Armoured medium voltage switchgear

Abstract

The application discloses an armored medium-voltage switch cabinet and relates to the technical field of switch cabinets, which comprises a cabinet body; the application analyzes whether there is an operator near the switch cabinet through an analysis module, determines whether the cabinet door is opened without operation, and automatically closes when there is no operator nearby, effectively reduces dust from entering the switch cabinet, provides a good operating environment for electronic components in the switch cabinet, reduces the influence of dust on the performance of the electronic components, helps to ensure the normal operation of the switch cabinet; through the processing of the elastic data of the back spring, the mass data of the cabinet door and the displacement data by the analysis module, a deceleration signal is generated in time when the door closing speed is too fast, the required number of rubber blocks is calculated and the extension of the rubber blocks is controlled to decelerate, damage of the cabinet door caused by the collision with the cabinet body due to the too fast speed is effectively prevented, the safety and reliability of the operation of the switch cabinet are improved, the service life of the switch cabinet is prolonged, and the stable operation of the switch cabinet under various conditions is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of switch cabinet, in particular to an armored medium voltage switch cabinet. BACKGROUND

[0002] At present, with the improvement of urban industrial and urban life power quality, the power supply network mainly adopts ring network power supply mode, and the power supply quality is stable and reliable under the ring network power supply mode, thereby reducing the risk of large area power failure, and avoiding huge economic losses caused by accident power failure. Among them, the armored medium voltage switch cabinet is one of the main equipment for power supply, and the safety of its operation process is particularly important.

[0003] The existing armored medium voltage switch cabinet door adopts a hinged seat structure to open and close the door, and the ordinary hinged seat is easy to be affected or touched in the open state, causing the door to shake or collide with the cabinet body, so that the internal components of the armored medium voltage switch cabinet are affected by the door and vibrate, thereby reducing the stability of the component installation.

[0004] In the prior art, after the switch cabinet door is opened, the electronic components in the cabinet are exposed to the air for a long time without operation, and are greatly affected by dust and moisture, which easily causes adverse effects on the normal operation of the switch cabinet. When the door is closed by the action of the spring, the door is easy to collide with the cabinet body, causing damage to the switch cabinet.

[0005] Therefore, the present application designs an armored medium voltage switch cabinet to solve the above problems. SUMMARY

[0006] The purpose of the present application is to solve the problems existing in the prior art, and to provide an armored medium voltage switch cabinet.

[0007] In order to achieve the above purpose, the present application adopts the following technical scheme: an armored medium voltage switch cabinet, comprising a cabinet body, a plurality of cavities are formed in the cabinet body, a plurality of cabinet doors for opening and closing the cavities are arranged at the side end of the cabinet body, a sealing and anti-collision assembly is arranged between the cabinet door and the cavity of the cabinet body, a locking mechanism is arranged between the cavity and the cabinet door, and a handle is arranged on the outer side wall of the cabinet door. The locking mechanism is composed of a fixed ring block fixedly installed in the cavity, a first movable ring block slidingly sleeved in the fixed ring block, and a second movable ring block slidingly sleeved in the first movable ring block, and a pull spring is fixedly arranged in the second movable ring block.

[0008] A plurality of uniformly distributed convex grooves are formed in the inner upper surface of the fixed ring block, a anti-dropping plate is installed in the convex groove through a power spring, and a rubber block is installed at the middle position of the lower surface of the anti-dropping plate

[0009] The rear surface of the cabinet body is provided with a control box, and the control box is internally provided with a control assembly, which comprises a collection module, an analysis module and an adjustment module.

[0010] The collection module collects thermal imaging data within the set distance range of the cabinet body, collects elastic data of the back-pulling spring, collects mass data and displacement data of the cabinet door, and transmits the collected thermal imaging, elastic, mass and displacement data to the analysis module.

[0011] The analysis module processes the thermal imaging data to determine whether there is an operator within the set range of the cabinet body, and if there is no operator, a door closing signal is generated and transmitted to the adjustment module; the elastic, mass and displacement data are processed to determine the closing speed of the cabinet door under the action of the back-pulling spring and whether impact will occur, and if impact will occur, a deceleration signal is generated and transmitted to the adjustment module, and the number of rubber blocks required for deceleration is analyzed.

[0012] The adjustment module receives the door closing signal to control the back-pulling spring to perform door closing operation; receives the deceleration signal to control the corresponding number of rubber blocks to perform deceleration operation.

