Intelligent monitoring plug-in terminal

Abstract

The utility model relates to the technical field of plug-in type monitoring devices, in particular to an intelligent monitoring plug-in type terminal, which comprises a front connector, an equipment sleeve connected with the front connector through a stud, a rear connector connected with the front connector through a connecting stud, a monitoring assembly connected with the rear connector through a connecting stud, and a plug-in type terminal connected with the monitoring assembly. The front connector and the rear connector are connected with branch cables through connecting assemblies. The protection assembly is arranged between the rear connector and the monitoring assembly, and the protection assembly is used for providing over-current protection during use; according to the invention, the joints are designed in a modular manner, and when a plurality of branch cables need to be inserted, the front joint and the rear joint are inserted through the connecting studs, so that tight electrical connection can be realized, and the insertion of the plurality of branch cables can be realized at a single interface. During use, the temperature of the cable at the interface position is monitored in real time through the monitoring assembly, and an alarm is given, so that an electric power system accident caused by too high temperature can be effectively prevented, and the practicability is very high.

Description

Technical Field

[0001] The utility model relates to the technical field of plug-in monitoring devices, in particular to an intelligent monitoring plug-in terminal. Background Art

[0002] The insulating plug of the ring main unit is an important power equipment accessory. Its main function is to ensure that the high-voltage power equipment of the ring main unit has good insulation effect, thereby preventing current leakage and ensuring safe operation. The insulating plug is usually made of high-strength insulating material, which can effectively isolate the high-voltage live parts and protect personnel and equipment from the risk of electric shock. At the same time, it also plays a vital role in the overall safe operation of the ring main unit. Ordinary ring main unit insulating plugs have the function of isolating metal shells and electrodes, but most of them do not have temperature monitoring functions, which makes it inconvenient to monitor the temperature of conductors in the ring main unit, so that the alarm cannot be issued in time when there is a hidden danger of overheating of the conductor, which in turn causes safety accidents.

[0003] In order to solve the above problems, a wireless temperature measurement device for high-voltage power plant power supply of a ring main unit with application number "CN2023205876774" is provided, including a cabinet and a terminal device, wherein a cable rear connector is arranged inside the cabinet, and an insulating plug body is connected to the inside of the cable rear connector, and a first card slot is provided on the left side inside the insulating plug body, and a first nut is connected to the inside of the first card slot, and a rear copper wire is connected to the inside of the first nut through internal threads, and the rear copper wire passes through the inside of the cable rear connector and extends to the inside of the temperature monitoring mechanism. A spring pad is arranged outside the rear copper wire, and a flat pad is arranged outside the rear copper wire, and the flat pad is located on the left side of the spring pad, and the spring pad is located on the left side of the first nut. A second card slot is provided on the right side inside the insulating plug body, and a second nut is connected to the inside of the second card slot in a snap-fitting manner. A shielding cover is movably connected to the right side of the insulating plug body, and a screw is fixedly connected to the left side of the shielding cover, and the screw can be threadedly connected to the second nut. The insulating plug body serves to isolate the internal conductor of the rear connector of the cable. The temperature monitoring mechanism can contact the rear copper wire to monitor the temperature of the rear copper wire. The alarm light, buzzer and terminal equipment receive temperature data from the temperature monitoring mechanism and send out an alarm when the temperature monitoring mechanism detects that the temperature of the rear copper wire is too high, thereby serving as a warning. The shielding cover serves to shield external electromagnetic waves and prevent external electromagnetic waves from affecting the internal circuit.

[0004] However, the above-mentioned insulating plug has the following obvious defects when in use. The above-mentioned device is a single-line transmission structure, and in actual use, there are often multiple cables that need to be inserted into the terminal. The single connector (connected with a single cable) in the above-mentioned device corresponds to a single socket, which is difficult to meet actual use requirements. When multiple cables are inserted into the terminal, the terminal often breaks down due to the concentrated electric field at the terminal. In this regard, we propose an intelligent monitoring plug-in terminal. Utility Model Content

[0005] The purpose of the utility model is to provide an intelligent monitoring plug-in terminal to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An intelligent monitoring plug-in terminal, comprising:

[0008] A front joint, wherein the front joint is connected to an equipment casing via a stud bolt, the front joint is connected to a rear joint via a connecting stud, the rear joint is connected to a monitoring component via a connecting stud, and the front joint and the rear joint are both connected to a branch cable via a connecting component; and

[0009] A protection component is arranged between the rear connector and the monitoring component, and is used to provide overcurrent protection when in use.

