Fixing mechanism and air volume measuring device

Abstract

The invention discloses a fixing mechanism and an air volume measuring device.The fixing mechanism comprises a fixing assembly, the fixing assembly comprises a fixing lantern ring and a fixing piece, the side, away from the fixing lantern ring, of the fixing piece is provided with a binding face used for increasing friction force between the fixing piece and a pipe wall, and the fixing piece is further provided with a sliding piece used for being in transmission connection with the fixing lantern ring; the sliding part can drive the fixed part to be close to or away from the fixed lantern ring in the radial direction of the fixed lantern ring, a fixed sliding groove allowing the sliding part to slide is formed in the fixed lantern ring, the fixed sliding groove penetrates through the outer wall of the fixed lantern ring, and a driving assembly used for controlling the sliding part to slide is arranged on the fixed lantern ring. The fixing mechanism has the beneficial effects that the fixing operation of the fixing mechanism is completed through mutual attachment of the fixing piece and the wall of the air pipe, mounting and dismounting of the fixing mechanism can be achieved only by controlling the driving lantern ring to rotate through the arrangement of the driving lantern ring, and the mounting and dismounting efficiency of the fixing mechanism is greatly improved through the simple fixing mode.

Description

Technical Field

[0001] The present invention relates to the field of air volume measurement, in particular to a fixing mechanism and an air volume measuring device. Background Art

[0002] Air volume measurement is crucial in many fields. For example, in thermal power plants, air volume measurement can directly impact the plant's operational efficiency, safety, economy, and environmental performance. However, existing air volume measurement devices typically use bolts to secure them to the air duct. Due to the confined space inside the duct, using tools and bolts for installation is inconvenient. Furthermore, airflow can cause vibration in the bolts, leading to loosening and compromising the stability of the air volume measurement device. To address this issue, we propose a fixing mechanism and air volume measurement device. Summary of the Invention

[0003] Therefore, the technical problem to be solved by the present invention is that the existing installation method of the air volume measuring device is inconvenient to be carried out in a narrow space, and it is inconvenient to improve the installation efficiency of the air volume measuring device.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: a fixing mechanism, which includes a fixing assembly, including a fixing collar and a fixing piece, wherein the fixing piece is provided with a fitting surface on the side away from the fixing collar for increasing the friction between the fixing piece and the pipe wall, and the fixing piece is also provided with a sliding piece for transmission connection between the fixing piece and the fixing collar, and the sliding piece can drive the fixing piece closer to or away from the fixing collar along the radial direction of the fixing collar.

[0005] As a preferred solution of the fixing mechanism of the present invention, the fixing collar is provided with a fixing groove for the sliding member to slide, and the fixing groove passes through the outer wall of the fixing collar, and the fixing collar is provided with a driving component for controlling the sliding of the sliding member.

[0006] As a preferred solution of the fixing mechanism of the present invention, the driving assembly includes a driving collar sleeved on the outer wall of the fixing collar, a spiral guide rail is provided on the driving collar, and a driving block engaged with the spiral guide rail is provided on the sliding member.

[0007] As a preferred solution of the fixing mechanism of the present invention, wherein: an anti-slip groove is opened in the fixing ring, and an anti-slip ring is provided in the anti-slip groove and is fixed to the inner wall of the driving ring, the anti-slip ring and the inner wall of the anti-slip groove are in conflict with each other, and a driving rod is provided on the side of the driving ring opposite to the spiral guide rail.

[0008] As a preferred solution of the fixing mechanism of the present invention, wherein: a ratchet is provided on the inner wall of the anti-slip ring, and a pawl is engaged on the ratchet, and a telescopic rod is elastically hinged at the rotating end of the pawl.

[0009] As a preferred solution of the fixing mechanism of the present invention, one end of the telescopic rod slides through the anti-slip groove and is installed with a synchronization ring, and the other end is provided with a telescopic spring fixed to the anti-slip groove.

