CN109138679B

CN109138679B - Telescopic valve and switch cabinet using same

Info

Publication number: CN109138679B
Application number: CN201810983653.4A
Authority: CN
Inventors: 张永辉; 袁端磊; 李小军; 卢健; 冯祥伟; 费翔; 朱志豪; 王海燕; 杨芳
Original assignee: State Grid Corp of China SGCC; Pinggao Group Co Ltd; State Grid Shanghai Electric Power Co Ltd
Current assignee: State Grid Corp of China SGCC; Pinggao Group Co Ltd; State Grid Shanghai Electric Power Co Ltd
Priority date: 2017-04-05
Filing date: 2017-04-05
Publication date: 2020-08-07
Anticipated expiration: 2037-04-05
Also published as: CN109138679A; CN106948691B; CN109138680B; CN106948691A; CN109138680A

Abstract

The invention relates to a telescopic valve and a switch cabinet using the same, wherein the telescopic valve comprises a guide base and telescopic joints movably arranged on the guide base from front to back, the telescopic joints are sequentially nested, the front end and the rear end of each telescopic joint are respectively provided with a front limiting structure and a rear limiting structure which are used for being matched with the front and rear stops of the adjacent telescopic joint, the guide base is provided with a guide rail extending from front to back, the telescopic joint is provided with a guide piece matched with the guide rail in a guide and moving way, and the telescopic joint is arranged on the guide rail through the guide piece in a front-back guide way. The valve can realize complete guide in the horizontal and vertical directions through the guide rail and the guide piece, so that a front-back guide arrangement is formed, the telescopic joint is prevented from inclining, the telescopic joint is prevented from being blocked and derailed, and the reliability is favorably ensured.

Description

Telescopic valve and switch cabinet using same

The application is a divisional application of the following applications, the application date of the original application: 4, 5.2017, application number of original application: 201710218413.0, title of original application: a telescopic valve and a switch cabinet using the same.

Technical Field

The invention relates to a telescopic valve and a switch cabinet using the same.

Background

At present, the types of switch products applied in domestic and foreign production and markets are more, and the general structural types are divided into front, middle and rear arrangement and left, middle and right arrangement according to the arrangement direction of three-phase contacts. Most of the devices arranged on the left, middle and right are movable metal-enclosed switchgear, and a valve is required to open and close the electrified body. For example, the valve mechanism of the armored medium-voltage switch cabinet disclosed in chinese patent with application number 201320274543.3 and publication number CN 203278074U is suitable for left, middle and right switch cabinets, and comprises a guide rail arranged on a bottom plate of a cabinet body, a push plate is slidably connected in the guide rail, one side of the push plate is connected with a breaker moving trolley, and a push plate push-up frame and a push plate push-down frame are arranged at the front end of the push plate; the valve mechanism further comprises an upper valve seat and a lower valve seat, the upper valve seat is connected with the upper valve, the lower valve seat is connected with the lower valve, and the upper valve and the lower valve are arranged in a vertically guiding and moving mode. The push plate pushing frame, the push plate pushing frame and the corresponding upper valve seat and the corresponding lower valve seat are in transmission connection through mechanisms such as corresponding shaft rollers, shaft pins, connecting rods, lifting plates and toggle supports, so that the upper valve and the lower valve can move up and down under the action of the breaker moving trolley for forming isolation fractures to be opened or closed, and the effect that the valve is closed when the valve is opened and withdrawn when the breaker moving trolley enters is achieved.

The valve is mature in technology and wide in application, but for the switch cabinet with the main loop fixed contacts arranged in front, middle and rear, the fixed contacts and the contact boxes to be covered by the valve are arranged along the depth direction of the cabinet body, the depth of the shielded area is large, and other parts are required to be installed in the width direction of the cabinet body, so that the valve is difficult to arrange, traditional products arranged in front, middle and rear are box-type or fixed, compartments are not obviously divided, and the loss of operation continuity and protection level is low.

