CN117900818A - Assembly method and assembly tool for ceramic matrix composite spray pipe component - Google Patents
Assembly method and assembly tool for ceramic matrix composite spray pipe component Download PDFInfo
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- CN117900818A CN117900818A CN202311702617.3A CN202311702617A CN117900818A CN 117900818 A CN117900818 A CN 117900818A CN 202311702617 A CN202311702617 A CN 202311702617A CN 117900818 A CN117900818 A CN 117900818A
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- 239000007921 spray Substances 0.000 title claims abstract description 104
- 239000011153 ceramic matrix composite Substances 0.000 title claims abstract description 29
- 238000000034 method Methods 0.000 title claims abstract description 22
- 230000003014 reinforcing effect Effects 0.000 claims description 98
- 230000002787 reinforcement Effects 0.000 claims description 21
- 238000003825 pressing Methods 0.000 claims description 19
- 238000005553 drilling Methods 0.000 claims description 11
- 238000009434 installation Methods 0.000 claims description 6
- 238000004026 adhesive bonding Methods 0.000 claims description 4
- 238000000151 deposition Methods 0.000 claims description 4
- 230000008021 deposition Effects 0.000 claims description 4
- 238000005229 chemical vapour deposition Methods 0.000 claims description 3
- 238000005498 polishing Methods 0.000 claims description 3
- 238000009825 accumulation Methods 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 239000003292 glue Substances 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 238000003754 machining Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011216 ultra-high temperature ceramic matrix composite Substances 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
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Abstract
The invention relates to the assembly of a ceramic matrix composite spray pipe, in particular to an assembly method and an assembly tool for ceramic matrix composite spray pipe components, and aims to solve the defects that the conventional building block type assembly spray pipe components are easy to cause tolerance accumulation, lack control on the diagonal relation and are difficult to meet the requirement of assembly precision.
Description
Technical Field
The invention relates to assembly of a ceramic matrix composite spray pipe, in particular to an assembly method and an assembly tool of a ceramic matrix composite spray pipe component.
Background
The ceramic matrix composite is a novel strategic material, has the characteristics of high temperature resistance, low density, high specific strength, high specific modulus, oxidation resistance, ablation resistance, insensitivity to cracks, no catastrophic damage and the like, and has wide application in the fields of aviation, aerospace, satellite aerospace, nuclear energy, photovoltaics and the like. In recent years, with the development of high-performance engines, in order to increase the thrust-weight ratio of the engine and continuously increase the temperature of a combustion chamber, the existing alloy materials cannot meet the high-temperature resistance requirement of a new generation of engine spray pipe components, but the high-temperature resistance of the ultrahigh-temperature ceramic matrix composite material is outstanding, so that the ultrahigh-temperature ceramic matrix composite material is developed into an important manufacturing material of the high-performance engine spray pipe components.
The prior ceramic matrix composite spray pipe component is assembled by a 3DN rotary spray pipe main body, a 2D flange component (for short, a flange component) and a reinforcement box component, wherein the flange component and the reinforcement box component are used as bearing components and are connected with the spray pipe main body through composite pins. Because of the angular relation among the reinforcing box component, the flange component and the spray pipe main body, angular positioning errors are easy to generate, the spray pipe component has higher requirements on the mounting angular direction and the connecting hole position precision of the flange component and the reinforcing box component in the assembly process, the use strength of the spray pipe component needs to be ensured, and meanwhile, the connection precision of the spray pipe component and an engine and the punching precision of a composite pin hole are ensured. The traditional assembly method adopts building block assembly, which is easy to cause tolerance accumulation, and the diagonal relation is lack of control, so that the requirements are difficult to ensure.
Disclosure of Invention
The invention aims to solve the defects that the prior building block type spray pipe component is easy to cause tolerance accumulation, the diagonal relation is lack of control, and the requirement of assembly precision is difficult to meet.
In order to achieve the above purpose, the technical solution provided by the present invention is as follows:
The assembling method of the ceramic matrix composite spray pipe component is characterized by comprising the following steps of:
Step 1, fixing a flange assembly on a bottom plate, and processing the inner profile of the flange assembly to enable the inner profile to be consistent with the outer profile of the corresponding position of the spray pipe main body; the flange assembly comprises one or more layers of flanges, each layer of flange is formed by splicing at least two arc-shaped structures, the flanges are temporarily fixed by adopting cementing, and the flange assembly is removed after the processing is completed;
fixing a reinforcing box assembly on the bottom plate, and processing the inner surface of the reinforcing box assembly to enable the inner surface of the reinforcing box assembly to be consistent with the outer surface of the corresponding position of the spray pipe main body; the reinforcing box assembly is formed by sequentially arranging N reinforcing boxes, N is more than or equal to 8, the side walls of two adjacent reinforcing boxes are mutually attached, the reinforcing boxes are temporarily fixed by adopting gluing, and the reinforcing box assembly is removed after the processing is completed;
step 2, installing a spray pipe main body on the bottom plate, wherein the small end of the spray pipe main body faces the bottom plate and is attached to the bottom plate;
Step 3, installing and repairing the flange assembly: sequentially assembling one layer of flange or a plurality of layers of flanges to the outer side of the small end of the spray pipe main body, attaching the inner molded surface of the flange or the plurality of layers of flanges to the outer molded surface of the spray pipe main body, and repairing the outer molded surface of the flange component;
Step 4, installing and repairing the reinforcing box component: dividing the reinforcing boxes into four groups along the circumference, firstly installing two groups which are oppositely arranged and repairing the two groups, then installing the other two groups of reinforcing boxes and repairing the two groups of reinforcing boxes, attaching the inner molded surface of the reinforcing boxes to the outer molded surface of the spray pipe main body, and temporarily fixing the reinforcing boxes by adopting glue joint after the installation is finished;
and 5, drilling holes on the spray pipe main body, the flange assembly and the reinforcing box assembly by using a drilling template, obtaining pin connecting holes corresponding to each other, riveting and fixing by using pins, then placing the pin connecting holes into chemical vapor deposition equipment for deposition, polishing and flattening pin heads after the deposition is completed, and completing the integral assembly of the spray pipe component.
