A new type of seepage flow monitoring device considering volume method and water measuring weir method

Abstract

The utility model belongs to the dam safety monitoring technical field of water conservancy and hydropower engineering, especially involves a novel seepage flow monitoring device which takes into account the volume method and the water measuring weir method. Its technical scheme is: a novel seepage flow monitoring device which takes into account the volume method and the water measuring weir method, including weir groove and measuring cup, the weir groove is provided with water gauge, weir plate and baffle in proper order, the baffle is connected with water diversion pipe, and the measuring cup is arranged at the water diversion pipe; the weir groove, weir plate and water gauge constitute conventional water measuring weir and are used for seepage flow monitoring when the flow is greater than or equal to 1L / s; the weir groove, baffle, water diversion pipe and measuring cup constitute volume method seepage flow monitoring device and are used for seepage flow monitoring when the flow is less than 1L / s. The utility model provides a novel seepage flow monitoring device which takes into account the volume method and the water measuring weir method to satisfy the accurate monitoring of seepage flow when the flow is greater than or equal to 1L / s and the flow is less than 1L / s.

Description

Technical Field

[0001] This utility model belongs to the field of dam safety monitoring technology for water conservancy and hydropower projects, and specifically relates to a novel seepage flow monitoring device that combines the volumetric method and the weir method. Background Technology

[0002] Dam safety monitoring serves as the "eyes and ears" for the stable operation of dams and other hydraulic structures and engineering slopes. Through continuous monitoring and data analysis, the dam's operational status can be understood, providing a basis for decision-making regarding the safe operation of hydropower projects. Seepage flow monitoring is a crucial aspect of dam safety monitoring. Seepage flow monitoring devices are deployed according to the specific characteristics of the project to obtain seepage flow data. According to specifications, when the seepage flow is less than 1 L / s, the volumetric method is recommended; when the seepage flow is between 1 L / s and 30 L / s, a right-angled triangular thin-walled weir is preferred; and when the seepage flow is greater than or equal to 30 L / s, a rectangular or trapezoidal thin-walled weir is recommended. However, in actual engineering projects, seepage flow fluctuates continuously with factors such as reservoir water level and rainfall, and the seepage flow at some typical locations can periodically fluctuate around 1 L / s. Currently, right-angled triangular thin-walled weirs are commonly used to measure seepage flow, but when the flow rate is less than 1 L / s, the accuracy of seepage flow monitoring decreases, and the volumetric method cannot completely collect the flow over the weir, nor can it accurately measure the seepage flow. Utility Model Content

[0003] In order to solve the above-mentioned problems in the existing technology, the purpose of this utility model is to provide a new seepage flow monitoring device that combines the volumetric method and the weir method, so as to meet the accurate monitoring of seepage flow when the flow rate is greater than or equal to 1L / s and when the flow rate is less than 1L / s.

[0004] The technical solution adopted in this utility model is as follows: A novel seepage flow monitoring device that combines volumetric and weir methods includes a weir flume and a measuring cup. A water gauge, a weir plate, and a baffle are sequentially arranged within the weir flume, with a water inlet pipe connected to the baffle. The measuring cup is positioned at the water inlet pipe. The weir flume, weir plate, and water gauge form a conventional weir for seepage monitoring when the flow rate is greater than or equal to 1 L / s. The weir flume, baffle, water inlet pipe, and measuring cup also form a volumetric seepage flow monitoring device for seepage monitoring when the flow rate is less than 1 L / s.

[0005] The monitoring device of this invention has a simple structure and can be implemented by simple modification of the traditional water measuring weir. It is easy to manufacture and has low cost. When the flow rate is greater than or equal to 1 L / s, the monitoring device uses the water measuring weir method to monitor the seepage flow. When the flow rate is less than 1 L / s, the device uses the volumetric method to monitor the seepage flow by installing a baffle in the slot. This ensures that the flow rate meets the specifications when fluctuating around 1 L / s, and the seepage flow can be accurately measured.

[0006] This utility model can be applied to drainage channels of hydropower station dams, drainage channels of underground powerhouses, drainage channels of stilling basins, and other parts where the seepage flow is affected by the reservoir water level. It can also be applied to drainage channels of slopes, drainage ditches, and other parts where the seepage flow is affected by rainfall, and has broad application prospects.

[0007] As a preferred embodiment of this utility model, the weir includes a bottom plate and side plates connected to both sides of the bottom plate, with a water gauge mounted on the side plates.

