A composite fully enclosed load-type ejection fuse

Abstract

The present invention discloses a composite fully enclosed load-type ejection fuse, which relates to the field of power conversion technology, including a fixing component, a mounting component and a power conversion component, wherein the power conversion component is used to convert the circuit to a fuse with suitable power according to the fault current characteristics and working current of the circuit to be protected. The present invention detects and checks the circuit fault through a circuit fault monitoring system, and connects the protection circuit to a fuse body of a suitable power model according to the detection result, thereby reducing the probability that the fuse cannot work due to an unclear fault. In the actual use process, a fuse of suitable power specification can be selected according to the specific situation of the circuit and the power quality parameters, thereby expanding the applicable scope of the fuse, so that the fuse can be applied to situations with different output powers under the same protection circuit.

Description

Technical Field

[0001] The invention relates to the technical field of power conversion, in particular to a composite fully enclosed load-type ejection fuse. Background Art

[0002] The fuse cuts off the current by melting itself, thereby protecting the safe operation of the circuit. However, the existing fully enclosed load-type ejector fuse mainly improves the equipment's anti-fouling ability and extends the fuse's service life through a fully enclosed design. When in use, it cannot use fuses of different specifications and powers to protect the circuit according to the fault current characteristics of the protected circuit and the actual working current, which has certain defects.

[0003] The defects of existing fuses are:

[0004] 1. In the patent document CN218867027U, the main consideration is how to prevent the fuse carrier from popping out and injuring people, but it does not take into account that the existing fuse cannot use fuses of different specifications and powers to protect the circuit according to the fault current characteristics and actual working current of the protected circuit;

[0005] 2. In the patent document CN207818504U, the main consideration is how to improve the sealing and electrical insulation of the fuse, but it does not take into account that the existing fuse cannot monitor the temperature and shedding of the fuse joint during use;

[0006] 3. In the patent document CN221149930U, the main consideration is how to improve the reuse rate of the fuse, but it does not take into account that the existing fuse cannot reduce the risk of false operation or missed operation when used, and the safety of the protected circuit cannot be guaranteed;

[0007] 4. In the patent document CN206921778U, the main consideration is how to reduce the impact of bad weather on the fuse and improve the working stability of the fuse, but the problem that the existing fuse is less convenient to install and arrange when in use is not taken into consideration. Summary of the invention

[0008] The object of the present invention is to provide a composite fully enclosed load-type ejection fuse to solve the problems raised in the above background technology.

[0009] To achieve the above object, the present invention provides the following technical solutions: a composite fully enclosed load-type ejection fuse, comprising a fixing assembly, a mounting assembly and a power conversion assembly, wherein the back of the fixing assembly is connected to the mounting assembly, the front of the mounting assembly is fixed with a power conversion assembly by bolts, and the power conversion assembly is used to convert the circuit to a fuse with appropriate power according to the fault current characteristics and working current of the circuit to be protected;

[0010] The power conversion assembly includes a storage box fixed on the front of the mounting assembly, and a power quality monitor and a symmetrically arranged data collector are installed on the bottom wall of the storage box. The power quality monitor is located between the two groups of data collectors. The power quality monitor is equipped with a circuit fault monitoring system. The power quality monitor is used to monitor the power quality parameters in the protected circuit and to provide early warning and alarm;

[0011] The data collector is equipped with a lead joint detection system, and the lead joint detection system is used to detect the connection status of the fuse and the power quality monitor and the use status of the fuse.

[0012] Preferably, the lead joint detection system includes a patrol temperature measurement module and a shedding monitoring module, the patrol temperature measurement module includes an infrared sensor installed on the inner walls on both sides of the storage box, the shedding monitoring module includes a shedding monitoring component installed at the bottom of the fixed component, and the fuse body is installed inside the fixed component. The shedding monitoring component is used to detect the shedding of the fuse body.

[0013] Preferably, the circuit fault monitoring system includes a line detection unit, a data receiving unit, a power conversion unit and an alarm unit. The line detection unit uses a segment-by-segment method, an AC and DC method and a power quality parameter analysis method to troubleshoot circuit faults. The data receiving unit uses a central processing unit to receive data collected by the line detection unit when troubleshooting circuit faults and analyzes and processes the data. The power conversion unit determines whether it is necessary to convert the protected circuit to a fuse of another power based on the result of the data analysis and processing. The alarm unit interacts with the central control system of the power grid. When the central processing unit receives abnormal data, the alarm unit sends an alarm message to the central monitoring system of the power grid.