In step 3, the fit clearance between the inner molded surface of the flange and the outer molded surface of the nozzle main body is less than or equal to 0.05mm.
Further, in the step 1, the flange assembly comprises a plurality of layers of flanges, and the plurality of layers of flanges are sequentially installed from bottom to top; the lower end face of the first layer of flange is attached to the bottom plate, the attaching gap is less than or equal to 0.05mm, and the attaching gap of the adjacent arc-shaped structures is less than or equal to 0.05mm.
Further, in step 1, the reinforcing box comprises an arc-shaped flat plate arranged at the bottom, two side plates oppositely arranged at two ends of the arc-shaped flat plate and an arc-shaped backboard arranged between the two side plates, wherein the inner side surface of the arc-shaped backboard is used for being attached to the outer surface of the spray pipe main body; the N reinforcement boxes are sequentially arranged, the side plates of adjacent reinforcement boxes are mutually attached, and the attaching gap is less than or equal to 0.05mm; the fit clearance between the inner surface of the reinforcement box and the outer surface of the spray pipe main body is less than or equal to 0.05mm.
Meanwhile, the assembly fixture of the ceramic matrix composite spray pipe component is also provided, and is used for realizing the assembly method of the ceramic matrix composite spray pipe component, and is characterized in that:
The device comprises a bottom plate, a spray pipe outer pressure ring, at least three spray pipe positioning blocks, one or more second limiting blocks, a plurality of first limiting blocks, a plurality of reinforcing box pressure plates, a plurality of second positioning blocks and a plurality of first positioning blocks;
the bottom plate is a mounting base of the spray pipe component and provides support for the assembly process; the middle part of the bottom plate is provided with a positioning ring groove;
the spray pipe outer pressure ring is coaxially arranged above the positioning ring groove and is detachably connected with the bottom plate through a connecting piece; the inner side wall of the spray pipe outer compression ring is matched with the outer molded surface in the middle of the spray pipe main body and used for compressing and fixing the spray pipe main body;
The spray pipe positioning blocks are positioning tools of the spray pipe main body, at least three spray pipe positioning blocks are uniformly distributed on the periphery of the positioning ring groove along the circumference, and the outer side surfaces of the spray pipe positioning blocks are matched with the inner molded surfaces corresponding to the small ends of the spray pipe main body so as to ensure the relative positions of the spray pipe main body on the bottom plate;
The second limiting block is arranged on the outer side of the positioning ring groove and used as a circumferential mounting reference of the 1 st arc-shaped structure of each layer of flange, and the second limiting block is detachably connected with the bottom plate;
The first limiting blocks are detachably connected with the bottom plate and are positioned on the outer side of the positioning ring groove and serve as a reference for mounting the reinforcing box;
the reinforcing box pressing plate is a plurality of arc plates and is used for being arranged on the periphery of the positioning ring groove to press the assembled reinforcing box;
the second positioning block and the first positioning block are of cylindrical or barrel-shaped structures and are coaxially arranged with the positioning ring groove, and the outer side surfaces of the second positioning block and the first positioning block are used for positioning the inner profile surfaces of the flange component and the reinforcing box component respectively.
Further, the drilling jig comprises a drilling jig plate, wherein the drilling jig plate is used for forming corresponding pin connection holes on the spray pipe main body, the flange component and the reinforcing box component;
The annular boss is coaxially arranged with the positioning ring groove and positioned at the periphery of the positioning ring groove, the inner diameter of the annular boss is larger than the minimum inner diameter of the flange assembly, the outer diameter of the annular boss is larger than the maximum outer diameter of the flange assembly, a limiting groove is radially arranged on the annular boss corresponding to the connecting position of the adjacent arc-shaped structures in each layer of flange, and the second limiting block is arranged in the limiting groove; the spray pipe positioning block is positioned between the positioning ring groove and the annular boss.
