Flow guide flanging structure of box type flow meter

Abstract

The utility model relates to a flow guide turnup structure of a box type flow meter, which comprises a horn-mouth-shaped flow guide cover, a front installation frame used for installing the flow guide cover is arranged at a water inlet of a flow measuring box, the flow guide cover is detachably connected with the front installation frame, the flow guide cover is formed by four turnup section bars in an enclosing mode, and the turnup section bars are connected with the front installation frame. Each flanging profile comprises an arc-shaped flow guide part and a limiting connecting part arranged at one end of the arc-shaped flow guide part, and the limiting connecting parts are assembled and connected with the front mounting frame; the interior of the arc-shaped flow guide part is of a cavity structure, and an inner cavity of the arc-shaped flow guide part is divided into a plurality of small cavities through a plurality of partition plates connected end to end. The arc-shaped flow guide part is of a cavity structure, the weight of the flanging sectional material can be effectively reduced, the multiple partition plates connected end to end in the cavity can play a role in supporting the cavity, and therefore the structural strength of the flanging sectional material is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water metering, in particular to a diversion flanging structure of a box-type flowmeter. Background Art

[0002] An ultrasonic box-type open-channel flowmeter can measure the flow velocity and liquid level parameters of a fluid, and process the flow velocity and water level data to integrate and calculate data such as instantaneous flow rate. This product is based on the time difference method. Ultrasonic transducers are used to send ultrasonic signals in the downstream and upstream directions of the fluid. The transducers receive the ultrasonic signals to obtain time difference information, and an integrator calculates the flow velocity information. The ultrasonic liquid level gauge emits high-frequency ultrasonic pulses from the transducer. When encountering the surface of the measured medium, they are reflected, and the reflected echo is received by the transducer and converted into an electrical signal. The ultrasonic pulse propagates at the speed of sound, and the time interval required from the emission to the reception of the ultrasonic pulse is proportional to the distance from the transducer to the surface of the measured medium.

[0003] When the box-type flowmeter is in use, in order to facilitate the smoother entry of water into the box body, a bell-mouth-shaped diversion cover is installed at the water inlet of the box-type flowmeter. The existing diversion cover is generally processed by stamping a relatively thin metal plate and then welding and assembling it into an integral structure. The main disadvantages of this diversion cover in the use process are mainly in the following two aspects: ① Made of a thin metal plate, the structural strength is low and it is easy to deform under the impact of water flow; ② The diversion cover is a welded integral structure. When a part of the diversion cover is deformed or damaged, it can only be removed and replaced as a whole, resulting in waste.

[0004] Based on the above technical problems, the inventor proposes a diversion flanging structure of a box-type flowmeter, which has the advantages of high structural strength, light weight, and independent replaceability of components. Content of the Utility Model

[0005] The utility model aims at the deficiencies of the prior art and provides a diversion flanging structure of a box-type flowmeter.

[0006] The utility model is realized by the following technical solutions. A diversion flanging structure of a box-type flowmeter is provided, which includes a bell-mouth-shaped diversion cover. A front installation frame for installing the diversion cover is provided at the water inlet of the flow measurement box. The diversion cover is detachably connected to the front installation frame. The diversion cover is surrounded by four flanging profiles. Each flanging profile includes an arc-shaped diversion part and a limit connection part provided at one end of the arc-shaped diversion part. The limit connection part is assembled and connected to the front installation frame; the inside of the arc-shaped diversion part is a cavity structure, and its internal cavity is divided into multiple small chambers by a plurality of partitions connected end to end. The arc-shaped diversion part being a cavity structure can effectively reduce the weight of the flanging profile, and the plurality of partitions connected end to end in the cavity can play a role in supporting the cavity, thereby improving the structural strength of the flanging profile.

[0007] Preferably, the limiting connection part is a dovetail block, and the dovetail block is arranged along the axial direction of each flanging profile.

[0008] Preferably, the front mounting frame includes four frame profiles, each frame profile corresponding to one flanging profile, and a dovetail groove cooperating with the dovetail block is provided on each frame profile. The preliminary limitation of the flow deflector is realized through the cooperation of the dovetail block and the dovetail groove. The flow deflector is composed of four flanging profiles enclosed. The four flanging profiles are independently installed and not in an integral welding form. Therefore, when a part of the flow deflector is deformed or damaged, only the corresponding part of the flanging profile needs to be replaced, avoiding the waste of resources caused by overall replacement.

[0009] Preferably, to increase the firmness of the flow deflector, each flanging profile is fixed to the corresponding frame profile by screws.

[0010] Preferably, the four frame profiles are connected and fixed by bolts, which is also a split installation form. During assembly, first insert each flanging profile into the corresponding frame profile, then fix and assemble the four frame profiles to form the front mounting frame, and finally install the front mounting frame on the flow measurement box.

[0011] Preferably, the arc-shaped flow guiding part, the limiting connection part and the partition in the cavity of each flanging profile are integrally extruded by an extruder.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. The arc-shaped flow guiding part is a cavity structure, which can effectively reduce the weight of the flanging profile. The multiple partitions connected end to end in the cavity can play a role in supporting the cavity, thereby improving the structural strength of the flanging profile.

