Armored medium-voltage switch cabinet

Abstract

The invention discloses an armored medium-voltage switch cabinet, and relates to the technical field of switch cabinets. Whether an operator exists nearby the switch cabinet or not is analyzed through the analysis module, whether the cabinet door is opened without operation or not is judged, and when no operator automatically closes nearby, dust entering the switch cabinet is effectively reduced, a good operation environment is provided for electronic components in the switch cabinet, the influence of dust on the performance of the switch cabinet is reduced, and the service life of the switch cabinet is prolonged. The normal operation of the switch cabinet can be ensured; the analysis module processes the elasticity data of the return spring, the quality data of the cabinet door and the displacement data, when the door closing speed is too high, a deceleration signal is generated in time, the number of needed rubber blocks is calculated, and the rubber blocks are controlled to stretch out and decelerate, so that damage caused by collision between the cabinet door and the cabinet body due to too high speed is effectively prevented; the operation safety and reliability of the switch cabinet are improved, the service life of the switch cabinet is prolonged, and the switch cabinet can stably operate under various conditions.

Description

Technical Field

[0001] The invention relates to the technical field of switch cabinets, and in particular to an armored medium-voltage switch cabinet. Background Art

[0002] At present, with the improvement of the quality of electricity used in urban industry and urban life, the power supply network mainly adopts the ring network power supply mode. In the ring network power supply mode, the power supply quality is stable and reliable, thus reducing the risk of large-scale power outages, thereby avoiding the huge economic losses caused by accidental power outages. Among them, armored medium-voltage switchgear is one of the main equipment used for power supply, and the safety of its operation process is particularly important.

[0003] The cabinet doors of existing armored medium-voltage switch cabinets are mostly opened and closed by using a hinged seat structure. However, the ordinary hinged seat is easily affected or touched by the outside world when it is kept open, causing the cabinet door to shake or collide with the cabinet body. The components inside the armored medium-voltage switch cabinet will be affected by the cabinet door and vibrate, thereby reducing the stability of component installation.

[0004] In the prior art, after the switch cabinet door is opened, if there is no operation for a long time, the electronic components in the cabinet are exposed to the air, which is greatly affected by dust and moisture, and may cause adverse effects on the normal operation of the switch cabinet; and when the cabinet door is closed by the spring pullback, the cabinet door is likely to collide with the cabinet body, causing damage to the switch cabinet;

[0005] Therefore, the present application designs an armored medium voltage switchgear to solve the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the shortcomings of the prior art and to propose an armored medium-voltage switch cabinet.

[0007] In order to achieve the above-mentioned object, the present invention adopts the following technical scheme: an armored medium-voltage switch cabinet, comprising a cabinet body, a plurality of chambers are provided on the cabinet body, a plurality of cabinet doors for opening and closing the chambers are provided at the side ends of the cabinet body, a sealing anti-collision component is provided on the cabinet body between the cabinet door and the chamber, a locking mechanism is installed between the plurality of chambers and the cabinet door, and a handle is provided on the outer side wall of the cabinet door;

[0008] A control box is arranged on the rear surface of the cabinet, and a control component is arranged inside the control box. The control component includes a collection module, an analysis module and a regulation module;

[0009] The acquisition module collects thermal imaging data within a set distance range of the cabinet, collects elastic data of the pull-back spring, collects mass data and displacement data of the cabinet door, and transmits the collected thermal imaging, elasticity, mass and displacement data to the analysis module;

[0010] The analysis module processes the thermal imaging data to determine whether there is an operator within the set range of the cabinet. If there is no operator, a door closing signal is generated and transmitted to the adjustment module. The elasticity, mass and displacement data are processed to determine the closing speed of the cabinet door under the action of the pull-back spring and whether a collision will occur. If it is determined that a collision will occur, a deceleration signal is generated, the deceleration signal is transmitted to the adjustment module, and the number of rubber blocks required for deceleration is analyzed.

[0011] The regulating module receives the door closing signal and controls the pull-back spring to perform the door closing operation; and receives the deceleration signal and controls the corresponding number of rubber blocks to perform the deceleration operation.

