An accuracy detection device for steam turbine blade processing

Abstract

The present invention discloses a precision detection device for the machining of steam turbine blades, including a machining table. A support frame is fixedly installed on the side wall of the machining table. A lifting rod is fixedly installed and extended on the support frame. A detection component is provided at the top end of the lifting rod. The detection component includes a clamping head, a detection housing, side wall slides, a central drive rod, and a detection rod. Among them: The clamping head is fixedly connected to the top end of the lifting rod. The detection housing is bolted to the clamping head. The side wall slides are fixedly installed on the inner wall of the detection housing. The central drive rod is arranged in the middle area of the detection housing. One end of the detection rod is slidably connected to the side wall slides and the other end is electrically connected to the central drive rod. A plurality of detection grooves are provided at the bottom of the detection housing. The detection rod is adapted to the detection grooves. The present invention has the characteristics of strong practicability and accurate detection results.

Description

Technical Field

[0001] The present invention relates to the technical field of blade detection, and particularly to a precision detection device for processing steam turbine blades. Background Art

[0002] The detection of steam turbine blades is usually carried out one by one. Personnel hold a small detector to check the steam turbine blades. However, during the manual detection process, the detection standards cannot be unified. For example, the pressing time cannot be accurately calculated, and the pressing force cannot be uniformly measured, resulting in low precision in the detection of steam turbine blades. There will be unqualified products in each batch of steam turbine blades, and customer feedback is poor. Therefore, it is necessary to design a precision detection device for processing steam turbine blades with strong practicability and accurate detection results. Summary of the Invention

[0003] The purpose of the present invention is to provide a precision detection device for processing steam turbine blades to solve the problems raised in the above background art.

[0004] To solve the above technical problems, the present invention provides the following technical solution: A precision detection device for processing steam turbine blades, including a processing table, characterized in that a support frame is fixedly installed on the side wall of the processing table, a lifting rod is fixedly installed and extended on the support frame, a detection component is provided at the top end of the lifting rod, and the detection component includes a clamping head, a detection housing, side wall slides, a central driving rod, and a detection rod, where:

[0005] The clamping head is fixedly connected to the top end of the lifting rod, the detection housing is bolted to the clamping head, the side wall slides are fixedly installed on the inner wall of the detection housing, the central driving rod is arranged in the middle area of the detection housing, one end of the detection rod is slidably connected to the side wall slides and the other end is electrically connected to the central driving rod;

[0006] A plurality of detection grooves are provided at the bottom of the detection housing, and the detection rod is adapted to the detection grooves.

[0007] According to the above technical solution, the detection rod is divided into a first detection rod and a second detection rod, and the first detection rod and the second detection rod are in clamping and sliding connection. A side groove is provided on the side wall of the second detection rod, a push rod is slidably installed in the side groove, and the push rod is electrically connected to a first driving part;

[0008] A telescopic slide rail is provided at the connection between the first detection rod and the second detection rod, one end of the telescopic slide rail is fixedly connected to the first detection rod, and the other end of the telescopic slide rail is fixedly connected to the second detection rod.

[0009] According to the above technical solution, a reinforcing column is fixedly installed on the top of the processing table, and a clamping component is provided at the top of the reinforcing column;

[0010] The clamping assembly includes a bottom plate, a pusher, a clamping rod, a clamping plate, and a fixing plate, where:

[0011] The bottom plate is fixedly installed on the top of the reinforcing column. The pusher is fixedly installed on the top of the bottom plate. A second driving part is arranged inside the pusher. The output end of the second driving part is fixedly connected to the clamping rod. The other end of the clamping rod is fixedly connected to the clamping plate. The fixing plate is welded to the other end of the bottom plate;

[0012] Buffer pads are installed on the inner walls of both the fixing plate and the clamping plate.