[0010] Preferably, the protection component includes a T-shaped shell, a clamping block, a conductive mechanism, a buckle and a grounding cable, the clamping block is arranged inside the T-shaped shell, the conductive mechanism is used to connect the clamping block and the buckle to each other, and the buckle is connected to the grounding cable.

[0011] Preferably, the conductive mechanism includes a crimping block, a conductive block and an insulating sleeve, the conductive block is arranged inside the insulating sleeve, the crimping blocks are arranged on both sides of the insulating sleeve, and the crimping blocks on both sides are respectively connected to the clamping block and the buckle.

[0012] Preferably, the connecting stud is provided with an insertion slot, an insertion rod is provided at one end of the connecting stud away from the insertion slot, a crimping terminal 1 is provided inside the rear joint, and the clamping block and the crimping terminal 1 are both provided with a socket corresponding to the insertion rod.

[0013] Preferably, the monitoring assembly includes a flat washer, a spring washer, a nut, an insulating plug, a temperature sensor and a shielding cover. The rod inserted in the clamping block and the insulating plug are connected to each other. The flat washer and the spring washer are arranged between the insulating plug and the clamping block. The flat washer and the spring washer are both connected to the rod inserted in the clamping block. The temperature sensor is arranged inside the insulating plug, and the shielding cover is movably connected to the T-shaped shell.

[0014] Preferably, the connecting assembly includes a stress cone, the stress cone provided on the rear joint is connected to the crimping terminal 1, and the stress cone is connected to the branch cable.

[0015] Preferably, a second crimping terminal is provided inside the front joint, the stud bolt is inserted into the second crimping terminal and is interconnected with the connecting stud, and the second crimping terminal and the stress cone provided on the front joint are connected to each other.

[0016] Preferably, the front connector, the rear connector and the T-shaped housing are all provided with grounding cables.

[0017] Compared with the prior art, the beneficial effects of the utility model are as follows: the present application modularizes the connector design, and when multiple branch cables need to be inserted, a tight electrical connection can be achieved by plugging the front connector and the rear connector together through connecting studs, so that multiple branch cables can be inserted into a single interface, and the cores of each part of the cable are tightly connected together through crimping terminals (including crimping terminal 1 and crimping terminal 2) when multiple branch cables are connected. The design of the stress cone can disperse the electric field stress of each branch cable at the connection point, reduce electric field concentration, prevent terminal breakdown, and further enhance the safety of the connection; a protection component is provided at one end of the rear connector (the incoming line of the ring network cabinet), so as to provide overcurrent protection during use, thereby improving the reliability and stability of the power system; when in use, the temperature of the cable at the interface position is monitored in real time by the monitoring component and an alarm is issued, which can effectively prevent power system accidents caused by excessive temperature, and is very practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the explosion structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the cross-sectional structure of the protection component of the utility model;

[0020] Figure 3 This is a schematic diagram of the internal structure of the insulating sleeve of the utility model.

[0021] In the figure: 1 front connector, 2 stud bolt, 3 equipment sleeve, 4 connecting stud, 5 rear connector, 6 branch cable, 7 T-shaped shell, 8 clamping block, 9 buckle, 10 grounding cable, 11 crimping block, 12 conduction block, 13 insulating sleeve, 14 crimping terminal one, 15 flat washer, 16 spring washer, 17 nut, 18 insulating plug, 19 temperature sensor, 20 shielding cover, 21 stress cone, 22 crimping terminal two, 23 grounding cable, 401 insertion slot, 402 plug rod, 100 centralized collector. DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1-3 , the utility model provides a technical solution:

[0024] An intelligent monitoring plug-in terminal, as shown in the instruction manual Figure 1 As shown, including:

[0025] A front joint 1, the front joint 1 is connected to an equipment casing 3 via a stud bolt 2, the front joint 1 is connected to a rear joint 5 via a connecting stud 4, the rear joint 5 is connected to a monitoring component via the connecting stud 4, the front joint 1 and the rear joint 5 are sealed and electrically connected when the front joint 1 and the rear joint 5 are connected to each other via the connecting stud 4, and the front joint 1 and the rear joint 5 are both connected to a distribution cable 6 via a connecting component; and

[0026] A protection component is arranged between the rear connector 5 and the monitoring component, and is used to provide overcurrent protection when in use.

[0027] The protection component includes a T-shaped shell 7, a clamping block 8, a conductive mechanism, a buckle 9 and a grounding cable 10. The T-shaped shell 7 is used to install other components of the protection component. The clamping block 8 is fixedly connected to the inside of the T-shaped shell 7. The conductive mechanism is used to connect the clamping block 8 and the buckle 9 to each other. The buckle 9 is connected to the grounding cable 10. The grounding cable 10 is used to lead the current to the ground when the equipment fails or leaks electricity to avoid the risk of electric shock and equipment damage.

