CN211205552U - Metal enclosed switch main bus temperature measuring device - Google Patents
Metal enclosed switch main bus temperature measuring device Download PDFInfo
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- CN211205552U CN211205552U CN202020243804.5U CN202020243804U CN211205552U CN 211205552 U CN211205552 U CN 211205552U CN 202020243804 U CN202020243804 U CN 202020243804U CN 211205552 U CN211205552 U CN 211205552U
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Abstract
The utility model discloses a metal enclosed switch main bus temperature measuring device, relating to the technical field of power equipment temperature measurement; the temperature measuring device comprises a sleeve, an insulating boot, a temperature measuring plug and a protective cap, wherein a first conductor penetrating through two ends of the sleeve is arranged in the sleeve, and two ends of the first conductor are fixedly connected with a main bus and the temperature measuring plug respectively; the sleeve and the temperature measuring plug are sleeved in the insulating boot, and the insulating boot is connected with the external ground to enable the insulating boot to form a ground layer; the temperature measuring plug comprises a second conductor and a shell, and the second conductor is connected with the first conductor; an intelligent temperature measuring module for measuring the temperature of the second conductor is embedded in the temperature measuring plug and is externally connected through a wireless signal; through implementing this technical scheme, can effectively solve the current difficult technical problem that is difficult to monitor the interior main bus temperature of metal enclosed switch box, can effectively realize the online accurate monitoring of metal enclosed switch main bus, have structural connection reliable and stable, installation simple operation, characteristics that the maintenance cost is low, have fine application prospect.
Description
Technical Field
The utility model relates to a power equipment temperature measurement technical field, more specifically say, relate to a be applied to metal enclosed switch's main bus temperature measuring device.
Background
The metal closed switch equipment is a new generation of electric appliance product which is automatically designed and successfully developed by introducing advanced technology according to the domestic rural power and regional network transformation requirements, and all technical performance indexes of the metal closed switch equipment can reach the IEC298 and GB3906 standards through strict type tests and long-term operation examination. The metal sealing switch has the remarkable characteristics of high dustproof, anti-theft and anti-explosion level, small volume, stable performance, difficulty in being influenced by external environment, no pollution and the like, is suitable for an alternating current 50HZ and 10kV power network, is used for receiving and distributing electric energy, is mainly applied to various different occasions such as power plants, transformer substations, petrochemical industry, metallurgical steel rolling, light industrial textiles, industrial and mining enterprises, residential districts, high-rise buildings and the like, and is more and more favored by users.
In recent years, along with the acceleration of urbanization, the electric load of a user is greatly increased, the transmission capacity is increased due to the continuous increase of the main transformer capacity, and whether the transmission capacity can be continuously increased by the original metal sealed switch equipment or whether the newly used metal sealed switch equipment has potential safety hazards does not have good judgment standards in practical application; however, it is found that the metal-enclosed switchgear has the characteristic of poor heat dissipation effect, and particularly when a short circuit occurs in the metal-enclosed switchgear or a cable line is aged, the heating phenomenon is very easy to occur and is not easy to be found in time, and the heating phenomenon is rapidly increased along with the increase of the bus current, which endangers the safety operation and the power supply reliability of the power equipment, and a combustion accident is caused in a serious case. Therefore, the temperature of the main bus of the metal door closing switch is monitored in real time, and the temperature rise is used as one of the bases for judging the operation state of the metal sealing switch.
However, according to the inventor of the present application, in the process of implementing the embodiment of the present invention, it is found that the following technical problems exist in the temperature measurement of the main bus of the metal-enclosed switchgear: the main bus of the metal closed switch equipment is completely closed to the inside of the metal box body, the main bus serves as an electric energy channel for transmitting each power distribution requirement, and high voltage and strong current are carried during transmission operation, so that the requirements of wireless transmission of signals and insulation safety distance cannot be met by embedding the temperature sensor on the main bus.
SUMMERY OF THE UTILITY MODEL
For solving the technical problem that exists among the above-mentioned prior art, an object of the utility model is to provide a metal enclosed switch main bus temperature measuring device, its aim at utilizes temperature measuring device to draw metal enclosed switch main bus temperature to the box outside, and come indirect measurement metal enclosed switch's main bus temperature through measuring its temperature signal, metal enclosed switch self electric insulation problem when can effectively solving main bus temperature signal and drawing forth, the insulating and sealed effect of equipment has been played simultaneously, thereby make through the main bus temperature measurement, it becomes possible as one of the running state foundation of judging metal enclosed switch by its temperature rise, and then real time monitoring and guarantee metal enclosed switch equipment safe operation, have fine application prospect and popularization potentiality.
