CN107702871B - A kind of high pressure sealing detection system - Google Patents
A kind of high pressure sealing detection system Download PDFInfo
- Publication number
- CN107702871B CN107702871B CN201710938512.6A CN201710938512A CN107702871B CN 107702871 B CN107702871 B CN 107702871B CN 201710938512 A CN201710938512 A CN 201710938512A CN 107702871 B CN107702871 B CN 107702871B
- Authority
- CN
- China
- Prior art keywords
- plunger
- test piece
- high pressure
- pressure
- sealed test
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—Investigating 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
- G01M3/28—Investigating 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 for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2876—Investigating 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 for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for valves
Abstract
The invention discloses a kind of high pressure sealing detection systems, including high pressure loading device, high pressure load pipeline, sealed test piece fixture and axle power loading device.High pressure loading device includes load bar, plunger and plunger bushing.Load bar height can be gone up and down, and load bar bottom is engaged with plunger head.Plunger bushing height and position is fixed, and plunger cavity is equipped at the central axis of plunger bushing, and plunger cavity bottom is equipped with oil guiding hole.Sealed test piece fixture includes upper plate, lower plate, several vertical connectors and intermating guides.Sealed test piece and intermating guides are located at same axis.Axle power loading device includes load pressure head, automatic aligning part and axial force sensor；It includes fuel tank, plunger cavity oil outlet pipe, plunger cavity oil inlet pipe, sealed test piece pressure pipeline and sealed test piece pressure relief pipe that high pressure, which loads pipeline,.After adopting the above structure, it is able to achieve the detection of sealed test piece sealing performance under 0-300MPa pressure, load axle power 0-300000N；And clamped one time, realize a series of sealing performance test.
Description
Technical field
The present invention relates to high pressure valve technical field of sealing technology, especially a kind of high pressure sealing detection system.
Background technique
With the development of World Science technology, requirement of the people to industrial products is higher and higher, various liquid, gas pressure
Pressure medium in system is higher and higher, proposes new challenge to various hydraulic, air pressure components sealing performances.Due to being situated between
Matter pressure is high, generally requires in sealing detection experiment according to high-pressure-resistant sealed testing stand, structure is complicated for experimental bench, pipeline, valve
More, experiment mesohigh medium is once occur leakage or pressure duct rupture, and a large amount of high pressure sealing media can be to reality in experimental bench
Test personnel component security threat.Structure is complicated for experimental bench, and inner sealing test specimen is more, and high pressure sealing medium is easy internal leakage,
Cause in entire experiments of sealing performance system detect pressure medium it is unstable, pressure maintaining ability is weaker.Consider for laboratory safety,
Do not have not can be carried out the sealing performance test experience of part in the case where experimenter.The human cost of entire sealing performance detection
It is put into lab resources very high.
Summary of the invention
In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a kind of high pressure sealings to detect
System, the high pressure sealing detection system are able to achieve sealed test piece sealing performance under 0-300MPa pressure, load axle power 0-300000N
Detection；Clamped one time is able to achieve a series of sealing performance test, can be up in the case where the realization no supervision of low cost
The sealing performance of the sealing element of a few hours or even a couple of days detects test.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of high pressure sealing detection system, the sealing performance for sealed test piece detect；High pressure sealing detection system includes
High pressure loading device, high pressure load pipeline and sealed test piece fixture.
Axle power load groove is provided at the top of sealed test piece, the side of sealed test piece is provided with oil inlet.
High pressure loading device includes load bar, plunger and plunger bushing.
Load bar height can be gone up and down, and load bar bottom and plunger head contact with each other cooperation.
Plunger bushing height and position is fixed, and plunger cavity is provided in plunger bushing, and plunger cavity bottom is provided with oil guiding hole.
Plunger can move back and forth in plunger cavity.
Sealed test piece fixture includes upper plate, lower plate, several vertical connectors, intermating guides and axle power loading device.
