Single-phase earth fault early warning device for power distribution network

Abstract

The invention belongs to the technical field of power distribution networks, and particularly discloses a power distribution network single-phase earth fault early warning device. Comprising a box body, one side of the top of the box body is rotatably connected with a box cover, the interior of the box body is detachably connected with a fault early warning positioning instrument, the fault early warning positioning instrument is used for fault detection early warning and fault position positioning, the two sides of the fault early warning positioning instrument are each provided with a wedging groove, and the wedging grooves are used for providing installation positions. A protection mechanism is arranged outside the box body, the protection mechanism is used for protecting the device, and a temperature regulation and control mechanism is arranged on the outer side of the fault early warning positioning instrument. Through the arrangement of the protection mechanism, the outside of the device is wrapped by a protection air bag, so that when the device is impacted or falls, the impact force can be greatly reduced, the damage of the early warning device is avoided, the economic loss is avoided, the use is not delayed, and the detection efficiency is further improved.

Description

Technical Field

[0001] The invention belongs to the technical field of power distribution networks, and specifically discloses a single-phase grounding fault early warning device for a power distribution network. Background Art

[0002] The distribution network is the section of the power system from the step-down distribution substation outlet to the user end. It consists of a variety of distribution equipment and facilities. Its main function is to distribute electrical energy and ensure that electricity is safely and reliably delivered to end users. The distribution network usually adopts a closed-loop design and open-loop operation to improve operational flexibility and power supply reliability.

[0003] In the prior art, a patent with publication number CN117347775A provides a distribution network fault warning device, including a warning box, a warning assembly is clamped on the top of the warning box, the warning assembly includes a capping member, a plurality of warning members clamped on the capping member, a plurality of knife members fixedly connected to the top of the capping member, a plurality of cut-off members slidably fitted on the capping member, and a plugging member rotatably fitted inside the warning member, the cut-off member slidingly fits with the warning member, and the plugging member meshes with the cut-off member. The device solves and can detect the concentration of sulfur fluoride gas in the distribution network, and determines whether an electrical equipment in the distribution network fails based on the detected value, thereby achieving a warning effect of a distribution network circuit failure, and can remind maintenance personnel that a circuit breaker fault occurs in the distribution network circuit, which is convenient for maintenance personnel to perform maintenance and repair of the circuit breaker fault in the distribution network at a later time.

[0004] In the above patent, the concentration of sulfur fluoride gas in the distribution network can be detected, and whether the electrical equipment in the distribution network is faulty can be determined based on the detected value; however, the single-phase grounding fault warning devices of the distribution network in the prior art are mostly easy to carry, which is convenient for staff to detect the distribution network. The scenarios in which such warning devices are used are relatively complex, and they are easily dropped due to accidental contact during distribution network detection. At the same time, the protection measures of the warning devices in the prior art are mainly the outer shell and rubber blocks, and the buffering degree is low, resulting in damage to the electronic components inside the device due to the impact of the fall, causing damage to the warning device, resulting in economic losses, and delaying the detection and warning of the distribution network, reducing the detection efficiency. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a single-phase grounding fault warning device for a distribution network to solve the problem that the protection measures of the warning device in the prior art are relatively simple and the buffering degree is low, which causes damage to the warning device, delays the use of the device, and reduces the detection efficiency.

[0006] To achieve the above objectives, the present invention provides a single-phase grounding fault warning device for a distribution network, comprising a box body, a box cover being rotatably connected to one side of the top of the box body, a fault warning locator being detachably connected to the inside of the box body, the fault warning locator being used for fault detection and warning and fault location positioning, matching grooves being provided on both sides of the fault warning locator, the matching grooves being used to provide installation positions, a protection mechanism being provided on the outside of the box body, the protection mechanism being used to protect the device, a temperature control mechanism being provided on the outside of the fault warning locator, the temperature control mechanism being used for dust-free heat dissipation, two supporting mechanisms being rotatably connected to the inside of the matching groove, the supporting mechanism being used to support the box cover, and a display screen being fixedly connected to the inside of the box cover.

