Chimney capable of recycling condensate water

Abstract

The utility model relates to a chimney capable of recovering condensate water, which is provided with a smoke outlet pipe and a chimney body, and a condensate water collector is connected between the smoke outlet pipe and the chimney body. A connecting pipe and a drain pipe are arranged in the condensate water collector, and a water collecting groove formed by the water collecting top provided with the flue gas channel and the inner wall of the connecting pipe is communicated with the drain pipe in the connecting pipe; the flow guide block is fixed in the connecting pipe above the water collecting top or the chimney body, and the outer diameter of the flow guide block is larger than the inner diameter of the smoke channel in the water collecting top, so that condensate water dripping from the top of the chimney body flows into the water collecting groove through the flow guide block. Due to the fact that the condensate water collector and the flow guide block are arranged at the connecting position of the smoke outlet pipe and the chimney body, condensate water which drips and flows downwards along the inner wall of the chimney body can be effectively collected. Collected condensate water is conveyed into the water tank of the heating furnace through the pipeline, uninterrupted automatic water adding to the heating furnace is achieved, the labor intensity of workers is reduced, the use of a water pulling vehicle is reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of condensed water collection and recovery of chimneys, in particular to a chimney capable of recovering condensed water. Background Art

[0002] In the oil industry, the water jacket heater has become a commonly used device for heating crude oil because of its advantages such as high heating efficiency, long service life and easy maintenance. The water jacket heater can reduce the viscosity of crude oil and increase its fluidity, thereby improving the output and oil recovery efficiency of oil wells. In the process of oil and gas gathering and transportation, in order to ensure the better flow of the output liquid in the external transmission pipeline, the water jacket heater is the preferred heating equipment. Especially in winter, the water jacket heater is used more frequently, and it is necessary to increase the fire and increase the flame temperature, which creates a large temperature difference between the outside temperature and the chimney of the water jacket heater. The chimney produces a large amount of condensed water due to the intersection of the high temperature in the furnace and the low temperature outside. A large amount of condensed water flows down along the inner wall of the chimney to the bottom of the chimney and the position connected to the smoke outlet pipe, and flows from the connecting flange to the ground of the well site, which causes environmental pollution on the one hand, and on the other hand, a large amount of condensed water freezes and becomes muddy in the well site in winter, which brings troubles to daily production management. At the same time, the condensed water corrodes the inner wall of the chimney, shortens its service life, and increases production costs. The above problems need to be solved.

[0003] After searching, the following related patent technologies for treating chimney condensate water have appeared: Chinese patent application number CN202121815569.5 discloses a condensate discharge device for a steel chimney, including a chimney body, a flue and a water diversion mechanism; the water diversion mechanism includes a collecting trough, a fixed sleeve is fixedly sleeved on the outside of the collecting trough, the outer ring of the fixed sleeve is fixedly sleeved on the inner wall of the flue, an inclined groove is fixedly connected to the bottom of the collecting trough, and two ends of a sleeve rod are respectively fixedly connected to the two side walls inside the inclined groove, and two sliding sleeves are slidably sleeved on the sleeve rod, and the two sliding sleeves are rotatably connected to a rotating plate, and the other ends of the two rotating plates are respectively rotatably connected to the two ends of the bottom of the sleeve plate.

[0004] The utility model is simple to operate. The condensed water condensed on the top of the flue flows down through the guide groove arranged on the inclined plate and enters the fixed sleeve ring. The condensed water falls on the sleeve plate, driving the sleeve plate to be pressed downward. The condensed water falls through the inclined part of the sleeve plate and falls into the inclined groove. The condensed water flows out of the inclined groove through the opening arranged at the bottom of the inclined groove. The condensed water is discharged through the guide pipe, which can prevent the flue from corrosion.

