CN211347156U - Temperature measurement type inner cone plug-in terminal - Google Patents
Temperature measurement type inner cone plug-in terminal Download PDFInfo
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- CN211347156U CN211347156U CN202020242363.7U CN202020242363U CN211347156U CN 211347156 U CN211347156 U CN 211347156U CN 202020242363 U CN202020242363 U CN 202020242363U CN 211347156 U CN211347156 U CN 211347156U
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Abstract
The utility model discloses a temperature measuring type inner cone plug-in terminal, relating to the technical field of power equipment temperature measurement; the temperature measuring device comprises a sleeve, a rubber insulation component, a temperature measuring component and a tail pipe system; the temperature measuring component comprises a pressing cone, a bearing ring, a temperature measuring ring and a contact sheathed on the pressing cone, and an annular groove for installing the temperature measuring ring is formed on the pressing cone; the middle part of the bearing ring is provided with a through hole for the cable core to pass through, at least one of the materials of the bearing ring close to the through hole is a non-metallic material capable of transmitting power supply signals, and the temperature measuring ring is provided with an intelligent temperature measuring module so that the intelligent temperature measuring module is transmitted with external receiving equipment through wireless signals passing through the bearing ring; through implementing this technical scheme, can effectively solve the current difficult technical problem who is difficult to monitor interior cone plug-in terminal temperature, realize interior cone plug-in terminal cable core accurate monitoring on line, and structural connection is reliable and stable, installation simple operation, maintenance cost are low, have fine application prospect and popularization potentiality.
Description
Technical Field
The utility model relates to a power equipment temperature measurement technical field, concretely relates to power equipment and cable interconnect's connection terminal temperature measurement technical field, more specifically say, relate to an interior awl plug-in terminal with intelligence temperature measurement.
Background
With the advance of urban distribution network transformation work, China is grasping the construction work of the smart power grid, and connection points among all power equipment are important points in research and difficult points. At present, more and more distribution networks adopt cable lines, particularly in the field of railway transportation such as high-speed railways and subways, and the like, inner cone pluggable terminal products such as 35kV, 42kV, 66kV and the like are mainly applied to be connected with electric equipment such as electric switches, transformers and the like and power supply cable circuits, and the difficulty lies in that potential safety hazards of connection points among the electric equipment cannot be monitored in real time, for example, partial discharge or poor conductor core contact and the like caused by cable insulation damage exist, and the connection points are often discovered after accidents such as insulation breakdown, short circuit tripping or power failure in power utilization areas are caused. Research shows that the technical problem of the power equipment is represented as a fault point heating phenomenon, so that fault hidden dangers can be mastered in advance by detecting the heating condition of relevant parts of the power equipment, the construction work of a national smart grid is improved, and the intellectualization and the health of the fault monitoring of the power equipment are realized.
Nevertheless according to the utility model discloses the people are implementing according to the application the utility model discloses the in-process, the discovery is carried out current interior awl plug-in terminal temperature measurement and is had following technical problem at least: due to the structural limitation of the existing inner cone plug-in terminal, the area for directly measuring the temperature of the sleeve conductor is limited, and the area capable of measuring the temperature is completely covered by the metal sleeve conductor or a metal shield, so that signal transmission cannot be realized; if the temperature inside the insulation or the surface temperature of the product is detected for measurement, the deviation between the temperature measurement value and the real temperature value of the bushing conductor is large, and the monitoring effect is not obvious. Therefore, to the above technical problem, it is urgently needed that technical personnel in the field study and design an inner cone plug-in terminal structure of novel intelligent temperature measurement to realize that under the prerequisite that does not destroy product self insulation structure, does not influence the insulating properties of product self, inner cone plug-in terminal sleeve pipe conductor temperature is accurately monitored, reduces accident potential from this, and it is especially important in the healthy construction of the national firmly smart power grids.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that exists among the above-mentioned prior art, the utility model aims to provide an interior cone plug-in terminal of thermoscope, its aim at adopts built-in temperature measurement subassembly's mode to compress tightly the temperature of the indirect measurement terminal cable core of temperature of awl through the measurement, and send measured temperature signal to outside receiving equipment with wireless transmission mode ingeniously, with the realization at the non-destructive terminal insulation structure, do not influence under the prerequisite of product self insulating property, reach the purpose of accurate monitoring cable core temperature through measuring the real-time temperature that compresses tightly the awl, whether there is the potential safety hazard in the electric power system at cone plug-in terminal place in the realization is effectively monitored through temperature measurement, guarantee power equipment safe operation, have fine application prospect and popularization potentiality.
