A temperature sensor for electric cabinet

Abstract

The utility model relates to the technical field of temperature measuring devices for electric cabinets, and specifically discloses a temperature measuring sensor for electric cabinets, comprising an electric cabinet body and circuit boards arranged in each chamber of the electric cabinet body, a cabinet door is hingedly connected to the front end of the chamber of the electric cabinet body, a front wall of an annular shell is centrally fixed to the rear wall of the cabinet door, a bevel gear ring is fixed to the outer edge of the front wall of the inner cavity of the annular shell, an inner end of a swinging member is rotatably installed at the center of the front wall of the inner cavity of the annular shell, a front wall of a slider is axially slidably clamped to the rear wall of the swinging member, a threaded sleeve is fixedly sleeved between the two side walls of the slider, an infrared temperature measuring module is fixed to the rear wall of the slider, and a probe of the infrared temperature measuring module faces the circuit board, a transmission rod comprises a screw rod whose inner end is rotatably sleeved on the inner end of the swinging member and matches the threaded sleeve, and a bevel gear fixedly sleeved on the outer end of the screw rod and meshed with the bevel gear ring; a power member for driving the swinging member to rotate is arranged in the middle of the cabinet door; so as to facilitate safe, efficient and comprehensive temperature measurement operations on electrical contacts in the electric cabinet.

Description

Technical Field

[0001] The utility model relates to the technical field of electric cabinet temperature measuring devices, in particular to an electric cabinet temperature measuring sensor. Background Art

[0002] The electrical cabinet is mainly used in the process of power generation, transmission, distribution and power conversion of the power system, as well as the control and protection of electrical equipment. The components in the electrical cabinet mainly include control components, frequency converters, circuit breakers, disconnectors, mutual inductors and various protection devices. During the use of the electrical cabinet, since the nodes of its internal contacts and wiring heads are in high voltage and high current working conditions for a long time, the resistance of the contact joints and wiring connections increases due to surface oxidation, corrosion, contact aging, etc., resulting in temperature rise and continuous accumulation of heat, which can easily cause the temperature of the electronic components in the electrical cabinet to gradually rise, leading to electronic component failure and affecting the normal operation of the distribution cabinet. In order to prevent the temperature rise from harming the performance of the electrical cabinet, it is necessary to effectively control the temperature of each electrical contact in the electrical cabinet.

[0003] Traditionally, when measuring the temperature of electrical contacts in an electrical cabinet, the operator needs to open the door of the cabinet and then use an infrared thermometer to perform non-contact temperature measurement of each electrical contact. The live components in the cabinet pose a potential electric shock hazard to the workers. In addition, the existing devices are not convenient for comprehensive detection of the temperature of the electrical contacts inside the cabinet, and the temperature measurement efficiency is low. Utility Model Content

[0004] The utility model designs an electric cabinet temperature measuring sensor to solve the problem that it is difficult to measure the temperature of electrical contacts in an electric cabinet safely, efficiently and comprehensively in the prior art.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a temperature sensor for an electric cabinet, comprising an electric cabinet body and a circuit board arranged at the rear of each chamber of the electric cabinet body, the front ends of each chamber of the electric cabinet body are respectively hinged with cabinet doors, the front wall of the annular shell is centrally fixed on the rear wall of the cabinet door, the bevel gear ring is fixed to the outer edge of the front wall of the inner cavity of the annular shell, the inner end of the swing member is rotatably installed at the center of the front wall of the inner cavity of the annular shell, the front wall of the slider is axially slidably clamped on the rear wall of the swing member, a threaded sleeve is fixedly sleeved between the two side walls of the slider, the infrared temperature measuring module is fixed to the rear wall of the slider, and the probe of the infrared temperature measuring module faces the circuit board, the transmission rod comprises a screw rod whose inner end is rotatably sleeved on the inner end of the swing member and matches the threaded sleeve, and a bevel gear fixedly sleeved on the outer end of the screw rod and meshed with the bevel gear ring; a power member for driving the swing member to rotate is provided in the middle of the cabinet door.

[0006] Preferably, the swinging member includes a slat whose inner end is rotatably installed at the center of the front wall of the inner cavity of the annular shell, and a support block fixed to the inner end of the rear wall of the slat, and the side wall of the support block is provided with an axial hole that matches the rotating sleeve of the inner end of the screw rod, and the slider is axially slidably clamped on the rear wall of the slat.

[0007] Preferably, the power component includes a cylindrical shell whose opening is fixed to the middle of the front wall of the cabinet door, and a servo motor which is sleeved in the inner cavity of the cylindrical shell and the rear end of the power output shaft is fixedly sleeved with the inner end of the slat.

