CN211017947U

CN211017947U - Maintenance-free power distribution cabinet

Info

Publication number: CN211017947U
Application number: CN201922088539.8U
Authority: CN
Inventors: 不公告发明人
Original assignee: Yangzhou Renzhi Information Technology Co ltd
Current assignee: Yangzhou Renzhi Information Technology Co ltd
Priority date: 2019-11-27
Filing date: 2019-11-27
Publication date: 2020-07-14
Anticipated expiration: 2029-11-27

Abstract

The utility model relates to a switch board technical field, and disclose non-maintaining switch board, including the cabinet body, cabinet door and cabinet top, cabinet top inboard is provided with the heat dissipation fan, and first insulating block is installed to the symmetry on the internal side wall of cabinet, and the cabinet door has the second insulating block, and the wire is all installed with the wiring end of heat dissipation fan to first insulating block, and first insulating block and second insulating block installation conducting block, first insulating block top are provided with the temperature sensing device. This non-maintaining switch board, when the long-time during operation of the internal electrical components of cabinet, the temperature of the cabinet body risees the back, mercury in the casing is heated the inflation, the conducting rod and the contact of both ends wire are being pushed up to expanded mercury, make the wire accomplish closed loop, make the heat dissipation fan set up work, realized when the switch board internal temperature reaches the take the altitude, the temperature-sensing device can contact with the wire automatically, it makes the work of heat dissipation fan to close the wire into complete return circuit, the work of heat dissipation fan work all the time has been solved, extravagant electric power and the work of heat dissipation fan produce thermal problem again.

Description

Maintenance-free power distribution cabinet

Technical Field

The utility model relates to a switch board technical field specifically is non-maintaining switch board.

Background

The power distribution cabinet is a general name of a motor control center and is used in occasions with dispersed loads and less loops; motor control centers are used in load concentration and loop-rich applications, where they distribute the power from a circuit of a higher level of distribution equipment to nearby loads, which provide protection, monitoring and control of the loads.

There is disclosed an energy-conserving electric automatization switch board (201920914162.4), including the cabinet body, cabinet door, cabinet top cap, install the motor through the backup pad on the inside wall of cabinet top cap, the heat dissipation fan is installed to the drive end of motor, the cabinet body is close to the symmetry on the inside wall on top and installs two first insulating blocks, install the second insulating block corresponding with first insulating block on the inside wall of cabinet door, two first insulating block all installs first wire, two with the wiring end of motor between the second insulating block through installing first wire, first conducting block that corresponds each other is all installed to first insulating block and second insulating block. The switch board of this scheme can stop the heat dissipation of heat dissipation fan when opening the cabinet door and overhaul the operation in addition possessing heat dissipation and illumination function, can close the illumination of illumination lamp body when closing the cabinet door to make the switch board reduce the consumption to the electric energy, possess energy-conserving effect. However, the prior art disclosed herein has the following problems that when the power distribution cabinet is applied in real life, a part of generated heat is discharged through the air outlets at both sides of the power distribution cabinet, and then secondary heat dissipation is performed inside the power distribution cabinet by adding the heat dissipation fan, and the purpose achieved by the prior art disclosure is that "the cabinet door is closed, the heat dissipation fan works to perform heat dissipation and air exhaust inside the power distribution cabinet", but when the temperature inside the power distribution cabinet is at a normal temperature, the power distribution cabinet does not need to be cooled, because the heating condition of the power distribution cabinet is determined according to the working state and the number of the electrical components inside the power distribution cabinet, when the power distribution cabinet is in a working state for a long time and large-scale components work simultaneously, the generated heat is greater than the discharged heat, when the temperature inside the power distribution cabinet is higher, the heat dissipation fan is required to perform, just also need not the heat dissipation fan and dispel the heat to the switch board, consequently there is the problem that some use the heat dissipation fan under the unnecessary condition in the technique of current disclosure, not only extravagant power resource, the work of heat dissipation fan also can increase the thermal production of switch board moreover. Therefore, in order to solve the above problems, it is necessary to provide a maintenance-free power distribution cabinet.

SUMMERY OF THE UTILITY MODEL

Technical problem to be solved

The utility model provides a not enough to prior art, the utility model provides a non-maintaining switch board possesses automatic change situation according to the interior temperature of switch board and reaches advantages such as automatic work, saving electric power resource and the radiating effect of heat dissipation fan are better, has solved the heat dissipation fan and has been in the state of work, extravagant electric power resource and the not good problem of radiating effect always at the cabinet door closure condition.

