CN104006938A - Detection method for leakage points of horizontal tube cooler - Google Patents
Detection method for leakage points of horizontal tube cooler Download PDFInfo
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- CN104006938A CN104006938A CN201410248767.6A CN201410248767A CN104006938A CN 104006938 A CN104006938 A CN 104006938A CN 201410248767 A CN201410248767 A CN 201410248767A CN 104006938 A CN104006938 A CN 104006938A
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Abstract
The invention discloses a one-off detection method for multiple leakage points of a horizontal tube cooler. A tube bundle on the bottommost layer of the cooler is communicated with a liquid level tube, liquid level changes are measured and recorded through a liquid level instrument, a liquid level-time curve chart is drawn, and the heights of the leakage points are determined through inflection points of the chart. The detection method can detect the multiple leakage points in a one-off mode and save time, labor and capital.
Description
Technical field
The invention belongs to coking industry heat-exchange apparatus service technique field, relate in particular to a kind of method for detecting of horizontal water-tube cooler leakage point.
Background technology
The coke-oven gas of coking industry generally adopts the cooling coal gas of horizontal water-tube cooler, coal gas is walked outside tube bank, chilled water is walked in pipe, there is tube bank leakage owing to corroding or expanding with heat and contract with cold after using a period of time in horizontal water-tube cooler, causes horizontal water-tube cooler refrigeratory function reduction, needs repair and maintenance restore funcitons, before maintenance, need the position that checks whether horizontal water-tube cooler cooler bundle is revealed and revealed, prior art leak hunting method is some, some method complexity, and some methods are time-consuming.
Summary of the invention
The object of the invention is to provide simple in structure, the method for detecting of reasonable, easy to operate a kind of horizontal water-tube cooler leakage point is installed.
Technical scheme of the present invention is: a kind of method for detecting of horizontal water-tube cooler leakage point, this horizontal water-tube cooler is provided with upper hose, return pipe, upper hose is provided with upper hose valve, return pipe is provided with return pipe draw-off valve and backwater pipe valve, upper hose is provided with sluicing arm, sluicing arm is provided with upper hose draw-off valve, snorkel is established on return pipe top, snorkel is provided with Ventilating duct valve, snorkel mouth of pipe height is not less than the superiors' tube bank of horizontal water-tube cooler, the sluicing arm mouth of pipe is connected a liquid level tube, liquid level tube straight up and upper orifice be not less than the superiors tube bank of horizontal water-tube cooler, stop into the horizontal water-tube cooler medium that is cooled, close return pipe draw-off valve, backwater pipe valve, upper hose valve, open upper hose draw-off valve, Ventilating duct valve, the chilled water of being left by snorkel upper orifice or the water filling of liquid level tube upper orifice or utilization reaches liquid level to be highly not less than the superiors of horizontal water-tube cooler to be restrained, the tank gage that setting can induction level intraluminal fluid position changes, utilize tank gage measure liquid level tube interior liquid level changing value h and corresponding time value t and record h, t, until level stability, t and corresponding h are linked to be to a curve in rectangular coordinate system by each point as coordinate points, the h value of point of inflexion on a curve is corresponding with the height of leakage point.
Described tank gage is digital display type tank gage, and display end is located at indoor.
The liquid level signal input computing machine of described tank gage, by computer recording level value and corresponding time, by curve described in computer drawing.
Described liquid level tube is flexible pipe, and harness is on support bar.
Described liquid level tube is stereoplasm tube, may be selected to be steel pipe.
Beneficial effect: the chilled water that the present invention can adopt horizontal water-tube cooler to use easily and efficiently, by stopping into the horizontal water-tube cooler medium that is cooled, utilize the pressure differential of chilled water in horizontal water-tube cooler pipe, chilled water leaks from pipe internal leakage point, judges the position whether horizontal water-tube cooler is revealed and revealed; By drawing water level decline curve, the disposable height that detects leakage point place, only needs an external liquid level tube and tank gage, and without complicated equipment investment, material market is all on sale, without customized specially; Measure the liquid level of liquid level tube with tank gage, remove danger and Exposure to Sunlight wind that workman climbs from, change in the indoor liquid level that can observe, tank gage can record more level value, greatly reduce error and the time delay of eye-observation liquid level, and then draw out meticulousr curve, avoid the omission of " flex point ".
