CN219554374U

CN219554374U - Sealed explosion-proof dual-power distribution box

Info

Publication number: CN219554374U
Application number: CN202320570597.8U
Authority: CN
Inventors: 李颖; 杨五洲; 刘军宝; 余路路; 张莉
Original assignee: Anhui Haike Electric Co ltd
Current assignee: Anhui Haike Electric Co ltd
Priority date: 2023-03-22
Filing date: 2023-03-22
Publication date: 2023-08-18
Anticipated expiration: 2033-03-22

Abstract

The utility model provides a sealed explosion-proof dual-power distribution box, which belongs to the technical field of distribution boxes and comprises a distribution box body, wherein a return-type sealing plate is arranged at an opening at the front side of the inside of the distribution box body, the front side of the distribution box body is rotationally connected with a closed door plate, one surface of the closed door plate, which is close to the distribution box body, is provided with a sealing plug plate, and a containing groove is formed in the sealing plug plate; the utility model discloses a sealing plug board, including sealing plug board, install air pressure seal mechanism on the sealing plug board, air pressure seal mechanism is including returning gasbag and air pump and contact sensor, and sealing plug board internally mounted has the PLC controller, and this device can realize the preliminary seal of block terminal through sealing plug board and returning the closing plate, and rethread air pump air pressure seal mechanism and returning the gasbag can carry out the complete seal to the block terminal, can replace the sealing washer that expends with heat and contract with cold and ageing easily, promotes sealed explosion-proof nature.

Description

Sealed explosion-proof dual-power distribution box

Technical Field

The utility model mainly relates to the technical field of distribution boxes, in particular to a sealed explosion-proof dual-power distribution box.

Background

The distribution box is electric equipment, has the characteristics of small volume, simple installation, special technical performance, fixed position, unique configuration function, no site limitation, more common application, stable and reliable operation, high space utilization rate, small occupied area and environmental protection effect, and the dual-power distribution box is one of the distribution boxes.

The dual-power distribution box used for the electrical wiring in flammable and explosive places needs to be sealed and explosion-proof, electrical equipment is isolated from flammable and explosive substances such as flammable gas or dust and the like, an explosion-proof effect is achieved, and according to search, in the patent with the patent number of CN202122259123.5, an explosion-proof distribution box sealing structure is provided, the distribution box is sealed through a sealing gasket, but after the sealing gasket is easily affected by thermal expansion and cold contraction, aging and other reasons, the sealing effect is greatly reduced, and the flammable and explosive substances such as dust or flammable gas and the like easily enter the distribution box, so that the electrical equipment in the distribution box is burnt or exploded.

Disclosure of Invention

The utility model mainly provides a sealed explosion-proof dual-power distribution box which is used for solving the technical problems in the background technology.

The technical scheme adopted for solving the technical problems is as follows:

the utility model provides a sealed explosion-proof dual power supply block terminal, includes the block terminal body, the inside front side opening part of block terminal body is installed and is returned the closing plate, the front side of block terminal body rotates and is connected with closed door plant, the closing plate plant is close to block terminal body one side and installs sealed cock plate, sealed cock plate inside is provided with the holding tank; the sealing plug plate is provided with an air pressure sealing mechanism, the air pressure sealing mechanism comprises a return air bag, an air pump and a contact sensor, the return air bag is arranged in the accommodating groove, the air pump is arranged on one surface inside the sealing plug plate, the air pump is connected with the return air bag through an air pipe, and the contact sensor is arranged on one surface, close to the return sealing plate, of the bottom of the closed door plate; the sealing plug plate internally mounted has the PLC controller, air pump, contact sensor all realize electric connection with the PLC controller.

Further, two heat exchange air pipes are installed at the top of the side face of the distribution box body, and dustproof filter screens are installed in the two heat exchange air pipes.

Further, the internally mounted of return type gasbag has the air pressure detector, audible-visual annunciator is installed at the top of block terminal body, air pressure detector and audible-visual annunciator all realize electric connection with the PLC controller.

Further, the length and the width of the sealing plug plate are matched with the length and the width of the inner wall of the square sealing plate, and a sealing gasket is arranged on one surface of the square sealing plate, which is close to the closing door plate.

