Circuit protection device for coal mine environment

Abstract

The utility model discloses a circuit protection device for a coal mine environment, which belongs to the field of circuit protection and comprises a mounting plate and a butt joint support connected to the top of the mounting plate, a butt joint cable connected to the top of the butt joint support, a protective shell connected to the top of the mounting plate, a butt joint component connected to the top of the mounting plate, and the protective shell covers the top of the butt joint component. The bottom of the mounting plate is connected with a branch cable, the branch cable is electrically connected with the butt joint support, and the branch cable is connected with an electromagnetic component. The first set of expert simulation analysis system which not only comprises a graphical setting system but also comprises existing setting configuration data in China is developed in combination with the actual power distribution condition of the You coal industry limited company; and the whole-network switch action condition after the short-circuit fault of the tail end of each feeder line can be analyzed. The method is of great significance to domestic coal mine system power distribution management, is of positive significance to power supply condition analysis of each production unit of a group of Yongzheng coal industry limited company, and has an important popularization prospect.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit protection technical field especially, it is a kind of circuit protection device for coal mine environment. BACKGROUND

[0002] The setting of coal mine power system is a work with higher technical requirements, generally, a coal enterprise usually only has 1 staff with the ability to set, which puts forward higher management requirements for the daily power system setting work of enterprise. Related technical personnel need to regularly study existing power supply system diagram and related power system design file, carefully check the setting value of newly added equipment, and obtain short-circuit current calculation data required by setting after strict mathematical calculation, and finally set analysis according to the data. Verification and equipment selection are also needed in the setting process, which also needs more professional personnel to calculate. It can be seen that the grid data creation input is more complicated, and the technical personnel is required higher.

[0003] At present, the setting method of mine power system theory is often based on the setting of ideal long line, and the sensitivity and protection range are easy to cooperate, and the cable is used in coal mine, and the cable distance is short, and the common reliability coefficient method is used for setting, and the problems of step tripping and sensitivity coefficient not meeting the requirements often occur. SUMMARY

[0004] The purpose of this section is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0005] The utility model aims at the technical problems in the background art, and proposes a kind of circuit protection device for coal mine environment, the utility model combines the actual power distribution situation of Youzhong Coal Co., Ltd., and develops the first set of domestic setting system containing graphic, also contains expert simulation analysis system based on existing setting configuration data, can analyze the whole network switch action after the short-circuit fault of each feeder end. It has very important significance to domestic coal mine system power distribution management, and also has positive significance to the power supply situation analysis of each production unit of Youzhong Coal Co., Ltd. Group, and has important popularization prospect.

[0006] The utility model provides a kind of circuit protection device for coal mine environment, including mounting plate and the top connection of which has docking support, docking support top is connected with docking cable, mounting plate top is connected with protective shell, mounting plate top is connected with docking component, protective shell cover is arranged on the top of docking component, mounting plate bottom is connected with branch cable, branch cable is electrically connected with the docking support, branch cable is connected with electromagnetic component.

[0007] By adopting the above technical scheme, the present application protects the circuit by electromagnetic change, and is more suitable for use in the internal environment of a mine tunnel than the traditional hot-melt type fuse protection circuit structure. The present application does not generate heat during protection, ensuring the safety and stability of the internal environment of the mine tunnel.

[0008] Preferably, the docking component includes a docking base connected to the top of the mounting plate, a cable is provided on the side of the docking base, the other end of the cable is electrically connected to the docking support, a conductive piece is connected to the top of the docking base, and an electrical connection plate is connected to the top of the conductive piece.

[0009] By adopting the above technical scheme, the present application can facilitate the docking of the device with external circuits through the combination of the docking base and the docking cable, and the protective shell can protect the detection structure of the device.

[0010] Preferably, two conductive pieces are connected to the top of the docking base, the heights of the two conductive pieces are different, and an electrical connection plate is connected to the top of each of the two conductive pieces and faces the center of the docking base, and there is a gap between the two electrical connection plates.

[0011] By adopting the above technical scheme, the present application can keep the circuit of the device in a conducting state when the conductive plate is located between the two electrical connection plates, and the circuit is disconnected when the conductive plate is deflected.

[0012] Preferably, a rotating shaft is rotatably connected to the mounting plate, a conductive plate is connected to the top of the rotating shaft, the conductive plate is arcuately slid between the two electrical connection plates and contacts the two electrical connection plates, a limiting support is connected to the top of the mounting plate, support columns are symmetrically arranged on the two sides of the conductive plate at the top of the limiting support, mirror-symmetric pressure sensors are provided on the top of the support columns, and the pressure sensors face the conductive plate.

[0013] By adopting the above technical scheme, the present application can trigger the sensor when the conductive plate is deflected, facilitating the maintenance of the staff.