Further, the connecting piece is an elongated screw;
The inner diameter of the annular boss is 0-1mm larger than the minimum inner diameter of the flange assembly, and the outer diameter of the annular boss is 5-10mm larger than the maximum outer diameter of the flange assembly;
the second limiting block is a flat plate which is longitudinally arranged, the lower end of the flat plate is inserted into the limiting groove, and the side surface of the flat plate is used as a circumferential mounting reference of the 1 st arc-shaped structure of the corresponding flange;
And bosses matched with the positioning ring grooves are arranged at the bottoms of the second positioning block and the first positioning block and are used for positioning the positioning ring grooves.
Further, the flange assembly comprises a first flange, a second flange and a third flange which are sequentially overlapped from the bottom plate upwards, and each layer of flange comprises three arc structures; the second limiting block comprises a first layer of second limiting block, a second layer of second limiting block and a third layer of second limiting block which correspond to the first flange, the second flange and the third flange respectively;
The limiting grooves on the bottom plate are respectively arranged corresponding to the splicing surfaces of the three arc-shaped structures in each layer of flange, the digital identifications 1,2 and 3 are respectively carved on the splicing surfaces corresponding to the first flange, the second flange and the third flange, and the avoiding grooves are formed in the inner sides of the plates of the two-layer second limiting block and the three-layer second limiting block.
Further, the first limiting block comprises a connecting plate which is transversely arranged and a longitudinal flat plate which is connected with the connecting plate, the connecting plate is connected with the bottom plate through bolts and pins, and the longitudinal flat plate is used as a circumferential reference surface of the reinforcing box to limit the side plate of the reinforcing box;
The inner side of the reinforcement box pressing plate is provided with a plurality of grooves, the reinforcement box pressing plate is used for pressing and fixing the arc-shaped flat plate at the bottom of the reinforcement box, and the grooves are used for accommodating the side plates of the corresponding reinforcement box when the reinforcement box is pressed.
Further, the plurality of first limiting blocks are divided into at least two groups, each group comprises two first limiting blocks, namely a left first limiting block and a right first limiting block, and the two first limiting blocks are used for limiting the middle reinforcing box; the longitudinal flat plate of the left first limiting block is used as an initial circumferential reference surface of the reinforcing boxes.
The invention has the beneficial effects that:
1. The invention provides an assembling method and an assembling tool for a ceramic matrix composite spray pipe component, which are used for assembling a spray pipe main body, a reinforcing box and a flange component, and solve the problem that the mounting angle direction and the connecting hole position precision of the flange component and the reinforcing box are required to be higher in the assembling process of the spray pipe component from multiple angles, so that the problem that the ceramic matrix composite spray pipe component generates assembling errors in the assembling process and cannot meet the design requirements is avoided, and the assembling precision of the ceramic matrix composite spray pipe component is improved.
2. The ceramic matrix composite is prepared from silicon carbide or carbon cloth lamination, and the flange assembly is layered, the reinforcing box assembly is assembled in groups, so that the problems of excessive wall thickness repair, carbon cloth fault and layering of a single structure caused by tolerance accumulation in the traditional assembly can be solved; the tolerance of each group of parts is limited in a certain range, so that the requirement on the machining precision of a single part is reduced, the problem that the machining precision of a single structure is too high in the existing method, so that the machining difficulty is high or the machining cost is high is solved, and the production progress can be greatly improved; meanwhile, the tolerance of each layer of flange and each group of reinforcing boxes is controlled respectively through tool limiting, the tolerance can be allocated to each part of the repair adjustment quantity during assembly, tolerance accumulation is not easy to occur, the relative positions of the flange component, the reinforcing box component and the spray pipe main body are always in a required range, and therefore the integral assembly precision cannot be affected.
3. The assembly fixture provided by the invention is provided with the positioning and compressing fixing parts, can be used as a processing fixture for parts, and effectively reduces the production cost.
4. The assembly fixture provided by the invention adopts a quick-dismantling positioning and bolt fixing mode, is convenient to disassemble and can be exchanged, and the universality and the light weight of the fixture are realized.
Drawings
FIG. 1 is a schematic diagram of a final assembly structure of a nozzle member and an assembly fixture in an embodiment of the present invention;
FIG. 2 is a schematic view of the assembly of the reinforcing box assembly according to the embodiment of the present invention;
FIG. 3 is a schematic view of an assembly of a flange assembly according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a pressing structure of a pressing plate of a reinforcing box according to an embodiment of the present invention;
FIG. 5 is a schematic view of a positioning block of a nozzle according to an embodiment of the present invention;
FIG. 6 is a schematic view of a drill plate according to an embodiment of the present invention;
Reference numerals illustrate:
100-jet pipe main body, 200-reinforcement box assembly, 210-reinforcement box, 300-flange assembly, 400-drill plate, 010-jet pipe external pressure ring, 020-bottom plate, 021-positioning ring groove, 022-annular boss, 030-lengthening screw, 040-first positioning block, 050, 052-left first limiting block, 051, 053-right first limiting block, 060-second positioning block, 070-one layer second limiting block, 071-two layer second limiting block, 072-three layer second limiting block, 080-reinforcement box pressing plate and 090-jet pipe positioning block.
