CN216695106U - Wall bushing with voltage, current and temperature detection - Google Patents
Wall bushing with voltage, current and temperature detection Download PDFInfo
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- CN216695106U CN216695106U CN202220090062.6U CN202220090062U CN216695106U CN 216695106 U CN216695106 U CN 216695106U CN 202220090062 U CN202220090062 U CN 202220090062U CN 216695106 U CN216695106 U CN 216695106U
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Abstract
The utility model discloses a wall bushing with voltage, current and temperature detection, which comprises a conductive rod (10), an insulating shell (20) and a shielding net (30) which are nested to form a coaxial rotationally symmetrical cylinder, and the wall bushing also comprises: a current detection module which senses the current flowing through the conductive rod (10) through a current sensor arranged in the insulating shell (20) and is connected to the outside of the insulating shell (20) through an interface; the temperature detection module is closely contacted with the conductive rod (10) and is used for detecting the temperature of the conductive rod (10); and the voltage detection module induces voltage through a voltage sensor tightly attached to the conducting rod (10) and connects the induced voltage to the overvoltage sensor interface to the outside of the insulating shell (20).
Description
Technical Field
The utility model relates to the technical field of Radio Frequency Identification (RFID), in particular to a wall bushing with voltage, current and temperature detection functions.
Background
The wall bushing is an important connecting part between a transformer and a distribution line, is a leading-out wire at the low-voltage side of a main transformer of the transformer and a switch chamber, and has the important characteristics of stable temperature rise and thermal short-time current.
The wall bushing is an important connecting part of a transformer or an inflatable ring main unit and is a core connecting part of the transformer or the inflatable ring main unit and a cable, and the wall bushing has the important characteristics that the wall bushing has the problems of stable temperature rise and overlarge loop resistance caused by installation reasons. The loop resistance is too large, under the condition that large current passes through, heat energy can be generated, high temperature is generated under the action of a long time, and the high temperature is easy to ignite and burn to cause electric power accidents.
The passage of current through the conductor resistance generates heat losses. Ferromagnetic objects (such as iron flanges and general iron metal accessories) around the conductor generate iron loss under the action of the alternating electromagnetic field, and insulating media around the conductor generate dielectric loss under the action of the alternating electromagnetic field. These heat sources all raise the temperature of the sleeve. When the sleeve reaches a stable temperature state under the action of rated current, the difference between the temperature of a certain part and the temperature of the surrounding medium (such as air, oil in an electric appliance and the like) is called as the stable temperature rise of the part. Short-time fault current can cause heating when passing through the wall bushing, can cause heating when the temperature exceedes standard requirement, leads to the electric power accident. The wall bushing can bear the thermal effect generated by the short-circuit current within a certain time without being damaged, and the short-circuit current which can be borne by the wall bushing becomes thermal short-time current.
In order to ensure the normal operation of the wall bushing and further ensure the safe operation and the safe power supply of a line, the wall bushing with voltage, current and temperature detection is actually needed to be provided.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to provide the wall bushing with the voltage, current and temperature detection function, so that the voltage, current and temperature data of the wall bushing can be detected, the data can be transmitted to the monitoring background in real time, whether the monitoring data of the monitoring background meets the standard requirements or not is judged, the power accident is predicted in advance, and the purpose of preventing the power accident is achieved.
In order to achieve the purpose, the wall bushing with voltage, current and temperature detection comprises a conductive rod (10), an insulating shell (20) and a shielding net (30) which are nested to form a coaxial rotation symmetrical cylinder, and further comprises:
the current detection module is used for sensing the current flowing through the conducting rod (10) through a current sensor arranged in the insulating shell (20) and is connected to the outside of the insulating shell (20) through an interface;
the temperature detection module is closely contacted with the conductive rod (10) and is used for detecting the temperature of the metal conductive rod (10);
and the voltage detection module induces voltage through a voltage sensor tightly attached to the conducting rod (10) and connects the induced voltage to the overvoltage sensor interface to the outside of the insulating shell (20).
