CN209416598U - A kind of mechanical seal product testing processing unit (plant) - Google Patents
A kind of mechanical seal product testing processing unit (plant) Download PDFInfo
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- CN209416598U CN209416598U CN201920171784.2U CN201920171784U CN209416598U CN 209416598 U CN209416598 U CN 209416598U CN 201920171784 U CN201920171784 U CN 201920171784U CN 209416598 U CN209416598 U CN 209416598U
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Abstract
The utility model relates to mechanical seal fields, specifically provide a kind of mechanical seal product processing detection device, it include: shell, it is interior that there is cavity, the static components of product to be measured are fixedly connected with the casing, the rotating ring of product to be measured is sealed against and is rotatably assorted with static components, cavity is divided into the first annular seal space for being located at sealing surface two sides and the second seal chamber by rotating ring and the sealing surface of static components, stomata is offered respectively on the shell of first annular seal space and the second seal chamber, to be respectively formed air inlet and air outlet；And driving device, for driving rotating ring to rotate according to preset rotation speed.Detection processing unit (plant) provided by the utility model, pass through rotation detection processing, the peeling of sealing surface graphite, sealing surface hidden danger of quality etc. are exposed to airtight examination phase, improve the sealing performance of mechanical seal product by the microprotrusion for eliminating the sealing surface of rotating ring and static components significantly.
Description
Technical field
The utility model relates to mechanical seal fields, and in particular to a kind of mechanical seal product processing detection device.
Background technique
Mechanical seal is a kind of common gland seal device of rotating machinery, has many advantages, such as that leakage rate is small and long service life,
Such as in the turbine pump of liquid-propellant rocket engine, usually between two kinds of propellant mediums, propellant medium and high-temperature fuel gas
Between setting mechanical seal prevent dielectric leakage.Mechanical seal is mainly made of rotating ring, stationary ring, shell and auxiliary seal,
Under the action of axial pressing force and elastic force, rotating ring and stationary ring remain tight fits state, realize the function of barrier dielectric leakage
Energy.
In the prior art, static ring material generally uses graphite, and rotating ring material is stainless steel, and graphite surface microstructure is such as
Shown in Fig. 1, the microstructure of rotating ring and stationary ring contact surface as shown in Fig. 2, the contact surface of rotating ring b and stationary ring a under microstructure
There are higher roughness, therefore, in order to ensure that rotating ring b and stationary ring a sealing performance, are guaranteed using grinding technics dynamic in the prior art
The flatness of ring b and stationary ring a.Product after up to standard for processing, until needing the close of multiple stages toward contact before engine assembly
Ground simulation test test etc. before the detection of envelope property, such as the preceding detection of factory and engine assembly.
Ground simulation test detects the working environment for referring to simulated engine turbine pump, to product under low-temperature and high-speed state
Sealing performance detected.Such as experimental rig disclosed in the Chinese patent application of publication number CN108708802A, the device
It is for utilizing cryogenic media (- 180 DEG C~-196 DEG C of liquid nitrogen etc.) in ground simulation rocket engine low-temperature and high-speed environment
The sealing performance of sealed product is tested.The detection means is high to experimental enviroment requirement, cost is big, it is clear that is not suitable for
Conventional sealed product processing factory, and the device is only capable of carrying out analog detection, nothing for sample products as a kind of experimental rig
Method is detected and is processed for typical products in mass production.
Factory before detection refer to that mechanical seal product is detected before factory, at present producer mostly use greatly appearance detection and
The detection mode of static test.Under some conditions, high to the planarity requirements of the sealing surface of mechanical seal product, therefore only
Quality is difficult to ensure by appearance detection.And static test due to mechanical seal product actual condition there are larger difference, because
This can detect product hermeticity inaccurate, and the means are identical as above-mentioned experimental rig, are only used as sampling examination up to standard
Device can not be detected and be further processed one by one to large batch of product.Therefore it is produced by the sealing of above-mentioned detection means
Often there is the exceeded problem of mechanical sealing leakage amount, are the discovery that after decomposing by graphite grazing face in practical set in product
Abrasive wear occur causes, therefore how the abrasive wear of anti-locating snap ring and stationary ring contact surface becomes solves mechanical sealing leakage amount
Important technological problems, there has been no one kind devices that can mechanical seal product be detected and be processed before factory at present.
