Spraying fixture for combustion liner of combustion chamber of gas turbine

Abstract

Disclosed in the present invention is a spraying fixture for a combustion liner of a combustion chamber of a gas turbine, relating to the technical field of spray tooling. The spraying fixture comprises a clamping unit comprising an abutting component abutting against a port of the combustion liner, a grating component arranged at the circle center position of the abutting component, the lower end of the grating component extending to a position below the abutting component, and eight clamping members arranged on the abutting component and annularly distributed using the grating component as the circle center. The present invention can achieve stable and effective clamping of the combustion liner of the combustion chamber of the gas turbine during manufacturing for an inner surface thermal barrier coating layer, ensuring the stability thereof during spraying; furthermore, by means of a grating design, a channel for communicating the interior of the combustion liner with external air is increased, the efficiency of cooling the wall of the combustion liner is improved, and the clamping and fixing range of the device can be adjusted on the basis of the actual size of the port of the combustion liner, thereby meeting more use requirements.

Description

A gas turbine combustor flame tube spraying tooling fixture TECHNICAL FIELD

[0001] The present application relates to the technical field of spraying tooling, in particular to a gas turbine combustor flame tube spraying tooling fixture. BACKGROUND

[0002] Heavy gas turbine is one of the symbolic equipments of power country, and is related to national energy security and supply level. The three core hot end components of gas turbine are turbine blade, combustor and turbine disc. From the working condition, the combustor is the highest temperature component of the gas turbine, which is composed of an air inlet device, a shell, a flame tube, a nozzle and an igniter. Among them, the flame tube is the core component that contains the main gas flow and is most seriously eroded by high-temperature environment and airflow. The main service model in China is F-class gas turbine, and the combustor flame tube works at a high temperature above 1400 DEG C. The inner surface of the flame tube is coated with a thermal barrier coating by plasma spraying technology for heat insulation and protection.

[0003] At present, domestic plasma spraying technology can realize automatic spraying of complex curved surfaces, but due to the rotary structure of the flame tube, the inner surface coating spraying space is limited, it is impossible to ensure that the 90-degree vertical spraying is always used during the spraying process, and the spraying gas produces gas disturbance in the flame tube, which easily leads to loose coating organization. In addition, the flame tube is a thin-walled component, and the substrate temperature is high during the spraying process. Therefore, in order to achieve perfect coating of the thermal barrier coating on the inner surface of the heavy gas turbine combustor flame tube, a tooling fixture matched with plasma spraying must be designed to ensure the accurate positioning of the component surface during the spraying process and the performance and quality of the coating. SUMMARY

[0004] In view of the above problems of the existing gas turbine combustor flame tube spraying tooling fixture, the present application is proposed.

[0005] Therefore, the purpose of the present application is to provide a gas turbine combustor flame tube spraying tooling fixture, which aims to enable the thermal barrier coating on the inner surface of the gas turbine combustor flame tube to rotate coaxially and stably with the spraying workbench during the preparation process, and to cool the flame tube wall during the spraying process.

[0006] To solve the above technical problems, the present application provides the following technical scheme: including a clamping unit, which comprises an abutting component abutting against the port of the flame tube, a grid component provided at the center of the abutting component and extending to below the abutting component, eight groups of clamping components provided on the abutting component and distributed in a ring shape with the grid component as the center, an adjusting component provided below the abutting component and sleeved below the grid component at the center, and a driving component provided on one side below the abutting component.

[0007] As a preferred scheme of the gas turbine combustor flame tube spraying tooling fixture, the abutting part comprises a sleeve above the grid part, eight groups of arc-shaped plates distributed annularly below the sleeve, a limiting sliding slot between every two adjacent groups of the abutting part, and a limiting sheet in the limiting sliding slot.

[0008] As a preferred scheme of the gas turbine combustor flame tube spraying tooling fixture, the sleeve is a hollow circular tube structure, and the grid part is arranged in the circular tube structure of the sleeve, and the limiting sheet in the limiting sliding slot is fixedly connected with the arc-shaped plates on both ends.

