Online temperature measuring equipment for wireless transmission high-voltage cable branch box

Abstract

The utility model discloses an on-line temperature measurement device for a wireless transmission high-voltage cable branch box, and relates to the technical field of high-voltage cable temperature measurement, and the device comprises a supporting assembly which comprises a mounting plate, a supporting frame, and a fixing plate. The device further comprises a temperature measuring assembly. The temperature measuring assembly comprises a supporting rod, a movable rod, a central processing unit, a connecting plate, a temperature measuring sensor, a fixed sheet, a contact pad and a placing frame; the supporting rod is fixed in the supporting frame, and the movable rod is movably connected to the supporting rod. The central processing unit is fixed on the supporting frame; the placing frame is fixed to the end of the movable rod, the temperature measuring sensor is located in the placing frame, and the placing frame is a ceramic plate provided with a rectangular groove; the connecting plates are fixed to the end of the movable rod and located on the two sides of the temperature measuring sensor. The connecting plate is slidably connected with a fixing sheet, and a contact pad is pasted on the fixing sheet. The distance between the temperature measurement sensor and the cable can be kept the same during temperature measurement, and meanwhile, the detection accuracy of the temperature measurement sensor is prevented from being influenced by the change of the environment temperature.

Description

Technical Field

[0001] The utility model relates to the technical field of high-voltage cable temperature measurement, in particular to an online temperature measurement device for a wireless transmission high-voltage cable branch box. Background Art

[0002] High-voltage cable branch boxes are widely used for node connections in 10KV cable systems. They are the main electrical equipment for gathering and tapping cables after they exit the switch cabinet. High-voltage cable branch boxes require online temperature measurement of cables during operation, and the power transmission status of the cables is determined based on the temperature changes of the incoming cables. When the power transmission status of the cables is abnormal, the temperature of the incoming cables will rise, so the temperature sensor needs to be fixed on the incoming cables.

[0003] Temperature sensors are usually glued or bundled to the cables entering the box, leaving a gap between the temperature sensor and the cable. Since the distance between the temperature sensor and the cable cannot be guaranteed to be the same each time the temperature sensor is fixed, there will be errors in the temperature detected by the temperature sensor. The temperature sensor is also easily affected by changes in ambient temperature, resulting in the inability to accurately detect temperature changes in the cable. Utility Model Content

[0004] The embodiment of the present application provides an online temperature measurement device for a wireless transmission high-voltage cable branch box, which solves the problem in the prior art that when the temperature sensor is fixed, the distance between the temperature sensor and the cable cannot be guaranteed to be the same, resulting in errors in the temperature detected by the temperature sensor. In addition, the temperature sensor is easily affected by changes in ambient temperature, resulting in an inability to accurately detect temperature changes of the cable. This achieves the goal of maintaining the same distance between the temperature sensor and the cable when measuring the temperature of the cable, and at the same time avoids the accuracy of the temperature sensor detection being affected by changes in ambient temperature.

[0005] The embodiment of the present application provides an online temperature measurement device for a wireless transmission high-voltage cable branch box, including a support assembly, the support assembly including a mounting plate, a support frame, and a fixing plate, the mounting plate being fixed to the branch box, and the fixing plate being fixed to the support frame;

[0006] It also includes a temperature measuring component, which is distributed around the cable;

[0007] The temperature measurement assembly includes a support rod, a movable rod, a central processing unit, a connecting plate, a temperature sensor, a fixing plate, a contact pad and a placement frame;

[0008] The support rod is fixed in the support frame, and the movable rod is movably connected to the support rod;

[0009] The central processing unit is fixed on the support frame;

[0010] The placement frame is fixed to the end of the movable rod, and the temperature sensor is located in the placement frame. The placement frame is a ceramic plate with a rectangular groove.

[0011] The connecting plate is fixed to the end of the movable rod, and the connecting plate is located on both sides of the temperature sensor;

[0012] A fixing piece is slidably connected to the connecting plate, and a contact pad is adhered to the fixing piece.

[0013] Furthermore, the connecting plate is fixed to the end of the movable rod through a bracket;

[0014] The bracket is fitted with the side wall of the placement frame;

[0015] The bracket is a rectangular plate, and the bracket is located on both sides of the temperature sensor;

[0016] The height of the bracket is greater than the height of the temperature sensor, and a gap is left between the bracket and the cable.

[0017] Furthermore, the connecting plate is an arc plate, and a guide rail is fixed on the connecting plate;

[0018] The guide rail is located on the side of the connecting plate close to the cable;

[0019] The guide rail is a T-shaped rod, and the fixing plate is slidably connected to the connecting plate through the guide rail;

[0020] A limiting block is fixed to the end of the connecting plate;

[0021] The limiting block is a rectangular block, and the limiting block can limit the moving range of the fixing piece.