[0005] A chimney condensate collection device disclosed in Chinese Patent Application No. CN201920642654.2 is installed in a spray reaction tower equipped with a demister. A chimney serving as a flue gas outlet is provided at the top of the spray reaction tower. An upwardly tapered section is provided in the part of the spray reaction tower above the demister. The collection device includes a first liquid collection tank and a first drain pipe. The first liquid collection tank is an upwardly open circular ring-shaped tank, which is arranged above the demister and directly below the top of the tapered section. A circular partition is provided in the first liquid collection tank, dividing the first liquid collection tank into a circular inner tank and an outer tank.

[0006] The above-mentioned utility model can collect the condensate generated during the upward movement of the flue gas in the chimney, reduce the secondary entrainment caused by the droplets generated by chimney condensation, significantly improve the droplet removal efficiency of the spray reaction tower, and improve the rain falling phenomenon outside the chimney.

[0007] Chinese Patent Application No. CN201620764838.2 provides a chimney condensate collection device, which can greatly reduce the discharge of condensate through the chimney and can collect these waste condensate wastewater. The device includes a water guide pipe and a water tank. One end of the water guide pipe is connected to the bottom of the chimney, and the other end of the water guide pipe is connected inside the water tank. The water tank is used to collect the condensate at the bottom of the chimney. An exhaust gas inlet pipe is also connected to the bottom of the chimney, and the exhaust gas inlet pipe discharges the exhaust gas through the chimney.

[0008] One end of the water guide pipe in the above-mentioned utility model is connected to the bottom of the chimney, and it can be widely applied to the field of chimney condensate collection.

[0009] In the prior art, although relevant condensate collection devices have been designed for chimneys, only the condensate flowing downward along the inner wall of the chimney can be collected, and a small amount of condensate generated by the chimney top cap will still drip to the bottom of the chimney through the smoke exhaust holes in the middle of the chimney, causing corrosion and damage to the chimney and flowing to the ground where the heating equipment is located. The chimney equipped with a condensate collection device still needs to be improved. Summary of the Utility Model

[0010] The utility model provides a chimney with recyclable condensate, which can collect the condensate of the chimney and the chimney top cap, and lead out all the condensate in the chimney. It can effectively protect the chimney from the corrosion and damage of condensate, extend the service life of the heating equipment using the chimney, facilitate the daily management and maintenance of the heating equipment, and reduce the production cost.

[0011] To achieve the above object, the utility model adopts the following technical solutions: A chimney with recoverable condensate is provided with a smoke outlet pipe and a chimney body, wherein: A condensate collector is connected between the smoke outlet pipe and the chimney body; A connecting pipe and a drain pipe are provided in the condensate collector, and a water collecting tank formed by the water collecting top of the flue gas passage and the inner wall of the connecting pipe communicates with the drain pipe in the connecting pipe; A guiding block is fixed in the connecting pipe above the water collecting top or in the chimney body; The outer diameter of the guiding block is larger than the inner diameter of the flue gas passage in the water collecting top, so that the condensate dripping from the top of the chimney body flows to the water collecting tank through the guiding block.

[0012] Preferably, the water collecting top is a tubular body welded in the connecting pipe, the lower pipe orifice of the water collecting top is larger than the upper pipe orifice as the flue gas passage, and the pipe wall between the lower pipe orifice and the upper flue gas passage is arc-shaped; The lower pipe orifice of the arc-shaped pipe wall of the water collecting top and the inner wall of the connecting pipe form a water collecting tank.

[0013] Preferably, the drain pipe communicates with a water tank inside a heating device using the chimney body through a pipeline.

[0014] Preferably, the drain pipe in the connecting pipe communicates with the bottom of the water collecting tank; A control valve is installed in the drain pipe outside the connecting pipe, and a filter screen is installed at the connection of the control valve and the outer drain pipe.

[0015] Preferably, the guiding block is provided with an upper cone, a lower cone and a supporting rod, the two upper cones and the lower cone are integrally arranged back to back, and the maximum outer diameter of the upper cone and the lower cone is larger than the inner diameter of the flue gas passage in the water collecting top; The supporting rod is welded between the maximum outer diameter of the guiding block and the inner wall of the connecting pipe.

