Nuclear power plant anemograph comparison device

Abstract

The utility model relates to a nuclear power plant anemograph comparison device, the nuclear power plant anemograph comparison device comprises a support, an air pipe, a fan, a calibration anemograph and a clamp, the support is provided with a containing cavity, a ventilation hole and an avoiding hole; the air pipe comprises a measuring part, a connecting part and a mounting part which are sequentially connected and communicated to form an air cavity; the measuring part is provided with an air inlet; the pipe wall of the measuring part is provided with a calibration assembling hole and a to-be-measured assembling hole. The connecting part is positioned outside the side wall of the bracket; the mounting part penetrates through the avoiding hole, and an air outlet is formed in the mounting part; the fan is arranged at the air outlet of the mounting part; the calibration anemograph is arranged corresponding to the calibration assembly hole; the clamp is used for clamping a to-be-tested anemograph arranged in the to-be-tested assembly hole in a penetrating mode. Therefore, the length size of the anemograph comparison device of the nuclear power plant can be reduced, and miniaturization is realized; a simulation environment is formed in the air cavity through cooperation of the fan and the air pipe, the anemograph is calibrated to measure the real-time air speed, and the accuracy of comparison of the anemograph to be measured can be improved.

Description

Technical Field

[0001] This application relates to the field of metrology instrument calibration, and in particular to a comparison device for anemometers in nuclear power plants. Background Technology

[0002] Anemometers are widely used environmental monitoring instruments, including in nuclear power plants for safety monitoring. During use, anemometers inevitably malfunction. To ensure the reliability of environmental monitoring data, anemometers need to be calibrated regularly. However, it is difficult to determine whether measurement inaccuracies have occurred based solely on the anemometer's own data. Therefore, there is an urgent need for a device that can compare and calibrate anemometers. Utility Model Content

[0003] This application provides a nuclear power plant anemometer comparison device to improve the accuracy of comparison with the anemometer under test.

[0004] In a first aspect, this application provides a nuclear power plant anemometer comparison device, comprising:

[0005] The bracket has a receiving cavity, a ventilation hole, and a clearance hole, wherein the ventilation hole and the clearance hole are respectively connected to the receiving cavity; the outer side of the top wall of the bracket is defined as the mounting side;

[0006] The air duct includes a measuring section, a connecting section, and a mounting section. The measuring section, the connecting section, and the mounting section are sequentially connected and communicate with each other to form an air cavity. The measuring section is located on the mounting side, and an air inlet is provided at the end of the measuring section away from the mounting section. The duct wall of the measuring section has a calibration assembly hole and a test assembly hole that communicate with the air cavity. The connecting section is located outside the side wall of the bracket. The mounting section passes through the clearance hole, and an air outlet is provided at the end of the mounting section away from the connecting section.

[0007] A fan is disposed within the receiving cavity and at the air outlet of the mounting portion;

[0008] A calibration anemometer is installed in the measuring section and is configured corresponding to the calibration assembly hole;

[0009] A clamp is provided on the mounting side and is configured corresponding to the mounting hole to be tested; the clamp is used to hold the anemometer to be tested that passes through the mounting hole to be tested.

[0010] Furthermore, the clearance hole is located on the side wall of the bracket; the ventilation hole is located on the bottom wall of the bracket.

[0011] Furthermore, the mounting part is L-shaped; one end of the mounting part extends toward the clearance hole and is connected to the connecting part; the other end of the mounting part extends toward the top wall of the bracket and is connected to the fan.

[0012] Driven by the fan, outside air enters the air cavity from the air inlet, flows through the fan and into the receiving cavity, and is then discharged from the ventilation hole.

[0013] Furthermore, the fan includes:

[0014] A fan support frame is located within the receiving cavity and is mounted on a bracket;

[0015] The fan body is located inside the receiving cavity and fixed to the fan support frame; the fan body is connected to the mounting part.

