Method and tool for aligning turbine pump part reference

Abstract

The application relates to a turbine pump part reference alignment method and tool. The turbine pump part reference alignment tool comprises a base, a pin and a plurality of fixing assemblies. A cutting reference line and a first positioning line are formed by selecting angles on both sides of an initial vertical line, and the position of a starting mounting hole is determined according to the first positioning line and a positioning distance, so that the position of the reference mounting hole is obtained, and when the cutting reference line is cut, the mounting hole has a certain distance, so that the strength of the mounting hole is prevented from being affected after the cutting position is close to the mounting hole after cutting.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of metal material manufacturing, in particular to a turbine pump part reference alignment method and tool. BACKGROUND

[0002] In a liquid rocket engine, in order to meet the high specific impulse requirement of the engine, the turbine efficiency needs to be improved as much as possible. Sometimes, in order to reduce the manufacturing cost of the turbine pump and meet the design requirement, the size of the turbine needs to be limited within a certain range, and then a multi-stage turbine design method is adopted.

[0003] A schematic diagram of a turbine pump part of a certain type of engine is shown in Figure 1 The turbine pump part is a key component of the turbine pump. Figure 2 To Figure 1 a schematic diagram of the structure of the turbine pump part at the cutting line in Figure 3 a schematic diagram of the turbine pump part after cutting in Figure 1 . The stator vane includes 97 centripetal vanes arranged in a circumferential direction, and the multiple centripetal vanes are arranged closely. The traditional mechanical processing is difficult to process the vanes, and therefore a five-axis electrospark hot processing technology is used for forming, which results in a long processing cycle and high cost of the turbine pump part.

[0004] Therefore, the turbine pump part needs to be divided into three parts along the division position line according to the use and assembly requirements, and the blade shape cannot be damaged in the division position line area. Therefore, it is necessary to find the cutting reference line of the turbine pump part, and the turbine pump part is accurately cut into three parts around the axial direction based on the cutting reference line.

[0005] The turbine pump part needs to be fixed on a structure to be fixed during use. Generally, a plurality of mounting holes are formed on the flange ring of the turbine pump part in a circumferential direction, and the turbine pump part is fixed to the structure to be fixed through the mounting holes. However, during cutting, the cutting path is consistent with the blade shape, and the two side surfaces of the blade are curved surfaces. Therefore, when cutting along the curved surface, the distance between the cutting path and the mounting hole is too close or interferes, which affects the structure and strength of the mounting hole. SUMMARY

[0006] Therefore, it is necessary to determine the cutting reference line of the turbine pump part with multiple curved stator vanes, and to accurately cut the turbine pump part into three parts around the axial direction based on the cutting reference line without affecting the structure and strength of the blade shape and the mounting hole. A turbine pump part reference alignment method and tool are provided.

[0007] An embodiment of the present application provides a turbine pump part reference alignment method, which clamps a turbine pump part by using a turbine pump part reference alignment tool and accurately cuts the turbine pump part. The turbine pump part is annular, and a plurality of mounting holes are uniformly arranged on a flange ring around the circumference of the turbine pump part. The turbine pump part reference alignment method comprises the following steps.

[0008] The turbine pump part is installed to the turbine pump part reference alignment tool.

[0009] The turbine pump part is placed along the horizontal direction in the axial direction, and a half radius of the turbine pump part along the vertical direction is used as an initial line.

[0010] A first angle is taken in the clockwise direction, and another half radius with the first angle from the initial line is used as a cutting reference line.

[0011] A second angle is taken in the counterclockwise direction, and another half radius with the second angle from the initial line is used as a first positioning line.

[0012] According to the actual size of the turbine pump part, a distance from the center axis of the mounting hole to the center axis of the turbine pump part is determined, which is recorded as a positioning distance.

[0013] According to the first positioning line and the positioning distance, a center axis of a starting mounting hole is determined, wherein the center axis of the starting mounting hole passes through the first positioning line.