[0016] Preferably, an exhaust fan is also installed in the flue gas passage of the water collecting top, the exhaust fan is provided with a circular fan body mounting frame, a fan body connecting shaft and a circular fan body provided with fan blades, the fan body mounting frame is fixed in the flue gas passage, and the circular fan body is installed in the fan body mounting frame and is connected with a condensate scraping plate in the water collecting tank through the fan body connecting shaft arranged in the central hole of the circular fan body.

[0017] Preferably, the fan body connecting shaft is a U-shaped rod-shaped body, one end of the fan body connecting shaft is fixedly connected with the central hole of the circular fan body, and the other end is fixedly connected with one end of the condensate scraping plate.

[0018] Preferably, the condensate scraping plate is in the shape of a right triangle, and the hypotenuse of the right triangle is an arc-shaped edge conforming to the arc-shaped pipe wall of the water collecting top; The condensate scraping plate is made of a high-temperature resistant rubber material.

[0019] Preferably, the diameter of the connecting pipe is consistent with the diameter of the chimney body, flange seats are arranged at both ends of the connecting pipe, and the connecting pipe is respectively flange-connected with the chimney body and the smoke outlet pipe through the flange seats at both ends.

[0020] Preferably, the chimney body includes an outer shell, an inner pipe, and a heat insulation layer between the outer shell and the inner pipe. The heat insulation layer is a silica-aluminum pipe, and the inner pipe is a 201 stainless steel pipe.

[0021] Compared with the prior art, the utility model has the following remarkable use effects: In the condensate water collector of the utility model, a water collecting top is provided. The upper pipe orifice of the water collecting top serves as a flue gas passage. The lower pipe orifice of the water collecting top is welded to the connecting pipe to form a water collecting tank. The pipe wall between the water collecting top and the connecting pipe is an arc-shaped pipe wall.

[0022] A circular fan installation frame is installed in the flue gas passage of the water collecting top. A circular fan is installed in the fan installation frame. A fan connecting shaft is connected and fixed in the central hole of the circular fan. When the flue gas moves upward, it does work on the fan blades, causing the fan blades to rotate and driving the fan connecting shaft to rotate, so that the condensate water scraper connected to the other end of the fan connecting shaft rotates along the water collecting tank. The condensate water scraper is made of a high-temperature resistant rubber material. The condensate water scraper is driven by the fan connecting shaft to move along the arc-shaped pipe wall of the water collecting top, so as to be able to drive the collected condensate water to quickly drain through the drain pipe, improving the drainage efficiency of the condensate water.

[0023] 3. A drain pipe is installed in the pipe wall of the connecting pipe and is communicated with the inside of the connecting pipe and corresponds to the lowest point position of the water collecting tank, which can ensure that no condensate water remains in the water collecting tank.

[0024] 4. A drain pipe is added and a control valve is installed in the drain pipe. The drain pipe can be communicated with the water tank inside the heating furnace through a pipeline. A filter screen is installed at the connection between the control valve in the drain pipe and the outer drain pipe, which can prevent impurities in the chimney body from flowing into the water tank along with the condensate water.

[0025] 5. The structure of the chimney body is improved, and a heat insulation layer is added between the outer shell and the inner pipe. A silica-aluminum pipe is selected as the heat insulation layer. Since the silica-aluminum pipe can withstand a temperature of up to 1000 °C and has good chemical stability, thermal stability, and low thermal conductivity, it can effectively reduce the formation of condensate water. The inner pipe uses a 201 stainless steel pipe, which has the characteristics of durability, cold resistance, corrosion resistance, heat resistance, etc., and can extend the service life of the chimney.

