CN117570210A - Vacuum dynamic seal adjusting device for vacuum thermal test - Google Patents
Vacuum dynamic seal adjusting device for vacuum thermal test Download PDFInfo
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- CN117570210A CN117570210A CN202311546877.6A CN202311546877A CN117570210A CN 117570210 A CN117570210 A CN 117570210A CN 202311546877 A CN202311546877 A CN 202311546877A CN 117570210 A CN117570210 A CN 117570210A
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- 238000012360 testing method Methods 0.000 title claims abstract description 50
- 238000004088 simulation Methods 0.000 claims abstract description 53
- 238000007789 sealing Methods 0.000 claims abstract description 43
- 239000011553 magnetic fluid Substances 0.000 claims abstract description 38
- 238000009434 installation Methods 0.000 claims description 14
- 210000001503 joint Anatomy 0.000 claims description 2
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000010963 304 stainless steel Substances 0.000 description 1
- 229910000984 420 stainless steel Inorganic materials 0.000 description 1
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006353 environmental stress Effects 0.000 description 1
- 229920001973 fluoroelastomer Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000013139 quantization Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 230000009897 systematic effect Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
- 238000012800 visualization Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/16—Sealings between relatively-moving surfaces
- F16J15/40—Sealings between relatively-moving surfaces by means of fluid
- F16J15/43—Sealings between relatively-moving surfaces by means of fluid kept in sealing position by magnetic force
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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
- G01M13/00—Testing of machine parts
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- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The application discloses a vacuum dynamic seal adjusting device for vacuum thermal test, including magnetic fluid seal assembly, it includes the subassembly body and sets up the connecting axle on the subassembly body, elastic sealing spare for flexonics magnetic fluid seal assembly and equipment, adjustable support installs on magnetic fluid seal assembly for adjust the position of magnetic fluid seal assembly, install the base, be used for placing subaerial support to adjustable support. According to the device, the rotation characteristic of the test product in the vacuum environment simulation equipment cabin is transmitted to the outside of the simulation equipment cabin, the shaft system axis of the test system can be conveniently and accurately adjusted, multiple system errors are effectively reduced, multiple working states of the space rotation part in the on-orbit operation can be more accurately simulated, and the reliability and the accuracy of the space rotation product environment test are ensured.
Description
Technical Field
The invention relates to the technical field of vacuum heat tests of spacecraft products, in particular to a vacuum dynamic seal adjusting device for a vacuum heat test.
Background
In the field of aerospace, spacecraft products generally work in coupling environments where two or more environmental stresses act simultaneously in an in-orbit service stage, such as high vacuum, cold black background, temperature alternation and the like. For partial space rotating parts such as a driving assembly, a joint and the like, moment load and moment inertia on a shaft system need to be overcome to complete a set function when the product is in track work, and the product is often under the comprehensive effect of multi-environment stress of vacuum, cold black background, temperature alternation and moment load. In order to accurately simulate the working state of the space rotating component in-orbit service, the rotating characteristic of the space rotating component needs to be transmitted to the outside of the vacuum cabin by using a dynamic sealing device to perform load simulation and measurement. The vacuum dynamic sealing device is used as a key structure for connecting products in the vacuum cabin and equipment outside the cabin, and the axial position and the installation precision of the vacuum dynamic sealing device have great influence on the overall precision and the test accuracy of a subsequent test system. In order to ensure the reliability and accuracy of the vacuum heat test of the space rotation product, the defects of product design and manufacture are exposed as much as possible, insufficient assessment of space products in the test process is avoided, and the vacuum dynamic seal adjusting device used in the vacuum heat test process of the space rotation part has higher adjusting requirements.
Disclosure of Invention
In view of the foregoing drawbacks or deficiencies in the prior art, it is desirable to provide a dynamic vacuum seal adjustment device for use in a thermal vacuum test.
