Temperature monitoring equipment

Abstract

The utility model discloses a temperature monitoring device, which comprises a shell body, an iron core, a circuit board and a binding ring, the shell body comprises an upper shell and a lower shell, the iron core and the circuit board are both placed in the shell body enclosed by the upper shell and the lower shell, an electromagnetic induction coil group is wound on the iron core, the iron core is provided with a first through hole penetrating through the iron core, and the binding ring is arranged in the first through hole. A second through hole is formed in the upper shell, the first through hole and the second through hole are located in the same plane, and the binding ring penetrates through the first through hole and the second through hole; the circuit board is connected with a temperature measuring probe, the temperature measuring probe is attached to the bottom end of the lower shell, and the outer side wall of the lower shell is used for being attached to a cable to be monitored. According to the utility model, the binding ring is arranged to fix the shell body on the cable to be monitored, the lower shell is matched to be tightly attached to the surface of the cable to be monitored, and the temperature measurement probe is tightly attached to the lower shell, so that the temperature measurement probe arranged in the shell body is utilized to monitor the temperature state of the cable of the power transmission and distribution facility, and the inspection efficiency is effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to power transmission and distribution facility technical field especially is related to a temperature monitoring equipment. BACKGROUND

[0002] Power transmission and distribution facilities are widely distributed and large in number in China. In power transmission and distribution facilities, the temperature of the cable conductor will increase with the increase of the current carried by the cable. Therefore, in such power transmission and distribution facilities, the "health" status of the power transmission and distribution facilities can be evaluated by monitoring the temperature of the cable conductor.

[0003] However, at present, most areas still rely on manual fault inspection, which not only has high labor intensity and high operating cost, but also has low efficiency, poor real-time feedback of fault information, many blind areas of monitoring, strong subjectivity and easy to cause misjudgment.

[0004] Therefore, it is urgent to provide a temperature monitoring equipment to solve the problems. UTILITY MODEL CONTENT

[0005] Therefore, the utility model aims at providing a temperature monitoring equipment to monitor the temperature state of the cable of the power transmission and distribution facility and effectively improve the inspection efficiency.

[0006] To solve the above technical problems, the utility model adopts the technical scheme of a temperature monitoring equipment, which comprises a shell body, an iron core, a circuit board and a restraint ring.

[0007] A temperature measuring probe is connected to the circuit board, the temperature measuring probe is arranged at the bottom end of the lower shell, and the outer side wall of the lower shell is used to arrange the cable to be monitored.

[0008] Further, a temperature measuring circuit module is arranged on the circuit board, and the temperature measuring probe is electrically connected to the temperature measuring circuit module.

[0009] Further, the temperature measuring probe has an L-shaped structure, the bottom end of the lower shell is provided with a receiving groove, and the front end of the temperature measuring probe is arranged in the receiving groove.

[0010] Further, the lower shell is made of heat-conducting and insulating material.

[0011] Further, two clamping pieces are arranged on both sides of the upper end of the inner side of the upper shell, and the first through hole is arranged between the two clamping pieces, and the two clamping pieces on both sides of the upper end of the inner side of the upper shell are respectively arranged to limit the two ends of the iron core.

[0012] Further, a charging circuit module and an energy storage module are arranged on the circuit board, the energy storage module is a charging battery structure, the electromagnetic induction coil group comprises an induction energy taking winding, the induction energy taking winding is arranged on the iron core, the induction energy taking winding is electrically connected with the charging circuit module and the energy storage module through the charging circuit module, and the restraint ring is made of soft magnetic alloy material.

[0013] Further, a main control circuit module is further arranged on the circuit board, the main control circuit module is electrically connected with the energy storage module, and the main control circuit module is used for detecting the voltage state of the energy storage module; the electromagnetic induction coil group further comprises a current detection winding, the current detection winding is arranged on the iron core, and the current detection winding is electrically connected with the main control circuit module of the circuit board, and the main control circuit module is used for detecting the current state flowing through the current detection winding.

[0014] Further, a power management circuit module is further arranged on the circuit board, and the power management circuit module is electrically connected with the main control circuit module.

[0015] Further, a wireless communication circuit module is further arranged on the circuit board.

[0016] Further, the lower shell is made of heat-conducting insulating material.

