A steam pipe network water hammer monitoring and warning device

Abstract

The utility model discloses a kind of steam pipe network water hammer monitoring and warning device, including pipeline main body, the pipeline main body is provided with elbow main body, buffer plate is provided in the elbow main body, the back of the buffer plate is fixedly connected with connecting seat, the sidewall of the connecting seat is fixedly connected with rotating device, the lower end of the connecting seat is provided with positioning device, the outside of the elbow main body is provided with monitoring equipment main body, the sidewall of the monitoring equipment main body is provided with display screen main body, the sidewall of the elbow main body is connected by the fixed device of monitoring equipment main body, displacement sensor main body is provided in the buffer plate, the monitoring equipment main body is connected by detection line with displacement sensor main body.The utility model has can reduce the water hammer pressure at elbow, the benefit of facilitating monitoring water hammer pressure change.

Description

Technical Field

[0001] This utility model relates to the technical field of water hammer phenomenon in steam pipelines, specifically a water hammer monitoring and warning device for steam pipelines. Background Technology

[0002] Water hammer, also known as the water hammer effect, is a transient pressure surge phenomenon in steam pipelines caused by sudden changes in the flow velocity or pressure of the medium. In pressurized pipeline systems, a change in the operating state of a certain pipeline component causes a rapid change in the liquid flow velocity, resulting in a significant fluctuation in the liquid pressure within the pipe. It is a type of non-steady flow problem in pressurized pipelines and can lead to strong vibrations, noise, and cavitation in the pipeline system, and even severe deformation or rupture of the pipeline. Steam continuously dissipates heat as it flows through the pipeline, forming condensate. If this condensate is not drained in time through the drainage system, it will accumulate in low-lying areas or at the ends of the pipeline. When high-speed steam carries the condensate along with it, a two-phase flow of steam and water is formed. Once it encounters obstacles such as valves or elbows, or when a change in pipeline slope causes a sudden change in water flow velocity, the steam will rapidly condense into water, drastically reducing its volume and creating a local vacuum. The impact of the steam-water mixture will generate pressure waves within the pipeline. These pressure waves propagate through the fluid at the speed of sound and are reflected at various ends of the pipeline and at obstacles. The pressure waves reflected multiple times superimposed each other, further enhancing the impact force and causing repeated impacts and vibrations to the pipeline system.

[0003] In existing technologies, steam pipe networks have a large number of pipe bends. Over long periods of use, these bends are prone to damage and cracking due to water hammer inside the pipes. To mitigate this water hammer phenomenon and monitor the intensity of water hammer at weak points, we propose a steam pipe network water hammer monitoring and warning device. Utility Model Content

[0004] The purpose of this utility model is to provide a steam pipeline water hammer monitoring and warning device to solve the problems existing in the prior art mentioned in the background.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: A steam pipeline water hammer monitoring and warning device includes a pipeline body, a bend body located within the pipeline body, a buffer plate inside the bend body, a connecting seat fixedly connected to the back side of the buffer plate, a rotating device fixedly connected to the side wall of the connecting seat, a positioning device penetrating through the lower end of the connecting seat, a monitoring device body located on the outer side of the bend body, a display screen body located on the side wall of the monitoring device body, the monitoring device body being connected to the side wall of the bend body via a fixing device, a displacement sensor body located within the buffer plate, and the monitoring device body being connected to the displacement sensor body via a detection line.

[0006] Preferably, a buffer groove is provided through the upper end of the buffer plate, and the buffer groove is an arc-shaped groove.

[0007] Preferably, the rotating device includes a rotating groove that passes through the side wall of the connecting seat, a rotating shaft is provided in the rotating groove, and a through groove is provided through the side wall of the bent pipe body at the corresponding position. Both ends of the rotating shaft are connected to the through groove, and a sealing plug is threaded to the opening of each of the two through grooves.

[0008] Preferably, the positioning device includes a connecting groove that passes through the lower end of the connecting seat, a connecting bolt that is threaded through the lower end of the bent pipe body at the corresponding position, a connecting column that is fixedly connected to the tail end of the connecting bolt, the tail end of the connecting column that is slidably connected in the connecting groove, and a spring that is sleeved on the side wall of the connecting column.

