CN111509579A

CN111509579A - Single-phase parallel active filter based on direct-current voltage period discrete control

Info

Publication number: CN111509579A
Application number: CN202010343578.2A
Authority: CN
Inventors: 李稳良; 胡江为
Original assignee: Zhejiang Wenshan Electric Technology Co ltd
Current assignee: Jiaxing sine Electric Co.,Ltd.
Priority date: 2020-04-27
Filing date: 2020-04-27
Publication date: 2020-08-07
Anticipated expiration: 2040-04-27
Also published as: CN111509579B

Abstract

The invention belongs to the technical field of power equipment, and particularly relates to a single-phase parallel active filter based on direct-current voltage period discrete control, which comprises a bearing mechanism, wherein the bearing mechanism comprises two supporting plates and four supporting columns, the two supporting plates are arranged in an up-and-down symmetrical manner, and the supporting columns are positioned between the two supporting plates; through using insulating push rod remote to pierce through the seal membrane, then promote the stopper to the inboard, the stopper slides along the slip case, horizontal inserted bar and vertical inserted bar are under the effect of connecting rod, slide to the inboard along the spread groove in the chute, horizontal inserted bar breaks away from the contact with horizontal slot with the support column, vertical slot in vertical inserted bar and the backup pad breaks away from the contact, at this moment, horizontal inserted bar and vertical inserted bar break away from the contact with backup pad and support column, the fixed plate does not have any restriction, can directly take place to drop, personnel need not be close to and open, the security is higher.

Description

Single-phase parallel active filter based on direct-current voltage period discrete control

Technical Field

The invention belongs to the technical field of power equipment, and particularly relates to a single-phase parallel active filter based on direct-current voltage period discrete control.

Background

In recent years, with the wide application of power electronic equipment and nonlinear and impact equipment, harmonic pollution is generated in a power grid, the harmonic pollution brings serious harm to a power grid system, a power supply department and power users, particularly with the development of scientific technology and national economy, various complex and precise power equipment sensitive to the quality of electric energy is continuously popularized, the requirement of the users on the quality of the electric energy is higher and higher, the parallel passive filter which is commonly adopted at present has poor filtering effect, the power grid harmonic is dynamically compensated in real time by adopting the modern power electronic technology, the digital signal processing technology and the active power filter technology of an advanced control theory, so that the active power filter can be considered as the most effective and most potential way for solving the problem of the harmonic pollution at present, and compared with the traditional passive filter, the active power filter has the advantages of being capable of compensating each harmonic, inhibiting flicker, reducing the noise and reducing the noise, Reactive power compensation, automatic tracking compensation of changed harmonic waves and the like.

Chinese patent with publication number CN207039190U discloses an active filter, and this patent technology is through setting up the dust screen for the inside difficult dust that gets into of active filter body, through setting up the base that has the liftable wheel, has made things convenient for the removal of active filter body, but the connected mode of its door plant and casing is comparatively fixed, all needs to be opened closely and dismantle, when taking place the electric leakage or catching fire, personnel need be close to and open the door plant, and is dangerous great.

Disclosure of Invention

To solve the problems set forth in the background art described above. The invention provides a single-phase parallel active filter based on direct-current voltage period discrete control, which has the characteristic of easy opening.

In order to achieve the purpose, the invention provides the following technical scheme: the single-phase parallel active filter based on the direct-current voltage period discrete control comprises a bearing mechanism, wherein the bearing mechanism comprises two support plates and two support columns, the number of the support plates is four, the two support plates are arranged in an up-down symmetrical manner, the support columns are positioned between the two support plates, the four support columns are respectively fixed at four corners of the support plates, one side surface of each support plate is hinged with a closed door, the other three side surfaces of each support plate can be detachably connected with a fixed plate, the middle position of each fixed plate is provided with a mounting hole, each fixed plate is provided with a limiting mechanism, each limiting mechanism comprises a limiting block, two transverse insertion rods and a vertical insertion rod, each limiting block is provided with four inclined surfaces, each inclined surface is provided with an inclined groove, and the two transverse insertion rods are arranged in a horizontal symmetrical manner, two vertical inserted bar is vertical symmetrical arrangement, horizontal inserted bar reaches vertical inserted bar respectively with corresponding chute sliding connection, the slip case is installed to the inboard of fixed plate, the slip case inlays to establish to be fixed the mounting hole is inboard, the stopper slides the slip incasement wall, horizontal inserted bar with vertical inserted bar all slides and runs through the fixed plate reaches the slip case, two the three side of backup pad all seted up with the corresponding vertical slot of vertical inserted bar, seted up on the support column with the corresponding horizontal slot of horizontal inserted bar.