[0014] Preferably, the electromagnetic component comprises a mounting base connected to the bottom of the mounting plate, the mounting base is electrically connected to the branch cable on the side, the bottom of the mounting base is provided with a mounting groove, the mounting groove is provided with a capacitor, and the side of the mounting base away from the branch cable is connected with a lead-through cable, and the other end of the lead-through cable is electrically connected with two electromagnets, and the electromagnets are connected to the mounting plate.

[0015] By adopting the technical scheme, the electromagnets can form an electromagnetic field environment, and the effect that the rotating shaft of the device is deflected is realized.

[0016] Preferably, the end of the rotating shaft away from the conductive plate is connected with an iron plate, the iron plate is located between the two electromagnets, the bottom of the mounting plate is connected with a spring support, the spring support is connected with a spring on the side, and the spring is connected to the side of the iron plate.

[0017] By adopting the technical scheme, the structure of the spring can realize the effect that the rotating shaft is automatically returned to rotate and the device is automatically reset.

[0018] In summary, the utility model has at least one of the following beneficial effects:

[0019] The device combines the actual power distribution situation of Youzhong Coal Industry Co., Ltd., develops a graphical setting system, can generate a scientific and detailed setting report by one key, can simulate and analyze fault reasons based on existing setting configuration data, and can analyze the whole network switch action condition after short-circuit fault of each feeder terminal. The development and application of the system have great significance for domestic coal mine system power distribution management and have important popularization prospect. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiment description, and obviously, the drawings in the following description are only some embodiments of the utility model, and for those skilled in the art, other drawings can be obtained according to the drawings without creative labor.

[0021] Fig. 1 It is the front view of the embodiment of the utility model circuit protection device for coal mine environment;

[0022] Fig. 2 It is the structural schematic view of the protective shell in the embodiment of the utility model;

[0023] Fig. 3 It is the structural schematic view of the electromagnetic component in the embodiment of the utility model;

[0024] Reference numerals: 1. Mounting plate; 2. Docking bracket; 3. Docking cable; 4. Protective housing; 5. Docking component; 501. Docking base; 502. Rotating shaft; 503. Limiting bracket; 504. Support column; 505. Press sensor; 506. Conductive component; 507. Electrical terminal plate; 508. Conductive plate; 6. Branch cable; 7. Electromagnetic component; 701. Mounting base; 702. Capacitor; 703. Mounting groove; 704. Electromagnet; 705. Iron plate; 706. Spring bracket; 707. Spring. Detailed Implementation

[0025] The following is in conjunction with the appendix Figs. 1-3 The present invention will be described in further detail below.

[0026] Example 1, as Figs. 1-3 As shown, in order to solve the existing problems, this utility model discloses a circuit protection device for coal mine environment, including a mounting plate 1 and a docking bracket 2 connected to its top. A docking cable 3 is connected to the top of the docking bracket 2. A protective shell 4 is connected to the top of the mounting plate 1. A docking component 5 is connected to the top of the mounting plate 1. The protective shell 4 covers the top of the docking component 5. A branch cable 6 is connected to the bottom of the mounting plate 1. The branch cable 6 is electrically connected to the docking bracket 2. An electromagnetic component 7 is connected to the branch cable 6.

[0027] The docking component 5 includes a docking base 501 connected to the top of the mounting plate 1. A cable is provided on the side of the docking base 501, and the other end of the cable is electrically connected to the docking bracket 2. A conductive element 506 is connected to the top of the docking base 501, and a junction plate 507 is connected to the top of the conductive element 506.

[0028] The docking base 501 has two conductive components 506 connected to its top. The two conductive components 506 are at different heights. The top of each of the two conductive components 506 is connected to a power receiving plate 507 facing the center of the docking base 501. There is a gap between the power receiving plates 507.

[0029] The mounting plate 1 is rotatably connected to a rotating shaft 502. A conductive plate 508 is connected to the top of the rotating shaft 502. The conductive plate 508 slides in an arc between two electrical receiving plates 507 and is in contact with the two electrical receiving plates 507. A limiting bracket 503 is connected to the top of the mounting plate 1. A support column 504 symmetrically distributed on both sides of the conductive plate 508 is connected to the top of the limiting bracket 503. A mirror-symmetrical pressing sensor 505 is provided on the top of the support column 504, and the pressing sensor 505 faces the conductive plate 508.

[0030] The specific working principle is as follows: This device can automatically disconnect when the external circuit fluctuates. Compared with traditional devices, this device avoids the use of fuses, so it will not generate high temperature during actual use, making it safe to use inside the mine. At the same time, this device avoids the use of disposable fuses, making it easy to reset.

[0031] When this device is in use, it is connected to an external circuit via the docking cable 3, thereby installing the device in the existing external circuit. At this time, the external circuit enters the device through the docking cable 3. When the external circuit is stable, the capacitor 702 maintains the same internal voltage as the external circuit voltage after a short charging. At this time, the mounting base 701 is in an open circuit state. At this time, there is no current or electromagnetic field environment in the electromagnet 704. At this time, the rotating shaft 502 and the iron plate 705 are located at the center of the electromagnet 704 under the pull of the spring 707. At this time, the conductive plate 508 on the other side is in contact with the upper and lower connecting plates 507, ensuring the current conduction effect of this device.