The utility model adopts the technical scheme as follows:
a temperature measuring device for a main bus of a metal enclosed switch comprises a sleeve, an insulating boot, a temperature measuring plug and a protective cap, wherein the temperature measuring device is arranged at an opening of a metal enclosed switch box body through the sleeve;
a first conductor penetrating through two ends of the sleeve is arranged in the sleeve, a protective layer is formed on the periphery of the sleeve penetrating along the first conductor, one end of the first conductor is fixedly connected with a main bus in the metal closed switch, and the other end of the first conductor penetrates through the sleeve and is fixedly connected with the temperature measuring plug; the insulating boot is arranged in a hollow mode, a sleeve and a temperature measuring plug, which extend out of one end of the opening of the metal closed switch box body, are sleeved in the insulating boot, and the insulating boot is connected with the external ground to form a ground layer; the temperature measuring plug comprises a second conductor and a shell, one end of the second conductor is coated in the shell, and the other end of the second conductor extends out of the shell to be connected with the first conductor; an intelligent temperature measuring module for measuring the temperature of the second conductor is embedded in the temperature measuring plug and is externally connected through a wireless signal; the protective cap covers the end face of one side of the insulating boot, where the temperature measuring plug is installed, so that the temperature measuring plug is completely covered inside the grounding layer.
The working principle of the technical scheme is as follows: the temperature of a main bus in the metal closed switch box body is transmitted to a first conductor in the sleeve, then the temperature is transmitted to a second conductor in the temperature measuring plug through the first conductor, and then the temperature on the second conductor is measured through an intelligent temperature measuring module arranged in the temperature measuring plug to indirectly measure the temperature of the main bus in the metal closed switch device, and meanwhile, the insulation boot is connected with the external ground for solving the problem of self electrical insulation of the metal closed switch when a main bus temperature signal is led out. Therefore, the temperature of the main bus can be measured, and the temperature rise of the main bus can be used as one of the basis for judging the operation state of the metal sealing switch, so that the temperature of the main bus of the metal sealing switch can be monitored in real time, the safe operation of the metal sealing switch equipment can be effectively guaranteed, and the metal sealing switch equipment has good application prospect and popularization potential.
Preferably, the middle part of the protective layer is provided with an annular shielding ring surrounding the first conductor, and the shielding ring is provided with a grounding hole which penetrates through the protective layer outwards, so that the shielding ring is connected with the external ground to ensure that the shielding ring is always at the ground potential. The design purpose of the shielding ring in the technical scheme is to shield sharp-angled discharge of a tool and a clamp fixed outside the protective layer so as to further ensure the insulativity of the metal closed switch when a main bus temperature signal is led out.
Preferably, a boss is arranged on the outer side wall of the sleeve close to one end of the main bus, a first step surface and a second step surface are formed on the outer side wall of the sleeve, and the sleeve is fixed at the opening of the metal closed switch box body through the boss; and an annular groove for installing a sealing ring is arranged on the second step surface, so that the inside and the outside of the opening of the metal sealing switch are sealed. Specifically, in the technical scheme, the sleeve is arranged on the outer side of the opening of the metal sealed switch box body through the boss, and the boss is convenient to fix the sleeve at the opening of the metal sealed switch box body on one hand and install the sealing ring to seal the inside and the outside of the metal sealed switch at the opening on the other hand; the installation operation is effectively realized, and the sealing effect of the equipment is also realized.
Preferably, along the axial direction of the sleeve, two ends of the shielding ring extend from the position between the first step surface and the second step surface to two sides of the shielding ring and respectively exceed the horizontal planes where the first step surface and the second step surface are located. Therefore, by combining the technical scheme, the design of the shielding ring can particularly solve the problem of sharp-angled discharge at the opening of the metal closed switch box body, and the shielding ring has a good shielding effect so as to further ensure the insulation property of equipment.
Preferably, the outer side wall of the sleeve is further provided with a step extending along the boss direction, a third step surface is formed, and a matching surface matched with the third step surface is arranged at the end part of the insulating boot connected with the sleeve; the temperature measuring plug is provided with a convex part extending outwards, a fourth step surface is formed on the temperature measuring plug, and a matching surface matched with the fourth step surface is arranged at the end part of the insulating boot connected with the temperature measuring plug. Therefore, the sleeve and the temperature measuring plug are matched with the matching surfaces at the two ends of the insulating boot through the third step surface and the fourth step surface respectively, and the mounting position of the insulating boot is determined.