[0013] Preferably, the sealing anti-collision assembly is composed of anti-collision rubber pads and abutting sealing pad plates, the anti-collision rubber pads are protruded on the edges of the inner wall of the cabinet door, and the abutting sealing pad plates are located between the anti-collision rubber pads and form a rectangular fully closed sealing structure with the anti-collision rubber pads.

[0014] Preferably, the middle side end of the anti-collision rubber pad is provided with a magnetic block, and the cabinet body is provided with an abutting and sealing groove for extending into the anti-collision rubber pad.

[0015] Preferably, a first locking assembly is arranged between the fixed ring block and the first movable ring block, and a second locking assembly is arranged between the first movable ring block and the second movable ring block.

[0016] Preferably, the first locking assembly and the second locking assembly are each composed of a matching clamping groove, a movable push plate and a matching hemispherical block, the movable push plate is fixedly connected to the side end of the first movable ring block and the second movable ring block, the matching hemispherical block is installed on one side of the movable push plate, a recess is formed in the inside of the movable push plate corresponding to the position of the matching hemispherical block, a connecting spring is installed on the bottom surface of the recess corresponding to the position of the matching hemispherical block, the connecting spring is connected with a battery pack arranged in the inside of the movable push plate, and the matching clamping groove is formed in the fixed ring block and the first movable ring block.

[0017] Preferably, the other end of the back-pulling spring is fixedly connected with a connecting fixed block, and the connecting fixed block is fixedly installed in the fixed ring block.

[0018] Preferably, the rubber block is triangular in shape, and the inclined surface of the triangle faces the position of the cabinet door, and the cabinet body is provided with a battery pack II corresponding to the position of the fixed ring block.

[0019] Preferably, the analysis module performs the following steps for determining the operator near the cabinet body:

[0020] Step one: analyze the collected temperature data, sort the n temperature data collected at the same time in order from small to large according to the size of the temperature data, and number them in order, select the temperature data Q1 and Q3 numbered as n / 4 and 3n / 4, and calculate the difference, the absolute value of the difference is the interquartile range IQR, then determine the fluctuation range of the temperature data as [Q1-3IQR / 2, Q3+3IQR / 2], the temperature data not in the fluctuation range is determined as an abnormal value, and the mean value of the remaining temperature data is calculated to obtain the temperature data at this time;

[0021] Step two: 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 body, a door closing signal is generated, and the door closing signal is transmitted to the adjustment module; otherwise, the shape of the thermal image is analyzed;

[0022] Step three: the high-temperature area preliminarily judged as a human body in the thermal image is subjected to contour extraction, the area data of the extracted contour is calculated by counting the number of pixel points surrounded by the contour, the perimeter data of the contour is calculated by calculating the sum of the distances between adjacent pixel points on the contour, and then the shape descriptors corresponding to the aspect ratio, circularity and rectangularity are calculated according to the calculated parameter data, and the shape descriptor values are compared with the empirical values of human body shape characteristics, if the ratio of the shape descriptor values to the shape descriptor values corresponding to the human body shape characteristics is greater than a preset comparison threshold, it is determined that there is an operator near the cabinet body, and no door closing operation is performed; otherwise, a door closing signal is generated, and the door closing signal is transmitted to the adjustment module.

[0023] Preferably, the analysis module performs the following steps for determining the closing speed of the cabinet door:

[0024] Step one: the elastic force of the return spring , is the stiffness coefficient of the return spring, is the deformation of the spring, and the elastic potential energy of the return spring is When the return spring rebounds to drive the cabinet door to close, the cabinet door generates energy loss due to friction during the closing process, and the energy loss generated by friction is , then the remaining energy is converted into kinetic energy of the cabinet door , the mass data of the cabinet door, the speed data of the closing door; the calculated closing door data is compared with a preset speed threshold , if , it is determined that the closing door speed is too fast, the cabinet door and the cabinet body will be damaged by collision, a deceleration signal is generated, and the deceleration signal is transmitted to the adjusting module;

[0025] Step two: the friction force between the single rubber block and the cabinet door after the single rubber block is fully stretched out is the friction coefficient between the rubber block and the cabinet door, is the normal pressure data of the rubber block on the cabinet door, then the total friction force data generated by the single rubber block on the cabinet door ; when , it is determined that the friction force provided by the rubber block can avoid the collision between the cabinet door and the cabinet body, the required rubber block quantity data is calculated, and the data is rounded up.