[0022] Furthermore, the bracket is detachably fixed to the end of the movable rod via a connecting pin;

[0023] The connecting pin is a spring pin, and the connecting pin is fixed to the bottom of the bracket.

[0024] Furthermore, the mounting plate is a rectangular plate, and a rectangular opening is provided at the center of the mounting plate;

[0025] The support frame is welded and fixed in the rectangular hole at the center of the mounting plate;

[0026] The mounting plate is fixedly connected to the branch box by bolts, the support frame is located outside the branch box, and the incoming cables pass through the support frame;

[0027] The fixing plate is fixedly connected to the supporting frame by bolts.

[0028] Furthermore, a fixing frame is fixedly connected to the upper side of the support frame;

[0029] The fixing frame is two L-shaped rods parallel to each other, and the fixing frame is located outside the branch box;

[0030] The fixing frame is used to fix the central processing unit.

[0031] Furthermore, the fixing plate is provided with a circular hole for the cable to pass through;

[0032] The fixing plate is rotatably connected to a connecting pipe, and the connecting pipe and the fixing plate are connected by threads;

[0033] A fastening bolt is spirally connected to the connecting pipe, and the fastening bolt fixes the cable in the connecting pipe.

[0034] Furthermore, the movable rod is fixed to the support rod via a connecting ring;

[0035] The connecting ring is fixed to the bottom of the movable rod;

[0036] A circular hole is provided at the bottom of the movable rod, and the support rod extends into the circular hole on the movable rod;

[0037] A spring is fixed at the bottom of the circular hole on the movable rod, and the other end of the spring is fixed to the end of the supporting rod.

[0038] Furthermore, the contact pad is an arc piece, and the contact pad is an elastic rubber pad.

[0039] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

[0040] The cable passes through the middle of the support frame, and the contact pad on the fixing plate contacts the cable, thereby fixing the cable between the temperature measuring components. After the contact pad contacts the cable, the temperature sensor located at the end of the movable rod and the cable maintain the same distance, which effectively solves the problem in the prior art that the distance between the temperature sensor and the cable cannot be guaranteed to be the same when the temperature sensor is fixed, and the temperature sensor is easily affected by changes in ambient temperature, resulting in an inability to accurately detect the temperature changes of the cable. This achieves the goal of maintaining the same distance between the temperature sensor and the cable during temperature measurement, while avoiding the impact of changes in ambient temperature on the accuracy of temperature sensor detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a schematic diagram of the main structure of an online temperature measuring device for a wireless transmission high-voltage cable branch box of the utility model;

[0042] Figure 2 This is a side sectional structural diagram of an online temperature measuring device for a wireless transmission high-voltage cable branch box according to the present invention;

[0043] Figure 3This is a schematic diagram of the specific structure of the temperature measurement component of an online temperature measurement device for a wireless transmission high-voltage cable branch box of the utility model;

[0044] Figure 4 This is a schematic structural diagram of the connection relationship between the support rod and the movable rod of an online temperature measuring device for a wireless transmission high-voltage cable branch box of the utility model;

[0045] Figure 5 This is a schematic structural diagram of the connection relationship between the bracket and the movable rod of an online temperature measuring device for a wireless transmission high-voltage cable branch box of the utility model;

[0046] Figure 6 This is a schematic diagram of the connection relationship between the central processor and the support frame of an online temperature measurement device for wireless transmission high-voltage cable branch box of the utility model;

[0047] Figure 7 This is a schematic structural diagram of the connection relationship between the fixing piece and the connecting plate of an online temperature measuring device for a wireless transmission high-voltage cable branch box of the utility model;

[0048] Figure 8 This is a schematic structural diagram of the positional relationship between a placement frame and a temperature measurement sensor of a temperature measurement component of an online temperature measurement device for a wireless transmission high-voltage cable branch box of the present invention.

[0049] In the figure: 100, support assembly; 101, mounting plate; 102, support frame; 103, connecting pipe; 104, fixing plate; 105, connecting ring; 106, fastening bolt; 107, fixing bracket;

[0050] 200, temperature measuring component; 201, support rod; 202, movable rod; 203, central processing unit; 204, connecting plate; 205, temperature sensor; 206, fixing plate; 207, spring; 208, bracket; 209, connecting pin; 210, guide rail; 211, contact pad; 212, placement frame. DETAILED DESCRIPTION

[0051] In order to facilitate the understanding of the present invention, the present application will be described more comprehensively with reference to the relevant drawings below; the drawings show preferred embodiments of the present invention, but the present invention can be implemented in many different forms and is not limited to the embodiments described herein; on the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thoroughly and comprehensively understood.

