A flue gas waste heat collection device

Abstract

The application discloses a flue gas waste heat collecting device, which comprises a shell and a turbulent flow assembly arranged in the shell; the turbulent flow assembly comprises a turbulent flow box, a first impeller and a second impeller are rotationally arranged in the turbulent flow box, the turbulent flow box is provided with a water outlet and a water inlet one, a transmission assembly is arranged in the turbulent flow box, and the first impeller is connected with the transmission assembly through a driving wheel; when fluid enters the turbulent flow box through the water inlet one, the driving wheel rotates along the flowing direction of the fluid, the first impeller and the second impeller rotate reversely under the driving of the transmission assembly, and the rotation of the first impeller and the second impeller can drive the fluid at both ends of the turbulent flow box to collide and be discharged from the water outlet; the water flow speed in the shell can be automatically adjusted through the turbulent flow box, so that the water flow at both ends of the turbulent flow box collides to form turbulent flow, and scale inhibition and corrosion mitigation can be realized on the flue gas inlet pipeline through the turbulent flow disturbance.

Description

TECHNICAL FIELD

[0001] The present application relates to a flue gas waste heat collection device, belonging to the technical field of waste heat collection. BACKGROUND

[0002] Flue gas waste heat recovery usually adopts three methods: one is to preheat workpieces; two is to preheat combustion-supporting air; three is to preheat coal gas. Flue gas preheating workpieces requires a large space for heat exchange, which is often limited by the operation site (batch production of trolley type furnace cannot use this method). Preheating coal gas does not need to use such high-temperature flue gas, and is not implemented for safety considerations. Desulfurization and dust removal preheat combustion-supporting air is a better method, and heating furnaces are generally installed, which can increase the theoretical combustion temperature of fuel, improve combustion conditions and increase the speed of combustion gas, thereby achieving the purpose of energy saving.

[0003] The existing flue gas waste heat collection device is used for a long time, which causes the flue gas pipeline to be in contact with water for a long time. As a result, the outer wall of the pipeline will form scale. If the scale is too thick, it will reduce the sealing performance of the pipeline and cause faults. Moreover, it is extremely inconvenient to clean. The existing technology directly cleans the scale on the pipeline by relying on manpower or devices, and does not consider reducing or slowing down the possibility of scale formation from the perspective of scale formation. SUMMARY

[0004] The present application aims to provide a flue gas waste heat collection device to solve the above problems in the prior art.

[0005] In order to achieve the above-mentioned goal, the present application adopts the following technical scheme:

[0006] A flue gas waste heat collection device, comprising a shell and a turbulent flow assembly arranged in the shell;

[0007] The turbulent flow assembly comprises a turbulent flow box, a first impeller and a second impeller are rotatably arranged in the turbulent flow box, the turbulent flow box is provided with a water outlet and a water inlet one, a transmission assembly is arranged in the turbulent flow box, and the first impeller is connected with the transmission assembly through a driving wheel;

[0008] When the fluid enters the turbulent flow box through the water inlet one, the driving wheel rotates along the flow direction of the fluid, and the first impeller and the second impeller rotate in opposite directions under the drive of the transmission assembly. The rotation of the first impeller and the second impeller can drive the fluid at both ends of the turbulent flow box to collide and be discharged from the water outlet.

[0009] The first impeller and the second impeller are rotatably installed in the turbulent flow box through an internally arranged rotating shaft.

[0010] As a preferred scheme of the present application, the transmission assembly comprises a driving gear one and a driving gear two, and the driving gear and the driving gear two are both installed in the other side of the turbulent flow box through the inner rotating shaft.

[0011] As a preferred scheme of the present application, the driving gear one is connected with the first impeller through the driving wheel, and the driving gear two is connected with the second impeller through the rotating shaft connected therewith.

[0012] As a preferred scheme of the present application, the two sides of the driving gear one are both connected with the driving gear two through meshing.

[0013] As a preferred scheme of the present application, when the driving gear one rotates under the driving of the driving wheel, the driving gear two rotates synchronously through the meshing with the driving gear one.

