Pressure-bearing steam boiler with condensation recovery

Abstract

The utility model relates to steam boiler technical field discloses a kind of pressure-bearing steam boiler with condensation recovery, including boiler body, the boiler body side is fixedly connected with flue gas pipe, the flue gas pipe side is provided with condensation recovery component, the condensation recovery component includes condenser, the condenser side is fixedly connected in the flue gas pipe one end, the condenser bottom is slidably connected with collection box, the collection box inside is fixedly connected with filter screen, the condenser bottom is fixedly connected with sealing ring.In the utility model, by condenser, condensation can be efficiently recovered, by filter screen, impurity particles can be filtered, by pressing extrusion rod, the unlocking can be realized by driving the clamping column to separate from the clamping block clamping, and then the effect of conveniently cleaning and maintaining the condenser and filter screen for the user is achieved, the problem of high-temperature flue gas and uncondensed acidic water vapor continuously corroding the tail heating surface in the prior art is solved, which leads to shortening of equipment life, high maintenance cost, and significantly improves the boiler thermal efficiency.

Description

Technical Field

[0001] This utility model relates to the field of steam boiler technology, and in particular to a pressurized steam boiler with condensate recovery. Background Technology

[0002] In industrial production, district heating, and other fields, pressurized steam boilers are core thermal energy equipment. Their energy utilization efficiency and environmental performance directly affect production economy and the ecological environment. With the intensification of global energy shortage and increasingly stringent environmental regulations, traditional steam boilers have generally low thermal efficiency due to high flue gas temperatures and the failure to recover a large amount of sensible heat and latent heat of water vapor in the flue gas. Furthermore, pollutants such as nitrogen oxides and sulfides contained in the high-temperature flue gas are directly emitted, exacerbating air pollution. Against this backdrop, pressurized steam boilers with condensation recovery technology, which recover waste heat from flue gas and reduce pollutant emissions, have become an important direction for industry development.

[0003] In existing technologies, the flue gas treatment system of traditional pressurized steam boilers mainly relies on the tail heating surface for preliminary heat recovery. Its mechanical structure usually includes core components such as furnace, convection tube bundle, economizer, induced draft fan and chimney. The technical principle is as follows: fuel is burned in the furnace to generate high-temperature flue gas, which flows through the furnace radiant heating surface and convection heating surface in sequence, transferring heat to the water in the boiler drum to generate steam. The cooled flue gas is preheated by the economizer to preheat the boiler feedwater, and then sent into the chimney by the induced draft fan for discharge. Some boilers will add simple flue gas purification devices, but they do not recover the latent heat of water vapor in the flue gas, and the exhaust temperature is still higher than the flue gas dew point, so the condensation process cannot be realized.

[0004] However, in existing technologies, because the flue gas remains at a high temperature before emission, the water vapor in the flue gas always exists in gaseous form. The large amount of latent heat contained within it is directly emitted with the flue gas, leading to significant energy waste. Simultaneously, the long-term impact of high-temperature flue gas on the tail-end heating surfaces easily causes oxidation and corrosion, and the direct emission of pollutants from uncondensed flue gas limits environmental performance. Among these issues, the continuous corrosion of the tail-end heating surfaces by high-temperature flue gas and uncondensed acidic water vapor is a key problem in existing technologies that leads to shortened equipment lifespan and high maintenance costs. Utility Model Content

[0005] To overcome the above shortcomings, this utility model provides a pressurized steam boiler with condensate recovery, which aims to improve the problem in the prior art of continuous corrosion of the tail heating surface by high-temperature flue gas and uncondensed acidic water vapor, resulting in shortened equipment life and high maintenance costs.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a pressurized steam boiler with condensate recovery, comprising a boiler body, wherein a flue pipe is fixedly connected to one side of the boiler body, and a condensate recovery assembly is provided on one side of the flue pipe;

[0007] The condensation recovery assembly includes a condenser, one side of which is fixedly connected to one end of the exhaust pipe. A collection box is slidably connected to the bottom of the condenser, and a filter screen is fixedly connected inside the collection box. A sealing ring is fixedly connected to the bottom of the condenser. A connecting pipe is fixedly connected to one side of the collection box. Symmetrical locking blocks are fixedly connected to the bottom of the condenser. Support plates are fixedly connected to both sides of the collection box. A squeezing rod is slidably connected inside each of the support plates. A locking post is fixedly connected to the side wall of each of the squeezing rods. The locking post engages with the locking block. A shrinking rod is fixedly connected to the side wall of one of the squeezing rods. The other end of the shrinking rod is fixedly connected to the side wall of another squeezing rod. A recovery assembly is sleeved on the outer wall of the shrinking rod. A connecting assembly is provided on the outer wall of the connecting pipe.