[0017] As described above, the temperature monitoring equipment of the utility model fixes the shell body on the cable to be monitored through the restraint ring, and the lower shell is tightly attached to the surface of the cable to be monitored, and the temperature measuring probe is arranged close to the lower shell, so that the temperature state of the cable of the power transmission and distribution facility is monitored by using the temperature measuring probe arranged in the shell body, the difficulty of manual inspection is reduced, and the inspection efficiency is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a structural schematic view of the temperature monitoring equipment of the utility model;

[0019] Figure 2 It is an exploded view of the temperature monitoring equipment of the utility model;

[0020] Figure 3 It is a structural schematic view of the upper shell of the utility model;

[0021] Figure 4 It is a structural schematic view of the lower shell of the utility model;

[0022] Figure 5 The utility model relates to a circuit principle diagram of temperature monitoring equipment. DETAILED DESCRIPTION

[0023] The technical scheme of the utility model will be described clearly and completely below in combination with the drawings. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all the other embodiments obtained by the ordinary skilled in the art without creative labor belong to the protection scope of the utility model.

[0024] In the description of the utility model, it needs to be explained that the orientation or position relation indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like is the orientation or position relation based on the shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and is not to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0025] In the description of the utility model, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be understood broadly, for example, can be fixed connection, can also be detachable connection, or integrally connected, can be mechanical connection, can also be electrical connection, can be directly connected, can also be indirectly connected through intermediate medium, can be the communication inside two elements. For the ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0026] Please refer to Figures 1 to 5The utility model relates to a temperature monitoring equipment, apply on power transmission and distribution facilities, including shell body 10, iron core 20, circuit board 30 and restraint ring 40, iron core 20 and circuit board 30 are placed in shell body 10, specifically, shell body 10 includes upper shell 11 and lower shell 12, and iron core 20 and circuit board 30 are placed in the shell body 10 that is surrounded by upper shell 11 and lower shell 12, wireless communication circuit module 301 is provided on circuit board 30, and the electromagnetic induction coil group 50 is wound on iron core 20, the first perforation 21 that penetrates iron core 20 is set up on iron core 20, the second perforation 111 is set up on upper shell 11, the first perforation 21 and the second perforation 111 are set up on the same plane, and restraint ring 40 passes through the first perforation 21 and the second perforation 111 and is set up, so that iron core 20 can be stably fixed in upper shell 11, in the embodiment, the electromagnetic induction coil group 50 structure of iron core 20 outside can be set up with circuit board 30, and circuit board 30 can be clamped and fixed on the two side walls in upper shell 11 according to the requirement, wireless communication circuit module 301 adopts CAT.1 or NB-IoT internet of things communication technology, and the monitoring data of temperature monitoring equipment is directly sent to operation management terminal through cellular internet of things (Cellular IoT), compared with the equipment technical scheme that relies on wireless local area network, saves communication network building engineering, greatly improves the construction speed of project, significantly reduces operation cost, and the system reliability of cellular internet of things is much higher than that of user-built wireless local area network.

[0027] The temperature measuring probe 60 is connected to the circuit board 30, and the temperature measuring probe 60 is arranged on the bottom end of the lower shell 12. The outer side wall of the lower shell 12 is used for abutting the cable to be monitored. The restraint ring 40 is used for fixedly connecting the shell body 10 and the cable to be monitored, so that the real-time temperature state of the cable to be monitored is conveniently transferred to the temperature measuring probe 60 through the lower shell 12, and then the temperature measuring probe 60 conveniently measures the real-time temperature of the cable to be monitored. Finally, the real-time temperature of the cable to be monitored is sent to the terminal through the wireless communication circuit module 301 on the circuit board 30. The real-time temperature state of the cable to be monitored on the terminal can be directly viewed by the inspection personnel, and the inspection efficiency is effectively improved. In the embodiment, the operation management terminal can be a tablet computer, a computer, a mobile phone, or a server.

[0028] Specifically, the temperature measuring circuit module 302 is further arranged on the circuit board 30, and the temperature measuring probe 60 is electrically connected with the temperature measuring circuit module 302, so as to realize the temperature detection effect of the cable to be monitored. The temperature measuring circuit module 302 can also be arranged in the temperature measuring probe 60 according to the requirement, so as to reduce the number of various circuit modules on the circuit board 30, and then facilitate the layout of various circuit modules on the circuit board 30.

[0029] In one embodiment, the temperature probe 60 has an L-shaped structure, and a receiving groove 121 is provided at the bottom end of the lower housing 12. The front end of the temperature probe 60 is placed in the receiving groove 121, so that the temperature probe 60 is placed closer to the cable to be monitored, so as to collect the real-time temperature of the cable to be monitored more quickly.

[0030] In one embodiment, two clips 112 are respectively provided on both sides of the upper end of the inner side of the upper housing 11, and the first through hole 21 is placed between the two clips 112. The two clips 112 on both sides of the upper end of the inner side of the upper housing 11 limit and fix the two ends of the iron core 20, thereby ensuring the stability of the iron core 20 fixed in the housing body 10.

