Gas turbine cylinder body spraying tool

Abstract

The utility model discloses a gas turbine cylinder body spraying tool, which belongs to the field of thermal spraying, and comprises a centering fixing mechanism, the fixing mechanism comprises a tool disc and a sizing block, the tool disc is provided with a plurality of T-shaped grooves, and the lower part of the sizing block is provided with T-shaped blocks which are in sliding connection with the T-shaped grooves; a plurality of clamping jaws are arranged at the upper part of the sizing block and act together to clamp the cylinder body; the test piece clamping mechanism comprises a stand column, a supporting arm is arranged at the upper end of the stand column, a test piece is arranged at one end of the supporting arm, the test piece and the cylinder body are made of the same material, and the test piece and the cylinder body are sprayed together. By means of the centering fixing mechanism capable of adjusting the positioning position, clamping of cylinder bodies with different diameters during spraying is achieved, and the flexibility and universality of the tool clamp are enhanced; in addition, by arranging the test piece clamping mechanism, a test piece is used for replacing the cylinder body to carry out a coating damage test, and nondestructive testing of the cylinder body coating is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to thermal spraying field, especially relates to a gas turbine cylinder body spraying frock. BACKGROUND

[0002] As the key equipment in the field of modern industry and energy conversion, the efficient and stable operation of gas turbine is of great significance to power production, ship propulsion and industrial driving. The combustion chamber, one of the core components of gas turbine, needs to withstand extremely high temperature in the normal working process, which is far beyond the bearing limit of ordinary metal matrix materials. The high-temperature environment in the combustion chamber not only accelerates the thermal aging process of the material, but also aggravates the thermal corrosion and oxidation of the material, thereby seriously affecting the reliability and service life of the whole gas turbine.

[0003] The spraying operation of gas turbine cylinder body faces a series of technical problems. As a complex and precise mechanical device, the cylinder body of gas turbine not only has a large number of quantities, but also has different sizes of shell according to different models, which directly leads to the great diversification of design and production demand of spraying frock clamps. Each specific cylinder body often needs to be matched with a specially designed clamp to ensure that the coating can be uniformly and accurately applied to the inner surface of the shell, while avoiding deformation and shedding during the coating process.

[0004] In addition, the coating after the cylinder body spraying also needs to be strictly inspected. However, due to the complexity and particularity of the cylinder body, the conventional inspection method after spraying is often difficult to implement, especially some damage tests cannot be carried out, which leads to the fact that the spraying quality cannot be fully and accurately guaranteed. This not only affects the performance and reliability of the coating, but also increases the safety hazards during the operation of the gas turbine. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects in the prior art, providing a gas turbine cylinder body spraying frock, which not only solves the problems of high cost and poor universality of the clamp in the spraying process of the gas turbine shell, but also realizes nondestructive testing of the coating and guarantees the reliability of the cylinder body spraying.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of:

[0007] A gas turbine cylinder body spraying frock, comprising:

[0008] A centering fixing mechanism is used for clamping the cylinder body, the centering fixing mechanism comprises a frock disc and a backing iron, a plurality of T-shaped grooves are arranged on the frock disc, and a T-shaped block in sliding connection with the T-shaped grooves is arranged at the lower part of the backing iron; A pawl is arranged at the upper part of the backing iron, and a plurality of pawls jointly clamp the cylinder body;

[0009] The test piece clamping mechanism is used for clamping a test piece, and comprises a column, a support arm provided at the upper end of the column, and a test piece provided at one end of the support arm.

[0010] Further, the tooling plate is provided with a plurality of lifting holes.

[0011] Further, the support arm is provided with a clamping jaw at one end, the test piece is clamped in the clamping jaw, and the clamping jaw is a pneumatic finger.

[0012] Further, the upper and lower parts of the shim are provided with electromagnets, wherein the electromagnet of the lower part of the shim is used for fixing and positioning the shim and the tooling plate, and the electromagnet of the upper part of the shim is used for fixing the cylinder and the shim.

[0013] Further, the middle part of the shim is provided with a sliding groove, the clamping jaw is slidingly installed in the sliding groove, and the clamping jaw is connected with the shim by means of a fastener.

[0014] Further, one side of the T-shaped groove is provided with a scale line one, and one side of the sliding groove is provided with a scale line two.

