CN106679898A - Device used for testing high-speed revolution clearance seal performance - Google Patents

Device used for testing high-speed revolution clearance seal performance Download PDF

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Publication number
CN106679898A
CN106679898A CN201611258633.8A CN201611258633A CN106679898A CN 106679898 A CN106679898 A CN 106679898A CN 201611258633 A CN201611258633 A CN 201611258633A CN 106679898 A CN106679898 A CN 106679898A
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hole
screw
rotating shaft
concentric
component
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CN201611258633.8A
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CN106679898B (en
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林书豪
陈鹏
余陵
蔡文祥
范宗敏
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Nanjing University of Science and Technology
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Nanjing University of Science and Technology
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors

Abstract

The invention discloses a device used for testing high-speed revolution clearance seal performance. The device includes a screw rod adjusting assembly, a static pressure cavity assembly, a concentric frame assembly and a high speed revolution assembly. The concentric frame assembly is disposed at the bottom of the whole device and serves as a support base of the whole device. The static pressure cavity assembly and the high speed revolution assembly are both mounted on a concentric shaft sleeve of the concentric frame assembly. The static pressure cavity assembly is disposed between the screw rod adjusting assembly and the high speed revolution assembly. One end of the static pressure cavity assembly is connected with a screw rod adjusting assembly through a connection sleeve while the other end of the static pressure cavity assembly is connected with the high speed revolution assembly through a round nut. The screw rod adjusting assembly is fixed through a screw rod support base. The screw rod adjusting assembly, the static pressure cavity assembly and the high speed revolution assembly and the concentric shaft sleeve are disposed on the same axis. According to the invention, in a comparatively large revolution speed range and under comparatively high pressure, adjustment of seal parameters such as seal pressure, clearance seal contact length, sealing clearance size and sealing medium adhesion can be made and testing of seal performance in different parameter conditions can be achieved.

Description

A kind of device for testing high speed rotary gap sealing property
Technical field
The invention belongs to technical field of sealing technology, particularly a kind of device for testing high speed rotary gap sealing property.
Background technology
In recent years, with the development of science and technology, in field of sealing technology, clearance seal obtains people and more and more widely grinds Study carefully.Clearance seal is the non-contact seal that a kind of circumferential gap sealing and axial end sealing combine, by relative motion Minim gap between part mating surface suppresses leakage, has benefited from the progress of manufacturing technology, and at present, seal clearance can be controlled In a few micrometers rank, clearance seal just progressively from theoretical model is converted to actual product.Clearance seal can be used for liquids and gases Sealing, the pressure reduction of more than 100MPa can be born, do not affected by sliding speed and temperature in theory.In aircraft industry, surpass High pressure compressor, centrifuge, steam turbine, nuclear power generating equipment, petrochemical industry container etc. are high-accuracy, high standard industry, this kind of sealing side Formula is used widely.But, both at home and abroad for the research of clearance seal performance is confined to theoretical derivation and numerical simulation mostly Aspect, refers to rarely having using equipment research clearance seal aspect of performance literature various in kind.
At present, for the test device of clearance seal performance, Yang Xiufeng. hydraulic pressure annulus leakage characteristics it is theoretical and real Testing research [D]. the Central China University of Science and Technology, 2012. have delivered a set of with regard to hydraulic pressure annulus leak test system, are connected using crank Linkage drives sealing column to move back and forth in sealing intracavity, but is not directed to the axial rotation motion of sealing column;Li Jian, what Wen Jin, any forces, etc. the discussion [J] of microgap sealing applications several key issues in rotating mechanism. hydraulics pneumatics and seals, 2002(3):43-44. has delivered a set of sealing applications sealed to microgap with regard to experimental provision in several passes of rotating mechanism Key problem is inquired into, but experimental provision cannot be adjusted to sealing property parameter, and the range of speeds of research is less;For The test device of rotary gap sealing property under the conditions of for studying high rotating speed, high pressure, can particularly adjust every sealing The special purpose device of performance parameter, still in space state.
