Turbine shell pin hole testing fixture

Abstract

The utility model relates to a turbine shell pin hole testing fixture which comprises a rack. The first sealing seat is fixedly arranged on the rack, and an air inlet channel is formed in the first sealing seat; one end of the second sealing seat is connected with the first air cylinder; one end of the third sealing seat is connected with the second air cylinder; one end of the fourth sealing seat is connected with the third air cylinder; the positioning pin is arranged on the fourth sealing seat, a pin head of the positioning pin extends out of the fourth sealing face, and the extending pin head is suitable for being matched with a pin hole in the middle shell end. The turbine shell pin hole detection tool can rapidly detect whether the size of the turbine shell pin hole is qualified or not, the detection operation is simple, which part is poor in appearance can be visually seen, and the detection cost is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the field of inspection fixtures, specifically to an inspection fixture for turbine housing pin holes. Background Technology

[0002] like Figure 1 The turbine housing shown includes an intermediate housing end, an inlet end, a bushing hole, and an outlet end. A pin hole needs to be machined at the intermediate housing end. A drill bit is required during the machining of the pin hole. As the drill bit wears or is damaged, the pin hole size of the subsequently machined turbine housing will be unqualified. Here, unqualified pin hole size means that the pin hole size is too small or the pin hole is not machined. The pin hole size is too small mainly due to wear of the outer diameter of the drill bit, and the pin hole is not machined mainly due to the breakage of the drill bit.

[0003] The machined turbine housing needs to be inspected for the pin holes. There are many inspection methods available, such as coordinate measuring machine, 3D scanning inspection, and special inspection tools. However, the equipment costs are high, the inspection time is long, and the inspection tools are limited (they can only be used to inspect dimensions), which increases the cost of the processed products. Summary of the Invention

[0004] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a turbine housing pin hole inspection tool to solve the current technical problems of overly complex and costly turbine housing pin hole inspection.

[0005] The technical solution adopted by this utility model to solve its technical problem is as follows: A turbine housing pin hole inspection tool is provided, including a frame; a first sealing seat, which is fixedly mounted on the frame, with its upper end forming a first sealing surface for engaging with the turbine housing outlet end; an air inlet channel is provided on the first sealing seat, with the air inlet end of the air inlet channel located on the side wall of the first sealing seat and its outlet end located on the first sealing surface; and a second sealing seat, one end of which is connected to a first cylinder, the first cylinder being mounted on the frame, and the other end of which forms a sealing engagement with the bushing hole of the turbine housing. The system includes: a second sealing surface; a third sealing seat, one end of which is connected to a second cylinder, which is mounted on the frame, and the other end of which forms a third sealing surface for sealing the turbine housing inlet; a fourth sealing seat, one end of which is connected to the third cylinder, which is mounted on the frame, and the other end of which forms a fourth sealing surface for sealing the turbine housing intermediate end; and a positioning pin, which is mounted on the fourth sealing seat, with its pin head extending from the fourth sealing surface and adapted to engage with a pin hole on the intermediate end of the turbine housing.

[0006] Furthermore, a first sealing ring is provided on the first sealing surface, the third sealing surface, and the fourth sealing surface; a sealing rubber head is provided on the second sealing surface.

[0007] Further, the fourth sealing seat and the third cylinder are in a split structure; the first cylinder is arranged on the rack through a first support; the second cylinder is arranged on the rack through a second support; a guide rod is arranged on the second support and passes through the third sealing seat to guide the horizontal movement of the third sealing seat.

[0008] Further, a limiting block is arranged on the rack and adapted to cooperate with the turbine shell to limit the position of the turbine shell in the horizontal direction.

[0009] Further, the third cylinder is arranged on the top of the rack, and the fourth sealing seat is in a split structure with the third cylinder.

[0010] Further, the mounting structure between the positioning pin and the fourth sealing seat is that a mounting hole is arranged on the fourth sealing seat, the mounting hole comprises a large-diameter hole and a small-diameter hole, and an internal thread is arranged in the large-diameter hole; the positioning pin is in a T-shaped structure, the upper end of the positioning pin is arranged in the large-diameter hole, and the lower end of the positioning pin extends out of the small-diameter hole; a locking screw is arranged in cooperation with the large-diameter hole, the locking screw is in axial abutment with the positioning pin; and a second sealing ring is arranged between the locking screw and the fourth sealing seat.

