CN113514469A - Annular combustion chamber gas turbine blade hole peeping inspection auxiliary tool and method - Google Patents
Annular combustion chamber gas turbine blade hole peeping inspection auxiliary tool and method Download PDFInfo
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- CN113514469A CN113514469A CN202110594548.3A CN202110594548A CN113514469A CN 113514469 A CN113514469 A CN 113514469A CN 202110594548 A CN202110594548 A CN 202110594548A CN 113514469 A CN113514469 A CN 113514469A
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- 238000002485 combustion reaction Methods 0.000 title claims abstract description 61
- 238000007689 inspection Methods 0.000 title claims abstract description 49
- 208000008918 voyeurism Diseases 0.000 title claims abstract description 46
- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000007246 mechanism Effects 0.000 claims abstract description 26
- 238000013461 design Methods 0.000 claims abstract description 19
- 238000003780 insertion Methods 0.000 claims abstract description 10
- 230000037431 insertion Effects 0.000 claims abstract description 10
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims 1
- 229910052782 aluminium Inorganic materials 0.000 claims 1
- 244000144985 peep Species 0.000 claims 1
- 238000004040 coloring Methods 0.000 abstract description 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000008439 repair process Effects 0.000 abstract description 4
- 230000007547 defect Effects 0.000 description 7
- 238000005259 measurement Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 238000009659 non-destructive testing Methods 0.000 description 1
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
- G01N21/88—Investigating the presence of flaws or contamination
- G01N21/91—Investigating the presence of flaws or contamination using penetration of dyes, e.g. fluorescent ink
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Abstract
The invention discloses an auxiliary tool and a method for peeping inspection of turbine blade holes of an annular combustion chamber gas turbine, which comprises an outer support, an inner stroke mechanism, a steering arm and a sleeve clamp; the outer support is located on the periphery of the tool, the inner portion of the outer support is connected with the front end and the rear end of the inner stroke mechanism, the steering arm is located on the side face of the inner stroke mechanism and connected with the sliding block of the inner stroke mechanism, and the sleeve clamp is connected with the tail end of the steering arm. The invention uses the design of the profiling type transparent support combined with the automatic movable sleeve to replace the operation of a handheld insertion tube, avoids the shaking of the lens, can finish the peeping by a single person and greatly improves the peeping efficiency. Meanwhile, a replaceable single/double sleeve design is adopted to support simultaneous fluorescence or coloring permeation and hole peeping operation. In addition, the functions of displaying the extending distance of the insertion pipe and locking the overrun are arranged, so that the risk that the lens is clamped into a part gap in the turning process of the rotor is effectively avoided, and the efficient, reliable and safe hole peeping inspection of the turbine blade can be ensured during the temporary stop or the minor repair of the gas turbine with the annular combustion chamber.
Description
Technical Field
The invention belongs to the technical field of nondestructive testing, and particularly relates to an auxiliary tool and method for peeping inspection of turbine blade holes of an annular combustion chamber gas turbine.
Background
The annular combustion chamber is one of the common structural forms of the combustion chamber of the heavy-duty gas turbine, has only one flame tube and is formed by an annular space at the periphery of a compressor-turbine shaft, and a plurality of fuel nozzles are arranged at the head part along the circumference. The annular combustion chamber has the advantages that: compact structure, small volume, light weight, small flow resistance loss, convenient flame connection, less smoke emission, simple maintenance, good use reliability and the like. Currently, the existing internal combustion engines using the structure include an V94.3A type engine by Siemens company and a GT13E2 type engine by original Alstom company. In-service gas turbines, the turbine blades need to be inspected regularly by peeping, and during minor repair or temporary stop of the gas turbine with the annular combustion chamber, after the gas turbine enters the flame tube through the manhole of the combustion chamber, the endoscope is adopted to extend into the blade flow passage to inspect the previous stages of turbine blades (generally comprising a turbine stage 1 static blade, a turbine stage 1 movable blade, a turbine stage 2 static blade and the like), the holes of the turbine blades need to be inspected one by one along the circumferential direction, and because the cavity space of the annular flame tube is large and a structure for effectively supporting the body is not provided, the workload for the holes inspection of the turbine blades is large when the insertion tube is manually inserted/pulled out one by one, the execution difficulty is high, and the efficiency is slow, especially, when the endoscope with the 3D phase measurement function is adopted for measuring the defect size, the problem of lens jitter of the handheld insertion tube is difficult to effectively avoid, and the defect size cannot be measured accurately. For the hole peeping inspection of the turbine stage 1 movable blade, the rear disk rotor stretching into the insertion tube can be held by hands at one position for hole peeping inspection, but the problem of lens shaking during defect size measurement also exists, and meanwhile, due to the rotation of the rotor, the risk that the lens is clamped into the gap of a part exists.
