Compact resistor

Abstract

The utility model provides a compact resistor, which comprises an insulating shell and a plurality of resistors arranged in the insulating shell, two sides of the insulating shell are respectively provided with a first connecting seat and a second connecting seat, the outer side of the first connecting seat is provided with a cooling medium inlet, and the outer side of the second connecting seat is provided with a cooling medium outlet. The inner sides of the first connecting seat and the second connecting seat are respectively provided with a plurality of pipeline connectors, the pipeline connectors, opposite in position, of the first connecting seat and the second connecting seat are connected through cooling pipelines, the cooling pipelines are parallel to one another, and the resistors are respectively and correspondingly wound on the surfaces of the cooling pipelines in a spiral shape. The compact resistor has the advantages of scientific design, convenience in installation and good cooling effect.

Description

Technical Field

[0001] The utility model relates to a resistor device, in particular to a compact resistor. Background Art

[0002] A resistor is a current limiting element. When the resistor is connected to a circuit, the current of the circuit can be reduced. A resistor usually includes a resistor and a housing for convenient installation of the resistor. At present, there are many types of resistors on the market, such as: the resistor and the manufacturing method of the resistor disclosed in Chinese patent CN112447346A, a flat winding type discharge resistor disclosed in Chinese patent CN221352478U, etc. A large amount of heat will be generated during the use of the resistor. These resistors are not designed with a resistor heat dissipation mechanism, which is not conducive to the long-term use of the resistor. Chinese patent CN203596770U discloses a resistor, in which multiple through holes are set on each side panel of the resistor box for heat dissipation. However, the heat dissipation capacity of the simple heat dissipation holes is limited, and a mica heat insulation board is also set on the upper side of the resistor, which is even more unfavorable for heat dissipation.

[0003] In order to solve the above problems, people have been seeking an ideal technical solution. Utility Model Content

[0004] The utility model aims to provide a compact resistor in view of the deficiencies in the prior art.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A compact resistor comprises an insulating shell and a plurality of resistors installed inside the insulating shell, wherein a first connecting seat and a second connecting seat are respectively arranged on both sides of the insulating shell, a cooling medium inlet is arranged on the outer side of the first connecting seat, a cooling medium outlet is arranged on the outer side of the second connecting seat, a plurality of pipe interfaces are respectively arranged on the inner sides of the first connecting seat and the second connecting seat, the pipe interfaces of the first connecting seat and the second connecting seat which are located opposite to each other are connected through a cooling pipe, the cooling pipes are parallel to each other, and the resistors are respectively spirally wound on the surface of the cooling pipe.

[0007] The ends of each resistor are respectively provided with a connecting portion, which includes an insulating connecting portion and a conductive connecting portion. The insulating connecting portion is fixedly connected to the cooling pipe, and the conductive connecting portion is connected to the resistor.

[0008] The cooling medium inlet and the cooling medium outlet are respectively provided with connecting cylinders, an annular connecting plate is provided at the outer end of the connecting cylinder, and a plurality of connecting holes are evenly provided on the annular connecting plate.

[0009] Any two adjacent cooling pipes are separated by an insulating partition, and a wire hole is arranged on the insulating partition, and the wire hole is located close to the connecting part.

[0010] The insulating shell also includes a front side plate, a rear side plate, a top plate and a bottom plate, and the front side plate, the rear side plate, the top plate, the bottom plate are connected with the first connecting seat and the second connecting seat to form a closed shell.

[0011] The front side plate and the rear side plate are both rectangular plates, the bottom plate and the top plate are L-shaped plates, the transverse part of the L-shaped plate is connected to the first connecting seat and the second connecting seat, and the vertical part of the L-shaped plate is evenly provided with a plurality of connecting holes.

[0012] A wire harness through hole is arranged in a lateral portion of the top plate or / and the bottom plate.