Preferably, the insulating boot is of a hollow structure with conical inner cavities at two ends, so that the sleeve and the temperature measuring plug are respectively inserted into the conical inner cavities at two ends of the insulating boot, and are respectively matched with matching surfaces at two ends of the insulating boot through the third step surface and the fourth step surface, so that the sleeve, the temperature measuring plug and the insulating boot are positioned and installed. The positioning and mounting structure is simple in design, the sleeve, the temperature measuring plug and the insulating boot can be conveniently positioned and mounted, and the insulation and the sealing performance of the connection of the sleeve and the temperature measuring plug can be guaranteed through the design of the conical inner cavity, the step surface and the matching surface.
Preferably, the insulating boot has an inner shielding layer, an insulating layer and an outer shielding layer from inside to outside, the inner shielding layer is located at a joint of the temperature measuring plug and the conductor, and the outer shielding layer covers the outside of the insulating layer and is connected with the ground through an outwardly arranged protruding structure. The inner shielding layer is designed for effectively shielding air gap discharge at the joint of the first conductor and the temperature measuring plug in the sleeve; and the effect of outer shielding layer is through its protruding structure ground connection for insulating layer outside forms the ground plane, thereby makes high-voltage electric field whole distribution inside the insulating layer, and then ensures that temperature measuring device's product property can not receive external disturbance.
Preferably, the inner shield layer and the outer shield layer are both made of semiconductive materials, and the insulating layer is made of insulating materials.
Preferably, the protective cap is of a U-shaped structure and is made of a semi-conductive material; and an installation station is arranged on one side of the shell close to the protective cap. The mounting station is used for fixing the temperature measuring plug and the sleeve so that the second conductor in the temperature measuring plug can be reliably contacted with the first conductor in the sleeve.
Preferably, the intelligent temperature measuring module comprises a temperature measuring unit, an excitation unit, a control unit and a wireless transmitting unit; the temperature measuring unit comprises a temperature sensor, and the exciting unit is electrically connected with the wireless transmitting unit and the control unit so as to supply power to the wireless transmitting unit and the control unit; the temperature sensor is electrically connected with the control unit; the temperature sensor is configured to collect a temperature signal of the second conductor, and the control unit is configured to convert the collected temperature signal into an electrical signal and output the electrical signal to the wireless transmission unit; the wireless transmitting unit is configured to transmit the converted electric signal to an external receiving device and receive the temperature signal through a receiver of the external device of the temperature measuring device; the excitation unit specifically adopts an electromagnetic induction principle, collects electric energy and supplies the energy to the temperature measuring unit and the wireless transmitting unit during the working of circuits. The intelligent temperature measurement module is realized in two ways, namely, the existing product is adopted; and secondly, the existing temperature sensor, the electromagnetic induction power supply and the wireless transmission chip are integrated on the integrated board according to the existing circuit design so as to be installed on the second conductor, and then the temperature value measured on the second conductor is transmitted to a receiving device outside the measuring device, so that the temperature of the main bus is led out to the outside of the box body, and the temperature of the main bus is accurately monitored on line by measuring the temperature of the second conductor outside the box body.
As described above, the present invention has at least the following advantages over the prior art:
1. the utility model discloses broken through original pre-buried sensor or temperature measuring device's technical thinking on the main bus of airtight cubical switchboard of metal box, but drawn the main bus temperature to the box outside and solve equipment self insulating properties problem, guaranteed the insulating and the sealing action of equipment simultaneously to realized convenient monitoring airtight cubical switchboard internal main bus temperature, can effectively ensure airtight switchgear safe operation of metal, improved its safe and reliable nature of using, fine application prospect has.
2. The utility model discloses temperature measuring device draws main bus temperature through first conductor, and the ingenious design of its sleeve pipe protective layer boss can effectively guarantee to install temperature measuring device in the trompil department of airtight switch box of metal steadily to guarantee its leakproofness, thereby guarantee that the interior original electric field structure of airtight switch box of metal does not receive destruction, from this the utility model discloses realized its main bus temperature accurate monitoring on line when not reducing original airtight switching performance of metal.
3. The utility model discloses the shielding circle design of encircleing first conductor in the protective layer, the closed angle that can effectively shield the fixed frock of outside of protective layer, anchor clamps discharges, and this shielding circle combines the position design of the first step face of above-mentioned boss and second step face, can effectively guarantee that the closed switch box of metal trompil department's closed angle discharges to the insulating nature of the closed switch of metal when further ensureing main bus temperature signal draws forth, this design benefit is reasonable.