[0014] As a preferred scheme of the present application, the water inlet two is arranged on the side of the shell corresponding to the position of the turbulent flow assembly, the water outlet is arranged on the other side of the shell, and the smoke inlet pipeline is arranged in the inner part of the shell.

[0015] The present application has the following beneficial effects:

[0016] The present application can automatically adjust the water flow velocity in the shell through the turbulent flow box, so that the water flow at both ends of the turbulent flow box collides to form turbulent flow, and the scale inhibition and corrosion resistance of the smoke inlet pipeline can be achieved through the turbulent flow disturbance. In the specific implementation, the water enters the turbulent flow box through the water inlet one and drives the driving wheel to rotate. The driving wheel rotates and drives the first impeller and the second impeller to rotate reversely through the meshing transmission of the driving gear one and the driving gear two. The first impeller and the second impeller rotate to drive the water flow at both ends of the turbulent flow box to collide to form liquid turbulent flow, and the liquid turbulent flow is discharged from the water outlet to the vicinity of the smoke inlet pipeline. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is the schematic diagram of the whole structure of the present application;

[0018] Figure 2 is the sectional view of the present application;

[0019] Figure 3 is the sectional view of the turbulent flow box of the present application.

[0020] The meanings of the reference signs in the drawings are as follows: 1, shell; 2, turbulent flow box; 21, first impeller; 22, second impeller; 23, water outlet; 24, driving wheel; 25, driving assembly; 251, driving gear one; 252, driving gear two; 3, water inlet two; 4, water outlet; 5, smoke inlet pipeline. DETAILED DESCRIPTION

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0022] like Figure 1 - Figure 3 As shown, the present invention provides a flue gas waste heat collection device, including a housing 1 and a turbulence assembly disposed therein; the turbulence assembly includes a turbulence chamber 2, in which a first impeller 21 and a second impeller 22 are rotatably disposed, the turbulence chamber 2 is provided with an outlet 23 and an inlet 1, and a transmission assembly is provided inside the turbulence chamber 2, the first impeller 21 being connected to the transmission assembly via a drive wheel 24; when fluid enters the turbulence chamber 2 through the inlet 1, the drive wheel 24 rotates in the direction of fluid flow, and the first impeller 21 and the second impeller 22 rotate in opposite directions under the drive of the transmission assembly, the rotation of the first impeller 21 and the second impeller 22 can drive the fluid at both ends of the turbulence chamber 2 to collide and be discharged from the outlet 23.

[0023] Furthermore, both the first impeller 21 and the second impeller 22 are rotatably mounted inside the turbulence chamber 2 via an internal rotating shaft.

[0024] Furthermore, the transmission assembly includes a first drive gear 251 and a second drive gear 252, both of which are mounted on the other side of the turbulence chamber 2 via an internal rotating shaft.

[0025] Furthermore, the first drive gear 251 is connected to the first impeller 21 via the drive wheel 24, and the second drive gear 252 is connected to the second impeller 22 via a rotating shaft connected to it.

[0026] Furthermore, both sides of the first driving gear 251 are meshed with the second driving gear 252.

[0027] Furthermore, when the first drive gear 251 rotates under the drive of the drive wheel 24, the second drive gear 252 rotates synchronously by meshing with the first drive gear 251.

[0028] Furthermore, it also includes a second water inlet 3, which is located on one side of the housing 1 corresponding to the turbulence component position. A drain outlet 4 is provided on the other side of the housing 1, and a smoke inlet pipe 5 is provided inside the housing 1.

[0029] The flue gas passes through the flue gas inlet pipe 5 located inside the shell 1, which can heat the water inside the shell 1, thereby achieving the purpose of recovering and utilizing the waste heat of the flue gas.

