CN217980593U

CN217980593U - Temperature measurement structure for ring main unit

Info

Publication number: CN217980593U
Application number: CN202221914574.6U
Authority: CN
Inventors: 徐超; 薛浩; 戴燚帆; 魏正毅; 鲁华
Original assignee: Hangzhou Yihuitong Technology Co ltd
Current assignee: Hangzhou Yihuitong Technology Co ltd
Priority date: 2022-07-20
Filing date: 2022-07-20
Publication date: 2022-12-06
Anticipated expiration: 2032-07-20

Abstract

The utility model discloses a temperature measurement structure for looped netowrk cabinet aims at overcoming the poor problem of radio frequency signal communication quality among the prior art, and it includes cable joint and RFID temperature measurement label, and the cable joint is including connecting body, binding post and end cap, and the end cap shutoff is on the port of the joint body 1 of cable joint and with binding post location this internally at the joint, and the end cap includes the wave guide, and RFID temperature measurement label sets up on the inside wall of wave guide.

Description

Temperature measurement structure for ring main unit

Technical Field

The utility model belongs to electrical equipment refers in particular to a temperature measurement structure for looped netowrk cabinet.

Background

The Ring Main Unit (Ring Main Unit) is a group of electric equipment (high-voltage switch equipment) which is arranged in a metal or nonmetal insulating cabinet body or is made into an assembled interval Ring Main power supply Unit, and the core part of the Ring Main Unit adopts a load switch and a fuse, so that the Ring Main Unit has the advantages of simple structure, small volume, low price, capability of improving power supply parameters and performance, power supply safety and the like. The transformer substation is widely used in distribution stations and box-type substations of load centers such as urban residential districts, high-rise buildings, large public buildings, factories and enterprises. The ring main unit comprises a load switch, a fuse, a transformer, a main circuit incoming line, a connector body and the like. The cable joint is used for installing a cable head, the cable joint is fixedly arranged in the ring main unit in actual use, the cable head is installed on the cable joint, the outer portion of the cable joint is packaged by an insulating protective shell, and the cable joint works in a highly sealed state.

Because the looped netowrk cabinet during operation produces high temperature easily on the cable joint, need carry out the temperature measurement control to the cable plug. The utility model discloses a china utility model patent of current bulletin number "CN214277218U" discloses a cable joint temperature measurement label mounting structure, including barrel and temperature measurement label, the barrel is including even horizontal section of thick bamboo and a vertical retort as an organic whole, be equipped with the C shape fastener of opening orientation vertical retort in the horizontal section of thick bamboo with vertical retort junction, C shape fastener is equipped with the arc draw-in groove, be equipped with the crimping terminal in the vertical retort, the crimping terminal including even as an organic whole cylinder portion and with arc draw-in groove assorted connecting portion, be equipped with the temperature measurement label between the arc side of connecting portion and the arc draw-in groove of C shape fastener, horizontal section of thick bamboo one side is equipped with can dismantle fixed connection's insulating stopper with the crimping terminal, vertical retort lower extreme is equipped with fixture. When installing the temperature measurement label, only need install the temperature measurement label between the connecting portion of crimping terminal and the arc draw-in groove portion of C shape fastener earlier, then insert the crimping terminal and promote to the horizontal section of thick bamboo side after inserting the vertical section of thick bamboo, make connecting portion insert in the arc draw-in groove of the C shape fastener of horizontal section of thick bamboo, because the cooperation restriction of cylinder portion and vertical section of thick bamboo, can avoid the crimping terminal excessively to insert, then pack insulating plug into horizontal section of thick bamboo in and be connected with the crimping terminal again, can make the crimping terminal fixed, the temperature measurement label is then packed into completely in the horizontal section of thick bamboo and is embedded into in the C shape fastener like this, because the crimping terminal is fixed, can make the temperature measurement label firmly installed and avoid droing like this, simultaneously because the temperature measurement label directly contacts with the crimping terminal, can effectively improve the sensitivity and the accuracy of temperature measurement label to temperature monitoring like this, and then effectively improve the monitoring effect to the cable temperature.

However, the prior art is not perfect, because the temperature measurement label is completely arranged in the transverse cylinder and embedded into the C-shaped clamping piece, although the lower part of the temperature measurement label is made of metal, the transverse cylinder above the temperature measurement label is still made of plastic or rubber, the problem of poor communication quality in wireless signal transmission is caused, and the problems that the electrical performance of the original cable joint is easily influenced by the arranged temperature sensor and the like are caused; and the structure of the temperature measurement label cannot be thinned.