[0014] Preferably, the mounting assembly includes a mounting plate connected to the back of the fixing assembly by bolts, and the front of the mounting plate fits with the back of the storage box, the front of the mounting plate is penetrated by symmetrically arranged mounting grooves, and the mounting grooves are located below the storage box, and a supporting plate is installed at the bottom of the mounting plate.

[0015] Preferably, the fall-off monitoring component includes a storage plate installed at the bottom of the fixing component, and two groups of storage plates are provided, and laser displacement sensors arranged front and back are installed on both side outer walls of the storage plates.

[0016] Preferably, the segment-by-segment method first divides the circuit into segments, and checks and analyzes segment by segment whether there is a circuit fault. If there is a circuit fault, the circuit segment is checked in detail to determine the area where the fault exists in the circuit segment and the type of the circuit fault.

[0017] The AC and DC method applies AC and DC voltages simultaneously to observe the circuit's response under different power modes, thereby determining the location of the fault.

[0018] The power quality parameter analysis method uses a central processor to collect and compare power quality parameters to understand the operation status and potential problems of the circuit system.

[0019] Preferably, the fixing assembly includes a fixing plate attached to the outer surface of the fuse body, and two groups of fixing plates are provided, wherein a limiting hole is provided on the front side of one group of fixing plates, a limiting rod is embedded and installed inside the limiting hole, and the front side of the limiting rod is connected to the back side of the other group of fixing plates, the two groups of fixing plates are connected by screws, and light emitters and light receivers are respectively installed on the surfaces of the two groups of fixing plates close to each other, and the light receivers are electrically connected to the light emitters, the light emitters and the light receivers are used to judge the degree of tightness of the connection between the two groups of fixing plates, and the bottom of the fixing plate is connected to the top of the storage plate.

[0020] Preferably, two groups of fuse bodies are provided, and the two groups of fuse bodies have different powers, and the two groups of fuse bodies are connected in parallel.

[0021] Preferably, the fuse body includes a porcelain bushing, a sealing cover and an inlet wire, the bottom of the porcelain bushing fits with the top of the supporting plate, a sealing cover is embedded in the bottom of the porcelain bushing, and the sealing cover is located on one side of the supporting plate, the distance between the outer surface of the sealing cover and the laser displacement sensor is A, an upper fastener is installed on the top of the porcelain bushing, an inlet wire is arranged inside the upper fastener, and one end of the inlet wire is connected to the output end of the power quality monitor.

[0022] Preferably, the power quality parameters include one or more of voltage, temperature, current, power factor, frequency, harmonics, voltage fluctuation and flicker, voltage sag and short interruption, transient overvoltage, waveform distortion and power supply continuity.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] 1. The present invention detects the current, voltage and temperature parameters of the protected circuit through an electric energy quality monitor, and connects the protection circuit to a fuse body of a suitable power model according to the detection results. It can select a fuse with suitable fuse specifications and fusing characteristics according to the specific conditions and requirements of the circuit, expand the application range of the fuse, and reduce the probability of the fuse failing to work due to an obscure fault.

[0025] 2. The present invention monitors and checks the temperature of the joint between the inlet line and the power quality monitor through the patrol temperature measurement module, and can also arrange a camera in the storage box to monitor the connection between the inlet line and the power quality monitor, so as to determine whether the temperature of the joint is too high or the connection is disconnected. When it is detected that the temperature of the joint is too high, the heat dissipation operation is performed on the joint by arranging a heat dissipation device, thereby reducing the probability of affecting the sensitivity of the fuse due to excessive temperature. When it is detected that the joint is disconnected, an early warning information is sent to the central control system of the power grid to avoid the situation where the overall safety of the protected circuit is affected due to line disconnection.

[0026] 3. The present invention uses a variety of methods to troubleshoot circuit faults, avoiding the situation where the fuse cannot work due to unclear circuit faults. To a certain extent, it can reduce the risk of false operation or missed operation of the fuse and improve the safety and stability of the circuit.

