A clamping device and testing method for flow sensor performance testing

Abstract

The present application relates to flow sensor fixture technical field, specifically disclose a kind of clamping device for flow sensor performance test, including rack, slider assembly and cover plate assembly, the cover plate assembly includes cover plate and four connecting columns, one end of the connecting column is fixedly connected with cover plate, the other end is movably connected with slider assembly, the first recess for cooperating with flow sensor is set in the bottom of cover plate, the slider assembly includes slider and gear assembly, the second recess for installing flow sensor is set in the upper portion of slider, the gear assembly can drive cover plate to approach or away from slider by connecting column when slider slides, so that the first recess on cover plate can cooperate with the second recess on slider to clamp or loosen flow sensor, the locking fixture simple structure, and can be operated by one hand, flow sensor can be quickly clamped and fixed, in the case where flow sensor needs to be fixed frequently, time-saving and labor-saving effect is achieved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of flow sensor clamping technology, and particularly relates to a clamping device for performance testing of a flow sensor and a testing method. BACKGROUND

[0002] The flow sensor is a precision flow measuring instrument that can be widely used for flow measurement of blast furnace gas, compressed air, steam and other liquids and gases. Together with a corresponding flow totalizing instrument, the flow sensor can be used for measuring the flow and total amount of liquids and is widely used in the metering and control systems of petroleum, chemical industry, metallurgy and scientific research.

[0003] The basic function of the flow sensor flow measurement and control experimental system is to perform characteristic testing experiments on various flow measuring instruments (CMF, turbine flowmeter, ultrasonic flowmeter, electromagnetic flowmeter, etc.). The working principle is fundamentally a black box testing principle, that is, an excitation is applied to the experimental object (flowmeter) from the outside, the response is observed and obtained, and an external characteristic model is established according to the excitation-response relationship. To realize this principle, the entire system is composed of five subsystems, namely, a flow generating device, an object measuring device, a flow calibration device, a control system and a strong electric power distribution system. The experimental device is mainly composed of a designed flow sensor, a booster pump, a water valve, a measuring cylinder and a water tank, etc. In the current common flow sensor test, the volume of water flowing through the measuring cylinder in a certain time is measured, the water valve needs to be adjusted to change the flow rate, and the operation needs to be repeated constantly. Therefore, the fixing of the flow sensor is very cumbersome and time-consuming and labor-consuming. In actual operation, because the opening degree of the water valve needs to be adjusted frequently, only one hand can be used to operate and fix the flow sensor. Therefore, a clamp capable of single-handed operation and quickly clamping and fixing the flow sensor is urgently needed. SUMMARY

[0004] The purpose of the present application is to provide a clamping device for performance testing of a flow sensor and a testing method to solve the problem that the existing flow sensor fixing steps are cumbersome and cannot be clamped and fixed by one hand.

[0005] The present application is realized by the following technical solutions:

[0006] A clamping device for performance testing of a flow sensor, comprising a rack, a slider assembly and a cover plate assembly;

[0007] The cover plate assembly comprises a cover plate and four connecting columns, the four connecting columns are respectively arranged at four corner edges of the cover plate and one end of the connecting column is fixedly connected with the cover plate, and the other end is movably connected with the slider assembly, so that the cover plate can be lifted in the vertical direction on the slider, and a first groove matched with the flow sensor is formed in the bottom of the cover plate;

[0008] The slider assembly comprises a slider and a gear assembly, the bottom of the slider is provided with a sliding groove matched with the rack, the upper part of the slider is provided with a second groove for mounting the flow sensor, the gear assembly can drive the cover plate to move close to or away from the slider through the connecting column when the slider slides, so that the first groove on the cover plate can be matched with the second groove on the slider to clamp or release the flow sensor.

