Condensate water heat recovery system

Abstract

The utility model relates to the technical field of condensate water recovery, in particular to a condensate water heat recovery system which comprises a bottom supporting plate, a condensate water collecting tank, a steam-water heat exchanger and a water-water heat exchanger are arranged on the vertical side face of the bottom supporting plate, and a second connecting pipe is arranged on one side of the condensate water collecting tank in a communicating mode. The end, away from the condensate water collecting tank, of the second connecting pipe communicates with one side of a steam-water heat exchanger, the steam-water heat exchanger is located above the condensate water collecting tank, an arc-shaped clamping rod is clamped to the bottom of the outer circumferential face of the steam-water heat exchanger, and a fixing plate is fixedly arranged in the middle of one side of the arc-shaped clamping rod. Under the cooperation of the two trapezoidal sliding blocks, the connecting vertical plate at the top and other parts, the vertical plate is stressed to drive the switch plate to move in the water drainage valve box, the valve is opened through the temperature rise of internal liquid, heated water is discharged, the heated water can be fully utilized, and the water drainage effect is improved. And hot water waste is avoided.

Description

Technical Field

[0001] This application relates to the technical field of condensate recovery, and particularly to a condensate heat recovery system. Background Art

[0002] After steam releases its latent heat of vaporization in a steam-using device, it becomes condensate and is discharged through a steam trap. The condensate discharged from different steam-using devices is collected in a water collection tank through a recovery pipeline network and sent to a boiler or other heat-using places by a condensate recovery device. Since the pressure suddenly drops when the condensate enters the condensate collection tank and the water temperature is higher than the boiling point corresponding to this pressure, a large amount of secondary flash steam is generated. In traditional projects, due to flash heat dissipation or sometimes adding cold water to prevent cavitation of the transfer water pump, the recovered water temperature decreases, and at the same time, air enters the condensate recovery pipeline, which is likely to cause pipeline corrosion.

[0003] The secondary flash steam generated during the condensate recovery process poses a risk of pipeline corrosion, reducing the energy utilization efficiency of the entire system, and the recovery utilization rates of condensate and flash steam are very low, resulting in waste of resources. Utility Model Content

[0004] In order to recover and utilize the heat energy in condensate and flash steam through one device, by comprehensively utilizing the heat energy, the energy utilization efficiency can be improved. The recovered flash steam can be used to heat other fluids or as a low-grade heat source. Before the condensate enters the transfer water pump, the water temperature is increased through preheating to reduce the risk of cavitation, and the secondary flash steam generated during the condensate recovery process can be effectively reduced.

[0005] A condensate heat recovery system provided by this application adopts the following technical solution: It includes a bottom support plate. A condensate collection tank, a steam-water heat exchanger, and a water-water heat exchanger are arranged on the vertical side surface of the bottom support plate. A second connecting pipe is communicated on one side of the condensate collection tank. The end of the second connecting pipe away from the condensate collection tank is communicated with one side of the steam-water heat exchanger. The steam-water heat exchanger is located above the condensate collection tank. An arc-shaped clamping rod is clamped at the bottom of the outer circumferential surface of the steam-water heat exchanger. A fixing plate is fixedly arranged in the middle of one side of the arc-shaped clamping rod. The end of the fixing plate away from the arc-shaped clamping rod is fixedly arranged on the side surface of the bottom support plate.

[0006] A first connecting pipe is fixedly communicated at the middle position of the bottom of the condensate collection tank. The end of the first connecting pipe away from the condensate collection tank is communicated with the top of the water-water heat exchanger. The outer circumferential surface of the water-water heat exchanger is clamped with the inner wall of the arc-shaped clamping rod.

[0007] A drain valve box is fixedly arranged in the middle of the first connecting pipe. A switch plate is slidably arranged in the middle of the drain valve box. A second trapezoidal slider is fixedly arranged at the right end of the switch plate. A first trapezoidal slider is slidably arranged on the inclined surface of the second trapezoidal slider. A connecting vertical plate is fixedly arranged at the top of the first trapezoidal slider. A sliding rod is fixedly arranged inside the top of the connecting vertical plate. The bottom of the sliding rod is slidably inserted into the inner wall of the temperature measuring pipe. The bottom of the temperature measuring pipe is communicated with the bottom of one side of the condensate collection tank.