The utility model adopts the technical scheme as follows:
a temperature measuring type inner cone plug-in terminal comprises a sleeve arranged on power equipment, and a rubber insulation component, a temperature measuring component and a tail pipe system which are arranged on a cable;
the rubber insulation component is internally provided with a cavity running through two ends of the rubber insulation component and used for installing a cable; a cable core at the end part of the cable penetrates through one end of the cavity of the cable core, so that the temperature measuring component is arranged on the cable core;
the temperature measuring component comprises a compression cone, a bearing ring, a temperature measuring ring and a contact sleeved on the compression cone, the compression cone is arranged in a hollow manner, the compression cone is provided with a conical structure end and a cylindrical structure end positioned at the large-diameter end of the conical structure end, and an annular groove for installing the temperature measuring ring is formed at the cylindrical structure end; the bearing ring is embedded into the end part of the rubber insulation component, the middle part of the bearing ring is provided with a through hole for the cable core to pass through, at least one material of the bearing ring close to the through hole is a non-metal material capable of transmitting power supply signals, the bearing ring is tightly contacted with the temperature measuring ring, the temperature measuring ring is provided with an intelligent temperature measuring module for measuring the temperature of the compression cone, and the intelligent temperature measuring module is transmitted outwards through the bearing ring through wireless signals;
the sleeve is sequentially sleeved on the temperature measuring component and the rubber insulating component, a sleeve conductor connected with power equipment is arranged in the sleeve, and the sleeve conductor is connected with the contact through a contact finger arranged on the contact;
the tail pipe system is located on one side, away from the temperature measuring component, of the rubber insulating component and used for fixing the sleeve.
Preferably, the radial cross section of the compression cone is provided with a through groove with a through hole communicated at one side and a plurality of semi-through grooves which are symmetrically distributed and closed, and the through groove and the semi-through grooves are arranged along the axial direction of the conical structure end and the cylindrical structure end of the compression cone in an extending mode. Above-mentioned structural design is so that compress tightly the awl and have better elastic tension force, and then utilize the contact suit to compress tightly the awl outside and will compress tightly on the electric cable core, applicable in the electric cable core of different cross-sectional sizes to make and compress tightly awl and electric cable core reliable contact.
Preferably, the contact comprises a contact conductor and a contact finger, and a tapered through hole matched with the tapered structure end of the compression cone is arranged in the contact conductor; during installation, the contact conductor is sleeved outside the compression cone, so that the compression cone is compressed on the cable core. Correspondingly, the bushing conductor in the bushing has a receiving space for receiving the contact, which may be designed in a circular configuration, so that the contact extends into the receiving space and is connected to the bushing conductor by means of the contact fingers, thereby achieving the purpose of transmitting electrical energy.
Preferably, the bearing ring comprises a metal piece and a nonmetal piece sleeved on the inner side of the metal piece, and the assembly surface of the metal piece and the nonmetal piece is step-shaped. In the technical scheme, the design of the bearing ring ensures that a wireless signal can freely penetrate through the area and is transmitted to external receiving equipment on one hand, and prevents the material from deforming under stress when a contact is installed on the other hand; therefore, the bearing ring material selection and the structural design can effectively provide bearing points for the contact to be pressed and installed, the assembling surface of the bearing ring is designed in a step shape, the material stress deformation of the bearing ring when the contact is installed can be better prevented, the rubber insulation assembly can be effectively prevented from being stressed and deformed towards the inside of the accommodating cavity of the sleeve conductor under the locking action of the tail pipe system, and meanwhile, the wireless signals can be effectively ensured to be transmitted to external receiving equipment through the area.
Preferably, an annular sinking groove which is sunken inwards along the end face of the bearing ring embedded into one end face of the rubber insulating assembly is arranged on the end face of one end of the bearing ring, the sectional dimension of the annular sinking groove is matched with that of the cable insulating layer, so that the end face of the cable insulating layer is embedded into the annular sinking groove and is in fit contact with the end face of the cable insulating layer, and the annular sinking groove is coated on the inner side of the metal piece. By combining the bearing ring material selection and the structural design, the design of the annular sinking groove at least has the following beneficial effects: when the cable retracts after long-term operation, the air gap left after the cable retracts can be effectively shielded, and the problems that partial discharge occurs in the air gap or partial breakdown occurs are further avoided.
Preferably, the temperature measuring ring is of an annular structure with a through inner part and is in reliable contact with the bearing ring, the temperature measuring ring comprises an annular shell and an intelligent temperature measuring module positioned on the annular shell, the intelligent temperature measuring module comprises an energy taking power supply, a temperature sensor, a control chip and a wireless transmitting unit, the energy taking power supply and the temperature sensor are respectively and electrically connected with the control chip, the control chip is electrically connected with the wireless transmitting unit, and the temperature sensor is configured to be used for acquiring a temperature signal of the pressing cone; the control chip is configured to convert the acquired temperature signal into an electric signal and output the electric signal to the wireless transmitting unit; the wireless transmitting unit is configured to transmit the converted electrical signal to an external receiving device; the energy taking unit is configured to provide electric energy for the control chip and the wireless transmitting unit.
Preferably, the temperature sensor is located inside the annular shell, a plurality of heat conduction elastic sheets protruding inwards are arranged at the inner hole of the annular shell, an annular heat conductor connected with the plurality of heat conduction elastic sheets is arranged at the upper end of the annular shell, and the annular heat conductor is reliably connected with the temperature sensor, so that the temperature of the compression cone inside the annular shell is concentrated through the annular heat conductor and is transmitted to the temperature sensor.
Preferably, the rubber insulation component is of a conical structure, and one end, close to the tail pipe system, of the rubber insulation component is a large-diameter end; an annular groove is formed in the end part of the large-diameter end of the rubber insulation component, and a step surface is formed; the sleeve is internally provided with a conical inner cavity matched with the rubber insulation component, and the top of the conical inner cavity of the sleeve is provided with a high-voltage shield. The high-voltage shielding in the technical scheme mainly plays a role in electric field shielding and is particularly used for shielding air gaps at contact positions among the sleeve conductor, the bearing ring and the rubber insulating assembly in the sleeve.