[0014] In the turbine pump part reference alignment method, the cutting reference line and the first positioning line are formed by selecting angles on both sides of the vertical initial line, and the position of the starting mounting hole is determined according to the first positioning line and the positioning distance. Therefore, the position of the reference mounting hole is obtained, and when cutting along the cutting reference line, the mounting hole has a certain distance, which prevents the cutting position from being close to the mounting hole after cutting, thereby affecting the strength of the mounting hole. When cutting along the cutting reference line in the bladeless area, the cutting is flat. When cutting in the blade area, the outer ring, the inner ring and the flange ring between two blades are cut according to the shape of the blade, so that the blade structure is not damaged. Therefore, according to the turbine pump part reference alignment method, the turbine pump part is clamped by using the turbine pump part reference alignment tool, the cutting reference line is aligned, the starting mounting hole is positioned, and the structure of the mounting hole on the blade and the flange ring is not damaged in the accurate cutting process.

[0015] In an embodiment, the turbine pump part reference alignment method further comprises:

[0016] After the step of determining the center axis of the starting mounting hole according to the first positioning line and the positioning distance, the positions of all the mounting holes are determined according to the number of the mounting holes and the center axis of the starting mounting hole.

[0017] In an embodiment, the turbine pump part reference locating method further comprises:

[0018] After the step of determining the positions of all the mounting holes according to the number of the mounting holes and the center axis of the starting mounting hole, the starting mounting hole is machined with a tolerance band H7, and the remaining mounting holes are machined.

[0019] In an embodiment, the turbine pump part reference locating tool comprises a base and a pin, the pin is connected to the base near a side of the turbine pump part and protrudes from the base to abut against the blade, and the turbine pump part reference locating method further comprises:

[0020] A third angle is taken in the clockwise direction, and another radius with a half of the third angle from the initial line is taken as a second positioning line;

[0021] The connecting line of the multiple blade length direction mid radii forms a mid radius circle, so that the center axis of the pin passes through the intersection point of the mid radius circle and the second positioning line;

[0022] The surface of the blade side along the length direction mid line of the blade is recorded as a center curve;

[0023] The outer periphery of the pin is tangent to the center curve to determine the radius of the pin.

[0024] In an embodiment, the turbine pump part reference locating method further comprises:

[0025] The pin abuts against one of the blades, and the turbine pump part is cut along the cutting reference line.

[0026] In an embodiment, the turbine pump part reference locating method further comprises:

[0027] The remaining cutting lines are determined according to the cutting reference line;

[0028] The pin abuts against one of the blades, and the turbine pump part is cut along the remaining cutting lines to cut the turbine pump part into at least three pieces.

[0029] The embodiment of the present application also provides a turbine pump part reference alignment tool for positioning a turbine pump part and performing reference alignment on the positioned turbine pump part according to the turbine pump part reference alignment method. The turbine pump part comprises an inner ring, an outer ring, a plurality of blades and a flange ring. The inner ring, the outer ring and the flange ring are sequentially sleeved from inside to outside. One end of each blade is connected to the inner ring, and the other end of each blade is connected to the outer ring. The plurality of blades are uniformly arranged around the axial direction of the inner ring. The inner periphery of the flange ring is connected to the outer periphery of the outer ring. The turbine pump part reference alignment tool comprises:

[0030] a base, wherein the base is provided with a ring groove for accommodating one end of the outer ring along the axial direction of the outer ring so that the flange ring is in abutment with the base;

[0031] a pin connected to one side of the base close to the blades for being in abutment with one of the blades;

[0032] a plurality of fixing assemblies connected to the base, wherein the fixing assemblies are used for fixing the inner ring.

[0033] In an embodiment, the fixing assembly comprises:

[0034] a pad located in the inner ring and in abutment with the base;

[0035] a pressing plate provided with a fixing hole, wherein the pad and the inner ring are located between the pressing plate and the base;

[0036] a fastener penetrating through the fixing hole and connected to the base so that the pressing plate presses the inner ring and the pad.

[0037] In an embodiment, the fixing assembly further comprises a plurality of spacers:

[0038] the base is provided with a plurality of fastening holes, the plurality of fixing holes and the plurality of fixing assemblies are in one-to-one correspondence, and the fastener penetrates through the spacer, the fixing hole and the fastening hole in sequence.

[0039] In an embodiment, the fixing hole is a strip-shaped hole.

[0040] In actual use, the turbine pump part reference alignment tool is used as follows. First, one end of the outer ring of the turbine pump part along the axial direction of the outer ring is placed in the accommodating groove, the flange ring is in abutment with the base, the pin is located between two blades, and the plurality of fixing assemblies are connected to the base to fix the inner ring, so that the turbine pump part is fixed on the base, and the turbine pump part is relatively fixed, thereby facilitating accurate cutting reference alignment and positioning of the mounting hole. BRIEF DESCRIPTION OF DRAWINGS

[0041] Figure 1 Structure diagram of a turbine pump part.

