Purging type infrared thermal imager protection cabin

Abstract

The utility model relates to the technical field of infrared thermal imaging, and specifically discloses a purging type infrared thermal imager protection cabin. Comprising a protective cover which comprises an outer cabin, an inner cabin and a purging air channel formed between the outer cabin and the inner cabin; one end of the protective cover is also provided with an air hole communicated with the outside, and the air hole is communicated with the purging air passage; the thermal imager is arranged in the protective cover, and a lens of the thermal imager is arranged at one end, provided with the air hole, of the protective cover; the gas supply assembly is communicated with the purging gas channel and the inner cabin through a connector and conveys gas into the purging gas channel for circulation; wherein the air is sprayed out through the air holes, so that active blowing of the lens area is realized. Through the design of the air holes and the purging grooves, it is ensured that airflow can ensure the purging uniformity, and the phenomenon of local overheating is effectively avoided, so that a more stable and safer working environment is provided for the thermal imager.

Description

TECHNICAL FIELD

[0001] The utility model relates to infrared thermal imaging technical field especially, relate to a kind of blow type infrared thermal imager protective cabin. BACKGROUND

[0002] As an advanced non-contact temperature detection means, infrared thermal imaging technology has been widely penetrated into numerous industries and fields. In the industrial detection field, infrared thermal imager plays a crucial role, which can effectively detect the temperature distribution of equipment surface and timely find those temperature abnormal components, which has extremely important significance for preventing equipment failure and avoiding unnecessary downtime. Especially in monitoring electrical equipment, such as transformer, switch cabinet, etc., infrared thermal imager can accurately identify overheated contacts or possible problems due to insulation aging. In addition, it also plays an important role in monitoring temperature changes of mechanical components, which helps to prevent equipment failure caused by overheating or poor lubrication.

[0003] However, the environment of industrial site is often very harsh, and in harsh industrial environment, complex working conditions such as high temperature, high dust, high humidity and corrosive gas pose a severe challenge to the stable operation of infrared thermal imager. High temperature can easily lead to overheating failure of electronic components, increase of lens thermal noise and material aging, while high dust environment can cause lens pollution, airway blockage and mechanical component wear, high humidity and corrosive gas can cause lens fogging, circuit short circuit and metal component corrosion, etc.

[0004] In the patent "infrared thermal imager protective cover" (announcement number CN201548329U, hereinafter referred to as prior art 1) discloses a protective cover of infrared thermal imager, the main technical principle of prior art 1 is to form dustproof air curtain by dustproof air curtain and blowing groove for gas cooling of protective cover, and to blow the lens protection sheet, so as to greatly improve the dustproof effect; through movable baffle mechanism, infrared thermal imager can be shielded and isolated when not working, which can more effectively protect infrared thermal imager. However, this protective cover cannot perform synchronous blowing on the internal and lens parts. UTILITY MODEL CONTENT

[0005] Therefore, the utility model embodiment provides a blow type infrared thermal imager protective cabin to solve the problem that the stable operation and protection of infrared thermal imager in prior art in harsh industrial environment are difficult to ensure.

[0006] The utility model discloses an embodiment provides a kind of purge type infrared thermal imager protective cabin, including protective cover, including outer cabin and inner cabin and the purge air passage formed between the outer cabin and inner cabin;The one end of the protective cover is also equipped with the air hole being communicated with outside, the air hole is communicated with the purge air passage;Thermal imager is located in the protective cover and the lens of the thermal imager is arranged in the air hole end of the protective cover;Gas supply assembly is communicated with the purge air passage and inner cabin by connector, and gas is transported to purge air passage and circulates;Wherein, the gas is ejected by the air hole, to realize the initiative purge of the lens area.

[0007] Preferably, the protective cover further comprises a first end cap and a second end cap; the first end cap and the second end cap are respectively in sealing connection with the two ends of the protective cover; the first end cap is provided with a purge groove, and the purge groove communicates the purge air passage with the air hole to realize directional purge of the lens area.

[0008] Preferably, the air hole and the purge groove are both in annular array distribution to uniformly purge the lens area.

