CN118329787A - Detection window and detection device - Google Patents
Detection window and detection device Download PDFInfo
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- CN118329787A CN118329787A CN202410756420.6A CN202410756420A CN118329787A CN 118329787 A CN118329787 A CN 118329787A CN 202410756420 A CN202410756420 A CN 202410756420A CN 118329787 A CN118329787 A CN 118329787A
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- 238000001514 detection method Methods 0.000 title claims abstract description 164
- 238000007664 blowing Methods 0.000 claims abstract description 31
- 238000007789 sealing Methods 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims description 14
- 239000013307 optical fiber Substances 0.000 claims description 10
- 230000007423 decrease Effects 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 14
- 230000009286 beneficial effect Effects 0.000 description 7
- 238000004140 cleaning Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 3
- 239000003595 mist Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 238000002834 transmittance Methods 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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Abstract
The application discloses a detection window and a detection device, and belongs to the technical field of detection. The detection window comprises a light-transmitting plate and an air guide assembly, the air guide assembly is arranged at a detection opening of a cavity of the detection device and is in sealing connection with the cavity, the air guide assembly is provided with a detection hole, the light-transmitting plate is arranged in the detection hole, and the light-transmitting plate can be penetrated by detection waves at a receiving end of the detection device; the air guide assembly is further provided with an air inlet channel, the air inlet channel is arranged on the side portion of the detection hole, an inlet of the air inlet channel is used for being connected with the air blowing device, and an outlet of the air inlet channel faces towards one face of the light-transmitting plate, which faces away from the receiving end. In this scheme, the gas that blowing device provided can blow the light-passing board through inlet channel and deviate from the one side of receiving terminal to the one side that deviates from the receiving terminal at the light-passing board forms the air current, thereby can clear away the attached dust or fog etc. on the one side that the light-passing board was carried away from the receiving terminal, plays clean light-passing board's efficiency, and then avoids the light-passing board to influence the detection accuracy of receiving terminal.
Description
Technical Field
The application belongs to the technical field of detection, and particularly relates to a detection window and a detection device.
Background
In the detection industry, the detection accuracy of the receiving end of the detection device is crucial, so that the detection accuracy of the receiving end is generally guaranteed, a detection window is installed at a detection opening of a cavity of the detection device, dust and the like in the external environment are isolated, and the dust and the like are prevented from entering the cavity of the detection device to influence the detection accuracy of the receiving end.
However, in the long-term use process of the detection device, the cleanliness of the detection window also affects the detection accuracy, for example, dust or mist is easy to accumulate on the exposed side of the detection window, so that the transmittance of the detection window is reduced, and the detection accuracy of the receiving end of the detection device is further reduced.
Therefore, the existing detection device has the problem that the detection window is easy to influence the detection accuracy of the receiving end of the detection device.
Disclosure of Invention
The embodiment of the application aims to provide a detection window and a detection device, which can solve the problem that the detection accuracy of a receiving end of the detection device is easily affected by the detection window of the detection device in the related art.
In a first aspect, an embodiment of the present application provides a detection window, including a light-transmitting plate and an air guiding component, where the air guiding component is disposed at a detection port of a cavity of a detection device and is connected with the cavity in a sealing manner, the air guiding component is provided with a detection hole, the light-transmitting plate is disposed in the detection hole, and the light-transmitting plate is permeable to detection waves at a receiving end of the detection device;
The air guide assembly is further provided with an air inlet channel, the air inlet channel is arranged on the side portion of the detection hole, an inlet of the air inlet channel is used for being connected with the air blowing device, and an outlet of the air inlet channel faces towards one face, away from the receiving end, of the light-transmitting plate.
In a second aspect, an embodiment of the present application further provides a detection device, including a cavity, a detection optical fiber, and the detection window, where the detection optical fiber is disposed in the cavity and is used for receiving a detection wave reflected by a detected object, the cavity is provided with a detection port, an air guide component of the detection window is disposed at the detection port and is connected with the cavity in a sealing manner, and a light-transmitting plate of the detection window is located on a light path of the detection optical fiber and is used for transmitting the detection wave.