[0027] 4. The present invention can support the fuse body in the fixed assembly by setting a supporting plate, thereby improving the stability of the fuse body during installation and use, and through the arrangement of the mounting plate, the fuse can be firmly fixed at different positions, thereby improving the convenience of installation and arrangement. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 It is a schematic diagram of the plane assembly structure of the storage box of the present invention;

[0030] Figure 3 is a side view of the present invention;

[0031] Figure 4 is a plan view of the fuse body of the present invention;

[0032] Figure 5 It is a schematic diagram of the assembly structure of the fixing component of the present invention;

[0033] Figure 6 It is a schematic diagram of the assembly structure of the installation component of the present invention;

[0034] Figure 7 It is a schematic diagram of the parallel connection of the fuses of the present invention;

[0035] Figure 8 It is a diagram of the lead joint detection system of the present invention;

[0036] Fig. 9 This is a diagram showing the structure of the circuit fault monitoring system of the present invention.

[0037] In the figure: 1. Fixing assembly; 2. Mounting assembly; 3. Power conversion assembly; 4. Fuse body; 5. Shedding monitoring assembly; 6. Storage box; 7. Power quality monitor; 8. Infrared sensor; 9. Data collector; 10. Fixing plate; 11. Limiting hole; 12. Limiting rod; 13. Storage plate; 14. Laser displacement sensor; 15. Mounting plate; 16. Support plate. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0040] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] See also Figures 1 to 5An embodiment of the present invention is as follows: a composite fully enclosed load-type ejection fuse includes a fixing component 1, a mounting component 2 and a power conversion component 3. The back of the fixing component 1 is connected to the mounting component 2. The front of the mounting component 2 is fixed with the power conversion component 3 by bolts, and the power conversion component 3 is used to convert the circuit to a fuse with appropriate power according to the fault current characteristics and working current of the protected circuit. The power conversion component 3 includes a storage box 6 fixed to the front of the mounting component 2. The bottom wall of the storage box 6 is installed with a power quality monitor 7 and a symmetrically arranged data collector 9. The power quality monitor 7 is located between the two groups of data collectors 9. The power quality monitor 7 is equipped with a circuit fault monitoring system. The power quality monitor 7 is used to monitor the power in the protected circuit. Quality parameters, and early warning and alarm, the data collector 9 is equipped with a lead joint detection system, and the lead joint detection system is used to detect the connection status of the fuse and the power quality monitor 7 and the use of the fuse, there are two groups of fuse bodies 4, and the two groups of fuse bodies 4 have different powers, and the two groups of fuse bodies 4 are connected in parallel, the fuse body 4 includes a porcelain bushing, a sealing cover and an inlet line, the bottom of the porcelain bushing is in contact with the top of the supporting plate 16, the bottom of the porcelain bushing is embedded with a sealing cover, and the sealing cover is located on one side of the supporting plate 16, the distance between the outer surface of the sealing cover and the laser displacement sensor 14 is A, the top of the porcelain bushing is installed with an upper fastener, the interior of the upper fastener is provided with an inlet line, and one end of the inlet line is connected to the output end of the power quality monitor 7.

[0042] Furthermore, when using the fuse, firstly, two or more groups of fuse bodies 4 with different power models are assembled together through the fixing component 1, and the multiple groups of fuse bodies 4 are connected in parallel. For some circuits that require precise protection, a fuse with a lower fusing current can be selected, and for some circuits that allow short-term overcurrent, a fuse with a higher fusing current can be selected. Then, the fuse is installed at the desired position through the installation component 2 and connected to the protected circuit. Then, the current, voltage and temperature parameters of the protected circuit can be detected by the power quality monitor 7, and the protection circuit can be connected to the fuse body 4 of the appropriate power model according to the detection results, so as to determine the appropriate fuse according to the current fault characteristics of the protected circuit and the actual working current, so that the fuse has a wide range of application and reduces the probability of the fuse failing to work due to an obscure fault.

[0043] See also Figure 1 , Figure 2 , Figure 3 and Figure 8An embodiment of the present invention is as follows: a composite fully enclosed load-type ejection fuse, a lead connector detection system includes a patrol temperature measurement module and a fall-off monitoring module, the patrol temperature measurement module includes an infrared sensor 8 installed on the inner walls of both sides of a storage box 6, and the fall-off monitoring module includes a fall-off monitoring component 5 installed at the bottom of a fixed component 1, a fuse body 4 is installed inside the fixed component 1, and the fall-off monitoring component 5 is used to detect the fall-off of the fuse body 4.

