CN213238433U

CN213238433U - Heat-conducting oil heat-exchanging type electric forging furnace

Info

Publication number: CN213238433U
Application number: CN202022110612.XU
Authority: CN
Inventors: 王宇坤; 黄金; 张波
Original assignee: Ningxia Hongji New Material Technology Co ltd
Current assignee: Ningxia Hongji New Material Technology Co ltd
Priority date: 2020-09-23
Filing date: 2020-09-23
Publication date: 2021-05-18
Anticipated expiration: 2030-09-23

Abstract

The utility model provides a stove is forged to conduction oil heat transfer formula electricity, including forging stove, heat transfer device, mend oily device, forge the stove and include the furnace body and set up in the chimney at furnace body top, heat transfer device includes heat transfer case, heat exchange tube group, establish the replacement heat tube group in heat transfer incasement portion, heat exchange tube group inside is used for letting in the conduction oil, set up the connecting tube between chimney bottom and the heat transfer case, still set up supplementary evacuation pipe at heat transfer roof portion, bottom and the inside intercommunication of heat transfer incasement portion, still set up first flashboard bottom the chimney, the height that highly is higher than the connecting tube of first flashboard, set up the second flashboard on the connecting tube, set up the third flashboard on supplementary evacuation pipe, this scheme passes through heat transfer device and realizes the heat transfer to the make full use of roaster tail gas heat. Therefore, the scheme can also realize the temperature controllability of heat transfer oil.

Description

Heat-conducting oil heat-exchanging type electric forging furnace

Technical Field

The utility model relates to a coal product calcines technical field, especially relates to a heat conduction oil heat transfer formula electricity forge furnace.

Background

The calcining furnace comprises a common calcining furnace and an electric calcining furnace, the calcining temperature is high, the heat of calcined tail gas is also high and sometimes is in a flame state, the tail gas is discharged or enters a tail gas treatment system along a chimney at the top of the calcining furnace, the temperature of flame in the chimney is high and can be fully utilized, and in the prior art, the part of heat is only simply used for water heat exchange, the specific heat capacity of water is low, the part of heat cannot be fully utilized and still is discharged, so that waste is caused.

Disclosure of Invention

There is a need for a heat transfer oil heat exchange type electric forging furnace.

A heat-conducting oil heat-exchange type electric calcining furnace comprises a calcining furnace body and a chimney arranged at the top of the furnace body, wherein the heat exchange device is arranged at the top of the furnace body, the oil supplementing device is arranged above the heat exchange device and communicated with the heat exchange device, the top of the chimney is a flue gas emptying port, the heat exchange device comprises a heat exchange box and a heat exchange tube group, the heat exchange box is a hollow sealed cavity, the heat exchange box is internally provided with a heat exchange tube group, heat-conducting oil is introduced into the heat exchange tube group, a connecting pipeline is arranged between the bottom of the chimney and the heat exchange box, the top of the auxiliary emptying tube is open, the bottom of the auxiliary emptying tube is communicated with the inside of the heat exchange box, the bottom of the chimney is provided with a first flashboard, the height of the first flashboard is higher than that of the connecting pipeline, and a second flashboard is arranged on the connecting pipeline, and a third flashboard is arranged on the auxiliary emptying pipe.

Preferably, the auxiliary emptying pipe and the connecting pipeline are positioned at two opposite ends of the box body.

Preferably, the side wall of the heat exchange box is sequentially provided with a steel plate layer, an isolation layer and a heat insulation layer from outside to inside.

Preferably, the oil supplementing device is an oil supplementing tank which is a hollow box body and is used for containing heat conduction oil, and a liquid level meter is arranged on the outer wall of the oil supplementing tank and used for observing the oil level inside the oil supplementing tank.

Preferably, an oil supplementing pipe is further arranged between the oil supplementing tank and the heat exchange tank, and a control valve is further arranged on the oil supplementing pipe.

Preferably, the inlet and the outlet of the heat exchange tube set are positioned outside the box body, the inlet of the heat exchange tube set is connected with the oil supplementing tube, and the outlet of the heat exchange tube set is provided with the temperature detector.

Preferably, an inlet pipeline and an outlet pipeline are further arranged on the side wall of the heat exchange box and are connected with the connecting pipeline and the auxiliary emptying pipe respectively, the heat exchange pipe group is an S-shaped oil pipe arranged in the heat exchange box in a coiled mode and comprises a first circulation section, a second circulation section and a third circulation section which are sequentially connected in a back-turning mode end to end, the end portion of the first circulation section is located outside the heat exchange box, the end portion of the third circulation section is located outside the heat exchange box, a first isolation wall is further arranged between the first circulation section and the second circulation section, a second isolation wall is further arranged between the second circulation section and the third circulation section, one end of the first isolation wall is connected with the side wall of the heat exchanger, the other end of the first isolation wall extends inwards, one end of the second isolation wall is connected with the other side wall of the heat exchanger, and the other end of.

