CN219015005U

CN219015005U - Waste heat collecting device

Info

Publication number: CN219015005U
Application number: CN202320019222.2U
Authority: CN
Inventors: 孙全福; 魏雅琪; 温璐亚
Original assignee: Shanghai Ziyi Intelligent System Engineering Co ltd
Current assignee: Shanghai Ziyi Intelligent System Engineering Co ltd
Priority date: 2023-01-05
Filing date: 2023-01-05
Publication date: 2023-05-12
Anticipated expiration: 2033-01-05

Abstract

The utility model relates to a waste heat collecting device. The technical scheme adopted is as follows: including rotary kiln flue, its characterized in that: the utility model discloses a rotary kiln flue, including rotary kiln flue, mounting hole, upper and lower the mounting hole is offered 4 groups around flue wall circumference array respectively about the mounting hole respectively with the fixed suit in both ends of interior heat pipe together, interior heat pipe includes the standpipe, the standpipe is located the flue, even array sets up the heat conduction disc on the pipe wall of standpipe, the upper and lower both ends of standpipe outwards level respectively buckling fixed connection L type pipe, upper portion the upper end of L type pipe communicates with the bottom circumference of water inlet tank respectively, lower part the lower extreme of L type pipe communicates with the upper portion circumference of water storage tank respectively, the water inlet tank is ring form shell, both ends trompil fixed connection L type inlet tube about its upper surface respectively. The utility model has the beneficial effects that: directly contacts with the flue gas, improves the heat conduction efficiency and improves the waste heat recovery utilization rate.

Description

Waste heat collecting device

Technical Field

The utility model belongs to the field of cement production, and relates to a waste heat collecting device.

Background

When cement production is carried out, a large amount of flue gas with heat is usually generated, the common practice is that the flue gas with heat is discharged through a flue of the rotary kiln, in order to improve recycling of the heat in the flue gas, the prior practice mostly adopts a heat conduction pipe which is spirally arranged outside the flue of the rotary kiln, and heat is conducted to cold water through a flue wall of the flue of the rotary kiln to heat, so that recycling of the heat in the flue gas is completed, however, the heat conduction pipe which conducts heat is not directly contacted with the flue gas, and therefore, recycling efficiency of waste heat in the flue gas is not high.

Therefore, the utility model provides a waste heat collecting device, which improves the effect of recovering heat in flue gas by adopting a mode of arranging inner heat conducting pipes in a circumferential array in a flue of a rotary kiln, and simultaneously, the upper and lower arrays of the circumferential walls of the inner heat conducting pipes are provided with heat conducting discs, so that the flue gas flow flowing through the surfaces of the inner heat conducting pipes is retarded, the contact time between the inner heat conducting pipes and the flue gas flow is prolonged, the heating efficiency is further improved, and the waste heat recovery efficiency is improved, thereby solving the problems.

Disclosure of Invention

In view of the problems existing in the prior art, the utility model discloses a waste heat collecting device, which adopts the technical scheme that the waste heat collecting device comprises a rotary kiln flue and is characterized in that: the upper and lower mounting holes are respectively formed in the upper and lower side walls of the rotary kiln flue, 4 groups of mounting holes are respectively formed around the circumferential array of the flue wall, the upper and lower mounting holes are respectively fixedly sleeved with two ends of an inner heat-conducting pipe, the inner heat-conducting pipe comprises a vertical pipe, the vertical pipe is positioned in the flue, heat-conducting disks are uniformly arranged on the pipe wall of the vertical pipe in an array manner, the upper and lower ends of the vertical pipe are respectively and horizontally bent and fixedly connected with an L-shaped guide pipe, the upper end of the L-shaped guide pipe is respectively communicated with the bottom circumference of a water inlet tank, the lower end of the L-shaped guide pipe is respectively communicated with the upper circumference of a water storage tank, the water inlet tank is a circular empty shell, and the left and right ends of the upper surface of the water inlet tank are respectively and horizontally bent and fixedly connected with an L-shaped water inlet pipe; through adopting the mode at the inside circumference array of rotary kiln flue setting up interior heat pipe, improve the effect to heat recovery in the flue gas, the heat conduction disc is seted up to the upper and lower array on the circumference wall of interior heat pipe simultaneously, delays the flue gas air current of flowing through its surface to increase its contact time with interior heat pipe, further improve the efficiency of heating, thereby improve waste heat recovery's efficiency.

As a preferable scheme of the utility model, the heat conducting disc is conical, the upper part is small, the lower part is big, the opening is downward, and a plurality of air guide holes are formed in the circumferential array of the conical outer side wall of the heat conducting disc; the hot air flowing into the opening at the lower part of the heat conducting disc is blocked and delayed around the pipe wall of the inner heat conducting pipe, and finally, the hot air is slowly discharged through the air guide holes formed in the circumferential array of the conical outer side wall of the heat conducting disc 22, so that the contact time between the flue gas and the inner heat conducting pipe is prolonged, the heat in the flue gas rapidly heats the inner heat conducting pipe, and the heating efficiency is improved.

