CN108918053A - Exchange heat mattress sealing ventilation tester and test method - Google Patents
Exchange heat mattress sealing ventilation tester and test method Download PDFInfo
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- CN108918053A CN108918053A CN201810763711.2A CN201810763711A CN108918053A CN 108918053 A CN108918053 A CN 108918053A CN 201810763711 A CN201810763711 A CN 201810763711A CN 108918053 A CN108918053 A CN 108918053A
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- solenoid valve
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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
- G01M3/28—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
- G01M3/2807—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 pipes
- G01M3/2815—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 pipes using pressure measurements
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- Examining Or Testing Airtightness (AREA)
Abstract
The invention belongs to mattress the field of test technology, and in particular to a kind of heat exchange mattress sealing ventilation tester, including inlet end channel and outlet side channel, inlet end channel head end have been arranged in parallel sealing test channel and ventilation TCH test channel after total reduction valve；Ventilation TCH test channel is provided with point pressure reducing valve one and solenoid valve one along airflow direction, and sealing test channel is provided with point pressure reducing valve two and solenoid valve three along airflow direction；Inlet end channel tail end installs the pressure gauge of signal piping pressure and connects the connector one of trial product to be measured；Head end installation in outlet side channel connects the connector two of trial product to be measured, two branched bottoms are set on the channel of outlet side, respectively two branch of one branch of outlet side and outlet side, one branch of outlet side is provided with solenoid valve two and flowmeter along airflow direction, and solenoid valve four is arranged along airflow direction in two branch of outlet side.Heat exchange mattress sealing ventilation tester provided by the invention, ensure that the accuracy of quality testing and improves detection efficiency.
Description
Technical field
The invention belongs to mattress the field of test technology, and in particular to a kind of heat exchange mattress sealing ventilation tester and test
Method.
Background technique
Exchange heat new product of the bedding product as company's a technique and equipment successful innovation, has obtained client and market
Approve.The second half of last year, we were also coupled to some complaints of client while product is introduced to the market energetically, below primary feedback
Both sides problem：1, the phenomenon that heat exchanging water pipe's blow-by, there are leaks；2, blocking inside heat exchanging water pipe, heat exchange water pump can not
Realize whole circulation or part pipeline since blocking cannot heat.In conjunction with both of these problems, we analyze existing production
Detection means of the product before shipment still has several drawbacks place.Existing detecting tool and method are as follows：Detecting tool is one
Shut-off valve series connection of a pressure reducing valve with pressure gauge with a manual switch.Operating method is after mattress completes, by people
Work blocks the water outlet of heat exchanging water pipe, while water inlet being terminated on shut-off valve, opens shut-off valve gas supply, closes cut-off later
Valve, sees whether pressure gauge had pressure drop in 1 minute, if any then determining pipeline gas leakage.But this test method has 2：
1, operative employee is possible to forget to close after opening shut-off valve, at this moment no matter pipeline whether gas leakage not can be appreciated that pressure drop, exist
The risk of missing inspection；2, such detection can not judge whether pipeline is unobstructed, can only detect sealing.
Summary of the invention
The object of the present invention is to provide a kind of heat exchange mattress sealing ventilation testers, ensure that the accuracy of quality testing simultaneously
Improve detection efficiency.
The present invention is by including that following technical solution realizes above-mentioned purpose or other purposes.
Present invention firstly provides a kind of heat exchange mattress sealing ventilation tester, including inlet end channel and outlet side channel,
Inlet end channel head end has been arranged in parallel sealing test channel and ventilation TCH test channel after total reduction valve；
Ventilation TCH test channel is provided with point pressure reducing valve one and solenoid valve one along airflow direction, and sealing test channel is along air-flow side
To being provided with point pressure reducing valve two and solenoid valve three；Inlet end channel tail end is installed the pressure gauge of signal piping pressure and is connected to be measured
The connector one of trial product；
Head end installation in outlet side channel connects the connector two of trial product to be measured, and setting Liang Tiao branch is logical on the channel of outlet side
Road, respectively two branch of one branch of outlet side and outlet side, one branch of outlet side are provided with solenoid valve two and stream along airflow direction
Solenoid valve four is arranged along airflow direction in meter, two branch of outlet side；
The solenoid valve one, solenoid valve two, solenoid valve three, solenoid valve four are respectively by the PLC control system control in tester
On-off processed.
Further, the connector one and connector two are quick coupling.
