阅读说明：本技术 矿用隔爆兼本质安全型双电源双回路照明综合保护装置 (Mining explosion-proof and intrinsically safe dual-power dual-loop illumination comprehensive protection device ) 是由 尹良贵 魏衍栋 张如清 李晓华 孔德全 罗永顺 代卫卫 郭伟柱 陈建荣 杨仲如 于 2019-10-09 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双电源双回路照明综合保护装置,包括支撑底托,所述支撑底托的上表面从前到后依次固定安装有前腔箱体与后腔箱体,所述前腔箱体与后腔箱体左右两侧之间的位置均固定安装有两个竖直方向放置的接线柱过线通道,所述前腔箱体与后腔箱体的上表面固定安装有线箱,所述线箱的上表面固定安装有线箱盖板；所述后腔箱体的后表面铰接有后封板,所述后腔箱体的底端内壁固定安装有两个平行放置的导轨支架。本发明中,通过设置的闭锁轴与旋钮上的U槽配合使用,实现快开门结构,能够保护了内部本体、人员操作安全及实现快开门,还能够实现断电闭锁,通过采用双电源双回路,能够实现漏电闭锁及在线漏电保护。(The invention discloses a mining explosion-proof and intrinsically safe dual-power-supply dual-loop illumination comprehensive protection device which comprises a support collet, wherein a front cavity box body and a rear cavity box body are fixedly installed on the upper surface of the support collet from front to back in sequence, two wiring terminal wire passing channels which are vertically arranged are fixedly installed at positions between the left side and the right side of the front cavity box body and the rear cavity box body, wire boxes are fixedly installed on the upper surfaces of the front cavity box body and the rear cavity box body, and wire box cover plates are fixedly installed on the upper surfaces of the wire boxes; the rear surface of back chamber box articulates there is the back shrouding, the bottom inner wall fixed mounting of back chamber box has two parallel guide rail support of placing. According to the invention, the locking shaft is matched with the U-shaped groove on the knob for use, so that a quick door opening structure is realized, the internal body and the personnel operation safety can be protected, the quick door opening can be realized, the power-off locking can also be realized, and the electric leakage locking and the online electric leakage protection can be realized by adopting a double-power-supply loop.)

1. The mining flame-proof and intrinsically safe dual-power double-loop illumination comprehensive protection device is characterized by comprising a support base (6), wherein a front cavity box body (5) and a rear cavity box body (4) are fixedly installed on the upper surface of the support base (6) from front to back in sequence, two wiring terminal wiring channels (7) which are vertically arranged are fixedly installed at positions between the left side and the right side of the front cavity box body (5) and the rear cavity box body (4), a wire box (2) is fixedly installed on the upper surfaces of the front cavity box body (5) and the rear cavity box body (4), and a wire box cover plate (1) is fixedly installed on the upper surface of the wire box (2);

the rear surface of the rear cavity box body (4) is hinged with a rear sealing plate (3), two guide rail brackets (25) which are arranged in parallel are fixedly installed on the inner wall of the bottom end of the rear cavity box body (4), and a dry-type transformer (34) is fixedly installed on the upper surfaces of the two guide rail brackets (25);

the front surface of the front cavity box body (5) is sequentially and fixedly provided with a left door flange (13) and a right door flange (14) from left to right, the side surfaces of the left door flange (13) and the right door flange (14) far away from the center of the front cavity box body (5) are respectively and fixedly provided with a door closing groove (21), the front surfaces of the left door flange (13) and the right door flange (14) are respectively and movably provided with a door plate (11), the other side surface of the door plate (11) is close to the upper end and the lower end and is respectively and fixedly provided with a door seat (20), a door rotating shaft (19) is fixedly arranged between the two door seats (20), the arc side surface of the door rotating shaft (19) is sleeved with a handle (24) with a connecting sleeve, a moving seat (22) is spliced on one side surface of the door seat (20), the left side surface and the right side surface of the front cavity box body (5) are respectively and fixedly provided with a, a locking shaft support (16) is fixedly mounted below the left side surface and the right side surface of the front cavity box body (5) close to the upper hinge seat (23), a locking shaft (15) penetrates through the front surface of the locking shaft support (16), knobs (18) are rotatably mounted behind the left side surface and the right side surface of the front cavity box body (5) close to the locking shaft support (16), U-shaped grooves (17) are formed in the arc-shaped side surfaces of the knobs (18), a shifting shaft (44) is fixedly mounted on the surface of one side of each knob (18), shifting wheels (43) are fixedly mounted on the arc-shaped side surfaces of the shifting shaft (44), and stop buttons (42) are arranged at the lower ends of the left side surface and the right side surface of the front cavity box body (5) close to the knobs;