The invention discloses a switch cabinet valve device and a switch cabinet using the same, wherein the switch cabinet valve device comprises a guide base, a fixed valve and a movable valve, the fixed valve and the movable valve are both of plate structures, the plate structures are integrally U-shaped, the bottom of the side wall for forming a U-shaped opening is provided with a vertical flanging, the left side and the right side of the guide base are provided with U-shaped guide parts for forming valve guide grooves, the movable valve is arranged on the guide base in a guiding and moving manner along the front and back direction through the matching of the vertical flanging and the U-shaped guide parts, the movable valve forms a telescopic joint and comprises a first telescopic joint at the foremost end and a last telescopic joint at the rearmost end, the front end of each telescopic joint is provided with a front transverse flanging and a front longitudinal flanging, the rear end of each telescopic joint is provided with a rear transverse flanging, the front transverse flanging and the front longitudinal flanging form a front limit structure, the rear transverse flanging form a rear limit structure, the telescopic joints can be matched with front and rear limit stops to realize the opening and closing of the valve through the front limit structure and the rear limit structure, the telescopic joints are connected with a telescopic plate L, and a front and rear limit mechanism is arranged on the telescopic joint and can be driven by a telescopic chain.

However, the guiding of the telescopic joint is realized by the cooperation between the vertical flanging and the guide groove on the guide base, the vertical flanging is stacked, the friction force received when the telescopic joint is pushed and pulled is large, meanwhile, the vertical space of the guide groove is large, the telescopic joint is easy to shake up and down, the guiding precision is low, the problem that the front part is inclined downwards is easy to occur in the telescopic process, the size of the longitudinal flanging cannot be designed to be too large, the thickness of a metal plate adopted by the telescopic joint is small, the bending size is large, the deformation is large, the telescopic joint is driven by a single side, the stress is unbalanced, the clamping stagnation and the disjointing can occur in the motion process of the multi-telescopic joint, and the high reliability is difficult to ensure; moreover, due to the limitation of the installation positions of the parts such as the circuit breaker and the isolation sleeve in the cabinet body, the sizes such as height, width and the like of the telescopic joint need to be designed in a detailed mode, and the longitudinal folded edge of the conventional telescopic joint needs to occupy a larger height space, so that the requirement of the detailed design cannot be well met.

Disclosure of Invention

The invention aims to provide a telescopic valve, which aims to solve the problem that the valve is disconnected and stuck due to the fact that the valve tilts backwards because guide structures of telescopic joints are stacked in the prior art; the invention also aims to provide a switch cabinet with the telescopic valve.

In order to achieve the purpose, the technical scheme of the telescopic valve is as follows: a telescopic valve comprises a guide base and telescopic joints movably arranged on the guide base from front to back, wherein the telescopic joints are sequentially nested, the front end and the rear end of each telescopic joint are respectively provided with a front limit structure and a rear limit structure which are used for being matched with front and rear stops of adjacent telescopic joints, the guide base is provided with a guide rail extending from front to back, the telescopic joints are provided with guide pieces matched with the guide rail in a guide moving mode, and the telescopic joints are arranged on the guide rail in a guide mode through the guide pieces in a front and rear guide mode.

The height of the front limiting structure and the height of the rear limiting structure are flush with the guide rail.

According to the order from back to front, the telescopic joint begins every two sections to be a set of from the end telescopic joint that is located the rearmost end, and the first telescopic joint that is located the foremost sets up alone or forms a set ofly rather than the adjacent telescopic joint at rear jointly, and the bottom front end and the bottom rear end of the telescopic joint in each group are equipped with preceding otic placode and back otic placode respectively, the guide sets up on corresponding preceding otic placode and back otic placode, the guide forms preceding, back limit structure, the guide setting between the guide on the back otic placode of the preceding telescopic joint in each group, the back otic placode.

Each group of expansion joints are respectively assembled on a guide rail which is independently corresponding to the group of expansion joints, and the first expansion joint is assembled on an independent guide rail or is assembled on an independent guide rail together with an adjacent expansion joint behind the first expansion joint; in the two adjacent front and rear telescopic joints, the rear ear plate of the rear telescopic joint of the front group is provided with an inter-group driving stop block, and the inter-group driving stop block is positioned between the front ear plate and the rear ear plate of the front telescopic joint of the rear group to be matched with the front ear plate and the rear ear plate in a blocking way.

