Microorganism sampling device with outer insulation surface

Abstract

The invention discloses a microorganism sampling device for an external insulation surface. The microorganism sampling device comprises a mounting seat, a sampler, an elastic buffer device and a telescopic assembly. The sampler is of a cylindrical structure and is installed on the installation base in a sliding mode in the axial direction, and a sawtooth structure is arranged on the sampler. The sawtooth structure comprises a plurality of sawtooth units, sawtooth gaps used for obtaining microorganisms on the outer insulation surface are formed between the adjacent sawtooth units, the elastic buffer device is arranged between the mounting base and the sampler, and the telescopic end of the telescopic assembly is rotationally connected with the mounting base so as to adjust the included angle between the sampler and the outer insulation surface. According to the sampling device, microorganisms on the outer insulation surface of the electrical equipment in the high-altitude high-voltage environment can be efficiently and safely obtained, and meanwhile the activity and integrity of a microorganism sample can be improved through the sawtooth structure on the sampling device.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of microbial extraction equipment, and particularly relates to a microbial sampling device for an external insulation surface. BACKGROUND

[0002] With the continuous progress of power equipment technology and the continuous expansion of power grid scale, the safety and reliability of the power system have become an important issue in the modern energy field. In power equipment, the external insulation surface not only bears the important functions of electrical isolation and mechanical support, but also is the part directly contacted with the external environment. However, the complex external environment, such as high temperature, high humidity, atmospheric pollution and microbial pollution, will have adverse effects on the performance of the external insulation surface, and even cause equipment operation failure, which seriously threatens the stability and safety of the power system.

[0003] In recent years, the problem of microbial pollution has gradually attracted the attention of the academic and industrial circles. Studies have shown that the external insulation surface of electrical equipment is easily invaded by microorganisms such as mold, algae and bacteria due to long-term exposure to the natural environment. After these microorganisms adhere to the insulation surface, they will form corrosive metabolites as the environmental conditions change, gradually eroding the insulation material, thereby reducing its surface resistance and mechanical strength. At the same time, the adhesion of microorganisms will also change the electric field distribution of the insulation surface, increase the local electric field strength, and accelerate the aging of the insulation material, eventually leading to problems such as discharge and breakdown of the equipment. Especially in high humidity and salt spray environment, the harm of microbial pollution is more significant, which directly threatens the service life and operation stability of the equipment.

[0004] In the related art, when the electrical equipment is in a special environment such as high altitude and high voltage, the traditional wiping method is used to obtain the microbial samples on the external insulation surface of the electrical equipment by using a sterile cotton swab. However, the collector needs to approach the electrical equipment and wipe on the external insulation surface. However, using a sterile cotton swab to obtain the microorganisms on the external insulation surface of the electrical equipment not only increases the risk of the collector, but also the sterile cotton swab can extract samples, but it is easy to damage the microbial cells. SUMMARY

[0005] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a microbial sampling device for an external insulation surface, which can more efficiently and safely obtain the microorganisms on the external insulation surface of electrical equipment in a high-altitude and high-voltage environment, and the sawtooth structure on the sampler can improve the activity and integrity of the microbial samples.

[0006] The application provides a microorganism sampling device for an outer insulation surface, which comprises a mounting base, a sampler, an elastic buffering device, a telescopic assembly and a ball joint assembly. The sampler is configured as a columnar structure and has a sampling outer peripheral surface, which is provided with a sawtooth structure comprising a plurality of sawtooth units, and a sawtooth gap between adjacent sawtooth units is formed for obtaining microorganisms on the outer insulation surface. The sampler is slidably mounted on the mounting base in an axial direction. The elastic buffering device is arranged between the mounting base and the sampler. The telescopic assembly and the ball joint assembly are connected to the mounting base through a telescopic end of the telescopic assembly, and are used for adjusting the position of the sawtooth structure relative to the outer insulation surface.

[0007] In some embodiments, a plurality of the sawtooth units are arranged in an array on the sampling outer peripheral surface.

[0008] In some embodiments, the sawtooth units are configured as a steel material structure integrally formed on the outer peripheral surface.

[0009] In some embodiments, the sampler has a connecting end surface, a sampling end surface and the sampling outer peripheral surface connected between the connecting end surface and the sampling end surface, and the sampling end surface is provided with the sawtooth structure. The sampler further comprises a guide member axially fixed on the connecting end surface. The mounting base is provided with a guide groove penetrating through in the axial direction. The guide member is guided and fitted in the guide groove to guide the axial sliding of the sampler.

[0010] In some embodiments, one end of the mounting base away from the sampler is fixed with a mounting shell, which defines a mounting cavity communicating with the guide groove. The elastic buffering device comprises a buffering spring, and two ends of the buffering spring are fixedly connected to a cavity wall of the mounting cavity and the guide member, respectively.

