Balance control device for recycling condensate water in boiler flue gas

Abstract

The utility model relates to the technical field of boiler equipment, and discloses a boiler flue gas condensate water recycling balance control device which comprises a neutralization tank, a flow control assembly and a partition plate, the partition plate is installed in a feeding box, an installation hole is formed in the upper surface of the partition plate, a sealing block is slidably connected in the installation hole, and the sealing block is arranged in the neutralization tank. A drainage channel is formed in the lower surface of the sealing block, and a plurality of water inlet holes are formed in the outer surface of the sealing block. When the amount of condensate water is increased, the upward moving amount of the sealing block is actively adjusted according to the situation, the effective flow section of the water inlet hole is enlarged to accelerate drainage, otherwise, the sealing block moves downwards to reduce the flow section to limit flow, and therefore closed-loop control over the flow is achieved. The flow can be matched with the condensate water generation rate and the system load change in real time, the original passively-responded gap opening behavior is upgraded to an active adjustable dynamic balance process essentially, and the effect of controlling the condensate water flow is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of boiler equipment, in particular to a boiler flue gas condensate water recovery and utilization balance control device. Background Art

[0002] When recovering the waste heat from boiler flue gas, the flue gas temperature is lowered to below the flue gas dew point temperature. This not only recycles the sensible heat of the flue gas, but also utilizes the latent heat released when a large amount of water vapor generated during the combustion of natural gas condenses. During the flue gas condensation process, it absorbs carbon dioxide in the atmosphere, making the condensed water acidic. Directly adding it into the boiler system will corrode the boiler and pipelines, so the condensed water needs to be acid neutralized.

[0003] The utility model patent application document with publication number "CN221451758U" discloses a boiler flue gas condensate recovery and utilization balance control device, which is mainly composed of a neutralization tank, a feed box and a complete condensation component. This technical solution condenses the water vapor mixed in the condensate entering the feed box through the cooperation of the set refrigerator, conical guide rod and guide arc body, and allows the partially condensed condensate to flow downward along the outer wall of the conical guide rod and the guide arc body, avoiding the condensate condensing on the internal top surface of the feed box and causing it to be unable to fall, affecting the completeness of the neutralization of the acidity of the flue gas condensate water, and through the cooperation of the set support rod, fixed plate, elastic part, sealing plate, fixed ring plate and rubber ring, the center of the feed box is water-sealed.

[0004] The boiler flue gas condensate recovery and utilization balancing control device disclosed in the above-mentioned document has the following defects: during the operation of the device, the increase in the amount of condensate will trigger the sealing plate to passively open and discharge. Although this design can cope with the drainage needs of instantaneous overload, its lack of the ability to actively adjust the flow will cause the system stability to face potential risks. Since the flow cannot be dynamically adjusted according to actual working conditions, when the condensate generation rate fluctuates violently, the device may cause a surge in downstream pipeline pressure or liquid retention due to excessive instantaneous drainage, increasing the risk of overflow or gas-liquid mixing. Utility Model Content

[0005] The purpose of the utility model is to provide a boiler flue gas condensate recovery and utilization balance control device to solve the problem of lack of active flow regulation capability, which makes it impossible to dynamically adjust the flow according to actual working conditions.

[0006] In order to solve the above technical problems, the present invention is achieved through the following technical solutions:

[0007] The utility model is a balance control device for the recovery and utilization of boiler flue gas condensate, comprising a neutralization tank, a feed box is installed at the upper end of the neutralization tank, a feed pipe is installed on the outer surface of the feed box, a detection circulation component is installed at the lower end of the neutralization tank, a flow control component is arranged inside the feed box, and the flow control component comprises a partition plate, the partition plate is installed inside the feed box, a mounting hole is provided on the upper surface of the partition plate, a sealing block is slidably connected to the inside of the mounting hole, a drainage channel is provided on the lower surface of the sealing block, a plurality of water inlet holes are provided on the outer surface of the sealing block, and one end of the water inlet hole extends to the inside of the drainage channel.

