High-frequency quenching equipment for turbine blade

Abstract

The utility model discloses steam turbine blade high-frequency quenching equipment which comprises a main body module and a cooling module, the main body module comprises a structural frame, a movable seat arranged on the structural frame in a sliding mode, a first electric push rod installed on the structural frame and connected with the movable seat, a clamping piece arranged on one side of the movable seat, a first motor installed on one side of the movable seat and fixedly connected with the clamping piece through a shaft, and a supporting platform arranged on one side of the structural frame. The driving piece is installed on the supporting platform, the threaded sleeve is connected to the driving piece in a sleeving mode, the induction heating device is fixed to the top end of the threaded sleeve, the structural frame is used for installing other assemblies, and the movable seat comprises sleeves slidably connected to the structural frame in a sleeving mode and a support fixed between the opposite sleeves. The sleeve ensures that the support can stably slide on the structural frame, the support is used for mounting the first motor and the clamping piece, and the high-frequency quenching equipment for the turbine blade has the advantages of high automation degree and high quenching efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to high -frequency quenching equipment technical field, concretely is a kind of high-frequency quenching equipment of steam turbine blade. BACKGROUND

[0002] Steam turbine blade is the general term of steel used in moving and stationary blades in steam turbine. Blade is the key part of steam turbine, and is one of the most delicate and important parts. It bears high temperature, high pressure, huge centrifugal force, steam force, steam excitation force, corrosion and vibration, and the combined action of water drop erosion in wet steam area under extremely harsh conditions. High-frequency quenching is needed on the end of steam turbine blade during processing to improve structural strength, so as to ensure the connection strength between steam turbine blade and rotating disc.

[0003] The existing high-frequency quenching equipment for steam turbine blade mainly has the following disadvantages in use: the degree of automation is low, there are many manual operation processes during quenching, which affects the quenching efficiency of the blade. In addition, the cooling water temperature is prone to be too high, and the cooled blade needs to be cooled after the cooling water temperature is reduced to a specified temperature, which has a long waiting time and further affects the quenching efficiency. Therefore, there is room for improvement. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the technical problems existing in prior art or related art.

[0005] Therefore, the utility model adopts the technical scheme: a high-frequency quenching equipment for steam turbine blade, comprising: a main body module and a cooling module, the main body module comprises a structure frame, a movable seat slidingly arranged on the structure frame, a first electric push rod installed on the structure frame and connected with the movable seat, a clamping piece arranged on one side of the movable seat, a first motor installed on one side of the movable seat and fixedly connected with the clamping piece, a supporting platform arranged on one side of the structure frame, a driving piece installed on the supporting platform, a threaded sleeve sleeved on the driving piece, and an induction heating device fixed on the top end of the threaded sleeve.

[0006] The cooling module comprises a water tank arranged on one side of the structure frame, a temperature sensor installed on one side of the water tank and extending into the inner cavity of the water tank, a cooling tank arranged on the other side of the structure frame, a plurality of spray pieces installed on the inner wall of the cooling tank, a plurality of high-speed fans installed on the top end of the cooling tank, a first pump installed on one side of the water tank, and a second pump installed on one side of the cooling tank.

[0007] Air inlet holes are symmetrically formed on the two sides of the cooling tank.

[0008] In a preferred example, the utility model can be further configured as: the movable seat comprises a sleeve slidingly sleeved on the structure frame and a support fixed between the sleeves.

[0009] In a preferred example, the present invention can be further configured as follows: the clamping member includes a base plate arranged on one side of the movable seat, a lower arc-shaped clamping block with its end fixed on the base plate, an upper arc-shaped clamping block with its end movably engaged in the inner cavity of the base plate, and a second electric push rod arranged in the inner cavity of the base plate and with its end fixedly connected to the end of the upper arc-shaped clamping block.

[0010] In a preferred example, the present invention can be further configured as follows: a groove is opened at the top of the support platform, and the driving member includes a threaded rod rotatably installed on the inner wall of the groove and a second motor installed on one side of the support platform and with a shaft fixedly connected to the end of the threaded rod.