Detailed Description
The invention relates to a ceramic matrix composite spray pipe component assembly fixture which is used for assembling spray pipe components, as shown in fig. 1 to 5, and comprises a bottom plate 020, an elongated screw 030, a spray pipe outer pressure ring 010, a plurality of spray pipe positioning blocks 090, a plurality of second limiting blocks, a plurality of first limiting blocks, a plurality of reinforcing box pressing plates 080, a plurality of second positioning blocks 060 and a plurality of first positioning blocks 040; the spray pipe component assembly fixture is made of hard aluminum or carbon steel materials, and hanging rings are respectively arranged at four corners of the bottom plate 020 and used for moving the bottom plate 020 or the assembly fixture.
The nozzle member includes a nozzle body 100, a flange assembly 300 provided at the outer circumference of the small end of the nozzle body 100, and a reinforcing box assembly 200. The flange assembly 300 includes a first flange, a second flange, and a third flange that are sequentially stacked, each formed by splicing three arc structures. The stiffening box assembly 200 consists of N stiffening boxes 210, n=24, in other embodiments of the invention n+.8. The reinforcement box 210 includes an arc-shaped flat plate disposed at the bottom, two side plates disposed at two ends of the arc-shaped flat plate, and an arc-shaped back plate disposed between the two side plates, wherein the arc-shaped flat plate is similar to a fan shape, the N reinforcement boxes 210 are sequentially disposed to form a circular ring, the side plates of adjacent reinforcement boxes 210 are mutually attached, and the inner side surfaces of the N arc-shaped back plates form the inner molded surface of the reinforcement box assembly 200.
The bottom plate 020 is an installation base of the spray pipe component and is used for supporting an assembly process, and a plurality of limit grooves, a plurality of bolt holes and a plurality of pin holes are formed in the bottom plate and are used for being connected with the lengthened screw 030, the spray pipe positioning block 090, the second limiting block, the first limiting block, the reinforcing box pressing plate 080, the second positioning block 060 and the first positioning block 040. As shown in fig. 5, the middle part of the bottom plate 020 is provided with a positioning ring groove 021 and an annular boss 022 coaxial with the positioning ring groove 021 and located at the outer periphery thereof. The inner diameter of the annular boss 022 is larger than the minimum inner diameter of the flange assembly 300, and the outer diameter is larger than the maximum outer diameter of the flange assembly 300, and preferably, the inner diameter of the annular boss 022 is 0-1mm larger than the minimum inner diameter of the flange assembly 300, and the outer diameter is 5-10mm larger than the maximum outer diameter of the flange assembly 300. The center of the bottom plate 020 is provided with a lightening hole.
The outer pressure ring 010 of the spray pipe is connected with the bottom plate 020 through the lengthened screw 030 and is coaxially arranged with the positioning ring groove 021, the inner side wall of the outer pressure ring 010 of the spray pipe is matched with the outer molded surface in the middle of the spray pipe main body 100, and the outer pressure ring 010 of the spray pipe is a position limiting tool of the spray pipe main body 100 and is used for limiting the axial movement and rotation of the spray pipe main body 100 along the bottom plate 020 and compacting and fixing the spray pipe main body 100.
The plurality of nozzle positioning blocks 090 are positioning tools of the nozzle main body 100, at least three nozzle positioning blocks 090 are arranged and are circumferentially and uniformly distributed on the bottom plate 020 between the positioning ring groove 021 and the annular boss 022, and the outer side surface of the nozzle positioning blocks 090 is matched with the inner molded surface corresponding to the small end of the nozzle main body 100 so as to ensure the relative position of the nozzle main body 100 on the bottom plate 020.
The annular boss 022 is provided with a limit groove along the radial direction corresponding to the connecting position of the adjacent arc-shaped structures in each layer of flange, when the flange assembly 300 is assembled, the annular boss 022 is provided with a second limit block which is a flat plate arranged longitudinally, the lower end of the flat plate is inserted into the limit groove, and the side surface of the flat plate is used as a circumferential installation reference of the 1 st arc-shaped structure of the corresponding flange. In this embodiment, the first flange, the second flange and the third flange are sequentially overlapped by the bottom plate 020, the second limiting block comprises a layer of second limiting block 070, a layer of second limiting block 071 and a layer of third limiting block 072 which are respectively corresponding to the second limiting block, the splicing surfaces of the limiting grooves corresponding to the first flange, the second flange and the third flange are respectively engraved with digital marks 1,2 and 3 for distinguishing the installation positions of different second limiting blocks, and the inner sides of the flat plates of the layer of second limiting block 071 and the layer of third limiting block 072 are provided with avoiding grooves; the lower end of the first layer of second limiting block 070 is attached to the bottom plate 020, and the lower ends of the second layer of second limiting block 071 and the third layer of second limiting block 072 are attached to the upper end face of the flange at the lower layer of the second limiting block 072. In other embodiments of the present invention, the number of flanges included in the flange assembly 300 and the number of arc structures of each layer of flange can be adjusted according to needs, the number of arc structures is at least two, so that subsequent installation is facilitated, and the number of second limiting blocks and corresponding structures are adjusted according to the number of flanges.
