A floating outer ring assembly method

Abstract

The application discloses a floating type outer ring assembling method, which comprises the following steps: numbering high-pressure turbine fixing rings, high-pressure turbine outer rings and clamping rings in sequence to form a group; assembling the numbered high-pressure turbine fixing rings on a high-pressure turbine casing assembly in a trial assembling process, and placing the high-pressure turbine fixing rings on platform equal-height blocks; assembling the high-pressure turbine outer rings corresponding to the numbers on the high-pressure turbine fixing rings, and assembling the outer ring blocks in sequence; assembling the clamping rings corresponding to the numbers on the outer ring blocks, measuring the gap size between the clamping rings and the high-pressure turbine outer rings, and making good gap data statistics; after the trial assembling, the same group is disassembled; after the high-pressure turbine fixing rings, the high-pressure turbine outer rings and the clamping rings are cleaned, the high-pressure turbine fixing rings, the high-pressure turbine outer rings and the clamping rings are assembled on the high-pressure turbine casing assembly in sequence according to the numbers, the gap is adjusted, the gap data is counted, and the outer ring assembling is completed.

Description

Technical Field

[0001] This invention belongs to the field of high-pressure turbine casing technology, specifically to a floating outer ring assembly method. Background Technology

[0002] The high-pressure turbine casing assembly consists of parts such as the high-pressure turbine casing, high-pressure vortex retaining ring, high-pressure vortex outer ring, high-pressure vortex retaining ring, and sealing plates. Their assembly relationship is as follows: Figure 1 As shown. Taking a high-pressure turbine casing assembly of a certain research model as an example, the outer ring assembly is a floating structure. Without fixing the outer ring, it is necessary to ensure the required circumferential clearance and the clearance between the outer ring and the retaining ring. During the assembly process of the high-pressure turbine casing assembly, the clearance between the outer rings needs to be adjusted using an aluminum rod or wooden hammer to ensure the required clearance size. A feeler gauge is placed between the retaining rings to prevent circumferential movement of the retaining rings. The clearance between the retaining rings is then adjusted using an aluminum rod or wooden hammer to ensure the required clearance size.

[0003] However, since the outer ring block cannot be fixed and must be assembled in one go, repeated adjustments are needed to ensure the clearance size. This can easily lead to unqualified local outer ring clearances after assembly, causing all outer ring blocks to be disassembled and reassembled. If this has a serious impact on the production schedule during subsequent batch processing, the reassembly of the outer ring block may cause changes in the clearance when assembling the high-pressure turbine casing assembly, affecting product quality and data accuracy. Moreover, the high-pressure turbine casing assembly is large in size, the assembly process is complex, and a large number of parts are involved. Therefore, it requires multiple people to work together for assembly, resulting in low assembly efficiency. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a floating outer ring assembly method to solve the problems in the background art. This invention facilitates ensuring the assembly gap size between the outer ring block and the retaining ring, improves assembly efficiency and product quality, and reduces labor costs.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A floating outer ring assembly method includes the following steps:

[0007] Step 1: Number the high-pressure turbine fixed ring, high-pressure turbine outer ring, and retaining ring in sequence, and group the high-pressure turbine fixed ring, high-pressure turbine outer ring, and retaining ring into one group;

[0008] Step 2: During the trial assembly, install the numbered high-pressure turbine retaining ring on the high-pressure turbine casing assembly and place the high-pressure turbine retaining ring on the platform level block;

[0009] Step 3: Assemble the high-pressure turbine outer ring with the corresponding number on the high-pressure turbine fixed ring, and assemble the outer ring blocks in sequence.