[0012] Preferably, the sealing and anti-collision component consists of an anti-collision fitting rubber pad and an abutting sealing pad plate. The anti-collision fitting rubber pad is protruding from the edge of the inner wall of the cabinet door. The abutting sealing pad plate is located between the anti-collision fitting rubber pads and forms a rectangular fully enclosed sealing structure with the anti-collision fitting rubber pads.

[0013] Preferably, a magnetic block is protruding from the middle side end of the anti-collision fitting rubber pad, and an abutment fitting sealing groove for extending into the anti-collision fitting rubber pad is opened on the cabinet.

[0014] Preferably, the locking mechanism consists of a fixed ring block fixedly installed in the chamber, a first movable ring block slidably sleeved in the fixed ring block, and a second movable ring block slidably sleeved in the first movable ring block, a first locking assembly is provided between the fixed ring block and the first movable ring block, and a second locking assembly is provided between the first movable ring block and the second movable ring block.

[0015] Preferably, the first locking assembly and the second locking assembly are both composed of a matching slot, a movable dial plate and a matching hemispherical block, the movable dial plate is respectively fixed to the side ends of the first movable ring block and the second movable ring block, the matching hemispherical block is installed on one side of the movable dial plate, a groove is provided inside the movable dial plate corresponding to the position of the matching hemispherical block, a connecting spring is installed on the bottom surface of the groove corresponding to the position of the matching hemispherical block, the connecting spring is connected to the battery pack arranged inside the movable dial plate, and the matching slot is provided on the fixed ring block and the first movable ring block.

[0016] Preferably, a return spring is fixedly provided in the second movable ring block, the other end of the return spring is fixedly connected to a connecting and fixing block, and the connecting and fixing block is fixedly installed in the fixing ring block.

[0017] Preferably, a plurality of evenly distributed convex grooves are provided on the inner upper surface of the fixing ring block, an anti-slip plate is installed inside the convex groove through an energized spring, a rubber block is installed at the middle position of the lower surface of the anti-slip plate, the rubber block is triangular in shape, and the inclined surface of the triangle faces the cabinet door position, and a battery pack 2 is arranged inside the cabinet at the position corresponding to the fixing ring block.

[0018] Preferably, the analysis module performs the following steps to determine the operator near the cabinet:

[0019] Step 1: Analyze the collected temperature data, sort the n temperature data collected at the same time in ascending order according to the size of the temperature data, and number them in order, select the temperature data Q1 and Q3 numbered n / 4 and 3n / 4, and calculate the difference. The absolute value of the difference is recorded as the interquartile range IQR, and the fluctuation range of the temperature data is determined to be [Q1-3IQR / 2, Q3+3IQR / 2]. The temperature data that is not within the fluctuation range is determined as an outlier. After filtering out the outlier, the mean of the remaining temperature data is calculated, and the calculated temperature mean is the temperature data at that moment;

[0020] Step 2: If the temperature data detected at the corresponding time point is not within the preset human body temperature range and there is no abnormal temperature change compared with the background temperature model, it is determined that there is no operator near the cabinet 1, a door closing signal is generated, and the door closing signal is transmitted to the adjustment module; otherwise, the shape of the infrared imaging is analyzed;

[0021] Step three: Extract the contour of the high-temperature area preliminarily judged as the human body in the thermal image. For the extracted contour, calculate the area data of the contour by calculating the number of pixels it surrounds, and calculate the perimeter data of the contour by calculating the sum of the distances between adjacent pixels on the contour. Then, calculate the shape descriptors such as aspect ratio, circularity and rectangularity based on the calculated parameter data, and compare the calculated shape descriptor value with the empirical value of the human body shape feature. If the ratio of the shape descriptor value to the shape descriptor value corresponding to the human body shape feature is greater than the preset comparison threshold, it is determined that there is an operator near the cabinet and the door closing operation is not performed; otherwise, a door closing signal is generated and transmitted to the adjustment module.