The first limiting blocks are located on the outer side of the positioning ring groove 021 and are divided into at least two groups, each group comprises two first limiting blocks, namely left first limiting blocks 50 and 52 and left first limiting blocks 51 and 53, and are used for limiting the reinforcing box 210 in the middle of the first limiting blocks, each first limiting block comprises a connecting plate which is horizontally arranged and a longitudinal flat plate which is vertically arranged, the connecting plate is connected with the bottom plate 020 through bolts and pins, the longitudinal flat plates serve as mounting references of the reinforcing box 210, the setting angles of the longitudinal flat plates of the left first limiting blocks 50 and 52 and the left first limiting blocks 51 and 53 are consistent with the setting angles of the side plates of the reinforcing box 210 attached to the left first limiting blocks, and the mounting positions of the first limiting blocks are distinguished through pin positioning holes which are formed in the bottom plate 020. The stiffening box clamp plate 080 is a pressing tool of the stiffening box 210, the stiffening box clamp plate 080 is an arc plate, a plurality of grooves are formed in the inner side edge of the stiffening box clamp plate 080, as shown in fig. 4, after the stiffening box 210 is installed at a required position, the arc-shaped flat plate at the bottom of the stiffening box 210 is pressed and fixed by the stiffening box clamp plate 080, and the plurality of grooves in the inner side edge of the stiffening box clamp plate 080 are respectively and correspondingly arranged with the side plate of the corresponding stiffening box 210 and are used for accommodating the side plate of the corresponding stiffening box 210.
The drill jig plate 400 is an auxiliary hole making tool for pin connection holes on the spray pipe component and is used for ensuring that the hole positions of the pin connection holes on the spray pipe component are accurate.
The second positioning block 060 and the first positioning block 040 are cylindrical or barrel-shaped structures, and are respectively provided with the flange assembly 300 and the reinforcing box 210, the outer side surfaces of the second positioning block 060 and the first positioning block 040 are respectively used for positioning the inner surfaces of the flange assembly 300 and the reinforcing box assembly 200, and the inner surfaces of the second positioning block 060 and the first positioning block 040 are processed to remove the difference of molded surfaces caused by the separation processing of the flange assembly 300 and the reinforcing box assembly 200, and the inner surfaces of the second positioning block 040 can be attached to the outer surfaces of the spray pipe main body 100 after being processed. The second positioning block 060 and the first positioning block 040 are coaxially arranged with the positioning ring groove 021, and the bottoms of the second positioning block 060 and the first positioning block 040 are respectively provided with a boss matched with the positioning ring groove 021 for positioning the second positioning block 040 and the first positioning block 040.
The assembly fixture further comprises a drill plate 400 as shown in fig. 6, and after each assembly is fixed to a required position, the drill plate 400 is used as an auxiliary hole making fixture for pin connection holes so as to ensure accurate hole positions of the pin connection holes on the spray pipe main body 100, the flange assembly 300 and the reinforcing box assembly 200.
The invention discloses a method for assembling a ceramic matrix composite spray pipe component, which adopts the assembly fixture and specifically comprises the following steps:
Step 1: as shown in fig. 2, the first positioning block 040 is mounted to the bottom plate 020 by a pin hole site and fixed by bolting. The inner surface of the reinforcing box assembly 200 is attached to the outer surface of the first positioning block 040, and the attaching gap is less than or equal to 0.1mm. And then, adopting 502 glue to temporarily glue and fix the reinforcing box assembly 200, removing the first positioning block 040, integrally repairing the inner profile of the reinforcing box assembly 200 to ensure that the inner profile of the reinforcing box assembly 200 is consistent with the outer profile of the corresponding position of the spray pipe main body 100, and ensuring that the profile of the inner profile of the reinforcing box assembly 200 is consistent so as to remove the integral profile difference caused by different states after single part processing. The side plates of adjacent reinforcing boxes 210 are mutually attached, and the attaching gap is less than or equal to 0.05mm; the bonding gap between the inner surface of the reinforcing box 210 and the outer surface of the nozzle body 100 is less than or equal to 0.05mm.
As shown in fig. 3, the second positioning block 060 is mounted on the bottom plate 020 by a pin hole site and is fixed by a bolt connection. The inner surface of the flange assembly 300 is attached to the outer surface of the second positioning block 060, and the attaching gap is less than or equal to 0.1mm. And then, adopting 502 glue to temporarily glue and fix the flange assembly 300, removing the second positioning block 060, and integrally repairing the inner surface of the flange assembly 300 to ensure that the inner surface of the flange assembly 300 is consistent with the outer surface of the corresponding position of the spray pipe main body 100, thereby ensuring that the surface profile of the inner surface of the flange assembly 300 is consistent. The lower end face of the first layer flange is attached to the bottom plate 020, the attaching gap is less than or equal to 0.05mm, and the attaching gap of the adjacent arc-shaped structures is less than or equal to 0.05mm.
Step 2: as shown in FIG. 5, the nozzle positioning block 090 is installed, and then the nozzle main body 100 is installed, so that the inner shape of the small end of the nozzle main body 100 is attached to the outer shape of the nozzle positioning block 090, and the attaching gap is less than or equal to 0.05mm.