[0008] Optionally, second fixing rods are arranged on both sides of the condensate collection tank. The end of the second fixing rod far away from the condensate collection tank is fixedly arranged in the middle of the vertical side of the bottom support plate. The connection position between the condensate collection tank and the second connecting pipe is higher than the position of the third connecting pipe.

[0009] Optionally, the number of the arc-shaped clamping rods is two. Arc-shaped auxiliary rods are rotatably arranged at the left ends of the two arc-shaped clamping rods. A buckle is clamped at the position of the arc-shaped auxiliary rod far away from the left end of the arc-shaped clamping rod. The buckle is fixedly arranged in the middle of the right end of the arc-shaped clamping rod. The two arc-shaped clamping rods are respectively arranged at the bottoms of the steam-water heat exchanger and the water-water heat exchanger.

[0010] Optionally, the middle of the switch plate penetrates through the middle of the drain valve box. A backing plate is fixedly arranged at the left end of the switch plate. A reset spring is fixedly arranged on the side of the backing plate far away from the switch plate. The other end of the reset spring is fixedly arranged on the side of the bottom support plate. First fixing rods are arranged on both sides of the drain valve box. The other end of the first fixing rod is fixedly arranged on the side of the bottom support plate. A drain hole is fixedly arranged in the middle of the switch plate. The diameter of the drain hole in the middle of the switch plate is the same as the inner wall diameter of the first connecting pipe.

[0011] Optionally, a slide rail is fixedly arranged in the middle of the inclined surface of one side of the first trapezoidal slider. The width of the slide rail on the side of the first trapezoidal slider matches the width of the chute on the side of the second trapezoidal slider.

[0012] Optionally, a limiting frame is slidably sleeved in the middle of the connecting vertical plate. The end of the limiting frame far away from the connecting vertical plate is fixedly arranged on one side of the condensate collection tank.

[0013] Optionally, a third connecting pipe is communicated and arranged at the bottom of one side of the steam-water heat exchanger. The bottom of the third connecting pipe is communicated with the top of one side of the condensate collection tank. An external valve is fixedly arranged at the bottom of the right side of the water-water heat exchanger.

[0014] In summary, the present application includes the following beneficial technical effects:

[0015] 1. With the cooperation of components such as two trapezoidal sliders and the connecting vertical plate at the top, the utility model drives the switch plate to move inside the drain valve box through the force on the vertical plate, realizes the opening of the valve by the increase in the temperature of the internal liquid, and thus discharges the heated water, so that the heated water can be fully utilized and the waste of hot water can be avoided.

[0016] 2. The utility model recovers and utilizes the heat energy in condensate water and flash steam through a device. By comprehensively utilizing the heat energy, the energy utilization efficiency can be improved. The recovered flash steam can be used to heat other fluids or as a low-grade heat source. Before the condensate water enters the transfer water pump, the water temperature is increased through preheating to reduce the risk of cavitation. By preheating to increase the water temperature and reduce the risk of cavitation, the secondary flash steam generated during the condensate water recovery process can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is the overall three-dimensional structure schematic diagram in the embodiment of the present application;

[0018] Figure 2 is the three-dimensional sectional structure schematic diagram of the temperature measuring tube in the embodiment of the present application;

[0019] Figure 3 is the front structure schematic diagram in the embodiment of the present application;

[0020] Figure 4 is the left-side structure schematic diagram in the embodiment of the present application;

[0021] Figure 5 is the three-dimensional structure schematic diagram of the drain valve box in the embodiment of the present application.

[0022] Reference numerals: 1, bottom support plate; 2, fixing plate; 3, first connecting pipe; 4, drain valve box; 5, first fixing rod; 6, second fixing rod; 7, condensate water collection tank; 8, switch plate; 9, second connecting pipe; 10, arc-shaped auxiliary rod; 11, steam-water heat exchanger; 12, buckle; 13, sliding rod; 14, temperature measuring tube; 15, limiting frame; 16, connecting vertical plate; 17, first trapezoidal slider; 18, second trapezoidal slider; 19, water-water heat exchanger; 20, third connecting pipe; 21, arc-shaped clamping rod; 22, return spring; 23, backing plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] The following further describes the present application in detail Figures 1-5 with reference to the accompanying drawings.