Utility model content
Occurs the skill that abrasive wear causes mechanical sealing leakage amount exceeded between rotating ring and stationary ring in the prior art for solution
Art problem, the utility model provide a kind of mechanical seal product testing processing unit (plant).
Meanwhile occurring abrasive wear between rotating ring and stationary ring in the prior art for solution causes mechanical sealing leakage amount exceeded
The technical issues of, the utility model additionally provides a kind of mechanical seal product testing processing method.
In a first aspect, the utility model provides a kind of mechanical seal product testing processing unit (plant), comprising:
Shell, interior to have cavity, the static components of product to be measured are fixedly connected with the shell, the rotating ring of product to be measured and
The static components are sealed against and are rotatably assorted, and the cavity is divided into point by the sealing surfaces of the rotating ring and the static components
Not Wei Yu the sealing surface two sides first annular seal space and the second seal chamber, the first annular seal space and second seal chamber
Stomata is offered respectively on the shell, to be respectively formed air inlet and air outlet；With
Driving device, for driving the rotating ring to rotate according to preset rotation speed.
The driving device includes mandrel, and the mandrel passes through the shell and is rotatablely connected with the housing seal,
One end connects driving motor, and the other end is equipped with the compression spiral shell for installing the mounting groove of the rotating ring and for fixing the rotating ring
Mother, the driving motor drive the mandrel and rotating ring rotation.
The shell includes first shell and second shell, and the static components are mounted by means of bolts on described first
Between shell and the second shell, the first shell and the rotating ring and the sealing surface of the static components form institute
First annular seal space is stated, the second shell and the sealing surface form second seal chamber.
It is equipped with the first gasket in the mounting groove, is carried out for the contact surface to the rotating ring and the mounting groove close
Envelope.
The fixed connection place of the static components and the first shell and the second shell is equipped with adjusting pad.
The fixed connection place of the static components and the first shell and the second shell is close to the air inlet
Side is equipped with the second gasket.
Sealing ring is equipped at the rotation connection of the mandrel and the shell.
The static components are equipped with external screw thread, and the inner wall of the cavity of the shell is equipped with corresponding interior spiral shell
Line, the static components are fixedly connected with the shell by helicitic texture.
The mandrel connect transmission, the air inlet and the gas outlet by shaft coupling with the main shaft of the driving motor
Equipped with plug.
Preset rotation speed≤the 10r/min.
Second aspect, the utility model additionally provide a kind of mechanical seal product testing processing method, this method include with
Lower step:
The rotating ring of product to be measured and static components are mounted on predetermined position, adjust the assembly between rotating ring and static components
Decrement is to preset range；
Adjustment rotating ring is rotated according to preset rotation speed, to gas is filled in test chamber, detects quantity of gas leakage in the unit time,
Until leakage rate detected meets design requirement, processing detection is completed.
Quantity of gas leakage in the detection gas outlet unit time specifically:
Gas leakage is connected in the liquid not dissolved each other with the gas, by detection liquid in generate bubble rate come
Detect the quantity of gas leakage in the unit time.
The design decrement of assembly decrement≤10%, the revolving speed of rotating ring are less than 10r/min, the detection of single product
Time≤60 second.
The technical solution of the utility model has the following beneficial effects:
1) mechanical seal product testing processing unit (plant) provided by the utility model, including shell and driving device, in shell
With cavity, the static components of product to be detected are fixedly connected with shell, and rotating ring is sealed against and is rotatably assorted with static components,
Cavity is divided into the first annular seal space for being located at sealing surface two sides and the second seal chamber by rotating ring and the sealing surface of static components, the
Offer stomata respectively on the shell of one seal chamber and the second seal chamber, to be respectively formed air inlet and air outlet, by into
Port is filled with gas, and the leakage rate for detecting gas outlet can carry out air tightness test, the detection of gas to the sealing performance of sealing surface
It is higher that liquid is compared in sensitivity, while driving device rotates driving rotating ring according to preset rotation speed, to rotating ring and static components
Sealing surface carries out dynamic detection, and testing result is more accurate, while by rotation, eliminating the close of rotating ring and static components significantly
The peeling of sealing surface graphite, sealing surface hidden danger of quality etc. are exposed to airtight examination phase, prevent subsequent assembly by the microprotrusion of cover
Abrasive grain generates abrasive wear, causes mechanical sealing leakage amount exceeded again afterwards.