[0022] Preferably, the analysis module performs the following steps to determine the door closing speed:

[0023] Step 1: The elastic force F of the pull-back spring T = kx, k is the spring constant of the pull-back spring, x is the deformation of the spring, then the elastic potential energy of the pull-back spring is When the pull-back spring rebounds and drives the cabinet door to close, the cabinet door generates energy loss due to friction during the closing process. The energy loss caused by friction is ES , the remaining energy is converted into the kinetic energy of the cabinet door m is the quality data of the cabinet door, v is the speed data of the door closing; the calculated door closing data is compared with the preset speed threshold v max Compare, if v>v max , it is determined that the door closing speed is too fast, and the cabinet door and the cabinet body will collide and be damaged, a deceleration signal is generated, and the deceleration signal is transmitted to the adjustment module;

[0024] Step 2: The friction force between a single rubber block and the cabinet door after it is fully extended is f = μ*N, where μ is the friction coefficient between the rubber block and the cabinet door, and N is the positive pressure data of the rubber block on the cabinet door. The total friction data F generated by m rubber blocks on the cabinet door is M =m*f; when E P -E s =F M *x, determine that the friction provided by the rubber block can prevent the cabinet door from colliding with the cabinet body, calculate the required number of rubber blocks, and round up the data m.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. Through the sealing cooperation between the anti-collision fitting rubber pad and the abutting sealing pad, the cabinet door can be fully closed, the dustproof ability of the switch cabinet is improved, and the closed dustproof function can be realized. Then, through the locking cooperation between the first locking component and the second locking component, the cabinet door can be stabilized after being unfolded, the comfort of the switch cabinet maintenance and inspection is improved, and the switch cabinet door can be stabilized and anti-swaying function can be realized, and finally the problem that the cabinet door hingedly installed by the hinged seat is easy to shake is solved;

[0027] 2. The analysis module can analyze whether there are operators near the switch cabinet, determine whether the cabinet door is opened without operation, and automatically close when there are no operators nearby, effectively reducing the dust from entering the switch cabinet, providing a good operating environment for the electronic components in the switch cabinet, reducing the impact of dust on their performance, and helping to ensure the normal operation of the switch cabinet;

[0028] 3. Through the analysis module to process the elastic data of the pull-back spring, the quality data of the cabinet door and the displacement data, when the door is closed too fast, a deceleration signal is generated in time, the required number of rubber blocks is calculated and their extension and deceleration are controlled, which effectively prevents the cabinet door from being damaged by the collision with the cabinet body due to excessive speed, improves the safety and reliability of the switch cabinet operation, extends the service life of the switch cabinet, and ensures that the switch cabinet can operate stably under various conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0030] Figure 1 This is a schematic diagram of the overall first viewing angle proposed by the present invention;

[0031] Figure 2 It is a schematic diagram of the overall second viewing angle proposed by the present invention;

[0032] Figure 3 It is an enlarged three-dimensional structural schematic diagram of the locking mechanism proposed by the present invention;

[0033] Figure 4 This is a schematic diagram of the three-dimensional structure of the pull-back spring proposed by the present invention;

[0034] Figure 5 It is a system flow chart of the present invention.