[0031] In one embodiment, the circuit board 30 is further provided with a charging circuit module 303 and an energy storage module 304. The energy storage module 304 is a rechargeable battery structure. The electromagnetic induction coil group 50 includes an induction energy harvesting winding 501, which is wound on the iron core 20. The induction energy harvesting winding 501 is electrically connected to the energy storage module 304 through the charging circuit module 303. The binding ring 40 is made of soft magnetic alloy material. As the AC current on the cable to be monitored passes through, an induced current is generated on the induction energy harvesting winding 501 with the cooperation of the binding ring 40. The induced current is rectified, filtered and regulated by the charging circuit module 303 to charge the energy storage module 304, thereby ensuring that the temperature detection device of this utility model can achieve long-term cable temperature monitoring without the need for a separate external power supply.

[0032] In one embodiment, the circuit board 30 is further provided with a main control circuit module 305, which is electrically connected to the energy storage module 304 and is used to detect the voltage state of the energy storage module 304. The electromagnetic induction coil group 50 also includes a current detection winding 502, which is wound on the iron core 20 and electrically connected to the main control circuit module 305 of the circuit board 30. The main control circuit module 305 is used to detect the current state flowing through the current detection winding 502, thereby achieving the effect of real-time monitoring of the current state flowing through the cable to be monitored. As the alternating current passes through the cable to be monitored, an induced current can be generated on the current detection winding 502 with the cooperation of the binding ring 40, thereby achieving the purpose of the main control circuit module 305 to detect the current state flowing through the current detection winding 502, and thus achieving the effect of real-time monitoring of the current state flowing through the cable to be monitored.

[0033] In one embodiment, the main control circuit module 305 is electrically connected to the temperature measurement circuit module 302, and is used to collect the temperature of the cable to be monitored by the temperature measurement probe 60, so as to achieve the real-time temperature status monitoring effect of the cable to be monitored.

[0034] Furthermore, under the condition of real-time monitoring of the temperature status and the current flowing through the cable to be monitored, the main control circuit module 305 can realize the calculation and analysis functions of the temperature rise slope and the current change slope, and thus obtain the temperature rise slope value and the current change slope value. The specific steps are as follows:

[0035] The main control circuit module 305 collects the temperature value of the cable to be monitored through the temperature measurement circuit module 302 at a certain period, and calculates the temperature rise slope using the following formula: Temperature rise slope = (T2-T1) / (t2-t1); where T2 is the temperature sampling value of the cable to be monitored at the current time t2, T1 is the temperature sampling value of the cable to be monitored at the previous time t1, and t2-t1 is the period duration;

[0036] The main control circuit module 305 collects the current value flowing through the cable under monitoring through the current detection winding 502 at a certain period. The current change slope is calculated using the following formula: di / dt=Δi / Δt=(i2-i1) / (t2-t1); where “di / dt” represents the rate of change of current, “Δi” represents the amount of current change between two sampling times, “Δt” represents the amount of time change between two sampling times, and “i2” and “i1” represent the current value corresponding to the current time “t2” and the current value corresponding to the previous time “t1” within a sampling period, respectively.

[0037] Furthermore, given that the main control circuit module 305 acquires the temperature rise slope value and the current change slope value, the main control circuit module 305 can also realize the remote alarm threshold setting function, thereby enabling the setting of multiple alarm functions in different time periods. The specific operation is as follows:

[0038] The operation management terminal sends the alarm threshold instruction packet to the wireless communication circuit module 301 of the circuit board 30 via the cellular IoT network. The wireless communication circuit module 301 forwards the alarm threshold instruction packet to the internal register of the main control circuit module 305. The main control circuit module 305 compares the currently collected temperature value, temperature rise slope, and current change slope with the alarm thresholds for each time period in the alarm threshold instruction packet to determine the fault alarm. Due to the different electricity consumption habits of residents, factories, etc., the electricity load varies at different times, and the alarm thresholds for each time period in the alarm threshold instruction packet will also vary. Therefore, it is necessary to compare the temperature value, temperature rise slope, and current change slope collected in the current time period with the alarm thresholds for the corresponding time period in the alarm threshold instruction packet to achieve accurate fault alarm determination.

[0039] In one embodiment, a power management circuit module 306 is also provided on the circuit board 30. The power management circuit module 306 is electrically connected to the main control circuit module 305. The energy storage module 304 supplies power to each circuit module on the circuit board 30 through the power management circuit to ensure the normal operation of each circuit module on the circuit board 30.