[0026] Compared with the prior art, the beneficial effects of the present application are:

[0027] By sealing cooperation of the anti-collision rubber pad and the abutting sealing pad plate, the cabinet door is fully closed, the dustproof ability of the switch cabinet is improved, and the closed dustproof function is realized. Then, by locking cooperation of the first locking assembly and the second locking assembly, the cabinet door is stabilized after being unfolded, the comfort of the switch cabinet maintenance detection is improved, and the stable anti-shaking function of the switch cabinet door is realized. Finally, the problem of easy shaking of the cabinet door hinged and installed by the hinge seat is solved.

[0028] By analyzing whether there is an operator near the switch cabinet through the analysis module, it is determined whether the cabinet door is opened without operation, and when there is no operator near the cabinet door is automatically closed, the dust entering the switch cabinet is effectively reduced, a good operating environment for the electronic components in the switch cabinet is provided, the influence of dust on the performance of the electronic components is reduced, and the normal operation of the switch cabinet is ensured.

[0029] By processing the elastic data of the pull-back spring, the mass data of the cabinet door and the displacement data through the analysis module, when the closing door speed is too fast, the deceleration signal is generated in time, the required rubber block quantity is calculated and controlled to stretch out and decelerate, the damage caused by the collision between the cabinet door and the cabinet body due to the too fast speed is effectively prevented, the safety and reliability of the switch cabinet operation are improved, the service life of the switch cabinet is prolonged, and the stable operation of the switch cabinet under various conditions is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0030] ​The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application. In the drawings:

[0031] Figure 1 The overall first perspective view of the present application is shown in the figure;

[0032] Figure 2 The overall second perspective view of the present application is shown in the figure;

[0033] Figure 3 The enlarged perspective structure of the locking mechanism of the present application is shown in the figure;

[0034] Figure 4 The perspective structure of the back-pulling spring of the present application is shown in the figure;

[0035] Figure 5 The system flow chart of the present application is shown in the figure.

[0036] In the figure, the serial numbers are as follows: 1, cabinet body; 2, cabinet door; 3, handle; 4, anti-collision rubber pad; 5, magnetic block; 6, abutting sealing pad plate; 7, abutting sealing groove; 8, fixed ring block; 9, first movable ring block; 10, second movable ring block; 11, matching slot; 12, movable push plate; 13, matching hemispherical block; 14, back-pulling spring; 15, connecting fixed block. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application.

[0038] Embodiment: refer to Figures 1-5The armored medium-voltage switch cabinet comprises a cabinet body 1, a plurality of cavities are formed in the cabinet body 1, a plurality of cabinet doors 2 for opening and closing the cavities are arranged at the side ends of the cabinet body 1, a sealing and anti-collision assembly is arranged between the cabinet doors 2 and the cabinet body 1, a locking mechanism is arranged between the cabinet doors 2 and the cavities, a handle 3 is arranged on the outer side wall of each cabinet door 2, the sealing and anti-collision assembly is composed of anti-collision rubber pads 4 and abutting sealing pad plates 6, the anti-collision rubber pads 4 are arranged on the edges of the inner walls of the cabinet doors 2, the abutting sealing pad plates 6 are arranged between the anti-collision rubber pads 4 and form a rectangular fully-closed sealing structure together with the anti-collision rubber pads 4, the abutting sealing pad plates 6 can extend into the cavities of the cabinet body 1 when the cabinet doors 2 are closed, thereby cooperating with the anti-collision rubber pads 4 to form a fully-closed sealing structure, so that dust is prevented from entering the switch cabinet through the gaps, magnetic blocks 5 are arranged on the middle side ends of the anti-collision rubber pads 4, abutting and sealing grooves 7 are formed in the cabinet body 1 for the magnetic blocks 5 to extend into the anti-collision rubber pads 4, the magnetic blocks 5 can better close and fix the cabinet doors 2, the locking mechanism is composed of fixed ring blocks 8 fixedly arranged in the cavities, first movable ring blocks 9 slidably sleeved in the fixed ring blocks 8 and second movable ring blocks 10 slidably sleeved in the first movable ring blocks 9, first locking assemblies are arranged between the fixed ring blocks 8 and the first movable ring blocks 9, second locking assemblies are arranged between the first movable ring blocks 9 and the second movable ring blocks 10, the fixed ring blocks 8, the first movable ring blocks 9 and the second movable ring blocks 10 can reduce the occupied position of the locking mechanism and keep the unfolding activity angle of the cabinet doors 2 large enough to facilitate comfortable detection, maintenance and installation, the first locking assemblies and the second locking assemblies are each composed of a matching slot 11, a movable push plate 12 and a matching hemispherical block 13, the movable push plates 12 are fixedly connected to the side ends of the first movable ring blocks 9 and the second movable ring blocks 10, the matching hemispherical blocks 13 are arranged on one side of the movable push plates 12, recesses are formed in the movable push plates 12 corresponding to the positions of the matching hemispherical blocks 13, connecting springs are arranged on the bottom surfaces of the recesses corresponding to the positions of the matching hemispherical blocks 13, the connecting springs are connected to battery groups arranged in the movable push plates 12 and are controlled to be turned on and off through control switches, the matching slots 11 are formed in the fixed ring blocks 8 and the first movable ring blocks 9, the matching slots 11 and the matching hemispherical blocks 13 can lock and fix the first movable ring blocks 9 and the second movable ring blocks 10 when they are extended to the longest, and the matching hemispherical blocks 13 can exit the locking state under the condition that the cabinet doors 2 are pushed by external force due to the bending deformation characteristics of the movable push plates 12.The second movable ring block 10 is fixed with a pull-back spring 14, and the other end of the pull-back spring 14 is fixedly connected with a connecting fixed block 15 which is fixedly installed in the fixed ring block 8. Through the arrangement of the pull-back spring 14, the cabinet door 2 can be driven to complete the closing operation when the first locking assembly and the second locking assembly exit the locking state.

