CN111565530A

CN111565530A - Electric control box

Info

Publication number: CN111565530A
Application number: CN202010309506.6A
Authority: CN
Inventors: 张丁标; 祁江峰; 卢园园
Original assignee: CSSC Huangpu Wenchong Shipbuilding Co Ltd
Current assignee: CSSC Huangpu Wenchong Shipbuilding Co Ltd
Priority date: 2020-04-17
Filing date: 2020-04-17
Publication date: 2020-08-21

Abstract

The invention relates to the technical field of electrical equipment, and discloses an electric cabinet which comprises a box body, a cover body, a heating cable, a controller, a power supply, a temperature sensor, a temperature display and a control switch for controlling whether the heating cable generates heat or not, wherein the box body is rotatably connected with the cover body, the box body is arranged in the box body, at least one package of dehumidifying agent is arranged in the box body, grooves are formed in the periphery of the inner wall of the box body, the heating cable is positioned in the grooves, the controller, the control switch, the power supply and the temperature sensor are all arranged in the box body, the temperature display is arranged on the cover body, the controller is respectively and electrically connected with the control switch, the temperature sensor and the temperature display, and the power supply is respectively and electrically connected with the controller. The electric cabinet provided by the invention can thoroughly solve the problem of icing of the electric cabinet for the polar region low-temperature ship and has the function of drying the electric cabinet.

Description

Electric control box

Technical Field

The invention relates to the technical field of electrical equipment, in particular to an electric cabinet.

Background

With the global warming, the ice layer of the arctic gradually decreases, and arctic navigation has become a hot spot in the international sea affairs community.

At present, an electric cabinet on a ship cannot work in a polar low-temperature environment, and the electric cabinet is easy to freeze, so that an electric appliance element in the electric cabinet breaks down in operation in a low-temperature state. When the ship returns to a normal temperature area from a low temperature area, ice on the electric cabinet melts into water, and elements in the electric cabinet are easy to generate short circuit.

Disclosure of Invention

The purpose of the invention is: the electric cabinet can thoroughly solve the problem of icing of the electric cabinet for the polar region low-temperature ship and has the effect of drying the electric cabinet.

In order to achieve the above object, the present invention provides an electric cabinet, which comprises a cabinet body, a cover body, a heating cable, a controller, a power supply, a temperature sensor, a temperature display and a control switch for controlling whether the heating cable heats or not,

the box body is rotatably connected with the cover body, a box body is arranged in the box body, at least one bag of dehumidifying agent is arranged in the box body, grooves are formed in the periphery of the inner wall of the box body, the heating cable is positioned in the grooves,

the controller the control switch the power with temperature sensor all sets up in the box, temperature monitor installs on the lid, the controller respectively with control switch the temperature sensor with the temperature monitor electricity is connected, the power respectively with the controller the heating cable the temperature sensor with the temperature monitor electricity is connected.

As the preferred scheme, be equipped with binding post in the box, the power pass through the electric wire with binding post electricity is connected, control switch with heating cable all with binding post electricity is connected.

Preferably, the power supply is mounted at the bottom of the outer side of the box body.

Preferably, the bottom of the outer side of the box body is provided with a stuffing box, and one end of the wire penetrates through the stuffing box and is electrically connected with the power supply.

Preferably, the box body comprises a bottom plate and four enclosing plates, the bottom plate is horizontally arranged, the four enclosing plates are arranged on the bottom plate in an enclosing mode, any enclosing plate is fixedly connected with the inner wall of the box body, and a placement position for placing the dehumidifying agent is formed between the bottom plate and each enclosing plate.

As a preferred scheme, the box body is formed by enclosing five steel plates, the thickness of each steel plate is a, and the range of a is more than or equal to 3mm and less than or equal to 5 mm.

Preferably, the box body is wrapped with a layer of heat-insulating material layer.

As a preferred scheme, 4 mounting brackets are arranged outside the box body, and mounting holes are formed in the mounting brackets.

Preferably, a door lock is arranged on the cover body.