[0013] According to the above technical solution, a blade clamping mold is provided on the clamping assembly. The blade clamping mold includes an outer frame and elastic clamping rods, where:

[0014] The outer frame is clamped on the clamping assembly. The elastic clamping rods are fixedly arranged inside the outer frame. The elastic clamping rods are used to clamp steam turbine blades.

[0015] According to the above technical solution, a control center is fixedly provided on the support frame. A display screen is provided on the control center. A rotary button is provided on the top of the control center.

[0016] According to the above technical solution, it includes a driving unit, a data acquisition unit, and a feedback unit. The driving unit includes a lifting rod module, a clamping head module, a central driving rod module, a telescopic slide rail module, and a push rod module;

[0017] The lifting rod module is used to control the distance of the lifting rod moving up and down. The clamping head module is used to monitor whether the detection component is connected to the clamping head. If it falls off midway or the clamping is incomplete, an alarm is issued in advance. The central driving rod module is used to control the lifting of the detection rod. The telescopic slide rail module is used to control the movement of the telescopic slide rail. The push rod module is used to control the operation of the push rod;

[0018] A pressure sensing component is arranged inside the clamping head module;

[0019] A number of independent lifting motors are arranged in the central driving rod module. Each independent lifting motor is matched with a detection rod.

[0020] According to the above technical solution, the data acquisition unit is divided into a data storage unit and a detection unit;

[0021] The data storage unit is used to record all data during the detection process, facilitating the module to obtain and transmit data. The detection unit obtains various data of the steam turbine blade through sensors;

[0022] The feedback unit obtains data on whether the steam turbine blade is qualified, and feeds back the data result to the display screen to remind the personnel to replace the next steam turbine blade.

[0023] Compared with the prior art, the beneficial effects achieved by the present invention are as follows: in the present invention, by providing a push rod, a constant pressure inductor is provided at the top of the push rod. After the second detection rod is inserted between the steam turbine blades, the push rod protrudes through the side groove to drive the constant pressure inductor to contact the steam turbine blade. The push rod continuously moves outward to squeeze the steam turbine blade until the constant pressure inductor reaches the set value and maintains the squeezing state for a set time. If the set time is reached and the steam turbine blade is intact, it means the steam turbine blade is qualified. If the steam turbine blade breaks during the continuous squeezing process of the push rod, it means the steam turbine blade is unqualified. If the steam turbine blade breaks, the value on the constant pressure inductor will instantly become zero, and the display screen will show that this steam turbine blade is unqualified. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention. In the drawings:

[0025] Figure 1 is the overall front sectional structure schematic diagram of the present invention;

[0026] Figure 2 is the enlarged schematic diagram of area A of the present invention;

[0027] Figure 3 is the schematic diagram of the second detection rod not moving of the present invention;

[0028] Figure 4 is the schematic diagram after the second detection rod moves of the present invention;

[0029] Figure 5 is the schematic diagram inside the detection housing of the present invention;

[0030] Figure 6 is the system schematic diagram of the present invention;

[0031] In the figures: 1, processing table; 2, support frame; 3, control center; 4, rotation button; 5, lifting rod; 6, engaging head; 7, detection component; 8, reinforcing column; 9, bottom plate; 10, pusher; 11, clamping rod; 12, clamping plate; 13, fixing plate; 14, outer frame; 15, elastic clamping rod; 16, first detection rod; 17, push rod; 18, second detection rod; 19, telescopic slide rail; 20, central drive rod; 21, side wall slideway; 22, detection housing; 23, detection groove; 24, side groove; 25, display screen. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0033] Please refer to Figure 1-6 , the present invention provides a technical solution: a precision detection device for machining steam turbine blades, including a machining table 1, a support frame 2 is fixedly installed on the side wall of the machining table 1, a lifting rod 5 is fixedly installed and extended on the support frame 2, a detection component 7 is provided at the top end of the lifting rod 5, and the detection component 7 includes a clamping head 6, a detection housing 22, a middle side wall slideway 21, a central driving rod 20, and a detection rod. Among them:

[0034] The clamping head 6 is fixedly connected to the top end of the lifting rod 5, the detection housing 22 is bolted to the clamping head 6, the middle side wall slideway 21 is fixedly installed on the inner wall of the detection housing 22, the central driving rod 20 is arranged in the middle area of the detection housing 22, one end of the detection rod is slidably connected to the middle side wall slideway 21 and the other end is electrically connected to the central driving rod 20;

[0035] A plurality of detection grooves 23 are provided at the bottom of the detection housing 22, and the detection rod is adapted to the detection grooves 23.

