Heat treatment compensation method and thermal compensator

Abstract

The present invention belongs to the technical field of heat treatment, and particularly relates to a compensation method for heat treatment and a thermal compensator. This compensation method for heat treatment is used for displacement compensation of the rigid connection part between two adjacent thermal expansion bodies. Two relatively movable connection parts are arranged between the rigid connection parts. Each connection part corresponds to a thermal expansion body and moves with the thermal expansion and contraction of the thermal expansion body. The two connection parts are sealed by liquid. Using this method to compensate the material passage between two adjacent pyrolyzers, that is, replacing the traditional bellows thermal compensator with this thermal compensator, can make the distance between adjacent pyrolyzers not restricted by the material and height of the thermal compensator.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat treatment, and particularly relates to a compensation method for heat treatment and a thermal compensator. Background Art

[0002] It is a characteristic of an object to expand when heated. The working temperature of a pyrolysis carbonization furnace is about 500 - 1000 °C. To compensate for the displacement caused by its thermal expansion and contraction, a thermal compensator is a necessary component. For example, in the double-furnace pyrolysis furnace disclosed in Chinese Patent Document CN107973512A, because the working temperatures of the upper furnace body and the lower furnace body are different, resulting in different thermal deformation amounts of the upper furnace body and the lower furnace body, a thermal compensator generally must be provided on the material falling channel between the upper furnace body and the lower furnace body. In the prior art, a flange-type bellows compensator is a commonly used thermal compensator, and the flange-type bellows compensator is used in the double-furnace pyrolysis furnace disclosed in Chinese Patent Document CN107973512A. However, the compensation ability of the bellows compensator is affected not only by the properties of its material but also by the height of the bellows. In the comparison standard of the bellows compensation amount, the compensation amount increases as the height of the bellows increases. For the double-furnace pyrolysis furnace disclosed in Chinese Patent Document CN107973512A, in order to achieve a compensation amount that meets the requirements, there are requirements for the distance between the upper furnace body and the lower furnace body. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a compensation method for heat treatment and a thermal compensator, whose compensation effect is not restricted by the material and height of the thermal compensator.

[0004] To achieve the above purpose, the technical solution of the present invention is as follows:

[0005] A compensation method for heat treatment, which is used for compensating the displacement of a rigid connection part between two adjacent thermal expansion bodies. Two relatively movable connection parts are arranged between the rigid connection parts. Each connection part corresponds to a thermal expansion body and moves with the thermal expansion and contraction of the thermal expansion body. The two connection parts are sealed by liquid.

[0006] As an improvement, the two relatively movable connection parts are sleeved.

[0007] As a further improvement, a liquid storage is provided around one connection part, and a sealing plate is provided around the other connection part. The sealing plate is immersed in the liquid storage to achieve the sealing between the two connection parts.

[0008] As a still further improvement, the thermal expansion body is a pyrolysis furnace, and the rigid connection part is a material channel connecting adjacent pyrolysis furnaces.

[0009] The thermal compensator described in the present invention is used for compensating the displacement of the rigid connection part between two adjacent thermal expansion bodies, and includes two relatively movable connection parts. Each connection part corresponds to one thermal expansion body, and the two connection parts are sealed by liquid.

[0010] As an improvement, the two relatively movable connection parts are sleeved.

[0011] As an improvement, one end of a connection part has a reduced diameter part, and the reduced diameter part is partially located inside the other connection part.

[0012] As a further improvement, the two relatively movable connection parts are respectively an upper connection part and a lower connection part. The liquid storage is fixed around the lower connection part. The liquid storage is an open container with an upward opening, and the sealing plate is located around the upper connection part.

[0013] As an alternative improvement, the two relatively movable connection parts are respectively an upper connection part and a lower connection part. The liquid storage is fixed around the upper connection part. The liquid storage is an open container with an upward opening, and the sealing plate is located around the lower connection part. An inward buckling edge is provided around the sealing plate, and the inward buckling edge is immersed in the liquid storage to achieve the seal between the two connection parts.