[0039] The inner upper surface of the fixed ring block 8 is provided with a plurality of uniformly distributed convex grooves, and the inside of the convex grooves is provided with an anti-drop plate through a power spring. The lower surface of the anti-drop plate is provided with a rubber block at the middle position. The rubber block is triangular in shape, and the inclined surface of the triangle faces the position of the cabinet door 2. The inside of the cabinet body 1 is provided with a battery pack two corresponding to the position of the fixed ring block 8.

[0040] The rear surface of the cabinet body 1 is provided with a control box, and the inside of the control box is provided with a control assembly. The control assembly includes a collection module, an analysis module and an adjustment module.

[0041] The operation area within the set distance range near the cabinet body 1 is covered by the infrared imager, and the infrared thermal imager is initialized. The temperature measurement range of the infrared imager is set to 0-50 degrees Celsius. Then the image resolution and frame rate of the thermal imager are adjusted. The resolution is adjusted 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 amount and equipment power consumption are reduced. In the case of no operation of the switch cabinet, the infrared thermal imager runs for a set period of time, collects the temperature distribution of the surrounding environment as a background temperature model, and periodically re-collects the background temperature after the set period of time. Or when the detected environmental temperature change exceeds the preset temperature change threshold, the background temperature model is automatically updated to ensure the accuracy of the background temperature model.

[0042] The collected temperature data is analyzed. The n temperature data collected at the same time is sorted in order from small to large according to the size of the temperature data, and is numbered in order. The temperature data Q1 and Q3 numbered as n / 4 and 3n / 4 are selected, and the difference is calculated. The absolute value of the difference is recorded as the interquartile range IQR. The fluctuation range of the temperature data is determined as [Q1-3IQR / 2, Q3+3IQR / 2]. The temperature data not in the fluctuation range is determined as an abnormal value, and the abnormal value is screened out. The mean value of the remaining temperature data is calculated to obtain the temperature mean value as the temperature data at that time.

[0043] 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 are no operators near 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 image is analyzed; the high-temperature area initially judged to be a human body in the thermal image is extracted; for the extracted contour, the area data of the contour is calculated by calculating the number of pixels it surrounds, and the perimeter data of the contour is calculated by calculating the sum of the distances between adjacent pixels on the contour; then, the aspect ratio, roundness, and rectangularity corresponding to the shape descriptor are calculated based on the calculated parameter data, and the calculated shape descriptor value is compared with the empirical value of human body shape features; if the ratio of the shape descriptor value to the shape descriptor value corresponding to human body shape features is greater than the preset comparison threshold, it is determined that there are operators near cabinet 1, and the door-closing operation is not performed; otherwise, a door-closing signal is generated and transmitted to the adjustment module.