Upper plate is fixedly connected with lower plate by several vertical connectors.
The top center of upper plate is provided with load central through hole, is provided with limit shoulder in the load central through hole；It is intermediate
The top of guide part is provided with the shaft shoulder being located at right above limit shoulder, the outside wall surface of intermating guides and the inner ring of limit shoulder
Face clearance fit；The bottom centre of intermating guides is provided with cambered surface two.
Sealed test piece is placed in lower plate and is located at same axis with intermating guides.
Axle power loading device includes load pressure head, automatic aligning part and axial force sensor；During load pressure head is co-axially located at
Between guide part surface, load pressure head be connected with loading mechanism, the height for loading pressure head can be gone up and down；Automatic aligning part is
Sphere structure is placed in the axle power load groove of sealed test piece, the upper surface of automatic aligning part and the cambered surface of intermating guides
Two match；Axial force sensor is arranged between sealed test piece bottom and lower plate.
High pressure load pipeline include fuel tank, plunger cavity oil inlet pipe, plunger cavity oil outlet pipe, sealed test piece pressure pipeline and
Sealed test piece pressure relief pipe.
One end of plunger cavity oil inlet pipe and plunger cavity oil outlet pipe is connected with fuel tank, plunger cavity oil inlet pipe and column
The other end of plug chamber oil outlet pipe is connected with the oil guiding hole of plunger cavity bottom；Check valve is provided on plunger cavity oil inlet pipe
Two；Plunger cavity oil outlet pipe is disposed with check valve one and pressure limiting valve along fuel-displaced direction.
One end of sealed test piece pressure pipeline is connected in the plunger cavity oil outlet pipe between pressure limiting valve and check valve one, close
The other end of envelope test specimen pressure pipeline is connected with the oil inlet in sealed test piece；Oil pressure is provided on sealed test piece pressure pipeline
Table.
One end of sealed test piece pressure relief pipe is connected with fuel tank, and the other end of sealed test piece pressure relief pipe is connected to sealing
On test specimen pressure pipeline, relief valve is provided in the middle part of sealed test piece pressure relief pipe.
Load bar is lead screw or the elevating lever being connected with loading mechanism.
Oil holding slot is provided at the top of the plunger cavity, the internal diameter of oil holding slot is greater than the internal diameter of plunger cavity；High pressure load pipe
Road further includes plunger lubricating pipe, and one end of the plunger lubricating pipe is connected with fuel tank, the other end of plunger lubricating pipe with
Oil holding slot is connected.
The load bar bottom and plunger head circular arc cooperate.
High pressure loading device further includes retracting spring, and retracting spring is sleeved on positioned at plunger bushing and plunger head between the two
Plunger on.
Deformable cavity is provided on plunger base end face in plunger cavity.
The deformable cavity is in pit shape, ring-type or tooth form pit shape.
It is provided with sealing enhancing structure in plunger base outside wall surface in plunger cavity, which is several
Bulge loop band or several annular grooves or several arc grooves.
High pressure loading device is 0-300MPa to the on-load pressure range that sealed test piece provides.
Axle power loading device is 0-300000N to the load axle power range that sealed test piece provides.
The present invention with the above structure, it has the following beneficial effects:
1. high pressure sealing detection system of the invention is able to achieve under 0-300MPa pressure, load axle power 0-300000N and seals
The detection of test specimen sealing performance.And clamped one time, realize a series of sealing performance test.Such as realize sealed medium pressure every
Mono- measurement condition of 10MPa amounts to 30 pressure.It seals axle power and amounts to 30 axle powers every mono- operating condition of 1000N, namely be
It unites and 30 × 30 different measurement conditions can be achieved.Such as 100MPa pressure may be implemented, 10000N seals axle power；100MPa pressure
Power, 11000N seal axle power；120MPa pressure, 11000N seal axle power；150MPa pressure, 11000N seal axle power etc. series
Sealing performance test.