[0014] As a further improvement, the thermal expansion body is a pyrolysis furnace, and the rigid connection part is a material channel connected between adjacent pyrolysis furnaces.

[0015] The beneficial effect of the present invention is that the thermal compensator composed of two relatively movable connection parts is sealed between the two connection parts by liquid. Its compensation ability does not depend on the materials of the two connection parts, nor is it related to the height of the thermal compensator, but only depends on the relative movement space between the two connection parts. For the juxtaposed pyrolysis furnaces, the size of the compensation ability of this thermal compensator has nothing to do with the distance between adjacent pyrolysis furnaces, so that the structure of the pyrolysis furnace group can be more compact. In addition, for the pyrolysis furnace group used for pyrolyzing oil sludge, municipal sludge, etc., soil powder will slowly enter the liquid storage, making the sealing effect better. Description of the Drawings

[0016] Figure 1 It is a schematic structural diagram of Embodiment 1 of the present invention;

[0017] Figure 2 It is a cross-sectional view of Embodiment 1 of the present invention;

[0018] Figure 3 It is a schematic structural diagram of a pyrolysis furnace group using this thermal compensator. The shaded part in the figure represents the pyrolysis furnace, and the dotted line with an arrow represents the movement route of the material in the pyrolysis furnace group;

[0019] Figure 4 It is a cross-sectional view of Embodiment 2 of the present invention.

[0020] In the figure: 1. Upper connecting part; 2. Lower connecting part; 3. Liquid storage; 4. Sealing plate; 5. Inner buckling edge; 6. Pyrolysis furnace; 7. Material channel. Specific implementation mode

[0021] Embodiment 1

[0022] As Figure 1 、 Figure 2 shown, the thermal compensator of the present invention includes two relatively movable connecting parts, and the two relatively movable connecting parts are sleeved. The connecting parts can be divided into an upper connecting part 1 and a lower connecting part 2. One end of the upper connecting part 1 extends into the lower connecting part 2, and the end of the upper connecting part 1 has a reduced diameter part, and part of the reduced diameter part is located inside the lower connecting part 2 to increase the freedom of lateral movement of the two connecting parts. A liquid storage 3 is arranged around the lower connecting part 2, the liquid storage 3 is an open container with an upward opening, a sealing plate 4 is arranged around the upper connecting part 1, and the sealing plate 4 is immersed in the liquid storage 3 to achieve sealing between the two connecting parts.

[0023] The compensation ability of this thermal compensator depends on the freedom of movement of the sealing plate 4 in the liquid storage 3 and the freedom of movement of one end of the upper connecting part 1 in the connecting part 2.

[0024] This thermal compensator can be used for displacement compensation of the rigid connecting part between two adjacent thermal expansion bodies, such as compensating the material channel 7 between two adjacent pyrolysis furnaces 6, that is, replacing the traditional corrugated pipe thermal compensator with this thermal compensator. As Figure 3 shown, the pyrolysis furnace 6 adopts jacket heating, and the distance between adjacent pyrolysis furnaces 6 can be unrestricted by the material and height of the thermal compensator.

[0025] Embodiment 2

[0026] As Figure 4 shown, this thermal compensator includes two relatively movable connecting parts, and the two connecting parts are sleeved. The two connecting parts are the upper connecting part 1 and the lower connecting part 2. One end of the upper connecting part 1 extends into the lower connecting part 2, and the end of the upper connecting part 1 has a reduced diameter part, and part of the reduced diameter part is located inside the lower connecting part 2 to increase the freedom of lateral movement of the two connecting parts. A liquid storage 3 is arranged around the upper connecting part 1, the liquid storage 3 is an open container with an upward opening, a sealing plate 4 is arranged around the lower connecting part 2, and an inner buckling edge 5 is arranged around the sealing plate 4, and the inner buckling edge 5 is immersed in the liquid storage 3 to achieve sealing between the two connecting parts.