[0009] As a preferred scheme of the gas turbine combustor flame tube spraying tooling fixture, the grid part comprises a center disc at the center of the sleeve, the center disc extends downward, eight groups of reinforcing ribs are distributed annularly outside the center disc, a limiting disc is arranged below the center disc, and an airflow channel is arranged through the center of the center disc.

[0010] As a preferred scheme of the gas turbine combustor flame tube spraying tooling fixture, the end of the reinforcing rib is fixedly connected to the inner side of the arc-shaped plate, a flow channel exists between every two adjacent groups of the reinforcing ribs, and the flow channel is in communication with the inside of the sleeve, and gas can flow in the flow channel and the sleeve.

[0011] As a preferred scheme of the gas turbine combustor flame tube spraying tooling fixture, the clamping part comprises a sliding block in the limiting sliding slot, a clamping plate above the sliding block, a limiting clamping groove transversely arranged on the sliding block, engagement teeth uniformly distributed below the sliding block, a sliding clamping groove between every two adjacent groups of the engagement teeth, and a friction groove arranged on the inner wall of the clamping plate.

[0012] As a preferred scheme of the gas turbine combustor flame tube spraying tooling fixture, the limiting sheet is slidingly connected in the limiting clamping groove, and the sliding block is limited in the vertical direction by the limiting sheet, and the sliding block is limited by the arc-shaped plate on both sides, and can only translate and slide in the limiting sliding slot.

[0013] As a preferred scheme of the gas turbine combustor flame tube spraying tooling fixture, the adjusting part comprises a sleeve ring sleeved on the center disc, an adjusting disc outside the sleeve ring, eight groups of fixed rods annularly distributed between the sleeve ring and the adjusting disc with the sleeve ring as the center, a worm gear rack arranged on the adjusting disc, and multiple groups of teeth uniformly distributed on the outer wall of the adjusting disc.

[0014] As a preferred scheme of the gas turbine combustion chamber flame tube spraying tool clamp, wherein: the worm gear is in a worm structure, and the worm turns are two, the upper end of the worm gear is located in the sliding slot, and the two sides of the worm gear abut against the meshing teeth, the flow grooves are spaced between every two adjacent groups of the fixed rods, and the flow grooves are communicated with the flow-through grooves.

[0015] As a preferred scheme of the gas turbine combustion chamber flame tube spraying tool clamp, wherein: the driving part comprises two groups of fixed ears fixed below the arc-shaped plates, a rotating shaft transversely arranged between the two groups of fixed ears, a spiral gear helically wound on the rotating shaft, and the outer diameter of the spiral gear extends to the space between the teeth, and a knob fixedly arranged at one end of the rotating shaft.

[0016] The gas turbine combustion chamber flame tube can be stably and effectively clamped during the preparation of the inner surface thermal barrier coating, the stability during the spraying process is guaranteed, the channels for the air exchange between the inside and outside of the flame tube are increased through the grid design, the cooling efficiency of the flame tube wall is improved, the clamping and fixing range of the device can be adjusted according to the actual size of the flame tube port, and more use requirements can be met. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiment description will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings. Among them:

[0018] Fig. 1 is a schematic diagram of the overall structure of the gas turbine combustion chamber flame tube spraying tool clamp.

[0019] Fig. 2 is a schematic diagram of the structure of the clamping unit of the gas turbine combustion chamber flame tube spraying tool clamp.

[0020] Fig. 3 is a schematic diagram of the internal structure of the gas turbine combustion chamber flame tube spraying tool clamp.

[0021] Fig. 4 is a schematic diagram of the bottom view of the gas turbine combustion chamber flame tube spraying tool clamp.

[0022] Fig. 5 is a schematic diagram of the structure of the abutting part of the gas turbine combustion chamber flame tube spraying tool clamp.