[0028] The conductive mechanism includes a crimping block 11, a conductive block 12 and an insulating sleeve 13. The conductive block 12 is arranged inside the insulating sleeve 13, and the crimping blocks 11 are arranged on both sides of the insulating sleeve 13. The crimping block 11 arranged at one end of the insulating sleeve 13 is used to be mutually clamped with the clamping block 8 and electrically connected, and the crimping block 11 arranged at the other end of the insulating sleeve 13 is used to be mutually connected with the buckle 9. The crimping blocks 11 on both sides are respectively mutually connected with the clamping block 8 and the buckle 9.

[0029] The connecting stud 4 is provided with an insertion groove 401, and an insertion rod 402 is provided at one end of the connecting stud 4 away from the insertion groove 401. A crimping terminal 14 is provided inside the rear joint 5, and the crimping terminal 14 is movably inserted in the rear joint 5. The clamping block 8 and the crimping terminal 14 are both provided with sockets corresponding to the insertion rod 402.

[0030] The monitoring component includes a flat washer 15, a spring washer 16, a nut 17, an insulating plug 18, a temperature sensor 19 and a shielding cover 20. The plug rod 402 inserted in the clamping block 8 and the insulating plug 18 are interconnected. The flat washer 15 and the spring washer 16 are arranged between the insulating plug 18 and the clamping block 8. The flat washer 15 and the spring washer 16 are both interconnected with the plug rod 402 inserted in the clamping block 8. The temperature sensor 19 is arranged inside the insulating plug 18. The shielding cover 20 is movably connected to the T-shaped shell 7. In this embodiment, the temperature sensor 19 is remotely connected to the centralized collector 100, and the two communicate through the communication line of RS485 communication data collection.

[0031] The connection assembly includes a stress cone 21. The design of the stress cone 21 can disperse the electric field stress at the cable terminal, reduce the electric field concentration, prevent the terminal from breaking down, and further enhance the safety of the connection. The stress cone 21 arranged at the rear connector 5 is connected to the crimping terminal 14, and the stress cone 21 is connected to the branch cable 6. When installing the branch cable 6 and the stress cone 21, after fixing the branch cable 6, measure 180mm downward from the end of the branch cable 6, strip the sheath layer of the branch cable 6 within this length, and strip the copper shielding tape of the branch cable 6: measure 180mm downward from the end of the branch cable 6, strip the copper shielding tape of the branch cable 6 within this length; measure 30mm from the outer sheath cut toward the cable end, and neatly strip the semi-conductive layer; then use sandpaper to polish the semi-conductive layer cut to make it smooth; then measure 55mm of the insulation layer downward from the end of the branch cable 6 and strip it, make a 45-degree smooth chamfer at about 3mm at the end of the insulation layer of the branch cable 6, and then clean up the semi-conductive traces on the insulation layer. Wrap 2 to 3 layers of PVC tape 15 mm away from the cutout of the outer sheath of the branch cable 6 as a positioning mark after the stress cone 21 is pushed into the branch cable 6. Clean the surface of the semi-conductive layer of the branch cable 6, and use the provided semi-conductive tape in a semi-overlapping manner, starting from 20 mm from the cutout of the semi-conductive layer, to wrap the semi-conductive layer in 4 to 6 layers. The wrapping thickness should be between 3 mm. For small specifications, more layers can be wrapped, and it can overlap with the outer sheath layer of the branch cable 6, which can seal the sheath layer of the branch cable 6. Then clean the surface of the insulation layer of the branch cable 6 with anhydrous alcohol; after the alcohol has evaporated, evenly apply grease to the surface of the insulation layer of the branch cable 6. After cleaning the stress cone 21, push the stress cone 21 into the cable until it reaches the positioning mark, and the installation of the stress cone 21 and the cable can be completed;

[0032] A crimping terminal 22 is provided inside the front joint 1, and the crimping terminal 22 is movably inserted in the front joint 1. The stud bolt 2 is inserted in the crimping terminal 22 and is connected to the connecting stud 4. The crimping terminal 22 and the stress cone 21 provided on the front joint 1 are connected to each other. When the connecting stud 4 provided on the front joint 1 and the stud bolt 2 are connected to each other, the connecting stud 4 needs to be fastened to the stud bolt 2 with a wrench, and the connecting stud 4 must be installed and fastened with a tightening torque greater than 50N·m to ensure good contact between the connecting stud 4 and the crimping terminal 22.

