CN108775990B - Oil way sealing detection device and detection method for casing assembly - Google Patents
Oil way sealing detection device and detection method for casing assembly Download PDFInfo
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- CN108775990B CN108775990B CN201810922513.6A CN201810922513A CN108775990B CN 108775990 B CN108775990 B CN 108775990B CN 201810922513 A CN201810922513 A CN 201810922513A CN 108775990 B CN108775990 B CN 108775990B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/085—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for pipe joints or seals
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/06—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool
- G01M3/08—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds
- G01M3/088—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point by observing bubbles in a liquid pool for pipes, cables or tubes; for pipe joints or seals; for valves; for welds for welds
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
- G01N3/12—Pressure testing
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0048—Hydraulic means
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Abstract
The invention discloses a device and a method for detecting the oil circuit sealing of a case assembly, wherein the detection device comprises: a base for carrying the case assembly; the sealing pipe joint is used for being assembled at the port in a sealing way, and a through hole for communicating an oil way with an external air source is formed in the sealing pipe joint; the cover plate is fixedly connected with the base through a connecting rod and is pressed on the sealing pipe joint in a pressing mode, and a channel is formed in the cover plate corresponding to the through hole; the plugging piece is used for inserting the oil pipe interface to plug the oil pipe interface; the positioning piece is arranged on the base according to the angular position of the oil pipe connector and comprises a supporting block which is used for supporting and abutting against the oil pipe connector from the direction opposite to the insertion direction of the plugging piece. The invention has simple structure and convenient operation, solves the problems of pipeline connection and gas sealing, also solves the problem of accurate detection of the quality of welding seams, and is safe and reliable; can judge whether gas leakage or gas leakage position, can detect the real bearing strength of welding seam, avoid the receiver subassembly seepage to appear in the operation process, economical and practical.
Description
Technical Field
The invention relates to the field of aero-engine eddy current casings, in particular to a casing assembly oil path sealing detection device and a detection method.
Background
The welding seam associativity of four-way oil pipe after the conventional vortex casing assembly is brazed is detected by a kerosene leakage method, although the detection method is simple and easy to operate, the leakage position cannot be judged by adopting the kerosene leakage method, and the strength which can be really borne by the welding seam cannot be detected by the kerosene, so that the phenomenon of leakage can occur after the vortex casing assembly is installed on an engine and bears high pressure in the operation process.
Therefore, a new device and method for detecting the oil path sealing of the casing assembly are needed to solve the above-mentioned problems.
Disclosure of Invention
The invention provides a cartridge receiver component oil path sealing detection device and a detection method, which are used for solving the technical problem that the existing kerosene leakage detection method cannot judge the leakage position and cannot detect the real bearing strength of a welding line, so that leakage occurs in the operation process of the cartridge receiver component.
The technical scheme adopted by the invention is as follows:
according to an aspect of the present invention, there is provided a cartridge assembly oil path sealing detection apparatus, the cartridge assembly including an inner cartridge and an outer cartridge, an oil path of the cartridge assembly including a port located on an end surface of the inner cartridge and an oil pipe interface located on an outer wall of the outer cartridge, the cartridge assembly oil path sealing detection apparatus including: a base for carrying the case assembly; the sealing pipe joint is used for being assembled at the port in a sealing mode, and a through hole used for communicating an oil way with an external air source is formed in the sealing pipe joint; the cover plate is fixedly connected with the base through a connecting rod and is pressed on the sealing pipe connector in a pressing mode, and a channel is formed in the cover plate corresponding to the through hole; the plugging piece is used for inserting the oil pipe interface to plug the oil pipe interface; the positioning piece is arranged on the base according to the angular position of the oil pipe connector and comprises a supporting block which is used for supporting and abutting against the oil pipe connector from the direction opposite to the insertion direction of the plugging piece.
Further, the sealing pipe joint comprises a first sealing part assembled in the port, a step part extending from the first sealing part along the radial direction and expanding outwards, and a second sealing part extending from the step part and assembled in a channel on the cover plate, wherein the outer diameter of the second sealing part is smaller than that of the step part, the cover plate is pressed on the upper surface of the step part, and the lower surface of the step part is in sealing and abutting contact with the upper surface of the port.
Furthermore, a first groove is formed in the periphery of the first sealing part, and a first sealing ring for realizing radial sealing between the port and the first sealing part is assembled in the first groove; the lower surface of the step part is provided with a second groove, and a second sealing ring for axially sealing the port is assembled in the second groove.
Furthermore, a quick pipe joint is connected in the channel through threads in a sealing manner, the two ends of the quick pipe joint are respectively communicated with the sealing pipe joint and an external air source, and the quick pipe joint protrudes out of the upper surface of the cover plate.
Furthermore, the plugging piece comprises an operating rod and a plug fixedly connected to one end of the operating rod and used for plugging in the oil pipe interface; the positioning piece further comprises a top block opposite to the supporting block, and a fixing hole used for supporting the fixed operating rod is formed in the top block.