The content of the invention
Technical problem solved by the invention is to provide a kind of device for testing high speed rotary gap sealing property, It is adjusted carrying out the clearance seal of high speed rotation the test of performance for sealing property parameter.
The technical solution for realizing the object of the invention is:
A kind of device for testing clearance seal performance, including screw rod adjustment component, static pressure chamber component, concentric frame component With high-speed rotation component;The concentric frame component is located at the bottom of whole device, used as the support pedestal of whole device;It is described quiet Pressure chamber component, high-speed rotation component are installed on the concentric shaft sleeve of concentric frame component, and static pressure chamber component is located at screw rod Between adjustment component and high-speed rotation component, static pressure chamber component one end adjusts component and is connected by adapter sleeve and screw rod, static pressure chamber The component other end is connected by round nut with high-speed rotation component;The screw rod adjustment component is fixed by spiro rod support;It is described Screw rod adjustment component, static pressure chamber component and high-speed rotation component are respectively positioned on same axis with the concentric shaft sleeve of concentric frame component On.
The present invention compared with prior art, its remarkable advantage:
(1) present invention can be by gluing to seal pressure, clearance seal contact length, seal clearance size, sealing medium Degree realizes the regulation of seal parameters, obtains the test to sealing property under the conditions of different parameters;
(2) test device (0~15000rpm) can be accurately controlled rotating speed in the larger range of speeds;
(3) test device can be tested in elevated pressures situation (reaching as high as 10MPa).
The present invention is described in further detail below in conjunction with the accompanying drawings.
Description of the drawings
Fig. 1 is the present invention for testing the structural representation of the device of clearance seal performance.
Fig. 2 is A-A cross-sectional views in Fig. 1.
Fig. 3 is concentric shafts tube-in-tube structure schematic diagram.
Fig. 4 is follower belt axle construction schematic diagram.
Fig. 5 be different sealing gap condition under leak rate with the speed of mainshaft change curve.
Fig. 6 is change curve of the leak rate with sealing spindle nose diameter.
Specific embodiment
Illustrate with reference to the specific embodiment of Fig. 1-6 couple of present invention.
With reference to Fig. 1, a kind of device for testing clearance seal performance of the present invention, including screw rod adjustment component, static pressure Chamber component, concentric frame component and high-speed rotation component;The concentric frame component is located at the bottom of whole device, used as whole device Support pedestal;Static pressure chamber component, high-speed rotation component are installed on the concentric shaft sleeve 14 of concentric frame component, described Static pressure chamber component is located at screw rod and adjusts between component and high-speed rotation component, and static pressure chamber component is used to store sealing medium, static pressure Chamber component one end adjusts component and is connected by adapter sleeve 6 and screw rod, and the static pressure chamber component other end is turned by round nut 13 with high speed Dynamic component is connected, and the high-speed rotation component is used for measurement gap sealing property;The screw rod adjustment component is used to adjust gap Length in sealing contact, screw rod adjustment component is fixed by spiro rod support 2;The screw rod adjustment component, static pressure chamber component and high speed Runner assembly is respectively positioned on same axis with the concentric shaft sleeve 14 of concentric frame component.