[0030] Working principle:

[0031] Refer to the instruction manual appendix Figures 1-3After water is injected into the inside of the shell 1 through the water inlet two 3 and the water inlet one in turn, and flue gas is injected into the shell 1 through the flue gas pipeline 5, the flue gas injected into the flue gas pipeline can heat the water in the shell 1, and the flue gas waste heat collection work is carried out. When the water is injected into the turbulent tank 2 through the water inlet one, the driving wheel 24 rotates along the flow direction of the water, the first impeller 21 and the second impeller 22 rotate reversely under the drive of the driving gear one 251 and the driving gear two 252, the first impeller 21 and the second impeller 22 rotate and drive the water flow at both ends in the turbulent tank 2 to collide to form liquid turbulence, and the liquid turbulence is discharged from the water outlet 23. The liquid turbulence discharged from the water outlet 23 is transmitted close to the flue gas pipeline part submerged below the water surface to form strong turbulence, slow down the corrosion of the outer wall of the pipeline, and hinder the scaling;

[0032] The application can automatically adjust the flow velocity of the water in the shell 1 through the turbulent tank 2, so that the water flow at both ends in the turbulent tank 2 collides to form turbulence, and the scaling inhibition and corrosion inhibition of the flue gas pipeline 5 can be realized by using the turbulence disturbance. In specific implementation, the water enters the turbulent tank 2 through the water inlet one, and drives the driving wheel 24 to rotate by itself. While the driving wheel 24 rotates, the first impeller 21 and the second impeller 22 rotate reversely through the meshing transmission of the driving gear one 251 and the driving gear two 252, the first impeller 21 and the second impeller 22 rotate and drive the water flow at both ends in the turbulent tank 2 to collide to form liquid turbulence, and the liquid turbulence is discharged from the water outlet 23 to the vicinity of the flue gas pipeline 5.

[0033] The above is only the preferred embodiment of the application, and it should be pointed out that for ordinary skilled in the art, without departing from the technical principles of the application, a number of improvements and modifications can be made, and these improvements and modifications should be considered as the protection scope of the application.

Claims

1. A flue gas waste heat recovery device, characterized by, The shell (1) and the turbulent flow assembly arranged inside the shell (1); The turbulent flow assembly comprises a turbulent flow box (2), the first impeller (21) and the second impeller (22) are arranged in the turbulent flow box (2) and rotate, the turbulent flow box (2) is provided with a water outlet (23) and a water inlet (1), the transmission assembly (25) is arranged in the turbulent flow box (2), and the first impeller (21) is connected with the transmission assembly (25) through the driving wheel (24). When the fluid enters the turbulent flow box (2) through the water inlet (1), the driving wheel (24) rotates along the flow direction of the fluid, and the first impeller (21) and the second impeller (22) rotate reversely under the drive of the transmission assembly (25), the rotation of the first impeller (21) and the second impeller (22) can drive the fluid at both ends of the turbulent flow box (2) to collide and be discharged from the water outlet (23).

2. A flue gas heat recovery device according to claim 1, characterised in that The first impeller (21) and the second impeller (22) are rotatably arranged in the turbulent flow box (2) through the rotatable shafts arranged therein.

3. A flue gas heat recovery device according to claim 1, characterised in that The transmission assembly (25) comprises a driving gear (251) and a driving gear (252), the driving gear (251) and the driving gear (252) are arranged on the other side of the turbulent flow box (2) through the rotatable shafts arranged therein.

4. A flue gas heat recovery device according to claim 3, characterised in that The driving gear (251) is connected with the first impeller (21) through the driving wheel (24), and the driving gear (252) is connected with the second impeller (22) through the rotatable shafts arranged therein.

5. A flue gas heat recovery device according to claim 3, characterised in that The driving gear (251) is connected with the driving gear (252) through the rotatable shafts arranged therein.

6. A flue gas heat recovery device according to claim 3, characterised in that When the driving gear (251) rotates under the drive of the driving wheel (24), the driving gear (252) rotates synchronously through the meshing with the driving gear (251).

7. A flue gas heat recovery device according to claim 1, characterised in that The water inlet (3) is arranged on one side of the shell (1) corresponding to the position of the turbulent flow assembly, the other side of the shell (1) is provided with a drain outlet (4), and the inside of the shell (1) is provided with a smoke inlet pipe (5).

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