[0007] In the above technical solution, preferably, the protection mechanism includes a micro air pump, the bottom of the micro air pump is fixedly connected to the inner bottom end of the box body, the output end of the micro air pump is fixedly connected to a connecting pipe, the end of the connecting pipe away from the micro air pump is threadedly connected to a mounting tube, the interior of the mounting tube is fixedly connected to a pressure spring, the end of the pressure spring close to the micro air pump is fixedly connected to an air baffle, a plurality of ventilation holes are provided inside the outer edge of the air baffle, the top of the mounting tube is fixedly connected to an air deflation cylinder, and the inner bottom end of the air deflation cylinder is fixedly connected to a top A lifting spring, the top of the lifting spring is fixedly connected with a driving deflation plate, a plurality of deflation holes are opened inside the outer edge of the driving deflation plate, the top of the driving deflation plate is fixedly connected with a deflation hollow column, a plurality of exhaust holes 1 are opened at the bottom end of the outer wall of the deflation hollow column, a plurality of exhaust holes 2 are opened at the top end of the outer wall of the deflation hollow column, an inflation tube is threadedly connected to the end of the mounting tube away from the micro air pump, a protective air bag is fixedly connected to the outside of the box body and the box cover, and an end of the inflation tube away from the mounting tube is fixedly connected to a side of the protective air bag close to the box body.

[0008] In the above technical scheme, preferably, the temperature control mechanism comprises a spliced ​​elbow, one end of the spliced ​​elbow is fixedly connected to the outside of the connecting pipe, and the other end of the spliced ​​elbow is threadedly connected to a filter box, the interior of the spliced ​​elbow is fixedly connected to a pressure spring, the pressure spring is fixedly connected to a limiting air plug at one end close to the connecting pipe, a plurality of air inlet holes are provided inside the outer periphery of the limiting air plug, a plurality of filter plates are fixedly connected to the interior of the filter box, an end of the filter box away from the spliced ​​elbow is threadedly connected to a connecting ventilation elbow, both sides of the fault warning locator are fixedly connected to air outlet heat dissipation plates, a plurality of connecting air pipes are fixedly connected between the two air outlet heat dissipation plates, an end of the connecting ventilation elbow away from the filter box is fixedly connected to the outside of one of the air outlet heat dissipation plates, the interior of the fault warning locator is fixedly connected to a shell, the interior of the shell is slidably connected to a limiting ring, the top of the limiting ring is fixedly connected to a movable air outlet cap, and the outer wall of the movable air outlet cap is provided with a plurality of air outlet grooves.

[0009] In the above technical scheme, preferably, the supporting mechanism includes two movable struts 1, the bottom of the movable strut 1 is rotatably connected to the inside of the fitting groove, the top of the movable strut 1 is fixedly connected to an extension rod, the inside of the extension rod is fixedly connected to a return spring, the inside of the extension rod is slidably connected to a limiting plate, the side of the limit plate away from the return spring is fixedly connected to a clamping head, the top of the clamping head is rotatably connected to a movable strut 2, the bottom of the movable strut 2 is provided with an adaptive clamping groove, the outer side of the movable strut 2 is fixedly connected to a fixed sleeve, the inside of the fixed sleeve is slidably connected to a limiting ring, the middle part of the limiting ring is fixedly connected to a push rod, the inner side of the movable strut 2 is located on one side of the push rod and a clamping hole is provided, and the clamping head is engaged with the clamping hole.

[0010] In the above technical solution, preferably, the air baffle plate is slidably connected to the inside of the installation tube, and the air-deflating plate is slidably connected to the inside of the air-deflating tube.

[0011] In the above technical solution, preferably, a round handle is fixedly connected to the top of the deflated hollow column, and a protective sleeve is provided on the outside of the round handle.

[0012] In the above technical solution, preferably, the limiting air plug is slidably connected to the inside of the spliced ​​elbow, and the air outlet groove is located inside the outer shell.

[0013] In the above technical solution, preferably, the outside of the movable air outlet cap is slidably connected to the top of the shell, and the opposite sides of the two air outlet heat dissipation plates respectively penetrate the two sides of the fault warning locator.

[0014] In the above technical solution, preferably, one end of the support rod away from the second movable support rod is fixedly connected with a pressing handle, and the extension rod is arranged inside the adaptive slot.

[0015] In the above technical solution, preferably, a side of the return spring close to the chuck is fixedly connected to a side of the limit plate away from the chuck, and a side of the chuck away from the return spring is a curved surface.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention realizes the use of protective airbags to wrap the outside of the device through the setting of a protective mechanism, so that when the device is hit or falls, the impact force can be reduced to a large extent, thereby protecting the electronic components inside the early warning device, avoiding damage to the early warning device, avoiding economic losses, and not delaying the use, thereby further improving the detection efficiency.

