阅读说明：本技术 一种矿用隔爆兼本质安全型配电装置和联络配电装置 (Mining explosion-proof and intrinsically safe power distribution device and interconnection power distribution device ) 是由 石晓军 张志华 井兴虎 于 2021-02-26 设计创作，主要内容包括：本发明公开了一种矿用隔爆兼本质安全型配电装置和联络配电装置,母线箱内设置有两个与外界连通的进线穿墙连接组件和一个内壁穿墙连接组件,内壁穿墙连接组件分别连接至两个进线穿墙连接组件,内壁穿墙连接组件将母线箱和隔离刀闸箱连通；快速开关箱内设置有快速开关和取能电压互感器,快速开关包括灭弧室、电流互感器、电压互感器和分合闸操作机构；保护器箱内设置有保护器和液晶显示器,保护器与液晶显示器连接,保护器箱外壁上设置有保护器的操作按钮,保护器分别与快速开关和取能电压互感器采用航空电缆连接；隔离刀闸箱内设置有隔离刀闸,隔离刀闸一侧连接内壁穿墙连接组件,另一侧连接快速开关进线侧和取能电压互感器。(The invention discloses a mining explosion-proof and intrinsically safe power distribution device and a communication power distribution device.A bus box is internally provided with two incoming line wall-penetrating connecting assemblies communicated with the outside and an inner wall-penetrating connecting assembly, the inner wall-penetrating connecting assemblies are respectively connected to the two incoming line wall-penetrating connecting assemblies, and the bus box is communicated with an isolation switch box by the inner wall-penetrating connecting assemblies; the quick switch box is internally provided with a quick switch and an energy-taking voltage transformer, and the quick switch comprises an arc extinguish chamber, a current transformer, a voltage transformer and a switching-on and switching-off operating mechanism; the protector box is internally provided with a protector and a liquid crystal display, the protector is connected with the liquid crystal display, the outer wall of the protector box is provided with an operating button of the protector, and the protector is respectively connected with the quick switch and the energy-taking voltage transformer by aviation cables; an isolation switch is arranged in the isolation switch box, one side of the isolation switch is connected with the inner wall through-wall connecting component, and the other side of the isolation switch is connected with the fast switch incoming line side and the energy-taking voltage transformer.)

1. A mining explosion-proof and intrinsically safe power distribution device is characterized by comprising an isolation knife switch box (1), a bus box (2), a protector box (3) and a quick switch box (4), which are mutually independent and sealed;

two incoming line wall-penetrating connecting assemblies and an inner wall-penetrating connecting assembly (10) which are communicated with the outside are arranged in the busbar box (2), the inner wall-penetrating connecting assemblies (10) are respectively connected to the two incoming line wall-penetrating connecting assemblies, and the busbar box (2) is communicated with the isolation knife switch box (1) through the inner wall-penetrating connecting assemblies (10);

a quick switch (7) and an energy-taking voltage transformer (8) are arranged in the quick switch box (4), and the quick switch (7) comprises an arc extinguish chamber, a current transformer, a voltage transformer and a switching-on and switching-off operating mechanism;

a protector (6) and a liquid crystal display are arranged in the protector box (3), the protector (6) is connected with the liquid crystal display, an operating button (12) of the protector (6) is arranged on the outer wall of the protector box (3), and the protector (6) is respectively connected with the quick switch (7) and the energy-taking voltage transformer (8) through aviation cables;

an isolation switch (5) is arranged in the isolation switch box (1), one side of the isolation switch (5) is connected with an inner wall through-wall connecting component (10), and the other side of the isolation switch (5) is connected with a line inlet side of a quick switch (7) and an energy-taking voltage transformer (8).

2. The mining flameproof and intrinsically safe power distribution device according to claim 1, wherein the current transformer is an electronic current transformer, and the voltage transformer is an electronic voltage transformer.

3. The mining flameproof and intrinsically safe power distribution device according to claim 1, wherein the quick switch (7) comprises an insulating pole, the arc extinguish chamber, the current transformer and the voltage transformer are fixedly sealed in the insulating pole by epoxy resin, and the opening and closing operation mechanism is arranged on the lower side of the insulating pole.

4. The mining flameproof and intrinsically safe power distribution device according to claim 1, wherein a high-voltage cable connector (9) is arranged on the quick switch box (4), and the outgoing side of the quick switch (7) is connected with the high-voltage cable connector (9).

