Silencer for water supply pipeline of thermal power plant

Abstract

The utility model discloses a thermal power plant water supply pipeline silencer which comprises a water supply curved pipe, the bottom of the water supply curved pipe is connected with a flow slowing assembly in a penetrating mode, a connecting plate is fixedly connected to the middle of the inner side wall of the water supply curved pipe, and a pressure bearing assembly is installed on the upper side wall of the connecting plate. The lower side wall of the connecting plate is fixedly connected with a plurality of spring frames distributed in a circumferential array mode, the interior of each spring frame is connected with a spring plate through a spring, the outer side wall of each spring plate is fixedly connected with a flow limiting assembly, the flow limiting assembly comprises a top plate, and the lower side wall of the top plate is fixedly connected with a flow limiting plate; a plurality of through holes are formed in the flow limiting plate, and a wedge block is fixedly connected to the outer side wall of the top plate. Water flows to the inside through the cohesive flow limiting plates, the flow speed of the water flows is limited through the through holes formed in the wedge-shaped blocks, the situation that the water flows impact the bent pipe part due to the fact that the flow speed of the water flows is too high is avoided, and noise generated when the water flows impact the bent pipe is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of pipeline silencing, in particular to a silencer for a water supply pipeline in a thermal power plant. Background Art

[0002] The feedwater pipeline plays a crucial role in the operation of a thermal power plant. It is primarily responsible for delivering treated water to the boiler. Primarily, it provides a stable water source, ensuring sufficient water to maintain normal steam production during operation. Proper feedwater flow is crucial for maintaining a stable water level within the boiler, which is directly related to the boiler's safe operation and thermal efficiency.

[0003] However, when the water pressure suddenly rises, the water flow conditions in the water supply pipe will change dramatically, especially in the bend part, which will have serious adverse effects. Due to the change in the direction of the water flow at the bend, the high-speed water flow impacts the bend from top to bottom. This impact will cause the bend to withstand huge instantaneous pressure, far exceeding the pressure it withstands during normal operation. This may lead to local stress concentration in the bend and excessive strain on the pipe wall material of the bend. Over time, the structural integrity of the bend will be damaged, and cracks or even ruptures may occur. Once the bend ruptures, a large amount of water will leak, which will not only affect the normal water supply of the thermal power plant, but also lead to a series of problems such as water shortage in the boiler. Based on the above viewpoints, technical personnel in this field provide a thermal power plant water supply pipe muffler. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a silencer for the water supply pipe of a thermal power plant. The designed silencer for the water supply pipe of a thermal power plant allows water to flow into the interior through the engaged flow limiting plates, and limits the water flow rate through the through holes opened on the wedge-shaped blocks, thereby avoiding the water flow rate being too fast and causing it to impact the bent pipe part, and effectively reducing the noise generated by the water flow impacting the bent pipe.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A silencer for a water supply pipe in a thermal power plant comprises a water supply curved pipe, a slow-flow component being connected through the bottom of the water supply curved pipe, a connecting plate being fixedly connected to the middle position of the inner wall of the water supply curved pipe, a pressure-bearing component being installed on the upper side wall of the connecting plate, a plurality of spring frames distributed in a circular array being fixedly connected to the lower side wall of the connecting plate, a spring plate being connected to the interior of each spring frame via a spring, and a flow-limiting component being fixedly connected to the outer side wall of each spring plate.

[0007] Through the above technical solution, the device first unloads part of the water pressure flowing down from the top of the pipe through the pressure-bearing component. When the water flow pressure is too large, it will drive the pressure-bearing component to move downward, so that several flow-limiting components are hugged together, and work together with the slow-flow component to reduce the flow velocity of the water, avoiding its direct impact on the curved part of the water supply pipe, and at the same time reducing the noise of the water flow impacting the pipe.

[0008] Furthermore, the flow limiting assembly includes a top plate, a lower side wall of the top plate is fixedly connected to a flow limiting plate, a plurality of through holes are formed on the flow limiting plate, and an outer side wall of the top plate is fixedly connected to a wedge block;

[0009] Through the above technical solution, water flows into the interior through the interlocking flow limiting plates, and the water flow rate is limited by the through holes opened on the wedge blocks, thereby preventing the water flow from being too fast and causing it to impact the bent pipe part, and effectively reducing the noise generated by the water flow impacting the bent pipe.

[0010] Furthermore, guide rails are installed on the upper side wall of the connecting plate and on both sides of each current limiting component, and the current limiting plate is limited and slides in the guide rails on both sides;

[0011] With the above technical solution, the guide rail enables the flow limiting plate to slide stably inwards when the two plates are engaged.

