Integrated open channel time difference method ultrasonic flowmeter easy to install

Abstract

The utility model discloses an integrated open channel time difference method ultrasonic flowmeter easy to install, which belongs to the technical field of ultrasonic flowmeters and comprises a Parshall groove, and a moving structure is arranged on the Parshall groove. A limiting structure is arranged on the moving structure; the moving structure comprises a sliding block slidably connected to the outer wall of the Parshall groove, a sliding pipe is installed on the top wall of the sliding block, the bottom wall of the sliding pipe penetrates through the top wall of the sliding block, a moving block is slidably connected to the inner wall of the sliding pipe, and a threaded rod is in threaded connection to the inner wall of the moving block. The bottom wall of the threaded rod is rotationally connected with the inner wall of the sliding block, and the outer wall of the threaded rod is fixedly connected with a first bevel gear. The non-slip mat is screwed to drive the rotating rod to rotate, the rotating rod drives the moving block to move up and down, the moving block drives the flowmeter body to move, and the measuring precision of the flowmeter body is effectively improved by adjusting the distance between the flowmeter body and the water surface.

Description

Technical Field

[0001] The utility model belongs to the technical field of ultrasonic flowmeters, and in particular relates to an integrated and easy-to-install open channel time-difference ultrasonic flowmeter. Background Art

[0002] The open channel time difference ultrasonic flow meter is mainly based on the time difference ultrasonic measurement principle. Multiple flow velocity measurement layers are distributed in the flow measurement section, and ultrasonic water level meters are installed on the channel to measure the water level, and then the water flow section area is calculated. According to the hydraulic model, the flow velocity and water flow section area are combined to finally calculate the water flow section flow.

[0003] For an open channel time difference ultrasonic flow meter, when the water flow velocity is fast or the water surface fluctuation is large, the probe may need to be installed higher to ensure stable signal transmission. However, generally, open channel time difference ultrasonic flow meters are directly fixed, and the water flow velocity and water surface fluctuation are closely related to the environment at that time. Therefore, a fixed open channel time difference ultrasonic flow meter may affect its measurement accuracy.

[0004] In order to solve the above problems, the present application proposes an integrated and easy-to-install open channel time-difference ultrasonic flowmeter. Summary of the invention

[0005] In view of the problems in the related art, the utility model proposes an integrated and easy-to-install open channel time-difference ultrasonic flowmeter to overcome the above technical problems existing in the existing related art.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An integrated and easy-to-install open channel transit time ultrasonic flowmeter comprises a Parshall cell, on which a moving structure is arranged;

[0008] A limited position structure is arranged on the mobile structure;

[0009] The movable structure includes a slider slidably connected to the outer wall of the Parshall slot, a sliding tube is installed on the top wall of the slider, the bottom wall of the sliding tube penetrates the top wall of the slider, the inner wall of the sliding tube is slidably connected to a moving block, the inner wall of the moving block is threadedly connected to a threaded rod, the bottom wall of the threaded rod is rotatably connected to the inner wall of the slider, the outer wall of the threaded rod is fixedly connected to a first bevel gear, the outer wall of the first bevel gear is meshed with a second bevel gear, the inner wall of the second bevel gear is installed with a rotating rod, the outer wall of the rotating rod is rotatably connected to the inner wall of the sliding tube, the moving block is located above the second bevel gear, the top wall of the moving block is installed with a connecting block, and the limiting structure includes a flowmeter body inserted into the inner wall of the connecting block.

[0010] The inner wall of the slider is threadedly connected with a bolt, and the outer wall of the bolt is threadedly connected with the inner wall of the Parshall slot. The slider is fixed to a certain extent by arranging the bolt.

[0011] A fixing block is installed on the bottom wall of the sliding block, and the outer wall of the fixing block is slidably connected to the inner wall of the Parshall slot. By providing the fixing block, the movement effect of the sliding block is effectively improved.

[0012] An anti-skid pad is installed on the side of the rotating rod away from the second bevel gear, and the anti-skid pad is located above the Parshall groove. By providing the anti-skid pad, the rotating rod can be effectively prevented from falling off the palm of the hand.

[0013] A hollow tube is installed on the top wall of the connecting block, and the flowmeter body is located in the internal position of the hollow tube. The outer wall of the flowmeter body fits with the outer wall of the abutment block. A sliding rod is installed on the side of the abutment block away from the flowmeter body, and the outer wall of the sliding rod is slidably connected with the inner wall of the hollow tube. An annular groove is provided on the side of the hollow tube away from the flowmeter body, and a clamping block is installed on the side of the sliding rod away from the abutment block. A spring is placed on the inner wall of the clamping block, and the clamping block and the spring are located inside the annular groove provided in the hollow tube. By setting the hollow tube, the flowmeter body can be effectively fixed to a certain extent.

