CN114018495A - Condenser tracing online leak detection device and leak detection method - Google Patents
Condenser tracing online leak detection device and leak detection method Download PDFInfo
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- 239000000700 radioactive tracer Substances 0.000 claims abstract description 71
- 238000002347 injection Methods 0.000 claims abstract description 60
- 239000007924 injection Substances 0.000 claims abstract description 60
- 238000001802 infusion Methods 0.000 claims abstract description 34
- 238000002835 absorbance Methods 0.000 claims abstract description 26
- 238000005070 sampling Methods 0.000 claims abstract description 10
- 238000012546 transfer Methods 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims description 16
- 239000007788 liquid Substances 0.000 claims description 16
- 238000011010 flushing procedure Methods 0.000 claims description 14
- 238000010521 absorption reaction Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 6
- 230000031700 light absorption Effects 0.000 claims description 6
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- CHHHXKFHOYLYRE-UHFFFAOYSA-M 2,4-Hexadienoic acid, potassium salt (1:1), (2E,4E)- Chemical compound [K+].CC=CC=CC([O-])=O CHHHXKFHOYLYRE-UHFFFAOYSA-M 0.000 claims description 3
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- DWAQJAXMDSEUJJ-UHFFFAOYSA-M Sodium bisulfite Chemical compound [Na+].OS([O-])=O DWAQJAXMDSEUJJ-UHFFFAOYSA-M 0.000 claims description 3
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Images
Classifications
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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
- G01M3/04—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point
- G01M3/20—Investigating fluid-tightness of structures by using fluid or vacuum by detecting the presence of fluid at the leakage point using special tracer materials, e.g. dye, fluorescent material, radioactive material
Abstract
The invention discloses a condenser tracing on-line leak detection device and a leak detection method, wherein the device comprises: tracer storage tank, solenoid valve, syringe pump, demineralized water tank, transfer pump, ration ring, tracer detector, automatic control cabinet etc.. When the condenser leaks, firstly, desalted water is controlled by a control cabinet to wash a pipeline of a detection system, then tracers are respectively injected into two water chambers of a low back pressure inlet of the condenser through an injection pump, after a certain time of waiting is carried out after each injection, the tracers can leak into condensed water along with circulating water, a sampling electromagnetic valve at an outlet of the condensed water pump is opened, the condensed water mixed with the tracers enters a tracer detection system through an infusion pump, the ultraviolet absorbance of the tracers is tested, when the ultraviolet absorbance exceeds a set value, the leakage of the condenser at the circulating water side is indicated, then the tracers are injected into a middle return pipe of a high back pressure water chamber and a low back pressure water chamber of the condenser at the leakage side, the absorbance exceeds the set value and is the high back pressure side leakage, and the absorbance is lower than the set value and is the low back pressure side leakage.
Description
Technical Field
The invention relates to the technical field of leakage detection of condensers, in particular to tracking online leakage detection equipment and a leakage detection method for a condenser.
Background
Condenser leakage is one of important hidden troubles which plague the safe operation of a thermal power plant for a long time, in particular a coastal seawater cooling power plant. If the condenser cannot be found and treated in time after leakage, cooling water can be leaked into condensed water outside the pipe, on one hand, the vacuum degree is deteriorated, on the other hand, the polluted condensed water can form scale on the heating surface of the boiler, the heat exchange efficiency is reduced, even a pipe explosion accident occurs, the quality of steam can be reduced, and the safe operation of a unit can be seriously influenced.
In contrast, in the existing condenser leak detection technology, a hydrogen conductivity meter is generally used for monitoring a hydrogen conductivity index of a water sample, the hydrogen conductivity index is used as an important basis for whether the condenser leaks, sampling points are arranged in a hot well of the condenser, condensed water is pumped out of the condenser through a vacuum pump, a leak area is judged by detecting the hydrogen conductivity or impurity ion concentration of water samples at different sampling points, and the conditions of poor sampling representativeness and cross contamination of the water sample exist; and adopt helium leak hunting technique, blow off the helium at the suspected air leak-in position, carry out the gas sampling on condenser vapour side vacuum pump outlet main pipe, introduce the helium mass spectrometer with the sample gas, judge whether leak through the change of helium mass spectrometer reading, adopt this kind of mode, need follow many times and leak the position and let in the helium, the uncertainty is great, and secondly the diffusion velocity of gas in the gas-liquid two-phase is slower, and leak hunting cost is higher.
