Vertical waste heat conduction oil furnace

Abstract

A furnace body is supported by a support, a support is arranged on the top of the furnace body, a vertical furnace body is installed on the support, a heat preservation layer is covered outside the vertical furnace body, and an inner heat exchange cavity and an annular heat exchange cavity are designed inside the vertical waste heat conduction oil furnace. The annular heat exchange cavity is divided into a plurality of hot air cavities distributed circumferentially, one hot air cavity is connected into a heat source through a hot air connecting pipe, the adjacent hot air cavities are connected through air guiding openings, and it is guaranteed that hot air is evenly distributed. Hot air enters the inner heat exchange cavity through the air inlet and is matched with the spiral guide vane arranged in the inner heat exchange cavity, the hot air is guided to spirally flow downwards, and sufficient heat exchange with cold oil in the inner heat absorption oil pipe is achieved. Meanwhile, the outer heat absorption oil pipe penetrates through the hot air cavities. The condensate water collection system is specially designed and is connected with the drainage pipe through the water accumulation channel and the flow guide channel, and a hand wheel can be manually operated to control drainage of condensate water. By means of the design, the recycling rate of heat energy is increased, and the problem of condensate water treatment in the operation process of the waste heat conduction oil furnace is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of thermal oil furnaces and relates to a vertical waste heat thermal oil furnace. Background Art

[0002] As improving energy efficiency in industrial production processes becomes a global concern, effectively utilizing the various waste heat resources generated during production has become a key issue in industrial energy conservation. Among the many waste heat recovery technologies, waste heat thermal oil boilers, as a highly efficient and safe waste heat recovery device, have been widely used and developed in recent years.

[0003] Traditionally, heat energy, such as high-temperature flue gas or steam, generated during industrial production is often directly discharged into the environment, resulting in not only energy waste but also increased thermal pollution. To address this issue, waste heat thermal oil boilers have emerged. They convert this otherwise wasted heat into a reusable form—thermal oil heat—which can then be used for various industrial heating needs, such as heating process media and drying materials, effectively recovering and reusing energy.

[0004] A waste heat thermal oil boiler primarily consists of a heat source interface, a heat exchanger, a circulation pump, and a control system. The heat exchanger is the core component of the entire system, responsible for transferring heat from the heat source (such as combustion exhaust or steam) to the thermal oil. This equipment not only significantly improves energy utilization and reduces energy consumption, but also lowers operating costs for businesses, resulting in significant economic and social benefits.

[0005] However, in actual applications, whether using combustion exhaust or steam as the heat source, a certain amount of condensate is generated during the heat release process. If this condensate is not promptly treated, it may affect the normal operation of the system, such as causing pipeline corrosion and reducing heat exchange efficiency, and it also leads to the waste of precious water resources. Utility Model Content

[0006] The purpose of the utility model is to provide a vertical waste heat thermal oil boiler, which can centrally collect and discharge the generated condensed water to avoid affecting the normal operation of the system and enable the condensed water to be effectively utilized.

[0007] In order to solve the above technical problems, the utility model provides a vertical waste heat thermal oil furnace, comprising a bracket, a support is provided at the upper end of the bracket, and a vertical furnace body is provided at the upper end of the support, the vertical furnace body is divided into an inner heat exchange chamber located on the inner side and an annular heat exchange chamber located on the outer side, the vertical furnace body is connected to a smoke exhaust pipe connected to the inner heat exchange chamber, the annular heat exchange chamber is divided into a plurality of hot gas chambers distributed in a circumferential manner, a hot gas connecting pipe connected to one of the hot gas chambers is provided outwardly on the outer side of the vertical furnace body, an air inlet connected to the inner heat exchange chamber is provided on the upper part of one of the hot gas chambers, the hot gas chamber with the air inlet is adjacent to the hot gas chamber connected to the hot gas connecting pipe, and the adjacent hot gas chambers are connected through air guide ports staggered up and down;