[0016] Furthermore, the fan body includes:

[0017] The cover has a fan cavity, a fan inlet, and a fan outlet, wherein the fan inlet and the fan outlet are respectively connected to the fan cavity; the cover is connected to the mounting part, and the fan inlet is correspondingly arranged with the air outlet;

[0018] The fan blades are rotatably disposed within the fan cavity;

[0019] A drive unit is located outside the housing, and the output end of the drive unit is connected to the fan blade.

[0020] Furthermore, the duct also includes an air guide section, which is connected to the end of the measuring section away from the connecting section, and the air guide section is trumpet-shaped;

[0021] And / or, it also includes a filter screen, which is disposed in the air duct and is provided corresponding to the air inlet and / or the air outlet.

[0022] Furthermore, it also includes a fixing component, the fixing component comprising:

[0023] A retaining ring is fitted onto the measuring part and positioned close to the assembly hole to be measured;

[0024] A movable plate is movably connected to the fixed ring and fits against the measuring part; wherein the movable plate moves to open or close the assembly hole to be measured.

[0025] Furthermore, there are two movable plates, which are arranged opposite to each other; each movable plate has a positioning groove on the side facing the other movable plate; wherein the two movable plates can move towards each other until they abut, and the two positioning grooves enclose to form a positioning hole, which is used for the anemometer to be measured to pass through.

[0026] Furthermore, it also includes a control box and a display screen, the control box being mounted on the bracket; the control box contains a controller, and the calibration anemometer and the fan are electrically connected to the controller respectively;

[0027] The display screen is located on the mounting side and is electrically connected to the controller.

[0028] Furthermore, it also includes casters, which are located on the outer side of the bottom wall of the bracket;

[0029] And / or, it also includes a handle, said handle being disposed on the mounting side;

[0030] And / or, it also includes a storage cabinet, the storage cabinet being disposed on the bracket;

[0031] And / or, it also includes a drawer, the drawer being movably disposed on the bracket;

[0032] And / or, it also includes a storage box disposed on the outside of the side wall of the bracket.

[0033] The technical solution provided in this application has the following advantages compared with the prior art:

[0034] In this application's technical solution, a bracket provides the installation support foundation. The duct includes a measuring section, a connecting section, and a mounting section connected sequentially. The measuring section is located on the outer side of the top of the bracket, facilitating the installation and removal of the anemometer under test. The fan is placed within the bracket's receiving cavity, and the duct's mounting section is concealed within the cavity. This reduces the length of the nuclear power plant's anemometer comparison device, and the fan's location within the cavity provides protection and isolation. When comparing the anemometer under test, it can be inserted through the mounting hole, with one end positioned within the air cavity and the other end stably clamped by a fixture. The fixture provides stable clamping, ensuring the anemometer's positional stability. During measurement, the fan starts, and external air enters the air cavity through the inlet. The calibration anemometer and the anemometer under test measure the wind speed within the air cavity. Subsequent comparison of the measurement results from the calibration anemometer and the anemometer under test can determine if the anemometer under test is malfunctioning. This application creates a simulated environment within the air cavity through the cooperation of a fan and an air duct, and has a simple structure; a calibration anemometer is installed in the air duct to measure the real-time wind speed, which can improve the accuracy of the comparison with the anemometer under test. Attached Figure Description

[0035] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0036] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] One or more embodiments are illustrated by way of example with reference numerals in the accompanying drawings. These illustrations do not constitute a limitation on the embodiments. Elements with the same reference numerals in the drawings are denoted as similar elements. Unless otherwise stated, the figures in the drawings are not to be limited by scale.

[0038] Figure 1 A schematic diagram of a nuclear power plant anemometer comparison device provided in this application embodiment;

[0039] Figure 2 for Figure 1 A schematic diagram showing the hidden portion of the structure.

[0040] Figure 3 for Figure 1 Another angle diagram;

[0041] Figure 4 for Figure 1 Another angle diagram;

[0042] Figure 5 for Figure 2 A partial decomposition diagram.

