Continuous discharge waste heat circulation system

Abstract

The utility model discloses a continuous discharge waste heat circulation system which comprises an exchanger, a water inlet connector, a water outlet connector, an air inlet pipe and a liquid discharge pipe which are communicated with the inside of the exchanger are arranged on the exchanger, a spiral pipe is fixedly arranged in the exchanger, one end of the spiral pipe is communicated with the water inlet connector, and the other end of the spiral pipe is communicated with the water outlet connector. A plurality of upper flow guide plates and lower flow guide plates are fixedly arranged on the top wall and the bottom wall in the exchanger correspondingly and used for enabling gas to flow back and forth in the exchanger, the upper flow guide plates and the lower flow guide plates are obliquely arranged, and the inclination directions of the upper flow guide plates and the lower flow guide plates are opposite; the lower flow guide plate is provided with a water flowing hole allowing condensate water to pass through. Due to the fact that the inclination directions of the upper flow guide plate and the lower flow guide plate are opposite, the flow speed of the gas is reduced, the gas is made to make full contact with the upper flow guide plate, the lower flow guide plate and the spiral pipe in the return flowing process, condensation of the gas is accelerated, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of continuous waste heat, in particular to a continuous waste heat circulation system. Background Art

[0002] Continuous heat recovery refers to waste heat recovered through a cascade system. This waste heat can be used to generate steam in a waste heat boiler, driving a steam turbine to generate mechanical work or electricity. It can also be used for heating or hot water production. To fully utilize this waste heat and prevent waste, a cascade waste heat circulation system is required.

[0003] Chinese patent publication CN214065809U discloses a boiler heat recovery device with a fixed row, comprising a front head, a tank body, and a rear head, the front head, the tank body, and the rear head being connected in sequence. A baffle is provided on the front head along its horizontal central axis, dividing the front head into an outlet side and an inlet side. A desalted water inlet is provided on the inlet-side front head, and a desalted water outlet is provided on the outlet-side front head. The tank body is provided with an exhaust gas inlet and a condensed water outlet, the exhaust gas inlet being on one side of the desalted water outlet, and the condensed water outlet being on the other side of the desalted water inlet. A tube bundle is provided within the tank body, and baffles are equidistantly provided on the upper and lower inner walls of the tank body. The vertical length of the baffles is less than the diameter of the tank body, enabling the exhaust gas to flow in a reverse direction. The baffles are provided with baffle holes, through which the tube bundle passes and is sealed to the baffles. The provision of the baffles enables the reverse flow of the exhaust gas.

[0004] The shortcomings of the above-mentioned disclosed solution are: although the exhaust gas can flow back and forth in the tank body, the exhaust gas flows at a relatively fast speed, resulting in relatively low heat exchange efficiency; at the same time, the baffle at the bottom of the tank inner wall will hinder the smooth discharge of condensed water, resulting in a waste of water resources. Utility Model Content

[0005] The technical problem to be solved by the present invention is to overcome the existing defects and provide a continuous waste heat circulation system, which can effectively solve the problems in the background technology by slowing down the flow rate of the hot gas return through the inclined setting of the upper guide plate and the lower guide plate.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a continuous waste heat circulation system, comprising an exchanger, wherein the exchanger is provided with a water inlet joint, a water outlet joint, an air inlet pipe and a liquid discharge pipe connected to the interior thereof; a spiral tube is fixedly provided inside the exchanger, one end of the spiral tube is connected to the water inlet joint, and the other end of the spiral tube is connected to the water outlet joint; a plurality of upper guide plates and lower guide plates are fixedly provided on the top and bottom walls of the exchanger, respectively, for making the gas flow back in the exchanger; the upper guide plates and the lower guide plates are both arranged obliquely, and the inclination directions of the upper guide plates and the lower guide plates are opposite; a water flow hole is provided on the lower guide plate for allowing condensed water to pass through.

[0007] Furthermore, a boiler, a cooling water tank, a deaerator and a wet power water tank are respectively provided on the outside of the exchanger. The boiler's connecting pipe is connected to the air inlet pipe, the cooling water tank is connected to the water inlet joint, the deaerator is connected to the water outlet joint, and the wet power water tank is connected to the drain pipe.