[0044] The elastic force of pull spring 14 , The spring constant of the pullback spring 14 is... Let be the deformation of the spring, then the elastic potential energy of the pull-back spring 14 is... When the return spring 14 rebounds and drives the cabinet door 2 to close, energy loss occurs due to friction during the closing process. The energy loss caused by friction is... The remaining energy is then converted into the kinetic energy of cabinet door 2. , For the quality data of cabinet door 2, The closing speed data is used to calculate the closing speed; the calculated closing speed data is then compared with a preset speed threshold. If a comparison is made, If the closing speed is too fast, the cabinet door 2 and the cabinet body 1 will collide and be damaged. A deceleration signal is generated and transmitted to the adjustment module.

[0045] The friction between a single rubber block and the cabinet door when fully extended , The coefficient of friction between the rubber block and cabinet door 2. The data represents the positive pressure exerted by the rubber block on cabinet door 2. Data on the total frictional force generated by the rubber block against cabinet door 2 ;when When determining that the friction provided by the rubber blocks is sufficient to prevent cabinet door 2 from colliding with cabinet body 1, the required number of rubber blocks is calculated. ,data Round up.

[0046] Working principle: when the present application is used, first open the cabinet door 2 completely by the handle 3, so that the first locking assembly and the second locking assembly are in the locking state, the matching hemispherical block 13 will be pushed into the matching card slot 11 in the locking state, so as to keep the fixed ring block 8, the first movable ring block 9 and the second movable ring block 10 stretched fixed, through the setting of 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 activity angle of the cabinet door 2 is large enough to facilitate the comfortable detection, maintenance and installation, after the detection, maintenance or installation are completed, push the cabinet door 2, so that the first locking assembly and the second locking assembly exit the locking state, then the cabinet door 2 will automatically pull the cabinet door 2 to close the door operation;

[0047] 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 number data to the adjusting module. The adjusting module controls the energized spring in the corresponding number of convex grooves to be de-energized, so that the corresponding number of rubber blocks are ejected, and the cabinet door 2 is slowed down to reduce the impact strength of the cabinet door 2 and the cabinet 1. The setting of the magnetic attraction block 5 can cooperate with the metal cabinet 1 to attract the cabinet door 2, so as to complete the closing of the cabinet door 2, and the use of the device ends.

[0048] The above is only the preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacement or change according to the technical solution and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. An armored medium voltage switchgear cabinet comprising a cabinet body (1), characterized in that: The cabinet body (1) is provided with a plurality of chambers, and the side end of the cabinet body (1) is provided with a plurality of cabinet doors (2) for opening and closing the chambers; the cabinet body (1) between the cabinet doors (2) and the chambers is provided with a sealing and anti-collision assembly; a plurality of locking mechanisms are installed between the chambers and the cabinet doors (2); and the outer side wall of the cabinet door (2) is provided with a handle (3). The locking mechanism is composed 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); and a pull-back spring (14) is fixedly arranged in the second movable ring block (10). The inner upper surface of the fixed ring block (8) is provided with a plurality of uniformly distributed convex grooves, and the convex grooves are provided with anti-dropping plates through electric springs; and the lower surface of the anti-dropping plate is provided with a rubber block at the middle position. The rear surface of the cabinet body (1) is provided with a control box, and the control box is provided with a control assembly; the control assembly includes a collection module, an analysis module and an adjustment module. The collection module collects thermal imaging data within a set distance range of the cabinet body (1), collects elastic data of the pull-back spring (14), collects mass data and displacement data of the cabinet door (2), and transmits the collected thermal imaging, elastic, 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 body (1); if there is no operator, a door closing signal is generated and transmitted to the adjustment module; the elastic, mass and displacement data are processed to determine the closing speed of the cabinet door (2) under the action of the pull-back spring (14) and whether impact will occur; if impact will occur, a deceleration signal is generated and transmitted to the adjustment module, and the number of rubber blocks required for deceleration is analyzed.

2. An armored medium voltage switchgear cabinet according to claim 1, characterized in that: The adjustment module receives the door closing signal and controls the pull-back spring (14) to perform door closing operation; and receives the deceleration signal and controls the corresponding number of rubber blocks to perform deceleration operation.

3. An armored medium voltage switchgear cabinet according to claim 2, characterized in that: The sealing and anti-collision assembly is composed of anti-collision rubber pads (4) and abutting sealing pad plates (6); the anti-collision rubber pads (4) are protruded at the edges of the inner walls of the cabinet doors (2); and the abutting sealing pad plates (6) are located between the anti-collision rubber pads (4) and form a rectangular fully closed sealing structure with the anti-collision rubber pads (4).