Therefore, the development of an auxiliary tool and a method for peeping inspection of the turbine blade hole of the annular combustion chamber gas turbine overcomes the limitations and the defects existing in the prior art for peeping inspection of the turbine blade hole in the annular combustion chamber, and the problem that efficient, reliable and safe peeping inspection of the turbine blade hole of the annular combustion chamber gas turbine can be carried out in the period of unit temporary stop or minor repair is urgently needed to be solved at present.
Disclosure of Invention
The invention aims to provide an auxiliary tool and a method for peeping a turbine blade hole of an annular combustion chamber gas turbine, aiming at the defects that the workload of manual handheld insert tubes for one-by-one inspection along an annular cavity is large, the execution difficulty is high, the efficiency is low, the accurate measurement of the size of a defect cannot be realized due to lens jitter, the accurate measurement of the size of the defect cannot be realized due to the lens jitter when a barring is used for inspecting a turbine movable blade, the lens is easy to be clamped into a gap by a rotating part and the like. Meanwhile, a replaceable single/double sleeve design is adopted to support simultaneous fluorescence or coloring permeation and hole peeping operation. In addition, the functions of displaying the extending distance of the insertion pipe and locking the overrun are arranged, so that the risk that the lens is clamped into a part gap in the turning process of the rotor is effectively avoided, and the efficient, reliable and safe hole peeping inspection of the turbine blade can be ensured during the temporary stop or the minor repair of the gas turbine with the annular combustion chamber.
The invention is realized by adopting the following technical scheme:
an auxiliary tool for peeping inspection of turbine blade holes of an annular combustion chamber gas turbine comprises an outer support, an inner stroke mechanism, a steering arm and a sleeve clamp; the outer support is located on the periphery of the tool, the inner portion of the outer support is connected with the front end and the rear end of the inner stroke mechanism, the steering arm is located on the side face of the inner stroke mechanism and connected with the sliding block of the inner stroke mechanism, and the sleeve clamp is connected with the tail end of the steering arm.
The invention is further improved in that the outer support comprises an upper profiling body, an upper end surface, side arms, a lower end surface and a lower profiling body, wherein the upper end surface is connected with the lower end surface through the side arms, the upper profiling body is connected with the upper end surface, the lower profiling body is connected with the lower end surface, and the upper profiling body and the lower profiling body are made of compressible materials adopting profiling design and are in profiling coupling with the inner wall surface and the outer wall surface of the annular combustion chamber. The side arms are designed as a left arm and a right arm and are of X-shaped arc-closing structures.
The invention is further improved in that the inner stroke mechanism is a linear module structure and comprises an upper base, a lead screw, a rear base, a guide rail, a sliding block, a coupler, a motor and a lower base, wherein the upper base is connected with the upper end surface of the outer support, the lower base is connected with the lower end surface of the outer support, the guide rail is connected with the rear base, one end of the lead screw is connected with the upper base, one end of the lead screw is connected with the coupler, the other end of the coupler is connected with the motor, and the motor is fixed on the lower base.
The invention further improves that the steering arm is designed to be two-degree-of-freedom steering and provided with a self-pretightening buckle and comprises an X-axis arm, a Z-axis arm, a 1 st clamping sleeve, a 2 nd clamping sleeve, a 1 st gear and a 2 nd gear, wherein one end of the X-axis arm is connected with the 1 st gear and embedded in the 1 st clamping sleeve, the other end of the X-axis arm is connected with the 2 nd clamping sleeve, and one end of the Z-axis arm is connected with the 2 nd gear and embedded in the 2 nd clamping sleeve.