Preferably, the current detection module comprises a current sensor consisting of a coil embedded in an insulating housing (20) around a conductive rod (10) and a two-port current sensor interface to sense the current flowing through the conductive rod (10) and is connected to the outside of the insulating housing (20) through the two-port current sensor interface for current monitoring.
Preferably, the temperature detection module comprises an RFID chip with a temperature sensor and a radiation antenna, which are in close contact with the conductive rod (10) through a thermally conductive insulating material.
Preferably, the voltage detection module is formed by connecting two voltage sensors tightly attached to the conducting rod (10) in parallel to form a whole, a lead is led out from the middle of the parallel connection, the outside of the lead is connected with a voltage sensor interface, and the induced voltage is connected to the insulating shell 20 through the connecting lead and the voltage sensor interface.
Preferably, insulating casing (20) comprise with the integrative first round platform (21) of pouring of insulating material, first cylinder (22), ring flange (25), second cylinder (24), second round platform (23), are used for along radial cladding conducting rod (10) are in order to avoid electric leakage or corona discharge, first round platform (21), first cylinder (22), ring flange (25), second cylinder (24), second round platform (23) link to each other in proper order and constitute insulating casing (20), convex ring flange (25) are located insulating casing (20) middle part is used for the installation to be fixed wear the wall sleeve.
Preferably, the current detection module is arranged in a first cylinder (22) of the insulating shell (20), and a current sensor composed of a coil coaxially surrounds the periphery of the conductive rod (10) and is embedded in an insulating material of the first cylinder (22) and connected to the outside of the insulating shell (20) through a current sensor interface.
Preferably, the RFID chip with the temperature sensor and the radiation antenna of the temperature detection module form an RFID temperature sensing tag which is in close contact with the conductive rod (10) at the inner side of the flange plate (25) through a heat-conducting insulating material.
Preferably, the two voltage sensors of the voltage detection module (43) are placed on the conductive rod (10) at the inner side of the flange (25), and are distributed uniformly with the temperature detection module around the conductive rod (10).
Preferably, the wall bushing further comprises a live display interface (44) electrically connected with the shielding net (30) and used for connecting the voltage induced by the shielding net (30) to the outside of the insulating shell (20) so as to enable a user to monitor whether the metal conductive rod (10) is in a live state or not.
Preferably, the voltage sensor interface and the live display interface are symmetrically arranged in the flange plate (25), and the current sensor interface is arranged on the insulating material of the first column body (22).
Compared with the prior art, the wall bushing with the voltage, current and temperature detection functions is characterized in that the current of the wall bushing with the voltage, current and temperature detection is induced by a current sensor arranged in the insulating shell (20) and is connected to the outside of the insulating shell (20) through an interface, a temperature detection module is in close contact with the conducting rod (10) to detect the temperature of the metal conducting rod (10), and the voltage detection module is electrically connected with the conducting rod (10) to induce voltage and connect the induced voltage to the interface of the overvoltage sensor to be connected to the outside of the insulating shell (20) for voltage monitoring, so that the aim of detecting the voltage, current and temperature of the wall bushing is fulfilled.
Drawings
FIG. 1 is a first axial cross-sectional view of the present invention;
FIG. 2 is a cross-sectional view taken along the line A-A of the present invention;
FIG. 3 is a second axial cross-sectional view of the present invention;
FIG. 4 is a cross-sectional view taken along the line B-B of the present invention.
Detailed Description
Other advantages and capabilities of the present invention will be readily apparent to those skilled in the art from the present disclosure by describing the embodiments of the present invention with specific embodiments thereof in conjunction with the accompanying drawings. The utility model is capable of other and different embodiments and its several details are capable of modification in various other respects, all without departing from the spirit and scope of the present invention.
Fig. 1, fig. 2, fig. 3 and fig. 4 are a first axial sectional view, a cross-sectional view taken along a direction a-a, a second axial sectional view and a cross-sectional view taken along a direction B-B, respectively, of the present invention. As shown in fig. 1, 2, 3 and 4, a wall bushing with voltage, current and temperature detection according to the present invention includes a metal conductive rod 10, an insulating housing 20, a shielding net 30, a current detection module 41, a temperature detection module 42, a voltage detection module 43 and a live display interface 44. Without loss of generality, the metal conducting rod 10, the insulating housing 20 and the shielding net 30 are cylindrical or circular structures, and the three are nested to form a coaxial rotationally symmetric cylinder.
