A folding triangular weir

Abstract

The utility model relates to a folding triangular weir, including the bottom plate that can fold along the vertical direction, two upper baffles are connected on the bottom plate, two upper baffles are respectively along the horizontal direction and the bottom plate foldable connection, the length of the folding state's tripod weir is one -half of the length of the unfolded state's tripod weir, the width of the folding state's tripod weir is one -half of the width of the unfolded state's tripod weir, when the tripod weir is in the folding state, its length and width are equivalent to half of length and width under the unfolded state, the overall space occupation is only one -fourth of the unfolded state, saves the storage space, the volume is small after folding, and it is convenient to batch stacking transportation and convenient for the user to carry.

Description

Technical Field

[0001] This utility model relates to the field of triangular weirs, and more particularly to a folding triangular weir. Background Technology

[0002] A triangular weir is a type of weir flow meter. A weir flow meter is a device used to measure flow rate in open channels. Its principle is that a weir is installed in the open channel; the water flow is blocked by the weir plate, raising the water level and allowing it to flow over the weir plate. By measuring the water level on one side of the triangular weir, and since there is a certain relationship between the water level and the flow rate, the flow rate can be calculated. However, existing triangular weir structures are all one-piece designs and cannot be flipped or folded, making them inconvenient to carry. Utility Model Content

[0003] The purpose of this invention is to provide a portable, foldable triangular weir.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is: a foldable triangular weir, including a base plate that can be folded vertically, two upper baffles connected to the base plate, the two upper baffles being foldable and connected to the base plate horizontally, the length of the folded triangular weir being half the length of the unfolded triangular weir, and the width of the folded triangular weir being half the width of the unfolded triangular weir.

[0005] Compared with existing technologies, the advantages of this solution are: when the tripod is in the folded state, its length and width are equivalent to half of its length and width in the unfolded state, and the overall space occupied is only one-quarter of that in the unfolded state, saving storage space. The folded size is compact, which is convenient for batch stacking and transportation and easy for users to carry.

[0006] In a preferred embodiment of this application, the bottoms of the two upper baffles are connected to the top of the base plate via a first hinge structure. The first hinge structure is installed on the front surface of the base plate and the upper baffles so that the first hinge structure faces the direction of water flow. At least two rear baffles are fixedly connected to the top of the rear surface of the base plate. When the two upper baffles and the base plate are unfolded, the upper baffles and the rear baffles abut against each other.

[0007] Compared with existing technologies, the beneficial effects of this solution are as follows: During the use of the tripod weir, when the impact force generated by the water flow acts on the two upper baffles, the bottom of the upper baffle and the top of the bottom plate abut against each other, and at the same time, the upper baffle and the rear baffle abut against each other, thereby preventing the upper baffle from rotating around the first hinge structure in the direction of water flow.

[0008] In a preferred embodiment of this application, the base plate includes a first baffle and a second baffle. The left side of the first baffle and the right side of the second baffle are connected by a second hinge structure. When the second hinge structure is installed on the rear surface of the first baffle and the second baffle, the second hinge structure faces away from the water flow direction. Front baffles are provided on the front surfaces of both the first baffle and the second baffle, and the two front baffles are alternately arranged.

[0009] Compared with existing technologies, the beneficial effects of this solution are as follows: During the use of the tripod weir, when the impact force generated by the water flow acts on the first and second baffles, the left side of the first baffle and the right side of the second baffle abut against each other. At the same time, the front baffle on the first baffle and the front surface of the second baffle abut against each other, and the front baffle on the second baffle abuts against the front surface of the first baffle. This prevents the first and second baffles from rotating around the second hinge structure in the direction of water flow.

[0010] In a preferred embodiment of this application, two upper baffles are symmetrically arranged on the base plate, and a drainage surface is inclinedly provided on one side of each upper baffle. When the two upper baffles are in the unfolded state, a discharge groove is formed between the two drainage surfaces.

[0011] Compared with existing technologies, the advantages of this solution are: during use, the discharge trough forms a guiding flow channel; it guides the water flow to be discharged in a concentrated manner, avoiding water flow diffusion or turbulence, and maintaining the stable flow state required for triangular weir measurement.

[0012] In a preferred embodiment of this application, water level scales are etched on the front surfaces of both upper baffles, and water head height and flow rate lookup tables are etched on the rear surfaces of the first and second baffles.