Step 3: as shown in fig. 1, the nozzle outer pressure ring 010 is disposed outside the nozzle body 100, and the nozzle outer pressure ring 010 is connected to the bottom plate 020 by the extension screw 030, and the nozzle outer pressure ring 010 is used for pressing the nozzle body 100, so as to limit the movement and rotation of the nozzle body 100 on the bottom plate 020 along the axis.
Step 4: as shown in fig. 3, a first flange of the 1 st layer is firstly repaired, a layer of second limiting block 070 is inserted into one of limit grooves carved with the number 1, the side surface of the layer of second limiting block 070 is taken as an initial circumferential reference surface of an arc structure of the first flange, the 1 st arc structure is arranged, the joint gap between the left side surface of the first arc structure and the side surface of the layer of second limiting block 070 is less than or equal to 0.05mm, the joint gap between the inner surface of the first arc structure and the outer surface of the spray pipe main body 100 is less than or equal to 0.05mm, the joint gap between the lower end surface of the first arc structure and the bottom plate 020 is less than or equal to 0.05mm, and then the right side surface of the first arc structure is repaired to be coplanar with the right groove surface of the limit groove carved with the number 1. And then the right side surface of the 1 st arc structure of the 1 st layer is used as a circumferential reference, the 2 nd arc structure of the 1 st layer is repaired, the left side surface of the 2 nd arc structure is butted with the right side surface of the 1 st arc structure, the butting gap is less than or equal to 0.05mm, the bonding gap between the inner surface of the arc structure and the outer surface of the spray pipe main body 100 is less than or equal to 0.05mm, the bonding gap between the lower end surface of the arc structure and the bottom plate 020 is less than or equal to 0.05mm, and the arc structure is coplanar with the right groove surface of the next limit groove carved with the number 1. And finally, taking out a layer of second limiting block 070, repairing the 3 rd arc-shaped structure into the middle of the 1 st arc-shaped structure and the 2 nd arc-shaped structure, and finishing the assembly of the first flange, wherein the butt joint gap between the 3 rd arc-shaped structure and the 1 st arc-shaped structure and the 2 nd arc-shaped structure is less than or equal to 0.05 mm. After the assembly is completed, the upper end face of the first flange is used as a bottom surface reference, two layers of second limiting blocks 071 are inserted into limiting grooves engraved with the number 2 to serve as initial circumferential references to install the second flanges, the assembly method is the same as that of the first layer, then the third flanges are sequentially installed, the third flanges use three layers of second limiting blocks 072 as initial circumferential references, and the assembly of the flange assembly 300 is completed after the assembly is completed. After the flange assembly 300 is installed, temporary glue joint fixation is performed by using 502.
Step 5: the reinforcing boxes 210 are assembled in a grouping assembly. As shown in fig. 2, in this embodiment, 24 reinforcing boxes 210 are divided equally into four groups of 6 reinforcing boxes 210 each, and the reinforcing boxes 210 are repaired by groups, so as to ensure that the repairing amount is evenly distributed to the parts in the groups. Two groups of first limiting blocks are installed according to different pin positioning holes, and the two groups of first limiting blocks correspond to two groups of reinforcing boxes 210 which are oppositely arranged respectively.
Firstly, 6 reinforcing boxes 210 between each group of first limiting blocks are installed, longitudinal flat plates of left first limiting blocks 50 and 52 are used as initial circumferential reference surfaces of the reinforcing boxes 210, the upper end surfaces of third flanges are used as bottom references, the reinforcing boxes 210 are installed in sequence, the attaching gap between two adjacent reinforcing boxes 210 is less than or equal to 0.05, the inner surfaces of the reinforcing boxes 210 are attached to the outer surface of the spray pipe main body 100, the attaching gap is less than or equal to 0.05, and finally, among the 6 reinforcing boxes 210, the outer side surfaces of side plates of the reinforcing boxes 210 at two ends are attached to the reference surfaces of the corresponding left first limiting blocks 50 and 52 and the left first limiting blocks 51 and 53 respectively, and the attaching gap is less than or equal to 0.1mm. The reinforcing box 210 is then pressed and fixed using the reinforcing box pressing plate 080 so that the reinforcing box 210 mounted to the desired position is not moved any more.
Next, the first stopper is removed, and the remaining reinforcing boxes 210 are sequentially installed and repaired with the side surfaces of the relatively installed reinforcing boxes 210 as a circumferential reference. After finishing the repair, the reinforcing box pressing plate 080 is used for pressing and fixing, then 502 is used for temporary cementing and fixing, and the reinforcing box pressing plate 080 is removed.
Step 6: and (3) drilling holes among the components by using the drilling template 400 to obtain corresponding pin connecting holes, riveting and fixing by using pins, then placing the riveted reinforcing box component 200, flange component 300 and nozzle main body 100 into chemical vapor deposition equipment to deposit for one time, and polishing to level pin heads to complete the integral assembly of the ceramic matrix composite nozzle component.