[0043] Explanation of reference numerals in the attached figures:

[0044] Support bracket 1, receiving cavity 1a, ventilation hole 1b, clearance hole 1c, mounting side 11, caster 12, handle 13, cabinet 14, storage cavity 14a, drawer 15, storage box 16, air duct 2, measuring part 21, connecting part 22, mounting part 23, air inlet 2a, assembly hole to be measured 2c, air guide part 24, first cabinet door 25, partition 26.

[0045] Fan 3, fan support frame 31, fan body 32, casing 321, fan outlet 321c, fan blade 322, drive component 323.

[0046] Sealing clamp 41, support arm 42,

[0047] 5. Clamp; 6. Filter screen; 7. Fixing assembly; 71. Fixing ring; 72. Movable plate; 7a. Positioning groove; 73. Actuating element.

[0048] Control box 81, display screen 82. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] The following disclosure provides numerous different embodiments or examples for implementing various structures of this application. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0051] For ease of description, spatial relative terms may be used in the text to describe the relative position or movement of one element or feature relative to another element or feature, as shown in the figure. These relative terms include, for example, "inside," "outside," "middle," "outer," "below," "below," "above," "front," "back," etc. Such spatial relative terms are intended to include different orientations of the device in use or operation, other than those depicted in the figure. For example, if the device in the figure undergoes a positional flip, orientation change, or change of motion, these directional indications will change accordingly. For instance, an element described as "below other elements or features" or "below other elements or features" will subsequently be oriented "above other elements or features" or "above other elements or features." Therefore, the example term "below" can include both upper and lower orientations. The device may be otherwise oriented (rotated 90 degrees or in other directions), and the spatial relative descriptors used in the text will be interpreted accordingly.

[0052] Figures 1 to 5A nuclear power plant anemometer comparison device provided in this application includes a support 1, a duct 2, a fan 3, a calibration anemometer, and a fixture 5. The support 1 has a receiving cavity 1a, a ventilation hole 1b, and a clearance hole 1c, which are respectively connected to the receiving cavity 1a. The outer side of the top wall of the support 1 is defined as the mounting side 11. The duct 2 includes a measuring part 21, a connecting part 22, and a mounting part 23, which are sequentially connected and communicate to form an air cavity. The measuring part 21 is located on the mounting side 11, and the measuring part 21 is located away from the mounting part 23. The measuring section 21 has an air inlet 2a at one end; the pipe wall of the measuring section 21 has a calibration assembly hole and a test assembly hole 2c that communicate with the air cavity; the connecting section 22 is located outside the side wall of the bracket 1; the mounting section 23 passes through the clearance hole 1c, and the end of the mounting section 23 away from the connecting section 22 has an air outlet; the fan 3 is located in the receiving cavity 1a and at the air outlet of the mounting section 23; the calibration anemometer is located in the measuring section 21 and is set corresponding to the calibration assembly hole; the clamp 5 is located on the mounting side 11 and is set corresponding to the test assembly hole 2c; the clamp 5 is used to clamp the test anemometer that passes through the test assembly hole 2c.

[0053] It is understandable that the bracket 1 provides the installation support base; the duct 2 includes a measuring part 21, a connecting part 22, and a mounting part 23 connected in sequence. The measuring part 21 is located on the outer side of the top of the bracket 1, which facilitates the installation and removal of the anemometer to be measured; the fan 3 is set in the receiving cavity 1a of the bracket 1, and the mounting part 23 of the duct 2 is hidden in the receiving cavity 1a. In this way, the length of the anemometer comparison device for the nuclear power plant can be reduced, achieving miniaturization. Moreover, the fan 3 is located in the receiving cavity 1a, which can protect and isolate the fan 3. When it is necessary to compare the anemometer to be measured, the anemometer to be measured can be inserted through the mounting hole 2c, so that one end of the anemometer to be measured is located in the air cavity, and the other end is stably clamped by the clamp 5. During measurement, fan 3 is started, and external air enters the air cavity through air inlet 2a. A calibration anemometer and the anemometer under test measure the wind speed information within the air cavity. Subsequently, the measurement results of the calibration anemometer and the anemometer under test can be compared to determine if the anemometer under test is faulty. This application creates a simulated environment within the air cavity through the cooperation of fan 3 and air duct 2, and the structure is simple. The calibration anemometer installed in air duct 2 measures the real-time wind speed, which can improve the accuracy of the comparison with the anemometer under test.