The invention is further improved in that the casing clamp is designed for extending distance counting and excessive locking and comprises a hollow sleeve, a positioner and a locker, wherein the hollow sleeve is connected with the other end of the Z-axis arm, the inside of the hollow sleeve is used for penetrating a casing, the positioner is positioned on the side wall of the hollow sleeve, the locker is positioned inside the positioner, and the positioner is reserved with an external distance digital display meter port.
The invention is further improved in that the components such as the outer bracket, the inner stroke mechanism, the steering arm, the sleeve clamp and the like are all in transparent design.
The invention is further improved in that the hollow sleeve in the sleeve clamp can be in a single sleeve independent structure or a double-sleeve parallel structure, and the sleeve is an aluminum-plastic sleeve.
A peeping inspection method for turbine blade holes of an annular combustion chamber gas turbine is based on the peeping inspection auxiliary tool for the turbine blade holes of the annular combustion chamber gas turbine and comprises the following steps:
the tool is arranged at the outlet section of the annular combustion chamber, and is partially embedded into the flow channel of the 1 st stage turbine stationary blade. An endoscope insertion tube is penetrated into the sleeve, and the sleeve is penetrated into the hollow sleeve of the sleeve clamp;
the sleeve is continuously pushed according to the required detection part, the X-axis arm and the Z-axis arm can be manually adjusted at the same time, the two-degree-of-freedom steering is realized, and in addition, the inner stroke mechanism can be started, and the automatic movement of the sleeve in the Z-axis direction is realized;
the inspection of the holes of the 1 st stage moving blades of the turbine can be realized by fixing the positions and combining a rotor barring, and the inspection of the holes of the whole circle of turbine blades (which can comprise the 1 st stage moving blades of the turbine, the 2 nd stage moving blades of the turbine and the like) can be completed one by taking out the tool and putting the tool into the next stationary blade flow channel to repeat the operation.
The invention has at least the following beneficial technical effects:
the invention provides an auxiliary tool and a method for peeping and checking turbine blade holes of an annular combustion chamber gas turbine. Meanwhile, a replaceable single/double sleeve design is adopted to support simultaneous fluorescence or coloring permeation and hole peeping operation. In addition, the functions of displaying the extending distance of the inserting pipe and locking the overrun are arranged, so that the risk that a lens is clamped into a part gap in the turning process of the rotor is effectively avoided, the complexity and the reliability of the peeping inspection of the turbine blade hole of the gas turbine with the annular combustion chamber can be greatly improved, and the safe and stable operation of the unit is ensured.
Drawings
FIG. 1 is a front view of an auxiliary tool for peeping inspection of a turbine blade hole of an annular combustion chamber combustion engine.
FIG. 2 is a partial view of the auxiliary tool for peeping the annular combustion chamber combustion engine turbine blade hole.
FIG. 3 is a partial view of the auxiliary tool for peeping inspection of the turbine blade hole of the annular combustion chamber combustion engine.
FIG. 4 is a rear view of the auxiliary tool for peeping the annular combustion chamber combustion engine turbine blade hole.
Description of reference numerals:
1. an outer support 2, an inner stroke mechanism 3, a steering arm 4 and a sleeve clamp;
101. an upper profile body 102, an upper end face 103, a lower end face 104, a lower profile body 105 and a side arm; 201. the device comprises an upper base 202, a lead screw 203, a rear base 204, a guide rail 205, a sliding block 206, a coupling 207, a motor 208 and a lower base; 301. an X-axis arm 302, a Z-axis arm 303, a 1 st ferrule 304, a 2 nd ferrule 305, a 1 st gear 306 and a 2 nd gear; 401. a hollow sleeve 402, a locator 403 and a locker.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings.