Compared with the prior art, the electric cabinet provided by the embodiment of the invention has the beneficial effects that: the groove of the embodiment of the invention can fix the position of the heating cable, and the groove is arranged around the inner wall of the box body, so that the heating cable in the groove can uniformly heat the box body. The power passes through control switch and is connected with the heating cable electricity, and temperature sensor, temperature monitor all are connected with the controller electricity, and when temperature sensor monitored the inside temperature of box, feed back temperature data to the controller, the controller transmitted real-time temperature data for temperature monitor, showed on the lid. The controller can control the on-off of the control switch according to the data of the temperature sensor, and automatically adjust whether the heating cable heats or not. This electric cabinet can be according to the inside temperature of external temperature regulation box for this electric cabinet maintains in a certain temperature range, can prevent that the electric cabinet from freezing, plays deicing, frost-proof effect, is favorable to the electrical components normal work in the electric cabinet. The box body used for containing the dehumidifying agent is arranged in the box body, so that the effect of drying the electric cabinet is achieved, and short-circuit faults of electric elements are avoided.

Drawings

Fig. 1 is a front view of an electric cabinet provided in an embodiment of the present invention;

FIG. 2 is a front view of a housing provided by an embodiment of the present invention;

FIG. 3 is a perspective view of the case and case provided by the embodiment of the present invention;

fig. 4 is a schematic connection diagram of a controller, a power supply, a temperature sensor, a temperature display, and a control switch according to an embodiment of the present invention.

In the figure, 1, a cover body; 2. a box body; 21. an upper side plate; 22. a lower side plate; 23. a left side plate; 24. a right side plate; 25. a rear side plate; 3. a heating cable; 4. a controller; 5. a power source; 6. A temperature sensor; 7. a temperature display; 8. a control switch; 9. a box body; 91. a base plate; 92. Enclosing plates; 10. a groove; 11. a stuffing box; 12. a wiring terminal; 13. a thermal insulation material layer; 14. Mounting a bracket; 15. mounting holes; 16. a door lock; 17. an electric wire; 18. a nameplate.

Detailed Description

The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.

In the description of the present invention, it should be understood that the terms used in the present invention are used in the description of the present invention, and it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. used in the present invention indicate the orientation or positional relationship indicated based on the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

As shown in fig. 1 to 4, an electric cabinet according to a preferred embodiment of the present invention includes a cabinet 2, a cover 1, a heating cable 3, a controller 4, a power supply 5, and a temperature sensor 6, temperature monitor 7 and the control switch 8 that is used for controlling whether heating cable 3 generates heat, box 2 rotationally is connected with lid 1, be equipped with box body 9 in the box 2, box body 9 embeds there is at least one packet of desiccant, the inner wall of box 2 all is equipped with recess 10 all around, heating cable 3 is located recess 10, controller 4, control switch 8, power 5 and temperature sensor 6 all set up in box 2, temperature monitor 7 is installed on lid 1, controller 4 respectively with control switch 8, temperature sensor 6 and temperature monitor 7 electricity are connected, power 5 respectively with controller 4, heating cable 3, temperature sensor 6 and temperature monitor 7 electricity are connected.

Based on the above technical scheme, be equipped with data plate 18 on the lid 1 and mark. The box body 2 is a main body part of the electric cabinet and is used for installing electric control elements and a heating cable 3. The box body 2 is provided with a grounding device (not shown) which is a protection device for grounding of the shell of the electric cabinet. The case 2 includes upper and

lower side plates

21 and 22 horizontally disposed and left, right, and

rear side plates

23, 24, and 25 vertically disposed. The left side plate 23 and the right side plate 24 are arranged oppositely, the top sides of the left side plate 23 and the right side plate 24 are fixedly connected with the upper side plate 21, the bottom sides of the left side plate 23 and the right side plate 24 are fixedly connected with the lower side plate 22, the longitudinal section of the rear side plate 25 is rectangular, and the four sides of the rear side plate are fixedly connected with the upper side plate 21, the lower side plate 22, the left side plate 23 and the rear side plate 25 respectively. The cover 1 is rotatably attached to the left or

