Online temperature measuring device for low-voltage cabinet

Abstract

The application provides an online temperature measuring device for a low-voltage cabinet, which comprises a display screen, a temperature measuring probe, a mounting disc, a limiting disc and an adjusting assembly. The display screen is used for being fixed on the outer surface of the cabinet body. The mounting disc is used for being fixed on the inner surface of the cabinet body, and the side of the mounting disc facing the cabinet is provided with a rotating disc, and the rotating disc and the mounting disc are provided with a stop structure. The limiting disc and the rotating disc are connected through a plurality of connecting rods. The adjusting assembly is arranged on the limiting disc and is used for being connected with the temperature measuring probe to adjust and fix the direction of the temperature measuring probe. The temperature measuring probe is electrically connected with the display screen through a wire, the wire is arranged between the rotating disc and the limiting disc and between the two groups of connecting rods, so that the wire can be wound on the outer periphery of the annular structure formed by the plurality of connecting rods when the rotating disc rotates. The online temperature measuring device for the low-voltage cabinet can orderly accommodate the wire, avoid the wire from contacting the electrical elements in the cabinet and improve the stability of the temperature measuring probe in the use stage.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electrical equipment monitoring, and particularly relates to an online temperature measuring device for a low-voltage cabinet. BACKGROUND

[0002] The low-voltage cabinet is also called a low-voltage switch cabinet or a low-voltage power distribution cabinet, and is a part for low-voltage power distribution in a power system and is usually installed in a power distribution room. A common low-voltage cabinet structure comprises a hollow cabinet body and electrical elements arranged in the cabinet body. In order to ensure that the on-site personnel can find the abnormal use of the electrical elements in time and improve the safety in the use stage, the online temperature measurement needs to be performed after the low-voltage cabinet is closed.

[0003] In the prior art, an NTC type thermistor is usually selected as a temperature measuring probe. Specifically, by selecting appropriate resistance and B value and performing insulation treatment on the temperature measuring probe, the voltage withstand requirement of 500 V or below can be met. Meanwhile, a display screen with resistance and B value matched with the probe is selected to meet the temperature digital display requirement, so as to realize the online temperature measurement function.

[0004] The inventor finds that the display screen and the temperature measuring probe usually need to be fixed inside and outside the cabinet respectively, and the detection signal is transmitted by wires between the two. Since the device needs to be adapted to different specifications of the cabinet and installation positions, the wires are usually prepared to be relatively long. Based on this, after the display screen and the temperature measuring probe are fixed, the wires will naturally sag in the cabinet, so that the arrangement of the electrical elements in the cabinet is disordered, and even the wires will come into contact with other electrical elements, so that the temperature measuring probe moves when adjusting other electrical elements due to the traction of the wires, thereby affecting the stability of the temperature measuring probe in the use stage. CONTENT OF THE UTILITY MODEL

[0005] The embodiment of the application provides an online temperature measuring device for a low-voltage cabinet, which aims to orderly store the wires and avoid the contact between the wires and the electrical elements in the cabinet, thereby improving the stability of the temperature measuring probe in the use stage.

[0006] To achieve the above-mentioned purpose, the technical scheme adopted by the application is as follows:

[0007] The application provides an online temperature measuring device for a low-voltage cabinet, which comprises a display screen fixedly arranged on the outer surface of a cabinet body and a temperature measuring probe arranged in the interior of the cabinet body and electrically connected to the display screen through wires. The online temperature measuring device further comprises:

[0008] An installation disc is arranged on the inner surface of the cabinet body. The side of the installation disc facing the interior of the cabinet is provided with a rotating disc rotatably connected to the installation disc, and the rotating disc and the installation disc are provided with a stop structure therebetween.

[0009] A limiting disc is arranged on the side of the rotating disc away from the mounting disc and connected to the rotating disc through a plurality of connecting rods.

[0010] An adjusting assembly is arranged on the limiting disc and connected to the temperature measuring probe to adjust and fix the orientation of the temperature measuring probe.

[0011] The wire is arranged between the rotating disc and the limiting disc and located between the two groups of connecting rods, each group of connecting rods including at least one connecting rod. When the rotating disc rotates, the wire can be wound around the outer periphery of the connecting rods to form a ring structure.

