapid wear
Bad, hold-down bolt is changed in annual dismounting with the high low speed for realizing motor, especially during motor frequent starting, hold-down bolt
It is difficult to loosen, connection is more fastened, and is less prone to arc short-circuit, it is possible to reduce fastening checks number of times.
Circulation-water pump electric machine high and low speed switching device provided by the utility model, more practical, simple in construction, maintenance side
Just, by transition arrange the different parts of binding post respectively by the different lead bolt of material and hold-down bolt and stator lead and
Connection sheet, terminal plate connection, the transmission electric action of electric current and the pressuring action of secure component of bolt are separated, electric conductivity
It is required that not having contradiction between the requirement of secure component, the screw thread of lead bolt and hold-down bolt is hardly damaged, and not only transmits electricity
The electric conductivity of stream, which preferably, also preferably plays a part of compression connection sheet, prevents coupling part from loosening heating, improves double speed electricity
The flexibility of machine switching mode, reduces the generation of the Circulating water pump electric machine damage accident caused by binding post screw thread is damaged.Bolt is difficult
Damage, construction technology is relatively simple, and site operation difficulty is relatively low, circulation-water pump electric machine is less prone to high low speed switching on startup
The accidents such as case connection sheet overheat, electric discharge, greatly reduce maintenance cost, are hardly damaged motor stator winding, station service electrical system electricity
Pressure is safer, while economic benefit is increased, and reduces the loss caused by binding post overheat, discharge accident, improves and set
Standby economy.
Brief description of the drawings
, below will be to embodiment in order to illustrate more clearly of the utility model embodiment or technical scheme of the prior art
Or the accompanying drawing used required in description of the prior art is briefly described, it should be apparent that, drawings in the following description are only
It is some embodiments of the present utility model, for those of ordinary skill in the art, is not paying the premise of creative work
Under, other accompanying drawings can also be obtained according to these accompanying drawings.
In the circulation-water pump electric machine high and low speed switching device that Fig. 1 is provided by a kind of embodiment in the utility model
The structural representation of binding post is arranged in transition；
Fig. 2 is Fig. 1 top view.
Marked in accompanying drawing as follows：
The upper dististyles of 1-, 2- connecting holes, 3- intermediates, 4- wiring holes, 5- lower end-pieces, 6- mounting holes.
Embodiment
Core of the present utility model is to provide a kind of circulation-water pump electric machine high and low speed switching device, and the circulation-water pump electric machine is high
Low speed switching device effectively reduces the damage of motor high and low speed switching device.
Below in conjunction with the accompanying drawing in the utility model embodiment, the technical scheme in the utility model embodiment is carried out
Clearly and completely describe, it is clear that described embodiment is only a part of embodiment of the utility model, rather than whole
Embodiment.Based on the embodiment in the utility model, those of ordinary skill in the art are not under the premise of creative work is made
The every other embodiment obtained, belongs to the scope of the utility model protection.
It refer to Fig. 1 and Fig. 2, Fig. 1 is by a kind of embodiment is provided in the utility model circulation-water pump electric machine
The structural representation of binding post is arranged in transition in high and low speed switching device；Fig. 2 is Fig. 1 top view.
In a kind of embodiment, circulation-water pump electric machine high and low speed switching device provided by the utility model, bag
A-b box, terminal plate, row's binding post and connection sheet are included, terminal plate is fixed in a-b box, transition row's binding post, which is installed on, to be connect
On line plate, connection sheet can connect adjacent transition row's binding post, and the adjustment of binding post is arranged by connection sheet and transition, is changed electronic
Machine magnetic field number of pole-pairs, reaches change motor speed, and is finally reached reduction motor-output, reduction output power of motor
Purpose, so as to realize the purpose of energy-conservation.Such as circulation-water pump electric machine is changed to 16/18 pole double-speed motor by the pole of single speed 16, during low speed
Rated current is that electrical machine energy-saving effect is obvious after 309A, transformation.The need for according to the method for operation, motor need to be made into height in spring
The fast method of operation, autumn makes the low speed method of operation into.
Transition row's binding post includes lower end-piece 5, intermediate 3, upper dististyle 1, is U-shape structure, intermediate 3 and lower end-piece 5
One end is connected, and intermediate 3 is vertical with lower end-piece 5, by lead bolt connection stator lead, and the material of lead bolt uses industry
I.e. fine copper red copper, the material of red copper is partially soft, lead bolt has only needed to transmit the electric action of electric current, without playing fastening part
The effect of part.Lower end-piece 5 is parallel with terminal plate, and is installed on by hold-down bolt on terminal plate, and transition is arranged into binding post with this
It is fixed on terminal plate；Upper dististyle 1 is connected with the other end of intermediate 3, and upper dististyle 1 is parallel with lower end-piece 5, and upper dististyle 1 leads to
Cross hold-down bolt to be connected with connection sheet, hold-down bolt plays secure component, the material hardness of hold-down bolt is compressed than larger
Bolt screw thread is hardly damaged, and hold-down bolt is changed in annual dismounting with the high low speed for realizing motor, especially motor frequent starting
During, hold-down bolt is difficult to loosen, and connection is more fastened, and is less prone to arc short-circuit, it is possible to reduce fastening checks number of times.