4. The utility model discloses insulating boot and helmet play the insulation protection of high-voltage electricity in whole measurement process, its insulating boot design has the hollow structure of toper inner chamber for being both ends, embolia the toper inner chamber and reliably be connected rather than realizing sleeve pipe and temperature measurement end cap, and through the combination design of design step face in order to correspond insulating boot both ends fitting surface on sleeve pipe and temperature measurement end cap cover, it is stable with insulating boot location installation to make sleeve pipe and temperature measurement end cap and insulating boot location installation, accurate from this has the location, the convenient effect of installation, it is more critical that the insulation that can effectively guarantee sleeve pipe and temperature measurement end cap be connected with be connected seal stability.
5. The utility model discloses intelligence temperature measurement module sets up in the temperature measurement end cap, and the temperature measurement end cap is located the tip that the sleeve pipe extends the trompil of airtight switch box of metal, in the temperature measurement process from this, if temperature measurement end cap or intelligent temperature measurement module break down, only need open the helmet and detect temperature measurement end cap or intelligent temperature measurement module and can accomplish, and needn't open the metal-sealed switchgear box, original electric field structure in can the effective protection box does not receive destruction, the effective reduction of doing maintains the replacement cost, and change process safety, simple swift.
On the other hand, the design specifications of the existing metal closed switch equipment generally stipulate that the service life of the existing metal closed switch equipment is 20-30 years, but the service life of the existing temperature measurement electronic element is generally 10-12 years, so that when the existing temperature measurement electronic element is directly arranged on a main bus for temperature measurement, the electronic element cannot achieve a wireless and passive temperature test effect due to the blocking limitation of a metal box body, and is difficult to replace once the service life of the electronic element is reached. The temperature measuring device is convenient to install, temperature measurement can be carried out again only by replacing the temperature measuring plug outside the metal closed switch equipment after the original temperature measuring electronic device reaches the service life, the replacement time of the temperature measuring device is controlled to be completed within half an hour in practice, and the replacement is quick, convenient and low in cost.
Drawings
The invention will be described by way of example only and with reference to the accompanying drawings, in which
FIG. 1 is a sectional view of the main bus temperature measuring device of the metal-enclosed switch of the embodiment of the present invention;
FIG. 2 is a schematic view of the installation of the main bus temperature measuring device of the metal enclosed switch of the embodiment of the present invention;
fig. 3 is a schematic structural diagram of a sleeve in an embodiment of the present invention;
fig. 4 is a schematic structural view of an insulating boot according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a temperature measuring plug according to an embodiment of the present invention;
fig. 6 is a schematic structural view of a protective cap according to an embodiment of the present invention.
Description of reference numerals: 1-a sleeve; 11-a first conductor; 12-a protective layer; 121-a first step face; 122-a second step surface; 123-an annular groove; 124-a third step surface; 13-a shielding ring; 14-a ground hole; 2-an insulating boot; 21-an insulating layer; 211-a second mating face; 212 — a first mating face; 22-an inner shield layer; 23-an outer shield layer; 24-raised structures; 3-measuring the temperature of the plug; 31-a second conductor; 32-shell, 321-fourth step face; 322-an installation station; 33-protrusions; 4-protecting the cap; 5-metal closed switch box body; 6-main bus; 7-pressing a plate; 8-welding the stud.
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.
Example one
The embodiment is substantially as shown in fig. 1 to 6: the embodiment provides a temperature measuring device for a main bus of a metal enclosed switch, which comprises a sleeve 1, an insulating boot 2, a temperature measuring plug 3 and a protective cap 4, wherein the temperature measuring device is arranged at an opening of a metal enclosed switch box body 5 through the sleeve 1 and ensures sealing connection; specifically, a first conductor 11 penetrating through two ends of the sleeve 1 is arranged in the sleeve 1, a protective layer 12 is formed on the periphery of the sleeve 1 penetrating along the first conductor, the protective layer 12 is designed to prevent the first conductor 11 from being damaged by machinery or heat, the lower end of the first conductor 11 is fixedly connected with a main bus 6 in the metal closed switch, the upper end of the first conductor penetrates through the sleeve 1 and is fixedly connected with a temperature measuring plug 3, and therefore two end faces of the first conductor 11 protrude out of two end faces of the protective layer 12 and extend to the outside of the first conductor.