Disclosure of Invention
Aiming at the defects in the prior art, the invention discloses leakage detection equipment which is simple in structure, easy to operate and capable of quickly positioning a condenser leakage point.
In order to achieve the purpose, the invention adopts the technical scheme that:
a condenser tracer online leak detection device comprises a dosing system, a pipeline cleaning system, a sample introduction system, a tracer detection system and a control cabinet which are connected with each other; the dosing system comprises a tracer storage tank 1, a dosing system electromagnetic valve 2, an injection pump 3 and an electromagnetic five-way valve 4, wherein the dosing system electromagnetic valve 2 is respectively connected with an outlet of the tracer storage tank 1 and an inlet of the injection pump 3 through pipelines; the injection pump 3 is respectively connected with the outlet of the dosing system electromagnetic valve 2 and the inlet of the electromagnetic five-way valve 4 through pipelines; the outlet a, the outlet B, the outlet c and the outlet d of the electromagnetic five-way valve 4 are respectively and correspondingly connected with an inlet B5-8 of a condenser high back pressure water chamber, an inlet A5-6 of the condenser high back pressure water chamber, an inlet A5-3 of a condenser low back pressure water chamber and an inlet B5-1 of the condenser low back pressure water chamber through pipelines; the pipeline cleaning system comprises a demineralized water tank 12, a pipeline cleaning system electromagnetic valve 14 and an electromagnetic three-way valve 8, wherein the pipeline cleaning system electromagnetic valve 14 is connected with an outlet of the demineralized water tank 12 and an inlet of the electromagnetic three-way valve 8b through a pipeline; the sample injection system comprises a sample injection system electromagnetic valve 7, an electromagnetic three-way valve 8, a liquid transfer pump 9 and a quantitative ring 10, wherein the sample injection system electromagnetic valve 7 is respectively connected with an inlet of the electromagnetic three-way valve 8a and an outlet pipeline of a condensate pump 6 of a condenser hot-well water inlet 5-9 through pipelines, and the electromagnetic three-way valve 8 is respectively connected with an outlet of the sample injection system electromagnetic valve 7 and an inlet of the liquid transfer pump 9 through pipelines; the infusion pump 9 is respectively connected with the outlet of the electromagnetic three-way valve 8 and the quantitative ring 10 through pipelines; the tracer detection system is composed of a tracer detector 11; the control cabinet 13 comprises an automatic controller 13-1 and a display 13-2, and the automatic controller 13-1 is connected with the display 13-2 through a signal transmission line.
The control cabinet 13 is connected with a 220-380V alternating current power supply through a power adapter.
The automatic controller 13-1 is internally provided with a PLC control module, a controller of a PLC judgment module, a serial server and an external human-machine operation interface, the injection speed of the injection pump 3, the operation time of the injection pump, the flushing time of the desalted water, the volume flow of the infusion pump 9, the ultraviolet absorption wavelength and the feedback value control parameters of the ultraviolet absorbance are input on line on the human-machine interface, the injection pump 3, the electromagnetic five-way valve 4, the electromagnetic three-way valve 8, the dosing system electromagnetic valve 2 and the infusion pump 9 are controlled, serial communication is also carried out through the serial server, and a notice is sent.
The display 13-2 is one of an LCD, an LED and an OLED, and the absorbance value is displayed through the display and transmitted to the controller.
The tracer detector 11 is an ultraviolet spectrophotometer, the ultraviolet full-wavelength scanning range is 200-380 nm, the absorbance value of a water sample can be continuously monitored, and a detection pool contained in the tracer detector 11 is a quartz cuvette.
