High-temperature alloy hollow blade depoling device
By introducing a telescopic cylinder and a screw rod into the core removal device for high-temperature alloy hollow blades, the rotation of the stirring shaft is achieved, which solves the problem of low core removal efficiency under high temperature and high pressure conditions and improves the scouring effect and core removal speed in the blade cavity.
Patent Information
- Application Number
- CN202421933629.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-12
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-08-12
AI Technical Summary
Existing high-temperature alloy hollow blade core removal devices are inefficient under high temperature and high pressure conditions and have difficulty effectively flushing out the reaction ions in the complex cavities of the blade, resulting in long core removal cycles and low efficiency.
A device was designed that includes a reaction vessel, a cap, a gas supply pipe, a condenser pipe, a placement frame, a heating ring, and a telescopic cylinder. The telescopic cylinder and the screw rod work together to rotate the stirring shaft, ensuring that the solution inside the reaction vessel can effectively flush the blade cavity. The rotation of the stirring shaft is controlled by adjusting the air pressure, which enhances the core removal effect.
It improves the flushing effect of reactants in the blade cavity, shortens the core removal cycle, improves the core removal efficiency, and accelerates the heating rate of the solution inside the reactor through uniform heating.
Smart Images
Figure CN223476290U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of core removal technology in investment casting, specifically relating to a core removal device for high-temperature alloy hollow blades. Background Technology
[0002] With the development of aero-engine technology, the thrust-to-weight ratio and thermal efficiency of engines are constantly improving, and the inlet temperature of blades is constantly rising, which places higher demands on the high-temperature resistance of blades. By pre-installing ceramic cores inside high-temperature alloy blades, the cast blades have complex air-cooling channels inside, which improves their cooling conditions and greatly enhances their temperature resistance. The removal of the ceramic core is achieved by using a core-removing fluid to corrode and destroy the joints between the core material particles. Due to the stable chemical properties of α-Al2O3, alumina-based core materials are difficult to react with acidic or alkaline corrosive solutions at room temperature and pressure, resulting in poor core removal. In actual core removal production, alumina-based cores are usually produced in a strongly alkaline environment under high temperature and high pressure conditions. The high temperature, high pressure, and strongly alkaline operating conditions place stringent requirements on the core removal equipment. At the same time, the [Al(OH)4]+ ions generated by the core removal reaction accumulate in the complex cavities of the blade, which inhibits the forward progress of the core removal reaction, resulting in a long core removal cycle and low efficiency. Existing core removal devices use the solution inside the reactor to replace the solution in boiling and calm states to flush the reaction ions accumulated in the complex cavities of the blade. However, this flushing method requires multiple adjustments to the gas pressure and temperature inside the reactor, and the flushing effect inside the cavities is not good. Utility Model Content
[0003] This invention provides a high-temperature alloy hollow blade core removal device to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a high-temperature alloy hollow blade core removal device, comprising a reaction vessel, a cap, a gas supply pipe, a condenser pipe, a placement frame, a heating ring, and a top rod, and further comprising a telescopic cylinder. The cap is mounted on the top of the reaction vessel by several bolts. The telescopic cylinder and the condenser pipe are mounted on the cap. The gas supply pipe is mounted on the condenser pipe and the telescopic cylinder. A pressure gauge is provided on the gas supply pipe. The heating ring is mounted on the inner wall of the reaction vessel by a mounting frame. The placement frame is mounted on the reaction vessel. A stirring shaft is rotatably mounted in the center of the placement frame. A spiral rod is provided on the telescopic rod of the telescopic cylinder. A spiral sleeve that cooperates with the spiral rod is provided on the top of the stirring shaft.
[0005] Preferably, the spiral sleeve is composed of several arc-shaped strips that mate with the side wall grooves of the spiral rod.
[0006] Preferably, the center of the placement frame is provided with a sleeve that cooperates with the stirring shaft and the spiral sleeve, and the central sleeve of the placement frame is provided with a groove that cooperates with the side wall protrusion of the stirring shaft.
[0007] Preferably, the top rod is provided on the side wall of the main body of the telescopic cylinder, and a fixing block is installed on the top of the central sleeve of the placement frame through a spring piece. The fixing block is provided with a protrusion that cooperates with the spiral sleeve.
[0008] Preferably, the bottom surface of the top rod is an inclined surface that mates with the inclined top surface of the fixing block.
[0009] Preferably, a support frame is installed inside the mounting frame via several support rods, and the heating ring is mounted on the support frame.