[0010] Step 4: Install the corresponding numbered retaining ring on the outer ring block, measure the clearance between the retaining ring and the high-pressure turbine outer ring, and compile clearance data statistics;

[0011] Step 5: After trial assembly, disassemble the high-pressure turbine retaining ring, high-pressure turbine outer ring, and retaining ring in the same group, and place the high-pressure turbine retaining ring, high-pressure turbine outer ring, and retaining ring in place;

[0012] Step 6: After cleaning, the high-pressure turbine fixed ring, high-pressure turbine outer ring and retaining ring are reassembled on the high-pressure turbine casing assembly. The high-pressure turbine fixed ring, high-pressure turbine outer ring and retaining ring are assembled in sequence according to the numbering order. The clearance is adjusted, the clearance data is counted, and the outer ring assembly is completed.

[0013] Preferably, in step 2, the installation gap of the high-pressure turbine fixing ring is 0.6±0.2mm.

[0014] Preferably, in step 2, during the trial assembly process, the high-pressure turbine fixing ring is placed on the platform's level blocks.

[0015] Preferably, in step 3, the installation gap of the high-pressure turbine outer ring is 0.6-1.2 mm.

[0016] Preferably, in step 4, the maximum gap between the retaining ring and the outer ring of the high-pressure turbine is 0.8 mm.

[0017] Preferably, in step 4, the gap size between the retaining ring and the outer ring of the high-pressure turbine is measured using a feeler gauge.

[0018] Preferably, in step 5, after the initial assembly is completed, the high-pressure turbine fixing ring, the high-pressure turbine outer ring, and the retaining ring are disassembled and cleaned according to the same group of numbers.

[0019] Preferably, in step 5, the high-pressure turbine fixing ring, the high-pressure turbine outer ring, and the retaining ring are fixed with plastic clips and placed in a plastic bag or cardboard box.

[0020] Preferably, in step 6, after assembling the high-pressure turbine retaining ring, the high-pressure turbine outer ring, and the retaining ring, the gap is adjusted by tapping with an aluminum rod or a wooden hammer.

[0021] Preferably, the high-pressure turbine retaining ring, the high-pressure turbine outer ring, and the retaining ring are made of the same material.

[0022] Compared with the prior art, the present invention has the following beneficial technical effects:

[0023] This invention provides a floating outer ring assembly method. By combining the outer ring, retaining ring, and fixing ring in the high-pressure turbine casing assembly into a whole and numbering them, the complexity of the parts assembly process is reduced, the assembly quality is improved, and the quality risks caused by dimensional changes during reassembly are eliminated. When the outer ring cannot be fixed during assembly, a group of parts are assembled simultaneously during the assembly process, avoiding the need for multiple people to work together, reducing labor costs, and improving assembly efficiency. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of a partial structure of the high-pressure turbine casing assembly;

[0025] Figure 2 A schematic diagram of the gap between the outer ring fixing ring of the high-pressure turbine secondary stage;

[0026] Figure 3 This is a schematic diagram of the gap between the outer ring and the retaining ring of the second stage of the high-pressure turbine.

[0027] In the attached diagram: 1 is the high-pressure turbine retaining ring; 2 is the high-pressure turbine outer ring; 3 is the retaining ring. Detailed Implementation

[0028] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0029] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a communication connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] It should be understood that, when used in this specification and the appended claims, the terms "comprising" and "including" indicate the presence of the described features, integrals, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components and / or collections thereof.

[0034] It should also be understood that the terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. As used in this specification and the appended claims, the singular forms “a,” “an,” and “the” are intended to include the plural forms unless the context clearly indicates otherwise.

[0035] It should also be further understood that the term "and / or" as used in this specification and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes such combinations.

[0036] The accompanying drawings illustrate various structural schematic diagrams according to embodiments disclosed in this invention. These drawings are not to scale, and some details have been enlarged for clarity, and some details may have been omitted. The shapes of the various regions and layers shown in the drawings, as well as their relative sizes and positional relationships, are merely exemplary and may deviate from reality due to manufacturing tolerances or technical limitations. Furthermore, those skilled in the art can design regions / layers with different shapes, sizes, and relative positions as needed.