The insulating boot 2 provided by the embodiment is used for installing the sleeve 1 and the temperature measuring plug 3; the insulating boot 2 is designed in a hollow structure, a sleeve 1 and a temperature measuring plug 3 which extend out of one end of an opening of a metal closed switch box body 5 are sleeved in the insulating boot 2, and the insulating boot 2 is connected with the external ground so that the insulating boot 2 forms a ground layer; the temperature measuring plug 3 positioned at the upper end of the sleeve 1 comprises a second conductor 31 and a shell 32, the upper end of the second conductor 31 is coated inside the shell 32, the lower end of the second conductor is provided with a protrusion 33 which extends downwards out of the shell 32, the second conductor 31 is connected with the first conductor 11 through the protrusion 33 at the lower end of the second conductor, the upper end of the shell 32 is provided with an installation station 322, and the installation station 322 is designed and used when the temperature measuring plug 3 is fixed with the sleeve 1, so that the second conductor 31 in the temperature measuring plug 3 can be reliably contacted with the first conductor 11 in the sleeve 1.
An intelligent temperature measuring module for measuring the temperature of the second conductor 31 is embedded in the temperature measuring plug 3 and is externally connected through a wireless signal; specifically, the intelligent temperature measurement module provided according to the embodiment includes a temperature measurement unit, an excitation unit, a control unit and a wireless transmission unit; the temperature measuring unit comprises a temperature sensor, and the excitation unit is electrically connected with the wireless transmitting unit and the control unit so as to supply power to the wireless transmitting unit and the control unit; the temperature sensor is electrically connected with the control unit; the temperature sensor is configured to collect a temperature signal of the second conductor 31, and the control unit is configured to convert the collected temperature signal into an electrical signal and output the electrical signal to the wireless transmission unit; the wireless transmitting unit is configured to transmit the converted electric signal to external receiving equipment and receive the temperature signal through a receiver of the external equipment of the temperature measuring device; the excitation unit specifically adopts an electromagnetic induction principle, collects electric energy and supplies the energy to the temperature measuring unit and the wireless transmitting unit during the working of circuits.
From above, the temperature measurement theory of operation of this embodiment is: the temperature of the main bus 6 in the metal closed switch is led out by the first conductor 11 in the sleeve 1 and is transmitted to the second conductor 31 in the temperature measuring plug 3, and then the temperature of the main bus 6 in the metal closed switch equipment is indirectly measured by measuring the temperature on the second conductor 31 by the intelligent temperature measuring module arranged in the temperature measuring plug 3. The intelligent temperature measurement module is realized in two ways, namely, the existing product is adopted; secondly, the existing temperature sensor, the electromagnetic induction power supply and the wireless transmission chip are integrated on the integrated board according to the existing circuit design so as to be installed on the second conductor 31, and then the temperature value measured on the second conductor 31 is transmitted to a receiving device outside the measuring device, so that the temperature of the main bus 6 is led out to the outside of the box body, and the temperature of the main bus 6 is accurately monitored on line by measuring the temperature of the second conductor 31 outside the box body.
The structure of the bushing is specifically shown in fig. 3, an annular shielding ring 13 surrounding the first conductor 11 is arranged in the middle of the protective layer 12 provided in this embodiment, and a grounding hole 14 penetrating through the protective layer 12 outwards is formed in the right side of the shielding ring 13, so that the shielding ring 13 is connected with the external ground to ensure that the shielding ring 13 is always at the ground potential, and the design purpose of the shielding ring 13 in this embodiment is to shield sharp-angled discharge of an external fixing tool and a fixture of the protective layer 12, so as to further ensure the insulation property of the metal-enclosed switch when the temperature signal of the main bus 6 is led out.
In order to stably fix the bushing 1 to the opening of the metal enclosed switch box 5, please refer to fig. 2 and 3, a boss is disposed on an outer side wall of one end of the bushing 1 close to the main bus 6, and a first step surface 121 and a second step surface 122 are formed, and the bushing 1 is fixed to the opening of the metal enclosed switch box 5 through the boss; specifically, a sleeve 1 sleeved with a first conductor 11 extends into an opening of a metal closed switch box body 5 so that the lower end part of the first conductor 11 is fixedly connected with a main bus 6, the size of the cross section of a boss on the sleeve 1 is larger than that of the opening of the box body so that the boss is fixed on the outer side of the opening of the box body, and the boss is locked by a pressing plate 7 and a welding stud 8 on the metal closed switch box body so that the sleeve 1 is stably fixed at the opening of the box body; meanwhile, an annular groove 123 for mounting a sealing ring is formed in the second step surface 122, so that the inside and the outside of the opening of the metal sealing switch are sealed, and the sealing performance of the metal sealing switch is guaranteed.