(II) technical scheme

In order to realize that above-mentioned automation reaches automatic work, the saving power resource and the better purpose of radiating effect of heat dissipation fan according to the situation of change of temperature in the switch board, the utility model provides a following technical scheme: a maintenance-free power distribution cabinet comprises a cabinet body, a cabinet door and a cabinet top, wherein the cabinet door is connected with the cabinet body through a hinge, the cabinet top is arranged at the top of the cabinet body, a heat dissipation fan is arranged on the inner side wall surface of the cabinet top, the heat dissipation fan is connected with the output end of the heat dissipation fan motor at the top of a supporting plate, two first insulating blocks are symmetrically arranged on the inner side wall of the cabinet body close to the top end, second insulating blocks corresponding to the first insulating blocks are arranged on the inner side wall of the cabinet door, a lead is respectively arranged between the two first insulating blocks and a wiring end of the heat dissipation fan motor, a lead is arranged between the two second insulating blocks, the first insulating blocks and the second insulating blocks are respectively provided with a conductive block corresponding to each other, a temperature sensing device is arranged at the top of the first insulating blocks, the temperature sensing device comprises a shell, a glass cover, a piston and a conductive, thread groove and thread groove have been seted up at first insulating block top and the thread groove is seted up on the internal lateral wall face of cabinet, the screw thread threaded connection of casing is in the thread groove of the internal side of cabinet, glass cover fixed mounting just is keeping away from the one end of screw thread at a side wall of casing, the piston is a cylinder rubber piston, the piston block just can slide in the casing at the casing intracavity, the conducting rod is a round platform body metal conducting rod, conducting rod fixed connection just is located the one side of keeping away from the glass cover at the piston wall, glass cover and piston intussuseption are filled with mercury, the through-hole has all been seted up to casing top and bottom, insert respectively in the casing after the wire both ends are cut off and both ends wire do not connect together, the casing wall has been seted up venthole and venthole is seted up between screw thread and wire both ends.

Preferably, the first insulating block is a rectangular ceramic body.

Preferably, the second insulating block is a rectangular ceramic body.

Preferably, the air outlet is a circular hole.

Preferably, the limiting clamping block is a rectangular block.

Preferably, the conductive block is a cylinder.

(III) advantageous effects

Compared with the prior art, the utility model provides a non-maintaining switch board possesses following beneficial effect:

1. this non-maintaining switch board, when the long-time during operation of the internal electrical components of cabinet, the temperature of the cabinet body risees the back, mercury in the casing is heated the inflation, the conducting rod and the contact of both ends wire are being pushed up to expanded mercury, make the wire accomplish closed loop, make the work of seting up of heat dissipation fan, when having realized the temperature in the switch board and reaching the take place height, the temperature-sensing device can contact with the wire automatically, it makes the work of heat dissipation fan to close into complete return circuit with the wire, the work of heat dissipation fan work all the time has been solved, extravagant electric power and the work of heat dissipation fan produce thermal problem again, greatly reduced the switch board need maintain with the probability of occurence of failure, reach.

2. This non-maintaining switch board, after the heat dissipation fan reduces the internal temperature of cabinet, the mercury volume reduces, and the atmospheric pressure is pressing the piston and is recovering to the normal position for conducting rod and wire disconnection realize closing the heat dissipation fan, have solved the internal temperature of cabinet and have reduced the back, the problem of heat dissipation fan still work always.

Drawings

FIG. 1 is a cross-sectional view of the main body of the power distribution cabinet of the present invention;

FIG. 2 is an enlarged view of the point A in FIG. 1 according to the present invention;

fig. 3 is a schematic view of the main structure of the temperature sensing device of the present invention.