[0009] In some embodiments, the gear assembly comprises a first gear, a worm and a second gear, the worm is arranged on the slider in a vertical direction, the first gear is coaxially fixed on the worm and is connected with the side of the rack, the connecting column is provided with a gear matched with the second gear, and the second gear is respectively meshed with the worm and the connecting column.

[0010] In some embodiments, the slider is provided with a mounting hole at a position corresponding to the connecting column, the connecting column is inserted into the mounting hole and can slide in the mounting hole, and an opening for the second gear to mesh with the connecting column is matched and arranged on the side wall of the mounting hole.

[0011] In some embodiments, a plurality of protrusions are arranged on the inner side wall of the mounting hole, and the apexes of the protrusions are in contact with the outer side wall of the connecting column inserted into the mounting hole.

[0012] In some embodiments, a plurality of cams are arranged on the inner side wall of the mounting hole, and the cams are in abutment with the outer side wall of the connecting column inserted into the mounting hole.

[0013] In some embodiments, a locking assembly is further included, which can lock the slider to prevent the slider from sliding on the rack when the slider and the cover plate are close to each other and clamp the flow sensor.

[0014] In some embodiments, the locking assembly comprises a locking piece and a support frame, the support frame is fixed on the slider, the locking piece is rotationally connected with the support frame to form a lever structure, one end of the locking piece is in contact with the rack, the front surface of the other end is provided with a locking button, and the back surface is provided with a spring.

[0015] In some embodiments, a buffer pad is arranged in each of the first groove and the second groove.

[0016] A flow sensor testing method using the clamping device described above, comprising the following steps:

[0017] Placing the flow sensor in the first groove on the slider;

[0018] Pressing the locking button with hand and pushing the slider to slide on the rack, so that the cover plate moves close to the slider and clamps the flow sensor;

[0019] Releasing the locking button.

[0020] In some embodiments, the steps of disassembling and replacing the flow sensor are further included.

[0021] Press the locking button with hand and push the slider to move towards the direction of making the cover plate away from the slider;

[0022] Loosen the locking button, remove the flow sensor, and replace the new flow sensor;

[0023] Press the locking button with hand and push the slider to make the cover plate and the slider clamp the flow sensor, and loosen the locking button.

[0024] Compared with the prior art, the present application has the following advantages and beneficial effects:

[0025] 1. The locking clamp adopts the combination of rack and slider, and converts the sliding of the slider on the rack into the rotation of the gear assembly, and then makes the connecting column meshing with the gear assembly move downward, the connecting column drives the cover plate to move towards the slider, and the flow sensor is clamped and fixed in the first groove and the second groove, realizing the rapid clamping of the flow sensor; the locking clamp has simple structure and can be operated by one hand, and can quickly clamp and fix the flow sensor, achieving the effect of saving time and effort in the case of frequent fixing of the flow sensor.

[0026] 2. The locking assembly of the locking clamp skillfully uses the principle of lever, when the slider needs to slide left and right on the rack, only need to press the locking button, make the locking piece separate from the rack, and the slider can be easily slid; when the slider stays at any position on the rack, loosen the locking button, the locking piece contacts with the rack under the action of the spring, and the slider can be static on the rack, making the clamping of the locking clamp on the flow sensor more stable. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings in the embodiments, and it should be understood that the following drawings only show some embodiments of the present application, and should not be regarded as limiting the scope, and for those skilled in the art, other related drawings can also be obtained without creative labor.

[0028] Figure 1 It is a structure schematic view of the locking clamp in the embodiment of the present application;

[0029] Figure 2 It is a structure schematic view of the separation of the slider assembly and the cover plate assembly of the locking clamp in the embodiment of the present application;

[0030] Figure 3 It is a structure schematic view of the cooperation of the locking clamp and the rack in the embodiment of the present application;

[0031] Figure 4This is a schematic diagram of the clamping structure of the slider assembly and cover plate assembly of the locking clamp in an embodiment of the present invention;

[0032] Figure 5 This is a schematic diagram of the gear assembly and connecting column in an embodiment of the present invention;

[0033] Figure 6 This is a schematic diagram of the structure of the first gear and worm in an embodiment of the present invention;

[0034] Figure 7 This is a schematic diagram of the connecting column in an embodiment of the present invention;

[0035] Figure 8 This is a schematic diagram of the locking assembly in an embodiment of the present invention;

[0036] Figure 9 This is a schematic diagram of the rack structure in an embodiment of the present invention.