the structure of the front cavity type transformer is characterized in that a front cavity middle partition plate (38) used for dividing the interior of the front cavity box body (5) into a left cavity and a right cavity is fixedly installed in the middle of the interior of the front cavity box body (5), the inner structures of the left cavity and the right cavity of the front cavity box body (5) are the same, a cavity core plate (26) is fixedly installed on the inner wall of the rear end of the right cavity of the front cavity box body (5), a transformer support (37) is fixedly installed on the upper surface of the cavity core plate (26), a current transformer (36) is fixedly installed on the lower surface of the transformer support (37), two alternating current vacuum contactors (27), a three-phase reactor (40) and a control transformer (31) are fixedly installed on the front surface of the cavity core plate (26), the two alternating current vacuum contactors (27) are distributed along one diagonal line of the cavity core plate (26), and the three-phase reactors, the side inner wall fixed mounting that the right side chamber of antechamber box (5) is close to the edge has combination switch fixed plate (32), the fixed position that the left surface of combination switch fixed plate (32) is close to the rear end installs porcelain safety support (41), the preceding fixed surface of porcelain safety support (41) installs porcelain safety (33), the fixed position that the left surface of combination switch fixed plate (32) is close to the middle part installs combination switch (35), the back fixed surface of door plant (11) installs door core board (28), the back surface of door core board (28) from left to right in proper order fixed mounting have leakage filter module (39) and guide's plug-in components (29), the top fixed mounting that the back surface of door plant (11) is close to door core board (28) has protector (30).

2. The mining flameproof and intrinsically safe dual-power-supply dual-loop illumination comprehensive protection device of claim 1, characterized in that the internal structures of the left cavity and the right cavity of the front cavity box body (5) are placed in a horizontal mirror image mode with a front cavity middle partition plate (38) as a midpoint.

3. The mining flameproof and intrinsically safe dual-power-supply dual-loop illumination comprehensive protection device according to claim 1, characterized in that a current transformer (36), an alternating current vacuum contactor (27), a three-phase reactor (40), a control transformer (31), a porcelain fuse (33), a combination switch (35), a leakage filter module (39), a pilot plug-in (29), a protector (30) and a dry-type transformer (34) in a left cavity and a right cavity form a first loop circuit and a second loop circuit, the protector (30), the leakage filter module (39) and the three-phase reactor (40) are electrically connected with the current transformer (36) after being connected in series, the current transformer (36) is electrically connected with the dry-type transformer (34) after being connected in series with the alternating current vacuum contactor (27), the combination switch (35) is electrically connected with the alternating current vacuum contactor (27) after being connected in series with the porcelain fuse (33), the pilot plug-in (29) is connected in series with the protector (30).

4. The mining flameproof and intrinsically safe dual-power-supply dual-loop illumination comprehensive protection device of claim 1, which is characterized in that the movable seat (22) is movably connected with the hinge seat (23) by a pin shaft.

5. The mining flameproof and intrinsically safe dual-power-supply dual-loop illumination comprehensive protection device of claim 1, wherein the locking shaft (15) corresponds to an upper U groove (17) of a knob (18), and the knob (18) is fixed with a combination switch (35) through a shifting shaft (44).

