Air pipe opening air speed observation device

Abstract

The utility model discloses a structure schematic diagram of an air pipe orifice wind speed observation device, the air pipe orifice wind speed observation device is connected to a pipe orifice of a fan air pipe and comprises a connecting piece and a sliding body, the connecting piece is arranged in the pipe orifice of the fan air pipe and is detachably connected with the fan air pipe, and the sliding body is arranged opposite to an observation window. The sliding body is arranged in the fan air pipe in a sleeved mode along the guiding sliding of the connecting piece, and when gas in the fan air pipe flows through the sliding body, the flowing path of the gas flowing through the upper portion of the sliding body is larger than the flowing path of the gas flowing through the lower portion of the sliding body. Therefore, lift force for pushing the sliding body to rise to different heights relative to the connecting piece is formed when gas flows through the sliding body. The device can effectively solve the problem that the wind speed of air in the fan can be obtained only through data calculation according to the time and the flow recorded by the detection device and the flow sensor, so that the feedback of the wind speed in the air pipe is not visual.

Description

Technical Field

[0001] This utility model relates to the field of industrial fan technology, specifically to a wind speed observation device at the inlet of a duct. Background Technology

[0002] Industrial fans are mainly composed of impellers, casings, inlet collectors, guide vanes, motors, and other components. Visual devices are usually installed at the environmental exhaust pipe outlets to facilitate production operations.

[0003] For example, Chinese invention patent CN113550927A, entitled "An Industrial Fan with Visualized Wind Speed," includes a fan body and a detection device. The fan body comprises a fan casing and fan blades installed inside the casing. The left and right sides of the fan casing are connected to an inlet duct and an outlet duct, respectively. The detection device includes a device casing, a wind vane, a pressure sensor, and a signal processor. The pressure sensor is installed on the inner wall of the device casing, and a horizontal spring is provided between the pressure sensor and the side of the wind vane. This device visualizes the air speed inside the industrial fan, allowing operators to promptly detect changes in the fan's rotational speed, reducing the fan's operating time under high loads, and extending its service life. However, this device requires the detection device and flow sensor to record the airflow time and flow rate in the outlet duct, and the air speed inside the fan is calculated through data, making the feedback on air speed not intuitive.

[0004] Therefore, there is an urgent need for a duct inlet wind speed observation device to solve the problem that the existing technology requires the time and flow recorded by the detection device and flow sensor and the wind speed inside the fan to be calculated, which makes the feedback on the wind speed inside the duct not intuitive. Utility Model Content

[0005] The purpose of this utility model is to overcome the above-mentioned technical deficiencies and propose a duct inlet wind speed observation device to solve the technical problem that the wind speed inside the fan can only be obtained by relying on the time and flow recorded by the detection device and flow sensor and by calculating the data, which leads to the unintuitive feedback on the wind speed inside the duct.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution:

[0007] This utility model provides a duct inlet wind speed observation device, connected to the inlet of a fan duct, characterized in that it includes:

[0008] A connector, built into the inlet of the fan duct, and detachably connected to the fan duct; and

[0009] A sliding body is positioned relative to the observation window and is built into the fan duct. The sliding body is slidably fitted onto the connector along the guide of the connector. When the gas in the fan duct flows through the sliding body, the flow path of the gas above the sliding body is greater than the flow path below the sliding body, so that when the gas flows through the sliding body, it generates a lift force that pushes the sliding body relative to the connector to different heights.

[0010] In some embodiments, the connector includes a connecting rod and two connecting portions. The connecting rod is vertically arranged along the diameter direction of the fan duct and is built into the fan duct. The two connecting portions are respectively disposed at both ends of the connecting rod. The connecting portions are connected to the connecting rod and are detachably connected to the fan duct.

[0011] In some embodiments, the fan duct has an installation hole that penetrates the opposite side walls of the fan duct. The connecting part includes a connecting nut. The connecting rod is inserted into the installation hole, and both ends of the connecting rod are respectively externally placed on the fan duct. Both ends of the connecting rod have external threads. The two connecting nuts are respectively threaded to the two ends of the connecting rod and abut against the outer side wall of the fan duct.

[0012] In some embodiments, the connecting part further includes a sealing gasket, which is disposed between the connecting nut and the outer wall of the fan duct and sleeved on the connecting rod, with both ends of the sealing gasket abutting against the outer wall of the connecting nut and the fan duct, respectively.