[0052] It should be noted that the terms “vertical”, “horizontal”, “up”, “down”, “left”, “right” and similar expressions used in this document are for illustrative purposes only and do not represent the only implementation method.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this invention pertains; the terms used herein in the specification of this invention are for the purpose of describing specific embodiments only and are not intended to limit this invention; the term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0054] like Figures 1 to 8 As shown, the present application proposes an online temperature measuring device for a wireless transmission high-voltage cable branch box, including a support assembly 100, the support assembly 100 includes a mounting plate 101, a support frame 102 and a fixing plate 104, the mounting plate 101 is fixed on the branch box, the fixing plate 104 is fixed on the support frame 102, and a round hole for the cable to pass through is opened on the fixing plate 104; it also includes a temperature measuring assembly 200, the temperature measuring assembly 200 is distributed around the cable, and the cable passes through the middle position of the temperature measuring assembly 200; the temperature measuring assembly 200 includes a support rod 201, a movable rod 202, a central processing unit 203, a connecting plate 204, a temperature sensor 205, a fixing plate 206, a placement frame 212 and a contact pad 211; the support rod 201 is fixed in the support frame 102, the movable rod 202 is movably connected to the support rod 201, and the movable rod 202 and the support rod 201 are used to The temperature sensor 205 is fixed on the side wall of the support frame 102; the central processing unit 203 is fixed on the support frame 102; the placement frame 212 is fixed on the end of the movable rod 202, and the temperature sensor 205 is located in the placement frame 212. The placement frame 212 is a ceramic plate with a rectangular groove. The temperature sensor 205 is located in the rectangular groove on the placement frame 212. The placement frame 212 has a low thermal conductivity and will not be affected when the external temperature changes. When the contact pad 211 contacts the cable, the distance between each temperature sensor 205 and the cable is the same; the connecting plate 204 is fixed on the end of the movable rod 202, and the connecting plate 204 is located on both sides of the temperature sensor 205; a fixing plate 206 is slidably connected to the connecting plate 204; the fixing plate 206 is used to fix the contact pad 211, and the contact pad 211 can fit the cable, thereby fixing the cable between the temperature measuring components 200.

[0055] Preferably, the central processing unit 203 has a data processing module and a transmission module. The central processing unit 203 collects the signals detected by the temperature sensor 205, processes the signals through the data processing module, and then transmits the processed signals to the outside through the transmission module. The monitoring personnel judge the power transmission status of the cable based on the received signals.

[0056] Preferably, the connecting plate 204 is fixed to the end of the movable rod 202 through a bracket 208; the bracket 208 is a rectangular plate, the bracket 208 is located on both sides of the temperature sensor 205, and the bracket 208 and the side wall of the placement frame 212 are in contact with each other; the height of the bracket 208 is greater than the height of the temperature sensor 205, and a gap is left between the bracket 208 and the cable, so that the height of the fixing plate 206 fixed on the bracket 208 is greater than the height of the temperature sensor 205. When the contact pad 211 and the cable are in contact with each other, a sufficient gap can be left between the temperature sensor 205 and the cable, and the temperature sensor 205 detects the operating status of the cable according to the change of the surface temperature of the cable.

[0057] Preferably, the bracket 208 is a ceramic plate having a low thermal conductivity, so that when the external temperature of the bracket 208 changes, the temperature of the bracket 208 does not change significantly, thereby avoiding affecting the temperature sensor 205.

[0058] Preferably, the placement seat is fixed to the end of the movable rod 202 by a buckle, so that the placement seat can be removed from the movable rod 202. When the temperature sensor 205 is damaged, it is convenient to replace the temperature sensor 205.

[0059] Preferably, the connecting plate 204 is an arc plate, and the curvature of the connecting plate 204 is the same as the curvature of the fixing plate 206. A guide rail 210 is fixed on the connecting plate 204; the guide rail 210 is located on the side of the connecting plate 204 close to the cable; the guide rail 210 is a T-shaped rod, which can fix the fixing plate 206 on the connecting plate 204, and the fixing plate 206 is slidably connected to the connecting plate through the guide rail 210. When the cable passes through the temperature measuring component 200, the cable can push the fixing plate 206 to slide on the connecting plate 204. After the cable is fixed, the position of the cable can also be slightly adjusted. A limit block is fixed at the end of the connecting plate 204; the limit block is a rectangular block, and the limit block can limit the movement range of the fixing plate 206.