[0008] The vertical furnace body is connected to an oil outlet pipe extending into the hot gas cavity connected to the hot gas connecting pipe, the outer end of the oil outlet pipe is connected to a hot oil pipe, the oil outlet pipe is connected to a plurality of external heat-absorbing oil pipes, each of which is bent up and down in sequence, passes through each air guide port and extends into each hot gas cavity, the free end of each external heat-absorbing oil pipe passes through the air inlet and is connected to an internal heat-absorbing oil pipe extending into the internal heat exchange cavity, the vertical furnace body is connected to an oil inlet pipe extending into the bottom of the internal heat exchange cavity, the free end of each internal heat-absorbing oil pipe is connected to the oil inlet pipe, the outer end of the oil inlet pipe is connected to an oil storage tank, and also includes a circulating pump, the inlet end of the circulating pump is connected to the oil storage tank, and the outlet end of the circulating pump is connected to a cold oil pipe;

[0009] The bottom of the support is upwardly provided with a water accumulation channel connected to the inner heat exchange chamber, and each hot gas chamber is provided with a diversion channel connected to the water accumulation channel. The bottom of the support is downwardly provided with a drain pipe connected to the water accumulation channel, and the inner wall of the drain pipe is provided with an internal thread, and the drain pipe is threadedly connected to a threaded shaft, the upper end of the threaded shaft is provided with a blocking shaft capable of blocking each diversion channel, and the lower end of the threaded shaft is connected to a handwheel.

[0010] By adopting the above technical solution, cold oil is pumped from the cold oil pipe into the oil storage tank through the circulation pump, and the cold oil in the oil storage tank is squeezed into the oil inlet pipe. The cold oil in the oil inlet pipe absorbs heat in the inner heat exchange chamber along the inner heat absorption oil pipe, and then enters the outer heat absorption oil pipe, and absorbs heat in the hot gas chamber in turn, gradually increasing the temperature of the oil until it becomes hot oil and is discharged through the hot oil pipe to meet industrial heating needs. After heating, the hot oil becomes cold oil and circulates to the oil storage tank through the cold oil pipe;

[0011] The heat source enters the hot gas cavity from the hot gas connecting pipe, flows through the air guide port in multiple hot gas cavities, transfers heat to the external heat absorbing oil pipe, then enters the inner heat exchange cavity through the air inlet, flows continuously downward in the inner heat exchange cavity, transfers heat to the inner heat absorbing oil pipe, until it reaches the bottom of the inner heat exchange cavity, and is discharged to the outside through the exhaust channel and exhaust pipe;

[0012] During the process, the hotter hot gas in the hot gas cavity continuously heats the preheated oil in the external heat absorption oil pipe, allowing it to absorb more heat. In the internal heat exchange cavity, the cooled hot gas preheats the cold oil in the internal heat absorption oil pipe, allowing the oil in the pipe to gradually heat up and absorb more heat.

[0013] During the heat exchange process, a small amount of condensed water will be produced in the hot gas cavity, while a large amount of condensed water will be produced in the inner heat exchange cavity. By turning the hand wheel and removing the threaded shaft and the plugging shaft, the condensed water in the inner heat exchange cavity and the hot gas cavity can be drained away.

[0014] The utility model is further configured such that the outer wall of the vertical furnace body is provided with a heat-insulating layer.

[0015] The present invention is further configured such that the inner heat absorbing oil pipe is spirally downwardly connected to the oil inlet pipe in the inner heat exchange cavity.

[0016] The present invention is further configured such that spiral guide blades matching the inner heat-absorbing oil pipe are provided in the inner heat exchange cavity.

[0017] The utility model is further configured such that a smoke exhaust channel is provided in the middle of the inner heat exchange chamber, a gap is left between the lower end of the smoke exhaust channel and the bottom of the inner heat exchange chamber, the smoke exhaust pipe is connected to the upper end of the smoke exhaust channel, and the spiral guide blades are provided between the inner wall of the inner heat exchange chamber and the outer wall of the smoke exhaust channel.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] First, the utility model is provided with a water accumulation channel and a diversion channel in the support, which are connected with the internal heat exchange chamber and the hot gas chamber. The condensed water generated is collected through the water accumulation channel and the diversion channel. After the drain pipe is opened, the condensed water can be drained away, avoiding affecting the normal operation of the system and allowing the condensed water to be effectively utilized.

