CN107317252B - Switchgear - Google Patents

Switchgear Download PDF

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Publication number
CN107317252B
CN107317252B CN201710756087.9A CN201710756087A CN107317252B CN 107317252 B CN107317252 B CN 107317252B CN 201710756087 A CN201710756087 A CN 201710756087A CN 107317252 B CN107317252 B CN 107317252B
Authority
CN
China
Prior art keywords
rotor
plugging block
oil guide
guide channel
pump
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.)
Expired - Fee Related
Application number
CN201710756087.9A
Other languages
Chinese (zh)
Other versions
CN107317252A (en
Inventor
徐鹏飞
郭媛媛
李立
邢仁周
申超群
张卓
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Henan Mechanical and Electrical Vocational College
Original Assignee
Henan Mechanical and Electrical Vocational College
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Henan Mechanical and Electrical Vocational College filed Critical Henan Mechanical and Electrical Vocational College
Priority to CN201710756087.9A priority Critical patent/CN107317252B/en
Publication of CN107317252A publication Critical patent/CN107317252A/en
Application granted granted Critical
Publication of CN107317252B publication Critical patent/CN107317252B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02BBOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
    • H02B11/00Switchgear having carriage withdrawable for isolation
    • H02B11/02Details
    • H02B11/04Isolating-contacts, e.g. mountings, shieldings
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/22Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/24Power arrangements internal to the switch for operating the driving mechanism using pneumatic or hydraulic actuator
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H3/00Mechanisms for operating contacts
    • H01H3/22Power arrangements internal to the switch for operating the driving mechanism
    • H01H3/26Power arrangements internal to the switch for operating the driving mechanism using dynamo-electric motor

Abstract

The present invention relates to a kind of switchgears, including cabinet body, moving contact is provided in cabinet body, static contact and the hydraulic actuating mechanism of driving moving contact movement, the power section of hydraulic actuating mechanism includes motor and pump, pump includes the pump housing, rotor is provided in the pump housing, there are two point of contacts for the cross section of rotor and bore tool, the inlet opening and fluid hole separated by partition is provided on the pump housing, one end of partition and rotor outer periphery face sliding pushing tow cooperation, the major diameter direction both ends of rotor are provided with the Oil Guide channel of connection rotor circumferential direction two sides, also along major diameter direction, guiding movement is equipped with plugging block in rotor, plugging block has in its shift motion gets out of the way the first position in the Oil Guide channel and moves and block the second position in the Oil Guide channel outwardly under the action of the centrifugal force, it is provided on rotor to the plugging block and applies active force and force at plugging block Spring in first position.The present invention provides the switchgears that one kind can reduce electric motor starting load.