[0009] Preferably, the fixing device includes a fixing seat fixedly connected to the back side of the main body of the monitoring equipment, a fixing ring fixedly connected to the side wall of the fixing seat, the fixing ring being sleeved on the side wall of the bent pipe body, a threaded seat fixedly connected to the side wall of the fixing ring, and a fixing screw threaded through the threaded seat.

[0010] Preferably, a sealing gasket is fixedly connected to the side wall of the sealing plug, and the sealing gasket is pressed tightly against the inner wall of the through groove.

[0011] Preferably, the connecting bolt and the bent pipe body are in a sealed connection.

[0012] Preferably, a wire hole is provided through the side wall of the bent tube body at the corresponding position, and a sealing post is sleeved on the side wall of the detection line, the position of the sealing post corresponding to the position of the wire hole.

[0013] Preferably, the openings of both through grooves within the bent pipe body are designed as vertical grooves, and the rotating shaft can slide at the vertical grooves at both ends.

[0014] Preferably, the detection line is coated with an anti-corrosion coating.

[0015] Compared with the prior art, the beneficial effects of this utility model are: In this invention, a buffer plate for buffering water hammer pressure is designed at the main body of the bend by setting a rotating device, a positioning device and a fixing device in cooperation. A hidden displacement sensor is designed at the buffer plate, which can be used to display the real-time pressure of the buffer plate through the monitoring device on one side. This allows the operator to monitor the water hammer pressure at this point at any time and take appropriate measures. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a steam pipeline water hammer monitoring and warning device proposed in this utility model; Figure 2 This is a schematic diagram of the specific structure of the buffer plate of the steam pipeline water hammer monitoring and warning device proposed in this utility model; Figure 3 This is a side view of the main body of the monitoring instrument for a steam pipeline water hammer monitoring and warning device proposed in this utility model; Figure 4 This is a schematic diagram of the sealing plug structure of a steam pipeline water hammer monitoring and warning device proposed in this utility model.

[0017] In the diagram: 1. Pipe body, 2. Bend body, 3. Sealing plug, 4. Connecting bolt, 5. Fixing ring, 6. Monitoring equipment body, 7. Display screen body, 8. Buffer plate, 9. Connecting seat, 10. Rotating shaft, 11. Detection line, 12. Spring, 13. Connecting column, 14. Fixing screw, 15. Fixing seat, 16. Sealing gasket, 17. Sealing column. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figure 1-4A steam pipeline water hammer monitoring and warning device includes a pipeline body 1, a bend body 2 at the pipeline body 1, a buffer plate 8 inside the bend body 2, and a buffer groove penetrating the upper end of the buffer plate 8. The design depth and width of the buffer groove are precisely calculated to achieve the best buffering effect. The buffer groove is an arc-shaped groove, and the curvature of the arc-shaped groove is consistent with the steam flow direction, allowing the steam to pass smoothly. A connecting seat 9 is fixedly connected to the back side of the buffer plate 8. The connecting seat 9 is made by integral casting process to ensure the stability and reliability of the structure. A rotating device is fixedly connected to the side wall of the connecting seat 9. The rotating device allows the buffer plate 8 to rotate freely within a certain angle to adapt to different working conditions. The rotating device includes a rotating groove penetrating the side wall of the connecting seat 9, and a rotating shaft 10 is set in the rotating groove. The rotating shaft 10 is a torsion spring rotating shaft, which can facilitate the reset of the buffer plate 8. A through groove is penetrating the side wall of the bend body 2 at the corresponding position. Both ends of the rotating shaft 10 are connected to the through groove. This connection method facilitates disassembly and maintenance while providing good sealing performance. Both through slots are threaded with sealing plugs 3, which are made of high-temperature resistant fluororubber material to ensure that they will not age or fail during long-term use.

