CN110274738A - A kind of hermetically sealed box body tightness monitoring method and system based on moisture increment - Google Patents

A kind of hermetically sealed box body tightness monitoring method and system based on moisture increment Download PDF

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Publication number
CN110274738A
CN110274738A CN201910544439.3A CN201910544439A CN110274738A CN 110274738 A CN110274738 A CN 110274738A CN 201910544439 A CN201910544439 A CN 201910544439A CN 110274738 A CN110274738 A CN 110274738A
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China
Prior art keywords
hermetically sealed
moisture
cabinet
box body
moisture increment
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Application number
CN201910544439.3A
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Chinese (zh)
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CN110274738B (en
Inventor
张健能
劳锦富
潘平东
麦志彦
刘律辉
楚少华
梁少梅
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Guangdong Power Grid Co Ltd
Foshan Power Supply Bureau of Guangdong Power Grid Corp
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Guangdong Power Grid Co Ltd
Foshan Power Supply Bureau of Guangdong Power Grid Corp
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Priority to CN201910544439.3A priority Critical patent/CN110274738B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01DMEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00Measuring or testing not otherwise provided for
    • G01D21/02Measuring two or more variables by means not covered by a single other subclass
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/04Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
    • G01M3/16Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means
    • G01M3/18Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators
    • G01M3/186Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using electric detection means for pipes, cables or tubes; for pipe joints or seals; for valves; for welds; for containers, e.g. radiators for containers, e.g. radiators
    • GPHYSICS
    • G08SIGNALLING
    • G08BSIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/18Status alarms
    • G08B21/182Level alarms, e.g. alarms responsive to variables exceeding a threshold
    • GPHYSICS
    • G08SIGNALLING
    • G08CTRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C17/00Arrangements for transmitting signals characterised by the use of a wireless electrical link
    • G08C17/02Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link

Abstract

The invention discloses a kind of hermetically sealed box body tightness monitoring method and system based on moisture increment, the described method comprises the following steps: measuring t in hermetically sealed cabinet0Moment vapor air pressure P0And hermetically sealed box volume V, calculate t0Air moisture VP in moment hermetically sealed cabinet0;Hermetically sealed cabinet inner condenser is set from t0It is S that moment, which starts total operating time, and it is ρ that moisture efficiency, which is discharged, during the condenser working, calculates water discharge quantity during the condenser working are as follows: S ρ;Measure t in hermetically sealed cabinet0+ S moment vapor air pressure P1, calculate t0Air moisture VP in+S moment cabinet1;Moisture increment Delta V of the hermetically sealed cabinet in duration S is calculated, by moisture increment Delta V and preset threshold value VthCompare, if moisture increment Delta V is greater than preset threshold value VthThen trigger poor sealing alarm.The present invention judges box body tightness by the cabinet moisture increment in setting time compared with preset threshold and provides alarm, reduces workload, improves the accuracy of monitoring, overcomes the defect that monitoring of unpacking destroys chamber door leakproofness.

