Resistance box for detecting load capacity of power distribution cabinet

Abstract

The utility model provides a resistance box for detecting the load capacity of a power distribution cabinet, which comprises a box body, and one side of the box body is connected with a plurality of binding posts which are respectively connected with a wire inlet end and a load end; the bobbin resistor unit is mounted in the box body, two ends of the bobbin resistor unit are connected with the circuit breaker unit, and a winding resistor in the bobbin resistor unit is set according to the requirement of a load; and the temperature monitoring unit is arranged on the box body and is used for displaying and adjusting through the temperature control module. According to the utility model, the resistor with fixed capacity is installed in the box body, so that the current detected by the power distribution cabinet connected to the box body through the resistor box is constant, the purpose of rapidly detecting the load capacity of the power distribution cabinet is achieved, in addition, a plurality of cooling fans are configured in the box body, equipment damage caused by heating after a plurality of winding resistors are gathered is avoided, and the service life of the power distribution cabinet is prolonged. The service life of the resistance box is prolonged.

Description

Technical Field

[0001] The utility model relates to the field of electricity, in particular to the technical field of power distribution cabinets, and specifically is a resistance box used for detecting the load capacity of a power distribution cabinet. Background Art

[0002] The load detection of existing conventional distribution cabinets is usually carried out through a load tester. However, different distribution cabinets have different load characteristics and requirements. The use of ordinary testers increases the detection time and cost on the one hand, and cannot realize the on-site debugging function, which does not meet the requirements of speed and convenience. On the other hand, ordinary testers cannot adapt to certain characteristic requirements, or distribution cabinets with smaller requirements, which will lead to a waste of resources. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a resistance box for detecting the load capacity of a distribution cabinet, so as to solve the difficulties of the prior art.

[0004] In order to achieve the above-mentioned purpose and other related purposes, the utility model provides a resistance box for detecting the load capacity of a power distribution cabinet, comprising:

[0005] A box body 1, one side of the box body 1 is connected to a plurality of terminals 2 respectively connected to the incoming line end and the load end;

[0006] A wire-wound resistor unit, wherein the wire-wound resistor unit is installed in a box 1, and both ends are connected to a circuit breaker unit. The wire-wound resistor 3 in the wire-wound resistor unit is set according to the load requirements;

[0007] The temperature monitoring unit is installed on the box body 1 and is displayed and adjusted through the temperature control module 4.

[0008] According to a preferred embodiment, a side hanging ear 5 and a handle 6 are also installed on one side of the box body 1 close to the temperature control module 4 .

[0009] According to a preferred embodiment, the wirewound resistor unit comprises:

[0010] A winding resistor 3, wherein the winding resistor 3 is arranged in multiple groups, and the resistance capacity of the multiple winding resistors 3 is different to cooperate with the test of the distribution cabinet load;

[0011] Front and rear support frames 7, both ends of each of the winding resistors 3 are respectively installed in the box body 1 through the front and rear support frames 7, and the four sides thereof are not in contact with the box body 1.

[0012] According to a preferred embodiment, the front and rear support frames 7 include a horizontal support frame connecting each winding resistor 3, and further the horizontal support frame.

[0013] According to a preferred solution, each of the winding resistors 3 is connected to a respective circuit breaker 8 .

[0014] According to the preferred solution, the wire-wound resistor 3 is a combination of four 1Kw resistors and two 0.5Kw resistors.

[0015] According to a preferred solution, each of the wire-wound resistors 3 is arranged in a staggered manner.

[0016] According to a preferred embodiment, the temperature monitoring unit comprises:

[0017] A cooling fan 9 is installed on a side surface close to the box body 1, and cooling holes 10 are correspondingly opened on the box body 1;

[0018] Temperature control module 4, each of the cooling fans 9 is electrically connected to the temperature control module 4;

[0019] The front hot runner partition 11 is installed between the cooling fan 9, the temperature control module 4, the circuit breaker 8 and the winding resistor 3, and the two ends are bolted to the inner side of the box body 1 to isolate the temperature control module 4, the circuit breaker 8 and the winding resistor 3.

[0020] According to the preferred solution, the circuit breaker 8 is installed in the box body 1 through the micro-breaker mounting plate 12, and is arranged up and down with the temperature control module 4.

[0021] According to a preferred solution, cooling fans 9 are installed at both the front and rear ends of the wire-wound resistor 3 .

[0022] According to a preferred embodiment, a rear hot runner partition 13 is further installed in the box body 1 on a side close to the plurality of terminal posts 2 .

[0023] According to a preferred solution, a buzzer 14 is also electrically connected to the temperature control module 4 .