[0011] In some embodiments, the ball joint assembly comprises a ball socket, a connecting ball head and a fastener. The ball socket is fixedly arranged on the mounting base. The connecting ball head is fixedly arranged on the telescopic end. The ball socket surrounds a mounting space in which the connecting ball head is rotatably mounted. An outer spherical surface of the ball socket is provided with a fastening hole communicating with the mounting space. At least a part of the fastener is located outside the ball socket and penetrates through the fastening hole. When the fastener abuts against the connecting ball head, the fastener limits the rotation of the connecting ball head relative to the ball socket.

[0012] In some embodiments, the telescopic assembly comprises an insulating sleeve, a telescopic rod body and a locking structure; the telescopic rod body is slidingly installed in the insulating sleeve, and an end of the telescopic rod body located outside the insulating sleeve is the telescopic end; the locking structure comprises a plurality of lock holes passing through the circumferential wall of the insulating sleeve in the radial direction, a lock pin movably installed on the outer circumferential surface of the telescopic rod body in the radial direction and a driving spring arranged between the lock pin and the telescopic rod body, the plurality of lock holes are arranged at intervals in the axial direction of the insulating sleeve, and the lock pin is used to be inserted into one of the lock holes under the elastic driving force of the driving spring to limit the sliding of the telescopic rod body relative to the insulating sleeve.

[0013] In some embodiments, the microbial sampling device further comprises a protective cover which is detachably connected to the mounting seat and used to cover the sampler.

[0014] In some embodiments, the mounting seat is provided with a clamping boss, and the protective cover is provided with a mounting socket at one end in the axial direction, the mounting socket being used to clamp the outer circumferential surface of the clamping boss.

[0015] In some embodiments, the circumferential edge of the mounting socket and / or the outer circumferential surface of the clamping boss is provided with an elastic sealing structure.

[0016] It can be seen from the technical scheme that the embodiments provided by the application have the following advantages:

[0017] (1) By arranging the sawtooth structure on the outer circumferential surface of the sampler, the sawtooth structure comprises a plurality of sawtooth units, and a sawtooth gap is formed between adjacent sawtooth units, the sawtooth gap being capable of obtaining the microorganisms on the outer insulating surface, compared with the related art of obtaining the microbial sample by wiping with a sterile cotton swab, the integrity and activity of the microbial sample can be improved;

[0018] (2) The embodiment can adjust the telescopic end of the telescopic assembly and the included angle between the sampler and the telescopic end according to different sampling sites, so that the sawtooth structure can reach the sampling site on the power equipment, and the sampling demand of the power equipment at different positions can be met;

[0019] (3) By arranging the elastic buffer structure, the impact of the sawtooth structure on the outer insulating surface can be reduced, thereby reducing the damage to the outer insulating surface in the sampling operation. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without any creative effort.

[0021] Figure 1 is an exploded view of a microbial sampling device according to an embodiment of the present application;

[0022] Figure 2 is an exploded view of a sampler and a protective cover according to an embodiment of the present application;

[0023] Figure 3 is a structural schematic view of a mounting seat and an elastic buffering device according to an embodiment of the present application;

[0024] Figure 4 is an exploded view of a telescopic assembly and a ball hinge assembly according to an embodiment of the present application.

[0025] Reference signs:

[0026] A microbial sampling device 100;

[0027] A mounting seat 1, a mounting body 10, a gasket 11, a clamping boss 12, a guide groove 13;

[0028] A sampler 2, a sawtooth structure 20, a sawtooth unit 201, a sawtooth gap 202, a connecting end face 21, a sampling end face 22, a sampling outer peripheral surface 23, a guide piece 24, a limiting baffle 241, a sampler connecting block 25;

[0029] An elastic buffering device 3, a buffering spring 31, a mounting shell 32, a mounting cavity 321;

[0030] A telescopic assembly 4, an insulating sleeve 41, a handle 411, a telescopic rod body 42, a telescopic end connecting stud 421, a locking structure 43, a locking hole 431, a locking pin 432, a driving spring 433;

[0031] A ball hinge assembly 5, a ball socket 51, a connecting ball head 52, a fastener 53, a ball socket connecting stud 54;

[0032] A protective cover 6, a mounting bayonet 61;

[0033] An elastic sealing structure 7. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, features defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0037] The following is for reference. Figures 1-4 A microbial sampling device 100 for the outer insulating surface is described in an embodiment of the present invention.

[0038] Example 1

[0039] like Figure 1 As shown, this embodiment provides a microbial sampling device 100 for an external insulating surface. The microbial sampling device 100 includes a mounting base 1, a sampler 2, an elastic buffer device 3, and a telescopic component 4.