As can be appreciated by those skilled in the art in light of the above teachings, the following features and problems are set forth in the present specification:

(1) The installation position of the temperature measurement label is generally concentrated above the copper nose at present;

(2) The temperature measurement label structure cannot be thinned, so that the embedding of a chip on the label cannot be realized;

(3) The problem of poor communication quality in wireless signal transmission exists, and the problems that the electrical performance of the original cable joint is easily influenced by the embedded temperature sensor and the like are solved;

therefore, the problem to be solved is to design a temperature measurement structure of a ring main unit.

SUMMERY OF THE UTILITY MODEL

For overcoming the not enough and problem that exists of prior art, the utility model provides a temperature measurement structure for looped netowrk cabinet.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a temperature measurement structure for looped netowrk cabinet, includes cable joint and RFID temperature measurement label, and the cable joint is including connecting body, binding post and end cap, and the end cap shutoff is on the port of the joint body 1 of cable joint and with binding post location at connecting this internally, and the end cap includes the wave guide, and RFID temperature measurement label sets up on the inside wall of wave guide.

Preferably, the integral structure of the waveguide tube is a circular tube.

Preferably, the plug further comprises a nut, the connecting terminal comprises a screw, the nut is in threaded connection with the screw, and the waveguide is sleeved on the screw.

Preferably, the plug further comprises an insulating plug, and the waveguide is embedded in the insulating plug.

Preferably, the waveguide tube further comprises an elastic arm used for generating elastic force for abutting the RFID temperature measuring label on the inner side wall of the waveguide tube.

Preferably, the elastic arm comprises a placement groove, and the RFID temperature measurement tag is arranged in the placement groove.

Preferably, the RFID temperature measurement tag comprises an RFID antenna, the whole structure of the RFID antenna is layered, and the RFID antenna is arranged on the inner side wall of the waveguide tube.

Preferably, the RFID antenna includes at least two antenna segments, the two or more antenna segments are sequentially disposed together, and an included angle between adjacent antenna segments is less than 180 °.

Preferably, the RFID temperature measurement tag further comprises a circuit board, a temperature measurement chip and a frequency optimization circuit, the RFID antenna and the temperature measurement chip are respectively arranged on the circuit board, the RFID antenna is electrically connected to the temperature measurement chip, and the temperature measurement chip is electrically connected to the RFID antenna through the frequency optimization circuit.

Preferably, the circuit board is provided with an embedded hole, and the temperature measuring chip is arranged in the embedded hole.

Compared with the prior art, the utility model outstanding and profitable technological effect is:

the utility model discloses in, radio frequency signal passes through RFID antenna and the waveguide tube outwards transmission, and RFID antenna and waveguide tube have constituted a whole antenna, and then optimized the radio frequency signal transmission focus condition of RFID temperature measurement label through the structure that changes whole antenna to reach the effect that improves signal gain.

The utility model discloses in, RFID antenna butt is on the inside wall of wave guide, and radio frequency signal gives off from the outside of line wave guide all-roundly, has improved the coverage of signal, has further improved signal gain's effect.

The utility model discloses in, the temperature measurement chip sets up in the embedded downthehole of circuit board for the thickness of RFID temperature measurement label becomes extremely thin, and extremely thin RFID temperature measurement label can install in the narrow and small space between the inside wall of wave guide and the screw rod, and does not contact with nut and screw rod, avoids influencing the installation each other between each part, consequently the utility model has the advantages of compact structure, reasonable in design.

The utility model discloses in, RFID antenna butt is on the inside wall of waveguide end, and the waveguide is isoelectrical potential body and overall structure and is the pipe, can not produce dielectric breakdown and discharge phenomenon to do not influence the electric property that looped netowrk cabinet and cable connect.

The utility model discloses in, the elastic arm is used for keeping the butt on the inside wall of wave guide with the RFID antenna of RFID temperature measurement label for on the cable joint of the different specifications of RFID temperature measurement label adaptation, improved RFID temperature measurement label's commonality, convenience and feasibility of carrying out greatly.