Furthermore, the positioning piece also comprises a fixing part fixed on the base, and the top block and the supporting block respectively extend upwards from two ends of the fixing part; the fixing part is fixedly arranged on the upper surface of the base, and a convex block matched with the guide rail groove arranged on the base is convexly extended at the bottom of the fixing part.
Furthermore, one end of the connecting rod is assembled in an installation hole in the center of the base, and the other end of the connecting rod penetrates through the cover plate and is assembled with a nut used for locking the cover plate; the lower surface of the cover plate is pressed on the end surface of the central area of the inner casing and the sealing pipe joint.
Furthermore, the oil circuit sealing detection device for the casing assembly further comprises an installation block fixedly connected to the base, a penetrating positioning hole is formed in the installation block in the horizontal direction, and a bolt which is abutted to the outer wall of the outer casing to achieve angular positioning of the casing assembly is assembled in the positioning hole.
According to another aspect of the present invention, a method for detecting an oil seal of a cartridge assembly is further provided, where the method for detecting an oil seal of a cartridge assembly includes:
installing a sealing pipe joint at the port of the oil path, and clamping and fixing the casing assembly provided with the sealing pipe joint between the base and the cover plate;
installing a plugging piece at an oil pipe interface of the oil way;
connecting the sealing pipe joint with an external air source and an air pressure gauge;
and putting the whole of the installed casing assembly and the casing oil path sealing detection device into water, injecting compressed air into the sealing pipe joint, and observing whether gas leaks in the water.
Further, the casing assembly has a plurality of oil passages, and the step of connecting the sealing pipe joint with an external air source and an air pressure gauge comprises: and a plurality of sealing pipe joints corresponding to the plurality of oil paths are connected into one path by adopting a multi-way valve and then communicated with an external air source.
The invention has the following beneficial effects:
according to the oil path sealing detection device and the detection method of the cartridge receiver assembly, the oil pipe interface is plugged by the plugging piece, and the sealing pipe joint is in sealing connection with the port of the oil path, so that the port can be used as an air inlet for an external air source to enter, and the oil path is conveniently subjected to a pump pumping mode sealing test: the whole body is put into water, and after gas is injected, the unqualified position of the welding line can be conveniently and quickly judged by observing the position where bubbles appear in the water; and the supporting block of the positioning piece is utilized to support the oil pipe interface from the direction opposite to the insertion direction of the plugging piece, so that in the sealing process of inserting the plugging piece into the oil pipe interface, the plugging piece extrudes the oil pipe interface, the supporting block exerts reverse acting force on the oil pipe interface from the direction opposite to the insertion direction of the plugging piece, the force of the supporting block and the acting force are equal in magnitude and opposite in direction, the force of the supporting block and the acting force are greatly reduced, the sealing effect is ensured, and the possibly qualified welding seam or the welding seam needing repair welding is protected. The invention has simple structure and convenient operation, solves the problems of pipeline connection and gas sealing and the problem of accurate detection of the quality of welding seams, and is safe and reliable. The invention adopts the air pressure mode to carry out the weld joint inspection after the brazing, judges whether the air leakage or the air leakage position exists, can detect the real bearing strength of the weld joint, avoids the leakage in the operation process of the casing component, and has good effect, economy and practicability.
In addition to the objects, features and advantages described above, other objects, features and advantages of the present invention are also provided. The present invention will be described in further detail below with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate an embodiment of the invention and, together with the description, serve to explain the invention and are not intended to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of an oil seal detection device of a casing assembly according to a preferred embodiment of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 from a top view;
FIG. 3 is an enlarged view of section D of FIG. 1;
3 FIG. 34 3 is 3 a 3 cross 3- 3 sectional 3 view 3 taken 3 along 3 A 3- 3 A 3 of 3 FIG. 31 3; 3
FIG. 5 is a top view of the positioning member;
FIG. 6 is a cross-sectional view taken along line B-B of FIG. 2;
FIG. 7 is a schematic view of a plugging structure of the oil leakage path in FIG. 1;
fig. 8 is a sectional view taken along the direction C-C in fig. 2.