Further, the setting pressure of the total reduction valve, which is greater than, divides pressure reducing valve one and divides pressure reducing valve two, divides pressure reducing valve two
Setting pressure be greater than and divide the setting pressure of pressure reducing valve one.
Invention also improves a kind of method for carrying out heat exchange mattress sealing ventilation performance test using above-mentioned tester, packets
Include following steps,
S1, original state, solenoid valve one, solenoid valve two, solenoid valve three and solenoid valve four are in normally off；
S2, the hot-water line both ends for the mattress that exchanges heat are inserted into respectively on connector one and connector two；
S3, solenoid valve three are opened, and when pressure gauge reading reaches the setting pressure of point pressure reducing valve two, solenoid valve three is closed,
Product hot water line enters state of pressure keeping；
Pressure gauge reading is read after S4, PLC control system delay setting time, divides setting for pressure reducing valve two as pressure value is less than
It when constant-pressure, then alarms, then opens solenoid valve four and be vented, closed after being vented to setting duration；If pressure value is no less than point subtracting
The setting pressure of pressure valve two, then do not alarm, and then opens solenoid valve four and is vented, and closes after being vented to setting duration；
S5, if do not alarmed, solenoid valve four complete exhaust event and close after, solenoid valve one open, when pressure gauge reading reaches
When to the setting pressure for dividing pressure reducing valve one, PLC control system opens solenoid valve two, while reading flowmeter after the setting time that is delayed
Reading；The meter readings of reading and standard value compare, if measured value sets percentage alarm lower than standard value, in test
Only；It does not alarm when being not below standard value setting percentage such as measured value, display product test is qualified；Then PLC control system is closed
Close solenoid valve one and solenoid valve two.
Further, the total reduction valve sets pressure as 0.4~1.0MPa, it is described divide pressure reducing valve one set pressure as
0.1~0.4MPa, it is described divide pressure reducing valve two set pressure as 0.2~0.4MPa.
Further, the PLC control system reads pressure gauge reading after being delayed at least 2 seconds.
Further, the PLC control system reads meter readings after being delayed at least 2 seconds.
Further, the standard value be exchange heat mattress hot-water line it is indeformable when the flow that tests out.
Further, the reading and standard value that the flowmeter is read compare, as measured value is lower than 10% Times of standard value
It is alert.
The present invention is prominent and beneficial compared with prior art to be had the technical effect that：
The accuracy of detection is greatly improved in the present invention, even the leak source of aperture size also can be found out.Together
When the present invention by flowmeter apply flexibly for detection heat exchange mattress hot-water line cross-section variation it is whether overproof, therefore, it is determined that hose is
No local stoppages, it is ensured that the quality of shipment product.
In addition, the present invention realizes automatic detection using PLC control system, reviewer's working efficiency is greatly improved.Only
It needs for Inlet and outlet water end pipe of product hot-water line to be connected on the setting position of instrument, then presses instrument button, later 2 kinds of surveys
Examination is all automatically performed by instrument, and the waiting time of sealing test was also reduced to 10 seconds by original 1 minute.Reduce a large amount of
Manual action also avoids the quality risk as caused by the uncertainty of artificial detection.
Detailed description of the invention
Fig. 1 is the pipeline schematic diagram of tester in the embodiment of the present invention；
Fig. 2 is the PLC control system circuit diagram of tester in the embodiment of the present invention.
Appended drawing reference：J, total reduction valve；J1, divide pressure reducing valve one；J2, divide pressure reducing valve two；V1, solenoid valve one；V2, solenoid valve
Two；V3, solenoid valve three；V4, solenoid valve four；K1, connector one；K2, connector two；P, pressure gauge；F, flowmeter.
Specific embodiment
Specific embodiments of the present invention will be described in further detail with reference to the accompanying drawing.
Inlet end and outlet side is arranged in a kind of heat exchange mattress sealing ventilation tester, as described in Figure 1, tester, connect into
The pipeline at gas end is defined as inlet end channel, and the pipeline for connecting outlet side is defined as outlet side channel, and inlet end channel head end connects
It connects inlet end and is being arranged in parallel sealing test channel and ventilation TCH test channel after total reduction valve J；Inlet end channel tail
The pressure gauge P of end installation signal piping pressure and one K1 of connector for connecting trial product to be measured, one K1 of connector use quick coupling, side
Just product is docked.