[0032] When the external circuit changes, a difference is generated between the internal voltage of capacitor 702 and the external circuit. At this time, capacitor 702 generates a charging or discharging effect, which generates current. This causes current to be generated inside electromagnet 704, which in turn generates an electromagnetic field. At this time, iron plate 705 deflects, which causes conductive plate 508 at the other end of shaft 502 to deflect. This causes the contact between conductive plate 508 and the grounding plate 507 to be interrupted, resulting in the circuit being disconnected.

[0033] This device does not consume electrical energy during the detection process and uses electromagnetic deflection effect, avoiding the use of high-temperature one-time fuse devices.

[0034] Example 2, as Figs. 1-3 As shown, in order to solve the existing problems in this embodiment, based on the same concept as the above embodiment one, the circuit protection device for coal mine environment further includes: the electromagnetic component 7 includes a mounting base 701 connected to the bottom of the mounting plate 1, the side of the mounting base 701 is electrically connected to the branch cable 6, the bottom of the mounting base 701 is provided with a mounting groove 703, the mounting groove 703 is provided with a capacitor 702, a conductive cable is connected to the side of the mounting base 701 away from the branch cable 6, and the other end of the conductive cable is electrically connected to two electromagnets 704, the electromagnets 704 are connected to the mounting plate 1.

[0035] The end of the rotating shaft 502 away from the conductive plate 508 is connected to an iron plate 705, which is located between two electromagnets 704. The bottom of the mounting plate 1 is connected to a spring bracket 706, and a spring 707 is connected to the side of the spring bracket 706. The spring 707 is connected to the side of the iron plate 705.

[0036] The specific working principle is that the device can effectively improve the accurate control of the electromagnet 704, the capacitor 702 structure can ensure that the electromagnetic circuit is in the open state during the normal circuit use process, and then the electromagnetic field can be generated when the external circuit changes, thereby realizing the timeliness of the device circuit protection.

[0037] The above are preferred embodiments of the present application, and are not intended to limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A circuit protection device for coal mine environment, comprising a mounting plate (1) and a docking support (2) connected to the top of the mounting plate, characterized in that, The docking bracket (2) is connected to the top of the docking cable (3), the mounting plate (1) is connected to the top of the protective shell (4), the mounting plate (1) is connected to the top of the docking component (5), the protective shell (4) covers the top of the docking component (5), the mounting plate (1) is connected to the bottom of the branch cable (6), the branch cable (6) is electrically connected to the docking bracket (2), and the branch cable (6) is connected to the electromagnetic component (7).

2. A circuit protection device for use in a coal mine environment according to claim 1, characterised in that, The docking component (5) includes a docking base (501) connected to the top of the mounting plate (1). A cable is provided on the side of the docking base (501), and the other end of the cable is electrically connected to the docking bracket (2). A conductive element (506) is connected to the top of the docking base (501), and a junction plate (507) is connected to the top of the conductive element (506).

3. A circuit protection device for use in a coal mine environment according to claim 2, characterised in that, The docking base (501) has two conductive components (506) connected to its top. The two conductive components (506) are at different heights. The top of each of the two conductive components (506) is connected to a power receiving plate (507) facing the center of the docking base (501). There is a gap between the power receiving plates (507).

4. A circuit protection device for use in a coal mine environment according to claim 3, characterised in that, The mounting plate (1) is rotatably connected to a rotating shaft (502), and a conductive plate (508) is connected to the top of the rotating shaft (502). The conductive plate (508) slides in an arc between two electrical receiving plates (507), and the conductive plate (508) contacts the two electrical receiving plates (507). A limiting bracket (503) is connected to the top of the mounting plate (1), and a support column (504) symmetrically distributed on both sides of the conductive plate (508) is connected to the top of the limiting bracket (503). A mirror-symmetrical pressing sensor (505) is provided on the top of the support column (504), and the pressing sensor (505) faces the conductive plate (508).

5. A circuit protection device for use in a coal mine environment according to claim 4, characterised in that, The electromagnetic component (7) includes a mounting base (701) connected to the bottom of the mounting plate (1). The side of the mounting base (701) is electrically connected to the branch cable (6). The bottom of the mounting base (701) is provided with a mounting groove (703). The mounting groove (703) is provided with a capacitor (702). A conductive cable is connected to the side of the mounting base (701) away from the branch cable (6). The other end of the conductive cable is electrically connected to two electromagnets (704). The electromagnets (704) are connected to the mounting plate (1).

6. A circuit protection device for use in a coal mine environment according to claim 5, characterised in that, The end of the rotating shaft (502) away from the conductive plate (508) is connected to an iron plate (705). The iron plate (705) is located between two electromagnets (704). The bottom of the mounting plate (1) is connected to a spring bracket (706). A spring (707) is connected to the side of the spring bracket (706). The spring (707) is connected to the side of the iron plate (705).

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