[0015] Further, the column adopts a telescopic mechanism, the telescopic mechanism is a hydraulic cylinder, a pneumatic cylinder, an electric cylinder or a sleeve telescopic rod structure, and when the telescopic mechanism adopts the sleeve telescopic rod structure, the sleeve and the telescopic rod are positioned by means of screws.

[0016] Further, the support arm is slidingly connected with the upper end of the column, a fastening bolt is threadedly connected with the upper end of the column, and the lower end of the fastening bolt abuts against the support arm.

[0017] Further, the identification spraying mechanism comprises a plurality of magnetic adhesive sheets and a leakage plate, the plurality of magnetic adhesive sheets are spliced into an annular structure, the magnetic adhesive sheets are adsorbed in the bottom groove of the cylinder, the inner circle of the magnetic adhesive sheet is smaller than the inner diameter of the cylinder, the magnetic adhesive sheet is provided with a positioning hole, the position of the positioning hole corresponds to the position of the hole in the end face of the cylinder, a positioning pin is arranged in the positioning hole and used for positioning the magnetic adhesive sheet at the bottom of the cylinder, and the positioning pin is a conical structure; the inner circle of the magnetic adhesive sheet is provided with a plurality of interval distributed clamping grooves; the leakage plate is provided with a spraying identification, and the lower part of the leakage plate is provided with a buckle which is detachably inserted into the clamping groove.

[0018] Further, the two ends of the magnetic adhesive sheet are provided with positioning features matched with each other, the positioning features are used for positioning and interlocking a plurality of magnetic adhesive sheets, the positioning features adopt at least one convex and groove structure matched with each other, and the cross section of the convex and groove structure comprises one or more combinations of an arc shape, a rectangular shape, a trapezoidal shape and a dovetail shape.

[0019] The utility model discloses the beneficial effect is:

[0020] 1) The utility model discloses a centering fixing mechanism of adjustable positioning position, realizes the clamping of the cylinder body of different diameters when spraying, and enhances the flexibility and versatility of the tool clamp.

[0021] 2) The electromagnet is arranged on the upper portion and lower portion of the pad iron, the electromagnet of lower portion fixes and positions the pad iron and tool disc, and the electromagnet of upper portion fixes the cylinder body and pad iron, so that the pressing plate clamping on the upper portion of the cylinder body is not needed, the on-site operation is reduced, and the pressing plate directly contacting the workpiece to cause the indentation of the cylinder body is avoided.

[0022] 3) The claw is movably installed in the sliding slot of the pad iron, the scale line one is arranged on one side of the T-shaped slot, the scale line two is arranged on one side of the sliding slot, when the centering fixing mechanism is adjusted, the diameter parameter of the cylinder body is given in advance, after one of the pad iron and the claw is adjusted to the specified position, the pad iron and the claw of other positions are adjusted quickly according to the scale line one of the tool disc of the pad iron and the scale line two of the claw on the pad iron, so that repeated adjustment is not needed, and the adjustment efficiency of the centering fixing mechanism is improved.

[0023] 4) The telescopic mechanism is adopted for the stand column, the placement position of the test piece is placed at different heights; the support arm is slidably connected with the upper end of the stand column, the placement position of the test piece is adjusted, the spraying of the cylinder body of different diameters is adapted, the consistency of the test piece and the inner wall of the cylinder body is ensured, and the accuracy of coating detection is ensured.

[0024] 5) The identification spraying mechanism is arranged on the lower portion of the cylinder body, the problem that the manual spraying of the identification position is not accurate is solved, the plurality of magnetic sheets of the identification spraying mechanism are positioned and interlocked through positioning features, and the magnetic sheets are quickly and accurately assembled. BRIEF DESCRIPTION OF DRAWINGS

[0025] ATTACHMENT Figure 1 It is a gas turbine cylinder body spraying tool use state diagram.

[0026] ATTACHMENT Figure 2 It is a tool disc and claw assembly schematic view.

[0027] ATTACHMENT Figure 3 It is a claw and test piece clamping mechanism assembly schematic view.

[0028] ATTACHMENT Figure 4 It is a cylinder body bottom view.

[0029] ATTACHMENT Figure 5 It is Figure 4 A-A section view.

[0030] ATTACHMENT Figure 6 It is Figure 4Enlarged view at X.