Wherein, the metal conducting rod 10 is composed of a first connecting end 11 with internal thread, a second connecting end 12 with internal thread and a cylindrical conducting rod main body capable of bearing set current, a first conducting connecting sheet and a second conducting connecting sheet for installing and connecting cables are used for connecting external cables together according to a specified mode to form a conducting path, the generality is not lost, the external diameter of the two ends of the metal conducting rod 10 is larger than the external diameter of the cylindrical conducting rod main body to strengthen the tightness between the insulating shell and the metal conducting rod, the external surface of the first connecting end 11 is provided with a tooth socket 13 to further strengthen the tightness between the insulating shell and the metal conducting rod, the diameter and the depth of the internal thread of the first connecting end 11, the diameter and the depth of the internal thread of the second connecting end 12 and the external diameter of the two ends of the metal conducting rod 10 are arranged according to actual requirements, for example, the diameter of the internal thread of the first connecting end 11 is M16, The diameter of the internal thread of the second connecting end 12 is M12, and the outer diameters of the two ends of the metal conducting rod 10 are phi 25;
the insulating shell 20 is composed of a first round platform 21, a first cylinder 22, a second round platform 23, a second cylinder 24, a flange 25 and a slot 26 which are integrally cast by insulating materials and used for radially coating the metal conducting rod 10 to avoid electric leakage or corona discharge, the protruded flange 25 is positioned in the middle of the insulating shell 20 and used for installation and fixation, one side of the flange 25 is provided with a plurality of grooves 251 used for preventing rotation, the other side of the flange 25 is provided with a groove-shaped groove 252 used for installing a sealing ring, the upper and lower outer diameters and heights of the first round platform 21, the upper and lower outer diameters and heights of the second round platform 23, the outer diameter and height of the first cylinder 22, the outer diameter and height of the second cylinder 24 and the outer diameter and thickness of the flange 25 are set according to actual requirements;
the shielding net 30 is a metal ring embedded in the insulating housing 20 and surrounding the metal conducting rod 10, and is used for shielding the temperature detection module 42, the voltage detection module 43 and the external electric field of the metal conducting rod 10, so as to ensure that the electric field of the whole wall bushing is uniformly distributed to meet the standard requirement;
the current detection module 41 consists of a current sensor consisting of a coil embedded in the insulating shell 20 and surrounding the metal conducting rod 10 and two-port current sensor interfaces, and is used for sensing the current flowing through the metal conducting rod 10 according to a certain proportion and connecting the current to the outside of the insulating shell 20 through the two-port current sensor interfaces for current monitoring;
the temperature detection module 42 is composed of an RFID chip with a temperature sensor and a radiation antenna, and is in close contact with the metal conductive rod 10 through a heat-conducting insulating material, and is used for detecting the temperature of the metal conductive rod 10 and acquiring the actual temperature of the metal conductive rod 10 inside the wall bushing through an external reader-writer;
the voltage detection module 43 is formed by connecting two voltage sensors which are arranged close to the metal conducting rod 10 in parallel to form a whole, leads out a lead in the middle of the parallel connection, is connected with a voltage sensor interface outside the lead, and connects the induced voltage to the outside of the insulating shell 20 through the connecting lead and the voltage sensor interface for voltage monitoring;
the live display interface 44 is a live display interface connected to the shielding net 30, and connects the live signal induced by the shielding net 30 to the outside of the insulating housing 20, so that a user can monitor whether the metal conductive rod 10 is in a live state.