The reference numbers illustrate:
1. a case assembly; 10. an inner case; 11. an outer case; 12. a port; 13. an oil pipe interface; 14. air holes; 15. a port; 16. an interface;
2. a base; 20. lightening holes; 21. a main body portion; 22. a retaining wall; 23. an extension portion; 230. a guide rail groove;
3. sealing the pipe joint; 30. a through hole; 31. a first seal portion; 32. a step portion; 33. a second seal portion; 34. a first seal ring; 35. a second seal ring;
4. a cover plate; 40. a connecting rod; 41. a nut; 42. a base; 43. a convex portion;
5. a blocking member; 50. an operating lever; 51. a plug; 52. a plug; 520. a stopper portion; 521. an insertion portion; 53. a third seal ring; 54. a fourth seal ring;
6. a positioning member; 60. a support block; 601. a support surface; 61. a top block; 610. a fixing hole; 62. a fixed part; 620. a bump; 63. a top seat; 630. a fixing hole;
7. a quick pipe joint;
8. mounting blocks; 81. a bolt; 810. a groove;
9. a U-shaped clamping block; 90. a lower fixing portion; 91. an upper fixing portion; 92. a connecting portion; 93. a hexagonal compression screw; 94. rubber stopper.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
The invention provides a cartridge assembly oil path sealing detection device which is used for a small aeroengine eddy current cartridge welding assembly after brazing welding and is used for detecting the quality of an oil path welding line after vacuum welding.
Referring to fig. 1 and 2, the braze-welded casing assembly 1 includes an inner casing 10 and an outer casing 11 having a total of four oil passages: an oil supply path E, a front oil return path F, a rear oil return path G and an oil leakage path H. The oil supply path E, the front oil return path F, and the rear oil return path G are similar in structure, and each of the three oil paths includes a port 12 located on an end surface of the inner casing 10, an oil pipe interface 13 located on an outer wall of the outer casing 11, and an internal pipeline (not shown) communicating the two. The end face of the outer casing 11 is provided with three air holes corresponding to the oil pipe joints 13 of the three oil ways, and each air hole is staggered with the corresponding oil pipe joint 13 in the vertical direction. The oil pipe interface 13 on the outer wall of the outer casing 11 is bent to form a certain angle, so that the oil pipe is welded to communicate with the oil pipe interface 13 and the corresponding air hole in the next welding process. The leakage path H includes a port 15 located on the inner side wall of the inner casing 10, a port 16 located on the outer wall of the outer casing 11, and an internal pipeline communicating the two.
Referring to fig. 1 to 4, the oil path sealing detection apparatus of a casing assembly according to a preferred embodiment of the present invention includes: a base 2 for carrying the case assembly 1; a sealing pipe joint 3 for sealing and assembling the port 12, wherein a through hole 30 for communicating an oil path and an external air source (not shown) is arranged inside the sealing pipe joint 3; the cover plate 4 is fixedly connected with the base 2 through a connecting rod 40 and covers the sealing pipe joint 3 in a pressing mode, and a channel is formed in the cover plate 4 corresponding to the through hole 30; the plugging piece 5 is used for inserting the oil pipe interface 13 to plug the oil pipe interface 13; the positioning piece 6 is arranged on the base 2 according to the angular position of the oil pipe interface 13, and the positioning piece 6 comprises a supporting block 60 which is used for supporting and abutting against the oil pipe interface 13 from the direction opposite to the insertion direction of the plugging piece 5. According to the oil path sealing detection device for the cartridge receiver assembly, the oil pipe connector 13 is plugged by the plugging piece 5, and the sealing pipe joint 3 is in sealing connection with the port 12 of the oil path, so that the port 12 can be used as an air inlet to be connected with an external air source for compressed air to enter, and the sealing performance test of the oil path in a pumping mode is facilitated: the whole body is put into water, and after gas is injected, the unqualified position of the welding line can be conveniently and quickly judged by observing the position where bubbles appear in the water; and the supporting block 60 of the positioning piece 6 is used for supporting the oil pipe interface 13 from the direction opposite to the insertion direction of the plugging piece 5, so that in the sealing process of inserting the plugging piece 5 into the oil pipe interface 13, the plugging piece 5 extrudes the oil pipe interface 13, meanwhile, the supporting block 60 exerts reverse acting force on the oil pipe interface 13 from the direction opposite to the insertion direction of the plugging piece 5, the force of the two is equal in magnitude and opposite in direction, and the force of the sealing joint on the oil pipe interface 13 in the sealing process is greatly reduced, the sealing effect is ensured, and therefore the welding joint which is possibly qualified or needs to be subjected to repair welding is protected. The detection device has simple structure and convenient operation, solves the problems of pipeline connection and gas sealing, also solves the problem of accurate detection of the quality of the welding seam, and is safe and reliable. The detection device is used for detecting the welding seam after brazing, and judging whether air leakage or the air leakage position exists, and is good in effect, economical and practical.
Referring to fig. 1 and 2, the base 2, which is a main part carrying the entire casing assembly 1, has a substantially circular shape corresponding to the casing assembly 1. In consideration of the large volume of the base 2 itself, the base 2 of the present invention is made of a light duralumin material, and a plurality of lightening holes 20 are designed in the middle area to remove excess material for lightening.