[0024] The embodiment of the present application discloses a condensate water heat recovery system. As Figure 1As shown in the figure, it includes a bottom support plate 1. A condensate collection tank 7, a steam-water heat exchanger 11, and a water-water heat exchanger 19 are arranged on the vertical side of the bottom support plate 1. A second connecting pipe 9 is connected and arranged on one side of the condensate collection tank 7. One end of the second connecting pipe 9 away from the condensate collection tank 7 is connected and communicated with one side of the steam-water heat exchanger 11. The steam-water heat exchanger 11 is located above the condensate collection tank 7. An arc-shaped clamping rod 21 is clamped and arranged at the bottom of the outer circumferential surface of the steam-water heat exchanger 11. A fixing plate 2 is fixedly arranged in the middle of one side of the arc-shaped clamping rod 21. One end of the fixing plate 2 away from the arc-shaped clamping rod 21 is fixedly arranged on the side surface of the bottom support plate 1.

[0025] Please refer to Figure 1 , second fixing rods 6 are arranged on both sides of the condensate collection tank 7. By arranging the two second fixing rods 6 on both sides of the condensate collection tank 7, the fixing effect on the condensate collection tank 7 is realized. One end of the second fixing rod 6 away from the condensate collection tank 7 is fixedly arranged in the middle of the vertical side surface of the bottom support plate 1. The connection position of the condensate collection tank 7 and the second connecting pipe 9 is higher than the position of the third connecting pipe 20. By setting the second connecting pipe 9 at a higher position, since the gas is above the liquid, it is convenient for the generated hot gas to be discharged.

[0026] Please refer to Figure 1 , a first connecting pipe 3 is fixedly connected and arranged at the middle position of the bottom of the condensate collection tank 7. One end of the first connecting pipe 3 away from the condensate collection tank 7 is connected and communicated with the top of the water-water heat exchanger 19. The outer circumferential surface of the water-water heat exchanger 19 is clamped with the inner wall of the arc-shaped clamping rod 21.

[0027] Please refer to Figure 2 , a drain valve box 4 is fixedly arranged in the middle of the first connecting pipe 3. A switch plate 8 is slidably arranged in the middle of the drain valve box 4. A second trapezoidal slider 18 is fixedly arranged at the right end of the switch plate 8. A first trapezoidal slider 17 is slidably arranged on the inclined surface of the second trapezoidal slider 18. A slide rail is fixedly arranged in the middle of the inclined surface of one side of the first trapezoidal slider 17. The width of the slide rail on the side surface of the first trapezoidal slider 17 matches the width of the chute on the side surface of the second trapezoidal slider 18. By slidably connecting the slide rail of the first trapezoidal slider 17 with the chute of the second trapezoidal slider 18, it is ensured that the first trapezoidal slider 17 and the second trapezoidal slider 18 avoid tilting during sliding. A connecting vertical plate 16 is fixedly arranged at the top of the first trapezoidal slider 17. A slide rod 13 is fixedly arranged on the inner side of the top of the connecting vertical plate 16. The bottom of the slide rod 13 is slidably inserted into the inner wall of the temperature measuring tube 14. The bottom of the temperature measuring tube 14 is connected and communicated with the bottom of one side of the condensate collection tank 7.

[0028] Please refer to Figure 1, a limiting frame 15 is slidably sleeved in the middle of the connecting vertical plate 16. One end of the limiting frame 15 away from the connecting vertical plate 16 is fixedly arranged on one side of the condensate collection tank 7. The limiting frame 15 is arranged outside the connecting vertical plate 16 to ensure that the connecting vertical plate 16 can be vertical when moving and avoid tilting.

[0029] Please refer to Figure 3 , a third connecting pipe 20 is connected and arranged at the bottom on one side of the steam-water heat exchanger 11. Through the third connecting pipe 20, it is convenient to transport the heated liquid into the condensate collection tank 7. The bottom of the third connecting pipe 20 is connected to the top on one side of the condensate collection tank 7. An external valve is fixedly arranged at the bottom on the right side of the water-water heat exchanger 19. The external valve is convenient to supply the heated water to the hot water pipe network system.