Each guide rail extends forwards from the rear end of the guide base, and the length of the guide rail corresponding to each group of expansion joints only corresponds to the stroke of the group of expansion joints.

In the left and right directions, the side edge of the guide base is provided with a vertical folded edge, and the guide rail is arranged on the vertical folded edge.

Only one side of the telescopic joint in the left-right direction is arranged on the guide rail, and the bottom of the other side is provided with a roller and is supported on the guide base in a rolling manner through the roller.

The roller comprises a front roller positioned at the front end of the telescopic joint and a rear roller positioned at the rear end of the telescopic joint, the front roller is arranged on the outer side of the telescopic joint, and the rear roller is arranged on the inner side of the telescopic joint.

The switch cabinet comprises a cabinet body and a telescopic valve arranged on the cabinet body, wherein the telescopic valve comprises a guide base and telescopic joints movably arranged on the guide base from front to back, the telescopic joints are sequentially nested, the front end and the rear end of each telescopic joint are respectively provided with a front limit structure and a rear limit structure which are used for being matched with the front stop and the rear stop of the adjacent telescopic joint, the guide base is provided with a guide rail extending from front to back, the telescopic joint is provided with a guide piece matched with the guide rail in a guide and moving mode, and the telescopic joint is arranged on the guide rail in a front-and-back guide mode through the guide piece.

The invention has the beneficial effects that: the guide rail extending along the front and back is arranged on the guide base, and the guide piece matched with the guide rail in a guide movement mode is arranged on the expansion joint, so that the valve can realize complete guide in the horizontal and vertical directions through the guide rail and the guide piece, and front and back guide arrangement is formed.

Further, the telescopic joint can lead the setting on the guide rail through the guide around the guide, and preceding limit structure on the telescopic joint and back limit structure's height and guide rail parallel and level can make the power between the telescopic joint along guide rail extending direction interact simultaneously to avoid the telescopic joint atress unbalance and the slope appears, can avoid the telescopic joint to appear jamming and derail better.

Furthermore, the telescopic joint adopts a grouping form, and the guide piece of the front telescopic joint is arranged between the guide pieces of the front lug plate and the rear lug plate of the rear telescopic joint, so that the problem of large interval between the telescopic joints caused by the arrangement of the folded edge at the top of the telescopic joint in the prior art can be avoided, the size of the valve can be reduced, and the protective performance can be improved.

Furthermore, the guide rails of the telescopic joints are provided with more than two guide rails, the assembly is provided with the driving stop blocks, and compared with a mode that each telescopic joint is used for arranging the rear lug plate between the front lug plate and the rear lug plate corresponding to the rear telescopic joint, the interference between the two telescopic joints with one telescopic joint in the middle can be avoided, and the opening degree of the valve is ensured. For example to last telescopic joint, set gradually second telescopic joint, the third telescopic joint in last telescopic joint the place ahead, if the three all adopts the mode that sets up between the front and back otic placode of a back otic joint corresponding to back otic joint, when the valve was opened, because the guide on the otic placode is in same guide rail, then the back otic placode of third telescopic joint when moving the preceding otic placode department of last telescopic joint, the guide on the preceding otic placode of last telescopic joint will block the third telescopic joint and continue the backward movement and form the interference to lead to the unable and nested with last telescopic joint formation of third telescopic joint, finally lead to the maximum aperture of valve to reduce greatly.

Furthermore, in the left-right direction, the side edge of the guide base is provided with a vertical folding edge, and the guide rail is arranged on the vertical folding edge. By adopting the structure, the guide piece can be directly fixed on the outer side surfaces of the front ear plate and the rear ear plate, the nested combination mode of all telescopic joints can be adapted by additionally installing the gasket or adjusting the protruding size of the guide piece, and the assembly is flexible.

Furthermore, one side of the telescopic joint in the left-right direction is arranged on the guide rail, the bottom of the other side is provided with the roller and is supported on the guide base in a rolling mode through the roller, so that the telescopic joint has certain horizontal direction self-adaptive allowance in the telescopic process, the telescopic joint is prevented from being positioned excessively in the guide mode due to the problems of machining precision, deformation and the like, and smooth movement of the valve is better guaranteed.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of a switchgear of the present invention;

fig. 2 is a schematic perspective view of the telescopic shutter of fig. 1;

fig. 3 is a partial structural view of the fourth shutter in fig. 2;

FIG. 4 is a schematic view of the arrangement and assembly structure of the guide rail and each shutter in FIG. 2;

fig. 5 is a schematic view showing an assembly relationship between the double-layered guide rail and the slider in fig. 2.