[0014] In summary, the technical effects and advantages of the utility model are as follows: the integrated and easy-to-install open channel time difference ultrasonic flow meter,

[0015] 1. By setting up a mobile structure, the anti-slip pad is turned to drive the rotating rod to rotate, the rotating rod drives the moving block to move up and down, and the moving block drives the flow meter body to move. By adjusting the distance between the flow meter body and the water surface, the measurement accuracy of the flow meter body is effectively improved.

[0016] 2. By setting a limit structure, the flow meter body drives the spring to expand through the abutment block. When the flow meter body is fully inserted into the connecting block, the abutment block fixes the flow meter body to a certain extent through the force of the spring, which effectively improves the installation and disassembly of the flow meter body. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the bolt and rotating rod structure of the utility model;

[0019] Figure 3 This is a schematic cross-sectional view of the internal structure of the sliding tube of the utility model;

[0020] Figure 4 It is a schematic diagram of the limiting structure of the utility model.

[0021] In the figure:

[0022] 1. Parshall trough;

[0023] 2. Moving structure; 201. Sliding block; 202. Sliding tube; 203. Moving block; 204. Threaded rod; 205. First bevel gear; 206. Second bevel gear; 207. Rotating rod; 208. Bolt; 209. Anti-skid pad; 210. Connecting block; 211. Fixed block;

[0024] 3. Limiting structure; 301. Flow meter body; 302. Hollow tube; 303. Sliding rod; 304. Abutment block; 305. Clamping block; 306. Annular groove; 307. Spring. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1-3 An integrated and easy-to-install open channel time-difference ultrasonic flowmeter comprises a Parshall trough 1, on which a moving structure 2 is arranged, and the moving structure 2 comprises a slider 201 slidably connected to the outer wall of the Parshall trough 1, and there are two sliders 201, which are symmetrically installed on both sides of the Parshall trough 1, and a sliding tube 202 is installed on the top wall of each slider 201, and the bottom wall of the sliding tube 202 penetrates the top wall of the slider 201, and the inner wall of each sliding tube 202 is slidably connected to a moving block 203.

[0027] The inner wall of each moving block 203 is threadedly connected to a threaded rod 204, the bottom wall of the threaded rod 204 is rotatably connected to the inner wall of the slider 201, the threaded rod 204 is located on the left side of the moving block 203, the outer wall of the threaded rod 204 is fixedly connected to the first bevel gear 205, the outer wall of the first bevel gear 205 is meshed with the second bevel gear 206, the inner wall of the second bevel gear 206 is installed with a rotating rod 207, the outer wall of the rotating rod 207 is rotatably connected to the inner wall of the sliding tube 202, screwing the rotating rod 207 drives the first bevel gear 205 to rotate, the first bevel gear 205 drives the threaded rod 204 to rotate, and the threaded rod 204 drives the moving block 203 to move up and down.

[0028] The moving block 203 is located above the second bevel gear 206, and a connecting block 210 is installed on the top wall of the moving block 203. A limiting structure 3 is arranged on the moving structure 2, and the limiting structure 3 includes a flowmeter body 301 inserted into the inner wall of the connecting block 210. By inserting the limiting structure 3 in the exact center of the connecting block 210, the detection accuracy of the flowmeter body 301 is effectively improved.

[0029] The inner wall of each slider 201 is threadedly connected with a bolt 208, and the outer wall of the bolt 208 is threadedly connected to the inner wall of the Parshall slot 1. After the slider 201 is moved to a suitable position, the bolt 208 is screwed to fix the slider 201. A fixing block 211 is installed on the bottom wall of the slider 201. The outer wall of the fixing block 211 is slidably connected to the inner wall of the Parshall slot 1, and the fixing block 211 is slidably connected to the top wall of the Parshall slot 1. The setting of the fixing block 211 effectively improves the stability of the slider 201 during movement. An anti-skid pad 209 is installed on the side of the rotating rod 207 away from the second bevel gear 206. The anti-skid pad 209 is located above the Parshall slot 1. The setting of the anti-skid pad 209 can effectively avoid the problem of detachment when the personnel is turning the rotating rod 207.

[0030] Reference Figure 2 and Figure 4 , a hollow tube 302 is installed on the top wall of the connecting block 210, the flow meter body 301 is located inside the hollow tube 302, the outer wall of the flow meter body 301 is in contact with the outer wall of the abutment block 304, the abutment block 304 is made of rubber, which effectively avoids certain wear on the flow meter body 301. A slide bar 303 is installed on the side of the abutment block 304 away from the flow meter body 301, the outer wall of the slide bar 303 is slidably connected with the inner wall of the hollow tube 302, an annular groove 306 is provided on the side of the hollow tube 302 away from the flow meter body 301, and one end of the slide bar 303 away from the abutment block 304 is located in the annular groove 306 provided in the hollow tube 302.