The screw rod adjustment component includes rocking bar 1, spiro rod support 2, screw rod 3, adapter sleeve 6, the first screw 5, the second screw 7 With a pair first rolling bearings 4;The screw rod 3 be cylindrical rod-like structure, it is cylindrical to be provided with screw thread, for the phase of spiro rod support 2 Even;The spiro rod support 2 is inverted T-type structure, and bottom offers counter sink for fixing, and upper end is provided with screwed hole, for screw rod 3 Screw, spiro rod support 2 be located between rocking bar 1 and adapter sleeve 6;The one end of the screw rod 3 is provided with the logical of connection rocking bar 1 Hole, rocking bar 1 is arranged on the through hole on screw rod 2;The rocking bar 1 is cylindrical rod-like structure, the axis of rocking bar 1 and the axle of screw rod 3 Line is mutually perpendicular to;A pair first rolling bearings 4 are connected with the other end of the screw rod 3 is cylindrical, the axially position of screw rod 3 is realized; Screwed hole is provided with the middle of one end end face for connecting the first rolling bearing 4, the first screw 5 is installed, vertical first on screwed hole On the axis direction of screw 5, adapter sleeve is respectively provided with second screw 7 about 6, and upper and lower second screw 7 is relative to be tightened for even Connect the first screw 5;The adapter sleeve 6 is circular cylindrical cavity structure, and the cylindrical screwed hole for being respectively provided with second screw 7 up and down is interior Circle is provided with circular bosses, for the positioning of the first rolling bearing 4;The adapter sleeve 6 is by two the second screws 7 and static pressure chamber group The end cover 8 of part is connected;By the rocking bar 1 for rotating screw rod 3 can be made to move back and forth with dynamic and static pressure chamber component.
With reference to Fig. 1, Fig. 2, static pressure chamber component includes that end cover 8, pad 9, plunger 10, annular seal space 11 and pressure are passed Sensor 17;The end cover 8 is circular flange structure, and the inner circle of cylindrical and adapter sleeve 6 of one end is connected by the second screw 7, The other end is cylindrical to be connected by screw thread with the inner circle of annular seal space 11;The annular seal space 11 is stepped cylinder cavity body structure, in cavity Portion is provided with ladder circular hole, and with the connection end of end cover 8 step is provided with, for being put into platform in end cover 8 and the cavity of annular seal space 11 Pad 9 is set between rank to ensure air-tightness;The upper end of annular seal space 11 is provided with through hole, for installing plunger 10;Parallel to screw rod On the bottom surface direction of bearing 2, the radially opposite sides of annular seal space 11 respectively have a through hole, and a through hole is used for the import of sealing medium, sealing Medium is entered by high-pressure air pipe, and another through hole is used to install pressure transducer 17 and gasket seal 18.Annular seal space 11 is cylindrical It is connected with the concentric shaft sleeve 14 of concentric frame component, the other end in the cavity of annular seal space 11 is by nut 13 and high-speed rotation component High speed rotating shaft sleeve 16 be connected.
With reference to Fig. 1, Fig. 4, the high-speed rotation component includes high speed rotating shaft sleeve 16, pressure transducer 17, high speed rotating shaft Spindle nose 19, follower belt axle 23, a pair second rolling bearings 24, bearing (ball) cover 25 and anti-turn screw pads 26;The high speed turns The stairstepping column structure of shaft sleeve 16, connection annular seal space 11 one end outside diameter is less than outside the one end of connection high speed rotating shaft spindle nose 19 Footpath;The connection annular seal space 11 of high speed rotating shaft sleeve 16 one end is cylindrical to be provided with screw thread, for connecting two nuts 13, high speed rotating shaft set Cylinder 16 is provided with the end of thread and stretches in the cavity of annular seal space 11, is connected with annular seal space 11 by two nuts 13;High speed rotating shaft sleeve 16 Axis is provided with stairstepping through hole, and near the side through-hole diameter of annular seal space 11 the side through-hole diameter of high speed rotating shaft spindle nose 19 