[0013] Compared with the prior art, the utility model has the beneficial effect that the utility model provides a compact resistor, in which the resistor is spirally wound on the surface of a cooling tube, and a cooling medium is introduced into the cooling tube to cool the resistor, thereby avoiding the failure to dissipate heat in time and excessive temperature during use; during specific use, the connecting wire harness enters the internal electrical group of the insulating shell from the wire harness through hole of the top plate and / or the bottom plate; the top plate and the bottom plate are L-shaped plates, and connection holes are arranged in the vertical part thereof, so as to facilitate fixing the insulating shell to other equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the utility model.

[0015] Figure 2 It is a structural schematic diagram of the utility model with the front side plate removed.

[0016] In the figure: 1. front side plate; 2. top plate; 3. wiring harness through hole; 4. bottom plate; 5. first connecting seat; 6. second connecting seat; 7. connecting tube; 8. annular connecting plate; 9. cooling pipe; 10. resistor; 11. insulating partition; 12. connecting part. DETAILED DESCRIPTION

[0017] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0018] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. "Installed", "provided with", "connected", etc. can adopt conventional means in the prior art, such as: integral setting, snap-on installation, welding connection, adhesive connection, bolt connection, etc. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances, and suitable connection, setting or installation methods can be selected in the prior art.

[0019] like Figure 1-2 As shown, a compact resistor includes an insulating shell and a plurality of resistors 10 installed inside the insulating shell, a first connecting seat 5 and a second connecting seat 6 are respectively arranged on both sides of the insulating shell, a cooling medium inlet is arranged on the outer side of the first connecting seat 5, a cooling medium outlet is arranged on the outer side of the second connecting seat 6, a plurality of pipe interfaces are respectively arranged on the inner sides of the first connecting seat 5 and the second connecting seat 6, the pipe interfaces of the first connecting seat 5 and the second connecting seat 6 which are located opposite to each other are connected by a cooling pipe 9, the cooling pipes 9 are parallel to each other, and the resistors 10 are respectively spirally wound around the surface of the cooling pipe 9. The cooling medium inlet is connected to the cooling medium delivery pipeline, and the cooling medium is injected into the cooling pipe. The cooling medium outlet is connected to the cooling medium recovery pipeline, and the cooling medium flows from the cooling medium outlet into the cooling medium recovery pipeline for recovery. The cooling medium recovery pipeline and the cooling medium delivery pipeline can use a delivery pump to provide flow power and use conventional pipelines for delivery; the cooling medium can be cooling water or cooling gas; the cooling pipe can be a straight pipe or a serpentine pipe. In this embodiment, a straight pipe is used. If the specific heat capacity of the cooling medium is large, a serpentine pipe can also be selected as needed to improve the heat exchange efficiency.

[0020] In one embodiment, the ends of each resistor 10 are respectively provided with a connecting portion 12, the connecting portion 12 includes an insulating connecting portion 12 and a conductive connecting portion 12, the insulating connecting portion 12 is fixedly connected to the cooling tube 9, and the conductive connecting portion 12 is connected to the resistor 10. Specifically, the insulating connecting portion can be a connecting ring, the connecting ring is fixedly connected to the cooling tube, and a common fixed connection method can be adopted, such as welding, etc. The conductive connecting portion can be a connecting column for wiring, and other structures convenient for wiring in the prior art can also be adopted, such as a wiring piece.

[0021] In one embodiment, the cooling medium inlet and the cooling medium outlet are respectively provided with a connecting tube 7, and an annular connecting plate 8 is provided at the outer end of the connecting tube 7, and a plurality of connecting holes are evenly provided on the annular connecting plate 8. There are multiple cooling pipes, and multiple cooling medium input pipes and cooling medium output pipes are also provided correspondingly, arranged in a row.

[0022] One end of the cooling medium input pipe and the cooling medium output pipe connected to each cooling pipe is inserted into the connecting tube for easy connection. Multiple cooling medium output pipes and multiple cooling medium input pipes can also be respectively sleeved with connecting tubes and provided with connecting holes. The connecting holes of the two connecting tubes can be connected by bolts. The cooling pipe can be connected to the cooling medium input pipe and the cooling medium output pipe by common flanges.

[0023] In one embodiment, any two adjacent cooling tubes 9 are separated by an insulating partition 11, and a wire hole is provided on the insulating partition 11, and the wire hole is located near the connecting portion 12. During use, the cable can pass through the wire hole to facilitate the connection of the resistor. During the installation of the resistor, several resistors can be selected and used in series through the cable.