Referring to the attached drawings 1, 2, 3 and 4, the invention provides an auxiliary tool for peeping a turbine blade hole of an annular combustion chamber gas turbine, which comprises an outer bracket 1, an inner stroke mechanism 2, a steering arm 3 and a sleeve clamp 4; the outer support 1 is positioned on the periphery of the tool, the inner part of the outer support is connected with the front end and the rear end of the inner stroke mechanism 2, the steering arm 3 is positioned on the side surface of the inner stroke mechanism 2 and is connected with the sliding block 205 of the inner stroke mechanism 2, and the sleeve clamp 4 is connected with the tail end of the steering arm 3.
The outer support 1 comprises an upper profiling body 101, an upper end face 102, side arms 105, a lower end face 103 and a lower profiling body 104, wherein the upper end face 102 is connected with the lower end face 103 through the side arms 105, the upper profiling body 101 is connected with the upper end face 102, the lower profiling body 104 is connected with the lower end face 103, the upper profiling body 101 and the lower profiling body 104 are made of compressible materials adopting profiling design and are in profiling coupling with the inner wall face and the outer wall face of the annular combustion chamber, the precise fitting between a tool and the annular combustion chamber can be realized, and the stability and the non-shake of the tool in a peeping inspection process are ensured. The side arm 105 is designed into a left arm and a right arm and is of an X-shaped arc-closing structure, the arc-closing design provides a larger moving space for the sleeve, the lateral large-amplitude movement of the sleeve is not influenced, and the coverage range of the peeping inspection is ensured.
The inner stroke mechanism 2 is a linear module structure and comprises an upper base 201, a lead screw 202, a rear base 203, a guide rail 204, a sliding block 205, a coupler 206, a motor 207 and a lower base 208, wherein the upper base 201 is connected with the upper end surface 102 of the outer support 1, the lower base 208 is connected with the lower end surface 103 of the outer support 1, the guide rail 204 is connected with the rear base 203, one end of the lead screw 202 is connected with the upper base 201, the other end of the lead screw is connected with the coupler 206, the other end of the coupler 206 is connected with the motor 207, the motor 207 is fixed on the lower base 208, the linear module structure can realize the longitudinal automatic movement of the endoscope sleeve, can record longitudinal stroke data in real time, and is convenient for position reproducibility of key parts during hole peeping inspection. Meanwhile, the structure of manually moving the sliding block 204 is supported, and the flexibility of a longitudinal stroke mode during site hole peeping inspection is ensured.
The steering arm 3 is designed for two-degree-of-freedom steering and self-pretightening buckles and comprises an X-axis arm 301, a Z-axis arm 302, a 1 st clamping sleeve 303, a 2 nd clamping sleeve 304, a 1 st gear 305 and a 2 nd gear 306, wherein one end of the X-axis arm 301 is connected with the 1 st gear 305 and embedded in the 1 st clamping sleeve 303, the other end of the X-axis arm 301 is connected with the 2 nd clamping sleeve 304, and one end of the Z-axis arm 302 is connected with the 2 nd gear 306 and embedded in the 2 nd clamping sleeve 304. This design can realize that X axle arm 301 rotates along the Z axle, Z axle arm 302 rotates along the X axle, adopt the gear from the pretension design in 1 st cutting ferrule 303 and the 2 nd cutting ferrule 304, can realize the fixed motionless state of axle arm during the state of stewing, it is rotatory to add the rotatory axle arm of certain dynamics manually and can loosen the buckle realization axle arm, can block by oneself after loosening, restore the fixed state, the free rotation of axle arm drive sleeve pipe when guaranteeing the inspection of spot hole peeping, can ensure the reachability of inspection and the stability of camera lens simultaneously.
The casing clamp 4 is for stretching into distance count and excessive locking design, including hollow cover 401, locator 402, locker 403, and wherein hollow cover 401 links to each other with the Z axostylus axostyle 302 other end, and inside is used for penetrating the sleeve pipe, and locator 402 is located hollow cover 401 lateral wall, and locker 403 is located inside locator 402, and external distance digital display table port is reserved to locator 402. The design of the extending distance can realize the statistics of the extending length of the inserting tube and connect the digital display meter to display the real-time distance value, the excessive locking design can automatically lock the inserting tube when the extending distance exceeds the limit value, and the two functions can reduce the risk that the inserting tube extends too long to cause the lens to be clamped into the part gap.