[0042] Figure 2 Structure diagram of a turbine pump part at a cutting line in Figure 1

[0043] Figure 3 Diagram of a turbine pump part after cutting in Figure 1

[0044] Figure 4 Diagram of a turbine pump part reference alignment method.

[0045] Figure 5 Diagram of a turbine pump part in Figure 1

[0046] Figure 6 Enlarged view of A in Figure 5

[0047] Figure 7 Diagram of a turbine pump part and turbine pump part reference alignment tool assembly in Figure 1

[0048] Figure 8 Sectional view of a turbine pump part and turbine pump part reference alignment tool assembly in Figure 1

[0049] Figure 9 Diagram of a turbine pump part in Figure 1

[0050] Figure 10 Enlarged view of B in Figure 9

[0051] BRIEF DESCRIPTION OF THE DRAWINGS

[0052] 100 - turbine pump part reference alignment tool

[0053] 110 - base; 111 - ring groove; 112 - fastening hole; 113 - positioning hole

[0054] 120 - pin

[0055] 130 - fixing assembly; 131 - cushion block; 132 - pressing plate; 133 - fixing hole; 134 - fastener; 135 - gasket

[0056] 200 - turbine pump part; 201 - inner ring; 202 - outer ring; 203 - blade; 204 - flange ring; 205 - mounting hole​​​​​​​​

[0057] 210 - first angle; 211 - second angle; 212 - third angle;

[0058] 220 - initial line; 221 - first positioning line; 222 - second positioning line;

[0059] 230 - cutting line; 231 - cutting reference line; 232 - central curve;

[0060] 240 - mean diameter circle. DETAILED DESCRIPTION

[0061] In order to make the above objectives, features and advantages of the present application more clear and easily understood, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present application. However, the present application can be practiced in a number of different ways from those described herein without departing from the scope of the present application, and those skilled in the art can make similar improvements and modifications without departing from the spirit of the present application, and therefore the present application is not limited to the specific embodiments disclosed below.

[0062] In the description of the present application, it should be understood that if the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0063] In addition, if the terms "first", "second" appear, these terms are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features referred to. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, if the term "plurality" appears, the meaning of "plurality" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0064] In the present application, unless specifically defined otherwise, if there is an appearance of the terms "installation", "connection", "connection", "fixation" and the like, these terms should be broadly understood. For example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically defined. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0065] In the present application, unless specifically defined otherwise, if there is a description of the first feature "on" or "below" the second feature and the like, it can mean that the first and second features are in direct contact, or the first and second features are indirectly in contact through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the second feature, or only indicates that the first feature is higher than the second feature in horizontal height. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the second feature, or only indicates that the first feature is less than the second feature in horizontal height.

[0066] It should be noted that if an element is referred to as "fixed to" or "disposed on" another element, it can be directly on another element or there can be a middle element. If an element is considered to be "connected" to another element, it can be directly connected to another element or there can be a middle element. If present, the terms "vertical", "horizontal", "up", "down", "left", "right" and similar expressions used in the present application are for illustrative purposes only and do not represent the only implementation.

[0067] In combination Figures 1 to 3 An embodiment of the present application provides a turbine pump part 200, which is annular, comprising an inner ring 201, an outer ring 202, a plurality of blades 203, and a flange ring 204. The inner ring 201, the outer ring 202 and the flange ring 204 are sequentially sleeved from inside to outside, one end of the blade 203 is connected with the inner ring 201, the other end is connected with the outer ring 202, the plurality of blades 203 are uniformly arranged around the axial direction of the inner ring 201, and the inner periphery of the flange ring 204 is connected with the outer periphery of the outer ring 202.