Preferably, the rubber insulation component comprises a semiconductor rubber and an insulating rubber, wherein the semiconductor rubber starts from the end part of the large-diameter end of the rubber insulation component close to the cavity and extends beyond the step surface along the axial direction of the rubber insulation component to form a horn shape to be embedded in the insulating rubber. The semiconductor rubber is designed to improve stress concentration caused by electric field distortion at the fracture of the semi-conductive shielding layer outside the cable, and the insulating rubber has the function of resisting a high-voltage electric field.
Preferably, the tail pipe system comprises a support shell, a spring assembly and a locking assembly, wherein the spring assembly comprises a spring and a spring washer assembled at the end part of the spring, one end of the spring is fixed at the step surface in the annular groove, and the other end of the spring is fixed on the support shell; one end of the spring is assembled with a spring washer, is arranged on a step surface in the annular groove and is reliably contacted with the rubber insulation component through the spring washer; the spring assembly is mounted between the rubber insulation assembly and the support housing in a compressed state by the locking assembly. Therefore, after the sleeve is fixed on the supporting shell by using the locking assembly, a lasting and constant stress can be provided for the rubber insulating assembly, so that the rubber insulating assembly can be reliably contacted and has a certain acting force under different temperature changes after being sleeved into the conical inner cavity of the sleeve.
As described above, the present invention has at least the following advantages over the prior art:
1. the utility model overcomes current interior cone plug-in terminal is difficult to realize the technological problem of temperature measurement because of the structural constraint, according to compressing tightly the awl, load ring and the reasonable cooperation design of temperature measurement ring, the real-time temperature that compresses tightly the awl through the measurement of temperature measurement ring realizes indirect measurement cable core temperature, and transmit temperature information to outside receiving equipment through wireless transmitting unit after temperature measurement, and then whether the electric power system load at interior cone plug-in terminal place is normally monitored effectively through temperature detection in the realization, whether there is the potential safety hazard with the electric power equipment of being connected, guarantee electric power equipment safe operation, provide a reliable technical solution for the healthy construction of national smart power grids.
2. The utility model discloses can effectively solve the current interior cone plug-in terminal and be difficult to realize passing through the external technological problem of transmission of radio signal and outside receiving equipment with the temperature measurement signal, it adopts the bearing ring material design with temperature measurement ring in close contact with to have one kind at least be can power signal transmission's non-metallic material, so that intelligent temperature measurement module passes through radio signal through bearing ring non-metallic spare and with the external transmission of outside receiving equipment, thereby utilize the bearing ring will survey compress tightly awl temperature signal and draw forth the metal sleeve conductor region and realize temperature signal wireless transmission outside ingeniously, and then realize that interior cone plug-in terminal is wireless, passive temperature measurement, fine application prospect has.
3. The utility model discloses the cooperation design of rubber insulation subassembly and sleeve pipe and tail pipe system has fine insulating action, can effectively guarantee not destroy interior cone plug-in terminal insulation structure and original electric field structure, under the prerequisite that can not influence interior cone plug-in terminal insulating properties, realizes interior cone plug-in terminal cable core temperature accurate monitoring on line; the cone plug-in terminal is tightly and reliably matched, the structure manufacturing cost is low, the installation is convenient and reliable, the service performance and the safety performance of the cone plug-in terminal can be effectively improved, and the service life of the cone plug-in terminal is prolonged.
4. The utility model adopts a temperature measuring component, which installs a temperature measuring ring in the annular groove of the cylindrical structure end of the compression cone, and designs the conical structure end of the compression cone into an elastic tensioning structure, so that the compression cone can be compressed on cable cores after the conical structure end sleeve is provided with a contact, and the temperature measuring component is suitable for cable cores with different cross sections, so as to realize the reliable contact between the compression cone and the cable cores; and if the temperature measurement component is invalid, only the contact needs to be dismantled, the compression cone is taken down, and the temperature measurement component is replaced again, other elements do not need to be replaced, the disassembly and the assembly are convenient, and the replacement and maintenance cost in the later period can be effectively reduced.
Drawings
The invention will be described by way of example only and with reference to the accompanying drawings, in which
Fig. 1 shows an installation diagram of a temperature-measuring type inner cone plug-in terminal according to an embodiment of the present invention;
fig. 2 shows a schematic view of a temperature measuring type inner cone plug-in terminal middle sleeve according to an embodiment of the present invention;
fig. 3A shows a schematic structural diagram of the compression cone of fig. 1 according to an embodiment of the present invention;
fig. 3B shows a top view of the compaction cone of fig. 3A in accordance with an embodiment of the present invention;
fig. 4A shows a cross-sectional view of the force-bearing ring of fig. 1 according to an embodiment of the present invention;
fig. 4B shows a bottom view of the force-bearing ring of fig. 4A according to an embodiment of the present invention;
FIG. 5A illustrates an installation diagram of the temperature ring of FIG. 1 according to an embodiment of the present invention;
fig. 5B illustrates a cross-sectional view of the temperature ring of fig. 5A, in accordance with an embodiment of the present invention;
FIG. 6 illustrates a schematic diagram of the operation of the intelligent temperature measurement module of FIG. 1 according to an exemplary embodiment of the present invention;
figure 7 shows a schematic view of the contact of figure 1 in accordance with an embodiment of the present invention;
fig. 8 shows a schematic view of the rubber insulation assembly of fig. 1 according to an embodiment of the present invention;
fig. 9 shows a schematic view of the tailpipe system of fig. 1 in accordance with an embodiment of the present invention.
