Vacuum hot water boiler flue gas collecting device with waste heat recycling function

Abstract

This utility model relates to the field of flue gas collection technology, specifically a flue gas collection device for a vacuum hot water boiler with waste heat recovery function. It includes a base, a reaction vessel mounted on top of the base, a flue gas inlet assembly mounted on the bottom of the reaction vessel, a flue gas extraction assembly mounted on top of the reaction vessel, liquid inlet / outlet assemblies mounted on both the top and bottom sides of the reaction vessel, a staged cooling assembly installed inside the reaction vessel, one side of the reaction vessel fixedly connected to one side of a support column, and the bottom of the support column movably overlapping the top of the base. The improved vacuum hot water boiler flue gas collection device can efficiently recover waste heat from the flue gas. By staged rerouting of the flue and installing heat sinks on the outside of the flue, heat dissipation efficiency is improved, and water ingress into the flue is prevented. This ensures the safety of the vacuum hot water boiler flue gas collection device while recovering waste heat.

Description

Technical Field

[0001] This utility model relates to the field of flue gas collection technology, specifically to a flue gas collection device for a vacuum hot water boiler with waste heat recovery function. Background Technology

[0002] Currently, most vacuum hot water boilers use clean energy sources such as oil or gas as fuel. However, boilers using oil or gas have a fast combustion speed and release heat rapidly, resulting in a large amount of heat being discharged from the chimney in the flue gas, leading to energy waste. To recover and utilize the heat from the flue gas, metal pipes are often coiled inside the flue gas duct. These metal pipes act as water passages, absorbing heat from the flue gas duct to heat the cold water within, thus achieving the purpose of waste heat utilization.

[0003] During the design process of this utility model, the following problems were discovered in the existing technology:

[0004] Since the water flows under pressure inside the metal pipes, if the metal pipes are corroded and ruptured by flue gas, the water inside the pipes will flow directly into the flue, which can easily cause equipment to shut down and other malfunctions, posing a high safety hazard. Utility Model Content

[0005] The purpose of this invention is to provide a vacuum hot water boiler flue gas collection device with waste heat recovery function to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a vacuum hot water boiler flue gas collection device with waste heat recovery function, including a base, a reaction vessel installed on the top of the base, a flue gas inlet assembly installed on the bottom of the reaction vessel, liquid inlet and outlet assemblies installed on both the top and bottom sides of the reaction vessel, a staged cooling assembly installed inside the reaction vessel, a flue gas extraction assembly installed on the top of the reaction vessel, a side of the reaction vessel fixedly connected to a side of a support column, and the bottom of the support column movably overlapping the top of the base;

[0007] The graded cooling assembly includes a main cooling pipe, the top of which is fixedly connected to the bottom of the main graded pipe, both ends of which are fixedly connected to one end of a secondary cooling pipe, the other end of which is fixedly connected to one end of a gas collecting graded pipe, the top of which is fixedly connected to the bottom of the main gas collecting pipe, and the outer wall of the secondary cooling pipe is movably sleeved with the inner wall of the heat sink.

[0008] More preferably, the smoke inlet assembly includes a smoke inlet pipe, one end of which passes through the bottom of the reactor and is fixedly connected to the bottom of the main cooling pipe, and the other end of the smoke inlet pipe is equipped with a smoke inlet valve.

[0009] More preferably, the reactor has a hollow cavity structure, and the vertical central axes of the reactor, the flue gas inlet pipe, and the main classifier pipe are aligned.

[0010] More preferably, the liquid inlet / outlet assembly includes a liquid inlet pipe, one end of which passes through one side of the reactor to the interior, and the other end of which is equipped with a liquid inlet pump. A liquid outlet pipe is installed on one side of the bottom of the reactor, and one end of which is equipped with a liquid outlet pump.

[0011] More preferably, the fume extraction assembly includes a fume extraction pipe, one end of which is fixedly connected to the top of the reactor, and the other end of which is equipped with a fume extraction valve.