The components of the outer bracket 1, the inner stroke mechanism 2, the steering arm 3, the sleeve clamp 4 and the like are all in transparent design. The transparent design avoids the frock to block the inspection sight, ensures that the field of vision of insert tube in inspection range is clear visible.
The hollow sleeve 401 in the sleeve clamp 4 can be a single sleeve independent structure or a double sleeve parallel structure, and the sleeve is an aluminum-plastic sleeve. The double-barrel design supports simultaneous operation of two insertion tubes or fluorescence/coloring permeation and hole peeping inspection, and improves inspection efficiency and inspection method diversity.
A peeping inspection method for turbine blade holes of an annular combustion chamber gas turbine is based on the peeping inspection auxiliary tool for the turbine blade holes of the annular combustion chamber gas turbine and comprises the following steps:
1. the tool is arranged at the outlet section of the annular combustion chamber, and is partially embedded into the flow channel of the 1 st stage turbine stationary blade. An endoscope insertion tube is inserted into the cannula, and the cannula is inserted into the hollow sleeve 401 of the cannula clamp 4;
2. the sleeve is continuously pushed according to the required detection part, meanwhile, the X-axis arm 301 and the Z-axis arm 302 can be manually adjusted to realize double-freedom-degree steering, and in addition, the inner stroke mechanism 2 can be started to realize the automatic movement of the sleeve in the Z-axis direction;
3. the inspection of the holes of the 1 st stage moving blades of the turbine can be realized by fixing the positions and combining a rotor barring, and the inspection of the holes of the whole circle of turbine blades (which can comprise the 1 st stage moving blades of the turbine, the 2 nd stage moving blades of the turbine and the like) can be completed one by taking out the tool and putting the tool into the next stationary blade flow channel to repeat the operation.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and are intended to enable one skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. The utility model provides an annular combustion chamber combustion engine turbine blade hole peeps inspection auxiliary fixtures which characterized in that includes:
the outer support (1), the outer support (1) is located on the periphery of the tool;
the inner stroke mechanism (2) is provided with a sliding block (205) in a sliding way, and the front end and the rear end of the inner stroke mechanism (2) are connected to the inside of the outer bracket (1);
the steering arm (3) is positioned on the side surface of the inner stroke mechanism (2), and the steering arm (3) is connected to the sliding block (205);
the sleeve clamp (4), the sleeve clamp (4) with turn to the terminal of arm (3) and link to each other.
2. The annular combustion chamber combustion engine turbine blade peeping inspection auxiliary tool according to claim 1, characterized in that the outer support (1) comprises an upper profiling body (101), an upper end face (102), a side arm (105), a lower end face (103) and a lower profiling body (104);
the upper end face (102) is connected with the lower end face (103) through the side arm (105), the upper profiling body (101) is connected with the upper end face (102), the lower profiling body (104) is connected with the lower end face (103), and the upper profiling body (101) and the lower profiling body (104) are made of compressible materials adopting profiling design and are in profiling coupling with the inner wall face and the outer wall face of the annular combustion chamber.
3. The annular combustion chamber combustion engine turbine blade hole peeping inspection auxiliary tool according to claim 2, characterized in that the side arms (105) are designed into a left arm and a right arm and are of an X-shaped arc-closing structure.
4. The annular combustion chamber combustion engine turbine blade hole peeping inspection auxiliary tool according to claim 1, characterized in that the inner stroke mechanism (2) is of a linear module structure, and the inner stroke mechanism (2) comprises an upper base (201), a lead screw (202), a rear base (203), a guide rail (204), a sliding block (205), a coupling (206), a motor (207) and a lower base (208);
the upper base (201) is connected with the upper end face (102) of the outer support (1), the lower base (208) is connected with the lower end face (103) of the outer support (1), the guide rail (204) is connected with the rear base (203), one end of the lead screw (202) is connected with the upper base (201), the other end of the lead screw (202) is connected with one end of the coupler (206), the other end of the coupler (206) is connected with the motor (207), and the motor (207) is fixed on the lower base (208).