2. the setting of pressure head and axial force sensor is loaded in above-mentioned axle power loading device, it can be real in axle power loading procedure
When monitoring axle power load data, form load axle power Real-time Feedback, it is accurate to control in order to control the loading procedure of loading device
Make the load axle power of sealed test piece.
3. the setting of automatic aligning part in above-mentioned axle power loading device can be realized and load adjust automatically in title in axle power
Loading axis line of force is overlapped axle power position and the axis of sealed test piece, avoids generating axle power unbalance loading.
4. the setting of above-mentioned check valve one and check valve two, the plunger cavity in plunger backhaul of check valve two is inhaled close in fuel tank
It opens when sealing medium, while check valve one is closed, is closed in plunger cavity full of check valve two after sealing medium.Plunger sets up pressure
Check valve one is opened after power, while check valve two is closed, and high pressure sealing medium is transmitted in pressure piping and sealed test piece, real
Now keep system pressure function.
It is more than pressure limiting valve after pressure limiting valve setting value 5. the pressure value of pressure limiting valve can be arranged in the setting of above-mentioned pressure limiting valve
It will open, by the way that partial high pressure medium is let out oil return box, realize reduction experiment loine pressure and keeps System Testing Pressure function.
6. the setting of above-mentioned relief valve, relief valve is closed during the experiment, relief valve, unloading system are opened after the completion of experiment
Pressure in system.
7. the setting of above-mentioned plunger base deformable cavity, is able to achieve during to coated by dielectric, pressure medium is higher, plunger
Leading edge deformation is bigger, is more adjacent to plunger bushing, realizes self-sealing function.
8. the setting of above-mentioned plunger base sealing enhancing structure, is able to achieve sealability between liftout plunger and plunger bushing
Function.
9. the setting of above-mentioned oil holding slot and plunger lubricating pipe, can will be leaked between plunger and plunger bushing in loading procedure
Sealing medium collects, and cleans the solid particulate matter being stained with from air on plunger, thus realize to the lubrication of plunger and
Cleaning, improves the service life of loading device.
10. the contact site of above-mentioned plunger and load bar uses arcuation fit structure, the effect of moment of friction can be reduced, to the greatest extent
Amount reduces the load of drive load bar.
11. high pressure is loaded pipeline by check valve by the present invention and high pressure loading device separates, adjust during the experiment
It can carry out again pressurizeing to sealing medium at any time after pressure limiting valve voltage limiting value, sealed test piece clamped one time be realized, under different pressures
Sealing performance detection.
In conclusion high pressure sealing detection system of the invention, its of complicated experimental stand and laboratory are disobeyed
His corollary equipment is not necessarily to special power source, experiment safety, and system pressure is easy to keep stable, examines convenient for prolonged leakproofness
It surveys.The load axle power of detection pressure and sealed test piece can arbitrarily be adjusted according to the needs of detection, carry out a wide range of axle power load,
The sealing test experiment of a wide range of sealed medium pressure variation.The cost for saving significantly on entire sealing performance detection, shortens entire
Experimental period.
Detailed description of the invention
Fig. 1 shows a kind of overall structure diagram of high pressure sealing detection system of the present invention.
Fig. 2 shows the structural schematic diagram of Fig. 1 mesohigh loading device.
Fig. 3 shows the structural schematic diagram of plunger bushing.
Fig. 4 shows the structural schematic diagram of sealed test piece fixture and axle power loading device.
Fig. 5 shows the partial structural diagram of several preferred embodiments of plunger.
