A drain condensate device for a boiler heater in a thermal power plant

Abstract

This utility model relates to the field of drainage technology, specifically a drainage device for a boiler heater in a thermal power plant. It includes a valve body with an inlet on its inner side and an outlet at the end of the valve body furthest from the inlet. A connecting pipe is fixedly connected to the surface of the valve body, and a filter cartridge is installed inside the connecting pipe. A valve cover is threadedly connected to the surface of the connecting pipe. This utility model, through the design of a sealing block and the movable rod, allows the sealing block to open the inlet when condensate enters, ensuring the inflow of condensate and achieving drainage. Simultaneously, the elasticity of the first spring allows the sealing block to reset and seal the inlet when no condensate enters, preventing backflow of condensate. This ensures effective drainage and stable operation of the heater, facilitating better use of the heater in a thermal power plant boiler.

Description

Technical Field

[0001] This utility model relates to the field of hydrophobic technology, specifically a hydrophobic device for a boiler heater in a thermal power plant. Background Technology

[0002] A combined heat and power (CHP) power plant is an energy enterprise with CHP as its core technology. It generates high-temperature, high-pressure steam by burning fossil fuels (such as coal and natural gas) or biomass to drive a steam turbine for power generation, while simultaneously utilizing the waste heat of the steam for district heating. Boiler air heaters, as key equipment in the boiler system of a CHP power plant, primarily serve the dual functions of winter freeze protection and equipment protection. When steam heats the air inside the air heater, it releases heat and condenses into water. This condensate must be drained promptly; otherwise, it will affect heat exchange efficiency and may even cause equipment damage. Therefore, condensate traps are used. Condensate traps are devices used to automatically remove condensate (water droplets) from the steam system while preventing steam leakage. Common types include float-type condensate traps, thermostatic condensate traps, and thermodynamic condensate traps. The use of condensate traps ensures timely drainage of condensate, preventing water accumulation inside the air heater, ensuring sufficient contact between the heat exchange surface and steam, maintaining efficient heat transfer, preventing water hammer, and reducing steam leakage.

[0003] In the prior art, when condensate is drained through a condensate draining device, the condensate cannot be guided well, which makes it easy for the condensate to flow back after entering the device. This will affect the stable operation of the device and is not conducive to the use of the air heater. Therefore, in order to solve the above problems, a condensate draining device for the air heater of a thermal power plant boiler is proposed. Summary of the Invention

[0004] The purpose of this utility model is to provide a drain device for a boiler heater in a thermal power plant, in order to solve the problem mentioned in the background art that the condensate cannot be guided well, which makes it easy for the condensate to flow back after entering the device, thus affecting the stable operation of the device and hindering the use of the heater.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a drain device for a boiler heater in a thermal power plant, comprising a valve body, an inlet provided on the inner side of the valve body, and an outlet provided at the end of the valve body away from the inlet, a connecting pipe fixedly connected to the surface of the valve body, a filter cylinder provided on the inner side of the connecting pipe, and a valve cover threadedly connected to the surface of the connecting pipe. An anti-backflow mechanism is provided on the inner side of the water inlet, and a replacement mechanism is provided on the inner side of the connecting pipe. The backflow prevention mechanism includes a sealing block, which is movably disposed inside the water inlet; The replacement mechanism includes a clamping block, which is movably disposed inside the connecting pipe.

[0006] Preferably, the anti-backflow mechanism further includes a fixing block, which is fixedly connected to the inner wall of the water inlet. A fixing rod is fixedly connected to the surface of the fixing block, and a movable rod is movably connected to the surface of the fixing rod.

[0007] Preferably, the fixed rods are in four groups and fixedly connected to the fixed blocks, and the movable rods are in four groups and correspondingly connected to the fixed rods, with sealing blocks fixedly connected to the surface of the movable rods.

[0008] Preferably, the movable rod has a first movable groove on its inner side, and the fixed rod moves within the first movable groove. A first spring is fixedly connected to the inner wall of the first movable groove. One end of the first spring is fixedly connected to the fixed rod, and the other end of the first spring is fixedly connected to the first movable groove.

[0009] Preferably, the replacement mechanism further includes a second movable groove, which is formed inside the connecting pipe, and a second spring is fixedly connected to the inner wall of the second movable groove. A connecting rod is fixedly connected to the end of the second spring away from the second movable groove.

[0010] Preferably, the second movable groove is provided in six groups, and the second spring and the connecting rod are also provided in six groups. The end of the connecting rod away from the second spring is fixedly connected to a clamping block, and the connecting rod moves inside the second movable groove.

[0011] Preferably, a connecting block is fixedly connected to the surface of the connecting rod, a sliding groove is provided on the inner wall of the second movable groove, and the end of the connecting block away from the connecting rod moves within the sliding groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are: By using a sealing block in conjunction with the movable rod, when condensate enters the inlet, the sealing block is forced to open the inlet, allowing condensate to flow in and thus achieving drainage. Simultaneously, the elasticity of the first spring allows the sealing block to reset and seal the inlet when no condensate enters, preventing backflow. This ensures effective drainage and stable operation of the heater, facilitating better use of the heater in power plant boilers.