is less than, Through hole is used for the passage of sealing medium;The cylindrical upper end of high speed rotating shaft sleeve 16 is provided with through hole, for installing pressure transducer 17;It is high Through hole on the other end axis of fast shaft sleeve 16 contacts with each other with high speed rotating shaft spindle nose 19, through hole and high speed rotating shaft spindle nose 19 it Between form seal clearance;The high speed rotating shaft spindle nose 19 be stepped cylindrical structure, the circular shaft of the one end of high speed rotating shaft spindle nose 19 with The through hole minor diameter fit of high speed rotating shaft sleeve 16 forms seal clearance;The other end of high speed rotating shaft spindle nose 19 by the 3rd screw install from Intracavity in dynamic belt shaft 23;The follower belt axle 23 is stepped cylinder cavity body structure, and one end circular hole installs high speed rotating shaft axle 19, the other end passes through the mode connects for screw high speed rotating shaft spindle nose 19 of anti-turn screw pad 26 and the 3rd;The anti-turn screw pad 26 For notch cuttype circular ring structure, one end contacts installed in intracavity in follower belt axle 23, the other end with the 3rd screw;The driven skin The two ends of tape spool 23 are arranged in concentric shaft sleeve 14 by the second rolling bearing 24;Follower belt axle 23 installs anti-turn screw pad One end of piece 26 is provided with bearing (ball) cover 25, and bearing (ball) cover 25 is used for the fixation of follower belt axle 23;Positioned at two second axis of rolling Hold between 24, the cylindrical driving contact part for being provided with drum type structure of follower belt axle 23, and one is provided with drum type structure two ends Circle limited step, can effectively prevent belt from shifted laterally is produced during motion and is come off;Follower belt axle 23 is cylindrical Counting tooth is provided with, for tachogenerator 21 rotating speed is measured.
In some embodiments, the high speed rotating shaft spindle nose 19 of multiple different-diameter specifications is provided with, by screw arbor assembly, is made After high speed rotating shaft sleeve 16 is kept completely separate with high speed rotating shaft spindle nose 19, you can change the high speed rotating shaft spindle nose 19 of other diameters, reach To the function of adjustment seal clearance size.
In other embodiment, the high speed rotating shaft sleeve 16 of multiple different inner diameters specifications is provided with, by changing it The high speed rotating shaft sleeve 16 of his internal diameter, reaches the function of adjustment seal clearance size.
With reference to Fig. 1, Fig. 3, the concentric frame component includes tachogenerator 21, velocity measuring sensor bracket 22, two with one heart Axle sleeve tube stent 12 and a concentric shaft sleeve 14;The concentric shafts bush support 12 be inverted T-type structure, two concentric shaft sleeves The bottom of support 12 is equipped with counter sink for the fixation of whole test device, and two upper ends of concentric shafts bush support 12 are equipped with together The installing hole of spindle collet 14;The installing hole of two concentric shafts bush supports 12 is coaxial;The concentric shaft sleeve 14 is notch cuttype There is notch cuttype circular hole cylindrical cavity structure, inside, and one end is used to install the annular seal space 11 of static pressure chamber component, and the other end is used to install Second rolling bearing 24;The cylindrical installing hole for being provided with velocity measuring sensor bracket 22 of the concentric shaft sleeve 14, it is described to test the speed Sensor stand 22 is circular flange structure, and inside is provided with through hole, for tachogenerator 21 to be propped up installed in tachogenerator On frame 22;The tachogenerator 21 is located at the upper end of follower belt axle 23, and tachogenerator 21 is by reading follower belt axle 23 The quantity that rotating speed tooth passes through in unit interval is measuring the rotating speed of rotating shaft.Top fluting in the middle of the concentric shaft sleeve 14, just In the installation and the replacing of high-speed rotation component of pressure transducer 17;With one heart frame component as other assemblies installing matrix, Important supporting role is played in whole device.
