Triangular weir metering device

Abstract

The utility model provides a triangular weir metering device which comprises a water flow box body, a first Tesla valve plate, a second Tesla valve plate and a third slow flow baffle are respectively arranged in the water flow box body, and the first Tesla valve plate, the second Tesla valve plate and the third slow flow baffle are respectively and sequentially arranged at intervals along the length direction of the water flow box body. The third slow flow baffle is close to the water outlet end plate of the water flow box body, and a triangular weir crest is arranged at the upper end of the water outlet end plate. The triangular weir metering device provided by the utility model is convenient and quick to install, solves the problem that the existing triangular weir needs to be provided with a long-distance water flow channel to stabilize water flow, and improves the working efficiency of measurement and calculation.

Description

Technical Field

[0001] The utility model relates to the technical field of water flow measurement, in particular to a triangular weir metering device. Background Art

[0002] When measuring the flow of uncertain water flows, some flow rates are extremely fast, some are very slow, and some have a narrow range for measurement. The water flow environment in these special cases cannot provide a stable water flow to the triangular weir. Therefore, the existing technology usually requires the setting of a long-distance water flow channel to stabilize the water flow and then use the triangular weir metering equipment to measure the flow. This flow measurement method is not only inconvenient to operate, but also seriously affects the efficiency of the measurement work. Utility Model Content

[0003] The utility model aims to provide a triangular weir metering device, which can solve the problem that the existing triangular weir needs to set a long-distance water flow channel to stabilize the water flow.

[0004] The utility model provides a triangular weir metering device, comprising a water flow box, wherein a first Tesla valve plate, a second Tesla valve plate and a third slow flow baffle are respectively arranged in the water flow box, the first Tesla valve plate, the second Tesla valve plate and the third slow flow baffle are respectively arranged in sequence and at intervals along the length direction of the water flow box, the third slow flow baffle is close to the water outlet end plate of the water flow box, and a triangular weir is provided at the upper end of the water outlet end plate.

[0005] According to a triangular weir metering device provided by the utility model, the water flow box body includes a bottom plate, a water receiving end plate, a left flow limiting plate, a right flow limiting plate and the water outlet end plate, the left flow limiting plate and the right flow limiting plate are parallel to each other, and the water receiving end plate and the water outlet end plate are parallel to each other, so that the bottom plate, the water receiving end plate, the left flow limiting plate, the right flow limiting plate and the water outlet end plate enclose a rectangular box body with an open upper end.

[0006] According to a triangular weir metering device provided by the utility model, the first Tesla valve plate, the second Tesla valve plate and the third slow flow baffle are respectively arranged in sequence and spaced apart along the length direction of the left flow limiting plate.

[0007] According to a triangular weir metering device provided by the utility model, the first Tesla valve plate is an arc-shaped plate protruding toward the water outlet end plate, and the second Tesla valve plate is an arc-shaped plate protruding toward the water outlet end plate.

[0008] According to a triangular weir metering device provided by the utility model, the lower end of the first Tesla valve plate is connected and fixed to the bottom plate, the right side of the first Tesla valve plate is connected and fixed to the right flow limiting plate, and a first flow reduction channel is formed between the left side of the first Tesla valve plate and the left flow limiting plate.

[0009] According to a triangular weir metering device provided by the utility model, the upper end of the first Tesla valve plate is lower than the upper end of the water flow box.

[0010] According to a triangular weir metering device provided by the utility model, the lower end of the second Tesla valve plate is connected and fixed to the bottom plate, the left side of the second Tesla valve plate is connected and fixed to the left flow limiting plate, and a second flow reduction channel is formed between the right side of the second Tesla valve plate and the right flow limiting plate.

[0011] According to a triangular weir metering device provided by the utility model, the upper end of the second Tesla valve plate is flush with the upper end of the water flow box.

[0012] According to a triangular weir metering device provided by the utility model, the third slow flow baffle is a flat plate, and the two ends of the third slow flow baffle are respectively vertically connected to the left flow limiting plate and the right flow limiting plate; the upper end of the third slow flow baffle is flush with the upper end of the water flow box, and the lower end of the third slow flow baffle is located at 1 / 2 the height of the water flow box, so that a third slow flow channel is formed between the third slow flow baffle and the bottom plate.

[0013] According to a triangular weir metering device provided by the utility model, a first liquid level is installed on the upper end of the third slow-flow baffle, and a second liquid level is installed on the upper end of the water flow box, and the directions of the first liquid level and the second liquid level are perpendicular to each other.