[0011] The turbine shell pin hole gauge of the utility model can quickly detect whether the turbine shell pin hole size is qualified, the detection operation is simple, the part with poor appearance can be directly seen, and the detection cost is greatly reduced. BRIEF DESCRIPTION OF DRAWINGS

[0012] The utility model is further described below in combination with the drawings.

[0013] Figure 1 is a schematic view of a turbine shell; Figure 2 is a schematic view of a turbine shell pin hole gauge of the utility model; Figure 3 is a schematic view of a turbine shell pin hole gauge (with a turbine shell) of the utility model; Figure 4 is a schematic view of a first sealing seat, a second sealing seat and a third sealing seat on a bottom plate; Figure 5 is a schematic view of a first sealing seat on a mounting seat; Figure 6 is a schematic view of a fourth sealing seat; Figure 7Is the installation structure diagram between the positioning pin and the fourth sealing seat; wherein, 1, rack, 11, bottom plate, 12, stand, 13, top plate; 2, first sealing seat, 21, mounting seat, 22, air inlet channel; 3, second sealing seat, 31, first cylinder, 32, sealing glue head, 33, first support; 4, third sealing seat, 41, second cylinder, 42, guide rod, 43, second support; 5, fourth sealing seat, 51, third cylinder, 52, positioning pin, 53, locking screw; 61, first sealing ring, 62, second sealing ring; 7, turbine shell, 71, middle shell end, 72, air inlet end, 73, bushing hole, 74, air outlet end; 8, limiting block. DETAILED DESCRIPTION

[0014] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the present application will be described below in connection with the drawings. Obviously, the described embodiments are some but not all of the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of protection of the present application.

[0015] The present application provides a turbine shell pin hole gauge, which is described in detail below. It should be noted that the description order of the following embodiments is not limited as the preferred order of the embodiments of the present application. Moreover, the description of each embodiment in the following embodiments has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0016] To solve the technical problems of too complex and high cost in the prior art for turbine shell pin hole detection, an embodiment of the present application provides a turbine shell pin hole gauge. The following is described in detail.

[0017] As Figures 1 to 7As shown in the figure, a turbine shell pin hole gauge includes a frame 1, the frame 1 includes a bottom plate 11, a top plate 13 and a plurality of columns 12, each column 12 is connected between the top plate 13 and the bottom plate 11; a first sealing seat 2 is fixedly arranged on the frame 1, the upper end of the first sealing seat 2 forms a first sealing surface for cooperating with the gas outlet end 74 of the turbine shell 7, an air inlet channel 22 is formed on the first sealing seat 2, the air inlet end 72 of the air inlet channel 22 is formed on the side wall of the first sealing seat 2, and the air outlet end 74 is formed on the first sealing surface; a second sealing seat 3 is connected to a first cylinder 31 at one end, the first cylinder 31 is arranged on the frame 1, the other end of the second sealing seat 3 forms a second sealing surface for sealingly cooperating with the bushing hole 73 of the turbine shell 7; a third sealing seat 4 is connected to a second cylinder 41 at one end, the second cylinder 41 is arranged on the frame 1, the other end of the third sealing seat 4 forms a third sealing surface for sealingly cooperating with the air inlet end 72 of the turbine shell 7; a fourth sealing seat 5 is connected to a third cylinder 51 at one end, the third cylinder 51 is arranged on the frame 1, the other end of the fourth sealing seat 5 forms a fourth sealing surface for sealingly cooperating with the middle shell end 71 of the turbine shell 7; a positioning pin 52 is arranged on the fourth sealing seat 5, the pin head of the positioning pin 52 extends from the fourth sealing surface, and the extended pin head is adapted to cooperate with the pin hole on the middle shell end 71.

[0018] Specifically, as an optional implementation manner in the embodiment, as shown in Figures 4 to 6 As shown in the figure, the first sealing surface, the third sealing surface and the fourth sealing surface are all provided with a first sealing ring 61; the second sealing surface is provided with a sealing rubber head 32, and the sealing rubber head 32 can better cooperate with the bushing hole 73.

[0019] Specifically, as an optional implementation manner in the embodiment, as shown in Figure 2 、 Figure 3 and Figure 4 As shown in the figure, the fourth sealing seat 5 and the third cylinder 51 are in a split structure; the first cylinder 31 is arranged on the frame 1 through a first support 33; the second cylinder 41 is arranged on the frame 1 through a second support 43; a guide rod 42 is arranged on the second support 43, and the guide rod 42 passes through the third sealing seat 4 to guide the horizontal movement of the third sealing seat 4.