5. The mining flameproof and intrinsically safe power distribution device according to claim 1, wherein the isolation knife switch box (1), the bus-bar box (2), the protector box (3) and the quick switch box (4) are all provided with openings, and cover plates (13) are fixedly connected to the openings.

6. The mining flameproof and intrinsically safe power distribution device according to claim 5, wherein the protector box (3), the quick switch box (4) and the isolation knife switch box (1) are all provided with observation windows (11).

7. The mining flameproof and intrinsically safe power distribution device according to claim 1, wherein nitrogen or air is filled in the isolation knife switch box (1), the bus box (2), the protector box (3) and the quick switch box (4).

8. The mining flameproof and intrinsically safe power distribution device according to claim 1, wherein an operating handle (14) is arranged on the outer wall of the isolation switch box (1), the operating handle (14) is connected with the isolation switch (5), a manual rotating wheel (15) is arranged on the outer wall of the quick switch box (4), and the manual rotating wheel (15) is connected with a switching-on and switching-off operating mechanism.

9. The mining flameproof and intrinsically safe power distribution device according to claim 8, wherein a base is arranged on the operating handle (14), the base is a concave wheel, the manual rotating wheel (15) is a cam, and the base is meshed with the manual rotating wheel (15) to form an interlocking structure.

10. A mining explosion-proof and intrinsically safe interconnection power distribution device is characterized by comprising an isolation knife switch box (1), a bus box (2), a protector box (3) and a quick switch box (4), which are mutually independent and sealed;

two incoming line wall-penetrating connecting assemblies communicated with the outside, an outgoing line wall-penetrating connecting assembly communicated with the outside, an inner wall-penetrating connecting assembly (10) and a cavity bottom wall-penetrating connecting assembly (16) are arranged in the bus box (2), the inner wall-penetrating connecting assembly (10) is connected to the incoming line wall-penetrating connecting assemblies, the bus box (2) is communicated with the isolation switch box (1) through the inner wall-penetrating connecting assembly (10), one end of the cavity bottom wall-penetrating connecting assembly (16) is connected with an outgoing line end of the quick switch (7), and the other end of the cavity bottom wall-penetrating connecting assembly is connected;

a quick switch (7) and an energy-taking voltage transformer (8) are arranged in the quick switch box (4), and the quick switch (7) comprises an arc extinguish chamber, a current transformer, a voltage transformer and a switch;

a protector (6) and a liquid crystal display are arranged in the protector box (3), the protector (6) is connected with the liquid crystal display, an operating button (12) of the protector (6) is arranged on the outer wall of the protector box (3), and the protector (6) is respectively connected with the quick switch (7) and the energy-taking voltage transformer (8) through aviation cables;

an isolation switch (5) is arranged in the isolation switch box (1), one side of the isolation switch (5) is connected with an inner wall through-wall connecting component (10), and the other side of the isolation switch (5) is connected with a line inlet side of a quick switch (7) and an energy-taking voltage transformer (8).

Technical Field

The invention belongs to the field of mining power distribution, and relates to a mining explosion-proof and intrinsically safe power distribution device and a connecting power distribution device.

Background

The existing underground coal mine power distribution device comprises a mine explosion-proof power distribution device and a mine explosion-proof feed switch, wherein the mine explosion-proof power distribution device comprises an explosion-proof cavity, a voltage transformer, a tube-through current transformer, a trolley type permanent magnet mechanism breaker, a comprehensive protector, a cabinet door, a mechanical lock, a wire inlet and outlet bell mouth, a wire outlet cavity, an operation button, a protective liquid crystal display and the like.

The existing voltage transformer, current transformer and permanent magnet mechanism operation loops are connected to the comprehensive protector through secondary wires, hard wires are adopted for connection, the failure rate and maintenance amount of a secondary system are high, and the existing operation buttons are operated in a pressing mode, so that dust and moisture easily enter the explosion-proof cavity in the long-term operation process, and the explosion-proof cavity is easily affected with damp or heated.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a mining explosion-proof and intrinsically safe power distribution device and a connection power distribution device, so that the reliability of a secondary system is improved, and the failure rate and the maintenance quantity of the primary and secondary systems are greatly reduced.