[0031] Att Figure 7 is Figure 4 Enlarged view at Y.

[0032] Att Figure 8 is a structure diagram of a leakage plate.

[0033] In the figure, 1, centering fixing mechanism; 11, tooling disc; 12, T-shaped groove; 13, hoisting hole; 14, scale line one; 2, pad iron; 21, clamping jaw; 22, T-shaped block; 23, sliding groove; 24, scale line two; 3, test piece clamping mechanism; 31, stand column; 32, support arm; 33, clamping jaw; 34, test piece; 4, identification spraying mechanism; 41, magnetic film; 42, positioning hole; 43, positioning pin; 44, clamping groove; 45, leakage plate; 46, buckle; 47, positioning feature; 5, cylinder body. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings. Figures 1-8 It should be apparent that the described embodiments are only a part of embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0035] In the description of the present application, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present application, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0036] As Figure 1 shown, a gas turbine cylinder body spraying tooling, comprising:

[0037] The centering fixing mechanism 1 is used for clamping the cylinder body 5, as shown, the centering fixing mechanism 1 comprises a tooling disc 11 and a pad iron 2, the tooling disc 11 is provided with a plurality of T-shaped grooves 12, as shown, the lower part of the pad iron 2 is provided with a T-shaped block 22 which is in sliding connection with the T-shaped groove 12, the pad iron 2 is in sliding connection with the tooling disc 11, the spacing adjustment of the plurality of pad irons 2 is realized, the clamping of the cylinder body 5 of different diameters is facilitated, the flexibility and universality of the tooling fixture are enhanced; Figure 2 Figure 3 ​​

[0038] A test piece clamping mechanism 3 is used to clamp the test piece 34, as shown in the figure. Figure 3 The test piece clamping mechanism 3 includes a stand 31, the upper end of the stand 31 is provided with a support arm 32, the support arm 32 is located on the upper part of the cylinder body 5, one end of the support arm 32 is provided with a test piece 34, the test piece 34 is made of the same material as the cylinder body 5, and the test piece 34 is sprayed together with the cylinder body 5; when the cylinder body 5 is sprayed and then subjected to a damage test, the test piece 34 is used to replace the cylinder body 5 to perform the test, thereby avoiding damage to the cylinder body 5, achieving non-destructive testing of the coating of the cylinder body 5, and ensuring the comprehensiveness of the coating detection and the reliability of the test results by arranging the test piece clamping mechanism 3 on each of the plurality of shims 2.

[0039] As shown in the figure, Figure 2 The tooling disc 11 is provided with a plurality of lifting holes 13, which facilitates the lifting and moving of the tooling disc 11.

[0040] As shown in the figure, Figure 3 One end of the support arm 32 is provided with a clamping jaw 33, the test piece 34 is clamped inside the clamping jaw 33, and the clamping jaw 33 is a pneumatic finger, which facilitates clamping of test pieces 34 of different sizes.

[0041] The upper and lower parts of the shim 2 are provided with electromagnets (not shown in the figure), wherein the electromagnet at the lower part of the shim 2 is used to fix and position the shim 2 and the tooling disc 11, and the electromagnet at the upper part of the shim 2 is used to fix the cylinder body 5 and the shim 2, without the need to use a pressing plate to clamp the upper part of the cylinder body 5, thereby reducing the on-site operation and avoiding direct contact between the pressing plate and the workpiece to cause indentation on the cylinder body 5.

[0042] As shown in the figure, Figure 2 , Figure 3 The middle part of the shim 2 is provided with a sliding groove 23, the clamping jaw 21 is slidingly installed in the sliding groove 23 and connected with the shim 2 by using a fastener, the fastener adopts a fastening method known to those skilled in the art, such as a bolt, which facilitates adjustment of the position of the clamping jaw 21 on the shim 2 and further widens the clamping range of the centering and fixing mechanism 1.