Description

A kind of hermetically sealed box body tightness monitoring method and system based on moisture increment
Technical field
The present invention relates to field of measuring technique, more particularly, to a kind of hermetically sealed box sealing based on moisture increment Property monitoring method and system.
Background technique
Various cabinets, including switch mechanism box, terminal box, distribution box of electrical equipment etc., for prevent case in-vivo device by Tide corrosion damage, insulation reduces short circuit, needs to take moisture preventive measure, and periodically checks moisture preventive measure and cabinet is There is condensation in no water inlet.With the development of semiconductor refrigerating technology, semiconductor cooling condenser is also more and more to be used for cabinet moisture protected dry Dry application.Since semiconductor refrigerating is moisture-proof, the intracorporal moisture of case can be directly reduced, therefore cabinet is also gradually using hermetically sealed Mode.
Using the moisture-proof hermetically sealed cabinet of semiconductor cooling condenser, for discovery in time, the failure for the treatment of box door weather strip, bottom electricity The poor sealings defects such as the breakage of cable incoming seal, weld cracking, prevent rainwater, moisture from largely entering cabinet, need before raining Afterwards, before and after wet weather, the leakproofness of cabinet is checked, heavy workload.The high cabinet of safety requirements, often takes locking How the mode of protection checks whether box sealing is normal, and there are contradictions after locking.It opens chamber door and checks box body tightness, deposit The deficiencies of damaging chamber door sealing and external humidification enters cabinet and increases the condenser working time.
Summary of the invention
The present invention be overcome it is above-mentioned in the prior art based on its method for conducting leak test heavy workload of hermetically sealed cabinet, unpack The defect of detection case door sealing provides a kind of hermetically sealed box body tightness monitoring method based on moisture increment and system side Method.
Technical scheme is as follows:
First aspect present invention provides a kind of hermetically sealed box body tightness monitoring method based on moisture increment, including with Lower step:
S1: t in hermetically sealed cabinet is measured0Moment vapor air pressure P0And hermetically sealed box volume V, calculate t0Moment is entirely close Air moisture VP in joint sealing body0
S2: hermetically sealed cabinet inner condenser is set from t0It is S, the condenser working mistake that moment, which starts total operating time, It is ρ that moisture efficiency is discharged in journey, calculates water discharge quantity during the condenser working are as follows: S ρ;
S3: t in hermetically sealed cabinet is measured0+ S moment vapor air pressure P1, calculate t0Air moisture V in+S moment cabinet P1
S4: moisture increment Delta V of the hermetically sealed cabinet in duration S is calculated, by moisture increment Delta V and preset threshold value VthThan Compared with if moisture increment Delta V is greater than preset threshold value VthThen trigger poor sealing alarm.
In the present solution, when testing vapor air pressure in hermetically sealed cabinet, while measuring hermetically sealed case body temperature and phase To humidity.
In the present solution, the moisture increment Delta V calculation formula in duration S is as follows:
Δ V=VP1+S·V·P0
In the present solution, the humidity measurements of any time are more than preset value triggering poor sealing alarm in hermetically sealed cabinet.
Second aspect of the present invention additionally provides a kind of hermetically sealed box body tightness monitoring system based on moisture increment, described System includes: vapor barometric surveying module, for measuring vapor atmospheric pressure value in hermetically sealed cabinet;Irradiation modules are condensed, are used In the intracorporal condensation drying of hermetically sealed case;Temperature and humidity measurement module, for measuring the intracorporal temperature and humidity of hermetically sealed case;
Data processing and control module, for moisture increment Delta V data processing and carry out moisture increment and preset threshold Vth Relatively and export control instruction;Indicating module is alerted, the output order of processing and control module and is alerted for receiving data Response.
In the present solution, the data processing and control module also carries out multilevel iudge and the output of measured temperature and preset value Control instruction is to alerting indicating module.
In the present solution, the data processing and control module also has wireless communication function, control instruction is passed through into channel radio The mode of letter is sent to alarm indicating module.