6. The mining explosion-proof and intrinsically safe dual-power-supply dual-loop illumination comprehensive protection device of claim 1, characterized in that the positions of the lower surfaces of the left door flange (13) and the right door flange (14) adjacent to each other are fixedly provided with door supporting plates (8), and the positions of the lower surfaces of the left door flange (13) and the right door flange (14) close to the edges are provided with clamping blocks (9) and outer fixing blocks (10).

Technical Field

The invention relates to the technical field of mine lighting devices, in particular to a mining explosion-proof and intrinsically safe dual-power-supply dual-loop lighting comprehensive protection device.

Background

The mining explosion-proof type illumination comprehensive protection switch is widely applied to underground coal mines, the illumination signal comprehensive protection device is suitable for underground coal mines containing coal dust and explosive gases, a power supply of 127V-grade illumination signal equipment is controlled, and the power supply is introduced to 50Hz, 1140V or 660V. The common comprehensive lighting protection transformer is divided into 4KVA, 6KVA, 10KVA, 12.5KVA, 16KVA and the like according to the capacity of the lighting comprehensive protection transformer, the lighting device has the functions of local manual control and automatic power transmission, free selection and use of a common lamp and a sodium lamp, the starting current of the sodium lamp can be kept away, and the terminal protection device can realize the function of long-distance short circuit protection. The long-distance short circuit protection is realized, the signal sampling does not depend on current and is not related to the length of a cable, and the length of the cable can be arbitrarily prolonged within the allowable voltage drop protection distance. And the existing coal mines are all single-loop lighting, part of few coal mines also have double-loop lighting, the single-loop and double-loop lighting are all single power supplies, and once the upper level fails, the switch trips, and the lighting comprehensive protection can immediately cut off power.

As the 127V power supply of the monitoring equipment in the underground coal mine substation mainly comes from a switch or lighting signal comprehensive protection, when a single power supply device has power failure or faults, the power supply of the monitoring equipment cannot work normally without a power supply.

Disclosure of Invention

In order to overcome the technical problems, the invention aims to provide a mining explosion-proof and intrinsically safe dual-power-supply dual-loop lighting comprehensive protection device, a quick-opening door structure is realized by matching a locking shaft with a U-shaped groove on a knob, an inner body and personnel operation safety can be protected, quick opening of a door can be realized, power-off locking can also be realized, and leakage locking and online leakage protection can be realized by adopting a dual-power-supply dual-loop.

The purpose of the invention can be realized by the following technical scheme:

a mining flame-proof and intrinsically safe dual-power dual-loop lighting comprehensive protection device comprises a support collet, wherein a front cavity box body and a rear cavity box body are fixedly installed on the upper surface of the support collet from front to back in sequence, two wiring terminal wire passing channels which are vertically arranged are fixedly installed at positions between the left side and the right side of the front cavity box body and the right side of the rear cavity box body, wire boxes are fixedly installed on the upper surfaces of the front cavity box body and the rear cavity box body, and wire box cover plates are fixedly installed on the upper surfaces of the wire boxes;

the rear surface of the rear cavity box body is hinged with a rear sealing plate, the inner wall of the bottom end of the rear cavity box body is fixedly provided with two guide rail supports which are arranged in parallel, and the upper surfaces of the two guide rail supports are fixedly provided with a dry-type transformer;

a left door flange and a right door flange are fixedly installed on the front surface of the front cavity box body from left to right in sequence, door closing grooves are fixedly installed on the side surfaces, far away from the center of the front cavity box body, of the left door flange and the right door flange, door plates are movably installed on the front surfaces of the left door flange and the right door flange, door seats are fixedly installed at the positions, close to the upper end and the lower end, of the other side surface of each door plate, a door rotating shaft is fixedly installed at the position between the two door seats, a handle with a connecting sleeve is sleeved on the arc side surface of the door rotating shaft, a moving seat is inserted into the surface of one side of each door seat, hinge seats movably installed with the moving seat are fixedly installed at the positions, close to the upper end and the lower end, of the left side surface and the right side surface of the front cavity box body, a locking shaft support is fixedly installed below the hinge, the left side surface and the right side surface of the front cavity box body are rotatably provided with knobs close to the rear part of the locking shaft bracket, the arc side surface of each knob is provided with a U-shaped groove, the surface of one side of each knob is fixedly provided with a shifting shaft, the arc side surface of each shifting shaft is fixedly provided with a shifting wheel, and the left side surface and the right side surface of the front cavity box body are provided with stop buttons close to the lower ends of the knobs;