[0012] In a possible implementation, the mounting disc further includes:

[0013] A positioning ring is arranged on the side of the mounting disc facing the cabinet and surrounds the outer periphery of the rotating disc. The positioning ring has a anti-disengagement portion extending radially inwardly thereon, which abuts against the rotating disc to limit the movement of the rotating disc away from the mounting disc.

[0014] In a possible implementation, the stop structure includes:

[0015] A plurality of alignment grooves are arranged on the outer periphery of the rotating disc and spaced along the circumference of the rotating disc.

[0016] A positioning hole is arranged on the positioning ring and penetrates the positioning ring along the radial direction to communicate with any one of the alignment grooves.

[0017] A plug rod is inserted into the positioning hole and adapted to be inserted into the corresponding alignment groove to limit the rotation of the rotating disc.

[0018] In a possible implementation, when the plug rod is inserted into the alignment groove, part of the plug rod is located outside the positioning ring. The plug rod further includes:

[0019] A spring is sleeved on the plug rod and located outside the positioning ring.

[0020] The two ends of the spring are connected to the outer side of the positioning ring and the plug rod, respectively. When the plug rod is withdrawn from the alignment groove, the spring is in an elastic tension state to drive the plug rod to move towards the rotating disc.

[0021] In a possible implementation, the side of the mounting disc facing the cabinet is provided with a plurality of threaded grooves spaced along the circumference thereof.

[0022] The positioning ring is provided with a plurality of through holes corresponding to the plurality of thread grooves, and a connecting bolt is inserted into each through hole and is adapted to be threadedly connected with the thread groove.

[0023] In a possible implementation, the mounting disc further comprises:

[0024] A mounting screw is fixedly connected to a side of the mounting disc away from the cabinet, and the mounting screw is used to pass through the cabinet wall and extend out.

[0025] A mounting nut is threadedly connected to the mounting screw and is used to abut against the outer surface of the cabinet.

[0026] In a possible implementation, the adjusting assembly comprises:

[0027] A protruding block is fixedly connected to a side of the limiting disc away from the rotating disc and is coaxially arranged with the limiting disc; a concave spherical groove is formed in a side of the protruding block away from the limiting disc; and

[0028] A ball is embedded in the concave spherical groove and is adapted to roll relative to the concave spherical groove; the ball has a sleeve extending outward and adapted to allow the temperature measuring probe to be inserted thereinto, and the sleeve has a wire hole communicating with the inside of the sleeve and adapted to allow the wire to pass through.

[0029] In a possible implementation, the wire hole extends along the axial direction of the sleeve to an end surface of the sleeve penetrating through the sleeve away from the ball, and the sleeve further comprises:

[0030] A rubber ring is fixedly sleeved on the end surface of the sleeve away from the ball and is adapted to fill the gap between the temperature measuring probe and the sleeve to limit the movement of the temperature measuring probe relative to the sleeve.

[0031] When the rubber ring is in contact with the sleeve, the rubber ring is further adapted to close the opening of the extending end of the wire hole.

[0032] In a possible implementation, the back surface of the display screen is fixedly provided with a magnet piece adapted to be magnetically attracted to the outer surface of the cabinet.

[0033] In a possible implementation, each connecting rod has an annular groove for embedding the wire.

[0034] The connecting rod is further sleeved with an elastic sleeve ring embedded in the annular groove and in contact with the wire.

[0035] In the embodiment of the application, the temperature in the cabinet (or local temperature, surface temperature of electrical elements) can be monitored online through the temperature measuring probe, and data transmission is performed through the wire, so that the temperature value can be displayed on the display screen for the on-site staff to watch and record.

[0036] When the device is installed, the mounting disc is first fixed to the inner surface of the cabinet body, the display screen is fixed to the outer surface of the cabinet body, then the wire is passed through the rotating disc and the limiting disc, the temperature measuring probe is fixed to the adjusting assembly, finally the rotating disc is rotated and fixed through the stop structure, so that the wire is wound around the outer periphery of the annular structure formed by the plurality of connecting rods, that is, the wire can be orderly stored.