Of course, the above-mentioned design of the boss structure and the technical solution of fixing the bushing 1 at the opening of the metal-enclosed switch by the boss structure are only preferred solutions of the present embodiment, and are not particularly limited thereto, and on this basis, the specific structural shape of the bushing 1 can be specifically adjusted, so that the bushing 1 is stably installed at the opening of the metal-enclosed switch box 5, and the sealing performance of the bushing is ensured, and further the insulation performance of the device itself when the temperature of the main bus 6 is led out by using the first conductor 11 is ensured. The design of boss in this embodiment has following beneficial effect: on one hand, the sleeve 1 is convenient to fix at the opening of the metal sealing switch box body, and on the other hand, a sealing ring is convenient to install to realize the sealing of the inside and the outside of the metal sealing switch at the opening; the installation operation is effectively realized, and the sealing effect of the equipment is also realized.
According to the preferred scheme of this embodiment, along the axial direction of sleeve 1, shielding ring 13 extends to its both sides by between first step face 121 and the second step face 122, and the upper end of shielding ring 13 has upwards surpassed the horizontal plane that first step face 121 was located, and the lower extreme of shielding ring 13 has downwards surpassed the horizontal plane that second step face 122 was located, combines above-mentioned technical scheme from this, and the design of shielding ring 13 can be especially directed against the closed switch box 5 closed hole department of metal closed discharge problem of pointed angle, has fine shielding effect to further ensure the insulating nature of equipment.
In this embodiment, the insulating boot 2 and the protective cap 4 play a role of insulation protection of high voltage electricity in the whole measurement process, as shown in fig. 6, wherein the protective cap 4 is a U-shaped structure and made of a semiconductive material, and the protective cap 4 covers an end surface of the insulating boot 2 on the side where the temperature measuring plug 3 is installed, so that the temperature measuring plug 3 completely covers the inside of the ground layer.
Example two
The second embodiment is substantially the same as the first embodiment, except that: referring to fig. 1, 4 and 5, in this embodiment, a temperature measuring device for a main bus 6 of a metal-enclosed switch is provided, in order to facilitate the sleeve 1 and the temperature measuring plug 3 to be installed in the insulating boot 2, the insulating boot 2 provided in this embodiment has a hollow structure with tapered inner cavities at two ends, so that the sleeve 1 and the temperature measuring plug 3 are respectively inserted into the tapered inner cavities at two ends of the insulating boot 2 and are adapted thereto. Furthermore, a step extending along the boss direction is further provided on the outer sidewall of the sleeve 1, a third step surface 124 is formed, and a first mating surface 212 adapted to the third step surface 124 is provided corresponding to the end of the insulating boot 2 connected to the sleeve 1; meanwhile, a protruding part extending outwards is arranged on the temperature measuring plug 3, a fourth step surface 321 is formed, and a second matching surface 211 matched with the fourth step surface is arranged at the end part, connected with the temperature measuring plug 3, of the insulating boot 2, so that the sleeve 1, the temperature measuring plug 3 and the insulating boot 2 are positioned and installed by matching the third step surface 124 on the sleeve 1 and the fourth step surface on the temperature measuring plug 3 with the matching surfaces at two ends of the insulating boot 2 correspondingly. The design of the positioning and mounting structure between the insulating boot 2 and the sleeve 1 and the temperature measuring plug 3 in the embodiment is simple, the sleeve 1 and the temperature measuring plug 3 can be conveniently positioned and mounted with the insulating boot 2, and the insulation and the sealing performance of the connection between the sleeve 1 and the temperature measuring plug 3 can be guaranteed through the design of the conical inner cavity, the step surface and the matching surface.
According to a preferred solution of the present embodiment, the insulating boot 2 of the present embodiment adopts the following design structure: the insulating boot 2 is provided with an inner shielding layer 22, an insulating layer 21 and an outer shielding layer 23 from inside to outside, wherein the insulating layer 21 is made of the existing insulating material, and the inner shielding layer 22 and the outer shielding layer 23 are made of semiconductive materials; the inner shielding layer 22 is positioned at the joint of the temperature measuring plug 3 and the conductor, and the inner shielding layer 22 is designed to effectively shield air gap discharge at the joint of the first conductor 11 and the temperature measuring plug 3 in the sleeve 1; outer shielding layer 23 cladding is connected with the ground connection in insulating layer 21 outside and protruding structure 24 through outside setting, and outer shielding layer 23's effect is connected through its protruding structure 24 ground connection for insulating layer 21 outside forms the ground plane, thereby makes high-tension electric field total distribution inside insulating layer 21, and then ensures that temperature measuring device's product property ability does not receive external disturbance, and this structural design is ingenious reasonable, and its low in manufacturing cost has fine practicality.
