Temperature control device for collector ring of generator

Abstract

The utility model provides a temperature control device for a collector ring of a generator, which comprises a mounting rack capable of being mounted on a protective cover, and the top of the mounting rack is provided with a top hole; the air pipe comprises a straight pipe and a side pipe connected to the wall of the straight pipe in a penetrating mode, one end of the air pipe can stretch into the protective cover and face the collecting ring, and the rear end of the side pipe is connected with a draught fan. The infrared temperature detector is provided with an infrared probe; and the detection end of the infrared probe is arranged towards the collecting ring through the inner cavity of the straight pipe and is used for detecting the temperature of the collecting ring. And the PLC is used for collecting temperature information of the infrared temperature detector and can start and stop the fan. Therefore, automatic temperature control of the collecting ring can be realized, the collecting ring can be cooled in time, the running stability of a generator is improved, the service life of the collecting ring is prolonged, in addition, manual heat dissipation operation is omitted, and the labor intensity of workers is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of generators, in particular to a temperature control device for a collector ring of a generator. Background Art

[0002] The rotation of the generator rotor can generate magnetic induction current, which is transmitted outward through multiple sets of collector rings at the end of the rotor. Since the collector rings and carbon brushes are statically connected, a certain amount of friction is generated between the two, and the current passes through the collector rings, carbon brushes and the connection between the two, causing the collector rings and carbon brushes to heat up. However, due to the quality and wear of the carbon brushes, the temperature of the collector rings and carbon brushes will increase. In order to ensure the stable operation of the generator, it is necessary to measure the temperature of the collector rings regularly. Existing staff usually use a handheld temperature gun to measure the temperature regularly. Obviously, this method cannot guarantee frequent measurements. In addition, when the temperature exceeds the standard, it is necessary to manually start cooling measures. Therefore, both the detection and cooling efficiency are relatively low, and the existing methods for cooling the collector rings are not unified. Usually, an external fan is used to blow air to a local area of ​​the collector ring, and such operation is also labor-intensive. In view of this, a generator collector ring cooling air inlet device is provided. Summary of the invention

[0003] The technical solution adopted by the utility model to solve the technical problems in the background technology is:

[0004] A temperature control device for a collector ring of a generator, comprising a mounting frame that can be mounted on a protective cover, wherein a top hole is provided on the top of the mounting frame;

[0005] It also includes an air duct, which includes a straight pipe and a side pipe connected to the wall of the straight pipe, and a fan is connected to the rear end of the side pipe;

[0006] Also included is an infrared temperature detector, which is provided with an infrared probe;

[0007] It also includes a PLC connected to the infrared temperature detector and the fan;

[0008] The straight tube is installed in the top hole, and one end can extend into the protective cover and is arranged toward the collector ring. The infrared probe is installed at the other end of the straight tube and the end is sealed by a cap, and the infrared probe detection end is arranged toward the collector ring through the inner cavity of the straight tube to detect the collector ring temperature.

[0009] Preferably, the infrared temperature detector is connected to the PLC via wireless communication.

[0010] Preferably, a notch is provided on the wall of one end of the straight tube where the infrared probe is provided, the rear end of the infrared probe is snapped into the notch, and the top end of the infrared probe is flush with or lower than the top of the straight tube 2.1.

[0011] Preferably, the outer side of the straight pipe is provided with threads and is installed with two mounting nuts, wherein the two mounting nuts are respectively placed on the inner and outer sides of the mounting frame, and the straight pipe is fixed on the mounting frame by a butt-to-butt manner.

[0012] Preferably, the mounting frame is a sheet metal part, and a rectangular side hole is opened at the front end, and the side tube is placed in the side hole.

[0013] Preferably, the infrared temperature detector is installed on one side of the mounting frame.

[0014] The beneficial effect of the utility model is that the utility model adopts an infrared temperature detector to detect the temperature of the collector ring, and adopts a fan to blow air through a tube to centrally dissipate the heat of the collector ring, obtains the detected collector ring temperature through PLC, and controls the start and stop of the fan according to the set conditions, thereby realizing automatic temperature control of the collector ring, and can cool the collector ring in time, thereby improving the stability of the generator operation, and increasing the service life of the collector ring. In addition, it saves the manual heat dissipation operation and reduces the labor intensity.