[0008] Preferably, the upper and lower sides of the middle portion of the rear wall of the slat are respectively provided with T-shaped slide rails extending along the axial direction thereof, and the front wall of the slider is provided with a slide groove slidably engaged with the T-shaped slide rail.

[0009] Preferably, an annular guide rail is provided on the periphery of the center of the front wall of the inner cavity of the annular shell, and a groove is provided on the front wall of the slat for sliding engagement with the annular guide rail.

[0010] Preferably, the rear wall of the sliding block is provided with a mounting groove which matches the front end fixed sleeve of the infrared temperature measurement module.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] The utility model relates to an electric cabinet temperature measuring sensor in which an infrared temperature measuring module follows a slider and can simultaneously perform circular rotation and radial movement, so that the infrared temperature measuring module can cover and detect the temperature of electrical contacts and other parts of the entire front wall of a circuit board, thereby facilitating safe, efficient and comprehensive temperature detection of electrical contacts and other parts in the electric cabinet. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0014] Figure 2 It is a three-dimensional structural schematic diagram of the power component of the utility model;

[0015] Figure 3 It is a three-dimensional structural schematic diagram of the swinging member of the utility model;

[0016] Figure 4 It is a three-dimensional structural schematic diagram of the slider of the utility model;

[0017] Figure 5 It is a three-dimensional structural schematic diagram of the transmission rod of the utility model.

[0018] In the figure: 1-electric cabinet body; 1.1-cabinet door;

[0019] 2- Circuit board;

[0020] 3- annular housing; 3.1- annular guide rail;

[0021] 4-bevel gear ring;

[0022] 5-power part; 5.1-cylindrical housing; 5.2-servo motor;

[0023] 6-swinging member; 6.1-slat; 6.1.1-slot; 6.2-support block; 6.2.1-axis hole; 6.3-T-shaped slide rail;

[0024] 7-slider; 7.1-threaded sleeve; 7.2-slideway; 7.3-installation groove;

[0025] 8-Infrared temperature measurement module;

[0026] 9-transmission rod; 9.1-screw; 9.2-bevel gear. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0028] See also Figure 1-5 The utility model provides a technical solution, a temperature sensor for an electric cabinet, comprising an electric cabinet body 1 and a circuit board 2 arranged at the rear of each chamber of the electric cabinet body 1, and the front end of each chamber of the electric cabinet body 1 is hinged with a cabinet door 1.1, wherein the front wall of the circuit board 2 is installed with electrical components and each electrical contact is arranged on the front wall of the circuit board 2.

[0029] The front wall of the annular housing 3 is centrally fixed on the rear wall of the cabinet door 1.1, and an annular guide rail 3.1 is arranged on the periphery of the center of the front wall of the inner cavity of the annular housing 3.

[0030] The bevel gear ring 4 is fixed to the outer edge of the front wall of the inner cavity of the annular housing 3 .

[0031] The swing member 6 comprises a slat 6.1 whose inner end is rotatably mounted at the center of the front wall of the inner cavity of the annular housing 3 and a support block 6.2 fixed to the inner end of the rear wall of the slat 6.1. The side wall of the support block 6.2 is provided with an axial hole 6.2.1. The upper and lower sides of the middle of the rear wall of the slat 6.1 are respectively provided with T-shaped slide rails 6.3 extending along the axial direction thereof. The front wall of the slat 6.1 is provided with a slot 6.1.1 which is slidably engaged with the annular guide rail 3.1.

[0032] The transmission rod 9 comprises a screw rod 9.1 whose inner end is rotatably sleeved in the shaft hole 6.2.1 and a bevel gear 9.2 which is fixedly sleeved on the outer end of the screw rod 9.1 and meshed with the bevel gear ring 4.

[0033] The front wall of the slider 7 is provided with a slide groove 7.2 that is slidably engaged with the T-shaped slide rail 6.3, and a threaded sleeve 7.1 that is threadedly engaged with the screw rod 9.1 is fixedly sleeved between the two side walls of the slider 7. The rear wall of the slider 7 is provided with a mounting groove 7.3. The screw rod 9.1 and the threaded sleeve 7.1 form a screw rod nut structure, so that when the screw rod 9.1 rotates, the slider 7 can be driven to slide through the threaded sleeve 7.1.

[0034] The front end of the infrared temperature measuring module 8 is fixedly mounted in the mounting groove 7.3, and the probe of the infrared temperature measuring module 8 faces the circuit board 2. Among them, the infrared temperature measuring module 8 is an infrared non-contact temperature measuring module, and the output line of the infrared temperature measuring module 8 can solve the problem of rotational connection through a structure in the prior art such as a rotating conductive slip ring. A display screen can also be set on the front wall of the cabinet door 1.1 to display the temperature value detected by the infrared temperature measuring module 8, and an audible and visual alarm device can also be set to send an audible and visual alarm signal when the detected temperature reaches the set standard value.