In order to achieve the purpose, the invention adopts the following technical scheme to realize the purpose:

a mining flame-proof and intrinsically safe power distribution device comprises an isolation knife switch box, a bus box, a protector box and a quick switch box which are mutually independent and sealed;

two incoming line wall-penetrating connecting assemblies communicated with the outside and an inner wall-penetrating connecting assembly are arranged in the busbar box, the inner wall-penetrating connecting assemblies are respectively connected to the two incoming line wall-penetrating connecting assemblies, and the busbar box is communicated with the isolation switch box through the inner wall-penetrating connecting assemblies;

the quick switch box is internally provided with a quick switch and an energy-taking voltage transformer, and the quick switch comprises an arc extinguish chamber, a current transformer, a voltage transformer and a switching-on and switching-off operating mechanism;

the protector box is internally provided with a protector and a liquid crystal display, the protector is connected with the liquid crystal display, the outer wall of the protector box is provided with an operating button of the protector, and the protector is respectively connected with the quick switch and the energy-taking voltage transformer by aviation cables;

an isolation switch is arranged in the isolation switch box, one side of the isolation switch is connected with the inner wall through-wall connecting component, and the other side of the isolation switch is connected with the fast switch incoming line side and the energy-taking voltage transformer.

Preferably, the current transformer is an electronic current transformer, and the voltage transformer is an electronic voltage transformer.

Preferably, the quick switch comprises an insulating pole, the arc extinguish chamber, the current transformer and the voltage transformer are fixedly sealed in the insulating pole by epoxy resin, and the opening and closing operation mechanism is arranged on the lower side of the insulating pole.

Preferably, a high-voltage cable connector is arranged on the quick switch box, and the outlet side of the quick switch is connected with the high-voltage cable connector.

Preferably, keep apart knife switch case, generating line case, protector case and quick-operation switch case and all be provided with the opening, the equal fixedly connected with apron of opening part.

Furthermore, all be provided with the observation window on protector case, the quick switch case and the isolation knife switch case.

Preferably, the isolation knife switch box, the bus box, the protector box and the quick switch box are all filled with nitrogen or air.

Preferably, an operating handle is arranged on the outer wall of the isolation switch box and connected with the isolation switch, a manual rotating wheel is arranged on the outer wall of the quick switch box and connected with the opening and closing operation mechanism.

Furthermore, a base is arranged on the operating handle, the base is a concave wheel, the manual rotating wheel is a cam, and the base is meshed with the manual rotating wheel to form an interlocking structure.

A mining explosion-proof and intrinsically safe interconnection power distribution device comprises an isolation knife switch box, a bus box, a protector box and a quick switch box which are mutually independent and sealed;

the bus box is internally provided with two incoming line wall-penetrating connecting assemblies communicated with the outside, an outgoing line wall-penetrating connecting assembly communicated with the outside, an inner wall-penetrating connecting assembly and a cavity bottom wall-penetrating connecting assembly, the inner wall-penetrating connecting assembly is connected to the incoming line wall-penetrating connecting assemblies, the inner wall-penetrating connecting assembly is communicated with the bus box and the isolation switch box, one end of the cavity bottom wall-penetrating connecting assembly is connected with a fast switch outgoing line end, and the other end of the cavity bottom wall-penetrating connecting assembly is connected;

a quick switch and an energy-taking voltage transformer are arranged in the quick switch box, and the quick switch comprises an arc extinguish chamber, a current transformer, a voltage transformer and a switch;

the protector box is internally provided with a protector and a liquid crystal display, the protector is connected with the liquid crystal display, the outer wall of the protector box is provided with an operating button of the protector, and the protector is respectively connected with the quick switch and the energy-taking voltage transformer by aviation cables;

an isolation switch is arranged in the isolation switch box, one side of the isolation switch is connected with the inner wall through-wall connecting component, and the other side of the isolation switch is connected with the fast switch incoming line side and the energy-taking voltage transformer.

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

the box bodies of the invention are all sealed box bodies, which prevents dirt, dust and moisture from entering the box bodies, and the independent protector box is arranged, thereby realizing the reliable isolation of the protector, the liquid crystal display and the operating button from the primary system, improving the tightness of the primary system equipment and avoiding the primary system from being affected with damp or entering dust. The secondary systems among the energy-taking voltage transformer, the quick switch and the protector are all connected through an aviation plug and are not connected through a hard wire, so that the reliability of the secondary system is improved, the failure rate and the maintenance amount of the primary and secondary systems are greatly reduced, the whole structure is compact, and the device has strong maintenance-free performance.