[0009] Preferably, the protective cover is further provided with a lens protection assembly; the lens protection assembly comprises a transparent lens protection sheet and a compression ring, and the lens protection sheet is sealed and fixed on the first end cap by the compression ring and forms the lens cover.

[0010] Preferably, the top of the protective cover is further provided with a protective cover; the protective cover is connected and fixed between the outer cabin by screws arranged on both sides, and a containing space is formed between the protective cover and the outer cabin.

[0011] Preferably, the protective cover is further provided with a shutter cover automatic opening and closing mechanism; the shutter cover automatic opening and closing mechanism comprises a driving cylinder and a shutter cover connected with the piston rod of the driving cylinder; a gasket is arranged between the shutter cover and the lens protection sheet.

[0012] Preferably, the driving cylinder is arranged in the containing space; the shutter cover and the piston rod of the driving cylinder are connected and fixed by bolt and double-stacked self-locking release washer combination; wherein, the double-stacked self-locking release washer is composed of two washers, the outer side has a radial relief surface, and the inner side is a bevel gear surface; when the shutter cover is opened and closed, the inner side bevel gear surfaces of the washers are engaged with each other to prevent the bolt from loosening.

[0013] Preferably, the connector is a throttle valve; the throttle valve is communicated with the purge air passage; the gas supply assembly supplies gas into the purge air passage after being connected with the throttle valve.

[0014] Preferably, the connector comprises a throttle valve, a heavy-duty connector male head, a first Luer and a second Luer; the heavy-duty connector male head and the first Luer are respectively in communication with the interior of the inner cabin; the second Luer is arranged on the protective cover and connected with the throttle valve and the driving cylinder through the pneumatic control valve and the air pipe respectively; the outlet of the first Luer is connected with the inlet of the second Luer through the air pipe; the throttle valve is in communication with the purge air passage; the gas supply assembly supplies gas through the heavy-duty connector male head.

[0015] Preferably, the interior of the inner cabin is further provided with a circuit board and an environment detection assembly arranged on the circuit board; the environment detection assembly is used for detecting environment information in the interior of the protective cover; the environment information comprises temperature, humidity, pressure and position information.

[0016] The protective cabin for the infrared thermal imager provided by the utility model has the following beneficial effects:

[0017] In the design of the utility model, the directional purge mechanism of the purge air passage and the air hole can effectively remove various pollutants in the lens area, such as dust, water mist and oil stains. This method significantly improves the cleanliness of the imaging equipment, thereby avoiding the imaging blur problem caused by dust accumulation and ensuring the normal operation of the thermal imager and preventing the thermal imager from failing due to dust accumulation. In addition, the gas delivered by the gas supply assembly flows in the purge air passage and the inner cabin, which not only removes the heat generated by the thermal imager and the circuit board during operation, but also helps to reduce the temperature inside the entire equipment. In this way, the performance degradation or device damage problem caused by high-temperature environment can be effectively avoided. More importantly, by adopting the design of the annular array distributed air hole and the purge groove, the uniformity of the airflow during purging is ensured, and the occurrence of local overheating phenomenon is effectively avoided, thereby providing a more stable and safe working environment for the thermal imager. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed to be used in the embodiments of the utility model will be briefly introduced below. For those skilled in the art, other drawings can also be obtained on the premise of not creating laboriously, and these are within the protection scope of the utility model.

[0019] Figure 1 It is a structure schematic diagram of a purge type infrared thermal imager protective cabin;

[0020] Figure 2 It is an external structure schematic diagram of a purge type infrared thermal imager protective cabin

[0021] Figure 3It is a cross-sectional structure diagram of a purge type infrared thermal imager protection cabin

[0022] Figure 4 It is a gas flow structure diagram of a purge type infrared thermal imager protection cabin

[0023] Parts and numbers in the figure:

[0024] 100-protection cover, 110-outer cabin, 120-inner cabin, 130-purge airway, 140-first end cover, 150-second end cover, 160-protection cover, 161-containing space, 162-gas path support, 171-accepting guide ring, 180-mounting plate, 181-circuit board;

[0025] 200-thermal imager, 210-lens;

[0026] 300-gas supply assembly;

[0027] 410-lens protection sheet, 420-pressing ring;