Brief description of the drawings
Fig. 1 is structural representation of the present invention;
Fig. 2 is curve exemplary plot of the present invention;
In figure: 1-horizontal water-tube cooler 2-exhaust stack 3-Ventilating duct valve 4, return pipe 5-return pipe draw-off valve 6-upper hose 7-upper hose valve 8-upper hose draw-off valve 9-liquid level tube 10-sluicing arm 11-backwater pipe valve 12-snorkel 13-support bar 14-tank gage.
Embodiment
Below in conjunction with specific embodiment and accompanying drawing thereof, the invention will be further described.
A kind of method for detecting of horizontal water-tube cooler leakage point, connect a liquid level tube in the tube bank of the horizontal water-tube cooler bottom, liquid level tube can be directly and bottom tube bank pick out, for horizontal water-tube cooler damage minimum, can restrain on the water inlet pipe communicating arm is being set with the bottom, connect liquid level tube by arm, liquid level tube extends to the high level tube bank of horizontal water-tube cooler, can be vertical, (vertical scale need be set) that can be slightly oblique, it can be stereoplasm tube, can be flexible pipe (need by supporter supports), as long as the high liquid level (HLL) that liquid level tube can reach be not less than horizontal water-tube cooler the superiors' tube bank and can be directly or by the variation of servicing unit observation liquid level, recorded, make water can be full of each layer of tube bank of horizontal water-tube cooler and liquid level observation pipe, liquid level tube liquid level reaches the highest, can in the time of cooling water, close the valve logical with tube bank below the superiors tube bank of horizontal water-tube cooler, except the liquid level tube mouth of pipe, a liquid level contacting with air is at least stayed on top, if liquid level tube liquid level does not reach the highest, add water by liquid level tube port again, the superiors' pipe that also can horizontal water-tube cooler following with the logical valve closing of tube bank after manage a plane by liquid level observation pipe port or other and the superiors of horizontal water-tube cooler opening to be filled to liquid level the highest, liquid level tube liquid level reach the highest after, observe the SEA LEVEL VARIATION of liquid level tube, water level declines and shows that horizontal water-tube cooler tube bank has leakage, records at set intervals elapsed time t and corresponding level value h until water level no longer reduces, using the t value of record and corresponding h value as coordinate points, i.e. point (t, h) or (h, t) at rectangular coordinate system described point, then these points are linked to be to a curve, on curve, occur flex point, the h value of flex point place coordinate is corresponding with leakage point place height.
Specifically as shown in Figure 1, this horizontal water-tube cooler is provided with upper hose 6, return pipe 4, upper hose 6 is provided with upper hose valve 7, return pipe 4 is provided with return pipe draw-off valve 5 and backwater pipe valve 11, upper hose 6 is provided with sluicing arm 10, sluicing arm 10 is provided with upper hose draw-off valve 8, snorkel 12 is established on return pipe 4 tops, snorkel 12 is provided with Ventilating duct valve 3, snorkel 12 mouth of pipe height are not less than the superiors' tube bank of horizontal water-tube cooler, described liquid level tube 9 is connected on sluicing arm 10 mouth of pipe places, in order to record the changing value of liquid level, liquid level tube 9 can be transparent pipe and indicates scale value, stop into horizontal water-tube cooler hot gas, close return pipe draw-off valve 5, backwater pipe valve 11, upper hose valve 7, open upper hose draw-off valve 8, Ventilating duct valve 3, the superiors that chilled water to the liquid level of being left by snorkel 12 upper orifice or transparent pipe 9 upper orifice water fillings or utilization is not less than horizontal water-tube cooler restrain, observe the interior liquid level variation of liquid level tube 9 and constantly record level value and corresponding time value, until level stability, taking time value t as transverse axis, level value h is longitudinal axis described point, each point is linked to be to a curve, the ordinate value of point of inflexion on a curve is corresponding with the height of leakage point.
