A heater that recovers heat energy to heat tap water

Abstract

The utility model discloses a kind of heater for heating tap water by heat recovery, it is related to the technical field of exhaust steam waste heat recovery, including waste heat recovery component, the waste heat recovery component includes water tank, baffle, connecting cylinder, water outlet pipe, water inlet pipe, shunt pipe;The outside of the water tank and the water tank inner chamber are located below the position of baffle and provided with heat exchange component, the heat exchange component is used to heat exchange operation for exhaust steam and tap water.This utility model is set to have multiple serpentine heat exchange coil heat exchange component and have internally provided with vortex guide vane water tank, so that exhaust steam, tap water respectively along direction opposite vortex trajectory flow, to realize tap water and exhaust steam sufficient, efficient heat exchange, reach the purpose of using exhaust steam waste heat to heat tap water, to realize the waste heat recovery of exhaust steam.

Description

Technical Field

[0001] This utility model relates to the field of waste steam heat recovery technology, specifically a heater for heating tap water by recovering heat energy. Background Technology

[0002] In thermal power plants (whether coal-fired, gas-fired, nuclear, or biomass-fired), the basic principle is: fuel chemical energy / nuclear energy → thermal energy → mechanical energy → electrical energy. During this process, high-temperature, high-pressure steam expands and performs work in the turbine, driving the rotor to rotate and generate electricity. After performing its work, the steam's pressure and temperature drop sharply, and the low-temperature, low-pressure steam discharged from the turbine's exhaust is called waste steam.

[0003] The exhaust steam in a power plant still has a certain amount of heat after it has done work, and it can do work again to achieve the reuse of heat energy. Based on this, in order to achieve efficient recovery of exhaust steam waste heat, a heater for heating tap water by heat energy recovery is provided. Utility Model Content

[0004] The purpose of this invention is to provide a heater that recovers heat energy to heat tap water in order to solve the problems mentioned above.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a heater for heating tap water by heat recovery, comprising a waste heat recovery component, wherein the waste heat recovery component comprises a water tank, a partition, a connecting cylinder, an outlet pipe, an inlet pipe, and a diversion pipe; The partition is fixed inside the water tank near the top. A through hole is provided in the middle of the partition. The connecting cylinder is fixed at the top middle of the partition and communicates with the through hole. The water outlet pipe passes through the water tank from the outside and is connected to the connecting cylinder. The water inlet pipe is located on the outside of the water tank and is connected to the inner cavity of the water tank through a diversion pipe. The connection port of the diversion pipe to the water tank is located below the partition. A heat exchange assembly is provided on the outside of the water tank and in the inner cavity of the water tank below the partition. The heat exchange assembly is used to exchange heat between the exhaust steam and the tap water.

[0006] As a further embodiment of this utility model: the heat exchange assembly includes an air inlet pipe, a serpentine heat exchange coil, and an outlet pipe; The air inlet pipe runs from the top of the water tank through the top of the water tank, the connecting cylinder, the through hole, and then to the bottom of the water tank. The serpentine heat exchange coils are distributed in the inner cavity of the water tank and located below the partition. Multiple serpentine heat exchange coils are evenly arranged vertically. One end of each serpentine heat exchange coil is connected to the air inlet pipe, and the other end passes through the water tank to the outside of the water tank and is connected to the outlet pipe. The air inlet pipe and the serpentine heat exchange coil are used to provide a flow channel for heat exchange between exhaust steam and tap water.

[0007] As a further embodiment of this utility model: a vortex guide plate is fixed to the bottom of the partition and the bottom of the inner wall of the water tank. The vortex guide plate is vertically distributed with multiple serpentine heat exchange coils, and the vortex guide plate is located in the middle of the vortex gap of the serpentine heat exchange coils.

[0008] As a further improvement of this utility model: the inner diameter of the through hole is larger than the outer diameter of the air intake pipe, and the through hole is connected to the middle region of the vortex guide plate.

[0009] As a further improvement of this utility model: multiple diversion pipes are evenly arranged vertically, and the diversion pipes are distributed in the middle of two adjacent serpentine heat exchange coils; One end of the outer side of the vortex guide plate is fixed to the inner wall of the water tank, and the port of the diversion pipe is tangent to the outer end of the vortex guide plate.

[0010] As a further embodiment of this utility model: the bottom of the air inlet pipe extends through to the bottom of the water tank, and the bottom of the water tank is also fixed with a drain outlet that communicates with the inner cavity of the water tank; The drain outlet and the bottom of the air inlet pipe are connected to a sealing block by bolts.