[0008] As a preferred embodiment of this utility model, a slot is provided inside the weir groove, and the baffle is engaged in the slot.

[0009] As a preferred embodiment of this utility model, a sealing strip is provided between the card slot and the baffle.

[0010] As a preferred embodiment of this utility model, the length of the weir channel on the upstream side of the weir plate is not less than 1.5m, and the length of the weir channel on the downstream side of the weir plate is not less than 0.6m.

[0011] As a preferred embodiment of this utility model, the distance between the water gauge and the weir plate is not less than 6 times the maximum water head above the weir, and not less than 1.5m.

[0012] As a preferred embodiment of this utility model, the distance between the baffle and the weir plate is not less than 0.5m.

[0013] As a preferred embodiment of this utility model, the height of the baffle is 1.2 times the height of the weir plate.

[0014] As a preferred embodiment of this utility model, the water inlet pipe is welded to the baffle plate, and the height of the water inlet pipe is 0.8 times the height of the weir plate.

[0015] As a preferred embodiment of this utility model, the measuring cup is used to collect the seepage water discharged from the water pipe, and the corresponding flow rate is obtained by measuring the water volume and dividing it by the water collection time.

[0016] The beneficial effects of this utility model are as follows: The monitoring device of this invention has a simple structure and can be implemented by simple modification of the traditional water measuring weir. It is easy to manufacture and has low cost. When the flow rate is greater than or equal to 1 L / s, the monitoring device uses the water measuring weir method to monitor the seepage flow. When the flow rate is less than 1 L / s, the device uses the volumetric method to monitor the seepage flow by installing a baffle in the slot. This ensures that the flow rate meets the specifications when fluctuating around 1 L / s, and the seepage flow can be accurately measured.

[0017] This utility model can be applied to drainage channels of hydropower station dams, drainage channels of underground powerhouses, drainage channels of stilling basins, and other parts where the seepage flow is affected by the reservoir water level. It can also be applied to drainage channels of slopes, drainage ditches, and other parts where the seepage flow is affected by rainfall, and has broad application prospects. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a partial structural diagram of the present invention; Figure 3 This is a schematic diagram of the baffle structure.

[0019] In the diagram: 1-Weir side plate; 2-Weir bottom plate; 3-Weir plate; 4-Water gauge; 5-Card slot; 6-Baffle; 7-Water inlet pipe; 8-Sealing strip; 9-Measuring cup. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention. It should be noted that, unless otherwise specified, the embodiments and features described in the embodiments of the present invention can be combined with each other.

[0022] like Figures 1-3 As shown in the figure, this embodiment presents a novel seepage flow monitoring device that combines volumetric and weir methods. It includes a weir trough and a measuring cup. A water gauge, a weir plate, and a baffle are sequentially arranged within the weir trough. A water inlet pipe is connected to the baffle plate, and the measuring cup is positioned at the water inlet pipe. The weir trough, weir plate, and water gauge form a conventional weir for seepage monitoring when the flow rate is greater than or equal to 1 L / s. The weir trough, baffle, water inlet pipe, and measuring cup form a volumetric seepage flow monitoring device for seepage monitoring when the flow rate is less than 1 L / s.

[0023] Specifically, the weir includes a bottom plate and side plates 1 connected to both sides of the bottom plate, with a water gauge mounted on the side plates 1.

[0024] The weir channel is provided with a slot, and the baffle is engaged in the slot. A sealing strip is provided between the slot and the baffle.

[0025] Among them, the weir side plate 1 is the main structure of this monitoring device. It is made of stainless steel and forms a weir with the bottom plate of the weir. It plays the role of collecting seepage water. The length is required to be not less than 2m, of which the upstream side of the weir plate is not less than 1.5m and the downstream side of the weir plate is not less than 0.6m.

[0026] The bottom plate of the weir is the main structure of this monitoring device. It is made of stainless steel and together with the side plate 1 of the weir forms the weir, which serves to collect seepage water. The length is required to be no less than 2m, of which the upstream side of the weir plate is no less than 1.5m and the downstream side of the weir plate is no less than 0.6m.

[0027] The weir plate is an important component of this monitoring device. It is made of stainless steel and serves to measure flow rate. Water flows through the weir plate, and the flow rate can be calculated by measuring the head above the weir and applying a formula.

[0028] The water gauge is set on the side plate 1 of the weir channel, at a distance of not less than 6 times the maximum head above the weir and not less than 1.5m. It is mainly used to measure the head above the weir and then calculate the flow rate over the weir.