[0011] In a preferred example, the present invention can be further configured as follows: the threaded sleeve is embedded in the groove, the threaded rod passes through the threaded sleeve, and the threaded rod and the threaded sleeve are engaged with each other.

[0012] In a preferred example, the present invention can be further configured as follows: the spraying member includes a support rod fixed on the inner wall of the cooling box, a plurality of nozzles mounted on the support rod, and a water inlet pipe arranged above the support rod and connected to each nozzle.

[0013] In a preferred example, the present invention can be further configured as follows: the water inlet of the first pump is connected to the inner cavity of the water tank, and the water outlet is provided with a first pipe connected to the water inlet pipe.

[0014] In a preferred example, the present invention can be further configured as follows: the water inlet of the second pump is connected to the inner cavity of the cooling box, and the water outlet is provided with a second pipe connected to the water tank.

[0015] By adopting the above technical solution, the beneficial effects achieved by the utility model are as follows:

[0016] 1. In the utility model, a structural frame is provided, and a movable seat is slidably provided on the structural frame, and the movable seat is controlled to move up and down by a first electric push rod, and a clamping piece is installed on one side of the movable seat, and a first motor is installed on the other side to be connected with the clamping piece, and a supporting platform is provided on one side of the structural frame, and an induction heating device is provided on the supporting platform, and a water tank is provided on one side of the structural frame. During operation, the worker only needs to place the blade on the clamping piece, and the clamping piece can automatically clamp and fix the impeller, and then the driving piece drives the induction heating device to move toward the blade, and high-frequency quenching is performed on the end of the blade. After the quenching is completed, the driving piece drives the induction heating device to reset, and the first motor drives the clamping piece to rotate, so that the quenched part of the impeller faces the water tank, and the first electric push rod moves downward, driving the blade to move down and insert into the water tank for cooling. After the cooling is completed, the first electric push rod drives the movable seat to reset, and the first motor drives the clamping piece to reset, completing the quenching procedure. The overall quenching process is automated, and the worker only needs to place the blade on the clamping piece and take out the quenched blade, which effectively improves the quenching efficiency of the blade and increases practical performance.

[0017] 2. In the utility model, a cooling box is installed on one side of the structural frame, a spray part is installed on the inner wall of the cooling box, and air inlet holes are opened on both sides of the cooling box, and a high-speed fan is installed on the top of the cooling box. In addition, a first pump is provided, the water inlet of the first pump is connected with the water tank, and the water outlet is connected with the spray part. A second pump is provided, the water inlet of the second pump is connected with the bottom end of the cooling box, and the water outlet is connected with the water tank. After quenching is completed, the first pump is started to pump the water in the water tank into the spray part for spraying, and the high-speed fan is started to discharge the air in the cooling box. At the same time, the outside air enters the cooling box under the action of the air pressure difference, and a high-speed air flow is formed in the cooling box. During the air flow, heat exchange is performed with the water sprayed by the spray part, and the water is quickly cooled and cooled. After that, the second pump pumps the cooled water back into the water tank, which can achieve rapid cooling of the cooling water after quenching, thereby further improving the quenching efficiency of the blades. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a structural schematic diagram from another perspective of the present invention;

[0020] Figure 3 This is a schematic diagram of a partial main module structure and its explosion structure of the utility model;

[0021] Figure 4 This is a schematic structural diagram of the induction heating device of the present utility model;

[0022] Figure 5 This is a cross-sectional view of the cooling box of the present invention and a schematic diagram of its cross-sectional structure.

[0023] Reference numerals:

[0024] 100, main body module; 110, structural frame; 120, movable seat; 121, sleeve; 122, support; 130, first electric push rod; 140, clamping member; 141, bottom plate; 142, lower arc-shaped clamping block; 143, upper arc-shaped clamping block; 144, second electric push rod; 150, first motor; 160, support platform; 161, groove; 170, driving member; 171, threaded rod; 172, second motor; 180, threaded sleeve; 190, induction heating device;

[0025] 200, cooling module; 210, water tank; 220, temperature sensor; 230, cooling box; 231, air inlet; 240, spray element; 241, support rod; 242, nozzle; 243, water inlet pipe; 250, high-speed fan; 260, first pump; 261, first pipeline; 270, second pump; 271, second pipeline. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in conjunction with specific embodiments and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features therein can be combined with each other unless there is any conflict.

[0027] Some embodiments of the present invention are described below with reference to the accompanying drawings.

[0028] Example 1:

[0029] Combine Figure 1-5 As shown, this embodiment provides a high-frequency quenching device for steam turbine blades, including: a main body module 100 and a cooling module 200.

[0030] Among them, the main module 100 includes a structural frame 110, a movable seat 120 slidably set on the structural frame 110, a first electric push rod 130 installed on the structural frame 110 and connected to the movable seat 120, a clamping member 140 set on one side of the movable seat 120, a first motor 150 installed on one side of the movable seat 120 and with its shaft fixedly connected to the clamping member 140, a support platform 160 set on one side of the structural frame 110, a driving member 170 installed on the support platform 160, a threaded sleeve 180 sleeved on the driving member 170, and an induction heating device 190 fixed on the top of the threaded sleeve 180.

[0031] The structural frame 110 is used to install other components. The movable seat 120 includes a sleeve 121 that is slidably sleeved on the structural frame 110 and a support 122 fixed between the relative sleeves 121. The sleeve 121 ensures that the support 122 can slide stably on the structural frame 110. The support 122 is used to install the first motor 150 and the clamping member 140.

[0032] The clamping member 140 is used to clamp and fix the blade, and includes a base plate 141 arranged on one side of the movable seat 120, a lower arc-shaped clamping block 142 whose end is fixed on the base plate 141, an upper arc-shaped clamping block 143 whose end is movably engaged in the inner cavity of the base plate 141, and a second electric push rod 144 arranged in the inner cavity of the base plate 141 and whose end is fixedly connected to the end of the upper arc-shaped clamping block 143. When in use, the worker only needs to place the blade on the lower arc-shaped clamping block 142, and then the second electric push rod 144 is started, driving the upper arc-shaped clamping block 143 to move downward, and cooperating with the lower arc-shaped clamping block 142 to fix the blade.

[0033] The first electric push rod 130 is fixed on the structural frame 110, and the top end is fixedly connected to the movable seat 120, which is used to drive the movable seat 120 to move up and down, that is, to drive the blades on the clamping member 140 to move up and down. The shaft of the first motor 150 is fixedly connected to the clamping member 140, which is used to drive the clamping member 140 to rotate. The rotation of the clamping member 140 drives the blades to rotate so that the quenching part of the blades faces the cooling module 200.

[0034] The support platform 160 is used to install the induction heating device 190. A groove 161 is opened at the top of the support platform 160. The driving member 170 includes a threaded rod 171 rotatably installed on the inner wall of the groove 161 and a second motor 172 installed on one side of the support platform 160 and with its shaft fixedly connected to the end of the threaded rod 171. At the same time, the threaded sleeve 180 is embedded in the groove 161, the threaded rod 171 passes through the threaded sleeve 180, and the threaded rod 171 and the threaded sleeve 180 are engaged with each other, so that when the second motor 172 rotates, it can drive the threaded rod 171 to rotate. The rotation of the threaded rod 171 drives the threaded sleeve 180 to move. The movement of the threaded sleeve 180 drives the induction heating device 190 to move, so that the induction heating device 190 is sleeved on the end of the blade.

[0035] The induction heating device 190 is used to perform high-frequency heating on the end of the blade to perform a quenching operation.

[0036] The cooling module 200 is used to quickly cool the blade end after it is heated, and includes a water tank 210 arranged on one side of the structural frame 110, a temperature sensor 220 installed on one side of the water tank 210 and extending into the inner cavity of the water tank 210, a cooling box 230 arranged on the other side of the structural frame 110, a plurality of spray parts 240 installed on the inner wall of the cooling box 230, a plurality of high-speed fans 250 installed on the top of the cooling box 230, a first pump 260 installed on one side of the water tank 210, and a second pump 270 installed on one side of the cooling box 230.

[0037] The water tank 210 is filled with cooling water for cooling the heated blade ends. The temperature sensor 220 is used to monitor the temperature of the cooling water in the water tank 210 in real time.

[0038] The cooling box 230 is used to cool the cooling water in the water tank 210. The spray part 240 is fixed on the inner wall of the cooling box 230, including a support rod 241 fixed on the inner wall of the cooling box 230, a plurality of nozzles 242 installed on the support rod 241, and a water inlet pipe 243 arranged above the support rod 241 and connected to each nozzle 242. The support rod 241 is used to install the nozzle 242 to ensure the stability of the nozzle 242. The nozzle 242 is used to spray the cooling water in the water tank 210, increase the contact area between the cooling water and the air, and enable the cooling water to quickly exchange heat with the air, thereby reducing the temperature of the cooling water.

[0039] Air inlet holes 231 are symmetrically opened on both sides of the cooling box 230, and a high-speed fan 250 is installed at the top of the cooling box 230. When the high-speed fan 250 is started, the air in the cooling box 230 can be discharged. At the same time, the outside air enters the cooling box 230 under the action of the air pressure difference, forming a high-speed air flow in the cooling box 230. During the air flow, heat exchange is carried out with the water sprayed by the spray part 240, and the water is quickly cooled down.

[0040] The water inlet of the first pump 260 is connected to the inner cavity of the water tank 210, and the water outlet is provided with a first pipe 261 connected to the water inlet pipe 243, which is used to pump the cooling water in the water tank 210 into the water inlet pipe 243. The water inlet of the second pump 270 is connected to the inner cavity of the cooling box 230, and the water outlet is provided with a second pipe 271 connected to the water tank 210, which is used to return the cooled cold water to the inner cavity of the water tank 210.

[0041] The working principle and use process of the utility model are as follows: when using, the blade is placed on the lower arc-shaped clamping block 142 so that the end to be quenched is aligned with the induction heating device 190. At this time, the second electric push rod 144 contracts, driving the upper arc-shaped clamping block 143 to move downward, cooperating with the lower arc-shaped clamping block 142 to clamp and fix the blade. Then the second motor 172 is started, driving the threaded rod 171 to rotate, the threaded rod 171 rotates to drive the threaded sleeve 180 to move, and the threaded sleeve 180 moves to drive the induction heating device 190 to move, so that the induction The heating device 190 is sleeved on the end of the blade, and the induction heating device 190 is started to perform high-frequency heating on the end of the blade. After the heating is completed, the driving member 170 drives the induction heating device 190 to reset, and at the same time the first motor 150 is started to drive the clamping member 140 to rotate, and the rotation of the clamping member 140 drives the blade to rotate, so that the quenching part of the blade faces the water tank 210, and the first electric push rod 130 drives the movable seat 120 to move downward, that is, drives the blade to move downward, so that the heated part of the blade extends into the water tank 210. At this time, the cooling part in the water tank 210 The water quickly cools it. After the cooling is completed, the first electric push rod 130 drives the movable seat 120 to reset. At the same time, the first motor 150 drives the clamping member 140 to rotate and reset. The second electric push rod 144 extends upward, driving the upper arc-shaped clamping block 143 to release the fixation of the blade. At this time, the worker can remove the quenched blade. In addition, after the quenching is completed, the first pump 260 is started to pump the higher temperature cooling water in the water tank 210 into the water inlet pipe 243 through the first pipe 261. The cooling water enters the water tank 210 through the water inlet pipe 243. The nozzle 242 sprays out, and when the high-speed fan 250 is started, the air in the cooling box 230 can be discharged. At the same time, the outside air enters the cooling box 230 under the action of the air pressure difference, forming a high-speed air flow in the cooling box 230. During the air flow, heat exchange is performed with the water sprayed from the nozzle 242, and the water is quickly cooled down. The cooled water gathers at the bottom of the cooling box 230. At this time, the second pump 270 is started to pump the cooled cooling water back into the water tank 210 through the second pipe 271 to form a cycle.