[0024] The utility model installs a fixed-capacity resistor in a box body, so that the current detected by the distribution cabinet connected to the box body through the resistor box is constant, so as to achieve the purpose of quickly detecting the load capacity of the distribution cabinet. In addition, a plurality of cooling fans are arranged in the box body to avoid damage to the equipment caused by heat generated by the aggregation of a plurality of winding resistors, thereby improving the service life of the resistor box.

[0025] The best embodiment of the present invention will be described in more detail below in conjunction with the accompanying drawings so that the features and advantages of the present invention can be easily understood. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The display is a three-dimensional structural schematic diagram of the utility model;

[0027] Figure 2 Shown is a three-dimensional schematic diagram of the internal structure of the utility model;

[0028] Figure 3 Shown is a partial three-dimensional structural schematic diagram of the utility model;

[0029] Figure 4 Shown is an enlarged schematic diagram of the three-dimensional structure of the wire-wound resistor unit in the present invention;

[0030] Description of symbols

[0031] 1. Box body; 2. Multiple terminal posts; 3. Winding resistor; 4. Temperature control module; 5. Side hanging ears; 6. Handle; 7. Front and rear support frames; 8. Circuit breaker; 9. Cooling fan; 10. Cooling holes; 11. Front hot runner interlayer; 12. Micro-breaker mounting plate; 13. Rear hot runner interlayer; 14. Buzzer. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solution and advantages of the technical solution of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described in conjunction with the drawings of the specific embodiments of the utility model. The same figure marks in the drawings represent the same parts. It should be noted that the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the described embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Compared with the embodiments shown in the drawings, feasible implementations within the scope of protection of the present invention may have fewer components, other components not shown in the drawings, different components, differently arranged components, or differently connected components, etc. In addition, two or more components in the drawings may be implemented in a single component, or a single component shown in the drawings may be implemented as multiple separate components.

[0034] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by persons with ordinary skills in the field to which the utility model belongs. The words "first", "second" and similar words used in the specification and claims of the utility model patent application do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, words such as "one" or "one" do not necessarily indicate quantity restrictions. Words such as "include" or "comprise" mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0035] The utility model proposes a resistance box for detecting the load capacity of a distribution cabinet, which is used in a load testing process. The utility model does not limit the type of distribution cabinet, but the structure of the resistance box for detecting the load capacity of a distribution cabinet is particularly suitable for load testing of a distribution cabinet.

[0036] In general, the resistance box for detecting the load capacity of the power distribution cabinet proposed in the present invention mainly includes a box body 1, a winding resistance unit, and a temperature monitoring unit. Figure 1 , which shows the arrangement relationship of the box 1, the wound resistor unit, and the temperature monitoring unit.

[0037] In order to achieve the purpose of convenient and fast load testing, the problem in the background technology that the load detection of existing conventional distribution cabinets is usually carried out by a load testing machine, however, different distribution cabinets have different load characteristics and requirements. The use of ordinary testing machines, on the one hand, increases the detection time and cost, and cannot realize the on-site debugging function, and cannot meet the requirements of speed and convenience. On the other hand, ordinary testing machines cannot adapt to certain characteristic requirements, or distribution cabinets with smaller requirements, which will lead to the problem of waste of resources. For this reason, in the technical solution provided in this embodiment, a fixed-capacity resistor is installed in the box 1, so that the current detected by the distribution cabinet connected to the box 1 through the resistor box is constant, so as to achieve the purpose of quickly detecting the load capacity of the distribution cabinet. In addition, a plurality of cooling fans are arranged in the box 1 to avoid damage to the equipment due to heat caused by the aggregation of multiple winding resistors, thereby improving the service life of the resistor box.

[0038] like Figure 1 and Figure 2As shown, one side of the box body 1 is connected with a plurality of terminals 2 which are respectively connected with the incoming line end and the load end, and the other side displays the internal temperature and controls and adjusts it through the temperature control module 4. A side hanging ear 5 and a handle 6 are also installed on the side of the box body 1 close to the temperature control module 4, so as to facilitate the overall movement of the box body 1 to the vicinity of the distribution cabinet where load detection is required.

[0039] As mentioned above, in order to provide enough winding resistors 3 in the limited space of the box 1 to meet the load capacity detection requirements of the distribution cabinet produced by the existing company, that is, to realize that the winding resistors 3 in the winding tube resistance unit are set according to the load requirements, the winding resistors 3 are set in multiple groups in the box 1, usually a combination of 4 1Kw and 2 0.5Kw winding resistors 3 are used, and each winding resistor 3 is staggered to maximize the use of space; secondly, since each winding resistor 3 is connected to its own circuit breaker 8, when in use, the different resistance capacities between the multiple winding resistors 3 can be used to cooperate with the distribution cabinet load test. During the test, the circuit breaker 8 is switched to achieve a combination of winding resistors 3 with sufficient capacity.