[0040] In one embodiment, the lower housing 12 is constructed of a thermally conductive and insulating material. Furthermore, the lower housing 12 is constructed of a highly thermally conductive elastic silicone insulating material, so that the bottom end of the lower housing 12 can better fit with the surface of the cable to be monitored through its own deformation, thereby facilitating the temperature probe 60 to reliably measure the real-time temperature of the cable to be monitored.

[0041] In practical operation, the housing body 10 is first fixed to the cable to be monitored using the restraining ring 40. Since the lower housing 12 is in close contact with the surface of the cable to be monitored, the temperature probe 60 is also in close contact with the lower housing 12. Thus, the temperature status of the power transmission and distribution facility cable is monitored using the temperature probe 60 installed inside the housing body 10, reducing the difficulty of manual inspection and effectively improving inspection efficiency. In addition, the main control circuit module 305 calculates the temperature rise slope based on the temperature value of the cable to be monitored collected by the temperature circuit module 302. Furthermore, when alternating current flows through the cable to be monitored, the current detection winding 502 collects the current value flowing through the cable to be monitored. The main control circuit module 305 installed on the circuit board 30 can calculate the current change slope based on the current value flowing through the cable to be monitored collected by the current detection winding 502.

[0042] In summary, the temperature monitoring device of this utility model fixes the housing body 10 to the cable to be monitored by setting a restraining ring 40, and the lower housing 12 is closely attached to the surface of the cable to be monitored. The temperature probe 60 is closely attached to the lower housing 12. Thus, the temperature status of the power transmission and distribution facility cable can be monitored by using the temperature probe 60 set inside the housing body 10, reducing the difficulty of manual inspection and thus effectively improving the inspection efficiency.

[0043] The above-described embodiments are merely illustrative of several implementations of this utility model, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the appended claims.

Claims

1. A temperature monitoring device, characterized by: The application relates to a temperature monitoring device for a cable, which comprises a shell body, an iron core, a circuit board and a restraint ring, the shell body comprises an upper shell and a lower shell, the iron core and the circuit board are arranged in the shell body surrounded by the upper shell and the lower shell, an electromagnetic induction coil group is arranged on the iron core, a first through hole penetrating the iron core is arranged on the iron core, a second through hole is arranged on the upper shell, the first through hole and the second through hole are located on the same plane, and the restraint ring is arranged through the first through hole and the second through hole. A temperature measuring probe is connected to the circuit board, the temperature measuring probe is arranged on the bottom end of the lower shell, the outer wall of the lower shell is used for being attached to a cable to be monitored, and the restraint ring is used for fixedly connecting the shell body and the cable to be monitored.

2. The temperature monitoring device of claim 1, wherein: A temperature measuring circuit module is arranged on the circuit board, and the temperature measuring probe is electrically connected with the temperature measuring circuit module.

3. The temperature monitoring device of claim 1, wherein: The temperature measuring probe is in L-shaped structure, a containing groove is arranged on the bottom end of the lower shell, and the front end of the temperature measuring probe is arranged in the containing groove.

4. The temperature monitoring device of claim 1, wherein: The lower shell is made of heat-conducting and insulating material.

5. The temperature monitoring device of claim 1, wherein: Two clamping pieces are arranged on the upper end of the inner side of the upper shell, the first through hole is arranged between the two clamping pieces, and the two clamping pieces on the two sides of the upper end of the inner side of the upper shell are respectively used for limiting the two ends of the iron core.

6. The temperature monitoring device of claim 1, wherein: A charging circuit module and an energy storage module are arranged on the circuit board, the energy storage module is a charging battery structure, the electromagnetic induction coil group comprises an induction energy taking winding, the induction energy taking winding is arranged on the iron core, the induction energy taking winding is electrically connected with the energy storage module through the charging circuit module, and the restraint ring is made of soft magnetic alloy material.

7. A temperature monitoring device according to claim 6, characterised in that: A main control circuit module is further arranged on the circuit board, the main control circuit module is electrically connected with the energy storage module and is used for detecting the voltage state of the energy storage module, the electromagnetic induction coil group further comprises a current detection winding, the current detection winding is arranged on the iron core, the current detection winding is electrically connected with the main control circuit module of the circuit board, and the main control circuit module is used for detecting the current state of the current flowing in the current detection winding.

8. A temperature monitoring device according to claim 7, characterised in that: A power management circuit module is further arranged on the circuit board, and the power management circuit module is electrically connected with the main control circuit module.

9. The temperature monitoring device of claim 1, wherein: A wireless communication circuit module is further arranged on the circuit board.

10. The temperature monitoring device of claim 1, wherein: The lower shell is made of heat-conducting and insulating material.

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