CN221080928U

CN221080928U - Anti-reflux device

Info

Publication number: CN221080928U
Application number: CN202322382008.6U
Authority: CN
Inventors: 梁存; 何海昌; 周振泉
Original assignee: Shenzhen Biwate Technology Co ltd
Current assignee: Shenzhen Biwate Technology Co ltd
Filing date: 2023-08-31
Publication date: 2024-06-04
Anticipated expiration: 2033-08-31

Abstract

The utility model relates to an anti-countercurrent device, which comprises a support frame and a junction box, wherein a mounting assembly comprises a connecting plate arranged on one side of the junction box, clamping teeth are arranged on two sides of the connecting plate, two connecting frames are arranged on one side of the support frame, hole grooves are formed in the two connecting frames, a top plate and a plurality of first springs are arranged in the hole grooves, racks are arranged on one side, away from the hole grooves, of the top plate, sliding blocks are arranged on two ends of the top plate, and a pressing rod is arranged on the other end of one sliding block.

Description

Anti-reflux device

Technical Field

The utility model relates to the technical field of anti-reflux devices, in particular to an anti-reflux device.

Background

Balcony photovoltaic is a novel photovoltaic power generation technology, and a photovoltaic panel can be installed on a balcony to generate electric energy by absorbing sunlight. The balcony photovoltaic power generation system is generally composed of photovoltaic panels, inverters, controllers and the like.

However, with the development of balcony photovoltaics in the prior art, the market has more and more demands on plug-and-play photovoltaic systems, and the photovoltaic systems do not need professional personnel to install. The photovoltaic system can track the load of the home power grid dynamically, and balcony photovoltaic must be able to prevent the current of the photovoltaic from flowing to the power grid. In the installation of existing anti-reflux devices, specialized personnel are required for installation, and there are challenges in interoperability, intelligence and adaptation.

Disclosure of utility model

The present utility model is directed to an anti-backflow device, which solves the above-mentioned problems of the prior art.

In order to achieve the above purpose, the present utility model provides the following technical solutions:

The utility model provides an anti-reflux device, includes support frame and terminal box, the support frame outside is provided with the installation component that is used for installing the terminal box, installation component is including setting up the connecting plate in terminal box one side, the connecting plate both sides all are provided with the latch, support frame one side is provided with two link, two the inside hole groove that all is provided with of link, hole inslot portion is provided with roof and a plurality of first spring, roof is kept away from hole groove one side and is provided with the rack, roof both ends all are provided with the slider, one of them the slider other end is provided with the depression bar, hole inslot wall is provided with two spouts, two the spout is inside all to be provided with the slide bar, one of them spout one side is provided with the cavity, the cavity is inside to be provided with induction plate and storage tank, storage tank inside is provided with installing frame and spacing groove, spacing inslot portion is provided with second spring and connecting rod, installing frame inside is provided with third spring and fixture block.

As a preferable scheme of the utility model, the photovoltaic panel is arranged at the top of the supporting frame, the two connecting frames are connected with the outer wall of the supporting frame through bolts, the connecting plates are connected with the outer wall of the junction box through bolts, the latch is connected with the outer wall of the connecting plates through welding, the connecting plates can be connected with the inner wall of the connecting frames in a sliding manner, and the latch is in contact engagement with the rack outside the top plate.

As a preferable scheme of the utility model, two ends of the plurality of first springs are connected with the top plate and the inner wall of the hole groove through welding, the top plate is connected with the inner wall of the hole groove through a sliding rail in a sliding way, two sliding blocks are connected with two ends of the top plate through welding, and the sliding blocks extend into the sliding grooves.

As a preferable scheme of the utility model, the sliding rod is connected with the inner wall of the sliding groove through a bolt, the sliding block is in sliding connection with the inner wall of the sliding groove through a sliding rail, the sliding rod penetrates through the sliding block and is in contact with the inner wall of the sliding block, one sliding groove is communicated with the cavity, one sliding block is connected with the pressing rod through a bolt, and the other end of the pressing rod extends into the cavity.

As a preferable scheme of the utility model, the sensing plate is connected with the inner wall of the cavity through a bolt, the pressing rod is contacted with the sensing plate, and the cavity and the limit groove are communicated with the containing groove.

As a preferable scheme of the utility model, the connecting rod is in sliding connection with the inner wall of the limit groove through the sliding rail, one end of the connecting rod can extend into the storage groove, the other end of the connecting rod can extend out of the limit groove, two ends of the second spring are connected with the connecting rod and the inner wall of the limit groove through welding, and one end, close to the storage groove, of the connecting rod is connected with the mounting frame through a bolt.

As a preferable scheme of the utility model, the mounting frame is in sliding contact with the inner wall of the storage groove, two ends of the third spring are connected with the inner wall of the mounting frame and the clamping block through welding, the mounting frame can extend into the cavity, and one end of the clamping block, which is far away from the mounting frame, can be in contact with the induction plate through the third spring.