In the present solution, the alarm indicating module has wireless receiving function, processing and control module passes through for receiving data The control instruction that communication is sent.
In the present solution, the alarm indicating module is set to outside hermetically sealed cabinet.
Compared with prior art, the beneficial effect of technical solution of the present invention is:
The present invention is by monitoring the cabinet moisture increment in hermetically sealed cabinet setting time, by compared with preset threshold It is indicated to judge box body tightness and provide alarm, greatly reduces the workload of hermetically sealed box body tightness monitoring, improve The accuracy of monitoring, while overcoming the defect that monitoring of unpacking destroys chamber door leakproofness.
Detailed description of the invention
Fig. 1 is the hermetically sealed box body tightness monitoring method flow chart based on moisture increment.
Fig. 2 is that the hermetically sealed box body tightness based on moisture increment monitors system block diagram.
Specific embodiment
To better understand the objects, features and advantages of the present invention, with reference to the accompanying drawing and specific real Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below Specific embodiment limitation.
Embodiment 1
As shown in Figure 1, first aspect present invention provides a kind of hermetically sealed box body tightness monitoring based on moisture increment Method, comprising the following steps:
S1: t in hermetically sealed cabinet is measured0Moment vapor air pressure P0And hermetically sealed box volume V, calculate t0Moment is entirely close Air moisture VP in joint sealing body0
It should be noted that measured while measuring vapor air pressure in hermetically sealed cabinet hermetically sealed case body temperature and Relative humidity.
S2: hermetically sealed cabinet inner condenser is set from t0It is S, the condenser working mistake that moment, which starts total operating time, It is ρ that moisture efficiency is discharged in journey, calculates water discharge quantity during the condenser working are as follows: S ρ;
S3: t in hermetically sealed cabinet is measured0+ S moment vapor air pressure P1, calculate t0Air moisture V in+S moment cabinet P1
S4: moisture increment Delta V of the hermetically sealed cabinet in duration S is calculated, by moisture increment Delta V and preset threshold value VthThan Compared with if moisture increment Delta V is greater than preset threshold value VthThen trigger poor sealing alarm.
In the present solution, the moisture increment Delta V calculation formula in duration S is as follows:
Δ V=VP1+S·ρ-V·P0
In the present solution, the humidity measurements of any time are more than preset value triggering poor sealing alarm in hermetically sealed cabinet.
As shown in Fig. 2, second aspect of the present invention additionally provides a kind of hermetically sealed box body tightness prison based on moisture increment Examining system, the system comprises: vapor barometric surveying module, for measuring vapor atmospheric pressure value in hermetically sealed cabinet;Condensation Irradiation modules are used for the intracorporal condensation drying of hermetically sealed case;Temperature and humidity measurement module, it is intracorporal warm and humid for measuring hermetically sealed case Degree;
Data processing and control module, for moisture increment Delta V data processing and carry out moisture increment and preset threshold Vth Relatively and export control instruction;Indicating module is alerted, the output order of processing and control module and is alerted for receiving data Response.
It should be noted that alerting one kind that indicating module may include indicator light, buzzer, display panel in the present invention Or it is a variety of, the text of indicator light, the audible and visual alarm of buzzer or display board indicates alarm.
In the present solution, the data processing and control module also carries out multilevel iudge and the output of measured temperature and preset value Control instruction is to alerting indicating module.
In the present solution, the data processing and control module also has wireless communication function, control instruction is passed through into channel radio The mode of letter is sent to alarm indicating module.
In the present solution, the alarm indicating module has wireless receiving function, processing and control module passes through for receiving data The control instruction that communication is sent.
In the present solution, the alarm indicating module is set to outside hermetically sealed cabinet.
The same or similar label correspond to the same or similar components;
The terms describing the positional relationship in the drawings are only for illustration, should not be understood as the limitation to this patent;
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention Protection scope within.

