CN2178893Y - Condenser Leak Detector - Google Patents
Condenser Leak Detector Download PDFInfo
- Publication number
- CN2178893Y CN2178893Y CN 93247736 CN93247736U CN2178893Y CN 2178893 Y CN2178893 Y CN 2178893Y CN 93247736 CN93247736 CN 93247736 CN 93247736 U CN93247736 U CN 93247736U CN 2178893 Y CN2178893 Y CN 2178893Y
- Authority
- CN
- China
- Prior art keywords
- pressure transducer
- condenser
- leak locator
- circuit
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 230000003321 amplification Effects 0.000 claims description 2
- 238000009413 insulation Methods 0.000 claims description 2
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 5
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 238000000034 method Methods 0.000 description 4
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229940059082 douche Drugs 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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- Examining Or Testing Airtightness (AREA)
Abstract
The utility model relates to a condenser vacuum system water detection appearance, it is by pressure sensor, voltage stabilizing circuit, amplifier circuit comparison circuit board, emitting diode, earphone socket, the display screen is constituteed. The sensor converts the pressure difference signal into an electric signal, and the electric signal is amplified and then is connected with the display screen, the earphone and the light-emitting diode to realize pressure display and sound and light alarm. The leak detector is simple to operate, stable in performance, reliable in alarm, high in leakage detection rate, accurate in positioning and capable of improving economic benefits.
Description
The utility model belongs to the leak detection field of the condenser of water vapour or other steam, is specifically related to a kind of condenser leak locator.
Condenser leaks the safety and economic operation influence of thermal power plant very big, the airtight degree of condenser vacuum system is the important step that concerns unit efficiency, if the every decline one percentage point of its vacuum tightness, unit output reduces one percentage point approximately, 1-1.5 percentage point of coal consumption rising.As seen, the condenser vacuum system imprecision directly influences the efficient of unit.The corrosion of condenser tube is the root that causes the fouling of boiler unit burn into, salification, and regular meeting causes boiler large tracts of land booster.Therefore, the leak detection of condenser is the problem that people pay close attention to.Countries in the world all take much count of the research of condenser watertightness and impermeability monitoring, diagnosing.Wherein, the main using gases detecting instrument of bubble-tight leak hunting technology such as halogen leak detector, Helium leak detector etc., this several method is adapted to the leak detection of gas circuit.It is film applicator coating, candlelight method, douche that traditional water is surveyed the watertightness leak detecting, and these methods are simpler and cruder, and recall rate is low, leakage detection, and the leak stopping difficulty does not have more advanced method so far as yet.Therefore, adopt the advanced leak hunting technology link that is absolutely necessary.
The purpose of this utility model is surveyed leak detection for condenser vacuum system water exactly a kind of leak detection rate height is provided, and is simple to operate, stable performance, the reliable instrument of accurate positioning.
The technical solution of the utility model is: working pressure sensor sensing leakage hole pressure changes, and will become electric signal because of leaking the pressure differential signal transition that produces, and by amplifying circuit signal is amplified again, passes through alarm equipment alarm again.If can realize acoustic alarm, can realize the light warning by light crossing-signal by the acoustic alarm device.Can realize digital display alarm by display screen.This instrument has been realized the instrumentation leak detection of condenser water survey watertightness.This condenser leak locator comprises insulation crust, pressure transducer, wiring board, power supply, audible-visual annunciator, display screen, alarm set point adjusting, switch, zeroing.Link to each other with signal amplification circuit behind the pressure transducer, and then link to each other with acoustic alarm device, light crossing-signal and display screen.Light crossing-signal is a light emitting diode, the acoustic alarm device is earphone or hummer, circuit connects for connecing the constant current source power supply circuit behind two joints of pressure transducer, connect the two-way voltage follower circuit behind other two joints of pressure transducer, output connects amplifying circuit, connect voltage comparator circuit behind the amplifying circuit, output terminal joins with alarm respectively.Leak locator can be with the sensor circuit part, and the part of reporting to the police is installed together, and forms the integral type leak locator, also can be made into split type.
Physical circuit connects as follows,
With reference to circuit diagram 3, reliable for the more stable work that makes sensor, adopt resistance R
1, R
2, the constant current source power supply circuit that reference voltage source and transistor are formed can be realized not temperature influence of signal of sensor like this.
For making subsequent conditioning circuit not be subjected to the influence of sensor impedance, improve input impedance, with operational amplifier A
1, A
2Be connected into the two-way voltage follower circuit, play isolated amplifier A
3With the effect of sensor, thereby realized A
3Be not subjected to the influence of sensor impedance, regulator potentiometer VR
1Can compensate input offset voltage, realize zeroing.With reference to Fig. 3, this circuit is with operational amplifier A
4Be connected into voltage comparator circuit, potentiometer VR
2Be to regulate alarm set point, when prime output surpasses certain value, operational amplifier A
4The output signal upset, realization sound, light are reported to the police.
The utility model has following accompanying drawing;
Fig. 1 is the utility model front elevation;
Fig. 2 is the utility model outside drawing;
Fig. 3 is the utility model circuit diagram;
Fig. 4 is the utility model operation chart.