The names corresponding to the reference numbers in the figure are 1-rear chain wheel, 2-fixed door, 3-first telescopic joint, 4-second telescopic joint, 5-third telescopic joint, 6-fourth telescopic joint, 7-short guide rail, 8-long guide rail, 9-guide base, 91-vertical folding edge, 10-chain, 11-front chain wheel, 12-slide block, 13-front roller, 14-rear roller, 15-front lug plate, 16-rear lug plate, 17-inter-group driving stop block, 18-cabinet body, 19-bus chamber, 20-isolation moving contact, 21-telescopic valve and 22-circuit breaker chamber.

Detailed Description

The following further describes embodiments of the present invention with reference to the drawings.

As shown in fig. 1 to 5, the switch cabinet of the present invention includes a cabinet 18, wherein the cabinet 18 is provided with a bus chamber 19, a three-phase isolation moving contact 20, a retractable shutter 21, and a breaker chamber 22, which are sequentially arranged from top to bottom, wherein the breaker chamber 22 only shows a top frame in the figure, and a main structure of the breaker chamber is not shown. The telescopic valve 21 comprises a guide base 9, the guide base 9 is provided with a front and back direction which is consistent with the arrangement direction of each main loop static contact corresponding to the moving contact on the switch cabinet, a contact mounting cavity for mounting the main loop static contact of the switch cabinet is arranged on the guide base 9, the rear end part of the guide base 9 is provided with a fixed door 2, four sections of movable doors are sequentially nested in the fixed door 2 and form telescopic sections, the four sections of telescopic doors are sequentially a first telescopic section 3, a second telescopic section 4, a third telescopic section 5 and a fourth telescopic section 6 from back to front, the first telescopic section 3 is the last telescopic section located at the rearmost end, and the fourth telescopic section 6 is the head telescopic section located at the foremost end. The fixed door 2 and the telescopic joints are in an inverted U shape along the cross section perpendicular to the front and back directions.

The guide base 9 is L-shaped in cross section, a vertical folding edge 91 is arranged on the left side of the guide base 9, an upper guide rail and a lower guide rail are arranged on the inner side wall of the vertical folding edge 91, the upper guide rail and the lower guide rail are both T-shaped guide rails with inward openings and extending along the front-back direction and are positioned in the same vertical plane, the upper guide rail is a short guide rail 7, the lower guide rail is a long guide rail 8, the rear end parts of the long guide rail 8 and the short guide rail 7 are positioned at the same positions, the lengths of the upper guide rail and the lower guide rail correspond to the strokes of the telescopic joints respectively, the front end of the short guide rail 7 is positioned in the middle of the guide base, the front end of the long guide rail is positioned at the forefront end of the guide base, the front end and the rear end of the bottom of each telescopic joint are respectively provided with a front lug plate 15 and a rear lug plate 16, sliders 12 are fixed on the outer sides of the front lug plate 15 and the rear lug plate 16 respectively through screws, the sliders 12 are T-shaped sliders 12, guide pieces movably matched with the guide rails are formed, and the telescopic joints are provided with a gasket which are arranged on the front lug plates and are arranged on the same telescopic joints.