Compared with the prior art, the utility model has the beneficial effects that: in order to solve the problems in the background art, the utility model adopts a mounting assembly, and 1, when the load in the power grid increases or decreases, the power grid frequency is influenced. This is because the grid must maintain a balance between power supply and load. When the load increases, the grid needs to supply more power, resulting in an increase in the generated output power, thus slightly increasing the frequency. Conversely, when the load decreases, the grid needs to supply less power, resulting in a decrease in the generated output power and a slight decrease in frequency. I.e. injecting high frequency and low frequency signals into the home network, and adjusting the power emitted by the photovoltaic in real time when the frequency of the feedback deviates from the frequency actually existing in the network. Meanwhile, the device collects the current and the voltage of the power grid in real time, analyzes and judges the countercurrent phenomenon by utilizing digital signal processing, and then cooperates with a control strategy, and once countercurrent is detected, corresponding measures can be taken to control countercurrent prevention.

2. The junction box can be installed on the support below the photovoltaic panel through the installation component, so that the junction box is stored, the risk of false touch on a balcony is prevented from being placed, the junction box is located below the photovoltaic panel, and the photovoltaic panel can also play a protective role on the junction box.

The utility model realizes that no extra ammeter is needed for connection, can intelligently monitor the load condition of the system, timely process the countercurrent condition, does not need installation by a loading personnel, saves high installation cost, can prevent the risk of false touch when people pass by when the junction box and the photovoltaic frame are installed, and protects the junction box by utilizing the photovoltaic panel.

Drawings

FIG. 1 is a block diagram of a photovoltaic rack of the present utility model;

FIG. 2 is a block diagram of the junction box of the present utility model;

FIG. 3 is a cross-sectional view of a connector of the present utility model;

FIG. 4 is an enlarged view of the portion A of the present utility model;

FIG. 5 is a diagram of the internal system of the junction box of the present utility model;

FIG. 6 is a cross-sectional view of a slide bar of the present utility model.

In the figure: 1. a support frame; 2. a junction box; 201. a connecting plate; 202. latch teeth; 3. a connecting frame; 301. a hole groove; 302. a first spring; 4. a top plate; 401. a rack; 402. a slide block; 403. a compression bar; 5. a chute; 501. a slide bar; 6. a cavity; 601. an induction plate; 602. a storage groove; 7. a limit groove; 701. a second spring; 702. a connecting rod; 8. a mounting frame; 801. a third spring; 802. and (5) clamping blocks.

Detailed Description

The technical solutions in the embodiments of the present utility model will be clearly and completely described below in connection with the embodiments of the present utility model.

Examples

Referring to fig. 1-6, the present utility model provides a technical solution: an anti-countercurrent device comprises a support frame 1 and a junction box 2, wherein an installation component for installing the junction box 2 is arranged outside the support frame 1, the installation component comprises a connecting plate 201 arranged on one side of the junction box 2 and used for conveniently installing the junction box 2 and the junction box 3, clamping teeth 202 are arranged on two sides of the connecting plate 201 and can be meshed with racks 401 in the junction box 3 so as to fix the position of the junction box 2 in the junction box 3, two junction boxes 3 are arranged on one side of the support frame 1, holes 301 are formed in the two junction boxes 3, a top plate 4 can be contracted, a plurality of first springs 302 are arranged in the holes 301, the first springs 302 can support the top plate 4 and can contract, racks 401 are arranged on one side of the top plate 4 away from the holes 301, sliding blocks 402 are arranged on two ends of the top plate 4, the angle of the top plate 4 sliding in the hole groove 301 can be limited, one of the other ends of the sliding blocks 402 is provided with a pressing rod 403, the connecting plate 201 can drive the top plate 4 to slide and shrink in the hole groove 301 through the contact of the latch 202 with the rack 401 during installation, the compression can drive the pressing rod 403 to contact the sensing plate 601 at the same time, the inner wall of the hole groove 301 is provided with two sliding grooves 5, the sliding rods 501 are arranged in the two sliding grooves 5, a locking mechanism is arranged in the sliding rod 501 and consists of a pneumatic pump and a locking block, when the sensing plate 601 transmits a sensing signal, the pneumatic pump can be controlled to only increase the air pressure in the sliding rod 501 so as to enable the locking block to extend out to lock the sliding block 402, one side of one sliding groove 5 is provided with a cavity 6, the cavity 6 is internally provided with a sensing plate 601 and a containing groove 602, the sensing plate 601 can control the locking mechanism in the sliding rod 501 to lock the sliding block 402 through sensing times, thereby make it uncontractable to roof 4 is fixed to fixed to connecting plate 201 position, the response number of times of locking is the same with the quantity of rack 401, is touching contactable locking once after locking, accomodate inslot 602 and be provided with installing frame 8 and spacing groove 7, spacing groove 7 inside is provided with second spring 701 and connecting rod 702, installing frame 8 inside is provided with third spring 801 and fixture block 802, and connecting rod 702 can drive installing frame 8 and stretch into in the cavity 6, thereby makes fixture block 802 touch sensing board 601 contact locking.