In the figure: the cabinet comprises a cabinet body 1, a cabinet door 2, a cabinet top 3, a heat dissipation fan 4, a first insulating block 5, a second insulating block 6, a lead 7, a conductive block 8, a temperature sensing device 9, a casing 901, a glass cover 902, a piston 903, a conductive rod 904, threads 10, mercury 11, an air outlet hole 12 and a limiting clamping block 13.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: a maintenance-free power distribution cabinet comprises a cabinet body 1, a cabinet door 2 and a cabinet top 3, wherein the cabinet door 2 is connected with the cabinet body 1 through a hinge, the cabinet top 3 is arranged at the top of the cabinet body 1, a heat dissipation fan 4 is arranged on the inner side of the cabinet top 3, a heat dissipation fan motor is arranged on the inner side wall surface of the cabinet top 3 through a supporting plate, the heat dissipation fan 3 is connected with the output end of the heat dissipation fan motor at the top of the supporting plate, when the heat dissipation fan 3 works, the heat dissipation treatment can be carried out on the electric elements in the cabinet body 1, hot air is discharged to the outside of the cabinet body 1, two first insulating blocks 5 are symmetrically arranged on the inner side wall of the cabinet body 1 close to the top end, second insulating blocks 6 corresponding to the first insulating blocks 5 are arranged on the inner side wall of the cabinet door 2, both the two first insulating blocks 5 and a wiring end of the heat dissipation fan motor are, the first insulating block 5 and the second insulating block 6 are respectively provided with a conductive block 8 corresponding to each other, when the cabinet door 2 and the cabinet body 1 are closed, the first insulating block 5 and the second insulating block 6 can be attached to each other, so that the conductive block 8 on the first insulating block 5 is contacted with the conductive block 8 on the second insulating block 6, the conducting wire 7 is attached together through the conductive block 8 to form a complete closed loop, the heat dissipation fan 4 is opened to work, the heat dissipation treatment is performed on the electric element in the cabinet body 1, when the cabinet door 2 is opened, the conductive block 8 on the first insulating block 5 is separated from the conductive block 8 on the second insulating block 6, the originally complete closed loop of the conducting wire 7 is opened, the heat dissipation fan 4 is closed, the top of the first insulating block 5 is provided with a temperature sensing device 9, the temperature sensing device 9 is composed of a shell 901, a glass cover 902, a piston 903 and a conductive rod 904, the casing 901 is a hollow cylindrical casing, the outer wall of the casing 901 is provided with threads 10, the top of the first insulating block 5 is provided with a thread groove, the thread groove is arranged on the inner side wall surface of the cabinet body 1, the threads 10 of the casing 901 are in threaded connection with the thread grooves on the inner side of the cabinet body 1, the glass cover 902 is fixedly arranged on one side wall surface of the casing 901 at one end far away from the threads 10, the piston 903 is a cylindrical rubber piston, the piston 903 is clamped in the cavity of the casing 901 and can slide in the casing 901, the conducting rod 904 is a circular truncated cone metal conducting rod, the conducting rod 904 is fixedly connected with the wall surface of the piston 903 and is positioned at one side far away from the glass cover 902, the glass cover 902 and the piston 903 are filled with mercury 11, through holes are arranged at the top and the bottom of the casing 901, the two ends of the lead 7 are respectively inserted into the casing 901 after being cut off, the leads 7 at the two ends are not connected, the top and the bottom of the circular truncated cone 904 are respectively and fixedly provided with a limiting fixture block 13, when the mercury 11 is heated and expanded, the limiting fixture block 13 prevents the problem that the mercury 11 pushes against the piston 903 and the conducting rod 904 to move on one side of the shell 901 and contact with two ends of the conducting wire 7, so that the conducting rod 904 can not be recovered, when the temperature in the cavity of the cabinet body 1 is low, the mercury 11 can not be heated and expanded, because a closed space is formed between the piston 903 and the glass cover 902, the mercury 11 pushes against the conducting rod 904 to contact with the conducting wires 7 at two ends, so that when the temperature in the cabinet body 1 is low, the conducting wire 7 can not complete a closed loop, so that the heat dissipation fan 4 can not work, when electrical elements in the cabinet body 1 work for a long time, the temperature of the cabinet body 1 is increased, the mercury 11 in the shell 901 is heated and expanded, the heat transfer effect of the glass cover 902 is good, so that the mercury can be immediately, make wire 7 accomplish closed circuit for heat dissipation fan 4 sets up work, the gas is extruded by piston 903 in casing 901 makes and discharges from venthole 12, and spacing fixture block 13 and both ends wire 7 rigid contact prevent that conducting rod 904 from passing from wire 7, and heat dissipation fan 4 reduces the back with the temperature reduction in the cabinet body 1, and mercury 11 volume reduces, and atmospheric pressure is pressing piston 903 and is resumeed the normal position, makes conducting rod 904 and wire 7 disconnection, and heat dissipation fan 4 closes.

The working steps are as follows:

the first step is as follows: when cabinet door 2 and the cabinet body 1 were closed, realized that first insulating block 5 and second insulating block 6 can laminate each other for conducting block 8 on the first insulating block 5 and conducting block 8 on the second insulating block 6 contact together, realized passing through conducting block 8 with wire 7 and laminating together, formed a complete closed circuit, made the work is seted up to heat dissipation fan 4, carries out the heat dissipation to the electric elements of the internal portion of cabinet.