[0054] To ensure normal airflow, a ventilation hole 1b is provided in the support 1. The air in the air cavity is discharged into the receiving cavity 1a after passing through the fan 3, and then discharged to the outside through the ventilation hole 1b.

[0055] In this embodiment, to facilitate the installation of the air duct 2 and the fan 3, a first cabinet door 25 is provided on the bracket 1 for rotation, and the first cabinet door 25 is provided corresponding to the mounting part 23 and the fan 3.

[0056] The anemometer under test consists of an anemometer body and a probe. The probe performs measurements and transmits the measurement information to the anemometer body for recording or display. During calibration and comparison of the anemometer under test, the probe portion is inserted into the wind cavity through the mounting hole 2c. To ensure the probe can pass through smoothly, the size of the mounting hole 2c is slightly larger than the size of the probe.

[0057] To reduce air leakage from the assembly hole 2c during wind speed measurement, which could affect the accuracy of the comparison, such as... Figure 1 , Figure 2 and Figure 5 As shown, the technical solution of this embodiment also includes a fixing component 7, which includes a fixing ring 71 and a movable plate 72. The fixing ring 71 is sleeved on the measuring part 21 and positioned close to the assembly hole 2c to be measured. The movable plate 72 is movably connected to the fixing ring 71 and fits against the measuring part 21. The movable plate 72 can move to open or close the assembly hole 2c to be measured. The fixing ring 71 serves to install and limit the movable plate 72. The movable plate 72 fits against the outside of the measuring part 21, and the shape of the movable plate 72 is adapted to the external shape of the measuring part 21, which can reduce the gap between the movable plate 72 and the measuring part 21.

[0058] Understandably, before the fan 3 is started, when installing the anemometer to be tested, in order to ensure that the anemometer to be tested is smoothly inserted into the air cavity, the movable plate 72 is moved to open the mounting hole 2c to be tested. After the anemometer to be tested is installed in place, the movable plate 72 is moved to close the mounting hole 2c to be tested.

[0059] like Figure 5 As shown, in this embodiment, there are two movable plates 72, which are arranged opposite to each other. Each movable plate 72 has a positioning groove 7a on the side facing the other movable plate 72. The two movable plates 72 can move towards each other until they abut, and the two positioning grooves 7a enclose each other to form a positioning hole, which is used for the anemometer to be measured to pass through. This improves the sealing performance at the mounting hole 2c to be measured.

[0060] In some embodiments, a sealing strip is provided in the positioning groove 7a, and a sealing strip is provided on the side of the movable plate 72 facing the measuring part 21, thereby further improving the sealing performance at the assembly hole 2c to be measured.

[0061] refer to Figure 5 In this embodiment, there are two fixing rings 71, which are spaced apart along the axial direction of the measuring part 21, thereby improving the stability of the movable plate 72.

[0062] refer to Figure 5In this embodiment, the fixing ring 71 includes two half-rings, which are detachably connected by fasteners. In this way, the fasteners can be loosened when installing the anemometer to be tested and the sliding movable plate 72, and the fasteners can be tightened after the anemometer to be tested is installed in place and the movable plate 72 moves to clamp the anemometer to be tested, thereby improving the sealing performance at the mounting hole 2c to be tested.

[0063] refer to Figure 5 In the technical solution of this embodiment, in order to facilitate the movement of the movable plate 72, a toggle member 73 can be provided on the side of the movable plate 72 away from the measuring part 21.