[0028] 510-driving cylinder, 511-piston rod, 520-shutter cover, 531-gasket, 532-bolt, 540-cylinder support;

[0029] 610-throttle valve, 620-heavy load connector male head, 630-first Luer head, 640-second Luer head, 650-pneumatic control valve;

[0030] 710-gimbal support, 711-base, 712-rotating seat, 713-rotating shaft. DETAILED DESCRIPTION

[0031] For the purpose, technical scheme and advantages of the embodiments of the utility model, the technical scheme in the embodiments of the utility model will be clearly and completely described below in combination with the drawings in the embodiments of the utility model. It should be noted that in this paper, relationship terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between the entities or operations. In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the utility model. Moreover, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitation, the elements defined by the statement "include" do not exclude the presence of other identical elements in the process, method, article or device including the elements. If there is no conflict, the embodiments of the utility model and various features in the embodiments can be combined with each other, and are all within the protection scope of the utility model.

[0032] Embodiment 1

[0033] Please see Figure 1 The utility model embodiments provide a kind of purge infrared thermal imager protection cabin;In industrial detection, infrared thermal imager 200 is often used to detect the temperature anomaly of equipment surface, timely find overheated component, prevent equipment failure and shutdown;It is often used to detect overheating section electricity or insulation aging problem of electrical equipment (such as transformer, switch cabinet);It is often used to monitor the temperature change of mechanical component, prevent the failure caused by overheating or poor lubrication. But due to the relatively poor industrial site environment, especially in high temperature, high dust and high humidity environment, it can seriously affect the performance of infrared thermal imager 200 and equipment itself. Therefore, cooling, dustproof and moisture-proof protection measures are needed to effectively reduce the temperature, dust concentration and humidity level of the environment where infrared thermal imager 200 is located, so as to ensure the definition and accuracy of the collected image. The thermal imager 200 is installed on the inner cabin 120 by mounting plate 180.

[0034] A receiving guide ring 171 is also arranged at the position of the lens 210; the receiving guide ring 171 serves as a mounting reference of the lens 210, ensuring that the optical center of the lens 210 and the protective cover 100 are strictly aligned, avoiding imaging distortion or focusing inaccuracy caused by deviation. The high-precision structural design can compensate for the assembly tolerance, ensuring the optical path consistency of the thermal imager 200. In an industrial vibration environment, the receiving guide ring 171 absorbs mechanical impact through elastic material or damping structure, preventing the lens 210 from loosening or the optical elements from being damaged, and is especially suitable for high-frequency vibration scenes such as mines and metallurgy.

[0035] In the present embodiment, the purge-type infrared thermal imager 200 protective cabin includes a protective cover 100 as external protection; the protective cover 100 includes an outer cabin 110 and an inner cabin 120, and a purge air passage 130 formed between the outer cabin 110 and the inner cabin 120; by injecting gas in the purge air passage 130, the gas flows therein to achieve cooling of the protective cover 100. One end of the protective cover 100 is also provided with a gas hole communicating with the outside, which communicates with the purge air passage 130.

[0036] The protective cover 100 also has a thermal imager 200 arranged therein, and a lens 210 of the thermal imager 200 is arranged at one end of the protective cover 100 provided with a gas hole; the outer part of the protective cover 100 is also connected with a gas supply assembly 300; the gas supply assembly 300 communicates with the purge air passage 130 and the inner cabin 120 through a connector, and delivers gas into the purge air passage 130 for circulation, achieving drying of the inner cavity and cooling of each part. The gas can also be sprayed out through the gas hole to actively purge the area where the lens 210 is located, avoiding dust and other impurities in the lens 210 area.

[0037] In the present embodiment, the purge air passage 130 penetrates through the entire body of the protective cover 100, which can better cool the interior of the protective cover 100 and ensure that the thermal imager 200 can work stably in a high-temperature environment. In addition, the design of the purge air passage 130 also helps to prevent internal condensation, thereby avoiding corrosion or performance degradation of optical elements caused by excessive humidity. Through the continuous gas supply of the gas supply assembly 300, it can ensure that the gas in the purge air passage 130 is always in a flowing state, which not only can effectively remove the dust on the lens 210, but also can prevent temperature unevenness caused by gas stagnation. This design enables the purge-type infrared thermal imager protective cabin to maintain excellent performance and stability in harsh environments, and is especially suitable for outdoor monitoring, industrial automation and other applications that require long-term stable operation.