Circulation-water pump electric machine high and low speed switching device provided by the utility model, more practical, simple in construction, maintenance side
Just, by transition arrange the different parts of binding post respectively by the different lead bolt of material and hold-down bolt and stator lead and
Connection sheet, terminal plate connection, the transmission electric action of electric current and the pressuring action of secure component of bolt are separated, electric conductivity
It is required that not having contradiction between the requirement of secure component, the screw thread of lead bolt and hold-down bolt is hardly damaged, and not only transmits electricity
The electric conductivity of stream, which preferably, also preferably plays a part of compression connection sheet, prevents coupling part from loosening heating, improves double speed electricity
The flexibility of machine switching mode, reduces the generation of the Circulating water pump electric machine damage accident caused by binding post screw thread is damaged.Bolt is difficult
Damage, construction technology is relatively simple, and site operation difficulty is relatively low, circulation-water pump electric machine is less prone to high low speed switching on startup
The accidents such as case connection sheet overheat, electric discharge, greatly reduce maintenance cost, are hardly damaged motor stator winding, station service electrical system electricity
Pressure is safer, while economic benefit is increased, and reduces the loss caused by binding post overheat, discharge accident, improves and set
Standby economy.
Above-mentioned circulation-water pump electric machine high and low speed switching device is only a kind of preferred scheme, is specifically not limited thereto, herein
On the basis of can make according to actual needs with targetedly adjusting, so as to obtain different embodiments, terminal plate and lower end
Mounting hole 6 is offered on piece 5, lower end-piece 5 is fixed on terminal plate by the first galvanized bolt, the first galvanized bolt intensity is high,
Silk mouth is hardly damaged, and changes convenient, connection lower end-piece 5 and terminal plate can ensure connection reliability, is effectively reduced transition row and is connect
Terminal generates heat.
On the basis of above-mentioned embodiment, those skilled in the art can be according to the difference of specific occasion, to following
Ring pump motor high and low speed switching device carries out offering threading hole beside transition row's binding post on some changes, terminal plate,
Stator lead is passed out of hole, and stator lead is connected through threading hole with intermediate 3, in high low speed switching reconfiguration semiyearly
During line mode, the possibility damaged for conductive lead bolt screw thread can be reduced with motionless motor stator lead.
Obviously, under the guidance of this thought, those skilled in the art can be according to the difference of specific occasion to above-mentioned
Embodiment carries out offering burn-on on wiring hole 4, stator lead opening Wiring nose, stator on some changes, intermediate 3
The opening Wiring nose of lead is crimped on wiring hole 4 by copper bolt, and opening Wiring nose is directly connected to transition row's binding post,
Water conservancy diversion contact area is increased, arc discharge is not likely to produce.
It is important to note that circulation-water pump electric machine high and low speed switching device provided by the utility model should not be limited
It is formed in such a situation, upper dististyle 1 and connection sheet and offers connecting hole 2, is used for high low speed switching connection sheet, connection sheet is led to
Cross the second galvanized bolt to be connected with upper dististyle 1, the second galvanized bolt intensity is high, silk mouthful is hardly damaged, change convenient, for ensureing
Connection sheet is connected reliably with transition row's binding post, improves the situation of binding post heating.
Circulation-water pump electric machine high and low speed switching device provided by the utility model, in the immovable situation of other parts
Under, infrared viewing window is installed on the case lid of a-b box,, can be in operation using infrared thermal imaging equipment in motor operation
The situation of pair of wire connection terminals carries out visualizing monitor and infrared imaging temperature measuring, and moment monitoring joint temperature notes abnormalities, in time
Processing, improves Circulating water pump electric machine reliability of operation.
For the circulation-water pump electric machine high and low speed switching device in each above-mentioned embodiment, terminal plate is specially SMC insulation
Terminal plate, its thickness is more than or equal to 20mm, and hardness and dielectric strength between increase transition row's binding post and terminal plate more may be used
Lean on.Certainly, SMC insulation joints plate be it is a kind of be not preferred embodiment unique, can also be other suitable and connect
Line plate, all in protection domain of the present utility model.