[0068] The turbine pump part 200 needs to be fixed on a structure to be fixed (for example, a turbine pump part reference alignment tool 100 or other parts of a turbine pump) in use. Generally, a plurality of mounting holes are formed on the flange ring of the turbine pump part in the circumferential direction, and the turbine pump part 200 is fixed to the structure to be fixed through the mounting holes. However, when the turbine pump part 200 is cut, the cutting path is consistent with the blade type, and the two side surfaces of the blade are curved surfaces. Therefore, cutting along the curved surface is easy to be too close to the mounting hole or interfere, affecting the structure and strength of the mounting hole. Therefore, please refer to Figure 4 and in combination with Figures 5-6 The embodiment of the present application provides a turbine pump part reference alignment method, which comprises the following steps:

[0069] S100: Install the turbine pump part 200 to the turbine pump part reference alignment tool 100. Thus, the turbine pump part reference alignment tool 100 can be used to clamp and fix the turbine pump part 200, so as to facilitate accurate positioning of the turbine pump part 200.

[0070] S200: Place the turbine pump part 200 in the horizontal direction along the axial direction, and take a half radius of the turbine pump part 200 in the vertical direction as an initial line 220.

[0071] S300: Take a first angle 210 in the clockwise direction, and take another radius between the initial line 220 and the first angle 210 as a cutting reference line 231. Since the turbine pump part 200 needs to be cut into multiple parts, such as 3 parts, the other cutting lines 230 can be positioned according to the cutting reference line.

[0072] S400: Take a second angle 211 in the counterclockwise direction, and take another radius between the initial line 220 and the second angle 211 as a first positioning line 221.

[0073] S500: Determine the distance from the center axis of the mounting hole 205 to the center of the turbine pump part 200 according to the actual size of the turbine pump part 200, and record it as a positioning distance.

[0074] In actual use, the turbine pump part 200 needs to meet the requirements of ensuring the strength of the part after processing. Moreover, the positioning distance is different for different sizes of the turbine pump part 200. Therefore, in this step, the distance from the center axis of the mounting hole 205 to the center of the turbine pump part 200 is determined according to the actual size of the turbine pump part 200.

[0075] S600: determining the axis of the starting mounting hole 205 according to the first positioning line 221 and the positioning distance, wherein the center axis of the starting mounting hole 205 passes through the first positioning line 221. Wherein, the position of the center axis of the starting mounting hole 205 can be determined by taking the positioning distance along the first positioning line 221 of the turbine pump part 200.

[0076] Since the turbine pump part 200 is provided with a plurality of mounting holes 205, the first mounting hole 205 is defined as the starting mounting hole. In this step, the position of the starting mounting hole 205 is first determined. Since the plurality of mounting holes 205 are uniformly arranged around the circumference of the turbine pump part 200, after the starting mounting hole 205 is determined, the positions of the remaining mounting holes 205 can be determined, so that the mounting holes 205 can be machined, and the turbine pump part 200 can be installed to the position to be fixed through the mounting holes 205.

[0077] In the turbine pump part reference alignment method described above, the cutting reference line 231 and the first positioning line 221 are formed by selecting angles on both sides of the vertical initial line, and the position of the starting mounting hole 205 is determined according to the first positioning line 221 and the positioning distance, so that the position of the reference mounting hole 205 is obtained, and a certain distance from the mounting hole 205 is ensured when cutting along the cutting reference line 231, preventing the cutting position from being close to the mounting hole 205 after cutting, which affects the strength of the mounting hole 205. Wherein, when cutting along the cutting reference line 231 in the area without blades 203, it is a straight cutting, and when cutting in the area with blades 203, the outer ring 202, the inner ring 201 and the flange ring 204 need to be cut between the two blades 203 according to the shape of the blades 203, so that the structure of the blades 203 will not be damaged. Therefore, according to the turbine pump part reference alignment method, the turbine pump part reference alignment tool 100 is used to clamp the turbine pump part 200, and the turbine pump part 200 is aligned with the cutting reference line 231, the starting mounting hole 205 is positioned, and the structure of the blades 203 and the flange ring 204 at the mounting hole 205 will not be damaged during the precise cutting process.

[0078] Specifically, the first angle 210 is 2°, and the second angle 211 is 2°

[0079] In an embodiment, the turbine pump part reference alignment method further comprises: after the step S600, determining the positions of all the mounting holes 205 according to the number of the mounting holes 205 and the center axis of the starting mounting hole 205, and then machining the starting mounting hole 205 with a tolerance band H7 and machining the rest of the mounting holes 205. Thus, the error of the inner diameter of the reference mounting hole 205 can be ensured, and all the mounting holes 205 are positioned before machining the mounting holes 205, so as to prevent the turbine pump part 200 from slipping during the machining process and ensure the cutting accuracy.

