Graded throttling regulation and control device for flow of water inlet pipe

Abstract

The utility model discloses a water inlet pipe flow grading throttling regulation and control device which comprises a water inlet main pipe which comprises a first water inlet main pipe section, a second water inlet main pipe section communicated with the first water inlet main pipe section, a third water inlet main pipe section communicated with the second water inlet main pipe section and a fourth water inlet main pipe section communicated with the first water inlet main pipe section. The fourth water inlet main pipe section is arranged on the dam, the first water inlet main pipe section is obliquely arranged on the slope of the dam, the second water inlet main pipe section is arranged above the bottom of the dam, the fourth water inlet main pipe section is arranged inside the bottom of the dam, and an outlet of the fourth water inlet main pipe section extends out of the dam; the bottom of the first water inlet main pipe section is communicated with the bottom of the second water inlet main pipe section through a first throttling pipe, and the lower portion of the first water inlet main pipe section is communicated with the upper portion of the second water inlet main pipe section through a second throttling pipe. The device overcomes the problems of inaccurate flow regulation and control, poor stability, limited application range and the like in the aspect of flow regulation and control of the water inlet pipe.

Description

Technical Field

[0001] This utility model relates to a graded throttling control device for water inlet pipe flow, belonging to the technical field of graded throttling control for water inlet pipe flow. Background Technology

[0002] Currently, some water treatment plants in my country use gravity water intake from elevated reservoirs, utilizing the hydraulic elevation difference between the reservoir and the water treatment plant to achieve pump-free water delivery. However, this system has significant drawbacks in flow regulation: traditional methods typically control flow by connecting multiple valves in series, but the adjustment range of a single valve is limited, its accuracy is low, and it is prone to wear or damage due to frequent operation. Furthermore, it cannot achieve automatic and precise control, making it difficult to match the dynamic water demand of the downstream water treatment system, especially during off-peak production conditions, which can easily lead to inlet overflow problems and pose safety hazards. In addition, the multi-valve series schemes used in existing technologies are structurally complex, have high modification and maintenance costs, and are difficult to achieve wide-range graded flow regulation under full-pipe pressure flow conditions.

[0003] Therefore, there is an urgent need for a simple, precise, and applicable inlet pipe flow rate grading and throttling control device suitable for full-pipe pressure flow pipelines, in order to solve the problems of inaccurate flow rate control, poor stability, and limited applicability in existing technologies. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a graded throttling control device for inlet pipe flow, which overcomes problems such as inaccurate flow control, poor stability, and limited applicability in inlet pipe flow control. It is suitable for throttling control of pipeline flow under full-pipe pressure flow conditions.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] A flow rate throttling and control device for an inlet pipe includes a main inlet pipe. The main inlet pipe includes a first main inlet pipe section, a second main inlet pipe section connected to the first main inlet pipe section, a third main inlet pipe section connected to the second main inlet pipe section, and a fourth main inlet pipe section connected to the first main inlet pipe section. The fourth main inlet pipe section is located on a dam. The first main inlet pipe section is inclinedly located on the slope of the dam. The second main inlet pipe section is located above the bottom of the dam. The fourth main inlet pipe section is located inside the bottom of the dam, and its outlet extends outside the dam. The bottom of the first main inlet pipe section and the bottom of the second main inlet pipe section are connected by a first throttling pipe, and the lower part of the first main inlet pipe section and the upper part of the second main inlet pipe section are connected by a second throttling pipe.

[0007] In one embodiment of this utility model, a first electric gate valve is provided near the first inlet main pipe section of the first throttling pipe, and a second electric butterfly valve is provided near the second inlet main pipe section of the first throttling pipe.

[0008] In one embodiment of this utility model, a manual drain valve is provided at the bottom of the first throttling tube.

[0009] In one embodiment of this utility model, a second electric gate valve is provided near the first main inlet pipe section of the second throttling pipe, and a first electric butterfly valve is provided near the second main inlet pipe section of the second throttling pipe.

[0010] In one embodiment of this utility model, the second throttling pipe is mounted on the second inlet main pipe section via a support frame.

[0011] In one embodiment of this utility model, a protective railing and a first exhaust valve are provided on the first water inlet main section.

[0012] In one embodiment of this utility model, a second vent valve is provided on the second water inlet main section.

[0013] In one embodiment of this utility model, the inner diameter of the second throttling tube is larger than the inner diameter of the first throttling tube.