[0008] Furthermore, the water inlet joint and the water outlet joint are respectively located at two ends of the exchanger, and the position of the water inlet joint is higher than that of the water outlet joint.

[0009] Furthermore, the air inlet pipe is located on a side of the top of the exchanger close to the water inlet joint, and the liquid discharge pipe is located on a side of the bottom of the exchanger close to the water outlet joint.

[0010] Furthermore, one side of the plurality of upper guide plates is respectively fitted with the spiral tube.

[0011] Compared with the prior art, the beneficial effects of the present invention are:

[0012] Because the upper and lower guide plates are arranged at an angle, and their inclinations are opposite, once the hot gas enters the exchanger, it is constantly redirected by the multiple upper and lower guide plates. Since the upper and lower guide plates are inclined in opposite directions, the gas flow rate is slowed, allowing the gas to fully contact the upper and lower guide plates and spiral tubes during the redirection process, thereby accelerating gas condensation and improving heat exchange efficiency. The condensed liquid from the hot gas flows along the upper and lower guide plates to the bottom of the exchanger, passing through the water holes and into the drain pipe, thus preventing the lower guide plate from obstructing the condensed water from flowing into the drain pipe and fully utilizing water resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is an overall schematic diagram of the structure of the utility model;

[0014] Figure 2 This is a cross-sectional view of the exchanger of the utility model structure.

[0015] In the figure: 1. Boiler; 2. Exchanger; 21. Spiral tube; 22. Water inlet joint; 23. Water outlet joint; 24. Air inlet pipe; 25. Drain pipe; 26. Upper guide plate; 27. Lower guide plate; 28. Water flow hole; 3. Wet water tank; 4. Cooling water tank; 5. Deaerator. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0017] See also Figure 1-Figure 2 The present invention provides a technical solution: a continuous waste heat circulation system, comprising an exchanger 2, which is a hollow cylindrical structure. The exchanger 2 is provided with a water inlet connector 22, a water outlet connector 23, an air inlet pipe 24, and a liquid discharge pipe 25, which are connected to the interior of the exchanger 2. The water inlet connector 22 and the water outlet connector 23 are located at opposite ends of the exchanger 2, with the water inlet connector 22 positioned higher than the water outlet connector 23. The air inlet pipe 24 is located at the top of the exchanger 2, near the water inlet connector 22, and the liquid discharge pipe 25 is located at the bottom of the exchanger 2, near the water outlet connector 23.

[0018] Outside the exchanger 2 are installed the boiler 1, cooling water tank 4, deaerator 5, and wet power water tank 3. The boiler 1's continuous pipe is connected to the air inlet pipe 24, the cooling water tank 4 is connected to the water inlet connector 22 via a pipe, the deaerator 5 is connected to the water outlet connector 23 via a pipe, and the wet power water tank 3 is connected to the drain pipe 25 via a pipe.

[0019] A spiral tube 21 is fixedly installed inside the exchanger 2 and arranged along the length of the exchanger 2. One end of the spiral tube 21 is connected to the water inlet connector 22, and the other end of the spiral tube 21 is connected to the water outlet connector 23. Multiple upper guide plates 26 and lower guide plates 27 are fixedly installed on the top and bottom walls of the exchanger 2, respectively. The multiple upper guide plates 26 and the multiple lower guide plates 27 are arranged at equal intervals and form a gas flow channel for returning the gas within the exchanger 2.

[0020] The upper and lower guide plates 26, 27 are both arranged at an angle, with their inclinations facing opposite directions. The sides of the upper and lower guide plates 26, 27 that are closest to each other are both tilted toward the water inlet connector 22. The lower guide plate 27 is provided with a water hole 28, located at its lowest end, to allow condensed water to pass through. Once condensed water collects at the bottom of the heat exchanger 2, it flows through the water hole 28 into the drain pipe 25, preventing the lower guide plate 27 from obstructing the flow of condensed water into the drain pipe 25.