Wherein, ventilation TCH test channel is provided with one V1 of one J1 of point pressure reducing valve and solenoid valve along airflow direction, and sealing test is logical
Road is provided with three V3 of two J2 of point pressure reducing valve and solenoid valve along airflow direction.
Head end installation in outlet side channel connects two K2 of connector of trial product to be measured, and two K2 of connector equally uses quick coupling,
And it is located proximate to one K1 of connector setting.On the channel of outlet side be arranged two branched bottoms, respectively one branch of outlet side and go out
Two branch of gas end, one branch of outlet side are provided with solenoid valve two V2 and flowmeter F along airflow direction, and two branch of outlet side is along air-flow
Four V4 of solenoid valve is arranged in direction.
In conjunction with Fig. 2, above-mentioned one V1 of solenoid valve, two V2 of solenoid valve, three V3 of solenoid valve, four V4 of solenoid valve on-off respectively by surveying
The PLC control system control in instrument is tried, the pressure gauge P and flowmeter F on channel are coupled in PLC control system, for that will survey
The data feedback obtained is to PLC control system.
Wherein, the setting pressure of total reduction valve J divides pressure reducing valve two greater than dividing one J1 of pressure reducing valve and dividing pressure reducing valve two J2 here
The setting pressure of J2 is greater than the setting pressure for dividing one J1 of pressure reducing valve；Since caliber is 8mm in the present embodiment, total reduction valve J is set
Constant-pressure is adjusted to 0.4MPa, and one J1 of pressure reducing valve setting pressure is divided to be adjusted to 0.1MPa, divides two J2 of pressure reducing valve setting pressure adjustment
For 0.2MPa.Those skilled in the art can set different pressure according to caliber difference, can also be adjusted according to customer requirement
Pressure size.
The following are the methods for carrying out heat exchange mattress sealing ventilation performance test using above-mentioned tester, include the following steps,
S1, original state, one V1 of solenoid valve, two V2 of solenoid valve, three V3 of solenoid valve and four V4 of solenoid valve are in normally closed shape
State；
S2, the hot-water line both ends for the mattress that exchanges heat are inserted into respectively on two K2 of one K1 of connector and connector；
S3, three V3 of solenoid valve are opened, when pressure gauge P reading reaches the setting pressure of two J2 of point pressure reducing valve, solenoid valve three
V3 is closed, and product hot water line enters state of pressure keeping；
Pressure gauge P reading is read after S4, PLC control system delay setting time, divides pressure reducing valve two J2 as pressure value is less than
Setting pressure when, then alarm, then open four V4 of solenoid valve exhaust, be vented to setting duration after close；As pressure value is not small
It in the setting pressure for dividing two J2 of pressure reducing valve, does not then alarm, then opens four V4 of solenoid valve exhaust, closed after being vented to setting duration
It closes；
S5, if do not alarmed, four V4 of solenoid valve complete exhaust event and close after, one V1 of solenoid valve open, when pressure gauge P read
When number reaches the setting pressure of one J1 of point pressure reducing valve, PLC control system opens two V2 of solenoid valve, while reading after the setting time that is delayed
Flowmeter F is taken to read；(standard value is that the hot-water line of heat exchange mattress is tested when indeformable to the flowmeter F reading of reading with standard value
Flow out) comparison, if measured value sets percentage alarm lower than standard value, test stops；As measured value is not below standard
Value is not alarmed when setting percentage, and display product test is qualified；Then PLC control system closes one V1 of solenoid valve and solenoid valve two
V2。
Wherein, pressure gauge P reading is read after PLC control system is delayed 10 seconds in the present embodiment；Delay read flow after 2 seconds
Count F reading.The reading and standard value that flowmeter F is read compare, as measured value is lower than 10% alarm of standard value.The above is only
It is the preferred embodiment of the present invention, it is noted that for those skilled in the art, do not departing from this hair
Under the premise of bright technical principle, several improvement and replacement can also be made, these are improved and replacement also should be regarded as guarantor of the invention
Protect range.