[0037] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0038] This invention provides a floating outer ring assembly method, which involves numbering the retaining ring 3, the fixing ring, and the outer ring, and assembling the retaining ring 3, the outer ring fixing ring, and the outer ring block into a fixed group, thereby simultaneously ensuring the clearance requirements between retaining rings 3, between outer rings, and between fixing rings.

[0039] Example 1

[0040] This invention provides a method for assembling a floating outer ring, comprising the following steps:

[0041] Step 1: Number the retaining ring 3, the fixing ring, and the outer ring in sequence, and combine the retaining ring 3, the outer ring fixing ring, and the outer ring block into one group;

[0042] Step 2: During the trial assembly, install the numbered outer ring fixing ring on the high-pressure turbine casing assembly, and place the outer ring fixing ring of the high-pressure turbine casing assembly on the platform level block;

[0043] Step 3: Assemble the corresponding numbered outer rings on the fixed ring, and assemble the outer ring blocks in sequence;

[0044] Step 4: Install the corresponding numbered retaining ring 3 on the outer ring block, measure the gap between the retaining ring 3 and the outer ring with a feeler gauge, and record the gap data.

[0045] Step 5: After trial assembly, disassemble the retaining ring 3, outer ring fixing ring, and outer ring of the same group, and use plastic clips to simply fix the retaining ring 3, outer ring fixing ring, and outer ring, and place them in a plastic bag;

[0046] Step 6: After cleaning the parts, reassemble them on the high-pressure turbine casing assembly. Assemble the outer ring fixing ring, outer ring block, and retaining ring 3 in the order of their numbers. Adjust the gaps with an aluminum rod or a wooden hammer and record the gap data.

[0047] This invention provides a floating outer ring assembly method. The outer ring, retaining ring 3, and fixing ring in the high-pressure turbine casing assembly are combined into a whole. Numbering reduces the complexity of the parts assembly process, improves the assembly quality, and eliminates the quality risks caused by dimensional changes during reassembly. When the outer ring cannot be fixed during assembly, a group of parts are assembled simultaneously during the assembly process, avoiding the need for multiple people to work together, reducing labor costs, and improving assembly efficiency.

[0048] Example 2

[0049] Taking a certain research-oriented engine as an example, the steps are as follows:

[0050] (1) During the initial assembly process, the retaining ring 3, the high-vortex secondary outer ring fixing ring and the high-vortex secondary rotor outer ring are numbered sequentially;

[0051] (2) Sequentially install numbered high-pressure turbine secondary outer ring fixing rings onto the high-pressure turbine casing assembly, ensuring a clearance of 0.6 ± 0.2 mm (e.g., ...). Figure 2 (As shown), and place the high-pressure turbine casing assembly's high-vortex secondary outer ring fixing ring on the platform's equal-height blocks;

[0052] (3) Assemble the corresponding numbered high-vortex secondary rotor outer rings on the fixed ring of the high-vortex secondary rotor. Assemble the high-vortex secondary rotor outer rings sequentially according to their numbers, ensuring a gap of 0.6-1.2 mm between the outer ring blocks. Figure 3 (as shown);

[0053] (4) Assemble the corresponding numbered retaining rings 3 on the outer ring of the high-vortex secondary rotor, ensuring that the gap between the retaining rings 3 is 0.8 max (e.g., Figure 3 (as shown);

[0054] (5) After the initial assembly is completed, the retaining ring 3, the high vortex secondary outer ring fixing ring, and the high vortex secondary rotor outer ring are disassembled and cleaned according to the same group of numbers. The retaining ring 3, the high vortex secondary outer ring fixing ring, and the high vortex secondary rotor outer ring are simply fixed with plastic clips and placed in a plastic bag or cardboard box.