The quantitative ring 10 is a stainless steel or PEEK quantitative ring, and the volume is 5000 mu L; the infusion pump 9 is a constant flow pump and has a double-plunger structure, and the volume flow of the infusion pump 9 is continuously adjustable within the range of 0.05-1.0 mL/s; the inlet position of the electromagnetic three-way valve 8 is controlled by the automatic controller 13-1 to be switched into an inlet a or an inlet b.
The tracer storage tank 1 is a cylindrical transparent glass container with scales; the inlet position of the electromagnetic five-way valve 4 is freely switched into an outlet a, an outlet b, an outlet c or an outlet d by the automatic controller 13-1; the injection pump 3 is a single-channel industrial electric injection pump, and the injection speed is continuously adjustable within the range of 5-100 mL/s; the desalting water tank 12 is made of organic glass.
The tracer in the tracer storage tank 1 is one of diphenyl ethylene diphenyl sodium disulfonate, sodium sulfanilate, sodium benzoate, potassium sorbate, sodium thiosulfate, sodium bisulfite and sodium ascorbate, and the concentration of the tracer is 30-50 g/L of aqueous solution.
The leakage detection method of the condenser tracing online leakage detection device comprises the following steps after the condenser 5 leaks:
step (a), connecting a power supply, turning on a power switch of the control cabinet, and supplying power to the control cabinet 13;
step (b), respectively setting an injection speed of 20-30 mL/s of an injection pump, the running time of the injection pump for 2-3 min, the time for flushing with desalted water for 0.5-1 min, the flow rate of the infusion pump for 0.5-1.0 mL/s, the absorption wavelength for 200-400 nm and the absorbance feedback value for 0-1.0 to a human-computer operation interface of the automatic controller 13-1;
step (c), opening an electromagnetic valve 14 of the pipeline cleaning system after the desalting water tank 12, switching a transfusion inlet of an electromagnetic three-way valve 8 to be an inlet b, starting an infusion pump 9, flushing the pipeline, a quantitative ring 10 and a tracer detector 11 according to the time and flow set by a human-computer interface, discharging flushing liquid through a waste liquid outlet of the tracer detector 11, and closing the electromagnetic valve 14 after flushing is finished;
step (d), after the step (c) is executed, a dosing system electromagnetic valve 2 behind a tracer storage tank 1 is opened, an injection pump 3 is started, an infusion outlet of an electromagnetic five-way valve 4 is switched into a c outlet and a d outlet, tracer is sequentially injected into an inlet 5-3 of a condenser low back pressure water chamber A and an inlet 5-1 of a condenser low back pressure water chamber B, the time interval of two injections is 15-25 min, a sample injection system electromagnetic valve 7 behind a condensate pump 6 is opened, an electromagnetic three-way valve 8 is switched into an inlet a, a water sample enters a tracer detector 11 through a quantitative ring 10 under the action of an infusion pump 9, the water sample is discharged through a waste liquid outlet of the tracer detector 11, after the infusion pump 9 runs for 5-15 min, the sample injection system electromagnetic valve 7 is closed, the tracer detection system outputs a water sample absorbance value to a display 13-2 in real time on line, and feeds back the absorbance test value to a PLC judgment module of an automatic controller 13-1, when the absorbance of the detected water sample is larger than a set value, the condenser on the side is judged to leak;
and (f) when the leakage side of the condenser is determined, switching the liquid delivery outlet of the electromagnetic five-way valve 4 into an outlet a and an outlet b, injecting a tracer into a water return pipe between the high back pressure water chamber and the low back pressure water chamber of the condenser at the leakage side, judging that the high back pressure condenser at the leakage side leaks when the light absorption value exceeds a set value, and judging that the low back pressure condenser at the leakage side leaks when the light absorption value is lower than the set value.
Compared with the prior art, the invention has the following beneficial effects: the leakage detection equipment provided by the invention overcomes the problems of poor sampling representativeness, high cost and slow tracer diffusion of the conventional leakage detection equipment, realizes intellectualization, can monitor the leakage abnormality of the condenser in real time, does not need to watch personnel, and ensures the operation safety of the thermal equipment of the unit. In addition, the invention also discloses a leak detection method of the leak detection device, which is simple and convenient to operate and worthy of popularization.
Drawings
The invention is described in further detail below with reference to the figures and specific examples.