In a first aspect, there is provided a dynamic vacuum seal adjustment device for a thermal vacuum test, comprising:
the magnetic fluid sealing assembly comprises an assembly body and a connecting shaft arranged on the assembly body, wherein a first end of the connecting shaft is used for extending into vacuum environment simulation equipment and connecting with a test product, a second end of the connecting shaft is used for connecting with load equipment,
an elastic sealing element, which is arranged between the magnetic fluid sealing component and the vacuum environment simulation equipment and is used for providing flexible connection for the magnetic fluid sealing component and the vacuum environment simulation equipment,
an adjustable bracket mounted on the magnetic fluid seal assembly for adjusting the position of the magnetic fluid seal assembly,
the adjustable support is arranged on the installation base, and the installation base is used for being placed on the ground to support the adjustable support.
As an achievable mode, the elastic sealing element is a corrugated pipe, one end of the corrugated pipe is in flange connection with one end of the assembly body, which is close to the vacuum environment simulation equipment, the other end of the corrugated pipe is in flange connection with the vacuum environment simulation equipment, and the connecting shaft penetrates through the corrugated pipe and stretches into the vacuum environment simulation equipment.
As an achievable way, the adjustable support comprises: the bracket body is provided with an annular supporting ring, the annular supporting ring of the bracket body is sleeved on the assembly body and is fixedly connected with the assembly body,
the bracket mounting plate is arranged on the bracket body and bears the bracket body, a plurality of first direction adjusting devices are arranged on the bracket mounting plate and are used for adjusting the angle of the bracket body in a first direction,
the support bottom plate, the support bottom plate sets up the support mounting panel with between the installation base, be equipped with a plurality of second direction adjusting device on the support bottom plate, be used for adjusting in the second direction the angle of support body, first direction with the second direction sets up perpendicularly.
As an achievable mode, a plurality of threaded holes are arranged on the bracket mounting plate,
the first direction adjusting device comprises a first adjusting bolt, the first adjusting bolt is arranged in the threaded hole, one end of the first adjusting bolt is in butt joint with the support base plate, and the other end of the first adjusting bolt extends out of the support mounting plate. As an achievable manner, four first direction adjusting devices are disposed on the bracket mounting plate, and the first direction adjusting devices are distributed in an array.
As an achievable way, the second direction adjusting means comprise a second adjusting bolt and a fastening nut,
the support bottom plate is characterized in that a plurality of mounting holes are formed in the side wall of the support bottom plate, the fastening nuts are fixedly arranged at the openings of the mounting holes, and the second adjusting bolts are installed in the mounting holes through the fastening nuts and used for adjusting the length of the second adjusting bolts extending out of the support bottom plate to adjust in the second direction.
As an achievable mode, the cross section of the bracket bottom plate is rectangular, two second direction adjusting devices are arranged on each side wall of the bracket bottom plate, and the two second direction adjusting devices are arranged close to the end parts of the side walls.
The device comprises a bracket base plate, a first direction adjusting device, a second direction adjusting device, a locking device and a locking device, wherein the locking device is arranged in one-to-one correspondence with the first direction adjusting device and is used for fixing the bracket base plate and the bracket mounting plate.
As an achievable way, the locking means comprise a locking bolt and a locking nut,
the support bottom plate is provided with a counter bore, the support mounting plate is provided with a through hole corresponding to the counter bore, the locking bolt is arranged in the counter bore of the support bottom plate and penetrates through the through hole, and the locking nut is matched with the locking bolt and arranged on one surface of the support mounting plate away from the support bottom plate.
As an achievable mode, the first direction adjusting device and the second direction adjusting device both adopt micrometer structures.
According to the technical scheme provided by the embodiment of the application, the rotation characteristic of the test product in the vacuum environment simulation equipment cabin is transmitted to the outside of the simulation equipment cabin through the device, the shafting axis of the test system can be conveniently and accurately adjusted, the accuracy of shafting and coaxiality adjustment is improved, the coaxiality adjustment difficulty is reduced, multiple system errors are effectively reduced, multiple working states of the space rotation part during on-orbit running can be more accurately simulated, and the reliability and the accuracy of the space rotation product environment test are ensured.