The base 2 comprises a main body part 21 used for supporting the bottom of the casing component 1, a mounting hole used for mounting the connecting rod 40 is formed in the center of the main body part 21, and the connecting rod 40 is mounted at the center of the casing component 1 to position the circle center of the casing component 1. The edge of the main body 21 is formed with a stop wall 22, and the stop wall 22 is used to stop the bottom portion of the outer wall of the outer casing 11 for positioning the cartridge assembly 1 in the circumferential direction. The retaining wall 22 has an extension 23 extending horizontally from the periphery thereof, and the extension 23 is higher than the main body 21 at the bottom thereof. The extension 23 is used for mounting and fixing other auxiliary elements, such as the mounting block 8 and the positioning member 6. Wherein, a location of installing piece 8 on extension 23 through screw fixed connection, the last locating hole that runs through of horizontal direction of edge of installing piece 8, the assembly bolt 81 in the locating hole, the terminal butt of bolt 81 is to outer casing 11's outer wall on to carry out the angular positioning to casing subassembly 1. In order to conveniently adjust the insertion depth of the bolt 81, a groove 810 is formed in the side wall of the bolt 81, a screw hole is correspondingly formed above the mounting block 8, a screw is installed in the screw hole, the screw is screwed down to enter the groove 810 in the bolt 81 to fix the bolt 81 which is inserted in place, and the bolt-fixing device is simple in structure, convenient to adjust and reliable in connection. The upper surface of the extension 23 is further provided with a guide groove 230 corresponding to the position of the positioning member 6, for the positioning member 6 to be slidably fitted. In the preferred embodiment, the oil pipe interfaces of the oil supply passage E, the front oil return passage F and the rear oil return passage G are respectively and correspondingly provided with the guide rail groove 230.
In the preferred embodiment of the present invention, the connecting rod 40 is a threaded rod, the head of which is fixed in a mounting hole in the center of the base 2, and the rod passes through the center of the casing assembly 1 from the head upwards, and the end of which protrudes upwards out of the cover plate 4 and is equipped with a nut 41 for locking to the cover plate 4. The invention can realize the clamping and fixing of the casing component 1 by adopting a simple structure, has reliable connection and is beneficial to the subsequent sealing detection test.
The cover plate 4 includes a circular base portion 42 and a protrusion 43 protruding outward from the base portion 42. The base 42 is matched with the end face of the central area of the inner casing 10, and the periphery of the base 42 is positioned by means of a convex ring of the central area of the inner casing 10, so that the cover plate 4 is preliminarily fixed above the casing assembly 1. Three openings are formed in the base 42 to reduce weight. The convex part 43 corresponds to the port 12 of the oil path, and the bottom surface of the convex part 43 is higher than the bottom surface of the base part 42, and a step shape is formed between the convex part 43 and the base part 42, so that the convex ring can conveniently position the outer periphery of the base part 42. In the preferred embodiment, since the oil supply passage E and the port 12 of the rear oil return passage G are relatively close to each other, and the port 12 of the front oil return passage F is separately located on the other side, two protrusions 43 are correspondingly protruded on the base portion 42, wherein one protrusion 43 corresponds to the oil supply passage E and the port 12 of the rear oil return passage G, and the other protrusion 43 corresponds to the port 12 of the front oil return passage F. The center of the base 42 is provided with a through hole for the end of the screw to pass through. The lower surface of the base 42 is pressed against the end surface of the central region of the inner casing 10 under the locking action of the nut 41 to clamp the casing assembly 1 between the cover plate 4 and the base 2; and the convex part 43 is pressed on the corresponding sealing pipe joint 3 to strengthen the sealing function of the sealing pipe joint 3 and ensure the good sealing detection.
Since the three ports 12 on the end surface of the inner casing 10 are smooth holes and have large positional errors, it is difficult to position and seal the three ports 12 on the end surface. The invention adopts the sealing pipe joints 3 at three ports 12 of the end surface of the inner casing 10 for end surface and radial sealing, and the connection of the three sealing pipe joints 3 and an oil way and the positioning are compressed and positioned by the cover plate 4.
Referring to fig. 3, the sealing pipe joint 3 of the present invention is used for connecting the cover plate 4 and the port 12 of the end face of the inner casing 10, and is substantially composed of a cylindrical and hexagonal head structure, and has a through hole 30 inside. The sealing coupling 3 comprises a first sealing portion 31 fitted in the port 12, a step portion 32 extending radially outwardly from the first sealing portion 31, and a second sealing portion 33 extending from the step portion 32 and fitted in a passage on the cover plate 4. The through hole 30 penetrates the first sealing portion 31, the step portion 32, and the second sealing portion 33. The outer diameter of the second sealing portion 33 is smaller than the outer diameter of the step portion 32, the convex portion 43 of the cover plate 4 presses the upper surface of the step portion 32, and the lower surface of the step portion 32 is in sealing contact with the upper surface of the port 12. The pressing force on the sealing pipe joint 3 when the cover plate 4 is locked enables the sealing pipe joint to be well connected with the port 12 positioned on the oil way, and meanwhile, the sealing effect is enhanced.