4. An armored medium voltage switchgear cabinet according to claim 3, characterized in that: The middle side end of the anti-collision rubber pad (4) is provided with a magnetic block (5), and the cabinet body (1) is provided with an abutting and sealing groove (7) for extending into the anti-collision rubber pad (4). The first locking assembly is arranged between the fixed ring block (8) and the first movable ring block (9), and the second locking assembly is arranged between the first movable ring block (9) and the second movable ring block (10).

5. An armored medium voltage switchgear cabinet according to claim 4, characterized in that: The first locking assembly and the second locking assembly are composed of a matching clamping groove (11), a movable push plate (12) and a matching hemispherical block (13), the movable push plate (12) is fixedly connected to the side end of the first movable ring block (9) and the second movable ring block (10) respectively, the matching hemispherical block (13) is installed on one side of the movable push plate (12), a recess is formed in the inside of the movable push plate (12) corresponding to the position of the matching hemispherical block (13), a connecting spring is installed on the bottom surface of the recess corresponding to the position of the matching hemispherical block (13), the connecting spring is connected with a battery set arranged in the inside of the movable push plate (12), and the matching clamping groove (11) is formed in the fixed ring block (8) and the first movable ring block (9).

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

7. An armored medium voltage switchgear cabinet according to claim 6, characterized in that: The rubber block is triangular, and the inclined surface of the triangle faces the position of the cabinet door (2), and the cabinet body (1) is provided with a battery set two corresponding to the position of the fixed ring block (8) in the inside.

8. An armored medium voltage switchgear cabinet according to claim 5, characterized in that: The analysis steps of the analysis module for determining whether there is an operator in the set range of the cabinet body (1) are as follows: Step one: analyze the collected temperature data, sort the n temperature data collected at the same time according to the size of the temperature data from small to large, and number according to the order, select the temperature data Q1 and Q3 numbered as n / 4 and 3n / 4, and calculate the difference value, and the absolute value of the difference value is four quartile range IQR, then determine the fluctuation range of the temperature data as [Q1-3IQR / 2, Q3+3IQR / 2], and determine the temperature data not in the fluctuation range as an abnormal value, and calculate the mean value of the remaining temperature data after screening out the abnormal value, and take the calculated temperature mean value as the temperature data at this moment; Step two: if the temperature data detected at the corresponding time point is not in 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 body (1), a door closing signal is generated, and the door closing signal is transmitted to the adjusting module; Otherwise, the shape of the thermal image is analyzed; Step three: the high-temperature area preliminarily judged as a human body in the thermal image is profiled, the area data of the profile is calculated by counting the number of pixel points surrounded by the profile, the perimeter data of the profile is calculated by calculating the sum of the distances between adjacent pixel points on the profile, then the aspect ratio, circularity and rectangularity corresponding shape descriptors are calculated according to the calculated parameter data, and the calculated shape descriptor values are compared with the empirical values of human body shape characteristics, if the ratio of the shape descriptor values to the shape descriptor values corresponding to the human body shape characteristics is greater than a preset comparison threshold, it is determined that there is an operator near the cabinet body (1), and no door closing operation is performed; otherwise, a door closing signal is generated, and the door closing signal is transmitted to the adjusting module.

9. An armored medium voltage switchgear cabinet according to claim 5, characterized in that: The analysis steps of the analysis module for determining the closing speed of the cabinet door (2) under the action of the pull-back spring (14) are as follows: Step one: the elastic force of the pull-back spring (14) , is the stiffness coefficient of the pull-back spring (14), 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 to drive the cabinet door (2) to close, the cabinet door generates energy loss due to friction during the closing process, and the energy loss generated by friction is Then the remaining energy is all converted into kinetic energy of the cabinet door (2) , is the mass data of the cabinet door (2), is the closing speed data; compare the calculated closing data with the preset speed threshold If , it is determined that the closing speed is too fast, and the cabinet door (2) and the cabinet body (1) will be damaged by impact, a deceleration signal is generated, and the deceleration signal is transmitted to the adjusting module; Step two: the friction force between the fully extended single rubber block and the cabinet door , is the friction coefficient between the rubber block and the cabinet door (2), is the normal pressure data of the rubber block on the cabinet door (2), then is the total friction force data generated by the rubber block on the cabinet door (2) ; when , it is determined that the friction force provided by the rubber block can avoid the collision between the cabinet door (2) and the cabinet body (1), and the required rubber block quantity data is calculated, and the data is rounded up.

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