[0026] 6. By providing a condensate collector and a diversion block at the connection between the smoke outlet pipe and the chimney body, the utility model can effectively collect the dripping condensate and the condensate flowing down along the inner wall of the chimney body. When condensate forms inside the chimney body, the condensate collector will collect the condensate slipping down from the inner wall of the chimney. Through the connecting pipe above the water collecting top or the diversion block fixed inside the chimney body, it can prevent the condensate generated by the chimney top cap from dripping downward through the flue gas passage in the middle of the water collecting top. The flue gas is discharged upward through the flue gas passage in the water collecting top and moves upward in a wrapped state around the diversion block under the guidance of the lower cone of the diversion block; when the condensate generated by the chimney top cap drips downward, it will also flow into the water collecting tank of the water collecting top under the guidance of the upper cone of the diversion block, enabling all the condensate from the chimney body to be discharged and recycled through the drain pipe, effectively avoiding the condensate from dripping down along the connection between the chimney body and the smoke outlet pipe to the ground, avoiding environmental pollution caused by chimney dripping in the heating equipment, and facilitating the daily management of the heating equipment.

[0027] 7. By providing a drain pipe and transporting the collected condensate to the water tank of the heating furnace through the pipeline, the utility model realizes continuous automatic water addition to the heating furnace, reduces the water addition frequency of the heating furnace, reduces the labor intensity of workers and reduces the use of water tank trucks, thus reducing the production cost.

[0028] In summary, the utility model has remarkable usage effects. Description of the Drawings

[0029] The drawings are used to provide further understanding of the utility model, and constitute a part of the specification. They are used together with the embodiments of the utility model to explain the utility model, and do not constitute a limitation to the utility model. In the drawings:

[0030] Figure 1 is the external structure schematic diagram of the utility model; Figure 2 is the structure schematic diagram of the diversion block and the condensate collector in the utility model; Figure 3 is Figure 2 the structure schematic diagram of the water collecting top in Figure 4 is Figure 2 the structure schematic diagram of the exhaust fan installed in the water collecting top in Figure 5 is the partial cross-sectional view of the chimney body.

[0031] In the figures: base 1, heating furnace 2, smoke outlet pipe 3; chimney body 4, outer shell 41, heat insulation layer 42, inner pipe 43; condensate collector 5, flange seat 51, connecting pipe 52, water collecting top 53, drain pipe 54, fan body mounting frame 55, fan blade 56, fan body connecting shaft 57, condensate scraper 58; diversion block 6, upper cone 61, lower cone 62, support rod 63. Detailed Embodiments

[0032] The accompanying drawings are for reference and illustration purposes only and are not intended to limit the scope of protection of the present utility model. The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the scope of protection of the present utility model.

[0033] In order to make the objectives, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and are not used to limit the present utility model.

[0034] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present utility model. In addition, in the description of the present utility model, the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0035] See Figure 1 - Figure 5 , a condensate recoverable chimney, which is provided with a smoke outlet pipe 3 and a chimney body 4, wherein: a condensate collector 5 is connected between the smoke outlet pipe 3 and the chimney body 4; a connecting pipe 52 and a drain pipe 54 are provided in the condensate collector 5, and a water collecting tank formed by the inner wall of the connecting pipe 52 of the smoke passage and the drain pipe 54 in the connecting pipe 52 communicate; a guiding block 6 is fixed in the connecting pipe 52 above the water collecting top 53 or in the chimney body 4; the outer diameter of the guiding block 6 is larger than the inner diameter of the smoke passage in the water collecting top 53, so that the condensate dripping from the top of the chimney body 4 flows to the water collecting tank through the guiding block 6.

[0036] Above the condensate collector 5 provided in the present utility model, there is a diversion block 6. A water collecting top 53 is arranged in the connecting pipe 52. The diversion block 6 is fixed above the water collecting top 53. The flue gas passage in the water collecting top 53 is located below the diversion block 6. The high-temperature flue gas from the heating device rises through the flue gas passage in the water collecting top 53 to the top of the chimney body 4 and is discharged. Since the outer diameter of the diversion block 6 is larger than the inner diameter of the flue gas passage in the water collecting top 53, when the condensate water generated and dripping at the top cap of the chimney body 4 drops onto the diversion block 6, the condensate water dripping from the top of the chimney body 4 can flow through the diversion block 6 into the water collecting tank and be discharged through the drain pipe 54 to a specified container or device. The present utility model can completely discharge and recycle the condensate water generated and dripping from the chimney body 4 and its top cap through the drain pipe 54.