[0020] A positioning device is installed at the lower end of the connecting seat 9, which can precisely control the initial position and working range of the buffer plate. The positioning device includes a connecting groove that runs through the lower end of the connecting seat 9, and a guide structure is provided in the connecting groove to ensure smooth and jam-free movement. A connecting bolt 4 is threaded through the lower end of the bend body 2 at the corresponding position. The connecting bolt 4 is an 8.8 grade high-strength bolt that meets strict sealing requirements. The connecting bolt 4 and the bend body 2 are sealed together, and the sealing surface adopts a double sealing structure of metal gasket and graphite spiral wound gasket. A connecting post 13 is fixedly connected to the tail end of the connecting bolt 4. The connecting post 13 and the connecting bolt 4 are integrally formed to ensure connection strength. The tail end of the connecting post 13 is slidably connected in the connecting groove, and the sliding fit clearance is controlled between 0.05-0.1mm to ensure both flexibility and precision. A spring 12 is sleeved on the side wall of the connecting post 13. The spring 12 is made of high-temperature alloy material and can operate at temperatures above 500℃. Both through slots within the bend body 2 are designed as vertical slots. The orientation of these vertical slots allows the buffer plate to optimally adapt to changes in the steam flow direction. The rotating shaft 10 can slide at the vertical slots at both ends, and the sliding stroke has been rigorously calculated to ensure maximum buffering effect.

[0021] Specifically, a monitoring device body 6 is installed on the outer side of the bend body 2. The monitoring device body 6 has an IP67 protection rating, making it suitable for harsh industrial environments. A display screen body 7 is installed on the side wall of the monitoring device body 6. The display screen uses high-brightness LED backlighting, ensuring clear visibility even in sunlight. The monitoring device body 6 is connected to the side wall of the bend body 2 via a fixing device. The fixing device features a quick-release design for easy equipment inspection and maintenance. The fixing device includes a fixing seat 15 fixedly connected to the back side of the monitoring device body 6. The fixing seat 15 is made of aluminum alloy, combining lightweight and high strength. A fixing ring 5 is fixedly connected to the side wall of the fixing seat 15. The inner side of the fixing ring 5 has anti-slip textures to prevent displacement during use. The fixing ring 5 is fitted onto the side wall of the bend body 2, and its installation position is optimized so as not to affect the normal operation of other pipeline functions. A threaded seat is fixedly connected to the side wall of the fixing ring 5. The threaded seat features an embedded design, resulting in an aesthetically pleasing and non-protruding appearance. A fixing screw 14 is connected through the threaded seat. The fixing screw 14 is a stainless steel internal hexagon screw with excellent anti-loosening performance.

[0022] Specifically, a displacement sensor body is installed inside the buffer plate 8. The displacement sensor uses the magnetostrictive principle and has a measurement accuracy of ±0.1mm. The monitoring device body 6 is connected to the displacement sensor body via a detection line 11. The detection line 11 adopts a double-layer shielding design to ensure that the signal transmission is not interfered with. A wire hole is provided through the side wall of the bend body 2 at the corresponding position. The edge of the wire hole is designed with a chamfer to prevent the detection line from wearing out during long-term use. A sealing post 17 is sleeved on the side wall of the detection line 11. The sealing post 17 is made of high-temperature resistant silicone rubber material to ensure long-term effective sealing. The position of the sealing post 17 corresponds to the position of the wire hole. This design allows the detection line to enter and exit smoothly without affecting the sealing effect. The detection line 11 is wrapped with an anti-corrosion coating. The anti-corrosion coating is made of polytetrafluoroethylene material and has a service life of more than 10 years.

[0023] It is worth mentioning that a sealing gasket 16 is fixedly connected to the side wall of the sealing plug 3. The sealing gasket 16 is 5mm thick and can generate sufficient sealing pressure when compressed. The sealing gasket 16 is pressed tightly against the inner wall of the through groove, and the sealing gasket under pressure can achieve the sealing performance required by ASME B16.20 standard.