[0014] The triangular weir metering device provided by the utility model is characterized in that a first Tesla valve plate, a second Tesla valve plate and a third slow-flow baffle are respectively arranged in a water flow box body, and the first Tesla valve plate, the second Tesla valve plate and the third slow-flow baffle are respectively arranged in sequence and spaced along the length direction of the water flow box body, wherein the third slow-flow baffle is close to the water outlet end plate of the water flow box body, and a triangular weir is arranged at the upper end of the water outlet end plate, so that the water flow connected to the water flow box body can be decelerated and slowed down three times to become a stable low-speed water flow, and then flow out through the triangular weir. That is, when irregular water flows such as slurry running, water gushing, and water outflow from pipes with unstable flow rates are found, and it is necessary to measure the flow rate of the water flow with unstable flow rates, the triangular weir metering device can be installed horizontally in the direction of the water flow, and the water flow outlets in other directions of the water flow can be blocked, and the water flow can be completely connected to the water flow box. The water flow connected to the water flow box passes through the first Tesla valve plate, the second Tesla valve plate, and the third slow flow baffle in turn to slow down and become a stable low-speed water flow, and then flows out through the triangular weir, which is convenient for subsequent measurement of the liquid level, and then the real-time flow can be read through the flow comparison card. Therefore, the triangular weir metering device provided by the utility model is not only easy and quick to install, but also portable and reusable, which solves the problem that the existing triangular weir needs to set up a long-distance water flow channel to stabilize the water flow, and improves the efficiency of the measurement work. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0016] Figure 1 This is an axonometric diagram of the triangular weir metering device of the utility model;

[0017] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at point A;

[0018] Figure 3 It is a top view of the triangular weir metering device of the utility model.

[0019] Description of reference numerals:

[0020] 1. Water flow box; 101. Bottom plate; 102. Water receiving end plate; 103. Left flow limiting plate; 104. Right flow limiting plate; 105. Water outlet end plate; 106. Triangular weir;

[0021] 2. The first Tesla valve plate; 3. The second Tesla valve plate; 4. The third slow-flow baffle; 5. The first liquid level; 6. The second liquid level. DETAILED DESCRIPTION

[0022] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0025] like Figures 1 to 3As shown, the triangular weir metering device of the utility model embodiment includes a water flow box 1, in which a first Tesla valve plate 2, a second Tesla valve plate 3 and a third slow flow baffle 4 are respectively arranged, and the first Tesla valve plate 2, the second Tesla valve plate 3 and the third slow flow baffle 4 are respectively arranged in sequence along the length direction of the water flow box 1, wherein the third slow flow baffle 4 is close to the water outlet end plate 105 of the water flow box 1, and a triangular weir 106 is provided at the upper end of the water outlet end plate 105, so that the water flow connected to the water flow box 1 can be decelerated and slowed down three times to become a stable low-speed water flow, and then flow out through the triangular weir 106, which is convenient for flow measurement.

[0026] When irregular water flows such as slurry running, water gushing, and water outflow from pipes with unstable flow rates are found, and it is necessary to measure the flow rate of the water flow with unstable flow rates, the triangular weir metering device can be installed horizontally in the direction of the water flow, and the water flow outlets in other directions of the water flow can be blocked, and the water flow can be completely connected to the water flow box 1. The water flow connected to the water flow box 1 passes through the first Tesla valve plate 2, the second Tesla valve plate 3 and the third slow flow baffle 4 in sequence to slow down and become a stable low-speed water flow, and then flows out through the triangular weir 106, so as to facilitate the subsequent measurement of the liquid level, and then read the real-time flow through the flow comparison card.

[0027] Therefore, the triangular weir metering device of the embodiment of the utility model is not only easy and quick to install, but also movable and reusable, which solves the problem that the existing triangular weir needs to set up a long-distance water flow channel to stabilize the water flow, improves the measurement work efficiency, and improves the measurement accuracy.

[0028] Specifically, the triangular weir 106 is in the shape of an isosceles straight triangle.

[0029] Specifically, a first liquid level 5 is installed on the upper end of the third slow-flow baffle 4, and a second liquid level 6 is installed on the upper end of the water flow box 1. The directions of the first liquid level 5 and the second liquid level 6 are perpendicular to each other. By setting the first liquid level 5 and the second liquid level 6 in two different directions, it is used to correct the bottom surface level of the water flow box 1 when installing the triangular weir metering device.

[0030] In some embodiments of the utility model, the water flow box 1 includes a bottom plate 101, a water receiving end plate 102, a left flow limiting plate 103, a right flow limiting plate 104 and a water outlet end plate 105, the left flow limiting plate 103 and the right flow limiting plate 104 are parallel to each other, and the water receiving end plate 102 and the water outlet end plate 105 are parallel to each other, so that the bottom plate 101, the water receiving end plate 102, the left flow limiting plate 103, the right flow limiting plate 104 and the water outlet end plate 105 enclose a rectangular box with an open upper end. Among them, the first Tesla valve plate 2, the second Tesla valve plate 3 and the third slow-flow baffle 4 are respectively arranged in sequence along the length direction of the left flow limiting plate 103, and the first Tesla valve plate 2 is close to the water receiving end plate 102, so that a water flow inlet is formed between the first Tesla valve plate 2 and the water receiving end plate 102, and the water flow with uncertain flow rate enters the water flow box 1 through the water flow inlet, and then passes through the first Tesla valve plate 2, the second Tesla valve plate 3 and the third slow-flow baffle 4 in sequence to slow down and slow down the flow, and then flows out through the triangular weir 106 on the water outlet end plate 105.

[0031] The second liquid level gauge 6 is arranged on the upper end of the right flow limiting plate 104 of the water flow box 1 .

