CN205102990U - Flow automatic test system suitable for low pressure condition - Google Patents
Flow automatic test system suitable for low pressure condition Download PDFInfo
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- CN205102990U CN205102990U CN201520845324.5U CN201520845324U CN205102990U CN 205102990 U CN205102990 U CN 205102990U CN 201520845324 U CN201520845324 U CN 201520845324U CN 205102990 U CN205102990 U CN 205102990U
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Abstract
The utility model relates to a flow automatic test system suitable for low pressure condition, this test system include the leak test platform, is tested the flow of piece through the low flow resistance under the leak test pair of stations low pressure condition and is tested, the test system still include external pressure table and adjustable damping valve, low flow resistance is tested an interface and is connected gradually the one end of external pressure table and adjustable damping valve through connecting pipe, the other end of adjustable damping valve passes through the interface connection of connecting pipe and leak test platform. Compared with the prior art, the utility model has the advantages of degree of automation is high, measuring error is little, efficiency of software testing is high.
Description
Technical field
The utility model relates to a kind of flow testing system, especially relates to a kind of flow Auto-Test System being applicable to lower pressure.
Background technology
Along with the progress of science and technology, automaticity and the measuring accuracy of testing apparatus are more and more higher, test also more convenient.Common testing apparatus is because affecting by the factor such as cost and technology, and test error is large, efficiency is low.But ATE (automatic test equipment) may exist not meeting of test condition equally, as occurred in area of low pressure, equipment does not run self-locking situation.
Chinese patent CN203604085U discloses a kind of engine low pressure oil way test macro.On the gear-type pump that described test macro is connected to engine by fuel tank, the first valve, strainer filter, the second valve, fine filter by pipeline and high pressure co-rail system, described pipeline is provided with the sensor gathering oil circuit pressure, flow, temperature and granule number, and described sensor is connected with the input end of controller.As shown from the above technical solution, this test macro in engine low pressure oil way system sensor installation to gather the granule number signal of the pressure of oil circuit, flow, temperature and filter cleaner oil inlet and outlet, and by signal transmission to controller, controller carries out Treatment Analysis again, whole process completes automatically, without the need to manually reading and recording data.But above-mentioned test macro does not give full play to the function of automated test device, also do not solve in area of low pressure very well, the problem that automated test device self-locking does not run simultaneously.
Utility model content
The purpose of this utility model be exactly in order to overcome above-mentioned prior art exist defect and the flow Auto-Test System being applicable to lower pressure that a kind of automaticity is high, measuring error is little, testing efficiency is high is provided.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of flow Auto-Test System being applicable to lower pressure, this test macro comprises Leak Off Test (LOT) platform, tested by the flow of Leak Off Test (LOT) platform to the low flow resistance test specimen under lower pressure, described test macro also comprises external pressure table and adjustable damper valve, described low flow resistance test specimen interface connects one end of external pressure table and adjustable damper valve successively by connecting tracheae, the other end of adjustable damper valve is connected with the interface of Leak Off Test (LOT) platform by connecting tracheae.
Described Leak Off Test (LOT) platform inside is provided with the built-in tensimeter that interconnecting tube is linked in sequence, built-in flow takes into account built-in air-source pump, and the end of described interconnecting tube directly and the orifice of Leak Off Test (LOT) platform.
Described Leak Off Test (LOT) platform comprises the display screen of the built-in tensimeter of display and built-in meter readings.
Described Leak Off Test (LOT) platform comprises processor, and this processor contains instruction input module and result output module.
Described Leak Off Test (LOT) platform surface is provided with and regulates button and operating key, and described adjustment button is connected with built-in air-source pump, and by regulating button control air-source pump to open size, described operating key is connected with processor, the start and stop of control processor or action.
So-called lower pressure refers to that test pressure Pt is at (-3 ~+3) mbar,
The working pressure range of described Leak Off Test (LOT) platform: (-900 ~+3000) mbar, flow range: 3 ~ 300000) ml/min, the maximum flow parameter of above-mentioned Leak Off Test (LOT) platform need meet the requirement of tested parts.
The minimum scale of external pressure table is 0.1mbar, and range is 100mbar, full-scale reading error 0.05mbar.
Described adjustable damper valve is used for adjust flux.
The structure of the pressure measurement side breather line of above-mentioned tested parts and the position of pressure tap must by the requirements of ISO5011 standard.
In order to give full play to the function of automated test device Leak Off Test (LOT) platform, the utility model is according to fluid flow phase scheduling theory, employing system serial connection external pressure table and the means of adjustable damper valve, the problem that Leak Off Test (LOT) platform does not run self-locking situation obtains and solves well.
Compared with prior art, the utility model has the following advantages and beneficial effect:
1, compared with common test equipment, the utility model adopts Leak Off Test (LOT) platform, and test process is easy to operate, automaticity is high, measuring error is little, testing efficiency is high.
2, compared with automated test device, test macro of the present utility model owing to only comprising external pressure table and adjustable damper valve except Leak Off Test (LOT) platform, therefore test process more stable, meet the wider of test condition.
3, test macro of the present utility model owing to only comprising external pressure table and adjustable damper valve except Leak Off Test (LOT) platform, and only connect with connecting tracheae and web member, therefore annex facility be simple, fund input is few, implementation and operation is convenient, on original testing apparatus without any impact.
Accompanying drawing explanation
Fig. 1 is test system structure schematic diagram of the present utility model.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in detail.
Embodiment
A kind of flow Auto-Test System being applicable to lower pressure, as shown in Figure 1, this test macro comprises Leak Off Test (LOT) platform 4, tested by the flow of the low flow resistance test specimen 1 under Leak Off Test (LOT) platform 4 pairs of lower pressure, in figure, Q represents actual flow, test macro also comprises external pressure table 2 and adjustable damper valve 3, and adjustable damper valve 3 is for adjust flux.Low flow resistance test specimen 1 interface connects one end of external pressure table 2 and adjustable damper valve 3 successively by connecting tracheae 8, the other end of adjustable damper valve 3 is connected with the interface of Leak Off Test (LOT) platform 4 by connecting tracheae 8.Leak Off Test (LOT) platform 4 inside is provided with built-in tensimeter 5, built-in flowmeter 6 and the built-in air-source pump 7 that interconnecting tube is linked in sequence, and the end of interconnecting tube directly and the orifice of Leak Off Test (LOT) platform 4.
Leak Off Test (LOT) platform 4 comprises the display screen of the built-in tensimeter 5 of display and built-in flowmeter 6 reading.Leak Off Test (LOT) platform 4 comprises processor, and this processor contains instruction input module and result output module.Leak Off Test (LOT) platform 4 surface is provided with and regulates button and operating key, regulates button to be connected with built-in air-source pump 7, and by regulating button control air-source pump 7 to open size, operating key is connected with processor, the start and stop of control processor or action.
So-called lower pressure refers to that test pressure Pt is at (-3 ~+3) mbar, the working pressure range of Leak Off Test (LOT) platform 4: (-900 ~+3000) mbar, flow range: 3 ~ 300000) ml/min, the maximum flow parameter of above-mentioned Leak Off Test (LOT) platform 4 need meet the requirement of tested parts.The minimum scale of external pressure table 2 is 0.1mbar, and range is 100mbar, full-scale reading error 0.05mbar.
The structure of the pressure measurement side breather line of above-mentioned tested parts and the position of pressure tap must by the requirements of ISO5011 standard.
In order to give full play to the function of automated test device Leak Off Test (LOT) platform 4, the test macro of the present embodiment is according to fluid flow phase scheduling theory, the means of employing system serial connection external pressure table 2 and adjustable damper valve 3, the problem that Leak Off Test (LOT) platform 4 does not run self-locking situation obtains and solves well.
This test macro is used to carry out the judge of certain vehicle air-conditioning filter cleaner assembly leaking performance,
Condition: test pressure-2.5mbar, room temperature,
Require: measure the leakage rate under condition pressure,
Object: the size of known leak amount, judges the relation quality that air conditioner filter element coordinates with air-conditioning filter cleaner housing.
Method: comprise the following steps:
(1) low flow resistance test block the corresponding interface is connected with external pressure table and adjustable damper valve by connecting tracheae, and the adjustable damper valve other end is connected with Leak Off Test (LOT) platform by connecting pipe, and connect closely, ne-leakage.
(2) by adjustable damper valve standard-sized sheet.
(3) Leak Off Test (LOT) platform test setting: input test sequence number or title and parameter on Leak Off Test (LOT) platform; assuming that test condition is vacuum pressure is Pt=-2.5mbar; pressure protect is selected to be set to-100mbar (vacuum pressure negative value); select 60 seconds test durations, test pattern is selected manually.
(4) Leak Off Test (LOT) platform is started, initial testing pressure setting-20mbar, guarantee that equipment normally runs, traffic monitoring amount selects the about product requirement value (maximum that namely product is qualified, flow input negative value), by regulating start button, equipment brings into operation, as the close-20mbar of equipment pressure, observe the value of external pressure table:
(4.1) when external pressure representative value is greater than 2.5mbar (absolute value), namely the flow flowing through low flow resistance test specimen is bigger than normal, uses damping adjusting valve regulation, namely increases damping, actual flow on pipeline is reduced, and external pressure representative value can decline thereupon.