[0035] The power member 5 comprises a cylindrical shell 5.1 whose opening is fixed to the middle of the front wall of the cabinet door 1.1 and a servo motor 5.2 which is sleeved in the inner cavity of the cylindrical shell 5.1 and whose rear end of the power output shaft is fixedly sleeved with the inner end of the slat 6.1.

[0036] In summary, the servo motor 5.2 drives the swing member 6 to rotate as a whole. When the transmission rod 9 rotates with the swing member 6, the bevel gear 9.2 engages with the bevel gear ring 4 for transmission, thereby causing the screw rod 9.1 to rotate. The rotating screw rod 9.1 will drive the slider 7 to slide radially along the slat 6.1 through the threaded sleeve 7.1, so that the infrared temperature measurement module 8 can cover and detect the temperature of the electrical contacts and other parts of the front wall of the entire circuit board 2.

[0037] In addition, proximity sensors are respectively arranged on the support block 6.2 and the outer end of the slat 6.1, so that when the slider 7 slides close to the proximity sensor, the proximity sensor sends a signal to the control module to reverse the servo motor 5.2, wherein the control module is a control circuit board such as a PLC.

[0038] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electric cabinet temperature sensor, comprising an electric cabinet body (1) and a circuit board (2) arranged at the rear of each chamber of the electric cabinet body (1), wherein the front end of each chamber of the electric cabinet body (1) is hingedly connected to a cabinet door ( 1.1), characterized in that Also includes: An annular housing (3), the front wall of which is centrally fixed on the rear wall of the cabinet door (1.1); A bevel gear ring (4), wherein the bevel gear ring (4) is fixed to the outer edge of the front wall of the inner cavity of the annular housing (3); A swinging member (6), the inner end of which is rotatably mounted on the center of the front wall of the inner cavity of the annular housing (3); A slider (7), the front wall of the slider (7) being axially slidably clamped on the rear wall of the swinging member (6), and a threaded sleeve (7.1) being fixedly sleeved between the two side walls of the slider (7); an infrared temperature measurement module (8), wherein the infrared temperature measurement module (8) is fixed to the rear wall of the sliding block (7), and a probe of the infrared temperature measurement module (8) faces the circuit board (2); A transmission rod (9), the transmission rod (9) comprising a screw rod (9.1) whose inner end is rotatably sleeved on the inner end of the swing member (6) and threadedly sleeved with the threaded sleeve (7.1) and matched, and a bevel gear (9.2) fixedly sleeved on the outer end of the screw rod (9.1) and meshing with the bevel gear ring (4); A power part (5) for driving the swinging part (6) to rotate is provided in the middle of the cabinet door (1.1).

2. The electric cabinet temperature sensor according to claim 1, characterized in that: The swinging member (6) comprises a slat (6.1) whose inner end is rotatably mounted at the center of the front wall of the inner cavity of the annular shell (3) and a support block (6.2) fixed to the inner end of the rear wall of the slat (6.1); the side wall of the support block (6.2) is provided with an axial hole (6.2.1) that is rotatably sleeved and matched with the inner end of the screw rod (9.1); and the slider (7) is axially slidably mounted on the rear wall of the slat (6.1).

3. The electric cabinet temperature sensor according to claim 2, characterized in that: The power member (5) comprises a cylindrical shell (5.1) whose opening is fixed to the middle of the front wall of the cabinet door (1.1) and a servo motor (5.2) which is sleeved in the inner cavity of the cylindrical shell (5.1) and whose rear end of the power output shaft is fixedly sleeved with the inner end of the slat (6.1).

4. The electric cabinet temperature sensor according to claim 2, characterized in that: The upper and lower sides of the middle of the rear wall of the slat (6.1) are respectively provided with T-shaped slide rails (6.3) extending along its axial direction, and the front wall of the slider (7) is provided with a slide groove (7.2) slidably engaged with the T-shaped slide rail (6.3).

5. The electric cabinet temperature sensor according to claim 2, characterized in that: An annular guide rail (3.1) is provided on the periphery of the center of the front wall of the inner cavity of the annular shell (3), and a clamping groove (6.1.1) is provided on the front wall of the slat (6.1) for slidingly clamping with the annular guide rail (3.1).

6. The electric cabinet temperature sensor according to claim 2, characterized in that: The rear wall of the sliding block (7) is provided with a mounting groove (7.3) that is fixedly sleeved and matched with the front end of the infrared temperature measurement module (8).

Images