[0060] Preferably, the bracket 208 is detachably fixed to the end of the movable rod 202 by a connecting pin 209, and the bracket 208 and the connecting plate 204 are fixedly connected. The bracket 208 can be removed from the movable rod 202, and then the connecting plate 204 can be replaced. Different connecting plates 204 are fixed with fixing plates 206 of different curvatures. When measuring the temperature of cables of different diameters, the appropriate fixing plate 206 can be replaced according to the diameter of the cable.

[0061] Preferably, the connecting pin 209 is a spring 207 pin, and the connecting pin 209 is fixed to the bottom of the bracket 208.

[0062] Preferably, the mounting plate 101 is a rectangular plate with a rectangular opening at the center of the mounting plate 101; the support frame 102 is welded and fixed in the rectangular hole at the center of the mounting plate 101; the mounting plate 101 is fixed to the branch box by bolts, and the support frame 102 is located outside the branch box.

[0063] Preferably, the fixing plate 104 is fixedly connected to the supporting frame 102 by bolts.

[0064] Preferably, a fixing frame 107 is fixedly connected to the upper side of the support frame 102; the fixing frame 107 is two L-shaped rods parallel to each other, and the fixing frame 107 is located outside the branch box; the fixing frame 107 is used to fix the central processing unit 203, and a storage module is provided in the central processing unit 203, so that the central processing unit 203 can record the signal monitored by the temperature sensor 205. The central processing unit 203 is slidably connected to the fixing frame 107, and the staff can remove the central processing unit 203 from the support frame 102, which is convenient for the staff to retrieve the monitoring data stored in the central processing unit 203.

[0065] Preferably, a circular hole is opened on the fixing plate 104 for the cable to pass through, and the cable enters the support frame 102 through the circular hole on the fixing plate 104; a connecting tube 103 is rotatably connected to the fixing plate 104, and the connecting tube 103 and the fixing plate 104 are connected by threads, so that the cable can pass through the connecting tube 103; a fastening bolt 106 is spirally connected to the connecting tube 103, and the fastening bolt 106 fixes the cable in the connecting tube 103. By rotating the connecting tube 103, the cable can be tightened, so that the cable located in the support frame 102 is straightened.

[0066] Preferably, the movable rod 202 is fixed to the support rod 201 through the connecting ring 105; the connecting ring 105 is fixed to the bottom of the movable rod 202; a circular hole is opened at the bottom of the movable rod 202, and the support rod 201 extends into the circular hole on the movable rod 202, so that the movable rod 202 can slide on the support rod 201; a spring 207 is fixed to the bottom of the circular hole on the movable rod 202, and the other end of the spring 207 is fixed to the end of the support rod 201. When measuring the temperature of cables with different diameters, the movable rod 202 slides on the support rod 201, and the distance between the temperature measuring components 200 can be adjusted according to the diameter of the cable, so that the cable can pass through the middle of the temperature measuring component 200, and thus the temperature of cables with different diameters can be measured.

[0067] Preferably, the contact pad 211 is an arc piece, so that the contact pad 211 can fit the cable. The contact pad 211 is an elastic rubber pad, which can increase the friction between the contact pad 211 and the cable to prevent the cable from falling from between the temperature measurement components 200.

[0068] In actual use, an online temperature measurement device for a wireless transmission high-voltage cable branch box according to an embodiment of the present application:

[0069] First, extend the cable from the connecting tube 103 on the fixing plate 104 into the support frame 102, so that the cable passes through the middle of the temperature measuring component 200, and under the action of the spring 207, push the movable rod 202 to slide toward the cable, so that the fixing piece 206 at the end of the movable rod 202 moves toward the cable, and the contact pad 211 on the fixing piece 206 contacts the cable, thereby fixing the cable between the temperature measuring components 200. After the contact pad 211 contacts the cable, the temperature sensor 205 at the end of the movable rod 202 and the cable are kept the same. The temperature sensor 205 detects the power transmission status of the cable according to the change in the surface temperature of the cable. The connecting plates 204 and the brackets 208 on both sides of the temperature sensor 205 are less affected by the temperature change when the external ambient temperature changes, so that the temperature sensor 205 will not be affected by the external temperature change. The same distance is maintained between the temperature sensor 205 and the cable during temperature measurement, and the accuracy of the detection of the temperature sensor 205 is avoided from being affected by the change in ambient temperature, so that the temperature sensor 205 can accurately detect the temperature change of the cable.