[0030] Please refer to Figure 4 , the number of the arc-shaped clamping rods 21 is two. Arc-shaped auxiliary rods 10 are rotatably arranged at the left ends of the two arc-shaped clamping rods 21. A buckle 12 is clamped at a position of the arc-shaped auxiliary rod 10 away from the left end of the arc-shaped clamping rod 21. Through the clamping of the buckle 12 and the arc-shaped auxiliary rod 10, it is convenient to clamp and fix the steam-water heat exchanger 11 and the water-water heat exchanger 19 to avoid loosening of the steam-water heat exchanger 11 and the water-water heat exchanger 19 during use. The buckle 12 is fixedly arranged in the middle of the right end of the arc-shaped clamping rod 21. The two arc-shaped clamping rods 21 are respectively arranged at the bottoms of the steam-water heat exchanger 11 and the water-water heat exchanger 19. By arranging the two groups of arc-shaped clamping rods 21 at the bottoms of the steam-water heat exchanger 11 and the water-water heat exchanger 19 respectively, it is convenient to support the bottoms of the steam-water heat exchanger 11 and the water-water heat exchanger 19.

[0031] Please refer to Figure 5 , the middle of the switch board 8 penetrates through the middle of the drain valve box 4. A backing plate 23 is fixedly arranged at the left end of the switch board 8. A return spring 22 is fixedly arranged on the side of the backing plate 23 away from the switch board 8. By arranging the backing plate 23 and the return spring 22 at one end of the switch board 8, it is convenient for the switch board 8 to reset in time after moving. The other end of the return spring 22 is fixedly arranged on the side of the bottom support plate 1. First fixing rods 5 are arranged on both sides of the drain valve box 4. The first fixing rods 5 increase the stability of the drain valve box 4 during use and avoid shaking of the drain valve box 4 during use. The other ends of the first fixing rods 5 are fixedly arranged on the side of the bottom support plate 1. A drain hole is fixedly arranged in the middle of the switch board 8. By arranging the drain hole, it is convenient to coincide with the inner wall of the first connecting pipe 3 and convenient for the liquid to fall. The diameter of the drain hole in the middle of the switch board 8 is the same as the inner wall diameter of the first connecting pipe 3.

[0032] The implementation principle of a condensate heat recovery system in an embodiment of this application is as follows: conduct a comprehensive evaluation of the existing condensate and flash steam generation systems, including parameters such as production volume, temperature, and pressure, to determine the potential and feasibility of recovery. Install a steam-water heat exchanger 11 on the top of the condensate collection tank 7, so that the heat energy in the flash steam can be recovered. When the flash steam enters the steam-water heat exchanger 11, it will exchange heat with cold water and transfer its heat energy to the cold water to raise the temperature of the cold water. Install a water-water heat exchanger 19 below the condensate collection tank 7 to further recover the heat energy in the condensate. The cold water preliminarily heated by the steam-water heat exchanger 11 will conduct secondary heat exchange with the condensate to further increase the water temperature. When the water temperature inside the condensate collection tank 7 reaches a certain level, the sliding rod 13 inside the temperature measuring tube 14 moves upward. When the sliding rod 13 moves, it drives the first trapezoidal slider 17 to move upward through the connecting vertical plate 16. When the first trapezoidal slider 17 moves upward, it drives the second trapezoidal slider 18 to move to one side through the inclined plane. The second trapezoidal slider 18 drives the switch plate 8 to slide inside the drain valve box 4. When the drain hole in the middle of the switch plate 8 coincides with the first connecting pipe 3, the hot water inside the condensate collection tank 7 is allowed to flow through the first connecting pipe 3 into the water-water heat exchanger 19. The heated water can be connected to the hot water pipe network system to provide hot water supply for the building, thereby realizing the recycling of energy. When the temperature drops, the sliding rod 13 moves downward and drives the switch plate 8 to reset, closing the bottom of the first connecting pipe 3. By taking the above measures, the secondary flash steam generated during the condensate recovery process can be effectively reduced, the recovered water temperature can be increased, and the risk of pipeline corrosion can be reduced. At the same time, by comprehensively utilizing heat energy, the energy utilization efficiency of the entire system can also be improved.