In the embodiment of the utility model, a cylindrical metal conducting rod 10 and an annular shielding net 30 are coated in an insulating shell 20, the three are nested to form a coaxial rotationally symmetrical cylinder, a first circular truncated cone 21, a first cylinder 22, a flange 25, a second cylinder 24 and a second circular truncated cone 23 are sequentially connected to form the insulating shell 20, and a cylindrical slot 26 is arranged on the inner side of the second circular truncated cone 23; the metal conducting rod 10 is a columnar conducting metal body with two thick ends and a thin middle part, internal threads are respectively arranged at the thick two ends (a first connecting end 11 and a second connecting end 12), a plurality of tooth sockets 13 are arranged on the outer surface of the first connecting end 11 of the metal conducting rod 10, the outer surface of the second connecting end 12 of the metal conducting rod 10 is exposed in the cylindrical open groove 26, a second conducting connecting sheet can be used for connecting a cable when the cable is required to be connected, and a plug can be used for temporarily blocking the wall bushing when the cable is not required to be connected; the shielding net 30 is sleeved outside the metal conducting rod 10 and embedded in the insulating shell 20 at the inner side of the flange 25, the outer side of the shielding net is electrically connected with the electrified display interface 44, the electrified display interface 44 is arranged inside the flange 25 and connected to the outside of the insulating shell 20, the voltage sensor interface is arranged at the symmetrical position of the electrified display interface 44, and the voltage sensor interface penetrates out of the insulating shell 20 from the circular opening on the shielding net 30; the current detection module 41 is arranged in the first cylinder 22, and a current sensor composed of a coil coaxially surrounds the periphery of the metal conducting rod 10, is embedded in the insulating material of the first cylinder 22 and is connected to the outside of the insulating shell 20 through a current sensor interface; the RFID chip with the temperature sensor of the temperature detection module 42 and the radiation antenna form an RFID temperature-sensitive tag, which is in close contact with the metal conductive rod 10 at the inner side of the flange 25 (i.e. the metal conductive rod 10 at the inner side of the live display interface 44) through a heat-conducting insulating material; two voltage sensors of the voltage detection module 43 are also closely attached to the metal conducting rod 10 at the inner side of the flange 25 in an insulating manner to sense the voltage of the metal conducting rod 10, preferably, the two voltage sensors and the temperature detection module 42 are distributed on the metal conducting rod 10 in trisection to reduce the processing difficulty, the two voltage sensors are connected in parallel to form a whole, a lead is led out from the middle of the parallel connection, and the lead is connected with a voltage sensor interface and penetrates out of the insulating shell 20; preferably, to distinguish the different interfaces, the voltage sensor interface and the live display interface are symmetrically disposed in the flange 25, and the current sensor interface is disposed on the insulating material of the first column 22, while the voltage sensor interface is parallel to a groove 251 (3 grooves 251 are shown), and the current sensor interface and the voltage sensor interface are at an angle of 30 degrees (30 degrees is shown) with respect to the air drop.
In the axial cross-sectional views of fig. 1 and fig. 3, the middle grid is a metal conductive rod 10, the two ends of the metal conductive rod 10 are respectively a first connection end 11 and a second connection end 12 with internal threads, the oblique line part is an integrally cast insulating housing 20, the middle protruding part of the insulating housing 20 is a flange 25, the two sides are respectively a first column and a second column, and further outwards are a first circular table and a second circular table, and a shielding net 30, a current detection module 41, a temperature detection module 42, a voltage detection module 43 and an electrified display interface 44 are embedded in the insulating housing 20; in the radial cross-sectional view of fig. 2, the circular portion of the middle mesh is the metal conductive rod 10, the diagonal portion is the first cylinder 22, and the blank circular portion is the flange 25; in the radial cross-section of fig. 4, the circular part of the middle mesh is a metal conductive rod 10, the opening arc is a shielding mesh 30 with a circular opening (for passing the voltage sensor interface), and the oblique line part is a flange 25.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the utility model. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Therefore, the scope of the utility model should be determined from the following claims.
Claims (10)
1. The utility model provides a wall bushing of electrified pressure, electric current and temperature detection, includes nested conducting rod (10), insulating casing (20), the shielding net (30) of constituteing coaxial rotational symmetry cylinder, its characterized in that, the wall bushing still includes:
the current detection module is used for sensing the current flowing through the conducting rod (10) through a current sensor arranged in the insulating shell (20) and is connected to the outside of the insulating shell (20) through an interface;
the temperature detection module is closely contacted with the conductive rod (10) and is used for detecting the temperature of the conductive rod (10);
and the voltage detection module induces voltage through a voltage sensor tightly attached to the conducting rod (10) and connects the induced voltage to the overvoltage sensor interface to the outside of the insulating shell (20).