Further, a blind groove is formed in the closed door plate of the contact sensor area, the width of the opening of the blind groove is smaller than the inner width, two compression springs and a limiting plate are arranged in the blind groove, and one end of the inner portion of the contact sensor is connected with the limiting plate.

Further, the air pipe end that the air pump is connected is installed the valve core, the valve core is located the inside of holding tank, the internally mounted of returning the gasbag has the inflating valve with the valve core adaptation.

Further, the pneumatic sealing mechanism further comprises a plurality of threaded cylinder shafts which are rotatably connected and installed on the inner wall of the accommodating groove at equal intervals, and the threaded shafts which are matched with the threaded cylinder shafts are installed in the air bag.

Compared with the prior art, the utility model has the beneficial effects that:

firstly, the device can realize the primary sealing of the distribution box through the sealing plug plate and the return-type sealing plate, and then the distribution box can be completely sealed through the air pump and the return-type air bag of the air pressure sealing mechanism, so that a sealing gasket which is easy to expand with heat and contract with cold and age can be replaced, and the sealing explosion resistance is improved;

secondly, the device can automatically complete the starting of the air pressure sealing mechanism when the closed door plate is closed through the contact sensor, thereby completing automatic sealing operation and increasing convenience;

thirdly, can detect the inside atmospheric pressure of back type gasbag in real time through the air pressure detector in the back type gasbag, when back type gasbag swell but the atmospheric pressure is lower, the gas leakage condition probably appears in back type gasbag, can't play sealed effect well, air pressure detector transmission signal to PLC controller this moment, and the PLC controller is starting audible and visual alarm and sending out the alarm, and suggestion staff comes to overhaul, increases the security.

The utility model will be explained in detail below with reference to the drawings and specific embodiments.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic side view of a closure panel area structure of the present utility model;

FIG. 3 is a bottom view of a closure panel area structure of the present utility model;

FIG. 4 is an enlarged view of area A of FIG. 3;

fig. 5 is a schematic view of the structure of the loop-type airbag of the present utility model.

In the figure: 10. a distribution box body; 11. a seal plate; 12. a heat exchange air pipe; 13. a dust-proof filter screen; 20. closing the door panel; 21. sealing the plug plate; 22. a hidden groove; 211. a receiving groove; 30. an air pressure sealing mechanism; 31. a loop-shaped air bag; 32. an air pump; 33. a contact sensor; 34. a valve core; 35. a threaded shaft; 36. an inflating valve; 37. a limiting plate; 38. a compression spring; 39. a threaded cylinder shaft; 40. an audible and visual alarm; 50. and a PLC controller.

Detailed Description

In order that the utility model may be more fully understood, a more particular description of the utility model will be rendered by reference to the appended drawings, in which several embodiments of the utility model are illustrated, but which may be embodied in different forms and are not limited to the embodiments described herein, which are, on the contrary, provided to provide a more thorough and complete disclosure of the utility model.

It will be understood that when an element is referred to as being "mounted" on another element, it can be directly on the other element or intervening elements may be present, and when an element is referred to as being "connected" to the other element, it may be directly connected to the other element or intervening elements may also be present, the terms "vertical", "horizontal", "left", "right" and the like are used herein for the purpose of illustration only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs, and the terms used herein in this description of the utility model are for the purpose of describing particular embodiments only and are not intended to be limiting of the utility model, with the term "and/or" as used herein including any and all combinations of one or more of the associated listed items.

1-5, a sealed explosion-proof dual-power distribution box comprises a distribution box body 10, wherein a back-shaped sealing plate 11 is arranged at an opening at the front side of the inside of the distribution box body 10, a closing door plate 20 is rotatably connected to the front side of the distribution box body 10, a sealing plug plate 21 is arranged on one surface of the closing door plate 20 close to the distribution box body 10, and a containing groove 211 is formed in the sealing plug plate 21; the sealing plug plate 21 is provided with an air pressure sealing mechanism 30, the air pressure sealing mechanism 30 comprises a circular air bag 31 and an air pump 32, the circular air bag 31 is arranged in the accommodating groove 211, the air pump 32 is arranged on one surface of the inner part of the sealing plug plate 21, the air pump 32 is connected with the circular air bag 31 through an air pipe, and the contact sensor 33 is arranged on one surface of the bottom of the closing door plate 20 close to the circular sealing plate 11; the PLC controller 50 is arranged in the sealing plug plate 21, and the air pump 32 and the contact sensor 33 are electrically connected with the PLC controller 50.