[0044] Furthermore, in the process of using the composite fully enclosed load-type ejection fuse, the patrol temperature measurement module uses an infrared sensor 8 to monitor and check the temperature of the connection between the inlet line of the fuse body 4 and the power quality monitor 7. A camera can also be arranged in the storage box 6 to monitor the connection between the inlet line and the power quality monitor 7, so as to determine whether the temperature at the connection is too high or has fallen off, and transmit the detection results to the data collector 9, and send an early warning message when an abnormal situation is detected, so as to avoid the situation where the overall safety of the protected circuit is affected by line disconnection.

[0045] See also Figure 7 and Fig. 9 An embodiment of the present invention is as follows: a composite fully enclosed load-type ejection fuse, a circuit fault monitoring system includes a line detection unit, a data receiving unit, a power conversion unit and an alarm unit, the line detection unit uses a segment-by-segment method, an AC and DC method and a power quality parameter analysis method to troubleshoot circuit faults, the data receiving unit uses a central processor to receive data collected by the line detection unit when troubleshooting circuit faults and analyzes and processes the data, the power conversion unit determines whether it is necessary to convert the protected circuit to another power fuse based on the result of the data analysis and processing, the alarm unit interacts with the central control system of the power grid, and the alarm unit sends an alarm message to the central monitoring system of the power grid when the central processor receives abnormal data The segment-by-segment method first divides the circuit into segments, and checks and analyzes whether there is a circuit fault segment by segment. If there is a circuit fault, the circuit segment is checked in detail to determine the area where the fault exists in the circuit segment and the type of circuit fault. The AC and DC method observes the response of the circuit under different power supply modes by applying AC and DC voltages at the same time to determine the location of the fault. The power quality parameter analysis method uses a central processing unit to collect and compare power quality parameters to understand the operation status and potential problems of the circuit system. Power quality parameters include one or more of voltage, temperature, current, power factor, frequency, harmonics, voltage fluctuation and flicker, voltage sag and short interruption, transient overvoltage, waveform distortion and power supply continuity.

[0046] Furthermore, the power fault monitoring system determines whether there is a circuit fault in the protected circuit through the line monitoring unit, and collects and processes the detected parameters through the central processing unit. When the section-by-section method is selected to troubleshoot the circuit fault, the circuit is first divided into several sections, and a circuit detection device is connected to each section of the circuit. Then, the circuit fault is checked and analyzed section by section. When a fault is detected in a certain section of the circuit, the location of the section of the circuit is determined, and then the type and impact of the circuit fault are further determined. According to the detection results, it is determined whether it is necessary to convert the protected circuit to a fuse body 4 with different power specifications. The power quality monitor 7 can monitor the power quality parameters in real time and transmit the data to the central control system of the power grid, which is helpful to timely discover and solve power quality problems, improve the reliability and stability of the power system, and can select a fuse with suitable fuse specifications and fusing characteristics according to the detected power quality parameters and the specific conditions and needs of the circuit, which can reduce the risk of false operation or leakage of the fuse to a certain extent, and improve the safety and stability of the circuit.

[0047] See also Figure 3 and Figure 5 An embodiment of the present invention is: a composite fully enclosed load-type ejection fuse, the mounting assembly 2 includes a mounting plate 15 connected to the back of the fixing assembly 1 by bolts, and the front of the mounting plate 15 is in contact with the back of the storage box 6, and the front of the mounting plate 15 is penetrated by symmetrically arranged mounting grooves, and the mounting grooves are located below the storage box 6, and a supporting plate 16 is installed at the bottom of the mounting plate 15.

[0048] Furthermore, by providing the support plate 16, the fuse body 4 in the fixed assembly 1 can be supported, thereby reducing the force of the fuse body 4 sliding downward and improving the support for the fuse body 4. By arranging the mounting plate 15, the fuse can be firmly fixed at different positions, thereby improving the convenience of installation and layout.

[0049] See also Figure 5 and Figure 6 An embodiment of the present invention is a composite fully enclosed load-type ejection fuse, wherein the fall-off monitoring component 5 includes a placement plate 13 installed at the bottom of the fixing component 1, and the placement plate 13 is provided with two groups, and the outer walls on both sides of the placement plate 13 are installed with front-to-back arranged laser displacement sensors 14.