[0038] In use, the gas supply assembly 300 is started, and the gas enters the purge gas channel 130 and the inner cabin 120 through the connector, flows in the purge gas channel 130, not only takes away the heat inside the protective cover 100, achieving cooling of the protective cover 100, but also ensures the dryness of the inner cabin 120, preventing the influence of moisture on the thermal imager 200. At the same time, part of the gas is sprayed out through the air holes, actively purging the area where the lens 210 is located, effectively removing dust and impurities on the lens 210, ensuring the clarity of the picture taken by the thermal imager 200. This design not only improves the use effect of the purge-type infrared thermal imager 200 protective cabin, but also greatly prolongs the service life of the thermal imager 200.

[0039] Further, the protective cover 100 further comprises a first end cover 140 and a second end cover 150; the first end cover 140 and the second end cover 150 are respectively in sealing connection with the two ends of the protective cover 100; the first end cover 140 is provided with a purge groove, and the purge groove communicates the purge gas channel 130 with the air holes, so as to realize directional purging of the area of the lens 210.

[0040] In use, please refer to Figure 3 The first end cover 140 and the second end cover 150 are in sealing connection with the two ends of the protective cover 100, which enhances the sealing performance of the protective cover 100 and also ensures the stable connection between the purge gas channel 130 and the air holes. When the gas flows in the purge gas channel 130, it can be more accurately directionally purged in the area where the lens 210 is located through the guidance of the purge groove. This design not only improves the purging efficiency, but also further guarantees the cleanliness of the lens 210 area, thereby improving the shooting effect and accuracy of the thermal imager 200. At the same time, the existence of the first end cover 140 and the second end cover 150 also enhances the overall structural strength of the protective cover 100, making it more durable; it is also more convenient and fast to assemble the protective cabin.

[0041] Further, the air holes and the purge groove are designed in the form of a ring array layout, which can ensure uniform purging of the lens 210 area. This ring array distribution helps to form a continuous and uniform air flow field, effectively removing dust, stains or other impurities on the surface of the lens 210 that may affect the imaging quality. Through such uniform purging, the cleaning efficiency of the lens 210 can be improved, ensuring the clarity and imaging quality of the lens 210 in various environments.

[0042] Further, please refer to Figure 2The protective cover 100 is further provided with a lens 210 protection assembly; the lens 210 protection assembly comprises a transparent lens protection sheet 410 and a compression ring 420, the lens protection sheet 410 is sealed and fixed on the first end cover 140 through the compression ring 420 and covers the lens 210. The lens protection sheet 410 can provide an additional protective layer for the lens 210, prevent direct external impact or scratching, and prolong the service life of the lens 210. The design of the compression ring 420 ensures the close connection between the lens protection sheet 410 and the first end cover 140, effectively prevents dust, moisture or other pollutants from invading from the gap, and further improves the sealing performance of the protective cover 100 and the protection effect of the lens 210. At the same time, the transparent lens protection sheet 410 will not affect the normal shooting of the thermal imager 200, ensuring the clarity and accuracy of the shooting effect.

[0043] Further, the top of the protective cover 100 is further provided with a protective cover 160; the protective cover 160 is connected and fixed between the two sides of the screw and the outer cabin 110, and forms an accommodating space 162 between the protective cover 160 and the outer cabin 110.

[0044] Further, the protective cover 100 is further provided with a shutter cover automatic opening and closing mechanism; the shutter cover automatic opening and closing mechanism comprises a driving cylinder 510 and a shutter cover 520 connected with the piston rod 511 of the driving cylinder 510; the shutter cover 520 and the lens protection sheet 410 are provided with a gasket 531. The driving cylinder 510 is installed in the accommodating space 162 through a cylinder support 540.