[0012] More preferably, the vertical center lines of the exhaust pipe, the main gas collecting pipe, and the reactor are aligned, and there are several support columns, with the multiple support columns distributed in a ring about the horizontal center point of the reactor.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] By installing a multi-stage cooling assembly with heat sinks inside the reactor, the high-temperature flue gas in the flue is cooled to the dew point by the coolant inside the reactor. This allows for sufficient cooling of the flue gas, and the heated coolant is discharged and then pumped in new coolant. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0016] Figure 2 This is a front view full sectional structural diagram of the present invention;

[0017] Figure 3 This is a schematic diagram of the main structure of the reaction vessel of this utility model;

[0018] Figure 4 This is a schematic diagram of the graded cooling assembly structure of this utility model.

[0019] In the diagram: 1. Base; 2. Reactor; 3. Smoke inlet assembly; 301. Smoke inlet pipe; 302. Smoke inlet valve; 4. Liquid inlet / outlet assembly; 401. Liquid inlet pipe; 402. Liquid inlet pump; 403. Liquid outlet pipe; 404. Liquid outlet pump; 5. Staged cooling assembly; 501. Main cooling pipe; 502. Main staged pipe; 503. Secondary cooling pipe; 504. Gas collecting staged pipe; 505. Main gas collecting pipe; 506. Heat sink; 6. Smoke extraction assembly; 601. Smoke exhaust pipe; 602. Smoke exhaust valve; 7. Support column. Detailed Implementation

[0020] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0021] Please see Figures 1 to 4 This utility model provides a technical solution: a vacuum hot water boiler flue gas collection device with waste heat reuse function, including a base 1, a reaction vessel 2 installed on the top of the base 1, a smoke inlet assembly 3 installed on the bottom of the reaction vessel 2, liquid inlet and outlet assemblies 4 installed on both the top and bottom sides of the reaction vessel 2, a staged cooling assembly 5 installed inside the reaction vessel 2, a smoke extraction assembly 6 installed on the top of the reaction vessel 2, a side of the reaction vessel 2 fixedly connected to a side of a support column 7, and the bottom of the support column 7 movably overlapping the top of the base 1;

[0022] The graded cooling assembly 5 includes a main cooling pipe 501, the top of which is fixedly connected to the bottom of a main graded pipe 502, both ends of which are fixedly connected to one end of a secondary cooling pipe 503, the other end of which is fixedly connected to one end of a gas collecting graded pipe 504, the top of which is fixedly connected to the bottom of a main gas collecting pipe 505, and the outer wall of the secondary cooling pipe 503 is movably sleeved with the inner wall of a heat sink 506.

[0023] In this embodiment, as Figure 3 As shown, the smoke inlet assembly 3 includes a smoke inlet pipe 301, one end of which passes through the bottom of the reactor 2 and is fixedly connected to the bottom of the main cooling pipe 501. The other end of the smoke inlet pipe 301 is equipped with a smoke inlet valve 302.

[0024] In this embodiment, as Figure 2 As shown, the reactor 2 has a hollow cavity structure, and the vertical central axes of the reactor 2, the flue gas inlet pipe 301, and the main grading pipe 502 are aligned.

[0025] In this embodiment, as Figure 3 As shown, the liquid inlet / outlet assembly 4 includes a liquid inlet pipe 401, one end of which passes through one side of the reactor 2 to the interior, and a liquid inlet pump 402 is installed at the other end of the liquid inlet pipe 401. A liquid outlet pipe 403 is installed on one side of the bottom of the reactor 2, and a liquid outlet pump 404 is installed at one end of the liquid outlet pipe 403.

[0026] In this embodiment, as Figure 3 As shown, the smoke extraction assembly 6 includes a smoke exhaust pipe 601, one end of which is fixedly connected to the top of the reactor 2, and the other end of which is equipped with a smoke exhaust valve 602.

[0027] In this embodiment, as Figure 2 and Figure 3 As shown, the vertical center lines of the exhaust pipe 601, the main gas collecting pipe 505, and the reactor 2 are aligned, and there are several support columns 7, which are distributed in a ring about the horizontal center point of the reactor 2.