[0012] Furthermore, the pressure-bearing assembly includes a pressure-bearing plate, a lower side wall of the pressure-bearing plate is fixedly connected to a plurality of pressure-bearing springs, the other ends of the plurality of pressure-bearing springs are fixedly connected to a connecting plate, the lower side wall of the pressure-bearing plate is fixedly connected to a plurality of connecting rods, the other ends of the plurality of connecting rods are fixedly connected to a wedge-shaped pressure plate, and the wedge-shaped pressure plate is used in conjunction with its adjacent wedge-shaped block;

[0013] Through the above technical solution, when the water flow rate in the water pipe is too fast, the water flow will press the pressure plate to reduce the height of the pressure plate. In the process of the pressure plate descending, it will drive the wedge pressure plate to move downward, and the descending wedge pressure plate will drive the wedge block to slide inward, thereby making several flow limiting components embrace in a circle.

[0014] Furthermore, the flow slowing assembly includes a flow slowing cylinder, a spring damper is installed in the middle of the flow slowing cylinder, a flow slowing plate is installed on the top of the spring damper, and the flow slowing plate is placed at the center of the plurality of flow limiting plates;

[0015] Through the above technical solution, after several flow-limiting components are engaged, the water flow will only directly impact the slow-flow plate, and the impact force of the water flow can be directly removed by the spring damper, which greatly reduces the vibration caused by the water flow impacting the water supply curved pipe, and at the same time reduces the noise generated by the pipeline vibration.

[0016] The utility model has the following beneficial effects:

[0017] 1. In the present invention, the water flows into the inner portion of the flow-limiting plate through the engaging flow-limiting plate, and the flow rate of the water is limited by the through-holes opened on the wedge-shaped block, so as to avoid the water flow from being too fast and causing it to impact the elbow part, and effectively reduce the noise generated by the water flow impacting the elbow.

[0018] 2. In the present invention, after several flow-limiting components are engaged, the water flow will only directly impact the slow-flow plate, and the spring damper can directly remove the impact force of the water flow, greatly reducing the vibration caused by the water flow impacting the water supply curved pipe, and at the same time reducing the noise generated by the pipeline vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is an overall diagram of a water supply pipe muffler for a thermal power plant proposed by the utility model;

[0020] Figure 2 This is a top view of a water supply pipe muffler for a thermal power plant proposed by the utility model;

[0021] Figure 3 for Figure 2 Isometric section view along AA;

[0022] Figure 4 This is a schematic diagram of a water supply pipe muffler for a thermal power plant proposed by the utility model, in which a water supply curved pipe and a connecting plate are hidden.

[0023] Legend:

[0024] 1. Water supply curved pipe; 2. Slow flow assembly; 3. Pressure bearing assembly; 4. Current limiting assembly; 5. Connecting plate; 6. Guide rail; 7. Spring frame; 8. Spring plate;

[0025] 21. Slow-down cylinder; 22. Spring damper; 23. Slow-down plate;

[0026] 31. Pressure plate; 32. Connecting rod; 33. Wedge-shaped pressure plate; 34. Pressure spring;

[0027] 41. Top plate; 42. Limiting plate; 43. Wedge block. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] Example: Refer to Figure 1-4The utility model provides an embodiment of a silencer for a water supply pipe in a thermal power plant, comprising a water supply curved pipe 1, a slow-flow component 2 is connected through the bottom of the water supply curved pipe 1, the slow-flow component 2 is fixed on the wall outside the pipe, a connecting plate 5 is fixedly connected to the middle position of the inner wall of the water supply curved pipe 1, a pressure-bearing component 3 is installed on the upper side wall of the connecting plate 5, and a plurality of spring frames 7 distributed in a circumferential array are fixedly connected to the lower side wall of the connecting plate 5, each spring frame 7 is connected to a spring plate 8 through a spring inside, and the outer side wall of each spring plate 8 is fixedly connected to a flow limiting component 4. The device first removes part of the water pressure flowing down from the top of the pipe through the pressure-bearing component 3. When the water pressure is too large, it will drive the pressure-bearing component 3 to move downward, so that the plurality of flow limiting components 4 are hugged together, and work together with the slow-flow component 2 to reduce the water flow rate, avoid it directly impacting the curved pipe part of the water supply curved pipe 1, and at the same time reduce the noise of the water impacting the pipe.

[0030] In an optional embodiment, the flow-limiting assembly 4 includes a top plate 41, the lower sidewall of which is fixedly connected to a flow-limiting plate 42 having a plurality of through-holes formed therein, and a wedge-shaped block 43 fixedly connected to the outer sidewall of the top plate 41. The interlocking wedge-shaped blocks 43 allow water to flow into the interior thereof, while the through-holes formed in the wedge-shaped blocks 43 limit the flow rate, thereby preventing the water from impacting the elbow due to excessive flow and effectively reducing the noise generated by the water impacting the elbow.

[0031] In an optional embodiment, guide rails 6 are installed on the upper side wall of the connecting plate 5 and on both sides of each flow limiting assembly 4, and the flow limiting plate 42 is limited and slides in the guide rails 6 on both sides. The guide rails 6 allow the flow limiting plate 42 to slide stably inward when embracing.