[0035] Serial numbers in the figure: 1. cabinet body; 2. cabinet door; 3. handle; 4. anti-collision fitting rubber pad; 5. magnetic suction block; 6. abutting sealing pad; 7. abutting fitting sealing groove; 8. fixed ring block; 9. first movable ring block; 10. second movable ring block; 11. matching card slot; 12. movable dial plate; 13. matching hemispherical block; 14. pull-back spring; 15. connecting fixed block. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0037] Example: See Figure 1-5An armored medium-voltage switch cabinet in the present invention includes a cabinet body 1, a plurality of chambers are opened on the cabinet body 1, and a plurality of cabinet doors 2 for opening and closing the chambers are arranged at the side ends of the cabinet body 1, and sealing anti-collision components are arranged on the cabinet body 1 between the cabinet doors 2 and the chambers, and locking mechanisms are installed between the plurality of chambers and the cabinet doors 2, and handles 3 are arranged on the outer side walls of the cabinet doors 2. By setting the sealing anti-collision components, the noise generated by the collision can be reduced when the cabinet doors 2 are closed, and the vibration of the device can be reduced, so as to protect the components in the switch cabinet; the sealing anti-collision components are composed of an anti-collision fitting rubber pad 4 and an abutting sealing pad plate 6, the anti-collision fitting rubber pad 4 is convexly arranged on the edge of the inner wall of the cabinet door 2, and the abutting sealing pad plate 6 is located between the anti-collision fitting rubber pad 4, and forms a rectangular fully enclosed seal with the anti-collision fitting rubber pad 4. The structure can extend into the chamber of the cabinet body 1 when the cabinet door 2 is closed through the setting of the abutting sealing pad 6, thereby cooperating with the anti-collision fitting rubber pad 4 to form a fully enclosed sealing structure, thereby reducing the dust from entering the switch cabinet through the gap; a magnetic block 5 is convexly provided on the middle side end of the anti-collision fitting rubber pad 4, and an abutting fitting sealing groove 7 for extending into the anti-collision fitting rubber pad 4 is provided on the cabinet body 1. Through the setting of the magnetic block 5, the cabinet door 2 can be better closed and fixed; the locking mechanism consists of a fixed ring block 8 fixedly installed in the chamber, a first movable ring block 9 slidably sleeved in the fixed ring block 8, and a second movable ring block 10 slidably sleeved in the first movable ring block 9, a first locking assembly is provided between the fixed ring block 8 and the first movable ring block 9, and the first movable ring block 9 and the second movable ring block 10 are provided with a locking assembly. A second locking assembly is provided between 10. By setting the fixed ring block 8, the first movable ring block 9 and the second movable ring block 10, the position occupied by the locking mechanism can be reduced, and the unfolding angle of the cabinet door 2 can be kept large enough to facilitate comfortable detection, maintenance and installation; the first locking assembly and the second locking assembly are both composed of a matching card slot 11, a movable dial plate 12 and a matching hemispherical block 13. The movable dial plate 12 is respectively fixed to the side ends of the first movable ring block 9 and the second movable ring block 10, and the matching hemispherical block 13 is installed on one side of the movable dial plate 12. A groove is provided inside the movable dial plate 12 at a position corresponding to the matching hemispherical block 13, and a connecting spring is installed at a position corresponding to the matching hemispherical block 13 on the bottom surface of the groove. The connecting spring is connected to the battery pack arranged inside the movable dial plate 12 The first movable ring block 8 and the second movable ring block 10 are connected and the power is controlled by the control switch. The matching slot 11 is opened on the fixed ring block 8 and the first movable ring block 9. Through the setting of the matching slot 11 and the matching hemispherical block 13, the first movable ring block 9 and the second movable ring block 10 can be locked and fixed when they are extended to the longest, and the movable dial plate 12 is easy to bend and deform, so that the matching hemispherical block 13 can exit the locked state when the cabinet door 2 is pushed by an external force; the second movable ring block 10 is fixedly provided with a pull-back spring 14, and the other end of the pull-back spring 14 is fixedly connected to a connecting and fixing block 15, and the connecting and fixing block 15 is fixedly installed in the fixed ring block 8. Through the setting of the pull-back spring 14, when the first locking assembly and the second locking assembly exit the locked state, the cabinet door 2 can be driven to complete the door closing operation.

[0038] A plurality of evenly distributed convex grooves are provided on the inner upper surface of the fixing ring block 8, an anti-slip plate is installed inside the convex groove through an energized spring, a rubber block is installed at the middle position of the lower surface of the anti-slip plate, the rubber block is triangular in shape, and the inclined surface of the triangle faces the position of the cabinet door 2, and a battery pack 2 is arranged inside the cabinet body 1 at the position corresponding to the fixing ring block 8;

[0039] A control box is provided on the rear surface of the cabinet 1, and a control component is provided inside the control box. The control component includes a collection module, an analysis module and a regulation module;

