Well lid device for environmental monitoring of electric power overhaul well and control method

Abstract

The invention discloses a well lid device for electric power overhaul well environment monitoring and a control method. The device comprises a well lid base and a well lid. A ventilation groove is formed in the well lid, and a driving assembly, an opening and closing assembly and a locking assembly are arranged on the bottom face of the well lid in a matched mode. The opening and closing assembly corresponds to the ventilation slot and is used for opening or closing the ventilation slot; an environment monitoring sensor is further arranged on the bottom face of the well lid. The number of the locking assemblies is at least two, and the number of the ventilation grooves, the number of the opening and closing assemblies and the number of the locking assemblies are the same. The driving assembly is used for controlling the opening and closing assembly to open or close the ventilation groove in a linkage mode when the driving assembly is connected with the locking assembly and controlling the locking assembly to achieve locking or unlocking of the well lid and the well lid base. The driving assembly is further used for forming a fan when being disconnected with the locking assembly so that air in the electric power overhaul well can flow in an accelerated mode. The device can improve the accuracy of in-well environment monitoring data.

Description

Technical Field

[0001] The present invention relates to the technical field of electric power inspection wells, and in particular to a manhole cover device and a control method for environmental monitoring of electric power inspection wells. Background Art

[0002] An electric power inspection shaft is a well-shaped building built for the inspection and maintenance of electric power facilities. It plays an important role in various areas such as cities, towns and rural areas. The electric power inspection shaft is a passage for maintenance personnel to conduct daily inspections and emergency repairs. The inspection shaft cover is an important facility used to cover the entrance and exit of the inspection shaft.

[0003] The patent application number 202223166358.0 discloses a locking device for a manhole cover of an electric power well, including a mother cover, which is arranged at the wellhead and below the manhole cover; a locking rod, which is movably arranged below the mother cover, and the maximum movable range of the locking rod is greater than the diameter of the wellhead; a gas monitor, which is arranged in the well; the mother cover is arranged to separate the inside of the well from the outside to prevent the leakage of harmful gases or liquids in the well; the locking rod and the gas monitor are arranged to monitor the gas composition in the well in real time, and the locking rod can only be opened when the gas is pure. In this method, a gas monitor is arranged to monitor the gas in the well, but the well is in a long-term closed environment, and the temperature, humidity and oxygen content of the gas at different heights will also be different, resulting in the environmental data monitored by the gas monitor being unable to accurately and truly reflect the well environment. Summary of the invention

[0004] The present invention provides a manhole cover device and a control method for monitoring the environment of an electric power inspection well, which can improve the accuracy of monitoring environmental data in the electric power inspection well.

[0005] A manhole cover device for environmental monitoring of an electric power inspection well, comprising a manhole cover seat and a manhole cover; a ventilation slot is arranged on the manhole cover, and a driving component, an opening and closing component and a locking component that cooperate with each other are arranged on the bottom surface of the manhole cover; the opening and closing component is arranged corresponding to the ventilation slot and is used to open or close the ventilation slot; an environmental monitoring sensor is also arranged on the bottom surface of the manhole cover;

[0006] The driving component is used to control the opening and closing component to open or close the ventilation slot when connected to the locking component, and to control the locking component to lock or unlock the manhole cover and the manhole cover seat; the driving component is also used to form a fan when disconnected from the locking component to accelerate the flow of air in the power inspection shaft.

[0007] Furthermore, the number of the locking components is at least two groups, and the number of the ventilation slots, the opening and closing components and the locking components are the same.

[0008] Further, the driving assembly includes a mounting seat, a driving part, a rotating seat, a rotating plate and a connecting part; the number of the rotating plates is the same as the number of the locking assemblies;

[0009] The mounting seat is arranged at the geometric center of the bottom surface of the manhole cover, the driving part is installed on the mounting seat, the output end of the driving part is connected to the rotating seat, and the rotating seat is connected to the rotating plate in the circumferential direction;

[0010] The rotating plate is connected to the rotating seat via a rotating shaft, and a torsion spring is arranged on the rotating shaft;

[0011] The connecting portion is arranged in cooperation with the rotating plate and is used to connect or disconnect the locking assembly. When the locking assembly is disconnected, the driving portion drives the rotating seat to rotate and drives the rotating plate to rotate to form a fan.

[0012] Furthermore, the connecting part includes an annular electromagnet, a fixing seat, a connecting plate and a permanent magnet, and the number of the connecting plates is the same as the number of the rotating plates;

[0013] The annular electromagnet is fixedly connected to the manhole cover through a fixing seat, and the center of the annular electromagnet coincides with the geometric center of the bottom surface of the manhole cover. One end of the connecting plate is movably connected to one side of the rotating plate, and the other end of the connecting plate is connected or disconnected from the locking assembly. The permanent magnet is arranged on a side of the connecting plate facing the annular electromagnet. When the permanent magnet is attracted to the annular electromagnet, the other end of the connecting plate is disconnected from the locking assembly. When the permanent magnet is disconnected from the annular electromagnet, the other end of the connecting plate is connected to the locking assembly.