right side plate

23, 24. The upper side plate 21, the lower side plate 22, the left side plate 23 and the rear side plate 25 are all provided with grooves 10 along respective length directions, the grooves 10 are used for embedding the heating cables 3, the positions of the heating cables 3 can be fixed, and the heating cables 3 cannot shake randomly. The groove 10 is arranged around the inner wall of the box body 2, so that the heating cable 3 positioned in the groove 10 can uniformly heat the box body 2, and the phenomenon of nonuniform heating is avoided. The heating cable 3 can be at least one electric tracing cable, the number of the heating cables is used for keeping the temperature of the box body 2, and the end of the heating cable 3 electrically connected with the power supply 5 is processed by the tail end of the cable. The power supply 5 may be a battery or an external power supply, and the controller 4 may be a PLC controller. The temperature display 7 may be a display screen for displaying the temperature inside the marine electric control box body 2. The temperature sensor 6 is used to detect the temperature inside the case 2. The power supply 5 is electrically connected with the heating cable 3 through a control switch 8, and the control switch 8 is controlled by the controller 4. The control switch 8 can control whether the power supply 5 is communicated with the heating cable 3, namely, the control switch is used for starting or stopping the heating cable 3 to heat. When the control switch 8 is turned on, the heating cable 3 is energized to start heating. When the control switch 8 is closed, the heating cable 3 is powered off. The temperature sensor 6 detects the temperature inside the case 2 and feeds back temperature data to the controller 4. The controller 4 transmits real-time temperature data to the temperature display 7 so that the temperature inside the cabinet 2 is displayed on the cover 1. The operator can set a program in the controller 4 in advance to set the minimum and maximum values of the temperature. When the controller 4 judges that the temperature in the box body 2 is lower than the preset lowest value, the controller 4 controls the control switch 8 to be switched on, the heating cable 3 is electrified, and heating is started. When the heating is carried out for a certain time and the temperature of the box body 2 is higher than the set maximum value, the controller 4 controls the control switch 8 to be switched off, and the heating cable 3 is switched off. The temperature of the heating cable 3 is used for controlling the box body 2 to be maintained in a constant temperature range, so that the electric cabinet can still keep constant temperature at the temperature of the polar region, the electric cabinet is prevented from freezing, and the deicing and anti-freezing effects are achieved. When the heating cable 3 heats the box body 2, the temperature inside the box body 2 is greatly different from the external temperature, and condensed water is easily hung on the inner wall of the box body 2, so that the humidity in the box body 2 is large, and the operation of electrical elements is influenced. Therefore, the box bodies 9 used for containing the dehumidifying agent are arranged in the box body 2, the number of the box bodies 9 can be multiple, and the box bodies are connected to the inner wall of the box body 2 to achieve the effect of drying the box body 2.

As shown in fig. 2, a connection terminal 12 is provided in the case 2, the power supply 5 (not shown in fig. 2) is electrically connected to the connection terminal 12 through an electric wire 17, and both the control switch 8 and the heating cable 3 are electrically connected to the connection terminal 12. In this embodiment, the controller 4 is electrically connected to the control switch 8, one end of the control switch 8 is connected to the connection terminal 12 through an electric wire 17, and the other end of the control switch 8 is connected to the connection terminal 12 by leading out another electric wire 17. The heating cable 3 is connected to the wiring terminal 12, so that safe, reliable and effective electric connection among the power supply 5, the control switch 8 and the heating cable 3 is realized. When the power supply 5 is a battery, the power supply 5 (not shown in fig. 2) is arranged at the bottom of the outer side of the box body 2, so that the space in the box body 2 is not occupied, the requirement of the electric cabinet on the space can be reduced, the volume of the electric cabinet is reduced as much as possible, and the heat preservation of the box body 2 is facilitated. The bottom of the outer side of the box body 2 is provided with a stuffing box 11, and the stuffing box 11 is used for matching the electric wire 17 on the electric cabinet and sealing the electric cabinet by epoxy resin mortar. The stuffing box 11 has the advantages of simple structure, low manufacturing cost, various forms, firm installation, convenient use, good sealing effect and the like. One end of the wire 17 is electrically connected to the power source 5 through the stuffing box 11, and the other end is connected to the terminal 12. In general, an electric wire 17 enters the interior of the housing 2 from a stuffing box 11 located at the bottom of the housing 2 and is connected to a terminal 12, and the terminal 12 is connected to the controller 4 through another electric wire 17, so that the electric connection between the power supply 5 and the controller 4 is realized. The leading-out wire 17 of the control switch 8 is connected to the wiring terminal 12, and one end of the heating cable 3 is connected to the wiring terminal 12, so that the controller 4 can control whether the heating cable 3 is heated or not through the control switch 8. The power supply 5 may also be electrically connected to the temperature display 7 and the temperature sensor 6 by wires 17.