According to the sequence from back to front, every two telescopic joints form a group from the tail telescopic joint at the rearmost end, and the head telescopic joint at the foremost end is independently arranged or forms a group together with the adjacent telescopic joint at the back. In this embodiment, the second expansion joint 4 and the first expansion joint 3 as the final expansion joint are a first group, the third expansion joint 5 and the fourth expansion joint 6 as the first expansion joint are a second group, the front ear plate 15 and the slider 12 on the rear ear plate 16 of each expansion joint in the first group are located in the upper layer of guide rail, the front ear plate 15 and the slider 12 on the rear ear plate 16 of each expansion joint in the second group are located in the lower layer of guide rail, and the slider 12 on the rear ear plate 16 of the front expansion joint in each group is arranged between the sliders 12 on the front and rear ear plates of the rear expansion joint. Through the structure, the height of the front limiting structure and the height of the rear limiting structure formed by the guide piece can be flush with the guide rail. An inter-group driving stop block 17 is fixed on the outer side surface of the rear ear plate 16 of the rear telescopic joint of the second group, and the inter-group driving stop block 17 is positioned between the front ear plate 15 and the rear ear plate 16 of the front telescopic joint of the first group to be matched with the front ear plate and the rear ear plate in a stopping way. The inter-group driving stopper 17 does not extend into the space between the front lug plate 15 and the rear lug plate 16 of the first telescopic joint 3 and does not extend into the guide rail on the upper layer, so that the inter-group driving stopper can only be in stop fit with the front lug plate 15 and the rear lug plate 16 of the second telescopic joint 4, and can be embedded into the second telescopic joint 4 to ensure the opening degree of the valve.

The bottom of the right side wall of each telescopic joint is provided with a roller and is supported on the guide base 9 through the rolling of the roller, the roller comprises a front roller 13 positioned at the front end of the telescopic joint and a rear roller 14 positioned at the rear end of the telescopic joint, the front roller 13 is arranged on the outer side of the telescopic joint, and the rear roller 14 is arranged on the inner side of the telescopic joint. The rollers adopt the alternate arrangement mode, so that the occupied space can be reduced, and the size fine design is facilitated.

The telescopic joint has an open position concentratedly nested at the rear end of the guide base 9 on the movement stroke of the telescopic joint and also has a closed position which is sequentially extended to completely shield the contact mounting cavity. Front and back both ends are provided with corresponding front sprocket 11 and rear sprocket 1 around respectively at the guide rail installation side of direction base 9, around being equipped with chain 10 between front sprocket 11 and the rear sprocket 1, be provided with the connecting plate of being connected with chain 10 on the lateral wall of the slider 12 installation side of fourth telescopic joint 6, can drive opening and closing of telescopic joint through the removal of chain 10. The front sprocket 11, the rear sprocket 1 and the chain 10 described above constitute a driving mechanism for driving the shutter 21 between the open position and the closed position.

When the valve opening and closing device is used, the front chain wheel 11 or the rear chain wheel 1 is connected to the corresponding valve driving motor, and the valve driving motor and the opening and closing driving mechanism act according to a set rule under the control of the corresponding control device to realize the matching of the opening and closing of the valve and the opening and closing action of the valve. The opening process of the valve is as follows: the fourth telescopic joint 6 pushes a sliding block 12 at the rear part of the third telescopic joint 5 through a sliding block 12 at the rear part, an inter-group driving stop block 17 on the third telescopic joint 5 drives a sliding block 12 at the rear part of the second telescopic joint 4, the sliding block 12 at the rear part of the second telescopic joint 4 drives a sliding block 12 at the rear part of the first telescopic joint 3, and finally, all the telescopic joints are retracted and nested in the fixed door 2 to be sequentially opened from front to back. The closing of the valve is opposite to the above process, and the valve is closed from front to back in sequence. The device adopts above-mentioned structure, and telescopic joint, direction base 9 are independent module, and direction base 9 passes through bolted connection with the cabinet body 18, have realized the modularization, can make things convenient for the whole dismouting of valve and change, and installation, maintenance are convenient, and the commonality is strong.

In other embodiments, the guide base 9 may also be configured as a flat plate, and the guide rail is disposed on the upper plate surface; or the guide base 9 is set to be U-shaped, the guide rails are additionally arranged on two sides, and the main body of the expansion joint can be set to be in other shapes, such as a flat plate shape. And each telescopic joint can be independently provided with a guide rail, and in order to adapt to the form that the telescopic joints are sequentially nested, the guide rails corresponding to the telescopic joints can also be arranged side by side up and down or arranged side by side left and right. In other embodiments, the number of telescopic joints of the telescopic shutter 21 may be increased or decreased according to the distribution requirement of the main circuit contacts.