Description

Switchgear
Technical field
The present invention relates to the switchgears in electrical equipment.
Background technique
Switchgear is as a kind of common electrical equipment, and using relatively broad, switchgear includes cabinet body and is set to cabinet Moving contact, static contact in body are additionally provided in cabinet body and are sequentially connected to drive moving contact to act with moving contact and realize dynamic touching The hydraulic actuating mechanism of head, static contact divide-shut brake, the power section of hydraulic actuating mechanism includes motor and pump, wherein motor and pump Performance decide the performance of hydraulic actuating mechanism for one side, Chinese patent CN101749228A disclose it is a kind of efficiently " pump " of rate, the pump include pedestal, and the pump housing is provided on pedestal, and the pump housing has cylindrical hole inner cavity, and cylindrical hole is provided in inner cavity The rotor that pivot center extends along the longitudinal direction, there are two point of contacts for the section and cylindrical hole inner cavity of rotor.The periphery of the pump housing is arranged There is hole, guiding movement is equipped with baffle at hole, which is divided into inlet and liquid outlet by baffle, and rotor is cylinder, and the one of partition End and rotor outer periphery face sliding pushing tow cooperation.
In use, rotor clockwise rotates, the cavity of rotor two sides communicates with inlet and liquid outlet respectively, wherein with into The cavity that liquid mouth communicates is low pressure chamber, and the cavity communicated with liquid outlet is high pressure chest, and partition cooperates with rotor sliding pushing tow always Guarantee that low pressure chamber and high pressure chest are obstructed, during rotation, hydraulic oil is inhaled into low pressure chamber through oil inlet to rotor, with rotor Rotation is squeezed and is discharged through oil outlet, realizes pump oil.Existing this pump has problems in that: rotor is driven by a motor and turns It is dynamic, for corresponding motor, the larger not only power consumption of starting load but also also larger to the loss of motor, and in the prior art, motor Also hydraulic oil is filled with when starting in low pressure chamber, to complete to do work to hydraulic oil could complete the starting of motor, this is increased by The starting load of motor, lowest power when not only resulting in choice of electrical machine increased, and also will affect the normal energy consumption of motor.
Summary of the invention
The purpose of the present invention is to provide the switchgears that one kind can reduce electric motor starting load.
In order to solve the above technical problems, technical scheme is as follows:
Switchgear, including cabinet body are provided with the hydraulic operating of moving contact, static contact and driving moving contact movement in cabinet body Mechanism, the power section of hydraulic actuating mechanism include motor and pump, and pump includes the pump housing with cylindrical hole inner cavity, are arranged in the pump housing Have that pivot center extends along the longitudinal direction, cross section is elliptoid rotor, and the cross section of rotor and bore have two A point of contact, the inlet opening and fluid hole separated by partition is provided on the pump housing, and pushing tow is slided in one end and rotor outer periphery face of partition Cooperation, the major diameter direction both ends of rotor are provided with the Oil Guide channel of connection rotor circumferential direction two sides, also lead along major diameter direction in rotor It is equipped with plugging block to movement, plugging block has the first position for getting out of the way the Oil Guide channel and is being centrifuged in its shift motion The second position in the Oil Guide channel is moved and blocked under power effect outwardly, is provided on rotor to the plugging block application and acts on Power and force plugging block to be in the spring of first position.
The spring is the pressure spring being set on the outside of plugging block.
The slot for corresponding plugging block outer end adaptation insertion is offered on the lateral wall in Oil Guide channel, plugging block inner end is always Cooperate with rotor guiding movement.
The invention has the benefit that being acted on when rotor is inactive by spring, plugging block is in first position, Oil Guide The circumferential two sides of channel connection rotor, when rotor ground zero, since revolving speed is also relatively slow, centrifugal force is not enough to overcome spring Active force, therefore Oil Guide channel is still connected, the oil pressure of rotor circumferential direction two sides is consistent, therefore the starting load of rotor is smaller, When the speed of rotor reaches certain value, the centrifugal force of plugging block overcomes the active force of spring, and plugging block is moved to second outwardly Position, Oil Guide channel are blocked, so that normal fuel feeding is realized, to reach the electrical machine energy-saving effect to switchgear.
Further, at the second position, the outer end of plugging block is inserted into the slot of adaptation plugging block, plugging block it is interior Then guiding movement cooperates always with rotor at end, and material is thus formed the both ends supports to plugging block, helps to improve plugging block Anti- oil pressure capacity, when guaranteeing the second position, plugging block can undertake biggish oil pressure.
Detailed description of the invention
Fig. 1 is status diagram when present invention pump is inactive;
Fig. 2 is the status diagram in the present invention after pump startup;
Fig. 3 is the top view of rotor in Fig. 1;
Fig. 4 is enlarged drawing at A in Fig. 2;
Fig. 5 is the cooperation schematic diagram of brake device for electrical machinery and motor shaft in the present invention;