In the embodiment of the application, the air guide assembly is arranged at the detection port of the cavity of the detection device, the light-transmitting plate is arranged in the detection hole of the air guide assembly and positioned on the transmission path of the detection wave of the receiving end of the detection device, the light-transmitting plate can be used for transmitting the detection wave without influencing the detection performance of the receiving end, and the light-transmitting plate can play a role in preventing external dust and the like from entering the cavity, so that the dust in the surrounding environment is prevented from influencing the detection accuracy of the receiving end.
The air guide assembly is further provided with the air inlet channel, the outlet of the air inlet channel faces the light-transmitting plate to face away from the receiving end, namely, air provided by the air blowing device can be blown to the light-transmitting plate to face away from the receiving end through the air inlet channel, and air flow is formed on the light-transmitting plate to face away from the receiving end, so that dust, mist and the like attached to the light-transmitting plate on the face away from the receiving end can be removed, the effect of cleaning the light-transmitting plate is achieved, and the light-transmitting plate is prevented from affecting the detection accuracy of the receiving end.
Drawings
FIG. 1 is an exploded view of a detection window disclosed in an embodiment of the present application;
FIG. 2 is a perspective view of a detection window disclosed in an embodiment of the present application;
FIG. 3 is a top view of a detection window disclosed in an embodiment of the present application;
FIG. 4 is a cross-sectional view taken along the direction A-A in FIG. 3;
FIG. 5 is a side view of a detection window disclosed in an embodiment of the present application;
FIG. 6 is a cross-sectional view taken along the direction B-B in FIG. 5;
Fig. 7 is a diagram showing a positional relationship between a cavity and a detection window according to an embodiment of the present application.
Reference numerals illustrate:
100-cavity; 101-a detection port; 200-detection window; 210-an air guide pipe;
211-a first tube part; 212-a second tube portion; 213-annular protrusion; 2131-annular grooves;
214-an air inlet hole; 2141-a first intake hole; 2142-a second inlet hole; 2121-protrusions;
2122-blocking; 220-an air guide cover plate; 221-a fixing part; 222-an air guide part;
223-through holes; 230-a light-transmitting plate; 240-an intake passage; 250-pressing ring;
260-seals; 300-air inlet pipe.
Detailed Description
The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
The detection window and the detection device provided by the embodiment of the application are described in detail through specific embodiments and application scenes thereof with reference to the accompanying drawings.
Referring to fig. 1-7, a detection window 200 provided by an embodiment of the present application may include a light-transmitting plate 230 and an air guiding assembly, where the air guiding assembly may be disposed at a detection port 101 of a cavity 100 of a detection device and is connected with the cavity 100 in a sealing manner, the air guiding assembly may be provided with a detection hole, the light-transmitting plate 230 may be disposed in the detection hole, and the light-transmitting plate 230 may be permeable to a detection wave of a receiving end of the detection device. Here, the light-transmitting plate 230 is located on the transmission path of the detection wave of the receiving end, and the light-transmitting plate 230 can transmit the detection wave without affecting the detection performance of the receiving end, and the light-transmitting plate 230 can play a role in preventing external dust and the like from entering the cavity 100, thereby preventing the dust and the like of the surrounding environment from affecting the detection accuracy of the receiving end. It should be noted that the detection device may be applied to fields of near infrared detection, visible light detection, etc., and the receiving end of the detection device may be a detection optical fiber or other components with signal receiving function.
The air guide assembly can be further provided with an air inlet channel 240, the air inlet channel 240 can be arranged on the side portion of the detection hole, the inlet of the air inlet channel 240 is used for being connected with the air blowing device, the outlet of the air inlet channel 240 can face the light-transmitting plate 230 away from one face of the receiving end, namely, air provided by the air blowing device can be blown to the light-transmitting plate 230 through the air inlet channel 240 to face the light-transmitting plate 230 away from the receiving end, air flow can be formed on the face of the light-transmitting plate 230 away from the receiving end, and therefore dust, mist and the like attached to the face of the light-transmitting plate 230 away from the receiving end can be removed, the effect of cleaning the light-transmitting plate 230 is achieved, the transmittance of the light-transmitting plate 230 can be improved, and the detection accuracy of the receiving end is prevented from being influenced by the light-transmitting plate 230.