[0023] Fig. 6 is a schematic diagram of the bottom view of the abutting part of the gas turbine combustion chamber flame tube spraying tool clamp.

[0024] Fig. 7 is a structural diagram of the clamping part of the gas turbine combustor flame tube spraying fixture clamp of the present application.

[0025] Fig. 8 is a structural diagram of the adjusting part of the gas turbine combustor flame tube spraying fixture clamp of the present application. DETAILED DESCRIPTION

[0026] In order to make the above objectives, features and advantages of the present application more apparent, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0027] In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, it will be apparent to one skilled in the art that the present application can be practiced without the specific details given herein, that the present application can be practiced with other than the described implementations, and that the present application can be practiced with or in conjunction with other systems, components, materials, acts, or events or in other environments. Therefore, the description herein is intended to be illustrative, but not limiting, of the scope of the application.

[0028] Secondly, the "one embodiment" or "an embodiment" as used in this specification means that a certain feature, structure, or characteristic described in connection with the embodiment can be included in at least one implementation of the present application. The appearances of the phrase "in one embodiment" or "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all referring to a single, special implementation of the present application.

[0029] Thirdly, the present application is described in detail with reference to the accompanying drawings. In the detailed description of the embodiments of the present application, the sectional views of the device structures are partially enlarged without the general scale for the convenience of description, and the accompanying drawings are only examples and should not limit the scope of protection of the present application. In addition, the three-dimensional spatial dimensions including length, width and depth should be included in the actual manufacture.

[0030] Example 1

[0031] Referring to FIG. 1-2, for the first embodiment of the present application, a kind of gas turbine combustion chamber flame tube spraying tooling fixture is provided, the device includes clamping unit 100, including the abutting part 101 of abutting at flame tube port, grid component 102 is arranged at the center position of abutting part 101, and the lower end of grid component 102 extends below abutting part 101, eight groups of clamping components 103 are arranged on abutting part 101, and are annularly distributed with grid component 102 as center, adjusting component 104 is arranged below abutting part 101, and is sleeved below grid component 102 at the center position, and driving component 105 is arranged on one side below abutting part 101, grid component 102 is fixedly connected at the center position of abutting part 101, adjusting component 104 is sleeved on grid component 102, and the two are in rotary connection, and clamping component 103 is slidably connected on clamping component 103, since temperature is too high in spraying work, so the whole tooling fixture is made of high-temperature stainless steel alloy or high-temperature alloy material which can resist temperature above 400 DEG C.

[0032] In use, the flame tube port is abutted on the abutting part 101, so that the grid component 102 is inserted into the flame tube, the adjusting component 104 is rotated to push the eight groups of clamping components 103 annularly distributed on the abutting part 101 to gradually approach and gather inward, the clamping components 103 approaching and gathering inward can abut the outer wall of the flame tube from eight directions, and finally clamp and fix the flame tube on the device, then the bottom end of the device grid component 102 is connected with the rotating shaft through bolts, so as to achieve the purpose of coaxial rotation with the rotating shaft, the rotating shaft is connected with the spraying workbench, so that the flame tube rotates coaxially with the spraying workbench, the spraying angle between the spray gun and the inner surface of the flame tube is always kept at 90°, and the stability and uniform speed of the flame tube are maintained during rotation, to realize the automatic spraying of the thermal barrier coating on the surface of the gas turbine turbine blade.

[0033] Embodiment 2

[0034] Referring to FIG. 5-6, for the second embodiment of the present application, the difference between this embodiment and the first embodiment is that the open connection clamp is connected with the flame tube, to provide a path for the internal and external air flow of the flame tube, and improve the heat dissipation efficiency.

[0035] Compared with embodiment 1, further, the abutting part 101 includes a sleeve 101a located above the grid component 102, eight groups of arc-shaped plates 101b annularly distributed below the sleeve 101a, a limiting sliding groove 101c located between every adjacent two groups of abutting parts 101, and a limiting sheet 101d arranged in the limiting sliding groove 101c, the inner end top surface of the eight groups of arc-shaped plates 101b is fixedly connected with the bottom of the sleeve 101a, but the bottom end of the sleeve 101a is not blocked, so that it still maintains the hollow tubular structure.