Further, in the preferred embodiment, the periphery of the first sealing portion 31 is provided with a first groove, and the first groove is provided with a first sealing ring 34 for realizing radial sealing between the port 12 and the first sealing portion 31. The lower surface of the step 32 is provided with a second groove in which a second sealing ring 35 for axially sealing the port 12 is fitted. By the structure, the radial and end face (axial) of the connecting part of the oil path port 12 are simultaneously sealed, and the safety and reliability during sealing detection are ensured.
In order to make the detection device more convenient to use, the invention preferably uses a portable quick pipe joint 7 to connect the oil path port 12 and the compressed air pipe. Specifically, the inner wall of the passage of the cover plate 4 is provided with threads, and the quick coupling 7 is screwed and sealed in the passage. The two ends of the quick pipe joint 7 are respectively communicated with the sealing pipe joint 3 and an external air source. The upper end of quick coupling 7 protrudes above the upper surface of cover plate 4 for connection to an external air source, such as a compressed air line. The interior of the quick pipe joint 7 is formed by nesting a conical elastic steel ring and a movable plunger hole, the exterior of the quick pipe joint is provided with a hexagonal structure so as to be convenient for screwing, and pipe threads on the exterior of the lower end of the quick pipe joint can be directly connected and sealed with pipe threads on the cover plate 4. In order to strengthen the sealing, a sealing ring is arranged below the hexagonal screwing structure and is in sealing fit with the channel of the cover plate 4. The quick pipe joint 7 is convenient to use, and the outlet of the compressed air pipe can be directly inserted into the quick pipe joint 7, so that air can be introduced into an oil pipeline inside the casing component 1 without air leakage. The quick pipe joint 7 is adopted to connect the oil path port 12 and the compressed air pipe, which is beneficial to random disassembly and assembly.
Because the quality of the welding seam is unknown and the tension born by the brazing welding position is not too large after the casing assembly 1 is welded by vacuum brazing, the detection device of the invention utilizes the force Newton third constant rate and designs the U-shaped positioning piece 6 at the oil pipe interface 13.
Referring to fig. 4 and 6, the plugging member 5 of the present invention includes an operating rod 50, and a plug 51 for plugging in the oil pipe interface 13 is fixedly connected to one end of the operating rod 50. Preferably, the operating rod 50 is a screw, the plug 51 is a conical structure made of rubber material, and the plug 51 is fixedly connected to one end of the screw. By screwing the screw, the plug 51 can be inserted into the oil pipe interface 13 to plug the oil pipe interface 13.
Referring to fig. 4 and 5, taking the positioning element 6 used in the oil supply path E as an example, the positioning element 6 includes a fixing portion 62 for fixing to the base 2, and a supporting block 60 and a top block 61 extend upward from two ends of the fixing portion 62. The supporting block 60 and the top block 61 are oppositely disposed with a gap therebetween, thereby forming a U-shaped structure. The fixing portion 62 is fixed to the upper surface of the extension portion 23. Preferably, the fixing portion 62 is mounted on the upper surface of the extending portion 23 by a screw, and a protrusion 620 matched with the guide groove 230 on the base 2 protrudes from the bottom of the fixing portion 62. The positioning element 6 of the present invention adopts a horizontal sliding installation mode, and the projection 620 horizontally slides along the guide rail groove 230 to enter a corresponding position to support the oil pipe interface 13, so that the position alignment is more accurate, and the installation is convenient.
The top block 61 is located on the front side of the oil pipe interface 13, and is provided with a fixing hole 610 for supporting and fixing the operating rod 50. In the preferred embodiment, the inner wall of the fixing hole 610 is threaded to mate with threads on the exterior of the screw. Through fixing the screw on kicking block 61, only need to screw up the screw and can pack end cap 51 into oil pipe interface 13 and realize the shutoff, only need after the experiment accomplish loosen the screw make shutoff piece 5 withdraw from oil pipe interface 13 can, operation convenient to use. In this embodiment, since the end of the oil pipe interface 13 is inclined upwards, the upper portion of the top block 61 is inclined, and the fixing hole 610 on the top block 61 is higher than the end of the oil pipe interface 13, so as to facilitate the operating rod 50 to be correspondingly inclined and fixed on the top block 61, and ensure that the insertion direction of the plugging member 5 is matched with the oil pipe interface 13 when screwing down.
The support block 60 is located opposite to the back of the oil pipe connector 13, and has an arc support surface 601 matching with the arc wall surface of the back of the oil pipe connector 13. When a user screws the screw, the plug 51 extrudes the oil pipe interface 13, and meanwhile, the back of the oil pipe interface 13 is acted by the supporting surface 601 with force, so that the effect of acting on the welding line of the oil pipe interface 13 in the sealing process is basically zero, the sealing effect is ensured, and the welding line which is possibly qualified or needs repair welding is protected.