[0013] In some embodiments, the sliding body is sheet-shaped and has a sliding hole. The sliding body is slidably fitted onto the connecting rod through the sliding hole, and the diameter of the sliding hole is larger than the diameter of the connecting rod.

[0014] In some embodiments, the sliding body includes a delta airfoil portion, which is in the shape of an equilateral triangle and has a windward tip and a leeward end. The thickness of the windward tip and the leeward end of the delta airfoil portion gradually increases in a direction that approaches each other, and a transition arc surface is formed at the top of the windward tip and the leeward end of the delta airfoil portion, respectively.

[0015] In some embodiments, the slider further has a connecting bottom, which is configured to fit the shape of the airfoil and is connected to the lower part of the airfoil, and the area of ​​the connecting bottom is larger than the area of ​​the delta airfoil.

[0016] In some embodiments, the bottom of the connection has an opening, which is located between the leeward ends of the two delta airfoils, and the opening gradually increases in size along the leeward end away from the delta airfoil.

[0017] In some embodiments, the connecting rod is formed with a plurality of observation segments along its height direction, and the surfaces of the plurality of observation segments are respectively provided with a plurality of first coatings, and the colors of the plurality of first coatings are different from each other.

[0018] In some embodiments, the surface of the slider is provided with a second coating, and the second coating and the plurality of first coatings are all of different colors.

[0019] Compared with the prior art, the beneficial effects of the wind speed observation device at the duct outlet provided by this utility model include: a connector that is detachably connected to the fan duct is provided inside the fan duct; a sliding body is slidably sleeved on the connector along the guide of the connector; and when the gas in the fan duct flows through the sliding body, the flow path of the gas above the sliding body is greater than the flow path below the sliding body, so that when the gas flows through the sliding body, it generates a lift force that pushes the sliding body relative to the connector to different heights. Compared to existing technologies, a sliding body is installed at the inlet of the fan duct, which can slide along the guide of the connector. When the gas in the fan duct flows over the surface of the sliding body, the flow path of the gas above the sliding body is greater than the flow path below the sliding body. This generates an upward thrust that pushes the sliding body upward relative to the connector. The magnitude of the upward thrust varies with the air velocity in the fan duct, resulting in different heights to which the sliding body rises. Therefore, the height to which the sliding body rises can intuitively reflect the air velocity in the fan duct. This solves the technical problem in existing technologies where the air velocity in the fan is not intuitive because it requires the time and flow rate recorded by the detection device and flow sensor and is calculated from the data. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of a wind speed observation device at the inlet of a duct provided in an embodiment of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure connecting the fan duct, connecting rod, and connecting part according to an embodiment of the present utility model;

[0022] Figure 3 This is a structural schematic diagram from another perspective of the connection between the fan duct and the connecting rod and the connecting part provided in this embodiment of the utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the sliding body provided in an embodiment of the present invention;

[0024] Figure 5 This is a cross-sectional view of the sliding body provided in an embodiment of the present invention;

[0025] Figure 6 This is a structural schematic diagram of the slider provided in another embodiment of the present invention.

[0026] Explanation of reference numerals in the attached figures:

[0027] 1. Fan duct; 2. Connector; 21. Connecting rod; 22. Connecting part; 221. Connecting nut; 222. Sealing gasket; 3. Sliding body; 31. Triangular airfoil part; 311. Windward tip; 312. Leeward end; 313. Transition arc surface; 32. Connecting bottom. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] To address the technical problem that the air velocity inside the fan requires calculation based on the time and flow rate recorded by the detection device and flow sensor, resulting in an unintuitive feedback on the air velocity in the duct, this invention provides an air velocity observation device at the duct inlet. This device enables the gas to flow over the surface of the sliding body 3 within the fan duct 1. The flow path of the gas above the sliding body 3 is greater than the flow path below it, generating an upward thrust that pushes the sliding body 3 upward relative to the connecting member 2. Furthermore, the magnitude of this upward thrust varies with the air velocity inside the fan duct 1, resulting in different upward sliding heights of the sliding body 3. Therefore, the height to which the sliding body 3 rises directly reflects the air velocity inside the fan duct 1.

[0030] It should be noted that the duct inlet wind speed observation device of this utility model is used in, but not limited to, the field of industrial fan technology. For ease of explanation, this utility model only uses the application of the duct inlet wind speed observation device in the field of industrial fan technology as an example for explanation. The principle of the duct inlet wind speed observation device applied to other types of equipment is essentially the same as the principle applied to the field of industrial fan technology, and will not be described in detail here.