[0013] Compared to existing technologies, the advantages of this solution are: during use, the water level scale is etched on the front surface of the upper baffle and faces the direction of water flow, so the staff can directly observe the water level without bending over or adjusting the angle, reducing reading errors. The water flow rate can be directly calculated from the water head height and flow rate table through the water level scale.

[0014] In addition to the technical problems solved by the present invention, the technical features constituting the technical solutions, and the advantages brought about by the technical features of these technical solutions as described above, other technical problems that the present invention can solve, other technical features contained in the technical solutions, and the advantages brought about by these technical features will be further described in detail with reference to the accompanying drawings. Attached Figure Description

[0015] Figure 1 This is the front view of the foldable triangular weir of this application in its unfolded state.

[0016] Figure 2 This is a rear view of the foldable triangular weir of this application in its unfolded state.

[0017] Figure 3 This is a perspective view of the foldable triangular weir of this application in its folded state.

[0018] Figure 4 This is a schematic diagram of the foldable triangular weir of this application installed in an open channel when it is in the unfolded state.

[0019] Figure 5 This is a schematic diagram of the flow calculation table for the folded triangular weir in this application.

[0020] Explanation of reference numerals: 01. Upper baffle, 02. First hinge structure, 03. Front surface, 04. Drainage surface, 05. Discharge channel, 06. Water level scale, 07. First baffle, 08. Second baffle, 09. Second hinge structure, 10. Water head height and flow rate calculation table, 11. Rear surface, 12. Rear baffle, 13. Front baffle. Detailed Implementation

[0021] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings.

[0022] Please see Figure 1 As shown, the folded triangular weir of this embodiment is used to install in an open channel so that the direction of water flow is perpendicular to the surface of the triangular weir. The water flow is blocked by the triangular weir and the water level rises and passes over the weir plate. By observing the height of the water level when it passes over the triangular weir, the flow rate of the open channel can be measured.

[0023] It includes a base plate and two upper baffles 01 mounted on top of the base plate. The two upper baffles 01 are symmetrically arranged and are foldably connected to the base plate via a first hinge structure 02. The first hinge structure 02 is mounted on the front surface 03 of the base plate and the upper baffles 01. It should be noted that the front surface 03 is the surface that directly contacts the water flow when blocking it, that is, the surface that the water flow first contacts when blocking the water flow (e.g., ...). Figure 4 As shown, drainage surfaces 04 are inclinedly arranged on one side of the upper baffle 01. When the two upper baffles 01 are in the unfolded state, the included angle between the two drainage surfaces 04 is 90°, forming a discharge groove 05 between the two drainage surfaces 04. Since the first hinge structure 02 is installed on the front surface 03 of the base plate and the upper baffle 01, that is, the first hinge structure 02 faces the direction of water flow, when the impact force generated by the water flow acts on the two upper baffles 01 during the use of the tripod weir, the bottom and top of the upper baffle 01 abut against each other. Since at least two rear baffles 12 are fixedly connected to the top of the rear surface 11 of the base plate, when the two upper baffles 01 and the base plate are unfolded, the upper baffles 01 and the rear baffles 12 abut against each other, thereby preventing the upper baffles 01 from rotating around the first hinge structure 02 in the direction of water flow.

[0024] The base plate includes a first baffle 07 and a second baffle 08. One of the aforementioned rear baffles 12 is mounted on the first baffle 07, and the other rear baffle 12 is mounted on the second baffle 08. The left side of the first baffle 07 and the right side of the second baffle 08 are connected by a second hinge structure 09, allowing the base plate to be foldable in the vertical direction. The second hinge structure 09 is mounted on the rear surface 11 of the first baffle 07 and the second baffle 08, positioning the second hinge structure 09 and the first hinge structure 02 on opposite sides of the base plate. The second hinge structure 09 and the first hinge structure 02 have the same structure, and preferably, they are hinges.

[0025] Please see Figure 1 As shown, when the first baffle 07 and the second baffle 08 are in the unfolded state, since the second hinge structure 09 is installed on the rear surface 11 of the first baffle 07 and the second baffle 08, that is, the second hinge structure 09 faces away from the water flow direction, when the impact force generated by the water flow acts on the first baffle 07 and the second baffle 08, the left side of the first baffle 07 and the right side of the second baffle 08 abut against each other. At the same time, front baffles 13 are provided on the front surface 03 of both the first baffle 07 and the second baffle 08. The two front baffles 13 are alternately arranged. The front baffle 13 on the first baffle 07 abuts against the front surface 03 of the second baffle 08, and the front baffle 13 on the second baffle 08 abuts against the front surface 03 of the first baffle 07. This prevents the first baffle 07 and the second baffle 08 from rotating around the second hinge structure 09 in the water flow direction.

