Thermal treatment protection device

Abstract

The utility model provides a heat treatment protection device. The heat treatment protection device comprises a heat treatment furnace, a heat preservation refractory brick and an arc-shaped tray, the distance between the lowest point of the arc-shaped face of the heat preservation refractory brick and the bottom wall of the heat treatment furnace is larger than or equal to 500 mm, and then the distance between the arc-shaped tray and the bottom wall of the heat treatment furnace is at least 500 mm, so that an enough distance exists between a tank body and a flame opening in the heat treatment process, and the over-burning phenomenon caused by the fact that flames directly irradiate the tank body is avoided; meanwhile, overburning caused by direct heating of the tank body by heating flames can be avoided due to the blocking effect of the insulating refractory bricks; due to the arrangement of the heat preservation refractory bricks, heat absorption of the arc-shaped trays can be reduced, the over-burning phenomenon of the tank body is further avoided, and meanwhile the heat preservation refractory bricks reduce ineffective heating and achieve the energy-saving effect.

Description

Technical Field

[0001] The utility model relates to the technical field of heat treatment, in particular to a heat treatment protection device. Background Art

[0002] There is a key process annealing heat treatment in the manufacturing process of pressure vessels. The pressure vessel tank body is heated to 600 degrees Celsius and then kept warm to eliminate welding stress. At present, the existing pressure vessel tank body is placed on the support saddle during heating. The distance between the pressure vessel tank body and the heat treatment furnace is only 250mm. When the tank body is thin (below 11MM), heating annealing is performed. When the current support saddle is used to support the tank body, the tank body will be deformed and overburned and oxidized. Once deformation occurs, it will cause a huge workload for subsequent repairs, and in severe cases, it may even cause the tank body to be scrapped.

[0003] Based on the defects existing in the current gas heat treatment furnace when performing annealing heat treatment on the pressure vessel tank body, it is necessary to make improvements thereon. Utility Model Content

[0004] In view of this, the utility model proposes a heat treatment protection device to solve the technical problems existing in the prior art.

[0005] In a first aspect, the utility model provides a heat treatment protection device, comprising:

[0006] A heat treatment furnace having a hollow interior;

[0007] Insulating refractory bricks are located in the heat treatment furnace, and the end faces of the insulating refractory bricks away from the bottom wall of the heat treatment furnace are concave toward the bottom wall of the heat treatment furnace to form an arc-shaped surface;

[0008] An arc-shaped tray, which fits in the arc-shaped surface, and is used to support the can body to be processed;

[0009] Wherein, the distance between the lowest point of the arc surface and the bottom wall of the heat treatment furnace is greater than or equal to 500 mm.

[0010] Preferably, the corresponding central angles of the arc surface and the arc tray are 120-150°.

[0011] Preferably, a roller is further provided at the bottom of the thermal insulation refractory brick, and the roller is placed on the bottom wall of the heat treatment furnace.

[0012] Preferably, it also includes:

[0013] A first sleeve, which is embedded in the thermal insulation refractory brick, and the first sleeve passes through the bottom of the thermal insulation refractory brick;

[0014] A sliding rod, which is located in the first sleeve and can move up and down along the inner wall of the first sleeve;

[0015] A fixed block, located at the lower end of the slide bar;

[0016] The fixing block and the bottom wall of the heat treatment furnace are provided with screw holes at corresponding positions. When the sliding rod moves and drives the fixing block to contact the bottom wall of the heat treatment furnace, a screw connection piece is screwed into the screw hole to fix the fixing block and the bottom wall of the heat treatment furnace.

[0017] Preferably, it further comprises an elastic member, wherein the elastic member is fixed in the first sleeve and located above the sliding rod, and the upper end of the sliding rod is fixed to the elastic member.

[0018] Preferably, a second sleeve is symmetrically provided on both sides of the thermal insulation refractory brick;

[0019] The second sleeve passes through the thermal insulation refractory brick;

[0020] The arc-shaped tray is provided with a through hole at a position corresponding to the second sleeve;

[0021] A lifting block is provided in the through hole, and the lifting block is adapted to the through hole;

[0022] The lower end of the lifting block extends into the chamber of the second sleeve and can move up and down along the inner wall of the second sleeve;

[0023] The lower end of the lifting block is connected to the free end of the cylinder.