In this embodiment, the transparent plate 230 may be a glass plate, a lens, or a plate made of other material that can transmit the detection wave. Here, the detection wave may be infrared, ultraviolet, near infrared, near ultraviolet, or other detection waves.
In an alternative embodiment of the present application, the air intake passage 240 is disposed obliquely with respect to the axis of the detection hole, the outlet of the air intake passage 240 is located between the inlet of the air intake passage 240 and the light-transmitting plate 230, and the vertical distance between the outlet of the air intake passage 240 and the axis is smaller than the vertical distance between the inlet of the air intake passage 240 and the axis. In this way, the gas can be blown to the surface of the light-transmitting plate 230 away from the receiving end obliquely inwards, so that the gas can act on the light-transmitting plate 230 conveniently, the cleaning effect is improved, the gas can flow in the detection hole conveniently, and the gas can flow out of the detection hole conveniently with dust and the like.
In other embodiments, the intake passages 240 may extend in a radial direction of the air guide assembly.
In an alternative embodiment of the present application, the air guiding assembly may include an air guiding duct 210 and an air guiding cover plate 220, the air guiding duct 210 may include a first pipe portion 211 and a second pipe portion 212, the first pipe portion 211 is coaxially connected with the second pipe portion 212, and the first pipe portion 211 may be used for sealing connection with the cavity 100, and the light transmitting plate 230 may be disposed in a pipe cavity of the first pipe portion 211; the wind guiding cover plate 220 may be provided with a through hole 223, the through hole 223 may be coaxially communicated with the lumen of the first pipe portion 211, the wind guiding cover plate 220 may include a wind guiding portion 222 and a fixing portion 221, the fixing portion 221 may be coaxially connected with the wind guiding portion 222, and the fixing portion 221 may be connected with an end of the second pipe portion 212 far away from the first pipe portion 211, and at least a portion of the wind guiding portion 222 may extend into the lumen of the second pipe portion 212 and form an air inlet channel 240 with the second pipe portion 212. In this way, the air inlet channel 240 is formed by the separately arranged air guide pipe 210 and the air guide cover plate 220, and the air guide pipe 210 does not need to be perforated to form the air inlet channel 240, which is beneficial to simplifying the manufacturing process.
Here, the detection hole may include a lumen of the first tube part 211 and a through hole 223.
In the present embodiment, the fixing portion 221 may be connected to the second pipe portion 212 by a screw, or the fixing portion 221 may be bonded to an end of the second pipe portion 212 remote from the first pipe portion 211.
In other embodiments, the air guiding assembly may only include the air guiding pipe 210, the first pipe portion 211 of the air guiding pipe 210 is connected with the cavity 100 in a sealing manner, the light-transmitting plate 230 is disposed in the cavity of the first pipe portion 211, and the air inlet channel 240 may be disposed on the second pipe portion 212.
Alternatively, the first tube portion 211 may extend into the detection port 101 of the detection device, and an outer wall of the first tube portion 211 may be fitted with the cavity 100 of the detection device. Here, in order to prevent dust or the like from entering the cavity 100 from a gap between the first pipe portion 211 and the cavity 100, a sealing ring may be provided between the first pipe portion 211 and the cavity 100.
In addition, in order to improve the stability of the connection of the wind guide assembly with the cavity 100, the second pipe portion 212 may be connected with an end of the cavity 100 by a screw.
In an alternative embodiment, the air inlet passage 240 may have a ring-shaped structure, and the air inlet passage 240 may be disposed coaxially with the air guide duct 210. Thus, after entering the air inlet channel 240, the air is uniformly distributed in the air inlet channel 240 and uniformly blown to the light-transmitting plate 230, which is beneficial to increasing the area of the air acting on the surface of the light-transmitting plate 230 away from the receiving end, so that the cleaning effect on the light-transmitting plate 230 can be improved, and meanwhile, the unbalanced stress of the light-transmitting plate 230 can be prevented.
Of course, the intake passage 240 may not be provided in a ring-shaped structure.