[0008] Furthermore, a vertical plate is provided on the upper surface of the partition plate, a mounting hole is opened on the outer surface of the vertical plate, a rotating shaft is rotatably connected inside the mounting hole, a turntable is installed on one end of the rotating shaft, and the other end of the rotating shaft passes through the feed box and is installed with a gear, the upper surface of the sealing block is hinged with a connecting plate, an extension rod is installed on the other end of the connecting plate, and one end of the extension rod is installed on the outer surface of the turntable.

[0009] Furthermore, a connecting seat is installed on the outer surface of the feed box, and a worm gear is rotatably connected to the inside of the connecting seat. A motor is installed on one side of the connecting seat, and the output end of the motor is installed with the worm gear through a coupling, and the worm gear is meshingly connected with the gear.

[0010] Furthermore, a guide rod is provided on the upper surface of the partition plate, a connecting block is provided on the upper surface of the sealing block, the connecting block is slidably connected to the outer surface of the guide rod, a sealing ring is installed on the lower surface of the partition plate, and the sealing block is located in the middle of the sealing ring.

[0011] Furthermore, one end of the feed pipe is threadedly connected to a cover body, an exhaust hole is opened on the outer surface of the cover body, a blocking block is provided inside the exhaust hole, a mounting plate is installed on one side of the blocking block, two protrusions are provided on the outer surface of the cover body, a connecting rod is installed between the two protrusions, one end of the mounting plate is hinged to the outer surface of the connecting rod, a torsion spring is sleeved on the outer surface of the connecting rod, one end of the torsion spring is installed on the outer surface of the protrusion, and the other end of the torsion spring is installed on the outer surface of the mounting plate.

[0012] Furthermore, a refrigerator is installed on the upper surface of the feed box, a guide arc body is installed on the inner top of the feed box, and a conical guide rod is installed on the lower surface of the guide arc body.

[0013] The utility model has the following beneficial effects:

[0014] (1) The motor of the utility model drives the worm gear to rotate through the coupling. The meshing action of the worm gear transmits power to the gear, driving the rotating shaft and the turntable to rotate synchronously. The rotational motion of the turntable drives the connecting plate to rotate through the extension rod. Since one end of the connecting plate is hinged to the sealing block, it is converted into a linear displacement of the sealing block, forcing the sealing block to slide vertically along the guide rod. By changing the relative position of the sealing block and the partition plate, the exposed area of ​​the water inlet hole in the partition plate area is dynamically adjusted, thereby controlling the interception rate of condensate entering the drainage channel through the water inlet hole. When the amount of condensate increases, the upward movement of the sealing block is actively adjusted according to the situation to expand the effective flow section of the water inlet hole to accelerate drainage. Conversely, the sealing block moves downward to reduce the flow section to limit the flow, thereby realizing closed-loop control of the flow. Through mechanical transmission, the flow can match the condensate generation rate and system load changes in real time. In essence, the original passive response gap opening behavior is upgraded to an active and adjustable dynamic balance process to achieve the effect of controlling the condensate flow.

[0015] (2) When pressure fluctuations occur in the feed pipe of the utility model due to the flow of condensed water or temperature changes, the internal air pressure acts on the surface of the block. If the pressure exceeds the preset torque threshold of the torsion spring, the block pushes the mounting plate to rotate around the connecting rod, so that the exhaust hole opens and releases the pressure. When the pressure drops back to the equilibrium state, the torsion spring drives the mounting plate to rotate in the opposite direction through elastic reset, driving the block to re-close the exhaust hole. This linkage mechanism realizes the adaptive opening and closing of the exhaust hole through the dynamic counteraction of air pressure and spring force, which not only avoids leakage or air blockage caused by pressure accumulation in the feed pipe, but also prevents the backflow of external pollutants, thereby maintaining the air tightness and pressure stability of the system.