[0037] The condensate collector 5 in the present utility model is connected between the smoke outlet pipe 3 and the chimney body 4 and is located at the lower end of the chimney body 4. A diversion block 6 is fixed above the condensate collector 5. The water dripping from the chimney top cap and the condensate water in the chimney body 4 can be completely led out and recycled through the diversion block 6 and the condensate collector 5. The condensate water flowing down along the inner wall of the chimney body 4 and the water dripping from the chimney top cap will no longer flow into and drip into the smoke outlet pipe 3 and flow down through its connecting flange to the ground of the heating device using the chimney body 4. If the present utility model is used in the water jacket heating furnace of an oil well, the condensate water will not flow to the ground of the heating furnace 2 and around the base 1 of the heating furnace 2. It will not cause the ground of the well site to freeze and become muddy in winter, facilitating the daily management of the heating equipment at the well site and also facilitating the management and operation of the pumping equipment by the oil production workers, improving the safety of operation. At the same time, it can extend the service life of the chimney and reduce the production cost.

[0038] Similarly, when the present utility model is used in the heating furnace 2 in other places, by arranging a diversion block 6 and a condensate collector 5 at the connection between the smoke outlet pipe 3 and the chimney body 4, the dripping and the condensate water flowing down along the inner wall of the chimney body 4 can be effectively recycled. It can prevent the condensate water from falling on the ground through the connection of the chimney body 4 and avoid environmental pollution caused by the chimney body 4 of the heating furnace 2 dripping water.

[0039] Based on the above-mentioned Embodiment 1, the present utility model also has the following embodiments:

[0040] A preferred embodiment: See Figure 2 , the water collecting top 53 is a tubular body welded in the connecting pipe 52. The lower end pipe orifice of the water collecting top 53 is larger than the upper end pipe orifice serving as the flue gas passage, and the pipe wall between the lower end pipe orifice and the upper end flue gas passage is arc-shaped; the lower end pipe orifice of the arc-shaped pipe wall of the water collecting top 53 and the inner wall of the connecting pipe 52 form a water collecting tank.

[0041] Preferred embodiment: The drain pipe 54 is connected to the water tank inside the heating device using the chimney body 4 through a pipe. If the present utility model is used in the heating furnace 2 in an oil well site, it is connected to the water tank inside the heating furnace 2. The collected condensed water is transported through the pipe to the inside of the water tank of the heating furnace 2 by the provided drain pipe 54, enabling the heating furnace 2 to continuously and automatically add water, reducing the number of water addition times for the heating furnace 2 and facilitating the management of the heating furnace 2. The use of water tank trucks is reduced, which not only reduces the workload and labor intensity of workers but also lowers production costs.

[0042] Preferred embodiment: The drain pipe 54 in the connecting pipe 52 is connected to the bottom of the water collecting tank; a control valve is installed in the drain pipe 54 outside the connecting pipe 52, and a filter screen is installed at the connection between the control valve and the outer drain pipe 54. The filter screen can prevent impurities in the chimney body 4 from flowing into the water tank in the heating device along with the condensed water, polluting the heating water, and at the same time, it can also prevent the pipes connected to the drain pipe 54 from being blocked. The drain pipe 54 is installed in one side wall of the connecting pipe 52, communicating with the inside of the connecting pipe 52 and corresponding to the lowest point of the water collecting tank in the water collecting top 53, so that the condensed water in the water collecting tank can be discharged through the drain pipe 54 in a timely and thorough manner.

