CN113532751A - Outboard engine underwater shell leakage detection structure, waterproof device and sealing performance detection method - Google Patents
Outboard engine underwater shell leakage detection structure, waterproof device and sealing performance detection method Download PDFInfo
- Publication number
- CN113532751A CN113532751A CN202110993170.4A CN202110993170A CN113532751A CN 113532751 A CN113532751 A CN 113532751A CN 202110993170 A CN202110993170 A CN 202110993170A CN 113532751 A CN113532751 A CN 113532751A
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- China
- Prior art keywords
- underwater
- outboard engine
- shell
- detection structure
- leakage
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16J—PISTONS; CYLINDERS; SEALINGS
- F16J15/00—Sealings
- F16J15/02—Sealings between relatively-stationary surfaces
- F16J15/06—Sealings between relatively-stationary surfaces with solid packing compressed between sealing surfaces
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Gasket Seals (AREA)
Abstract
The invention discloses a leakage detection structure, a waterproof device and a tightness detection method for an outboard engine underwater shell. The waterproof device comprises a sealing gasket and a screw plug, a stud of the screw plug penetrates through the sealing gasket and is matched with the internal thread of the leakage detection structure, and the sealing gasket is arranged between a screw cap of the screw plug and the underwater shell. Compressed air is filled into the underwater shell through the underwater shell leakage detection structure, and then the underwater shell is placed in water to check whether the underwater shell has an air leakage phenomenon; and after the inspection is finished, the inflating device is detached, and the leakage detecting structure is blocked by a waterproof device. The outboard engine underwater shell leakage detection structure adopts the threaded through hole, the sealing performance is detected after compressed air is filled in the threaded through hole, the leakage detection structure is blocked by the waterproof device after the test is finished, the test and waterproof device are integrated in the shell and are not exposed, resistance loss caused by exposure is avoided, and the appearance and the practicability are both considered.
Description
Technical Field
The invention relates to an outboard engine, in particular to a leak detection structure, a waterproof device and a sealing performance detection method for an underwater shell of the outboard engine.
Background
Because the motor and the motor controller of the outboard engine are sealed in the underwater shell, and the underwater shell is completely submerged in water when the outboard engine runs, if water leakage occurs, a circuit is short-circuited, and the motor and the control circuit are damaged. Therefore, the sealing performance of the underwater shell is very important and is also a key design influencing the service life of the whole machine.
In order to ensure that the underwater shell has reliable sealing performance when in use, a sealing performance detection structure needs to be designed on the underwater shell, and the detection structure is blocked by a reliable waterproof device after detection is finished. There is currently no relevant prior art in the art.
Disclosure of Invention
The invention aims to: provided are a outboard engine underwater shell leakage detection structure, a waterproof device and a sealing performance detection method.
The technical scheme of the invention is as follows:
the outboard engine underwater shell leakage detection structure is a threaded through hole, is arranged on an underwater shell of an outboard engine, and is used for inflating the underwater shell so as to detect the sealing performance of the underwater shell.
Preferably, the threaded through hole is formed in a side wall of the underwater housing.
Preferably, the outer end part of the threaded through hole of the side wall of the underwater shell is provided with a nut groove.
Preferably, the leakage detection structure is an M8 threaded through hole.
Preferably, the underwater housing is assembled without parts inside the side wall where the leak detection structure is arranged.
The waterproof device of the outboard engine underwater shell leakage detection structure comprises a sealing gasket and a screw plug, wherein a stud of the screw plug penetrates through the sealing gasket and is matched with an internal thread of the leakage detection structure, and the sealing gasket is arranged between a screw cap of the screw plug and the underwater shell.
Preferably, the sealing gasket is a red steel paper gasket.
Preferably, the screw plug is a stainless steel screw plug.
The method for detecting the sealing performance of the outboard engine underwater shell comprises the following steps:
compressed air is filled into the underwater shell through the underwater shell leakage detection structure by adopting an air charging device;
then, completely placing the underwater shell in water, and checking whether the underwater shell has an air leakage phenomenon;
and after the inspection is finished, the inflating device is detached, and the leakage detecting structure is blocked by a waterproof device.
Preferably, the pressure of the compressed air is not less than 0.15 Mpa.
The invention has the advantages that:
the outboard engine underwater shell leakage detection structure adopts the threaded through hole, the sealing performance is detected after compressed air is filled in the threaded through hole, the leakage detection structure is blocked by the waterproof device after the test is finished, the test and waterproof device are integrated in the shell and are not exposed, resistance loss caused by exposure is avoided, and the appearance and the practicability are both considered.