Drawings
Other features, objects and advantages of the present application will become more apparent upon reading of the detailed description of non-limiting embodiments, made with reference to the following drawings, in which:
FIG. 1 is a front view of a vacuum dynamic seal adjusting apparatus for vacuum heat test in the present embodiment;
fig. 2 is a top view of the dynamic vacuum seal adjuster for the thermal vacuum test in this embodiment.
Reference numerals:
the vacuum environment simulation device 10, the magnetic fluid sealing assembly 20, the assembly body 21, the connecting shaft 22, the elastic sealing element 30, the adjustable bracket 40, the bracket body 41, the bracket mounting plate 42, the bracket bottom plate 43, the mounting base 50, the first direction adjusting device 60, the second direction adjusting device 70 and the locking device 80.
Detailed Description
The present application is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be noted that, for convenience of description, only the portions related to the invention are shown in the drawings.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1 and 2, the present embodiment provides a vacuum dynamic seal adjusting device for a vacuum thermal test, including:
the magnetic fluid sealing assembly 20 comprises an assembly body 21 and a connecting shaft 22 arranged on the assembly body 21, wherein a first end of the connecting shaft 22 is used for extending into the vacuum environment simulation equipment 10 and connecting with a test product, a second end is used for connecting with a load equipment,
an elastic sealing member 30, the elastic sealing member 30 being installed between the magnetic fluid sealing assembly 20 and the vacuum environment simulation apparatus 10, for providing a flexible connection to the magnetic fluid sealing assembly 20 and the vacuum environment simulation apparatus 10,
an adjustable bracket 40, the adjustable bracket 40 being mounted on the magnetic fluid seal assembly 20 for adjusting the position of the magnetic fluid seal assembly 20,
a mounting base 50, the adjustable bracket 40 is mounted on the mounting base 50, and the mounting base 50 is used for being placed on the ground to support the adjustable bracket 40.
The device provided by the embodiment is mainly applied to the test process of aerospace products, relevant parameters of the test products in the vacuum environment simulation equipment 10 are transmitted through the products, and the device cannot cause systematic errors to test data of the test products; according to the embodiment, the rotation characteristics of the test product in the cabin of the vacuum environment simulation equipment 10 are transmitted to the outside of the cabin of the simulation equipment through the device, the shaft system axis of the test system can be conveniently and accurately adjusted, the accuracy of shaft system coaxiality adjustment is improved, the coaxiality adjustment difficulty is reduced, multiple system errors are effectively reduced, the simulation of multiple working states of the space rotation part during on-orbit running can be more accurately completed, and the reliability and accuracy of the space rotation product environment test are ensured. Meanwhile, the elastic sealing element 30 provides a flexible connection mode for the magnetic fluid sealing assembly and the vacuum environment simulation equipment, the connection is non-rigid, and the axial position of the connecting shaft can be adjusted smoothly.
The device comprises a magnetic fluid sealing assembly 20, an adjustable bracket 40, an elastic sealing element 30, a mounting base 50 and the like, wherein the magnetic fluid sealing assembly 20 is arranged on a vacuum environment simulation device 10, one end of a connecting shaft 22 stretches into the vacuum environment simulation device for transmitting the rotation characteristic of a test product, specifically, one end of the connecting shaft 22 stretches into the vacuum environment simulation device 10 and is connected with the test product through a coupler, the other end of the connecting shaft 22 is positioned outside a cabin of the vacuum environment simulation device 10 and is connected with a load simulation device such as a motor, an inertia disk and the like through the coupler, and the relative rotation characteristic of the test product is transmitted to the outside of the cabin of the vacuum environment simulation device 10 through the magnetic fluid sealing assembly 20;
and the magnetic fluid sealing assembly 20 is connected with the vacuum environment simulation device 10 through an elastic sealing member 30, so that a sealed cavity is formed between the magnetic fluid sealing assembly 20 and the vacuum environment simulation device 10, and the vacuum performance of the vacuum environment simulation device 10 is not damaged.