[0024] In this utility model, the operator can insert the rotating shaft 10 into the inside of the bent pipe body 2 through the through groove, so that the rotating shaft 10 is connected to the connecting seat 9, and the sealing plug 3 and the sealing gasket 16 are used to make a seal. Then, the detection line 11 can be used to connect the monitoring equipment body 6 and the sensor set in the buffer plate 8 to facilitate real-time monitoring of the actual movement trajectory and pressure of the buffer plate 8.

[0025] When the buffer plate 8 is subjected to water hammer pressure, it can slide downward and tilt itself to relieve the force, which can protect the curved wall of the pipe body 2. The two ends of the corresponding rotating shaft 10 slide in the vertical grooves set at the two through slots, which plays a positioning and guiding role. The corresponding spring 12 and the rotating shaft 10 with its own torsion spring can reset the buffer plate 8, making it easier to withstand the next water hammer.

[0026] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A steam pipeline water hammer monitoring and warning device, comprising a pipeline body (1), characterized in that, A bend body (2) is provided at the main body of the pipe (1). A buffer plate (8) is provided inside the bend body (2). A connecting seat (9) is fixedly connected to the back side of the buffer plate (8). A rotating device is fixedly connected to the side wall of the connecting seat (9). A positioning device is provided through the lower end of the connecting seat (9). A monitoring device body (6) is provided on the outside of the bend body (2). A display screen body (7) is provided on the side wall of the monitoring device body (6). The monitoring device body (6) is connected to the side wall of the bend body (2) through a fixing device. A displacement sensor body is provided inside the buffer plate (8). The monitoring device body (6) is connected to the displacement sensor body through a detection line (11).

2. The steam pipeline water hammer monitoring and warning device according to claim 1, characterized in that, A buffer groove is provided through the upper end of the buffer plate (8), and the buffer groove is an arc-shaped groove.

3. The steam pipeline water hammer monitoring and warning device according to claim 1, characterized in that, The rotating device includes a rotating groove that runs through the side wall of the connecting seat (9), a rotating shaft (10) is provided in the rotating groove, and a through groove is provided through the side wall of the bent pipe body (2) at the corresponding position. Both ends of the rotating shaft (10) are connected to the through groove, and a sealing plug (3) is threaded to the opening of the two through grooves.

4. The steam pipeline water hammer monitoring and warning device according to claim 3, characterized in that, A sealing gasket (16) is fixedly connected to the side wall of the sealing plug (3), and the sealing gasket (16) is pressed tightly against the inner wall of the through groove.

5. A steam pipeline water hammer monitoring and warning device according to claim 3, characterized in that, Both through slots in the bent pipe body (2) are designed as vertical slots, and the rotating shaft (10) can slide at the vertical slots at both ends.

6. The steam pipeline water hammer monitoring and warning device according to claim 1, characterized in that, The positioning device includes a connecting groove that runs through the lower end of the connecting seat (9), and a connecting bolt (4) that runs through the lower end of the bent pipe body (2) at the corresponding position. A connecting column (13) is fixedly connected to the tail end of the connecting bolt (4), and the tail end of the connecting column (13) is slidably connected in the connecting groove. A spring (12) is sleeved on the side wall of the connecting column (13).

7. A steam pipeline water hammer monitoring and warning device according to claim 6, characterized in that, The connecting bolt (4) and the bent pipe body (2) are sealed together.

8. A steam pipeline water hammer monitoring and warning device according to claim 1, characterized in that, The fixing device includes a fixing seat (15) fixedly connected to the back side of the main body (6) of the monitoring equipment. A fixing ring (5) is fixedly connected to the side wall of the fixing seat (15). The fixing ring (5) is sleeved on the side wall of the bent pipe body (2). A threaded seat is fixedly connected to the side wall of the fixing ring (5). A fixing screw (14) is threaded through the threaded seat.

9. A steam pipeline water hammer monitoring and warning device according to claim 1, characterized in that, A wire hole is provided through the side wall of the bent pipe body (2) at the corresponding position, and a sealing post (17) is sleeved on the side wall of the detection line (11). The position of the sealing post (17) corresponds to the position of the wire hole.

10. A steam pipeline water hammer monitoring and warning device according to claim 1, characterized in that, The detection line (11) is wrapped with anti-corrosion coating.

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