Description of reference numerals: 1-a sleeve; 11-a bushing conductor; 12-high voltage shielding; 13-a conical lumen; 14-a threaded sleeve hole; 2-a temperature measuring component; 21-a contact; 211-a stylus; 212-contact conductors; 22-a compaction cone; 221-tapered structure end; 222-cylindrical structure end; 223-an annular groove; 224-through slots; 225-half through groove; 23-bearing ring; 231-a through hole; 232-annular sinking groove; 233-metal part; 234-a non-metallic element; 235-assembly surfaces of metal parts and non-metal parts; 24-temperature measuring ring; 241-energy taking power supply; 242-temperature measuring unit; 2421-heat conducting elastic sheet; 2422-an annular heat conductor; 243-a wireless transmitting unit; 244-an annular housing; 3-a rubber insulation component; 31-a semiconductor rubber; 32-insulating rubber; 33-an annular groove; 34-step surface; 4-a tailpipe system; 41-spring washer; 42-a spring; 43-a support housing; 44-screw set; 5-a cable; 51-cable insulation; 52-cable core.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract) may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The exemplary embodiment of the present invention is substantially as shown in fig. 1 to 9: the embodiment provides an inner cone plug-in terminal with temperature measurement, which comprises a sleeve 1 installed on power equipment, and a rubber insulation component 3, a temperature measurement component 2 and a tail pipe system 4 installed on a cable. Wherein, the middle part of the rubber insulation component 3 is provided with a cavity running through the two ends thereof and used for sleeving and installing the cable 5; and the cable core 52 at the end part of the cable passes through the upper end of the cavity of the cable core, so that the temperature measuring component 2 is arranged on the cable core 52; specifically, the temperature measuring component 2 comprises a pressing cone 22, a bearing ring 23, a temperature measuring ring 24 and a contact 21 sleeved on the pressing cone 22, the pressing cone 22 is arranged in a hollow manner, the pressing cone 22 is provided with a conical structure end 221 and a cylindrical structure end 222 located at one end of the conical structure end 221 with a large diameter, the conical structure end 221 and the cylindrical structure end 222 are integrally connected, a step is formed at the connection position of the conical structure end 221 and the cylindrical structure end 222, and an annular groove 223 used for installing the temperature measuring ring 24 is formed at the cylindrical structure end 222; the bearing ring 23 is closely contacted with the temperature measuring ring 24, the bearing ring 23 positioned at the bottom of the temperature measuring ring 24 is embedded into the upper end part of the rubber insulating component 3 and is contacted with the end surface of the cable insulating layer 51 arranged in the rubber insulating component 3, the middle part of the bearing ring 23 is provided with a through hole 231 for the cable core 52 to pass through, at least one material of the bearing ring 23 close to the through hole 231 is a non-metal material capable of transmitting power supply signals, and the temperature measuring ring 24 positioned at the upper end of the bearing ring 23 is provided with an intelligent temperature measuring module for measuring the compression cone 22, so that the intelligent temperature measuring module is transmitted with external receiving equipment through the bearing ring 23 by wireless signals.
After the temperature measuring component 2 is installed on the cable core 52, the sleeve 1 is sequentially sleeved on the temperature measuring component 2 and the rubber insulating component 3, a sleeve conductor 11 connected with electric power equipment is embedded in the upper end of the sleeve 1, and the sleeve conductor 11 is connected with a contact 21 in the temperature measuring component 2 through a contact finger 211 installed on the contact 21; specifically, as shown in fig. 7, the contact 21 includes a contact conductor 212 and a contact finger 211, the contact finger 211 is mounted on the contact conductor 212 through a mounting groove on the cylindrical structure surface of the contact conductor 212, and the lower end of the sleeve conductor 11 in the sleeve 1 has a circular structure chamber with an opening, so that the contact 21 extends into the circular structure chamber and is connected with the sleeve conductor 11 on the sleeve 1 through the contact finger 211 to transmit electric energy. After the sleeve 1 is assembled, the sleeve 1 is fixed by a tail pipe system 4 which is positioned on one side of the rubber insulating component 3 far away from the temperature measuring component 2, so that the inner cone plug-in terminal is formed.
According to the present invention, as shown in fig. 3A and 3B, the radial cross section of the pressing cone 22 in the temperature measuring assembly 2 provided by the embodiment of the present invention is provided with a through groove 224 through which one side is communicated and a plurality of semi-through grooves 225 which are symmetrically distributed and sealed, and the through groove 224 and the semi-through grooves 225 are both arranged along the axial direction of the conical structure end 221 and the cylindrical structure end 222 of the pressing cone 22; meanwhile, a tapered through hole matched with the tapered structure end 221 of the pressing cone 22 is formed in the contact conductor 212, and when the contact conductor 212 is installed, the pressing cone 22 is tightly pressed on the cable core 52 by sleeving the contact conductor 212 on the outside of the pressing cone 22, so that the purpose of electric energy transmission is achieved; the pressing cone 22 has a good elastic tension force, and the contact 21 is sleeved outside the pressing cone 22 to press the pressing cone 22 onto the cable core 52, so that the pressing cone 22 can be suitable for the cable cores 52 with different cross sections, and the pressing cone 22 can be reliably contacted with the cable cores 52.