[0018] 2. The present invention uses a micro air pump to inflate the interior of the temperature control mechanism, and filters impurities in the air through a filter plate, and then the air without impurities can be passed into the interior of the fault warning locator, thereby cooling the fault warning locator, and there will be no impurities damaging the electronic components inside the device, and then it can achieve sufficient cooling while increasing the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The three-dimensional Figure 1 ;

[0020] Figure 2 The three-dimensional Figure 2 ;

[0021] Figure 3 It is a schematic diagram of the structure of the protective airbag in the present invention;

[0022] Figure 4 It is a structural schematic diagram of the air outlet heat dissipation plate in the present invention;

[0023] Figure 5 It is a structural schematic diagram of the installation cylinder in the present invention;

[0024] Figure 6 It is a structural schematic diagram of the air baffle in the present invention;

[0025] Figure 7 It is a schematic diagram of the structure of the limiting air plug in the present invention;

[0026] Figure 8 It is a structural schematic diagram of the filter plate in the present invention;

[0027] Fig. 9It is a schematic diagram of the structure of the movable air outlet cap in the present invention;

[0028] Fig.10 It is a structural schematic diagram of the extension rod in the present invention;

[0029] Fig.11 It is a schematic diagram of the structure of the limit ring in the present invention;

[0030] Fig.12 It is a structural schematic diagram of the clamping hole in the present invention.

[0031] In the figure: 1, box body; 2, box cover; 3, fault warning locator; 4, fitting groove; 5, protection mechanism; 501, micro air pump; 502, connecting pipe; 503, installation cylinder; 504, pressure spring; 505, air baffle; 506, vent hole; 507, deflation cylinder; 508, lifting spring; 509, driving deflation plate; 510, deflation hole; 511, deflation hollow column; 512, exhaust hole 1; 513, exhaust hole 2; 514, round handle; 515, inflation tube; 516, protective airbag; 6, temperature control mechanism; 601, splicing elbow; 602, pressure spring; 603, limit 1. Air plug; 604. Air inlet; 605. Filter box; 606. Filter plate; 607. Connecting ventilation elbow; 608. Air outlet heat sink; 609. Connecting air pipe; 610. Shell; 611. Limiting ring; 612. Movable air outlet cap; 613. Air outlet slot; 7. Support mechanism; 701. Movable support rod 1; 702. Extension rod; 703. Return spring; 704. Limiting plate; 705. Clamp head; 706. Movable support rod 2; 707. Adaptive clamping slot; 708. Fixed sleeve; 709. Limiting ring; 710. Push rod; 711. Press handle; 712. Clamping hole; 8. Display screen. DETAILED DESCRIPTION

[0032] In order to more clearly understand the above-mentioned objects, features and advantages of the present invention, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0033] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0034] Example 1

[0035] like Figure 1-Figure 12A single-phase grounding fault warning device for a distribution network shown in the figure comprises a box body 1, a box cover 2 is rotatably connected to one side of the top of the box body 1, the box cover 2 can protect the device, a fault warning locator 3 is detachably connected to the inside of the box body 1, the fault warning locator 3 is used for fault detection and warning and fault location positioning, matching grooves 4 are provided on both sides of the fault warning locator 3, the matching grooves 4 are used to provide an installation position, a protection mechanism 5 is arranged on the outside of the box body 1, the protection mechanism 5 is used to protect the device, a temperature control mechanism 6 is arranged on the outside of the fault warning locator 3, the temperature control mechanism 6 is used for dust-free heat dissipation, prevents impurities in the air from entering the inside of the fault warning locator 3, and improves the service life of the fault warning locator 3, the inner side of the matching groove 4 is rotatably connected to two supporting mechanisms 7, the supporting mechanism 7 is used to support the box cover 2, can prevent the box cover 2 from rotating and falling and hitting the fault warning locator 3 due to shaking when the device is in use, thereby protecting the device, and a display screen 8 is fixedly connected to the inner side of the box cover 2.