As a preferable scheme of the utility model, a first electromagnetic valve is fixedly arranged on the wall of a vertical pipe of the L-shaped conduit at the lower part; through the detected signal according to temperature sensor, the first electromagnetic valve of switch realizes the automatic discharge to the hot water after the heating, and is more intelligent.

As a preferable scheme of the utility model, the lower part of the L-shaped conduit is provided with an opening at the bending part for inserting the temperature sensor.

As a preferable scheme of the utility model, a second electromagnetic valve is fixedly arranged on the pipe wall of the L-shaped water inlet pipe; through the second electromagnetic valve, automatic water feeding into the water inlet tank is realized.

As a preferable scheme of the utility model, the water storage tank is a ring-shaped empty shell, the shell of the water storage tank is made of heat insulation materials, the left end and the right end of the lower surface of the water storage tank are respectively provided with holes and fixedly connected with an L-shaped drain pipe, and a third electromagnetic valve is fixedly arranged on the pipe wall of the L-shaped drain pipe.

The utility model has the beneficial effects that: through adopting the mode at the inside circumference array of rotary kiln flue setting up interior heat pipe, improve the effect to heat recovery in the flue gas, simultaneously set up the heat conduction disc at the circumference wall upper and lower array of interior heat pipe, the flue gas air current of delaying its surface of flowing through to increase its contact time with interior heat pipe, further improve the efficiency of heating, thereby improve waste heat recovery's efficiency, in addition, temperature sensor is installed to the L type pipe of interior heat pipe lower part, can monitor the temperature of heating, is convenient for realize automated control, reduces human intervention.

Drawings

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

FIG. 2 is a schematic view of an inner heat pipe according to the present utility model;

FIG. 3 is a cross-sectional view of the water inlet tank and the water storage tank of the present utility model.

In the figure: the device comprises a 1-rotary kiln flue, a 2-internal heat conducting pipe, a 3-water inlet tank, a 4-water storage tank, an 11-mounting hole, a 21-vertical pipe, a 22-heat conducting disc, a 221-air guiding hole, a 23-L-shaped guide pipe, a 24-first electromagnetic valve, a 25-temperature sensor, a 31-L-shaped water inlet pipe, a 32-second electromagnetic valve, a 41-L-shaped drain pipe and a 42-third electromagnetic valve.

Detailed Description

Example 1

As shown in fig. 1, the waste heat collecting device provided by the utility model adopts the technical scheme that the waste heat collecting device comprises a rotary kiln flue 1, wherein mounting holes 11 are respectively formed in the upper side wall and the lower side wall of the rotary kiln flue 1, 4 groups of mounting holes 11 are respectively formed around the circumferential array of the flue wall, an inner heat conducting pipe 2 is arranged in the rotary kiln flue 1 through the mounting holes 11 respectively formed in the upper side and the lower side, two ends of the inner heat conducting pipe 2 are horizontally bent and fixed in the upper mounting holes 11 and the lower mounting holes 11, and flue gas generated by the rotary kiln is discharged from bottom to top through the rotary kiln flue 1.

As shown in fig. 2, the mounting holes 11 are respectively fixedly sleeved with two ends of the inner heat conducting pipe 2, the inner heat conducting pipe 2 comprises a vertical pipe 21, the vertical pipe 21 is located in a flue, heat conducting discs 22 are uniformly arranged on the pipe wall of the vertical pipe 21 in an array mode, the heat conducting discs 22 are conical, the openings of the heat conducting discs are downward large, a plurality of air guide holes 221 are formed in the circumferential array of the conical outer side wall of the heat conducting discs 22, the upper end and the lower end of the vertical pipe 21 are respectively and horizontally bent and fixedly connected with an L-shaped pipe 23, a first electromagnetic valve 24 is fixedly mounted on the pipe wall of the vertical pipe 23 at the lower portion, a temperature sensor 25 is inserted in the bent position of the L-shaped pipe 23, flue gas with heat is blocked by the heat conducting discs 22 on the circumference of the inner heat conducting pipe 2 when the flue gas flows through the inner heat conducting pipe 2, and the heat conducting discs 22 are conical, the openings of the heat conducting discs 22 are downward large and downward, therefore the hot air flowing into the openings of the heat conducting discs 22 is blocked and delayed by the inner heat conducting pipe 2, finally the heat conducting pipe wall is slowly heated by the cold water in the heat conducting pipe 2, and the flue gas is heated by the heat in the inner heat conducting pipe 2, and the flue gas is slowly heated by the heat conducting pipe 2.