[0031] Please see Figures 1 to 6 , Figure 1This is a schematic diagram of the structure of the duct inlet wind speed observation device in one embodiment of the present invention. The duct inlet wind speed observation device is connected to the inlet of the fan duct 1 and includes a connector 2 and a sliding body 3. The connector 2 is vertically arranged along the diameter direction of the fan duct 1 and is built into the inlet of the fan duct 1 and is detachably connected to the fan duct 1. The sliding body 3 is arranged opposite the observation window and is built into the fan duct 1. The sliding body 3 is slidably sleeved on the connector 2 along the guide of the connector 2. When the gas in the fan duct 1 flows through the sliding body 3, the flow path of the gas above the sliding body 3 is greater than the flow path below the sliding body 3, so that when the gas flows through the sliding body 3, it forms a lift force that pushes the sliding body 3 relative to the connector 2 to different heights.

[0032] In this device, a connector 2 is provided inside the fan duct 1 and is detachably connected to the fan duct 1. The sliding body 3 is slidably sleeved on the connector 2 along the guide of the connector 2. When the gas in the fan duct 1 flows through the sliding body 3, the flow path of the gas above the sliding body 3 is greater than the flow path below the sliding body 3, so that when the gas flows through the sliding body 3, it generates a lift force that pushes the sliding body 3 relative to the connector 2 to different heights.

[0033] Compared to existing technologies, a sliding body 3 is provided at the inlet of the fan duct 1, which can slide along the guide of the connector 2. When the gas in the fan duct 1 flows over the surface of the sliding body 3, the flow path of the gas above the sliding body 3 is greater than the flow path below the sliding body 3. This generates an upward thrust that pushes the sliding body 3 upward relative to the connector 2. The magnitude of the upward thrust varies with the wind speed of the gas in the fan duct 1, resulting in different heights to which the sliding body 3 rises. Therefore, the wind speed of the gas in the fan duct 1 can be intuitively reflected by the height of the sliding body 3. This solves the technical problem in existing technologies where the wind speed of the air in the fan needs to be calculated based on the time and flow recorded by the detection device and flow sensor, resulting in an unintuitive feedback on the wind speed in the duct.

[0034] Furthermore, the observation window here is made of transparent material to facilitate the user's observation of the production process. This observation window is a common and already purchased piece of equipment on the market, and is a standard feature known to those skilled in the art, so it will not be described in detail further.

[0035] In this embodiment, as Figure 3 As shown, the connector 2 includes a connecting rod 21 and two connecting parts 22. The connecting rod 21 is vertically arranged along the diameter direction of the fan duct 1 and is built into the fan duct 1. The two connecting parts 22 are respectively arranged at both ends of the connecting rod 21. The connecting parts 22 are connected to the connecting rod 21 and are detachably connected to the fan duct 1.

[0036] Two connecting parts 22 form a detachable connection between the connecting rod 21 and the side wall of the fan duct 1.

[0037] In one embodiment, Figure 3 As shown, the fan duct 1 has an installation hole that penetrates the opposite side walls of the fan duct 1. The connecting part 22 includes a connecting nut 221. The connecting rod 21 is inserted into the installation hole, and both ends of the connecting rod 21 are respectively externally placed on the fan duct 1. Both ends of the connecting rod 21 are respectively provided with external threads. The two connecting nuts 221 are respectively threaded to the two ends of the connecting rod 21 and abut against the outer side wall of the fan duct 1.

[0038] The two ends of the connecting rod 21 are respectively connected to the side wall of the fan duct 1 by connecting threads.

[0039] Furthermore, the connecting nut 221 here is a common and readily available device on the market, and is a conventional setting known to those skilled in the art. The two ends of the connecting rod 21 here can also be connected to the side wall of the fan duct 1 by means of elastic snap-fit, such as the flexible connection between the connecting part 22 and the connecting rod 21. The side wall of the fan duct 1 is provided with a slot, and the connecting part 22 is elastically snapped into the slot. Further details will not be elaborated here.

[0040] In one embodiment, Figure 3 As shown, the connecting part 22 also includes a sealing gasket 222, which is disposed between the connecting nut 221 and the outer wall of the fan duct 1, and is sleeved on the connecting rod 21. The two ends of the sealing gasket 222 are respectively pressed against the connecting nut 221 and the outer wall of the fan duct 1.

[0041] The sealing gasket 222 is placed between the connecting nut 221 and the outer wall of the fan duct 1 to provide a sealing connection and reduce the loss of gas or wind speed in the fan duct 1.