[0036] The detection rod is divided into a first detection rod 16 and a second detection rod 18. The first detection rod 16 and the second detection rod 18 are connected by clamping and sliding. A side groove 24 is provided on the side wall of the second detection rod 18, and a push rod 17 is slidably installed in the side groove 24. The push rod 17 is electrically connected to a first driving part;

[0037] A telescopic slide rail 19 is provided at the connection between the first detection rod 16 and the second detection rod 18. One end of the telescopic slide rail 19 is fixedly connected to the first detection rod 16, and the other end of the telescopic slide rail 19 is fixedly connected to the second detection rod 18.

[0038] A reinforcing column 8 is fixedly installed on the top of the machining table 1, and a clamping component is provided at the top of the reinforcing column 8;

[0039] The clamping component includes a bottom plate 9, a pusher 10, a clamping rod 11, a clamping plate 12, and a fixing plate 13. Among them:

[0040] The bottom plate 9 is fixedly installed on the top of the reinforcing column 8, the pusher 10 is fixedly installed on the top of the bottom plate 9, a second driving part is provided inside the pusher 10, the output end of the second driving part is fixedly connected to the clamping rod 11, the other end of the clamping rod 11 is fixedly connected to the clamping plate 12, and the fixing plate 13 is welded to the other end of the bottom plate 9;

[0041] Buffer pads are installed on the inner walls of both the fixed plate 13 and the clamping plate 12;

[0042] Start the pusher 10. The pusher 10 drives the clamping rod 11 to retract or extend. The retraction or extension of the clamping rod 11 drives the clamping plate 12 to retract or extend. The retraction or extension of the clamping plate 12 can increase or decrease the space between the clamping plate 12 and the fixed plate 13, thereby controlling the clamping force of the clamping blades on the mold.

[0043] A blade clamping mold is provided on the clamping assembly. The blade clamping mold includes an outer frame 14 and elastic clamping rods 15, where:

[0044] The outer frame 14 is clamped on the clamping assembly. The elastic clamping rods 15 are fixedly arranged inside the outer frame 14. The elastic clamping rods 15 are used to clamp the steam turbine blades;

[0045] When the blade clamping mold is not needed, the space between the clamping plate 12 and the fixed plate 13 is the largest, which is convenient for placing the blade clamping mold. After the blade clamping mold is placed, the clamping plate 12 moves outward until it forms a fit with the fixed plate 13 to fix the blade clamping mold;

[0046] Place the steam turbine blade mold on the clamping assembly. Selecting a blade clamping mold that matches the current steam turbine blade can clamp the steam turbine blade more firmly. The operator presses the steam turbine blade into the elastic clamping rods 15 from top to bottom. The steam turbine blade is clamped by the elastic clamping rods 15, which is convenient for the detection component to perform detection.

[0047] A control center 3 is fixedly provided on the support frame 2. A display screen 25 is provided on the control center 3. A rotary button 4 is provided on the top of the control center 3;

[0048] The operator can rotate the rotary button 4 to start the detection component. After the detection component finishes running, the operator rotates the button 4 in the reverse direction to disconnect the power supply.