Before the test begins, first have to determine the parameters for being test for sealing structure, sealing spindle nose diameter and sealing Gap length is realized by the high speed rotating shaft sleeve 16 of the high speed rotating shaft spindle nose 17 and different inner diameters of changing different-diameter, by rotation Turning rocking bar 1 makes high speed rotating shaft sleeve 16 move with static pressure chamber component, realizes the adjustment of clearance seal contact length.Determine After these three parameters, sealing medium selected in advance is injected into static pressure chamber 9 by sealing medium import, can be according to actual needs Select the sealing medium of different viscosities;After medium to be sealed is filled, the plunger 8 at top is tightened.Open external pressure source and adjust Section pressure, external pressure source produces compressing by sealing medium import to the sealing medium in static pressure chamber 9, and sealing medium is subject to squeeze The annular gap internal leakage that pressure effect can be formed from high speed rotating shaft spindle nose 17 and high speed rotating shaft sleeve 16.Outside device for opening Power source simultaneously adjusts power source output speed, and power source drives follower belt moving axis 21 to rotate by V belt translation, that is, allow between annular Gap sealing generates relative rotation, and the tachogenerator 19 at the top of concentric carriage assembly in real time can work as on follower belt axle Front rotating speed is displayed on tachymeter, the speed of mainshaft is adjusted to specified rotating speed by observing tachymeter reading.Confirm leakage shape After state is stable, container is placed on into the lower section of leakage hole, by the leakage rate in the unit interval, draws leakage rate.Again Change the speed of mainshaft, seal pressure, sealed diameter, seal length, seal clearance height, sealing medium viscosity, one or many Individual parameter can measure the sealing property curve of annular gap sealing under different parameters.
Specific embodiment 1:
With reference to Fig. 5, when being embodied as:Seal pressure 10MPa, clearance seal contact length 20mm seals spindle nose diameter 8mm, sealing medium dynamic viscosity 0.111Pas, study gap be 20 μm, 25 μm, 30 μm, 35 μm, 40 μm when leak rate [Leakage rate (gram g/s per second)] is with the change of rotating speed [Ratational speed (rpm r/min)];In setting Speed conditions under, the leak rate of sealing medium is measured by measuring the amount of leakage of unit interval sealing medium, revealed Speed with rotating speed change curve.
Specific embodiment 2:
With reference to Fig. 6, when being embodied as:Seal pressure 10MPa, working speed is 12000rpm, clearance seal contact length 20mm, sealing medium dynamic viscosity 0.111Pas, seal clearance is 30 μm, research sealing spindle nose is a diameter of 6,8,10,12, Leakage rate during 14mm is with the change for sealing spindle nose diameter [Seal diameter (millimeter mm)].It is straight in the sealing spindle nose of setting Under footpath, the leak rate of sealing medium is measured by measuring the amount of leakage of unit interval sealing medium, obtain leakage rate with height The curve of the fast diameter change of rotating shaft spindle nose 19 (obtaining different sealing gap), the change for obtaining leakage rate with seal clearance is bent Line.

Claims (9)

1. a kind of device for testing clearance seal performance, it is characterised in that:Including screw rod adjustment component, static pressure chamber component, Concentric frame component and high-speed rotation component;The concentric frame component is located at the bottom of whole device, used as the support of whole device Pedestal;Static pressure chamber component, high-speed rotation component are installed on the concentric shaft sleeve (14) of concentric frame component, the static pressure Chamber component is located at screw rod and adjusts between component and high-speed rotation component, and static pressure chamber component one end is adjusted by adapter sleeve (6) with screw rod Whole group part is connected, and the static pressure chamber component other end is connected by round nut (13) with high-speed rotation component;The screw rod adjusts component It is fixed by spiro rod support (2).
2. a kind of device for testing clearance seal performance as claimed in claim 1, it is characterised in that the screw rod adjustment Component, static pressure chamber component and high-speed rotation component are respectively positioned on same axis with the concentric shaft sleeve (14) of concentric frame component.