[0037] Compared with the prior art, the online temperature measuring device for the low-voltage cabinet provided in the embodiment can orderly store the wire, avoid contact between the wire and the electrical elements in the cabinet, and improve the stability of the temperature measuring probe in the use stage. BRIEF DESCRIPTION OF DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments or prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor.

[0039] Figure 1 The three-dimensional structure schematic diagram of the online temperature measuring device for the low-voltage cabinet provided in the embodiment of the application is shown in the figure.

[0040] Figure 2 The three-dimensional structure schematic diagram of the display screen used in the embodiment of the application is shown in the figure.

[0041] Figure 3 The local enlarged schematic diagram of the adjusting assembly used in the embodiment of the application in the perspective of explosion is shown in the figure.

[0042] Figure 4 The local enlarged schematic diagram of the adjusting assembly used in the embodiment of the application in the perspective of cross-section is shown in the figure.

[0043] Figure 5 The exploded structure schematic diagram of the mounting disc and related components used in the embodiment of the application is shown in the figure.

[0044] Figure 6 The exploded structure schematic diagram of the mounting disc and the positioning ring used in the embodiment of the application is shown in the figure.

[0045] Figure 7 The local enlarged schematic diagram of the stop structure used in the embodiment of the application in the perspective of cross-section is shown in the figure.

[0046] Figure 8An exploded structural schematic view of the limiting disc used in the embodiments of the present application;

[0047] Figure 9 A three-dimensional structural schematic view of the rotating disc used in the embodiments of the present application;

[0048] Reference signs: 1, display screen; 11, magnet sheet; 2, temperature measuring probe; 3, mounting disc; 31, rotating disc; 32, threaded groove; 33, mounting screw; 34, mounting nut; 4, limiting disc; 41, connecting rod; 411, annular groove; 412, elastic collar; 5, adjusting assembly; 51, protrusion; 511, concave spherical groove; 52, ball; 521, sleeve; 5211, wire hole; 522, rubber ring; 6, wire; 7, stop structure; 71, alignment groove; 72, positioning hole; 73, insertion rod; 731, spring; 8, positioning ring; 81, anti-dropping part; 82, through hole; 83, connecting bolt. DETAILED DESCRIPTION

[0049] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and not to limit the present application.

[0050] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0051] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the present application and simplify the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0052] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0053] Please refer to Figures 1 to 9The low-voltage cabinet on-line temperature measuring device provided by the application will be described. The low-voltage cabinet on-line temperature measuring device comprises a display screen 1, a temperature measuring probe 2, a mounting disc 3, a limiting disc 4 and an adjusting assembly 5.

[0054] The display screen 1 is arranged on the outer surface of the cabinet body. In the embodiment, for the convenience of description, when the display screen 1 is arranged on the outer surface of the cabinet body, the side of the display screen 1 facing the cabinet body is defined as the back surface thereof, and the side of the display screen 1 facing away from the cabinet body is defined as the front surface thereof.

[0055] The temperature measuring probe 2 is arranged in the cabinet body and is electrically connected to the display screen 1 through a wire 6, so that the temperature value detected by the temperature measuring probe 2 is transmitted to the surface of the display screen 1.

[0056] The mounting disc 3 is arranged on the inner surface of the cabinet body. The side of the mounting disc 3 facing the cabinet body is provided with a rotating disc 31 rotatably connected thereto, and the rotating disc 31 and the mounting disc 3 are provided coaxially. The rotating disc 31 and the mounting disc 3 are connected by adjusting the stop structure 7, so as to limit the rotation of the rotating disc 31 relative to the mounting disc 3, and the rotating disc 31 and the mounting disc 3 can be separated, so that the rotating disc 31 can rotate relative to the mounting disc 3.

[0057] The limiting disc 4 is arranged on the side of the rotating disc 31 away from the mounting disc 3, and the limiting disc 4 and the rotating disc 31 are connected through a plurality of connecting rods 41. Specifically, the plurality of connecting rods 41 are arranged along the circumference of the rotating disc 31, and the axis of each connecting rod 41 is parallel to the rotation axis of the rotating disc 31. The two ends of each connecting rod 41 are connected to the rotating disc 31 and the limiting disc 4, respectively.