[0055] (6) During the reassembly process, the circlip 3, the high-pressure turbine second-stage outer ring fixing ring and the high-pressure turbine second-stage rotor outer ring are assembled simultaneously in the assembly components according to the original number;

[0056] (7) The gap can be adjusted with an aluminum rod or a wooden mallet, and the gap size should meet the requirements of the drawing.

[0057] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the scope of the invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0058] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art. The above content is only for illustrating the technical concept of the present invention and should not be construed as limiting the scope of protection of the present invention. Any modifications made based on the technical concept proposed in this invention shall fall within the scope of protection of the claims of this invention.

Claims

1. A floating outer ring assembly method, characterized in that, Includes the following steps, Step 1: Number the high-pressure turbine fixed ring (1), high-pressure turbine outer ring (2) and retaining ring (3) in sequence, and group the high-pressure turbine fixed ring (1), high-pressure turbine outer ring (2) and retaining ring (3) into one group; Step 2: During the trial assembly, install the numbered high-pressure turbine retaining ring (1) on the high-pressure turbine casing assembly and place the high-pressure turbine retaining ring (1) on the platform level block; Step 3: Assemble the high-pressure turbine outer ring (2) with the corresponding number on the high-pressure turbine fixed ring (1), and assemble the outer ring blocks in sequence; Step 4: Install the corresponding numbered retaining ring (3) on the outer ring block, measure the gap between the retaining ring (3) and the high-pressure turbine outer ring (2), and compile the gap data statistics; Step 5: After trial assembly, disassemble the high-pressure turbine fixing ring (1), high-pressure turbine outer ring (2) and retaining ring (3) in the same group, and place the high-pressure turbine fixing ring (1), high-pressure turbine outer ring (2) and retaining ring (3) in place; Step 6: After cleaning the high-pressure turbine fixed ring (1), high-pressure turbine outer ring (2) and retaining ring (3), reassemble them on the high-pressure turbine casing assembly. Assemble the high-pressure turbine fixed ring (1), high-pressure turbine outer ring (2) and retaining ring (3) in the order of their numbers, adjust the gaps, collect the gap data, and complete the outer ring assembly.

2. The floating outer ring assembly method according to claim 1, characterized in that, In step 2, the installation gap of the high-pressure turbine fixing ring (1) is 0.6±0.2mm.

3. The floating outer ring assembly method according to claim 1, characterized in that, In step 2, during the trial assembly process, the high-pressure turbine fixing ring (1) is placed on the platform's level block.

4. The floating outer ring assembly method according to claim 1, characterized in that, In step 3, the installation gap of the high-pressure turbine outer ring (2) is 0.6-1.2mm.

5. The floating outer ring assembly method according to claim 1, characterized in that, In step 4, the maximum gap between the retaining ring (3) and the outer ring (2) of the high-pressure turbine is 0.8 mm.

6. The floating outer ring assembly method according to claim 1, characterized in that, In step 4, the gap size between the retaining ring (3) and the outer ring (2) of the high-pressure turbine is measured with a feeler gauge.

7. The floating outer ring assembly method according to claim 1, characterized in that, In step 5, after the initial assembly is completed, the high-pressure turbine fixing ring (1), the high-pressure turbine outer ring (2) and the retaining ring (3) are disassembled and cleaned according to the same group of numbers.

8. The floating outer ring assembly method according to claim 1, characterized in that, In step 5, the high-pressure turbine fixing ring (1), the high-pressure turbine outer ring (2) and the retaining ring (3) are fixed with plastic clips and placed in a plastic bag or cardboard box.

9. The floating outer ring assembly method according to claim 1, characterized in that, In step 6, after assembling the high-pressure turbine retaining ring (1), the high-pressure turbine outer ring (2), and the retaining ring (3), the gap is adjusted by tapping with an aluminum rod or a wooden hammer.

10. The floating outer ring assembly method according to claim 1, characterized in that, The high-pressure turbine fixed ring (1), high-pressure turbine outer ring (2) and retaining ring (3) are made of the same material.

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