[0014] Furthermore, a pin rod is provided at one end of the connecting plate close to the locking assembly, and a locking hole is provided on the manhole cover seat;

[0015] The locking assembly includes a first support seat, a second support seat, a sliding rod and a locking pin, the first support seat and the second support seat are fixed to the bottom surface of the manhole cover, one end of the sliding rod is fixedly connected to one end of the locking pin, the other end of the locking pin passes through the first support seat and corresponds to the locking hole, the other end of the sliding rod passes through the second support seat, and the other end of the sliding rod is provided with a connecting hole adapted to the pin rod, when the permanent magnet is attracted to the annular electromagnet, the pin rod on the connecting plate is driven to disengage from the connecting hole, and when the permanent magnet is disconnected from the annular electromagnet, the pin rod on the connecting plate enters the connecting hole;

[0016] After the driving assembly is connected to the locking assembly, the locking pin is driven to enter the locking hole or escape from the locking hole through rotation, thereby achieving locking or unlocking of the manhole cover and the manhole cover seat.

[0017] Furthermore, the opening and closing assembly includes a first support, a second support, a first gear, a rack and a cylindrical seat; the cylindrical seat is arranged corresponding to the ventilation slot; the first support and the second support are fixedly connected to the bottom surface of the manhole cover, the rack is arranged on the sliding rod and is located between the first support seat and the second support seat, the cylindrical seat is provided with a through slot, the first gear is arranged at one end of the cylindrical seat and passes through the first support, and the first gear is meshed with the rack;

[0018] After the driving assembly is connected to the locking assembly, the sliding rod is controlled to move linearly through a rotation linkage. The first gear moves on the rack to drive the cylindrical seat to flip, so that the through groove is connected to the ventilation groove to open the ventilation groove, or the cylindrical surface of the cylindrical seat is fitted with the ventilation groove to close the ventilation groove.

[0019] Furthermore, the opening and closing assembly further comprises a second gear; the second gear is arranged at the other end of the cylindrical seat and passes through the second support;

[0020] The device further comprises an auxiliary unlocking assembly, and a guide groove is provided on one side of the ventilation groove;

[0021] The auxiliary unlocking assembly comprises a hollow seat and a tooth block, the hollow seat is connected to the tooth block, and the hollow seat is clearance-matched with the guide groove;

[0022] After the hollow seat enters the guide groove, the tooth block meshes with the second gear. During the downward movement of the hollow seat, the cylindrical seat is driven to rotate by the second gear, and the sliding rod is driven to move in a direction away from the lock hole through the transmission, so that the lock pin is disengaged from the lock hole.

[0023] Furthermore, an elastic member is provided between the hollow seat and the tooth block.

[0024] Furthermore, the auxiliary unlocking assembly also includes a sealing plate, which is movably connected to the guide groove and is used to close or open the guide groove.

[0025] A control method for power inspection well environment monitoring using the above device is characterized by comprising:

[0026] When the environment of the power inspection well is monitored, the driving component is controlled to connect with the locking component and the opening and closing component is controlled to close the ventilation slot;

[0027] Control the driving component to disconnect the locking component and drive the fan to rotate for a preset time;

[0028] The temperature, humidity or oxygen content in the power maintenance well is collected by the environmental monitoring sensor;

[0029] When the temperature exceeds a preset temperature threshold, the humidity is higher than a preset humidity threshold, or the oxygen content is lower than a preset oxygen content threshold, the driving component is controlled to connect with the locking component and the opening and closing component is controlled to open the ventilation slot;

[0030] The driving component is controlled to disconnect the locking component and drive the fan to rotate.

[0031] Further, the driving assembly includes a mounting seat, a driving part, a rotating seat, a rotating plate and a connecting part; the connecting part includes an annular electromagnet, a fixed seat, a connecting plate and a permanent magnet, a pin is provided at one end of the connecting plate close to the locking assembly, the manhole cover seat is provided with a lock hole, and the opening and closing assembly includes a first support, a second support, a first gear, a rack and a cylindrical seat;

[0032] Controlling the driving component to connect with the locking component and controlling the opening and closing component to close the ventilation slot in a linked manner includes:

[0033] The annular electromagnet is controlled to be powered off, so that the annular electromagnet is disconnected from the permanent magnet, the pin rod of the connecting plate enters the connecting hole, the driving assembly is connected to the locking assembly, the driving part is controlled to rotate, and the sliding rod is driven to move linearly. The rack is fitted with the first gear, and the cylindrical seat is driven to flip, so that the cylindrical surface of the cylindrical seat fits with the ventilation slot, and the ventilation slot is closed.

[0034] Further, controlling the driving component to disconnect the locking component and drive the fan to rotate for a preset time period includes:

[0035] The annular electromagnet is energized to engage with the permanent magnet, the pin of the connecting plate is disengaged from the connecting hole, the driving assembly is disconnected from the locking assembly, the rotating plate is twisted to form fan blades, and the driving unit drives the rotating plate to rotate for a preset time.

[0036] Further, controlling the driving component to connect with the locking component and linkage controlling the opening and closing component to open the ventilation slot comprises:

[0037] The annular electromagnet is controlled to be powered off, so that the annular electromagnet is disconnected from the permanent magnet, the pin rod of the connecting plate enters the connecting hole, the driving assembly is connected to the locking assembly, the driving part is controlled to rotate, and the sliding rod is driven to move linearly. The rack is fitted with the first gear, and the cylindrical seat is driven to flip, so that the through groove corresponds to the ventilation groove, and the ventilation groove is opened.