[0042] Furthermore, the sealing gasket 222 here is a common and readily available elastic sealing gasket 222 ring on the market, which is a conventional setting known to those skilled in the art, and will not be described in detail here.

[0043] In this embodiment, as Figures 4 to 6 As shown, the sliding body 3 is plate-shaped and has a sliding hole. The sliding body 3 is slidably sleeved on the connecting rod 21 through the sliding hole, and the diameter of the sliding hole is larger than the diameter of the connecting rod 21.

[0044] The connecting rod 21 and the sliding body 3 are slidably connected through a sliding hole.

[0045] Furthermore, the diameter of the sliding hole here is larger than the diameter of the connecting rod 21, in order to ensure that the sliding body 3 can slide smoothly relative to the guide of the connecting rod 21.

[0046] In this embodiment, as Figure 4 As shown, the sliding body 3 includes a triangular airfoil portion 31 connected to the bottom 32.

[0047] The delta airfoil 31 is in the shape of an equilateral triangle and has a windward tip 311 and a leeward end 312. The thickness of the windward tip 311 and the leeward end 312 of the delta airfoil 31 gradually increases in the direction of mutual approach, and a transition arc surface 313 is formed at the top of the windward tip 311 and the leeward end 312 of the delta airfoil 31.

[0048] The bottom of the delta airfoil 31 is flat, and the top is formed with a transition arc surface 313, so that the thickness of the windward tip 311 and the leeward end 312 of the delta airfoil 31 gradually increases in the direction of mutual approach, so that when the gas flows through the top surface and the bottom surface of the delta airfoil 31, a pressure difference can be formed, thereby generating an upward thrust that pushes the sliding body 3 upward.

[0049] In one embodiment, such as Figures 4 to 6 As shown, the bottom 32 is designed to match the shape of the airfoil and is connected to the bottom of the airfoil. The area of ​​the bottom 32 is larger than the area of ​​the delta airfoil 31.

[0050] The area of ​​the bottom 32 is larger than the area of ​​the delta airfoil 31, which increases the contact area between the bottom of the delta airfoil 31 and the gas, thereby enhancing the upward thrust generated when the gas flows through the top and bottom surfaces of the delta airfoil 31.

[0051] In one embodiment, such as Figure 4 As shown, the bottom 32 has an opening, which is located between the leeward ends 312 of the two delta airfoils 31, and the opening gradually increases in size along the leeward ends 312 away from the delta airfoils 31.

[0052] An opening is provided on the bottom 32 to reduce its own weight and improve the effect of upward thrust.

[0053] Furthermore, both the delta airfoil 31 and the connecting bottom 32 are made of lightweight materials that are commonly available and readily procurable on the market. This is a conventional arrangement known to those skilled in the art and will not be described in detail here.

[0054] In one embodiment, the connecting rod 21 has a plurality of observation segments formed along its height direction, and the surfaces of the plurality of observation segments are respectively provided with a plurality of first coatings, and the colors of the plurality of first coatings are different from each other.

[0055] By setting different colored observation segments at different heights of the connecting rod 21, the magnitude of the wind speed inside the fan duct 1 can be intuitively displayed.

[0056] In one embodiment, the surface of the slider 3 is provided with a second coating, and the second coating and the plurality of first coatings are all different in color.

[0057] By setting a second coating with a different color from the first coating, it becomes easier for users to observe.

[0058] Furthermore, both the first and second coatings here are common and readily available pigments or paints on the market. This is a standard setup known to those skilled in the art and will not be described in detail here.

[0059] To better understand this utility model, the following is combined with... Figures 1 to 6 The technical solution of this utility model is described in detail below:

[0060] A connector 2 is detachably connected to the fan duct 1. A sliding body 3 is slidably fitted onto the connector 2 along its guide. When gas flows through the sliding body 3 in the fan duct 1, the flow path above the sliding body 3 is longer than the flow path below it, creating a lift force that pushes the sliding body 3 relative to the connector 2 to different heights. Compared to existing technologies, this design features a sliding body 3 at the inlet of the fan duct 1 that can slide along the guide of the connector 2. When gas flows through the surface of the sliding body 3 in the fan duct 1, the flow path above the sliding body 3 is longer than the flow path below it, generating a lifting thrust that pushes the sliding body 3 upward relative to the connector 2. The magnitude of this lifting thrust varies with the gas velocity in the fan duct 1, resulting in different heights to which the sliding body 3 rises. Therefore, the height to which the sliding body 3 rises directly reflects the gas velocity in the fan duct 1.