In order to further optimize above-mentioned technical proposal, a-b box, can be effective by epoxy resins insulation plate molding assembly
Improve the dielectric strength of equipment, it is to avoid the powered external shell electric discharge in position.
On the basis of each above-mentioned specific embodiment, the spacing of transition row's binding post is arbitrary value between 175-185mm,
Including endpoint value, such as it is 180mm, the spacing increase of transition row's binding post effectively prevents transition from arranging wiring intercolumniation arc discharge,
The phase fault that air breakdown is caused.Now a-b box size increases, such as the high wide * thickness of * is 1625*815*700mm after increasing,
The height of transition row's binding post is arbitrary value between 115-125mm, including endpoint value is such as 120mm, and structure is both simple tight
Gather, be easy to be connected with stator lead, terminal plate, connection sheet again, it is easy to operate.
, it is necessary to which explanation, term is upper and lower, the orientation of medium instruction or position relationship in description of the present utility model
Described based on orientation shown in the drawings or position relationship, to be for only for ease of description the utility model and simplifying, without referring to
Show or imply that the device or element of meaning there must be specific orientation, with specific azimuth configuration and operation, therefore can not manage
Solve as to limitation of the present utility model.
The embodiment of each in this specification is described by the way of progressive, and what each embodiment was stressed is and other
Between the difference of embodiment, each embodiment identical similar portion mutually referring to.
The foregoing description of the disclosed embodiments, enables professional and technical personnel in the field to realize or new using this practicality
Type.A variety of modifications to these embodiments will be apparent for those skilled in the art, determine herein
The General Principle of justice can in other embodiments be realized in the case where not departing from spirit or scope of the present utility model.Cause
This, the utility model is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein
The most wide scope consistent with features of novelty.
Claims (9)
1. a kind of circulation-water pump electric machine high and low speed switching device, it is characterised in that including a-b box, be fixed in the a-b box
Terminal plate, transition row's binding post for being installed on the terminal plate, and adjacent transition row binding post can be connected
Connection sheet, the transition row binding post includes the lower end-piece (5) parallel with the terminal plate, one end with the lower end-piece (5)
Connection and the intermediate (3) vertical with the lower end-piece (5), be connected with the other end of the intermediate (3) and with the lower end
The parallel upper dististyle (1) of piece (5), the intermediate (3) is connected by lead bolt with stator lead, the upper dististyle (1) with
The connection sheet and the lower end-piece (5) are connected with the terminal plate by hold-down bolt.
2. circulation-water pump electric machine high and low speed switching device according to claim 1, it is characterised in that the terminal plate and institute
State and mounting hole (6) is offered on lower end-piece (5), the lower end-piece (5) is fixed on the terminal plate by galvanized bolt.
3. circulation-water pump electric machine high and low speed switching device according to claim 2, it is characterised in that on the terminal plate
Threading hole is offered beside the transition row binding post, the stator lead connects through the threading hole with the intermediate (3)
Connect.
4. circulation-water pump electric machine high and low speed switching device according to claim 3, it is characterised in that the intermediate (3)
On offer wiring hole (4), the opening Wiring nose of the stator lead is crimped on the wiring hole (4) by copper bolt.
5. circulation-water pump electric machine high and low speed switching device according to claim 4, it is characterised in that the upper dististyle (1)
With connecting hole (2) is offered in the connection sheet, the connection sheet is connected by the second galvanized bolt with the upper dististyle (1).
6. the circulation-water pump electric machine high and low speed switching device according to claim any one of 1-5, it is characterised in that described to cut
Change on the case lid of case and infrared viewing window is installed.
7. the circulation-water pump electric machine high and low speed switching device according to claim any one of 1-5, it is characterised in that described to connect
Line plate is specially SMC insulation joint plates, and its thickness is more than or equal to 20mm.
8. circulation-water pump electric machine high and low speed switching device according to claim 7, it is characterised in that the a-b box passes through
Epoxy resins insulation plate molding assembly.
9. circulation-water pump electric machine high and low speed switching device according to claim 8, it is characterised in that wiring is arranged in the transition
The spacing of post is 175-185mm, and the height of the transition row binding post is 115-125mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621469407.XU CN206422724U (en) | 2016-12-29 | 2016-12-29 | A kind of circulation-water pump electric machine high and low speed switching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621469407.XU CN206422724U (en) | 2016-12-29 | 2016-12-29 | A kind of circulation-water pump electric machine high and low speed switching device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206422724U true CN206422724U (en) | 2017-08-18 |
Family
ID=59574015
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621469407.XU Active CN206422724U (en) | 2016-12-29 | 2016-12-29 | A kind of circulation-water pump electric machine high and low speed switching device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206422724U (en) |
-
2016
- 2016-12-29 CN CN201621469407.XU patent/CN206422724U/en active Active
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