FIG. 1 is a schematic view of the tracing on-line leak testing apparatus of the present invention;
reference numerals: 1. a tracer storage tank; 2. a dosing system solenoid valve; 3. an injection pump; 4. an electromagnetic five-way valve; 4-a, an outlet of the electromagnetic five-way valve a; 4-b, an outlet of the electromagnetic five-way valve b; 4-c, an outlet of the electromagnetic five-way valve c; 4-d, an outlet of the electromagnetic five-way valve d; 5. a condenser; 5-1, an inlet of a low back pressure water chamber B of the condenser; 5-3, an inlet of a low back pressure water chamber A of the condenser; 5-2, an outlet of a low back pressure water chamber B of the condenser; 5-4, an outlet of a low back pressure water chamber A of the condenser; 5-5, an outlet of a high back pressure water chamber A of the condenser; 5-6, an inlet of a high back pressure water chamber A of the condenser; 5-7, and an outlet of a high back pressure water chamber B of the condenser; 5-8, an inlet of a high back pressure water chamber B of the condenser; 5-9, a condenser hot well water inlet; 6. a condensate pump; 7. a sample injection system electromagnetic valve 8 and an electromagnetic three-way valve; 9. an infusion pump; 10. a dosing ring; 11. a tracer detector; 12. a demineralized water tank; 13. a control cabinet; 13-1, an automatic controller, 13-2 and a display; 14. pipeline cleaning system solenoid valve.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples.
As shown in fig. 1, a condenser tracing on-line leak detection device comprises a dosing system, a pipeline cleaning system, a sample introduction system, a tracer detection system and a control cabinet which are connected with each other; the dosing system comprises a tracer storage tank 1, a dosing system electromagnetic valve 2, an injection pump 3 and an electromagnetic five-way valve 4, wherein the dosing system electromagnetic valve 2 is respectively connected with an outlet of the tracer storage tank 1 and an inlet of the injection pump 3 through pipelines; the injection pump 3 is respectively connected with the outlet of the dosing system electromagnetic valve 2 and the inlet of the electromagnetic five-way valve 4 through pipelines; the outlet a, the outlet B, the outlet c and the outlet d of the electromagnetic five-way valve 4 are respectively and correspondingly connected with an inlet B5-8 of a condenser high back pressure water chamber, an inlet A5-6 of the condenser high back pressure water chamber, an inlet A5-3 of a condenser low back pressure water chamber and an inlet B5-1 of the condenser low back pressure water chamber through pipelines; the pipeline cleaning system comprises a demineralized water tank 12, a pipeline cleaning system electromagnetic valve 14 and an electromagnetic three-way valve 8, wherein the pipeline cleaning system electromagnetic valve 14 is connected with an outlet of the demineralized water tank 12 and an inlet of the electromagnetic three-way valve 8b through a pipeline; the sample injection system comprises a sample injection system electromagnetic valve 7, an electromagnetic three-way valve 8, a liquid transfer pump 9 and a quantitative ring 10, wherein the sample injection system electromagnetic valve 7 is respectively connected with an inlet of the electromagnetic three-way valve 8a and an outlet pipeline of a condensate pump 6 of a condenser hot-well water inlet 5-9 through pipelines, and the electromagnetic three-way valve 8 is respectively connected with an outlet of the sample injection system electromagnetic valve 7 and an inlet of the liquid transfer pump 9 through pipelines; the infusion pump 9 is respectively connected with the outlet of the electromagnetic three-way valve 8 and the quantitative ring 10 through pipelines; the tracer detection system is composed of a tracer detector 11; the control cabinet 13 comprises an automatic controller 13-1 and a display 13-2, and the automatic controller 13-1 is connected with the display 13-2 through a signal transmission line.
The control cabinet 13 is made of stainless steel and is connected with a 220-380V alternating current power supply through a power adapter.
The automatic controller 13-1 comprises a PLC control module, a controller of a PLC judgment module, a serial server and an external human-machine operation interface, the injection speed of the injection pump 3, the operation time of the injection pump, the flushing time of the desalted water, the volume flow of the infusion pump 9, the ultraviolet absorption wavelength and the feedback value control parameters of the ultraviolet absorbance are input on line on the human-machine interface, the injection pump 3, the electromagnetic five-way valve 4, the electromagnetic three-way valve 8, the dosing system electromagnetic valve 2 and the infusion pump 9 are controlled, and serial communication can be carried out through the serial server to send a notice.
The display 13-2 is one of an LCD, an LED and an OLED, and the absorbance value is displayed through the display and can be transmitted to the controller.
The tracer detector 11 is an ultraviolet spectrophotometer, the ultraviolet full-wavelength scanning range is 200-380 nm, the absorbance value of a water sample can be continuously monitored, and a detection pool contained in the tracer detector 11 is a quartz cuvette (45 multiplied by 12.5 mm).
The quantitative ring 10 is a stainless steel or PEEK quantitative ring, and the volume is 5000 mu L; the infusion pump 9 is a constant flow pump and has a double-plunger structure, and the volume flow of the infusion pump 9 is continuously adjustable within the range of 0.05-1.0 mL/s; the inlet position of the electromagnetic three-way valve 8 is controlled by the automatic controller 13-1 to be switched into an inlet a or an inlet b.
The tracer storage tank 1 is a cylindrical transparent glass container with scales, and the volume of the tracer storage tank is 50L; the inlet position of the electromagnetic five-way valve 4 is freely switched into an outlet a, an outlet b, an outlet c or an outlet d by the automatic controller 13-1; the injection pump 3 is a single-channel industrial electric injection pump, and the injection speed is continuously adjustable within the range of 5-100 mL/s; the demineralized water tank 12 is made of organic glass and has a volume of 50L.
The tracer in the tracer storage tank 1 is one of diphenyl ethylene diphenyl sodium disulfonate, sodium sulfanilate, sodium benzoate, potassium sorbate, sodium thiosulfate, sodium bisulfite and sodium ascorbate, and the concentration of the tracer is 30-50 g/L of aqueous solution.
The leakage detection method of the condenser tracing online leakage detection device comprises the following steps after the condenser 5 leaks:
step (a), connecting a power supply, turning on a power switch of the control cabinet, and supplying power to the control cabinet 13;
step (b), respectively setting an injection speed of 20-30 mL/s of an injection pump, the running time of the injection pump for 2-3 min, the time for flushing with desalted water for 0.5-1 min, the flow rate of the infusion pump for 0.5-1.0 mL/s, the absorption wavelength for 200-400 nm and the absorbance feedback value for 0-1.0 to a human-computer operation interface of the automatic controller 13-1;
step (c), opening an electromagnetic valve 14 of the pipeline cleaning system after the desalting water tank 12, switching a transfusion inlet of an electromagnetic three-way valve 8 to be an inlet b, starting an infusion pump 9, flushing the pipeline, a quantitative ring 10 and a tracer detector 11 according to the time and flow set by a human-computer interface, discharging flushing liquid through a waste liquid outlet of the tracer detector 11, and closing the electromagnetic valve 14 after flushing is finished;
step (d), after the step (c) is executed, a dosing system electromagnetic valve 2 behind a tracer storage tank 1 is opened, an injection pump 3 is started, an infusion outlet of an electromagnetic five-way valve 4 is switched into a c outlet and a d outlet, tracer is sequentially injected into an inlet 5-3 of a condenser low back pressure water chamber A and an inlet 5-1 of a condenser low back pressure water chamber B, the time interval of two injections is 15-25 min, a sample injection system electromagnetic valve 7 behind a condensate pump 6 is opened, an electromagnetic three-way valve 8 is switched into an inlet a, a water sample enters a tracer detector 11 through a quantitative ring 10 under the action of an infusion pump 9, the water sample is discharged through a waste liquid outlet of the tracer detector 11, after the infusion pump 9 runs for 5-15 min, the sample injection system electromagnetic valve 7 is closed, the tracer detection system outputs a water sample absorbance value to a display 13-2 in real time on line, and feeds back the absorbance test value to a PLC judgment module of an automatic controller 13-1, when the absorbance of the detected water sample is larger than a set value, the condenser on the side is judged to leak;
and (f) when the leakage side of the condenser is determined, switching the liquid delivery outlet of the electromagnetic five-way valve 4 into an outlet a and an outlet b, injecting a tracer into a water return pipe between the high back pressure water chamber and the low back pressure water chamber of the condenser at the leakage side, judging that the high back pressure condenser at the leakage side leaks when the light absorption value exceeds a set value, and judging that the low back pressure condenser at the leakage side leaks when the light absorption value is lower than the set value.
Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: all the technical solutions formed by equivalent transformation or equivalent replacement of the present invention are within the scope of the claims of the present invention.
Claims (9)
1. The utility model provides a condenser spike equipment of leaking hunting on line which characterized in that: comprises a dosing system, a pipeline cleaning system, a sample introduction system, a tracer detection system and a control cabinet which are connected; the dosing system comprises a tracer storage tank (1), a dosing system electromagnetic valve (2), an injection pump (3) and an electromagnetic five-way valve (4), wherein the dosing system electromagnetic valve (2) is respectively connected with an outlet of the tracer storage tank (1) and an inlet of the injection pump (3) through pipelines; the injection pump (3) is respectively connected with the outlet of the dosing system electromagnetic valve (2) and the inlet of the electromagnetic five-way valve (4) through pipelines; an outlet a, an outlet B, an outlet c and an outlet d of the electromagnetic five-way valve (4) are respectively and correspondingly connected with an inlet B (5-8) of the condenser high back pressure water chamber, an inlet A (5-6) of the condenser high back pressure water chamber, an inlet A (5-3) of the condenser low back pressure water chamber and an inlet B (5-1) of the condenser low back pressure water chamber through pipelines; the pipeline cleaning system comprises a desalted water tank (12), a pipeline cleaning system electromagnetic valve (14) and an electromagnetic three-way valve (8), wherein the pipeline cleaning system electromagnetic valve (14) is connected with an outlet of the desalted water tank (12) and an inlet of the electromagnetic three-way valve (8) b through a pipeline; the sampling system comprises a sampling system electromagnetic valve (7), an electromagnetic three-way valve (8), an infusion pump (9) and a quantitative ring (10), wherein the sampling system electromagnetic valve (7) is respectively connected with an inlet a of the electromagnetic three-way valve (8) and an outlet pipeline of a condensate pump (6) of a condenser hot well water inlet (5-9) through pipelines, and the electromagnetic three-way valve (8) is respectively connected with an outlet of the sampling system electromagnetic valve (7) and an inlet of the infusion pump (9) through pipelines; the infusion pump (9) is respectively connected with the outlet of the electromagnetic three-way valve (8) and the quantitative ring (10) through pipelines; the tracer detection system is composed of a tracer detector (11); the control cabinet (13) comprises an automatic controller (13-1) and a display (13-2), and the automatic controller (13-1) is connected with the display (13-2) through a signal transmission line.
2. The condenser tracer online leak detection device according to claim 1, wherein: the control cabinet (13) is connected with a 220-380V alternating current power supply through a power adapter.
3. The condenser tracer online leak detection device according to claim 1, wherein: automatic controller (13-1) is interior to contain PLC control module, the controller of PLC judgement module, serial server and outside human-computer operation interface, at human-computer interface on-line input syringe pump (3) injection speed, syringe pump operating duration, demineralized water washing time, transfer pump (9) volume flow, the ultraviolet absorption wavelength, ultraviolet absorbance feedback value control parameter, the realization is to syringe pump (3), electromagnetism five-way valve (4), electromagnetism three-way valve (8), the control of medicine system solenoid valve (2) and transfer pump (9), also carry out the serial communication through serial server, send notice.
4. The condenser tracer online leak detection device according to claim 1, wherein: the display (13-2) is one of an LCD, an LED and an OLED, the absorbance value is displayed through the display, and the water sample absorbance value is transmitted to the controller.
5. The condenser tracer online leak detection device according to claim 1, wherein: the tracer detector (11) is an ultraviolet spectrophotometer, the ultraviolet full-wavelength scanning range is 200-380 nm, the absorbance value of a water sample can be continuously monitored, and a detection pool contained in the tracer detector (11) is a quartz cuvette.