[0036] The protection mechanism 5 includes a micro air pump 501, which can input gas. The bottom of the micro air pump 501 is fixedly connected to the inner bottom end of the box body 1. The output end of the micro air pump 501 is fixedly connected to a connecting pipe 502, which serves to connect the gas. The end of the connecting pipe 502 away from the micro air pump 501 is threadedly connected to a mounting tube 503, which provides a mounting space. The interior of the mounting tube 503 is fixedly connected to a pressure spring 504, and the end of the pressure spring 504 close to the micro air pump 501 is fixedly connected to an air baffle 505. A plurality of ventilation holes 506 are provided inside the outer edge of the air baffle 505, and the ventilation holes 506 can be ventilated. The top of the mounting tube 503 is fixedly connected to an air release cylinder 507, which It plays the role of providing installation space. The inner bottom end of the deflation cylinder 507 is fixedly connected with a lifting spring 508. The top of the lifting spring 508 is fixedly connected with a driving deflation plate 509. A plurality of deflation holes 510 are provided inside the outer edge of the driving deflation plate 509. The deflation holes 510 play the role of ventilation. The top of the driving deflation plate 509 is fixedly connected with a deflation hollow column 511. The bottom end of the outer wall of the deflation hollow column 511 is provided with a plurality of exhaust holes 1 512. The top end of the outer wall of the deflation hollow column 511 is provided with a plurality of exhaust holes 2 513. The exhaust holes 1 512 cooperate with the exhaust holes 2 513 to discharge gas and play the role of pressure relief. The end of the installation cylinder 503 away from the micro air pump 501 is threadedly connected with an inflation tube 515, and the inflation tube 515 plays the role of connection , the outside of the box body 1 and the box cover 2 are fixedly connected with a protective airbag 516, and the protective airbag 516 has a protective function. The end of the inflation tube 515 away from the mounting tube 503 is fixedly connected to the side of the protective airbag 516 close to the box body 1, and the air baffle 505 is slidably connected to the inside of the mounting tube 503, driving the deflation plate 509 to be slidably connected to the inside of the deflation tube 507, and the top of the deflation hollow column 511 is fixedly connected with a round handle 514, and the round handle 514 increases the pressing area, which is convenient for pressing the deflation hollow column 511 downward, and the outer sleeve of the round handle 514 is provided with a protective sleeve, which increases friction, increases softness, and improves the comfort of pressing. First, start the micro air pump 501, and the output end of the micro air pump 501 inflates the inside of the connecting tube 502 Since the elastic coefficient of the spring in the temperature control mechanism 6 is greater than the elastic coefficient of the pressure spring 504, the gas will overcome the elastic force of the pressure spring 504 to push the air baffle 505 to move in the direction of the inflation tube 515. Therefore, the air vent 506 lacks the obstruction of the edge of the mounting tube 503. At this time, the gas enters the interior of the inflation tube 515 through the air vent 506, and enters the interior of the protective airbag 516 through the interior of the inflation tube 515, so that the protective airbag 516 can be blown up and expanded. When the protective airbag 516 expands to a certain extent, under the action of the air pressure and the elasticity of the pressure spring 504, the air baffle 505 will be pushed to move in the direction of the micro air pump 501, and the air vent 506 will be blocked by the edge of the mounting tube 503.When the protective airbag 516 is hit, the internal gas will enter the interior of the installation cylinder 503 through the inflation tube 515 and give the air baffle plate 505 a force toward the micro air pump 501, so that the gas inside the protective airbag 516 will not be discharged through the vent hole 506. When the installation cylinder 503 is filled with gas, it will give an upward force to the degassing plate 509, so that the top of the degassing cylinder 507 can be used to seal the degassing hole 510, and then the gas will not be discharged through the degassing hole 510 and the exhaust hole 512. When pressure relief is needed, the micro air pump 501 is used to seal the degassing hole 510. The pump 501 is turned off, and the handle 514 is pressed downward, so that the deflated hollow column 511 can be driven to move downward, and the deflated plate 509 is driven to move downward through the deflated hollow column 511, thereby compressing the jacking spring 508. When the exhaust hole 1 512 on the deflated hollow column 511 moves to the inside of the deflated cylinder 507, the gas is discharged through the deflated hole 510 to the top of the deflated plate 509, and enters the inside of the deflated hollow column 511 through the exhaust hole 1 512, and then discharged through the exhaust hole 2 513, so that the gas inside the protective airbag 516 is discharged.