[0033] The above are all preferred embodiments of this application, and the protection scope of this application is not limited thereby. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A condensed water heat recovery system, comprising a bottom support plate (1), characterized in that: A condensate collection tank (7), a steam-water heat exchanger (11) and a water-water heat exchanger (19) are arranged on the vertical side of the bottom support plate (1); a second connecting pipe (9) is arranged on one side of the condensate collection tank (7); an end of the second connecting pipe (9) away from the condensate collection tank (7) is connected to one side of the steam-water heat exchanger (11); the steam-water heat exchanger (11) is located above the condensate collection tank (7); an arc-shaped clamping rod (21) is arranged at the bottom of the outer circumferential surface of the steam-water heat exchanger (11); a fixing plate (2) is fixedly arranged in the middle of one side of the arc-shaped clamping rod (21); and an end of the fixing plate (2) away from the arc-shaped clamping rod (21) is fixedly arranged on the side of the bottom support plate (1); A first connecting pipe (3) is fixedly connected and provided in the middle position of the bottom of the condensed water collecting tank (7); one end of the first connecting pipe (3) away from the condensed water collecting tank (7) is connected to the top of the water-to-water heat exchanger (19); and the outer peripheral surface of the water-to-water heat exchanger (19) is clamped with the inner wall of the arc-shaped clamping rod (21); A drain valve box (4) is fixedly arranged in the middle of the first connecting pipe (3), a switch plate (8) is slidably arranged in the middle of the drain valve box (4), a second trapezoidal slider (18) is fixedly arranged at the right end of the switch plate (8), a first trapezoidal slider (17) is slidably arranged on the inclined surface of the second trapezoidal slider (18), a connecting vertical plate (16) is fixedly arranged on the top of the first trapezoidal slider (17), a sliding rod (13) is fixedly arranged on the inner side of the top of the connecting vertical plate (16), the bottom of the sliding rod (13) is slidably inserted into the inner wall of the temperature measuring tube (14), and the bottom of the temperature measuring tube (14) is connected to the bottom of one side of the condensate collecting tank (7).

2. A condensed water heat recovery system according to claim 1, characterized in that: Second fixing rods (6) are provided on both sides of the condensate collecting tank (7), and one end of the second fixing rod (6) away from the condensate collecting tank (7) is fixedly arranged in the middle of the vertical side of the bottom support plate (1), and the connection between the condensate collecting tank (7) and the second connecting pipe (9) is higher than the position of the third connecting pipe (20).

3. A condensed water heat recovery system according to claim 1, characterized in that: There are two arc-shaped clamping rods (21), and the left ends of the two arc-shaped clamping rods (21) are both rotatably provided with arc-shaped auxiliary rods (10). The arc-shaped auxiliary rod (10) is clamped with a buckle (12) at a position away from the left end of the arc-shaped clamping rod (21), and the buckle (12) is fixedly provided at the middle part of the right end of the arc-shaped clamping rod (21). The two arc-shaped clamping rods (21) are respectively provided at the bottom of the steam-water heat exchanger (11) and the water-water heat exchanger (19).

4. A condensed water heat recovery system according to claim 1, characterized in that: The middle part of the switch plate (8) passes through the middle part of the drain valve box (4); a pad (23) is fixedly arranged at the left end of the switch plate (8); a return spring (22) is fixedly arranged on the side of the pad (23) away from the switch plate (8); the other end of the return spring (22) is fixedly arranged on the side of the bottom support plate (1); first fixing rods (5) are arranged on both sides of the drain valve box (4); the other end of the first fixing rod (5) is fixedly arranged on the side of the bottom support plate (1); a drain hole is fixedly arranged in the middle part of the switch plate (8); the diameter of the drain hole in the middle part of the switch plate (8) is the same as the inner wall diameter of the first connecting pipe (3).

5. The condensed water heat recovery system according to claim 1, characterized in that: A slide rail is fixedly arranged in the middle of the inclined surface on one side of the first trapezoidal slide block (17), and the width of the slide rail on the side of the first trapezoidal slide block (17) matches the slide groove on the side of the second trapezoidal slide block (18).

6. A condensed water heat recovery system according to claim 1, characterized in that: The middle part of the connecting vertical plate (16) is slidably sleeved on the limiting frame (15), and one end of the limiting frame (15) away from the connecting vertical plate (16) is fixedly arranged on one side of the condensate collection tank (7).

7. The condensed water heat recovery system according to claim 1, characterized in that: A third connecting pipe (20) is provided at the bottom of one side of the steam-water heat exchanger (11), and the bottom of the third connecting pipe (20) is connected to the top of one side of the condensate collection tank (7). An external valve is fixedly provided at the bottom of the right side of the water-water heat exchanger (19).

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