[0036] The sleeve 101a is a hollow circular tube structure, and the grid component 102 is arranged in the circular tube structure of the sleeve 101a. The limiting pieces 101d located in the limiting sliding grooves 101c are fixedly connected with the arc-shaped plates 101b on both sides, so that the eight sets of arc-shaped plates 101b are fixedly connected together through the eight sets of corresponding limiting pieces 101d.

[0037] In use, the sleeve 101a has a structure of thick upper part and thin lower part, facilitating the insertion of the flame tube. The clamping component 103 is located in the limiting sliding groove 101c and is limited by the arc-shaped plates 101b on both sides of the limiting sliding groove 101c, so that the clamping component 103 can only slide in the limiting sliding groove 101c. The inner end of the limiting sliding groove 101c extends to the sleeve 101a, so that when the clamping component 103 slides in the limiting sliding groove 101c in the inward or outward direction, the action of approaching or releasing the flame tube connected to the sleeve 101a can be completed.

[0038] The grid component 102 includes a center disc 102a located at the center of the sleeve 101a, eight sets of reinforcing ribs 102b arranged in a ring shape outside the center disc 102a, a limiting disc 102c arranged below the center disc 102a, and an airflow channel 102d arranged through the center of the center disc 102a.

[0039] The ends of the reinforcing ribs 102b are fixedly connected to the inner sides of the arc-shaped plates 101b. There is a flow-through groove 102e between each adjacent two sets of reinforcing ribs 102b, and the flow-through groove 102e is in communication with the inside of the sleeve 101a, so that the gas can flow in the flow-through groove 102e and the inside of the sleeve 101a.

[0040] In use, the bottom end of the limiting disc 102c is connected to the rotating shaft through a thread. An air extraction pipeline is arranged in the inside of the rotating shaft, the air extraction pipeline is in communication with the airflow channel 102d, the air extraction pipeline extends to the inside of the flame tube through the airflow channel 102d, and an air extraction pump is connected to the rear end of the air extraction pipeline, so as to inhibit the generation of turbulence of the spraying gas in the inside of the flame tube, improve the performance and quality of the thermal barrier coating, and facilitate the rapid flow of the gas in the inside of the flame tube, thereby assisting in cooling.

[0041] The remaining structure is the same as that of example 1.

[0042] Example 3

[0043] Referring to FIGS. 1-8, the third embodiment of the present application differs from the second embodiment in that the clamping component 103 is adjusted to converge to clamp and fix the port of the flame tube, and the clamping range is adjusted according to the size of the flame tube.

[0044] Further, compared with the second embodiment, the clamping component 103 includes a sliding block 103a located in the limiting sliding groove 101c, a clamping plate 103b arranged above the sliding block 103a, a limiting clamping groove 103c horizontally arranged on the sliding block 103a, engagement teeth 103d evenly distributed below the sliding block 103a, a sliding clamping groove 103e located between every adjacent two groups of engagement teeth 103d, and a friction groove 103f arranged on the inner wall of the clamping plate 103b, which directly contacts the outer wall of the flame tube to increase the friction therebetween, thereby further increasing the clamping fixing force of the clamping component 103 as a whole.

[0045] The limiting piece 101d is slidingly connected in the limiting clamping groove 103c, and the sliding block 103a is limited in the vertical direction by the limiting piece 101d. The two sides of the sliding block 103a are limited by the arc-shaped plate 101b, and can only translate and slide in the limiting sliding groove 101c.