[0045] In use, the driving cylinder 510 is started after receiving the signal, the piston rod 511 pushes the shutter cover 520 to move along the preset track, realizing the automatic opening or closing of the shutter cover 520. The setting of the gasket 531 ensures that the gap between the shutter cover 520 and the lens protection sheet 410 is uniform, avoiding damage to the lens protection sheet 410 due to friction or collision. When the shutter cover 520 is automatically opened, the lens 210 is exposed, allowing light to enter and shoot or observe; when the shutter cover 520 is automatically closed, the lens 210 can be effectively protected from the interference and damage of the external environment. This design not only improves the automation degree of the equipment, but also enhances the protection effect of the lens 210.

[0046] And in this embodiment, the shutter cover 520 is designed to reduce weight, which can reduce the vibration caused by the action of the shutter cover 520 to the protective cabin, and the opening and closing action is more smooth, and the noise generated when the opening and closing action is completed is small.

[0047] Further, the driving cylinder 510 is arranged in the accommodating space 162; the shutter cover 520 and the piston rod 511 of the driving cylinder 510 are fixedly connected through the bolt 532 and the double-stacked self-locking release washer; the double-stacked self-locking release washer is composed of two washers, and the outer side is provided with a radial relief surface, and the inner side is provided with a bevel surface; when the shutter cover 520 is opened and closed, the inner side bevel surfaces of the washers are engaged with each other to prevent the bolt 532 from loosening.

[0048] The driving cylinder 510 is further provided with a pair of magnetic proximity switches for detecting the position of the piston rod 511 of the driving cylinder 510, and triggering an alarm if the piston rod 511 does not reach the preset position. This helps the staff to find that the shutter cover 520 is not completely opened and closed in time, so as to avoid that the incomplete opening and closing of the shutter cover 520 causes the field of view of the thermal imager 200 to be blocked.

[0049] Further, the connector is a throttle valve 610; the throttle valve 610 is in communication with the purge gas channel 130; and the gas supply assembly 300 supplies gas to the purge gas channel 130 after being connected with the throttle valve 610.

[0050] Further, the inner cabin 120 is further provided with a circuit board 181 and an environment detection assembly arranged on the circuit board 181; the environment detection assembly is used for detecting the environment information in the protective cover 100; and the environment information includes temperature, humidity, pressure and position information.

[0051] The temperature, humidity, pressure and position sensors are integrated on the circuit board 181, and the signals of the sensors can be collected, and the time difference of the changes of the gas valve signal and the magnetic proximity switch signal can be recorded. This makes the integration of the protective cabin improved, the wiring reduced, the fault points reduced, the synchronous collection and processing of data realized, the space saved, the structure more compact, and the overall weight of the protective cabin reduced. When the sensors are upgraded or replaced, only the integrated circuit board 181 needs to be replaced, and the protective cabin does not need to be greatly modified.

[0052] Embodiment 2

[0053] Please see Figure 3 In this embodiment, a connector for a purge type infrared thermal imager protective cabin is provided, and through the connector, the driving cylinder 510 and the purge operation can be synchronously performed.

[0054] The connector includes a throttle valve 610, a heavy-duty connector male head 620, a first Luer head 630, and a second Luer head 640; the heavy-duty connector male head 620 and the first Luer head 630 are respectively in communication with the interior of the inner cabin 120; the second Luer head 640 is arranged on the protective cover 160 and connected with the throttle valve 610 and the driving cylinder 510 through a pneumatic control valve 650 and a gas pipe respectively; the outlet of the first Luer head 630 is connected with the inlet of the second Luer head 640 through a gas pipe; the throttle valve 610 is in communication with the purge gas channel 130; the gas supply assembly 300 supplies gas through the heavy-duty connector male head 620.

[0055] The Luer head is a metal Luer head and is connected by bending a plastic corrugated pipe into a U shape. The plastic corrugated pipe has the advantages of light weight, low cost, non-conductivity, better flexibility and easier bending.

[0056] The pneumatic control valve 650 is a two-position five-way valve and is arranged inside the protective cover 160 and mounted on the gas path support 162 of the fixed gas path. Compared with the two-position five-way valve of the previous generation of protective cabin, the two-position five-way valve is closer to the cylinder. The length of the gas path is reduced, thereby reducing the pressure loss of the gas flow in the pipe, helping to improve the working efficiency and response speed of the cylinder, reducing the cost of the gas pipe, reducing the connection points of the gas pipe, and reducing the risk of leakage.