3. a kind of device for testing clearance seal performance as claimed in claim 1, it is characterised in that the screw rod adjustment Component includes rocking bar (1), spiro rod support (2), screw rod (3), adapter sleeve (6), the first screw (5), the second screw (7) and a pair the One rolling bearing (4);The screw rod (3) is cylindrical rod-like structure, cylindrical to be provided with screw thread, for being connected with spiro rod support (2); The spiro rod support (2) is inverted T-type structure, and bottom offers counter sink for fixing, and upper end is provided with screwed hole, for screw rod (3) screw, spiro rod support (2) is between rocking bar (1) and adapter sleeve (6);Described screw rod (3) one end is provided with connection The through hole of rocking bar (1), through hole of the rocking bar (1) on screw rod (2);The rocking bar (1) is cylindrical rod-like structure, rocking bar (1) axis is mutually perpendicular to the axis of screw rod (3);A pair first axis of rolling are connected with screw rod (3) other end is cylindrical (4) are held, the axially position of screw rod (3) is realized;Screwed hole, screw thread are provided with the middle of one end end face for connecting the first rolling bearing (4) First screw (5) is installed, on the axis direction of vertical first screw (5), adapter sleeve (6) is respectively provided with up and down one on hole Two screws (7), upper and lower second screw (7) is relative to tighten for connecting the first screw (5);The adapter sleeve (6) is cylindrical cavity Body structure, the cylindrical screwed hole for being respectively provided with second screw (7) up and down, inner circle is provided with circular bosses, for the first rolling bearing (4) positioning;The adapter sleeve (6) is connected by two the second screws (7) with the end cover (8) of static pressure chamber component;Pass through The rocking bar (1) of rotation moves back and forth can screw rod (3) band dynamic and static pressure chamber component.
4. a kind of device for testing clearance seal performance as claimed in claim 1, it is characterised in that static pressure chamber group Part includes end cover (8), pad (9), plunger (10), annular seal space (11) and pressure transducer (17);The end cover (8) For circular flange structure, cylindrical and adapter sleeve (6) inner circle of one end is connected by the second screw (7), and the other end is cylindrical by spiral shell Stricture of vagina is connected with annular seal space (11) inner circle;The annular seal space (11) is stepped cylinder cavity body structure, and inside cavity is provided with ladder circle Hole, with end cover (8) connection end step is provided with, for being put between step in end cover (8) and annular seal space (11) cavity Arrange pad (9) to ensure air-tightness;Annular seal space (11) upper end is provided with through hole, for installing plunger (10);Parallel to screw rod On bearing (2) bottom surface direction, annular seal space (11) radially opposite sides respectively have a through hole, and a through hole is used for the import of sealing medium, Sealing medium is entered by high-pressure air pipe, and another through hole is used to install pressure transducer (17) and gasket seal (18);Sealing Chamber (11) is cylindrical to be connected with the concentric shaft sleeve (14) of concentric frame component, and the other end in annular seal space (11) cavity passes through nut (13) it is connected with the high speed rotating shaft sleeve (16) of high-speed rotation component.
5. a kind of device for testing clearance seal performance as claimed in claim 1, it is characterised in that the high-speed rotation Component include high speed rotating shaft sleeve (16), pressure transducer (17), high speed rotating shaft spindle nose (19), follower belt axle (23), a pair Second rolling bearing (24), bearing (ball) cover (25) and anti-turn screw pad (26);High speed rotating shaft sleeve (16) the stairstepping circle Rod structure, connection annular seal space (11) one end outside diameter is less than connection high speed rotating shaft spindle nose (19) one end external diameter;High speed rotating shaft set Annular seal space (11) one end is cylindrical is provided with screw thread for cylinder (16) connection, for connecting two nuts (13), high speed rotating shaft sleeve (16) It is provided with the end of thread to stretch in annular seal space (11) cavity, is connected with annular seal space (11) by two nuts (13);High speed rotating shaft sleeve (16) axis is provided with stairstepping through hole, logical less than high speed rotating shaft spindle nose (19) side near annular seal space (11) side through-hole diameter Bore dia, through hole is used