[0046] The adjusting component 104 includes a sleeve ring 104a sleeved on the center disc 102a, an adjusting disc 104b located outside the sleeve ring 104a, eight groups of fixed rods 104c annularly distributed between the sleeve ring 104a and the adjusting disc 104b with the sleeve ring 104a as the center, a worm gear 104d arranged on the adjusting disc 104b, and multiple groups of teeth 104e evenly distributed on the outer wall of the adjusting disc 104b.

[0047] The worm gear 104d has a worm structure with two turns. The upper end of the worm gear 104d is located in the sliding clamping groove 103e, and the two sides of the worm gear 104d abut against the engagement teeth 103d. The flow grooves 104f are spaced between every adjacent two groups of fixed rods 104c, and the flow grooves 104f are in communication with the flow-through grooves 102e.

[0048] During use, when the adjusting component 104 rotates, the meshing teeth 103d below the clamping component 103 are pressed by the worm gear 104d of the adjusting component 104, at this time, the adjusting component 104 will exert a rotating forward force on the clamping component 103 as a whole through the spiral shape of the worm gear 104d, but the clamping component 103 is limited by the arc-shaped plate 101b on both sides, so that the clamping component 103 can only slide along the limiting sliding groove 101c, according to the rotating direction of the adjusting component 104, the clamping component 103 will make a gradually abutting clamping or releasing action away from the flame tube sleeved on the sleeve 101a, eight sets of clamping components 103 move synchronously, which can realize strong clamping and fixing of the flame tube, and at the same time, according to the number of rotations of the adjusting component 104, the distance of the clamping component 103 moving can be controlled, so as to achieve the purpose of adjusting the clamping range according to the size of the flame tube, and meet more use requirements.

[0049] Among them, the driving component 105 includes two groups of fixed ears 105a fixedly connected below a certain arc-shaped plate 101b, a rotating shaft 105b transversely arranged between the two groups of fixed ears 105a, a spiral gear 105c spirally wound on the rotating shaft 105b, and the outer diameter of the spiral gear 105c extends between the teeth 104e, and a knob 105d fixedly arranged at one end of the rotating shaft 105b.

[0050] During use, the spiral structure of the spiral gear 105c is engaged with the teeth 104e, when the rotating shaft 105b rotates, the spiral gear 105c will be rotated, and the rotating spiral gear 105c will press and push the teeth 104e, so that the adjusting component 104 as a whole is pushed and rotated with the center disc 102a as the center, and the rotating adjusting component 104 will push the clamping component 103 to make clamping or releasing action, and when the driving component 105 does not rotate, the spiral line shape of the spiral gear 105c will limit the teeth 104e, at this time, the teeth 104e are difficult to rotate due to the limitation, it can be known that the rotation of the adjusting component 104 cannot drive the rotation of the spiral gear 105c, so the spiral gear 105c can be one-way limited and fixed, thereby achieving the function of locking the working state of the clamping component 103.

[0051] The remaining structure is the same as that of example 2.

[0052] It is important to note that the construction and arrangement of the application shown in the various examples presented are illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review the present disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described herein. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements can be altered or varied. Thus, all such modifications are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be varied or re-sequenced without materially affecting the application. Any "apparatus" or "device" described herein can be a structure that performs the recited function, not necessarily composed of all the means or elements specifically disclosed. In the claims, any means-plus-function clause is intended to cover the structures described herein as performing the recited function and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes and omissions can be made in the design, operating conditions and arrangement of the exemplary embodiments without departing from the scope of the present application as expressed in the appended claims.

[0053] Also, for the purpose of providing a concise description of exemplary embodiments, not all features of an actual implementation can be described (i.e., those related to the

[0054] It should be noted that the above-mentioned embodiments are only used to illustrate the technical solutions of the present application, not to limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, which should be covered by the claims of the present application.

Claims

1. A gas turbine combustor flame tube spray tooling fixture, characterized by: The utility model relates to a flame tube clamping device, including, The abutment part (101) includes the sleeve pipe (101a) above the grid part (102), eight groups of arc-shaped plates (101b) are annularly distributed below the sleeve pipe (101a), the limiting sliding slot (101c) between every adjacent two groups of the abutment part (101), and the limiting sheet (101d) is arranged in the limiting sliding slot (101c).

2. The gas turbine combustor flame tube spray tooling fixture of claim 1, characterized by: The sleeve pipe (101a) is a hollow circular tube structure, and the grid part (102) is arranged in the circular tube structure of the sleeve pipe (101a), and the limiting sheet (101d) in the limiting sliding slot (101c) is fixedly connected with the arc-shaped plate (101b) on both sides.

3. The gas turbine combustor flame tube spray tooling fixture of claim 2, characterized by: The grid part (102) includes the center disc (102a) at the center position of the sleeve pipe (101a), and the center disc (102a) extends downward, eight groups of reinforcing ribs (102b) are annularly distributed outside the center disc (102a), the limiting disc (102c) is arranged below the center disc (102a), and the airflow channel (102d) is arranged through the center position of the center disc (102a).

4. The gas turbine combustor flame tube spray tooling fixture of claim 3, characterized by: The end of the reinforcing rib (102b) is fixedly connected to the inner side of the arc-shaped plate (101b), there is a flow-through groove (102e) between every adjacent two groups of the reinforcing rib (102b), and the flow-through groove (102e) is communicated with the inside of the sleeve pipe (101a), and gas can flow in the flow-through groove (102e) and the sleeve pipe (101a).

5. The gas turbine combustor flame tube spray tooling fixture of claim 4, characterized by: The clamping part (103) includes the sliding block (103a) in the limiting sliding slot (101c), the clamping plate (103b) arranged above the sliding block (103a), the limiting clamping groove (103c) horizontally opened on the sliding block (103a), the meshing tooth (103d) uniformly distributed below the sliding block (103a), the sliding clamping groove (103e) between every adjacent two groups of the meshing tooth (103d), and the friction groove (103f) opened on the inner wall of the clamping plate (103b).

6. The gas turbine combustor flame tube spray tooling fixture of claim 5, characterized by: ​ 7. The gas turbine combustor flame tube spray tooling fixture of claim 6, characterized by: The limiting sheet (101d) is slidingly connected in the limiting slot (103c), and the slider (103a) is limited in the vertical direction by the limiting sheet (101d), and the two sides of the slider (103a) are limited by the arc-shaped plate (101b), so that the slider (103a) can only translate and slide in the limiting slot (101c).

8. The gas turbine combustor flame tube spray tooling fixture of claim 7, characterized by: The adjusting component (104) comprises a sleeve ring (104a) sleeved on the center disc (102a), an adjusting disc (104b) located outside the sleeve ring (104a), eight groups of fixed rods (104c) distributed in a ring shape between the sleeve ring (104a) and the adjusting disc (104b) with the sleeve ring (104a) as the center, a worm gear rack (104d) arranged on the adjusting disc (104b), and multiple groups of teeth (104e) uniformly distributed on the outer wall of the adjusting disc (104b).

9. The gas turbine combustor flame tube spray tooling fixture of claim 8, characterized by: The worm gear rack (104d) has a worm structure and two worm turns, the upper end of the worm gear rack (104d) is located in the sliding slot (103e), and the two sides of the worm gear rack (104d) abut against the meshing teeth (103d), there is a flow groove (104f) between each adjacent two groups of fixed rods (104c), and the flow groove (104f) communicates with the flow-through groove (102e).

10. The gas turbine combustor flame tube spray tooling fixture of claim 9, characterized by: The driving component (105) comprises two groups of fixed ears (105a) fixedly connected below the arc-shaped plate (101b), a rotating shaft (105b) transversely arranged between the two groups of fixed ears (105a), a spiral gear rack (105c) spirally wound on the rotating shaft (105b), and the outer diameter of the spiral gear rack (105c) extends to between the teeth (104e), and a knob (105d) fixedly arranged at one end of the rotating shaft (105b).

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