[0020] In the embodiment, the first cylinder 31 and the second cylinder 41 are arranged on the bottom plate 11, and the third cylinder 51 is arranged on the top plate 13.

[0021] In the embodiment, the mounting seat 21 is arranged between the first sealing seat 2 and the bottom plate 11, the upper end surface of the mounting seat 21 is an inclined mounting surface, the first sealing seat 2 is fixed on the inclined mounting surface of the mounting seat 21, the first sealing seat 2 is a cylindrical structure as a whole, and the first sealing surface at the upper end of the first sealing seat 2 is inclined after the first sealing seat 2 is mounted on the inclined mounting surface.

[0022] The first sealing surface is inclined, mainly to ensure that the installation of the other several ports of the turbine shell 7 is in a vertical or horizontal state, specifically, to ensure that the port of the bushing hole 73 is vertical, to ensure that the port of the turbine shell 7 air inlet end 72 is vertical, and to ensure that the port of the turbine shell 7 middle shell end 71 is horizontal.

[0023] Since the fourth sealing seat 5 is separated from the third cylinder 51, the operator needs to directly install it by hand during installation, and then starts the third cylinder 51 to clamp it after the fourth sealing seat 5 is matched with the turbine shell 7 middle shell end 71.

[0024] Specifically, as an optional implementation manner in the embodiment, as shown in Figure 4 The rack 1 is provided with a limiting block, and the limiting block is adapted to the turbine shell 7 to limit the position of the turbine shell 7 in the horizontal direction.

[0025] Specifically, as an optional implementation manner in the embodiment, as shown in Figure 7 The mounting structure between the positioning pin 52 and the fourth sealing seat 5 is that a mounting hole is arranged on the fourth sealing seat 5, the mounting hole includes a large-diameter hole and a small-diameter hole, and an internal thread is arranged in the large-diameter hole; the positioning pin 52 is a T-shaped structure, the upper end of the positioning pin 52 is located in the large-diameter hole, and the lower end of the positioning pin 52 extends from the small-diameter hole; and the lower end of the positioning pin 52 is used to cooperate with the pin hole.

[0026] The locking screw 53 is matched with the large-diameter hole, the locking screw 53 axially abuts against the positioning pin 52, and the second sealing ring 62 is arranged between the locking screw 53 and the fourth sealing seat 5.

[0027] The mounting structure can stably mount the positioning pin 52 on the fourth sealing seat 5, and can also ensure the sealing between the fourth sealing seat 5 and the positioning pin 52.

[0028] The detection method of the turbine shell 7 pin hole gauge for the turbine shell is as follows: the fourth sealing seat 5 is matched with the port of the middle shell end 71 of the turbine shell 7, then the turbine shell is placed on the clamp, three air cylinders clamp the turbine shell 7, at this time, the turbine shell 7 is sealed by four sealing covers, then air is filled into the turbine shell 7 through the air inlet channel 22, whether the turbine shell 7 leaks is observed, if no leakage, it represents that the turbine shell 7 is qualified, if leakage, it represents that the turbine shell 7 is unqualified, the main reason of the leakage is that the pin hole size is qualified (the inner diameter is too small) or the pin hole is not machined, the two conditions will cause that the positioning pin 52 cannot be completely put in, the gap cannot be observed by naked eyes, the leakage can be found only by air inlet, a large amount of leakage occurs when air inlet is detected, and the turbine shell 7 pin hole defect is found.

[0029] It should be noted that the pin hole of the turbine shell 7 does not exist the condition that the hole diameter is too large and causes unqualified condition, because the pin hole is drilled and milled by a drill bit, the size of the drill bit used for drilling the pin hole is selected in advance, so the size of the pin hole machined by the drill bit is correct at the beginning, with long time use of the drill bit, the drill bit is worn to cause that the outer diameter of the drill bit is small, thereby causing that the size of the pin hole is large, or the drill bit is broken to cause that the pin hole has a leakage hole.

[0030] In the present application, each device (parts without specific structure) selected is a general standard part or a part known by those skilled in the art, and its structure and principle can be known by the technical personnel through a technical manual or through a conventional experimental method.

[0031] In the description of the embodiments of the present application, unless otherwise clearly defined and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. 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.