for the passage of sealing medium;The cylindrical upper end of high speed rotating shaft sleeve (16) is provided with through hole, passes for installing pressure Sensor (17);Through hole on high speed rotating shaft sleeve (16) other end axis contacts with each other with high speed rotating shaft spindle nose (19), through hole with High speed rotating shaft spindle nose forms seal clearance between (19);The high speed rotating shaft spindle nose (19) is stepped cylindrical structure, is turned at a high speed The circular shaft of axle spindle nose (19) one end forms seal clearance with high speed rotating shaft sleeve (16) through hole minor diameter fit;High speed rotating shaft spindle nose (19) other end installs the interior intracavity of follower belt axle (23) by the 3rd screw;The follower belt axle (23) is stepped cylinder Cavity body structure, one end circular hole installs high speed rotating shaft spindle nose (19), and the other end is connected by anti-turn screw pad (26) with the 3rd screw Connect high speed rotating shaft spindle nose (19);The anti-turn screw pad (26) is notch cuttype circular ring structure, and one end is arranged on follower belt axle (23) interior intracavity, the other end is contacted with the 3rd screw;The two ends of the follower belt axle (23) pass through the second rolling bearing (24) In concentric shaft sleeve (14);Follower belt axle (23) installs one end of anti-turn screw pad (26) and is provided with bearing (ball) cover (25), bearing (ball) cover (25) for follower belt axle (23) fixation;Between two the second rolling bearings (24), driven skin The cylindrical driving contact part for being provided with drum type structure of tape spool (23), and a circle limited step is provided with drum type structure two ends, use In preventing belt from shifted laterally is produced during motion and come off;Follower belt axle (23) is cylindrical to be provided with counting tooth, uses Rotating speed is measured in tachogenerator (21).
6. a kind of device for testing clearance seal performance as claimed in claim 5, it is characterised in that the high speed rotating shaft Spindle nose (19) is provided with the specification of multiple different-diameters.
7. a kind of device for testing clearance seal performance as claimed in claim 5, it is characterised in that the high speed rotating shaft Sleeve (16) is provided with the specification of multiple different inner diameters.
8. a kind of device for testing clearance seal performance as claimed in claim 1, it is characterised in that the concentric frame group Part includes tachogenerator (21), velocity measuring sensor bracket (22), two concentric shafts bush supports (12) and a concentric axle sleeve Cylinder (14);The concentric shafts bush support (12) is inverted T-type structure, and two concentric shafts bush support (12) bottoms are equipped with countersunk head Hole is used for the fixation of whole test device, and two concentric shafts bush support (12) upper ends are equipped with the installation of concentric shaft sleeve (14) Hole;The installing hole of two concentric shafts bush supports (12) is coaxial;The concentric shaft sleeve (14) is stepped cylinder cavity body structure, There is notch cuttype circular hole inside, and one end is used to install the annular seal space (11) of static pressure chamber component, and the other end is used to install second axis of rolling Hold (24);The cylindrical installing hole for being provided with velocity measuring sensor bracket (22) of the concentric shaft sleeve (14), the sensing that tests the speed Device support (22) is circular flange structure, and inside is provided with through hole, for tachogenerator (21) to be propped up installed in tachogenerator On frame (22);The tachogenerator (21) is positioned at follower belt axle (23) upper end.
9. a kind of device for testing clearance seal performance as claimed in claim 8, it is characterised in that the concentric axle sleeve Top in the middle of cylinder (14) is provided with the fluting for being easy to that pressure transducer (17) and high-speed rotation component are installed and changed.
CN201611258633.8A 2016-12-30 2016-12-30 A kind of device for testing high speed rotation clearance seal performance Active CN106679898B (en)

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周栋栋等: "间隙密封旋转接头流场特性仿真分析", 《机械设计与制造》 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107014574A (en) * 2017-05-24 2017-08-04 西安交通大学 A kind of sealing leak characteristic experiment table of adjustable clearance
CN107014574B (en) * 2017-05-24 2019-03-01 西安交通大学 A kind of sealing leak characteristic experiment table of adjustable clearance

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