[0064] refer to Figure 3 In the technical solution of this embodiment, in order to improve the sealing performance at the calibration assembly hole, a sealing clamp 41 is provided at the calibration assembly hole. The sealing clamp 41 includes a sealing part and a clamping part. The calibration anemometer passes through the calibration assembly hole, with one end located inside the air cavity and the other end located outside the air cavity. The sealing part is located inside the calibration assembly hole and is sleeved on the calibration anemometer. The clamping part is used to clamp the part of the calibration anemometer located outside the measuring part 21, thereby improving the positional stability of the calibration anemometer.

[0065] refer to Figure 3 In this embodiment, the duct 2 is stably mounted on the mounting side 11 of the bracket 1 via a support arm 42, and the number of support arms 42 can be set to one or more. In this embodiment, the clamping part used to hold and calibrate the anemometer is fixed to the support arm 42.

[0066] like Figure 1 As shown, the technical solution of this embodiment also includes casters 12, which are located on the outer side of the bottom wall of the bracket 1; thus, the movement of the entire device can be facilitated.

[0067] like Figure 2 As shown, in the technical solution of this embodiment, the clearance hole 1c is provided on the side wall of the bracket 1, which facilitates the installation of the air duct 2. The ventilation hole 1b is provided on the bottom wall of the bracket 1, and the air flows out from the bottom of the bracket 1, which can reduce the impact of the flowing air on the air inlet 2a, and the ventilation hole is provided on the bottom wall of the bracket 1 without affecting the appearance of the bracket 1.

[0068] It should be noted that in some other embodiments, the ventilation hole 1b may also be provided on the side wall or top wall of the bracket 1, all of which are within the protection scope of this application.

[0069] like Figure 2As shown, in the technical solution of this embodiment, the mounting part 23 is L-shaped; one end of the mounting part 23 extends toward the clearance hole 1c and is connected to the connecting part 22; the other end of the mounting part 23 extends toward the top wall of the bracket 1 and is connected to the fan 3; with this arrangement, the space inside the accommodating cavity 1a can be rationally utilized, thereby realizing the miniaturization of the device.

[0070] like Figure 1 As shown, in the technical solution of this embodiment, the fan 3 includes a fan support frame 31 and a fan body 32. The fan support frame 31 is located in the receiving cavity 1a and is installed on the bracket 1; the fan body 32 is located in the receiving cavity 1a and is fixed to the fan support frame 31; the fan body 32 is connected to the mounting part 23.

[0071] Understandably, the fan support frame 31 provides an installation position and support for the fan body 32, reducing the pressure of the fan body 32 on the installation part 23 of the duct 2.

[0072] like Figure 1 As shown, in this embodiment, the fan body 32 includes a housing 321, a fan blade 322, and a drive component 323. The housing 321 has a fan cavity 3, a fan inlet 3, and a fan outlet 321c, which are respectively connected to the fan cavity 3. The housing 321 is connected to the mounting part 23, and the fan inlet 3 and the air outlet 321 are correspondingly arranged. The fan blade 322 is rotatably disposed inside the fan cavity 3. The drive component 323 is disposed outside the housing 321, and the output end of the drive component 323 is connected to the fan blade 322. It can be understood that the drive component 323 drives the fan blade 322 to rotate, thereby forming gas pressure and discharging air to form a flowing airflow in the duct 2.

[0073] In this embodiment, a filter screen 6 is provided at the inlet of the fan 3 in the housing 321 to provide protection and prevent foreign objects from entering the fan 3 cavity. In other embodiments, a filter screen 6 may also be provided at the air outlet of the mounting part 23.

[0074] like Figure 1 and Figure 2 As shown, in the technical solution of this embodiment, the air duct 2 further includes an air guide section 24, which is connected to the end of the measuring section 21 away from the connecting section 22. The air guide section 24 is funnel-shaped; thus, external air can be smoothly guided into the measuring section 21 by the air guide section 24. The funnel shape of the air guide section 24 not only guides the air but also makes the incoming airflow field more stable.