2) mechanical seal product testing processing unit (plant) provided by the utility model, driving device include mandrel, and mandrel passes through
Shell and with housing seal be rotatablely connected, one end connect driving motor, the other end be equipped with for install rotating ring mounting groove and
For fixing the clamp nut of rotating ring, driving motor band moving mandrel and rotating ring are rotated, by the way that mounting groove and compression is arranged in shaft end
Nut realizes the Fast Installation and adjustment of rotating ring, convenient to use.
3) mechanical seal product testing processing unit (plant) provided by the utility model, shell include first shell and second shell
Body, static components are mounted by means of bolts between first shell and second shell, and first shell and sealing surface form first
Seal chamber, second shell and sealing surface form the second seal chamber.It is more convenient to use fast convenient for the Fast Installation of static components
It is prompt.
4) mechanical seal product testing processing unit (plant) provided by the utility model, mounting groove is interior to be equipped with the first gasket, uses
It is sealed in the contact surface to rotating ring and mounting groove, the first gasket-like is sealed at first, prevents gas along installation slot position
Leakage is set, testing result is influenced.
5) mechanical seal product testing processing unit (plant) provided by the utility model, static components and first shell and second shell
The fixed connection place of body is equipped with adjusting pad, and the assembly decrement of static components and rotating ring can be adjusted by adjusting pad, with
Meet a variety of detection demands.
6) mechanical seal product testing processing unit (plant) provided by the utility model, static components and first shell and second shell
The fixed connection place of body is equipped with the second gasket close to the side of air inlet, and the second gasket-like is sealed at second, prevents chamber
Intracorporal gas leakage, influences testing result.
7) mechanical seal product testing processing unit (plant) provided by the utility model is equipped at the rotation connection of mandrel and shell
Sealing ring, sealing ring form three seals, prevent the intracorporal gas leakage of chamber, influence testing result.
8) mechanical seal product testing processing unit (plant) provided by the utility model, static components are equipped with external screw thread, shell
The inner wall of cavity be equipped with corresponding internal screw thread, static components are fixedly connected with shell by helicitic texture, convenient for quiet
The Fast Installation of ring assemblies, while convenient for the adjusting to static components and rotating ring assembly decrement, without adding spacer.
9) mechanical seal product testing processing method provided by the utility model is led to using above-mentioned detection processing unit (plant)
It crosses and gas is filled with to air inlet, bubble rate detection gas leakage rate is utilized at the position of gas outlet, to mechanical seal product
Sealing performance carries out dynamic detection, and detection effect is more accurate, while can be further processed for non-compliant product,
It effectively prevent rotating ring and stationary ring to occur abrasive wear in subsequent assembling process, improves the sealing performance of mechanical seal product.
Detailed description of the invention
It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art
Specific embodiment or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below
In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art
Under the premise of labour, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is the surface microstructure of stationary ring graphite material；
Fig. 2 is the microstructure of rotating ring Yu stationary ring sealing surface；
Fig. 3 is shown according to the cross-section structure of mechanical seal product testing processing unit (plant) in a kind of embodiment of the utility model
It is intended to.
Description of symbols:
1- driving motor；2- shaft coupling；3- mandrel；4- first shell；5- air inlet；6- plug；7- bolt；8- sealing
Circle；The gas outlet 9-；10- clamp nut；11- second shell；12- static components；13- adjusting pad；The second gasket of 14-；15- is dynamic
Ring；The first gasket of 16-；I- first annular seal space；The second seal chamber of II-.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, rather than whole embodiments.Based on the implementation in the utility model
Mode, every other embodiment obtained by those of ordinary skill in the art without making creative efforts, all
Belong to the range of the utility model protection.In addition, skill involved in the utility model different embodiments disclosed below
Art feature can be combined with each other as long as they do not conflict with each other.