[0026] When the tripod weir is in the folded state, the rear surface 11 of the first baffle 07 and the rear surface 11 of the second baffle 08 are in contact with each other, and the front surfaces 03 of the two upper baffles 01 are in contact with the front surfaces 03 of the first baffle 07 and the second baffle 08 respectively (e.g., Figure 3 (As shown). Using the above method, the length and width of the folded triangular weir are the same as the length and width of the first baffle 07. That is, the length of the folded triangular weir is half the length of the unfolded triangular weir, and the width of the folded triangular weir is half the width of the unfolded triangular weir, thus occupying less space. After the user ties the folded triangular weir with rope, it is easier for the user to carry. It should be noted that the aforementioned front surface 03 is the surface that directly contacts the water flow when resisting it.

[0027] Please see Figure 1 As shown, water level markings 06 are etched on the front surfaces of both upper baffles 01. The reference point for these water level markings 06 is the top surface of the base plate. The markings corresponding to the water level markings 06 gradually increase from the bottom to the top of the upper baffles 01. That is, the markings closer to the base plate are smaller, and the markings farther away from the base plate are larger. It should be noted that the markings are specific numerical values.

[0028] Please see Figure 2 As shown, both the rear surface 11 of the first baffle 07 and the rear surface 11 of the second baffle 08 are etched with a head height and flow rate lookup table 10. The data in the head height and flow rate lookup table 10 is obtained according to the flow rate calculation formula of the triangular weir, Q=C*h^(5 / 2), where Q is the flow rate (L / s); h is the water depth (cm), which is the scale marking mentioned above; and C is a coefficient that varies with h, generally taken as 0.014. When the triangular weir is in the deployed state, the head height and flow rate lookup table 10 and the water level scale 06 mentioned above are located on both sides of the triangular weir. In use, the water level can be directly observed through the water level scale 06. By setting the head height and flow rate lookup table 10 on the other side of the triangular weir, it will not be submerged when the water level rises. The head height and flow rate lookup table 10 can be clearly observed on the other side of the triangular weir.

[0029] Therefore, during use, the triangular weir is deployed and then fixed in the open channel, with the weir perpendicular to the water flow direction. When the water flow is blocked by the weir, the water level on one side of the weir rises, and the water flows out through the discharge trough 05. By observing the water level at the position of water level scale 06, the scale mark corresponding to water level scale 06 is read. According to the position of the scale mark in the head height and flow rate lookup table 10, since the flow rate lookup table 10 records the water injection height h (cm) and flow rate Q, two flow rates Q are set according to different units of flow rate Q. One flow rate Q is in the unit (L / s), and the other flow rate Q is in the unit (m³ / H) (e.g. Figure 5 As shown in the figure, the water flow rate of the open channel can be determined based on the water drop height h (cm).

[0030] If the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0031] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Any modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A folding triangular weir, characterized in that, It includes a base plate that can be folded vertically, and two upper baffles connected to the base plate. The two upper baffles can be folded and connected to the base plate horizontally. The length of the tripod in the folded state is half the length of the tripod in the unfolded state, and the width of the tripod in the folded state is half the width of the tripod in the unfolded state.

2. The folded triangular weir according to claim 1, characterized in that: The bottoms of the two upper baffles are connected to the top of the base plate via a first hinge structure. The first hinge structure is installed on the front surface of the base plate and the upper baffles. At least two rear baffles are fixedly connected to the top of the rear surface of the base plate. When the two upper baffles and the base plate are unfolded, the upper baffles and the rear baffles abut against each other.

3. The folding triangular weir according to claim 2, characterized in that: The base plate includes a first baffle and a second baffle. The left side of the first baffle and the right side of the second baffle are connected by a second hinge structure. The second hinge structure is installed on the rear surface of the first baffle and the second baffle. Front baffles are provided on the front surface of both the first baffle and the second baffle, and the two front baffles are alternately arranged.

4. The folding triangular weir according to claim 1, characterized in that: Two upper baffles are symmetrically arranged on the base plate. Each upper baffle has a drainage surface inclined on one side. When the two upper baffles are in the unfolded state, a discharge groove is formed between the two drainage surfaces.

5. The folding triangular weir according to claim 3, characterized in that: Water level markings are etched on the front surfaces of both upper baffles, and water head height and flow rate lookup tables are etched on the rear surfaces of both the first and second baffles.

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