[0040] On this basis, in order to avoid the intervals between multiple winding resistors 3 being too small, and to avoid the intervals between the winding resistors 3 and the box body 1 being too small, the two ends of each of the winding resistors 3 are respectively installed in the box body 1 through the front and rear support frames 7, and the front and rear support frames 7 include horizontal support frames connecting each winding resistor 3, and further the horizontal support frames, so as to achieve the effect that the multiple winding resistors 3 are not in contact with the box body 1 on all sides, and can also provide sufficient air duct space for the operation of the cooling fan 9.

[0041] It should be specifically explained that, corresponding to the heat dissipation effect of multiple winding resistors 3, the temperature monitoring unit is configured to include a heat dissipation fan 9, a temperature control module 4, a front hot runner interlayer 11 and a rear hot runner interlayer 13, wherein heat dissipation fans 9 are installed at both ends of the front and rear of the winding resistor 3, the heat dissipation fan 9 is located between the side of the box body 1 and the winding resistor 3, and a corresponding heat dissipation hole 10 is opened on the box body 1. Secondly, in order to ensure that the heat dissipation fan 9 can have a sufficient heat dissipation effect on the multiple winding resistors 3, the heat dissipation fan 9, the front hot runner interlayer 11 and the rear hot runner interlayer 13 are used to achieve the effect of surrounding the winding resistor 3. Specifically, the front hot runner interlayer 11 is installed between the heat dissipation fan 9, the temperature control module 4, the circuit breaker 8 and the winding resistor 3, and the two ends are bolted to the inner side of the box body 1 to isolate the temperature control module 4 and the circuit breaker 8 from the winding resistor 3, and a rear hot runner interlayer 13 is also installed in the box body 1 on the side close to the multiple terminal posts 2.

[0042] like Figure 3As shown, the circuit breaker 8 is installed in the box 1 through the micro-breaker mounting plate 12, and is arranged up and down with the temperature control module 4. The temperature control module 4 can monitor the temperature around the circuit breaker 8 in real time to avoid the tripping phenomenon caused by the heating of multiple winding resistors 3 affecting the operation of the circuit breaker 8. Furthermore, in this embodiment, each cooling fan 9 is electrically connected to the temperature control module 4, and the working efficiency of the cooling fan 9 can be adjusted in real time through the temperature control module 4 to avoid excessive or insufficient cooling effect. Furthermore, the temperature control module 4 is also electrically connected to a buzzer 14. When the temperature is too high, the operator is promptly reminded to suspend cooling and maintenance.

[0043] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed in the present invention shall still be covered by the claims of the present invention.

Claims

1. A resistance box for detecting the load capacity of a power distribution cabinet, characterized in that: include: A box (1), one side of the box (1) being connected to a plurality of terminals (2) respectively connected to an incoming line terminal and a load terminal; a wire-wound resistor unit, the wire-wound resistor unit being installed in the box (1), the two ends of the wire-wound resistor unit being connected to a circuit breaker unit, the wire-wound resistor (3) in the wire-wound resistor unit being set according to load requirements; a temperature monitoring unit, the temperature monitoring unit being installed on the box (1) and being displayed and adjusted through a temperature control module (4); The wire-wound resistor unit comprises: a wire-wound resistor (3), wherein the wire-wound resistor (3) is arranged in a plurality of groups, and the resistance capacity of the plurality of wire-wound resistors (3) is different to match the load test of the power distribution cabinet; a front and rear support frame (7), wherein the two ends of each of the wire-wound resistors (3) are respectively installed in the box body (1) through the front and rear support frames (7), and the four sides thereof are not in contact with the box body (1); and each of the wire-wound resistors (3) is connected to a respective circuit breaker (8).

2. The resistance box for detecting the load capacity of a power distribution cabinet according to claim 1, characterized in that: The temperature monitoring unit comprises: a cooling fan (9), the cooling fan (9) being installed on a side surface close to the box body (1), and a corresponding cooling hole (10) being opened on the box body (1); a temperature control module (4), each of the cooling fans (9) being electrically connected to the temperature control module (4); and a front hot runner partition (11), the front hot runner partition (11) being installed between the cooling fan (9), the temperature control module (4), the circuit breaker (8) and the winding resistor (3), and having two ends bolted to the inner side of the box body (1), so as to isolate the temperature control module (4), the circuit breaker (8) and the winding resistor (3).

3. The resistance box for detecting the load capacity of a power distribution cabinet according to claim 2, characterized in that: Cooling fans (9) are installed at both the front and rear ends of the wire-wound resistor (3).

4. The resistance box for detecting the load capacity of a power distribution cabinet according to claim 3, characterized in that: A rear hot runner partition (13) is also installed in the box body (1) on a side close to the plurality of terminal posts (2).

5. The resistance box for detecting the load capacity of a power distribution cabinet according to claim 4, characterized in that: The temperature control module (4) is also electrically connected to a buzzer (14).

Images