[0008] Furthermore, the recovery assembly includes a spring, both ends of which are fixedly connected to the sidewalls of the plurality of compression rods.

[0009] Furthermore, the connecting assembly includes a first connecting ring and a second connecting ring, both of which are slidably connected to the outer wall of the connecting pipe. A sealing ring is fixedly connected to the inner wall of the first connecting ring. The sealing ring is made of rubber and fits snugly at the connection point of the connecting pipe.

[0010] Furthermore, a left-right symmetrical limiting block is fixedly connected to one outer wall of the connecting ring, and a left-right symmetrical connecting block is fixedly connected to the two side walls of the connecting ring.

[0011] Furthermore, each of the multiple connecting blocks has a connecting post fixedly connected inside, and each of the multiple connecting posts has a sliding rod slidably connected inside.

[0012] Furthermore, each of the sliding rods has a pressing block fixedly connected to its outer wall, and the pressing block is conical.

[0013] Furthermore, multiple limiting balls are slidably connected inside the multiple connecting columns, the outer walls of the multiple limiting balls are in contact with the extrusion block, and the multiple limiting balls are engaged with the limiting block.

[0014] Furthermore, multiple sliding rods are fitted with springs on their outer walls, and one end of each spring is fixedly connected to the inner wall of the connecting column, while the other end is fixedly connected to the side wall of the extrusion block.

[0015] This utility model has the following beneficial effects:

[0016] 1. In this utility model, when exhausting gas through the flue pipe, the condenser can efficiently recover the condensate, and then the condensate can be discharged externally through the connecting pipe. Impurities and particles can be filtered through the filter screen. Pressing the squeezing rod can drive the locking pin to disengage from the locking block to unlock it, thereby facilitating the cleaning and maintenance of the condenser and filter screen by the user. At the same time, the condenser can effectively reduce the corrosive effect of acidic condensate on the equipment, solving the problem in the prior art of continuous corrosion of the tail heating surface by high temperature flue gas and uncondensed acidic water vapor, resulting in shortened equipment life and high maintenance costs, and significantly improving the boiler thermal efficiency.

[0017] 2. In this utility model, pressing the sliding rod causes it to move the extrusion block, thereby releasing the limiting ball, which can slide freely inside the connecting column and the limiting block. The sealing ring ensures the connection is sealed, thus achieving the effect of quickly connecting external pipes or equipment, solving the problem of cumbersome traditional connection methods, and improving the connection efficiency between the condenser and external equipment. Attached Figure Description

[0018] Figure 1 This is a perspective view of a pressurized steam boiler with condensate recovery according to the present invention.

[0019] Figure 2 This is a schematic diagram of one side of the boiler body of a pressurized steam boiler with condensate recovery proposed in this utility model;

[0020] Figure 3 for Figure 2 Enlarged view of the structure at point A in the middle;

[0021] Figure 4 This is a schematic diagram of one side of the condenser of a pressurized steam boiler with condensation recovery proposed in this utility model;

[0022] Figure 5 for Figure 4 Enlarged view of the structure at point B.

[0023] Legend:

[0024] 1. Boiler body; 2. Exhaust pipe; 3. Condenser; 4. Collection box; 5. Filter screen; 6. Sealing ring; 7. Clamping block; 8. Support plate; 9. Extrusion rod; 10. Clamping column; 11. Retraction rod; 12. Spring 1; 13. Connecting pipe; 14. Connecting ring 1; 15. Connecting ring 2; 16. Sealing ring; 17. Limiting block; 18. Connecting block; 19. Connecting column; 20. Sliding rod; 21. Extrusion block; 22. Limiting ball; 23. Spring 2. Detailed Implementation

[0025] 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.

[0026] Reference Figure 1 - Figure 3 The present invention provides an embodiment of a pressurized steam boiler with condensate recovery, comprising a boiler body 1, which serves as the core device for steam generation. The boiler body 1 generates high-pressure steam by heating water through fuel combustion. A flue pipe 2 is fixedly connected to one side of the boiler body 1. The flue pipe 2 is used to exhaust the high-temperature flue gas generated by combustion inside the boiler body 1. A condensate recovery component is provided on one side of the flue pipe 2, which can efficiently recover heat and condensate from the flue gas.