[0050] Furthermore, when the fixing assembly 1 is used to connect the fuse bodies 4, an appropriate number of placement plates 13 are arranged at the bottom of the fixing plate 10 according to the number of fuse bodies 4, and the distance between the laser displacement sensor 14 and the outer surface of the sealing plug at the bottom of the fuse body 4 is recorded as A. In the subsequent actual use process, when the actual distance between the laser displacement sensor 14 and the outer surface of the sealing plug is greater than A, it means that the sealing plug has fallen off from the porcelain bushing and the protected circuit is short-circuited. When the actual distance between the laser displacement sensor 14 and the outer surface of the sealing plug is less than A, and the optical receiver cannot receive the light signal emitted by the optical transmitter, it means that the porcelain bushing has fallen off from the fixing assembly 1. When the actual distance between the laser displacement sensor 14 and the outer surface of the sealing plug is equal to A, it means that the position of the sealing plug has not changed and monitoring continues.

[0051] See also Figure 5 An embodiment of the present invention is as follows: a composite fully enclosed load-type ejection fuse, wherein a fixing assembly 1 comprises a fixing plate 10 attached to the outer surface of a fuse body 4, and two groups of fixing plates 10 are provided, wherein a limiting hole 11 is provided on the front of one group of fixing plates 10, a limiting rod 12 is fitted inside the limiting hole 11, and the front of the limiting rod 12 is connected to the back of the other group of fixing plates 10, and the two groups of fixing plates 10 are connected by screws, and light emitters and light receivers are respectively installed on surfaces of the two groups of fixing plates 10 close to each other, and the light receivers are electrically connected to the light emitters, and the light emitters and light receivers are used to judge the degree of connection tightness of the two groups of fixing plates 10, and the bottom of the fixing plate 10 is connected to the top of the storage plate 13.

[0052] Furthermore, before using the fuse, first select a suitable number of fuse bodies 4, then attach the fixing plates 10 to the outer surface of the fuse bodies 4, and assemble the two groups of fixing plates 10 together by engaging the limit rods 12 and the limit holes 11, and then connect the two groups of fixing plates 10 through screws. At this time, the optical receiver can receive the optical signal emitted by the optical transmitter. When the optical receiver cannot receive the optical signal emitted by the optical transmitter, it indicates that there is a possibility of looseness between the two groups of fixing plates 10, and sends early warning information to the central control system of the power grid to determine the area where the fixing component 1 is loose, thereby improving the safety and stability of the fuse when used.

[0053] Working principle: When using the composite fully enclosed load-type ejection fuse, first select the fuse body 4 of the appropriate number and power specification, then put the fixing plate 10 on the surface of the fuse body 4, and connect the fixing plates 10 together through screws, and then connect the mounting plate 15 to the back of one set of fixing plates 10 through bolts, so that the supporting plate 16 can play a certain supporting role on the fuse body 4, and then the fuse can be fixed at the desired position through the mounting assembly 2;

[0054] In the subsequent use process, the current, voltage and temperature parameters of the protected circuit are detected by the power quality monitor 7, and the protection circuit is connected to the fuse body 4 of the appropriate power model according to the detection results, so as to determine the appropriate fuse according to the current fault characteristics of the protected circuit and the actual working current, thereby reducing the probability of the fuse failing to work due to an obscure fault, and detecting the temperature of the line joint and the shedding of the sealing plug through the patrol temperature measurement module and the shedding monitoring module, and sending an early warning message when an abnormal situation is detected, so as to avoid the situation where the overall safety of the protected circuit is affected by line disconnection.

[0055] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A composite fully enclosed load-type ejection fuse, characterized in that: The invention comprises a fixing component (1), a mounting component (2) and a power conversion component (3), wherein the back of the fixing component (1) is connected to the mounting component (2), the front of the mounting component (2) is fixed with the power conversion component (3) by bolts, and the power conversion component (3) is used to convert the circuit to a fuse with appropriate power according to the fault current characteristics and working current of the circuit to be protected; The power conversion assembly (3) comprises a storage box (6) fixed on the front of the mounting assembly (2); a power quality monitor (7) and symmetrically arranged data collectors (9) are installed on the bottom wall of the storage box (6); the power quality monitor (7) is located between the two groups of data collectors (9); the power quality monitor (7) is equipped with a circuit fault monitoring system; the power quality monitor (7) is used to monitor power quality parameters in the protected circuit and to issue early warnings and alarms; The data collector (9) is equipped with a lead joint detection system, and the lead joint detection system is used to detect the connection status of the fuse and the power quality monitor (7) and the use status of the fuse.