Specifically, the box 9 includes a bottom plate 91 horizontally disposed and four enclosing plates 92 enclosing the bottom plate 91, and any enclosing plate 92 is fixedly connected with the inner wall of the box 2, so that the box 9 is connected to the inner wall of the box 2. The bottom plate 91 and the enclosing plates 92 form a placing position for placing the dehumidifying agent. In this embodiment, the bottom plate 91 and the surrounding plates 92 are both rectangular parallelepipeds, and the installation position is a space formed by the surrounding of the bottom plate 91 and each surrounding plate 92, and at least one bag of dehumidifying agent can be placed in the space. The staff can take out the desiccant that became invalid from settling the position, change new desiccant, guarantee the dry and comfortable in the box 2, avoid electrical components to take place the short circuit.

Preferably, the box body 2 is formed by enclosing five steel plates, namely the upper side plate 21, the lower side plate 22, the left side plate 23, the right side plate 24 and the rear side plate 25 are all steel plates, the thickness of each steel plate is determined to be a, the range of a is more than or equal to 3mm and less than or equal to 5mm, the thickness of each steel plate is larger than that of the plate of the existing electric cabinet, the better heat preservation effect can be achieved, and heat loss in the box body 2 is reduced. If a is more than 5mm, the thickness of the steel plate is too large, so that the box body 2 is overweight, and the electric cabinet is mainly arranged on a ship and is overweight to the navigation of the ship. In this example, the steel plate has a thickness of 3mm and a protection rating of IP 56.

More preferably, the box 2 is wrapped with a layer of insulating material 13. A layer of heat-insulating material layer 13 is arranged outside the upper side plate 21, the lower side plate 22, the left side plate 23 and the right side plate 24, and the heat-insulating material layer 13 can be made of inorganic heat-insulating materials, such as aerogel felt, glass wool, rock wool and the like.

In addition, 4 mounting brackets 14 are arranged outside the box body 2, the longitudinal section of each mounting bracket 14 is L-shaped, one side of each mounting bracket is fixedly connected to the upper side plate 21 or the lower side plate 22, the other side of each mounting bracket is provided with a mounting hole 15, and the mounting holes 15 can be screw holes. The operator can use the mounting holes 15 on the mounting bracket 14 to mount the electrical cabinet on the vessel.

In addition, the cover body 1 is provided with a door lock 16 which can be a hasp door lock, so that the electric cabinet is prevented from being opened randomly, and the safety of the electric cabinet is improved.