[0031] A clamping block 305 is installed on the side of the slide bar 303 away from the abutment block 304, and a spring 307 is placed on the inner wall of the clamping block 305. The clamping block 305 and the spring 307 are located inside the annular groove 306 opened in the hollow tube 302. In the process of inserting the flow meter body 301 into the connecting block 210, the flow meter body 301 first contacts the abutment block 304, and the abutment block 304 drives the slide bar 303 and the clamping block 305 to slide outward, and drives the spring 307 to expand during the sliding process. When the flow meter body 301 is fully inserted into the connecting block 210, the abutment block 304 fixes the flow meter body 301 to a certain extent through the force of the spring 307.

[0032] Working principle:

[0033] During the process of inserting the flowmeter body 301 into the connecting block 210, the flowmeter body 301 first contacts the abutment block 304, and the abutment block 304 drives the slide rod 303 and the clamping block 305 to slide outward, driving the spring 307 to expand during the sliding process. When the flowmeter body 301 is fully inserted into the connecting block 210, the abutment block 304 fixes the flowmeter body 301 to a certain extent through the force of the spring 307, thereby effectively improving the installation and disassembly of the flowmeter body 301.

[0034] Then, by twisting the anti-slip pad 209, the rotating rod 207 is driven to rotate, the rotating rod 207 drives the second bevel gear 206 to rotate, the second bevel gear 206 drives the first bevel gear 205 to rotate, the first bevel gear 205 drives the threaded rod 204 to rotate, the threaded rod 204 drives the moving block 203 to move up and down, and the moving block 203 drives the flow meter body 301 to move. By adjusting the distance between the flow meter body 301 and the water surface, the measurement accuracy of the flow meter body 301 is effectively improved.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integrated and easy-to-install open channel transit time ultrasonic flow meter, comprising a Parshall cell (1), characterized in that: The Parshall cell (1) is provided with a moving structure (2); A limiting structure (3) is provided on the moving structure (2); The moving structure (2) comprises a slider (201) slidably connected to the outer wall of the Parshall trough (1); a sliding tube (202) is installed on the top wall of the slider (201); the bottom wall of the sliding tube (202) penetrates the top wall of the slider (201); a moving block (203) is slidably connected to the inner wall of the sliding tube (202); a threaded rod (204) is threadedly connected to the inner wall of the moving block (203); the bottom wall of the threaded rod (204) is rotatably connected to the inner wall of the slider (201); and the outer wall of the threaded rod (204) is fixedly connected to A first bevel gear (205), the outer wall of the first bevel gear (205) is meshed with a second bevel gear (206), the inner wall of the second bevel gear (206) is mounted with a rotating rod (207), the outer wall of the rotating rod (207) is rotatably connected to the inner wall of the sliding tube (202), the moving block (203) is located above the second bevel gear (206), the top wall of the moving block (203) is mounted with a connecting block (210), and the limiting structure (3) comprises a flow meter body (301) inserted into the inner wall of the connecting block (210).

2. The integrated and easy-to-install open channel transit time ultrasonic flowmeter according to claim 1, characterized in that: The inner wall of the sliding block (201) is threadedly connected to a bolt (208), and the outer wall of the bolt (208) is threadedly connected to the inner wall of the Parshall trough (1).

3. The integrated and easy-to-install open channel transit time ultrasonic flowmeter according to claim 1, characterized in that: A fixing block (211) is mounted on the bottom wall of the sliding block (201), and an outer wall of the fixing block (211) is slidably connected to an inner wall of the Parshall trough (1).

4. The integrated and easy-to-install open channel transit time ultrasonic flowmeter according to claim 1, characterized in that: An anti-skid pad (209) is installed on a side of the rotating rod (207) away from the second bevel gear (206), and the anti-skid pad (209) is located above the Parshall groove (1).

5. The integrated and easy-to-install open channel transit time ultrasonic flowmeter according to claim 1, characterized in that: A hollow tube (302) is installed on the top wall of the connecting block (210); the flow meter body (301) is located inside the hollow tube (302); the outer wall of the flow meter body (301) is in contact with the outer wall of the abutting block (304); a sliding rod (303) is installed on the side of the abutting block (304) away from the flow meter body (301); the outer wall of the sliding rod (303) is slidably connected to the inner wall of the hollow tube (302); an annular groove (306) is provided on the side of the hollow tube (302) away from the flow meter body (301); a clamping block (305) is installed on the side of the sliding rod (303) away from the abutting block (304); a spring (307) is placed on the inner wall of the clamping block (305); and the clamping block (305) and the spring (307) are located inside the annular groove (306) provided in the hollow tube (302).

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