(4.2) when external pressure representative value is less than 2.5mbar (absolute value), namely initial testing pressure-20mbar is arranged (absolute value) less than normal, press the adjustment key of testing table, new input initial testing pressure, test pressure increases, actual flow on pipeline is increased, and external pressure representative value can rise thereupon.
(4.3) repeat (4.1) or (4.2) step, make external pressure representative value constant and meet the force value pt of test condition.
(5) when external pressure representative value is constant at Pt=-2.5mbar, click test bed testing key, after equipment runs 60 seconds automatically, end key variable color, by end key, equipment will record the actual flow value of low flow resistance test specimen automatically, and preserves, record.
Accurately can be measured the flow of low flow resistance test specimen by said method, said method ATE (automatic test equipment) in test process is stable, pressure is easy to adjust, and reading is accurate, reproducible, and outcome record is preserved complete, and trackability is good.
Above-mentioned is can understand for ease of those skilled in the art and use utility model to the description of embodiment.Person skilled in the art obviously easily can make various amendment to these embodiments, and General Principle described herein is applied in other embodiments and need not through performing creative labour.Therefore, the utility model is not limited to above-described embodiment, and those skilled in the art, according to announcement of the present utility model, do not depart from improvement that the utility model category makes and amendment all should within protection domain of the present utility model.
Claims (8)
1. one kind is applicable to the flow Auto-Test System of lower pressure, this test macro comprises Leak Off Test (LOT) platform, tested by the flow of Leak Off Test (LOT) platform to the low flow resistance test specimen under lower pressure, it is characterized in that, described test macro also comprises external pressure table and adjustable damper valve, described low flow resistance test specimen interface connects one end of external pressure table and adjustable damper valve successively by connecting tracheae, the other end of adjustable damper valve is connected with the interface of Leak Off Test (LOT) platform by connecting tracheae.
2. a kind of flow Auto-Test System being applicable to lower pressure according to claim 1, it is characterized in that, described Leak Off Test (LOT) platform inside is provided with the built-in tensimeter that interconnecting tube is linked in sequence, built-in flow takes into account built-in air-source pump, and the end of described interconnecting tube directly and the orifice of Leak Off Test (LOT) platform.
3. a kind of flow Auto-Test System being applicable to lower pressure according to claim 2, is characterized in that, described Leak Off Test (LOT) platform comprises the display screen of the built-in tensimeter of display and built-in meter readings.
4. a kind of flow Auto-Test System being applicable to lower pressure according to claim 2, it is characterized in that, described Leak Off Test (LOT) platform comprises processor, and this processor contains instruction input module and result output module.
5. a kind of flow Auto-Test System being applicable to lower pressure according to claim 4; it is characterized in that; described Leak Off Test (LOT) platform surface is provided with and regulates button and operating key; described adjustment button is connected with built-in air-source pump; size is opened by regulating button control air-source pump; described operating key is connected with processor, the start and stop of control processor or action.
6. a kind of flow Auto-Test System being applicable to lower pressure according to claim 1, is characterized in that, described low end finger test pressure is at-3 ~+3mbar.
7. a kind of flow Auto-Test System being applicable to lower pressure according to claim 1, is characterized in that, the working pressure range of described Leak Off Test (LOT) platform :-900 ~+3000mbar, flow range: 3 ~ 300000ml/min.
8. a kind of flow Auto-Test System being applicable to lower pressure according to claim 1, is characterized in that, the minimum scale of described external pressure table is 0.1mbar, and range is 100mbar, full-scale reading error 0.05mbar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845324.5U CN205102990U (en) | 2015-10-28 | 2015-10-28 | Flow automatic test system suitable for low pressure condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520845324.5U CN205102990U (en) | 2015-10-28 | 2015-10-28 | Flow automatic test system suitable for low pressure condition |
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| Publication Number | Publication Date |
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| CN205102990U true CN205102990U (en) | 2016-03-23 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520845324.5U Expired - Fee Related CN205102990U (en) | 2015-10-28 | 2015-10-28 | Flow automatic test system suitable for low pressure condition |
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| Country | Link |
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| CN (1) | CN205102990U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900442A (en) * | 2017-12-07 | 2019-06-18 | 曼胡默尔滤清器（上海）有限公司 | A kind of air-distributor vacuum actuator leakage test device and test method |
-
2015
- 2015-10-28 CN CN201520845324.5U patent/CN205102990U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900442A (en) * | 2017-12-07 | 2019-06-18 | 曼胡默尔滤清器（上海）有限公司 | A kind of air-distributor vacuum actuator leakage test device and test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160323 Termination date: 20211028 |