[0010] Preferably, the top surface of the reactor is provided with an annular protrusion, and the bottom surface of the cover is provided with a groove that matches the protrusion on the top surface of the reactor.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] This invention utilizes a telescopic cylinder, a spiral rod, and a spiral sleeve. The position of the spiral rod can be adjusted by regulating the air pressure inside the telescopic cylinder. The rotation of the stirring shaft is achieved through the cooperation of the spiral rod and the spiral sleeve, ensuring that the solution inside the reactor can thoroughly flush away the reactants inside the blade cavity, thus guaranteeing the device's effectiveness. Adjusting the air pressure inside the telescopic cylinder controls the rotation of the stirring shaft, facilitating user control. A fixing block ensures the stability of the spiral sleeve and facilitates the cooperation between the spiral rod and the spiral sleeve. A central sleeve located outside the spiral sleeve and the stirring shaft prevents damage to these components during use. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 for Figure 1 Schematic diagram of the structure at point A;
[0015] Figure 3 This is a schematic diagram of the structure of the placement frame in this utility model;
[0016] Figure 4 This is a schematic diagram of the structure of the screw rod and screw sleeve when they are fitted together in this utility model;
[0017] Figure 5 for Figure 3 A schematic diagram of the structure at point B.
[0018] In the diagram: 1. Reactor; 2. Cover; 3. Gas supply pipe; 31. Pressure gauge; 4. Condenser; 5. Telescopic cylinder; 51. Screw rod; 52. Screw sleeve; 6. Placement frame; 61. Stirring shaft; 7. Heating ring; 71. Mounting frame; 72. Support frame; 8. Top rod; 81. Fixing block; 82. Spring. Detailed Implementation
[0019] See also Figure 1-5 This utility model provides the following technical solution: a high-temperature alloy hollow blade core removal device, including a reaction vessel 1, a cover 2, a gas supply pipe 3, a condenser pipe 4, a placement frame 6, a heating ring 7, and a top rod 8, and also includes a telescopic cylinder 5. The top of the reaction vessel 1 is fitted with the cover 2 by several bolts. The telescopic cylinder 5 and the condenser pipe 4 are installed on the cover 2. The gas supply pipe 3 is installed on the condenser pipe 4 and the telescopic cylinder 5. A pressure gauge 31 is provided on the gas supply pipe 3. The heating ring 7 is installed on the inner wall of the reaction vessel 1 by a mounting frame 71. The placement frame 6 is installed on the reaction vessel 1. A stirring shaft 61 is rotatably installed in the center of the placement frame 6. A spiral rod 51 is provided on the telescopic rod of the telescopic cylinder 5. A spiral sleeve 52 that cooperates with the spiral rod 51 is provided on the top of the stirring shaft 61.
[0020] Reactor 1 is used to store the decoction solution. The cap 2 seals the top of reactor 1. Sealing gaskets are provided on the sidewalls where reactor 1 and cap 2 contact. Cap 2 is installed on reactor 1 using several bolts and nuts. The installation method of cap 2 and the sealing gaskets on reactor 1 and cap 2 ensure the sealing performance of reactor 1 during operation. Heating ring 7 is used to heat the solution in reactor 1, allowing for temperature adjustment. The sidewall of mounting frame 71 has a mesh structure to ensure that heating ring 7 can adequately heat the solution in reactor 1. Gas can be injected into reactor 1 through gas pipe 3 on condenser pipe 4, achieving temperature control of the reaction... The internal pressure of reactor 1 is adjusted as follows: During operation, the solution enters the gas supply pipe 3 in vapor form. The gas passes through the condenser pipe 4, where the solution is condensed. The condensed solution then returns to the reactor 1, reducing waste. A sealing valve on the gas supply pipe 3 ensures the reactor 1 is airtight. A pressure gauge 31 on the gas supply pipe 3 monitors the internal pressure of reactor 1, allowing users to adjust it. The placement frame 6 holds the blades to be de-cored. The shape of the placement frame 6 ensures sufficient contact between the solution inside the reactor 1 and the blades. The gas supply pipe 3 on the telescopic cylinder 5 regulates the internal pressure of the cylinder. When the pressure inside the telescopic cylinder 5 is greater than the pressure inside the reactor 1, the telescopic rod of the telescopic cylinder 5 extends. As the telescopic cylinder 5 extends, the spiral rod 51 moves along with it. During this movement, the spiral rod 51 enters the spiral sleeve 52. With the movement of the spiral rod 51, the spiral sleeve 52 rotates. The rotating spiral sleeve 52 drives the stirring shaft 61 to rotate, which in turn agitates the solution inside the reactor 1. During operation, waste liquid accumulates inside the blade cavity, affecting the core removal effect. When the solution inside the reactor 1 is agitated, the waste liquid inside the blade cavity is carried away by the agitated solution, ensuring the core is removed from the blade. The surface of the device is always in contact with the new solution, ensuring the working effect of the device. When the air pressure inside the telescopic cylinder 5 is reduced, the telescopic rod of the telescopic cylinder 5 moves the spiral rod 51 upward. As the spiral rod 51 moves upward, the spiral sleeve 52 moves the stirring shaft 61 in the opposite direction. The forward and reverse rotation of the stirring shaft 61 is achieved by adjusting the air pressure inside the telescopic cylinder 5. The continuous forward and reverse rotation of the stirring shaft 61 ensures the core removal effect of the device. The rotating stirring shaft 61 also ensures that the solution inside the reactor 1 can be heated evenly, which improves the heating rate of the solution inside the reactor 1. By comparing the data of the pressure gauge 31 connected to the reactor 1 and the telescopic cylinder 5, the user can easily adjust the air pressure inside the telescopic cylinder 5.