[0070] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. A person skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. An online temperature measurement device for a wireless transmission high-voltage cable branch box, comprising a support assembly (100), wherein the support assembly (100) comprises a mounting plate (101), a support frame (102), and a fixing plate (104), wherein the mounting plate (101) is fixed to the branch box, and the fixing plate (104) is fixed to the support frame (102); It is characterized by: It also includes a temperature measuring component (200), wherein the temperature measuring component (200) is distributed around the cable; The temperature measurement component (200) comprises a support rod (201), a movable rod (202), a central processing unit (203), a connecting plate (204), a temperature sensor (205), a fixing plate (206), a contact pad (211) and a placement frame (212); The support rod (201) is fixed in the support frame (102), and the movable rod (202) is movably connected to the support rod (201); The central processing unit (203) is fixed on the support frame (102); The placement frame (212) is fixed to the end of the movable rod (202), and the temperature sensor (205) is located in the placement frame (212). The placement frame (212) is a ceramic plate with a rectangular groove. The connecting plate (204) is fixed to the end of the movable rod (202), and the connecting plate (204) is located on both sides of the temperature sensor (205); A fixing plate (206) is slidably connected to the connecting plate (204), and a contact pad (211) is adhered to the fixing plate (206).

2. The online temperature measurement device for a wireless transmission high-voltage cable branch box according to claim 1, characterized in that: The connecting plate (204) is fixed to the end of the movable rod (202) via a bracket (208); The bracket (208) is a rectangular plate, and the bracket (208) is located on both sides of the temperature sensor (205); The bracket (208) and the side wall of the placement frame (212) are fitted together; The height of the bracket (208) is greater than the height of the temperature sensor (205), and a gap is left between the bracket (208) and the cable.

3. The online temperature measurement device for a wireless transmission high-voltage cable branch box according to claim 1, characterized in that: The connecting plate (204) is an arc plate, and a guide rail (210) is fixed on the connecting plate (204); The guide rail (210) is located on a side of the connecting plate (204) close to the cable; The guide rail (210) is a T-shaped rod, and the fixing plate (206) is slidably connected to the connecting plate via the guide rail (210); A limiting block is fixed at the end of the connecting plate (204); The limiting block is a rectangular block, and the limiting block can limit the movement range of the fixing plate (206).

4. The online temperature measurement device for a wireless transmission high-voltage cable branch box according to claim 2, characterized in that: The bracket (208) is detachably fixed to the end of the movable rod (202) via a connecting pin (209); The connecting pin (209) is a spring (207) pin, and the connecting pin (209) is fixed to the bottom of the bracket (208).

5. The online temperature measurement device for a wireless transmission high-voltage cable branch box according to claim 1, characterized in that: The mounting plate (101) is a rectangular plate, and a rectangular opening is provided at the center of the mounting plate (101); The support frame (102) is welded and fixed in a rectangular hole at the center of the mounting plate (101); The mounting plate (101) is fixedly connected to the branch box by bolts, the support frame (102) is located outside the branch box, and the incoming cable passes through the support frame (102); The fixing plate (104) is fixedly connected to the supporting frame (102) by bolts.

6. The online temperature measurement device for a wireless transmission high-voltage cable branch box according to claim 5, characterized in that: A fixing frame (107) is fixedly connected to the upper side of the support frame (102); The fixing frame (107) is two L-shaped rods parallel to each other, and the fixing frame (107) is located outside the branch box; The fixing frame (107) is used to fix the central processing unit (203).

7. The online temperature measurement device for a wireless transmission high-voltage cable branch box according to claim 5, characterized in that: The fixing plate (104) is provided with a circular hole for the cable to pass through; The fixing plate (104) is rotatably connected to a connecting pipe (103), and the connecting pipe (103) and the fixing plate (104) are connected via threads; A fastening bolt (106) is spirally connected to the connecting pipe (103), and the fastening bolt (106) fixes the cable in the connecting pipe (103).

8. The online temperature measurement device for a wireless transmission high-voltage cable branch box according to claim 1, characterized in that: The movable rod (202) is fixed on the support rod (201) via a connecting ring (105); The connecting ring (105) is fixed to the bottom of the movable rod (202); A circular hole is provided at the bottom of the movable rod (202), and the support rod (201) extends into the circular hole on the movable rod (202); A spring (207) is fixed at the bottom of the circular hole on the movable rod (202), and the other end of the spring (207) is fixed to the end of the support rod (201).

9. The online temperature measurement device for a wireless transmission high-voltage cable branch box according to claim 1, characterized in that: The contact pad (211) is a circular arc piece, and the contact pad (211) is an elastic rubber pad.

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