In the utility model, the temperature measurement label is processed with thinning structure, thereby realizing the embedding of the chip on the label; the temperature measurement tag is arranged in the metal cavity, so that the metal cavity itself becomes a part of the tag antenna, and radio frequency communication between the temperature measurement tag in the cavity and the outside of the cavity can be realized; and a simple fixing structure is additionally arranged, so that the label is more firmly fixed.

Drawings

Fig. 1 is one of the schematic three-dimensional structures of the present invention;

fig. 2 is a second schematic perspective view of the present invention;

FIG. 3 is a schematic cross-sectional view of the present invention;

fig. 4 is a partially enlarged schematic view of the present invention at "a" in fig. 3;

fig. 5 is a second schematic sectional view of the present invention;

fig. 6 is a partially enlarged schematic view of the present invention at "B" in fig. 5;

fig. 7 is one of the explosion structure diagrams of the present invention;

fig. 8 is a second schematic diagram of the explosion structure of the present invention;

fig. 9 is a schematic structural view of the joint body of the present invention;

FIG. 10 is one of the schematic structural diagrams of the RFID temperature measurement tag of the present invention;

fig. 11 is a second schematic structural diagram of the RFID temperature measurement tag of the present invention;

in the figure: the temperature measuring device comprises a connector body 1, an equipment sleeve 2, a crimping terminal 3, a plug 4, an RFID temperature measuring tag 5, an elastic arm 6, a first port 11, a second port 12, a third port 13, a screw rod 21, a flat washer 22, a nut 23, an elastic washer 24, a positioning hole 31, a waveguide tube 41, a nut 42, an insulating plug 43, a circuit board 51, an antenna section 52, a temperature measuring chip 53, a frequency optimizing circuit 54, a placement groove 61 and an embedded hole 511.

Detailed Description

To facilitate understanding of those skilled in the art, the present invention will be further described with reference to the accompanying drawings and specific embodiments.

As shown in the figure, the temperature measurement structure for the ring main unit comprises a cable connector and an RFID temperature measurement tag 5.

The cable joint is used for pegging graft on the looped netowrk cabinet and connects on the cable, if the cable joint pegs graft on the looped netowrk cabinet and when connecting on the cable joint, the cable passes through cable joint electricity and connects on the looped netowrk cabinet. The cable joint includes joint body 1, binding post and end cap 4, and end cap 4 shutoff is on the port of joint body 1 and fixes binding post in joint body 1. Due to the structural design, the wiring terminal and the plug 4 can be conveniently assembled in the connector body 1. The connector body 1 and the plug 4 play a role in protecting the wiring terminal, and the problem that a user is subjected to electric shock is avoided.

The connector body 1 is hollow and tubular, the RFID temperature measurement tag 5 is arranged in the connector body 1, and the RFID temperature measurement tag 5 is used for measuring the temperature in the cable connector, and particularly measuring the temperature of the wiring terminal. The RFID temperature measurement tag 5 comprises an RFID antenna used for sending radio frequency signals, the plug 4 comprises a waveguide tube 41, and the RFID antenna is abutted to the inner side wall of the waveguide tube 41.

Specifically, the waveguide 41 is made using a waveguide. The waveguide material may be copper, aluminum, etc.

In actual use, radio frequency signals are emitted outwards through the RFID antenna and the waveguide tube 41, the RFID antenna and the waveguide tube 41 form an integral antenna, the radio frequency signal emission focusing condition of the RFID temperature measurement tag 5 is further optimized by changing the structure of the integral antenna, and therefore the effect of improving signal gain is achieved.

The RFID antenna is abutted on the inner sidewall of the waveguide 41, and the outside of the radio frequency signal line waveguide 41 radiates in all directions, so that the coverage of the signal is increased, and the signal gain is further improved.

The waveguide 41 has a circular or square tube as an integral structure. The waveguide 41 is preferably a circular tube. In actual use, the signal strength emitted at each position of the circular tube is basically consistent.

The plug 4 further comprises a nut 42, the connecting terminal comprises a screw 21, the nut 42 is in threaded connection with the screw 21, and the waveguide tube 41 is sleeved on the screw 21.

By adopting the connection mode, the user can assemble the plug 4 and the wiring terminal by adopting a conventional tool, and the disassembly and the assembly are further facilitated. The waveguide tube 41 is sleeved on the nut 42, and the RFID temperature measurement tag 5 is arranged between the screw 21 and the waveguide tube 41, so that the structural compactness is improved.