[0011] Compared with the prior art, the beneficial effects of this utility model are: By setting up heat exchange components with multiple serpentine heat exchange coils and a water tank with an internal vortex guide plate, the exhaust steam and tap water flow along vortex trajectories in opposite directions, thereby achieving full and efficient heat exchange between tap water and exhaust steam, and realizing the purpose of using the waste heat of exhaust steam to heat tap water, thus achieving waste heat recovery of exhaust steam. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the bottom structure of this utility model; Figure 3 This is a cross-sectional view of the structure of this utility model; Figure 4 This is a schematic diagram of the heat exchange component of this utility model; Figure 5 This is a top view showing the distribution of internal parts of the water tank of this utility model.

[0013] In the diagram: 1. Waste heat recovery assembly; 101. Water tank; 102. Baffle plate; 103. Through hole; 104. Connecting cylinder; 105. Water outlet pipe; 106. Vortex guide plate; 107. Water inlet pipe; 108. Diversion pipe; 109. Drain outlet; 2. Heat exchange assembly; 201. Air inlet pipe; 202. Serpentine heat exchange coil; 203. Discharge pipe; 3. Sealing block. Detailed Implementation

[0014] 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.

[0015] Please see Figures 1-5 In this embodiment of the utility model, a heater for heating tap water by heat recovery includes a waste heat recovery component 1, which includes a water tank 101, a partition 102, a connecting cylinder 104, a water outlet pipe 105, a water inlet pipe 107, and a diversion pipe 108. The partition 102 is fixed to the inside of the water tank 101 near the top. A through hole 103 is provided in the middle of the partition 102. The connecting tube 104 is fixed to the top middle of the partition 102 and communicates with the through hole 103. The water outlet pipe 105 passes through the water tank 101 from the outside side and is connected to and communicates with the connecting tube 104. The inlet pipe 107 is located on the outside of the water tank 101 and is connected to the inner cavity of the water tank 101 through the diversion pipe 108. The connection port between the diversion pipe 108 and the water tank 101 is located below the partition 102. A heat exchange assembly 2 is provided on the outside of the water tank 101 and in the inner cavity of the water tank 101 below the partition 102. The heat exchange assembly 2 is used to exchange heat between the exhaust steam and the tap water. Heat exchange assembly 2 includes an air inlet pipe 201, a serpentine heat exchange coil 202, and an outlet pipe 203; The air inlet pipe 201 passes through the top of the water tank 101, the connecting cylinder 104, the through hole 103 and the bottom of the water tank 101 in sequence. The serpentine heat exchange coils 202 are distributed in the inner cavity of the water tank 101 and located below the partition 102. Multiple serpentine heat exchange coils 202 are evenly arranged vertically. One end of the multiple serpentine heat exchange coils 202 is connected to the air inlet pipe 201, and the other end passes through the water tank 101 to the outside of the water tank 101 and is connected to the outlet pipe 203. The air inlet pipe 201 and the serpentine heat exchange coil 202 are used to provide a flow channel for heat exchange between exhaust steam and tap water; A vortex guide plate 106 is fixed at the bottom of the partition plate 102 and the bottom of the inner wall of the water tank 101. The vortex guide plate 106 is perpendicular to the multiple serpentine heat exchange coils 202, and the vortex guide plate 106 is located in the middle of the vortex gap of the serpentine heat exchange coils 202. The inner diameter of the through hole 103 is larger than the outer diameter of the intake pipe 201, and the through hole 103 is connected to the middle region of the vortex guide plate 106.

[0016] In this embodiment, it should be noted that when this device is in use, the top of the air inlet pipe 201 is connected to the exhaust steam conveying channel, the bottom of the water inlet pipe 107 is connected to the tap water pipe, the water outlet pipe 105 is connected to the heated tap water storage tank, and the discharge pipe 203 is connected to the exhaust steam condensate recovery pipe. The working principle of this heater is as follows: Exhaust steam is diverted through the air inlet pipe 201 into multiple serpentine heat exchange coils 202. At the same time, tap water is transported to the inner cavity of the water tank 101 through the water inlet pipe 107 and the diversion pipe 108, and flows in a vortex pattern from the outside to the inside along the trajectory of the vortex guide plate 106. Meanwhile, the exhaust steam flows in a vortex pattern from the inside to the outside along the trajectory of the serpentine heat exchange coils 202. At the same time, the flowing tap water is in full contact with the outer wall of the serpentine heat exchange coils 202, thereby realizing the heat exchange operation between the exhaust steam and the tap water. The tap water heated by the waste heat of the exhaust steam eventually gathers in the space between the inner side of the vortex guide plate 106 and the outer side of the air inlet pipe 201. At the same time, it enters the interior of the connecting cylinder 104 through the through hole 103 and is finally output through the water outlet pipe 105. After heat exchange, the exhaust steam condenses into water droplets, which then collect and are discharged through the discharge pipe 203. By combining the above components, the purpose of using waste steam heat to heat tap water can be achieved, thereby realizing the waste steam heat recovery.