The second step is that: when the door 2 is opened, the conductive block 8 on the first insulating block 5 is separated from the conductive block 8 on the second insulating block 6, and the closed loop end of the originally complete wire 7 is opened, so that the heat dissipation fan 4 is closed.

The third step: when the temperature in the cavity of the cabinet 1 is low, the mercury 11 is not heated and expanded, because a closed space is formed between the piston 903 and the glass cover 902, the mercury 11 pushes the conducting rod 904 to contact with the leads 7 at the two ends, so that when the temperature in the cabinet 1 is low, the leads 7 cannot complete a closed loop, and the heat dissipation fan 4 cannot work.

The fourth step: when the electric elements in the cabinet 1 work for a long time, the temperature of the cabinet 1 rises, the mercury 11 in the shell 901 expands due to heating, and the heat transfer effect of the glass cover 902 is good, so that the mercury 11 is immediately transferred to the mercury after the glass cover 902 senses the temperature, the expanded mercury 11 pushes the conducting rod 904 to contact with the leads 7 at the two ends, so that the leads 7 complete a closed loop, the heat dissipation fan 4 is opened, the gas in the shell 901 is extruded by the piston 903 to be discharged from the air outlet 12, and meanwhile, the limiting fixture block 13 is in hard contact with the leads 7 at the two ends, so that the conducting rod 904 is prevented from passing through the leads 7.

The fifth step: after the temperature in the cabinet 1 is reduced by the heat dissipation fan 4, the volume of the mercury 11 is reduced, and the piston 903 is restored to the original position under atmospheric pressure, so that the conductive rod 904 is disconnected from the lead 7, and the heat dissipation fan 4 is turned off.

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

Claims

1. Non-maintaining switch board, including the cabinet body (1), cabinet door (2) and cabinet top (3), cabinet door (2) are connected with the cabinet body (1) through the hinge, cabinet top (3) set up at cabinet body (1) top, cabinet top (3) inboard is provided with heat dissipation fan (4), two first insulating blocks (5) are installed to the symmetry on the cabinet body (1) inside wall, install second insulating block (6) corresponding with first insulating block (5) on cabinet door (2) inside wall, wire (7) are all installed with the wiring end of heat dissipation fan (4) in two first insulating blocks (5), install wire (7) between two second insulating blocks (6), conducting block (8) that correspond each other are all installed to first insulating block (5) and second insulating block (6), its characterized in that: the utility model discloses a cabinet, including first insulating block (5), temperature sensing device (9) is provided with on first insulating block (5) top, temperature sensing device (9) is by casing (901), glass cover (902), piston (903) and conducting rod (904) are constituteed, casing (901) is a hollow cylinder casing, casing (901) sets up in cabinet body (1) wall, glass cover (902) fixed mounting is in casing (901) right side wall, piston (903) set up in casing (901) intracavity, conducting rod (904) fixed connection is in piston (903) left side wall, glass cover (902) and piston (903) intussuseption are filled with mercury (11), wire (7) set up in casing (901) left side intracavity.

2. The maintenance-free power distribution cabinet according to claim 1, characterized in that: the outer wall of the shell (901) is provided with threads (10), the top of the first insulating block (5) is provided with a thread groove, the thread groove is formed in the inner side wall surface of the cabinet body (1), and the threads (10) of the shell (901) are connected in the thread groove on the inner side of the cabinet body (1) in a threaded mode.

3. The maintenance-free power distribution cabinet according to claim 1, characterized in that: the piston (903) is a cylindrical rubber piston, and the piston (903) is clamped in a cavity of the shell (901) and can slide in the shell (901).

4. The maintenance-free power distribution cabinet according to claim 1, characterized in that: through holes are formed in the top and the bottom of the shell (901), the two ends of the wire (7) are cut off and then are inserted into the shell (901) respectively, and the wires (7) at the two ends are not connected.

5. The maintenance-free power distribution cabinet according to claim 1, characterized in that: the conducting rod (904) is a circular truncated cone metal conducting rod, and the top and the bottom of the conducting rod (904) are respectively and fixedly provided with a limiting clamping block (13).

6. The maintenance-free power distribution cabinet according to claim 1, characterized in that: the wall surface of the shell (901) is provided with an air outlet hole (12), and the air outlet hole (12) is arranged between the thread (10) and the two ends of the lead (7).