6. The condenser tracer online leak detection device according to claim 1, wherein: the quantitative ring (10) is a stainless steel or PEEK quantitative ring, and the volume of the quantitative ring is 5000 mu L; the infusion pump (9) is a constant flow pump and has a double-plunger structure, and the volume flow of the infusion pump (9) is continuously adjustable within the range of 0.05-1.0 mL/s; the inlet position of the electromagnetic three-way valve (8) is controlled to be switched into an inlet a or an inlet b by an automatic controller (13-1).
7. The condenser tracer online leak detection device according to claim 1, wherein: the tracer storage tank (1) is a cylindrical transparent glass container with scales; the inlet position of the electromagnetic five-way valve (4) is freely switched into an outlet a, an outlet b, an outlet c or an outlet d by an automatic controller (13-1); the injection pump (3) is a single-channel industrial electric injection pump, and the injection speed is continuously adjustable within the range of 5-100 mL/s; the desalting water tank (12) is made of organic glass.
8. The condenser tracer online leak detection device according to claim 1, wherein: the tracer in the tracer storage tank (1) is one of diphenyl ethylene diphenyl sodium disulfonate, sodium sulfanilate, sodium benzoate, potassium sorbate, sodium thiosulfate, sodium bisulfite and sodium ascorbate, and the concentration of the tracer is 30-50 g/L of water solution.
9. The leak detection method for the condenser tracing online leak detection equipment according to any one of claims 1 to 8, characterized by comprising the following steps after the condenser (5) leaks:
step (a), connecting a power supply, turning on a power switch of the control cabinet, and supplying power to the control cabinet (13);
step (b), respectively setting an injection speed of 20-30 mL/s of an injection pump, an operation time of 2-3 min of the injection pump, a time of flushing with desalted water of 0.5-1 min, a flow rate of the infusion pump of 0.5-1.0 mL/s, an absorption wavelength of 200-400 nm and an absorbance feedback value of 0-1.0 to a human-computer operation interface of an automatic controller (13-1);
opening an electromagnetic valve (14) of the pipeline cleaning system after the desalted water tank (12), switching a transfusion inlet of an electromagnetic three-way valve (8) to be an inlet b, starting an infusion pump (9), flushing the pipeline, a quantitative ring (10) and a tracer detector (11) according to the time and flow set by a human-computer interface, discharging flushing liquid through a waste liquid outlet of the tracer detector (11), and closing the electromagnetic valve (14) after flushing is finished;
step (d), after the step (c) is executed, a dosing system electromagnetic valve (2) behind a tracer storage tank (1) is started, an injection pump (3) is started, an infusion outlet of an electromagnetic five-way valve (4) is switched into a c outlet and a d outlet, tracers are sequentially injected into an inlet (5-3) of a condenser low-back-pressure water chamber A and an inlet (5-1) of a condenser low-back-pressure water chamber B, the time interval of two injections is 15-25 min, a sample injection system electromagnetic valve (7) behind a condensate pump (6) is started, an infusion inlet is switched into an inlet a by an electromagnetic three-way valve (8), a water sample enters a tracer detector (11) through a quantitative ring (10) under the action of an infusion pump (9), the water sample is discharged through a waste liquid outlet of the tracer detector (11), the sample injection system electromagnetic valve (7) is closed after the infusion pump (9) runs for 5-15 min, the tracer detection system outputs an absorbance water sample value to a display (13-2) on line in real time, feeding back the absorbance test value of the water sample to a PLC judgment module of the automatic controller (13-1), and judging that the condenser on the side leaks when the absorbance of the detected water sample is greater than a set value;