Fig. 6 is the cooperation schematic diagram of motor shaft and bearing block in the present invention;
Fig. 7 is the structural schematic diagram that spanner is adjusted in the present invention;
Fig. 8 is the side view of Fig. 7;
Fig. 9 is the cooperation schematic diagram of electric machine casing and the pump housing in the present invention.
Specific embodiment
The implementation of switchgear is for example shown in Fig. 1 ~ 9: switchgear includes cabinet body, and there are three single-phase units for setting in cabinet body, often A single-phase unit includes the hydraulic actuating mechanism of moving contact, static contact and driving moving contact movement, and hydraulic actuating mechanism includes Power section and execution part, power section include motor 37 and pump 36, and execution part includes hydraulic cylinder and energy-stored spring, base This working principle is, power section can into hydraulic cylinder pump oil, hydraulic cylinder compressed energy-storage spring energy-storage, when needing to close a floodgate When, energy-stored spring releases energy, and the piston rod of hydraulic cylinder drives moving contact mobile to realize closing operation towards static contact.Liquid The working mechanism of pressure operating mechanism belongs to the prior art, and this will not be detailed here, and the improvement of this invention is following part.
Pump 36 includes the pump housing 2 with cylindrical hole inner cavity, be provided in the pump housing 2 it is that pivot center extends along the longitudinal direction, Cross section is elliptoid rotor 5, the cross section of rotor 5 and bore tool there are two point of contact, is provided with hole on the pump housing, at hole Guiding movement be equipped with one end and rotor outer periphery face sliding pushing tow cooperation for by hole be separated into inlet 8, liquid outlet 1 every Plate 9, cylindrical hole inner cavity are also separated into the high pressure chest 3 with the low pressure chamber 11 of 8 connection of inlet and with 1 connection of liquid outlet by partition 9, The major diameter direction both ends of rotor are provided with the Oil Guide channel 7 of connection rotor circumferential direction two sides, and the longitudinal section in Oil Guide channel 7 is arc-shaped The center of circle of structure, arc-shaped structure is between the Oil Guide channel of two sides, and every side Oil Guide channel has multiple, and each Oil Guide of each side is logical Compartment 71 of the road between rotor axial arranged for interval, each Oil Guide channel of every side can play the role of supporting clapboard 9 To avoid partition clamping stagnation into Oil Guide channel.The both ends of rotor are additionally provided with what guide direction extended along the major diameter direction of rotor Pilot hole, be individually directed in two pilot holes it is mobile be equipped with plugging block 4, each plugging block 4 is logical with corresponding Oil Guide respectively Road 7 is corresponding, and Oil Guide channel is the linear type channel perpendicular with plugging block moving direction, and plugging block has in its shift motion There is the first position for getting out of the way corresponding Oil Guide channel 7 and moves and block the of corresponding Oil Guide channel 7 outwardly under the action of the centrifugal force Two positions are provided on rotor 5 corresponding with each plugging block for forcing plugging block to corresponding plugging block application active force Spring in first position, spring is the pressure spring 6 being set on the outside of plugging block in the present embodiment, and the outside end of plugging block is set It is equipped with plugging block end tooth 72, the rotor end tooth 73 for being adapted to interfix with plugging block end tooth, plugging block end tooth are provided on rotor 72 with 73 interfix of rotor end tooth after form labyrinth seal, the V-shaped groove between two neighboring rotor end tooth forms slot, in this way can be with Guarantee in rotor During regular rotation, the excellent sealing in Oil Guide channel, while also forming the both ends support to plugging block 4, guarantees The anti-pressure ability of plugging block 4 guarantees the service life that plugging block works under high oil pressure.When motor is inactive, made by pressure spring 6 The first position for getting out of the way corresponding Oil Guide channel is in, each plugging block as shown in Figure 1, motor is in incipient start-up course, Rotor speed is smaller, and the centrifugal force of plugging block is not enough to overcome the active force of pressure spring, therefore Oil Guide channel is always to be connected, and is turned The pressure of sub- circumferential direction two sides is identical, and the resistance that rotor motion is subject to is just smaller, low-load starting may be implemented, low-power machine is just The load starting of rotor may be implemented, after rotor speed reaches certain speed, such as motor speed reaches 1000r/min Afterwards, the centrifugal force of rotor overcomes the elastic force of pressure spring, and plugging block is displaced outwardly Oil Guide passage plugging, pumps and normal supply can be achieved Oil.In actual use, it can select suitable spring according to requirements or adjust the preload amount of spring to adjust motor assorted Normal fuel injection may be implemented when revolving speed.In other embodiments of the invention, plugging block end tooth can not also be set, such as be sealed Sprue end face be planar structure, at this time slot can be set on the lateral wall of Oil Guide channel be adapted to plugging block outer end it is recessed Slot.