[0042] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A high-frequency quenching equipment for steam turbine blades, comprising: A main body module (100) and a cooling module (200), characterized in that the main body module (100) includes a structural frame (110), a movable seat (120) slidably arranged on the structural frame (110), a first electric push rod (130) mounted on the structural frame (110) and connected to the movable seat (120), a clamping member (140) arranged on one side of the movable seat (120), a first motor (150) mounted on one side of the movable seat (120) and having a shaft fixedly connected to the clamping member (140), a supporting platform (160) arranged on one side of the structural frame (110), a driving member (170) mounted on the supporting platform (160), a threaded sleeve (180) sleeved on the driving member (170), and an induction heating device (190) fixed to the top of the threaded sleeve (180); The cooling module (200) includes a water tank (210) arranged on one side of the structural frame (110), a temperature sensor (220) installed on one side of the water tank (210) and extending into the inner cavity of the water tank (210), a cooling box (230) arranged on the other side of the structural frame (110), a plurality of spraying members (240) installed on the inner wall of the cooling box (230), a plurality of high-speed fans (250) installed on the top of the cooling box (230), a first pump (260) installed on one side of the water tank (210), and a second pump (270) installed on one side of the cooling box (230); Air inlet holes (231) are symmetrically provided on both sides of the cooling box (230).

2. The high-frequency quenching equipment for steam turbine blades according to claim 1, characterized in that: The movable seat (120) comprises a sleeve (121) slidably sleeved on the structural frame (110) and a support (122) fixed between the sleeves (121) relative to each other.

3. The high-frequency quenching equipment for steam turbine blades according to claim 1, characterized in that: The clamping member (140) includes a base plate (141) arranged on one side of the movable seat (120), a lower arc-shaped clamping block (142) whose end is fixed to the base plate (141), an upper arc-shaped clamping block (143) whose end is movably engaged in the inner cavity of the base plate (141), and a second electric push rod (144) arranged in the inner cavity of the base plate (141) and whose end is fixedly connected to the end of the upper arc-shaped clamping block (143).

4. The high-frequency quenching equipment for steam turbine blades according to claim 1, characterized in that: A groove (161) is formed at the top of the support platform (160), and the driving member (170) comprises a threaded rod (171) rotatably mounted on the inner wall of the groove (161), and a second motor (172) mounted on one side of the support platform (160) and having a shaft fixedly connected to the end of the threaded rod (171).

5. The high-frequency quenching equipment for steam turbine blades according to claim 4, characterized in that: The threaded sleeve (180) is embedded in the groove (161), the threaded rod (171) passes through the threaded sleeve (180), and the threaded rod (171) and the threaded sleeve (180) are engaged with each other.

6. The high-frequency quenching equipment for steam turbine blades according to claim 1, characterized in that: The spraying member (240) comprises a support rod (241) fixed on the inner wall of the cooling box (230), a plurality of spray heads (242) mounted on the support rod (241), and a water inlet pipe (243) arranged above the support rod (241) and connected to each spray head (242).

7. The high-frequency quenching equipment for steam turbine blades according to claim 6, characterized in that: The water inlet of the first pump (260) is in communication with the inner cavity of the water tank (210), and the water outlet is provided with a first pipe (261) in communication with the water inlet pipe (243).

8. The high-frequency quenching equipment for steam turbine blades according to claim 1, characterized in that: The water inlet of the second pump (270) is in communication with the inner cavity of the cooling box (230), and the water outlet is provided with a second pipe (271) in communication with the water box (210).

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