As shown in figure 3, in the present embodiment, for the detection processing unit (plant) of mechanical seal product, including shell and drive
Dynamic device, shell include first shell 4 and second shell 11, and first shell 4 and second shell 11 are mutually butted in shell
Inside forms the cavity of sealing, and rotating ring 15 and static components 12 seal assembly in the cavity.Driving device includes 1 He of driving motor
Mandrel 3, mandrel 3 pass through first shell 4 and seal with first shell 4 and be rotatablely connected, and mandrel 3 is located at one end outside first shell 4
It is connected by shaft coupling 2 with the main shaft of driving motor 1, is rotated by driving motor 1 with moving mandrel 3.The other end of mandrel 3 is equipped with peace
Tankage, mounting groove is interior for being adapted to the rotating ring 15 for installing mechanical seal product to be detected, and rotating ring 15 is mounted in mounting groove, by pressing
Tight nut 10 positions clamping, to realize the assembly of rotating ring 15 Yu mandrel 3.Clamp nut 10 is located at the center of mandrel 3,
It is spirally connected by screw thread and mandrel 3, rotating ring 15 is mounted between clamp nut 10 and mandrel 3, by screwing clamp nut 10
Realize the fastening to mandrel 3, it is easy for installation.
In the present embodiment, 12 outer ring of static components is equipped with flange, and static components 12 are fixedly mounted on the by flange
Between one shell 4 and second shell 11.As shown in figure 3, bolt 7 sequentially passes through 12 flanged joint of second shell 11 and static components
In the threaded hole in first shell 4, static components 12 are fixed by tightening bolt 7, complete the dress of static components 12
Match.
Rotating ring 15 and static components 12 after assembly seal against in the intracorporal cavity of shell, and the sealing surface of the two is by cavity
It is divided into the first annular seal space I for being located at two sides and the second seal chamber II, the shell of first annular seal space I is equipped with air inlet 5, the
The shell of two seal chamber II is equipped with gas outlet 9.In the present embodiment, it is close to be equipped with first for the contact surface of mounting groove and rotating ring 15
Packing 16, the first gasket 16 are sealed the contact surface of mounting groove and rotating ring 15, form the first seal structures, prevent gas
Body leaks in the second seal chamber II through the contact surface.The installation site of static components 12 and first shell 4 and second shell 11
It is provided with the second gasket 14, the second gasket 14, which is located at, forms the second seal structures close to the side of air inlet 5, prevents chamber
Intracorporal gas is leaked to except shell at this, influences to detect.It is set at mandrel 3 and the position of the rotation connection of first shell 4
Have a sealing ring 8, sealing ring 8 forms third seal structures, prevent gas through mandrel 3 and housing junction leak to shell it
Outside, it influences to detect.Through above-mentioned sealing structure, closed cavity is formed in the cavity of shell, gas is close into first through air inlet 5
Chamber I is sealed, is only capable of through the sealing face leakage of rotating ring 15 and static components 12 to the second seal chamber II, then be discharged through gas outlet 9.The
The materials such as rubber, soft graphite or asbestos can be used in one gasket 16, the second gasket 14 and sealing ring 8.
In the present embodiment, as shown in figure 3, flange and first shell 4 and second shell 11 in static components 12 are solid
Surely adjusting pad 13 is equipped at the position connected, adjusting pad 13 is used to be adjusted the installation axial position of static components 12, lead to
The adjusting pad 13 for crossing setting different-thickness realizes assembly decrement different between static components 12 and rotating ring 15, in this embodiment party
Design decrement of the assembly decrement less than 10% in formula, between rotating ring 15 and static components 12.Adjusting pad 13 can be used just
The materials such as property washer, such as 304 steel.The end of air inlet 5 and gas outlet 9 is provided with plug 6, when detection device does not work,
It plug 6 can be used to seal inside cavity, keep inside cavity clean and tidy.