Preferably, the middle position of the limiting block is provided with a threaded through hole.

Preferably, the bottom surface of stopper is outer along a week bonding and is fixed with the sealing strip, the sealing strip with the inner wall sliding contact of sliding box.

Preferably, one end of the threaded through hole is in threaded connection with a threaded pipe, and the inner side wall of the threaded pipe is in sealing connection with a sealing film.

Preferably, the sealing film is made of rubber.

Preferably, a handle is fixedly connected to the closing door, and the handle is located at the middle position of one side of the closing door.

Preferably, the handle is made of plastic.

Preferably, the sealing strip is made of rubber and has a thickness of 5 mm.

Preferably, the side wall of the chute is provided with symmetrically arranged connecting grooves.

Preferably, the horizontal inserted bar and the vertical inserted bar are connected with the connecting groove in the chute in a sliding manner through connecting rods.

Compared with the prior art, the invention has the beneficial effects that:

1. this single-phase parallel active filter based on direct current voltage cycle discrete control, through using the long distance seal membrane that pierces through of insulating push rod, then promote the stopper to the inboard, the stopper slides along the slip case, horizontal inserted bar and vertical inserted bar are under the effect of connecting rod, slide to the inboard along the spread groove in the chute, horizontal inserted bar breaks away from the contact with support column and horizontal slot, vertical slot break away from the contact in vertical inserted bar and the backup pad, at this moment, horizontal inserted bar and vertical inserted bar break away from the contact with backup pad and support column, the fixed plate does not have any restriction, can directly take place to drop, personnel need not be close to and open, the security is higher.

2. This single-phase parallel connection active filter based on discrete control of direct current voltage cycle through demolising original screwed pipe, changes the screwed pipe that has new seal membrane, repeatedly usable.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of a limiting mechanism according to the present invention;

FIG. 3 is an enlarged view of the point A in FIG. 2;

FIG. 4 is an enlarged view of the point B in FIG. 2;

FIG. 5 is an enlarged view of FIG. 2 at C;

FIG. 6 is a schematic view of the structure of the sliding box of the present invention;

fig. 7 is a schematic view of a threaded pipe according to the present invention.

In the figure: 1. a carrying mechanism; 11. a support plate; 101. a vertical slot; 102. a transverse slot; 12. a support pillar; 13. a fixing plate; 131. mounting holes; 14. a closing door; 141. a handle; 2. a limiting mechanism; 201. a bevel; 202. a chute; 203. a threaded through hole; 21. a limiting block; 22. a transverse insertion rod; 23. a vertical insertion rod; 24. a threaded pipe; 241. a sealing film; 25. a slide box; 26. a sealing strip.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-7, the present invention provides the following technical solutions: the single-phase parallel active filter based on the direct-current voltage period discrete control comprises a bearing mechanism 1, wherein the bearing mechanism 1 comprises two support plates 11 and two support columns 12, the number of the support plates 11 is two, the number of the support columns 12 is four, the two support plates 11 are arranged in an up-down symmetrical manner, the support columns 12 are positioned between the two support plates 11, the four support columns 12 are respectively fixed at four corners of the support plates 11, one side surface of each support plate 11 is hinged with a closed door 14, the other three side surfaces of each support plate 11 can be detachably connected with a fixed plate 13, a mounting hole 131 is formed in the middle position of the fixed plate 13, limiting mechanisms 2 are respectively arranged on the fixed plate 13, each limiting mechanism 2 comprises a limiting block 21, two transverse insertion rods 22 and a vertical insertion rod 23, four inclined planes 201 are formed on the limiting block 21, inclined grooves 202 are respectively formed on the inclined planes 201, horizontal inserted bar 22 and vertical inserted bar 23 respectively with corresponding chute 202 sliding connection, sliding box 25 is installed to the inboard of fixed plate 13, sliding box 25 inlays to be established and fixes in mounting hole 131 inboardly, stopper 21 slides at sliding box 25 inner wall, horizontal inserted bar 22 and vertical inserted bar 23 all slide and run through fixed plate 13 and sliding box 25, vertical slot 101 corresponding with vertical inserted bar 23 is all seted up to two backup pads 11 three sides, set up on the support column 12 with horizontal slot 102 corresponding with horizontal inserted bar 22.

In this embodiment: the transverse insertion rod 22 is inserted in the transverse slot 102, the vertical insertion rod 23 is inserted in the vertical slot 101, as the sealing membrane 241 is connected to the screwed pipe 24 in a sealing manner, the sealing strip 26 seals the limiting block 21, the air pressure in the space between the sliding box 25 and the limiting block 21 is constant, the limiting block 21 cannot slide, the transverse insertion rod 22 and the vertical insertion rod 23 are limited, the fixing plate 13 is detachably connected to the two supporting plates 11, when the filter is used, the electric equipment of the filter is arranged at the inner sides of the two supporting plates 11 and the fixing plate 13, if the electric equipment leaks electricity or burns futures, a person cannot approach and open the sealing door 14, the insulating push rod is used for penetrating the sealing membrane 241 remotely, then the limiting block 21 is pushed inwards, the limiting block 21 slides along the sliding box 25, the transverse insertion rod 22 and the vertical insertion rod 23 slide inwards along the connecting groove in the, the transverse inserted bar 22 and the supporting column 12 are separated from the contact with the transverse slot 102, the vertical inserted bar 23 and the vertical slot 101 in the supporting plate 11 are separated from the contact, at the moment, the transverse inserted bar 22 and the vertical inserted bar 23 are separated from the contact with the supporting plate 11 and the supporting column 12, the fixing plate 13 has no limitation, can directly fall off, personnel do not need to be close to and opened, the safety is high, after the sealing door is used, the original threaded pipe 24 can be detached, the threaded pipe 24 with a new sealing film 241 is replaced, the sealing door can be repeatedly used, and in a normal state, the sealing door 14 can be pulled through the handle 141 to open and close the sealing door 14.

Specifically, a threaded through hole 203 is formed in the middle of the limiting block 21, a sealing strip 26 is fixedly bonded to the outer edge of the bottom surface of the limiting block 21 along a circle, the sealing strip 26 is in sliding contact with the inner wall of the sliding box 25, a threaded pipe 24 is connected to one end of the threaded through hole 203 in a threaded manner, and a sealing film 241 is connected to the inner side wall of the threaded pipe 24 in a sealing manner; because sealing connection has seal membrane 241 on the screwed pipe 24, sealing strip 26 seals stopper 21, and the space atmospheric pressure between slip case 25 and the stopper 21 is invariable, and stopper 21 is unable to slide, carries on spacingly to horizontal inserted bar 22 and vertical inserted bar 23.

Specifically, the sealing film 241 is made of rubber; the sealing performance is better, and puncture is easier.

Specifically, a handle 141 is fixedly connected to the closing door 14, and the handle 141 is located at the middle position of one side of the closing door 14; in a normal state, the closing door 14 can be opened and closed by pulling the closing door 14 with the handle 141.

Specifically, the handle 141 is made of plastic; the paint can not be rusted, and has good insulativity and higher safety.

Specifically, the sealing strip 26 is made of rubber, the sealing performance of the sealing strip 26 made of rubber is good, the thickness of the sealing strip is 5 millimeters, and good sealing performance is guaranteed.

Specifically, the connecting groove of symmetrical arrangement is seted up to chute 202's lateral wall, horizontal inserted bar 22 and vertical inserted bar 23 all pass through connecting rod and chute 202 in connecting groove sliding connection, stopper 21 slides along slip case 25, horizontal inserted bar 22 and vertical inserted bar 23 slide to the inboard along the connecting groove in chute 202 under the effect of connecting rod, horizontal inserted bar 22 breaks away from the contact with support column 12 and horizontal slot 102, vertical inserted bar 23 breaks away from the contact with vertical slot 101 in the backup pad 11.