[0010] The beneficial effects of the fixing mechanism of the present invention are as follows: the fixing operation of the fixing mechanism is completed by the mutual fit between the fixing part and the air duct wall, and the setting of the driving collar is utilized so that the installer only needs to control the rotation of the driving collar to realize the loading and unloading of the fixing mechanism. This simple fixing method greatly improves the loading and unloading efficiency of the fixing mechanism.

[0011] Another object of the present invention is to provide an air volume measuring device, which aims to solve the problem that the air inlet cavity in the existing measuring device compresses the wind force, thereby affecting the measurement effect of the measuring element in the air inlet cavity.

[0012] In order to solve the above technical problems, the present invention also provides the following technical solutions: a wind volume measuring device, which includes a fixing mechanism; and a measuring component, including an air inlet cavity opened on the inner wall of the fixing ring, and a measuring blade arranged in the air inlet cavity and a revolution counter for recording the number of rotations of the measuring blade.

[0013] As a preferred solution of the air volume measuring device of the present invention, a mounting bracket is provided on the inner wall of the air inlet chamber, and a support shaft for carrying the measuring blade and the revolution counter is rotatably mounted on the mounting bracket.

[0014] As a preferred solution of the air volume measuring device of the present invention, one end of the support shaft away from the mounting bracket extends to the outside of the air inlet cavity and is connected to the measuring blade.

[0015] As a preferred solution of the air volume measuring device of the present invention, the air inlet cavity includes an air inlet and an air outlet, and the diameter of the air inlet is larger than that of the air outlet.

[0016] The beneficial effects of the air volume measuring device of the present invention are as follows: the measurement work is completed by setting the measuring blade and the circle counter, and the special setting of the support shaft is utilized so that the measuring blade is installed outside the air inlet cavity, away from the influence of the air inlet cavity on the wind flow, thereby greatly improving the measurement accuracy of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings of the embodiments of the present invention. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Among them:

[0018] Figure 1 Shows a schematic diagram of the three-dimensional structure of the invention;

[0019] Figure 2Shows a cross-sectional view of the fixed chute in the invention;

[0020] Figure 3 Shown Figure 2 Schematic diagram of the enlarged structure of area A in the middle;

[0021] Figure 4 Shows a schematic diagram of the spiral guide rail and drive block structure in the invention;

[0022] Figure 5 Shows a schematic diagram of the structure of the measuring component in the invention;

[0023] Figure 6 Shown is a cross-sectional view of the measuring assembly of the invention. DETAILED DESCRIPTION

[0024] In order to enable those skilled in the art to better understand the present invention, the present invention is further described in detail below with reference to specific embodiments and the accompanying drawings.

[0025] The terms used in the present invention are those commonly used in the art in view of the functions of the present invention, but these terms may vary according to the intentions of those skilled in the art, precedents, or new technologies in the art. In addition, specific terms may be selected by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the present invention. Therefore, the terms used in the specification should not be understood as simple names, but rather as the meanings of the terms and the overall description of the present invention.

[0026] This embodiment provides a fixing mechanism, such as Figure 1 and Figure 3 As shown, the sliding member 14 slides through the fixed slide groove 15 provided on the fixed collar 11, and the end of the sliding member 14 away from the fixed collar 11 is fixedly installed with a fixing member 12, and the side of the fixing member 12 opposite to the sliding member 14 is fixedly connected with a fitting surface 13. Therefore, when the equipment needs to be fixed to the air duct wall, the sliding member 14 can be pushed to slide in the fixed slide groove 15, so that the fitting surface 13 on the fixing member 12 is close to the air duct wall until the fitting surface 13 and the air duct wall conflict with each other, thereby utilizing the mutual extrusion between the fitting surface 13 and the air duct wall to complete the fixing operation of the device.

[0027] As a further improvement of this embodiment, Figure 2 As shown, the fitting surface 13 is set to an outward convex arc structure. Because in fluid mechanics, the streamline shape of a circular pipe is the most natural and smooth, so under the same air volume and wind speed conditions, the along-the-line resistance coefficient of a circular air duct is usually smaller than that of air ducts of other shapes. Therefore, most existing air ducts have a circular cross-section. The shape setting of the fitting surface 13 can increase the contact area between the fitting surface 13 and the inner wall of the air duct, thereby improving the installation stability between the fitting surface 13 and the air duct wall.