In other embodiments, the front and rear limiting structures may be replaced by other forms, such as providing folded edges on the front and

rear ear plates

15 and 16 as the limiting structures, and relying on the front and rear end surfaces of the front and rear ear plates as the limiting structures. In addition, in other embodiments, the arrangement positions of the front limit structure and the rear limit structure may be staggered up and down with respect to the guide rail, for example, the limit structure adopted by the front and rear telescopic shutters in the prior art, but the front limit structure and the rear limit structure are preferably in a form that the height of the front limit structure and the rear limit structure is flush with the guide rail. It should be noted that the heights of the front limit structure and the rear limit structure are not exactly the same as the height of the guide rail, but refer to the general correspondence of the whole positions. For example, a flange may be provided as the front stopper and the rear stopper at a position substantially corresponding to the height of the guide rail on the front and rear end surfaces of the telescopic joint.

In other embodiments, the telescopic joints may not be arranged in groups, but are sequentially stopped by the sliding blocks on the ear plates, and in this case, the guide rail may also be provided as one rail. Of course, the structure can limit the opening degree of the valve, more front and back spaces need to be occupied, and clamping stagnation of the expansion joint and sequential opening of the expansion joint can be avoided.

The embodiment of the telescopic shutter according to the invention corresponds to the embodiment of the telescopic shutter 21 described above in the embodiment of the switchgear cabinet and will not be described in detail here.

Claims

1. The utility model provides a flexible valve, includes direction base and the telescopic joint of setting on the direction base with moving about the front and back, each telescopic joint nestification sets up in proper order, and the front end and the rear end of each telescopic joint are equipped with respectively and are used for with the preceding limit structure of adjacent telescopic joint front and back stop complex and back limit structure, its characterized in that: the guide base is provided with a guide rail extending along the front and the back, the telescopic joint is provided with a guide piece which is movably matched with the guide rail in a guide way, the telescopic joint is arranged on the guide rail in a front and back guide way through the guide piece, in the left and right direction, the side edge of the guide base is provided with a vertical folding edge, the guide rail is arranged on the vertical folding edge, every two telescopic joints are arranged into a group from the last telescopic joint at the rearmost end according to the sequence from back to front, the first telescopic joint at the foremost end is independently arranged or forms a group together with the adjacent telescopic joint at the rear, the front end of the bottom and the rear end of the bottom of the telescopic joint in each group are respectively provided with a front ear plate and a rear ear plate, the guide sets up on corresponding preceding otic placode and back otic placode, the guide forms preceding, back limit structure, the guide setting on the back otic placode of the preceding telescopic joint in each group between the guide on the preceding, back otic placode of back telescopic joint.

2. Telescopic shutter according to claim 1, characterised in that: the height of the front limiting structure and the height of the rear limiting structure are flush with the guide rail.

3. Telescopic shutter according to claim 1, characterised in that: each group of expansion joints are respectively assembled on a guide rail which is independently corresponding to the group of expansion joints, and the first expansion joint is assembled on an independent guide rail or is assembled on an independent guide rail together with an adjacent expansion joint behind the first expansion joint; in the two adjacent front and rear telescopic joints, the rear ear plate of the rear telescopic joint of the front group is provided with an inter-group driving stop block, and the inter-group driving stop block is positioned between the front ear plate and the rear ear plate of the front telescopic joint of the rear group to be matched with the front ear plate and the rear ear plate in a blocking way.

4. A telescopic shutter according to claim 3, characterised in that: each guide rail extends forwards from the rear end of the guide base, and the length of the guide rail corresponding to each group of expansion joints only corresponds to the stroke of the group of expansion joints.

5. A telescopic shutter according to any of claims 1-4, characterised in that: only one side of the telescopic joint in the left-right direction is arranged on the guide rail, and the bottom of the other side is provided with a roller and is supported on the guide base in a rolling manner through the roller.

6. A telescopic shutter according to claim 5, characterised in that: the roller comprises a front roller positioned at the front end of the telescopic joint and a rear roller positioned at the rear end of the telescopic joint, the front roller is arranged on the outer side of the telescopic joint, and the rear roller is arranged on the inner side of the telescopic joint.

7. Cubical switchboard, including the cabinet body and install the flexible valve on the cabinet body, its characterized in that: the telescopic shutter is as claimed in any one of claims 1 to 6.