CN109990958A - A kind of marine rear shaft sealing vacuum tester - Google Patents
A kind of marine rear shaft sealing vacuum tester Download PDFInfo
- Publication number
- CN109990958A CN109990958A CN201910288005.1A CN201910288005A CN109990958A CN 109990958 A CN109990958 A CN 109990958A CN 201910288005 A CN201910288005 A CN 201910288005A CN 109990958 A CN109990958 A CN 109990958A
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- China
- Prior art keywords
- vacuum
- interface
- tester
- threeway ontology
- rear shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M3/00—Investigating fluid-tightness of structures
- G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
- G01M3/26—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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses a kind of marine rear shafts to seal vacuum tester, the screw shaft of ship sealing multiple connectors of connection corresponding with each seal chamber including multiple seal chambers and respectively, the vacuum tester includes threeway ontology, the first interface of the threeway ontology is connected to the connector, the second interface of threeway ontology is connect with vacuum degree instruction device, and the third interface of threeway ontology is connected to the vacuum interface of vacuum evacuation device；Pipeline between the intersection point and third interface of the threeway ontology is equipped with valve body.Screw shaft of ship sealing vacuum tester structure of the invention is simple, easy to use, observation is intuitive, the leakproofness of all seal chambers without frequently dismounting and can detecte stern shaft seal gland, and reduce the subsequent processing work after examining, improve the reliability of checkability and inspection.
Description
Technical field
The present invention relates to screw shaft of ship to seal inspection technical field, and in particular to a kind of marine rear shaft sealing vacuum tester.
Background technique
Screw shaft of ship is the connecting shaft between propeller and engine, and engine drives propeller to turn by screw shaft of ship
Dynamic, the axial thrust that propeller rotation generates passes to hull again, and then ship is pushed to advance.For prevent seawater along stern tube shaft into
Enter in ship or prevent from draining to outboard outside in-engine lubricating oil, needs that stern shaft seal gland is arranged on screw shaft of ship.
Existing screw shaft of ship sealing includes several seal chambers, and connector, Xiang Mi are provided on each seal chamber
Seal the intracavitary sealing for being passed through lubricating oil or air, realizing to marine rear shaft.To guarantee to work normally after stern tube shaft is installed, need
It tests to the leakproofness of stern shaft seal, stern shaft seal is unqualified when testing again after avoiding component from being all installed in place, so
It carries out component disassembly again afterwards, causes a large amount of manpower and material resources and waste of time.
Currently, the both ends of sealing device, sealing plate and outermost are blocked generally by sealing plate to the inspection of tail stalk seal
Sealing element seal chamber is collectively formed, then injected by connector into seal chamber water method check this road sealing sealing
Property, still, this inspection method has two, first is that the sealing formed between sealing plate and outermost side seal can only be checked
The leakage check of chamber can not check the close implementations of remaining a few road sealing, second is that needing frequently to dismount envelope when checking leakproofness
Plate, screw rod, rubber, process is comparatively laborious, and rubber consumption is larger；Meanwhile carrying out testing leakage by observing hydraulic pressure, sealing element is examined
It also carries out draining and handling the steam on sealing element after the completion, increases inspection process, to reduce inspection effect
Rate.
Summary of the invention
It is an object of the present invention to overcome defect existing in the prior art, provide a kind of structure it is simple, it is easy to use,
The marine rear shaft sealing of the leakproofness of intuitive, without frequently dismounting and can detecte stern shaft seal gland all seal chambers of observation
Vacuum tester.
To achieve the above object, the technical scheme is to design a kind of marine rear shafts to seal vacuum tester, described
Screw shaft of ship sealing multiple connectors of connection corresponding with each seal chamber, vacuum test including multiple seal chambers and respectively
Device includes threeway ontology, and the first interface of the threeway ontology is connected to the connector, the second interface of threeway ontology and true
The connection of reciprocal of duty cycle instruction device, the third interface of threeway ontology are connected to the vacuum interface of vacuum evacuation device；The threeway ontology
Pipeline between intersection point and third interface is equipped with valve body.In use, the compression that vacuum tester is exported by air compressor
Gas flow flows through vacuum evacuation device, gradually by the evacuating air in seal chamber, makes to reach in seal chamber certain vacuum degree, closes
Valve closing body, the air circulation truncation between threeway ontology and vacuum evacuation device, then observation in real time passes through threeway sheet with seal chamber
The numerical value of the vacuum degree instruction device of body connection, it is when the reading of vacuum degree instruction device changes within a certain period of time, then close
There are problems for the leakproofness of envelope chamber；When the reading of vacuum degree instruction device in certain time does not change, then seal chamber is close
Sealing property is good.Screw shaft of ship sealing vacuum tester of the invention is easy to use, and observation is intuitive, is able to detect each seal chamber
Leakproofness, and reduce examine after subsequent processing work, improve the reliability of checkability and inspection.
