Cable plug voltage type temperature measurement sensor special for ring main unit

Abstract

The utility model discloses a special cable plug voltage type temperature measurement sensor for a ring main unit, which comprises an insulation plug, one end of the insulation plug is fixedly connected with a convex column, the other end of the insulation plug is provided with an installation groove, the installation groove is a circular groove and is in a step shape, and a temperature measurement assembly is arranged in the installation groove. According to the utility model, the temperature change at the insulation plug and the cable joint can be monitored in real time, so that the heating condition in the cable can be accurately mastered, the fault hidden danger is effectively eliminated, the modular design is adopted, the temperature measurement assembly can be disassembled and overhauled without the help of an additional tool when a fault occurs, the overhaul efficiency is greatly improved, and the maintenance cost is reduced. And meanwhile, the damage to the equipment structure is also effectively avoided.

Description

TECHNICAL FIELD

[0001] The utility model belongs to temperature sensor technical field, especially relate to a cable plug voltage type temperature sensor special for ring main unit. BACKGROUND

[0002] With the improvement of power grid technical level, more and more medium voltage equipment adopts cable connection, especially in plateau area, more and more adopts inflatable switch cabinet. Corresponding ring main unit, cable branch box, inflatable switch cabinet and other medium voltage equipment are more and more. The cable fault that power supply department faces is more and more, and the heating problem caused by cable insulation and poor contact accounts for more than 80% of the number of faults. The partial discharge caused by insulation damage and poor contact of wire core can all be manifested as heating of fault point, and the heating condition of relevant parts can be mastered by monitoring, so temperature sensor is needed.

[0003] At present, there are many kinds of temperature sensors on the market, such as a temperature sensor with publication number CN214277235U disclosed on China patent network, but there are some defects and deficiencies to be improved: (1) in order to improve the insulation level, a large amount of insulation material is often used, which has good insulation level and strong heat insulation capacity, and the existing temperature sensor can only monitor the temperature change of the outside of cable and cable accessories, so it is difficult to master the actual fault hidden danger of cable inside; (2) the structure of the existing temperature sensor is relatively complex, and it is designed as a whole, when a fault occurs, the temperature measuring element needs to be disassembled with the help of tools for maintenance, which is very inconvenient, and also easy to cause damage to the equipment structure. Therefore, in view of the above problems, the utility model provides a cable plug voltage type temperature sensor special for ring main unit, which has important significance. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of cable plug voltage type temperature sensor special for ring main unit, by insulation plug, this temperature sensor can be installed in the cable joint of ring main unit, when, by temperature measuring component can real-time monitoring temperature change at insulation plug and cable joint, so it can accurately master the heating condition inside cable, effectively eliminate fault hidden danger;Adopt modular design, when a fault occurs, temperature measuring component can be disassembled and maintained without the help of additional tools, not only greatly improve the efficiency of maintenance, but also effectively avoid damage to the equipment structure, and the above problems in the background art are solved.

[0005] To solve the above technical problems, the utility model is realized by the following technical scheme:

[0006] The utility model discloses a special cable plug voltage type temperature measurement sensor of ring net case, including insulating plug, one end of insulating plug is fixedly connected with the column, and the other end of insulating plug is seted up with the installation groove, the installation groove is circular groove, and it is stair -like, and be provided with temperature measurement subassembly in the installation groove,

[0007] Temperature measurement subassembly includes temperature measurement cylinder, temperature measurement cylinder is cylindrical, and it is stair -like, and one end of temperature measurement cylinder is installed temperature measurement seat, temperature measurement seat is circular, and one side is installed with sensor body, and the other side of temperature measurement seat is seted up with recess, the groove wall of recess is fixedly connected with handle.

[0008] Further, the large end and the small end of the temperature measurement cylinder have outer diameters corresponding to the inner diameters of the large end and the small end of the installation groove, respectively, and the outer wall of the large end of the temperature measurement cylinder and the inner wall surface of the large end of the installation groove are respectively engraved with external threads and internal threads that cooperate with each other.

[0009] Further, the temperature measurement seat has a diameter equal to the outer diameter of the small end of the temperature measurement cylinder, and one side of the temperature measurement seat is fixedly connected with a plurality of insertion rods. The insertion rods are located on one side of the sensor body and are arranged in a circular array. The small end edge surface of the temperature measurement cylinder is provided with a plurality of insertion grooves. The cross sections of the insertion grooves and the insertion rods are circular, have the same number, and have equal diameters. The center of each insertion groove and the center of each insertion rod correspond one-to-one.