[0038] The manhole cover device and control method for power inspection well environmental monitoring provided by the present invention have at least the following beneficial effects:

[0039] (1) Through the cooperation of the locking component, the opening and closing component and the driving component, the power inspection well can be sealed, ventilated or the air flow in the well can be accelerated. Before environmental monitoring, the power inspection well can be sealed to accelerate the air flow in the well, so that the air under the well rises, thereby the environmental monitoring data collected during environmental monitoring is more accurate;

[0040] (2) When the driving component is connected to the locking component, it can control the opening and closing component to open or close the ventilation slot to meet the ventilation or sealing requirements in the well. At the same time, it can also control the locking component to lock or unlock the well cover and the well cover seat. When the driving component is disconnected from the locking component, a fan can be formed to accelerate the flow of air in the well when the ventilation slot is closed, and to ventilate the well when the ventilation slot is opened. The three work together to achieve the locking, unlocking, ventilation and sealing of the electric well cover, and the structural design is ingenious and the reliability is high.

[0041] (3) When the temperature and humidity in the well are too high, or the oxygen content is too low, the ventilation slot can be opened by linking the opening and closing components through the driving component, and the driving component forms a fan to dehumidify and dissipate heat in the power maintenance well, or increase its oxygen content to ensure the safety of personnel entering the well;

[0042] (4) When the driving part fails to work, the manhole cover and the manhole cover seat can be unlocked by the auxiliary unlocking component to ensure that the staff can enter the well normally;

[0043] (5) Compared with the existing manhole cover with a snap-on structure, the mechanical rotating telescopic locking technology provided by the present invention realizes the prefabricated installation and one-button locking function of the manhole cover, and the locking and unlocking of the manhole cover and the manhole cover seat are realized through the locking assembly, which improves the reliability of the connection between the manhole cover and the manhole cover seat, and also makes it difficult for the manhole cover to be opened easily, thereby improving the anti-theft performance of the manhole cover. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] Figure 1 A schematic structural diagram of an embodiment of a manhole cover device for environmental monitoring of an electric power inspection well provided by the present invention.

[0045] Figure 2 A schematic structural diagram of another embodiment of a manhole cover device for environmental monitoring of an electric power inspection well provided by the present invention.

[0046] Figure 3 A structural schematic diagram of an embodiment of a manhole cover seat in a manhole cover device for environmental monitoring of an electric power inspection well provided by the present invention.

[0047] Figure 4 A structural schematic diagram of an embodiment of the bottom of a manhole cover in a manhole cover device for environmental monitoring of an electric power inspection well provided by the present invention.

[0048] Figure 5 A schematic diagram of the structure of a manhole cover in a manhole cover device for environmental monitoring of an electric power inspection manhole provided by the present invention, when viewed from above.

[0049] Figure 6 A schematic structural diagram of an embodiment of a driving assembly, a locking assembly and an opening and closing assembly in a manhole cover device for environmental monitoring of an electric power inspection well provided by the present invention.

[0050] Figure 7 A structural schematic diagram of an embodiment of a square manhole cover bottom in a manhole cover device for environmental monitoring of an electric power inspection manhole provided by the present invention.

[0051] Figure 8 for Figure 1 Enlarged schematic diagram of part A.

[0052] Fig. 9 A flow chart of an embodiment of a control method for power maintenance well environmental monitoring provided by the present invention.

[0053] Reference numerals:

[0054] 1-manhole cover seat; 2-manhole cover; 201-ventilation slot; 3-locking assembly; 301a-first support seat; 301b-second support seat; 302-sliding rod; 303-locking pin; 304-locking hole; 305-connecting hole; 4-driving assembly; 401-mounting seat; 402-driving part; 403-rotating seat; 404-rotating plate; 405-torsion spring; 406-connecting plate; 407-pin rod; 408-fixed seat ;409-ring electromagnet;410-permanent magnet;5-opening and closing assembly;501a-first support;501b-second support;502-cylindrical seat;503-through groove;504a-first gear;504b-second gear;505-rack;6-fixed plate;601-temperature and humidity sensor;602-oxygen content detection sensor;7-guide groove;701-sealing plate;702-hollow seat;703-tooth block. DETAILED DESCRIPTION

[0055] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0056] refer to Figure 1In some embodiments, a manhole cover device for environmental monitoring of an electric power inspection well is provided, comprising a manhole cover seat 1 and a manhole cover 2; a ventilation slot 201 is provided on the manhole cover 2, and a driving component 4, an opening and closing component 5 and a locking component 3 are provided on the bottom surface of the manhole cover to cooperate with each other; the opening and closing component 5 is provided corresponding to the ventilation slot 201, and is used to open or close the ventilation slot 201; an environmental monitoring sensor is also provided on the bottom surface of the manhole cover 2; the number of the locking components 3 is at least two groups, and the number of the ventilation slots 201 and the opening and closing components 5 is the same as the number of the locking components 3;

[0057] The driving component 4 is used to control the opening and closing component 5 to open or close the ventilation slot 201 when connected to the locking component 3, and to control the locking component 3 to lock or unlock the manhole cover 2 and the manhole cover seat 1; the driving component 4 is also used to form a fan when disconnected from the locking component 3 to accelerate the flow of air in the power maintenance shaft.

[0058] Specifically, the manhole cover seat 1 is pre-buried at the wellhead of the power maintenance well. A mounting groove is provided at the center of the manhole cover seat 1 for mounting the manhole cover 2. The mounting groove and the manhole cover 2 are adapted to each other. A supporting ring is provided on the mounting groove to support the manhole cover 2. The shapes of the mounting groove and the manhole cover 2 can be set according to actual needs, such as Figure 1 As shown, the shape of the installation groove and the manhole cover 2 can be circular, and the shape of the installation groove and the manhole cover 2 can also be a quadrilateral, such as Figure 2 shown.