An adjustable bracket 40 is further arranged below the magnetic fluid sealing assembly 20, namely between the structure and the ground, the position of the magnetic fluid sealing assembly 20 is adjusted through the adjustable bracket 40, and high-precision translational adjustment in three directions and high-precision rotation adjustment of three axes are realized through the adjustable bracket 40, which are described in detail below. The magnetic fluid sealing assembly 20 is installed and supported by an adjustable bracket 40, the adjustable bracket 40 is fixed on a mounting base 50 by fastening screws, and the mounting base 50 is fixedly arranged on the ground of a laboratory near the vacuum environment simulation device 10.
Further, the elastic sealing member 30 is a bellows, one end of the bellows is in flange connection with one end of the assembly body 21, which is close to the vacuum environment simulation device 10, the other end of the bellows is in flange connection with the vacuum environment simulation device 10, and the connecting shaft 22 penetrates through the bellows and stretches into the vacuum environment simulation device 10.
In this embodiment, the magnetic fluid sealing assembly 20 and the vacuum environment simulation device 10 are connected through the bellows, one end of the specific bellows is connected to the vacuum environment simulation device 10, the other end of the bellows is connected to the assembly body 21 of the magnetic fluid sealing assembly 20 through flange connection, the two connecting flanges are connected and fixed through screws, a sealing ring is further arranged between the flanges for sealing, and fluororubber is preferably adopted as a sealing ring material. The connecting shaft 22 of the magnetic fluid sealing assembly 20 penetrates through the corrugated pipe and the outer wall of the vacuum environment simulation device 10, stretches into the device, and is connected with a test product through a coupler.
In this embodiment, the bellows is adopted to realize flexible connection between the vacuum environment simulation device 10 and the magnetic fluid sealing assembly 20, so that the influence of deformation of the vacuum environment simulation device 10 caused by atmospheric pressure on the accuracy of the connecting shaft 22 in a normal pressure state and a vacuumizing state can be effectively reduced, the influence of vibration of the vacuum pump set in the vacuum environment simulation device 10 on the accuracy of the shaft system can be effectively reduced, and meanwhile, the influence of machining deviation of the flange interface axis of the vacuum environment simulation device 10 on the accuracy of the shaft system can be effectively eliminated.
Further, the adjustable bracket 40 includes: the bracket body 41, the bracket body 41 is provided with an annular supporting ring, the annular supporting ring of the bracket body 41 is sleeved on the assembly body 21 and is fixedly connected with the assembly body 21,
a bracket mounting plate 42, wherein the bracket mounting plate 42 is arranged on the bracket body 41 for bearing the bracket body 41, a plurality of first direction adjusting devices 60 are arranged on the bracket mounting plate 42 for adjusting the angle of the bracket body 41 in a first direction,
the bracket bottom plate 43, the bracket bottom plate 43 is disposed between the bracket mounting plate 42 and the mounting base 50, and a plurality of second direction adjusting devices 70 are disposed on the bracket bottom plate 43 and are used for adjusting the angle of the bracket body 41 in a second direction, and the first direction is perpendicular to the second direction.
The above-mentioned magnetic fluid seal assembly 20 is supported and fixed by the adjustable bracket 40, the adjustable bracket 40 includes three parts, namely, a bracket body 41, a bracket mounting plate 42 and a bracket bottom plate 43 from top to bottom, wherein the bracket body 41 includes an annular supporting ring, the body of the magnetic fluid seal assembly 20 is supported and fixed by the annular supporting ring, the bracket body 41 is mounted on the bracket mounting plate 42, and the bracket mounting plate 42 is disposed on the bracket bottom plate 43 through a first direction adjusting device 60 disposed on the bracket mounting plate 42, and a second direction adjusting device 70 disposed on the bracket bottom plate 43 is disposed on the bracket bottom plate 43, specifically, in the following embodiment, it is preferable to set the first direction to be a direction perpendicular to the connecting shaft 22, and the second direction to be a direction horizontal to the connecting shaft 22.