Motor includes the electric machine casing 12 connecting with the pump housing, arranges before and after electric machine casing 12, the pump housing 2, sets in electric machine casing It is equipped with the motor shaft 18 that pivot center extends along the longitudinal direction, dynamic sealing mechanism 30 is provided between motor shaft 18 and the pump housing 2, electricity The front side of dynamic sealing mechanism 30 is provided with drain nut 32 on arbor 18, is evenly distributed on the outer edge of drain nut 32 There are multiple notches 33.Annular groove 34 corresponding with drain nut 32 is provided on electric machine casing, annular groove 34 is in dynamic The front side of sealing mechanism, the bottom of annular groove 34 are provided with drainage hole 35, and the upper end of electric machine casing is provided with air inlet 31, into Stomata 31 is in the front side of dynamic sealing mechanism 30, and breather cheek valve is provided at air inlet 31, and gas can enter through the external world, but It is that internal liquid cannot be discharged through breather cheek valve.The liquid sucting port 10 with low pressure chamber connection, liquid sucting port are provided on the pump housing Liquid non-return valve is provided at 10, liquid can enter the pump housing through liquid sucting port, but cannot be discharged through liquid sucting port, liquid sucting port 10 It is connect with drainage hole 35 by hose.In normal use, dynamic sealing mechanism may fail power assembly, at this time the liquid in pump Pressure oil can be through flow direction motor between dynamic sealing mechanism and motor shaft, and after hydraulic oil flows on drain nut 32, hydraulic oil is got rid of Into annular groove 34, and annular groove 34 is then connected through drainage hole 35, liquid sucting port 10 and the low pressure chamber of pump, the hydraulic oil of leakage It can be drawn into low pressure chamber again, participate in the pump oil of next stage.
Motor further includes the brake device for electrical machinery for braking to motor shaft, and brake device for electrical machinery includes multiple along week To spaced apart brake units 13, each brake units 13 include can be along the brake shoes of motor shaft radial floating by spring 16, brake units further include the fixation steel disc 14 being oppositely arranged with brake shoes, and system is provided between brake shoes 16 and electric machine casing It moves spring 15, electromagnetic coil is provided in brake shoes 16, electromagnetic coil is electrically connected with the supply lines of motor.Figure middle term 17 indicates bullet Spring guide cylinder, in motor normal power supply, electromagnetic coil, which is powered, generates magnetic force and attracting with fixed steel disc 14, overcomes braking with this Acting force of the spring, brake shoes are not contacted with motor shaft, when motor power-off, by the effect of tripping spring, each brake shoes with electricity Arbor contacts and realizes friction catch.Entire brake units are arranged on fixed electric machine casing, rather than are arranged in electricity On arbor, when motor shaft normal rotation, does not need to expend more loads, facilitates energy conservation, while becoming to solenoid yet It must be more easier, whole device is easy to accomplish, and is not easy to break down.
General bearing block is provided in the end of electric machine casing, general bearing block is adapted to the electricity of plurality of specifications size Arbor, basic structure are as follows: bearing block includes frame-shaped body 21, and the clamping list of a pair of opposing is provided on frame-shaped body Member, two clamping units are referred to as clamping unit 20 and lower clamping unit 19, and each clamping unit includes and frame shape sheet The screw rod 23 that body is threadedly coupled, the screw flight of upper and lower clamping unit is oppositely oriented and is coaxially set, and the inner end of screw rod is set It is equipped with grip block 24, screw rod can be rotated relative to grip block, gripped between two grip blocks for matching with motor shaft 18 The bearing 25 of conjunction.The upper end of the screw rod of upper clamping unit is provided with the upper vertical bar jack 22 axially vertical with screw rod, lower bearing list The lower end of the screw rod of member is provided with the lower vertical bar jack 50 axially vertical with screw rod, and upper and lower vertical bar jack respectively constitutes two spiral shells The torque input structure of bar.Bearing block further includes the adjustment spanner for adjusting distance between the grip block of upper and lower clamping unit, Adjust spanner as seen in figs. 5-6 comprising cross bar 27 and two can be along the vertical bar 26 of 27 extending direction guiding movement of cross bar, vertical bars 26 are slidably matched by the T shape end 28 of its end and the guiding of T-slot 29 on cross bar 27, in use, two vertical bars 26 of adjustment Position, two vertical bars are respectively inserted in the correspondence vertical bar jack of upper and lower clamping unit, then move cross bar around the axis of screw rod Line rotation, cross bar drive two vertical bars to swing, to drive each screw rod to rotate, to realize the grip block of upper and lower clamping unit Relative movement adjustment is moved away from adjustment, and to match the bearing of different-diameter, which is had the beneficial effect that, two spiral shells The rotational angle of bar is consistent, therefore the moving distance of the grip block of upper and lower clamping unit is consistent, this is ensured that No matter how general bearing block adjusts, and can guarantee that the center of bearing is constant, prevents motor axis deviation and causes bearing Abrasion is very fast.In other embodiments of the invention, adjustment spanner can also not as bearing block technical solution a part, than Such as say in addition adjustment spanner can be sold separately;Torque input structure on screw rod is also possible to flat head structure, at this time can be Driving groove with the cooperation of flat head structure rotation stop is set on vertical bar.