[0059] In some embodiments, Figure 2 As shown, the manhole cover 2 and the manhole cover seat 1 are both rectangular structures, and a plurality of the manhole covers 2 are matched with one manhole cover seat 1, and the manhole covers 2 are tightly laid inside the manhole cover seat 1 along the length direction of the manhole cover seat 1.

[0060] In some embodiments, the number of locking assemblies 3 is at least two groups. When the manhole cover 2 is round, the number of locking assemblies is preferably three groups to prevent the manhole cover 2 from being easily opened after one of the locking pins 303 is separated from the locking hole 304. When the manhole cover 2 is square, the number of locking assemblies 3 is preferably two groups. And the two groups of locking assemblies 3 are respectively arranged on both sides of the rectangular manhole cover 2 in the longitudinal direction of the manhole cover 2 facing away from each other.

[0061] The locking pin 303 is located inside the manhole cover, and the locking hole 304 is located inside the manhole cover seat. The unlocking is driven by a driving assembly to realize the prefabricated installation and one-button locking function of the manhole cover, which is difficult to open easily from the outside, thereby improving the anti-theft performance of the manhole cover.

[0062] In some embodiments, the environmental monitoring sensors include but are not limited to temperature sensors, humidity sensors, oxygen content detection sensors, water immersion sensors, etc.

[0063] In some embodiments, a connecting seat is provided on one side of the manhole cover 2, and the manhole cover 2 is movably connected to the manhole cover seat 1 through the connecting seat. Through the connecting seat, the manhole cover 2 can be flipped and be in a horizontal state, a vertical state or an inclined state with the manhole cover seat 1.

[0064] The driving component 4 can be connected or disconnected with the locking component 3. When connected with the locking component 3, the locking component 3 can be controlled to lock or unlock the manhole cover 2 and the manhole cover seat 1, and the opening and closing component 5 can be controlled to open or close the ventilation slot 201. When the driving component 4 is disconnected from the locking component 3, the driving component 4 itself can form a fan, which accelerates the air flow in the power maintenance shaft when rotating.

[0065] Further, refer to Figures 3 to 7 The driving assembly 4 includes a mounting seat 401, a driving portion 402, a rotating seat 403, a rotating plate 404 and a connecting portion; the number of the rotating plates 404 is the same as the number of the locking assembly 3;

[0066] The mounting seat 401 is arranged at the geometric center of the bottom surface of the manhole cover 2, the driving part 402 is installed on the mounting seat 401, the output end of the driving part 402 is connected to the rotating seat 403, and the rotating plate 404 is connected to the circumference of the rotating seat 403;

[0067] The connecting portion is arranged in cooperation with the rotating plate 404 to connect or disconnect the locking assembly 3. When the locking assembly 3 is disconnected, the driving portion 402 drives the rotating seat 403 to rotate, thereby driving the rotating plate 404 to rotate to form a fan.

[0068] Specifically, the mounting seat 401 may include two integrally formed mounting parts and a connecting bridge, the two mounting parts are fixed to the bottom surface of the manhole cover 2, the driving part 402 is mounted on the connecting bridge, the output end of the driving part 402 is connected to the rotating seat 403, and the rotating seat 403 is driven to rotate when rotating, and the rotating seat 403 is connected to the rotating plate 404 in the circumferential direction. In some embodiments, the rotating plate 404 is connected to the rotating seat 403 through a rotating shaft. In some embodiments, a torsion spring 405 is provided on the rotating shaft, and the two ends of the torsion spring 405 are respectively connected to the rotating seat 403 and the rotating plate 404. The provision of the torsion spring 405 enables the rotating plate 404 to be reset when rotating around the rotating shaft.

[0069] Specifically, the driving part 402 can be an electric rotating mechanism. When the power condition allows, it is set as an electric rotating mechanism, and preferably a servo motor. In addition, the driving part 402 can also be a manual rotating mechanism. When the power condition does not allow, it is set as a manual rotating mechanism, such as a shaft transmission mechanism, that is, the transmission shaft is fixedly connected to the rotating seat 403, the transmission shaft is rotatably connected to the mounting seat 401, and the top of the transmission shaft extends to the outside of the manhole cover 2. When the rotating seat 403 needs to be driven, the transmission shaft is manually rotated to drive the rotating seat 403 to rotate. Low-power electrical components such as environmental monitoring sensors can be powered by built-in battery modules, and the battery modules are detachable for easy replacement.

[0070] Furthermore, the connecting part includes an annular electromagnet 409, a fixing seat 408, a connecting plate 406 and a permanent magnet 410, and the number of the connecting plates 406 is the same as the number of the rotating plates 404;

[0071] The annular electromagnet 409 is fixedly connected to the manhole cover 2 through the fixing seat 408, and the center of the annular electromagnet 409 coincides with the geometric center of the bottom surface of the manhole cover 2. One end of the connecting plate 406 is movably connected to one side of the rotating plate 404, for example, it can be hinged. The other end of the connecting plate 406 is used to connect or disconnect with the locking component 3. The permanent magnet 410 is arranged on the side of the connecting plate 406 facing the annular electromagnet 409. When the permanent magnet 401 is attracted to the annular electromagnet 409, the other end of the connecting plate 406 is disconnected from the locking component 3. When the permanent magnet 410 is disconnected from the annular electromagnet 409, the other end of the connecting plate 406 is connected to the locking component 3.

[0072] Specifically, the fixing seat 408 may include two L-shaped fixing connectors, the ends of the long sides of the L-shaped fixing connectors are fixedly connected to the bottom surface of the manhole cover 2, and the ends of the short sides are connected to the annular electromagnet 409. In some embodiments, the short sides of the two L-shaped fixing connectors are on the diameter of the annular electromagnet 409.

[0073] Specifically, the annular electromagnet 409 generates magnetic force when powered on, and attracts the permanent magnet 410, driving the other end of the connecting plate 406 to disconnect from the locking assembly 3. Under the action of the suction force and the torsion spring, the rotating plate 406 is twisted at a certain angle to form fan blades, and the rotating plate 406 is driven to rotate by the driving unit. When the annular electromagnet 409 is powered off, it is disconnected from the permanent magnet 410, and the other end of the connecting plate 406 is connected to the locking assembly 3.

[0074] Furthermore, a pin rod 407 is provided at one end of the connecting plate 406 close to the locking assembly, and a locking hole 304 is provided at the manhole cover seat 1;

[0075] The locking assembly includes a first support seat 301a, a second support seat 301b, a sliding rod 302 and a locking pin 303. The first support seat 301a and the second support seat 301b are fixed to the bottom surface of the manhole cover 2. One end of the sliding rod 302 is connected to one end of the locking pin 303. The other end of the locking pin 303 passes through the first support seat 301a and corresponds to the locking hole 304. The other end of the sliding rod 302 passes through the second support seat 301b. The other end of the sliding rod 302 is provided with a connecting hole 305 adapted to the pin rod 407. When the permanent magnet 410 and the annular electromagnet 409 are attracted, the pin rod 407 on the connecting plate 406 is driven to disengage from the connecting hole 305. When the permanent magnet 410 and the annular electromagnet 409 are disconnected, the pin rod 407 on the connecting plate 406 is driven to enter the connecting hole 305. The diameter of the pin rod 407 is smaller than the diameter of the connecting hole 305.

[0076] When locked, a space margin is provided between the lock pin 303 and the lock hole 304;

[0077] After the driving assembly 4 is connected to the locking assembly 3 , the locking pin 303 is driven to enter the locking hole 304 or escape from the locking hole 304 through rotation, thereby realizing the locking or unlocking of the manhole cover 2 and the manhole cover seat 1 .

[0078] When the well entrance passage is a square structure, the manhole cover seat 1 is pre-buried at the square passage opening and a number of manhole covers 2 are closely laid on the manhole cover seat 1. At this time, the locking holes 304 are evenly spaced on the side of the manhole cover seat 1, and the locking holes 304 correspond to the positions of the locking pins 303 on each locking assembly 3. When the square well entrance passage needs to be fully opened, the locking assemblies 3 between the manhole cover 2 and the manhole cover seat 1 need to be unlocked one by one to open the manhole covers 2 one by one.

[0079] Specifically, the first support seat 301a is arranged at one end close to the locking hole 304, and the second support seat 301b is arranged at one end away from the locking hole 304. When locking, the driving part 402 is used to drive the rotating seat 403 to rotate, so that each rotating plate 404 drives the sliding rod 302 to move linearly through the connecting plate 406, so that the locking pin 303 cooperates with the locking hole 304 to realize the locking and positioning between the manhole cover 2 and the manhole cover seat 1, and at this time, the end of the locking pin 303 will not be completely extended into the locking hole 304, and there is still space margin in the locking hole 304.

[0080] Further, the opening and closing assembly includes a first support 501a, a second support 501b, a first gear 504a, a second gear 504b, a rack 505 and a cylindrical seat 502; the cylindrical seat 502 is arranged corresponding to the ventilation slot 201; the first support 501a and the second support 501b are fixedly connected to the bottom surface of the manhole cover 2, the rack 505 is arranged on the sliding rod 302 and is located between the first support seat 501a and the second support seat 501b, the cylindrical seat 502 is provided with a through groove 503, the first gear 504a and the second gear 504b are respectively arranged at both ends of the cylindrical seat 502 and pass through the first support 501a and the second support 501b respectively, and the first gear 504a is meshed with the rack 505;

[0081] After the driving assembly 4 is connected to the locking assembly 3 , the cylindrical seat 502 is rotated to flip, so that the through slot 503 is connected to the ventilation slot 201 to open the ventilation slot 201 , or the cylindrical surface of the cylindrical seat 502 is fitted with the ventilation slot 201 to close the ventilation slot 201 .

[0082] Specifically, the cylindrical seat 502 can be obtained by slotting a cylinder, and the edge of the ventilation slot 201 can be arc-shaped to fit with the cylindrical surface of the cylindrical seat 502 .

[0083] Specifically, when the power inspection shaft needs to be ventilated, the annular electromagnet 409 is controlled to be de-energized and disconnected from the permanent magnet 410, so that the pin rod 407 of the connecting plate 406 enters the connecting hole 305, so that the drive assembly 4 is connected to the locking assembly. At this time, the driving part 402 rotates, driving the sliding rod 302 to move in a straight line. Since there is still space margin in the locking hole 304, the locking pin 303 can still continue to move forward. When the sliding rod 302 moves in a straight line, the rack 505 thereon fits with the first gear 504a, driving the cylindrical seat 502 to flip, so that the through groove 503 corresponds to the ventilation groove 201. The annular electromagnet 409 is then energized to engage with the permanent magnet 410, causing the pin 407 of the connecting plate 406 to disengage from the connecting hole 305, thereby disconnecting the drive assembly 4 from the locking assembly. Under the action of the suction force and the torsion spring, the rotating plate 406 is twisted at a certain angle to form fan blades, which are then driven to rotate by the driving unit 402 to achieve ventilation of the power inspection shaft.

[0084] When the ventilation slot 201 needs to be closed, the annular electromagnet 409 is controlled to be de-energized and disconnected from the permanent magnet 410, so that the pin rod 407 of the connecting plate 406 enters the connecting hole 305, so that the drive assembly 4 is connected to the locking assembly. At this time, the driving part 402 rotates in the opposite direction, driving the sliding rod 302 to make a linear motion in the opposite direction. When the sliding rod 302 makes a linear motion, the rack 505 thereon engages with the first gear 504a, driving the cylindrical seat 502 to flip, so that the cylindrical surface of the cylindrical seat 502 fits with the ventilation slot 201, thereby realizing the closure of the power inspection shaft.

[0085] Further, in some embodiments, reference Figure 8 The device further includes an auxiliary unlocking component, and a guide groove 7 is provided on one side of the ventilation groove 201 , that is, the number of the guide grooves 7 is the same as the number of the ventilation grooves 201 .

[0086] The auxiliary unlocking assembly includes a sealing plate 701, a hollow seat 702 and a tooth block 703, the sealing plate 701 is movably connected to the guide groove 7, the hollow seat 702 is fitted with the tooth block 703, and the hollow seat 702 is clearance-matched with the guide groove 7;

[0087] After the hollow seat 702 enters the guide groove 7, the tooth block 703 engages with the second gear 504b. During the downward movement of the hollow seat 702, the cylindrical seat 502 is driven to rotate through the second gear 504b, and the sliding rod 302 is driven to move in the direction away from the lock hole 304 through transmission, so that the locking pin 303 is disengaged from the lock hole 304, thereby realizing the unlocking between the manhole cover 2 and the manhole cover seat 1.

[0088] Furthermore, in some embodiments, an elastic member is disposed between the hollow seat 702 and the tooth block 703 .

[0089] When the driving part 402 fails, the bottom of the hollow seat 702 slides into the guide groove 7. Under the cooperation of the inclined surface of the tooth block 703 and the top edge of the guide groove 7, as the hollow seat 702 slides downward, the tooth block 703 is squeezed and contracted into the inside of the hollow seat 702 in turn to ensure that the hollow seat 702 can normally extend into the guide groove 7. The elastic member is compressed. When the tooth block 703 completely passes through the guide groove 7 and enters the bottom of the manhole cover 2, it is reset under the action of the elastic member and meshes with the second gear 504b away from the end of the rack 505. At this time, the cylindrical seat 502 can be driven to rotate through the second gear 504b by sliding the hollow seat 702 downward, and the cylindrical seat 502 The rack 505 is driven to move by the first gear 504a at the other end, so that the sliding rod 302 drives the locking pin 303 to disengage from the locking hole 304 to achieve unlocking. At this time, there is an angle between the sliding rod 302 and the connecting plate 406, and then the hollow seat 702 is coordinated with the guide groove 7 at other positions to repeat the above-mentioned actions, so that the locking pin 303 and the locking hole 304 at each position can be disengaged, and finally the mechanical unlocking between the manhole cover 2 and the manhole cover seat 1 is achieved to ensure that the staff can enter the well normally. The tooth block 703 is connected to the inner wall of the hollow seat 702 through an elastic member to form a special opening tool, which effectively prevents non-staff from easily opening the manhole cover 2 and causing serious accidents.

[0090] In some embodiments, a fixing plate 6 is further provided in the diameter direction of the annular electromagnet 409, and the environment monitoring sensor is provided on the fixing plate 6. For example, the environment monitoring sensor includes a temperature and humidity sensor 601 and an oxygen content detection sensor 602, which are respectively attached to the fixing plate 6.

[0091] In some embodiments, the device also includes a controller and a wireless communication module. The controller is used to control the environmental monitoring sensor to collect environmental monitoring data in the power inspection shaft and control the drive component. The wireless communication module is used to send the environmental monitoring data to a remote location, or receive a remote control signal and send it to the controller to realize the control of the drive component.

[0092] refer to Fig. 9 In some embodiments, a control method for power maintenance well environment monitoring using the above device is provided, comprising:

[0093] S1. When performing environmental monitoring on the power inspection well, control the driving component to connect with the locking component and control the opening and closing component to close the ventilation slot;

[0094] S2, controlling the driving component to disconnect the locking component and drive the fan to rotate for a preset time;

[0095] S3, collecting humidity or oxygen content in the power maintenance well through the environmental monitoring sensor;

[0096] S4, when the temperature exceeds a preset temperature threshold, the humidity is higher than a preset humidity threshold, or the oxygen content is lower than a preset oxygen content threshold, control the driving component to connect with the locking component and control the opening and closing component to open the ventilation slot;

[0097] S5. Control the driving component to disconnect the locking component and drive the fan to rotate.

[0098] Specifically, in step S1, when conducting environmental monitoring in the power maintenance well, it is necessary to make it sealed. Therefore, it is necessary to lock the manhole cover 2 and the manhole cover seat 1, and control the drive component to connect the locking component and link the opening and closing component to close the ventilation slot, specifically: control the annular electromagnet 409 to be de-energized and disconnected from the permanent magnet 410, so that the pin 407 of the connecting plate 406 enters the connecting hole 305, so that the drive component 4 is connected to the locking component, control the drive part 402 to rotate, and drive the sliding rod 302 to make a linear motion. When the sliding rod 302 makes a linear motion, the rack 505 thereon fits with the first gear 504a, driving the cylindrical seat 502 to flip, so that the cylindrical surface of the cylindrical seat 502 fits with the ventilation slot 201, thereby closing the ventilation slot 201.

[0099] Furthermore, in step S2, after closing the ventilation slot 201, the control driving component disconnects the locking component and drives the fan to rotate for a preset time, so that the air in the lower part of the power maintenance shaft rises, avoiding the large deviation of the monitoring result caused by always monitoring the temperature and humidity at the wellhead of the power shaft, thereby improving the detection accuracy of temperature, humidity and oxygen content. The environmental monitoring data collected later is more accurate.

[0100] Specifically, controlling the driving component to disconnect the locking component and drive the fan to rotate for a preset time includes: controlling the annular electromagnet 409 to be energized and attracted to the permanent magnet 410, so that the pin 407 of the connecting plate 406 is disengaged from the connecting hole 305, so that the driving component 4 is disconnected from the locking component, and the rotating plate 406 is twisted at a certain angle under the action of suction and the torsion spring to form fan blades, and the rotating plate 406 is driven to rotate by the driving unit 402, so that the air in the lower part of the well rises, and the driving unit 402 stops rotating after the preset time is reached.

[0101] Furthermore, in step S3, after reaching a preset time, the temperature, humidity or oxygen content in the power maintenance shaft is collected by the environmental monitoring sensor. At this time, the air in the lower part of the shaft rises, and the collected temperature data is more accurate.

[0102] Further, in step S4, if the detected temperature exceeds the preset temperature threshold, the humidity is higher than the preset humidity threshold, or the oxygen content is lower than the preset oxygen content threshold, it is necessary to dehumidify and dissipate heat in the power inspection well or increase the oxygen content, control the drive component to connect the locking component and control the opening and closing component to open the ventilation slot, specifically including: controlling the annular electromagnet 409 to be powered off and disconnected from the permanent magnet 410, so that the pin 407 of the connecting plate 406 enters the connecting hole 305, so that the drive component 4 is connected to the locking component, and at this time the drive part 402 rotates, driving the sliding rod 302 to move in a straight line. Since there is still space margin in the lock hole 304, the locking pin 303 can still continue to move forward. When the sliding rod 302 moves in a straight line, the rack 505 thereon engages with the first gear 504a, driving the cylindrical seat 502 to flip, so that the through slot 503 corresponds to the ventilation slot 201, thereby realizing the opening of the ventilation slot 201.

[0103] Further, in step S5, after the ventilation slot 201 is opened, the driving component is controlled to disconnect the locking component and drive the fan to rotate, specifically including: controlling the annular electromagnet 409 to be energized and attracted to the permanent magnet 410, so that the pin 407 of the connecting plate 406 is disengaged from the connecting hole 305, so that the driving component 4 is disconnected from the locking component, and the rotating plate 406 is twisted at a certain angle under the action of suction and the torsion spring to form fan blades, and the rotating plate 406 is driven to rotate by the driving unit 402 to achieve moisture removal and heat dissipation of the power inspection well and increase the oxygen content.

[0104] In some embodiments, the controller can also control the magnitude of the current to control the magnetic attraction of the annular electromagnet 409 and thus control the degree of torsion of the rotating plate 404 to adjust the exhaust volume.

[0105] In some embodiments, before the staff goes down the well, when the oxygen content in the well is monitored by the oxygen content detection sensor and is less than the set threshold value, the driving unit 402 is rotated in the opposite direction, so that the fan-shaped rotating plate 404 generates an airflow toward the well, thereby allowing air to be introduced into the well, increasing the oxygen content in the well and ensuring the safety of the staff.

[0106] The manhole cover device and control method for power inspection well environment monitoring provided in the above embodiments have at least the following beneficial effects:

[0107] (1) Through the cooperation of the locking component, the opening and closing component and the driving component, the power inspection well can be sealed, ventilated or the air flow in the well can be accelerated. Before environmental monitoring, the power inspection well can be sealed to accelerate the air flow in the well, so that the air under the well rises, thereby the environmental monitoring data collected during environmental monitoring is more accurate;

[0108] (2) When the temperature and humidity in the well are too high, or the oxygen content is too low, the ventilation slot can be opened by linking the opening and closing components through the driving component, and the driving component forms a fan to remove moisture and heat from the power maintenance well, or increase its oxygen content to ensure the safety of personnel entering the well;

[0109] (3) When the driving part fails to work, the auxiliary unlocking component can be used to unlock the manhole cover and the manhole cover seat to ensure that the staff can enter the manhole normally;

[0110] (4) Compared with the existing manhole cover with a snap-on structure, the mechanical rotation and telescopic locking technology provided by the above embodiment realizes the prefabricated installation and one-button locking function of the manhole cover, and the locking and unlocking of the manhole cover and the manhole cover seat are realized through the locking assembly, which improves the reliability of the connection between the manhole cover and the manhole cover seat, and also makes it difficult for the manhole cover to be opened easily, thereby improving the anti-theft performance of the manhole cover.

[0111] Although preferred embodiments of the present invention have been described, additional changes and modifications may be made to these embodiments by those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A manhole cover device for environmental monitoring of power inspection wells, characterized in that: It comprises a manhole cover seat and a manhole cover; the manhole cover is provided with a ventilation slot, and the bottom surface of the manhole cover is provided with a driving component, an opening and closing component and a locking component that cooperate with each other; the opening and closing component is arranged corresponding to the ventilation slot and is used to open or close the ventilation slot; the bottom surface of the manhole cover is also provided with an environmental monitoring sensor; The driving component is used to control the opening and closing component to open or close the ventilation slot when connected to the locking component, and to control the locking component to lock or unlock the manhole cover and the manhole cover seat; the driving component is also used to form a fan when disconnected from the locking component to accelerate the flow of air in the power inspection shaft.