The bracket body 41 has a planar structure, is installed perpendicular to a horizontal plane, and has an annular support ring at an upper end, and is connected with one end of the assembly body 21 of the magnetic fluid sealing assembly 20 through a flange and fixed through a fastening bolt. The bracket mounting plate 42 has a planar structure, is integrally combined with the bracket body 41 to form an inverted T-shaped structure, and has a rib plate structure, thereby increasing the structural strength of the whole combination of the bracket body 41 and the bracket mounting plate 42.
Further, the bracket mounting plate 42 is provided with a plurality of threaded holes,
the first direction adjusting device 60 includes a first adjusting bolt, the first adjusting bolt is disposed in the threaded hole, one end of the first adjusting bolt is abutted to the bracket bottom plate 43, and the other end of the first adjusting bolt extends out of the bracket mounting plate 42.
In this embodiment, the angle adjustment in the vertical direction is achieved by the first direction adjusting device 60 disposed on the support mounting plate 42, specifically, the threaded hole is disposed on the support mounting plate 42, the adjusting bolt is installed in the threaded hole, and is adjusted by rotating the adjusting bolt, the adjusting bolt passes through the threaded hole on the support mounting plate 42 and is propped down to the upper surface of the support bottom plate 43, and the support body 41 forms a set of multiple freedom degree kinematic pairs with the support bottom plate 43 under the support of multiple adjusting bolts. The adjustment bolts are rotated to extend different lengths from the bracket mounting plate 42 for corresponding adjustment.
Further, four first direction adjustment devices 60 are disposed on the bracket mounting plate 42, and the first direction adjustment devices 60 are distributed in an array.
In this embodiment, four first direction adjusting devices 60 are preferably disposed, the cross section of the bracket mounting plate 42 is in a rectangular structure, the four first direction adjusting devices 60 are distributed in an array and disposed at four corners of the bracket mounting plate 42, and the distances between each adjusting bolt and the edge of the bracket mounting plate 42 are equal, so that an up-down and left-right symmetrical structure is formed, and quantization and use of the first direction adjusting devices 60 are facilitated.
Further, the second direction adjusting means 70 comprises an adjusting bolt and a fastening nut,
the side wall of the bracket bottom plate 43 is provided with a plurality of mounting holes, each mounting hole is fixedly provided with a fastening nut at an opening, and the adjusting bolt is installed in the mounting hole through the fastening nut and used for adjusting the length of the adjusting bolt extending out of the bracket bottom plate 43 to adjust in the second direction.
The second direction adjusting device 70 is further arranged in the embodiment, the horizontal direction adjustment is achieved through the second direction adjusting device 70, the second direction adjusting device 70 is arranged on the support base plate 43, the second adjusting bolt and the fastening nut are arranged, the fastening nut is fixed on the support base plate 43, the mounting hole is formed in the position where the fastening nut is arranged, the second adjusting bolt is mounted in the mounting hole through the fastening nut, and the length of the second adjusting bolt extending out of the mounting hole is adjusted correspondingly.
Further, the cross section of the bracket bottom plate 43 is rectangular, two second direction adjusting devices 70 are disposed on each side wall of the bracket bottom plate 43, and the two second direction adjusting devices 70 are disposed near the end portions of the side walls.
The second direction adjustment means 70 of the present embodiment is preferably provided on the side wall of the bracket base 43, that is, eight positions as shown in fig. 2, and since the bracket base 43 has a large area, it is preferable to provide two second direction adjustment means 70 on each side, and the relative position of the bracket body 41 on the bracket base 43 is changed by adjusting the length housings of the second adjustment bolts of the eight second direction adjustment means 70.