The structure of the above-mentioned detection processing unit (plant) to present embodiment is illustrated, below to the use principle of the device
It is illustrated.
Rotating ring 15 is installed with static components 12 according to scheduled installation site and fitting allowance, and air inlet 5 connects gas
Source, gas source in cavity to being filled with gas (such as air), and driving motor 1 drives rotating ring 15 to rotate, revolving speed≤10r/min.It is micro
Gas in first annular seal space I through the sealing face leakage between rotating ring 15 and static components 12 to the second seal chamber II, through outlet
Mouth 9 is discharged, and 9 connecting detection device of gas outlet detects gas leakage amount, completes detection after meeting design requirement, and more
Change another set product.
On the basis of the above embodiment, there are also other alternative embodiment party for the detection processing unit (plant) of the utility model
Formula.
In an alternate embodiments, the outer rings of static components 12 is equipped with external screw thread, on the cavity inner wall of first shell 4
Equipped with internal screw thread, static components 12 are fixedly connected with shell by helicitic texture, by adjusting the screw-in length of static components 12
The control to assembly decrement can be realized, convenient for the Fast Installation of product.
In another alternate embodiments, gas, the side discharge of rotating ring 15 can be filled with from the side of static components 12
The function of leaked gas, i.e. air inlet and gas outlet can be interchanged, it should be understood that, it needs the second gasket 14
It is provided close to the side of air inlet.
Second aspect, the utility model additionally provide a kind of detection processing method for mechanical seal product, this method
Using above-mentioned processing unit (plant), specifically includes the following steps:
The rotating ring of product to be measured and static components are mounted on predetermined position, adjust the assembly between rotating ring and static components
The design decrement of decrement≤10%；
Driving motor drives rotating ring to be filled with gas (such as air etc.) to air inlet according to the rotational speed of≤10r/min,
Quantity of gas leakage stops detecting if meeting design requirement in the detection gas outlet unit time, if not meeting setting requirements,
Extend the rotation time of rotating ring, until meeting design requirement.
In the method, gas outlet is connected in the liquid not dissolved each other with gas, passes through the bubble generated in detection liquid
Rate detects the quantity of gas leakage in the unit time.In the detection process, the assembly decrement of rotating ring and static components≤
10% design decrement, detection time≤60 second of single product.
In an illustrative embodiment, it is detected as with the mechanical sealing assembly processing of rocket engine turbopump
Example, general bubble rate≤200 bubbles/minute are qualification.Rotating ring and static components are installed according to above-mentioned principle, driving device is driven
Dynamic rotating ring is rotated with 10r/min, if bubble rate is lower than 200 bubbles/minute, completes to detect.When bubble rate be higher than 200 bubble/
Minute, rotating ring rotation is persistently driven, the microprotrusion of the sealing surface of rotating ring and static components is eliminated, until bubble rate is lower than 200
Bubble/minute completes processing detection.Detection time≤60 second of single product avoid rotating ring and stationary ring excessive wear, influence workpiece
Factory.
Obviously, above embodiment is only intended to clearly illustrate example, and does not limit the embodiments.
For those of ordinary skill in the art, other various forms of variations can also be made on the basis of the above description
Or it changes.There is no necessity and possibility to exhaust all the enbodiments.And obvious variation extended from this
Or it changes among the protection scope created still in the utility model.
Claims (10)
1. a kind of mechanical seal product testing processing unit (plant) characterized by comprising
Shell, interior to have cavity, the static components (12) of product to be measured are fixedly connected with the shell, the rotating ring of product to be measured
(15) it seals against and is rotatably assorted with the static components (12), the sealing of the rotating ring (15) and the static components (12)
The cavity is divided into the first annular seal space (I) and the second seal chamber (II) for being located at the sealing surface two sides by face, and described
Stomata is offered respectively on the shell of one seal chamber (I) and second seal chamber (II), to be respectively formed air inlet (5)
With gas outlet (9)；With
Driving device, for driving the rotating ring (15) to rotate according to preset rotation speed.