[0043] As shown in the figure, Figure 2 , Figure 3 One side of the T-shaped groove 12 is provided with a scale line one 14, which facilitates quick adjustment of the position of the shim 2 and improves the accuracy of centering of the cylinder body 5; one side of the sliding groove 23 is provided with a scale line two 24, which facilitates quick adjustment of the position of the clamping jaw 21 on the shim 2; when the centering and fixing mechanism 1 is adjusted, by giving the diameter parameter of the cylinder body 5 in advance, only one of the shims 2 and the clamping jaw 21 needs to be adjusted to the specified position, and the other shims 2 and clamping jaws 21 can be quickly adjusted by referring to the scale line one 14 of the tooling disc 11 on which the shim 2 is located and the scale line two 24 of the clamping jaw 21 on the shim 2, without the need for repeated adjustment and alignment, thereby improving the efficiency of adjustment of the centering and fixing mechanism 1.

[0044] As shown in Figure 3 , the column 31 adopts a telescopic mechanism to meet the placement of the test piece 34 at different height positions. In the present embodiment, the telescopic mechanism adopts a sleeve telescopic rod structure, and the sleeve and the telescopic rod are positioned by screws.

[0045] As shown in Figure 3 , the support arm 32 is slidably connected to the upper end of the column 31, and a fastening bolt (not shown in the figure) is threadedly connected to the upper end of the column 31. The lower end of the fastening bolt abuts against the support arm 32, which is used to adjust the placement position of the test piece 34 to adapt to the spraying of cylinder bodies 5 of different diameters, so as to ensure the consistency of the test piece 34 and the inner wall of the cylinder body 5 sprayed, thereby ensuring the accuracy of the coating detection.

[0046] In order to distinguish different specifications and models of the cylinder body 5, it is necessary to spray numbers, letters and other marks in the inner cavity of the cylinder body 5. The position of the mark has requirements for the distance from the end face of the cylinder body 5 and the position of the hole. Manual identification is prone to deviation, resulting in problems such as placement position of the mark out of tolerance and inclination. In order to solve this problem, the present application also includes a mark spraying mechanism 4, as shown in Figure 4 、 Figure 5 , the mark spraying mechanism 4 includes a plurality of magnetic force sheets 41 and a leakage plate 45, and the plurality of magnetic force sheets 41 are spliced into an annular structure. The magnetic force sheet 41 is attracted to the bottom groove of the cylinder body 5. The inner diameter of the magnetic force sheet 41 is smaller than the inner diameter of the cylinder body 5. The magnetic force sheet 41 is provided with a positioning hole 42, and the position of the positioning hole 42 corresponds to the position of the hole in the end face of the cylinder body 5. The positioning hole 42 is provided with a positioning pin 43 for positioning the magnetic force sheet 41 at the bottom of the cylinder body 5. The positioning pin 43 is a conical structure, which ensures the accuracy of the positioning of the magnetic force sheet 41; as shown in Figure 7 , the inner circle of the magnetic force sheet 41 is provided with a plurality of spaced-apart clamping grooves 44; the leakage plate 45 is provided with a spraying mark, as shown in Figure 7 、 Figure 8 , the lower part of the leakage plate 45 is provided with a buckle 46, which is detachably inserted into the clamping groove 44; the present scheme sets the mark spraying mechanism 4 at the lower part of the cylinder body 5, which ensures the accuracy of the mark spraying position; in addition, in order to further ensure the accuracy of the mark spraying position, a foolproof structure can also be provided at the starting position (zero position) of one of the magnetic force sheets 41. This foolproof structure adopts a conventional design in the art, for example, an arc-shaped groove is provided on the magnetic force sheet 41, and another positioning pin 43 is provided in the arc-shaped groove, which is inserted into the hole at the bottom of the cylinder body 5.

[0047] As shown in Figure 6As shown, the two ends of the magnetic sheet 41 are provided with mutually matched positioning features 47 for positioning and interlocking of multiple magnetic sheets 41, the positioning features adopt at least one mutually engaged protrusion and groove structure, the cross section of the protrusion and groove includes one or more combinations of arc, rectangle, trapezoid, dovetail shape, etc., when the magnetic sheet is installed, only one of the magnetic sheets is positioned and installed at the bottom of the cylinder body 5, and the remaining magnetic sheets are assembled by using the positioning features 47, so that the assembly can be quickly and accurately completed. The spraying device can be arranged at the center of the tooling disc 11 and is lifted and rotated to spray the inner wall of the gas turbine cylinder.

[0048] The above is only an example and description of the structure of the present application, and those skilled in the art can make various modifications or supplements or use similar ways to replace the described specific embodiments, as long as they do not deviate from the structure of the present application or exceed the scope defined by the present application, which shall belong to the protection scope of the present application.