The working process of the invention is as follows: the box 2 and the cover 1 are both cuboid, and the cover 1 is hinged on the left side plate 23 of the box 2 through a hinge. The cover body 1 is provided with a nameplate 18 and three door locks 16. A temperature display 7 is mounted on the outer surface of the cover 1. Four corners of the box body 2 are respectively provided with a mounting bracket 14, and the mounting bracket 14 is provided with a mounting hole 15 for mounting and fixing on a ship. The box body 2 is supported by a steel plate with the thickness of 3mm, and the outer surface of the box body is covered with a layer of heat-insulating material layer 13. The power 5 is installed to the bottom of box 2, and after the one end of electric wire 17 was connected power 5, the packing box 11 from the box 2 bottom got into in the box, and connect on binding post 12, and control switch 8's one end is passed through electric wire 17 and is connected on binding post 12, and another electric wire 17 is drawn forth to the other end and is connected to binding post 12. One end of the heating cable 3 is connected to the wiring terminal 12, and the other end of the heating cable passes through the groove 10 which surrounds the inner wall of the box body 2 for a circle, and finally the tail end of the heating cable is fixed at the bottom of the box body 2. The control switch 8 is electrically connected with the controller 4, and the controller 4 is electrically connected with the temperature sensor 6 and the temperature display 7 respectively. Temperature sensor 6 senses the temperature in box 2 to feed back data to controller 4, controller 4 gives temperature data transmission to temperature display 7, and temperature display 7 shows the temperature. The controller 4 controls the control switch 8 to be turned on or off according to a preset program so that the heating cable 3 is connected to or disconnected from the power supply 5. In order to avoid the too big difference of the inside temperature of box 2 and ambient temperature, lead to humidity in the box 2 too big, be equipped with box body 9 in the box, can be equipped with the desiccant in the box body 9, can guarantee that the inside environment of box 2 is dry.

In summary, the embodiment of the invention provides an electric cabinet, a groove of the electric cabinet can fix the position of a heating cable, and the groove is arranged around the inner wall of a cabinet body, so that the heating cable in the groove can uniformly heat the cabinet body. The power passes through control switch and is connected with the heating cable electricity, and temperature sensor, temperature monitor all are connected with the controller electricity, and when temperature sensor monitored the inside temperature of box, feed back temperature data to the controller, the controller transmitted real-time temperature data for temperature monitor, showed on the lid. The controller can control the on-off of the control switch according to the data of the temperature sensor, and automatically adjust whether the heating cable heats or not. This electric cabinet can be according to the inside temperature of external temperature regulation box for this electric cabinet maintains in a certain temperature range, can prevent that the electric cabinet from freezing, plays deicing, frost-proof effect, is favorable to the electrical components normal work in the electric cabinet. The box body used for containing the dehumidifying agent is arranged in the box body, so that the effect of drying the electric cabinet is achieved, and short-circuit faults of electric elements are avoided.

The above description is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and substitutions can be made without departing from the technical principle of the present invention, and these modifications and substitutions should also be regarded as the protection scope of the present invention.

Claims

1. An electric cabinet is characterized by comprising a cabinet body, a cover body, a heating cable, a controller, a power supply, a temperature sensor, a temperature display and a control switch for controlling whether the heating cable heats or not,

2. The electric cabinet according to claim 1, wherein a terminal is provided in the cabinet, the power supply is electrically connected to the terminal through a wire, and the control switch and the heating cable are electrically connected to the terminal.

3. The electrical cabinet of claim 2, wherein the power supply is mounted at an outer bottom of the cabinet.

4. The electric cabinet according to claim 3, wherein a stuffing box is provided at the bottom of the outer side of the cabinet, and one end of the electric wire is electrically connected to the power supply through the stuffing box.

5. The electric cabinet according to claim 1, wherein the box body comprises a bottom plate arranged horizontally and four surrounding plates arranged on the bottom plate, any surrounding plate is fixedly connected with the inner wall of the box body, and a placement position for placing the dehumidifying agent is formed between the bottom plate and each surrounding plate.

6. The electric cabinet according to claim 1, wherein the cabinet body is formed by enclosing five steel plates, the thickness of the steel plates is a, and the range of a is 3 mm-5 mm.

7. The electric cabinet of claim 1, wherein the box body is wrapped with a layer of insulating material.

8. The electric cabinet according to claim 1, wherein the cabinet body is provided with 4 mounting brackets outside, and the mounting brackets are provided with mounting holes.

9. The electric cabinet according to any one of claims 1 to 8, wherein a door lock is provided on the cover.