[0033] The front connector 1 , the rear connector 5 and the T-shaped housing 7 are all provided with a grounding cable 23 , and the grounding cable 23 is used to prevent the front connector 1 , the rear connector 5 and the housing of the T-shaped housing 7 from being charged.

[0034] Working principle: During installation, first use anhydrous ethanol to clean the inner surface of the front connector 1, the outer surface of the equipment casing 3, the outer surface of the stress cone 21, and the outer surface of the insulating plug 18. After the anhydrous ethanol evaporates, evenly apply insulating grease on the cleaned surface; push the cleaned and lubricated front connector 1 onto the cable with the stress cone 21 installed until the round hole on the crimping terminal is at the center of the front connector 1; screw the shorter end of the stud bolt 2 into the screw hole of the equipment casing 3 to connect the stud bolt 2 and the equipment casing 3 to each other; push the front connector 1 with the cable onto the equipment casing 3, and pass the stud bolt 2 through the round hole of the crimping terminal 22; then install the rear connector 5 according to the installation method of the front connector 1 Push in the cable equipped with the stress cone 21 until the round hole of the crimping terminal is at the center of the connector; push the rear connector 5 equipped with the branch cable 6 and the stress cone 21 into the front connector 1 equipped with the connecting stud 4 to complete the installation of the rear connector 5; when installing the protection component, push the T-shaped shell 7 into the rear connector 5 equipped with the connecting stud 4, so that the plug 402 of the connecting stud 4 is inserted into the clamping block 8, and finally, the flat washer 15, the spring washer 16, and the nut 17 are sequentially put on the plug 402 of the connecting stud 4, and the nut 17 is tightened with a socket wrench, and the tightening torque is greater than 50N·m; then put on the insulating plug 18, tighten it in the clockwise direction, and the tightening torque is 25N·m. After tightening, put on the shielding cover 20.

[0035] 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 intelligent monitoring plug-in terminal, characterized in that: include: A front joint, wherein the front joint is connected to an equipment casing via a stud bolt, the front joint is connected to a rear joint via a connecting stud, the rear joint is connected to a monitoring component via a connecting stud, and the front joint and the rear joint are both connected to a branch cable via a connecting component; and A protection component is arranged between the rear connector and the monitoring component, and is used to provide overcurrent protection when in use.

2. The intelligent monitoring plug-in terminal according to claim 1, characterized in that: The protection component includes a T-shaped shell, a clamping block, a conductive mechanism, a buckle and a grounding cable. The clamping block is arranged inside the T-shaped shell. The conductive mechanism is used to connect the clamping block and the buckle to each other. The buckle is connected to the grounding cable.

3. The intelligent monitoring plug-in terminal according to claim 2, characterized in that: The conductive mechanism comprises a crimping block, a conducting block and an insulating sleeve, wherein the conducting block is arranged inside the insulating sleeve, and the crimping blocks are arranged on both sides of the insulating sleeve, and the crimping blocks on both sides are respectively connected to the clamping block and the buckle.

4. The intelligent monitoring plug-in terminal according to claim 2, characterized in that: The connecting stud is provided with an insertion slot, an insertion rod is provided at one end of the connecting stud away from the insertion slot, a crimping terminal 1 is provided inside the rear joint, and both the clamping block and the crimping terminal 1 are provided with a socket corresponding to the insertion rod.

5. The intelligent monitoring plug-in terminal according to claim 4, characterized in that: The monitoring component includes a flat washer, a spring washer, a nut, an insulating plug, a temperature sensor and a shielding cover. The rod inserted in the clamping block and the insulating plug are connected to each other. The flat washer and the spring washer are arranged between the insulating plug and the clamping block. The flat washer and the spring washer are both connected to the rod inserted in the clamping block. The temperature sensor is arranged inside the insulating plug, and the shielding cover is movably connected to the T-shaped shell.

6. The intelligent monitoring plug-in terminal according to claim 4, characterized in that: The connection assembly includes a stress cone. The stress cone arranged on the rear joint is connected to the crimping terminal 1, and the stress cone is connected to the branch cable.

7. The intelligent monitoring plug-in terminal according to claim 6, characterized in that: A second crimping terminal is provided inside the front joint, the stud bolt is inserted into the second crimping terminal and is connected to the connecting stud, and the second crimping terminal and the stress cone provided on the front joint are connected to each other.

8. The intelligent monitoring plug-in terminal according to claim 2, characterized in that: The front connector, the rear connector and the T-shaped housing are all provided with grounding cables.

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