[0010] Further, the rod body of each insertion rod is sleeved with an anti-skid sleeve, and the surface of the anti-skid sleeve is engraved with a chevron anti-skid pattern.

[0011] Further, the edge surface of the end of the insulating plug away from the column is provided with a sealing ring.

[0012] Further, the end of the insulating plug close to the column is circular, and a plurality of positioning blocks are fixedly connected to the circular edge of the end.

[0013] Further, the column is hexagonal, and the side wall surface of the column is engraved with a chevron anti-skid pattern.

[0014] The utility model discloses a special cable plug voltage type temperature measurement sensor of ring net case, including insulating plug, one end of insulating plug is fixedly connected with the column, and the other end of insulating plug is seted up with the installation groove, the installation groove is circular groove, and it is stair -like, and be provided with temperature measurement subassembly in the installation groove,

[0015] (1) the special cable plug voltage type temperature measurement sensor of ring net case in the utility model can install the temperature measurement sensor in the cable joint of ring net case through the insulating plug when using, temperature measurement subassembly can monitor the temperature change of insulating plug and cable joint at this moment in real time, can accurately grasp the heating condition in the cable, and effectively prevents the hidden danger of failure,

[0016] (2) The cable plug voltage type temperature measuring sensor special for ring main unit in the utility model has modular design, when a fault occurs, the temperature measuring assembly can be disassembled and overhauled without the help of additional tools, the efficiency of overhauling is greatly improved, and the damage to the equipment structure is effectively avoided.

[0017] Of course, it is not necessary for any product implementing the utility model to achieve all the advantages mentioned above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the following will briefly introduce the drawings needed to be used for the embodiment description, obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0019] Figure 1 It is a structure schematic view of the cable plug voltage type temperature measuring sensor special for ring main unit of the utility model;

[0020] Figure 2 It is a front view of the cable plug voltage type temperature measuring sensor special for ring main unit of the utility model;

[0021] Figure 3 It is a front structure schematic view of the insulation plug in the utility model;

[0022] Figure 4 It is a back structure schematic view of the insulation plug in the utility model;

[0023] Figure 5 It is a structure schematic view of the temperature measuring assembly in the utility model;

[0024] Figure 6 It is a back structure schematic view of the temperature measuring cylinder in the utility model;

[0025] Figure 7 It is a front structure schematic view of the temperature measuring seat in the utility model;

[0026] Figure 8 It is a back structure schematic view of the temperature measuring seat in the utility model;

[0027] Figure 9 It is a structure schematic view of the sealing ring in the utility model.

[0028] In the drawings, the component list represented by each sign is as follows:

[0029] 1, insulating plug; 2, protruding column; 3, mounting groove; 4, temperature measuring cylinder; 5, temperature measuring seat; 6, sensor body; 7, groove; 8, handle; 9, insertion rod; 10, insertion slot; 11, anti-skid sleeve; 12, sealing ring; 13, positioning block. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0031] In the description of the utility model, it should be understood that the terms "relative", "one end", "internal", "transverse", "end", "two ends", "two sides", "front", "one end surface", "the other end surface" and the like indicate the orientation or positional relationship, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the indicated components or elements must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0032] Please refer to Figures 1-9 As shown in the figure, the utility model discloses a special cable plug voltage type temperature measuring sensor for ring main unit, which comprises an insulating plug 1, the insulating plug 1 is injection molded by insulating materials such as plastic, one end of the insulating plug 1 is fixedly connected with a protruding column 2, the other end of the insulating plug 1 is provided with a mounting groove 3, the mounting groove 3 is a circular groove and is in a stepped shape, and a temperature measuring assembly is arranged in the mounting groove 3.

[0033] The temperature measuring assembly comprises a temperature measuring cylinder 4, the temperature measuring cylinder 4 is in a cylindrical shape and is in a stepped shape, one end of the temperature measuring cylinder 4 is provided with a temperature measuring seat 5, the temperature measuring seat 5 is circular, one side of the temperature measuring seat 5 is provided with a sensor body 6, the other side of the temperature measuring seat 5 is provided with a groove 7, the groove wall of the groove 7 is fixedly connected with a handle 8, the sensor body 6 is the prior art, which is integrated with a temperature sensing element, a data acquisition and processing module, a data transmission module and a power module, the sensor body 6 adopts high-voltage electric field induction power supply and wireless communication technology, can carry out digital processing on the temperature signal of the temperature measuring point, and actively sends the temperature signal to a temperature receiving end through digital wireless, the receiving end can upload the temperature of each temperature measuring point received to a communication management machine, the communication management machine is uploaded to a server platform through Ethernet, so that the data can be analyzed and plotted, and monitoring can be carried out at the same time.