According to the present invention shown in fig. 4A and 4B, as a preferred solution of this embodiment, the force-bearing ring 23 provided in the embodiment of the present invention includes a metal member 233 and a non-metal member 234 sleeved inside the metal member 233, and an assembling surface 235 of the metal member 233 and the non-metal member 234 is step-shaped; the bearing ring 23 has two design purposes: on one hand, the wireless signals can be freely transmitted to an external receiving device through the area, and on the other hand, the material is prevented from being stressed and deformed when the contact 21 is installed; therefore, in order to better prevent the material from deforming under stress when the contact 21 is installed, and thus to better achieve the above two functions, the metal member 233 provided in the present embodiment is preferably a non-magnetic metal such as aluminum or copper, and the non-metal member 234 is preferably nylon or plastic. The material selection and the structural design of the bearing ring 23 are only one of the preferable examples of the embodiment, and are not particularly limited to this, the material selection and the structural design can be adjusted according to the purpose, the design of the force bearing ring 23 can effectively provide a force bearing point when the contact 21 is installed in a pressing way, the step-like design of the mounting surface 235 may better prevent material deformation during installation of the contact 21, and can effectively prevent the rubber insulation component 3 from being deformed towards the inside of the accommodating cavity of the casing conductor 11 under the locking action of the tail pipe system 4, meanwhile, the wireless signal can be effectively ensured to be transmitted to external receiving equipment through the area, the force bearing ring 23 is convenient to install and has remarkable effect, the technical problem of restriction of the space structure of the inner cone plug-in terminal can be effectively avoided by the structural design and installation, the occupied space is small, and the design is ingenious and reasonable.
As another preferred example of the force-bearing ring 23 of this embodiment, an annular sinking groove 232 is provided at an end face of the force-bearing ring 23 embedded in the rubber insulating component 3, the cross-sectional dimension of the annular sinking groove 232 is adapted to the cross-sectional dimension of the cable insulating layer 51, so that the end face of the cable insulating layer 51 is embedded in the annular sinking groove 232 and is in fit contact with the end face thereof, and the annular sinking groove 232 is wrapped inside the metal member 233. By combining the material selection and the structural design of the bearing ring 23, the design of the annular sinking groove 232 at least has the following beneficial effects: when the cable is retracted after long-term operation, the air gap left after the cable is retracted can be effectively shielded, so that the problems that partial discharge occurs in the air gap or partial breakdown occurs and the like are avoided, the service life of the inner cone plug-in terminal can be effectively prolonged, and the structural design and the use effect are obvious.
According to the present invention, as shown in fig. 5A and 5B, the temperature measuring ring 24 provided in this embodiment is an annular structure with a through interior, and the temperature measuring ring 24 is installed at the upper end of the bearing ring 23 and is in reliable contact with the non-metal part 234 of the bearing ring 23, as shown in fig. 6, the temperature measuring ring 24 provided in this embodiment includes an annular housing 244 and an intelligent temperature measuring module located on the annular housing 244, and the intelligent temperature measuring module includes a temperature sensor 242, an energy-taking power source 241, a control chip and a wireless transmitting unit 243, the energy-taking power source 241 and the temperature sensor 242 are respectively electrically connected with the control chip, and the control chip is electrically connected with the wireless transmitting unit 243; the temperature sensor 242 is installed inside the annular housing 244, a plurality of heat conduction elastic sheets 2421 protruding inwards are fixedly installed at the inner hole of the annular housing 244, and an annular heat conductor 2422 connected with the plurality of heat conduction elastic sheets 2421 protruding inwards is installed at the upper end of the annular housing 244; the annular heat conductor 2422 is reliably connected with the temperature sensor, so that the temperature of the pressing cone 22 inside the annular shell 244 is concentrated and transmitted to the temperature sensor through the annular heat conductor 2422; therefore, after the temperature measuring ring 24 is assembled, the heat conducting elastic sheet 2421 is compressed to be in close and reliable contact with the pressing cone 22, the temperature of the pressing cone 22 is transmitted to the annular heat conductor 2422 in the temperature measuring ring, and the temperature sensor directly measures the temperature of the annular heat conductor to collect the temperature of the pressing cone 22 at the inner side of the annular shell; on the other hand encapsulates inside temperature sensor to annular housing, avoids high accuracy sensor and surveyed conductor direct contact, still can effectively prevent to be surveyed the conductor expend with heat and contract with cold in-process and damage temperature sensor or appear sensor and surveyed the conductor contact failure and have measuring error's technical problem, this structural design is ingenious reasonable.