the middle position in the front cavity box body is fixedly provided with a front cavity middle partition plate for dividing the interior of the front cavity box body into a left cavity and a right cavity, the left cavity and the right cavity of the front cavity box body are identical in internal structure, a cavity core plate is fixedly arranged on the inner wall of the rear end of the right cavity of the front cavity box body, a mutual inductor support is fixedly arranged on the upper surface of the cavity core plate, a current mutual inductor is fixedly arranged on the lower surface of the mutual inductor support, two alternating current vacuum contactors, a three-phase reactor and a control transformer are fixedly arranged on the front surface of the cavity core plate, the two alternating current vacuum contactors are distributed along one diagonal line of the cavity core plate, the three-phase reactor and the control transformer are distributed along the other diagonal line, a combined switch fixing plate is fixedly arranged on the inner wall of the right cavity of the front cavity box body close to the edge, and a porcelain safety, the front surface fixed mounting of porcelain insurance support has the porcelain insurance, the position fixed mounting that the left surface of combination switch fixed plate is close to the middle part has combination switch, the rear surface fixed mounting of door plant has a core board, the rear surface of door core board from left to right in proper order fixed mounting have electric leakage filter module and guide's plug-in components, the top fixed mounting that the rear surface of door plant is close to the core board has the protector.

Further, the method comprises the following steps: the internal structures of the left cavity and the right cavity of the front cavity box body are arranged in a horizontal mirror image mode by taking the middle partition plate in the front cavity as a midpoint.

Further, the method comprises the following steps: the current transformer, the alternating current vacuum contactor, the three-phase reactor, the control transformer, the porcelain fuse, the combination switch, the leakage filter module, the pilot plug-in, the protector and the dry-type transformer in the left cavity and the right cavity form a first loop circuit and a second loop circuit, the protector, the leakage filter module and the three-phase reactor are electrically connected with the current transformer after being connected in series, the current transformer is electrically connected with the dry-type transformer after being connected in series with the alternating current vacuum contactor, the combination switch is electrically connected with the alternating current vacuum contactor after being connected in series with the porcelain fuse, and the pilot plug-in is connected in series with the protector.

Further, the method comprises the following steps: the movable seat is movably connected with the hinge seat through a pin shaft.

Further, the method comprises the following steps: the locking shaft corresponds to the upper U-shaped groove of the knob, and the knob is fixed with the combined switch through the shifting shaft.

Further, the method comprises the following steps: the side face, far away from the edges of the left door flange and the right door flange, of the door plate is fixedly provided with a handle.

Further, the method comprises the following steps: the equal fixed mounting in the position that left side door flange and right door flange's lower surface are adjacent has a layer board, the lower surface of left side door flange and right door flange is close to the fixture block and the outer fixed block that the edge was all installed the card.

The invention has the beneficial effects that:

1. the locking shaft is matched with the U groove on the knob for use, a quick door opening structure is realized, the internal body can be protected, the operation safety of personnel is ensured, the quick door opening is realized, the power-off locking can also be realized, the opening of the door is forbidden under the power-on state of the equipment, the knob is fixed with the combined switch on the combined switch fixing plate through the shifting shaft under the power-on state or the power-off state, the knob can control the opening and closing of the combined switch to generate the power-on state and the power-off state, the locking shaft is not inserted into the U groove on the knob during power-on, the locking shaft is not in any contact with the knob, the door panel can be blocked by the other end of the locking shaft, the door panel cannot be opened by a method, the U groove on the knob aligns at the locking shaft during power-off, the locking shaft on the locking shaft bracket is rotated into the U groove, the knob cannot be, the handle is sleeved on the door rotating shaft and drives the moving seat on the door seat to rotate along the hinge seat, so that the door plate is driven to be opened, and the quick door opening is realized;