Drawings
The invention is further described with reference to the following figures and examples:
FIG. 1 is a schematic view of an outboard engine underwater housing provided with a leak detection structure;
FIG. 2 is a schematic view of a leak detection structure coupled to an inflation fitting of an inflator;
FIG. 3 is a cross-sectional view of the gasket;
FIG. 4 is a cross-sectional view of the plug screw;
fig. 5 is a schematic view of a leak detection structure equipped with a waterproof device.
Detailed Description
As shown in fig. 1, the leak detection structure 2 of the outboard engine underwater case 1 of the present invention is a threaded through hole M8, and is disposed on a side wall of the outboard engine underwater case 1, and is used for inflating the underwater case with an inflator, thereby detecting the sealing property of the underwater case. The underwater shell is assembled without parts in the side wall where the leakage detection structure is arranged. And the outer end part of the threaded through hole on the side wall of the underwater shell is provided with a nut groove.
After each part equipment in outboard engine underwater case 1 is accomplished, detect the leakproofness of casing 1 under water, include:
(1) an inflation device is adopted to connect an inflation connector 3 with a leakage detection structure 2 of the underwater shell 1, and compressed air of 0.2 Mpa is inflated into the underwater shell 1 through the leakage detection structure 2;
(2) then, completely placing the underwater shell in water, and checking whether the underwater shell has an air leakage phenomenon;
(3) and after the inspection is finished, the inflation connector 3 of the inflation device is removed, and the leakage detection structure is blocked by a waterproof device.
The waterproof device of the outboard engine underwater shell leakage detection structure comprises a sealing gasket 4 and a screw plug 5 which are respectively shown in figures 3 and 4. The sealing gasket 4 is made of red steel paper, and the plug screw 5 is made of stainless steel plug screw.
As shown in fig. 5, after the gas-filled joint 3 is removed, the leak detecting structure 2 is sealed with a gasket 4 and a plug screw 5. The double-screw bolt of plug screw 5 passes sealed 4, with the interior screw-thread fit of structure 2 that leaks hunting, sealed 4 of filling up arrange in between 5's of plug screw nut and the casing 1 under water, the nut is arranged in the nut inslot, and seal structure integration is on the casing and not exposed, avoids exposing the resistance loss who produces, has compromise outward appearance and practicality.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.
Claims (10)
1. The outboard engine underwater shell leakage detection structure is characterized in that the leakage detection structure is a threaded through hole, is arranged on an underwater shell of an outboard engine and is used for inflating the underwater shell so as to detect the tightness of the outboard engine underwater shell.
2. The outboard engine underwater case leakage detecting structure according to claim 1, wherein the screw through hole is provided on a side wall of the underwater case.
3. The outboard engine underwater case leakage detecting structure according to claim 2, wherein the side wall of the underwater case is provided with a nut groove at an outer end portion of the threaded through hole.
4. The outboard engine underwater case leakage detecting structure of claim 1, wherein said leakage detecting structure is an M8 threaded through hole.
5. The outboard engine underwater case leakage detecting structure of claim 3, wherein the underwater case is assembled without a part inside a side wall where the leakage detecting structure is provided.
6. The waterproof device for the leak detection structure of the underwater casing of the outboard engine as claimed in any one of claims 1 to 5, comprising a gasket and a plug screw, wherein a stud of the plug screw penetrates through the gasket and is fitted with the internal thread of the leak detection structure, and the gasket is interposed between a nut of the plug screw and the underwater casing.
7. The water-proofing device of the outboard engine underwater case leakage detecting structure according to claim 6, wherein the sealing gasket is a red steel paper gasket.
8. The water-proofing device of the outboard engine underwater case leakage detecting structure according to claim 6, wherein the screw plug is a stainless steel screw plug.
9. The method for detecting the sealing performance of the outboard engine underwater shell is characterized by comprising the following steps:
compressed air is filled into the underwater shell through the underwater shell leakage detection structure by adopting an air charging device;
then, completely placing the underwater shell in water, and checking whether the underwater shell has an air leakage phenomenon;
and after the inspection is finished, the inflating device is detached, and the leakage detecting structure is blocked by a waterproof device.
10. The method of claim 9, wherein the pressure of the compressed air is not less than 0.15 Mpa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993170.4A CN113532751A (en) | 2021-08-27 | 2021-08-27 | Outboard engine underwater shell leakage detection structure, waterproof device and sealing performance detection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110993170.4A CN113532751A (en) | 2021-08-27 | 2021-08-27 | Outboard engine underwater shell leakage detection structure, waterproof device and sealing performance detection method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113532751A true CN113532751A (en) | 2021-10-22 |
Family
ID=78093021
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110993170.4A Pending CN113532751A (en) | 2021-08-27 | 2021-08-27 | Outboard engine underwater shell leakage detection structure, waterproof device and sealing performance detection method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113532751A (en) |
-
2021
- 2021-08-27 CN CN202110993170.4A patent/CN113532751A/en active Pending
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