[0015] In addition, the temperature probe is placed in the air duct and the detection end is arranged through the tube cavity toward the collector ring, which can make the device structure more compact. The air duct is installed on the mounting frame, and the entire device can be loaded and unloaded by loading and unloading the mounting frame and the protective cover, thereby improving ease of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0017] Figure 1 It is a schematic diagram of the use structure of the temperature control device for the generator collector ring provided by the embodiment of the utility model;

[0018] Figure 2 yes Figure 1 Schematic diagram of the decomposition structure;

[0019] Figure 3 yes Figure 1 Schematic diagram of the structure from the other side;

[0020] Figure 4 It is a schematic diagram of the air duct structure provided by an embodiment of the utility model;

[0021] Figure 5 yes Figure 4 Schematic diagram of the full cross-section of the stroke tube;

[0022] Figure 6 It is a schematic diagram of the control structure of the temperature control device for the generator collector ring provided by the embodiment of the utility model;

[0023] In the figure: 1-mounting frame, 1.1-top hole, 1.2-side hole, 2-air duct, 2.1-straight pipe, 2.11-notch, 2.2-mounting nut, 2.3-side pipe, 2.4-cap, 3-infrared temperature detector, 3.1-infrared probe, 4-fan, a-protective cover, a1-positioning hole, b-collector ring. DETAILED DESCRIPTION

[0024] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the utility model rather than to limit the scope of the utility model. The implementation conditions used in the examples can be further adjusted according to the conditions of the specific manufacturer, and the implementation conditions not specified are usually the conditions in conventional experiments.

[0025] In a specific embodiment, a temperature control device for a generator collector ring is provided, comprising a mounting frame 1, an air duct 2, an infrared temperature detector 3, a fan 4 and a PLC.

[0026] The collector ring end of the existing generator is provided with a protective cover a. In this example, the device is mainly installed on the protective cover a to detect the collector ring temperature and dissipate heat from the collector ring b at high temperature. The specific structure is as follows:

[0027] The mounting frame 1 can be mounted on the protective cover a. In this example, the mounting frame 1 and the protective cover a are preferably detachably connected. In this example, a top hole 1.1 is opened on the top of the mounting frame 1; the air duct 2 is provided with a straight pipe 2.1 and a side pipe 2.3 connected to the wall of the straight pipe 2.1. The straight pipe 2.1 is mounted on the top hole 1.1 and one end can pass through the positioning hole a1 opened on the protective cover a and extend into the protective cover a toward the collector ring b, and the side pipe 2.3 is arranged on the outside of the protective cover a. The positioning hole a1 can be arranged corresponding to the collector ring b, thereby ensuring that the straight pipe 2.1 is accurately aligned with the collector ring b.

[0028] In order to detect the temperature of the collector ring b, the infrared temperature detector 3 is provided with an infrared probe 3.1. In this example, the infrared probe 3.1 is installed at the other end of the straight tube 2.1, that is, placed on the outer end of the protective cover. The detection end of the infrared probe 3.1 is arranged toward the collector ring b through the inner cavity of the straight tube 2.1 to detect the temperature of the collector ring b and transmit it to the infrared temperature detector 3 for data processing.

[0029] In order to achieve heat dissipation for the collector ring b, a fan 4 is connected to the rear end of the side pipe 2.3 in this example. After the fan is started, cooling air can enter the straight pipe 2.1 section through the side pipe 2.3 section, and then blow to the collector ring b to cool it. Since the straight pipe 2.1 and the side pipe 2.3 are completely connected, in order to prevent the cooling air from flowing out from the end of the straight pipe 2.1 where the infrared probe 3.1 is installed, this end is blocked by a cap 2.4. It should be noted that at this time the infrared probe 3.1 is installed in the straight pipe 2.1 and is covered on the top of the infrared probe 3.1. Specifically, the infrared probe 3.1 can be plugged in the pipe, or the pipe wall and the infrared probe can be fixed by installing a set screw, making the structure of the entire device more compact.

[0030] Among them, in order to further facilitate the loading, unloading and fixing of the infrared probe 3.1, a notch 2.11 is opened on the tube wall at the end of the straight tube 2.1, and the rear end of the infrared probe 3.1 is clamped in the notch 2.11, and the top of the infrared probe 3.1 is flush with or lower than the top of the straight tube 2.1, so that the infrared probe 3.1 can be quickly loaded, unloaded and positioned without affecting the installation of the cap 2.4.