The temperature sensor 242 is thus configured for acquiring a temperature signal of the compression cone 22; the control chip is configured to convert the acquired temperature signal into an electric signal and output the electric signal to the wireless transmitting unit; the wireless transmitting unit 243 is configured to transmit the converted electrical signal to an external receiving device; the energy obtaining unit 241 is configured to provide electric energy for the control chip and the wireless transmitting unit, and specifically, an energy ring in a ring shape is disposed inside the annular housing 244, and when an operating current passes through a connecting conductor inside the annular housing of the temperature measuring ring, the energy ring has a current flowing through it and rectifies the current by using the electromagnetic induction principle, so as to provide for the circuit operation of the control chip and the wireless transmitting unit 243. The intelligent temperature measurement module is realized in the following mode: the temperature sensor 242 is closely contacted with the compaction cone 22 to collect the temperature of the contact conductor; the control chip converts the temperature signal into a corresponding electric signal and then transmits the electric signal to a data concentrator of a terminal external receiving device through the wireless transmitting unit so as to realize that the data concentrator displays the temperature signal of the measured conductor in real time; furthermore, the data concentrator is simultaneously provided with a temperature alarm unit and a temperature display unit, so that when the temperature is higher than a preset value, automatic alarm can be realized.
From above, the temperature measurement theory of operation of this embodiment is: the temperature of the cable core 52 in the inner cone plug-in terminal is transmitted to the compression cone 22, the temperature signal of the compression cone 22 is obtained through the temperature measuring component 2, the temperature signal is converted into an electric signal, and the temperature information is transmitted to an external receiving device through the wireless transmitting unit 243 of the temperature measuring component; the measured temperature signal of the compression cone 22 is led out of the area of the metal sleeve conductor 11 by skillfully utilizing the nonmetal part 234 made of nonmetal materials capable of transmitting power supply signals in the bearing ring 23, so that the external wireless transmission of the temperature signal is realized, the technical scheme design can effectively avoid damaging the self insulation structure of the terminal, thereby achieving the purpose of accurately monitoring the temperature of the cable core 52 by measuring the real-time temperature of the compression cone 22 skillfully under the condition of not influencing the self insulation performance, and ensuring the safe operation of the power equipment where the inner cone plug-in terminal is positioned.
According to the present invention, as shown in fig. 1, 8 and 9, in order to ensure that the temperature measuring type internal cone plug-in terminal of the present embodiment has a good insulating effect, the rubber insulator provided in the present embodiment is specifically in a conical structure, and one end of the rubber insulator close to the temperature measuring component 2 is a small-diameter end, and one end of the rubber insulator close to the tail pipe system 4 is a large-diameter end; an annular groove 33 which extends along the end face of the rubber insulation component 3 is formed at the end part of the large-diameter end of the rubber insulation component 3, and a step surface 34 is formed; meanwhile, the lower end of the sleeve 1 is provided with a conical inner cavity 13 matched with the rubber insulation component 3, the conical inner cavity 13 is used for installing the rubber insulation component 3, and the conical inner cavity 13 is used for installing the rubber insulation component 3; and a high-voltage shield 12 is embedded around the top of the conical inner cavity 13 of the sleeve 1; in this embodiment, the high voltage shield 12 mainly plays a role of shielding an electric field, and is specifically used for shielding an air gap at a contact position between the inner casing conductor 11 of the casing 1, the bearing ring 23 and the rubber insulation component 3.
Meanwhile, the rubber insulation component 3 provided by the embodiment includes a semiconductor rubber 31 and an insulation rubber 32, the semiconductor rubber starts from the end part of the large diameter end of the rubber insulation component 3 close to the cavity and extends beyond the step surface 34 along the axial direction to be embedded in the insulation rubber 32 in a horn shape; the above-mentioned semiconductive rubber 31 is designed to improve stress concentration caused by electric field distortion at the break of the semiconductive shield layer outside the cable, and the insulating rubber 32 is designed to withstand a high-voltage electric field.
In order to ensure that the temperature measuring type inner cone plug-in terminal connecting structures are more stable and reliable, the tail pipe system 4 provided by the embodiment comprises a supporting shell 43, a spring assembly and a locking assembly, wherein the spring assembly comprises a spring 42 and a spring washer 41 assembled at the end part of the spring, the upper end of the spring 42 is fixed on a step surface 34 in an annular groove 33, and the lower end of the spring 42 is fixed on the supporting shell 43; the spring is installed on the step surface 34 in the annular recess through one end equipped with a spring washer 41 and is reliably contacted with the rubber insulation component 3 through the spring washer 41; and the spring assembly is installed between the rubber insulating assembly 3 and the supporting housing 43 in a compressed state by a locking assembly, and particularly, as a preferred example of the present embodiment, the present embodiment provides a locking assembly including a screw set 44 installed on the supporting housing 43, meanwhile, the lower end of the sleeve 1 is provided with a sleeve threaded hole 14 matched with the screw group 44, the sleeve 1 is fixedly assembled on the tail pipe system 4 through the matching connection of the screw group 44 and the sleeve threaded hole 14, and a continuous elastic acting force is applied to the rubber insulation component 3 under the action of the spring component, so that the connection between the temperature measuring component 2 and the rubber insulation component 3 is more reliable, after the sleeve 1 is fixed on the supporting shell 43 by the screw set 44, a permanent and constant stress can be provided for the rubber insulating component 3, meanwhile, the rubber insulation component 3 can be reliably contacted and have certain acting force under different temperature changes after being sleeved into the conical inner cavity 13 of the sleeve 1.
The structure of each subassembly in the interior cone plug-in terminal just is the illustration of exemplary ground structure, and the subassembly structure can be adjusted according to above-mentioned design idea to technical personnel in the field, as long as can realize the same or similar function and fall into the utility model discloses an in the protection scope.