[0037] Wherein: 1. Cover plate assembly, 11. Cover plate, 12. Connecting post, 121. Gear tooth, 13. First groove;

[0038] 2. Slider assembly; 21. Slider; 22. Second groove; 23. Slide groove; 24. Mounting hole; 25. Protrusion.

[0039] 3. Gear assembly, 31. First gear, 32. Worm, 33. Second gear;

[0040] 4. Locking assembly; 41. Locking button; 42. Locking plate; 43. Support bracket; 44. Spring;

[0041] 5. Gear rack. Detailed Implementation

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0043] Example 1

[0044] like Figures 1 to 9 As shown, a clamping device for performance testing of flow sensors includes a rack 5, a slider assembly 2, and a cover plate assembly 1.

[0045] The cover plate assembly 1 comprises a cover plate 11 and four connecting columns 12, which are respectively arranged at four corners of the cover plate 11 and are fixedly connected with the cover plate 11 at one end and movably connected with the sliding block assembly 2 at the other end, so that the cover plate 11 can be lifted along the vertical direction on the sliding block 21, and a first groove 13 is formed in the bottom of the cover plate 11 and matched with the flow sensor;

[0046] The sliding block assembly 2 comprises a sliding block 21 and a gear assembly 3, a sliding groove 23 matched with the rack 5 is formed in the bottom of the sliding block 21, a second groove 22 for installing the flow sensor is formed in the upper part of the sliding block 21, and the gear assembly 3 can drive the cover plate 11 to move close to or away from the sliding block 21 through the connecting column 12 when the sliding block 21 slides, so that the first groove 13 on the cover plate 11 can be matched with the second groove 22 on the sliding block 21 to clamp or release the flow sensor.

[0047] The locking clamp adopts the combination of the rack 5 and the sliding block 21, and converts the sliding of the sliding block 21 on the rack 5 into the rotation of the gear assembly 3 through the gear assembly 3, so that the connecting column 12 meshing with the gear assembly 3 moves downward, the connecting column 12 drives the cover plate 11 to move close to the sliding block 21, and the flow sensor is clamped and fixed in the first groove 13 and the second groove 22, so that the flow sensor is quickly clamped; the locking clamp has simple structure and can be operated by one hand, so that the flow sensor can be quickly clamped and fixed, and the effect of saving time and labor is achieved in the case of frequent fixing of the flow sensor.

[0048] Embodiment 2

[0049] As shown in Figure 5 , Figure 6 and Figure 7 , the gear assembly 3 comprises a first gear 31, a worm 32 and a second gear 33, the worm 32 is arranged on the sliding block 21 in the vertical direction, the first gear 31 is coaxially fixed on the worm 32 and is meshingly connected with the side of the rack 5, the connecting column 12 is provided with a gear tooth 121 matched with the second gear 33, and the second gear 33 is meshed with the worm 32 and the connecting column 12, respectively. When the sliding block 21 slides, the first gear 31 will rotate, thereby driving the worm 32 to rotate, the worm 32 drives the second gear 33 to rotate, the second gear 33 drives the connecting column 12 to move up and down, and then drives the cover plate 11 to move close to or away from the sliding block 21.

[0050] An installation hole 24 is arranged at a position corresponding to the connecting column 12 on the sliding block 21, the connecting column 12 is inserted into the installation hole 24, the installation hole 24 limits the connecting column 12, the connecting column 12 can slide in the installation hole 24, and an opening for meshing the second gear 33 with the connecting column 12 is formed in the side wall of the installation hole 24.