2. by adopting a double-power-supply double loop, leakage locking and online leakage protection can be realized, double power supplies are introduced, double loop output can be realized, two paths of power supplies can be introduced simultaneously for supplying power, two paths of loop output and two paths of power supplies are introduced, each combined switch selects to connect or disconnect the power supply for supplying power, the two paths of power supplies are respectively sucked by an alternating current vacuum contactor and a protector power supply selection contactor of two loops through a control transformer of each loop, each loop power supply can supply power to a dry-type transformer only through the suction of the contactor of each loop, after the dry-type transformer is powered, the two loops can independently control the suction of the alternating current vacuum contactor, and the dry-type transformer outputs 127V power to supply power to external lighting and monitoring equipment through the alternating current vacuum contactor; the AC vacuum contactor of two return circuits locks, only one can the actuation, when starting, when outage or other trouble appear in arbitrary one circuit power, AC vacuum contactor disconnection, two loop protector homoenergetic receive the signal, disconnection loop protector disconnection start instruction, another loop protector sends start instruction, automatic switch-over to another power, realize uninterrupted power supply, the protector is supplied power simultaneously through control transformer output 15V voltage by two way power, even only power of the same kind, also can control two way protectors simultaneously, and then control AC vacuum contactor, select the return circuit output.

Drawings

The invention will be further described with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of the overall structure of a mining explosion-proof and intrinsically safe dual-power dual-loop illumination comprehensive protection device;

FIG. 2 is a schematic diagram of the internal structure of the mining explosion-proof and intrinsically safe dual-power dual-loop illumination comprehensive protection device;

FIG. 3 is a schematic structural diagram of a right cavity in the mining explosion-proof and intrinsically safe dual-power dual-loop illumination comprehensive protection device;

FIG. 4 is an enlarged view of a position B in FIG. 2 of the mining explosion-proof and intrinsically safe dual-power dual-loop illumination comprehensive protection device.

In the figure: 1. a wire box cover plate; 2. a wire box; 3. a rear closing plate; 4. a rear chamber box body; 5. a front chamber box body; 6. a support base; 7. a wiring terminal wire passage; 8. a door tray; 9. a clamping block; 10. an outer fixed block; 11. a door panel; 12. a handle; 13. a left door flange; 14. a right door flange; 15. a latching shaft; 16. a locking shaft support; 17. a U groove; 18. a knob; 19. a door hinge; 20. a door seat; 21. a door closing groove; 22. a movable seat; 23. a hinge mount; 24. a handle; 25. a rail bracket; 26. a cavity core plate; 27. an AC vacuum contactor; 28. a door core panel; 29. a leader plug-in; 30. a protector; 31. controlling the transformer; 32. a combination switch fixing plate; 33. ceramic insurance; 34. a dry-type transformer; 35. a combination switch; 36. a current transformer; 37. a transformer support; 38. a septum vertical plate in the front cavity; 39. a leakage filtering module; 40. a three-phase reactor; 41. a porcelain safety bracket; 42. a stop button; 43. a thumb wheel; 44. a poke shaft.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to 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. 1-4, the mining explosion-proof and intrinsically safe dual-power dual-loop illumination comprehensive protection device comprises a support base 6, wherein a front cavity box body 5 and a rear cavity box body 4 are fixedly installed on the upper surface of the support base 6 from front to back in sequence, two wiring terminal wire passing channels 7 which are vertically arranged are fixedly installed at positions between the left side and the right side of the front cavity box body 5 and the rear cavity box body 4, a wire box 2 is fixedly installed on the upper surfaces of the front cavity box body 5 and the rear cavity box body 4, and a wire box cover plate 1 is fixedly installed on the upper surface of the wire box 2;