[0027] The condensation recovery assembly includes a condenser 3, which serves as the core component for heat exchange. The condenser 3 contains multiple sets of heat exchange pipes to facilitate sufficient heat exchange between the flue gas and the low-temperature medium. One side of the condenser 3 is fixedly connected to one end of the exhaust pipe 2, allowing high-temperature flue gas to directly enter the condenser 3. A collection box 4 is slidably connected to the bottom of the condenser 3 to collect the liquid water produced by condensation within the condenser 3. A filter screen 5 is fixedly connected inside the collection box 4, horizontally positioned in the upper half of the box, to perform preliminary filtration of soot, impurities, etc., in the condensate. A sealing ring 6 is fixedly connected to the bottom of the condenser 3. When the collection box 4 is connected to the condenser 3, the sealing ring 6 fits tightly against the top edge of the collection box 4 to prevent condensate leakage. A connecting pipe 13 is fixedly connected to one side of the collection box 4 to transport the filtered condensate to a subsequent treatment or reuse system. Symmetrical locking blocks 7 are fixedly connected to the bottom of the condenser 3. Both sides of the collection box 4 are fixedly connected... A support plate 8 is attached, and multiple support plates 8 are slidably connected to each other with a squeezing rod 9. Each squeezing rod 9 is fixedly connected to a locking post 10 on its side wall. The locking post 10 engages with the locking block 7. When the collection box 4 is installed in place, the locking post 10 can be embedded into the groove of the locking block 7 for fixation. One squeezing rod 9 is fixedly connected to a shrinking rod 11 on its side wall. The shrinking rod 11 can extend and retract with the movement of the squeezing rod 9. The outer wall of the shrinking rod 11 is fitted with a recovery component. The recovery component is used to maintain the locking post 10 and the locking block 7 in the locked state when no external force is applied. The other end of the shrinking rod 11 is fixedly connected to the side wall of another squeezing rod 9. The outer wall of the shrinking rod 11 is fitted with a recovery component, which includes a spring 12. Both ends of the spring 12 are fixedly connected to the side walls of multiple squeezing rods 9. In the natural state, the spring 12 is in a stretched state. It can pull the two squeezing rods 9 closer together by elastic force, so that the locking post 10 is tightly locked in the locking block 7. The outer wall of the connecting pipe 13 is provided with a connecting component. The connecting component is used to realize the quick sealing connection between the connecting pipe 13 and the external pipe.

[0028] Reference Figure 4 and Figure 5The connecting assembly includes a first connecting ring 14 and a second connecting ring 15. Both connecting ring 14 and second connecting ring 15 are slidably connected to the outer wall of the connecting pipe 13. A sealing ring 16 is fixedly connected to the inner wall of the first connecting ring 14. The sealing ring 16 is made of rubber and is arranged circumferentially along the inner wall of the first connecting ring 14. The sealing ring 16 fits against the connection point of the connecting pipe 13, which can enhance the sealing between the first connecting ring 14 and the connecting pipe 13. A symmetrical limiting block 17 is fixedly connected to the outer wall of the first connecting ring 14. A symmetrical connecting block 18 is fixedly connected to the side wall of the second connecting ring 15. A connecting post 19 is fixedly connected inside each of the multiple connecting blocks 18. A sliding rod 20 is slidably connected inside each of the multiple connecting posts 19. An extrusion rod is fixedly connected to the outer wall of each of the multiple sliding rods 20. The pressure block 21 is conical, with its diameter gradually increasing from one end near the sliding rod 20 to the other. Multiple limiting balls 22 are slidably connected inside the multiple connecting columns 19. The limiting balls 22 are radially distributed along the connecting columns 19 and can roll freely within the through holes of the connecting columns 19. The limiting balls 22 can be embedded in the arc-shaped groove of the limiting block 17 to fix the connecting ring 14 and the connecting ring 25. The outer walls of the multiple limiting balls 22 are in contact with the pressure block 21, and the multiple limiting balls 22 are engaged with the limiting block 17. The outer walls of the multiple sliding rods 20 are fitted with springs 23. In the natural state, the springs 23 are in a compressed state and can push the pressure block 21 to maintain the pressure on the limiting balls 22. One end of each of the multiple springs 23 is fixedly connected to the inner wall of the connecting column 19, and the other end is fixedly connected to the side wall of the pressure block 21.

[0029] Working principle: When using this pressurized steam boiler with condensate recovery, the high-temperature flue gas generated by the combustion of the boiler body 1 flows through the exhaust pipe 2 and passes through the condenser 3, where it undergoes efficient heat exchange with the low-temperature medium in the condenser 3, causing the flue gas temperature to drop below the dew point. The water vapor in the flue gas condenses into liquid water and releases a large amount of latent heat of vaporization. The sensible heat of the flue gas and the latent heat released by the condensation of water vapor are transferred to the low-temperature medium through the condenser 3, raising the medium temperature to reduce boiler fuel consumption. At the same time, the condensate is collected and filtered through the filter screen 5, and then reused as makeup water for the boiler body 1, thereby realizing the recovery and reuse of heat energy and water resources in the flue gas. The filtered condensate can be collected in a collection box 4. When the filtration effect of the filter screen 5 decreases and needs to be cleaned, multiple squeezing rods 9 can be pressed by personnel at the same time, which can drive multiple squeezing rods 9 to slide inside the support plate 8, thereby causing the contraction rod 11 to deform elastically and store elastic potential energy. While the squeezing rods 9 are sliding, the locking pin 10 will also disengage from the locking block 7 to unlock, thereby allowing the collection box 4 to be quickly disassembled and the filter screen 5 to be cleaned.