[0024] Preferably, the chamber in the second sleeve includes a first chamber and a second chamber connected up and down, wherein the diameter of the first chamber is greater than the diameter of the second chamber;

[0025] The lower end of the lifting block first extends into the first chamber and then extends into the second chamber, and the lower end of the lifting block is respectively adapted to the first chamber and the second chamber;

[0026] The end of the lifting block located in the second chamber is connected to the free end of the cylinder.

[0027] Preferably, the cylinder is located outside the thermal insulation refractory bricks, the free end of the cylinder is connected to a lifting rod, the upper end of the lifting rod extends into the second chamber and is connected to the lifting block.

[0028] Preferably, the diameter of the first chamber is 1.1 to 1.3 times the diameter of the second chamber.

[0029] Preferably, the top of the first sleeve is closed, the upper end of the elastic member is connected to the top of the first sleeve, and the lower end is fixed to the sliding rod.

[0030] The heat treatment protection device of the utility model has the following beneficial effects compared with the prior art:

[0031] 1. The heat treatment protection device of the utility model comprises a heat treatment furnace, heat-insulating refractory bricks, and an arc-shaped tray; by making the distance between the lowest point of the arc-shaped surface of the heat-insulating refractory bricks and the bottom wall of the heat treatment furnace greater than or equal to 500 mm, and then making the distance between the arc-shaped tray and the bottom wall of the heat treatment furnace at least 500 mm, so that the tank body is sufficiently far away from the flame mouth during the heat treatment process, avoiding the flame directly hitting the tank body and causing overburning; at the same time, due to the blocking effect of the heat-insulating refractory bricks, it can be avoided that the heating flame directly heats the tank body and causes overburning; and the setting of the heat-insulating refractory bricks can reduce the heat absorption of the arc-shaped tray, further avoiding the overburning of the tank body, and at the same time, the heat-insulating refractory bricks reduce ineffective heating and play a role in energy saving;

[0032] 2. The heat treatment protection device of the utility model is provided with a first sleeve in the heat-insulating refractory brick, and the slide bar moves up and down in the first sleeve. When the slide bar moves downward, it drives the fixed block to move downward. When the slide bar moves, it drives the fixed block to move to conflict with the bottom wall of the heat treatment furnace. The screw connection piece is screwed into the screw hole to fix the fixed block and the bottom wall of the heat treatment furnace, thereby fixing the heat-insulating refractory brick in the heat treatment furnace;

[0033] 3. In the heat treatment protection device of the utility model, a through hole is provided at the arc-shaped tray corresponding to the second sleeve, a lifting block is provided in the through hole, the lower end of the lifting block extends into the chamber of the second sleeve and is connected to the free end of the cylinder. After the heat treatment is completed, by starting the cylinder, the free end of the cylinder drives the lifting block to move upward, thereby pushing the tank body to move upward, thereby separating the tank body from the arc-shaped tray, making it easy to take out the tank body. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following is a brief introduction to the drawings required for the embodiments or the prior art descriptions. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0035] Figure 1 This is a schematic diagram of the structure of a heat treatment protection device in one embodiment of the utility model;

[0036] Figure 2 It is a schematic diagram of the distance between the lowest point of the arc-shaped surface and the bottom wall of the heat treatment furnace in the utility model;

[0037] Figure 3 It is a schematic diagram of the corresponding central angles of the arc surface and the arc tray in the utility model;

[0038] Figure 4 This is a schematic structural diagram of a heat treatment protection device in another embodiment of the utility model;

[0039] Figure 5 This is a schematic diagram of the structure of the first sleeve, the sliding rod and the fixed block connected to each other in the utility model;

[0040] Figure 6 It is a structural schematic diagram of the second sleeve of the utility model;

[0041] Figure 7 This is a schematic diagram of the structure of the second sleeve, the lifting block and the cylinder connected to the utility model;

[0042] Figure 8 It is a structural schematic diagram of the jacking block of the utility model;

[0043] Fig. 9 This is a schematic structural diagram of a heat treatment protection device in another embodiment of the present utility model. DETAILED DESCRIPTION

[0044] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0045] Those skilled in the art will appreciate that, unless expressly stated, the singular forms "a", "an", "said" and "the" used herein may also include plural forms. It should be further understood that the term "comprising" used in the specification of the present application refers to the presence of the features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or groups thereof. It should be understood that when we refer to an element as being "connected" to another element, it may be directly connected to the other element, or there may be intermediate elements. In addition, the "connection" used here may include wireless connections. The term "and / or" used here includes all or any unit and all combinations of one or more associated listed items.

[0046] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0047] It should be understood that although the terms first, second, etc. may be used in the present disclosure to describe various information, such information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.