Preferred technical solution is that the vacuum means are set to vacuum generator.Vacuum evacuation device vacuumizes high-efficient, speed
Degree is fast, but general volume is larger, inconvenient for use in erecting bed, using vacuum generator as the device vacuumized, not
It uses and is more convenient when the case where needing relatively large vacuum to spend, and large-scale vacuum evacuation device is replaced using vacuum generator, examine vacuum
It is small and exquisite, light to test device, portable, easy for installation, wide adaptability.
Further preferred technical solution is that the valve body is Solenoid ball valve.Solenoid ball valve is set, can be realized ball valve
It opens and closes automatically, reduces manual operation.
Further preferred technical solution is that the vacuum degree instruction device is vacuum pressure sensor, the vacuum pressure
Force snesor, Solenoid ball valve, vacuum generator are electrically connected with PLC controller respectively, and the PLC controller connects to power supply.Very
Pneumatics force snesor, Solenoid ball valve, vacuum generator are connect with PLC controller respectively, when vacuum pressure sensor senses three
When vacuum degree reaches PLC controller preset value in logical ontology, PLC controller controls Solenoid ball valve and closes, and controls vacuum
Generator is out of service, realizes the automatic detection of vacuum tester, reduces manual operation, keeps verifier operation more convenient.
Further preferred technical solution is to be additionally provided between the PLC controller and vacuum pressure sensor and pass through electricity
The time-delay relay of road connection.PLC controller control Solenoid ball valve is first closed, and PLC controller controls time-delay relay delay one
After the section time, vacuum generator is out of service, and the time out of service of vacuum generator and the shut-in time of Solenoid ball valve have
Certain time is poor, can further guarantee the vacustat of threeway body interior.
Further preferred technical solution is that finger is additionally provided on the circuit that the PLC controller is connect with Solenoid ball valve
Show lamp.Solenoid ball valve is opened, and when vacuum generator continues working, indicator light is displayed in red, when vacuum pressure sensor senses
When vacuum degree reaches PLC controller preset value in threeway ontology, PLC controller controls Solenoid ball valve and closes, and vacuum occurs
Device is out of service, and indicator light display green keeps the inspection result of the vacuum tester more intuitive.
Easy to carry and use in order to reduce the size and volume of vacuum tester, further preferred technical solution is,
The power supply is rechargeable battery.Rechargeable battery, it is small in size, it is easy to carry, the overall dimensions of vacuum tester can be effectively reduced
Size.
The advantages and beneficial effects of the present invention are: the vacuum tester has, structure is simple, easy to use, observation is straight
See, without frequently dismounting and can detecte all seal chambers of stern shaft seal gland the characteristics of.Vacuum tester passes through air pressure
The compressed gas air-flow of contracting machine output flows through vacuum evacuation device, gradually by the evacuating air in seal chamber, makes to reach in seal chamber
Certain vacuum degree, valve body, between threeway ontology and vacuum evacuation device air circulation truncation, then in real time observation with it is close
The numerical value for the vacuum degree instruction device that envelope chamber is connected to by threeway ontology, screw shaft of ship sealing vacuum tester of the invention use
Convenient, observation is intuitive, is able to detect the leakproofness of each seal chamber, and reduces the subsequent processing work after examining, and improves
The reliability of checkability and inspection；Using vacuum generator as the device vacuumized, relatively large vacuum degree is not being needed
It uses and is more convenient when situation, and large-scale vacuum evacuation device is replaced using vacuum generator, keep vacuum tester small and exquisite, light, easily
It carries, easy for installation, wide adaptability；Solenoid ball valve is set, can be realized opening and closing automatically for ball valve, reduces artificial behaviour
Make；Vacuum pressure sensor, Solenoid ball valve, vacuum generator are connect with PLC controller respectively, when vacuum pressure sensor incudes
When vacuum degree reaches PLC controller preset value in threeway ontology, PLC controller controls Solenoid ball valve and closes, and controls
Vacuum generator is out of service, realizes the automatic detection of vacuum tester, reduces manual operation, makes verifier operation more just
It is prompt；Delay circuit closes PLC controller control Solenoid ball valve first, and it is out of service to control vacuum generator after a period of time again,
The time out of service of vacuum generator and the shut-in time of Solenoid ball valve have certain time poor, can further guarantee
The vacustat of threeway body interior；Indicator light is set, keeps the inspection result of the vacuum tester more intuitive.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of 1 marine rear shaft of embodiment of the present invention sealing vacuum tester；
Fig. 2 is the structural schematic diagram of 1 marine rear shaft of embodiment of the present invention sealing vacuum tester.