[0058] The adjusting assembly 5 is arranged on the limiting disc 4 and is connected to the temperature measuring probe 2, so as to adjust and fix the orientation of the temperature measuring probe 2.

[0059] In actual combination, the wire 6 can be arranged between the rotating disc 31 and the limiting disc 4 and located between the two groups of connecting rods 41. Each group of connecting rods 41 comprises at least one connecting rod 41. By adopting this technical scheme, when the rotating disc 31 rotates, the wire 6 can be wound on the outer periphery of the ring structure formed by the plurality of connecting rods 41, so that the wire 6 is kept in a tightened state.

[0060] In the embodiment, the temperature (or local temperature, surface temperature of electrical elements) in the cabinet can be monitored on line by the temperature measuring probe 2, and the data can be transmitted through the wire 6. The temperature value can be displayed on the display screen 1 for the on-site staff to watch and record.

[0061] When the device is installed, the mounting disc 3 is first fixed to the inner surface of the cabinet, the display screen 1 is fixed to the outer surface of the cabinet, then the wire 6 is passed through the rotating disc 31 and the limiting disc 4, the temperature measuring probe 2 is fixed to the adjusting assembly 5, finally the rotating disc 31 is rotated and fixed through the stop structure 7, so that the wire 6 is wound around the outer periphery of the annular structure formed by the plurality of connecting rods 41, and the wire 6 can be orderly stored.

[0062] Compared with the prior art, the online temperature measuring device for the low-voltage cabinet can orderly store the wire 6, avoid contact between the wire 6 and electrical elements in the cabinet, and improve the stability of the temperature measuring probe 2 in the use stage.

[0063] In some embodiments, as shown in Figure 1 The mounting disc 3 further includes a positioning ring 8, which is arranged on the side of the mounting disc 3 facing the cabinet and surrounds the outer periphery of the rotating disc 31.

[0064] In this embodiment, the positioning ring 8 has a anti-disengagement portion 81 extending radially inwardly therefrom, which abuts against the rotating disc 31 to limit the movement of the rotating disc 31 away from the mounting disc 3 and does not interfere with the rotation of the rotating disc 31 relative to the mounting disc 3.

[0065] In some embodiments, as shown in Figure 6 and Figure 7 The stop structure 7 includes a plurality of alignment grooves 71, positioning holes 72 and insertion rods 73.

[0066] The plurality of alignment grooves 71 are all arranged on the outer peripheral surface of the rotating disc 31 and are spaced apart in the circumferential direction of the rotating disc 31.

[0067] The positioning hole 72 is arranged on the positioning ring 8 and penetrates the positioning ring 8 in the radial direction to communicate with any one of the alignment grooves 71; specifically, when the rotating disc 31 rotates relative to the positioning ring 8, the plurality of alignment grooves 71 spaced apart in the circumferential direction of the rotating disc 31 are communicated with the positioning hole 72 in sequence.

[0068] The insertion rod 73 is inserted into the positioning hole 72 and is adapted to be inserted into the alignment groove 71 communicating with the positioning hole 72 to limit the rotation of the rotating disc 31 relative to the positioning ring 8.

[0069] In some embodiments, as shown in Figure 7 When the insertion rod 73 is inserted into the alignment groove 71, part of the insertion rod 73 is located outside the positioning ring 8; based on this, the insertion rod 73 further includes a spring 731, which is sleeved on the insertion rod 73 and is located outside the positioning ring 8.

[0070] After the actual combination, the two ends of the spring 731 are connected with the outer side of the positioning ring 8 and the insertion rod 73 respectively; by adopting this technical scheme, when the insertion rod 73 exits the positioning groove 71, the spring 731 is in an elastic stretching state, so as to be suitable for driving the insertion rod 73 to move towards the turntable 31.

[0071] In some embodiments, as shown in Figure 6 The mounting disc 3 is provided with a plurality of threaded grooves 32 which are arranged at intervals along the circumference of the mounting disc 3 on the side of the mounting disc 3 facing the inside of the cabinet.

[0072] Among them, the positioning ring 8 is provided with a plurality of through holes 82 which are in one-to-one correspondence with the plurality of threaded grooves 32, and a connecting bolt 83 suitable for threaded connection with the threaded groove 32 is inserted in each through hole 82, so as to realize the detachable connection relationship between the mounting disc 3 and the positioning ring 8.