Wherein have:
1. high pressure loading device；
12. screw rodb base；
13 screw rods；131. position-limit mechanism；132. cambered surface one；
14. connecting rod；
15. plunger；151. deformable cavity；152. sealing enhancing structures；153. taper circular arc heads；
16. retracting spring；
17. plunger bushing；171. plunger cavity；172. oil holding slot；173. oil guiding hole；
2. high pressure loads pipeline；
21. fuel tank；
22. plunger cavity oil outlet pipe；221. pressure limiting valve；222. check valves one；
23. plunger cavity oil inlet pipe；231. check valves two；
24. plunger lubricating pipe；
25. sealed test piece pressure pipeline；251. oil pressure gauge；
26. sealed test piece pressure relief pipe；261. relief valve；
3. sealed test piece fixture；
31. upper plate；311. load central through holes；312. limit shoulders；
32. lower plate；
33. vertical connector；331. fixture nut；
35. intermediate guide way；351. the shaft shoulder；352. cambered surfaces two；
4. axle power loading device；
41. loading pressure head；42. automatic aligning part；43. axial force sensor；
5. sealed test piece；51. axle power loads groove；52. oil inlet.
In addition, D1 indicates the internal diameter of plunger cavity in Fig. 3；The internal diameter of D2 expression oil holding slot.
Specific embodiment
Xia Mianjiehefutuhejuti compare Jia Shishifangshiduibenfamingzuojinyibuxiangxishuoming.
As shown in Figure 1 and Figure 4, the sealed test piece 5 in the present invention, top are provided with axle power load groove 51, which adds
Carrying groove 51 can be V-type, or arc or other shapes.The side of sealed test piece is provided with oil inlet 52.
Using high pressure sealing detection system of the invention, then the sealing performance detection of sealed test piece 5 can be used for.
As shown in Figures 1 to 5, a kind of high pressure sealing detection system, including high pressure loading device 1, high pressure load 2 and of pipeline
Sealed test piece fixture 3.
High pressure loading device 1 includes screw rodb base 12, load bar, connecting rod 14, plunger 15, retracting spring 16 and plunger bushing
17.High pressure loading device is 0-300MPa to the on-load pressure range that sealed test piece provides.
Load bar is preferably screw rod 13, but may be the other structures such as the elevating lever being connected with loading mechanism.Below
By taking lead screw as an example, the present invention is described in detail.
Screw rod is fixed by screw rodb base, and screw rod height can be gone up and down, be preferably provided on screw rod can to screw rod adjustable height into
The position-limit mechanism 131 of row limit.The thread surface preferred coatings of screw rod are handled, such as are blacked, carburizing, can also be in use process
Middle coating lubricating grease.
Screw rod bottom and plunger head contact with each other cooperation.Preferably cambered surface cooperates.Further preferably, the bottom of screw rod
It is provided with cambered surface 1, the taper circular arc head 153 that can be matched with cambered surface one is provided at the top of plunger.As an alternative,
Taper circular arc head can be set in screw rod bottom, cambered surface is set in plunger base.
Above-mentioned cambered surface fit system, can reduce the friction loss of screw rod transmission system, excellent on the arcuation surface being bonded to each other
Lubricating grease is smeared in choosing, is reduced frictional force when system operation, is reduced abrasion.
17 height and position of plunger bushing is fixed, and plunger bushing is preferably fixedly connected by several connecting rods 14 with screw rodb base.
Plunger cavity 171 is provided at the central axis of plunger bushing, plunger can move back and forth in plunger cavity, in the screw rod upper limit
Under the limitation of position mechanism, screw rod can be hindered to move further up, avoid screw rod stroke beyond ram travel, to prevent column
Plug falls off out of plunger cavity.
Gap between plunger bushing and plunger controls between 0-0.1mm.The matching surface of plunger and plunger bushing will pass through
Precision Machining, surface roughness are controlled in 0.8 or less Ra.Reduce the leakage of medium in loading procedure.Plunger and plunger bushing connect
Touching surface needs to be surface-treated, and to improve wearability, reduces fretting wear.
Preferably periphery is set with retracting spring 16 on plunger bushing and the plunger of taper circular arc head between the two.