[0028] like Figure 2 and Figure 4 As shown, the driving collar 21 is sleeved on the fixed collar 11, and the sliding member 14 is fixedly connected to the driving block 23 on one side close to the driving collar 21, and a spiral guide rail 22 that meshes with the driving block 23 is fixedly installed on one side of the driving collar 21, and a driving rod 26 is fixedly connected on the other side. Therefore, the installer can drive the driving collar 21 to rotate by toggling the driving rod 26, and utilize the engagement of the spiral guide rail 22 on the driving collar 21 with the driving block 23 to drive the sliding member 14 to move in the fixed slide groove 15 to achieve the fixing operation. In this fixing method, the staff only needs to rotate the driving collar 21 to realize the installation and disassembly of the fixing mechanism. Compared with the traditional bolt installation method, a large number of operating steps are reduced, the efficiency of device loading and unloading is greatly improved, and it is conducive to the promotion of the equipment.

[0029] like Figure 3 As shown, an anti-slip groove 24 communicating with the outside is provided inside the fixed collar 11, and an anti-slip ring 25 fixed to the inner wall of the driving collar 21 is slidably installed in the anti-slip groove 24. Therefore, the driving collar 21 is rotatably connected to the fixed collar 11 through the cooperation of the anti-slip ring 25 and the anti-slip groove 24.

[0030] The flow of air in the duct will drive the vibration of the internal devices in the duct. Therefore, in the traditional bolt installation method, the bolts are easily loosened under the action of the air flow, thereby affecting the installation stability. Therefore, as a further improvement in this embodiment, Figure 3 As shown, a ratchet 27 is fixedly installed on the inner wall of the anti-slip ring 25, and a pawl 28 is engaged with the ratchet 27. Therefore, when the staff toggles the drive rod 26 to drive the drive collar 21 to rotate to achieve the fixation of the device, the ratchet 27 is not hooked with the pawl 28, and does not affect the rotation of the drive collar 21. After the fixation is completed, when the drive collar 21 in the air duct is reversed under the action of external force, the ratchet 27 fixedly installed on the inner wall of the anti-slip ring 25 will conflict with the pawl 28 to prevent the drive collar 21 from reversing, so that the fixing member 12 will not move in the radial direction of the fixing collar 11, thereby ensuring the stability of the installation of the fixing mechanism.

[0031] like Figure 3 As shown, the telescopic rod 29 slides through the anti-slip groove 24 and is installed with a synchronizer ring 210. A telescopic spring 211 is installed at one end of the telescopic rod 29 located in the anti-slip groove 24. Therefore, when disassembling the fixing mechanism, the synchronizer ring 210 can be pushed to drive the telescopic rod 29 to move. Because the telescopic rod 29 is elastically hinged to the pawl 28, the movement of the telescopic rod 29 will drive the pawl 28 to disengage from the hooked state with the ratchet 27. At this time, the reverse drive ring 21 can drive the fitting surface 13 on the fixing member 12 to disengage from the contact state with the air duct wall, completing the disassembly of the fixing mechanism.

[0032] This embodiment provides an air volume measurement device, such as Figure 5 As shown, an air inlet cavity 31 is provided on the inner wall of the fixed collar 11. In the air inlet cavity 31, a measuring blade 32 and a revolution counter 33 are connected to the air inlet cavity 31 via a mounting bracket 34. Therefore, during measurement, the airflow flowing in the air duct will drive the measuring blade 32 to rotate, and the revolution counter 33 will record the number of revolutions (N) made by the measuring blade 32 within a certain period of time (T). Therefore, the staff can use the formula V (wind speed) = N / T to obtain the airflow velocity in the air duct in the corresponding time period, thereby completing the wind speed measurement.