Furthermore, an electronic current-voltage transformer is adopted, the protector is matched with the electronic transformer, a measurement A/D conversion module and a sampling part in the protector are saved, the size of the protector is smaller, a primary side transient process can be accurately reflected, and the measurement precision and the protection action accuracy of the electric quantity are improved.

Further, the arc chamber and the electronic current-voltage transformer are fixedly sealed in the insulating pole, so that the installation space is saved, the hard wire connection is reduced, and the failure rate of a secondary circuit is reduced.

Furthermore, the high-voltage cable connector is adopted, so that the phenomenon that after the high-voltage cable needs to be manually pressed on the wiring terminal due to the adoption of the wiring terminal and is frequently operated for a period of time, the high-voltage cable is heated and oxidized or even burnt and exploded due to poor electrical operation process is avoided.

Furthermore, the box body is not provided with a box door, and the cover plate is fixed with the opening of the box body, so that the phenomenon that the switch is affected with damp, dust and other artificial faults due to the fact that the power distribution device is opened manually is avoided.

Furthermore, the observation window is convenient for observing the display content of the liquid crystal display, the rapid switch on-off position indication and the on-off state and the running state of the isolation disconnecting link.

Furthermore, nitrogen or air is adopted as an insulating medium in the box body, so that dirt, dust and moisture are prevented from entering the box body, and the high reliability of a primary loop is ensured.

Drawings

FIG. 1 is a right side sectional view of a power distribution apparatus of the present invention;

FIG. 2 is a front view of the power distribution apparatus of the present invention;

FIG. 3 is a right side view of the power distribution apparatus of the present invention;

FIG. 4 is a right side elevation view of the tie distribution unit of the present invention;

fig. 5 is a right side view of the tie distribution unit of the present invention.

Wherein: 1-isolating a knife switch box; 2-a bus-bar box; 3-a protector box; 4-fast switch box; 5, isolating a knife switch; 6-a protector; 7-fast switch; 8-energy-taking voltage transformer; 9-high voltage cable connectors; 10-an inner wall through-wall connection assembly; 11-a viewing window; 12-an operating button; 13-a cover plate; 14-operating a handle; 15-manual turning wheel; 16-chamber bottom through-wall connection assembly.

Detailed Description

The invention is described in further detail below with reference to the accompanying drawings:

as shown in figure 1, the mining explosion-proof and intrinsically safe power distribution device is an explosion-proof box body integrally and comprises an isolation knife switch box 1, a bus box 2, a protector box 3 and a quick switch box 4 which are mutually independent and sealed.

Isolation knife switch box 1 is located flame proof box front end top position, and generating line case 2 is located isolation knife switch box 1 rear, and protector case 3 is located flame proof box front end below position, and quick switch box 4 is located protector case 3 rear.

Two incoming line wall-penetrating connecting assemblies communicated with the outside are arranged on the side wall of the bus box 2 and are respectively connected with a high-voltage bus copper bar or a cable outside the explosion-proof box body, an inner wall-penetrating connecting assembly 10 is arranged on the inner wall of the high-voltage bus box 2, and the bus box 2 is communicated with the isolation knife switch box 1 through the inner wall-penetrating connecting assembly 10; the inner wall through-wall connecting assembly 10 is connected with the isolation switch 5, and the inner wall through-wall connecting assembly 10 in the bus box 2 is respectively connected to the two inlet wire through-wall connecting assemblies through single-phase high-voltage cables.

And a high-voltage cable connector 9 is arranged on the outer wall of the quick switch box 4 and is connected with a high-voltage cable on the load side.

Isolation switch box 1 is provided with isolation switch 5, and isolation switch 5 one side is connected in inner wall through-wall coupling assembling 10, and the opposite side is connected to fast switch 7 incoming line side through flat copper to be connected to through three single-phase cable and get ability voltage transformer 8.

Be provided with fast switch 7 and get in the fast switch case 4 and can voltage transformer 8, fast switch 7 outgoing line side is connected to high tension cable connector 9 of being qualified for the next round of competitions through three single-phase high tension cables, and fast switch 7 is connected with the control aviation cable plug, is connected to protector 6 through the aviation cable.