Specifically, please refer to fig. 1, two heat exchange air pipes 12 are installed at the top of the side of the power distribution box 10, a dust-proof filter screen 13 is installed inside the two heat exchange air pipes 12, a certain amount of heat is generated during operation inside the power distribution box 10, dust-free heat dissipation can be performed inside the power distribution box 10 through the heat exchange air pipes 12, and dust can be further prevented from entering the power distribution box 10 through the dust-proof filter screen 13.

Further, the air pressure detector is installed in the back-shaped air bag 31, the audible and visual alarm 40 is installed at the top of the distribution box 10, the audible and visual alarm 40 is electrically connected with the PLC controller 50, the air pressure inside the back-shaped air bag 31 can be detected in real time through the air pressure detector inside the back-shaped air bag 31, when the back-shaped air bag 31 bulges but the air pressure is low, the air leakage condition of the back-shaped air bag 31 possibly occurs, the sealing effect cannot be well achieved, at the moment, the air pressure detector transmits a signal to the PLC controller 50, and the PLC controller 50 sends an alarm when the audible and visual alarm 40 is started to prompt workers to overhaul.

Further, the length and width of the sealing plug plate 21 are matched with the length and width of the inner wall of the square sealing plate 11, a sealing gasket is installed on one surface of the square sealing plate 11 close to the closing door plate 20, when the closing door plate 20 is closed, the square sealing plate 11 can be plugged by the sealing plug plate 21, and at the moment, the square air bag 31 can be inflated through the air pump 32 to bulge, so that a gap between the sealing plug plate 21 and the square sealing plate 11 is blocked, sealing is completed, and the sealing gasket can be overlapped with the closing door plate 20, so that the sealing performance is further improved.

Specifically, referring to fig. 4, a blind groove 22 is provided on the closing door plate 20 in the area of the contact sensor 33, the width of the opening of the blind groove 22 is smaller than the internal width, two compression springs 38 and a limiting plate 37 are installed in the blind groove 22, one end of the contact sensor 33 is connected with the limiting plate 37, the contact sensor 33 retracts to a certain extent when contacting the return-type sealing plate 11, after the closing door plate 20 is prevented from closing, the return-type sealing plate 11 continuously extrudes the contact sensor 33, so that the contact sensor 33 is damaged, and the compression springs 38 can ensure that the contact sensor 33 continuously contacts the return-type sealing plate 11, so that the return-type air bag 31 is ensured to be opened.

Specifically, referring to fig. 3 and 5, the air pipe end connected with the air pump 32 is provided with a valve core 34, the valve core 34 is located in the accommodating groove 211, the interior of the air bag 31 is provided with a valve 36 adapted to the valve core 34, and the air pump 32 and the air bag 31 can be communicated through butt joint of the valve core 34 and the valve 36, so that ventilation can be realized after the new air bag 31 is replaced.

Further, the pneumatic sealing mechanism 30 further comprises a plurality of threaded cylinder shafts 39 which are rotatably connected and installed on the inner wall of the accommodating groove 211 at equal distances, the threaded shafts 35 which are matched with the threaded cylinder shafts 39 are installed in the interior of the circular air bag 31, the circular air bag 31 has service life, when the circular air bag 31 is replaced, the threaded cylinder shafts 39 and the threaded shafts 35 can be separated, so that the circular air bag 31 is taken down, and the threaded shafts 35 of the new circular air bag 31 are butted with the threaded cylinder shafts 39, so that the circular air bag 31 can be fixedly installed in the accommodating groove 211, and the pneumatic sealing mechanism is simple and convenient.