[0075] like Figure 3 As shown, in order to prevent foreign objects from entering the air cavity, a filter screen 6 is provided at the air inlet 2a of the measuring unit 21 in this embodiment.

[0076] like Figure 1 As shown, the technical solution of this embodiment also includes a control box 81 and a display screen 82. The control box 81 is mounted on the bracket 1. The control box 81 contains a controller, and the fan 3 is electrically connected to the controller. The controller in the control box 81 controls the opening and closing of the fan 3, and can also control the power of the fan 3 to control the wind speed formed in the duct 2. For example, the fan 3 is connected to a frequency converter, and the frequency converter is connected to the controller. The controller sends instructions to the frequency converter, and the frequency converter directly controls the wind speed of the blower 3. In another embodiment, an electric air valve can also be added in the air cavity. The controller outputs an analog signal to the electric air valve to control the valve size, thereby changing the wind speed in the duct 2.

[0077] The calibration anemometer is electrically connected to the controller. The controller can control the opening and closing of the calibration anemometer and can also receive the test data from the calibration anemometer for comparison with the data from the anemometer under test.

[0078] The anemometer data can be manually input to the controller, or the anemometer can be electrically connected to the controller, which will then directly receive the data.

[0079] The display screen 82 is located on the installation side 11 for easy viewing and operation. The display screen 82 is electrically connected to the controller and can display data information as well as operation prompts.

[0080] like Figure 1 As shown, the technical solution of this embodiment also includes a handle 13, which is located on the mounting side 11. Thus, the handle 13 provides a force application position, making it convenient to pull the whole device directly by hand or pull the whole device through a traction device.

[0081] like Figure 1 As shown, the technical solution of this embodiment also includes a storage cabinet 14, which is mounted on the support 1; it can be used to place items and play a storage role.

[0082] In this embodiment, a partition plate 26 is provided in the receiving cavity 1a to separate the storage cavity 14a. A second cabinet door is provided on the bracket 1 at the position corresponding to the storage cavity 14a, so that the storage cabinet 14 can be formed.

[0083] like Figure 1 As shown, the technical solution of this embodiment also includes a drawer 15, which is movably mounted on the support 1; this can further increase the storage space and make reasonable use of the space of the support 1.

[0084] like Figure 1 As shown, the technical solution of this embodiment also includes a storage box 16, which is located on the outside of the side wall of the bracket 1 and can facilitate the storage of power cords.

[0085] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0086] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0087] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0088] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0089] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0090] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. The illustrative expressions of the above terms in this specification should not be construed as necessarily referring to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. In addition, those skilled in the art can combine and integrate the different embodiments or examples described in this specification.

[0091] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Since these modifications and variations fall within the scope of the claims and their equivalents, this application also intends to include these modifications and variations.

[0092] The above description describes specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A nuclear power plant wind speed meter comparison device, characterized by, include: The bracket (1) has a receiving cavity (1a), a ventilation hole (1b) and a clearance hole (1c), wherein the ventilation hole (1b) and the clearance hole (1c) are respectively connected to the receiving cavity (1a); the outer side of the top wall of the bracket (1) is defined as the mounting side (11); The air duct (2) includes a measuring part (21), a connecting part (22), and an installation part (23). The measuring part (21), the connecting part (22), and the installation part (23) are connected and communicate with each other to form an air cavity. The measuring part (21) is located on the installation side (11), and an air inlet (2a) is provided at one end of the measuring part (21) away from the installation part (23). The pipe wall of the measuring part (21) is provided with a calibration assembly hole and a test assembly hole (2c) communicating with the air cavity. The connecting part (22) is located outside the side wall of the bracket (1). The installation part (23) passes through the clearance hole (1c), and an air outlet is provided at one end of the installation part (23) away from the connecting part (22). A fan (3) is located inside the receiving cavity (1a) and at the air outlet of the mounting part (23); A calibration anemometer is installed in the measuring unit (21) and is provided corresponding to the calibration assembly hole; A clamp (5) is provided on the mounting side (11) and is provided corresponding to the mounting hole (2c) to be tested; the clamp (5) is used to hold the anemometer to be tested that passes through the mounting hole (2c) to be tested.