Deformable cavity 151 is provided on plunger base end face in plunger cavity.Deformable cavity is preferably in shown in fig. 5 various
Structure, such as pit shape, ring-type or tooth form pit shape.
In addition, sealing enhancing structure 152 is provided in the plunger base outside wall surface being located in plunger cavity, sealing enhancing knot
Structure is preferably several bulge loop bands or several annular grooves or several arc grooves etc. as shown in Figure 5.
Oil holding slot 172 is provided at the top of plunger cavity, as shown in figure 3, the internal diameter D2 of oil holding slot is greater than plunger cavity
Internal diameter D1.After being arranged in this way, the sealing medium leaked between plunger and plunger bushing can be collected, it is close by what is largely leaked
Seal medium water conservancy diversion oil return box, and a part stayed and does the lubrication and cleaning of plunger and plunger bushing, prevent particulate matter in air into
Enter between plunger and plunger cavity, generates particulate wear.
Plunger cavity bottom is provided with oil guiding hole 173.
Sealed test piece fixture includes that upper plate 31, lower plate 32, several vertical connectors 33, intermating guides 35 and axle power add
It carries and sets 4.
The top center of upper plate is provided with load central through hole 311, is provided with limit shoulder in the load central through hole
312；The top of intermating guides is provided with the shaft shoulder 351 being located at right above limit shoulder, the outside wall surface and limit of intermating guides
The inner ring surface clearance fit of position shoulder；The bottom centre of intermating guides is provided with cambered surface 2 352.
Upper plate is fixedly connected with lower plate by several vertical connectors, and sealed test piece is placed in lower plate and leads with centre
It is located at same axis to part.
Every vertical is both preferably between connector and upper plate is threadedly coupled, and is fixed by fixture nut 331.
Axle power loading device 4 includes load pressure head 41, automatic aligning part 42 and axial force sensor 43.Axle power loading device pair
The load axle power range that sealed test piece provides is 0-300000N.
Load pressure head is co-axially located at the surface of intermating guides, and load pressure head is connected with loading mechanism, load pressure
The height of head can be gone up and down.As an alternative, load pressure head and intermating guides can also be wholely set.
Automatic aligning part is sphere structure, is able to achieve self-aligning function.Automatic aligning part is placed on the axis of sealed test piece
Power loads in groove, and the upper surface of automatic aligning part is matched with the cambered surface two of intermating guides, to guarantee that reliable contacts pass
Power.
Axial force sensor is preferably provided between sealed test piece bottom and lower plate, it is of course also possible to which sealed test piece is arranged in
Between upper plate.
It includes fuel tank 21, plunger cavity oil outlet pipe 22, plunger cavity oil inlet pipe 23, plunger lubrication management that high pressure, which loads pipeline 2,
Road 24, sealed test piece pressure pipeline 25 and sealed test piece pressure relief pipe 26.
One end of plunger cavity oil inlet pipe and plunger cavity oil outlet pipe is connected with fuel tank, plunger cavity oil inlet pipe and column
The other end of plug chamber oil outlet pipe is connected with the oil guiding hole of plunger cavity bottom；Plunger cavity oil outlet pipe along fuel-displaced direction successively
It is provided with check valve 1 and pressure limiting valve 221；Check valve 2 231 is provided on plunger cavity oil inlet pipe.
One end of plunger lubricating pipe is connected with fuel tank, and the other end of plunger lubricating pipe is connected with oil holding slot.
One end of sealed test piece pressure pipeline is connected in the plunger cavity oil outlet pipe between pressure limiting valve and check valve one, close
The other end of envelope test specimen pressure pipeline is connected with the oil inlet in sealed test piece；Oil pressure is provided on sealed test piece pressure pipeline
Table 251.
One end of sealed test piece pressure relief pipe is connected with fuel tank, and the other end of sealed test piece pressure relief pipe is connected to sealing
On test specimen pressure pipeline, relief valve 261 is provided in the middle part of sealed test piece pressure relief pipe.
