CN115200807A - Oil tank leakage detection device - Google Patents
Oil tank leakage detection device Download PDFInfo
- Publication number
- CN115200807A CN115200807A CN202110385780.6A CN202110385780A CN115200807A CN 115200807 A CN115200807 A CN 115200807A CN 202110385780 A CN202110385780 A CN 202110385780A CN 115200807 A CN115200807 A CN 115200807A
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- Prior art keywords
- pressure
- testing unit
- valve
- direct
- fixedly communicated
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- 238000001514 detection method Methods 0.000 title abstract description 20
- 238000012360 testing method Methods 0.000 claims abstract description 75
- 239000002828 fuel tank Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 27
- 238000007654 immersion Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006837 decompression Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
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Classifications
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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
- G01M3/32—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 containers, e.g. radiators
- G01M3/3236—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 containers, e.g. radiators by monitoring the interior space of the containers
- G01M3/3263—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 containers, e.g. radiators by monitoring the interior space of the containers using a differential pressure detector
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Examining Or Testing Airtightness (AREA)
Abstract
The invention discloses an oil tank leakage detection device.A direct pressure test unit pipeline is communicated with one end of a pressure difference test unit, the direct pressure test unit comprises a pressure gauge, a pressure reducing valve and a main valve which are sequentially communicated from left to right through pipelines, and the pipeline at the left end of the direct pressure test unit is fixedly communicated with a tank body to be detected; the pressure difference testing unit comprises a switching valve and a pressure difference meter which are fixedly communicated with the branch pipeline from left to right, and the right end of the branch pipeline where the pressure difference testing unit is located is fixedly communicated with the standard container; the technical method adopted by the scheme is that the direct pressure testing unit and the differential pressure testing unit are uniformly combined in a set of testing system, and the direct pressure testing unit and the differential pressure testing unit are applied to each device in the direct pressure testing unit when differential pressure testing is carried out, so that the operation efficiency is improved, and the uniformity of accuracy and practicability is realized; the detection mode that the scheme adopted can be applied to the leak detection of all kinds of sealed containers, has extensive suitability.
Description
Technical Field
The invention relates to the technical field of detection devices, in particular to an oil tank leakage detection device.
Background
The tightness detection is a necessary testing process in the production of the oil tank, generally comprises a direct pressure type (bubble method, dipping method), a flow method, a pressure difference method, an inert gas method, a penetration imaging method, a brightness method and the like, and two commonly used methods are a direct pressure method test and a pressure difference method test; the direct method is to fill air with specified pressure into the box body, then close the air source, directly observe whether the box body has pressure drop to judge whether leakage exists, and find leakage points by matching with a bubble method or an immersion method, so that the direct method has the advantage of directly finding the leakage points; the differential pressure principle is that the tested oil tank and the standard oil tank are simultaneously inflated, the pressure of the standard container is taken as a reference, a differential pressure gauge is used for detecting that no differential pressure exists between the two oil tanks, leakage exists if the differential pressure exists, and the sensitivity of leakage detection by the differential pressure method is higher;
in the prior art, two methods are independently applied, the two methods have respective advantages and disadvantages, and the prior art lacks a device which integrates the advantages of the two testing methods together and can detect the leakage of various closed containers, so that the detection accuracy and the practicability cannot be integrated.
Disclosure of Invention
The present invention is directed to a fuel tank leakage detection device to solve the above problems.
In order to achieve the purpose, the invention provides the following technical scheme: a fuel tank leakage detection device comprises a tank body to be detected and a standard container, wherein a direct pressure test unit is fixedly communicated with the tank body to be detected, a pipeline of the direct pressure test unit is communicated with one end of a differential pressure test unit, and the other end of the differential pressure test unit is fixedly communicated with the standard container;
the direct pressure testing unit comprises a pressure gauge, a pressure reducing valve and a main valve which are sequentially communicated from left to right through pipelines, and the pipeline at the left end of the direct pressure testing unit is fixedly communicated with the box body to be tested;
the pressure difference testing unit is arranged on a branch pipeline of the direct pressure testing unit and comprises a switching valve and a pressure difference meter which are fixedly communicated with the branch pipeline from left to right, and the right end of the branch pipeline where the pressure difference testing unit is located is fixedly communicated with the standard container.