1 is display screen among Fig. 1,2 screws, 3 zero potentiometers, 4 cutting-off switches, 5 wiring boards, 6 batteries, 7 light crossing-signals, 8 alarm set point regulator potentiometers, 9 acoustic alarm devices, 10 sensors, 11 shells.
Embodiment 1:
Present embodiment is split type.Use commercially available pressure transducer 10, join by lead and wiring board 5, connect display screen 1 behind the wiring board 5, light crossing-signal 7, acoustic alarm device 9, power supply is supplied with by battery 6, cutting-off switch 4 is housed on shell 11, alarm set point is housed on the dashboard face regulates 8, zero potentiometer 3, part all is contained in the shell 11 except that sensor, by screw 2 fastening shells 11.Sheathing material is plastics.
Physical circuit connects as follows, and the pressure transducer model is 24PCEFAIG, resistance R
1, R
2R
3With three grades of transistor Ts
1, T
2Diode D
1Form the constant current source power supply circuit.The triode model is that Fig. 3 is seen in the 3DG12C connection.It can make the more stable work of pressure transducer, realizes that output is not subjected to Temperature Influence.
For making subsequent conditioning circuit not be subjected to the influence of sensor impedance, improve input impedance.By operational amplifier A
1And A
2Form the two-way voltage follower, model is CA3140, and wherein signal of sensor is input to A respectively
1And A
2In-phase input end, its inverting input connects output, passes through R then respectively
6, R
7Input operational amplifier A
3, model is CA3140, VR
1Be potentiometer, it is A
3External zero potentiometer 3, it can transfer to zero with the output residual voltage, realizes operational amplifier A like this
3Be not subjected to the influence of sensor impedance, the concrete connection seen Fig. 3.
A
3Output terminal and resistance R
10One end links to each other, R
10The other end and model be the operational amplifier A of μ A741
4 Pin 3 joins, A
4Pin two and potentiometer VR
2Link to each other, by R
10, A
4, VR
2, R
11R
12Form voltage comparator circuit, by VR
2Regulate alarm set point B, A
4Output connect light crossing-signal 7 it be light emitting diode and acoustic alarm device 9, it is earphone or hummer.
Embodiment 2: present embodiment is an integral type.
Pressure transducer and circuit, demonstration, warning part are installed in the plastic casing as one, and other structures are with embodiment 1.
According to the condenser leak locator of such scheme manufacturing can adapt to well power station environment, simple to operate, influenced by human factor minimum, stable performance, it is reliable to report to the police; intuitively, leak the recall rate height, accurate positioning; can shorten leakage detection and load down stop time greatly, improve economic benefit.
Claims (5)
1, a kind of condenser leak locator comprises insulation crust (1r), pressure transducer (10), wiring board (5), power supply (6) is characterized in that: pressure transducer (10) back links to each other with signal amplification circuit, and then with acoustic alarm device (9), light crossing-signal (7) and display screen (1) link to each other.
2, condenser leak locator according to claim 1, it is characterized in that: connect the constant current source power supply circuit behind two joints of pressure transducer (10), connect the two-way voltage follower circuit behind other two joints of pressure transducer (10), output connects amplifying circuit, connect voltage comparator circuit behind the amplifying circuit, output terminal joins with alarm respectively.
3, condenser leak locator according to claim 1 is characterized in that: light crossing-signal (7) is a light emitting diode.
4, condenser leak locator according to claim 1 is characterized in that: acoustic alarm device (9) is earphone or hummer.
5, condenser leak locator according to claim 1 is characterized in that: pressure transducer (10) can be made integral type with the leak locator other parts, also can be made into split type.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247736 CN2178893Y (en) | 1993-12-29 | 1993-12-29 | Condenser Leak Detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93247736 CN2178893Y (en) | 1993-12-29 | 1993-12-29 | Condenser Leak Detector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2178893Y true CN2178893Y (en) | 1994-10-05 |
Family
ID=33820064
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93247736 Expired - Fee Related CN2178893Y (en) | 1993-12-29 | 1993-12-29 | Condenser Leak Detector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2178893Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346148C (en) * | 2003-08-16 | 2007-10-31 | 赵东楼 | Steam condenser copper tube foam leak-detecting liquid |
| CN102288371A (en) * | 2011-07-26 | 2011-12-21 | 王万年 | Air leakage detector |
| WO2016197309A1 (en) * | 2015-06-09 | 2016-12-15 | 深圳明珠盈升科技有限公司 | Leakage detection sensor and leakage detection method therefor |
-
1993
- 1993-12-29 CN CN 93247736 patent/CN2178893Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100346148C (en) * | 2003-08-16 | 2007-10-31 | 赵东楼 | Steam condenser copper tube foam leak-detecting liquid |
| CN102288371A (en) * | 2011-07-26 | 2011-12-21 | 王万年 | Air leakage detector |
| WO2016197309A1 (en) * | 2015-06-09 | 2016-12-15 | 深圳明珠盈升科技有限公司 | Leakage detection sensor and leakage detection method therefor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |