Solid solution treatment device for turbine blade

Abstract

The utility model discloses a solid solution treatment device for turbine blades, which belongs to part production and comprises a continuous cooling water tank, a conveying belt comprises a first horizontal conveying section, a descending conveying section, a second horizontal conveying section and an ascending conveying section, the first horizontal conveying section is positioned in a furnace chamber of a continuous furnace, and the descending conveying section is positioned in the furnace chamber of the continuous furnace. The second horizontal conveying section is located below the liquid level of the continuous cooling water pond, the ascending conveying section is located between the first horizontal conveying section and the second horizontal conveying section, and one end of the ascending conveying section is connected with the second horizontal conveying section into a whole. The quality of turbine blades treated by the device is more uniform, the formation of a large amount of smoke caused by concentrated cooling is avoided, and the working space is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to turbine blade production, and more particularly, a turbine blade solid solution treatment device. BACKGROUND

[0002] The production process of turbine blades is relatively complex, mainly including: investment casting (manufacturing blades through investment casting process), precision machining (using numerical control machine tool to carry out precision machining on blade blank to ensure that the size and shape meet the design requirements), heat treatment, surface treatment, assembly, etc.

[0003] Among them, the heat treatment includes solid solution treatment and aging treatment, and for the production of nickel-based superalloy blades, the solid solution treatment includes heating the precision machined nickel-based superalloy blade to about 1000℃ and then rapidly cooling.

[0004] The existing solid solution treatment method for nickel-based superalloy blades is as follows: first, heat treat the nickel-based superalloy blades in a continuous furnace at about 1000℃, then take out the nickel-based superalloy blades from the water after cooling.

[0005] Such solid solution treatment has the following defects:

[0006] (1) Cooling stage: on the one hand, the nickel-based superalloy blades are cooled in a cooling pool, and a large amount of water vapor is generated during the cooling process, which causes serious atomization of smoke and seriously affects the working environment. On the other hand, the concentrated cooling is a non-continuous production, which leads to uneven product quality after solid solution treatment.

[0007] (2) Heat treatment stage: during the heat treatment process, the air atmosphere inevitably contains dust particles, and the oil stains, impurities or machining debris left on the surface of the nickel-based superalloy blades may burn or oxidize at high temperature to form particles, and the spalling of the inner wall of the furnace may form particles. Therefore, there may be particles in the furnace cavity, and the presence of these particles may adhere to the surface of the parts, affecting the surface quality, and may also float in the furnace cavity, affecting the heat treatment effect. SUMMARY

[0008] In view of the above problems, the utility model provides a turbine blade solid solution treatment device, which aims to improve at least one problem mentioned in the background art.

[0009] The application discloses a solid solution treatment device for turbine blades, which further comprises a continuous cooling pool, a conveying belt comprising a first horizontal conveying section, a descending conveying section, a second horizontal conveying section and an ascending conveying section, the first horizontal conveying section being located in a furnace cavity of a continuous furnace, the second horizontal conveying section being located below a liquid level of the continuous cooling pool, and the ascending conveying section being located between the first horizontal conveying section and the second horizontal conveying section, and one end of the ascending conveying section being integrated with the second horizontal conveying section.

[0010] Optionally, the conveying belt is a mesh belt conveyor.

[0011] Optionally, at least one wear-resistant platform is arranged on the furnace bottom of the continuous furnace in the furnace length direction, the upper surface of the wear-resistant platform is in contact with the lower surface of the first horizontal conveying section, and the lower surface is in contact with the furnace bottom.

[0012] Optionally, the length of each wear-resistant platform is 350mm-380mm.

[0013] Optionally, each wear-resistant platform is detachably fixed on the furnace bottom.

[0014] Optionally, a through hole is formed in each wear-resistant platform from top to bottom.

[0015] Optionally, the hole diameter of the through hole gradually increases from the upper surface to the lower surface of the wear-resistant platform, and the hole diameter of the through hole located at the lower surface / the hole diameter of the through hole located at the upper surface is 1.001-1.005.

[0016] Optionally, at least one supporting platform is arranged in the continuous cooling pool in the length direction of the continuous cooling pool, the upper surface of the supporting platform is in contact with the lower surface of the second horizontal conveying section, and the lower surface is in contact with the pool bottom of the continuous cooling pool.

[0017] Compared with the prior art, the application has the following beneficial effects:

[0018] The solid solution treatment device for turbine blades provided by the application has more uniform product quality after solid solution treatment, avoids the formation of a large amount of smoke caused by concentrated cooling, and improves the working space. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are some embodiments of the application, and other drawings can be obtained by those skilled in the art without any creative labor.

[0020] Fig. 1 is a schematic diagram of the overall structure of the solid solution treatment device for turbine blades of the application;

[0021] Fig. 2 is a wear-resistant table structure schematic diagram of the utility model.

[0022] Mark explanation: 1, continuous furnace, 11, furnace bottom, 12, wear-resistant table, 13, through hole, 2, continuous cooling water pool, 21, liquid level, 22, support table, 3, transmission belt, 31, first horizontal transmission section, 32, descending transmission section, 33, second horizontal transmission section, 34, ascending transmission section. DETAILED DESCRIPTION

[0023] In the description of the utility model, it is necessary to explain that, unless there is explicit provision and limitation, the terms "installation", "connection", "connection" should be understood broadly, for example, it can be fixed connection, can be indirectly connected through intermediate medium, can be the communication of two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0024] In the description of the utility model, it is necessary to understand that the orientation or position relationship indicated by the terms "upper", "lower", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or position relationship shown in the drawing, which is only for the convenience of describing the utility model and simplifying the description, and is not indicative or suggestive of the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the utility model. In the description of the utility model, the meaning of "a plurality of" is two or more than two, unless there is another accurate and specific provision.

[0025] The terms "first", "second", "third", "fourth" and the like (if any) in the specification and claims of the present application and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a particular order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device including a series of steps or units does not have to be limited to those steps or units clearly listed, but can include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0026] In order to make the purposes, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art without creative work fall within the protection scope of the present application.

[0027] The technical solutions of the present application will be described in detail below with specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described in some embodiments.

[0028] Please refer to Figs. 1-2 , Fig. 1 is a schematic diagram of the overall structure of the solid solution treatment device for turbine blades of the present application, Fig. 2 is a schematic diagram of the wear-resistant platform structure of the present application.

[0029] A solid solution treatment device for turbine blades comprises a continuous furnace 1, a continuous cooling water pool 2 and a conveying belt 3. The conveying belt 3 comprises a first horizontal conveying section 31, a descending conveying section 32, a second horizontal conveying section 33 and an ascending conveying section 34. The first horizontal conveying section 31 is located in the furnace cavity of the continuous furnace 1. The second horizontal conveying section 33 is located below the liquid level 21 of the continuous cooling water pool 2. The ascending conveying section 34 is located between the first horizontal conveying section 31 and the second horizontal conveying section 33, and one end of the ascending conveying section 34 is integrated with the second horizontal conveying section 33.

[0030] The height change between the first horizontal conveying section 31 and the descending conveying section 32 is realized by a turning wheel. The height change between the descending conveying section 32 and the second horizontal conveying section 33 is realized by a turning wheel. The height change between the second horizontal conveying section 33 and the ascending conveying section 34 is realized by a turning wheel.

[0031] Through the first horizontal conveying section 31, the descending conveying section 32, the second horizontal conveying section 33 and the ascending conveying section 34, and by setting the second horizontal conveying section 33 below the liquid level 21 of the continuous cooling water pool 2, on the one hand, the continuous treatment in the cooling stage is realized, and the product quality after solid solution treatment is more uniform. On the other hand, since the turbine blade cooling is continuous treatment, the treatment amount per unit time is the same, and the formation of a large amount of smoke caused by concentrated cooling is avoided, and the working space is improved.

[0032] In one or more embodiments of the utility model, the transmission belt 3 is a mesh belt conveyor, which is used in the heat treatment of the solution treatment of the turbine blade. During the heat treatment, the atmosphere is allowed to flow uniformly in the furnace, ensuring that the blade surface is evenly heated. The heat radiation is allowed to be transmitted from below to the blade, ensuring that the blade is evenly heated as a whole, avoiding oxidation or decarburization. During water cooling, the cooling medium (such as gas or liquid) is allowed to pass quickly, improving the cooling efficiency and ensuring that the structure and performance of the blade meet the requirements. Moreover, the mesh belt conveyor also reduces the contact area between the blade and the conveyor belt, avoiding surface scratches or adhesion.

[0033] In one or more embodiments of the utility model, in order to avoid the direct contact between the first horizontal transmission section 31 and the furnace bottom 11 of the continuous furnace 1 and reduce the service life of the continuous furnace 1, at least one wear-resistant platform 12 is arranged on the furnace bottom 11 of the continuous furnace 1 along the furnace length direction, the upper surface of the wear-resistant platform 12 is in contact with the lower surface of the first horizontal transmission section 31, and the lower surface is in contact with the furnace bottom 11.

[0034] In one or more embodiments of the utility model, the length of each wear-resistant platform 12 is 350mm-380mm.

[0035] In one or more embodiments of the utility model, the wear-resistant platform 12 is detachably fixed to the furnace bottom 11 by fasteners, which can be, for example, screws, bolts, or other existing parts that can fix the wear-resistant platform 12 to the furnace bottom 11 during operation and detach the wear-resistant platform 12 from the furnace bottom 11 during maintenance.

[0036] In one or more embodiments of the utility model, each wear-resistant platform 12 is provided with a through hole 13 from top to bottom. After the particles in the furnace cavity fall into the through hole 13, they directly fall into the furnace bottom 11, reducing the impact on the heat treatment of the nickel-based superalloy blade and facilitating the improvement of the solution effect.

[0037] In one or more embodiments of the utility model, the hole diameter of the through hole 13 gradually increases from the upper surface to the lower surface of the wear-resistant platform 12. The hole diameter of the through hole 13 located at the lower surface / the hole diameter of the through hole 13 located at the upper surface is 1.001-1.005. The hole diameter of the through hole 13 located at the lower surface is greater than the hole diameter of the through hole 13 located at the upper surface, which is beneficial to the falling of particles and facilitates the cleaning of the wear-resistant platform 12 during maintenance. The hole diameter of the through hole 13 located at the lower surface / the hole diameter of the through hole 13 located at the upper surface is 1.001-1.005, which can take into account the strength of the wear-resistant platform 12.

[0038] In one or more specific embodiments of the utility model, in order to facilitate the second horizontal transmission section 33 to run underwater, while taking into account the cooling effect, at least one support table 22 is installed along the length direction of the continuous cooling pool 2 in the continuous cooling pool 2, the upper surface of the support table 22 is in contact with the lower surface of the second horizontal transmission section 33, the lower surface is in contact with the pool bottom of the continuous cooling pool 2, and the length of each wear-resistant table 12 is 50mm-100mm.

[0039] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the utility model, and not to limit them; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: it can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement to part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the utility model.

Claims

1. A solid solution treatment apparatus for turbine blades, comprising a continuous furnace (1) and a conveyor belt (3), characterized in that, The solid solution treatment device of the turbine blade further comprises a continuous cooling water tank (2), the conveying belt (3) comprises a first horizontal conveying section (31), a descending conveying section (32), a second horizontal conveying section (33) and an ascending conveying section (34), the first horizontal conveying section (31) is located in the furnace cavity of the continuous furnace (1), the second horizontal conveying section (33) is located below the liquid level (21) of the continuous cooling water tank (2), the ascending conveying section (34) is located between the first horizontal conveying section (31) and the second horizontal conveying section (33), and one end of the ascending conveying section (34) is integrated with the second horizontal conveying section (33).

2. The turbine blade solution treatment apparatus according to claim 1, characterized by The conveying belt (3) is a mesh belt conveyor.

3. The turbine blade solution treatment apparatus according to claim 2, wherein The continuous furnace (1) is provided with at least one wear-resistant platform (12) on the furnace bottom (11) in the length direction of the furnace, the upper surface of the wear-resistant platform (12) is in contact with the lower surface of the first horizontal conveying section (31), and the lower surface is in contact with the furnace bottom (11).

4. The apparatus for solution treatment of turbine blades according to claim 3, characterized in that, The length of each wear-resistant platform (12) is 350mm-380mm.

5. The turbine blade solution treatment apparatus according to claim 3, wherein Each wear-resistant platform (12) is detachably fixed on the furnace bottom (11).

6. The apparatus for solution treatment of turbine blades according to claim 5, characterized in that Each wear-resistant platform (12) is provided with a through hole (13) from top to bottom.

7. The turbine blade solution treatment apparatus according to claim 6, wherein The aperture of the through hole (13) is gradually increased from the upper surface to the lower surface of the wear-resistant platform (12), the aperture of the through hole (13) located on the lower surface / the aperture of the through hole (13) located on the upper surface is 1.001-1.

005.

8. The apparatus for solution treatment of turbine blades according to any one of claims 1 to 7, characterized in that The continuous cooling water tank (2) is provided with at least one supporting platform (22) along the length direction of the continuous cooling water tank (2), the upper surface of the supporting platform (22) is in contact with the lower surface of the second horizontal conveying section (33), and the lower surface is in contact with the bottom of the continuous cooling water tank (2).

9. The turbine blade solution treatment apparatus according to claim 8, wherein The length of each wear-resistant platform (12) is 50mm-100mm.

Images