[0021] One side of the plurality of upper guide plates 26 is respectively in contact with the spiral tube 21 , so as to facilitate heat exchange between the spiral tube 21 and the upper guide plates 26 , thereby accelerating the condensation speed of the gas by the upper guide plates 26 .

[0022] The working principle of the continuous waste heat circulation system provided by the utility model is as follows:

[0023] During use, the hot gas generated by the boiler 1 enters the exchanger 2 through the air inlet pipe 24. At the same time, the cooling water in the cooling water tank 4 is supplied to the spiral tube 21 through the water inlet joint 22. The spiral shape of the spiral tube 21 increases the path of the cooling water in the exchanger 2, so that the cooling water can fully absorb the heat in the exchanger 2.

[0024] The hot gas is continuously turned back under the guidance of multiple upper guide plates 26 and lower guide plates 27. Since the upper guide plates 26 and the lower guide plates 27 are inclined in opposite directions, the flow rate of the gas is slowed down, so that the gas is fully in contact with the upper guide plates 26, the lower guide plates 27 and the spiral tube 21 during the turning flow, thereby accelerating the condensation of the gas and at the same time accelerating the heating speed of the cooling water, thereby improving the efficiency of heat exchange.

[0025] The liquid condensed from the hot gas flows along the upper guide plate 26 and the lower guide plate 27 to the bottom of the exchanger 2, passes through the water flow hole 28 into the drain pipe 25, and flows from the drain pipe 25 into the wet electricity water tank 3 for standby use. By providing the water flow hole 28, the lower guide plate 27 is prevented from hindering the condensed water from flowing into the drain pipe 25, thereby making full use of water resources.

[0026] The cooling water absorbs enough heat in the process of condensing the hot gas, so that the cooling water is heated. The heated water is supplied to the deaerator 5 through the water outlet joint 23 for use, which effectively utilizes the heat of the exhaust hot gas and helps save energy.

[0027] Furthermore, since the water inlet joint 22 is lower than the water outlet joint 23 , the cooling water can fill the spiral tube 21 , maximizing the cooling effect of the cooling water in the spiral tube 21 and further improving the overall heat exchange efficiency.

[0028] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A continuous waste heat circulation system, comprising an exchanger (2), characterized in that: The exchanger (2) is provided with a water inlet joint (22), a water outlet joint (23), an air inlet pipe (24) and a liquid discharge pipe (25) which are in communication with the interior thereof; a spiral tube (21) is fixedly provided inside the exchanger (2); one end of the spiral tube (21) is in communication with the water inlet joint (22), and the other end of the spiral tube (21) is in communication with the water outlet joint (23); a plurality of upper guide plates (26) and lower guide plates (27) are fixedly provided on the top wall and the bottom wall of the exchanger (2) respectively, for making the gas flow back in the exchanger (2); the upper guide plates (26) and the lower guide plates (27) are both arranged at an angle, and the inclination directions of the upper guide plates (26) and the lower guide plates (27) are opposite; and a water flow hole (28) is provided on the lower guide plate (27) for allowing condensed water to pass through.

2. The tandem waste heat circulation system according to claim 1, characterized in that: The outside of the exchanger (2) is respectively provided with a boiler (1), a cooling water tank (4), a deaerator (5) and a wet electricity water tank (3); the continuous pipe of the boiler (1) is connected to the air inlet pipe (24), the cooling water tank (4) is connected to the water inlet joint (22), the deaerator (5) is connected to the water outlet joint (23), and the wet electricity water tank (3) is connected to the drain pipe (25).

3. The tandem waste heat circulation system according to claim 1, characterized in that: The water inlet joint (22) and the water outlet joint (23) are respectively located at two ends of the exchanger (2), and the position of the water inlet joint (22) is higher than the position of the water outlet joint (23).

4. The tandem waste heat circulation system according to claim 3, characterized in that: The air inlet pipe (24) is located on one side of the top of the exchanger (2) close to the water inlet joint (22), and the liquid discharge pipe (25) is located on one side of the bottom of the exchanger (2) close to the water outlet joint (23).

5. The tandem waste heat circulation system according to claim 1, characterized in that: One side of the plurality of upper guide plates (26) is respectively fitted with the spiral tube (21).

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