As the load in the grid increases or decreases, it can have an impact on the grid frequency. This is because the grid must maintain a balance between power supply and load. When the load increases, the grid needs to supply more power, resulting in an increase in the generated output power, thus slightly increasing the frequency. Conversely, when the load decreases, the grid needs to supply less power, resulting in a decrease in the generated output power and a slight decrease in frequency. I.e. injecting high frequency and low frequency signals into the home network, and adjusting the power emitted by the photovoltaic in real time when the frequency of the feedback deviates from the frequency actually existing in the network. Meanwhile, the device collects the current and the voltage of the power grid in real time, and analyzes and judges the countercurrent phenomenon by utilizing digital signal processing. Then, in cooperation with a control strategy, once the countercurrent is detected, corresponding measures can be taken to control the countercurrent prevention. Therefore, the photovoltaic system with the anti-reflux function can be used in a plug-and-play mode without professional installation.

All electrical components in this embodiment are controlled by a conventional controller.

Referring to fig. 1-6, a photovoltaic panel is mounted on top of the supporting frame 1, two connecting frames 3 are connected with an outer wall of the supporting frame 1 through bolts, a connecting plate 201 is connected with an outer wall of a junction box 2 through bolts, a latch 202 is connected with an outer wall of the connecting plate 201 through welding, the connecting plate 201 can be slidably connected with an inner wall of the connecting frame 3, the latch 202 is in contact engagement with a rack 401 outside a top plate 4, two ends of a plurality of first springs 302 are connected with the top plate 4 and an inner wall of a hole 301 through welding, the top plate 4 is slidably connected with an inner wall of the hole 301 through a sliding rail, two sliding blocks 402 are connected with two ends of the top plate 4 through welding, and the sliding blocks 402 extend into a sliding groove 5, a sliding rod 501 is connected with an inner wall of the sliding groove 5 through a sliding rail, the sliding blocks 501 penetrate through the sliding blocks 402 and are in contact with an inner wall of the sliding blocks 402, one of the sliding grooves 5 is communicated with the cavity 6, one of the sliding blocks 402 is connected with the pressing rod 403 through a bolt, the other end of the pressing rod 403 extends into the cavity 6, the sensing plate 601 is connected with the inner wall of the cavity 6 through a bolt, the pressing rod 403 contacts with the sensing plate 601, the cavity 6 and the limiting groove 7 are both communicated with the containing groove 602, the connecting rod 702 is slidably connected with the inner wall of the limiting groove 7 through a sliding rail, one end of the connecting rod 702 can extend into the containing groove 602, the other end of the connecting rod 702 can extend out of the limiting groove 7, two ends of the second spring 701 are connected with the connecting rod 702 and the inner wall of the limiting groove 7 through welding, one end of the connecting rod 702 close to the containing groove 602 is connected with the mounting frame 8 through a bolt, the mounting frame 8 is in sliding contact with the inner wall of the containing groove 602, two ends of the third spring 801 are connected with the inner wall of the mounting frame 8 and the clamping block 802 through welding, the mounting frame 8 may extend into the cavity 6, and an end of the clamping block 802 away from the mounting frame 8 may contact the sensing plate 601 through the third spring 801. When the connecting plate 201 is used, firstly, the connecting plate 201 is mounted in the connecting frame 3 in a sliding way, during mounting, the clamping teeth 202 on the outer wall of the connecting plate 201 are contacted with the racks 401 to push the top plate 4 to shrink inwards in the hole groove 301, meanwhile, the pressing rod 403 on the sliding block 402 at one end of the top plate 4 is lifted and lowered in the cavity 6 to contact the sensing plate 601, and when the contact times of the sensing plate 601 reach the designated number, the locking mechanism in the sliding rod 501 is controlled to lock the sliding block 402, so that the junction box 2 is fixed; when the connecting rod 702 is needed to be taken out, the connecting rod 702 can drive the mounting frame 8 to extend into the cavity 6, so that the clamping block 802 touches the sensing plate 601 to be in contact locking. The utility model realizes that no extra ammeter is needed for connection, can intelligently monitor the load condition of the system, timely process the countercurrent condition, does not need installation by a loading personnel, saves high installation cost, can prevent the risk of false contact when people pass by when the junction box 2 and the photovoltaic frame are installed, and protects the junction box 2 by utilizing the photovoltaic panel.

