CN203964940U - Calibration tool - Google Patents
Calibration tool Download PDFInfo
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- CN203964940U CN203964940U CN201420276463.6U CN201420276463U CN203964940U CN 203964940 U CN203964940 U CN 203964940U CN 201420276463 U CN201420276463 U CN 201420276463U CN 203964940 U CN203964940 U CN 203964940U
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Abstract
The utility model discloses a kind of calibration tool, for carrying out accuracy calibration to examining stifled equipment, wherein calibration tool comprises flow-through device, monitoring equipment and conditioning equipment; The entrance of flow-through device is connected with the outlet of the stifled equipment of inspection, and the outlet of flow-through device is connected with the entrance of monitoring equipment; Conditioning equipment is electrically connected to flow-through device, the flow while flowing through flow-through device for regulating by the fluid of examining the outlet outflow of stifled equipment; Monitoring equipment is arranged on conditioning equipment, the first-class value when monitoring and showing that fluid is flowed through flow-through device; According to the second value of first-class value and the stifled equipment demonstration of inspection, examine the calibration of stifled equipment.Flow when it regulates fluid to flow through flow-through device by conditioning equipment, the various states of the heat exchanger system of the stifled equipment Inspection of simulation inspection, accuracy and validity while effectively having improved the stifled equipment Inspection heat exchanger system of inspection.
Description
Technical field
The utility model relates to household electrical appliance detection field, particularly relates to a kind of calibration tool.
Background technology
Because small-pipe diameter heat exchanger (caliber≤5mm) has effective minimizing refrigerant charge and the advantage that reduces heat interchanger cost, therefore, air conditioner industry adopts small-pipe diameter heat exchanger at present mostly.But small-pipe diameter heat exchanger is because caliber size is less than normal, strengthening in wire bonding difficulty while causing it to be applied in air conditioner.Easily there is in process of production the phenomenon that weldering is stifled, affect refrigeration or the heating effect of air conditioner complete machine.
For stopping to weld stifled product, be applied in air conditioner, conventionally can increase the stifled equipment of inspection at production line small-pipe diameter heat exchanger is detected.Before the stifled equipment of employing inspection detects small-pipe diameter heat exchanger, in order to guarantee to examine accuracy and the validity of stifled equipment Inspection, need to calibrate examining stifled equipment.At present, for to calibrate the frock of the stifled equipment of inspection be various small-pipe diameter heat exchangers in complete stifled, half stifled and 1/3rd exemplars when stifled.
Because the exemplar adopting is that according to small-pipe diameter heat exchanger prepared by the caliber when entirely blocking up, partly blocking up and 1/3rd is stifled, in preparation process, there is certain error.Therefore, this exemplar has larger error in flow value and accuracy, has affected the accuracy of the stifled equipment Alignment result of inspection.And larger for calibrating the exemplar volume of the stifled equipment of inspection, quantity is more, is unfavorable for management and using.
Utility model content
Based on this, being necessary, for adopting exemplar to calibrate the accuracy and the problem that is unfavorable for management and using that affects calibration result when equipment is blocked up in inspection, provides a kind of calibration tool.
A kind of calibration tool providing for realizing the utility model object, for carrying out accuracy calibration to examining stifled equipment, comprises flow-through device, monitoring equipment and conditioning equipment;
The entrance of described flow-through device is connected with the outlet of the stifled equipment of described inspection, and the outlet of described flow-through device is connected with the entrance of described monitoring equipment;
Described conditioning equipment is electrically connected to described flow-through device, the flow when regulating the fluid being flowed out by the outlet of the stifled equipment of described inspection to flow through described flow-through device;
Described monitoring equipment is arranged on described conditioning equipment, the first-class value when monitoring and showing that described fluid is flowed through described flow-through device;
According to the second value of described first-class value and the stifled equipment demonstration of described inspection, the stifled equipment of described inspection is calibrated.
In an embodiment, described flow-through device is electric expansion valve therein, and described conditioning equipment is electronic expansion valve opening regulator;
Described electronic expansion valve opening regulator is electrically connected to described electric expansion valve, opens the flow while regulating described fluid to flow through described electric expansion valve for controlling described electric expansion valve to preset opening value.
In an embodiment, described monitoring equipment is flowmeter therein; Described flowmeter is provided with flow indication panel, for showing described first-class value.