[0049] It includes a driving unit, a data acquisition unit, and a feedback unit. It is characterized in that the driving unit includes a lifting rod 5 module, a clamping head 6 module, a central driving rod 20 module, a telescopic slide rail 19 module, and a push rod 17 module;

[0050] The lifting rod 5 module is used to control the up and down movement distance of the lifting rod 5. The clamping head 6 module is used to monitor whether the detection component 7 is connected to the clamping head 6. If it falls off or the clamping is incomplete during the process, an alarm is issued in advance. The central driving rod 20 module is used to control the lifting of the detection rod. The telescopic slide rail 19 module is used to control the movement of the telescopic slide rail 19. The push rod 17 module is used to control the operation of the push rod 17;

[0051] The lifting rod 5 module is divided into two modes: start and stop. In the start mode, when the operator presses the rotary button 4, the lifting rod 5 descends to a set position to facilitate the operation of the detection component 7. In the stop mode, after the detection is completed, the lifting rod 5 rises to a set height to avoid human contact. At the same time, it is convenient for the operator to fix the steam turbine blade to avoid accidental touch;

[0052] The engaging head 6 module is internally equipped with a pressure sensing component. If the engaging head 6 comes off, the pressure sensing component sends a detachment instruction to the control center 3, and the control center 3 displays an alarm mark on the display screen 25 to remind the operator to reinforce it to avoid the detection component 7 falling and damaging the steam turbine blade;

[0053] The central drive rod 20 module is provided with a number of independent lifting motors, and each independent lifting motor is matched with a detection rod. The operator inputs the number and position of the steam turbine blades to be detected in this batch into the control center 3, then the central drive rod 20 module obtains the information and drives the central drive rod 20 to operate the corresponding number of detection rods, so that the detection rods protrude from the detection housing 22 through the detection slots 23. Then, the central drive rod 20 rotates to drive the detection rods to rotate, and aligns the positions of the detection rods with the intermediate interval areas of the steam turbine blades;

[0054] The telescopic slide rail 19 module is divided into three moving levels, a total of twelve levels from H1 - H12. H1 represents the smallest moving distance, and H12 represents the largest moving distance. After the position of the detection rod is set, the telescopic slide rail 19 starts to move, and adjusts the position of the second detection rod 18 according to the thickness of the steam turbine blade input by the operator, so that the second detection rod 18 can be completely embedded in the area between the steam turbine blades;

[0055] The top of the push rod 17 is provided with a constant pressure sensor. After the second detection rod 18 is embedded between the steam turbine blades, the push rod 17 protrudes through the side slot 24 to drive the constant pressure sensor to contact the steam turbine blade. The push rod 17 continuously moves outward to squeeze the steam turbine blade until the constant pressure sensor reaches the set value and maintains the squeezing state for a set time. If the set time is reached and the steam turbine blade is intact, it means the steam turbine blade is qualified. If the steam turbine blade breaks during the continuous squeezing process of the push rod 17, it means the steam turbine blade is unqualified. If the steam turbine blade breaks, the value on the constant pressure sensor will instantly become zero, and the display screen 25 will display that this steam turbine blade is unqualified.

[0056] The data acquisition unit is divided into a data storage unit and a detection unit;

[0057] The data storage unit is used to record all the data during the detection process to facilitate the module to obtain and transmit data. The detection unit obtains various data of the steam turbine blade through sensors;

[0058] The feedback unit obtains data on whether the steam turbine blade is qualified and feeds back the data result to the display screen 25 to remind the personnel to replace the next steam turbine blade.