Sealing performance test when, as needed, entire sealed test piece fixture and sealed test piece can be put into together one it is close
It closes in container, to detect the leakage situation of sealing medium.
Sealing medium to be pressurised is added in fuel tank, sets the limitation pressure of pressure limiting valve, closes relief valve.Then, to
Uninstall direction rotary screw rod, as the backhaul of screw rod rotates, plunger can move upwards under the thrust of retracting spring, in plunger cavity
Certain vacuum degree is formed, the sealing medium to be pressurised in fuel tank can be full of plunger cavity by check valve two.Plunger cavity is full of it
Backward loading direction tightens screw rod, enters sealed test piece by check valve one after the sealing medium in plunger cavity is pressurized.
The oil guiding hole of plunger cavity bottom, the outlet for being sealing medium is import again.Sealing when plunger backhaul, in fuel tank
Medium is opened by check valve two, and sealing medium enters plunger cavity, and check valve one is closed at this time, is effectively prevented from pressure piping
Interior extraction sealing medium.
When plunger pressurization, check valve two is closed, and check valve one is opened, and high pressure sealing medium is loaded into test pipeline,
Until pressure rises to the setup pressure value of pressure limiting valve, pressure limiting valve starts pressure release.
If sealed test piece pressure pipeline and the cavity volume of sealed test piece are larger, silk can be rotated to uninstall direction at any time
Bar loads high pressure oil again, until oil pressure gauge shows stable goal pressure.
After pressure in sealed test piece pressure pipeline is set up, screw rod can be mobile with backhaul, can also loosen load
Load.With loosening for screw rod, plunger will backhaul under the action of retracting spring, the high pressure sealing medium in plunger cavity will complete
Pressure release.
After the sealed medium pressure in high-pressure oil passage is established and keeps stablizing, oil pressure gauge in a period of time can be used
Pressure reduction values perhaps observe sealed test piece whether have leakage or using other equipment detect leakage situation.Wherein, it seals
Whether test specimen has leakage, is an important evaluation index of sealed test piece sealing performance.
Sealed test piece can start relief valve, by the high pressure sealing in high-pressure oil pipe after sealing propertytest experiment is completed
Medium is unloaded in fuel tank.After unloading, the load pressure head of sealed test piece can be loosened, remove sealed test piece, carry out next group
Experiment terminates test job.
The preferred embodiment of the present invention has been described above in detail, still, during present invention is not limited to the embodiments described above
Detail a variety of equivalents can be carried out to technical solution of the present invention within the scope of the technical concept of the present invention, this
A little equivalents all belong to the scope of protection of the present invention.
Claims (10)
1. a kind of high pressure sealing detection system, the sealing performance for sealed test piece is detected；It is characterized by: high pressure sealing detects
System includes high pressure loading device, high pressure load pipeline and sealed test piece fixture；
Axle power load groove is provided at the top of sealed test piece, the side of sealed test piece is provided with oil inlet；
High pressure loading device includes load bar, plunger and plunger bushing；
Load bar height can be gone up and down, and load bar bottom and plunger head contact with each other cooperation；
Plunger bushing height and position is fixed, and plunger cavity is provided in plunger bushing, and plunger cavity bottom is provided with oil guiding hole；
Plunger can move back and forth in plunger cavity；
Sealed test piece fixture includes upper plate, lower plate, several vertical connectors, intermating guides and axle power loading device；
Upper plate is fixedly connected with lower plate by several vertical connectors；
The top center of upper plate is provided with load central through hole, is provided with limit shoulder in the load central through hole；Centre guiding