The waveguide 41 and the nut 42 may be integrally formed together, and the waveguide 41 and the nut 42 may be mounted together on the insulating plug 43. The waveguide 41 and the nut 42 may be separated, and the waveguide 41 and the nut 42 may be sequentially mounted on the insulating plug 43. In the present embodiment, the waveguide 41 and the nut 42 are integrally formed together, the integral structure of the waveguide 41 is in a circular tube shape, the integral structure of the nut 42 is also in a circular tube shape, and the pipe diameter of the waveguide 41 is greater than that of the nut 42, so that when the screw 21 is screwed on the nut 42, a gap is left between the waveguide 41 and the screw 21, and the gap is used for placing the RFID temperature measurement tag 5.

The plug 4 further comprises an insulating plug 43, the waveguide 41 being embedded in the insulating plug 43.

The insulating plug 43 has a barrel-shaped overall structure, and the insulating plug 43 is used to prevent a user from directly touching the waveguide 41. In particular, the nut 42 is also embedded in the insulating plug 43.

The utility model discloses still include elastic arm 6, elastic arm 6 is used for producing the elasticity with RFID antenna butt on 41 inside walls of waveguide pipe. The elastic arm 6 fastens the RFID temperature measuring tag 5 on the inner side wall of the waveguide 41.

In practical use, the elastic arm 6 is placed in the waveguide 41, the elastic arm 6 is elastically deformed, the elastic arm 6 is positioned on the inner side wall of the waveguide 41 by means of the elasticity of the elastic arm 6, and the RFID temperature measurement tag 5 is positioned on the inner side wall of the waveguide 41 under the action of the elasticity of the elastic arm 6.

Specifically, the elastic arm 6 has an arc-shaped overall structure, the inner side wall of the waveguide 41 is also arc-shaped, and the elastic arm 6 substantially fits on the inner side wall of the waveguide 41.

The elastic arm 6 further comprises a placing groove 61, the RFID temperature measurement tag 5 is arranged in the placing groove 61, positioning firmness of the elastic arm 6 on the RFID temperature measurement tag 5 is further improved, and the elastic arm 6 and the RFID temperature measurement tag 5 are conveniently arranged on the inner side wall of the waveguide tube 41 together. Specifically, the seating groove 61 is formed at the outer side of the elastic arm 6.

The elastic arm 6 is made of an insulating material. The insulating material may be plastic.

The whole structure of the RFID antenna is layered, and the RFID antenna adopting the layered structure is beneficial to improving the compactness of the structure.

The RFID antenna comprises at least two antenna segments 52, wherein more than two antenna segments 52 are sequentially arranged together, and the included angle between the adjacent antenna segments 52 is less than 180 degrees. The included angle between the adjacent antenna segments 52 is preferably 90 °, two or more antenna segments 52 form an RFID antenna, and the whole RFID antenna adopting the above structure is in a zigzag shape, which can avoid the problem of poor contact between the RFID antenna and the waveguide 41.

The RFID temperature measurement label 5 further comprises a circuit board 51 and a temperature measurement chip 53, the RFID antenna and the temperature measurement chip 53 are respectively arranged on the circuit board 51, and the RFID antenna is electrically connected to the temperature measurement chip 53. The temperature measuring chip 53 is used for detecting the temperature of the wiring terminal.

Specifically, the circuit board 51 may be a PCB circuit board or a ceramic circuit board.

The RFID antenna may be printed over the circuit board 51.

The front and back of the circuit board 51 are provided with RFID antennas. Specifically, the RFID antenna on the front surface of the circuit board 51 abuts on the inner sidewall of the waveguide 41, and the RFID antenna on the rear surface of the circuit board 51 also faces the inner sidewall of the waveguide 41.

The temperature measurement label further comprises a frequency optimization circuit 54, and the temperature measurement chip 53 is electrically connected to the RFID antenna through the frequency optimization circuit 54. The frequency optimization circuit 54 is specifically an RLC frequency optimization circuit 54, and is configured to adjust an electrical signal of the temperature measurement chip 53, so as to improve the sensitivity and strength of the radio frequency signal, and facilitate the radio frequency signal to be sent further and more stably.

The circuit board 51 is provided with an embedded hole 511, the temperature measuring chip 53 is arranged in the embedded hole 511, and the frequency optimizing circuit 54 can also be arranged in the embedded hole 511, so that the flatness of the outer surface of the circuit board 51 is improved, and the overall thickness is reduced.