In figure: 1, first interface；2, second interface；3, pressure vacuum gauge；4, third interface；5, vacuum generator；6, ball
Valve；7, vacuum pressure sensor；8, Solenoid ball valve；9, PLC controller；10, power supply；11, indicator light.
Specific embodiment
With reference to the accompanying drawings and examples, further description of the specific embodiments of the present invention.Following embodiment is only
For clearly illustrating technical solution of the present invention, and not intended to limit the protection scope of the present invention.
Embodiment 1
As shown in Figure 1, the present invention is a kind of marine rear shaft sealing vacuum tester, the screw shaft of ship sealing includes multiple
Seal chamber and respectively multiple connectors of connection corresponding with each seal chamber, the vacuum tester includes threeway ontology, described
The first interface 1 of threeway ontology is connected to the connector, and the second interface 2 of threeway ontology is connect with pressure vacuum gauge 3, threeway
The third interface 4 of ontology is connected to the vacuum interface of vacuum generator 5；Between the intersection point and third interface of the threeway ontology
Pipeline is equipped with ball valve 6.
Embodiment 2
As shown in Fig. 2, the present invention is a kind of marine rear shaft sealing vacuum tester, the screw shaft of ship sealing includes multiple
Seal chamber and respectively multiple connectors of connection corresponding with each seal chamber, the vacuum tester includes threeway ontology, described
The first interface 1 of threeway ontology is connected to the connector, and the second interface 2 of threeway ontology is connect with vacuum pressure sensor 7,
The third interface 4 of threeway ontology is connected to the vacuum interface of vacuum generator 5；The intersection point of the threeway ontology and third interface it
Between pipeline be equipped with Solenoid ball valve 8.The vacuum pressure sensor, Solenoid ball valve, vacuum generator respectively with PLC controller
9 electrical connections, the PLC controller are connect with power supply 10.It is additionally provided on the circuit that the PLC controller is connect with Solenoid ball valve
Indicator light 11.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications can also be made, these improvements and modifications
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of marine rear shaft seals vacuum tester, the screw shaft of ship sealing include multiple seal chambers and respectively with it is each close
Seal multiple connectors of the corresponding connection of chamber, which is characterized in that the vacuum tester includes threeway ontology, the threeway ontology
First interface is connected to the connector, and the second interface of threeway ontology is connect with vacuum degree instruction device, and the of threeway ontology
Three interfaces are connected to the vacuum interface of vacuum evacuation device；Pipeline between the intersection point and third interface of the threeway ontology is equipped with
Valve body.
2. marine rear shaft according to claim 1 seals vacuum tester, which is characterized in that the vacuum means are set to very
Empty generator.
3. marine rear shaft according to claim 2 seals vacuum tester, which is characterized in that the valve body is electromagnetic ball
Valve.
4. marine rear shaft according to claim 3 seals vacuum tester, which is characterized in that the vacuum degree instruction device
For vacuum pressure sensor, the vacuum pressure sensor, Solenoid ball valve, vacuum generator are electrically connected with PLC controller respectively,
The PLC controller connects to power supply.
5. marine rear shaft according to claim 4 seals vacuum tester, which is characterized in that the PLC controller and true
The time-delay relay by circuit connection is additionally provided between pneumatics force snesor.
6. marine rear shaft according to claim 5 seals vacuum tester, which is characterized in that the PLC controller with
Indicator light is additionally provided on the circuit of Solenoid ball valve connection.