2. A wall bushing with voltage, current and temperature sensing as claimed in claim 1, wherein: the current detection module comprises a current sensor and two-port current sensor interfaces, wherein the current sensor is composed of a coil embedded in an insulating shell (20) and surrounds a conducting rod (10), so that current flowing through the conducting rod (10) is induced and is connected to the outside of the insulating shell (20) through the two-port current sensor interfaces for current monitoring.
3. A wall bushing with voltage, current and temperature sensing as claimed in claim 2, wherein: the temperature detection module comprises an RFID chip with a temperature sensor and a radiation antenna, and is in close contact with the conductive rod (10) through a heat-conducting insulating material.
4. A wall bushing with voltage, current and temperature sensing as claimed in claim 3, wherein: the voltage detection module is formed by connecting two voltage sensors which are tightly attached to the conducting rod (10) in parallel to form a whole, a lead is led out from the middle of the parallel connection, the outside of the lead is connected with a voltage sensor interface, and the induced voltage is connected to the insulating shell (20) through the connecting lead and the voltage sensor interface.
5. A wall bushing with voltage, current and temperature sensing as claimed in claim 4, wherein: insulating casing (20) comprise with the integrative first round platform of pouring of insulating material (21), first cylinder (22), ring flange (25), second cylinder (24), second round platform (23), are used for along radial cladding conducting rod (10) are in order to avoid electric leakage or corona discharge, first round platform (21), first cylinder (22), ring flange (25), second cylinder (24), second round platform (23) link to each other in proper order and constitute insulating casing (20), convex ring flange (25) are located insulating casing (20) middle part is used for the installation to be fixed the wall bushing.
6. A wall bushing with voltage, current and temperature sensing as claimed in claim 5, wherein: the current detection module is arranged in a first cylinder (22) of the insulating shell (20), and a current sensor composed of a coil coaxially surrounds the periphery of the conductive rod (10) and is embedded in an insulating material of the first cylinder (22) and connected to the outside of the insulating shell (20) through a current sensor interface.
7. A wall bushing with voltage, current and temperature sensing as claimed in claim 6, wherein: the RFID temperature sensing tag is composed of an RFID chip with a temperature sensor of the temperature detection module and a radiation antenna, and is in close contact with the conductive rod (10) on the inner side of the flange plate (25) through a heat-conducting insulating material.
8. A wall bushing with voltage, current and temperature sensing as claimed in claim 7, wherein: two voltage sensors of the voltage detection module (43) are arranged on the conducting rod (10) at the inner side of the flange plate (25), and the two voltage sensors and the temperature detection module are uniformly distributed around the conducting rod (10).
9. A wall bushing with voltage, current and temperature sensing as recited in claim 8, wherein: the wall bushing further comprises an electrified display interface (44) electrically connected with the shielding net (30), and the electrified display interface connects the voltage induced by the shielding net (30) to the outside of the insulating shell (20) so as to be used for monitoring whether the conducting rod (10) is electrified or not by a user.
10. A wall bushing with voltage, current and temperature sensing as claimed in claim 9, wherein: the voltage sensor interface and the electrified display interface are symmetrically arranged in the flange plate (25), and the current sensor interface is arranged on the insulating material of the first column body (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220090062.6U CN216695106U (en) | 2022-01-13 | 2022-01-13 | Wall bushing with voltage, current and temperature detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220090062.6U CN216695106U (en) | 2022-01-13 | 2022-01-13 | Wall bushing with voltage, current and temperature detection |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216695106U true CN216695106U (en) | 2022-06-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220090062.6U Active CN216695106U (en) | 2022-01-13 | 2022-01-13 | Wall bushing with voltage, current and temperature detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216695106U (en) |
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2022
- 2022-01-13 CN CN202220090062.6U patent/CN216695106U/en active Active
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