[0030] When it is necessary to connect the collection box 4 to an external pipe or equipment to utilize condensate, the user applies the external pipe to the connecting pipe 13, and then presses the sliding rod 20 to cause the squeezing block 21 to slide inside the connecting column 19. When the squeezing block 21 slides, the limiting ball 22 will be released. Since the limiting ball 22 is no longer restricted by the squeezing block 21, it can slide freely inside the connecting column 19 and the limiting block 17. Then, by applying the connecting ring 14 and the connecting ring 25 to the connection point, and by inserting the connecting ring 25 into the limiting block 17, the pressing force is released. The elastic restoring force of the spring 23 pushes the squeezing block 21 to reset, thereby squeezing the limiting ball 22 into the internal groove of the limiting block 17, thus achieving locking. The sealing ring 16 ensures the sealing of the connection, making it convenient for the user to quickly connect the equipment.

[0031] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A pressurized steam boiler with condensate recovery, comprising a boiler body (1), characterized in that: A flue pipe (2) is fixedly connected to one side of the boiler body (1), and a condensation recovery assembly is provided on one side of the flue pipe (2). The condensation recovery assembly includes a condenser (3), one side of which is fixedly connected to one end of the exhaust pipe (2). A collection box (4) is slidably connected to the bottom of the condenser (3). A filter screen (5) is fixedly connected inside the collection box (4). A sealing ring (6) is fixedly connected to the bottom of the condenser (3). A connecting pipe (13) is fixedly connected to one side of the collection box (4). Symmetrical locking blocks (7) are fixedly connected to the bottom of the condenser (3). Both sides of the collection box (4) are fixedly connected to... Support plate (8), and a plurality of support plates (8) are slidably connected with extrusion rods (9). A locking post (10) is fixedly connected to the side wall of each of the plurality of extrusion rods (9). The locking post (10) engages with the locking block (7). A shrinking rod (11) is fixedly connected to the side wall of one of the extrusion rods (9). The other end of the shrinking rod (11) is fixedly connected to the side wall of another extrusion rod (9). A recovery component is sleeved on the outer wall of the shrinking rod (11). A connecting component is provided on the outer wall of the connecting pipe (13).

2. A pressurized steam boiler with condensate recovery according to claim 1, characterized in that: The recovery assembly includes a spring (12), both ends of which are fixedly connected to the sidewalls of the plurality of compression rods (9).

3. A pressurized steam boiler with condensate recovery according to claim 2, characterized in that: The connecting assembly includes a first connecting ring (14) and a second connecting ring (15). Both the first connecting ring (14) and the second connecting ring (15) are slidably connected to the outer wall of the connecting tube (13). A sealing ring (16) is fixedly connected to the inner wall of the first connecting ring (14). The sealing ring (16) is made of rubber and fits against the connection point of the connecting tube (13).

4. A pressurized steam boiler with condensate recovery according to claim 3, characterized in that: The outer wall of the first connecting ring (14) is fixedly connected with left and right symmetrical limiting blocks (17), and the side wall of the second connecting ring (15) is fixedly connected with left and right symmetrical connecting blocks (18).

5. A pressurized steam boiler with condensate recovery according to claim 4, characterized in that: Each of the multiple connecting blocks (18) has a connecting post (19) fixedly connected inside, and each of the multiple connecting posts (19) has a sliding rod (20) slidably connected inside.

6. A pressurized steam boiler with condensate recovery according to claim 5, characterized in that: Each of the sliding rods (20) has a pressing block (21) fixedly connected to its outer wall, and the pressing block (21) is conical.

7. A pressurized steam boiler with condensate recovery according to claim 6, characterized in that: Multiple limiting balls (22) are slidably connected inside the multiple connecting columns (19), the outer walls of the multiple limiting balls (22) are in contact with the extrusion block (21), and the multiple limiting balls (22) are engaged with the limiting block (17).

8. A pressurized steam boiler with condensate recovery according to claim 7, characterized in that: Multiple sliding rods (20) are fitted with springs (23) on their outer walls. One end of each spring (23) is fixedly connected to the inner wall of the connecting column (19), and the other end is fixedly connected to the side wall of the extrusion block (21).

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