Preferably, a four-way pipe fitting is arranged at the intersection of the direct pressure testing unit, the differential pressure testing unit and the pipeline where the box body to be tested is located.
Preferably, the reserved end of the four-way pipe fitting is fixedly communicated with a release valve.
Preferably, a stop valve is fixedly communicated with a pipeline between the pressure gauge and the pressure reducing valve.
Preferably, the two ends of the differential pressure gauge are connected with a differential pressure valve in parallel.
Compared with the prior art, this scheme has designed an oil tank leakage detection device, has following beneficial effect:
(1) The technical method adopted by the scheme combines the direct pressure testing unit and the differential pressure testing unit in a set of testing system in a unified manner, and the direct pressure testing unit and the differential pressure testing unit are applied to all devices in the direct pressure testing unit when differential pressure testing is carried out, so that the operation efficiency is improved, and the unification of accuracy and practicability is realized.
(2) The detection mode that the scheme adopted can be applied to the leak detection of all kinds of sealed containers, has extensive suitability.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
In the figure: the device comprises a main valve 1, a pressure reducing valve 2, a stop valve 3, a pressure gauge 4, a vent valve 5, a differential pressure gauge 6, a differential pressure valve 7, a switching valve 8, a standard container 9 and a box body to be tested 10.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, the present invention provides a technical solution: the utility model provides an oil tank leakage detection device, includes box 10 and the standard container 9 that awaits measuring, its characterized in that: the box body to be tested 10 is fixedly communicated with a direct pressure testing unit, the direct pressure testing unit is communicated with one end of a differential pressure testing unit through a pipeline, and the other end of the differential pressure testing unit is fixedly communicated with the standard container 9.
The direct pressure testing unit and the differential pressure testing unit are combined in one set of testing system in a unified mode, and the device is applied to each device in the direct pressure testing unit when differential pressure testing is conducted, so that the operation efficiency is improved, and the unification of accuracy and practicability is achieved.
The direct pressure testing unit comprises a pressure gauge 4, a pressure reducing valve 2 and a main valve 1 which are sequentially communicated from left to right through pipelines, and the pipeline at the left end of the direct pressure testing unit is fixedly communicated with the box body 10 to be tested; the main valve 1 is used for supplying an air source, and the air source is decompressed by the decompression valve 2 and then is supplied to the direct pressure testing unit and the differential pressure testing unit.
The differential pressure test unit is arranged on a branch pipeline of the direct pressure test unit, the differential pressure test unit comprises a switching valve 8 and a differential pressure gauge 6 which are fixedly communicated on the branch pipeline from left to right, and the right end of the branch pipeline where the differential pressure test unit is located is fixedly communicated on a standard container 9.
The switching valve 8 is used for switching between a direct pressure method test and a differential pressure method test, and when the differential pressure method test is required, the switching valve 8 is opened.
A four-way pipe fitting is arranged at the intersection of the direct pressure testing unit, the differential pressure testing unit and the pipeline where the box body 10 to be tested is located; the reserved end of the four-way pipe is fixedly communicated with a release valve 5, the four-way pipe is connected with the release valve 5, the direct pressure testing unit, the differential pressure testing unit and the box body 10 to be tested, and the release valve 5 is opened to exhaust the air pressure in the device after the detection is finished; a stop valve 3 is fixedly communicated with a pipeline between the pressure gauge 4 and the pressure reducing valve 2; stop valve 3 is in the closed condition in the testing process, and the effect prevents that relief pressure valve 2 gas leakage from influencing the detection precision.
Two ends of the differential pressure gauge 6 are connected with a differential pressure valve 7 in parallel, and the differential pressure valve 7 is used for controlling whether the differential pressure gauge 6 is connected to a branch pipeline where the differential pressure test unit is located or not, so that the differential pressure valve 7 is in an open state when the differential pressure gauge 6 is not detected due to damage caused by overlarge differential pressure.