For the back oil return path G and the front oil return path F, the structure of the positioning piece 6 selected by the two oil paths is basically the same as that of the positioning piece 6 used by the oil supply path E. The difference is that as shown in fig. 6, since the two oil paths are located at the end of the oil pipe interface 13 on the outer wall of the outer casing 11 and are horizontal, the top block 61 and the supporting block 60 of the positioning element 6 are both in a parallel and upward protruding structure, and the fixing hole 610 formed on the top block 61 is located at substantially the same height as the end of the oil pipe interface 13, so that when the screw is tightened, the plug 51 enters the oil pipe interface 13 in the horizontal direction to ensure reliable plugging.
Referring to fig. 7, the structure of the oil leakage path H is slightly different from the other three oil paths, and the adopted sealing structure is also slightly different: the port 15 at the inner side of the oil leakage path H is directly plugged by a plug 52 fixedly connected to the tail end of an operating rod 50 (namely a screw), and the port 16 at the outer side of the oil leakage path H is directly installed in a quick pipe joint to be connected with an external air source. The plug 52 is substantially T-shaped and includes a stopper 520 and an insertion portion 521. The insertion portion 521 is inserted into the oil passage port 15, and the stopper 520 is sealed and stopped at the end face of the port 15. To enhance the sealing, the preferred embodiment of the present invention provides a groove in the outer periphery of the insert 521, and a third sealing ring 53 in the groove for radially sealing the inner wall of the port 15. Optionally, a fourth sealing ring 54 for end face sealing is provided between the stop 520 and the end face of the port 15. Correspondingly, a top seat 63 for supporting a screw is correspondingly arranged on the base 2, and a fixing hole 630 for passing the screw is opened on the top seat 63. The bottom of the top base 63 is fixedly attached to the upper surface of the main body 21 by fastening screws.
Referring to fig. 8, the oil path sealing detection device of the casing assembly further includes a U-shaped clamping block 9 positioned at the position of the air hole 14 on the end surface of the outer casing 11, and the U-shaped clamping block is used for positioning and pressing the outer wall pipeline after the oil pipe is welded and connected between the oil pipe connector 13 and the air hole 14 so as to facilitate sealing detection. The U-shaped clamping block 9 includes a lower fixing portion 90 and an upper fixing portion 91, the lower fixing portion 90 is fixed on the oil pipe on the outer wall of the outer casing 11, the upper fixing portion 91 is located above the end face of the outer casing 11, and the upper fixing portion 91 and the lower fixing portion 90 are connected by a connecting portion 92. The upper fixing portion 91 is provided with a hole for mounting a hexagonal compression screw 93. The air hole 14 on the end face of the outer casing 11 is plugged by plugging the rubber plug 94, and the rubber plug 94 is pressed by a hexagonal compression screw 93 mounted on the upper fixing portion 91, so as to ensure the sealing effect.
The oil circuit sealing detection device of the casing assembly further comprises a barometer fixedly mounted on the upper surface of the cover plate 4 and an external air source used for being connected with the quick pipe joint 7. Optionally, the detection apparatus of the present invention further includes a multi-way valve (not shown) for connecting the sealing pipe joints 3 of the plurality of oil paths into one passage, so that the sealing detection of the plurality of oil paths can be realized at the same time. Specifically, three quick pipe joints 7 may be connected into one path by a four-way valve, and two paths may be connected into one path by a three-way valve.
According to the oil circuit sealing detection device for the cartridge receiver assembly, the supporting block 60 of the positioning piece 6 is supported on the back of the oil pipe connector 13, so that the force of the plugging piece 5 acting on the welding line of the oil pipe connector 13 during sealing is reduced; the quick pipe joint 7 with simple structure and convenient operation can detect the weld quality of a plurality of oil ways together or one oil way independently, thereby solving the problems of pipeline connection and gas sealing and the problem of accurate detection of the weld quality. The method is used for detecting the welding seam after brazing and judging whether the air leakage or the air leakage position exists, and has good effect, economy and practicability.
According to another aspect of the present invention, a method for detecting an oil seal of a cartridge assembly is further provided, where the method for detecting an oil seal of a cartridge assembly includes:
s100, installing a sealing pipe joint 3 at a port 12 of an oil way, and clamping and fixing the casing assembly 1 assembled with the sealing pipe joint 3 between the base 2 and the cover plate 4;
s200, installing a plugging piece 5 at an oil pipe interface 13 of an oil way;
s300, connecting the sealing pipe joint 3 with an external air source and an air pressure meter;
s400, putting the whole of the mounted casing assembly 1 and the casing oil path sealing detection device into water, injecting compressed air into the sealing pipe joint 3, and observing whether gas leaks in the water.