[0016] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the feed box structure of the utility model;

[0020] Figure 3 This is the structural section of the feed box of the utility model Figure 1 ;

[0021] Figure 4This is the structural section of the feed box of the utility model Figure 2 ;

[0022] Figure 5 This is a schematic diagram of the feed pipe structure of the utility model Figure 1 ;

[0023] Figure 6 This is a schematic diagram of the feed pipe structure of the utility model Figure 2 ;

[0024] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0025] In the figure: 1. Neutralization tank; 2. Feed box; 3. Feed pipe; 4. Detection circulation component; 501. Partition plate; 502. Sealing block; 503. Water inlet hole; 504. Vertical plate; 505. Rotating shaft; 506. Turntable; 507. Gear; 508. Connecting plate; 509. Extension rod; 5010. Connecting seat; 5011. Worm gear; 5012. Motor; 5013. Guide rod; 5014. Connecting block; 5015. Sealing ring; 6. Cover; 601. Bump; 7. Block; 8. Mounting plate; 9. Connecting rod; 10. Torsion spring; 11. Refrigerator; 12. Guide arc body; 13. Conical guide rod. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figures 1-6 As shown, the utility model is a boiler flue gas condensate recycling and utilization balance control device, including a neutralization tank 1, a feed box 2 is installed at the upper end of the neutralization tank 1, a feed pipe 3 is installed on the outer surface of the feed box 2, a detection circulation component 4 is installed at the lower end of the neutralization tank 1, and a flow control component is provided inside the feed box 2. The flow control component includes a partition plate 501, the partition plate 501 is installed inside the feed box 2, a mounting hole is provided on the upper surface of the partition plate 501, a sealing block 502 is slidably connected to the inside of the mounting hole, a drainage channel is provided on the lower surface of the sealing block 502, and a plurality of water inlet holes 503 are provided on the outer surface of the sealing block 502, and one end of the water inlet hole 503 extends to the inside of the drainage channel;

[0028] When the amount of condensed water increases, the upward movement of the sealing block 502 is actively adjusted according to the situation, expanding the effective flow cross-section of the water inlet hole 503 to accelerate drainage. Conversely, the sealing block 502 moves downward to reduce the flow cross-section to limit the flow, thereby achieving closed-loop control of the flow rate. Through mechanical transmission, the flow rate can be matched in real time to the condensed water generation rate and system load changes. In essence, the original passive response gap opening behavior is upgraded to an active and adjustable dynamic balancing process, achieving the effect of controlling the condensed water flow rate.

[0029] A vertical plate 504 is provided on the upper surface of the partition plate 501. A mounting hole is provided on the outer surface of the vertical plate 504. A rotating shaft 505 is rotatably connected to the interior of the mounting hole. A turntable 506 is installed at one end of the rotating shaft 505. The other end of the rotating shaft 505 passes through the feed box 2 and is installed with a gear 507. A connecting plate 508 is hingedly connected to the upper surface of the sealing block 502. An extension rod 509 is installed at the other end of the connecting plate 508. One end of the extension rod 509 is installed on the outer surface of the turntable 506.

[0030] A connecting seat 5010 is installed on the outer surface of the feed box 2, and a worm gear 5011 is rotatably connected to the interior of the connecting seat 5010. A motor 5012 is installed on one side of the connecting seat 5010. The output end of the motor 5012 is installed with the worm gear 5011 through a coupling, and the worm gear 5011 is meshed with the gear 507.

[0031] A guide rod 5013 is further provided on the upper surface of the partition plate 501, and a connecting block 5014 is provided on the upper surface of the sealing block 502. The connecting block 5014 is slidably connected to the outer surface of the guide rod 5013. A sealing ring 5015 is installed on the lower surface of the partition plate 501, and the sealing block 502 is located in the middle of the sealing ring 5015.

[0032] When the sealing block 502 moves vertically along the guide rod 5013, the annular gap between it and the partition plate 501 is filled by the elastic deformation of the sealing ring 5015, forming a dynamic sealing interface. This allows the sealing block 502 to slide freely when adjusting the flow rate, and the radial compression force of the sealing ring 5015 continuously blocks the leakage of condensate through the undesigned path between the partition plate 501 and the sealing block 502. This ensures that all condensate is forced to flow through the controlled area of ​​the water inlet hole 503 during the flow adjustment process, preventing bypass leakage from interfering with the flow calculation accuracy and system water balance.