Be provided with protector 6 and LCD in the protector case 3, protector 6 is connected through inserting the extension cord with LCD, and 6 power of protector are got from getting and can 8 secondary sides of voltage transformer through the circular connector, are provided with the operating button 12 of protector 6 on the 3 outer walls of protector case.

The fast switch 7 comprises an arc extinguish chamber, a current transformer, a voltage transformer and a switching-on and switching-off operating mechanism; the fast switch 7 adopts a secondary system fusion technology, an arc extinguish chamber, an electronic current transformer and an electronic voltage transformer are fixedly sealed in an insulating pole column together by epoxy resin, and a switching-on and switching-off operating mechanism is arranged on the lower side of the insulating pole column. The quick switch 7 is composed of a three-phase solid-sealed polar pole and a full-sealed operating mechanism box body, an electronic current transformer and a voltage transformer are sealed in the three-phase polar pole, a switching-on and switching-off indicator is arranged on a shell on the front face of the operating mechanism box body, a stud at a wire inlet end is positioned at the top of the solid-sealed polar pole, and a stud at a wire outlet end is positioned in the middle of the solid-sealed polar pole and faces the back face of the. The operating mechanism is made of memory alloy materials, so that the quick switch 7 is small in switching-on current, low in power consumption, zero in switching-on bounce and less than 10ms in switching-off time, multistage grade difference can be realized, the short-circuit fault and the grounding fault can be reliably isolated by matching with the outgoing line protection time of a transformer substation, and override tripping is avoided.

The front end of the explosion-proof box body is not provided with a box door, an observation window 11 with upper and lower explosion-proof glass is arranged on a cover plate 13 at the front end of the explosion-proof box body, the upper observation window 11 is used for observing a liquid crystal display of the protector 6, and the lower observation window 11 is used for observing the opening and closing position indication of the quick switch 7; the cover plate 13 at the front end of the box body is fixed and locked by a plurality of high-strength fastening screws; the front end cover plate 13 of the box body is provided with switching-off, switching-on, upward moving, downward moving, confirming and resetting buttons which are used for switching-off and switching-on control and setting fixed values of the protector 6.

The side wall of the isolation switch box 1 is provided with an observation window 11 made of explosion-proof glass and used for observing the switching-on and switching-off state and the running state of the isolation switch 5.

The power distribution device can simultaneously carry out switching-on and switching-off control and fixed value setting operation of the protector 6 through a wireless remote controller; an operating handle 14 for opening and closing the isolation switch 5 and a manual rotating wheel 15 for opening and closing the quick switch 7 are arranged on one side of the flameproof box body, the operating handle 14 is connected with the isolation switch 5, and the manual rotating wheel 15 is connected with an opening and closing operation mechanism; the operating handle 14 and the manual rotating wheel 15 are locked with each other, the base of the operating handle 14 is a concave wheel, the manual rotating wheel 15 is a cam, after the manual rotating wheel 15 is pulled out and rotated, the quick switch 7 is opened manually or the opening state of the quick switch 7 is confirmed, and the operating handle 14 can be opened and closed.

The embodiment also provides a mining explosion-proof and intrinsically safe interconnection power distribution device, which is different from the mining explosion-proof and intrinsically safe power distribution device in that: be provided with two inlet wire wall-penetrating connection subassemblies that communicate with the external world in the generating line case 2, the wall-penetrating connection subassembly that is qualified for the next round of competitions with the external world intercommunication, an inner wall-penetrating connection subassembly 10 and the wall-penetrating connection subassembly 16 at the bottom of the chamber, inner wall-penetrating connection subassembly 10 is connected to inlet wire wall-penetrating connection subassembly, inner wall-penetrating connection subassembly 10 is with generating line case 2 and isolation knife switch case 1 intercommunication, 16 one end of wall-penetrating connection subassembly and the quick-operation switch 7 leading-out terminal connection are worn to. No high voltage cable connector 9 is provided.

The above-mentioned contents are only for illustrating the technical idea of the present invention, and the protection scope of the present invention is not limited thereby, and any modification made on the basis of the technical idea of the present invention falls within the protection scope of the claims of the present invention.