[0013] By adjusting the connecting rod and utilizing the elasticity of the second spring, the clamping block can move inside the connecting tube and contact or detach from the surface of the filter cartridge. This allows for the fixing and removal of the filter cartridge, facilitating its replacement and ensuring effective filtration of condensate, thus guaranteeing the quality of the water-repellent filter. Attached Figure Description

[0014] Figure 1This is a front view schematic diagram of the structure of this utility model; Figure 2 This is a front sectional view of the structure of this utility model; Figure 3 This is an exploded cross-sectional view of the structure of this utility model. Figure 4 This is an exploded cross-sectional view of the structure of the fixing block and sealing block of this utility model. Figure 5 This is a front sectional view of the structure of the connecting pipe and clamping block of this utility model; Figure 6 This utility model Figure 5 A magnified structural diagram of point A in the middle.

[0015] In the diagram: 1. Valve body; 11. Inlet; 12. Outlet; 13. Connecting pipe; 14. Filter cartridge; 15. Valve cover; 2. Fixing block; 21. Fixing rod; 22. Movable rod; 23. Sealing block; 24. First movable groove; 25. First spring; 3. Second movable groove; 31. Second spring; 32. Connecting rod; 33. Clamping block; 34. Connecting block; 35. Slide groove. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figure 1-6 One embodiment provided by this utility model: A drain device for a boiler heater in a thermal power plant includes a valve body 1, an inlet 11 on the inner side of the valve body 1, and an outlet 12 at the end of the valve body 1 away from the inlet 11. A connecting pipe 13 is fixedly connected to the surface of the valve body 1, and a filter cartridge 14 is provided on the inner side of the connecting pipe 13. A valve cover 15 is threadedly connected to the surface of the connecting pipe 13. An anti-backflow mechanism is provided on the inner side of the inlet 11, and a replacement mechanism is provided on the inner side of the connecting pipe 13. The anti-backflow mechanism includes a sealing block 23, which is movably disposed on the inner side of the inlet 11. The replacement mechanism includes a clamping block 33, which is movably disposed on the inner side of the connecting pipe 13. The inlet 11 and outlet 12 allow condensate to enter and exit, and the filter cartridge 14 filters impurities in the condensate.

[0018] Furthermore, the anti-backflow mechanism also includes a fixing block 2, which is fixedly connected to the inner wall of the inlet 11. A fixing rod 21 is fixedly connected to the surface of the fixing block 2, and a movable rod 22 is movably connected to the surface of the fixing rod 21. By setting the sealing block 23, the sealing block 23 can be moved to block and unblock the inlet 11, thereby facilitating the entry of condensate and preventing condensate backflow and backflow, thus ensuring the stable operation of the thermal power plant boiler and the air heater.

[0019] Furthermore, the fixed rods 21 are fixedly connected to the fixed blocks 2 in four groups, and the movable rods 22 are correspondingly connected to the fixed rods 21 in four groups. The surface of the movable rods 22 is fixedly connected to the sealing blocks 23. Through the movable setting of the movable rods 22, when condensate enters, the sealing blocks 23 are subjected to force, which can make the movable rods 22 move on the surface of the fixed rods 21, so that condensate can flow in through the inlet 11, and the sealing blocks 23 can be avoided from blocking the entry of condensate.

[0020] Furthermore, a first movable groove 24 is provided on the inner side of the movable rod 22, and the fixed rod 21 moves within the first movable groove 24. A first spring 25 is fixedly connected to the inner wall of the first movable groove 24. One end of the first spring 25 is fixedly connected to the fixed rod 21, and the other end of the first spring 25 is fixedly connected to the first movable groove 24. By setting the first spring 25, the movable rod 22 can be reset, so that when no condensate enters, the sealing block 23 can be reset and engage with the inner wall of the inlet 11, thereby blocking the inlet 11 and preventing the backflow of condensate.

[0021] Furthermore, the replacement mechanism also includes a second movable groove 3, which is located inside the connecting pipe 13. A second spring 31 is fixedly connected to the inner wall of the second movable groove 3. A connecting rod 32 is fixedly connected to the end of the second spring 31 away from the second movable groove 3. By setting the second spring 31, the connecting rod 32 can be reset, thereby enabling the clamping block 33 to be reset and clamp the filter cartridge 14, which is convenient for fixing the filter cartridge 14. At the same time, the movement of the connecting rod 32 allows the clamping block 33 to disengage from the surface of the filter cartridge 14, which is also convenient for removing and replacing the filter cartridge 14, thus ensuring the filtration quality of the filter cartridge 14.

[0022] Furthermore, the second movable groove 3 is provided in six groups, and the second spring 31 and the connecting rod 32 are also provided in six groups. The end of the connecting rod 32 away from the second spring 31 is fixedly connected to the clamping block 33, and the connecting rod 32 moves inside the second movable groove 3. Through the movable arrangement of the connecting rod 32, the movement of the connecting rod 32, in conjunction with the elastic property of the second spring 31, can realize the movement and reset of the clamping block 33, thereby facilitating the clamping or unclamping of the filter cartridge 14 by the clamping block 33, thus facilitating the fixing and removal of the filter cartridge 14.