[0051] In some embodiments, referring to Figure 5 The inner side wall of the mounting hole 24 is provided with a plurality of protrusions 25, the top of the protrusion 25 is in contact with the outer side wall of the connecting column 12 inserted into the mounting hole 24, and the protrusion 25 is made of a relatively smooth material, so that the connecting column 12 slides more smoothly in the mounting hole 24.

[0052] In some embodiments, the inner side wall of the mounting hole 24 is provided with a plurality of cams, the cam is in abutment with the outer side wall of the connecting column 12 inserted into the mounting hole 24, which is beneficial to the sliding of the connecting column 12 in the mounting hole 24.

[0053] Embodiment 3

[0054] As shown in Figures 1 to 4 A clamping device for performance testing of a flow sensor further comprises a locking assembly 4, which can lock the sliding block 21 to prevent the sliding block 21 from sliding on the rack 5 when the sliding block 21 and the cover plate 11 are close to each other and clamp the flow sensor.

[0055] As shown in Figure 8 The locking assembly 4 comprises a locking piece 42 and a support frame 43, the support frame 43 is fixed on the sliding block 21, and the locking piece 42 is rotationally connected with the support frame 43 to form a lever structure, one end of the locking piece 42 is in contact with the rack 5, and the other end is provided with a locking button 41 on the front surface and a spring 44 on the back surface.

[0056] The locking assembly 4 of the locking clamp skillfully uses the principle of lever, when the sliding block 21 needs to slide left and right on the rack 5, only need to press the locking button 41, make the locking piece 42 separate from the rack 5, then the sliding block 21 can be easily slid; when the sliding block 21 stays at any position on the rack 5, release the locking button 41, the locking piece 42 is in contact with the rack 5 under the action of the spring 44, which can make the sliding block 21 stationary on the rack 5, so that the clamping of the locking clamp on the flow sensor is more stable.

[0057] Embodiment 4

[0058] The first recess 13 and the second recess 22 are both provided with a buffer pad, which can buffer the clamped flow sensor to prevent the flow sensor from being damaged.

[0059] In some embodiments, the buffer pad includes but is not limited to one or more of rubber, sponge, and cotton.

[0060] A flow sensor testing method, comprising the following steps:

[0061] Placing the flow sensor in the first recess 13 on the sliding block 21;

[0062] Press the locking button 41 with hand and push the slider 21 to slide on the rack 5, so that the cover plate 11 is close to the slider 21 and clamps the flow sensor;

[0063] Release the locking button 41.

[0064] The flow sensor testing method further comprises the steps of disassembling and replacing the flow sensor:

[0065] Press the locking button 41 with hand and push the slider 21 to slide on the rack 5, so that the cover plate 11 is close to the slider 21 and clamps the flow sensor;

[0066] Release the locking button 41, remove the flow sensor and replace a new flow sensor;

[0067] Press the locking button 41 with hand and push the slider 21 to slide on the rack 5, so that the cover plate 11 is close to the slider 21 and clamps the flow sensor;

[0068] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0069] In addition, in the description of the present application, the terms "horizontal", "vertical" and the like do not mean that the components must be absolutely horizontal or vertical, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.

[0070] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, if the terms "arrangement", "installation", "connection", "connection" appear, they should be understood in a broad sense, for example, they can be fixedly connected, or can be detachably connected, or integrally connected; can be mechanically connected, or can be electrically connected; can be directly connected, or can be indirectly connected through an intermediate medium; can be connected inside two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0071] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Any simple modification or equivalent change made according to the technical essence of the present application to the above embodiment falls within the protection scope of the present application.