2. The nuclear power plant wind speed meter comparison device of claim 1, wherein, The clearance hole (1c) is provided on the side wall of the bracket (1); the ventilation hole (1b) is provided on the bottom wall of the bracket (1).

3. The nuclear power plant wind speed meter comparison device of claim 2, wherein, The mounting part (23) is L-shaped; one end of the mounting part (23) extends toward the clearance hole (1c) and is connected to the connecting part (22); the other end of the mounting part (23) extends toward the top wall of the bracket (1) and is connected to the fan (3); Driven by the fan (3), external air enters the air cavity from the air inlet (2a), and flows into the receiving cavity (1a) after passing through the fan (3), so as to be discharged from the ventilation hole (1b).

4. The nuclear power plant wind speed meter comparison device of claim 1, wherein, The fan (3) includes: The fan support frame (31) is located inside the receiving cavity (1a) and is installed on the bracket (1); The fan body (32) is located in the receiving cavity (1a) and fixed to the fan support frame (31); the fan body (32) is connected to the mounting part (23).

5. The nuclear power plant wind speed meter comparison device of claim 4, wherein, The fan body (32) includes: The cover (321) has a fan (3) cavity, a fan (3) inlet and a fan outlet (321c), wherein the fan (3) inlet and the fan outlet (321c) are respectively connected to the fan (3) cavity; the cover (321) is connected to the mounting part (23), and the fan (3) inlet is correspondingly provided with the air outlet; The fan blade (322) is rotatably disposed inside the fan (3) cavity; A drive unit (323) is disposed outside the housing (321), and the output end of the drive unit (323) is connected to the fan blade (322).

6. The nuclear power plant wind speedometer comparison device of claim 1, wherein, The air duct (2) also includes an air guide (24), which is connected to the end of the measuring part (21) away from the connecting part (22), and the air guide (24) is trumpet-shaped; And / or, it also includes a filter screen (6), which is disposed on the air duct (2) and is provided corresponding to the air inlet (2a) and / or the air outlet.

7. The nuclear power plant anemometer comparison device according to claim 1, characterized in that, It also includes a fixing component (7), which includes: A retaining ring (71) is fitted onto the measuring part (21) and positioned close to the assembly hole (2c) to be measured; The movable plate (72) is movably connected to the fixed ring (71) and fits against the measuring part (21); wherein the movable plate (72) moves to open or close the assembly hole (2c) to be measured.

8. The nuclear power plant wind speed meter comparison device of claim 7, wherein, The number of movable plates (72) is two, and the two movable plates (72) are arranged opposite to each other; each movable plate (72) has a positioning groove (7a) on the side facing the other movable plate (72); wherein, the two movable plates (72) can move towards each other until they abut, and the two positioning grooves (7a) surround to form a positioning hole, which is used for the anemometer to be measured to pass through.

9. The nuclear power plant wind speedometer comparison device of claim 1, wherein, It also includes a control box (81) and a display screen (82), the control box (81) being mounted on the bracket (1); the control box (81) is equipped with a controller, and the calibration anemometer and the fan (3) are electrically connected to the controller respectively; The display screen (82) is located on the mounting side (11) and is electrically connected to the controller.

10. The nuclear power plant wind speed meter comparison device of claim 1, wherein, It also includes casters (12), which are located on the outer side of the bottom wall of the bracket (1); And / or, also includes a handle (13) provided on the mounting side (11); And / or, it also includes a locker (14) disposed on the bracket (1); And / or, also includes a drawer (15) movably disposed on the bracket (1); And / or, it also includes a storage box (16) disposed on the outside of the side wall of the bracket (1).

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