[0020] Secondly, the utility model sets the direction of cold oil inlet and the direction of hot air inlet in opposite directions, so that the hot air heats the hotter hot oil, and the relatively cold hot air preheats the cold oil just entering, so that the oil in the pipe can be heated step by step and absorb more heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1It is a schematic diagram of the overall structure of the utility model;

[0022] Figure 2 It is a partial cross-sectional view of the utility model;

[0023] Figure 3 It is a partial cross-sectional view of the vertical furnace body;

[0024] Figure 4 Used to demonstrate the connection between the outer heat absorbing oil pipe and the inner heat absorbing oil pipe;

[0025] Figure 5 It is a cross-sectional view used to show the internal structure of the support and vertical furnace body.

[0026] Among them, 1. bracket; 2. support; 3. vertical furnace body; 4. insulation layer; 5. hot gas cavity; 6. hot gas connecting pipe; 7. air inlet; 8. air guide port; 9. oil outlet pipe; 10. hot oil pipe; 11. external heat absorption oil pipe; 12. smoke exhaust channel; 13. smoke exhaust pipe; 14. spiral guide vane; 15. internal heat absorption oil pipe; 16. oil inlet pipe; 17. oil storage tank; 18. circulation pump; 19. cold oil pipe; 20. water accumulation channel; 21. diversion channel; 22. drain pipe; 23. threaded shaft; 24. plugging shaft; 25. handwheel. DETAILED DESCRIPTION

[0027] The following is a detailed description of the vertical waste heat thermal oil boiler proposed by the present invention, combined with the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are highly simplified and not to exact scale, and are intended solely to facilitate and clearly illustrate the embodiments of the present invention. Identical or similar reference numerals in the drawings represent identical or similar components.

[0028] Example, see Figure 1-5 A vertical waste heat thermal oil furnace includes a bracket 1, a support 2 is provided at the upper end of the bracket 1, a vertical furnace body 3 is provided at the upper end of the support 2, and an insulation layer 4 is provided on the outer wall of the vertical furnace body 3. The vertical furnace body 3 is divided into an inner heat exchange chamber located on the inner side and a circle of annular heat exchange chamber located on the outer side. The annular heat exchange chamber is divided into six circumferentially distributed hot gas chambers 5. A hot gas connecting pipe 6 connected to one of the hot gas chambers 5 is provided outwardly on the outer side of the vertical furnace body 3 for connecting to a heat source. An air inlet 7 connected to the inner heat exchange chamber is opened on the upper part of one of the hot gas chambers 5. The hot gas chamber 5 with the air inlet 7 is adjacent to the hot gas chamber 5 connected to the hot gas connecting pipe 6, and the adjacent hot gas chambers 5 are connected through air guide ports 8 staggered up and down.