the rear surface of the rear cavity box body 4 is hinged with a rear sealing plate 3, two guide rail brackets 25 which are arranged in parallel are fixedly arranged on the inner wall of the bottom end of the rear cavity box body 4, and a dry-type transformer 34 is fixedly arranged on the upper surfaces of the two guide rail brackets 25;

a left door flange 13 and a right door flange 14 are fixedly installed on the front surface of the front cavity box body 5 from left to right in sequence, a door closing groove 21 is fixedly installed on the side surfaces, far away from the center of the front cavity box body 5, of the left door flange 13 and the right door flange 14, a door panel 11 is movably installed on the front surfaces of the left door flange 13 and the right door flange 14, door seats 20 are fixedly installed on the other side surface of the door panel 11, close to the upper end and the lower end, a door rotating shaft 19 is fixedly installed between the two door seats 20, a handle 24 with a connecting sleeve is sleeved on the arc side surface of the door rotating shaft 19, a moving seat 22 is inserted on one side surface of the door seat 20, hinge seats 23 movably installed with the moving seat 22 are fixedly installed on the left side surface and the right side surface of the front cavity box body 5, close to the lower part of the hinge seat 23 above, locking shaft supports 16 are fixedly installed on the, a locking shaft 15 penetrates through the front surface of the locking shaft support 16, knobs 18 are rotatably mounted on the left and right side surfaces of the front cavity box body 5 close to the rear of the locking shaft support 16, U-shaped grooves 17 are formed in the arc side surfaces of the knobs 18, a shifting shaft 44 is fixedly mounted on the surface of one side of each knob 18, a shifting wheel 43 is fixedly mounted on the arc side surface of each shifting shaft 44, and stop buttons 42 are arranged on the left and right side surfaces of the front cavity box body 5 close to the lower end of each knob 18;

a front cavity middle partition plate 38 for dividing the interior of the front cavity box 5 into a left cavity and a right cavity is fixedly installed at the middle position of the interior of the front cavity box 5, the left cavity and the right cavity of the front cavity box 5 have the same internal structure, a cavity core plate 26 is fixedly installed on the inner wall of the rear end of the right cavity of the front cavity box 5, a transformer bracket 37 is fixedly installed on the upper surface of the cavity core plate 26, a current transformer 36 is fixedly installed on the lower surface of the transformer bracket 37, two alternating current vacuum contactors 27, a three-phase reactor 40 and a control transformer 31 are fixedly installed on the front surface of the cavity core plate 26, the two alternating current vacuum contactors 27 are distributed along one diagonal line of the cavity core plate 26, the three-phase reactor 40 and the control transformer 31 are distributed along the other diagonal line, and a combined switch fixing plate 32 is fixedly installed on the inner wall of the side surface of the right, the fixed position that the left surface of combination switch fixed plate 32 is close to the rear end installs porcelain insurance support 41, the preceding fixed surface of porcelain insurance support 41 installs porcelain insurance 33, the fixed position that the left surface of combination switch fixed plate 32 is close to the middle part installs combination switch 35, the rear surface fixed mounting of door plant 11 has door core board 28, the rear surface of door core board 28 from left to right in proper order fixed mounting have electric leakage filter module 39 and guide's plug-in components 29, the top fixed mounting that the rear surface of door plant 11 is close to door core board 28 has protector 30.

The internal structures of the left cavity and the right cavity of the front cavity box body 5 are arranged in a horizontal mirror image mode by taking the middle partition plate 38 in the front cavity as a midpoint; the current transformer 36, the alternating current vacuum contactor 27, the three-phase reactor 40, the control transformer 31, the porcelain fuse 33, the combined switch 35, the leakage filter module 39, the pilot plug-in unit 29, the protector 30 and the dry-type transformer 34 in the left cavity and the right cavity form a first loop circuit and a second loop circuit, the protector 30, the leakage filter module 39 and the three-phase reactor 40 are electrically connected with the current transformer 36 after being connected in series, the current transformer 36 is electrically connected with the dry-type transformer 34 after being connected in series with the alternating current vacuum contactor 27, the combined switch 35 is electrically connected with the alternating current vacuum contactor 27 after being connected in series with the porcelain fuse 33, and the pilot plug-in unit 29 is connected in series with the protector 30; the movable seat 22 is movably connected with the hinge seat 23 by a pin shaft; the locking shaft 15 corresponds to the upper U-shaped groove 17 of the knob 18, and the knob 18 is fixed with the combination switch 35 through the dial shaft 44; a handle 12 is fixedly arranged on the side surface of the door panel 11 far away from the edges of the left door flange 13 and the right door flange 14; the lower surfaces of the left door flange 13 and the right door flange 14 are adjacent to each other and are fixedly provided with door supporting plates 8, and the lower surfaces of the left door flange 13 and the right door flange 14 are close to the edges and are provided with clamping blocks 9 and outer fixing blocks 10.