[0057] The heavy-duty connector male head 620 is arranged on the second end cover 150, and gas pipes and electric wires are introduced through the heavy-duty connector male head 620 to improve the connection efficiency, facilitate the quick installation and arrangement of the on-site protective cabin, and facilitate quick maintenance and maintenance.

[0058] In this embodiment, the gas source is delivered by the gas supply assembly 300 to a pressure maintaining, filtering and other device through a gas pipe, enters the cabin body of the protective cover 100 through the heavy-duty connector male head 620, is guided by the gas pipe to pass through the first Luer head 630 and the second Luer head 640 to enter the protective cover 160, is then divided into two branch gas paths by the two-position five-way valve, and finally enters the protective cabin through the second Luer head 640 connected to the rear end of the protective cover 160. The two branch gas paths finally realize two functions, one is to control the driving cylinder 510, and the other is to blow off the dust on the lens protection sheet 410.

[0059] The two branch gas paths led by the two-position five-way valve are connected with the driving cylinder 510, control the movement of the piston rod 511 of the driving cylinder 510, and indirectly control the opening and closing of the shutter cover 520. One of the two branch gas paths is divided by a three-way joint, and the gas led by the three-way joint enters the purge gas channel 130 between the outer cabin 110 and the inner cabin 120 of the cabin body, and then enters the purge groove on the first end cover 140, thereby blowing off the dust on the lens protection sheet 410.

[0060] Please refer to Figure 4As shown in the figure, the arrows show the simple gas flow direction to achieve the purging function.

[0061] Embodiment 3

[0062] Please refer to Figure 2 In this embodiment, a universal support 710 for the protective cabin of the purging infrared thermal imager is provided; when the purging infrared thermal imager 200 protective cabin is in use, it may be deflected and displaced slightly due to the vibration of the equipment being monitored by the industrial field thermal imager 200 during operation. When repairing industrial equipment, the protective cabin may be deflected and displaced due to collision. The staff cannot restore the thermal imager 200 to its original position.

[0063] In combination Figure 2 As shown in the figure, the universal support 710 is composed of a rotating seat 712, a rotating shaft 713 and a base 711. The rotating seat 712 is designed with a scale with a division value of 5 degrees, supporting the protective cabin to rotate around the rotating shaft 713 within a range of 180 degrees, and supporting the protective cabin to swing vertically within a range of 180 degrees; the top of the rotating seat 712 is designed with a cross-shaped hole connected with a row of threaded holes on the bottom of the cabin body, supporting the protective cabin to move forward and backward in the horizontal direction; the rotating shaft 713 is a connecting piece for fixing the rotating seat 712 and the base 711; the base 711 is designed with an arc-shaped groove, supporting the protective cabin to rotate horizontally.