The device provided in the above embodiment improves the coaxiality installation precision of the shaft system of the test system by conveniently and accurately adjusting the space position of the vacuum dynamic seal shaft line, reduces multiple system errors in the vacuum thermal test process of the space rotating part, rapidly and accurately realizes product rotation characteristic transfer and load simulation, and further improves the working state test level of the vacuum thermal test of the space rotating product.
Further, locking devices 80 are further included, and the locking devices 80 are disposed in a one-to-one correspondence with the first direction adjusting devices 60, and are used for fixing the bracket base plate 43 and the bracket mounting plate 42.
In this embodiment, the locking device 80 is further disposed on the support mounting plate 42, so that the support mounting plate 42 and the support bottom plate 43 are fixed after adjustment, and the displacement of the connecting shaft 22 of the magnetic fluid sealing assembly 20 is avoided, so that the data of the whole test are affected.
Further, the locking device 80 includes a locking bolt and a locking nut,
the support bottom plate 43 is provided with a counter bore, the support mounting plate 42 is provided with a through hole corresponding to the counter bore, the locking bolt is arranged in the counter bore of the support bottom plate 43 and penetrates through the through hole, and the locking nut is matched with the locking bolt and arranged on one surface of the support mounting plate 42 away from the support bottom plate 43.
Specifically, a counter bore is formed in the support base plate 43, a through hole is formed in the support mounting plate 42 at a corresponding position, a locking bolt upwards penetrates through the through hole in the support mounting plate 42 from the counter bore in the support base plate 43, and after the adjustment of the adjusting device is completed, the locking bolt is locked through a locking nut above the support mounting plate 42 to prevent displacement.
In the above structure, the bracket mounting plate 42, the bracket bottom plate 43 and the bracket body 41 form a pair of multi-degree-of-freedom kinematic pairs, and the horizontal adjustment is realized through the second direction adjusting device 70, and the vertical adjustment is realized through the first direction adjusting device 60, so that the high-precision translational adjustment in 3 directions and the high-precision rotational adjustment in 3 axes are realized; the second direction adjusting device 70 is a horizontal adjusting device, is arranged around the bracket bottom plate 43, and completes translational adjustment and locking of the bracket on the bracket bottom plate 43 along 2 horizontal axis directions and rotational adjustment and locking along 1 vertical axis direction by changing the elongation of the adjusting bolt; the first direction adjusting device 60 is a vertical adjusting device, and after four corners of the horizontal mounting surface of the bracket are connected with the bracket through threads, the bracket is supported on the bracket bottom plate 43, and translational adjustment of the bracket on the bracket bottom plate 43 along the 1 vertical axis direction and rotational adjustment along the 2 horizontal axis directions are completed by changing the elongation of the adjusting bolt.
Further, the first direction adjusting device 60 and the second direction adjusting device 70 are both configured as micrometer.
In this embodiment, the first adjusting bolt and the second adjusting bolt preferably adopt micrometer structures, so as to realize the visualization of the adjusting data.
Further, in the present embodiment, the connecting shaft 22 of the magnetic fluid seal assembly 20 is made of 420 stainless steel, which is a magnetic conductive material, and other structures may be 304 stainless steel.
In addition, corresponding groove structures can be arranged on the installation base 50, so that the installation of the structures such as the adjustable bracket 40 on the installation base 50 is facilitated, the installation base 50 is fixed on the ground through foundation bolts, and the stability of the whole device is improved.
In this embodiment, by changing the elongation of the second adjusting bolts on the eight sets of second direction adjusting devices 70, translational adjustment of the bracket along two horizontal axes and rotational adjustment along one vertical axis can be achieved, and the adjustment accuracy can reach 0.001mm. After the horizontal adjustment is completed, the horizontal position of the bracket body 41 can be locked under the clamping of the adjusting bolts of the eight sets of second direction adjusting devices 70.
The rotation adjustment of the bracket along two horizontal axes and the translation adjustment along a vertical axis can be realized by changing the elongation of the first adjusting bolts on the four groups of first direction adjusting devices 60, and the adjustment precision can reach 0.001mm. After the vertical adjustment is completed, the nuts of the four sets of locking devices 80 are locked, and the vertical position of the bracket body 41 can be locked under the relative action of the four sets of vertical locking devices 80 and the four sets of first direction adjusting devices 60.
The device provided by the invention can realize the maximum transmission torque of 1000Nm, the maximum rotation speed of 500r/min and the leakage rate of less than 1 multiplied by 10 -12 Pa.m 3 The adjustment accuracy is 0.001mm, and the vacuum degree can be matched with the vacuum degree to be better than 6.65X10 -3 The vacuum environment simulation apparatus 10 operates at Pa and temperature ±150℃.
The device provided by the embodiment has the advantages of simple structure, easy installation, no need of excessive transformation on the existing vacuum environment simulation equipment 10, convenient implementation and installation by utilizing the existing flange interface of the vacuum environment simulation equipment 10; the adjustment degree of freedom is large, the adjustment precision is high, the fine adjustment of 3 translational degrees of freedom and 3 rotational degrees of freedom can be realized through a horizontal adjustment device and a vertical adjustment device, and the adjustment precision is better than 0.001mm; the system error is effectively reduced, the elastic sealing piece is used as a flexible link, the influence of deformation generated by atmospheric pressure on the shafting precision in the normal pressure state and the vacuumizing state of the vacuum environment simulation equipment 10 can be effectively reduced, the influence of vibration of a vacuum pump set of the vacuum environment simulation equipment 10 on the shafting precision is effectively reduced, and meanwhile, the influence of machining deviation of a flange interface axis of the vacuum environment simulation equipment 10 on the shafting precision is effectively eliminated.
It is to be understood that the above references to the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., are for convenience in describing the present invention and simplifying the description only, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention; the orientation word "inner and outer" refers to inner and outer relative to the contour of the respective component itself. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
Spatially relative terms, such as "above … …," "above … …," "upper surface at … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial location relative to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "above" or "over" other devices or structures would then be oriented "below" or "beneath" the other devices or structures. Thus, the exemplary term "above … …" may include both orientations of "above … …" and "below … …". The device may also be oriented 90 degrees or at other orientations and the spatially relative descriptors used herein interpreted accordingly.
The foregoing description is only of the preferred embodiments of the present application and is presented as a description of the principles of the technology being utilized. It will be appreciated by persons skilled in the art that the scope of the invention referred to in this application is not limited to the specific combinations of features described above, but it is intended to cover other embodiments in which any combination of features described above or equivalents thereof is possible without departing from the spirit of the invention. Such as the above-described features and technical features having similar functions (but not limited to) disclosed in the present application are replaced with each other.
Claims (10)
1. A vacuum dynamic seal adjustment device for a vacuum thermal test, comprising:
the magnetic fluid sealing assembly comprises an assembly body and a connecting shaft arranged on the assembly body, wherein a first end of the connecting shaft is used for extending into vacuum environment simulation equipment and connecting with a test product, a second end of the connecting shaft is used for connecting with load equipment,
an elastic sealing element, which is arranged between the magnetic fluid sealing component and the vacuum environment simulation equipment and is used for providing flexible connection for the magnetic fluid sealing component and the vacuum environment simulation equipment,
an adjustable bracket mounted on the magnetic fluid seal assembly for adjusting the position of the magnetic fluid seal assembly,
the adjustable support is arranged on the installation base, and the installation base is used for being placed on the ground to support the adjustable support.