[0043] Preferred embodiment: See Figure 2 , the flow guiding block 6 is provided with an upper cone 61, a lower cone 62, and a support rod 63. The two upper cones 61 and the lower cone 62 are integrally provided back to back, and the maximum outer diameter of the upper cone 61 and the lower cone 62 is greater than the inner diameter of the flue gas passage in the water collecting top 53; the support rod 63 is welded between the maximum outer diameter of the flow guiding block 6 and the inner wall of the connecting pipe 52. By providing the flow guiding block 6, it can prevent the condensed water generated at the top of the chimney body 4 from dripping downward through the flue gas passage in the middle of the water collecting top 53. The flue gas in the heating furnace 2 is discharged upward through the flue gas passage of the water collecting top 53 and moves upward in a wrapped shape along the flow guiding block 6 under the guidance of the lower cone 62 of the flow guiding block 6. When the condensed water generated by the chimney cap at the top of the chimney body 4 drips downward, it will also flow into the water collecting tank formed by the water collecting top 53 and the connecting pipe 52 under the guidance of the upper cone 61 at the top of the flow guiding block 6.

[0044] Preferred embodiment: An exhaust fan is also installed in the flue gas passage of the water collection top 53. The exhaust fan is provided with a circular fan body mounting frame 55, a fan body connecting shaft 57, and a circular fan body with fan blades 56. The fan body mounting frame 55 is fixed in the flue gas passage. The circular fan body is installed in the fan body mounting frame 55 and is connected to the condensate scraper 58 in the water collection tank through the fan body connecting shaft 57 arranged in the central hole of the circular fan body. In the utility model, an exhaust fan without external power is installed in the flue gas passage. The circular fan body with fan blades 56 installed in the fan body mounting frame 55 is connected to the condensate scraper 58 in the water collection tank through the fan body connecting shaft 57. When the flue gas in the heating furnace 2 moves upward in the chimney body 4 and does work on the fan blades 56 to make the fan blades 56 rotate, the fan body connecting shaft 57 connected to the central hole of the circular fan body rotates, so that the condensate scraper 58 connected to the other end of the fan body connecting shaft 57 can follow the fan body connecting shaft 57 and rotate along the water collection tank, scraping the water in the water collection tank to the drain pipe 54, and accelerating the discharge speed of the condensate.

[0045] Preferred embodiment: The fan body connecting shaft 57 is a U-shaped rod. One end of the fan body connecting shaft 57 is fixedly connected to the central hole of the circular fan body, and the other end is fixedly connected to one end of the condensate scraper 58.

[0046] Preferred embodiment: The condensate scraper 58 is in the shape of a right triangle, and the hypotenuse of the right triangle is an arc edge that conforms to the arc-shaped tube wall of the water collection top 53. The condensate scraper 58 is made of high-temperature resistant rubber material. The shape of the condensate scraper 58 conforms to the arc-shaped tube wall of the water collection top 53, which is beneficial to sliding in the water collection tank and also beneficial to scraping and discharging the condensate.

[0047] Preferred embodiment: The diameter of the connecting pipe 52 conforms to the diameter of the chimney body 4. Flange seats 51 are arranged at both ends of the connecting pipe 52, and the connecting pipe 52 is respectively flange-connected to the chimney body 4 and the smoke outlet pipe 3 through the flange seats 51 at both ends.

[0048] Preferred embodiment: The chimney body 4 includes an outer shell 41, an inner pipe 43, and a heat insulation layer 42 between the outer shell 41 and the inner pipe 43. The heat insulation layer 42 is a silica-aluminum tube, and the inner pipe 43 is a 201 stainless steel pipe. The utility model improves the structure of the chimney body 4. Since the silica-aluminum tube can withstand a temperature of up to 1000°C and has good chemical stability, thermal stability, and low thermal conductivity, using it as the heat insulation layer 42 can reduce the temperature difference between the inside and outside of the chimney body 4 and reduce the formation of condensate. Then, a 201 stainless steel pipe is installed as the inner pipe 43 inside the heat insulation layer 42, so that the chimney body 4 in the utility model has the characteristics of durability, cold resistance, corrosion resistance, and heat resistance while reducing the formation of condensate.