The invention can detect one oil circuit independently, and specifically, the step S100 comprises the following steps:
s101, the connecting rod 40 is upwards arranged in a central mounting hole of the base 2 and fixed;
s102, correspondingly placing the welded casing assembly 1 on the main body part 21 of the base 2, enabling the center of the casing assembly 1 to penetrate through the connecting rod 40 and the bottom of the outer wall of the outer casing 11 to be stopped by the blocking wall 22, and adjusting the angular position of the casing assembly 1 to enable the position of each oil pipe interface 13 to correspond to the position of the guide rail groove 230 on the extension part 23;
s103, after the sealing pipe joint 3 is installed at the port 12, the channel position of the cover plate 4 is aligned with the through hole 30 of the sealing pipe joint 3 and correspondingly pressed and fixed on the upper end face of the inner casing 10, and the quick pipe joint 7 is installed on the upper part of the channel;
s104, horizontally sliding the lug 620 at the bottom of the positioning element 6 to the oil pipe interface 13 along the guide rail groove 230, so that the supporting block 60 is correspondingly supported on the back of the oil pipe interface 13, the top block 61 is opposite to the tail end of the oil pipe interface 13, and fixing the fixing part 62 to the base 2 by adopting a screw;
s105, the cover plate 4 is locked with the nut 41, and the latch 81 is fitted into the mounting block 8 to fix the angular position of the casing assembly 1.
Further, the step S200 of installing the plugging member 5 at the oil pipe interface 13 of the oil passage includes the steps of:
s201, enabling an operating rod 50, namely a screw to penetrate through a fixing hole 610 in the top block 61, and assembling a fixing plug 51 at the tail end of the screw;
s202, the screw is screwed down, so that the plug 51 is inserted into the oil pipe connector 13 for plugging.
Optionally, the casing assembly 1 has a plurality of oil passages, and the step of connecting the sealing coupling 3 to an external air source and an air pressure gauge includes: a plurality of sealing pipe joints 3 corresponding to a plurality of oil paths are connected into one path by adopting a multi-way valve and then communicated with an external air source. The invention can also detect four oil paths simultaneously, specifically, the quick pipe joints 7 corresponding to the ports 12 of the oil supply path E, the rear oil return path G and the front oil return path F can be connected into one path through a four-way valve, the one path is connected with the quick pipe joint 7 at the external interface of the oil leakage path H into one path through a three-way valve, and then an air pressure meter and compressed air are connected. Therefore, the four oil ways can be simultaneously detected by inputting compressed air from one air inlet, and the detection is convenient and fast.
Optionally, in the step S400, after the whole is put into water and compressed air is injected, the pressure value of the barometer is required to be maintained at 0.5MPa to 0.6MPa for 5 minutes. The invention adopts a pumping mode to carry out tightness detection, carries out detection test according to a preset air pressure value, and can detect that the welding line can really bear strength, thereby avoiding the leakage problem in the operation process of the casing component 1.
The detection method can conveniently and quickly judge the position of the unqualified welding line according to the position of the bubbles in the water, and has simple operation and reliable detection.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. The utility model provides a cartridge receiver subassembly oil circuit seals detection device, cartridge receiver subassembly (1) include interior cartridge receiver (10) and outer cartridge receiver (11), and the oil circuit of cartridge receiver subassembly (1) is including port (12) that are located on the terminal surface of interior cartridge receiver (10) and oil pipe interface (13) that are located the outer wall of outer cartridge receiver (11), its characterized in that, cartridge receiver subassembly oil circuit seals detection device includes:
a base (2) for carrying the case assembly (1);
the sealing pipe joint (3) is used for being assembled on the port (12) in a sealing mode, and a through hole (30) used for communicating an oil way with an external air source is formed in the sealing pipe joint (3);
the cover plate (4) is fixedly connected with the base (2) through a connecting rod (40) and is pressed on the sealing pipe joint (3), and a channel is formed in the cover plate (4) corresponding to the through hole (30);
the plugging piece (5) is used for inserting the oil pipe interface (13) to plug the oil pipe interface (13);
the positioning piece (6), the positioning piece (6) is arranged on the base (2) according to the angular position of the oil pipe connector (13), and the positioning piece (6) comprises a supporting block (60) which is used for supporting and abutting against the oil pipe connector (13) from the direction opposite to the insertion direction of the plugging piece (5).
2. The oil seal detection device of the casing assembly according to claim 1,
sealing tube connects (3) including assemble in first sealing (31) in port (12), certainly step portion (32) that first sealing (31) expand outward along the footpath and certainly step portion (32) extend and assemble second sealing (33) in the passageway on apron (4), wherein, the external diameter of second sealing (33) is less than the external diameter of step portion (32), apron (4) press in the upper surface of step portion (32), the lower surface of step portion (32) then seal the butt in the upper surface of port (12).
3. The oil seal detection device of the casing assembly according to claim 2,
a first groove is arranged on the periphery of the first sealing part (31), and a first sealing ring (34) used for realizing radial sealing between the port (12) and the first sealing part (31) is assembled in the first groove;
the lower surface of the step portion (32) is provided with a second groove in which a second seal ring (35) for axially sealing the port (12) is fitted.