The working principle and the using process of the invention are as follows: the transverse insertion rod 22 is inserted in the transverse slot 102, the vertical insertion rod 23 is inserted in the vertical slot 101, as the sealing membrane 241 is connected to the screwed pipe 24 in a sealing manner, the sealing strip 26 seals the limiting block 21, the air pressure in the space between the sliding box 25 and the limiting block 21 is constant, the limiting block 21 cannot slide, the transverse insertion rod 22 and the vertical insertion rod 23 are limited, the fixing plate 13 is detachably connected to the two supporting plates 11, when the filter is used, the electric equipment of the filter is arranged at the inner sides of the two supporting plates 11 and the fixing plate 13, if the electric equipment leaks electricity or burns futures, a person cannot approach and open the sealing door 14, the insulating push rod is used for penetrating the sealing membrane 241 remotely, then the limiting block 21 is pushed inwards, the limiting block 21 slides along the sliding box 25, the transverse insertion rod 22 and the vertical insertion rod 23 slide inwards along the connecting groove in the, the transverse inserted bar 22 and the support column 12 are separated from the transverse slot 102, the vertical inserted bar 23 is separated from the vertical slot 101 on the support plate 11, at the moment, the transverse inserted bar 22 and the vertical inserted bar 23 are separated from the support plate 11 and the support column 12, the fixing plate 13 has no limitation, can directly fall off, personnel do not need to be close to and opened, the safety is higher, after the device is used, the original threaded pipe 24 can be detached, the threaded pipe 24 with a new sealing membrane 241 is replaced, the device can be reused, in a normal state, the sealing door 14 can be pulled through the handle 141 to realize the opening and closing of the sealing door 14, in the resetting process, the limiting block 21 is pulled outwards, the transverse inserted bar 22 and the vertical inserted bar 23 slide outwards along the connecting slot in the chute 202 under the action of the connecting bar to reset, the transverse inserted bar 22 is inserted in the transverse slot 102, the vertical inserted bar 23 is inserted in the vertical slot, demolish original screwed pipe 24, the change has the screwed pipe 24 of new seal membrane 241, space between slip case 25 and stopper 21 is sealed again, repeatedly usable, the sealing strip 26 sealing performance of rubber material is better, and thickness is 5 millimeters, guarantee good sealing performance, the material of handle 141 is plastics, can not take place the corrosion, and have good insulating nature, the security is higher, the material of seal membrane 241 is rubber, the leakproofness is better, and puncture more easily.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. Single-phase parallel active filter based on direct current voltage cycle discrete control, including bearing mechanism (1), bear mechanism (1) including backup pad (11) and support column (12), the quantity of backup pad (11) is two, the quantity of support column (12) is four, two backup pad (11) are the longitudinal symmetry and arrange, support column (12) are located two between backup pad (11), four support column (12) are fixed respectively in the four corners of backup pad (11), backup pad (11) one side articulates there is closed door (14), backup pad (11) other three sides all can be dismantled and be connected with fixed plate (13), its characterized in that: the middle position of the fixing plate (13) is provided with a mounting hole (131), the fixing plate (13) is provided with a limiting mechanism (2), the limiting mechanism (2) comprises a limiting block (21), two transverse inserting rods (22) and vertical inserting rods (23), the limiting block (21) is provided with four inclined planes (201), the inclined planes (201) are provided with inclined grooves (202), the two transverse inserting rods (22) are horizontally and symmetrically arranged, the two vertical inserting rods (23) are vertically and symmetrically arranged, the transverse inserting rods (22) and the vertical inserting rods (23) are respectively in sliding connection with the corresponding inclined grooves (202), the inner side of the fixing plate (13) is provided with a sliding box (25), the sliding box (25) is embedded and fixed on the inner side of the mounting hole (131), and the limiting block (21) slides on the inner wall of the sliding box (25), horizontal inserted bar (22) with vertical inserted bar (23) all slides and runs through fixed plate (13) and slide box (25), two vertical slot (101) corresponding with vertical inserted bar (23) have all been seted up to three side in backup pad (11), seted up on support column (12) with horizontal slot (102) corresponding with horizontal inserted bar (22).

2. The single-phase parallel active filter based on the discrete control of the direct-current voltage period according to claim 1, characterized in that: the middle position of the limiting block (21) is provided with a threaded through hole (203).

3. The single-phase parallel active filter based on the discrete control of the direct-current voltage period according to claim 1, characterized in that: the bottom surface of stopper (21) is outer along a week bonding and is fixed with sealing strip (26), sealing strip (26) with the inner wall sliding contact of slip box (25).

4. The single-phase parallel active filter based on the discrete control of the direct-current voltage period according to claim 2, characterized in that: one end of the threaded through hole (203) is in threaded connection with a threaded pipe (24), and the inner side wall of the threaded pipe (24) is in sealing connection with a sealing film (241).

5. The single-phase parallel active filter based on the discrete control of the direct-current voltage period according to claim 4, wherein: the sealing film (241) is made of rubber.

6. The single-phase parallel active filter based on the discrete control of the direct-current voltage period according to claim 1, characterized in that: the closing door (14) is fixedly connected with a handle (141), and the handle (141) is located at the middle position of one side of the closing door (14).

7. The single-phase parallel active filter based on the discrete control of the direct-current voltage period as claimed in claim 6, wherein: the handle (141) is made of plastic.

8. The single-phase parallel active filter based on the discrete control of the direct-current voltage period according to claim 3, wherein: the sealing strip (26) is made of rubber and has a thickness of 5 mm.

9. The single-phase parallel active filter based on the discrete control of the direct-current voltage period according to claim 1, characterized in that: the side wall of the chute (202) is provided with symmetrically arranged connecting grooves.

10. The single-phase parallel active filter based on the discrete control of the direct-current voltage period according to claim 9, wherein: the horizontal insertion rod (22) and the vertical insertion rod (23) are connected with the connecting groove in the chute (202) in a sliding mode through connecting rods.