7. sealing vacuum testers according to the described in any item marine rear shafts of claim 4-6, which is characterized in that the power supply is
Rechargeable battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910288005.1A CN109990958A (en) | 2019-04-11 | 2019-04-11 | A kind of marine rear shaft sealing vacuum tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910288005.1A CN109990958A (en) | 2019-04-11 | 2019-04-11 | A kind of marine rear shaft sealing vacuum tester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109990958A true CN109990958A (en) | 2019-07-09 |
Family
ID=67133229
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910288005.1A Pending CN109990958A (en) | 2019-04-11 | 2019-04-11 | A kind of marine rear shaft sealing vacuum tester |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109990958A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354072A (en) * | 2022-01-05 | 2022-04-15 | 大连海洋大学 | Ship tail shaft sealing vacuum tester |
Citations (9)
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|---|---|---|---|---|
| KR20110054155A (en) * | 2009-11-17 | 2011-05-25 | 주식회사 화승알앤에이 | Apparatus for controlling pressure of stern tube lip seal of a ship |
| CN202057458U (en) * | 2011-04-08 | 2011-11-30 | 上海江南长兴造船有限责任公司 | Verifying device for tightness and intensity of ship tail shaft cooling water cabin |
| KR20120122366A (en) * | 2011-04-29 | 2012-11-07 | 현대중공업 주식회사 | Testing apparatus for oil leakage in stern tube seal using air |
| CN203585339U (en) * | 2013-11-08 | 2014-05-07 | 江苏海事职业技术学院 | Ship tail shaft sealing device |
| CN204758235U (en) * | 2015-06-09 | 2015-11-11 | 中船澄西船舶（广州）有限公司 | Boats and ships stern shaft seal pressure testing device |
| CN106404615A (en) * | 2016-08-30 | 2017-02-15 | 广州文冲船厂有限责任公司 | Ship tail shaft shaft-seal, lubricating, and sealing condition monitoring system |
| CN108489675A (en) * | 2017-12-11 | 2018-09-04 | 渤海造船厂集团有限公司 | A kind of stern shaft seal gland leakage test method |
| CN108871700A (en) * | 2018-06-15 | 2018-11-23 | 青岛造船厂有限公司 | A kind of screw shaft of ship inspection of hermetic seal device |
| CN209992129U (en) * | 2019-04-11 | 2020-01-24 | 中船澄西船舶修造有限公司 | Ship stern shaft sealing vacuum tester |
-
2019
- 2019-04-11 CN CN201910288005.1A patent/CN109990958A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20110054155A (en) * | 2009-11-17 | 2011-05-25 | 주식회사 화승알앤에이 | Apparatus for controlling pressure of stern tube lip seal of a ship |
| CN202057458U (en) * | 2011-04-08 | 2011-11-30 | 上海江南长兴造船有限责任公司 | Verifying device for tightness and intensity of ship tail shaft cooling water cabin |
| KR20120122366A (en) * | 2011-04-29 | 2012-11-07 | 현대중공업 주식회사 | Testing apparatus for oil leakage in stern tube seal using air |
| CN203585339U (en) * | 2013-11-08 | 2014-05-07 | 江苏海事职业技术学院 | Ship tail shaft sealing device |
| CN204758235U (en) * | 2015-06-09 | 2015-11-11 | 中船澄西船舶（广州）有限公司 | Boats and ships stern shaft seal pressure testing device |
| CN106404615A (en) * | 2016-08-30 | 2017-02-15 | 广州文冲船厂有限责任公司 | Ship tail shaft shaft-seal, lubricating, and sealing condition monitoring system |
| CN108489675A (en) * | 2017-12-11 | 2018-09-04 | 渤海造船厂集团有限公司 | A kind of stern shaft seal gland leakage test method |
| CN108871700A (en) * | 2018-06-15 | 2018-11-23 | 青岛造船厂有限公司 | A kind of screw shaft of ship inspection of hermetic seal device |
| CN209992129U (en) * | 2019-04-11 | 2020-01-24 | 中船澄西船舶修造有限公司 | Ship stern shaft sealing vacuum tester |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114354072A (en) * | 2022-01-05 | 2022-04-15 | 大连海洋大学 | Ship tail shaft sealing vacuum tester |
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