On the other hand, fig. 2 of the embodiment shows a schematic structural diagram of the temperature measuring device according to the exemplary embodiment of the present invention after being connected to the main bus of the metal-enclosed switch, and according to the embodiment, the specific installation method thereof includes the following steps:
before welding the metal closed switch, a hole is formed in a metal box body 5 of the switch on which a temperature measuring device is pre-installed, and a welding stud is welded; before the main bus is installed on the metal closed switch, a hole is formed at the position where the temperature measuring device is pre-installed on the main bus 6;
after a sealing ring is arranged on the sleeve 1, the sleeve is inserted into the metal closed switch from an opening on the metal box body, and the sleeve and the main bus are fixed by using a screw, so that a first conductor 11 arranged in the sleeve is reliably contacted with the main bus 6; then, the sleeve and the welding stud are pressed tightly by using a pressing plate 7, and the pressing plate is screwed to the welding stud 8 by using a nut, so that the sleeve 1 is fixed at the opening of the metal closed switch and the inside and the outside of the opening of the metal closed switch are sealed by a sealing ring;
according to the embodiment of the present invention, the insulating boot 2 is sleeved into the end of the sleeve 1, so that the third step 124 surface on the side wall of the sleeve 1 is connected with the first fitting surface 212 on the end of the insulating boot in a matching manner; installing the temperature measuring plug 3 in the other end of the insulating boot 2, so that a fourth step surface 321 at the end part of the temperature measuring plug 3 is matched and connected with a second matching surface 211 at the end part of the insulating boot, and screwing the temperature measuring plug 3 through an installation station 322, so that a second conductor 31 arranged in the temperature measuring plug 3 is reliably contacted with a first conductor 11 in the sleeve;
finally, covering the end face of the insulating boot 2 on the side where the temperature measuring plug 3 is installed with a protective cap 4, so that the temperature measuring plug 3 is completely covered in the grounding layer; and connecting the insulating boot 2 with the external ground to complete the installation of the temperature measuring device.
Therefore the embodiment of the utility model provides a temperature measuring device not only can realize intelligent wireless, passive measurement metal airtight switch main bus temperature, and the simple operation installation, in the former device of temperature measurement electron after reacing the life-span, only need just can carry out temperature measurement again at the outside temperature measurement end cap of changing of metal airtight switchgear, tests its change time control in the practice and accomplishes in half an hour, changes swiftly, convenient and with low costs.
To sum up, the utility model discloses temperature measuring device is difficult to the technical problem who realizes to current airtight switch main bus temperature measurement of metal, and it adopts ingenious structural design to draw main bus temperature to the box outside, through measuring the temperature of the interior main bus of second conductor temperature real-time supervision airtight switch box of temperature measurement end cap in to turn into the temperature signal with the wireless transmitting unit of self after the signal of telecommunication with signal transmission to outside receiving arrangement, with the online accurate monitoring of main bus in the realization airtight switch box of metal. Just the utility model discloses metal airtight switch self electrical insulation problem when can effectively solving main bus temperature signal and drawing forth has insulating and sealed effect, can effectively guarantee that original electric field structure does not receive destruction in the metal airtight switch box, does not influence the electrical property of original product, through one of the running state foundation of real time monitoring main bus temperature as judging metal airtight switch to guarantee metal airtight switchgear safe operation. Simultaneously the utility model discloses temperature measuring device has that structural connection is reliable and stable, installation simple operation, maintenance cost are low characteristics, have fine application prospect and popularization potentiality in the practice.
The above description is only for the preferred embodiment of the present invention, and the present invention is not limited thereto, the protection scope of the present invention is defined by the claims, and all structural changes equivalent to the contents of the description and drawings of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a metal enclosed switch main bus temperature measuring device which characterized in that: the temperature measuring device comprises a sleeve, an insulating boot, a temperature measuring plug and a protective cap, and is arranged at the opening of the metal closed switch box body through the sleeve;
a first conductor penetrating through two ends of the sleeve is arranged in the sleeve, a protective layer is formed on the periphery of the sleeve penetrating along the first conductor, one end of the first conductor is fixedly connected with a main bus in the metal closed switch, and the other end of the first conductor penetrates through the sleeve and is fixedly connected with the temperature measuring plug; the insulating boot is arranged in a hollow mode, a sleeve and a temperature measuring plug, which extend out of one end of the opening of the metal closed switch box body, are sleeved in the insulating boot, and the insulating boot is connected with the external ground to form a ground layer; the temperature measuring plug comprises a second conductor and a shell, one end of the second conductor is coated in the shell, and the other end of the second conductor extends out of the shell to be connected with the first conductor; an intelligent temperature measuring module for measuring the temperature of the second conductor is embedded in the temperature measuring plug and is externally connected through a wireless signal; the protective cap covers the end face of one side of the insulating boot, where the temperature measuring plug is installed, so that the temperature measuring plug is completely covered inside the grounding layer.