Claims (9)

1. a kind of hermetically sealed box body tightness monitoring method based on moisture increment, which comprises the following steps:
S1: t in hermetically sealed cabinet is measured0Moment vapor air pressure P0And hermetically sealed box volume V, calculate t0Moment hermetically sealed case Internal air moisture VP0
S2: hermetically sealed cabinet inner condenser is set from t0Moment starts to amount to operating time for S, during the condenser working Discharge moisture efficiency is ρ, calculates water discharge quantity during the condenser working are as follows: S ρ;
S3: t in hermetically sealed cabinet is measured0+ S moment vapor air pressure P1, calculate t0Air moisture VP in+S moment cabinet1
S4: moisture increment Delta V of the hermetically sealed cabinet in duration S is calculated, by moisture increment Delta V and preset threshold value VthCompare, If moisture increment Delta V is greater than preset threshold value VthThen trigger poor sealing alarm.
2. a kind of hermetically sealed box body tightness monitoring method based on moisture increment according to claim 1, feature exist In when testing vapor air pressure in hermetically sealed cabinet, while measuring hermetically sealed case body temperature and relative humidity.
3. a kind of hermetically sealed box body tightness monitoring method based on moisture increment according to claim 1, feature exist In the moisture increment Delta V calculation formula in duration S is as follows:
Δ V=VP1+S·ρ-V·P0
4. a kind of hermetically sealed box body tightness monitoring method based on moisture increment according to claim 1, feature exist In the humidity measurements of any time are more than preset value triggering poor sealing alarm in hermetically sealed cabinet.
5. a kind of hermetically sealed box body tightness based on moisture increment monitors system, which is characterized in that the system comprises: water steams Gas barometric surveying module, for measuring vapor atmospheric pressure value in hermetically sealed cabinet;Irradiation modules are condensed, in hermetically sealed cabinet Condensation drying;Temperature and humidity measurement module, for measuring the intracorporal temperature and humidity of hermetically sealed case;
Data processing and control module, for moisture increment Delta V data processing and carry out moisture increment and preset threshold VthCompare And export control instruction;Indicating module is alerted, the output order of processing and control module and carries out alarm response for receiving data.
6. a kind of hermetically sealed box body tightness based on moisture increment according to claim 5 monitors system, feature exists In the data processing and control module also carries out the multilevel iudge of measured temperature and preset value and exports control instruction to alarm Indicating module.
7. a kind of hermetically sealed box body tightness based on moisture increment according to claim 5 monitors system, feature exists In the data processing and control module also has wireless communication function, and control instruction is sent to through wireless communication Alert indicating module.
8. a kind of hermetically sealed box body tightness based on moisture increment according to claim 7 monitors system, feature exists In the alarm indicating module has wireless receiving function, and processing and control module by wireless communication send out by mode for receiving data The control instruction sent.
9. according to a kind of described in any item hermetically sealed box body tightness monitoring systems based on moisture increment of claim 5-8, It is characterized in that, the alarm indicating module is set to outside hermetically sealed cabinet.
CN201910544439.3A 2019-06-21 2019-06-21 Method and system for monitoring sealing performance of fully-sealed box based on moisture increment Active CN110274738B (en)

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CN201910544439.3A CN110274738B (en) 2019-06-21 2019-06-21 Method and system for monitoring sealing performance of fully-sealed box based on moisture increment

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Application Number Priority Date Filing Date Title
CN201910544439.3A CN110274738B (en) 2019-06-21 2019-06-21 Method and system for monitoring sealing performance of fully-sealed box based on moisture increment

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201666840U (en) * 2010-04-07 2010-12-08 苏州宝骅机械技术有限公司 Sealing performance detector of sealing element
CN201716155U (en) * 2010-04-04 2011-01-19 苏州宝骅机械技术有限公司 Sealing property detector for sealing parts
JP2013253747A (en) * 2012-06-07 2013-12-19 Ebara Refrigeration Equipment & Systems Co Ltd Absorption heat pump and method of operating absorption heat pump
CN103728105A (en) * 2013-12-31 2014-04-16 苏州宝骅机械技术有限公司 Quantitative leak detection device of pressure system
CN204007693U (en) * 2014-04-14 2014-12-10 北京国信智科科技有限公司 A kind of sealed packet vanning environmental parameter detection system
CN206960737U (en) * 2017-03-24 2018-02-02 中国南方电网有限责任公司超高压输电公司贵阳局 A kind of cable splice closure sealing monitoring system

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201716155U (en) * 2010-04-04 2011-01-19 苏州宝骅机械技术有限公司 Sealing property detector for sealing parts
CN201666840U (en) * 2010-04-07 2010-12-08 苏州宝骅机械技术有限公司 Sealing performance detector of sealing element
JP2013253747A (en) * 2012-06-07 2013-12-19 Ebara Refrigeration Equipment & Systems Co Ltd Absorption heat pump and method of operating absorption heat pump
CN103728105A (en) * 2013-12-31 2014-04-16 苏州宝骅机械技术有限公司 Quantitative leak detection device of pressure system
CN204007693U (en) * 2014-04-14 2014-12-10 北京国信智科科技有限公司 A kind of sealed packet vanning environmental parameter detection system
CN206960737U (en) * 2017-03-24 2018-02-02 中国南方电网有限责任公司超高压输电公司贵阳局 A kind of cable splice closure sealing monitoring system

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