[0049] The embodiments described above are only typical embodiments, but the present utility model is not limited to these embodiments, and those skilled in the art can make modifications without departing from the spirit and inspiration of 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 perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the creative spirit and creative concept of the present utility model shall be included within the protection scope of the present utility model. Therefore, the protection scope is not limited to the foregoing description.

Claims

1. A condensate recoverable chimney is provided with a smoke outlet pipe and a chimney body, characterized in that, The condensate collector is connected between the smoke outlet pipe and the chimney body; the condensate collector is provided with a connecting pipe and a drain pipe, and a water collecting tank formed by the water collecting top of the flue gas passage and the inner wall of the connecting pipe is communicated with the drain pipe in the connecting pipe; the flow guiding block is fixed in the connecting pipe above the water collecting top or in the chimney body; the outer diameter of the flow guiding block is larger than the inner diameter of the flue gas passage in the water collecting top, so that the condensate dripping from the top of the chimney body flows to the water collecting tank through the flow guiding block.

2. The condensing water recoverable chimney according to claim 1, wherein The water collecting top is a tubular body welded in the connecting pipe, the lower end pipe orifice of the water collecting top is larger than the upper end pipe orifice serving as the flue gas passage, and the pipe wall between the lower end pipe orifice and the upper end flue gas passage is arc-shaped; the lower end pipe orifice of the arc-shaped pipe wall of the water collecting top and the inner wall of the connecting pipe form a water collecting tank.

3. The condensing water recoverable chimney according to claim 1, characterized in that, The drain pipe is communicated with the water tank inside the heating device using the chimney body through a pipeline.

4. The condensing water recoverable chimney according to claim 2, wherein, The drain pipe in the connecting pipe is communicated with the bottom of the water collecting tank; a control valve is installed in the drain pipe located outside the connecting pipe, and a filter screen is installed at the connection of the control valve and the outer drain pipe.

5. The condensing water recoverable chimney according to claim 2, characterized in that, The flow guiding block is provided with an upper cone, a lower cone and a support rod, the two upper cones and the lower cone are integrally arranged back to back, and the maximum outer diameter of the upper cone and the lower cone is larger than the inner diameter of the flue gas passage in the water collecting top; the support rod is welded between the maximum outer diameter of the flow guiding block and the inner wall of the connecting pipe.

6. The condensate-recyclable chimney according to claim 4, characterized in that, An exhaust fan is further installed in the flue gas passage of the water collecting top, the exhaust fan is provided with a circular fan body installation frame, a fan body connecting shaft and a circular fan body provided with fan blades, the fan body installation frame is fixed in the flue gas passage, and the circular fan body is installed in the fan body installation frame and is connected with a condensate scraping plate in the water collecting tank through the fan body connecting shaft arranged in the central hole of the circular fan body.

7. The condensing water recoverable chimney according to claim 6, characterized in that, The fan body connecting shaft is a U-shaped rod-shaped body, one end of the fan body connecting shaft is fixedly connected with the central hole of the circular fan body, and the other end is fixedly connected with one end of the condensate scraping plate.

8. The condensate-recyclable chimney according to claim 6, characterized in that, The condensate scraping plate is in a right triangle, and the hypotenuse of the right triangle is an arc-shaped edge conforming to the arc-shaped pipe wall of the water collecting top; the condensate scraping plate is made of a high-temperature resistant rubber material.

9. The condensate-recyclable chimney according to claim 4, characterized in that, The diameter of the connecting pipe conforms to the diameter of the chimney body, flange seats are arranged at both ends of the connecting pipe, and the connecting pipe is respectively flange-connected with the chimney body and the smoke outlet pipe through the flange seats at both ends.

10. A condensate-recyclable chimney according to claim 9, characterized in that, The chimney body includes an outer shell, an inner pipe and a heat insulation layer between the outer shell and the inner pipe, the heat insulation layer is a silica-aluminum pipe, and the inner pipe is a 201 stainless steel pipe.

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