Claims (10)
1. The assembling method of the ceramic matrix composite spray pipe component is characterized by comprising the following steps of:
Step 1, fixing a flange assembly (300) on a bottom plate (020), and processing the inner surface of the flange assembly to enable the inner surface to be consistent with the outer surface of the corresponding position of a spray pipe main body (100); the flange assembly (300) comprises one or more layers of flanges, each layer of flange is formed by splicing at least two arc-shaped structures, the flanges are temporarily fixed by adopting gluing, and the flange assembly (300) is detached after the processing is completed;
a reinforcing box assembly (200) is fixed on the bottom plate (020), and the inner profile of the reinforcing box assembly is processed to be consistent with the outer profile of the corresponding position of the spray pipe main body (100); the reinforcing box assembly (200) is formed by sequentially arranging N reinforcing boxes (210) to form an annular structure, N is more than or equal to 8, the side walls of two adjacent reinforcing boxes (210) are mutually attached, the reinforcing boxes are temporarily fixed by gluing, and the reinforcing box assembly (200) is removed after the processing is completed;
step2, installing a spray pipe main body (100) on the bottom plate (020), wherein the small end of the spray pipe main body (100) faces the bottom plate (020) and is attached to the bottom plate (020);
Step 3, installing and repairing the flange assembly (300): sequentially assembling one layer of flange or a plurality of layers of flanges to the outer side of the small end of the spray pipe main body (100), attaching the inner molded surface of the flange or the plurality of layers of flanges to the outer molded surface of the spray pipe main body (100), and repairing the outer molded surface of the flange assembly (300);
Step 4, installing and repairing the reinforcing box component (200): dividing the reinforcing boxes (210) into four groups along the circumference, firstly installing two groups which are oppositely arranged and repairing the two groups, then installing the other two groups of reinforcing boxes (210) and repairing the two groups of reinforcing boxes, attaching the inner molded surface of the reinforcing boxes (210) to the outer molded surface of the spray pipe main body (100), and temporarily fixing the reinforcing boxes by adopting gluing after the installation is completed;
And 5, drilling holes on the spray pipe main body (100), the flange component (300) and the reinforcing box component (200) by using a drill plate (400), obtaining pin connection holes corresponding to each other, riveting and fixing by using pins, then placing the pin connection holes into chemical vapor deposition equipment for deposition, polishing to remove pin heads after the deposition is completed, and completing the integral assembly of the spray pipe component.
2. The method of assembling a ceramic matrix composite nozzle block according to claim 1, wherein:
In the step 3, the fit clearance between the inner molded surface of the flange and the outer molded surface of the spray pipe main body (100) is less than or equal to 0.05mm.
3. The ceramic matrix composite nozzle block assembly method of claim 1 or 2, wherein:
In the step 1, the flange assembly (300) comprises a plurality of layers of flanges, and the plurality of layers of flanges are sequentially installed from bottom to top; the lower end face of the first layer flange is attached to the bottom plate (020), the attaching gap is less than or equal to 0.05mm, and the attaching gap of the adjacent arc-shaped structures is less than or equal to 0.05mm.
4. The ceramic matrix composite nozzle block assembly method of claim 1 or 2, wherein:
In the step 1, the reinforcement box (210) comprises an arc-shaped flat plate arranged at the bottom, two side plates oppositely arranged at two ends of the arc-shaped flat plate and an arc-shaped backboard arranged between the two side plates, wherein the inner side surface of the arc-shaped backboard is used for being attached to the outer surface of the spray pipe main body (100); the N reinforcing boxes (210) are sequentially arranged, the side plates of adjacent reinforcing boxes (210) are mutually attached, and the attaching gap is less than or equal to 0.05mm; the fit clearance between the inner molded surface of the reinforcement box (210) and the outer molded surface of the spray pipe main body (100) is less than or equal to 0.05mm.
5. A ceramic matrix composite nozzle component assembly fixture for implementing the ceramic matrix composite nozzle component assembly method according to any one of claims 1-4, characterized in that:
The device comprises a bottom plate (020), a spray pipe outer pressure ring (010), at least three spray pipe positioning blocks (090), one or more second limiting blocks, a plurality of first limiting blocks, a plurality of reinforcing box pressure plates (080), a plurality of second positioning blocks (060) and a plurality of first positioning blocks (040);
The bottom plate (020) is a mounting base of the spray pipe component and provides support for the assembly process; a positioning ring groove (021) is arranged in the middle of the bottom plate (020);
The spray pipe outer pressure ring (010) is coaxially arranged above the positioning ring groove (021) and is detachably connected with the bottom plate (020) through a connecting piece; the inner side wall of the spray pipe outer pressure ring (010) is matched with the outer molded surface in the middle of the spray pipe main body (100) and is used for compressing and fixing the spray pipe main body (100);
The spray pipe positioning blocks (090) are positioning tools of the spray pipe main body (100), at least three spray pipe positioning blocks (090) are circumferentially and uniformly distributed on the periphery of the positioning ring groove (021), and the outer side surfaces of the spray pipe positioning blocks (090) are matched with the inner molded surfaces corresponding to the small ends of the spray pipe main body (100) so as to ensure the relative positions of the spray pipe main body (100) on the bottom plate (020);
the second limiting block is arranged on the outer side of the positioning ring groove (021) and used as a circumferential mounting reference of the 1 st arc-shaped structure of each layer of flange, and the second limiting block is detachably connected with the bottom plate (020);
the first limiting blocks are detachably connected with the bottom plate (020) and are positioned on the outer side of the positioning ring groove (021) and used as a reference for installing the reinforcing box (210);
the reinforcing box pressing plate (080) is a plurality of arc plates and is used for being arranged on the periphery of the positioning ring groove (021) to press the assembled reinforcing box (210);
The second positioning block (060) and the first positioning block (040) are of cylindrical or barrel-shaped structures and are coaxially arranged with the positioning ring groove (021), and the outer side surfaces of the second positioning block and the first positioning block are used for positioning the inner surfaces of the flange assembly (300) and the reinforcing box assembly (200) respectively.