[0029] The vertical furnace body 3 is connected to an oil outlet pipe 9 that extends into the hot gas cavity 5 connected to the hot gas connecting pipe 6. The outer end of the oil outlet pipe 9 is connected to a hot oil pipe 10. The hot oil pipe 10 is connected to the outside and is used to provide a heating function. The oil outlet pipe 9 is connected to three external heat-absorbing oil pipes 11. Each external heat-absorbing oil pipe 11 is bent up and down in sequence, passes through each air guide port 8 and extends into each hot gas cavity 5. A smoke exhaust channel 12 is provided in the middle of the inner heat exchange chamber, and a gap is left between the lower end of the smoke exhaust channel 12 and the bottom of the inner heat exchange chamber. A smoke exhaust pipe 13 connected to the smoke exhaust channel 12 is provided at the upper end of the vertical furnace body 3. A spiral guide blade 14 is provided between the inner wall of the inner heat exchange chamber and the outer wall of the smoke exhaust channel 12, which can make the airflow flow downward in a spiral. Three inner heat absorption oil pipes 15 are provided in the inner heat exchange chamber, which are spirally downward in cooperation with the spiral guide blades 14 and correspond one-to-one to the outer heat absorption oil pipes 11. The free end of each outer heat absorption oil pipe 11 passes through the air inlet 7 and is connected to the corresponding inner heat absorption oil pipe 15. The vertical furnace body 3 is connected to an oil inlet pipe 16 extending into the bottom of the inner heat exchange chamber, and the free end of each inner heat absorption oil pipe 15 is connected to the oil inlet pipe 16. The outer end of the oil inlet pipe 16 is connected to an oil storage tank 17, and also includes a circulation pump 18. The inlet end of the circulation pump 18 is connected to the oil storage tank 17, and the outlet end of the circulation pump 18 is connected to a cold oil pipe 19 for connecting the circulating cold oil.

[0030] A water accumulation channel 20 communicating with the inner heat exchange chamber is provided upward at the bottom of the support 2, and a guide channel 21 communicating with the water accumulation channel 20 is provided in each hot gas chamber 5. A drain pipe 22 communicating with the water accumulation channel 20 is provided downward at the bottom of the support 2, and the inner wall of the drain pipe 22 is provided with an internal thread, and the drain pipe 22 is threadedly connected to a threaded shaft 23, and the upper end of the threaded shaft 23 is provided with a blocking shaft 24 capable of blocking each guide channel 21, and the lower end of the threaded shaft 23 is connected to a handwheel 25. By removing the threaded shaft 23 and the blocking shaft 24, the condensed water in the inner heat exchange chamber and the hot gas chamber 5 can be drained away, and a water collecting tank is provided below the drain pipe 22, or a drainage ditch is excavated to collect condensed water.

[0031] Working principle: cold oil is pumped from the cold oil pipe 19 into the oil storage tank 17 through the circulation pump 18, and the cold oil in the oil storage tank 17 is squeezed into the oil inlet pipe 16. The cold oil in the oil inlet pipe 16 absorbs heat in the inner heat exchange chamber along the inner heat absorption oil pipe 15, and then enters the outer heat absorption oil pipe 11, and absorbs heat in the hot gas chamber 5 in turn, gradually increasing the temperature of the oil until it becomes hot oil and is discharged through the hot oil pipe 10 to meet industrial heating needs. After heating, the hot oil becomes cold oil and circulates to the oil storage tank 17 through the cold oil pipe 19;

[0032] The heat source enters the hot gas cavity 5 from the hot gas connecting pipe 6, flows through the multiple hot gas cavities 5 through the air guide port 8, transfers heat to the external heat absorption oil pipe 11, then enters the internal heat exchange cavity through the air inlet 7, flows continuously downward along the spiral guide vanes 14 in the internal heat exchange cavity, transfers heat to the internal heat absorption oil pipe 15, until it reaches the bottom of the internal heat exchange cavity, and is discharged to the outside through the exhaust channel 12 and the exhaust pipe 13;

[0033] During the process, the hotter hot gas in the hot gas chamber 5 continuously heats the preheated oil in the external heat absorption oil pipe 11, allowing it to absorb more heat. In the internal heat exchange chamber, the cooled hot gas preheats the cold oil in the internal heat absorption oil pipe 15, allowing the oil in the pipe to gradually increase in temperature and absorb more heat.

[0034] During the heat exchange process, a small amount of condensed water will be generated in the hot gas chamber 5, while a large amount of condensed water will be generated in the inner heat exchange chamber. By turning the hand wheel 25 and removing the threaded shaft 23 and the blocking shaft 24, the condensed water in the inner heat exchange chamber and the hot gas chamber 5 can be drained away.

[0035] It should be noted that the various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referenced to each other.