[0048] The following will be combined with the implementation of the utility model to clearly and completely describe the technical solutions in the implementation of the utility model. Obviously, the described implementation is only a part of the implementation of the utility model, not all of the implementations. Based on the implementation of the utility model, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0049] The utility model provides a heat treatment protection device, such as Figures 1 to 9 As shown, including:

[0050] A heat treatment furnace 1, the interior of which is hollow;

[0051] The heat-insulating refractory brick 2 is located in the heat treatment furnace 1, and the end surface of the heat-insulating refractory brick 2 away from the bottom wall of the heat treatment furnace 1 is concave toward the bottom wall of the heat treatment furnace to form an arc surface 21;

[0052] The arc-shaped tray 3 is fitted in the arc-shaped surface 21, and the arc-shaped tray 3 is used to support the can body 4 to be processed;

[0053] The distance between the lowest point of the arc surface 21 and the bottom wall of the heat treatment furnace is greater than or equal to 500 mm.

[0054] The heat treatment protection device of the utility model comprises a heat treatment furnace 1, a heat-insulating refractory brick 2, and an arc-shaped tray 3; the end surface of the heat-insulating refractory brick 2 away from the bottom wall of the heat treatment furnace 1 is recessed toward the bottom wall of the heat treatment furnace to form an arc-shaped surface 21, that is, the upper end surface of the heat-insulating refractory brick 2 is recessed downward to form the arc-shaped surface 21; the arc-shaped tray 3 is fitted in the arc-shaped surface 21, and the arc length of the arc-shaped tray 3 is the same as the arc length of the arc-shaped surface 21. The arc-shaped tray 3 is used to support a tank body 4 to be treated, and the tank body 4 is cylindrical, and the lowest point of the arc-shaped surface 21 The distance between the arc-shaped tray 3 and the bottom wall of the heat treatment furnace is greater than or equal to 500mm; the utility model makes the distance between the lowest point of the arc-shaped surface 21 of the heat-insulating refractory brick 2 and the bottom wall of the heat treatment furnace greater than or equal to 500mm, thereby making the distance between the arc-shaped tray 3 and the bottom wall of the heat treatment furnace 1 at least 500mm, so that the tank body 4 is at a sufficient distance from the flame mouth during the heat treatment process to avoid the flame directly hitting the tank body and causing overburning. At the same time, the blocking effect of the heat-insulating refractory brick 2 can prevent the heating flame from directly heating the tank body and causing overburning. The setting of the heat-insulating refractory brick 2 can reduce the heat absorption of the arc-shaped tray 3, further avoiding the overburning of the tank body, and at the same time, the heat-insulating refractory brick 2 reduces ineffective heating and plays an energy-saving role.

[0055] Further, refer to Figure 2 As shown, during the heat treatment in the gas heat treatment furnace 1, the heating flame is as follows Figure 2 As shown in 11, it is obvious that the heat-insulating refractory bricks 2 block the heating flame 11; the distance between the lowest point of the arc surface 21 and the bottom wall of the heat treatment furnace is a, a is greater than or equal to 500mm, preferably, a is 500-600mm.

[0056] In some embodiments, the corresponding central angles of the arc surface 21 and the arc tray 3 are 120-150°. Figure 3 As shown, the corresponding central angle of the arc surface 21 and the arc tray 3 is b, b is 120-150°, preferably 120°, and the arc tray 3 supports the tank body 4 to be processed to avoid local stiffness failure and deformation caused by high tank body temperature and low yield strength during heat treatment of the thin-walled tank body 4 to be processed.

[0057] In some embodiments, the arc-shaped tray 3 is made of metal material, such as metal iron, stainless steel, etc., and the thickness of the arc-shaped tray 3 is 80-120 mm.

[0058] In some embodiments, the thermal insulation refractory brick 2 is made by firing conventional thermal insulation refractory materials, for example, it is prepared according to the authorized patent CN101774817B - diatomite ultra-microporous high-strength thermal insulation refractory brick and its manufacturing method.

[0059] In some embodiments, a roller 5 is further provided at the bottom of the heat-insulating refractory brick 2, and the roller 5 is placed on the bottom wall of the heat treatment furnace.

[0060] In some embodiments, it also includes:

[0061] A first sleeve 6, which is embedded in the thermal insulation refractory brick 2, and the first sleeve 6 passes through the bottom of the thermal insulation refractory brick 2;

[0062] A slide bar 61, which is located in the first sleeve 6 and can move up and down along the inner wall of the first sleeve 6;

[0063] A fixed block 62, which is located at the lower end of the slide bar 61;

[0064] Screw holes 63 are provided at corresponding positions of the fixing block 62 and the bottom wall of the heat treatment furnace. When the slide rod 61 moves and drives the fixing block 62 to contact the bottom wall of the heat treatment furnace, a screw connection 64 is screwed into the screw hole 63 to fix the fixing block 62 and the bottom wall of the heat treatment furnace.

[0065] In the above embodiment, since the roller 5 is provided at the bottom of the insulating refractory brick 2, the insulating refractory brick 2 will move along the bottom wall of the heat treatment furnace, causing the insulating refractory brick 2 to be unstable. In order to solve this problem, a first sleeve 6 is provided in the insulating refractory brick 2, and the slide bar 61 moves up and down in the first sleeve 6. When the slide bar 61 moves downward and drives the fixed block 62 to move downward, when the slide bar 61 moves, it drives the fixed block 62 to move until it conflicts with the bottom wall of the heat treatment furnace, a screw connection 64 is screwed into the screw hole 63 to fix the fixed block 62 and the bottom wall of the heat treatment furnace, thereby fixing the insulating refractory brick 2 in the heat treatment furnace; specifically, the screw connection 64 can be a bolt, a screw, etc.

[0066] In some embodiments, an elastic member 65 is also included. The elastic member 65 is fixed in the first sleeve 6 and is located above the slide rod 61. The upper end of the slide rod 61 is fixed to the elastic member 65. By arranging the elastic member 65 in the first sleeve 6, when the heat treatment is completed, the screw connection 64 can be removed. Under the action of the restoring force of the elastic member 65, the slide rod 61 is driven to move upward, and then the fixed block 62 is moved upward, so that the fixed block 62 and the heat treatment furnace are separated.

[0067] In some embodiments, a second sleeve 7 is symmetrically provided on both sides of the thermal insulation refractory brick 2;

[0068] The second sleeve 7 penetrates the heat-insulating refractory brick 2;

[0069] The arc-shaped tray 3 is provided with a through hole corresponding to the second sleeve 7;

[0070] A lifting block 8 is provided in the through hole, and the lifting block 8 is adapted to the through hole;

[0071] The lower end of the lifting block 8 extends into the chamber of the second sleeve 7 and can move up and down along the inner wall of the second sleeve;

[0072] The lower end of the lifting block 8 is connected to the free end of the cylinder 9.

[0073] Specifically, in the above embodiment, a through hole is provided at the arc-shaped tray 3 corresponding to the second sleeve 7, and a lifting block 8 is provided in the through hole. The lower end of the lifting block 8 extends into the chamber of the second sleeve 7 and is connected to the free end of the cylinder 9. The free end of the cylinder 9 is the movable end of the cylinder 9. After the heat treatment is completed, by starting the cylinder 9, the free end of the cylinder 9 drives the lifting block 8 to move upward, thereby pushing the tank body 4 to move upward, thereby separating the tank body 4 from the arc-shaped tray 3, and facilitating the removal of the tank body 4.

[0074] In some embodiments, the chamber in the second sleeve 7 includes a first chamber 71 and a second chamber 72 that are connected to each other from top to bottom, wherein the diameter of the first chamber 71 is greater than the diameter of the second chamber 72;

[0075] The lower end of the lifting block 8 first extends into the first chamber 71 and then extends into the second chamber 72. The lower end of the lifting block 8 is respectively adapted to the first chamber 71 and the second chamber 72.

[0076] The end of the lifting block 8 located in the second chamber 72 is connected to the free end of the cylinder 9 .

[0077] In the above embodiment, the lower end of the lifting block 8 is respectively adapted to the first chamber 71 and the second chamber 72. Specifically, the lower end of the lifting block 8 forms a first part 81 and a second part 82 adapted to the first chamber 71 and the second chamber 72, respectively. The first part 81 can move up and down along the wall of the first chamber 71, and the second part 82 can move up and down along the wall of the second chamber 72.

[0078] In some embodiments, the cylinder 9 is located outside the thermal insulation refractory brick 2 , and a lifting rod 91 is connected to the free end of the cylinder 9 . The upper end of the lifting rod 91 extends into the second chamber 72 and is connected to the lifting block 8 .

[0079] In the above embodiment, the free end of the cylinder 9 is connected to a lifting rod 91, the upper end of the lifting rod 91 extends into the second chamber 72 and is connected to the lifting block 8. Specifically, the lifting rod 91 is connected to the second part 82 of the lifting block. The upward movement of the free end of the cylinder 9 drives the lifting rod 91 to move upward, and then the lifting block 8 moves upward, thereby pushing the tank body 4 to move upward; when the tank body 4 is taken out, the free end of the cylinder 9 moves downward, and finally drives the lifting block 8 to return to its original state (that is, located in the through hole of the arc tray 3).

[0080] In some embodiments, the diameter of the first chamber 71 is 1.1 to 1.3 times the diameter of the second chamber 72 .

[0081] In some embodiments, the top of the first sleeve 6 is closed, the upper end of the elastic member 65 is connected to the top of the first sleeve 6 , and the lower end is fixed to the sliding rod 61 .

[0082] It can be understood that the arc tray 3, the first sleeve 6, the slide rod 61, the fixed block 62, the screw connection 64, the elastic member 65, the second sleeve 7, the lifting block 8, the cylinder 9, the lifting rod 91 and other components in the utility model are all made of high-temperature resistant metal materials, such as metal iron, stainless steel, etc., to meet the temperature requirements of the heat treatment process.

[0083] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A heat treatment protection device, characterized in that: include: A heat treatment furnace, the interior of which is hollow; Insulating refractory bricks are located in the heat treatment furnace, and the end faces of the insulating refractory bricks away from the bottom wall of the heat treatment furnace are concave toward the bottom wall of the heat treatment furnace to form an arc-shaped surface; An arc-shaped tray, which fits in the arc-shaped surface, and is used to support the can body to be processed; Wherein, the distance between the lowest point of the arc surface and the bottom wall of the heat treatment furnace is greater than or equal to 500 mm.

2. The heat treatment protection device according to claim 1, characterized in that: The corresponding central angles of the arc surface and the arc tray are 120-150°.

3. The heat treatment protection device according to claim 1, characterized in that: The bottom of the heat-insulating refractory brick is also provided with a roller, and the roller is placed on the bottom wall of the heat treatment furnace.

4. The heat treatment protection device according to claim 3, characterized in that: Also includes: A first sleeve, which is embedded in the thermal insulation refractory brick, and the first sleeve passes through the bottom of the thermal insulation refractory brick; A sliding rod, which is located in the first sleeve and can move up and down along the inner wall of the first sleeve; A fixed block, located at the lower end of the slide bar; The fixing block and the bottom wall of the heat treatment furnace are provided with screw holes at corresponding positions. When the sliding rod moves and drives the fixing block to contact the bottom wall of the heat treatment furnace, a screw connection piece is screwed into the screw hole to fix the fixing block and the bottom wall of the heat treatment furnace.

5. The heat treatment protection device according to claim 4, characterized in that: It also includes an elastic member, which is fixed in the first sleeve and located above the sliding rod, and the upper end of the sliding rod is fixed to the elastic member.

6. The heat treatment protection device according to claim 1, characterized in that: The second sleeves are symmetrically arranged on both sides of the thermal insulation refractory bricks; The second sleeve passes through the thermal insulation refractory brick; The arc-shaped tray is provided with a through hole at a position corresponding to the second sleeve; A lifting block is provided in the through hole, and the lifting block is adapted to the through hole; The lower end of the lifting block extends into the chamber of the second sleeve and can move up and down along the inner wall of the second sleeve; The lower end of the lifting block is connected to the free end of the cylinder.

7. The heat treatment protection device according to claim 6, characterized in that: The chamber in the second sleeve includes a first chamber and a second chamber which are connected to each other from top to bottom, wherein the diameter of the first chamber is greater than the diameter of the second chamber; The lower end of the lifting block first extends into the first chamber and then extends into the second chamber, and the lower end of the lifting block is respectively adapted to the first chamber and the second chamber; The end of the lifting block located in the second chamber is connected to the free end of the cylinder.

8. The heat treatment protection device according to claim 7, characterized in that: The cylinder is located outside the thermal insulation refractory bricks, the free end of the cylinder is connected to a lifting rod, the upper end of the lifting rod extends into the second chamber and is connected to the lifting block.

9. The heat treatment protection device according to claim 7, characterized in that: The diameter of the first chamber is 1.1 to 1.3 times the diameter of the second chamber.

10. The heat treatment protection device according to claim 5, characterized in that: The top of the first sleeve is closed, the upper end of the elastic member is connected to the top of the first sleeve, and the lower end is fixed to the sliding rod.

Images