[0073] In some embodiments, as shown in Figure 5 The mounting disc 3 further comprises a mounting screw rod 33 and a mounting nut 34.

[0074] The mounting screw rod 33 is fixedly connected to the side of the mounting disc 3 facing away from the inside of the cabinet, and the mounting screw rod 33 is used to penetrate through the wall surface of the cabinet body and extend out; specifically, during actual installation, the worker can open a reserved hole on the cabinet body, so that when the mounting disc 3 is attached to the inner surface of the cabinet body on the corresponding side, the mounting screw rod 33 can penetrate through the reserved hole and extend out.

[0075] The mounting nut 34 is threadedly connected to the mounting screw rod 33 and is used to abut against the outer surface of the cabinet body to limit the movement of the mounting disc 3 towards the inside of the cabinet.

[0076] In some embodiments, as shown in Figure 3 And Figure 4 The adjusting assembly 5 comprises a protrusion 51 and a ball 52.

[0077] The protrusion 51 is fixedly connected to the side of the limiting disc 4 facing away from the turntable 31, and it is coaxially arranged with the limiting disc 4; in this embodiment, the side of the protrusion 51 facing away from the limiting disc 4 is provided with a concave spherical groove 511.

[0078] The ball 52 is embedded in the concave spherical groove 511 and is suitable for rolling relative to the concave spherical groove 511.

[0079] Among them, the outer wall of the ball 52 has a sleeve 521 extending outward, the sleeve 521 adopts a straight pipe structure with an open end facing away from the ball 52, so as to be suitable for inserting the temperature measuring probe 2. Furthermore, the sleeve 521 has a wire hole 5211 which is in communication with the inside of the sleeve 521 and is suitable for passing the wire 6.

[0080] In this embodiment, the wire hole 5211 has a plurality of wire holes 5211 which are arranged at intervals along the circumference of the sleeve 521.

[0081] In some embodiments, as shown in Figure 3 And Figure 4 The wire hole 5211 extends along the axial direction of the sleeve 521 to the end surface of the sleeve 521 facing away from the ball 52. Based on this, the sleeve 521 further comprises a rubber ring 522, which is fixedly sleeved on the end surface of the sleeve 521 facing away from the ball 52, and is adapted to fill the gap between the temperature measuring probe 2 and the sleeve 521, so that the rubber ring 522 is elastically deformed to limit the movement of the temperature measuring probe 2 relative to the sleeve 521.

[0082] And, when the rubber ring 522 is in contact with the sleeve 521, the rubber ring 522 is also adapted to close the opening of the extension end of the wire hole 5211 to prevent the lead wire 6 from coming off.

[0083] In some embodiments, as shown in Figure 2 The back of the display screen 1 is fixedly provided with a magnet piece 11 for magnetic attraction to the outer surface of the cabinet body, so as to enhance the fixed state of the display screen 1 relative to the cabinet body.

[0084] In some embodiments, as shown in Figure 8 Each connecting rod 41 has an annular groove 411 for embedding the lead wire 6, and the connecting rod 41 is further sleeved with an elastic sleeve ring 412 embedded in the annular groove 411 and in contact with the lead wire 6.

[0085] When the lead wire 6 is wound on the annular structure formed by the plurality of connecting rods 41, the elastic sleeve ring 412 is elastically deformed to form a concave structure, thereby limiting the movement of the lead wire 6 in the wound state.

[0086] The above is only a preferred embodiment of the present application, and does not limit the present application, any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An on-line temperature measuring device for low-voltage cabinets, comprising a display screen arranged fixedly on the outer surface of a cabinet body, and a temperature measuring probe arranged inside the cabinet body and electrically connected to the display screen through a lead wire; characterized in that, The online temperature measuring device further comprises: a mounting disc arranged on the inner surface of the cabinet body, wherein one side of the mounting disc facing the cabinet is provided with a rotating disc connected with the mounting disc through a stop structure; a limiting disc arranged on the side of the rotating disc away from the mounting disc and connected with the rotating disc through a plurality of connecting rods, wherein the connecting rods are arranged along the circumference of the rotating disc, and the two ends of each connecting rod are connected with the rotating disc and the limiting disc, respectively; and an adjusting assembly arranged on the limiting disc and connected with the temperature measuring probe to adjust and fix the orientation of the temperature measuring probe. The wire is arranged between the rotating disc and the limiting disc and between the two groups of connecting rods, and each group of connecting rods comprises at least one connecting rod. When the rotating disc rotates, the wire can be wound around the connecting rods to form an annular structure.