[0036] The above description is only a description of the preferred embodiment of the present invention and does not limit the scope of the present invention. Any changes and modifications made by ordinary technicians in the field of the present invention based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A vertical waste heat thermal oil furnace, comprising a bracket (1), a support (2) provided at the upper end of the bracket (1), a vertical furnace body (3) provided at the upper end of the support (2), characterized in that: The vertical furnace body (3) is divided into an inner heat exchange chamber located on the inner side and an annular heat exchange chamber located on the outer side. The vertical furnace body (3) is connected to a smoke exhaust pipe (13) in communication with the inner heat exchange chamber. The annular heat exchange chamber is divided into a plurality of hot air chambers (5) distributed in a circumferential manner. A hot air connection pipe (6) in communication with one of the hot air chambers (5) is provided outwardly from the outer side of the vertical furnace body (3). An air inlet (7) in communication with the inner heat exchange chamber is provided on the upper part of one of the hot air chambers (5). The hot air chamber (5) in which the air inlet (7) is provided is adjacent to the hot air chamber (5) in communication with the hot air connection pipe (6). The adjacent hot air chambers (5) are connected through air guide ports (8) arranged in an upper and lower staggered manner. The vertical furnace body (3) is connected to an oil outlet pipe (9) extending into a hot gas cavity (5) connected to the hot gas connecting pipe (6), the outer end of the oil outlet pipe (9) is connected to a hot oil pipe (10), and the oil outlet pipe (9) is connected to a plurality of external heat-absorbing oil pipes (11), each of which is bent up and down in sequence and passes through each air guide port (8) and extends into each hot gas cavity (5), and the free end of each external heat-absorbing oil pipe (11) passes through the air inlet (7) and is connected to the hot oil pipe (10) extending into the hot gas cavity (5). The internal heat-absorbing oil pipe (15) in the internal heat exchange chamber, the vertical furnace body (3) is connected to an oil inlet pipe (16) extending into the bottom of the internal heat exchange chamber, the free end of each internal heat-absorbing oil pipe (15) is connected to the oil inlet pipe (16), the outer end of the oil inlet pipe (16) is connected to an oil storage tank (17), and also includes a circulating pump (18), the inlet end of the circulating pump (18) is connected to the oil storage tank (17), and the outlet end of the circulating pump (18) is connected to a cold oil pipe (19); The bottom of the support (2) is provided with a water accumulation channel (20) communicating with the inner heat exchange chamber, and each hot air chamber (5) is provided with a guide channel (21) communicating with the water accumulation channel (20). The bottom of the support (2) is provided with a drain pipe (22) communicating with the water accumulation channel (20), and the inner wall of the drain pipe (22) is provided with an internal thread. The drain pipe (22) is threadedly connected to a threaded shaft (23), and the upper end of the threaded shaft (23) is provided with a hole blocking shaft (24) capable of blocking each guide channel (21), and the lower end of the threaded shaft (23) is connected to a hand wheel (25).

2. A vertical waste heat thermal oil furnace according to claim 1, characterized in that: The outer wall of the vertical furnace body (3) is provided with a heat-insulating layer (4).

3. A vertical waste heat thermal oil furnace according to claim 1, characterized in that: The inner heat absorbing oil pipe (15) is spirally downwardly connected to the oil inlet pipe (16) in the inner heat exchange chamber.

4. A vertical waste heat thermal oil furnace according to claim 3, characterized in that: The inner heat exchange cavity is provided with a spiral guide blade (14) which matches the inner heat absorbing oil pipe (15).

5. A vertical waste heat thermal oil furnace according to claim 4, characterized in that: A smoke exhaust channel (12) is provided in the middle of the inner heat exchange chamber, a gap is left between the lower end of the smoke exhaust channel (12) and the bottom of the inner heat exchange chamber, the smoke exhaust pipe (13) is connected to the upper end of the smoke exhaust channel (12), and the spiral guide blade (14) is provided between the inner wall of the inner heat exchange chamber and the outer wall of the smoke exhaust channel (12).

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