The specific operation mode of the utility model is as follows:

after the closing door plate 20 is closed, the sealing plug plate 21 in the closing door plate 20 is plugged into the sealing plate 11, so that primary sealing is finished, at the moment, the contact sensor 33 on the inner side of the bottom of the closing door plate 20 is contacted with the sealing plate 11, a signal is transmitted to the PLC controller 50 after the contact sensor 33 senses the contact, the PLC controller 50 starts the air pump 32 to operate, thereby supplying air to the air bag 31, and after the air bag 31 bulges, a gap between the sealing plate 11 and the sealing plug plate 21 is filled, so that complete sealing is realized, and the sealing explosion-proof performance is realized;

and when the back-shaped air bag 31 bulges but the air pressure is lower, the back-shaped air bag 31 possibly has air leakage, and cannot well play a sealing role, at this time, the air pressure detector transmits a signal to the PLC controller 50, and the PLC controller 50 starts the audible and visual alarm 40 to give an alarm, so that a worker is prompted to overhaul.

While the utility model has been described above with reference to the accompanying drawings, it will be apparent that the utility model is not limited to the embodiments described above, but is intended to be within the scope of the utility model, as long as such insubstantial modifications are made by the method concepts and technical solutions of the utility model, or the concepts and technical solutions of the utility model are applied directly to other occasions without any modifications.

Claims

1. The utility model provides a sealed explosion-proof dual power supply block terminal, includes block terminal body (10), its characterized in that, back form closing plate (11) are installed to the inside front side opening part of block terminal body (10), the front side rotation of block terminal body (10) is connected with closed door plant (20), closed door plant (20) are close to block terminal body (10) one side and install sealed cock plate (21), sealed cock plate (21) inside is provided with holding tank (211);

the sealing plug plate (21) is provided with an air pressure sealing mechanism (30), the air pressure sealing mechanism (30) comprises a return air bag (31), an air pump (32) and a contact sensor (33), the return air bag (31) is arranged in the accommodating groove (211), the air pump (32) is arranged on one side of the inner part of the sealing plug plate (21), the air pump (32) is connected with the return air bag (31) through an air pipe, and the contact sensor (33) is arranged on one side, close to the return sealing plate (11), of the bottom of the closed door plate (20);

the sealing plug plate (21) is internally provided with a PLC (programmable logic controller) controller (50), and the air pump (32) and the contact sensor (33) are electrically connected with the PLC controller (50).

2. The sealed explosion-proof dual-power distribution box according to claim 1, wherein two heat exchange air pipes (12) are installed at the top of the side face of the distribution box body (10), and a dustproof filter screen (13) is installed inside each of the two heat exchange air pipes (12).

3. The sealed explosion-proof dual-power distribution box according to claim 1, wherein an air pressure detector is installed in the back-shaped air bag (31), an audible and visual alarm (40) is installed at the top of the distribution box body (10), and the air pressure detector and the audible and visual alarm (40) are electrically connected with a PLC (programmable logic controller) 50.

4. The sealed explosion-proof dual-power distribution box according to claim 1, wherein the length and the width of the sealing plug plate (21) are matched with the length and the width of the inner wall of the return-type sealing plate (11), and a sealing gasket is arranged on one surface of the return-type sealing plate (11) close to the closing door plate (20).

5. The sealed explosion-proof dual-power distribution box according to claim 1, wherein a blind groove (22) is arranged on a closed door plate (20) in the area of the contact sensor (33), the width of an opening of the blind groove (22) is smaller than the internal width, two compression springs (38) and a limiting plate (37) are arranged in the blind groove (22), and one end of the interior of the contact sensor (33) is connected with the limiting plate (37).

6. The sealed explosion-proof dual-power distribution box according to claim 1, wherein a valve core (34) is installed at the tail end of an air pipe connected with the air pump (32), the valve core (34) is located in the accommodating groove (211), and a valve (36) matched with the valve core (34) is installed in the air bag (31).

7. The sealed explosion-proof dual-power distribution box according to claim 1, wherein the air pressure sealing mechanism (30) further comprises a plurality of threaded cylinder shafts (39) which are installed on the inner wall of the accommodating groove (211) in an equidistant rotating connection mode, and the threaded shaft (35) matched with the threaded cylinder shafts (39) is installed in the circular air bag (31).