[0028] like Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, the working process of this vacuum hot water boiler flue gas collection device with waste heat recovery function is as follows:

[0029] First, the reactor 2 is fixedly supported by multiple support columns 7. The inlet valve 302 is opened to send high-temperature flue gas into the main cooling pipe 501 through the inlet pipe 301. The coolant is sent into the reactor 2 through the inlet pipe 401 by the liquid pump 402. The high-temperature flue gas in the main cooling pipe 501 enters multiple secondary cooling pipes 503 through the main classifier pipe 502. Each of the secondary cooling pipes 503 is equipped with heat sinks 506, which allows for sufficient heat exchange between the flue gas and the secondary cooling pipes 503. The heat of the flue gas is transferred to the coolant inside the reactor 2, cooling the flue gas to the dew point. The coolant is then sent out of the reactor 2 through the outlet pipe 403 by the outlet pump 404 and used for other purposes. The cooled flue gas is then collected again into the main gas collecting pipe 505 through the gas collecting classifier pipe 504. The exhaust valve 602 is activated to send the cooled flue gas out of the reactor 2 through the exhaust pipe 601.

[0030] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0031] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A flue gas collecting device for a vacuum water heater with waste heat recycling function, comprising a base (1), characterized in that: The base (1) is equipped with a reactor (2) on top, a smoke inlet assembly (3) is installed at the bottom of the reactor (2), a liquid inlet assembly (4) is installed on both the top and bottom sides of the reactor (2), a staged cooling assembly (5) is installed inside the reactor (2), a smoke extraction assembly (6) is installed on the top of the reactor (2), one side of the reactor (2) is fixedly connected to one side of the support column (7), and the bottom of the support column (7) is movably connected to the top of the base (1). The graded cooling assembly (5) includes a main cooling pipe (501), the top of which is fixedly connected to the bottom of a main graded pipe (502), both ends of which are fixedly connected to one end of a secondary cooling pipe (503), the other end of which is fixedly connected to one end of a gas collecting graded pipe (504), the top of which is fixedly connected to the bottom of a main gas collecting pipe (505), and the outer wall of the secondary cooling pipe (503) is movably sleeved with the inner wall of a heat sink (506).

2. The vacuum hot-water boiler flue gas collecting device with waste heat recycling function according to claim 1, characterized in that: The smoke inlet assembly (3) includes a smoke inlet pipe (301), and one end of the smoke inlet pipe (301) passes through the bottom of the reactor (2) and is fixedly connected to the bottom of the main cooling pipe (501). The other end of the smoke inlet pipe (301) is equipped with a smoke inlet valve (302).

3. The vacuum hot-water boiler flue gas collecting device with waste heat recycling function according to claim 1, characterized in that: The reactor (2) is a hollow cavity structure, and the vertical central axes of the reactor (2), the flue gas inlet pipe (301) and the main grading pipe (502) are aligned.

4. The vacuum hot-water boiler flue gas collecting device with waste heat recycling function according to claim 1, characterized in that: The liquid inlet / outlet assembly (4) includes a liquid inlet pipe (401), one end of which passes through one side of the reactor (2) to the interior, and the other end of which is equipped with a liquid inlet pump (402). A liquid outlet pipe (403) is installed on one side of the bottom of the reactor (2), and one end of which is equipped with a liquid outlet pump (404).

5. The vacuum hot-water boiler flue gas collecting device with waste heat recycling function according to claim 1, characterized in that: The smoke extraction assembly (6) includes a smoke exhaust pipe (601), one end of which is fixedly connected to the top of the reactor (2), and the other end of which is equipped with a smoke exhaust valve (602).

6. The vacuum hot-water boiler flue gas collecting device with waste heat recycling function according to claim 5, characterized in that: The vertical center lines of the exhaust pipe (601), the main gas collecting pipe (505) and the reactor (2) are aligned, and there are several support columns (7), with multiple support columns (7) distributed in a ring about the horizontal center point of the reactor (2).

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