4. The oil seal detection device of the casing assembly according to claim 1,
and the channel is internally connected with a quick pipe joint (7) with two ends respectively used for communicating the sealing pipe joint (3) and an external air source through threads in a sealing manner, and the quick pipe joint (7) protrudes out of the upper surface of the cover plate (4).
5. The oil seal detection device of the casing assembly according to claim 1,
the plugging piece (5) comprises an operating rod (50) and a plug (51) which is fixedly connected to one end of the operating rod (50) and used for plugging in the oil pipe interface (13);
the positioning piece (6) further comprises a top block (61) opposite to the supporting block (60), and a fixing hole (610) used for supporting and fixing the operating rod (50) is formed in the top block (61).
6. The oil seal detection device of the casing assembly according to claim 5,
the positioning piece (6) further comprises a fixing part (62) fixed to the base (2), and the top block (61) and the supporting block (60) respectively extend upwards from two ends of the fixing part (62);
the fixing part (62) is fixedly arranged on the upper surface of the base (2), and a convex block (620) matched with the guide rail groove (230) arranged on the base (2) is convexly extended at the bottom of the fixing part (62).
7. The oil seal detection device of the casing assembly according to claim 1,
one end of the connecting rod (40) is assembled in an installation hole in the center of the base (2), and the other end of the connecting rod penetrates through the cover plate (4) and is provided with a nut (41) used for being locked on the cover plate (4);
the lower surface of the cover plate (4) is pressed on the end surface of the central area of the inner casing (10) and the sealing pipe joint (3).
8. The oil seal detection device of the casing assembly according to claim 1,
the oil path sealing detection device for the casing assembly further comprises an installation block (8) fixedly connected to the base (2), a penetrating positioning hole is formed in the installation block (8) along the horizontal direction, and a bolt (81) abutted to the outer wall of the outer casing (11) to achieve angular positioning of the casing assembly (1) is assembled in the positioning hole.
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| CN201810922513.6A CN108775990B (en) | 2018-08-14 | 2018-08-14 | Oil way sealing detection device and detection method for casing assembly |
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| CN108775990B true CN108775990B (en) | 2020-05-19 |
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| CN110806289B (en) * | 2019-11-28 | 2021-04-30 | 河南航天液压气动技术有限公司 | Test tool for multi-plunger type pipeline assembly |
| CN114112229A (en) * | 2020-08-31 | 2022-03-01 | 中国航发商用航空发动机有限责任公司 | Tightness detection device of gas turbine engine casing |
| CN112345170B (en) * | 2020-10-22 | 2022-08-30 | 中国航发贵州黎阳航空动力有限公司 | Aeroengine supporting casing airtightness detection clamp and detection method |
| CN112371776B (en) * | 2020-10-22 | 2023-03-24 | 中国航发贵州黎阳航空动力有限公司 | Vacuum thermal sizing die and method for engine support case |
| CN113310634B (en) * | 2021-05-20 | 2023-05-26 | 青岛中科国晟动力科技有限公司 | Method and assembly for detecting air tightness of casing of gas turbine |
| CN117147164B (en) * | 2023-11-01 | 2024-01-30 | 中国航发沈阳发动机研究所 | Hole detection device for double-layer casing of aero-engine |
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| CN201289422Y (en) * | 2008-09-18 | 2009-08-12 | 广西玉柴机器股份有限公司 | Fixture for detecting air tightness of oil feed hole of diesel engine cylinder cover |
| CN102928178B (en) * | 2012-10-31 | 2014-12-24 | 沈阳黎明航空发动机(集团)有限责任公司 | Differential-pressure sealing test device and test method thereof |
| CN204389107U (en) * | 2014-08-17 | 2015-06-10 | 中国航空工业集团公司沈阳发动机设计研究所 | A kind of gas turbine casing suppresses leakage test blanking cover |
| CN104236804B (en) * | 2014-09-22 | 2017-01-25 | 西安航空动力股份有限公司 | Pressure test tool with function of axial deformation compensation |
| CN204328271U (en) * | 2014-11-19 | 2015-05-13 | 殷平芝 | A kind of vacuum leak hunting joint |
| CN105445026B (en) * | 2015-11-23 | 2017-11-10 | 成都发动机（集团）有限公司 | Device for the casing diffuser hydraulic test of aeroengine combustor buring room |
| CN105486508B (en) * | 2015-11-23 | 2017-12-05 | 成都发动机（集团）有限公司 | Device for the detachable shell hydraulic test of aeroengine combustor buring room casing |
| CN206038251U (en) * | 2016-08-25 | 2017-03-22 | 河南飞龙(芜湖)汽车零部件有限公司 | A leak test anchor clamps for exhaust manifold |
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