In an alternative embodiment, the outer diameter of the air guiding portion 222 gradually decreases along the direction from the second pipe portion 212 to the first pipe portion 211, that is, the air guiding portion 222 is inclined toward the axis of the air guiding assembly, and the vertical distance between the air guiding portion 222 and the axis of the air guiding assembly gradually decreases along the direction from the second pipe portion 212 to the first pipe portion 211, so that the air guiding portion 222 can guide the air, so that the air moves in the direction close to the axis of the air guiding assembly, even if the air flows in the direction close to the detection hole, so that the air diffuses inward from the edge of the light transmitting plate 230, which is beneficial to improving the cleaning effect of the air on the light transmitting plate 230.
Of course, the outer diameter of the wind guide 222 may be unchanged along the direction from the second pipe portion 212 to the first pipe portion 211.
Optionally, along the direction from the second tube portion 212 to the first tube portion 211, the inner diameter of the second tube portion 212 gradually decreases, that is, the inner wall of the second tube portion 212 may incline toward the axis of the air guiding assembly, so that the inner wall of the second tube portion 212 may guide the air, so that the air moves in a direction close to the axis of the air guiding assembly, even if the air flows in a direction close to the detection hole, so that the air is further diffused inward from the edge of the light-transmitting plate 230, which is beneficial to further improving the cleaning effect of the air on the light-transmitting plate 230. Of course, the inner diameter of the second pipe portion 212 may be constant in the direction from the second pipe portion 212 to the first pipe portion 211.
In an alternative embodiment, the distance between the second pipe portion 212 and the air guide portion 222 is gradually increased in the direction from the second pipe portion 212 to the first pipe portion 211 so that the width of the air intake passage 240 is gradually increased. In this way, the width of the outlet of the air inlet channel 240 is advantageously increased, so that a larger coverage area is formed after the air flows out of the outlet of the air inlet channel 240, and thus, the area of the light-transmitting plate 230 facing away from the receiving end is advantageously increased, so that the cleaning effect is improved.
In other embodiments, the distance between the second pipe portion 212 and the air guiding portion 222 is constant along the direction from the second pipe portion 212 to the first pipe portion 211.
In an alternative embodiment of the present application, at least one air intake hole 214 may be provided on the second pipe portion 212, the air intake hole 214 may be located at a side of the air intake passage 240 remote from the through hole 223, the air intake hole 214 may be used to connect with the blowing device, and an end of the air intake hole 214 remote from the first pipe portion 211 may be in communication with the air intake passage 240.
Here, in a manner that the air blowing device is connected to the air inlet passage 240 by providing the air inlet hole 214 on the second pipe portion 212, the second pipe portion 212 is relatively larger in size than the air inlet hole 214 is provided on the fixing portion 221 of the air guide cover 220, so that the air inlet hole 214 is conveniently provided; when the air intake holes 214 are provided on the second pipe portion 212, the accuracy of the air intake holes 214 is less likely to be affected by the assembly error than in the manner in which the air intake holes 214 are formed between the fixing portion 221 and the end of the second pipe portion 212 remote from the first pipe portion 211, and thus the requirements are more likely to be satisfied.
In other embodiments, the second pipe portion 212 may not have the air inlet hole 214, the air inlet hole 214 may be disposed on the fixing portion 221 of the air guiding cover 220, or the air inlet hole 214 may be formed between the fixing portion 221 and an end of the second pipe portion 212 away from the first pipe portion 211.
In an alternative embodiment, the second pipe portion 212 may be provided with a protrusion 2121, the protrusion 2121 may protrude from the first pipe portion 211 in a direction from an inner wall to an outer wall of the second pipe portion 212, and the air intake hole 214 may be provided on the protrusion 2121. Thus, the air inlet hole 214 can be formed only by punching the protruding portion 2121, and the air inlet hole 214 is formed without punching both the first pipe portion 211 and the second pipe portion 212 and communicating the two holes, so that the structure of the air inlet hole 214 is facilitated to be simplified, and the protruding portion 2121 protrudes from the first pipe portion 211, so that the air inlet hole 214 is facilitated to be connected with the air blowing device when the air blowing device is arranged outside the cavity 100.
Of course, the second pipe portion 212 may not be provided with the convex portion 2121, and the outer diameter of the second pipe portion 212 may coincide with the outer diameter of the first pipe portion 211, and the air intake hole 214 may be provided obliquely on the second pipe portion 212, or the first pipe portion 211 may be provided with a through hole communicating with the air intake hole 214, the through hole being connected to the air blowing device.