2. A composite fully enclosed load-type ejection fuse according to claim 1, characterized in that: The lead connector detection system comprises a patrol temperature measurement module and a fall-off monitoring module, wherein the patrol temperature measurement module comprises an infrared sensor (8) installed on the inner walls of both sides of the storage box (6), and the fall-off monitoring module comprises a fall-off monitoring component (5) installed at the bottom of the fixed component (1), a fuse body (4) is installed inside the fixed component (1), and the fall-off monitoring component (5) is used to detect the fall-off of the fuse body (4), and the fuse body (4) comprises a porcelain bushing, a sealing cover and an inlet wire, and the sealing cover is embedded in the bottom of the porcelain bushing.

3. A composite fully enclosed load-type ejection fuse according to claim 1, characterized in that: The circuit fault monitoring system includes a line detection unit, a data receiving unit, a power conversion unit and an alarm unit. The line detection unit uses a segment-by-segment method, an AC and DC method and a power quality parameter analysis method to troubleshoot circuit faults. The data receiving unit uses a central processor to receive data collected by the line detection unit when troubleshooting circuit faults and analyzes and processes the data. The power conversion unit determines whether it is necessary to convert the protected circuit to a fuse of another power based on the result of the data analysis and processing. The alarm unit interacts with the central control system of the power grid. When the central processor receives abnormal data, the alarm unit sends an alarm message to the central monitoring system of the power grid.

4. A composite fully enclosed load-type ejection fuse according to claim 2, characterized in that: The mounting assembly (2) comprises a mounting plate (15) connected to the back of the fixing assembly (1) by bolts, and the front of the mounting plate (15) is in contact with the back of the storage box (6), the front of the mounting plate (15) is provided with symmetrically arranged mounting grooves, and the mounting grooves are located below the storage box (6), a supporting plate (16) is installed at the bottom of the mounting plate (15), the bottom of the porcelain sleeve is in contact with the top of the supporting plate (16), and a sealing cover is located on one side of the supporting plate (16).

5. A composite fully enclosed load-type ejection fuse according to claim 2, characterized in that: The fall-off monitoring component (5) comprises a storage plate (13) mounted on the bottom of the fixing component (1), and two groups of storage plates (13) are provided. The outer walls on both sides of the storage plates (13) are both mounted with laser displacement sensors (14) arranged front and back, and the distance between the outer surface of the sealing cover and the laser displacement sensor (14) is A.

6. A composite fully enclosed load-type ejection fuse according to claim 3, characterized in that: The segment-by-segment method first divides the circuit into segments, and checks and analyzes whether there is a circuit fault segment by segment. If there is a circuit fault, the circuit segment is checked in detail to determine the area where the fault exists in the circuit segment and the type of the circuit fault. The AC and DC method applies AC and DC voltages simultaneously to observe the circuit's response under different power modes, thereby determining the location of the fault. The power quality parameter analysis method uses a central processor to collect and compare power quality parameters to understand the operation status and potential problems of the circuit system.

7. A composite fully enclosed load-type ejection fuse according to claim 5, characterized in that: The fixing assembly (1) comprises a fixing plate (10) attached to the outer surface of the fuse body (4), and two groups of fixing plates (10) are provided, wherein a limiting hole (11) is provided on the front of one group of fixing plates (10), a limiting rod (12) is fitted inside the limiting hole (11), and the front of the limiting rod (12) is connected to the back of the other group of fixing plates (10), the two groups of fixing plates (10) are connected by screws, and light emitters and light receivers are respectively installed on surfaces of the two groups of fixing plates (10) that are close to each other, and the light receivers are electrically connected to the light emitters, and the light emitters and light receivers are used to judge the degree of connection tightness of the two groups of fixing plates (10), and the bottom of the fixing plate (10) is connected to the top of the storage plate (13).

8. A composite fully enclosed load-type ejection fuse according to claim 2, characterized in that: The fuse bodies (4) are provided in two groups, and the two groups of fuse bodies (4) have different powers, and the two groups of fuse bodies (4) are connected in parallel.

9. A composite fully enclosed load-type ejection fuse according to claim 2, characterized in that: An upper fastener is installed on the top of the porcelain bushing, an inlet line is arranged inside the upper fastener, and one end of the inlet line is connected to the output end of the power quality monitor (7).

10. A composite fully enclosed load-type ejection fuse according to claim 1, characterized in that: The power quality parameters include one or more of voltage, temperature, current, power factor, frequency, harmonics, voltage fluctuation and flicker, voltage sag and short interruption, transient overvoltage, waveform distortion and power supply continuity.

Images