[0080] Referring to Figures 9-10 In an embodiment, the turbine pump part reference alignment tool 100 comprises a base 110 and a pin 120, the pin 120 is connected to the side of the base 110 close to the turbine pump part 200 and protrudes from the base 110 to abut against the blade 203, and the turbine pump part reference alignment method further comprises:

[0081] A third angle 212 is taken in the clockwise direction, and another radius with the third angle 212 between the initial line 220 is taken as a second positioning line 222. The connecting line of the midlines of the lengths of the plurality of blades 203 forms a midline circle 240, so that the center axis of the pin 120 passes through the intersection of the midline circle 240 and the second positioning line 222. The surface on one side of the blade 203 along the midline of the length of the blade 203 is recorded as a center curve 232. It can be understood that the midline is a line on the surface along the middle of the length of the blade 203, and since the surface of the blade 203 is an irregular curved surface, the midline is a curve matched with the surface of the blade 203, so the midline divides the blade 203 into two halves along the length thereof. The extension direction of the midline matches the curve of the blade 203. The outer periphery of the pin 120 is tangent to the center curve to determine the radius of the pin 120. Thus, the outer diameter of the position of the pin 120 is determined in the above manner, so as to facilitate machining of the hole on the base 110 for mounting the pin 120.

[0082] In an embodiment, the turbine pump part reference alignment method further comprises: the pin 120 abuts against one of the blades 203, and the turbine pump part 200 is cut along the cutting reference line 231. The rest of the cutting lines 230 are determined according to the cutting reference line 231. Since the turbine pump part 200 needs to be cut into multiple petals, the positions of the rest of the cutting lines 230 can be determined according to the number of petals to be cut and the position of the cutting reference line 231. The pin 120 is kept abutting against one of the blades 203, and the turbine pump part 200 is cut along the rest of the cutting lines 230 to cut the turbine pump part 200 into at least three petals.

[0083] Specifically, the steps of cutting the turbine pump part 200 along the cutting reference line 231 and determining the remaining cutting lines 230 according to the cutting reference line 231 are not sequential.

[0084] The above steps ensure that, after determining the hole for installing the pin 120, the axis of the hole is perpendicular to the side of the base 110 near the turbine pump part 200. Therefore, it can be ensured that the pin 120 is perpendicular to the side of the base 110 near the turbine pump part 200. When the pin 120 abuts against the blade 203, since the outer periphery of the pin 120 is tangent to the center curve, during the positioning process before the machining process, when the turbine pump part 200 is installed on the base 110 and the side of the base 110 near the turbine pump part 200 is perpendicular to the horizontal plane, the pin 120 can ensure that the turbine pump part 200 is placed axially in the horizontal direction, and the cutting surface of the turbine pump part 200 passes through the axis of the turbine pump part 200.

[0085] Specifically, you can first use the second positioning line 222, and then select the initial line 220 in reverse order based on the second positioning line 222.

[0086] See Figures 7-8 An embodiment of this application also provides a reference alignment fixture 100 for a turbopump component, used to position a turbopump component 200 and perform reference alignment on the positioned turbopump component 200 according to a turbopump component reference alignment method. The turbopump component 200 includes: an inner ring 201, an outer ring 202, multiple blades 203, and a flange ring 204. The inner ring 201, outer ring 202, and flange ring 204 are sequentially fitted from the inside out. One end of each blade 203 is connected to the inner ring 201, and the other end is connected to the outer ring 202. The multiple blades 203 are evenly arranged around the axial direction of the inner ring 201. The inner circumference of the flange ring 204 is connected to the outer circumference of the outer ring 202. The turbopump component reference alignment fixture 100 includes: a base 110, a pin 120, and multiple fixing components 130.

[0087] The base 110 has an annular groove 111, which is used to accommodate one end of the outer ring 202 along its axial direction so that the flange ring 204 abuts against the base 110.

[0088] The pin 120 is connected to the side of the base 110 near the blade 203 for abutting against one of the blades 203.

[0089] The fixing component 130 is connected to the base 110, and the fixing component 130 is used to fix the inner ring 201.