Liquid level tube 9 can be lucite pipe or transparent glass tube, is bundled on support bar 13 or is sling by lifting rope, if frangible glass tube also need be by supporter supports if transparent pipe 9 is soft Guan Zexu.If when soft pipe, may there is bending in pipe, so also indicate scale value on support bar 13 surfaces, can set it as the scale of SEA LEVEL VARIATION in pipe.
Can also survey with additive method the variation of liquid level, as surveyed with tank gage, now liquid level tube need adapt to the mode of tank gage measurement liquid level, the liquid level of whole fluid column changes and can be measured by tank gage, preferably stereoplasm tube, as steel pipe, if soft pipe bore to reach avoid greatly bending and vertical fixing.Tank gage can be submerge formula, float-ball type, ultrasound wave, infrared ray etc., changes and can record as long as can measure the liquid level of liquid level tube.For workman is not subject to Exposure to Sunlight wind, the display end of tank gage is located at indoor, completes observed and recorded on ground, removes workman's danger of measuring of climbing from, and preferably digital display type tank gage, is forbidden in order to avoid pointer reading is slow.Utilize software as the excel curve plotting figure of office level value and time value data input computing machine, better way is that the signal that tank gage is sent is connected into computing machine, coordinate corresponding software by the computing machine figure that directly runs a curve, provide doubtful leak point height, realize automatic measurement, for making to calculate the signal that function receiving liquid position instrument sends, can increase necessary signal conversion or multiplying arrangement, tank gage signal is converted into computing machine, and can to store the technology of data are mature technologies, can directly be applied, software can be selected from existing data processing software, also can specialized designs for the software of this level gauging Drawing of Curve, .The tank gage 14 that Fig. 1 provides is floating types, has omitted stilt in figure, other kind tank gages, and the contactless liquid level top that is located at, contact induction end is located on liquid level or at the bottom of liquid.
The party's ratio juris is: water has been full of horizontal water-tube cooler tube bank and liquid level tube, other valves close, the water surface contacts with air, if tube bank has leakage point, due to the existence of hydraulic pressure, water can flow out from leakage point, cause liquid level to decline, liquid level decline hydraulic pressure reduces gradually, liquid level fall off rate also reduces, but change not obvious, until the leakage point of the tube bank of liquid level and certain one deck maintains an equal level, this leakage point tube bank is no longer leaked, owing to having lacked this leakage point, liquid level fall off rate there will be a unexpected reduction, what now on curve map, show is one " flex point ", this puts the height that corresponding level value is exactly leakage point, so just find out easily this leakage point.
For being more readily understood, provide a curve map example, as shown in Figure 2, curve overall trend declines, curve peak starts to decline, rate of curve reduces slowly, be bordering on straight line, in curve decline process there is a some A that the range of decrease is larger in slope, in example, there is A, B, C, D, E, F is totally 6 points that slope changes suddenly, during to F point, slope reduces to zero, liquid level remains unchanged, be that F point height has not had leakage point below, these 6 points i.e. " flex point ", the value of corresponding ordinate is exactly level value, what level value was corresponding is exactly the height of leakage point.