Claims

1. A compensation method for heat treatment, used for displacement compensation of the material passage between two adjacent pyrolyzers. The material moves from the upper part to the lower part of the material passage, while the pyrolysis gas moves from the lower part to the upper part of the material passage. Characterized in that: An upper connecting part is arranged at the bottom of the material passage corresponding to the upper-layer pyrolyzer, and a lower connecting part is arranged at the top of the material passage corresponding to the lower-layer pyrolyzer. The two connecting parts are sleeved with each other and can generate relative lateral movement along with the thermal expansion and contraction of the pyrolyzer. A liquid storage containing a sealing liquid is arranged around the lower connecting part. The liquid storage is an open container with an upward opening. A sealing plate is arranged around the upper connecting part. The sealing plate faces the material passage corresponding to the lower-layer pyrolyzer, and the bottom of the sealing plate is immersed in the sealing liquid to achieve sealing between the two connecting parts.

2. A compensation method for heat treatment, used for displacement compensation of the material passage between two adjacent pyrolyzers. The material moves from the upper part to the lower part of the material passage, while the pyrolysis gas moves from the lower part to the upper part of the material passage. Characterized in that: An upper connecting part is arranged at the bottom of the material passage corresponding to the upper-layer pyrolyzer, and a lower connecting part is arranged at the top of the material passage corresponding to the lower-layer pyrolyzer. The two connecting parts are sleeved with each other and can generate relative lateral movement along with the thermal expansion and contraction of the pyrolyzer. A liquid storage containing a sealing liquid is formed around the upper connecting part. The liquid storage is an open container with an upward opening. The bottom of the liquid storage faces the material passage corresponding to the lower-layer pyrolyzer. A sealing plate is arranged around the lower connecting part, and an inward buckling edge is arranged around the sealing plate. The inward buckling edge is immersed in the liquid storage to achieve sealing between the two connecting parts.

3. The compensation method for heat treatment according to claim 1 or 2, Characterized in that: One end of the upper connecting part extends into the lower connecting part, and the end of the upper connecting part has a reduced diameter part. The reduced diameter part is partially located inside the lower connecting part to increase the freedom degree of lateral movement of the two connecting parts.

4. A thermal compensator, used for displacement compensation of the material passage between two adjacent pyrolyzers, Characterized in that: Comprising An upper connecting part, arranged at the bottom of the material passage corresponding to the upper-layer pyrolyzer; A lower connecting part, arranged at the top of the material passage corresponding to the lower-layer pyrolyzer; the two connecting parts are sleeved with each other and can generate relative lateral movement along with the thermal expansion and contraction of the pyrolyzer; A liquid storage, arranged around the lower connecting part, is an open container with an upward opening and contains a sealing liquid; A sealing plate, arranged around the upper connecting part, faces the material passage corresponding to the lower-layer pyrolyzer, and the bottom of the sealing plate is immersed in the sealing liquid to achieve sealing between the two connecting parts.

5. A thermal compensator, used for displacement compensation of the material passage between two adjacent pyrolyzers, Characterized in that: Comprising An upper connecting part, arranged at the bottom of the material passage corresponding to the upper-layer pyrolyzer; A lower connecting part, arranged at the top of the material passage corresponding to the lower-layer pyrolyzer; the two connecting parts are sleeved with each other and can generate relative lateral movement along with the thermal expansion and contraction of the pyrolyzer; A liquid storage, arranged around the upper connecting part, is an open container with an upward opening and contains a sealing liquid. The bottom of the liquid storage faces the material passage corresponding to the lower-layer pyrolyzer; A sealing plate is provided around the lower connecting portion. An inwardly buckled edge is provided around the sealing plate, and the inwardly buckled edge is immersed in the storage liquid to achieve sealing between the two connecting portions.

6. The thermal compensator according to claim 4 or 5, characterized in that: One end of the upper connecting portion extends into the lower connecting portion, and the end portion of the upper connecting portion has a necked-down portion, and the necked-down portion is partially located inside the lower connecting portion.

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