[0040] The infrared imager is used to cover the operating area within a set distance range near the cabinet 1, and the infrared thermal imager is initialized and set to set the temperature measurement range of the infrared imager to 0-50 degrees Celsius. Then, the image resolution and frame rate of the thermal imager are adjusted. The resolution is adjusted to be able to clearly distinguish the shape of the human body, and the frame rate is set to 5-10 frames per second. While ensuring the detection effect, the data transmission volume and equipment power consumption are reduced; when the switch cabinet is unmanned, the infrared thermal imager is allowed to run for a set time period to collect the temperature distribution of the surrounding environment as a background temperature model. After the set time period, the background temperature is regularly recollected, or when the ambient temperature change is detected to exceed the preset temperature change threshold, the background temperature model is automatically updated to ensure the accuracy of the background temperature model;

[0041] Analyze the collected temperature data, sort the n temperature data collected at the same time in ascending order according to the size of the temperature data, and number them in order, select the temperature data Q1 and Q3 numbered n / 4 and 3n / 4, and calculate the difference. The absolute value of the difference is recorded as the interquartile range IQR, and the fluctuation range of the temperature data is determined to be [Q1-3IQR / 2, Q3+3IQR / 2]. The temperature data that is not within the fluctuation range is determined as an abnormal value. After filtering out the abnormal value, the mean of the remaining temperature data is calculated, and the calculated temperature mean is the temperature data at that moment;

[0042] If the temperature data detected at the corresponding time point is not within the preset human body temperature range and there is no abnormal temperature change compared with the background temperature model, it is determined that there is no operator near the cabinet 1, a door closing signal is generated, and the door closing signal is transmitted to the adjustment module; otherwise, the shape of the infrared imaging is analyzed; the contour of the high-temperature area preliminarily judged as the human body in the thermal image is extracted, and for the extracted contour, the area data of the contour is calculated by calculating the number of pixels surrounded by it, and the perimeter data of the contour is calculated by calculating the sum of the distances between adjacent pixels on the contour. Then, shape descriptors such as aspect ratio, circularity and rectangularity are calculated based on the calculated parameter data, and the calculated shape descriptor value is compared with the empirical value of the human body shape feature. If the ratio of the shape descriptor value to the shape descriptor value corresponding to the human body shape feature is greater than the preset comparison threshold, it is determined that there is an operator near the cabinet 1 and the door closing operation is not performed; otherwise, a door closing signal is generated and transmitted to the adjustment module.

[0043] Elastic force F of the pull-back spring 14 T = kx, k is the stiffness coefficient of the pull-back spring 14, x is the deformation of the spring, then the elastic potential energy of the pull-back spring 14 When the pull-back spring 14 rebounds and drives the cabinet door 2 to close, the cabinet door generates energy loss due to friction during the closing process. The energy loss generated by friction is E S , the remaining energy is converted into the kinetic energy of cabinet door 2 m is the quality data of the cabinet door 2, v is the speed data of the door closing; the calculated door closing data is compared with the preset speed threshold v max Compare, if v>v max , it is determined that the door closing speed is too fast, and the cabinet door 2 and the cabinet body 1 will collide and be damaged, a deceleration signal is generated, and the deceleration signal is transmitted to the adjustment module;

[0044] The friction force between a single rubber block and the cabinet door after it is fully extended is f = μ*N, where μ is the friction coefficient between the rubber block and the cabinet door 2, and N is the positive pressure data of the rubber block on the cabinet door 2. The total friction data F generated by m rubber blocks on the cabinet door 2 is M =m*f; when E P -E s =F M *x, it is determined that the friction force provided by the rubber block can prevent the cabinet door 2 from colliding with the cabinet body 1, and the required number of rubber blocks m is calculated, and the data m is rounded up.

[0045] Working principle: When the present invention is used, firstly, the cabinet door 2 is fully opened by the handle 3, so that the first locking assembly and the second locking assembly are in a locked state. In the locked state, the matching hemispherical block 13 will be pushed into the matching card groove 11, so as to keep the fixed ring block 8, the first movable ring block 9 and the second movable ring block 10 extended and fixed. By setting the fixed ring block 8, the first movable ring block 9 and the second movable ring block 10, the position occupied by the locking mechanism can be reduced, and the unfolding angle of the cabinet door 2 can be kept large enough to facilitate the comfortable detection, maintenance and installation. After completing the detection, maintenance or installation, the cabinet door 2 is pushed, so that the first locking assembly and the second locking assembly exit the locked state, and then the cabinet door 2 will automatically pull the cabinet door 2 to close the door;