[0023] Furthermore, a connecting block 34 is fixedly connected to the surface of the connecting rod 32, and a sliding groove 35 is provided on the inner wall of the second movable groove 3. The end of the connecting block 34 away from the connecting rod 32 moves inside the sliding groove 35. By setting the connecting block 34 and opening the sliding groove 35, the connecting rod 32 can be limited, so that the connecting rod 32 can move stably inside the second movable groove 3, and the clamping block 33 can move stably, thereby achieving stable clamping of the condensate by the clamping block 33.

[0024] Working principle: When condensate enters through the inlet 11, the sealing block 23 is squeezed, causing the movable rod 22 to move on the surface of the fixed rod 21. Consequently, the fixed rod 21 moves inside the first movable groove 24, causing the first spring 25 to deform. At this time, the sealing block 23 moves accordingly, releasing the blockage of the inlet 11 and allowing condensate to enter. When no condensate enters, the first spring 25 returns to its original position under its rebound action, which in turn drives the movable rod 22 to return to its original position. Thus, the sealing block 23 returns to its original position and blocks the inlet 11, preventing condensate from flowing back. Rotate the valve cover 15 to remove it from the connecting pipe 13. Then pull the filter cartridge 14, causing the clamping block 33 to move under force, and the connecting rod 32 to move inside the second movable groove 3. At the same time, the connecting block 34 slides inside the sliding groove 35. At this time, the second spring 31 is in a contracted state, so the filter cartridge 14 can be pulled out from the inside of the connecting pipe 13 and replaced. When the filter cartridge 14 needs to be installed and used, place the filter cartridge 14 inside the connecting pipe 13 and move the clamping block 33 to move the clamping block 33 and contract the second spring 31. Then place the filter cartridge 14 in the middle position of the clamping block 33 and release the clamping block 33. The connecting rod 32 will reset under the rebound action of the second spring 31, and the clamping block 33 will reset and contact the surface of the filter cartridge 14, thereby clamping and fixing the filter cartridge 14.

[0025] The above are merely preferred embodiments of this utility model and are not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the description above. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A drain device for a boiler heater in a thermal power plant, comprising a valve body (1), wherein an inlet (11) is provided on the inner side of the valve body (1), and an outlet (12) is provided at the end of the valve body (1) away from the inlet (11), a connecting pipe (13) is fixedly connected to the surface of the valve body (1), and a filter cartridge (14) is provided on the inner side of the connecting pipe (13), and a valve cover (15) is threadedly connected to the surface of the connecting pipe (13). Its features are, The inlet (11) is provided with an anti-backflow mechanism, and the connecting pipe (13) is provided with a replacement mechanism. The anti-backflow mechanism includes a sealing block (23), which is movably disposed inside the inlet (11); The replacement mechanism includes a clamping block (33), which is movably disposed inside the connecting pipe (13).

2. The drain device for a boiler heater in a thermal power plant according to claim 1, characterized in that: The anti-backflow mechanism also includes a fixed block (2), which is fixedly connected to the inner wall of the inlet (11). A fixed rod (21) is fixedly connected to the surface of the fixed block (2), and a movable rod (22) is movably connected to the surface of the fixed rod (21).

3. A drain condensate device for a boiler heater in a thermal power plant according to claim 2, characterized in that: The fixed rods (21) are fixedly connected to the fixed blocks (2) in four groups, and the movable rods (22) are fixedly connected to the fixed rods (21) in four groups. The surface of the movable rods (22) is fixedly connected with sealing blocks (23).

4. A drain device for a boiler heater in a thermal power plant according to claim 3, characterized in that: The inner side of the movable rod (22) is provided with a first movable groove (24), and the fixed rod (21) moves inside the first movable groove (24). A first spring (25) is fixedly connected to the inner wall of the first movable groove (24). One end of the first spring (25) is fixedly connected to the fixed rod (21), and the other end of the first spring (25) is fixedly connected to the first movable groove (24).

5. A drain device for a boiler heater in a thermal power plant according to claim 1, characterized in that: The replacement mechanism also includes a second movable groove (3), which is located inside the connecting pipe (13), and a second spring (31) is fixedly connected to the inner wall of the second movable groove (3). A connecting rod (32) is fixedly connected to the end of the second spring (31) away from the second movable groove (3).

6. A drain device for a boiler heater in a thermal power plant according to claim 5, characterized in that: The second movable groove (3) is opened in six groups, and the second spring (31) and the connecting rod (32) are also arranged in six groups. The end of the connecting rod (32) away from the second spring (31) is fixedly connected to the clamping block (33), and the connecting rod (32) moves inside the second movable groove (3).

7. A drain device for a boiler heater in a thermal power plant according to claim 6, characterized in that: A connecting block (34) is fixedly connected to the surface of the connecting rod (32), and a sliding groove (35) is provided on the inner wall of the second movable groove (3), and the end of the connecting block (34) away from the connecting rod (32) moves in the inner side of the sliding groove (35).

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