Alternatively, the air intake hole 214 may include a first air intake hole 2141 and a second air intake hole 2142, the first air intake hole 2141 may be parallel to the axis of the air guide duct 210, the second air intake hole 2142 may extend in the radial direction of the air guide duct 210 and be disposed near the fixing portion 221, and at least one of one end of the first air intake hole 2141 and one end of the second air intake hole 2142 may be used to connect with the air blowing device, and the other end of the first air intake hole 2141 may communicate with the air intake channel 240 through the second air intake hole 2142. In this way, one end of the first air inlet hole 2141 and one end of the second air inlet hole 2142 may be connected to the air blowing device, and in the process of using the detection device, the air blowing device may be connected to one end of the first air inlet hole 2141 or one end of the second air inlet hole 2142 according to actual needs, or the air blowing device may be connected to one end of the first air inlet hole 2141 and one end of the second air inlet hole 2142 at the same time, and in any case, the air may enter the air inlet channel 240 through the second air inlet hole 2142. It follows that this arrangement is more convenient for the operator to connect the blowing device according to the actual situation. In addition, the first air inlet 2141 is not required to be obliquely arranged in the embodiment, and processing is facilitated.
Here, in order to allow one end of the second air intake hole 2142 to be connected to the blowing device, and in order to facilitate the processing, the second air intake hole 2142 may be penetrated through the second pipe portion 212 in the radial direction of the air guide pipe 210. Since the end of the first air intake 2141 far from the air intake passage 240 and the end of the second air intake 2142 far from the air intake passage 240 are both of an open structure, when only one of the first air intake 2141 and the second air intake 2142 is connected with the air blowing device, in order to prevent the air from being discharged from the end of the other far from the air intake passage 240 and not entering the air intake passage 240, a blocking piece 2122 may be provided at the end of the other far from the air intake passage 240, so that the air can only enter the air intake passage 240. Specifically, when the first air intake 2141 is connected to the air blowing device, a stopper 2122 may be disposed at an end of the second air intake 2142 away from the air intake passage 240, and the stopper 2122 may block an end of the second air intake 2142 away from the air intake passage 240; when the second air intake 2142 is connected to the air blowing device, a blocking piece 2122 may be disposed at an end of the first air intake 2141 away from the air intake channel 240, and the blocking piece 2122 may block an end of the first air intake 2141 away from the air intake channel 240.
In the present embodiment, an air intake pipe 300 may be provided in at least one of the first air intake hole 2141 and the second air intake hole 2142, and the air intake pipe 300 may be connected to an air blowing device.
Of course, the air intake hole 214 may include only the first air intake hole 2141, and the first air intake hole 2141 may be inclined through the second pipe portion 212, with an end of the first air intake hole 2141 near the fixing portion 221 communicating with the air intake passage 240.
In an alternative embodiment, an annular protrusion 213 may be disposed on an inner wall of the first tube portion 211, where the annular protrusion 213 may be disposed coaxially with the first tube portion 211, and the annular protrusion 213 may be disposed near the second tube portion 212, and the annular protrusion 213 may be in a limiting fit with the light-transmitting plate 230, that is, the annular protrusion 213 performs a limiting function on the light-transmitting plate 230, so as to limit the light-transmitting plate 230 to move in a direction near the air guiding cover plate 220.
The inspection window 200 may further include a pressing ring 250, the pressing ring 250 may be disposed in the lumen of the first tube portion 211, and the pressing ring 250 may be located at a side of the light-transmitting plate 230 away from the second tube portion 212, and the pressing ring 250 may be used to press the light-transmitting plate 230 against the annular protrusion 213. Thus, the light-transmitting plate 230 can be fixed to the first tube part 211 by the clamping action of the pressing ring 250 and the annular protrusion 213 on the light-transmitting plate 230. At this time, the lumen of the first tube part 211 described above refers to the space formed by the inner annular surface of the pressing ring 250, that is, the detection hole includes the space formed by the inner annular surface of the pressing ring 250 and the through hole 223.