[0032] Specifically, the first Tesla valve plate 2 is an arc-shaped plate protruding toward the water outlet end plate 105, and the second Tesla valve plate 3 is an arc-shaped plate protruding toward the water outlet end plate 105. That is, the structures of the first Tesla valve plate 2 and the second Tesla valve plate 3 are both designed using the principle of the Tesla valve.

[0033] Specifically, the lower end of the first Tesla valve plate 2 is connected and fixed to the bottom plate 101, the right side of the first Tesla valve plate 2 is connected and fixed to the right flow limiting plate 104, and the first flow reduction channel is formed between the left side of the first Tesla valve plate 2 and the left flow limiting plate 103. Among them, the upper end of the first Tesla valve plate 2 is lower than the upper end of the water flow box 1. That is, by setting the first Tesla valve plate 2, the water flow connected to the water flow box 1 can be subjected to the first flow velocity reduction treatment.

[0034] Specifically, the lower end of the second Tesla valve plate 3 is connected and fixed to the bottom plate 101, the left side of the second Tesla valve plate 3 is connected and fixed to the left flow limiting plate 103, and the right side of the second Tesla valve plate 3 forms a second flow reduction channel with the right flow limiting plate 104. The upper end of the second Tesla valve plate 3 is flush with the upper end of the water flow box 1. That is, by setting the second Tesla valve plate 3, the water flow connected to the water flow box 1 can be subjected to a second flow velocity reduction treatment.

[0035] Specifically, the third slow-flow baffle 4 is a flat plate, and the two ends of the third slow-flow baffle 4 are respectively vertically connected to the left flow limiting plate 103 and the right flow limiting plate 104. The upper end of the third slow-flow baffle 4 is flush with the upper end of the water flow box 1, and the lower end of the third slow-flow baffle 4 is located at 1 / 2 of the height of the water flow box 1, so that a third slow-flow channel is formed between the third slow-flow baffle 4 and the bottom plate 101. That is, the setting form of the third slow-flow baffle 4 is designed using the principle of the communicating vessel, and by setting the third slow-flow baffle 4, the water flow connected to the water flow box 1 can be subjected to a third flow velocity slowing process.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A triangular weir metering device, characterized in that: It includes a water flow box body, in which a first Tesla valve plate, a second Tesla valve plate and a third slow-flow baffle are respectively arranged, the first Tesla valve plate, the second Tesla valve plate and the third slow-flow baffle are respectively arranged in sequence along the length direction of the water flow box body, the third slow-flow baffle is close to the water outlet end plate of the water flow box body, and a triangular weir is provided at the upper end of the water outlet end plate.

2. The triangular weir metering device according to claim 1, characterized in that: The water flow box includes a bottom plate, a water receiving end plate, a left flow limiting plate, a right flow limiting plate and the water outlet end plate. The left flow limiting plate is parallel to the right flow limiting plate, and the water receiving end plate is parallel to the water outlet end plate, so that the bottom plate, the water receiving end plate, the left flow limiting plate, the right flow limiting plate and the water outlet end plate enclose a rectangular box with an open upper end.

3. The triangular weir metering device according to claim 2, characterized in that: The first Tesla valve plate, the second Tesla valve plate and the third slow flow baffle are respectively arranged in sequence and at intervals along the length direction of the left flow limiting plate.

4. The triangular weir metering device according to claim 2, characterized in that: The first Tesla valve plate is an arc-shaped plate protruding toward the water outlet end plate, and the second Tesla valve plate is an arc-shaped plate protruding toward the water outlet end plate.

5. The triangular weir metering device according to claim 4, characterized in that: The lower end of the first Tesla valve plate is connected and fixed to the bottom plate, the right side of the first Tesla valve plate is connected and fixed to the right flow limiting plate, and a first flow reduction channel is formed between the left side of the first Tesla valve plate and the left flow limiting plate.

6. The triangular weir metering device according to claim 5, characterized in that: The upper end of the first Tesla valve plate is lower than the upper end of the water flow box.

7. The triangular weir metering device according to claim 4, characterized in that: The lower end of the second Tesla valve plate is connected and fixed to the bottom plate, the left side of the second Tesla valve plate is connected and fixed to the left flow limiting plate, and a second flow reduction channel is formed between the right side of the second Tesla valve plate and the right flow limiting plate.

8. The triangular weir metering device according to claim 7, characterized in that: The upper end of the second Tesla valve plate is flush with the upper end of the water flow box.

9. The triangular weir metering device according to claim 2, characterized in that: The third slow flow baffle is a flat plate, and the two ends of the third slow flow baffle are respectively vertically connected to the left flow limiting plate and the right flow limiting plate; the upper end of the third slow flow baffle is flush with the upper end of the water flow box, and the lower end of the third slow flow baffle is located at 1 / 2 the height of the water flow box, so that a third slow flow channel is formed between the third slow flow baffle and the bottom plate.

10. The triangular weir metering device according to any one of claims 1 to 9, characterized in that: A first liquid level is installed at the upper end of the third slow-flow baffle, and a second liquid level is installed at the upper end of the water flow box. The directions of the first liquid level and the second liquid level are perpendicular to each other.

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