[0046] During the closing process of the cabinet door 2, the analysis module calculates the number of rubber blocks required to slow down the closing speed, and transmits the quantity data to the adjustment module. The adjustment module controls the corresponding number of energized springs in the convex grooves to perform power-off operations, so that the corresponding number of rubber blocks pop out, and the cabinet door 2 is decelerated, thereby reducing the impact strength between the cabinet door 2 and the cabinet body 1; the setting of the magnetic suction block 5 can cooperate with the metal cabinet body 1 to suck the cabinet door 2, thereby completing the closing of the cabinet door 2, and the use of the device ends here.

[0047] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An armored medium-voltage switchgear, comprising a cabinet body (1), characterized in that: The cabinet body (1) is provided with a plurality of chambers, and the side ends of the cabinet body (1) are provided with a plurality of cabinet doors (2) for opening and closing the respective chambers, and the cabinet body (1) between the cabinet doors (2) and the chambers is provided with sealing and anti-collision components, and a locking mechanism is installed between the plurality of chambers and the cabinet doors (2), and the outer side walls of the cabinet doors (2) are provided with handles (3); A control box is arranged on the rear surface of the cabinet (1), and a control component is arranged inside the control box. The control component includes a collection module, an analysis module and a regulation module; A collection module collects thermal imaging data within a set distance range of the cabinet body (1), collects elasticity data of the pull-back spring (14), collects mass data and displacement data of the cabinet door (2), and transmits the collected thermal imaging, elasticity, mass and displacement data to the analysis module; The analysis module processes the thermal imaging data to determine whether there is an operator within the set range of the cabinet (1). If there is no operator, a door closing signal is generated and transmitted to the adjustment module; the elasticity, mass and displacement data are processed to determine the closing speed of the cabinet door (2) under the action of the return spring (14), and whether a collision will occur. If it is determined that a collision will occur, a deceleration signal is generated, the deceleration signal is transmitted to the adjustment module, and the number of rubber blocks required for deceleration is analyzed; The regulating module receives a door closing signal and controls the pull-back spring (14) to perform a door closing operation; and receives a deceleration signal and controls a corresponding number of rubber blocks to perform a deceleration operation.

2. The armored medium voltage switchgear according to claim 1, characterized in that: The sealing anti-collision component is composed of an anti-collision fitting rubber pad (4) and an abutting sealing pad plate (6); the anti-collision fitting rubber pad (4) is protruding from the edge of the inner wall of the cabinet door (2); the abutting sealing pad plate (6) is located between the anti-collision fitting rubber pads (4) and forms a rectangular fully enclosed sealing structure with the anti-collision fitting rubber pads (4).

3. The armored medium voltage switchgear according to claim 2, characterized in that: A magnetic block (5) is protruding from the middle side end of the anti-collision fitting rubber pad (4), and a contact fitting sealing groove (7) for extending into the anti-collision fitting rubber pad (4) is provided on the cabinet body (1).

4. The armored medium voltage switchgear according to claim 3, characterized in that: The locking mechanism comprises a fixed ring block (8) fixedly installed in the chamber, a first movable ring block (9) slidably sleeved in the fixed ring block (8), and a second movable ring block (10) slidably sleeved in the first movable ring block (9); a first locking component is provided between the fixed ring block (8) and the first movable ring block (9), and a second locking component is provided between the first movable ring block (9) and the second movable ring block (10).

5. The armored medium voltage switchgear according to claim 4, characterized in that: The first locking assembly and the second locking assembly are both composed of a matching slot (11), a movable dial plate (12) and a matching hemispherical block (13); the movable dial plate (12) is respectively fixed to the side ends of the first movable ring block (9) and the second movable ring block (10); the matching hemispherical block (13) is installed on one side of the movable dial plate (12); a groove is provided inside the movable dial plate (12) at a position corresponding to the matching hemispherical block (13); a connecting spring is installed on the bottom surface of the groove at a position corresponding to the matching hemispherical block (13); the connecting spring is connected to a battery pack arranged inside the movable dial plate (12); the matching slot (11) is provided on the fixed ring block (8) and the first movable ring block (9).