[0033] As a further improvement, in this embodiment, the length of the support shaft 35 is set to be greater than the length of the air inlet cavity 31. Figure 6 As shown, a measuring blade 32 is installed at the end of the support shaft 35 away from the air inlet chamber 31. Because the installation diameter of the air inlet chamber 31 is smaller than the diameter of the air duct, when the airflow in the air duct enters the air inlet chamber 31, it will be compressed, and its flow rate will change, thereby affecting the measurement accuracy of the measuring blade 32 originally set in the air inlet chamber 31. Therefore, setting the measuring blade 32 outside the air inlet chamber 31 can better measure the wind speed in the air duct, thereby improving the measurement accuracy.

[0034] The air volume measuring device installed in the air duct will block the wind in the air duct and affect its flow. As a further improvement in this embodiment, Figure 6 As shown, the diameter of the air inlet 311 is set to be larger than the diameter of the air outlet 312, thereby reducing the obstruction of the wind by the air inlet 311 and compressing the air flow entering the air inlet cavity 31, thereby increasing the wind speed and flow rate in the measuring device and reducing the impact of the air volume measuring device on wind circulation.

[0035] Finally, it should be pointed out that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways without departing from the scope of the present invention.

Claims

1. A fixing mechanism, characterized in that: include, A fixing assembly (1) comprises a fixing collar (11) and a fixing member (12), wherein a side of the fixing member (12) away from the fixing collar (11) is provided with a fitting surface (13) for increasing friction between the fixing member (12) and a pipe wall; The fixing member (12) is further provided with a sliding member (14) for transmission connection between the fixing member (12) and the fixing collar (11), and the sliding member (14) can drive the fixing member (12) to approach or move away from the fixing collar (11) along the radial direction of the fixing collar (11).

2. The fixing mechanism according to claim 1, wherein: The fixed collar (11) is provided with a fixed groove (15) for the sliding member (14) to slide, and the fixed groove (15) passes through the outer wall of the fixed collar (11). The fixed collar (11) is provided with a driving component (2) for controlling the sliding of the sliding member (14).

3. The fixing mechanism according to claim 2, wherein: The driving assembly (2) comprises a driving collar (21) sleeved on the outer wall of the fixed collar (11), a spiral guide rail (22) being provided on the driving collar (21), and a driving block (23) meshing with the spiral guide rail (22) being provided on the sliding member (14).

4. The fixing mechanism according to claim 3, wherein: An anti-slip groove (24) is provided in the fixed collar (11), and an anti-slip ring (25) fixedly connected to the inner wall of the driving collar (21) is provided in the anti-slip groove (24), and the anti-slip ring (25) and the inner wall of the anti-slip groove (24) are in contact with each other. A driving rod (26) is provided on the side of the driving collar (21) opposite to the spiral guide rail (22).

5. The fixing mechanism according to claim 4, characterized in that: The inner wall of the anti-slip ring (25) is provided with a ratchet (27), and a pawl (28) is engaged on the ratchet (27), and a telescopic rod (29) is elastically hinged at the rotating end of the pawl (28).

6. The fixing mechanism according to claim 5, characterized in that: One end of the telescopic rod (29) slides through the anti-slip groove (24) and is installed with a synchronization ring (210), and the other end is provided with a telescopic spring (211) fixedly connected to the anti-slip groove (24).

7. An air volume measuring device, characterized in that: comprising the fixing mechanism according to any one of claims 1 to 6; and The measuring assembly (3) comprises an air inlet cavity (31) provided on the inner wall of the fixed collar (11), a measuring blade (32) arranged in the air inlet cavity (31), and a revolution counter (33) for recording the number of revolutions of the measuring blade (32).

8. The air volume measuring device according to claim 7, characterized in that: A mounting bracket (34) is provided on the inner wall of the air inlet chamber (31), and a support shaft (35) for carrying a measuring blade (32) and a revolution counter (33) is rotatably mounted on the mounting bracket (34).

9. The air volume measuring device according to claim 8, characterized in that: One end of the support shaft (35) away from the mounting bracket (34) extends to the outside of the air inlet cavity (31) and is connected to the measuring blade (32).

10. The air volume measuring device according to claim 9, characterized in that: The air inlet cavity (31) comprises an air inlet (311) and an air outlet (312), and the diameter of the air inlet (311) is larger than that of the air outlet (312).

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