[0014] In one embodiment of this utility model, the inner diameter of the second throttling pipe is smaller than the inner diameter of the main water inlet pipe.

[0015] In one embodiment of this utility model, the main water inlet pipe is provided with an electric gate valve, which is located in the second main water inlet pipe section near the first main water inlet pipe section.

[0016] The beneficial effects of this utility model are as follows:

[0017] Simple structure and easy implementation: This utility model can be modified by setting up a throttling pipe with a graded diameter reduction and matching electric valve assembly. Only a few valves need to be added to the existing or newly built water inlet pipeline to complete the modification. There is no need for complex structural reorganization, which significantly reduces construction and maintenance costs.

[0018] Graded control with a wide range: This utility model features a two-stage throttling valve assembly on the main inlet pipe, which can be opened independently or collaboratively. Each throttling valve assembly has regulating valves to control the flow rate within its own channel. Based on the actual demand for inlet flow, the valves at each stage of the throttling pipe are adjusted to achieve graded throttling control of the main inlet flow. Furthermore, by simply setting throttling valve assemblies with different diameters according to the inlet flow throttling requirements, a single throttling valve assembly provides primary control capability for the main inlet flow. Depending on actual needs, two or more stages of throttling valve assemblies can be set to ensure graded and segmented control of the inlet flow.

[0019] Precise adjustment and strong stability: The electric gate valve at the inlet end of the throttling pipe controls the start and stop of the throttling pipe; the electric butterfly valve at the outlet end of the throttling pipe allows for free adjustment of the opening degree from 0 to 100 degrees, ensuring stepless and precise control of the throttling flow rate of a single branch pipe; at the same time, the coordinated operation of the electric valves can avoid overload of a single valve and extend the service life of the equipment.

[0020] Wide range of applications and strong adaptability: This utility model is applicable to various water transmission pipelines under full-pipe pressure flow conditions, especially suitable for gravity water intake systems of high-level reservoirs, which can effectively solve the overflow problem and ensure the balance between water plant production and demand; in addition, the number of throttling pipe stages can be expanded according to actual needs, further broadening the flow control range.

[0021] High degree of automation: Through remote or automatic control of electric valves, it can quickly respond to changes in downstream water demand, reduce manual intervention, and improve system operating efficiency and safety.

[0022] In summary, the water inlet pipe flow graded throttling control device provided by this utility model solves the problem of pipeline valves being unable to efficiently and accurately limit the water inlet flow. By setting up a graded throttling valve component system, different throttling adjustment methods are constructed to effectively regulate the pipeline flow rate. It is simple to assemble, has a wide range of applications, high stability, and strong functionality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a graded throttling and regulating device for water inlet pipe provided by this utility model.

[0024] In the diagram: 1. Dam; 2. Guardrail; 3. First air vent valve; 4. Main inlet pipe; 41. First main inlet pipe section; 42. Second main inlet pipe section; 43. Third main inlet pipe section; 44. Fourth main inlet pipe section; 45. Electric gate valve for main inlet pipe; 5. First throttling pipe; 6. First electric gate valve; 7. Second throttling pipe; 8. Second electric gate valve; 9. Support frame; 10. First electric butterfly valve; 11. Second air vent valve; 12. Second electric butterfly valve; 13. Manual drain valve. Detailed Implementation

[0025] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0026] In this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Please see Figure 1 As shown, this utility model provides a graded throttling control device for water inlet pipe flow, including a main water inlet pipe 4. The main water inlet pipe 4 includes a first main water inlet pipe section 41, a second main water inlet pipe section 42 connected to the first main water inlet pipe section 41, a third main water inlet pipe section 43 connected to the second main water inlet pipe section 42, and a fourth main water inlet pipe section 44 connected to the first main water inlet pipe section 41. The fourth main water inlet pipe section 44 is disposed on a dam 1. The first main water inlet pipe section 41 is inclinedly disposed on the inclined surface of the dam 1. The second main water inlet pipe section 42 is disposed above the bottom of the dam 1. The fourth main water inlet pipe section 44 is disposed inside the bottom of the dam 1, and its outlet extends outside the dam 1. The bottom of the first main water inlet pipe section 41 and the bottom of the second main water inlet pipe section 42 are connected by a first throttling pipe 5, and the lower part of the first main water inlet pipe section 41 and the upper part of the second main water inlet pipe section 42 are connected by a second throttling pipe 7.