[0032] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0033] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other manners. The described device embodiments are merely schematic, for example, the division of the units is only a logical function division, and there can be another division manner in actual implementation, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the displayed or discussed mutual couplings or direct couplings or communication connections between the units can be indirect couplings or communication connections through some communication interfaces, devices or units, and can be electrical, mechanical or other forms.

[0034] The units described as separated components can or can not be physically separated, and the components displayed as units can or can not be physical units, i.e., can be located in one place, or can be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments.

[0035] In addition, each functional unit in the various embodiments of the present application can be integrated into one processing unit, or each unit can exist physically, or two or more units can be integrated into one unit.

[0036] With the above ideal embodiments according to the present application as the inspiration, through the above description, relevant personnel can make various changes and modifications without deviating from the technical idea of the present application. The technical scope of the present application is not limited to the contents in the specification, and must be determined according to the scope of claims.

Claims

1. A turbine shell pin hole gage, characterized by, The utility model relates to a turbine seal structure, including frame (1), first seal seat (2), first seal seat (2) is fixed on frame (1), and its upper end forms the first sealing surface for cooperating with turbine shell (7) outlet end (74), and the air inlet channel (22) is opened on first seal seat (2), and the air inlet end (72) of air inlet channel (22) is opened in the side wall of first seal seat (2), and the outlet end (74) is opened in the first sealing surface, second seal seat (3), one end of second seal seat (3) is connected first cylinder (31), and first cylinder (31) is arranged on frame (1), and the other end of second seal seat (3) forms the second sealing surface for cooperating with the bushing hole (73) of turbine shell (7) and seals, third seal seat (4), one end of third seal seat (4) is connected second cylinder (41), and second cylinder (41) is arranged on frame (1), and the other end of third seal seat (4) forms the third sealing surface for cooperating with the air inlet end (72) of turbine shell (7) and seals, fourth seal seat (5), one end of fourth seal seat (5) is connected third cylinder (51), and third cylinder (51) is arranged on frame (1), and the other end of fourth seal seat (5) forms the fourth sealing surface for cooperating with the middle shell end (71) of turbine shell (7) and seals, positioning pin (52), positioning pin (52) is arranged in fourth seal seat (5), and the pin head of positioning pin (52) is stretched out from the fourth sealing surface, and the stretched-out pin head is suitable for cooperating with the pin hole on middle shell end (71).

2. The turbine shroud pin bore gauge of claim 1, wherein, First seal ring (61) is arranged on the first sealing surface, third sealing surface and fourth sealing surface, and sealing rubber head (32) is arranged on the second sealing surface.

3. The turbine shell pin bore gage of claim 1 wherein, The fourth seal seat (5) and third cylinder (51) are split structure, first cylinder (31) is arranged on frame (1) through first support (33), second cylinder (41) is arranged on frame (1) through second support (43), guide rod (42) is arranged on second support (43), and guide rod (42) passes through third seal seat (4) to guide third seal seat (4) to move horizontally.

4. The turbine shell pin bore gauge of claim 1, wherein, Limiting block (8) is arranged on frame (1), and limiting block (8) is suitable for cooperating with turbine shell (7) to limit the position of turbine shell (7) in horizontal direction.

5. The turbine shell pin bore gauge of claim 1, wherein, Third cylinder (51) is arranged on the top of frame (1), and fourth seal seat (5) and third cylinder (51) are split structure.

6. The turbine shell pin bore gauge of claim 1, wherein, The mounting structure between the positioning pin (52) and the fourth sealing seat (5) is: a mounting hole is formed on the fourth sealing seat (5), the mounting hole comprises a large-diameter hole and a small-diameter hole, and an internal thread is arranged in the large-diameter hole; the positioning pin (52) is in a T-shaped structure, the upper end of the positioning pin (52) is located in the large-diameter hole, and the lower end of the positioning pin (52) extends out of the small-diameter hole; a locking screw (53) is matched with the large-diameter hole, the locking screw (53) is in abutment with the positioning pin (52) in the axial direction, and a second sealing ring (62) is arranged between the locking screw (53) and the fourth sealing seat (5).

7. The turbine shroud pin bore gauge of claim 1, wherein, The rack (1) comprises a bottom plate (11), a top plate (13) and a plurality of stand columns (12), each stand column (12) being connected between the top plate (13) and the bottom plate (11).

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