[0040] The sampler 2 is configured as a column structure, the sampler 2 is slidably installed on the mounting seat 1 along the axial direction, and the sampler 2 is provided with a sawtooth structure 20. The sawtooth structure 20 includes a plurality of sawtooth units 201, and a sawtooth gap 202 is formed between adjacent sawtooth units 201, and the sawtooth gap 202 can obtain microorganisms on the outer insulation surface. The elastic buffer device 3 is arranged between the mounting seat 1 and the sampler 2, and the telescopic end of the telescopic assembly 4 is rotatably connected to the mounting seat 1 to adjust the position of the sawtooth structure relative to the outer insulation surface.

[0041] In a specific application scenario, the sampler stands in a safer low position, determines the part of the power equipment located in a high position that needs to be sampled, adjusts the included angle between the telescopic end of the telescopic assembly 4 and the sampler 2 according to different sampling parts, so that the sawtooth structure 20 can reach the sampling part on the power equipment, and then moves the microbial sampling device 100 to make the sawtooth structure 20 scrape at the sampling part, so that the sawtooth gap 202 can obtain microorganisms on the outer insulation surface. At the same time, the elastic buffer device 3 can reduce the impact of the sawtooth structure 20 on the outer insulation surface.

[0042] It should be emphasized that when sampling the upper insulation surface of the power equipment, the included angle between the telescopic end of the telescopic assembly 4 and the sampler 2 is adjusted, and the telescopic end is higher than the upper insulation surface of the power equipment, and the included angle between the sampler 2 and the telescopic end is about 90°, so that the sampler 2 and the telescopic end can form a corner, thereby facilitating the sampling of microorganisms on the upper insulation surface of the power equipment in the air.

[0043] It can be seen from the technical scheme that the embodiments provided by the application have the following advantages:

[0044] (1) By arranging the sawtooth structure 20 on the outer circumferential surface of the sampler 2, the sawtooth structure 20 includes a plurality of sawtooth units 201, and a sawtooth gap 202 is formed between adjacent sawtooth units 201, and the sawtooth gap 202 can obtain microorganisms on the outer insulation surface, compared with the related art of obtaining a microbial sample by wiping with a sterile cotton swab, the integrity and activity of the microbial sample can be improved;

[0045] (2) The embodiments can adjust the included angle between the telescopic end of the telescopic assembly 4 and the sampler 2 according to different sampling parts, so that the sawtooth structure 20 can reach the sampling part on the power equipment, and can adapt to the sampling requirements of power equipment in different positions;

[0046] (3) By arranging the elastic buffer structure, the impact of the sawtooth structure 20 on the outer insulation surface can be reduced, thereby reducing the damage to the outer insulation surface during sampling operation.

[0047] As Figure 2As shown, further, the plurality of sawtooth units 201 are arranged in an array on the sampling outer peripheral surface 23. By arranging the plurality of sawtooth units 201 in an array on the sampling outer peripheral surface 23, the sawtooth units 201 can uniformly contact the outer insulation surface, regardless of whether the sampler 2 is rotated or axially moved, so that the microorganisms in different regions of the outer insulation surface can be more uniformly collected, and the sample is more representative; at the same time, the sawtooth gaps 202 can effectively capture the microorganism sample, and the regular gap size can more stably retain the microorganisms and reduce the sample amount fluctuations caused by the gap size being too large or too small.

[0048] Here, the plurality of sawtooth units 201 arranged in an array on the sampling outer peripheral surface 23 means that, in the circumferential direction of the sampling outer peripheral surface 23, the plurality of sawtooth units 201 are equally angularly spaced to form a ring-shaped array of sawtooth units 201. In the axial direction of the sampling outer peripheral surface 23, the plurality of ring-shaped arrays of sawtooth units 201 are spaced at equal distances.

[0049] In one specific example, the sawtooth height is 0.5 mm. In the circumferential direction, the spacing between adjacent two sawtooth units 201 can be 2 mm. In the axial direction, the spacing between adjacent two sawtooth units 201 is 2 mm.

[0050] Further, the sawtooth unit 201 is configured as a steel material structural member integrally formed on the outer peripheral surface of the sampler 2. Thus, the sawtooth unit 201 has higher rigidity and can penetrate into small concave and convex places to retain microorganisms through the sawtooth gap 202, thereby improving the sampling success rate. In combination with the above-mentioned embodiments, the elastic buffer device 3 is arranged between the mounting seat 1 and the sampler 2, which can reduce the impact of the sawtooth structure 20 on the outer insulation surface, thereby reducing the damage caused by the sawtooth structure 20 to the outer insulation surface during sampling operation.

[0051] In one specific example, the sampler 2 and the sawtooth structure 20 are both made of 316L stainless steel material.