[0090] In actual use, first, the outer ring 202 of the turbine pump part 200 is placed in the accommodating groove along the axial end thereof, the flange ring 204 abuts against the base 110, the pin 120 is located between the two blades 203, the inner ring 201 is fixed by the plurality of fixing assemblies 130 and the base 110, so that the turbine pump part 200 is fixed on the base 110, and the turbine pump part 200 is relatively fixed, facilitating accurate cutting reference alignment and positioning of the mounting hole 205.

[0091] Specifically, the base 110 is provided with a positioning hole 113 according to the position and inner diameter of the pin 120, and the pin 120 is partially located in the positioning hole 113 and can abut against the blade 203.

[0092] Preferably, the plurality of fixing assemblies 130 are uniformly arranged around the circumference of the turbine pump part 200, so that the clamping force of the plurality of fixing assemblies 130 on the turbine pump part 200 is more uniform.

[0093] Referring to Figures 7-8 In an embodiment, the fixing assembly 130 includes a cushion block 131, a pressing plate 132, and a fastener 134. The cushion block 131 is located in the inner ring 201 and abuts against the base 110. The pressing plate 132 is provided with a fixing hole 133, and the cushion block 131 and the inner ring 201 are located between the pressing plate 132 and the base 110. The fastener 134 is threaded through the fixing hole 133 and connected with the base 110, so that the pressing plate 132 presses the inner ring 201 and the cushion block 131 tightly. Then, the fastener 134 is threaded through the fastening hole 112 and cooperates, so that the pressing plate 132 and the inner ring 201 and the cushion block 131 are pressed tightly, the inner ring 201 is clamped between the pressing plate 132 and the base 110, and the turbine pump part 200 is fixed.

[0094] Preferably, the thickness of the cushion block 131 is consistent with the thickness of the inner ring 201, so that when the inner ring 201 abuts against the base 110, the cushion block 131 also abuts against the base 110, and the contact surface of the pressing plate 132 and the inner ring 201 and the contact surface of the pressing plate 132 and the cushion block 131 are in the same plane parallel to the side surface of the base 110.

[0095] In other embodiments, the thickness of the cushion block 131 is not limited, as long as the contact surface of the pressing plate 132 and the inner ring 201 and the contact surface of the pressing plate 132 and the cushion block 131 are in the same plane parallel to the side surface of the base 110.

[0096] Specifically, the fastener 134 is a screw, which is screwed with the fastening hole 112, so that when the turbine pump part 200 needs to be rotated, the screw is rotated to release the inner ring 201 from the pressing plate 132, and the turbine pump part 200 is released, and after the rotation is completed, the screw is tightened again to clamp the inner ring 201 between the pressing plate 132 and the base 110, and the turbine pump part 200 is fixed.

[0097] Referring to Figures 7-8 In an embodiment, the fixing assembly 130 further comprises a plurality of gaskets 135. The base 110 is provided with a plurality of fastening holes 112, and the plurality of fixing holes 133 correspond one-to-one to the plurality of fixing assemblies 130. The fastener 134 is sequentially arranged in the gasket 135, the fixing hole 133 and the fastening hole 112, so that the pressing plate 132 can press the inner ring 201 and the gasket 131 by cooperating the fastener 134 with the fastening hole 112, and the gasket 135 can prevent the gasket from being worn and loosened.

[0098] Referring to Figures 7-8 In an embodiment, the fixing hole 133 is a strip-shaped hole, so that the fastener 134 can move along the extension direction of the strip-shaped hole, thereby moving the position of the gasket 131, so that the fixing assembly 130 can be applied to turbine pump parts 200 of various sizes, and the applicability of the turbine pump part reference alignment tool 100 is improved.

[0099] In other embodiments, the base is further provided with a plurality of flange holes, and the plurality of flange holes correspond one-to-one to the plurality of mounting holes. The fastener such as a screw is arranged in the mounting hole and the flange hole to fix the cut turbine pump part 200 to the base.

[0100] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description simple, all possible combinations of the technical features in the above-mentioned embodiments are not described, but as long as the combinations of the technical features do not exist contradictory, they should be considered as the scope of the description.

[0101] The above-mentioned embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as a limitation on the scope of the patent application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the patent of the present application should be subject to the appended claims.