6. The armored medium voltage switchgear according to claim 5, characterized in that: A pull-back spring (14) is fixedly arranged in the second movable ring block (10), and the other end of the pull-back spring (14) is fixedly connected to a connecting and fixing block (15), and the connecting and fixing block (15) is fixedly installed in the fixed ring block (8).

7. The armored medium voltage switchgear according to claim 6, characterized in that: The upper surface of the interior of the fixing ring block (8) is provided with a plurality of evenly distributed convex grooves, an anti-slip plate is installed inside the convex groove via an energized spring, a rubber block is installed at the middle position of the lower surface of the anti-slip plate, the rubber block is triangular in shape, and the inclined surface of the triangle faces the position of the cabinet door (2), and a second battery pack is arranged inside the cabinet body (1) at a position corresponding to the fixing ring block (8).

8. The armored medium voltage switchgear according to claim 5, characterized in that: The analysis module determines the operator near the cabinet (1) in the following steps: Step 1: Analyze the collected temperature data, sort the n temperature data collected at the same time in ascending order according to the size of the temperature data, and number them in order, select the temperature data Q1 and Q3 numbered n / 4 and 3n / 4, and calculate the difference. The absolute value of the difference is recorded as the interquartile range IQR, and the fluctuation range of the temperature data is determined to be [Q1-3IQR / 2, Q3+3IQR / 2]. The temperature data that is not within the fluctuation range is determined as an outlier. After filtering out the outlier, the mean of the remaining temperature data is calculated, and the calculated temperature mean is the temperature data at that moment; Step 2: If the temperature data detected at the corresponding time point is not within the preset human body temperature range and there is no abnormal temperature change compared with the background temperature model, it is determined that there is no operator near the cabinet 1, a door closing signal is generated, and the door closing signal is transmitted to the adjustment module; Otherwise, the shape of the infrared imaging is analyzed; Step 3: Extract the contour of the high-temperature area preliminarily determined to be a human body in the thermal image. For the extracted contour, calculate the area data of the contour by calculating the number of pixels it encloses, and calculate the perimeter data of the contour by calculating the sum of the distances between adjacent pixels on the contour. Then, calculate shape descriptors such as aspect ratio, circularity and rectangularity based on the calculated parameter data, and compare the calculated shape descriptor value with the empirical value of the human body shape feature. If the ratio of the shape descriptor value to the shape descriptor value corresponding to the human body shape feature is greater than a preset comparison threshold, it is determined that there is an operator near the cabinet (1) and the door closing operation is not performed; otherwise, a door closing signal is generated and transmitted to the adjustment module.

9. The armored medium voltage switchgear according to claim 5, characterized in that: The analysis module determines the closing speed of the cabinet door (2) in the following steps: Step 1: Elastic force F of the return spring (14) T = kx, k is the stiffness coefficient of the pull-back spring (14), x is the deformation of the spring, then the elastic potential energy of the pull-back spring (14) is When the pull-back spring (14) rebounds and drives the cabinet door (2) to close, the cabinet door generates energy loss due to friction during the closing process. The energy loss generated by friction is E S , the remaining energy is converted into the kinetic energy of the cabinet door (2) m is the quality data of the cabinet door (2), v is the speed data of the door closing; the calculated door closing data is compared with the preset speed threshold v max Compare, if v>v max , it is determined that the door closing speed is too fast, and the cabinet door (2) and the cabinet body (1) will be damaged by collision, a deceleration signal is generated, and the deceleration signal is transmitted to the adjustment module; Step 2: The friction force between a single rubber block and the cabinet door after it is fully extended is f = μ*N, where μ is the friction coefficient between the rubber block and the cabinet door (2), and N is the positive pressure data of the rubber block on the cabinet door (2). Then the total friction force data F generated by m rubber blocks on the cabinet door (2) is M =m*f; when E P -E s =F M *x, it is determined that the friction force provided by the rubber block can prevent the cabinet door (2) and the cabinet body (1) from colliding, and the required number of rubber blocks m is calculated, and the data m is rounded up.

Images