[0032] In an optional embodiment, the pressure-bearing assembly 3 includes a pressure plate 31, the lower sidewall of which is fixedly connected to a plurality of pressure springs 34, the other ends of which are fixedly connected to the connecting plate 5, the lower sidewall of which is fixedly connected to a plurality of connecting rods 32, the other ends of which are fixedly connected to a wedge-shaped pressure plate 33, which is used in conjunction with its adjacent wedge-shaped block 43. When the water flow rate in the water pipe is too fast, the water flow will press the pressure plate 31, causing the height of the pressure plate 31 to decrease. As the pressure plate 31 descends, it will drive the wedge-shaped pressure plate 33 downward, and the descending wedge-shaped pressure plate 33 will drive the wedge-shaped block 43 to slide inward, thereby causing the plurality of flow-limiting assemblies 4 to embrace and form a circular shape.

[0033] In an optional embodiment, the flow-slowing assembly 2 includes a flow-slowing cylinder 21, with a spring damper 22 mounted in the middle. A flow-slowing plate 23 is mounted on top of the spring damper 22, and the flow-slowing plate 23 is positioned at the center of a plurality of flow-limiting plates 42. When the flow-limiting assemblies 4 are joined, the water flow directly impacts the flow-slowing plate 23, while the spring damper 22 directly absorbs the impact of the water flow, significantly reducing the vibration caused by the water flow impacting the water supply curved pipe 1 and the noise generated by the pipe vibration.

[0034] Working principle: The device first unloads part of the water pressure flowing down from the top of the pipe through the pressure-bearing component 3. When the water flow rate in the water pipe is too fast, the water flow will press the pressure-bearing plate 31 to reduce the height of the pressure-bearing plate 31. In the process of the pressure-bearing plate 31 descending, it will drive the wedge-shaped pressure plate 33 to move downward, and the descending wedge-shaped pressure plate 33 will drive the wedge block 43 to slide inward, thereby making several flow-limiting components 4 embrace in a circular shape. The guide rail 6 allows the flow-limiting plate 42 to slide stably inward when embracing. The embraced flow-limiting plates 42 allow water to flow into the interior thereof, and the water flow rate is limited by the through holes opened on the wedge block 43, avoiding the water flow rate from being too fast and causing it to impact the bent pipe part, and effectively reducing the noise generated by the water flow impacting the bent pipe. After several flow-limiting components 4 are embraced, the water flow will only directly impact the slow-flow plate 23, and the spring damper 22 can directly unload the impact force of the water flow, greatly reducing the vibration caused by the water flow impacting the water supply curved pipe 1, and at the same time reducing the noise generated by the pipeline vibration.

[0035] Finally, it should be noted that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A silencer for a water supply pipe in a thermal power plant, comprising a water supply curved pipe (1), characterized in that: The bottom of the water supply curved pipe (1) is connected through a slow flow component (2), a connecting plate (5) is fixedly connected to the middle position of the inner wall of the water supply curved pipe (1), a pressure-bearing component (3) is installed on the upper side wall of the connecting plate (5), and a plurality of spring frames (7) distributed in a circumferential array are fixedly connected to the lower side wall of the connecting plate (5), the interior of each spring frame (7) is connected to a spring plate (8) via a spring, and the outer side wall of each spring plate (8) is fixedly connected to the flow limiting component (4).

2. A thermal power plant water supply pipe muffler according to claim 1, characterized in that: The flow limiting assembly (4) comprises a top plate (41), the lower side wall of the top plate (41) is fixedly connected to a flow limiting plate (42), a plurality of through holes are provided on the flow limiting plate (42), and the outer side wall of the top plate (41) is fixedly connected to a wedge block (43).

3. A thermal power plant water supply pipe muffler according to claim 2, characterized in that: Guide rails (6) are installed on the upper side wall of the connecting plate (5) and at both sides of each current limiting component (4), and the current limiting plate (42) is limitedly slidable in the guide rails (6) on both sides.

4. A thermal power plant water supply pipe muffler according to claim 2, characterized in that: The pressure-bearing assembly (3) includes a pressure-bearing plate (31), a lower side wall of the pressure-bearing plate (31) is fixedly connected to a plurality of pressure-bearing springs (34), the other ends of the plurality of pressure-bearing springs (34) are fixedly connected to a connecting plate (5), a lower side wall of the pressure-bearing plate (31) is fixedly connected to a plurality of connecting rods (32), the other ends of the plurality of connecting rods (32) are fixedly connected to a wedge-shaped pressure plate (33), and the wedge-shaped pressure plate (33) is used in conjunction with its adjacent wedge-shaped block (43).

5. A thermal power plant water supply pipe muffler according to claim 4, characterized in that: The slow flow assembly (2) comprises a slow flow cylinder (21), a spring damper (22) is installed in the middle of the slow flow cylinder (21), a slow flow plate (23) is installed on the top of the spring damper (22), and the slow flow plate (23) is placed at the center of a plurality of flow limiting plates (42).

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