The wiring terminal comprises an equipment sleeve 2 and a crimping terminal 3, wherein the crimping terminal 3 is detachably arranged on the equipment sleeve 2, and the crimping terminal 3 and the equipment sleeve 2 are respectively right opposite to a port of the connector body 1. In particular, the screw 21 is part of the apparatus casing 2. The crimp terminal 3 is provided with a positioning hole 31, and the device sleeve 2 is inserted into the positioning hole 31. The terminal also comprises a nut 23, the nut 23 is screwed on the screw 21, and the nut 23 presses the crimp terminal 3 against the device sleeve 2, so that the device sleeve 2 and the crimp terminal 3 are fixedly arranged together. The wiring terminal further comprises a flat washer 22, the flat washer 22 is arranged between the nut 23 and the crimping terminal 3, the flat washer 22 is further sleeved on the screw 21, and the flat washer 22 is used for avoiding the problem that the nut 23 scratches the crimping terminal 3 due to the fact that the nut 23 is in direct contact with the crimping terminal 3. The terminal also includes an elastic washer 24, and the elastic washer 24 is disposed between the nut 23 and the flat washer 22.

The connector body 1 is a three-way pipe, the whole structure is T-shaped, the ports of the connector body 1 comprise a first port 11, a second port 12 and a third port 13, the choke plug 4 is plugged on the first port 11, the crimping terminal 3 is right opposite to the second port 12, and the equipment sleeve 2 is right opposite to the third port 13.

In practical use, the cable can be connected to the crimp terminal 3 through the second port 12 of the connector body 1, and the ring main unit can be connected to the equipment sleeve 2 through the third port 13 of the connector body 1.

The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a temperature measurement structure for looped netowrk cabinet, its characterized in that, includes cable joint and RFID temperature measurement label (5), and the cable joint is including connecting body (1), binding post and end cap (4), and end cap (4) shutoff is on the port of connecting body (1) and with binding post location in connecting body (1), and end cap (4) are including waveguide (41), and RFID temperature measurement label (5) set up on the inside wall of waveguide (41).

2. The temperature measurement structure for the ring main unit as claimed in claim 1, wherein the integral structure of the waveguide (41) is a circular tube.

3. The temperature measurement structure for the ring main unit according to claim 1, wherein the plug (4) further comprises a nut (42), the terminal comprises a screw rod (21), the nut (42) is in threaded connection with the screw rod (21), and the waveguide (41) is sleeved on the screw rod (21).

4. The temperature measurement structure for the ring main unit as claimed in claim 1, wherein the plug (4) further comprises an insulating plug (43), and the waveguide (41) is embedded in the insulating plug (43).

5. The temperature measurement structure for the ring main unit as claimed in claim 1, further comprising an elastic arm (6), wherein the elastic arm (6) is used for generating an elastic force for abutting the RFID temperature measurement tag (5) on the inner side wall of the waveguide tube (41).

6. The temperature measurement structure for the ring main unit according to claim 5, wherein the elastic arm (6) comprises a placement groove (61), and the RFID temperature measurement tag (5) is disposed in the placement groove (61).

7. The temperature measurement structure for the ring main unit as claimed in claim 1, wherein the RFID temperature measurement tag (5) comprises an RFID antenna, the whole structure of the RFID antenna is layered, and the RFID antenna is disposed on the inner side wall of the waveguide tube (41).

8. The temperature measurement structure for the ring main unit according to claim 7, wherein the RFID antenna comprises at least two antenna segments (52), more than two antenna segments (52) are sequentially arranged together, and an included angle between adjacent antenna segments (52) is less than 180 °.

9. The temperature measurement structure for the ring main unit according to claim 1, wherein the RFID temperature measurement tag (5) further comprises a circuit board (51), a temperature measurement chip (53) and a frequency optimization circuit (54), the RFID antenna and the temperature measurement chip (53) are respectively disposed on the circuit board (51), the RFID antenna is electrically connected to the temperature measurement chip (53), and the temperature measurement chip (53) is electrically connected to the RFID antenna through the frequency optimization circuit (54).

10. The temperature measurement structure for the ring main unit according to claim 9, wherein the circuit board (51) is provided with an embedded hole (511), and the temperature measurement chip (53) is disposed in the embedded hole (511).