[0029] In some embodiments, a first electric gate valve 6 is provided near the first inlet main pipe section 41 of the first throttling pipe 5, and a second electric butterfly valve 12 is provided near the second inlet main pipe section 42 of the first throttling pipe 5.

[0030] In some embodiments, a manual drain valve 13 is provided at the bottom of the first throttling pipe 5.

[0031] In some embodiments, a second electric gate valve 8 is provided near the first main water inlet section 41 of the second throttling pipe 7, and a first electric butterfly valve 10 is provided near the second main water inlet section 42 of the second throttling pipe 7.

[0032] In some embodiments, the second throttling pipe 7 is mounted on the second inlet main pipe section 42 via a support frame 9.

[0033] In some embodiments, the first water inlet main section 41 is provided with a guardrail 2 and a first air vent valve 3.

[0034] In some embodiments, a second vent valve 11 is provided on the second water inlet main section 42.

[0035] In some embodiments, the inner diameter of the second throttling pipe 7 is larger than the inner diameter of the first throttling pipe 5, and the inner diameter of the second throttling pipe 7 is smaller than the inner diameter of the main water inlet pipe 4.

[0036] In some embodiments, the main water inlet pipe 4 is provided with an electric gate valve 45, which is located in the second main water inlet pipe section 42 near the first main water inlet pipe section 41.

[0037] The inlet pipe flow rate throttling and regulation device provided by this utility model consists of two throttling pipes with different diameters installed on the full-tank pressure flow inlet main pipe 4. The inner diameter of the second throttling pipe 7 is larger than that of the first throttling pipe 5. An electric gate valve is installed at the inlet end of the throttling pipe (the starting point where the throttling pipe connects to the inlet main pipe), and an electric butterfly valve is installed at the outlet end of the throttling pipe (the ending point where the throttling pipe connects to the inlet main pipe). The electric gate valve controls the opening and closing of the throttling pipe valve group, and the electric butterfly valve at the outlet end adjusts the opening size, thereby realizing the throttling and regulation function of the throttling pipe valve group.

[0038] In actual operation, when the electric gate valves of both throttling pipes are closed and the main inlet gate valve is open, the inlet flow is unrestricted, which is the maximum inlet flow condition; when the second electric gate valve of the second throttling pipe is open, the electric butterfly valve adjusts the opening degree, and the electric gate valves of the main inlet and the front end of the first throttling pipe are closed simultaneously, this is the first-level throttling regulation condition for the inlet flow; when the electric gate valve of the first throttling pipe is open, the electric butterfly valve adjusts the opening degree, and the main inlet gate valve and the front end of the second throttling pipe are closed simultaneously, this is the second-level throttling regulation condition for the inlet flow; when both electric gate valves of both throttling pipes are open, the electric butterfly valves adjust their opening degree independently, and the main inlet gate valve is closed, this is the third-level throttling regulation condition for the inlet flow.

[0039] This invention utilizes a tiered throttling valve assembly system to construct different throttling adjustment methods, effectively limiting the flow rate in the inlet pipe. The system is simple to assemble, widely applicable, highly stable, and highly functional. While only two throttling pipes of different diameters are described here, in practice, two or more throttling pipes of different diameters can be used to achieve a wider flow rate limiting range and more precise adjustment, depending on actual needs.

[0040] The specific working principle of this utility model is as follows:

[0041] a. Water is delivered to the downstream system at full-pipe pressure through the main inlet pipe. The downstream system operates under non-constant flow demand conditions. The inlet flow rate is higher than the downstream system's demand flow rate. The flow is controlled and limited by the series valves on the main inlet pipe. However, the adjustment range is small and the adjustment accuracy is low, which cannot match the actual water demand of the downstream system. There is a safety hazard of overflow in the downstream system.

[0042] b. The inlet pipe flow rate classification and throttling control device is set at appropriate positions before and after the valve on the main inlet pipe.

[0043] c. Select appropriate positions before and after the main inlet valve, and connect the throttling pipe to the main inlet pipe. Install an electric gate valve at the inlet end of the throttling pipe (the beginning of the connection between the throttling pipe and the main inlet pipe), and install an electric butterfly valve at the outlet end of the throttling pipe (the end of the connection between the throttling pipe and the main inlet pipe). The single-stage throttling pipe system includes the throttling pipe, the electric gate valve of the throttling pipe, the electric butterfly valve of the throttling pipe, the main inlet pipe and the electric gate valve of the main inlet pipe, forming a closed loop connection.