As shown in fig. 3, the upper end of the L-shaped conduit 23 at the upper part is respectively communicated with the bottom circumference of the water inlet tank 3, the water inlet tank 3 is a ring-shaped empty shell, the left and right ends of the upper surface of the water inlet tank are respectively provided with holes and fixedly connected with the L-shaped water inlet pipe 31, the pipe wall of the L-shaped water inlet pipe 31 is also fixedly provided with a second electromagnetic valve 32, and cold water respectively enters the water inlet tank 3 through the L-shaped water inlet pipe 31 and flows into the inner heat conducting pipe 2 at the lower part.

As shown in fig. 3, the lower end of the L-shaped conduit 23 at the lower part is respectively communicated with the upper circumferential surface of the water storage tank 4, the water storage tank 4 is a ring-shaped empty shell, the shell is made of heat-insulating material, the left and right ends of the lower surface of the shell are respectively provided with holes and fixedly connected with the L-shaped drain pipe 41, the wall of the L-shaped drain pipe 41 is also fixedly provided with a third electromagnetic valve 42, and hot water heated by the inner heat-conducting pipe 2 flows into the lower water storage tank 4 through the lower L-shaped conduit 23 for heat insulation and storage.

The working principle of the utility model is as follows: when the device is used, cold water is respectively introduced from the L-shaped water inlet pipe 31 at the upper part of the water inlet tank 3, flows into the inner heat conducting pipe 2 at the lower part through the water inlet tank 3, smoke generated in cement production enters through the opening at the lower part of the rotary kiln flue 1, when the smoke flows through the inner heat conducting pipe 2 inside the rotary kiln flue 1, the smoke is blocked layer by the heat conducting disc 22 at the circumference of the inner heat conducting pipe 2, and the opening is downward, and is large and small, so that hot air flowing into the opening of the heat conducting disc 22 is blocked and delayed by the wall of the inner heat conducting pipe 2, the contact time of the smoke and the inner heat conducting pipe 2 is prolonged, so that the heat in the smoke heats the inner heat conducting pipe 2, the inner heat conducting pipe 2 heats cold water inside the smoke, heat exchange is completed, the heat in the smoke is transferred into the cold water in the inner heat conducting pipe 2, waste heat recovery is realized, and finally, after the temperature sensor 25 inserted at the bending part of the L-shaped pipe 23 at the lower part is detected, the first electromagnetic valve 24 is opened, the heated and the heated hot water is guided into the water storage tank 4 through the L-shaped pipe 23 at the lower part, and the heat is repeatedly stored in the water storage tank 4, and the heat is recycled into the flue 1, and the heat is recovered.

Electrical connections or structures not described in detail herein are prior art.

Although the specific embodiments of the present utility model have been described in detail, the present utility model is not limited to the above embodiments, and various changes and modifications without inventive labor may be made within the scope of the present utility model without departing from the spirit of the present utility model, which is within the scope of the present utility model.

Claims

1. The utility model provides a waste heat collection device, includes rotary kiln flue (1), its characterized in that: the utility model discloses a rotary kiln flue, including rotary kiln flue (1), including rotary kiln flue, mounting hole (11), upper and lower mounting hole (11) are offered 4 sets of around flue wall circumference array respectively, upper and lower mounting hole (11) are in the same place with the fixed suit in both ends of interior heat-conducting tube (2) respectively, interior heat-conducting tube (2) include standpipe (21), standpipe (21) are located the flue, even array sets up heat conduction disc (22) on the pipe wall of standpipe (21), the upper and lower both ends of standpipe (21) outwards buckle fixed connection L type pipe (23) respectively, upper portion the upper end of L type pipe (23) communicates with the bottom circumference of water tank (3) respectively, lower part the lower extreme of L type pipe (23) communicates with the upper portion circumference of water tank (4) respectively, water tank (3) are ring form shell, both ends trompil fixed connection L type inlet tube (31) about its upper surface respectively.

2. The waste heat collection device of claim 1, wherein: the heat conducting disc (22) is conical, the upper part of the heat conducting disc is small, the lower part of the heat conducting disc is large, the opening of the heat conducting disc is downward, and a plurality of air guide holes (221) are formed in the circumferential array of the conical outer side wall of the heat conducting disc (22).

3. The waste heat collection device of claim 1, wherein: a first electromagnetic valve (24) is fixedly arranged on the wall of the vertical pipe of the L-shaped conduit (23) at the lower part.

4. A waste heat collecting device as claimed in claim 3, wherein: and a temperature sensor (25) is inserted in the opening of the bending part of the L-shaped conduit (23) at the lower part.

5. The waste heat collection device of claim 1, wherein: and a second electromagnetic valve (32) is fixedly arranged on the pipe wall of the L-shaped water inlet pipe (31).

6. The waste heat collection device of claim 1, wherein: the water storage tank (4) is a ring-shaped empty shell, a shell of the water storage tank is made of heat insulation materials, the left end and the right end of the lower surface of the water storage tank are respectively and fixedly connected with an L-shaped drain pipe (41), and a third electromagnetic valve (42) is fixedly installed on the pipe wall of the L-shaped drain pipe (41).