Claims

1. A clamping device for performance testing of flow sensors, characterized in that, Includes rack (5), slider assembly (2) and cover plate assembly (1); The cover plate assembly (1) includes a cover plate (11) and four connecting posts (12). The four connecting posts (12) are respectively located at the four corners of the cover plate (11), and one end of the connecting post (12) is fixedly connected to the cover plate (11), and the other end is movably connected to the slider assembly (2), so that the cover plate (11) can move up and down in the vertical direction on the slider (21). The bottom of the cover plate (11) is provided with a first groove (13) that cooperates with the flow sensor. The slider assembly (2) includes a slider (21) and a gear assembly (3). The bottom of the slider (21) is provided with a groove (23) that cooperates with the rack (5). The upper part of the slider (21) is provided with a second groove (22) for installing a flow sensor. The gear assembly (3) can drive the cover plate (11) to move closer to or further away from the slider (21) through the connecting column (12) when the slider (21) slides, so that the first groove (13) on the cover plate (11) can cooperate with the second groove (22) on the slider (21) to clamp or release the flow sensor.

2. The clamping device for performance testing of flow sensors according to claim 1, characterized in that, The gear assembly (3) includes a first gear (31), a worm (32) and a second gear (33). The worm (32) is rotatably mounted on the slider (21) in the vertical direction. The first gear (31) is coaxially fixed on the worm (32) and meshes with the side of the rack (5). The connecting column (12) is provided with gear teeth (121) that mesh with the second gear (33). The second gear (33) meshes with the worm (32) and the connecting column (12) respectively.

3. The clamping device for performance testing of flow sensors according to claim 1, characterized in that, The slider (21) is provided with a mounting hole (24) at the position corresponding to the connecting post (12). The connecting post (12) is inserted into the mounting hole (24) and can slide in the mounting hole (24). An opening is provided on the side wall of the mounting hole (24) for the second gear (33) to mesh with the connecting post (12).

4. The clamping device for performance testing of flow sensors according to claim 3, characterized in that, Multiple protrusions (25) are provided on the inner sidewall of the mounting hole (24), and the apex of the protrusions (25) contacts the outer sidewall of the connecting post (12) inserted into the mounting hole (24).

5. A clamping device for performance testing of a flow sensor according to claim 3, characterized in that, Multiple cams are provided on the inner sidewall of the mounting hole (24), and the cams abut against the outer sidewall of the connecting post (12) inserted into the mounting hole (24).

6. The clamping device for performance testing of flow sensors according to claim 1, characterized in that, It also includes a locking assembly (4) that can lock the slider (21) to prevent it from sliding on the rack (5) when the slider (21) and the cover plate (11) come close to each other and clamp the flow sensor.

7. A clamping device for performance testing of a flow sensor according to claim 6, characterized in that, The locking assembly (4) includes a locking plate (42) and a support frame (43). The support frame (43) is fixed on the slider (21). The locking plate (42) and the support frame (43) are rotatably connected to form a lever structure. The side of the locking plate (42) connected to the support frame (43) is the reverse side. One end of the locking plate (42) is in contact with the rack (5), and the front of the other end is provided with a locking button (41), and the reverse side is provided with a spring (44).

8. The clamping device for performance testing of flow sensors according to claim 1, characterized in that, Both the first groove (13) and the second groove (22) are provided with buffer pads.

9. A method for testing a flow sensor, characterized in that, The clamping device according to any one of claims 1-8 comprises the following steps: Place the flow sensor in the first groove (13) on the slider (21); Press the locking button (41) with your hand and push the slider (21) to slide on the rack (5) so that the cover plate (11) moves closer to the slider (21) and clamps the flow sensor; Release the locking button (41).

10. The flow sensor testing method according to claim 9, characterized in that, It also includes the steps of disassembling and replacing the flow sensor: Press the locking button (41) with your hand and push the slider in the direction that moves the cover away from the slider; Release the locking button (41), remove the flow sensor, and replace it with a new flow sensor; Press the locking button (41) with your hand and push the slider (21) to clamp the cover and slider onto the flow sensor, then release the locking button (41).

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