6. The ceramic matrix composite nozzle assembly fixture as recited in claim 5, wherein:
the drilling jig further comprises a drilling jig plate (400), wherein the drilling jig plate (400) is used for forming corresponding pin connection holes on the spray pipe main body (100), the flange component (300) and the reinforcing box component (200);
The flange assembly further comprises an annular boss (022) which is coaxially arranged on the bottom plate (020) and is positioned at the periphery of the annular boss (021), wherein the inner diameter of the annular boss (022) is larger than the minimum inner diameter of the flange assembly (300), the outer diameter of the annular boss is larger than the maximum outer diameter of the flange assembly (300), a limit groove is radially arranged on the annular boss (022) corresponding to the connecting position of the adjacent arc-shaped structures in each layer of flange, and the second limit block is arranged in the limit groove; the spray pipe positioning block (090) is positioned between the positioning ring groove (021) and the annular boss (022).
7. The ceramic matrix composite nozzle assembly fixture as recited in claim 6, wherein:
The connecting piece is an lengthened screw rod (030);
The inner diameter of the annular boss (022) is 0-1mm larger than the minimum inner diameter of the flange assembly (300), and the outer diameter of the annular boss is 5-10mm larger than the maximum outer diameter of the flange assembly (300);
the second limiting block is a flat plate which is longitudinally arranged, the lower end of the flat plate is inserted into the limiting groove, and the side surface of the flat plate is used as a circumferential mounting reference of the 1 st arc-shaped structure of the corresponding flange;
Bosses matched with the positioning ring grooves (021) are arranged at the bottoms of the second positioning blocks (060) and the first positioning blocks (040) and are used for positioning the positioning ring grooves.
8. The ceramic matrix composite nozzle assembly fixture of claim 6 or 7, wherein:
The flange assembly (300) comprises a first flange, a second flange and a third flange which are sequentially overlapped upwards by a bottom plate (020), wherein each layer of flange comprises three arc structures; the second limiting block comprises a first layer of second limiting block (070), a second layer of second limiting block (071) and a third layer of second limiting block (072) which correspond to the first flange, the second flange and the third flange respectively;
The limiting grooves on the bottom plate (020) are respectively arranged corresponding to the splicing surfaces of the three arc structures in each layer of flange, the splicing surfaces corresponding to the first flange, the second flange and the third flange are respectively carved with digital identifications 1,2 and 3, and avoidance grooves are formed in the inner sides of the plates of the two layers of second limiting blocks (071) and the three layers of second limiting blocks (072).
9. The ceramic matrix composite nozzle assembly fixture of claim 8, wherein:
the first limiting block comprises a connecting plate which is transversely arranged and a longitudinal flat plate which is connected with the connecting plate, the connecting plate is connected with the bottom plate (020) through bolts and pins, and the longitudinal flat plate is used as a circumferential reference surface of the reinforcing box (210) to limit the side plate of the reinforcing box (210);
The inner side of the reinforcement box pressing plate (080) is provided with a plurality of grooves, the reinforcement box pressing plate (080) is used for pressing and fixing an arc-shaped flat plate at the bottom of the reinforcement box (210), and the grooves are used for accommodating the corresponding side plates of the reinforcement box (210) when the reinforcement box (210) is pressed.
10. The ceramic matrix composite nozzle assembly fixture as recited in claim 9, wherein:
The first limiting blocks are divided into at least two groups, each group comprises two first limiting blocks, namely a left first limiting block (50, 52) and a right first limiting block (51, 53) respectively, and the first limiting blocks are used for limiting the reinforcing box (210) in the middle of the first limiting blocks; the longitudinal flat plates of the left first limiting blocks (50, 52) serve as initial circumferential reference surfaces of the reinforcing boxes (210).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311702617.3A CN117900818A (en) | 2023-12-12 | 2023-12-12 | Assembly method and assembly tool for ceramic matrix composite spray pipe component |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311702617.3A CN117900818A (en) | 2023-12-12 | 2023-12-12 | Assembly method and assembly tool for ceramic matrix composite spray pipe component |
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| CN117900818A true CN117900818A (en) | 2024-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202311702617.3A Pending CN117900818A (en) | 2023-12-12 | 2023-12-12 | Assembly method and assembly tool for ceramic matrix composite spray pipe component |
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| Country | Link |
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| CN (1) | CN117900818A (en) |
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2023
- 2023-12-12 CN CN202311702617.3A patent/CN117900818A/en active Pending
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