[0034] The outer diameter of the large end and the small end of the temperature measuring cylinder 4 corresponds to the inner diameter of the large end and the small end of the mounting groove 3 respectively, and the outer wall of the large end of the temperature measuring cylinder 4 and the inner wall surface of the large end of the mounting groove 3 are respectively engraved with external threads and internal threads that cooperate with each other. The temperature measuring cylinder 4 can be fixed in the insulating plug 1 by threaded connection, and is attached to the inner wall of the mounting groove 3. By rotating the temperature measuring cylinder 4, the temperature measuring cylinder 4 and the entire temperature measuring assembly can be taken out of the mounting groove 3.

[0035] The diameter of the temperature measuring seat 5 is equal to the outer diameter of the small end of the temperature measuring cylinder 4, and the temperature measuring seat 5 is fixedly connected with a plurality of insertion rods 9 on one side. The insertion rods 9 are located on one side of the sensor body 6 and are arranged in a ring array. A plurality of insertion slots 10 are formed on the surface of the small end edge of the temperature measuring cylinder 4. The cross sections of the insertion slots 10 and the insertion rods 9 are circular, the number of the insertion slots 10 is the same as that of the insertion rods 9, the diameters are equal, and the center of each insertion slot 10 and the center of each insertion rod 9 correspond one-to-one. Each insertion rod 9 can be aligned and inserted into the corresponding insertion slot 10. At this time, the temperature measuring seat 5 can be fixed on the temperature measuring cylinder 4 through the cooperation between the insertion rods 9 and the insertion slots 10, and the sensor body 6 is located in the inner cavity of the temperature measuring cylinder 4. By inserting the fingers into the groove 7, the handle 8 can be pulled and the temperature measuring seat 5 can be pulled outward until each insertion rod 9 is pulled out of the insertion slot 10. At this time, the temperature measuring seat 5 and the sensor body 6 can be removed from the temperature measuring cylinder 4, so that when the sensor body 6 fails, it can be disassembled and repaired without the need for additional tools. Not only does it greatly improve the efficiency of maintenance, but it also effectively avoids damaging the equipment structure.

[0036] Each insertion rod 9 is sleeved with an anti-skid sleeve 11, the surface of the anti-skid sleeve 11 is engraved with a chevron anti-skid pattern, the anti-skid sleeve 11 is made of elastic materials such as silicone, and is fixed by glue. When the insertion rod 9 is inserted into the insertion slot 10, the anti-skid pattern on the surface of the anti-skid sleeve 11 can reduce the friction between the insertion rod 9 and the insertion slot 10, thereby preventing the insertion rod 9 from slipping and displacing and causing the temperature measuring seat 5 to fall off the temperature measuring cylinder 4.

[0037] The edge of the insulating plug 1 away from the protruding column 2 is provided with a sealing ring 12, the sealing ring 12 is made of elastic materials such as rubber, and is fixed by glue. The insulating plug 1 can be inserted into the joint of the cable of the ring main unit. At this time, the sealing ring 12 can fill the gap between the insulating plug 1 and the cable joint, thereby preventing dust and moisture in the air from entering the inside of the insulating plug 1 through the gap and affecting the normal work and service life of the sensor body 6.

[0038] The one end of the insulating plug 1 close to the protruding column 2 is circular, a plurality of positioning blocks 13 are fixedly connected at the circular edge, the positioning blocks 13 are arc-shaped, the inner diameter of the positioning blocks 13 is equal to the diameter of the circular end of the insulating plug 1, when the insulating plug 1 is inserted into the joint of the cable of the ring main unit, each positioning block 13 can be attached to the outer wall of the cable joint, at this time, the insulating plug 1 can be positioned by the plurality of positioning blocks 13, so that the stability of the insulating plug 1 is improved, and the loosening of the insulating plug 1 is prevented.

[0039] The protruding column 2 is hexagonal, the side wall surface of the protruding column 2 is provided with a plurality of anti-skid patterns, the protruding column 2 can be clamped by a wrench, at this time, the insulating plug 1 can be taken off from the joint of the cable of the ring main unit by pulling the protruding column 2, and the anti-skid patterns on the side wall surface of the protruding column 2 can increase the friction force to prevent slipping.

[0040] The circuit, electronic components and chip modules involved in the utility model are all prior art, and the skilled person in the art can realize them without further description, and the content protected by the utility model does not involve the improvement of software and methods.