2. The dynamic vacuum seal adjusting device for a vacuum thermal test according to claim 1, wherein the elastic seal member is a bellows, one end of the bellows is connected with one end of the assembly body close to the vacuum environment simulation equipment in a flange manner, the other end of the bellows is connected with the vacuum environment simulation equipment in a flange manner, and the connecting shaft penetrates through the bellows and stretches into the vacuum environment simulation equipment.
3. The dynamic vacuum seal adjuster for a thermal vacuum test of claim 1, wherein the adjustable bracket comprises: the bracket body is provided with an annular supporting ring, the annular supporting ring of the bracket body is sleeved on the assembly body and is fixedly connected with the assembly body,
the bracket mounting plate is arranged on the mounting base bracket body and bears the bracket body, a plurality of first direction adjusting devices are arranged on the bracket mounting plate and are used for adjusting the angle of the bracket body in a first direction,
the support bottom plate, the support bottom plate sets up the support mounting panel with between the installation base, be equipped with a plurality of second direction adjusting device on the support bottom plate, be used for adjusting in the second direction the angle of support body, first direction with the second direction sets up perpendicularly.
4. A dynamic vacuum seal adjuster for a vacuum thermal test according to claim 3, wherein the bracket mounting plate is provided with a plurality of screw holes,
the first direction adjusting device comprises a first adjusting bolt, the first adjusting bolt is arranged in the threaded hole, one end of the first adjusting bolt is in butt joint with the support base plate, and the other end of the first adjusting bolt extends out of the support mounting plate.
5. The dynamic vacuum seal adjuster for vacuum thermal test according to claim 4, wherein four of the first direction adjusters are provided on the bracket mounting plate, and the first direction adjusters are distributed in an array.
6. A dynamic vacuum seal adjuster for a vacuum thermal test according to claim 3, wherein the second direction adjuster comprises a second adjusting bolt and a fastening nut,
the support bottom plate is characterized in that a plurality of mounting holes are formed in the side wall of the support bottom plate, the fastening nuts are fixedly arranged at the openings of the mounting holes, and the second adjusting bolts are installed in the mounting holes through the fastening nuts and used for adjusting the length of the second adjusting bolts extending out of the support bottom plate to adjust in the second direction.
7. The dynamic vacuum seal adjuster for vacuum thermal test according to claim 6, wherein the cross section of the bracket base plate is rectangular, two second direction adjusters are provided on each side wall of the bracket base plate, and the two second direction adjusters are provided near the ends of the side walls.
8. The dynamic vacuum seal adjuster for vacuum thermal test according to claim 6, further comprising a locking device provided in one-to-one correspondence with the first direction adjusting device for fixing the bracket base plate and the bracket mounting plate.
9. The dynamic vacuum seal adjuster for vacuum thermal test according to claim 8, wherein the locking means comprises a locking bolt and a locking nut,
the support bottom plate is provided with a counter bore, the support mounting plate is provided with a through hole corresponding to the counter bore, the locking bolt is arranged in the counter bore of the support bottom plate and penetrates through the through hole, and the locking nut is matched with the locking bolt and arranged on one surface of the support mounting plate away from the support bottom plate.
10. The dynamic vacuum seal adjuster for vacuum thermal test according to claim 1, wherein the first direction adjuster and the second direction adjuster each adopt a micrometer structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311546877.6A CN117570210A (en) | 2023-11-20 | 2023-11-20 | Vacuum dynamic seal adjusting device for vacuum thermal test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202311546877.6A CN117570210A (en) | 2023-11-20 | 2023-11-20 | Vacuum dynamic seal adjusting device for vacuum thermal test |
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| CN117570210A true CN117570210A (en) | 2024-02-20 |
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| CN202311546877.6A Pending CN117570210A (en) | 2023-11-20 | 2023-11-20 | Vacuum dynamic seal adjusting device for vacuum thermal test |
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| CN (1) | CN117570210A (en) |
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