In an embodiment, described electronic expansion valve opening regulator arranges valve body valve position panel therein, for showing the aperture of described electric expansion valve.
In an embodiment, described valve body valve position panel is comprised of LED charactron therein.
Therein in an embodiment, being connected of the outlet of the entrance of described flow-through device and the stifled equipment of described inspection, and the outlet of described flow-through device and connecting by metal tube being connected all of the entrance of described monitoring equipment.
The beneficial effect of above-mentioned calibration tool is: by the entrance of flow-through device is connected with the outlet of the stifled equipment of inspection, the outlet of flow-through device is connected with the entrance of monitoring equipment, fluid is flowed through successively and examine stifled equipment, flow-through device and monitoring equipment.At fluid, flow through successively and examine in the process of stifled equipment, flow-through device and monitoring equipment, flow while regulating fluid to flow through flow-through device by conditioning equipment, to simulate the state (state of heat exchanger system comprises complete stifled state, half stifled state, 1/3rd stifled state and micro-stifled states) of the heat exchanger system of the stifled equipment Inspection of inspection.And the first-class value by monitoring equipment Real-Time Monitoring and while showing that fluid is flowed through flow-through device, while flowing through the stifled equipment of inspection according to this first-class value and fluid, the second value that the stifled equipment of inspection shows, whether the precision of the stifled equipment of judgement inspection is qualified, examines the accuracy calibration of stifled equipment.
Flow when it regulates fluid to flow through flow-through device by conditioning equipment, the various states of the heat exchanger system of the stifled equipment Inspection of simulation inspection accurately; And monitor and first-class value when the fluid that shows flows through flow-through device by monitoring equipment, when monitoring fluid is flowed through the stifled equipment of inspection, the accuracy of the second value that the stifled equipment of inspection shows, accuracy and validity while effectively having improved the stifled equipment Inspection heat exchanger system of inspection, solved the problem that affects the accuracy of calibration result while adopting the stifled equipment of exemplar calibration inspection.
And, flow while regulating fluid to flow through flow-through device by conditioning equipment, can simulate accurately the various states of heat exchanger system, as: stifled state, half stifled state, 1/3rd block up state and micro-stifled states entirely, replaced the use of multiple exemplar, not only save the cost of making exemplar, also helped the management and using of calibration tool.
Accompanying drawing explanation
Fig. 1 is the electric expansion valve schematic diagram in calibration tool one specific embodiment;
Fig. 2 is the electronic expansion valve opening regulator schematic diagram in calibration tool one specific embodiment;
Fig. 3 is the flowmeter schematic diagram in calibration tool one specific embodiment;
Fig. 4 is calibration tool one specific embodiment schematic diagram;
Fig. 5 is the schematic diagram of calibration tool one specific embodiment while calibrating.
Embodiment
For making technical solutions of the utility model clearer, below in conjunction with drawings and the specific embodiments, the utility model is described in further details.
A calibration tool, for carrying out accuracy calibration to examining stifled equipment, comprises flow-through device, monitoring equipment and conditioning equipment.
The entrance of flow-through device is connected with the outlet of the stifled equipment of inspection, and the outlet of flow-through device is connected with the entrance of monitoring equipment, fluid is flowed through successively and examine stifled equipment, flow-through device and monitoring equipment.
Conditioning equipment is electrically connected to flow-through device, flow while flowing through flow-through device for regulating by the fluid of examining the outlet outflow of stifled equipment, with simulation inspection, block up the various states of the heat exchanger system of equipment Inspection, as: state, half stifled state, 1/3rd stifled state or micro-stifled states entirely blocked up.
Monitoring equipment is arranged on conditioning equipment, the first-class value when monitoring and showing that fluid is flowed through flow-through device.
According to the second value of first-class value and the stifled equipment demonstration of inspection, to examining stifled equipment, calibrate.
Because heat exchanger system is small-pipe diameter heat exchanger (general caliber=5mm), therefore when being welded to electrical equipment, easily there is the stifled phenomenon of weldering, cause heat exchanger system to have one or more in complete stifled state, half stifled state, 1/3rd stifled states and micro-stifled state.Heat exchanger system in electrical equipment is complete stifled state, half stifled state, 1/3rd stifled state or micro-stifled states, conventionally adopts the stifled equipment of inspection to detect being welded to the heat exchanger system of electrical equipment.Before detection, first need to calibrate examining the precision of stifled equipment.