[0052] Embodiment Two

[0053] As Figure 2 and Figure 3As shown, the sampler 2 further includes a connecting end face 21, a sampling end face 22, and a sampling outer peripheral surface 23. The sampling outer peripheral surface 23 connects the connecting end face 21 and the sampling end face 22. The sampling end face 22 is provided with a serrated structure 20. The sampler 2 also includes a guide member 24 axially fixed on the connecting end face 21. A guide groove 13 extending axially is provided on the mounting base 1. The guide member 24 is guided and fitted in the guide groove 13 to guide the sampler 2 to slide axially. The serrated structure 20 on the sampling end face 22 of the sampler 2 expands the sampling area and improves the sampling range and efficiency. The guide member 24 guides the sampler 2 to slide axially by fitting with the guide groove 13 of the mounting base 1, which can reduce the sampler 2's movement and offset, improve the stability of the contact between the serrated structure 20 and the outer insulation surface, and reduce sampling deviation or scratches on the outer insulation surface caused by shaking.

[0054] Please return Figure 1 In a specific example, the guide member 24 is specifically constructed as a columnar structure extending along the axial direction. The guide member 24 is provided with two limiting baffles 241 spaced apart along the axial direction. The part of the guide member 24 between the two limiting baffles 241 can slide axially in the guide groove 13.

[0055] Furthermore, the limiting baffle 241 is specifically constructed as a limiting nut, and the outer peripheral surface of the guide member 24 is screwed to the limiting nut. The axial interval between the two limiting nuts can be adjusted by rotating the limiting nut.

[0056] like Figure 3 As shown, further, a mounting shell 32 is fixed to one end of the mounting base 1 away from the sampler 2, and the mounting shell 32 defines a mounting cavity 321 that connects to the guide groove 13; the elastic buffer device 3 includes a buffer spring 31, and the two ends of the buffer spring 31 are respectively fixedly connected to the cavity wall of the mounting cavity 321 and the guide member 24. The mounting shell 32 is fixed to one end of the mounting base 1 away from the sampler 2, and the mounting cavity 321 defined by it connects to the guide groove 13, providing a closed mounting space for the buffer spring 31 and preventing the buffer spring 31 from being exposed to external environmental interference. The two ends of the buffer spring 31 are respectively connected to the wall of the mounting cavity 321 and the guide member 24, and can directly act on the guide member 24 axially. When the sampler 2 slides axially, the spring can efficiently absorb impact energy through extension and contraction, enhance the buffering effect on the sawtooth structure 20, and reduce damage to the surface of the equipment. At the same time, the cooperation between the guide member 24 and the guide groove 13 ensures the stability of the spring extension and contraction direction, avoids skewing affecting the buffering accuracy, and the overall structure is compact, improving the buffering reliability and operational stability of the device in high-altitude environments.

[0057] In some specific examples, the mounting housing 32 may be made of ABS plastic.

[0058] Example 3

[0059] likeFigure 4 As shown, further, the ball joint assembly 5 includes a ball socket 51, a connecting ball head 52 and a fastener 53. The ball socket 51 is fixedly arranged on the mounting base 1; the connecting ball head 52 is fixedly arranged on the telescopic end; the ball socket 51 encloses an installation space in which the connecting ball head 52 is rotatably installed, and the outer spherical surface of the ball socket 51 is provided with a fastening hole communicating with the installation space; at least part of the fastener 53 is located outside the ball socket 51 and passes through the fastening hole, and when abutting against the connecting ball head, it limits the rotation of the connecting ball head 52 relative to the ball socket 51. That is to say, in the ball joint assembly 5, the cooperation of the ball socket 51 and the connecting ball head 52 realizes the flexible rotation between the sampler 2 and the telescopic end at multiple angles, which can adapt to the outer insulating surface with different inclinations or orientations, and the fastener 53 can lock the adjusted angle by abutting against the connecting ball head 52, avoiding the angle deviation during sampling.

[0060] In a specific example, a ball socket connecting stud 54 is connected between the ball socket 52 and the telescopic end of the telescopic rod body 42.

[0061] As shown, Figure 4 Further, the telescopic assembly 4 includes an insulating sleeve 41, a telescopic rod body 42 and a locking structure 43. The telescopic rod body 42 is slidingly installed in the insulating sleeve 41, and the end of the telescopic rod body 42 located outside the insulating sleeve 41 is the telescopic end; the locking structure 43 includes a plurality of lock holes 431 radially penetrating the peripheral wall of the insulating sleeve 41, a lock pin 432 movably installed on the outer peripheral surface of the telescopic rod body 42 in the radial direction, and a driving spring 433 arranged between the lock pin 432 and the telescopic rod body 42, the plurality of lock holes 431 are arranged at intervals along the axial direction of the insulating sleeve 41, and the lock pin 432 is used to be inserted into one of the lock holes 431 under the driving of the driving spring 433 to limit the sliding of the telescopic rod body 42 relative to the insulating sleeve 41. The insulating sleeve 41 of the telescopic assembly 4 provides insulation protection in a high-voltage environment, ensuring the safety of the operator, the telescopic rod body 42 slidingly cooperates to adjust the overall length to adapt to different high-altitude distances, and the driving spring 433 pushes the lock pin 432 to insert into the lock hole 431 in the locking structure 43, which can quickly lock the required length and prevent accidental telescoping during use, thereby adapting to various sampling needs in high-altitude high-voltage environments and improving the operation safety and sampling reliability.

[0062] As shown, Figure 4 The end of the sleeve away from the sampler 2 is provided with a handle 411, and the surface of the handle 411 is covered with soft rubber ABS (Acrylonitrile Butadiene Styrene copolymer) plastic. The ABS plastic provides basic support strength, and the rubber outer layer provides a soft and comfortable feel for the user, while enhancing the slip resistance when holding.

[0063] Example Four

[0064] In combination with Figure 1 , Figure 2 and Figure 3 , further, the microbial sampling device 100 further comprises a protective cover 6 detachably connected to the mounting seat 1 and used for covering the sampler 2. Before and after sampling by the sampler 2, the protective cover 6 is covered outside the sampling seat to avoid external sundries or bacteria from contaminating the sample and improve the accuracy of sampling.

[0065] In combination with Figure 1 , Figure 2 and Figure 3 , further, the mounting seat 1 is provided with a clamping boss 12, and one end of the protective cover 6 in the axial direction is provided with a mounting socket 61 used for clamping the outer periphery of the clamping boss 12. The protective cover 6 is detachably connected through the clamping of the clamping boss 12 and the mounting socket 61, which not only ensures that the protective cover 6 can be quickly assembled and disassembled before and after sampling for convenient operation, but also stably covers the sampler 2 to avoid accidental falling.

[0066] In combination with Figure 1 , Figure 2 and Figure 3 , in a specific example, the mounting seat 1 comprises an installation body 10, a gasket 11 and a clamping boss 12 arranged in sequence in the axial direction. In combination with the above embodiment, the end of the installation body 10 away from the sampler 2 is provided with a mounting shell 32, and the gasket 11 is arranged between the installation body 10 and the clamping boss 12 for dispersing pressure.

[0067] In combination with Figure 1 , Figure 2 and Figure 3 , in a specific example, the protective cover 6 is used to protect the sampler 2 from external pollution or physical damage in a non-working state, and prevent the sampler 2 from accidentally scratching or damaging the surrounding environment. After the sampling operation is completed, the protective cover 6 can also effectively isolate the external environment to prevent secondary pollution of the sample and ensure the reliability of the sampling result. The inner cavity size of the protective cover 6 is greater than the outer diameter of the sampler 2, and the protective cover 6 is made of polycarbonate material. The material has high transparency, which is convenient for the operator to observe the state of the sampler 2. At the same time, it has excellent impact resistance, light weight and chemical corrosion resistance, and can withstand possible impact in the sampling environment and erosion of external chemicals.

[0068] In combination with Figure 1 , Figure 2 and Figure 3 , further, the circumferential edge of the mounting socket 61 and / or the outer periphery of the clamping boss 12 is configured as an elastic sealing structure 7. The elastic sealing structure 7 of the edge of the mounting socket 61 and / or the outer periphery of the clamping boss 12 can enhance the sealing performance of the protective cover 6 and the mounting seat 1, block external sundries and bacteria from invading through the gap, and further reduce the risk of pollution.

[0069] Combining Figure 1 , Figure 2 and Figure 3 For example, the elastic sealing structure 7 here is specifically an annular sealing elastic rubber ring.

[0070] Further, the outer circumferential surface of the protective cover 6 is provided with an antibacterial material layer. The antibacterial material layer on the outer circumference of the protective cover 6 can inhibit the breeding of microorganisms on its surface in the external environment, avoid the protective cover 6 itself becoming a carrier of miscellaneous bacteria, and prevent pollution of the sampler 2 during the assembly and disassembly process.

[0071] A specific example will be described below in combination with Figures 1-4 .

[0072] The protective cover 6 has a diameter of 30 mm, a length of 50 mm, and a wall thickness of 2 mm.

[0073] The sampler 2 is configured as a cylindrical structure with a diameter of 25 mm and a length of 40 mm. The connecting end surface 21 of the sampler 2 is connected to the guide 24 through the sampler connecting block 25, and the two ends of the sampler connecting block 25 in the axial direction are respectively provided with screw holes (screw thread specification M5). The connecting end surface 21 and the guide 24 are both provided with studs (screw thread specification M5, length 15 mm, diameter 5 mm) for threaded connection with the screw holes. The studs on the connecting end surface 21, the studs on the guide 24, and the sampler connecting block 25 are all carbon steel parts, and the outer surface of the carbon steel is galvanized, having excellent mechanical properties and corrosion resistance, suitable for long-term use of the device.

[0074] The sawtooth height is 0.5 mm, the pitch is 2 mm, and the sawteeth are evenly distributed. The sawteeth and the sampler 2 are made of 316L stainless steel. Medical stainless steel (316L) has excellent corrosion resistance, biocompatibility, and mechanical strength, and is not easily oxidized or deformed by the external environment, ensuring the long-term durability and sample integrity of the sampler 2.

[0075] The mounting seat 1 has a diameter of 20 mm, a length of 25 mm, and an internal thread of M5 specification, and is made of aluminum alloy.

[0076] The guide 24 has a length of 40 mm, a diameter of 5 mm, and a thread specification of M5, and is made of carbon steel (galvanized).

[0077] The elastic sealing structure 7 is configured as a sealing ring, which is used to enhance the sealing between the protective cover 6 and the mounting seat 1, prevent external pollutants from entering the sampling area during operation, and ensure the purity of the sample. The sealing ring has an outer diameter of 30 mm, an inner diameter of 25 mm, and a length of 3 mm. It is made of silicone rubber (food grade) and has excellent elasticity and chemical corrosion resistance.

[0078] The clamping boss 12 has a diameter of 25 mm and a length of 30 mm, and is configured as an aluminum alloy (6061-T6) material piece.

[0079] The gasket 11 has a diameter of 30 mm, a thickness of 2 mm, and an inner hole diameter of 6 mm, which matches the diameter of the screw rod. The gasket 11 is made of stainless steel (304) material and has high strength and wear resistance. The gasket 11 is placed between the mounting seat 1 body and the clamping boss, effectively disperses mechanical load, and provides a buffering effect.

[0080] The free length of the buffer spring 31 is 50 mm, the outer diameter is 20 mm, the spring wire diameter is 2 mm, the spring constant is 2.5 N / mm, and the spring steel material is 65Mn. The buffer spring has excellent elastic properties and fatigue resistance, and can maintain stable resilience for a long time. One end of the compression spring is embedded in the cavity wall of the mounting cavity 321 formed by the mounting shell 32, and the other end is connected to the sampler 2 through the guide piece 24.

[0081] The mounting shell 32 has an outer diameter of 35 mm, a length of 60 mm, and a wall thickness of 2 mm.

[0082] The telescopic rod body 42 and the sleeve are used in combination to realize the length adjustment function of the sampler 2. The telescopic rod body 42 has an outer diameter of 15 mm and a length of 100 mm. The sleeve has an inner diameter of 16 mm and a length of 120 mm. The telescopic rod body 42 and the sleeve are both made of stainless steel, have excellent strength and corrosion resistance, and the surface is polished to reduce friction. The telescopic end of the telescopic rod body 42 is internally provided with a threaded groove for screwing a telescopic end connecting stud 421. The telescopic end connecting stud 421 is also used to screw a threaded groove provided on the connecting ball head 52, thereby realizing the connection between the telescopic end of the telescopic rod body 42 and the connecting ball head 52.

[0083] The telescopic rod body 42 is hollow inside and fixed with a T-shaped support rod at the bottom. The T-shaped support rod has a length of 30 mm and a width of 15 mm, and is integrally arranged at the bottom end of the telescopic rod body 42. Six drive springs 433 fixed hooks are distributed at a corresponding interval of 10 mm on both sides to connect six 18 compression springs.

[0084] The lock pin 432 is a core component for adjusting the length of the telescopic rod. It can lock the position of the telescopic body by being inserted into the lock hole 431, ensuring the stability of the sampler 2 at different lengths. The lock pin 432 has a diameter of 10 mm and a thickness of 3 mm. It can move inward by 3 mm when overcoming the compression of the drive spring 433. When pressed completely, the lock pin 432 enters the sleeve inside completely.

[0085] The lock hole 431 is used in combination with the lock pin 432. The lock hole 431 has a diameter of 10 mm and a spacing of 10 mm, and is arranged at intervals along the axis of the sleeve.

[0086] The sleeve has a handle 411 at the end away from the sampler 2, the handle 411 has a length of 150 mm and an outer diameter of 16 mm, and is an extension of the sleeve, the surface of the handle 411 is covered with soft rubber and ABS plastic. The ABS plastic provides basic support strength, and the rubber outer layer provides a soft and comfortable feel for the user, and enhances the anti-slip property when holding.

[0087] The ball socket 51 has an outer diameter of 20 mm and an inner diameter of 16 mm, and is made of aluminum alloy 6061-T6. The connecting ball head 52 has a diameter of 15 mm and is made of 304 stainless steel.

[0088] With the continuous progress of power equipment technology and the continuous expansion of power grid scale, the safety and reliability of power system have become an important issue in modern energy field. In power equipment, the outer insulation surface not only bears the important functions of electrical isolation and mechanical support, but also is the part directly contacting with the external environment. However, complex external environment, such as high temperature, high humidity, atmospheric pollution and microbial pollution, will have adverse effects on the performance of the outer insulation surface, and even cause equipment operation failure, which seriously threatens the stability and safety of the power system. In recent years, the problem of microbial pollution has gradually attracted the attention of academia and industry. Studies have shown that the outer insulation surface of electrical equipment is easily invaded by mold, algae and bacteria and other microorganisms when it is exposed to the natural environment for a long time. After these microorganisms adhere to the insulation surface, they will form corrosive metabolites as the environmental conditions change, gradually eroding the insulation material, thereby reducing its surface resistance and mechanical strength. At the same time, the adhesion of microorganisms will also change the electric field distribution of the insulation surface, increase the local electric field strength, and accelerate the aging of the insulation material, eventually leading to problems such as discharge and breakdown of the equipment. Especially in high humidity and salt spray environment, the harm of microbial pollution is more significant, which directly threatens the service life and operation stability of the equipment. Traditional microbial pollution detection methods usually include visual inspection method, wiping method and microscope observation method. These methods can identify and analyze microbial pollution to some extent, but have many limitations. For example, the visual inspection method is limited by the subjective judgment of the operator, and has low accuracy; the wiping method can extract samples, but easily damages the microbial cells, affecting subsequent culture and analysis. In addition, these methods usually cannot effectively adapt to the sampling requirements in the special environment of high altitude and high voltage of electrical equipment, and have low sampling efficiency, insufficient safety, and the samples are easily secondarily contaminated in the sampling and transfer process, resulting in inaccurate detection results.

[0089] In practical applications, power equipment operation and maintenance personnel need a tool that can quickly, efficiently and safely collect microbial samples to achieve accurate detection and evaluation of the contamination of the surface of the equipment. However, there is currently a lack of specialized sampling devices designed specifically for the outer insulation surface of electrical equipment on the market. Existing sampling tools are often simple in structure and lack scientific design support, making it difficult to collect a sufficient number of microbial samples without damaging the insulation surface; at the same time, these tools are inconvenient to operate during use and are difficult to meet the operational needs in high-altitude or complex environments. This situation not only seriously hinders the development of microbial detection technology, but also hinders the efficiency improvement of electrical equipment operation and maintenance work.

[0090] Third, the device needs to have good sealing and anti-pollution performance to prevent the sample from being secondarily contaminated during collection, transfer and storage; fourth, the sampling device needs to use lightweight and durable materials to reduce the burden on the operator and at the same time improve the durability and adaptability of the equipment.

[0091] To meet this technical need, the present application designs a microbial sampling device 100 for the outer insulation surface. The device, starting from functionality, safety and ease of use, adopts a scientific and reasonable structural design to ensure efficient sampling in various complex environments and maximize the activity of the microbial sample. By combining the sampler 2, connecting rod, protective cover 6 and other modular designs, the device can flexibly adapt to different operational needs while ensuring simple operation and convenient use. More importantly, the device pays special attention to the biological safety of the sample, significantly reduces the risk of sample contamination and operator exposure through innovative protection mechanisms, thereby providing a reliable guarantee for subsequent microbial culture and detection.

[0092] The present application has the beneficial effect of designing a microbial sampling device 100 suitable for the outer insulation surface of electrical equipment, which solves the problems of low sampling efficiency, sample damage and sample contamination of traditional sampling devices through reasonable structural design and component cooperation. The device uses the special design of the zigzag sampler 2 to achieve non-destructive and efficient scraping of microbial samples; in combination with the telescopic rod assembly and the ball hinge assembly 5, it adapts to sampling requirements of different heights and distances; and through the sealing design of the protective cover 6, it effectively prevents secondary contamination of the sample during sampling and transfer. The device is compact in structure, simple to operate, safe and efficient, and can be used multiple times, significantly improving the convenience and reliability of sampling, while ensuring the integrity of the microbial sample and reducing human error and safety risks during sampling.

[0093] Other configurations and operations of the microorganism sampling device 100 according to the embodiment of the present application are known to those skilled in the art, and thus will not be described in detail. In the description of the present application, "a first feature" and "a second feature" can include one or more of the features. Among them, the upward direction, the leftward direction, and the frontward direction are based on the upward direction, the leftward direction, and the frontward direction shown in the drawings.