[0059] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0060] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. An accuracy detection device for steam turbine blade processing, including a processing table, characterized in that, A support frame is fixedly installed on the side wall of the processing table. An elevating rod is fixedly installed and extended on the support frame. A detection component is provided at the top end of the elevating rod. The detection component includes a clamping head, a detection housing, side wall slides, a central driving rod, and a detection rod, where: The clamping head is fixedly connected to the top end of the elevating rod. The detection housing is bolted to the clamping head. The side wall slides are fixedly installed on the inner wall of the detection housing. The central driving rod is provided in the middle area of the detection housing. One end of the detection rod is slidably connected to the side wall slides and the other end is electrically connected to the central driving rod; A plurality of detection grooves are provided at the bottom of the detection housing. The detection rod is adapted to the detection grooves; The detection rod is divided into a first detection rod and a second detection rod. The first detection rod and the second detection rod are clamped and slidably connected. A side groove is provided on the side wall of the second detection rod. A push rod is slidably installed in the side groove. The push rod is electrically connected to a first driving part; A telescopic slide rail is provided at the connection between the first detection rod and the second detection rod. One end of the telescopic slide rail is fixedly connected to the first detection rod, and the other end of the telescopic slide rail is fixedly connected to the second detection rod; A reinforcing column is fixedly installed on the top of the processing table. A clamping component is provided at the top of the reinforcing column; The clamping component includes a bottom plate, a pusher, a clamping rod, a clamping plate, and a fixing plate, where: The bottom plate is fixedly installed on the top of the reinforcing column. The pusher is fixedly installed on the top of the bottom plate. A second driving part is provided inside the pusher. The output end of the second driving part is fixedly connected to the clamping rod. The other end of the clamping rod is fixedly connected to the clamping plate. The fixing plate is welded to the other end of the bottom plate; Buffer pads are installed on the inner walls of the fixing plate and the clamping plate; A blade clamping mold is provided on the clamping component. The blade clamping mold includes an outer frame and elastic clamping rods, where: The outer frame is clamped on the clamping component. The elastic clamping rods are fixedly provided inside the outer frame. The elastic clamping rods are used to clamp steam turbine blades.

2. The precision detection device for machining steam turbine blades according to claim 1, characterized in that, A control center is fixedly provided on the support frame. A display screen is provided on the control center. A rotary button is provided at the top of the control center.

3. An accuracy detection system for steam turbine blade machining, comprising a driving unit, a data acquisition unit and a feedback unit, characterized in that, The drive unit includes an elevating rod module, a clamping head module, a central driving rod module, a telescopic slide rail module, and a push rod module; The elevating rod module is used to control the up and down movement distance of the elevating rod. The clamping head module is used to monitor whether the detection component is completely connected to the clamping head. If it falls off midway or the clamping is incomplete, an alarm is issued in advance. The central driving rod module is used to control the lifting of the detection rod. The telescopic slide rail module is used to control the movement of the telescopic slide rail. The push rod module is used to control the operation of the push rod; A pressure sensing component is provided inside the clamping head module; A number of independent lifting motors are provided in the central driving rod module. Each independent lifting motor is matched with a detection rod; A detection component is provided at the top end of the elevating rod. The detection component includes a clamping head, a detection housing, side wall slides, a central driving rod, and a detection rod, where: The engaging head is fixedly connected to the top end of the lifting rod. The detection housing is bolted to the engaging head. The side wall slideway is fixedly installed on the inner wall of the detection housing. The central driving rod is arranged in the middle area of the detection housing. One end of the detection rod is slidably connected to the side wall slideway and the other end is electrically connected to the central driving rod; A plurality of detection grooves are provided at the bottom of the detection housing, and the detection rod is adapted to the detection grooves; The detection rod is divided into a first detection rod and a second detection rod. The first detection rod and the second detection rod are connected by snap sliding. A side groove is provided on the side wall of the second detection rod, and a push rod is slidably installed in the side groove. The push rod is electrically connected to a first driving part; A telescopic slide rail is provided at the connection between the first detection rod and the second detection rod. One end of the telescopic slide rail is fixedly connected to the first detection rod, and the other end of the telescopic slide rail is fixedly connected to the second detection rod.

4. An accuracy detection system for machining steam turbine blades according to claim 3, characterized in that, The data acquisition unit is divided into a data storage unit and a detection unit; The data storage unit is used to record all data during the detection process to facilitate the module to obtain and transmit data. The detection unit obtains various data of the steam turbine blade through sensors; The feedback unit obtains whether the steam turbine blade is qualified data and feeds back the data result to the display screen to remind the personnel to replace the next steam turbine blade.

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