The working flow of the utility model is as follows: when the connecting plate 201 is used, firstly, the connecting plate 201 is mounted in the connecting frame 3 in a sliding way, during mounting, the clamping teeth 202 on the outer wall of the connecting plate 201 are contacted with the racks 401 to push the top plate 4 to shrink inwards in the hole groove 301, meanwhile, the pressing rod 403 on the sliding block 402 at one end of the top plate 4 is lifted and lowered in the cavity 6 to contact the sensing plate 601, and when the contact times of the sensing plate 601 reach the designated number, the locking mechanism in the sliding rod 501 is controlled to lock the sliding block 402, so that the junction box 2 is fixed; when the connecting rod 702 is needed to be taken out, the connecting rod 702 can drive the mounting frame 8 to extend into the cavity 6, so that the clamping block 802 touches the sensing plate 601 to be in contact locking. The utility model realizes that no extra ammeter is needed for connection, can intelligently monitor the load condition of the system, timely process the countercurrent condition, does not need installation by a loading personnel, saves high installation cost, can prevent the risk of false contact when people pass by when the junction box 2 and the photovoltaic frame are installed, and protects the junction box 2 by utilizing the photovoltaic panel.

Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an anti-reflux device, includes support frame (1) and terminal box (2), support frame (1) outside is provided with the installation component that is used for installing terminal box (2), its characterized in that: the mounting assembly comprises a connecting plate (201) arranged on one side of a junction box (2), clamping teeth (202) are arranged on two sides of the connecting plate (201), two connecting frames (3) are arranged on one side of a supporting frame (1), hole grooves (301) are formed in the connecting frames (3), top plates (4) and a plurality of first springs (302) are arranged inside the hole grooves (301), racks (401) are arranged on one side, far away from the hole grooves (301), of the top plates (4), sliding blocks (402) are arranged at two ends of the top plates (4), one sliding block (402) is provided with a pressing rod (403), two sliding grooves (5) are formed in the inner wall of the hole grooves (301), sliding rods (501) are arranged inside the two sliding grooves (5), one sliding grooves (5) are provided with cavities (6), sensing plates (601) and storage grooves (602) are formed inside the cavities (6), mounting frames (8) and limiting grooves (7) are formed inside the storage grooves, and the second springs (802) and the third springs (801) are arranged inside the limiting grooves (7).

2. An anti-reflux device as set forth in claim 1, wherein: photovoltaic board is installed at support frame (1) top, two link (3) all pass through bolt and support frame (1) outer wall connection, connecting plate (201) pass through bolt and terminal box (2) outer wall connection, latch (202) pass through welding and connecting plate (201) outer wall connection, connecting plate (201) can with link (3) inner wall sliding connection, latch (202) and the outside rack (401) contact engagement of roof (4).

3. An anti-reflux device as set forth in claim 1, wherein: a plurality of first spring (302) both ends all are connected with roof (4) and hole groove (301) inner wall through the welding, roof (4) are through slide rail and hole groove (301) inner wall sliding connection, two slider (402) all are connected with roof (4) both ends through the welding, and slider (402) all extend to in spout (5).

4. An anti-reflux device as set forth in claim 1, wherein: the sliding rod (501) is connected with the inner wall of the sliding groove (5) through a bolt, the sliding block (402) is connected with the inner wall of the sliding groove (5) in a sliding mode through a sliding rail, the sliding rod (501) penetrates through the sliding block (402) and is in contact with the inner wall of the sliding block (402), one sliding groove (5) is communicated with the cavity (6), one sliding block (402) is connected with the pressing rod (403) through a bolt, and the other end of the pressing rod (403) extends into the cavity (6).

5. An anti-reflux device as set forth in claim 1, wherein: the induction plate (601) is connected with the inner wall of the cavity (6) through bolts, the compression bar (403) is in contact with the induction plate (601), and the cavity (6) and the limit groove (7) are communicated with the containing groove (602).

6. An anti-reflux device as set forth in claim 1, wherein: connecting rod (702) are through slide rail and spacing groove (7) inner wall sliding connection, and other end in connecting rod (702) one end can extend to accomodate groove (602) can follow spacing groove (7) and stretch out to outside, second spring (701) both ends are all through welding and connecting rod (702) and spacing groove (7) inner wall connection, connecting rod (702) are close to accomodate groove (602) one end and are connected with installing frame (8) through the bolt.

7. An anti-reflux device as set forth in claim 1, wherein: the mounting frame (8) is in sliding contact with the inner wall of the storage groove (602), two ends of the third spring (801) are connected with the inner wall of the mounting frame (8) and the clamping block (802) through welding, the mounting frame (8) can extend into the cavity (6), and one end of the clamping block (802) away from the mounting frame (8) can be contacted with the sensing plate (601) through the third spring (801).