2. mechanical seal product testing processing unit (plant) according to claim 1, which is characterized in that
The driving device includes mandrel (3), and the mandrel (3) passes through the shell and is rotatablely connected with the housing seal,
One end connects driving motor (1), and the other end is described dynamic equipped with the mounting groove for installing the rotating ring (15) and for fixing
The clamp nut (10) of ring (15), the driving motor (1) drive the mandrel (3) and the rotating ring (15) rotation.
3. mechanical seal product testing processing unit (plant) according to claim 2, which is characterized in that
The shell includes first shell (4) and second shell (11), and the static components (12) are fixedly mounted by bolt (7)
Between the first shell (4) and the second shell (11), the first shell (4) and the rotating ring (15) and described quiet
The sealing surface of ring assemblies (12) is formed the first annular seal space (I), and the second shell (11) is formed with the sealing surface
Second seal chamber (II).
4. mechanical seal product testing processing unit (plant) according to claim 2, which is characterized in that
The first gasket (16) are equipped in the mounting groove, are carried out for the contact surface to the rotating ring (15) and the mounting groove
Sealing.
5. mechanical seal product testing processing unit (plant) according to claim 3, which is characterized in that
The static components (12) and the first shell (4) and the fixed connection place of the second shell (11) are equipped with adjusting pad
(13)。
6. mechanical seal product testing processing unit (plant) according to claim 3, which is characterized in that
The static components (12) and the first shell (4) and the fixed connection place of the second shell (11) described in into
The side of port (5) is equipped with the second gasket (14).
7. mechanical seal product testing processing unit (plant) according to claim 2, which is characterized in that
Sealing ring (8) are equipped at the rotation connection of the mandrel (3) and the shell.
8. mechanical seal product testing processing unit (plant) according to claim 2, which is characterized in that
The static components (12) are equipped with external screw thread, and the inner wall of the cavity of the shell is equipped with corresponding interior spiral shell
Line, the static components (12) are fixedly connected with the shell by helicitic texture.
9. mechanical seal product testing processing unit (plant) according to claim 2, which is characterized in that
The mandrel (3) connect transmission, the air inlet (5) and institute by shaft coupling (2) with the main shaft of the driving motor (1)
Gas outlet (9) are stated equipped with plug.
10. mechanical seal product testing processing unit (plant) according to claim 1, which is characterized in that
Preset rotation speed≤the 10r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920171784.2U CN209416598U (en) | 2019-01-30 | 2019-01-30 | A kind of mechanical seal product testing processing unit (plant) |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920171784.2U CN209416598U (en) | 2019-01-30 | 2019-01-30 | A kind of mechanical seal product testing processing unit (plant) |
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| CN209416598U true CN209416598U (en) | 2019-09-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752141A (en) * | 2019-01-30 | 2019-05-14 | 北京星际荣耀空间科技有限公司 | A kind of mechanical seal product testing processing unit (plant) and method |
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2019
- 2019-01-30 CN CN201920171784.2U patent/CN209416598U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109752141A (en) * | 2019-01-30 | 2019-05-14 | 北京星际荣耀空间科技有限公司 | A kind of mechanical seal product testing processing unit (plant) and method |
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Effective date of registration: 20200106 Address after: 100176 Beijing Daxing District Beijing economic and Technological Development Zone, 9 South of Shing Sheng 1 1 3 story 329 Co-patentee after: Beijing Star glory Technology Co., Ltd Patentee after: Beijing interstellar glory InterSpace Technology Ltd Address before: 100176 Building No. 9, Dishengnan Street, Daxing Economic and Technological Development Zone, Beijing, 329 Patentee before: Beijing interstellar glory InterSpace Technology Ltd |
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| CP03 | Change of name, title or address |
Address after: 100045 1-14-214, 2nd floor, 136 Xiwai street, Xicheng District, Beijing Patentee after: Beijing Star glory Space Technology Co.,Ltd. Patentee after: Beijing Star glory Technology Co.,Ltd. Address before: 100176 329, 3rd floor, building 1, No.9, Disheng South Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee before: BEIJING XINGJIRONGYAO SPACE TECHNOLOGY Co.,Ltd. Patentee before: Beijing Star glory Technology Co.,Ltd. |