[0064] When in use, the staff can accurately adjust the position of the protective cabin according to the scale, ensuring the monitoring direction of the thermal imager 200 to be accurate. Through the connection of the cross-shaped hole on the rotating seat 712 and the threaded hole on the bottom of the cabin body, the staff can also easily fine-tune the angle of the protective cabin to adapt to different monitoring needs. The solid design of the rotating shaft 713 ensures the rotational connection between the rotating seat 712 and the base 711, so that the entire universal support 710 can withstand certain external forces and vibrations, ensuring the stability of the protective cabin. The arc-shaped groove design on the base 711 allows the protective cabin to be fixed after adjustment through the bolts 532 and nuts, further increasing the monitoring stability and flexibility of the thermal imager 200. When in use, the staff only needs to perform simple operations to realize multi-dimensional adjustment of the protective cabin, greatly improving work efficiency and monitoring accuracy.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the foregoing embodiments, or make equivalent substitutions for part or all of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A purge-type infrared thermal imager protection pod, characterized by, The application relates to a protective cover (100) comprising an outer cabin (110) and an inner cabin (120) and a purge gas channel (130) formed between the outer cabin (110) and the inner cabin (120); one end of the protective cover (100) is further provided with a gas hole in communication with the outside, and the gas hole is in communication with the purge gas channel (130); a thermal imager (200) is arranged in the protective cover (100), and a lens (210) of the thermal imager (200) is arranged at one end of the protective cover (100) provided with the gas hole; a gas supply assembly (300) is in communication with the purge gas channel (130) and the inner cabin (120) through a connector and delivers gas into the purge gas channel (130) for circulation; wherein the gas is sprayed out through the gas hole to realize active blowing of the lens (210) area. The protective cover (100) further comprises a first end cover (140) and a second end cover (150); the first end cover (140) and the second end cover (150) are respectively in sealing connection with two ends of the protective cover (100); the first end cover (140) is provided with a blowing groove in communication with the purge gas channel (130) and the gas hole to realize directional blowing of the lens (210) area. The gas hole and the blowing groove are both in annular array distribution to uniformly blow the lens (210) area. The protective cover (100) is further provided with a lens protection assembly; the lens protection assembly comprises a transparent lens protection sheet (410) and a compression ring (420), the lens protection sheet (410) is sealingly fixed on the first end cover (140) through the compression ring (420) and covers the lens (210). The protective cover (100) is further provided with a protective cover (160) on the top; the protective cover (160) is connected and fixed between the outer cabin (110) through screws arranged on two sides and forms a containing space (161) between the protective cover (160) and the outer cabin (110).

2. A purge-type infrared thermal imager protective pod according to claim 1, characterized in that, The protective cover (100) is further provided with a shutter cover automatic opening and closing mechanism; the shutter cover automatic opening and closing mechanism comprises a driving air cylinder (510) and a shutter cover (520) connected with a piston rod (511) of the driving air cylinder (510); a gasket (531) is arranged between the shutter cover (520) and the lens protection sheet (410). The driving air cylinder (510) is arranged in the containing space (161); the shutter cover (520) and the piston rod (511) of the driving air cylinder (510) are connected and fixed through a bolt (532) and a double-stacked self-locking release gasket combination; wherein the double-stacked self-locking release gasket is composed of two gaskets, the outer side is provided with a radial relief surface, and the inner side is a bevel gear surface; when the shutter cover (520) performs opening and closing actions, the inner side bevel gear surfaces of the gaskets are mutually engaged to prevent the bolt (532) from loosening. The connector is a throttle valve (610); the throttle valve (610) is in communication with the purge gas channel (130).

3. A purge-type infrared thermal imager containment pod according to claim 2, wherein, ​ 4. The purgeable infrared thermal imager containment pod of claim 2, wherein, ​ ​ 5. A purge-type infrared thermal imager containment pod according to claim 4, wherein, ​ ​ 6. A purge-type infrared thermal imager containment pod according to claim 5, wherein, ​ ​ ​ 7. A purge-type infrared thermal imager containment pod according to claim 6, wherein, ​ ​ ​ ​ 8. The purgeable infrared thermal imager containment pod of claim 1, wherein, ​ ​ The gas supply assembly (300) is connected with the throttle valve (610) to supply gas to the purge gas channel (130).

9. The purgeable infrared thermal imager containment pod of claim 6, wherein, The connector comprises a throttle valve (610), a heavy-duty connector male head (620), a first Luer head (630), and a second Luer head (640); The heavy-duty connector male head (620) and the first Luer head (630) are respectively in communication with the interior of the inner cabin (120); The second Luer head (640) is arranged on the protective cover (160) and is connected with the throttle valve (610) and the driving cylinder (510) through a gas pipe and a pneumatic control valve (650) respectively; The outlet of the first Luer head (630) is connected with the inlet of the second Luer head (640) through a gas pipe; The throttle valve (610) is in communication with the purge gas channel (130); and the gas supply assembly (300) supplies gas through the heavy-duty connector male head (620).

10. The purgeable infrared thermal imager containment pod of claim 1, wherein, The interior of the inner cabin (120) is further provided with a circuit board (181) and an environmental detection assembly arranged on the circuit board (181); The environmental detection assembly is used for detecting environmental information in the interior of the protective cover (100); and the environmental information comprises temperature, humidity, pressure, and position information.

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