The top of part is provided with the shaft shoulder being located at right above limit shoulder, between the outside wall surface of intermating guides and the inner ring surface for limiting shoulder
Gap cooperation；The bottom centre of intermating guides is provided with cambered surface two；
Sealed test piece is placed in lower plate and is located at same axis with intermating guides；
Axle power loading device includes load pressure head, automatic aligning part and axial force sensor；Load pressure head is co-axially located at centre and leads
To the surface of part, loads pressure head and be connected with loading mechanism, the height for loading pressure head can be gone up and down；Automatic aligning part is sphere
Structure is placed in the axle power load groove of sealed test piece, the upper surface of automatic aligning part and the cambered surface two-phase of intermating guides
Cooperation；Axial force sensor is arranged between sealed test piece bottom and lower plate；
It includes fuel tank, plunger cavity oil inlet pipe, plunger cavity oil outlet pipe, sealed test piece pressure pipeline and sealing that high pressure, which loads pipeline,
Test specimen pressure relief pipe；
One end of plunger cavity oil inlet pipe and plunger cavity oil outlet pipe is connected with fuel tank, plunger cavity oil inlet pipe and plunger cavity
The other end of oil outlet pipe is connected with the oil guiding hole of plunger cavity bottom；Check valve two is provided on plunger cavity oil inlet pipe；
Plunger cavity oil outlet pipe is disposed with check valve one and pressure limiting valve along fuel-displaced direction；
One end of sealed test piece pressure pipeline is connected in the plunger cavity oil outlet pipe between pressure limiting valve and check valve one, sealing examination
The other end of part pressure pipeline is connected with the oil inlet in sealed test piece；Oil pressure gauge is provided on sealed test piece pressure pipeline；
One end of sealed test piece pressure relief pipe is connected with fuel tank, and the other end of sealed test piece pressure relief pipe is connected to sealed test piece
On pressure pipeline, relief valve is provided in the middle part of sealed test piece pressure relief pipe.
2. high pressure sealing detection system according to claim 1, it is characterised in that: load bar is lead screw or and loading mechanism
The elevating lever being connected.
3. high pressure sealing detection system according to claim 1, it is characterised in that: be provided with Sheng at the top of the plunger cavity
Oil groove, the internal diameter of oil holding slot are greater than the internal diameter of plunger cavity；It further includes plunger lubricating pipe that high pressure, which loads pipeline, the plunger lubrication management
The one end on road is connected with fuel tank, and the other end of plunger lubricating pipe is connected with oil holding slot.
4. high pressure sealing detection system according to claim 1, it is characterised in that: the load bar bottom and plunger head
Circular arc cooperation.
5. high pressure sealing detection system according to claim 4, it is characterised in that: high pressure loading device further includes backhaul bullet
Spring, retracting spring are sleeved on plunger bushing and the plunger of plunger head between the two.
6. high pressure sealing detection system according to claim 1, it is characterised in that: the plunger base end in plunger cavity
Deformable cavity is provided on face.
7. high pressure sealing detection system according to claim 6, it is characterised in that: the deformable cavity is annular in shape or tooth form is recessed
Cheat shape.
8. high pressure sealing detection system according to claim 1, it is characterised in that: outside the plunger base in plunger cavity
Sealing enhancing structure is provided on wall surface, which is several bulge loop bands or several annular grooves or several arcs
Groove.
9. high pressure sealing detection system according to claim 1, it is characterised in that: high pressure loading device proposes sealed test piece
The on-load pressure range of confession is 0-300MPa.