To examining stifled equipment, calibrate adopted calibration tool, by the flow of conditioning equipment when regulating fluid to flow through flow-through device is set, simulate accurately the various states of heat exchanger system.And the first-class value while the fluid monitoring being flowed through to flow-through device by monitoring equipment shows in real time, while flowing through the stifled equipment of inspection to reach monitoring fluid, the object of the accuracy of the second value that the stifled equipment of inspection shows, and then examine the calibration of stifled equipment.
Flow when it regulates fluid to flow through flow-through device by conditioning equipment, various states with simulation heat exchanger system, avoided existing employing exemplar to examine the larger phenomenon of calibration time error of stifled equipment, prevented from because examining stifled equipment precision calibration error, causing more greatly existing weldering to block up the outflow of the product of phenomenon in production run.And the first-class value while the fluid monitoring being flowed through to flow-through device by monitoring equipment shows in real time, while flowing through the stifled equipment of inspection to reach monitoring fluid, the object of the accuracy of the second value that the stifled equipment of inspection shows.Effectively improve accuracy and the validity of to examining stifled equipment, calibrating, realized upgrading and the optimization of to examining stifled equipment, calibrating, while having solved the stifled equipment of existing employing exemplar calibration inspection, affected the problem of calibration result accuracy.
And, by conditioning equipment, regulate the flow through flow of flow-through device of fluid, simulate the various states of heat exchanger system, avoided the phenomenon that adopts multiple exemplar to calibrate examining stifled equipment, when reducing the cost of making multiple exemplar, be also convenient to the management and using of calibration tool.
As a kind of embodiment, flow-through device can be electric expansion valve, and conditioning equipment is electronic expansion valve opening regulator; Monitoring equipment can be flowmeter.The calibration tool that following examples all be take after electric expansion valve, electronic expansion valve opening regulator and flowmeter assembling is example, and calibration tool is described.
Referring to Fig. 1 and Fig. 2, be respectively the structural representation of the electric expansion valve 100 in calibration tool one specific embodiment and the structural representation of electronic expansion valve opening regulator 200.Wherein, electric expansion valve 100 comprises solenoid 110.After solenoid 110 energisings, according to the size that is carried in the voltage of solenoid 110, control the size of the pin valve opening of electric expansion valve 100, and then regulate the flow of the fluid of the electric expansion valve 100 of flowing through.
Wherein, the size that is carried in the voltage of solenoid 110 is controlled by electronic expansion valve opening regulator 200.Control button 210 by operation setting on electronic expansion valve opening regulator 200, electric expansion valve 100 is opened to preset opening value, reach the object of the flow while regulating fluid to flow through electric expansion valve 100, simulate accurately the various states of heat exchanger system.As:
When the stifled equipment of inspection is during for detection of heat exchanger system in air-conditioning system, its fluid passing into is cold-producing medium.By regulating electronic expansion valve opening regulator 200, when electric expansion valve 100 is opened with the first preset value, the flow that now regulates the cold-producing medium of the electric expansion valve 100 of flowing through is the flow of simulation heat exchanger system cold-producing medium when complete stifled state.In this case, first-class value close to or equal 0L/s (rise/second), the first preset value value of its correspondence is 250.
When regulating electronic expansion valve opening regulator 200, when electric expansion valve 100 is opened with the second preset value, the flow of the cold-producing medium of the electric expansion valve 100 of flowing through now regulating is the flow of the cold-producing medium of simulation heat exchanger system when half stifled state.Now, first-class value is 70L/s, and the value of the second preset value of its correspondence is 150.
When regulating electronic expansion valve opening regulator 200, when electric expansion valve 100 is opened with the 3rd preset value, the flow of the cold-producing medium of the electric expansion valve 100 of flowing through now regulating is the flow of the cold-producing medium of simulation heat exchanger system when 1/3rd block up state.Now, first-class value is 95L/s, and the value of the 3rd preset value of its correspondence is 50.
When regulating electronic expansion valve opening regulator 200, when electric expansion valve 100 is opened with the 4th preset value, now regulating the flow of the cold-producing medium of the electric expansion valve 100 of flowing through is the flow of heat exchanger system cold-producing medium when micro-stifled state.Now, first-class value is 120L/s, and the value of the 4th preset value of its correspondence is 20.
By regulating electronic expansion valve opening regulator 200, and then the aperture of adjusting electric expansion valve 100, simulate the various states of heat exchanger system, as stifled state, half stifled state, 1/3rd stifled state and micro-stifled states entirely, accuracy and validity when examining stifled equipment and calibrate have effectively been improved.
In an embodiment, electronic expansion valve opening regulator 200 can be provided with valve body valve position panel 220 therein, and this valve body valve position panel 220 can be comprised of LED (Light Emitting Diode) charactron.When the aperture of button 210 adjusting electric expansion valves 100 is controlled in operation, valve body valve position panel 220 shows the aperture that electric expansion valve 100 is opened in real time.By valve body valve position panel 220, show in real time the aperture that electric expansion valve 100 is opened, whether aperture that can real time inspection electric expansion valve 100 reaches default opening value, guarantee the accuracy of the aperture that electric expansion valve 100 is opened, and then guaranteed the accuracy of the various states of simulation heat exchanger system.
Referring to Fig. 3, it is the structural representation of the flowmeter of calibration tool one specific embodiment.Wherein, flowmeter 300 is provided with flow indication panel 310, by flow indication panel 310, shows in real time the first-class value of the fluid of the electric expansion valve 100 of flowing through that flowmeter 300 monitors, be convenient to monitoring fluid and flow through while examining stifled equipment, the accuracy of the second value that the stifled equipment of inspection shows.As:
When the state that the first-class value showing when flow indication panel 310 is simulation heat exchanger system is the flow value of the fluid while entirely blocking up state, the second value that the stifled equipment of now inspection shows should be consistent with first-class value.If inconsistent, the precision that shows to examine stifled equipment is inadequate, needs to regulate the bleed pressure size of the stifled equipment of inspection, and whether the pipeline of the stifled equipment of checking side by side leaks gas.If consistent, show that the precision of examining stifled equipment meets the standard that heat exchanger system detects, can carry out next step operation (detection heat exchanger system).
In like manner, the first-class value showing when flow indication panel 310 is for simulation heat exchanger system during in half stifled state, 1/3rd stifled states or micro-stifled state during corresponding flow value, and the principle of the second value accuracy showing by the stifled equipment of first-class value monitoring inspection is same as above.
Referring to Fig. 4 and Fig. 5, be respectively structural representation and the calibration process schematic diagram of calibration tool one specific embodiment.Concrete, adopt calibration tool one specific embodiment to the process of examining stifled equipment and calibrating to be:
First, the entrance of the electric expansion valve in calibration tool 100 is connected with the outlet 410 of the stifled equipment 400 of inspection.Wherein, the entrance of electric expansion valve 100 is connected with the pipeline that is connected to of the outlet 410 of the stifled equipment 400 of inspection; And in calibration tool, being connected of the entrance of the outlet of electric expansion valve 100 and flowmeter 300 is similarly pipeline and connects.The connecting pipe adopting can be metal tube, as: copper pipe.
After the outlet 410 of the entrance of electric expansion valve 100 and the stifled equipment 400 of inspection is connected, open the switch 500 of calibration tool, and start the stifled equipment 400 of inspection.
Control button 210 on operation electronic expansion valve opening regulator 200, making the opening value (opening value that valve body valve position panel 220 shows) of electric expansion valve 100 is default opening value, the various states of simulation heat exchanger system (stifled state, half stifled state, 1/3rd stifled state and micro-stifled states entirely).Meanwhile, whether the first-class value that the flow indication panel 310 of contrast flowmeter 300 shows is all consistent with normal stream value with the second value that the stifled equipment 400 of inspection shows, and then judges that whether the precision of the stifled equipment 400 of inspection is qualified.
It should be noted that, normal stream value be heat exchanger system respectively when complete stifled state, half stifled state, 1/3rd stifled states and micro-stifled state, the flow value of the fluid that the stifled equipment of corresponding inspection is flowed through.
When judging that the precision of the stifled equipment 400 of inspection is defective, be that the flow indication panel 310 of the flowmeter 300 first-class value and the normal stream value that show are inconsistent, or the second value that shows of the stifled equipment 400 of inspection and normal stream value are when inconsistent, need to regulate the bleed pressure size on the stifled equipment 400 of inspection, and investigate examining the pipeline gas leakage situation of stifled equipment 400.
When the pipeline of stifled equipment 400 being detected and have gas leak phenomenon, change after the pipeline of gas leakage on the stifled equipment 400 of inspection, regulate the bleed pressure size of the stifled equipment 400 of inspection, and again operate the control button 210 on electronic expansion valve opening regulator 200, make the opening value of electric expansion valve 100 for default opening value, examine the calibration of stifled equipment 400.
When the pipeline of stifled equipment 400 being detected and not having gas leak phenomenon, only need to regulate the bleed pressure size of the stifled equipment 400 of inspection, and again operate the control button 210 on electronic expansion valve opening regulator 200, the opening value that makes electric expansion valve 100 is default opening value, examine the calibration of stifled equipment 400, until the precision of the stifled equipment 400 of inspection is qualified.
When the second value that the first-class value showing when the flow indication panel 310 of flowmeter 300 and the stifled equipment 400 of inspection show is all consistent with normal stream value, judge that the stifled equipment precision of inspection is accurate, can carry out next step operation (detection heat exchanger system), so far complete the calibration of the stifled equipment of whole inspection.
By electronic expansion valve opening regulator and flowmeter in calibration tool, simulate accurately complete stifled state, half stifled state, 1/3rd stifled states and micro-stifled state etc. of heat exchanger system, effectively improve the precision of the stifled equipment of inspection, guaranteed accuracy when the stifled equipment of inspection detects.
As a concrete calibration tool of implementing, use the aperture of electronic expansion valve opening regulator adjusting electric expansion valve, simulate accurately the various states of heat exchanger system.Meanwhile, the accuracy of the flow of the fluid that the stifled equipment of the digital display function of the flow indication panel of use traffic meter monitoring inspection shows, thus improved stability and the accuracy of examining stifled equipment.And optimized the outward appearance of calibration tool, be convenient to putting and using of calibration tool.
The above embodiment has only expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (6)
1. a calibration tool, for carrying out accuracy calibration to examining stifled equipment, is characterized in that, comprises flow-through device, monitoring equipment and conditioning equipment;
The entrance of described flow-through device is connected with the outlet of the stifled equipment of described inspection, and the outlet of described flow-through device is connected with the entrance of described monitoring equipment;
Described conditioning equipment is electrically connected to described flow-through device, the flow when regulating the fluid being flowed out by the outlet of the stifled equipment of described inspection to flow through described flow-through device;
Described monitoring equipment is arranged on described conditioning equipment, the first-class value when monitoring and showing that described fluid is flowed through described flow-through device;
According to the second value of described first-class value and the stifled equipment demonstration of described inspection, the stifled equipment of described inspection is calibrated.
2. calibration tool according to claim 1, is characterized in that, described flow-through device is electric expansion valve, and described conditioning equipment is electronic expansion valve opening regulator;
Described electronic expansion valve opening regulator is electrically connected to described electric expansion valve, opens the flow while regulating described fluid to flow through described electric expansion valve for controlling described electric expansion valve to preset opening value.
3. calibration tool according to claim 1 and 2, is characterized in that, described monitoring equipment is flowmeter; Described flowmeter is provided with flow indication panel, for showing described first-class value.
4. calibration tool according to claim 2, is characterized in that, described electronic expansion valve opening regulator arranges valve body valve position panel, for showing the aperture of described electric expansion valve.
5. calibration tool according to claim 4, is characterized in that, described valve body valve position panel is comprised of LED charactron.
6. calibration tool according to claim 1, is characterized in that, being connected of the outlet of the stifled equipment of the entrance of described flow-through device and described inspection, and the outlet of described flow-through device and connecting by metal tube being connected all of the entrance of described monitoring equipment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276463.6U CN203964940U (en) | 2014-05-27 | 2014-05-27 | Calibration tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420276463.6U CN203964940U (en) | 2014-05-27 | 2014-05-27 | Calibration tool |
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| CN203964940U true CN203964940U (en) | 2014-11-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019842A (en) * | 2014-05-27 | 2014-09-03 | 格力电器（合肥）有限公司 | Calibration fixture and calibration method |
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2014
- 2014-05-27 CN CN201420276463.6U patent/CN203964940U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104019842A (en) * | 2014-05-27 | 2014-09-03 | 格力电器（合肥）有限公司 | Calibration fixture and calibration method |
| CN104019842B (en) * | 2014-05-27 | 2016-08-31 | 格力电器（合肥）有限公司 | Calibration tool and calibration steps |
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