[0041] The standard parts used in the application file can be purchased from the market, all the components in the application file can be ordered according to the description and the drawings, and the specific connection mode of each part adopts the conventional screw, rivet and welding means in the prior art, and the mechanical parts and equipment adopt the conventional type in the prior art.

[0042] The working principle of the utility model is:

[0043] In use, the insulating plug 1 can be inserted into the joint of the cable of the ring main unit, the temperature measuring assembly is installed in the mounting groove 3 of the insulating plug 1, the temperature change of the insulating plug 1 and the cable joint can be sensed in real time by the sensor body 6 in the temperature measuring assembly, and the temperature change is converted into an electric signal, the analog temperature signal can be converted into a digital signal by an ADC module, and the temperature data can be sent to a monitoring terminal by a wireless communication module, and the current temperature can be displayed by a monitoring system, when the temperature exceeds the set threshold value, the system will issue an alarm, so that the heating condition in the cable can be accurately mastered, and the hidden danger is effectively eliminated, when the temperature sensor fails, the temperature measuring cylinder 4 can be rotated to take out the temperature measuring assembly from the mounting groove 3 of the insulating plug 1, then the finger is inserted into the groove 7 to pull the handle 8 and pull the temperature measuring seat 5 outward, until the plug rods 9 are pulled out of the plug slots 10, at this time, the temperature measuring seat 5 and the sensor body 6 can be detached from the temperature measuring cylinder 4, so that the sensor body 6 can be disassembled and repaired when it fails, the whole disassembly process does not need additional tools, which not only greatly improves the efficiency of maintenance, but also effectively avoids the damage to the equipment structure.

[0044] The preferred embodiments disclosed above are only used to help describe the utility model. The preferred embodiments do not describe all the details and do not limit the utility model to the specific embodiments. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that the persons skilled in the art can well understand and utilize the utility model. The utility model is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A voltage type temperature sensor for cable gland of ring main unit, characterized in that, The insulating plug is fixedly connected with a convex column at one end, and an installation groove is formed at the other end of the insulating plug, the installation groove is a circular groove and is in a stepped shape, and a temperature measuring assembly is arranged in the installation groove. The temperature measuring assembly comprises a temperature measuring cylinder which is in a cylindrical shape and is in a stepped shape, and a temperature measuring seat is arranged at one end of the temperature measuring cylinder, the temperature measuring seat is circular, one side of the temperature measuring seat is fixedly connected with a sensor body, and a groove is formed at the other side of the temperature measuring seat, and a handle is fixedly connected with the groove wall of the groove.

2. The voltage type temperature sensor for cable head of ring main unit according to claim 1, characterized in that, The outer diameters of the large end and the small end of the temperature measuring cylinder correspond to the inner diameters of the large end and the small end of the installation groove, respectively, and external threads and internal threads are respectively formed on the outer wall of the large end of the temperature measuring cylinder and the inner wall of the large end of the installation groove.

3. The ring main unit dedicated cable plug voltage temperature sensor according to claim 1, characterized in that, The diameter of the temperature measuring seat is equal to the outer diameter of the small end of the temperature measuring cylinder, a plurality of insertion rods are fixedly connected with one side of the temperature measuring seat, the insertion rods are arranged on one side of the sensor body in a circular array, a plurality of insertion grooves are formed on the surface of the small end of the temperature measuring cylinder, the cross sections of the insertion grooves and the insertion rods are circular, the number of the insertion grooves is equal to the number of the insertion rods, the diameters of the insertion grooves and the insertion rods are equal, and the center of each insertion groove and the center of each insertion rod correspond to each other.

4. The ring main unit dedicated cable plug voltage temperature sensor according to claim 3, characterized in that, A slip-proof sleeve is arranged on the rod body of each insertion rod, and a chevron slip-proof pattern is formed on the surface of the slip-proof sleeve.

5. The ring main unit dedicated cable plug voltage temperature sensor according to claim 1, characterized in that, A sealing ring is arranged on the surface of the edge of the insulating plug away from the convex column.

6. The ring main unit dedicated cable plug voltage temperature sensor according to claim 1, characterized in that, The end of the insulating plug close to the convex column is circular, a plurality of positioning blocks are fixedly connected with the circular edge of the insulating plug, the positioning blocks are arc-shaped, and the inner diameter of the positioning blocks is equal to the diameter of the circular end of the insulating plug.

7. The ring main unit dedicated cable plug voltage temperature sensor according to claim 1, characterized in that, The convex column is hexagonal, and a chevron slip-proof pattern is formed on the surface of the side wall of the convex column.

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