[0031] In this example, when the temperature of the collector ring b exceeds the preset value, in order to realize automatic cooling and heat dissipation of the collector ring b, this example also includes PLC, infrared temperature detector 3 and fan 4 are connected, PLC can receive the temperature information detected by the infrared temperature detector 3, and after processing, it can send an instruction to start the fan 4, but when the collector ring temperature is lower than the preset value, PLC can control the fan 4 to stop, so that the automatic temperature control of the collector ring can be realized, and the collector ring can be cooled in time, thereby improving the stability of the generator operation and the service life of the collector ring. In addition, it eliminates the need for manual heat dissipation operations and reduces manual labor intensity.

[0032] On this basis, in order to avoid the complexity of wiring between the temperature detector 3 and the PLC, it is preferred to connect the infrared temperature detector 3 to the PLC wirelessly. Similarly, the control end of the fan 4 can also be connected to the PLC wirelessly, thereby reducing the complexity of the device's wire loading and unloading and improving the mobility of the device installation.

[0033] To further facilitate the adjustment of the installation position of the end of the straight pipe 2.1, a thread is provided on the outside of the straight pipe 2.1, and two installation nuts 2.2 are installed. After installation, the two installation nuts 2.2 are respectively placed on the inner and outer sides of the mounting frame 1, and the straight pipe 2.1 is fixed on the mounting frame 1 by the two nuts facing each other. Therefore, during adjustment, the positions of the two nuts are usually adjusted, and the length of the straight pipe 2.1 extending into the protective cover is adjusted according to the use requirements, so that the distance from the end of the straight pipe 2.1 to the collector ring can be adjusted.

[0034] In order to facilitate the assembly and disassembly of the entire device, the mounting frame 1 is firstly made of sheet metal, with a rectangular side hole 1.2 opened at the front end, and the side pipe 2.3 is placed in the side hole 1.2. In addition, the infrared temperature detector 3 is installed on one side of the mounting frame 1. Therefore, during installation, the device can be disassembled by simply removing the mounting frame 1 from the protective cover. Similarly, after the entire device is assembled, only the mounting frame 1 needs to be placed on the protective cover, thereby improving the convenience of use.

[0035] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the invention through the above description. The technical scope of the invention is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A temperature control device for a generator collector ring, characterized in that: It comprises a mounting frame (1) that can be mounted on a protective cover (a), wherein a top hole (1.1) is provided on the top of the mounting frame (1); It also includes an air duct (2), which includes a straight pipe (2.1) and a side pipe (2.3) connected to the wall of the straight pipe (2.1), and the rear end of the side pipe (2.3) is connected to a fan (4); It also includes an infrared temperature detector (3) which is provided with an infrared probe (3.1); It also includes a PLC connected to the infrared temperature detector (3) and the fan (4); The straight tube (2.1) is installed in the top hole (1.1), and one end of the straight tube (2.1) can extend into the protective cover (a) and is arranged toward the collector ring. The infrared probe (3.1) is installed at the other end of the straight tube (2.1) and the other end is blocked by a cap (2.4). The detection end of the infrared probe (3.1) is arranged toward the collector ring through the inner cavity of the straight tube (2.1) to detect the collector ring temperature.

2. A temperature control device for a generator collector ring according to claim 1, characterized in that: The infrared temperature detector (3) is connected to the PLC via wireless communication.

3. A temperature control device for a generator collector ring according to claim 1, characterized in that: A notch (2.11) is provided on the wall of one end of the straight tube (2.1) where the infrared probe (3.1) is arranged, the rear end of the infrared probe (3.1) is clamped in the notch (2.11), and the top end of the infrared probe (3.1) is flush with or lower than the top of the straight tube (2.1).

4. A temperature control device for a generator collector ring according to claim 1, characterized in that: The straight pipe (2.1) is provided with a thread on the outside and is installed with two mounting nuts (2.2), wherein the two mounting nuts (2.2) are respectively placed on the inside and outside of the mounting frame (1), and the straight pipe (2.1) is fixed on the mounting frame (1) by a butt-jointed manner.

5. A temperature control device for a generator collector ring as claimed in claim 4, characterized in that: The mounting frame (1) is a sheet metal part, and is provided with a rectangular side hole (1.2) at the front side end, and the side tube (2.3) is placed in the side hole (1.2).

6. A temperature control device for a generator collector ring according to claim 1, characterized in that: The infrared temperature detector (3) is installed on one side of the mounting frame (1).

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