Claims (6)
1. the method for detecting of a horizontal water-tube cooler leakage point, this horizontal water-tube cooler is provided with upper hose (6), return pipe (4), upper hose (6) is provided with upper hose valve (7), return pipe (4) is provided with return pipe draw-off valve (5) and backwater pipe valve (11), it is characterized in that: upper hose (6) is provided with sluicing arm (10), sluicing arm (10) is provided with upper hose draw-off valve (8), snorkel (12) is established on return pipe (4) top, snorkel (12) is provided with Ventilating duct valve (3), snorkel (12) mouth of pipe height is not less than the superiors' tube bank of horizontal water-tube cooler, sluicing arm (10) mouth of pipe is connected a liquid level tube (9), liquid level tube (9) straight up and upper orifice be not less than the superiors tube bank of horizontal water-tube cooler, stop into the horizontal water-tube cooler medium that is cooled, close return pipe draw-off valve (5), backwater pipe valve (11), upper hose valve (7), open upper hose draw-off valve (8), Ventilating duct valve (3), the chilled water of being left by snorkel (12) upper orifice or liquid level tube (9) upper orifice water filling or utilization reaches liquid level to be highly not less than the superiors' tube bank of horizontal water-tube cooler, the tank gage that can induction level pipe (9) the interior liquid level of setting changes, utilize tank gage measure liquid level tube (9) interior liquid level changing value h and corresponding time value t and record h, t, until level stability, t and corresponding h are linked to be to a curve in rectangular coordinate system by each point as coordinate points, the h value of point of inflexion on a curve is corresponding with the height of leakage point.
2. the method for detecting of horizontal water-tube cooler leakage point as claimed in claim 1, is characterized in that: described tank gage is digital display type tank gage, and display end is located at indoor.
3. the method for detecting of horizontal water-tube cooler leakage point as claimed in claim 1, is characterized in that: the liquid level signal input computing machine of described tank gage, and by computer recording level value and corresponding time, by curve described in computer drawing.
4. the method for detecting of horizontal water-tube cooler leakage point as claimed in claim 1, is characterized in that: described liquid level tube (9) is flexible pipe, and harness is on support bar (13).
5. the method for detecting of horizontal water-tube cooler leakage point as claimed in claim 1, is characterized in that: described liquid level tube (9) is stereoplasm tube.
6. the method for detecting of horizontal water-tube cooler leakage point as claimed in claim 5, is characterized in that: described liquid level tube (9) is steel pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410248767.6A CN104006938B (en) | 2014-06-06 | 2014-06-06 | A kind of method for detecting of horizontal water-tube cooler leakage point |
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| CN201410248767.6A CN104006938B (en) | 2014-06-06 | 2014-06-06 | A kind of method for detecting of horizontal water-tube cooler leakage point |
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| CN104006938A true CN104006938A (en) | 2014-08-27 |
| CN104006938B CN104006938B (en) | 2016-08-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106525475A (en) * | 2016-11-23 | 2017-03-22 | 成都航天通信设备有限责任公司 | Thermal evaluation system and method |
| CN106546384A (en) * | 2015-09-17 | 2017-03-29 | 鞍钢股份有限公司 | Leakage detection method for transverse pipe primary cooler |
| CN109211486A (en) * | 2018-10-16 | 2019-01-15 | 广东小天才科技有限公司 | Leakage detection device and detection method applied to electronic product |
| CN111947863A (en) * | 2020-07-09 | 2020-11-17 | 奇瑞新能源汽车股份有限公司 | Method and equipment for detecting leakage of cooling liquid of energy storage device of electric automobile |
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| CN203307300U (en) * | 2013-05-21 | 2013-11-27 | 中冶焦耐工程技术有限公司 | Lower-segment replenisher pre-cooling device of cross-pipe primary cooler |
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| US6832504B1 (en) * | 2003-11-19 | 2004-12-21 | Be Intellectual Property, Inc. | Liquid sensing system for an aircraft galley cooler using a two phase working fluid |
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| CN106546384A (en) * | 2015-09-17 | 2017-03-29 | 鞍钢股份有限公司 | Leakage detection method for transverse pipe primary cooler |
| CN106525475A (en) * | 2016-11-23 | 2017-03-22 | 成都航天通信设备有限责任公司 | Thermal evaluation system and method |
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| CN109211486A (en) * | 2018-10-16 | 2019-01-15 | 广东小天才科技有限公司 | Leakage detection device and detection method applied to electronic product |
| CN111947863A (en) * | 2020-07-09 | 2020-11-17 | 奇瑞新能源汽车股份有限公司 | Method and equipment for detecting leakage of cooling liquid of energy storage device of electric automobile |
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| CN104006938B (en) | 2016-08-17 |
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