[0061] In the specific working process of this utility model, the user first places the sliding body 3 inside the fan duct 1 and sets it relative to the observation window. Then, the connecting rod 21 is inserted into the mounting hole and passes through the sliding hole. Next, two connecting nuts 221 and sealing gaskets 222 are respectively placed on both ends of the connecting rod 21 and the connecting nuts 221 are screwed on tightly, so that the connecting nuts 221, sealing gaskets 222 and the outer wall of the fan duct 1 are pressed together. Finally, the fan is started, and the gas flows through the surface of the triangular airfoil part 31 and the connecting bottom 32, generating an upward thrust that pushes the sliding body 3 to slide relative to the connecting rod 21. The different wind speeds in the fan duct 1 can push the sliding body 3 to rise to different heights relative to the connecting rod 21.

[0062] This device, through the aforementioned structure, can solve the technical problem in the prior art where the air velocity inside the fan needs to be calculated based on the time and flow recorded by the detection device and flow sensor, resulting in an unintuitive feedback on the magnitude of the air velocity inside the duct.

[0063] The specific embodiments of this utility model described above do not constitute a limitation on the scope of protection of this utility model. Any other corresponding changes and modifications made based on the technical concept of this utility model should be included within the scope of protection of the claims of this utility model.

Claims

1. A duct inlet wind speed observation device, connected to the inlet of a fan duct, characterized in that, include: The connector is built into the inlet of the fan duct and is detachably connected to the fan duct. as well as A sliding body is positioned relative to the observation window and is built into the fan duct. The sliding body is slidably fitted onto the connector along the guide of the connector. When the gas in the fan duct flows through the sliding body, the flow path of the gas above the sliding body is greater than the flow path below the sliding body, so that when the gas flows through the sliding body, it generates a lift force that pushes the sliding body relative to the connector to different heights.

2. The duct inlet wind speed observation device according to claim 1, characterized in that, The connector includes a connecting rod and two connecting parts. The connecting rod is vertically arranged along the diameter direction of the fan duct and is built into the fan duct. The two connecting parts are respectively arranged at both ends of the connecting rod. The connecting parts are connected to the connecting rod and are detachably connected to the fan duct.

3. The duct inlet wind speed observation device according to claim 2, characterized in that, The fan duct has an installation hole that penetrates the opposite side walls of the fan duct. The connecting part includes a connecting nut. The connecting rod is inserted into the installation hole, and both ends of the connecting rod are respectively externally placed on the fan duct. Both ends of the connecting rod have external threads. The two connecting nuts are respectively threaded to the two ends of the connecting rod and abut against the outer side wall of the fan duct.

4. The duct inlet wind speed observation device according to claim 3, characterized in that, The connecting part also includes a sealing gasket, which is disposed between the connecting nut and the outer wall of the fan duct, and is sleeved on the connecting rod, with both ends of the sealing gasket abutting against the outer wall of the connecting nut and the fan duct respectively.

5. The duct inlet wind speed observation device according to claim 2, characterized in that, The sliding body is plate-shaped and has a sliding hole. The sliding body is slidably fitted onto the connecting rod through the sliding hole, and the diameter of the sliding hole is larger than the diameter of the connecting rod.

6. The duct inlet wind speed observation device according to claim 5, characterized in that, The sliding body includes a delta airfoil, which is in the shape of an equilateral triangle and has a windward tip and a leeward end. The thickness of the windward tip and the leeward end of the delta airfoil gradually increases in the direction of mutual approach, and a transition arc surface is formed at the top of the windward tip and the leeward end of the delta airfoil.

7. The duct inlet wind speed observation device according to claim 6, characterized in that, The sliding body also has a connecting bottom, which is configured to match the shape of the airfoil and is connected to the lower part of the airfoil, and the area of ​​the connecting bottom is larger than the area of ​​the delta airfoil.

8. The duct inlet wind speed observation device according to claim 7, characterized in that, The bottom of the connection has an opening, which is located between the leeward ends of the two delta airfoils, and the opening gradually increases in size along the leeward end away from the delta airfoil.

9. The duct inlet wind speed observation device according to claim 2, characterized in that, The connecting rod has multiple observation segments along its height direction, and the surfaces of the multiple observation segments are respectively provided with multiple first coatings, and the colors of the multiple first coatings are different from each other.

10. The duct inlet wind speed observation device according to claim 9, characterized in that, The surface of the slider is provided with a second coating, and the second coating and the plurality of first coatings are all different colors.

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