[0017] Please refer to this carefully. Figure 1 , Figure 5 Multiple branch pipes 108 are evenly arranged vertically, and the branch pipes 108 are distributed between two adjacent serpentine heat exchange coils 202. One end of the outer side of the vortex guide plate 106 is fixed to the inner wall of the water tank 101, and the port of the diversion pipe 108 is tangent to the outer end of the vortex guide plate 106.

[0018] In this embodiment, the structure of multiple diversion pipes 108 can maintain a good vertical flow effect for the water inside the tank 101, avoiding dead zones in water flow.

[0019] Please refer to this carefully. Figure 2 , Figure 4The bottom of the air intake pipe 201 extends to the bottom of the water tank 101, and the bottom of the water tank 101 is also fixed with a drain outlet 109 that communicates with the inner cavity of the water tank 101. The drain outlet 109 and the bottom of the air inlet pipe 201 are connected by bolts to a sealing block 3.

[0020] In this embodiment: the sealing block 3 is used to seal the drain outlet 109 and the bottom of the air inlet pipe 201. The drain outlet 109 and the bottom port of the air inlet pipe 201 can be opened by removing the sealing block 3. The air inlet pipe 201 is opened to periodically clean the residual water inside the air inlet pipe 201, and the drain outlet 109 is opened to drain all the water inside the water tank 101 when the device is not in use.

[0021] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A heater for heating tap water by heat recovery, comprising a waste heat recovery assembly (1), characterized in that, The waste heat recovery assembly (1) includes a water tank (101), a partition (102), a connecting cylinder (104), a water outlet pipe (105), a water inlet pipe (107), and a diversion pipe (108). The partition (102) is fixed to the inside of the water tank (101) near the top. A through hole (103) is provided in the middle of the partition (102). The connecting tube (104) is fixed to the top middle of the partition (102) and communicates with the through hole (103). The water outlet pipe (105) passes through the water tank (101) from the outside and is connected to and communicates with the connecting tube (104). The inlet pipe (107) is located on the outside of the water tank (101) and is connected to the inner cavity of the water tank (101) through the diversion pipe (108). The connection port of the diversion pipe (108) and the water tank (101) is located below the partition (102). A heat exchange assembly (2) is provided on the outside of the water tank (101) and in the inner cavity of the water tank (101) below the partition (102). The heat exchange assembly (2) is used to perform heat exchange between exhaust steam and tap water.

2. A heater for heating tap water by heat recovery according to claim 1, characterized in that, The heat exchange assembly (2) includes an air inlet pipe (201), a serpentine heat exchange coil (202), and an outlet pipe (203). The air inlet pipe (201) runs from the top of the water tank (101) through the top of the water tank (101), the connecting cylinder (104), the through hole (103) to the bottom of the water tank (101); The serpentine heat exchange coils (202) are distributed in the inner cavity of the water tank (101) and located below the partition (102). Multiple serpentine heat exchange coils (202) are evenly arranged vertically. One end of each serpentine heat exchange coil (202) is connected to the air inlet pipe (201) and the other end passes through the water tank (101) to the outside of the water tank (101) and is connected to the outlet pipe (203). The air inlet pipe (201) and the serpentine heat exchange coil (202) are used to provide a flow channel for heat exchange between exhaust steam and tap water.

3. A heater for heating tap water by heat recovery according to claim 2, characterized in that, The bottom of the partition (102) and the bottom of the inner wall of the water tank (101) are fixed with a vortex guide plate (106). The vortex guide plate (106) is perpendicular to the multiple serpentine heat exchange coils (202), and the vortex guide plate (106) is located in the middle of the vortex gap of the serpentine heat exchange coils (202).

4. A heater for heating tap water by heat recovery according to claim 2, characterized in that, The inner diameter of the through hole (103) is larger than the outer diameter of the air intake pipe (201), and the through hole (103) is connected to the middle region of the vortex guide plate (106).

5. A heater for heating tap water by heat recovery according to claim 3, characterized in that, Multiple diversion pipes (108) are evenly arranged vertically, and the diversion pipes (108) are distributed between two adjacent serpentine heat exchange coils (202); One end of the outer side of the vortex guide plate (106) is fixed to the inner wall of the water tank (101), and the port of the diversion pipe (108) is tangent to the outer end of the vortex guide plate (106).

6. A heater for heating tap water by heat recovery according to claim 2, characterized in that, The bottom of the air inlet pipe (201) extends to the bottom of the water tank (101), and the bottom of the water tank (101) is also fixed with a drain outlet (109) that communicates with the inner cavity of the water tank (101). The drain outlet (109) and the bottom of the air inlet pipe (201) are connected by bolts to a sealing block (3).

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