and (f) when the leakage side of the condenser is determined, switching the infusion outlet of the electromagnetic five-way valve (4) into an outlet a and an outlet b, injecting tracer into a middle return pipe of a high back pressure water chamber and a middle return pipe of a low back pressure water chamber of the condenser at the leakage side, judging that the high back pressure condenser at the leakage side leaks when the light absorption value exceeds a set value, and judging that the low back pressure condenser at the leakage side leaks when the light absorption value is lower than the set value.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246258A1 (en) * | 2022-06-23 | 2023-12-28 | 西安热工研究院有限公司 | Gas detection-based online positioning system and method for leaking pipe of condenser |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5168747A (en) * | 1990-11-26 | 1992-12-08 | Westinghouse Electric Corp. | System and method for locating leaks in steam turbine systems |
| US20040033167A1 (en) * | 2001-09-05 | 2004-02-19 | Coleman Dennis D. | Continuous tracer generation apparatus |
| KR101495005B1 (en) * | 2014-05-28 | 2015-02-24 | 주식회사 휴비스워터 | Method and System for Detecting Trace Boron for SG Tube Leakage On-line Monitoring in Mixed Solution |
| US20160103036A1 (en) * | 2014-09-28 | 2016-04-14 | Shenzhen China Star Optoelectronics Technology Co. Ltd. | Method for inspecting sealability of vacuum chamber |
| CN106969885A (en) * | 2017-04-21 | 2017-07-21 | 西安热工研究院有限公司 | A kind of condenser of power plant leak detection system and detection method |
| CN106969946A (en) * | 2017-04-21 | 2017-07-21 | 西安热工研究院有限公司 | A kind of condensed water sampling method and device for condenser leakage detection |
| CN107152991A (en) * | 2016-03-04 | 2017-09-12 | 中国辐射防护研究院 | The pilot system and test method detected for iodine adsorber slip in nuclear power station ventilating system |
| CN112489840A (en) * | 2020-11-12 | 2021-03-12 | 中广核工程有限公司 | Tracer injection equipment for steam humidity measurement test of nuclear power plant |
-
2021
- 2021-11-08 CN CN202111314590.1A patent/CN114018495B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5168747A (en) * | 1990-11-26 | 1992-12-08 | Westinghouse Electric Corp. | System and method for locating leaks in steam turbine systems |
| US20040033167A1 (en) * | 2001-09-05 | 2004-02-19 | Coleman Dennis D. | Continuous tracer generation apparatus |
| KR101495005B1 (en) * | 2014-05-28 | 2015-02-24 | 주식회사 휴비스워터 | Method and System for Detecting Trace Boron for SG Tube Leakage On-line Monitoring in Mixed Solution |
| US20160103036A1 (en) * | 2014-09-28 | 2016-04-14 | Shenzhen China Star Optoelectronics Technology Co. Ltd. | Method for inspecting sealability of vacuum chamber |
| CN107152991A (en) * | 2016-03-04 | 2017-09-12 | 中国辐射防护研究院 | The pilot system and test method detected for iodine adsorber slip in nuclear power station ventilating system |
| CN106969885A (en) * | 2017-04-21 | 2017-07-21 | 西安热工研究院有限公司 | A kind of condenser of power plant leak detection system and detection method |
| CN106969946A (en) * | 2017-04-21 | 2017-07-21 | 西安热工研究院有限公司 | A kind of condensed water sampling method and device for condenser leakage detection |
| CN112489840A (en) * | 2020-11-12 | 2021-03-12 | 中广核工程有限公司 | Tracer injection equipment for steam humidity measurement test of nuclear power plant |
Non-Patent Citations (4)
| Title |
|---|
| 张维科;李俊菀;龙国军;黄昌跃;林心光;汪思华;刘诗海;: "凝汽器换热管检漏装置应用现状及改进措施", 热力发电, no. 01 * |
| 朱宇龙, 丁辉, 李晓红, 陈大兵, 林德源: "凝汽器管泄漏在线检测系统的开发", 无损检测, no. 05 * |
| 李爱英, 王凯全, 邵辉: "管道泄漏监测技术及其研究进展", 江苏石油化工学院学报, no. 04 * |
| 郭航;王金栋;: "抽汽冷凝式汽轮机凝汽器内漏的检查及消漏", 乙烯工业, no. 02 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023246258A1 (en) * | 2022-06-23 | 2023-12-28 | 西安热工研究院有限公司 | Gas detection-based online positioning system and method for leaking pipe of condenser |
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