[0033] One end of the feed pipe 3 is threadedly connected to a cover body 6, an exhaust hole is opened on the outer surface of the cover body 6, a block 7 is provided inside the exhaust hole, a mounting plate 8 is installed on one side of the block 7, two protrusions 601 are provided on the outer surface of the cover body 6, a connecting rod 9 is installed between the two protrusions 601, one end of the mounting plate 8 is hinged to the outer surface of the connecting rod 9, and a torsion spring 10 is sleeved on the outer surface of the connecting rod 9, one end of the torsion spring 10 is installed on the outer surface of the protrusion 601, and the other end of the torsion spring 10 is installed on the outer surface of the mounting plate 8;

[0034] When pressure fluctuations occur in the feed pipe 3 due to the flow of condensed water or temperature changes, the internal air pressure acts on the surface of the block 7. If the pressure exceeds the preset torque threshold of the torsion spring 10, the block 7 pushes the mounting plate 8 to rotate around the connecting rod 9, so that the exhaust hole is opened to release the pressure. When the pressure drops to a balanced state, the torsion spring 10 elastically resets and drives the mounting plate 8 to rotate in the opposite direction, driving the block 7 to reclose the exhaust hole. This linkage mechanism realizes adaptive opening and closing of the exhaust hole through the dynamic balance of air pressure and spring force, which not only avoids leakage or air blockage caused by pressure accumulation in the feed pipe 3, but also prevents the backflow of external contaminants, thereby maintaining the air tightness and pressure stability of the system.

[0035] A refrigerator 11 is installed on the upper surface of the feed box 2, a guide arc 12 is installed on the inner top of the feed box 2, and a conical guide rod 13 is installed on the lower surface of the guide arc 12;

[0036] Through the cooperation of the refrigerator 11, the conical guide rod 13 and the guide arc 12, the water vapor mixed in the condensed water entering the feed box 2 can be condensed, and the partially condensed condensed water can flow downward along the outer wall of the conical guide rod 13 and the guide arc 12, thereby avoiding the condensed water condensing on the internal top surface of the feed box 2 and being unable to fall, affecting the completeness of the acidity neutralization of the flue gas condensed water.

[0037] When in use, first install the external exhaust pipe and the feed pipe 3, and then start the control valve of the external exhaust pipe to make the internal air pressure of the feed pipe 3 act on the surface of the block 7. If the pressure exceeds the preset torque threshold of the torsion spring 10, the block 7 pushes the mounting plate 8 to rotate around the connecting rod 9, so that the exhaust hole is opened to release the pressure. When the pressure drops to the equilibrium state, the torsion spring 10 drives the mounting plate 8 to rotate in the opposite direction through elastic reset, driving the block 7 to re-close the exhaust hole. After the gas enters the feed box 2, the refrigerator 11 is started to reduce the pressure. The temperature of the guide arc 12 and the conical guide rod 13 is low, and when the flue gas condensate mixed with part of the water vapor is passed into the interior of the feed box 2 and contacts the guide arc 12 and the conical guide rod 13, it will quickly condense when it is cooled and flow downward along the outer surface of the guide arc 12 and the conical guide rod 13. The condensate accumulates on the upper surface of the partition plate 501, and then the motor 5012 is started, so that the motor 5012 drives the worm gear 5011 to rotate through the coupling, and the meshing action of the worm gear 5011 transmits power to the gear The wheel 507 drives the rotating shaft 505 and the rotating disk 506 to rotate synchronously. The rotating motion of the rotating disk 506 drives the connecting plate 508 to rotate through the extension rod 509. Since one end of the connecting plate 508 is hinged to the sealing block 502, it is converted into a linear displacement of the sealing block 502, forcing the sealing block 502 to slide vertically along the guide rod 5013. By changing the relative position of the sealing block 502 and the partition plate 501, the exposed area of ​​the water inlet hole 503 in the partition plate 501 area is dynamically adjusted, thereby controlling the condensed water to pass through the water inlet hole 503. 3. The interception rate of the flow entering the drainage channel. When the amount of condensed water increases, the upward movement of the sealing block 502 is actively adjusted according to the situation, expanding the effective flow cross-section of the water inlet 503 to accelerate drainage. Conversely, the sealing block 502 moves downward to reduce the flow cross-section to limit the flow, thereby achieving closed-loop control of the flow rate. Through mechanical transmission, the flow rate can be matched in real time to the condensed water generation rate and system load changes. In essence, the original passive response of the gap opening behavior is upgraded to an active and adjustable dynamic balance process, achieving the effect of controlling the condensed water flow rate.