Here, the pressing ring 250 is disposed at a side of the light-transmitting plate 230 away from the second pipe portion 212 and is connected to the inner wall of the first pipe portion 211, so that the pressing ring 250 may perform a certain sealing function, and dust and the like may be prevented from entering the light-transmitting plate 230 from a gap between the light-transmitting plate 230 and the inner wall of the first pipe portion 211 to a side of the light-transmitting plate 230 away from the second pipe portion 212.
In other embodiments, the side wall of the light-transmitting plate 230 may be adhered to the inner wall of the first tube portion 211, or the side wall of the light-transmitting plate 230 may be clamped to the inner wall of the first tube portion 211.
Alternatively, in order to prevent dust or the like from entering from a gap between the light-transmitting plate 230 and the first tube portion 211 to a side of the light-transmitting plate 230 near the receiving end, a seal 260 may be provided between the annular projection 213 and the light-transmitting plate 230. Specifically, an annular groove 2131 may be disposed on a surface of the annular protrusion 213 facing the light-transmitting plate 230, the annular groove 2131 and the annular protrusion 213 may be coaxially disposed, the sealing member 260 may be a sealing ring, and a portion of the sealing ring may be embedded in the annular groove 2131 to prevent the sealing ring from being separated from between the light-transmitting plate 230 and the annular protrusion 213.
Of course, the sealing member 260 may not be provided between the annular protrusion 213 and the light-transmitting plate 230.
Based on the detection window 200 provided in the embodiment of the present application, the embodiment of the present application further provides a detection device, where the detection device may include the cavity 100, the detection optical fiber, and the detection window 200 described in any of the foregoing embodiments. The detection optical fiber can be arranged in the cavity 100 and can be used for receiving detection waves reflected by the detected objects, the cavity 100 can be provided with a detection port 101, the air guide component of the detection window 200 can be arranged at the detection port 101 and is in sealing connection with the cavity 100, the light-transmitting plate 230 of the detection window 200 can be positioned on the light path of the detection optical fiber, and the light-transmitting plate 230 can be used for transmitting the detection waves.
The beneficial effects achieved by the detection device provided by the embodiment of the present application are consistent with the beneficial effects achieved by the detection window 200 provided by the embodiment of the present application, and will not be described herein.
In an alternative embodiment of the present application, the detecting means may further include a blowing means, which may be provided on the chamber 100, and which may communicate with an inlet of the gas inlet passage 240 of the detecting window 200 to supply gas to the gas inlet passage 240. Here, the blowing device is provided on the chamber 100, and may be conveniently connected to the air inlet passage 240. Of course, the blowing device may not be provided on the chamber 100.
In this embodiment, the air blowing device may be an air pump.
Alternatively, the air blowing device may be disposed in the cavity 100, so that the air blowing device is prevented from being exposed, which is beneficial to improving the aesthetic property of the detection device.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.
Claims (14)
1. The detection window is characterized by comprising a light-transmitting plate (230) and an air guide assembly, wherein the air guide assembly is arranged at a detection port (101) of a cavity (100) of a detection device and is in sealing connection with the cavity (100), the air guide assembly is provided with a detection hole, the light-transmitting plate (230) is arranged in the detection hole, and the light-transmitting plate (230) can be penetrated by detection waves at a receiving end of the detection device;
The air guide assembly is further provided with an air inlet channel (240), the air inlet channel (240) is arranged on the side portion of the detection hole, an inlet of the air inlet channel (240) is used for being connected with an air blowing device, and an outlet of the air inlet channel (240) faces towards one face, away from the receiving end, of the light-transmitting plate (230).
2. The detection window according to claim 1, characterized in that the air inlet channel (240) is arranged obliquely with respect to the axis of the detection hole, the outlet of the air inlet channel (240) is located between the inlet of the air inlet channel (240) and the light-transmitting plate (230), and the vertical distance between the outlet of the air inlet channel (240) and the axis is smaller than the vertical distance between the inlet of the air inlet channel (240) and the axis.