The working principle is as follows: when the device is used, the locking shaft 15 is matched with the U groove 17 on the knob 18, a quick door opening structure is realized, the internal body can be protected, the operation safety of personnel can be protected, the quick door opening can be realized, the power-off locking can also be realized, the opening of the door is forbidden under the power-on state of the device, the knob 18 is fixed with the combination switch 35 on the combination switch fixing plate 32 through the poking shaft 44 under the power-on state or the power-off state, the knob 18 can control the opening and closing of the combination switch 35 to generate the power-on state and the power-off state, the locking shaft 15 is not inserted into the U groove 17 on the knob 18 during the power-on state, the locking shaft 15 is not in contact with the knob 18, the other end of the locking shaft 15 can block the door panel 11, the door panel 11 cannot be opened, the U groove 17 on the knob 18 can be aligned with the locking shaft 15 during the power-off state, the knob 18 cannot rotate, the other end of the locking shaft 15 cannot block the door panel 11, the handle 24 with the connecting sleeve is used for pulling the door panel 11, the handle 24 is sleeved on the door rotating shaft 19, and the moving seat 22 on the door seat 20 is driven to rotate along the hinge seat 23, so that the door panel 11 is driven to open, and quick opening is realized;

each circuit of combination switch 35 selectively connects or disconnects the power supply for power supply, two circuits of power supplies respectively pass through the control transformer 31 of each circuit and supply power to the alternating current vacuum contactor 27 and the protector 30 of two circuits for selective contactor attraction, each circuit of power supply can supply power to the dry type transformer 34 only through the contactor attraction of each circuit, after the dry type transformer 34 is powered on, the two circuits can independently control the alternating current vacuum contactor 27 for attraction, when the protector 30 is powered on, the automatic attraction is realized, and when the circuit has faults such as short circuit, the protection circuit is automatically disconnected; the two contactors of the power input part are controlled to be locked, the two contactors are in a normally closed state in a normal state, when one contactor is closed, the normally closed contact is changed into a normally open contact, and the other contactor lacks a normally closed contact condition, so that the closing cannot be performed, and the power is prevented from being short-circuited; the stop button 42 is normally closed, and when a fault occurs, it is pressed down, the contactor is turned off, the power supply is cut off, and a stop signal is sent to the protector 30;

the dry-type transformer 34 is electrified to output two paths of 133V voltage for lighting, monitoring equipment power supply and the alternating current vacuum contactor 27, the alternating current vacuum contactor 27 of the two loops respectively controls whether the loops output 133V voltage, the alternating current vacuum contactor 27 is electrified to pull in under the condition that the dry-type transformer 34 normally outputs 133V voltage, the current transformer 36 is respectively used for three-phase current output detection and protection of the two loops, the protector 30 can check in real time, the three-phase reactors 40 and the leakage filter module 39 in the two loops are used for leakage detection, the voltage of the three-phase reactor 40 is unstable when a fault occurs, and signals are sent to the protector 30 for leakage protection.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The foregoing is illustrative and explanatory only and is not intended to be exhaustive or to limit the invention to the precise embodiments described, and various modifications, additions, and substitutions may be made by those skilled in the art without departing from the scope of the invention or exceeding the scope of the claims.