2. The on-line temperature measuring device for low voltage switchgear according to claim 1, characterized in that, The mounting disc further comprises: a positioning ring arranged on the side of the mounting disc facing the cabinet and surrounding the outer periphery of the rotating disc, wherein the positioning ring is provided with a anti-disengagement part extending radially inward, and the anti-disengagement part abuts against the rotating disc to limit the movement of the rotating disc away from the mounting disc.

3. The on-line temperature measuring device for low voltage switchgear according to claim 2, wherein The stop structure comprises: a plurality of alignment grooves arranged on the outer periphery of the rotating disc and spaced along the circumference of the rotating disc; a positioning hole arranged on the positioning ring and penetrating along the radial direction of the positioning ring to communicate with any one of the alignment grooves; and a plug rod inserted into the positioning hole and adapted to be inserted into the corresponding alignment groove to limit the rotation of the rotating disc.

4. The on-line temperature measuring device for low voltage switchgear according to claim 3, wherein When the plug rod is inserted into the alignment groove, part of the plug rod is located outside the positioning ring. The plug rod further comprises: a spring sleeved on the plug rod and located outside the positioning ring; wherein the two ends of the spring are connected with the outer side of the positioning ring and the plug rod, respectively. When the plug rod is withdrawn from the alignment groove, the spring is in an elastic tension state to drive the plug rod to move towards the rotating disc.

5. The on-line temperature measuring device for low voltage switchgear according to claim 2, wherein The side of the mounting disc facing the cabinet is provided with a plurality of screw grooves spaced along the circumference thereof; wherein the positioning ring is provided with a plurality of through holes corresponding to the screw grooves, and each through hole is inserted with a connecting bolt adapted to be screwed with the screw groove.

6. The on-line temperature measuring device for low voltage switchgear according to any one of claims 1 to 5, characterized in that, The mounting disc further comprises: a mounting screw fixedly connected to the side of the mounting disc away from the cabinet, wherein the mounting screw is used to penetrate through the wall of the cabinet and extend out; and a mounting nut threadedly connected to the mounting screw and abutting against the outer surface of the cabinet.

7. The on-line temperature measuring device for low voltage switchgear according to claim 1, wherein The adjusting assembly comprises: a protrusion fixedly connected to the side of the limiting disc away from the rotating disc and coaxially arranged with the limiting disc, wherein the side of the protrusion away from the limiting disc is provided with a concave spherical groove; and a ball embedded in the concave spherical groove and adapted to roll relative to the concave spherical groove, wherein the outer wall of the ball is provided with a sleeve extending outward and adapted to be inserted into the temperature measuring probe, and the sleeve is provided with a wire hole communicating with the inside of the sleeve and adapted to pass the wire.

8. The on-line temperature measuring device for low voltage switchgear according to claim 7, wherein The wiring hole extends along the axial direction of the sleeve to an end face of the sleeve facing away from the ball, and the sleeve further comprises: a rubber ring fixedly sleeved on the end face of the sleeve facing away from the ball and adapted to fill the gap between the temperature measuring probe and the sleeve to limit the movement of the temperature measuring probe relative to the sleeve; wherein the rubber ring is further adapted to close the opening of the extension end of the wiring hole when the rubber ring is in contact with the sleeve.

9. The on-line temperature measuring device for low voltage switchgear according to claim 1, wherein The back of the display screen is fixedly provided with a magnet plate for magnetic attraction on the outer surface of the cabinet body.

10. The on-line temperature measuring device for low voltage switchgear according to claim 1, wherein Each of the connecting rods has an annular groove for embedding a wire; wherein the connecting rod is further sleeved with an elastic sleeve ring embedded in the annular groove and in contact with the wire.

Images