On the other hand, fig. 1 of the present embodiment shows a schematic structural diagram of the temperature measuring assembly 2 and the cable core 52 according to the exemplary embodiment of the present invention after being installed, and according to the present embodiment, the specific installation method thereof includes the following steps:
firstly, removing an outer sheath, armor, a metal shield and an outer semi-conductive shield of a cable according to requirements, and grinding burrs and semi-conductive particles on an insulating layer of the cable; removing the excess cable insulation to expose the cable core 52;
step two, sleeving the tail pipe system 4 into the cable, and exposing the cable core 52 above the sleeve 1 system;
step three, sleeving the rubber insulation component 3 on the cable above the tail pipe system 4; so that the cable core 52 extends from the upper end of the cavity of the rubber insulation component 3 to be exposed above the cavity;
step four, the bearing ring 23 is sleeved on the cable and embedded into the upper end of the rubber insulation component 3, so that the end face of the annular sinking groove 232 at the bottom of the bearing ring is in contact with the end face of the cable insulation layer 51 arranged in the rubber insulation component 3;
step five, sleeving the pressure cone on the cable core 52 and reliably contacting with the bearing ring 23;
step six, sleeving the contact 21 from the small-diameter end of the conical structure of the pressure cone, and pressing the contact 21 downwards to enable the pressing cone 22 to be pressed on the cable core 52;
step seven, pushing the installed cable terminal assembly into the installed sleeve 1 on the power equipment so that the contact 21 is reliably connected with the inner conductor of the sleeve 1 through the contact finger 211;
and step eight, aligning and locking the tail pipe system 4 with the sleeve threaded hole 14 reserved on the power equipment sleeve 1 through the screw group 44.
The inner cone plug-in terminal is simple in structure and convenient and fast to install and operate; and if the temperature measuring component 2 fails, only the contact 21 needs to be dismantled, the pressing cone 22 is taken down, and the temperature measuring component 2 is replaced again, so that other elements do not need to be replaced, the dismounting and the mounting are convenient, and the replacement and the maintenance cost in the later period can be effectively reduced.
To sum up, the utility model discloses internal cone plug-in terminal of temperature measurement type is to being difficult to realize the technological problem of temperature measurement among the prior art because the terminal structure restriction, according to pressing awl 22, bearing ring 23 and the reasonable cooperation design of temperature measurement ring 24, realizes indirectly measuring cable core 52 temperature through measuring the real-time temperature that presses awl 22, and transmit temperature information to outside receiving equipment through temperature measurement subassembly 2 self wireless transmitting unit 243 after the temperature measurement, and then realize effectively monitoring through temperature detection whether the electric power system load that interior cone plug-in terminal located is normal; the technical difficulty of the solution is as follows: it is difficult to pass through radio signal with temperature signal and externally transmits to the limit of current interior awl plug-in terminal structure material, the utility model discloses adopt metalwork 233 and non-metalwork 234's cooperation mode with load ring 23 ingeniously to make intelligent temperature measurement module pass through radio signal and through load ring 23 non-metalwork 234 and externally transmit with outside receiving equipment, and then will record compress tightly awl 22 temperature signal and draw forth metal sleeve conductor 11 region and realize temperature signal and to outside wireless transmission, and then realize interior awl plug-in terminal wireless, passive temperature measurement.
And according to the utility model discloses rubber insulation assembly and sleeve pipe and tail pipe system 4's cooperation design has fine insulating effect, can effectively guarantee not destroy interior cone plug-in terminal insulation structure and original electric field structure, can not influence under the prerequisite of interior cone plug-in terminal insulating properties, realizes interior cone plug-in terminal cable core 52 temperature accurate monitoring on line to guarantee power equipment safe operation. Simultaneously the utility model discloses interior cone plug-in terminal of temperature measurement type has that structural connection is reliable and stable, installation simple operation, maintenance cost are low characteristics, has fine application prospect and popularization potentiality in the practice.
The present invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.
Claims (10)
1. The utility model provides an interior cone plug-in terminal of thermometric type which characterized in that: the terminal comprises a sleeve arranged on the power equipment, and a rubber insulation component, a temperature measurement component and a tail pipe system which are arranged on the cable;
the rubber insulation component is internally provided with a cavity running through two ends of the rubber insulation component and used for installing a cable; a cable core at the end part of the cable penetrates through one end of the cavity of the cable core, so that the temperature measuring component is arranged on the cable core;
the temperature measuring component comprises a compression cone, a bearing ring, a temperature measuring ring and a contact sleeved on the compression cone, the compression cone is arranged in a hollow manner, the compression cone is provided with a conical structure end and a cylindrical structure end positioned at the large-diameter end of the conical structure end, and an annular groove for installing the temperature measuring ring is formed at the cylindrical structure end; the bearing ring is embedded into the end part of the rubber insulation component, the middle part of the bearing ring is provided with a through hole for the cable core to pass through, at least one material of the bearing ring close to the through hole is a non-metal material capable of transmitting power supply signals, the bearing ring is tightly contacted with the temperature measuring ring, the temperature measuring ring is provided with an intelligent temperature measuring module for measuring the temperature of the compression cone, and the intelligent temperature measuring module is transmitted outwards through the bearing ring through wireless signals;
the sleeve is sequentially sleeved on the temperature measuring component and the rubber insulating component, a sleeve conductor connected with power equipment is arranged in the sleeve, and the sleeve conductor is connected with the contact through a contact finger arranged on the contact;
the tail pipe system is located on one side, away from the temperature measuring component, of the rubber insulating component and used for fixing the sleeve.