[0014] 2. The flow deflector is composed of four flanging profiles enclosed. The four flanging profiles are independently installed and not in an integral welding form. Therefore, when a part of the flow deflector is deformed or damaged, only the corresponding part of the flanging profile needs to be replaced, avoiding the waste of resources caused by overall replacement. Brief Description of the Drawings

[0015] Figure 1 It is a three-dimensional view of the connection relationship between the flow deflector and the flow measurement box of the present utility model;

[0016] Figure 2 It is a three-dimensional view of the flow measurement box of the present utility model;

[0017] Figure 3 It is a front view of the flow measurement box of the present utility model in the water inlet direction;

[0018] Figure 4 It is a three-dimensional view of one perspective of the flow deflector of the present utility model;

[0019] Figure 5 It is a three-dimensional view of another perspective of the flow deflector of the present utility model;

[0020] Figure 6 This is the side view of the fairing of the present utility model;

[0021] Figure 7 This is the three-dimensional view of a single flanged profile of the present utility model;

[0022] Figure 8 This is the end view schematic diagram of a single flanged profile of the present utility model;

[0023] Figure 9 This is the horizontal cross-sectional view of the connection relationship between the fairing and the flow measurement box of the present utility model;

[0024] Figure 10 is Figure 9 The partial enlarged structural schematic diagram at position A in

[0025] As shown in the figure:

[0026] 1. Flow measurement box, 2. Front mounting frame, 3. Fairing, 4. Dovetail groove, 5. Flanged profile, 6. Limit connection part, 7. Arc-shaped flow guiding part, 8. Small chamber, 9. Partition board, 10. Frame profile. Specific embodiments

[0027] To clearly illustrate the technical features of this solution, the following is an elaboration of this solution through specific embodiments.

[0028] As Figures 1-10 shown, the present utility model includes a horn-shaped fairing 3. At the water inlet of the flow measurement box 1, there is a front mounting frame 2 for installing the fairing 3. The fairing 3 is detachably connected to the front mounting frame 2. The fairing 3 is composed of four flanged profiles 5 enclosing each other. Each flanged profile 5 includes an arc-shaped flow guiding part 7 and a limit connection part 6 provided at one end of the arc-shaped flow guiding part 7. The limit connection part 6 is assembled and connected to the front mounting frame 2. The inside of the arc-shaped flow guiding part 7 is a cavity structure, and its internal cavity is divided into multiple small chambers 8 by a plurality of partition boards 9 connected end to end. The arc-shaped flow guiding part 7 being a cavity structure can effectively reduce the weight of the flanged profile 5, and the plurality of partition boards 9 connected end to end inside the cavity can play a role in supporting the cavity, thereby enhancing the structural strength of the flanged profile 5.

[0029] In this embodiment, the limiting connection part 6 is a dovetail block, and the dovetail block is arranged along the axial direction of each flanging profile 5. The front mounting frame 2 includes four frame profiles 10, and each frame profile 10 corresponds to one flanging profile 5. A dovetail groove 4 cooperating with the dovetail block is provided on each frame profile 10. The preliminary limitation of the fairing 3 is realized through the cooperation of the dovetail block and the dovetail groove 4. In order to increase the firmness of the fairing 3, each flanging profile 5 and the corresponding frame profile 10 can be further fixed by screws. The fairing 3 is composed of four flanging profiles 5 enclosed. The four flanging profiles 5 are independently installed and not in an integral welding form. Therefore, when a part of the fairing 3 is deformed or damaged, only some flanging profiles 5 need to be replaced, avoiding waste of resources caused by overall replacement.

[0030] In this embodiment, the four frame profiles 10 are fixedly connected by bolts and are also in a split installation form. During assembly, first insert each flanging profile 5 into the corresponding frame profile 10, then fix and assemble the four frame profiles 10 to form the front mounting frame 2, and finally install the front mounting frame 2 on the flow measurement box 1.

[0031] In this embodiment, the arc-shaped flow guiding part 7, the limiting connection part 6 and the partition 9 in the cavity of each flanging profile 5 are integrally extruded by an extruder, which is convenient for forming.

[0032] During specific use, after the fairing 3 and the flow measurement box 1 are assembled, water flow will enter the flow measurement box 1 through the fairing 3. The fairing 3 plays a role in guiding the flow, facilitating the water flow to enter the box body more smoothly.

[0033] Certainly, the above description is not limited to the above examples. The technical features not described in the present invention can be realized by or adopted from the prior art, and will not be elaborated here. The above embodiments and drawings are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. The present invention has been described in detail with reference to the preferred embodiments. Those of ordinary skill in the art should understand that any changes, modifications, additions or substitutions made by those of ordinary skill in the art within the scope of the essence of the present invention do not depart from the purpose of the present invention and should also fall within the scope of the claims of the present invention.

Claims

1. A diversion flanging structure of a box-type flowmeter, characterized in that: It includes a flared flow deflector. A front installation frame for installing the flow deflector is provided at the water inlet of the flow measurement box. The flow deflector is detachably connected to the front installation frame. The flow deflector is composed of four flanged profiles enclosing each other. Each flanged profile includes an arc-shaped flow guiding part and a limit connection part provided at one end of the arc-shaped flow guiding part. The limit connection part is assembled and connected to the front installation frame; the inside of the arc-shaped flow guiding part is a cavity structure, and its internal cavity is divided into multiple small chambers by a plurality of partition plates connected end to end.

2. The flow guiding and flanging structure of a box-type flowmeter according to claim 1, wherein: The limit connection part is a dovetail block, and the dovetail block is arranged along the axial direction of each flanged profile.

3. The diversion flanging structure of a box-type flowmeter according to claim 2, characterized in that: The front installation frame includes four frame profiles, each frame profile corresponding to one flanged profile, and a dovetail groove cooperating with the dovetail block is provided on each frame profile.

4. The flow guiding flanging structure of a box-type flowmeter according to claim 3, characterized in that: Each flanged profile and the corresponding frame profile are fixed by screws.

5. The flow guiding flanging structure of a box-type flowmeter according to claim 4, characterized in that: The four frame profiles are fixedly connected by bolts.

6. The flow guiding flanging structure of a box-type flowmeter according to claim 1, characterized in that: The arc-shaped flow guiding part, the limit connection part of each flanged profile and the partition plates in the cavity are integrally extruded by an extruder.

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