[0044] d. The electric gate valve at the inlet of the throttling pipe functions to open and close the throttling pipe, while the electric butterfly valve at the outlet of the throttling pipe allows for precise throttling by adjusting the opening size.

[0045] e. Control methods: In actual operation, when the electric gate valves of both throttling pipes are closed and the main inlet gate valve is open, the inlet flow is unrestricted, which is the maximum inlet flow condition; when the second electric gate valve of the second throttling pipe is open, the electric butterfly valve adjusts the opening degree, and the electric gate valves of the main inlet and the front end of the first throttling pipe are closed simultaneously, this is the first-level throttling regulation condition for the inlet flow; when the electric gate valve of the first throttling pipe is open, the electric butterfly valve adjusts the opening degree, and the main inlet gate valve and the front end of the second throttling pipe are closed simultaneously, this is the second-level throttling regulation condition for the inlet flow; when both electric gate valves of the throttling pipes are open, the electric butterfly valves adjust the opening degree independently, and the main inlet gate valve is closed, this is the third-level throttling regulation condition for the inlet flow.

[0046] f. Based on the control method in step f, two or more throttling pipes can be set according to the actual throttling needs. The diameter of the throttling pipe is smaller than that of the main inlet pipe. According to the different degrees of pipe diameter reduction, the throttling control is divided into multiple levels from small to large. One throttling pipe and its auxiliary valves are counted as one level. The more levels there are, the wider the throttling range and the stronger the throttling accuracy adjustment capability.

[0047] In summary, the inlet pipe flow rate throttling and control device provided by this utility model can effectively solve the problem of precise flow rate throttling in the inlet pipe by making appropriate modifications to the existing inlet pipe. It has a unique advantage for water plants with full-flow pressure flow water intake from high-level gravity water supply pipes. It can accurately throttle the flow rate of the main inlet pipe with a wide threshold, ensuring the balance between production and demand of the water plant. It is also highly adaptable to other situations where there is a need for throttling and control of other related pressure inlet pipes.

[0048] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0049] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.

[0050] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of these embodiments are merely for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A water inlet pipe flow grading throttling regulation device, characterized in that, The water inlet main pipe comprises a first water inlet main pipe section, a second water inlet main pipe section in communication with the first water inlet main pipe section, a third water inlet main pipe section in communication with the second water inlet main pipe section, and a fourth water inlet main pipe section in communication with the first water inlet main pipe section, the fourth water inlet main pipe section being arranged on the dam, the first water inlet main pipe section being arranged on the slope of the dam, the second water inlet main pipe section being arranged above the bottom of the dam, and the fourth water inlet main pipe section being arranged inside the bottom of the dam with its outlet extending out of the dam; the bottom of the first water inlet main pipe section and the bottom of the second water inlet main pipe section are in communication through a first throttling pipe, and the lower part of the first water inlet main pipe section and the upper part of the second water inlet main pipe section are in communication through a second throttling pipe.

2. The flow fractionating regulation device of the inlet pipe according to claim 1, characterized in that, The first throttling pipe is provided with a first electric gate valve near the first water inlet main pipe section, and a second electric butterfly valve near the second water inlet main pipe section.

3. The flow fractionating regulation device of the inlet pipe according to claim 2, characterized in that, The bottom of the first throttling pipe is provided with a manual drain valve.

4. The flow fractionating regulation device of a water inlet pipe according to claim 3, characterized in that, The second throttling pipe is provided with a second electric gate valve near the first water inlet main pipe section, and a first electric butterfly valve near the second water inlet main pipe section.

5. The flow fractionating regulation device of claim 4, wherein, The second throttling pipe is arranged on the second water inlet main pipe section through a support frame.

6. The flow fractionating regulation device of a water inlet pipe according to claim 5, characterized in that, The first water inlet main pipe section is provided with a guardrail and a first exhaust valve.

7. The flow fractionating regulation device of a water inlet pipe according to claim 6, characterized in that, The second water inlet main pipe section is provided with a second exhaust valve.

8. The flow fractionating regulation device of a water inlet pipe according to claim 7, characterized in that, The inner diameter of the second throttling pipe is larger than that of the first throttling pipe.

9. The flow fractionating regulation device of claim 8, wherein, The inner diameter of the second throttling pipe is smaller than that of the water inlet main pipe.

10. The flow fractionating regulation device of any one of claims 1-9, wherein, The water inlet main pipe is provided with a water inlet main pipe electric gate valve near the first water inlet main pipe section.

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