The use process comprises the following steps:
(1) Receiving a box body 10 to be tested, confirming that the air release valve 5, the stop valve 3 and the main valve 1 are all in a closed state, and when testing by adopting a differential pressure method, opening the switching valve 8 and confirming that the differential pressure valve 7 is in an open state;
(2) Connecting an air source into a main valve 1, opening the main valve 1, and adjusting a pressure reducing valve 2 to a required pressure if the indication of a pressure gauge 4 is in accordance with the specified pressure;
(3) Opening the stop valve 3 to start simultaneously inflating the box body 10 to be detected and the standard container 9, observing the pressure gauge 4, closing the main valve 1 after the pressure reaches the detection pressure, and then closing the stop valve 3;
(4) At the moment, the switching valve 8 is in an open state, the pressure of the box body 10 to be measured is the same as that of the standard container 9, and the pressure difference meter 6 has no pressure difference indication; during detection, the pressure difference valve 7 is closed, the passage of the two boxes is cut off, if the box 10 to be detected leaks, the pressure of the box is slightly reduced, the pressure of the standard container is unchanged, and therefore the pressure difference meter 6 displays the pressure difference.
(5) When the direct method test is carried out, the switching valve 8 is closed, the standard container 10 and the pressure difference meter 6 do not work, only the box body 10 to be tested is inflated, the stop valve 3 of the main valve 1 is closed, and whether the pressure meter 4 is depressurized or not is directly observed to judge whether leakage exists or not; and judging the position of the leakage point by matching with a bubble method and an immersion method.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (5)
1. The utility model provides an oil tank leak testing device, includes box (10) and standard container (9) that await measuring, its characterized in that: a direct pressure testing unit is fixedly communicated with the box body (10) to be tested, a pipeline of the direct pressure testing unit is communicated with one end of a differential pressure testing unit, and the other end of the differential pressure testing unit is fixedly communicated with a standard container (9);
the direct pressure testing unit comprises a pressure gauge (4), a pressure reducing valve (2) and a main valve (1) which are sequentially communicated from left to right through pipelines, and the pipeline at the left end of the direct pressure testing unit is fixedly communicated with a box body (10) to be tested;
the pressure difference testing unit is arranged on a branch pipeline of the direct pressure testing unit and comprises a switching valve (8) and a pressure difference meter (6) which are fixedly communicated with the branch pipeline from left to right, and the right end of the branch pipeline where the pressure difference testing unit is located is fixedly communicated with a standard container (9).
2. A fuel tank leakage detecting device according to claim 1, wherein: and a four-way pipe fitting is arranged at the intersection of the direct pressure testing unit, the differential pressure testing unit and the pipeline where the box body (10) to be tested is located.
3. A fuel tank leakage detecting device according to claim 2, wherein: the reserved end of the four-way pipe fitting is fixedly communicated with a release valve (5).
4. A fuel tank leakage detecting device according to claim 1, wherein: and a stop valve (3) is fixedly communicated on a pipeline between the pressure gauge (4) and the pressure reducing valve (2).
5. A fuel tank leakage detecting device according to claim 1, wherein: and two ends of the differential pressure gauge (6) are connected with a differential pressure valve (7) in parallel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110385780.6A CN115200807A (en) | 2021-04-11 | 2021-04-11 | Oil tank leakage detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110385780.6A CN115200807A (en) | 2021-04-11 | 2021-04-11 | Oil tank leakage detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115200807A true CN115200807A (en) | 2022-10-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110385780.6A Pending CN115200807A (en) | 2021-04-11 | 2021-04-11 | Oil tank leakage detection device |
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| Country | Link |
|---|---|
| CN (1) | CN115200807A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087337U (en) * | 1991-01-17 | 1991-10-23 | 中国科学院合肥智能机械研究所高技术开发公司 | Micro-leakage measuring instrument |
| CN111855106A (en) * | 2020-08-28 | 2020-10-30 | 唐山贺祥智能科技股份有限公司 | Closestool sealing performance detection equipment |
| CN214893929U (en) * | 2021-04-11 | 2021-11-26 | 大连小松雄连机械制造有限公司 | Oil tank leakage detection device |
-
2021
- 2021-04-11 CN CN202110385780.6A patent/CN115200807A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2087337U (en) * | 1991-01-17 | 1991-10-23 | 中国科学院合肥智能机械研究所高技术开发公司 | Micro-leakage measuring instrument |
| CN111855106A (en) * | 2020-08-28 | 2020-10-30 | 唐山贺祥智能科技股份有限公司 | Closestool sealing performance detection equipment |
| CN214893929U (en) * | 2021-04-11 | 2021-11-26 | 大连小松雄连机械制造有限公司 | Oil tank leakage detection device |
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