[0037] The temperature control mechanism 6 includes a spliced ​​elbow 601, which plays a connecting role. One end of the spliced ​​elbow 601 is fixedly connected to the outside of the connecting pipe 502, and the other end of the spliced ​​elbow 601 is threadedly connected to a filter box 605. The filter box 605 provides an installation position. The interior of the spliced ​​elbow 601 is fixedly connected to a pressure spring 602. The pressure spring 602 is fixedly connected to a limited air plug 603 at one end close to the connecting pipe 502. The limited air plug 603 has a blocking effect. A plurality of air inlet holes 604 are provided inside the periphery of the limited air plug 603. The air inlet holes 604 have a ventilation effect. A plurality of filter plates 606 are fixedly connected to the interior of the filter box 605. The material of the filter plate 606 is usually made of ultra-fine glass fiber, which plays a filtering role. The air acts as a filter box 605, one end of which is away from the splicing elbow 601, is threadedly connected with a connecting ventilation elbow 607, which serves as a ventilation connection. Both sides of the fault warning locator 3 are fixedly connected with air outlet heat sinks 608, which expand the air outlet area. A plurality of connecting air pipes 609 are fixedly connected between the two air outlet heat sinks 608, which serve as a connection. One end of the connecting ventilation elbow 607 away from the filter box 605 is fixedly connected to the outside of one of the air outlet heat sinks 608. The interior of the fault warning locator 3 is fixedly connected with a shell 610, which provides an installation space and can be exhausted. The interior of the shell 610 is slidably connected with a limit ring 611, which limit ring 611 The top of the protective airbag 516 is fixedly connected with a movable air outlet cap 612, and the outer wall of the movable air outlet cap 612 is provided with a plurality of air outlet grooves 613. The limiting air plug 603 is slidably connected to the inside of the spliced ​​elbow 601, and the air outlet grooves 613 are located inside the shell 610. The outside of the movable air outlet cap 612 is slidably connected to the top of the shell 610. The opposite sides of the two air outlet heat dissipation plates 608 respectively penetrate the two sides of the fault warning locator 3. When the gas in the protective airbag 516 is enough, the gas pressure inside the mounting tube 503 cooperates with the elastic force of the pressure spring 504. At this time, the pressure of the gas pushing the air baffle 505 is greater than the pressure pushing the limiting air plug 603. Therefore, the limiting air plug 603 will move in the direction of the pressure spring 602 under the action of the gas pressure, and then The pressure spring 602 is compressed, and at this time, the air inlet 604 is not blocked by the inner wall of the spliced ​​elbow 601 close to the connecting pipe 502, so the gas will enter the interior of the spliced ​​elbow 601 through the air inlet 604, and then enter the interior of the filter box 605, and the filter plate 606 inside the filter box 605 will filter the incoming air, and then it can prevent impurities in the air from entering the connecting ventilation elbow 607. Therefore, the air entering the air outlet heat sink 608 through the connecting ventilation elbow 607 is relatively clean, and the air outlet heat sink 608 is used to send the air to the interior of the fault warning locator 3, so as to dissipate heat for the fault warning locator 3, and no impurities will enter the interior of the fault warning locator 3, thereby protecting the electronic components inside the fault warning locator 3.The service life of the fault warning locator 3 is improved. Since the interior of the fault warning locator 3 is a relatively sealed environment, the gas entering the fault warning locator 3 will enter the interior of the shell 610 and push the limit ring 611 to move upward, which will drive the movable air outlet cap 612 to move upward. When the movable air outlet cap 612 moves upward, the air outlet groove 613 on the movable air outlet cap 612 will move out of the interior of the shell 610, and then the air can be discharged through the air outlet groove 613. When no air enters the interior of the shell 610, the movable air outlet cap 612 will move downward under the action of gravity, forcing the air outlet groove 613 to move into the interior of the shell 610. Therefore, the shell 610 can be used to block the air outlet groove 613 to prevent the outside air with impurities from entering the interior of the fault warning locator 3, thereby ensuring the cleanliness of the inside of the fault warning locator 3, and preventing the outside impurities from entering the interior of the fault warning locator 3 while playing a role in heat dissipation.

[0038] The supporting mechanism 7 includes two movable struts 701, the bottom of the movable strut 701 is rotatably connected to the inside of the fitting groove 4, the top of the movable strut 701 is fixedly connected to an extension rod 702, the inside of the extension rod 702 is fixedly connected to a return spring 703, the inside of the extension rod 702 is slidably connected to a limit plate 704, the return spring 703 can provide power for the return of the limit plate 704, the limit plate 704 plays a role of limiting, the side of the limit plate 704 away from the return spring 703 is fixedly connected to a clamping head 705, the top of the clamping head 705 is rotatably connected to a movable strut 2 706, the movable strut 1 701 and the movable strut 2 706 can cooperate to play a supporting role, and the bottom of the movable strut 2 706 is provided with an adaptable clamping groove 707, which is adapted to The slot 707 can provide a position for accommodating the extension rod 702. The outer side of the movable strut rod 706 is fixedly connected with a fixed sleeve 708. The fixed sleeve 708 provides an installation space. The inner sliding connection of the fixed sleeve 708 is a limiting ring 709. The limiting ring 709 plays a limiting role. The middle part of the limiting ring 709 is fixedly connected with a push rod 710. The inner side of the movable strut rod 706 is located on one side of the push rod 710 and a clamping hole 712 is provided. The push rod 710 can release the clamping head 705 from the clamping hole 712 by squeezing the clamping head 705 out of the clamping hole 712, thereby facilitating the extension rod 702 to rotate out of the interior of the adaptable slot 707. The clamping head 705 is engaged with the clamping hole 712, and the push rod 710 is away from one end of the movable strut rod 706. The locking cam 706 is fixedly connected to the locking cam 708, and the locking cam 708 is fixedly connected to the locking cam 708 on the side of the locking cam 708. The locking cam 706 is fixedly connected to the locking cam 708 on the side of the locking cam 708. The locking cam 706 is fixedly connected to the locking cam 708 on the side of the locking cam 708. The locking cam 706 is fixedly connected to the side of the limiting plate 704 away from the limiting plate 704, and the side of the limiting plate 704 away from the locking cam 705 is a curved surface. When the box cover 2 is rotated to open, the movable strut 1 701 and the movable strut 2 706 in the folded state will be straightened, forcing the extension rod 702 to move into the interior of the adaptation slot 707. Because the outer side of the clamp 705 is a curved surface, the movable strut 2 706 is located at the groove of the fixed sleeve 708. The clamp 705 drives the limiting plate 704 to move into the interior of the extension rod 702, so that the box cover 2 can be opened. The extension rod 702 rotates smoothly into the interior of the adaptive slot 707, and when the clamp head 705 moves to the clamping hole 712, the return spring 703 drives the limit plate 704 to move in the direction of the fixed sleeve 708, thereby driving the clamp head 705 to move into the interior of the clamping hole 712, completing the clamping of the clamping hole 712 and the clamp head 705, thereby forcing the movable support rod 1 701 and the movable support rod 2 706 not to fold, and then the movable support rod 1 701 and the movable support rod 2 706 can be used to support the box cover 2 in the straightened state, so as to prevent the box cover 2 from rotating and falling and hitting the fault warning locator 3 when the device is in use. Therefore, it plays a protective role. After the use of the device is finished, press the pressing handle 711,The pressing handle 711 will drive the lever 710 to move in the direction of the card slot 707, and then squeeze the card head 705 and force the card head 705 to move inside the extension rod 702, thereby releasing the engagement between the card head 705 and the card hole 712. At this time, the joint between the movable support rod 1 701 and the movable support rod 2 706 can be bent in the direction of the box cover 2, and then the box cover 2 can be rotated and covered on the top of the box body 1, making it convenient to carry the device.