Claims (3)

1. switchgear, including cabinet body, the hydraulic operating machine of moving contact, static contact and driving moving contact movement is provided in cabinet body Structure, the power section of hydraulic actuating mechanism include motor and pump, it is characterised in that: and pump includes the pump housing with cylindrical hole inner cavity, It is elliptoid rotor, the cross section of rotor and cylindricality that pivot center extends along the longitudinal direction, cross section is provided in the pump housing Inner hole tool is provided with the inlet opening and fluid hole separated by partition, one end of partition and rotor outer periphery on the pump housing there are two point of contact Pushing tow cooperation is slided in face, and the major diameter direction both ends of rotor are provided with the Oil Guide channel of connection rotor circumferential direction two sides, go back edge in rotor Major diameter direction guiding movement is equipped with plugging block, and plugging block has first for getting out of the way the Oil Guide channel in its shift motion The second position in the Oil Guide channel is set and move and block outwardly under the action of the centrifugal force, is provided on rotor to the closure Block applies active force and plugging block is forced to be in the spring of first position.
2. switchgear according to claim 1, it is characterised in that: the spring is the pressure spring being set on the outside of plugging block.
3. switchgear according to claim 1 or 2, it is characterised in that: offer on the lateral wall in Oil Guide channel for correspondence The slot of plugging block outer end adaptation insertion, plugging block inner end cooperates with rotor guiding movement always.
CN201710756087.9A 2017-08-29 2017-08-29 Switchgear Expired - Fee Related CN107317252B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710756087.9A CN107317252B (en) 2017-08-29 2017-08-29 Switchgear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710756087.9A CN107317252B (en) 2017-08-29 2017-08-29 Switchgear

Publications (2)

Publication Number Publication Date
CN107317252A CN107317252A (en) 2017-11-03
CN107317252B true CN107317252B (en) 2019-03-15

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CN201710756087.9A Expired - Fee Related CN107317252B (en) 2017-08-29 2017-08-29 Switchgear

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111323262B (en) * 2020-03-20 2022-12-16 贵州金洋检测工程有限公司 Sludge sampler

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101749228A (en) * 2008-12-15 2010-06-23 陈双利 Pump
CN103016337A (en) * 2011-09-28 2013-04-03 秦永 Pump
CN105626515A (en) * 2016-03-03 2016-06-01 凤杰图 Pump

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CN107317252A (en) 2017-11-03

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Granted publication date: 20190315

Termination date: 20200829