2. The main bus temperature measuring device of the metal enclosed switch of claim 1, wherein: the middle part of the protective layer is provided with an annular shielding ring surrounding the first conductor, and the shielding ring is provided with a grounding hole which outwards penetrates through the protective layer so as to be connected with the external ground.
3. The main bus temperature measuring device of the metal enclosed switch of claim 2, wherein: the outer side wall of the sleeve close to one end of the main bus is provided with a boss, a first step surface and a second step surface are formed, and the sleeve is fixed at the opening of the metal closed switch box body through the boss; and an annular groove for installing a sealing ring is arranged on the second step surface, so that the inside and the outside of the opening of the metal sealing switch are sealed.
4. The main bus temperature measuring device of the metal enclosed switch of claim 3, wherein: along the axial direction of the sleeve, two ends of the shielding ring respectively extend to two sides from the position between the first step surface and the second step surface and exceed the horizontal planes where the first step surface and the second step surface are located.
5. The main bus temperature measuring device of the metal enclosed switch of claim 3, wherein: the outer side wall of the sleeve is also provided with a step extending along the direction of the boss, a third step surface is formed, and the end part of the insulating boot connected with the sleeve is provided with a matching surface matched with the third step surface; the temperature measuring plug is provided with a convex part extending outwards, a fourth step surface is formed on the temperature measuring plug, and a matching surface matched with the fourth step surface is arranged at the end part of the insulating boot connected with the temperature measuring plug.
6. The main bus temperature measuring device of the metal enclosed switch of claim 5, wherein: the insulating boot is of a hollow structure with conical inner cavities at two ends, so that the sleeve and the temperature measuring plug are respectively inserted into the conical inner cavities at two ends of the insulating boot, and are respectively matched with matching surfaces at two ends of the insulating boot through the third step surface and the fourth step surface, so that the sleeve, the temperature measuring plug and the insulating boot are positioned and installed.
7. The main bus temperature measuring device of the metal enclosed switch of claim 6, wherein: the insulating boot is provided with an inner shielding layer, an insulating layer and an outer shielding layer from inside to outside, the inner shielding layer is located at the joint of the temperature measuring plug and the conductor, and the outer shielding layer covers the outside of the insulating layer and is connected with the ground through an outwards arranged protruding structure.
8. The main bus temperature measuring device of the metal enclosed switch of claim 7, wherein: the inner shielding layer and the outer shielding layer are both made of semiconductive materials, and the insulating layer is made of insulating materials.
9. The main bus temperature measuring device of the metal enclosed switch of claim 1, wherein: the protective cap is of a U-shaped structure and is made of a semi-conductive material; and an installation station is arranged on one side of the shell close to the protective cap.
10. The main bus temperature measuring device of the metal enclosed switch according to any one of claims 1 to 9, wherein: the intelligent temperature measurement module comprises a temperature measurement unit, an excitation unit, a control unit and a wireless transmission unit; the temperature measuring unit comprises a temperature sensor, and the exciting unit is electrically connected with the wireless transmitting unit and the control unit so as to supply power to the wireless transmitting unit and the control unit; the temperature sensor is electrically connected with the control unit; the temperature sensor is configured to collect a temperature signal of the second conductor, and the control unit is configured to convert the collected temperature signal into an electrical signal and output the electrical signal to the wireless transmission unit; the wireless transmitting unit is configured to transmit the converted electrical signal to an external receiving device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020243804.5U CN211205552U (en) | 2020-03-03 | 2020-03-03 | Metal enclosed switch main bus temperature measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020243804.5U CN211205552U (en) | 2020-03-03 | 2020-03-03 | Metal enclosed switch main bus temperature measuring device |
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| Publication Number | Publication Date |
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| CN211205552U true CN211205552U (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN202020243804.5U Withdrawn - After Issue CN211205552U (en) | 2020-03-03 | 2020-03-03 | Metal enclosed switch main bus temperature measuring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157130A (en) * | 2020-03-03 | 2020-05-15 | 成都盛帮双核科技有限公司 | Metal enclosed switch main bus temperature measuring device |
-
2020
- 2020-03-03 CN CN202020243804.5U patent/CN211205552U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111157130A (en) * | 2020-03-03 | 2020-05-15 | 成都盛帮双核科技有限公司 | Metal enclosed switch main bus temperature measuring device |
| CN111157130B (en) * | 2020-03-03 | 2024-06-14 | 成都盛帮双核科技有限公司 | Main bus temperature measuring device of metal closed switch |
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