2. The device according to claim 1, characterized in that The number of the locking components is at least two groups, and the number of the ventilation slots, the opening and closing components and the locking components are the same.

3. The device according to claim 1, characterized in that The driving assembly includes a mounting seat, a driving part, a rotating seat, a rotating plate and a connecting part; the number of the rotating plates is the same as the number of the locking assemblies; The mounting seat is arranged at the geometric center of the bottom surface of the manhole cover, the driving part is installed on the mounting seat, the output end of the driving part is connected to the rotating seat, and the rotating seat is connected to the rotating plate in the circumferential direction; The rotating plate is connected to the rotating seat via a rotating shaft, and a torsion spring is arranged on the rotating shaft; The connecting portion is arranged in cooperation with the rotating plate and is used to connect or disconnect the locking assembly. When the locking assembly is disconnected, the driving portion drives the rotating seat to rotate and drives the rotating plate to rotate to form a fan.

4. The device according to claim 3, characterized in that The connecting part includes an annular electromagnet, a fixing seat, a connecting plate and a permanent magnet, and the number of the connecting plates is the same as the number of the rotating plates; The annular electromagnet is fixedly connected to the manhole cover through a fixing seat, and the center of the annular electromagnet coincides with the geometric center of the bottom surface of the manhole cover. One end of the connecting plate is movably connected to one side of the rotating plate, and the other end of the connecting plate is connected or disconnected from the locking assembly. The permanent magnet is arranged on a side of the connecting plate facing the annular electromagnet. When the permanent magnet is attracted to the annular electromagnet, the other end of the connecting plate is disconnected from the locking assembly. When the permanent magnet is disconnected from the annular electromagnet, the other end of the connecting plate is connected to the locking assembly.

5. The device according to claim 4, characterized in that The connecting plate is provided with a pin rod at one end close to the locking assembly, and the manhole cover seat is provided with a locking hole; The locking assembly includes a first support seat, a second support seat, a sliding rod and a locking pin, the first support seat and the second support seat are fixed to the bottom surface of the manhole cover, one end of the sliding rod is fixedly connected to one end of the locking pin, the other end of the locking pin passes through the first support seat and corresponds to the locking hole, the other end of the sliding rod passes through the second support seat, and the other end of the sliding rod is provided with a connecting hole adapted to the pin rod, when the permanent magnet is attracted to the annular electromagnet, the pin rod on the connecting plate is driven to disengage from the connecting hole, and when the permanent magnet is disconnected from the annular electromagnet, the pin rod on the connecting plate enters the connecting hole; After the driving assembly is connected to the locking assembly, the locking pin is driven to enter the locking hole or escape from the locking hole through rotation, thereby achieving locking or unlocking of the manhole cover and the manhole cover seat.

6. The device according to claim 5, characterized in that The opening and closing assembly includes a first support, a second support, a first gear, a rack and a cylindrical seat; the cylindrical seat is arranged corresponding to the ventilation slot; the first support and the second support are fixedly connected to the bottom surface of the manhole cover, the rack is arranged on the sliding rod and is located between the first support seat and the second support seat, the cylindrical seat is provided with a through slot, the first gear is arranged at one end of the cylindrical seat and passes through the first support, and the first gear is meshed with the rack; After the driving assembly is connected to the locking assembly, the sliding rod is controlled to move linearly through a rotation linkage. The first gear moves on the rack to drive the cylindrical seat to flip, so that the through groove is connected to the ventilation groove to open the ventilation groove, or the cylindrical surface of the cylindrical seat is fitted with the ventilation groove to close the ventilation groove.

7. The device according to claim 6, characterized in that The opening and closing assembly further includes a second gear; the second gear is disposed at the other end of the cylindrical seat and passes through the second support; The device further comprises an auxiliary unlocking assembly, and a guide groove is provided on one side of the ventilation groove; The auxiliary unlocking assembly comprises a hollow seat and a tooth block, the hollow seat is connected to the tooth block, and the hollow seat is clearance-matched with the guide groove; After the hollow seat enters the guide groove, the tooth block meshes with the second gear. During the downward movement of the hollow seat, the cylindrical seat is driven to rotate by the second gear, and the sliding rod is driven to move in a direction away from the lock hole through the transmission, so that the lock pin is disengaged from the lock hole.

8. The device according to claim 7, characterized in that An elastic member is arranged between the hollow seat and the tooth block.

9. The device according to claim 7, characterized in that The auxiliary unlocking assembly further comprises a sealing plate, which is movably connected to the guide groove and is used to close or open the guide groove.

10. A control method for power maintenance well environment monitoring using the device according to any one of claims 1 to 9, characterized in that: include: When the environment of the power inspection well is monitored, the driving component is controlled to connect with the locking component and the opening and closing component is controlled to close the ventilation slot; Control the driving component to disconnect the locking component and drive the fan to rotate for a preset time; The temperature, humidity or oxygen content in the power maintenance well is collected by the environmental monitoring sensor; When the temperature exceeds a preset temperature threshold, the humidity is higher than a preset humidity threshold, or the oxygen content is lower than a preset oxygen content threshold, the driving component is controlled to connect with the locking component and the opening and closing component is controlled to open the ventilation slot; The driving component is controlled to disconnect the locking component and drive the fan to rotate.

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