This scheme is passed through heat transfer device and is realized the heat transfer to the conduction oil to make full use of calcining furnace tail gas heat. The heat quantity obtained by exchanging is more because the specific heat capacity of the heat conduction oil is larger, but the heat conduction oil is deteriorated due to high temperature because the flash point of the heat conduction oil is about 240 ℃. Therefore, the scheme can also realize the temperature controllability of heat transfer oil.

Drawings

Fig. 1 is a schematic structural diagram of the device.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a schematic structural diagram of the heat exchange device.

In the figure: the device comprises a calcining furnace 10, a furnace body 11, a chimney 12, a first gate 13, a connecting pipeline 14, a second gate 15, a heat exchange device 20, a heat exchange box 21, a steel plate layer 211, an isolation layer 212, a heat insulation layer 213, a first isolation wall 214, a second isolation wall 215, a heat exchange tube group 22, a first circulation section 221, a second circulation section 222, a third circulation section 223, an auxiliary emptying tube 23, a third gate 24, an inlet pipeline 25, an outlet pipeline 26, an oil supplementing device 30 and an oil supplementing tube 31.

Detailed Description

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.

Referring to fig. 1-3, an embodiment of the present invention provides a heat conduction oil heat exchange type electric calcining furnace, including a calcining furnace 10, a heat exchange device 20, and an oil supplementing device 30, where the calcining furnace 10 includes a furnace body 11 and a chimney 12 disposed on the top of the furnace body 11, the heat exchange device 20 is disposed on the top of the furnace body 11, the oil supplementing device 30 is disposed above the heat exchange device 20 and communicated with the heat exchange device 20, the top of the chimney 12 is a flue gas evacuation port, the heat exchange device 20 includes a heat exchange box 21 and a heat exchange tube set 22, the heat exchange box 21 is a hollow sealed cavity, a heat exchange tube set 22 is disposed inside the heat exchange box 21, (the heat exchange tube set 22 is an S-shaped oil tube coiled inside the box), the heat exchange tube set 22 is used for introducing heat conduction oil, a connecting pipeline 14 is disposed between the bottom of the chimney 12 and the heat exchange box 21, and an, the top of the auxiliary emptying pipe 23 is open, the bottom of the auxiliary emptying pipe is communicated with the interior of the heat exchange box 21, a first flashboard 13 is further arranged at the bottom of the chimney 12, the height of the first flashboard 13 is higher than that of the connecting pipeline 14, a second flashboard 15 is arranged on the connecting pipeline 14, and a third flashboard 24 is arranged on the auxiliary emptying pipe 23.

When heat exchange is not needed, the first flashboard 13 is opened, the second flashboard 15 is closed, and flame or smoke is discharged along the chimney 12; when heat exchange is needed, the first gate plate 13 is closed, the second gate plate 15 is opened, the third gate plate 24 is opened, and flame or smoke enters the heat exchange box 21 to exchange heat with heat conduction oil; when the heat transfer temperature of the heat transfer oil is too high, part of the first flashboards 13 are opened, and part of the second flashboards 15 are closed, so that the heat entering the heat transfer box 21 is reduced, the temperature of the heat transfer oil is controllable, and the phenomenon that the heat transfer oil is overheated and goes bad is avoided.

Further, the auxiliary emptying pipe 23 and the connecting pipe 14 are located at opposite ends of the box body so as to be farthest away from each other, thereby maximizing the flowing time and the flowing distance of the flame inside the box body.

Further, the side wall of the heat exchange box 21 is sequentially provided with a steel plate layer 211, an isolation layer 212 and a heat insulation layer 213 from outside to inside. The steel plate layer 211 is formed by welding steel plates, the isolation layer 212 is made of a material with an extremely low heat conductivity coefficient, such as an asbestos layer, and the heat insulation layer 213 is formed by building heat insulation bricks.

Further, the oil supplementing device 30 is an oil supplementing tank, the oil supplementing tank is a hollow box body, the oil supplementing tank is used for containing heat conduction oil, and a liquid level meter is further arranged on the outer wall of the oil supplementing tank and used for observing the oil level inside the oil supplementing tank.

Further, an oil supply pipe 31 is arranged between the oil supply tank and the heat exchange tank 21, and a control valve is arranged on the oil supply pipe 31. Used for controlling the opening and closing of the heat conducting oil entering the heat exchange box 21 in the oil supplementing box.

Further, the inlet and the outlet of the heat exchange tube set 22 are located outside the heat exchange box 21, the inlet of the heat exchange tube set 22 is connected with the oil compensating tube 31, and the outlet of the heat exchange tube set 22 is provided with a temperature detector. And the device is used for detecting the temperature of the heat conduction oil after heat exchange.