3. The inspection window of claim 1, wherein the air guide assembly comprises:
The air guide pipe (210) comprises a first pipe part (211) and a second pipe part (212) coaxially connected with the first pipe part (211), the first pipe part (211) is used for being connected with the cavity (100) in a sealing mode, and the light-transmitting plate (230) is arranged in the pipe cavity of the first pipe part (211);
The air guide cover plate (220) is provided with a through hole (223) coaxially communicated with the pipe cavity of the first pipe part (211), the air guide cover plate (220) comprises an air guide part (222) and a fixing part (221) coaxially connected with the air guide part (222), the fixing part (221) is connected with one end, far away from the first pipe part (211), of the second pipe part (212), and at least part of the air guide part (222) stretches into the pipe cavity of the second pipe part (212) and forms an air inlet channel (240) with the second pipe part (212);
The detection hole comprises a lumen of the first tube portion (211) and the through hole (223).
4. A detection window according to claim 3, characterized in that the air inlet channel (240) is of annular structure and that the air inlet channel (240) is arranged coaxially with the air guiding duct (210).
5. A detection window according to claim 3, characterized in that the outer diameter of the air guiding portion (222) gradually decreases in the direction from the second tube portion (212) to the first tube portion (211).
6. A detection window according to claim 3, characterized in that the inner diameter of the second tube portion (212) gradually decreases in the direction from the second tube portion (212) to the first tube portion (211).
7. A detection window according to claim 3, characterized in that the distance between the second pipe portion (212) and the air guiding portion (222) is gradually increased in the direction from the second pipe portion (212) to the first pipe portion (211), so that the width of the air intake passage (240) is gradually increased.
8. A detection window according to claim 3, characterized in that at least one air inlet hole (214) is provided in the second pipe portion (212), the air inlet hole (214) is located at a side of the air inlet channel (240) away from the through hole (223), the air inlet hole (214) is used for being connected with the air blowing device, and one end of the air inlet hole (214) away from the first pipe portion (211) is communicated with the air inlet channel (240).
9. The detection window according to claim 8, characterized in that the second pipe portion (212) is provided with a protrusion (2121), the protrusion (2121) protrudes from the first pipe portion (211) in a direction from an inner wall to an outer wall of the second pipe portion (212), and the air intake hole (214) is provided on the protrusion (2121).
10. The detection window according to claim 8, wherein the air intake hole (214) includes a first air intake hole (2141) and a second air intake hole (2142), the first air intake hole (2141) is parallel to the axis of the air guide pipe (210), the second air intake hole (2142) extends in the radial direction of the air guide pipe (210) and is disposed near the fixing portion (221), and at least one of one end of the first air intake hole (2141) and one end of the second air intake hole (2142) is used for connection with the air blowing device, and the other end of the first air intake hole (2141) communicates with the air intake passage (240) through the second air intake hole (2142).
11. A detection window according to claim 3, characterized in that an annular protrusion (213) is provided on the inner wall of the first tube part (211), the annular protrusion (213) being arranged coaxially with the first tube part (211) and the annular protrusion (213) being arranged close to the second tube part (212);
The detection window (200) further comprises a pressing ring (250), the pressing ring (250) is arranged in the pipe cavity of the first pipe portion (211) and is located at one side, far away from the second pipe portion (212), of the light-transmitting plate (230), and the pressing ring (250) is used for pressing the light-transmitting plate (230) onto the annular protrusion (213).
12. The detection window according to claim 11, characterized in that a seal (260) is provided between the annular protrusion (213) and the light-transmitting plate (230).
13. The detection device is characterized by comprising a cavity (100), a detection optical fiber and the detection window (200) according to any one of claims 1-12, wherein the detection optical fiber is arranged in the cavity (100) and is used for receiving detection waves reflected by a detected object, the cavity (100) is provided with a detection port (101), an air guide component of the detection window (200) is arranged at the detection port (101) and is in sealing connection with the cavity (100), and a light-transmitting plate (230) of the detection window (200) is positioned on a light path of the detection optical fiber and is used for transmitting the detection waves.
14. The detection device according to claim 13, characterized in that it further comprises an air blowing device arranged on the cavity (100) and communicating with the inlet of the air inlet channel (240) of the detection window (200).
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| CN202410756420.6A CN118329787B (en) | 2024-06-12 | Detection window and detection device |
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| CN202410756420.6A CN118329787B (en) | 2024-06-12 | Detection window and detection device |
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| CN118329787B CN118329787B (en) | 2024-09-27 |
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