[0038] When the sealing block 502 moves vertically along the guide rod 5013, the annular gap between it and the partition plate 501 is filled by the elastic deformation of the sealing ring 5015, forming a dynamic sealing interface, which allows the sealing block 502 to slide freely when adjusting the flow, and continuously blocks the leakage of condensed water through the non-designed path between the partition plate 501 and the sealing block 502 through the radial compression force of the sealing ring 5015, thereby ensuring that all condensed water is forced to flow through the controlled area of ​​the water inlet hole 503 during the flow adjustment process, avoiding interference of bypass leakage on the flow calculation accuracy and system water balance.

[0039] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. The preferred embodiments do not describe all details in detail, nor do they limit the present invention to the specific embodiments described. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A boiler flue gas condensate recycling and utilization balance control device, comprising a neutralization tank (1), a feed box (2) installed at the upper end of the neutralization tank (1), a feed pipe (3) installed on the outer surface of the feed box (2), and a detection circulation component (4) installed at the lower end of the neutralization tank (1), characterized in that: A flow control component is provided inside the feed box (2); The flow control assembly comprises a partition plate (501), the partition plate (501) being mounted inside the feed box (2), a mounting hole being provided on the upper surface of the partition plate (501), a sealing block (502) being slidably connected inside the mounting hole, a drainage channel being provided on the lower surface of the sealing block (502), and a plurality of water inlet holes (503) being provided on the outer surface of the sealing block (502), one end of the water inlet hole (503) extending into the interior of the drainage channel.

2. The boiler flue gas condensate recovery and utilization balance control device according to claim 1, characterized in that: The upper surface of the partition plate (501) is provided with a vertical plate (504), the outer surface of the vertical plate (504) is provided with a mounting hole, the interior of the mounting hole is rotatably connected to a rotating shaft (505), one end of the rotating shaft (505) is installed with a turntable (506), and the other end of the rotating shaft (505) passes through the feed box (2) and is installed with a gear (507); A connecting plate (508) is hingedly connected to the upper surface of the sealing block (502), an extension rod (509) is installed at the other end of the connecting plate (508), and one end of the extension rod (509) is installed on the outer surface of the rotating disk (506).

3. The boiler flue gas condensate recovery and utilization balance control device according to claim 2, characterized in that: A connecting seat (5010) is installed on the outer surface of the feed box (2), and a worm gear (5011) is rotatably connected inside the connecting seat (5010). A motor (5012) is installed on one side of the connecting seat (5010), and the output end of the motor (5012) is installed with the worm gear (5011) through a coupling, and the worm gear (5011) is meshed with the gear (507).

4. The boiler flue gas condensate recovery and utilization balance control device according to claim 2, characterized in that: The upper surface of the partition plate (501) is further provided with a guide rod (5013), the upper surface of the sealing block (502) is provided with a connecting block (5014), the connecting block (5014) is slidably connected to the outer surface of the guide rod (5013), and a sealing ring (5015) is installed on the lower surface of the partition plate (501), and the sealing block (502) is located in the middle of the sealing ring (5015).

5. The boiler flue gas condensate recovery and utilization balance control device according to claim 1, characterized in that: One end of the feed pipe (3) is threadedly connected to a cover body (6), an exhaust hole is provided on the outer surface of the cover body (6), a block (7) is provided inside the exhaust hole, a mounting plate (8) is installed on one side of the block (7), two protrusions (601) are provided on the outer surface of the cover body (6), a connecting rod (9) is installed between the two protrusions (601), one end of the mounting plate (8) is hinged to the outer surface of the connecting rod (9), a torsion spring (10) is sleeved on the outer surface of the connecting rod (9), one end of the torsion spring (10) is installed on the outer surface of the protrusion (601), and the other end of the torsion spring (10) is installed on the outer surface of the mounting plate (8).

6. The boiler flue gas condensate recovery and utilization balance control device according to claim 1, characterized in that: A refrigerator (11) is installed on the upper surface of the feed box (2), a guide arc body (12) is installed on the inner top of the feed box (2), and a conical guide rod (13) is installed on the lower surface of the guide arc body (12).

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