Further, an inlet pipeline 25 and an outlet pipeline 26 are further arranged on the side wall of the heat exchange box 21 to be respectively connected with a connecting pipeline and an auxiliary emptying pipe, the heat exchange pipe group is an S-shaped oil pipe coiled in the heat exchange box and comprises a first circulation section 221, a second circulation section 222 and a third circulation section 223 which are connected end to end in a turn-back manner in sequence, the end of the first circulation section 221 is located outside the heat exchange box, the end of the third circulation section 223 is located outside the heat exchange box, a first isolation wall 214 is further arranged between the first circulation section 221 and the second circulation section 222, a second isolation wall 215 is further arranged between the second circulation section 222 and the third circulation section 223, one end of the first isolation wall 214 is connected with the side wall of the heat exchange box 21, the other end of the first isolation wall extends inwards, one end of the second isolation wall 215 is connected with the other side wall of the heat exchange box 21, and the other end of the second isolation wall. The first and

second partition walls

214 and 215 are provided for the purpose of enabling the entering flame or flue gas to flow in an S shape in the same direction as the heat exchange tube group in advance, prolonging the flowing time and distance thereof, and prolonging the contact time and distance thereof with the heat exchange tube group, so as to avoid the problem of the contact time period between the entering heat exchange box body and the upward flowing of the entering heat exchange box body and the heat exchange tube group.

The embodiment of the utility model provides a module or unit in the device can merge, divide and delete according to actual need.

The above disclosure is only illustrative of the preferred embodiments of the present invention, which should not be taken as limiting the scope of the invention, but rather the invention can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It will be understood by those skilled in the art that all or part of the above-described embodiments may be implemented and equivalents thereof may be made to the claims of the present invention while remaining within the scope of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A heat conduction oil heat exchange type electric calcining furnace is characterized in that: comprises a calcining furnace, a heat exchange device and an oil supplementing device, wherein the calcining furnace comprises a furnace body and a chimney arranged at the top of the furnace body, the heat exchange device is arranged at the top of the furnace body, the oil supplementing device is arranged above the heat exchange device, and is communicated with a heat exchange device, the top of the chimney is a flue gas exhaust port, the heat exchange device comprises a heat exchange box and a heat exchange tube group, the heat exchange box is a hollow sealed cavity, establish the replacement heat pipe group in heat exchange incasement portion, heat exchange incasement portion is used for letting in the conduction oil, sets up the connecting tube between chimney bottom and the heat exchange case, still sets up supplementary evacuation pipe at the heat exchange roof portion, and the top of supplementary evacuation pipe is opened, and the bottom communicates with heat exchange incasement portion, still sets up first flashboard bottom the chimney, and the height that highly is higher than the connecting tube of first flashboard sets up the second flashboard on the connecting tube, sets up the third flashboard on supplementary evacuation pipe.

2. The heat transfer oil heat exchange type electric roaster of claim 1, wherein: the auxiliary emptying pipe and the connecting pipeline are positioned at two opposite ends of the box body.

3. The heat transfer oil heat exchange type electric roaster of claim 1, wherein: the side wall of the heat exchange box is sequentially provided with a steel plate layer, an isolation layer and a heat insulation layer from outside to inside.

4. The heat transfer oil heat exchange type electric roaster of claim 1, wherein: the oil supplementing device is an oil supplementing tank which is a hollow box body and is used for containing heat conduction oil, and a liquid level meter is arranged on the outer wall of the oil supplementing tank and used for observing the oil level inside the oil supplementing tank.

5. The heat transfer oil heat exchange type electric roaster of claim 4, wherein: an oil supplementing pipe is arranged between the oil supplementing tank and the heat exchange tank, and a control valve is arranged on the oil supplementing pipe.

6. The heat transfer oil heat exchange type electric roaster of claim 1, wherein: the inlet and the outlet of the heat exchange tube set are positioned outside the box body, the inlet of the heat exchange tube set is connected with the oil supplementing tube, and the outlet of the heat exchange tube set is provided with a temperature detector.

7. The heat transfer oil heat exchange type electric roaster of claim 1, wherein: the heat exchange tube set is an S-shaped oil tube which is arranged in the heat exchange box in a coiled mode and comprises a first circulation section, a second circulation section and a third circulation section which are sequentially connected in a turn-back mode end to end, the end portion of the first circulation section is located outside the heat exchange box, the end portion of the third circulation section is located outside the heat exchange box, a first isolation wall is arranged between the first circulation section and the second circulation section, a second isolation wall is arranged between the second circulation section and the third circulation section, one end of the first isolation wall is connected with the side wall of the heat exchanger, the other end of the first isolation wall extends towards the inside, one end of the second isolation wall is connected with the other side wall of the heat exchanger, and the other end of the second isolation wall extends towards the inside.