[0029] The slot is located downstream of the weir channel, at a distance of not less than 0.5m from the weir plate, and is used to install the baffle.

[0030] The baffle is the core component of this monitoring device. It is made of stainless steel and its height is 1.2 times that of the weir plate. It is installed on the weir through a slot and then sealed with a sealing strip to ensure that all water flows out through the water inlet pipe.

[0031] The water inlet pipe is welded to the baffle plate, with a height of 0.8 times that of the weir plate, which guides the flow and facilitates the collection of the flow by the measuring cup.

[0032] The sealing strip is attached to both sides and the bottom of the baffle to provide a seal and ensure that all water flows out through the water pipe.

[0033] The measuring cup is used to collect the seepage water discharged from the water pipe. The flow rate is obtained by measuring the water volume and dividing it by the water collection time.

[0034] The monitoring device of this utility model has a simple structure and can be realized by simple modification of the traditional water measuring weir. It is easy to manufacture and has low cost.

[0035] The monitoring device uses the weir method to monitor seepage flow when the flow rate is greater than or equal to 1 L / s, and uses the volumetric method to monitor seepage flow when the flow rate is less than 1 L / s by installing a baffle in the slot. This ensures that the flow rate meets the specifications when fluctuating around 1 L / s, and the seepage flow is accurately measured.

[0036] This utility model can be applied to drainage channels of hydropower station dams, drainage channels of underground powerhouses, drainage channels of stilling basins, and other parts where the seepage flow is affected by the reservoir water level. It can also be applied to drainage channels of slopes, drainage ditches, and other parts where the seepage flow is affected by rainfall, and has broad application prospects.

[0037] This utility model is not limited to the above-mentioned optional embodiments. Anyone can derive other forms of products under the guidance of this utility model. However, regardless of any changes made in its shape or structure, any technical solution that falls within the scope of the claims of this utility model shall be protected by this utility model.

Claims

1. A new type of seepage flow monitoring device that takes into account both the volumetric method and the water weir method, characterized in that: The device includes a weir and a measuring cup (9). A water gauge (4), a weir plate (3), and a baffle (6) are arranged sequentially inside the weir. A water inlet pipe (7) is connected to the baffle (6), and the measuring cup (9) is placed at the water inlet pipe (7). The weir, weir plate (3), and water gauge (4) form a conventional water measuring weir, which is used for seepage monitoring when the flow rate is greater than or equal to 1 L / s. The weir, baffle (6), water inlet pipe (7), and measuring cup (9) form a volumetric seepage flow monitoring device, which is used for seepage monitoring when the flow rate is less than 1 L / s.

2. The new type of seepage flow monitoring device according to claim 1, characterized in that: The weir includes a bottom plate (2) and side plates (1) connected to both sides of the bottom plate (2), with a water gauge (4) set on the side plate (1).

3. The new type of seepage flow monitoring device according to claim 1, characterized in that: The weir channel is provided with a slot (5), and the baffle (6) is engaged in the slot (5).

4. The new type of seepage flow monitoring device according to claim 3, characterized in that: A sealing strip (8) is provided between the card slot (5) and the baffle (6).

5. The new type of seepage flow monitoring device according to claim 1, characterized in that: The length of the weir channel on the upstream side of the weir plate (3) is not less than 1.5m, and the length of the weir channel on the downstream side of the weir plate (3) is not less than 0.6m.

6. A novel seepage flow monitoring device that combines the volumetric method and the weir method according to claim 1, characterized in that: The distance between the water gauge (4) and the weir plate (3) shall not be less than 6 times the maximum water head above the weir, and shall not be less than 1.5m.

7. A novel seepage flow monitoring device that combines the volumetric method and the weir method according to claim 1, characterized in that: The distance between the baffle (6) and the weir plate (3) is not less than 0.5m.

8. A novel seepage flow monitoring device that combines the volumetric method and the weir method according to claim 1, characterized in that: The height of the baffle (6) is 1.2 times the height of the weir plate (3).

9. A novel seepage flow monitoring device that combines the volumetric method and the weir method according to claim 1, characterized in that: The water inlet pipe (7) is welded to the baffle (6), and the height of the water inlet pipe (7) is 0.8 times the height of the weir plate (3).

10. A novel seepage flow monitoring device that combines the volumetric method and the weir method according to any one of claims 1 to 9, characterized in that: The measuring cup (9) is used to collect the seepage water discharged from the water pipe (7). The flow rate is obtained by measuring the water volume and dividing it by the water collection time.

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