2. The temperature-measuring type internal-cone pluggable terminal according to claim 1, characterized in that: the radial cross section that compresses tightly the awl is the logical groove that has a unilateral through-going and a plurality of symmetric distribution and confined semi-through groove, lead to the groove with semi-through groove all along the toper structure end and the cylindrical structure end axial direction that compress tightly the awl extend the setting.
3. The temperature measuring type inner cone pluggable terminal according to claim 2, wherein: the contact comprises a contact conductor and a contact finger, and a conical through hole matched with the conical structure end of the compression cone is formed in the contact conductor; when the device is installed,
the contact conductor is sleeved outside the compression cone, so that the compression cone is compressed on the cable core.
4. The temperature-measuring type internal-cone pluggable terminal according to claim 1, characterized in that: the bearing ring comprises a metal piece and a non-metal piece sleeved on the inner side of the metal piece, and the assembly surface of the metal piece and the non-metal piece is step-shaped.
5. The temperature measuring type inner cone pluggable terminal according to claim 4, wherein: the end face of one end, embedded into the rubber insulation component, of the bearing ring is provided with an annular sinking groove which is sunken along the end face of the bearing ring, the sectional dimension of the annular sinking groove is matched with that of the cable insulation layer, so that the end face of the cable insulation layer is embedded into the annular sinking groove and is in matched contact with the end face of the cable insulation layer, and the annular sinking groove is coated on the inner side of the metal piece.
6. The temperature measuring type inner cone plug-in terminal according to any one of claims 1 to 5, wherein: the temperature measuring ring is of an annular structure with a through inner part and is in reliable contact with the bearing ring, the temperature measuring ring comprises an annular shell and an intelligent temperature measuring module positioned on the annular shell, the intelligent temperature measuring module comprises an energy taking power supply, a temperature sensor, a control chip and a wireless transmitting unit, the energy taking power supply and the temperature sensor are respectively and electrically connected with the control chip, the control chip is electrically connected with the wireless transmitting unit, and the temperature sensor is configured to be used for collecting a temperature signal of the pressing cone; the control chip is configured to convert the acquired temperature signal into an electric signal and output the electric signal to the wireless transmitting unit; the wireless transmitting unit is configured to transmit the converted electrical signal to an external receiving device; the energy taking unit is configured to provide electric energy for the control chip and the wireless transmitting unit.
7. The temperature-measuring type internal-cone pluggable terminal according to claim 6, wherein: the temperature sensor is positioned in the annular shell, a plurality of heat conduction elastic sheets protruding inwards are arranged at the inner hole of the annular shell, an annular heat conductor connected with the plurality of heat conduction elastic sheets is arranged at the upper end of the annular shell, and the annular heat conductor is reliably connected with the temperature sensor, so that the temperature of the compression cone in the annular shell is concentrated through the annular heat conductor and is transmitted to the temperature sensor.
8. The temperature-measuring type internal-cone pluggable terminal according to claim 6, wherein: the rubber insulation component is of a conical structure, and one end, close to the tail pipe system, of the rubber insulation component is a large-diameter end; an annular groove is formed in the end part of the large-diameter end of the rubber insulation component, and a step surface is formed; the sleeve is internally provided with a conical inner cavity matched with the rubber insulation component, and the top of the conical inner cavity of the sleeve is provided with a high-voltage shield.
9. The temperature-measuring type internal-cone pluggable terminal according to claim 8, wherein: the rubber insulation component comprises semiconductor rubber and insulation rubber, wherein the semiconductor rubber starts from the position, close to the cavity, of the large-diameter end of the rubber insulation component and extends beyond the step surface along the axis direction to form a horn shape to be embedded in the insulation rubber.
10. The temperature measuring type internal cone pluggable terminal according to claim 9, wherein: the tail pipe system comprises a supporting shell, a spring assembly and a locking assembly, wherein the spring assembly comprises a spring and a spring washer assembled at the end part of the spring, one end of the spring is fixed at the step surface in the annular groove, and the other end of the spring is fixed on the supporting shell; one end of the spring is assembled with a spring washer, is arranged on a step surface in the annular groove and is reliably contacted with the rubber insulation component through the spring washer; the spring assembly is mounted between the rubber insulation assembly and the support housing in a compressed state by the locking assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020242363.7U CN211347156U (en) | 2020-03-03 | 2020-03-03 | Temperature measurement type inner cone plug-in terminal |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020242363.7U CN211347156U (en) | 2020-03-03 | 2020-03-03 | Temperature measurement type inner cone plug-in terminal |
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| CN211347156U true CN211347156U (en) | 2020-08-25 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111198050A (en) * | 2020-03-03 | 2020-05-26 | 成都盛帮双核科技有限公司 | Intelligent temperature measuring type inner cone plug-in terminal |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111198050A (en) * | 2020-03-03 | 2020-05-26 | 成都盛帮双核科技有限公司 | Intelligent temperature measuring type inner cone plug-in terminal |
| CN111198050B (en) * | 2020-03-03 | 2024-08-16 | 成都盛帮双核科技有限公司 | Intelligent temperature measurement type inner cone plug-in terminal |
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