Claims (9)
1. a kind of heat exchange mattress sealing ventilation tester, it is characterised in that：
Including inlet end channel and outlet side channel, inlet end channel head end has been arranged in parallel sealing after total reduction valve (J)
TCH test channel and ventilation TCH test channel；
Ventilation TCH test channel is provided with point pressure reducing valve one (J1) and solenoid valve one (V1) along airflow direction, and sealing test channel is along gas
Stream direction is provided with point pressure reducing valve two (J2) and solenoid valve three (V3)；The pressure of inlet end channel tail end installation signal piping pressure
The connector one (K1) of table (P) and connection trial product to be measured；
Head end installation in outlet side channel connects the connector two (K2) of trial product to be measured, and setting Liang Tiao branch is logical on the channel of outlet side
Road, respectively two branch of one branch of outlet side and outlet side, one branch of outlet side are provided with solenoid valve two (V2) along airflow direction
With flowmeter (F), solenoid valve four (V4) is arranged along airflow direction in two branch of outlet side；
The solenoid valve one (V1), solenoid valve two (V2), solenoid valve three (V3), solenoid valve four (V4) are respectively by tester
PLC control system controls on-off.
2. heat exchange mattress sealing ventilation tester according to claim 1, it is characterised in that：It the connector one (K1) and connects
First two (K2) are quick coupling.
3. heat exchange mattress sealing ventilation tester according to claim 1, it is characterised in that：The total reduction valve (J)
Setting pressure, which is greater than, divides pressure reducing valve one (J1) and divides pressure reducing valve two (J2), and the setting pressure of pressure reducing valve two (J2) is divided to be greater than a point decompression
The setting pressure of valve one (J1).
4. a kind of carry out heat exchange mattress sealing ventilation performance test methods using any tester of claim 1-3,
It is characterized in that：Include the following steps,
S1, original state, solenoid valve one (V1), solenoid valve two (V2), solenoid valve three (V3) and solenoid valve four (V4) are in often
Closed state；
S2, the hot-water line both ends for the mattress that exchanges heat are inserted into respectively on connector one (K1) and connector two (K2)；
S3, solenoid valve three (V3) are opened, when pressure gauge (P) reading reaches the setting pressure of point pressure reducing valve two (J2), solenoid valve
Three (V3) are closed, and product hot water line enters state of pressure keeping；
Pressure gauge (P) reading is read after S4, PLC control system delay setting time, divides pressure reducing valve two (J2) as pressure value is less than
Setting pressure when, then alarm, then open solenoid valve four (V4) exhaust, be vented to setting duration after close；Not such as pressure value
It less than the setting pressure for dividing pressure reducing valve two (J2), does not then alarm, then opens solenoid valve four (V4) exhaust, be vented to setting duration
After close；
S5, if do not alarmed, solenoid valve four (V4) complete exhaust event and close after, solenoid valve one (V1) open, as pressure gauge (P)
For reading when reaching the setting pressure of point pressure reducing valve one (J1), PLC control system opens solenoid valve two (V2), while being delayed when setting
Between after read flowmeter (F) reading；Flowmeter (F) reading and the standard value of reading compare, as measured value is set lower than standard value
Percentage alarm, test stop；It does not alarm when being not below standard value setting percentage such as measured value, display product test is closed
Lattice；Then PLC control system closes solenoid valve one (V1) and solenoid valve two (V2).
5. heat exchange mattress sealing ventilation performance test methods according to claim 4, it is characterised in that：The total reduction valve
(J) set pressure as 0.4~1.0MPa, it is described divide pressure reducing valve one (J1) set pressure as 0.1~0.4MPa, described point of decompression
Valve two (J2) sets pressure as 0.2~0.4MPa.
6. heat exchange mattress sealing ventilation performance test methods according to claim 4, it is characterised in that：The PLC control
Pressure gauge (P) reading is read after system delay at least 2 seconds.
7. heat exchange mattress sealing ventilation performance test methods according to claim 4, it is characterised in that：The PLC control
Flowmeter (F) reading is read after system delay at least 2 seconds.
8. heat exchange mattress sealing ventilation performance test methods according to claim 4, it is characterised in that：The standard value is
The flow that the hot-water line of heat exchange mattress tests out when indeformable.