Claims

1. A gas turbine cylinder spray tooling apparatus, characterized by, The utility model relates to a kind of cylinder body test piece spraying device, including: Centering fixing mechanism (1) for clamping cylinder body (5), the centering fixing mechanism (1) includes tooling disc (11) and backing iron (2);The upper portion of the backing iron (2) is equipped with jaw (21), and multiple jaw (21) jointly clamp cylinder body (5);Test piece clamping mechanism (3) for clamping test piece (34), the test piece clamping mechanism (3) includes stand (31), and the upper end of stand (31) is equipped with support arm (32), the support arm (32) is located on the upper portion of cylinder body (5), and the one end of support arm (32) is equipped with test piece (34), the test piece (34) is same with the material of cylinder body (5), and test piece (34) is sprayed with cylinder body (5) together.

2. The gas turbine engine cylinder spray tooling of claim 1, wherein, The tooling disc (11) is equipped with several lifting holes (13), and the tooling disc (11) is equipped with several T-shaped grooves (12), and the lower portion of the backing iron (2) is equipped with T-shaped block (22) slidably connected with the T-shaped groove (12).

3. The gas turbine engine cylinder spray tooling of claim 1, wherein, The one end of the support arm (32) is provided with clamping jaw (33), and the test piece (34) is clamped in the clamping jaw (33), and the clamping jaw (33) is pneumatic finger.

4. The gas turbine engine cylinder spray tooling of claim 1, wherein, The upper portion and the lower portion of the backing iron (2) are both equipped with electromagnet, wherein the electromagnet of the lower portion of the backing iron (2) is used for fixing and positioning the backing iron (2) and the tooling disc (11), and the electromagnet of the upper portion of the backing iron (2) is used for fixing the cylinder body (5) and the backing iron (2).

5. The gas turbine engine cylinder spray tooling of claim 2, wherein, The middle portion of the backing iron (2) is equipped with sliding groove (23), and the jaw (21) is slidably installed in the sliding groove (23) and connected with the backing iron (2) by fastener.

6. A gas turbine vane coating fixture as defined in claim 5, wherein, The side of the T-shaped groove (12) is provided with scale line one (14), and the side of the sliding groove (23) is provided with scale line two (24).

7. The gas turbine engine cylinder spray tooling of claim 1, wherein, The stand (31) adopts telescopic mechanism, and the telescopic mechanism is hydraulic cylinder, air cylinder, electric cylinder or sleeve telescopic rod structure, when the telescopic mechanism adopts sleeve telescopic rod structure, the sleeve and the telescopic rod are positioned by screw.

8. A gas turbine combustor coating apparatus as defined in claim 7, wherein, The support arm (32) is slidably connected with the upper end of the stand (31), and the upper end of the stand (31) is threadedly connected with fastening bolt, and the lower end of the fastening bolt abuts against the support arm (32).

9. A gas turbine combustor coating apparatus according to any one of claims 1-8, wherein, It also includes identification spraying mechanism (4), the identification spraying mechanism (4) includes multiple magnetic force film (41) and leakage plate (45), and multiple magnetic force film (41) is spliced into annular structure, the magnetic force film (41) is adsorbed in the bottom groove of cylinder body (5), the inner diameter of the magnetic force film (41) is less than the inner diameter of cylinder body (5), the magnetic force film (41) is equipped with positioning hole (42), the position of the positioning hole (42) corresponds with the hole position of the end face of cylinder body (5), the positioning hole (42) is equipped with positioning pin (43) for positioning the magnetic force film (41) at the bottom of cylinder body (5), and the positioning pin (43) is conical structure;The inner circle of the magnetic force film (41) is equipped with several interval distribution clamping grooves (44);The leakage plate (45) is equipped with spraying identification, and the lower portion of the leakage plate (45) is equipped with buckle (46), and the buckle (46) is detachably inserted into the clamping groove (44).

10. A gas turbine vane coating fixture as defined in claim 9, wherein, The magnetic sheet (41) is provided with mutually cooperating locating features (47) at both ends for the positioning and interlocking of multiple magnetic sheets (41), the locating features (47) employing at least one interlocking projection and groove arrangement, the cross-section of the projection and groove comprising a combination of one or more of the following: arcuate, rectangular, trapezoidal, dovetail.

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