[0039] Working principle: When the early warning device is used, the micro air pump 501 is first started, and the output end of the micro air pump 501 inflates the interior of the connecting tube 502. Since the elastic coefficient of the pressurized spring 602 is greater than the elastic coefficient of the pressure spring 504, the gas will overcome the elastic force of the pressure spring 504 to push the air baffle 505 to move in the direction of the inflation tube 515. Therefore, the air vent 506 lacks the obstruction of the edge of the mounting tube 503. At this time, the gas enters the inflation tube 515 through the air vent 506. The airbag 516 is blown up and expanded. When the airbag 516 expands to a certain extent, the air pressure and the elasticity of the pressure spring 504 push the air baffle 505 to move in the direction of the micro air pump 501, and the air vent 506 is blocked by the edge of the mounting tube 503. When the airbag 516 is hit, the gas inside enters the mounting tube 503 through the air inflation tube 515. 03 and gives a force to the air baffle plate 505 toward the micro air pump 501, so that the gas inside the protective airbag 516 will not be discharged through the vent hole 506. When the installation cylinder 503 is filled with gas, it will give an upward force to drive the air release plate 509, so that the air release hole 510 can be sealed by the top of the air release cylinder 507, and then the gas will not be discharged through the air release hole 510 and the exhaust hole 512. When pressure relief is required, the micro air pump 501 is closed, and the round handle 514 is moved downward. By pressing, the deflated hollow column 511 can be driven to move downward, and the deflated plate 509 can be driven to move downward through the deflated hollow column 511, thereby compressing the lifting spring 508. When the exhaust hole 1 512 on the deflated hollow column 511 moves to the inside of the deflated cylinder 507, the gas is discharged to the top of the driving deflated plate 509 through the deflated hole 510, and enters the inside of the deflated hollow column 511 through the exhaust hole 1 512, and then discharged through the exhaust hole 2 513, so that the gas inside the protective airbag 516 is discharged;

[0040] When there is enough gas in the protective airbag 516, the gas pressure inside the mounting tube 503 cooperates with the elastic force of the pressure spring 504. At this time, the pressure of the gas pushing the air baffle 505 is greater than the pressure pushing the limit air plug 603. Therefore, the limit air plug 603 will move in the direction of the pressure spring 602 under the action of the gas pressure, and then compress the pressure spring 602. At this time, the air inlet 604 is not blocked by the inner wall of the spliced ​​elbow 601 close to the connecting pipe 502, so the gas will pass through the air inlet 604. The air enters the interior of the spliced ​​elbow 601, and then enters the interior of the filter box 605. The filter plate 606 inside the filter box 605 filters the incoming air, and then it can prevent impurities in the air from entering the connecting ventilation elbow 607. Therefore, the air entering the air outlet heat sink 608 through the connecting ventilation elbow 607 is relatively clean, and the air outlet heat sink 608 is used to send the air to the interior of the fault warning locator 3, so as to dissipate heat for the fault warning locator 3, and no impurities will enter the fault warning locator 3. The interior protects the electronic components inside the fault warning locator 3 and improves the service life of the fault warning locator 3. Since the interior of the fault warning locator 3 is a relatively sealed environment, the gas entering the fault warning locator 3 at this time will enter the interior of the shell 610 and push the limit ring 611 to move upward, which will drive the movable air outlet cap 612 to move upward. When the movable air outlet cap 612 moves upward, the air outlet groove 613 on the movable air outlet cap 612 will move out of the interior of the shell 610, and then the air can be discharged through the air outlet groove 613. When no air enters the interior of the shell 610, the movable air outlet cap 612 will move downward under the action of gravity, forcing the air outlet groove 613 to move into the interior of the shell 610. Therefore, the shell 610 can be used to block the air outlet groove 613 to prevent the air with impurities from entering the interior of the fault warning locator 3, thereby ensuring the cleanliness of the interior of the fault warning locator 3, and preventing external impurities from entering the interior of the fault warning locator 3 while dissipating heat;

[0041] When the device is used, the box cover 2 is rotated to open, and the movable support rod 1 701 and the movable support rod 2 706 in the folded state will be straightened, forcing the extension rod 702 to move into the interior of the adaptive slot 707, and because the outer side of the clamping head 705 is a curved surface, the movable support rod 2 706 is located at the fixed sleeve 708. The groove will squeeze the clamping head 705 into the extension rod 702, so that the clamping head 705 drives the limiting plate 704 to move into the extension rod 702, so that the extension rod 702 can be smoothly rotated into the interior of the adaptive slot 707, and when the clamping head 705 moves to the clamping hole 712, the limit plate 704 is driven to move in the direction of the fixed sleeve 708 under the action of the return spring 703, so that the clamping head 705 can be driven to move into the interior of the clamping hole 712, completing the clamping of the clamping hole 712 and the clamping head 705. Therefore, the movable support rod 1 701 and the movable support rod 2 706 are forced not to fold, and then the straightened state of the movable support rod 1 701 and the movable support rod 2 706 can be used to support the box cover 2, so as to prevent the box cover 2 from rotating and falling and hitting the fault warning locator 3 when the box cover 2 is hit or shaken during use, thereby playing a protective role. After the use of the device is finished, the pressing handle 711 is pressed, and the pressing handle 711 will drive the push rod 710 to move in the direction of the adaptive slot 707, and then the clamping head 705 can be squeezed and forced to move toward the inside of the extension rod 702, thereby releasing the clamping head 705 from the clamping hole 712. At this time, the joint between the movable support rod 1 701 and the movable support rod 2 706 can be bent toward the direction of the box cover 2, and then the box cover 2 can be rotated and covered on the top of the box body 1, making it convenient to carry the device.

[0042] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A single-phase ground fault early warning device for a power distribution network, comprising a box (1), characterized in that: A box cover (2) is rotatably connected to one side of the top of the box body (1); a fault warning locator (3) is detachably connected to the inside of the box body (1); the fault warning locator (3) is used for fault detection and warning and fault location positioning; fitting grooves (4) are provided on both sides of the fault warning locator (3); the fitting grooves (4) are used to provide an installation position; a protection mechanism (5) is provided on the outside of the box body (1); the protection mechanism (5) is used to protect a single-phase grounding fault warning device of a power distribution network; a temperature control mechanism (6) is provided on the outside of the fault warning locator (3); the temperature control mechanism (6) is used for dust-free heat dissipation; two supporting mechanisms (7) are rotatably connected to the inside of the matching groove (4); the supporting mechanism (7) is used to support the box cover (2); and a display screen (8) is fixedly connected to the inside of the box cover (2).

2. A single-phase grounding fault early warning device for a power distribution network according to claim 1, characterized in that: The protection mechanism (5) comprises a micro air pump (501), the bottom of the micro air pump (501) is fixedly connected to the bottom end of the box (1), the output end of the micro air pump (501) is fixedly connected to a connecting pipe (502), the end of the connecting pipe (502) away from the micro air pump (501) is threadedly connected to a mounting tube (503), the interior of the mounting tube (503) is fixedly connected to a pressure spring (504), the end of the pressure spring (504) close to the micro air pump (501) is fixedly connected to an air baffle (505), a plurality of air holes (506) are provided inside the outer edge of the air baffle (505), the top of the mounting tube (503) is fixedly connected to an air release cylinder (507), the bottom end of the air release cylinder (507) is fixedly connected to a lifting spring (508), The top of the lifting spring (508) is fixedly connected to a driving degassing plate (509), and a plurality of degassing holes (510) are provided inside the outer edge of the driving degassing plate (509). The top of the driving degassing plate (509) is fixedly connected to a degassing hollow column (511), and a plurality of exhaust holes (512) are provided at the bottom of the outer wall of the degassing hollow column (511), and a plurality of exhaust holes (513) are provided at the top of the outer wall of the degassing hollow column (511). An inflation tube (515) is threadedly connected to one end of the mounting tube (503) away from the micro air pump (501), and a protective air bag (516) is fixedly connected to the outside of the box body (1) and the box cover (2), and one end of the inflation tube (515) away from the mounting tube (503) is fixedly connected to a side of the protective air bag (516) close to the box body (1).

3. A single-phase grounding fault early warning device for a power distribution network according to claim 1, characterized in that: The temperature control mechanism (6) comprises a spliced ​​elbow (601), one end of the spliced ​​elbow (601) is fixedly connected to the outside of the connecting pipe (502), the other end of the spliced ​​elbow (601) is threadedly connected to a filter box (605), the interior of the spliced ​​elbow (601) is fixedly connected to a pressure spring (602), one end of the pressure spring (602) close to the connecting pipe (502) is fixedly connected to a limiting air plug (603), a plurality of air inlet holes (604) are provided inside the outer periphery of the limiting air plug (603), a plurality of filter plates (606) are fixedly connected to the interior of the filter box (605), and one end of the filter box (605) away from the spliced ​​elbow (601) is threadedly connected to a pressure spring (602). A connecting ventilation elbow (607) is connected, and both sides of the fault warning locator (3) are fixedly connected with air outlet heat dissipation plates (608), and a plurality of connecting air pipes (609) are fixedly connected between the two air outlet heat dissipation plates (608). One end of the connecting ventilation elbow (607) away from the filter box (605) is fixedly connected to the outside of one of the air outlet heat dissipation plates (608), and the interior of the fault warning locator (3) is fixedly connected with a shell (610), and the interior of the shell (610) is slidably connected with a limit ring (611), and the top of the limit ring (611) is fixedly connected with a movable air outlet cap (612), and the outer wall of the movable air outlet cap (612) is provided with a plurality of air outlet grooves (613).

4. A single-phase grounding fault early warning device for a power distribution network according to claim 1, characterized in that: The supporting mechanism (7) comprises two movable support rods (701), the bottom of the movable support rod (701) is rotatably connected to the inside of the fitting groove (4), the top of the movable support rod (701) is fixedly connected to an extension rod (702), the inside of the extension rod (702) is fixedly connected to a return spring (703), the inside of the extension rod (702) is slidably connected to a limit plate (704), the side of the limit plate (704) away from the return spring (703) is fixedly connected to a clamp (705), the top of the clamp (705) is fixedly connected to the inside of the extension rod (702). A movable support rod 2 (706) is rotatably connected, and an adaptable card slot (707) is provided at the bottom of the movable support rod 2 (706). A fixed sleeve (708) is fixedly connected to the outer side of the movable support rod 2 (706). A limiting ring (709) is slidably connected to the inside of the fixed sleeve (708). A support rod (710) is fixedly connected to the middle of the limiting ring (709). A card hole (712) is provided on the inner side of the movable support rod 2 (706) at one side of the support rod (710), and the clamping head (705) is engaged with the card hole (712).

5. A single-phase grounding fault early warning device for a power distribution network according to claim 2, characterized in that: The air baffle plate (505) is slidably connected to the interior of the installation cylinder (503), and the driving air release plate (509) is slidably connected to the interior of the air release cylinder (507).

6. A single-phase grounding fault early warning device for a power distribution network according to claim 2, characterized in that: A round handle (514) is fixedly connected to the top of the deflated hollow column (511), and a protective sleeve is provided on the outside of the round handle (514).

7. A single-phase grounding fault early warning device for a power distribution network according to claim 3, characterized in that: The limiting air plug (603) is slidably connected to the inside of the spliced ​​elbow (601), and the air outlet groove (613) is located inside the outer shell (610).

8. A single-phase grounding fault early warning device for a power distribution network according to claim 3, characterized in that: The outside of the movable air outlet cap (612) is slidably connected to the top of the housing (610), and the opposite sides of the two air outlet heat dissipation plates (608) respectively penetrate the two sides of the fault warning locator (3).

9. A single-phase grounding fault early warning device for a power distribution network according to claim 4, characterized in that: One end of the push rod (710) away from the second movable support rod (706) is fixedly connected to a pressing handle (711), and the extension rod (702) is arranged inside the adaptable card slot (707).

10. A single-phase grounding fault early warning device for a power distribution network according to claim 4, characterized in that: The side of the return spring (703) close to the clamp (705) is fixedly connected to the side of the limit plate (704) away from the clamp (705), and the side of the clamp (705) away from the return spring (703) is a curved surface.

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