9. heat exchange mattress sealing ventilation performance test methods according to claim 1, it is characterised in that：The flowmeter
(F) reading and standard value read compares, as measured value is lower than 10% alarm of standard value.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810763711.2A CN108918053A (en) | 2018-07-12 | 2018-07-12 | Exchange heat mattress sealing ventilation tester and test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810763711.2A CN108918053A (en) | 2018-07-12 | 2018-07-12 | Exchange heat mattress sealing ventilation tester and test method |
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| CN108918053A true CN108918053A (en) | 2018-11-30 |
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ID=64410521
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810763711.2A Pending CN108918053A (en) | 2018-07-12 | 2018-07-12 | Exchange heat mattress sealing ventilation tester and test method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588182A (en) * | 2021-07-28 | 2021-11-02 | 青岛科发高技术工程有限公司 | System for detecting air tightness of refrigerator |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203037430U (en) * | 2013-01-16 | 2013-07-03 | 红塔烟草(集团)有限责任公司 | Thin plate type cut tobacco drier cylinder wall steam system leakage detection device |
| CN103310594A (en) * | 2012-03-15 | 2013-09-18 | 刘锋利 | Water leakage failure alarming device for school toilet |
| US20140083170A1 (en) * | 2012-09-14 | 2014-03-27 | Advanced Scientifics, Inc. | Test system and method for flexible containers |
| CN104089748A (en) * | 2014-07-31 | 2014-10-08 | 上海远梓电子科技有限公司 | Constant-pressure detection testing machine for air pressure of braking hose |
| CN204855119U (en) * | 2015-08-12 | 2015-12-09 | 广州市泓远自动化设备有限公司 | Plate heat exchanger pressure measurement |
| CN105300804A (en) * | 2015-11-11 | 2016-02-03 | 四川沃姆斯能源技术有限公司 | Heat exchanger pressure-measuring machine for gas wall-hanging stove |
| CN205280306U (en) * | 2015-12-21 | 2016-06-01 | 北京中海航博科技有限公司 | Airtight inspection integrated console |
| CN105758599A (en) * | 2016-05-11 | 2016-07-13 | 中山市铧禧电子科技有限公司 | Automatic leakage detecting device of water heater or wall-hung stove and operating method thereof |
| US20160334029A1 (en) * | 2015-05-12 | 2016-11-17 | Heather French | Valve tracker |
| CN106426839A (en) * | 2016-11-09 | 2017-02-22 | 上海普莱克斯自动设备制造有限公司 | Mold pipeline detection device |
-
2018
- 2018-07-12 CN CN201810763711.2A patent/CN108918053A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103310594A (en) * | 2012-03-15 | 2013-09-18 | 刘锋利 | Water leakage failure alarming device for school toilet |
| US20140083170A1 (en) * | 2012-09-14 | 2014-03-27 | Advanced Scientifics, Inc. | Test system and method for flexible containers |
| CN203037430U (en) * | 2013-01-16 | 2013-07-03 | 红塔烟草(集团)有限责任公司 | Thin plate type cut tobacco drier cylinder wall steam system leakage detection device |
| CN104089748A (en) * | 2014-07-31 | 2014-10-08 | 上海远梓电子科技有限公司 | Constant-pressure detection testing machine for air pressure of braking hose |
| US20160334029A1 (en) * | 2015-05-12 | 2016-11-17 | Heather French | Valve tracker |
| CN204855119U (en) * | 2015-08-12 | 2015-12-09 | 广州市泓远自动化设备有限公司 | Plate heat exchanger pressure measurement |
| CN105300804A (en) * | 2015-11-11 | 2016-02-03 | 四川沃姆斯能源技术有限公司 | Heat exchanger pressure-measuring machine for gas wall-hanging stove |
| CN205280306U (en) * | 2015-12-21 | 2016-06-01 | 北京中海航博科技有限公司 | Airtight inspection integrated console |
| CN105758599A (en) * | 2016-05-11 | 2016-07-13 | 中山市铧禧电子科技有限公司 | Automatic leakage detecting device of water heater or wall-hung stove and operating method thereof |
| CN106426839A (en) * | 2016-11-09 | 2017-02-22 | 上海普莱克斯自动设备制造有限公司 | Mold pipeline detection device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113588182A (en) * | 2021-07-28 | 2021-11-02 | 青岛科发高技术工程有限公司 | System for detecting air tightness of refrigerator |
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Effective date of registration: 20210225 Address after: 226009 No. 1699 Xing Hu Road, Nantong economic and Technological Development Zone, Nantong, Jiangsu Applicant after: LUOLAI LIFESTYLE TECHNOLOGY Co.,Ltd. Applicant after: Shanghai Luolai Life Technology Co.,Ltd. Applicant after: LUOLAI HOME TEXTILE Co.,Ltd. Address before: 226009 No. 1699 Xing Hu Road, Nantong economic and Technological Development Zone, Nantong, Jiangsu Applicant before: LUOLAI LIFESTYLE TECHNOLOGY Co.,Ltd. Applicant before: LUOLAI HOME TEXTILE Co.,Ltd. |
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Application publication date: 20181130 |