Claims

1. A method of referencing a turbine pump part, characterized in that, The method comprises the following steps: installing the turbine pump part to the turbine pump part reference alignment tool; placing the turbine pump part in the axial direction along the horizontal direction, taking the half radius of the turbine pump part in the vertical direction as the initial line; taking the first angle in the clockwise direction, and taking another radius with the first angle from the initial line as the cutting reference line; taking the second angle in the counterclockwise direction, and taking another radius with the second angle from the initial line as the first positioning line; determining the distance from the center axis of the mounting hole to the center axis of the turbine pump part according to the actual size of the turbine pump part, and recording it as the positioning distance; determining the center axis of the starting mounting hole according to the first positioning line and the positioning distance, wherein the center axis of the starting mounting hole passes through the first positioning line.

2. The method of part reference alignment for a turbopump as recited in claim 1, wherein, The turbine pump part reference alignment method further comprises: after the step of determining the center axis of the starting mounting hole according to the first positioning line and the positioning distance, determining the positions of all the mounting holes according to the number of the mounting holes and the center axis of the starting mounting hole.

3. The method of part reference alignment for a turbopump as recited in claim 2, wherein, The turbine pump part reference alignment method further comprises: after the step of determining the positions of all the mounting holes according to the number of the mounting holes and the center axis of the starting mounting hole, machining the starting mounting hole with the tolerance band H7, and machining the remaining mounting holes.

4. The turbine pump part reference alignment method according to claim 1, wherein the turbine pump part reference alignment tool comprises a base and a pin, the pin is connected to the side of the base close to the turbine pump part and protrudes from the base to abut against the blade; The turbine pump part reference alignment method further comprises: taking the third angle in the clockwise direction, and taking another radius with the third angle from the initial line as the second positioning line; the connecting line of the multiple blade length direction mid radii forms a mid radius circle, so that the center axis of the pin passes through the intersection of the mid radius circle and the second positioning line; the surface of the blade side along the length direction midline of the blade is recorded as the center curve; the outer periphery of the pin is tangent to the center curve to determine the radius of the pin.

5. The method of part reference alignment for a turbopump as recited in claim 4, wherein, The turbine pump part reference alignment method further comprises: the pin abuts against one of the blades, and the turbine pump part is cut along the cutting reference line.

6. The method of part reference alignment for a turbopump as recited in claim 5, wherein, The turbine pump part reference alignment method further comprises: determining the remaining cutting lines according to the cutting reference line; maintaining the pin abutting against one of the blades, and cutting the turbine pump part along the remaining cutting lines to cut the turbine pump part into at least three pieces.

7. A turbine pump part reference alignment tooling for positioning a turbine pump part and reference aligning the positioned turbine pump part according to the turbine pump part reference alignment method of any one of claims 1-6, characterized in that, The turbine pump part comprises an inner ring, an outer ring, multiple blades, and a flange ring; the inner ring, the outer ring, and the flange ring are sequentially sleeved from inside to outside, one end of the blade is connected with the inner ring, and the other end is connected with the outer ring, the multiple blades are uniformly arranged around the axial direction of the inner ring, and the inner periphery of the flange ring is connected with the outer periphery of the outer ring; The turbine pump part reference alignment tool comprises: A base, the base is provided with a ring groove, the ring groove is used for accommodating one end of the outer ring along the axial direction, so that the flange ring is in abutment with the base; A pin, the pin is connected with the base near one side of the blade, and is used for being in abutment with one of the blades; A plurality of fixing assemblies, the fixing assemblies are connected with the base, and the fixing assemblies are used for fixing the inner ring.

8. The turbine pump part reference alignment tool of claim 7, wherein, The fixing assembly comprises: A pad, the pad is located in the inner ring and is in abutment with the base; A pressing plate, the pressing plate is provided with a fixing hole, the pad and the inner ring are located between the pressing plate and the base; A fastener, the fastener is arranged in the fixing hole and is connected with the base, so that the pressing plate presses the inner ring and the pad.

9. The turbine pump part reference alignment tool of claim 8, wherein, The fixing assembly further comprises a plurality of gaskets: The base is provided with a plurality of fastening holes, a plurality of fixing holes and a plurality of fixing assemblies are one-to-one corresponding, and the fastener is sequentially arranged in the gasket, the fixing hole and the fastening hole.

10. The turbine pump part reference alignment tool of claim 8, wherein, The fixing hole is a strip-shaped hole.

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