[0094] In the description of the present application, unless explicitly defined and limited otherwise, "on" or "under" of a first feature to a second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature therebetween. Also, "on", "above", and "over" of a first feature to a second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0095] In the description of the present application, the description with reference to the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily mean the same embodiment or example. Also, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0096] Although the embodiments of the present application have been shown and described, it will be understood by those skilled in the art that various changes, modifications, alternatives, and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A microbial sampling device for an external insulating surface, characterized in that, include: Mounting base (1); The sampler (2) is constructed as a cylindrical structure and has a sampling outer peripheral surface (23). A serrated structure (20) is provided on the sampling outer peripheral surface (23). The serrated structure (20) includes multiple serrated units (201). A serrated gap (202) for obtaining microorganisms on the outer insulation surface is formed between adjacent serrated units (201). The sampler (2) is slidably mounted on the mounting base (1) along the axial direction; An elastic buffer device (3) is disposed between the mounting base (1) and the sampler (2); The telescopic assembly (4) and the ball joint assembly (5) are used to adjust the position of the serrated structure (20) relative to the outer insulating surface. The telescopic end of the telescopic assembly (4) is connected to the mounting base (1) through the ball joint assembly (5).

2. The microbial sampling device for the outer insulation surface according to claim 1, characterized in that, Multiple sawtooth units (201) are arrayed on the sampling outer peripheral surface (23).

3. The microbial sampling device for the outer insulation surface according to claim 1 or 2, characterized in that, The sawtooth unit (201) is constructed as a steel structural component integrally formed on the outer peripheral surface.

4. The microbial sampling device for the outer insulation surface according to claim 1, characterized in that, The sampler (2) has a connecting end face (21), a sampling end face (22) and a sampling outer peripheral surface (23) connected between the connecting end face (21) and the sampling end face (22), and the sampling end face (22) is provided with the sawtooth structure (20). The sampler (2) also includes a guide (24) axially fixed on the connecting end face (21); The mounting base (1) is provided with a guide groove (13) that runs through the axial direction. The guide (24) is guided and fitted in the guide groove (13) to guide the sampler (2) to slide axially.

5. The microbial sampling device for the outer insulation surface according to claim 4, characterized in that, The mounting base (1) is fixed with a mounting shell (32) at one end away from the sampler (2), and the mounting shell (32) defines a mounting cavity (321) that communicates with the guide groove (13). The elastic buffer device (3) includes a buffer spring (31), the two ends of which are fixedly connected to the cavity wall of the mounting cavity (321) and the guide member (24), respectively.

6. The microbial sampling device for the outer insulation surface according to claim 1, characterized in that, The ball joint assembly (5) includes a ball socket (51), a connecting ball head (52), and a fastener (53); The ball socket (51) is fixedly mounted on the mounting base (1); The connecting ball head (52) is fixedly disposed on the telescopic end; The ball socket (51) encloses an installation space for rotating the connecting ball head (52), and the outer spherical surface of the ball socket (51) is provided with a fastening hole communicating with the installation space; At least a portion of the fastener (53) is located outside the ball socket (51) and passes through the fastening hole, and the fastener (53) restricts the rotation of the connecting ball head (52) relative to the ball socket (51) when it abuts against the connecting ball head (52).

7. The microbial sampling device for the outer insulation surface according to claim 6, characterized in that, The telescopic assembly (4) includes an insulating sleeve (41), a telescopic rod body (42), and a locking structure (43). The telescopic rod body (42) is slidably installed inside the insulating sleeve (41), and the end of the telescopic rod body (42) located outside the insulating sleeve (41) is the telescopic end; The locking structure (43) includes a plurality of locking holes (431) that radially penetrate the peripheral wall of the insulating sleeve (41), a locking pin (432) that is radially movably mounted on the outer peripheral surface of the telescopic rod body (42), and a drive spring (433) disposed between the locking pin (432) and the telescopic rod body (42). The plurality of locking holes (431) are spaced apart along the axial direction of the insulating sleeve (41). The locking pin (432) is used to be inserted into one of the locking holes (431) under the elastic force of the drive spring (433) to restrict the telescopic rod body (42) from sliding relative to the insulating sleeve (41).

8. The microbial sampling device for the outer insulation surface according to claim 1, characterized in that, It also includes a protective cover (6), which is detachably connected to the mounting base (1) and is used to cover the sampler (2).

9. The microbial sampling device for the outer insulation surface according to claim 8, characterized in that, The mounting base (1) is provided with a snap-fit ​​boss (12), and the protective cover (6) is provided with a mounting slot (61) at one end in the axial direction. The mounting slot (61) is used to snap onto the outer circumferential surface of the snap-fit ​​boss (12).

10. The microbial sampling device for the outer insulation surface according to claim 9, characterized in that, The circumferential edge of the mounting slot (61) and / or the outer circumferential surface of the snap-fit ​​boss (12) are provided with an elastic sealing structure (7).

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