[0021] Specifically, the spiral sleeve 52 is composed of several arc-shaped strips that cooperate with the side wall grooves of the spiral rod 51.
[0022] The shape of the spiral sleeve 52 ensures its working effect. The shape of the spiral sleeve 52 also ensures that no solution will accumulate inside the spiral sleeve 52, thus preventing the spiral rod 51 from being affected by the solution inside the spiral sleeve 52 during the process of entering the spiral sleeve 52, and ensuring the working effect of the spiral sleeve 52.
[0023] Specifically, the center of the placement frame 6 is provided with a sleeve that cooperates with the stirring shaft 61 and the spiral sleeve 52, and the central sleeve of the placement frame 6 is provided with a groove that cooperates with the side wall protrusion of the stirring shaft 61.
[0024] The central sleeve of the placement frame 6 encloses the stirring shaft 61 and the spiral sleeve 52, preventing them from colliding with the blades stored in the placement frame 6 during rotation. This ensures that the stirring shaft 61 and the spiral sleeve 52 are not damaged during use and extends their service life. The cooperation between the side wall protrusion of the stirring shaft 61 and the inner wall groove of the central sleeve of the placement frame 6 serves as a limiting function, ensuring the stability of the spiral sleeve 52 and the stirring shaft 61 during rotation.
[0025] Specifically, a top rod 8 is provided on the side wall of the main body of the telescopic cylinder 5, and a fixing block 81 is installed on the top of the central sleeve of the placement frame 6 through a spring piece 82. The fixing block 81 is provided with a protrusion that cooperates with the spiral sleeve 52.
[0026] The fixing block 81 can fix the spiral sleeve 52, ensuring the stability of the spiral sleeve 52 during the use of the device and facilitating the cooperation between the spiral rod 51 and the spiral sleeve 52. When the cover 2 is installed on the reactor 1, the push rod 8 will contact the inclined surface of the top of the fixing block 81. As the push rod 8 moves, the fixing block 81 is pushed, making it easy for the user to release the fixing block 81 from fixing the spiral sleeve 52. After the push rod 8 pushes the fixing block 81, the spring piece 82 set on the fixing block 81 undergoes elastic deformation. After the push rod 8 releases the pushing of the fixing block 81, the fixing block 81 will return to its original position under the action of the spring piece 82. At this time, the spiral sleeve 52 is fixed, ensuring the working effect of the fixing block 81.
[0027] Specifically, the bottom surface of the push rod 8 is an inclined surface that matches the inclined top surface of the fixing block 81.
[0028] The bottom surface shape of the push rod 8 ensures that when the push rod 8 pushes the fixed block 81, the bottom surface of the push rod 8 contacts the top inclined surface of the fixed block 81, which reduces the damage to the fixed block 81 and the push rod 8 when the fixed block 81 is pushed, and extends the service life of the push rod 8 and the fixed block 81.
[0029] Specifically, a support frame 72 is mounted inside the mounting frame 71 via several support rods, and the heating ring 7 is mounted on the support frame 72.