[0024] In one embodiment, the insulating shell also includes a front side plate 1, a rear side plate, a top plate 2 and a bottom plate 4. The front side plate 1, the rear side plate, the top plate 2, the bottom plate 4 are connected with a first connecting seat 5 and a second connecting seat 6 to form a closed shell, which is convenient for protecting the resistor inside the shell.

[0025] In one of the embodiments, the front side plate 1 and the rear side plate are both rectangular plates, the bottom plate 4 and the top plate 2 are L-shaped plates, the transverse part of the L-shaped plate is connected to the first connecting seat 5 and the second connecting seat 6, and the vertical part of the L-shaped plate is evenly provided with a plurality of connecting holes, so as to facilitate fixing the insulating shell to a certain mounting frame by bolts.

[0026] In one embodiment, a wire harness through hole 3 is provided in the lateral portion of the top plate 2 or / and the bottom plate 4 to facilitate the wire harness to enter the interior of the insulating housing.

[0027] The above embodiments can be combined with each other.

[0028] In the utility model, the resistor is spirally wound on the surface of the cooling tube, and a cooling medium is passed through the cooling tube to cool the resistor to avoid the failure to dissipate heat in time and excessive temperature during use; during specific use, the connecting wire harness enters the internal electrical group of the insulating shell from the wire harness through hole of the top plate and / or the bottom plate; the top plate and the bottom plate are L-shaped plates, and the vertical part thereof is provided with connecting holes, which is convenient for fixing the insulating shell to other equipment.

[0029] It should be noted that the insulating shell, cooling tube, insulating partition, insulating connection part, etc. in the utility model are all made of common insulating materials, such as mica, glass, ceramics, etc., and the connection circuit of the resistor adopts the circuit in the prior art. The utility model does not improve the circuit and will not be repeated.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A compact resistor, comprising an insulating housing and a plurality of resistors installed inside the insulating housing, characterized in that: A first connecting seat and a second connecting seat are respectively arranged on both sides of the insulating shell, a cooling medium inlet is arranged on the outer side of the first connecting seat, a cooling medium outlet is arranged on the outer side of the second connecting seat, a plurality of pipe interfaces are respectively arranged on the inner sides of the first connecting seat and the second connecting seat, and the pipe interfaces of the first connecting seat and the second connecting seat which are relatively positioned are connected through cooling pipes, the cooling pipes are parallel to each other, and the resistors are respectively spirally wound on the surface of the cooling pipe.

2. The compact resistor according to claim 1, characterized in that: The ends of each resistor are respectively provided with a connecting portion, which includes an insulating connecting portion and a conductive connecting portion. The insulating connecting portion is fixedly connected to the cooling pipe, and the conductive connecting portion is connected to the resistor.

3. The compact resistor according to claim 2, characterized in that: The cooling medium inlet and the cooling medium outlet are respectively provided with connecting cylinders, an annular connecting plate is provided at the outer end of the connecting cylinder, and a plurality of connecting holes are evenly provided on the annular connecting plate.

4. The compact resistor according to claim 3, characterized in that: Any two adjacent cooling pipes are separated by an insulating partition, and a wire hole is arranged on the insulating partition, and the wire hole is located close to the connecting part.

5. The compact resistor according to claim 4, characterized in that: The insulating shell also includes a front side plate, a rear side plate, a top plate and a bottom plate, and the front side plate, the rear side plate, the top plate, the bottom plate are connected with the first connecting seat and the second connecting seat to form a closed shell.

6. The compact resistor according to claim 5, characterized in that: The front side plate and the rear side plate are both rectangular plates, the bottom plate and the top plate are L-shaped plates, the transverse part of the L-shaped plate is connected to the first connecting seat and the second connecting seat, and the vertical part of the L-shaped plate is evenly provided with a plurality of connecting holes.

7. The compact resistor according to claim 6, characterized in that: A wire harness through hole is arranged in a lateral portion of the top plate or / and the bottom plate.

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