5. The annular combustion chamber combustion engine turbine blade hole peeping inspection auxiliary tool according to claim 1, characterized in that the steering arm (3) is of a two-degree-of-freedom steering design with a self-pre-tightening buckle, and comprises an X-axis arm (301), a Z-axis arm (302), a 1 st clamping sleeve (303), a 2 nd clamping sleeve (304), a 1 st gear (305) and a 2 nd gear (306);
one end of the X-axis arm (301) is connected with the 1 st gear (305), the X-axis arm (301) is embedded in the 1 st clamping sleeve (303), and the other end of the X-axis arm (301) is connected with the 2 nd clamping sleeve (304);
one end of the Z-axis arm (302) is connected with the 2 nd gear (306) and embedded in the 2 nd ferrule (304).
6. The annular combustion chamber combustion engine turbine blade hole peeping inspection auxiliary tool according to claim 5, characterized in that the sleeve clamp (4) is designed for extending distance counting and excessive locking and comprises a hollow sleeve (401), a positioner (402) and a locker (403);
the hollow sleeve (401) is connected with the other end of the Z-axis arm (302), and a sleeve is inserted into the hollow sleeve (401);
the positioner (402) is positioned on the side wall of the hollow sleeve (401), and the locker (403) is positioned inside the positioner (402);
and the locator (402) reserves an external distance digital display meter port.
7. The annular combustion chamber combustion engine turbine blade hole peeping inspection auxiliary tool according to claim 6, characterized in that the hollow sleeve (401) in the sleeve clamp (4) is of a single sleeve independent structure, and the sleeve is an aluminum-plastic sleeve.
8. The annular combustion chamber combustion engine turbine blade hole peeping inspection auxiliary tool according to claim 6, characterized in that the hollow sleeve (401) in the sleeve clamp (4) is a double-sleeve parallel structure, and the sleeve is an aluminum plastic sleeve.
9. The annular combustion chamber combustion engine turbine blade hole peeping inspection auxiliary tool according to claim 1, characterized in that the outer support (1), the inner stroke mechanism (2), the steering arm (3) and the sleeve clamp (4) are all of transparent design structures.
10. A method for peeping inspection of a turbine blade hole of an annular combustion chamber combustion engine, which is based on the auxiliary tool for peeping inspection of the turbine blade hole of the annular combustion chamber combustion engine as claimed in any one of claims 1 to 9, and comprises the following steps:
placing the tool at an outlet section of the annular combustion chamber, and partially embedding the tool into a flow channel of the turbine stationary blade of the 1 st stage;
an endoscope insertion tube is penetrated into a sleeve, and the sleeve is penetrated into a hollow sleeve (401) of a sleeve clamp (4);
the sleeve is continuously pushed according to the part to be detected, meanwhile, the X-axis arm (301) and the Z-axis arm (302) can be manually adjusted to realize double-freedom-degree steering, and in addition, the inner stroke mechanism (2) can be started to realize the automatic movement of the sleeve in the Z-axis direction;
the inspection of the holes of the 1 st stage moving blades of the turbine can be realized by fixing the positions and combining a rotor barring, and the inspection of the holes of the whole circle of turbine blades (which can comprise the 1 st stage moving blades of the turbine, the 2 nd stage moving blades of the turbine and the like) can be completed one by taking out the tool and putting the tool into the next stationary blade flow channel to repeat the operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110594548.3A CN113514469B (en) | 2021-05-28 | Auxiliary tool and method for peeping inspection of turbine blade holes of annular combustion chamber gas turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110594548.3A CN113514469B (en) | 2021-05-28 | Auxiliary tool and method for peeping inspection of turbine blade holes of annular combustion chamber gas turbine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113514469A true CN113514469A (en) | 2021-10-19 |
| CN113514469B CN113514469B (en) | 2024-06-04 |
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