[0030] The support frame 72 is used to place the heating ring 7. The support frame 72 is connected to the inner wall of the mounting frame 71 by several connecting rods. The position of the support frame 72 ensures that the heating ring 7 will not contact the inner wall of the reactor 1 during use, further increasing the contact area between the solution inside the reactor 1 and the heating ring 7, thus ensuring the working effect of the heating ring 7.
[0031] Specifically, the top surface of the reactor 1 is provided with an annular protrusion, and the bottom surface of the cover 2 is provided with a groove that matches the protrusion on the top surface of the reactor 1.
[0032] The protrusion on the top of the reactor 1 serves as a guide, making it easier for the user to install the cover 2 on the reactor 1. The fit between the protrusion on the top of the reactor 1 and the corresponding groove improves the sealing performance of the reactor 1 during use.
[0033] The working principle and usage process of this utility model are as follows: Place the blade to be processed into the placement frame 6, install the cover 2 on the reactor 1. When the cover 2 is installed on the reactor 1, the push rod 8 pushes the fixing block 81, releasing the fixing block 81 from the spiral sleeve 52. Gas is then introduced into the reactor 1 through the gas supply pipe 3 connected to the condenser pipe 4, increasing the pressure inside the reactor 1. The heating ring 7 is activated to heat the solution inside the reactor 1. When the temperature and pressure inside the reactor 1 rise to suitable values, the cover connected to the condenser pipe 4 is sealed. Gas is introduced into the telescopic cylinder 5 through the gas supply pipe 3, causing the gas pressure inside the telescopic cylinder 5 to rise. Under the action of the telescopic cylinder 5, the screw rod 51 moves downward, and the screw sleeve 52 is rotated by the downward-moving screw rod 51. The rotating screw sleeve 52 will drive the stirring shaft 61 to rotate, which will agitate the solution inside the reaction vessel 1, improving the working efficiency of the device. After the screw rod 51 moves to the limit position, it depressurizes the telescopic cylinder 5, and the screw rod 51 rises, while the screw sleeve 52 drives the stirring shaft 61 to rotate in the opposite direction.
[0034] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. A high-temperature alloy hollow blade core removal device, comprising a reaction vessel (1), a cap (2), a gas supply pipe (3), a condenser pipe (4), a placement frame (6), a heating ring (7), and a top rod (8), characterized in that: It also includes a telescopic cylinder (5), the top of the reactor (1) is fitted with a cover (2) by several bolts, the telescopic cylinder (5) and the condenser pipe (4) are mounted on the cover (2), the gas supply pipe (3) is mounted on the condenser pipe (4) and the telescopic cylinder (5), the gas supply pipe (3) is equipped with a pressure gauge (31), the heating ring (7) is mounted on the inner wall of the reactor (1) by a mounting frame (71), the placement frame (6) is mounted on the reactor (1), the stirring shaft (61) is rotatably mounted in the center of the placement frame (6), the telescopic rod of the telescopic cylinder (5) is equipped with a spiral rod (51), and the top of the stirring shaft (61) is equipped with a spiral sleeve (52) that cooperates with the spiral rod (51).
2. The high-temperature alloy hollow blade core removal device according to claim 1, characterized in that: The spiral sleeve (52) is composed of several arc-shaped strips that engage with the side wall grooves of the spiral rod (51).
3. The high-temperature alloy hollow blade core removal device according to claim 1, characterized in that: The center of the placement frame (6) is provided with a sleeve that cooperates with the stirring shaft (61) and the spiral sleeve (52), and the central sleeve of the placement frame (6) is provided with a groove that cooperates with the side wall protrusion of the stirring shaft (61).
4. The high-temperature alloy hollow blade core removal device according to claim 1, characterized in that: The telescopic cylinder (5) has a top rod (8) on its side wall. The top of the central sleeve of the placement frame (6) is fitted with a fixing block (81) via a spring piece (82). The fixing block (81) has a protrusion that cooperates with the spiral sleeve (52).
5. The high-temperature alloy hollow blade core removal device according to claim 4, characterized in that: The bottom surface of the top rod (8) is an inclined surface that mates with the inclined top surface of the fixing block (81).
6. The high-temperature alloy hollow blade core removal device according to claim 1, characterized in that: The mounting frame (71) has a support frame (72) installed inside by several support rods, and the heating ring (7) is installed on the support frame (72).
7. The high-temperature alloy hollow blade core removal device according to claim 1, characterized in that: The top surface of the reactor (1) is provided with an annular protrusion, and the bottom surface of the cover (2) is provided with a groove that matches the protrusion on the top surface of the reactor (1).