10. high pressure sealing detection system according to claim 1, it is characterised in that: axle power loading device is to sealed test piece
The load axle power range of offer is 0-300000N.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710938512.6A CN107702871B (en) | 2017-09-30 | 2017-09-30 | A kind of high pressure sealing detection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710938512.6A CN107702871B (en) | 2017-09-30 | 2017-09-30 | A kind of high pressure sealing detection system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107702871A CN107702871A (en) | 2018-02-16 |
| CN107702871B true CN107702871B (en) | 2019-08-16 |
Family
ID=61185036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710938512.6A Active CN107702871B (en) | 2017-09-30 | 2017-09-30 | A kind of high pressure sealing detection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107702871B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110987409B (en) * | 2019-12-31 | 2021-08-13 | 东风汽车集团有限公司 | Method for testing friction force of bowl-shaped plug |
| CN113977499B (en) * | 2021-12-23 | 2022-04-05 | 沈阳华天航空机械有限公司 | Cabin cover air tightness test clamp |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007035917B4 (en) * | 2007-07-30 | 2021-02-11 | BAM Bundesanstalt für Materialforschung und -prüfung | Test device for the simultaneous application of a disk-shaped test object with a test gas and mechanical load as well as the associated test method |
| GB2455645B (en) * | 2007-12-12 | 2009-11-11 | Mi Llc | High pressure screen flow-through testing device |
| CN100567927C (en) * | 2008-07-01 | 2009-12-09 | 徐州天地重型机械制造有限公司 | A kind of energy-saving hydraulic sealing experimental bench and method thereof |
| CN101446510B (en) * | 2008-12-23 | 2010-09-15 | 南京工业大学 | Multi-functional multi-specimen sealing gasket service life evaluation testing apparatus |
| US9297716B2 (en) * | 2009-11-30 | 2016-03-29 | Stats (Uk) Limited | Pipe end sealing tool |
| CN101793585B (en) * | 2010-04-04 | 2011-09-21 | 苏州宝骅机械技术有限公司 | Device and method for detecting sealing property of sealing element |
| CN204255618U (en) * | 2014-10-16 | 2015-04-08 | 中国海洋大学 | A kind of high back pressure sea water hydraulic friction-wear test platform |
-
2017
- 2017-09-30 CN CN201710938512.6A patent/CN107702871B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN107702871A (en) | 2018-02-16 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111024329B (en) | High-pressure rotation combined sealing element performance detection and test device and method | |
| CN107702871B (en) | A kind of high pressure sealing detection system | |
| CN102426142B (en) | Mechanics experiment system apparatus and experimental method for external pressure deformation of tubing | |
| CN201902549U (en) | Novel sealing structure for ultrahigh pressure vessel | |
| CN205384115U (en) | Pressure boost liquid pump in succession pressurizes | |
| CN104880368B (en) | The test method of multi-functional pressure differential High Pressure Hydrogen and material compatibility | |
| CN110793860A (en) | High-pressure hydrogen testing system and method | |
| CN112304595B (en) | Testing device capable of analyzing influence of O-shaped ring wire diameter on high-pressure sealing performance | |
| CN201636338U (en) | Check valve for large-caliber power plant | |
| CN204493982U (en) | Submarine pipeline clip repairs connector | |
| CN216955047U (en) | Online pressurization test device for parallel gate valve | |
| CN105332966A (en) | High pressure unloading valve for hydraulic driving hydrostatic test | |
| CN102879156A (en) | Sealing pressure test method for O-shaped seal rings and sealing device for O-shaped seal rings | |
| CN107576492B (en) | A kind of sealing ring non-destructive rated pressure detecting instrument | |
| CN209604341U (en) | A kind of pipe end hydrostatic testing machine booster | |
| CN202252312U (en) | Leakage-free combined packing assembly | |
| CN107763049A (en) | A kind of reactor pressure vessel hydraulic nut | |
| CN202381083U (en) | Pressure testing device of internal blowout preventing tool | |
| CN207437875U (en) | High-low pressure filling valve and hydraulic press | |
| CN204556177U (en) | Gas cylinder steam mixing pressure testing machine | |
| CN217560936U (en) | Safety interlock calibration device of quick-opening blind plate self-locking safety bolt | |
| CN210981656U (en) | Comprehensive leak detection sealed cabin | |
| CN114061851A (en) | Self-sealing metal sealing ring performance testing system and method | |
| CN207999500U (en) | A kind of combined sealing structure of compression test under super high container | |
| CN114689238A (en) | High-pressure self-cleaning table type hydraulic source |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |