CN108871706B - Leakage detection equipment of waste heat recovery device of crude gas riser of coke oven - Google Patents
Leakage detection equipment of waste heat recovery device of crude gas riser of coke oven Download PDFInfo
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- CN108871706B CN108871706B CN201810826509.XA CN201810826509A CN108871706B CN 108871706 B CN108871706 B CN 108871706B CN 201810826509 A CN201810826509 A CN 201810826509A CN 108871706 B CN108871706 B CN 108871706B
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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
- G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
- G01M3/28—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds
- G01M3/2846—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors for pipes, cables or tubes; for pipe joints or seals; for valves ; for welds for tubes
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Abstract
The invention discloses leakage detection equipment of a coke oven crude gas riser waste heat recovery device, which comprises a detection water tank, wherein a leakage detection disc is fixedly arranged on the surface of the top of the detection water tank, an air pump is arranged at one end of the leakage detection disc, the air outlet end of the air pump is fixedly connected with the leakage detection disc through an electromagnetic valve, an air bag is arranged in the middle section of the inside of the leakage detection disc, the air pump is communicated with the air bag, guide pipes are symmetrically arranged and welded on the top of the detection water tank, and the leakage detection equipment is ingenious in overall structural design, compact in structure, strong in practicability and lower in cost; the detection method has higher detection precision and detection frequency, and because the detection equipment has less dependence on the whole external environment in the detection process, the detection method can be implemented as long as the basic conditions are met, namely the altitude, the liquid level and the like, and the detection temperature is stable, and the detection result can not generate errors because of the external environment, so that the detection probability and the detection precision can not be influenced, and the detection method is suitable for popularization.
Description
Technical Field
The invention belongs to the technical field of coke oven waste heat recovery devices, and particularly relates to leakage detection equipment of a coke oven crude gas riser waste heat recovery device.
Background
Generally, the structure of the waste heat recovery device of the crude gas riser of the coke oven is roughly as follows: the heat exchanger consists of an inner cylinder and an outer cylinder, wherein an annular cavity is formed between the inner cylinder and the outer cylinder, a heat-conducting medium is filled in the annular cavity, a coil is arranged in the annular cavity, and a heat-exchanging medium such as water or heat-conducting oil is filled in the coil.
The riser pipe waste heat recovery device is likely to be damaged by perforation, cracks and the like in operation due to expansion with heat and contraction with cold, thermal stress, external force impact, corrosion and the like. After the device is damaged, the device can not work normally, and if a heat exchange medium enters the coke oven, normal production is influenced, even accidents are caused. At present, no method can timely and effectively find and judge the leakage condition of the riser waste heat recovery device. Therefore, the leakage detection equipment of the waste heat recovery device of the crude gas riser of the coke oven is provided to solve the problems in the prior art.
Disclosure of Invention
The invention aims to provide leakage detection equipment of a raw coke oven gas riser waste heat recovery device, which aims to solve the problems in the prior art in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
a leakage detection device of a coke oven crude gas riser waste heat recovery device comprises a detection water tank, a leakage detection tray is fixedly arranged on the top surface of the detection water tank, an air pump is arranged at one end of the leakage detection tray, the air outlet end of the air pump is fixedly connected with the leakage detection disk through an electromagnetic valve, the middle section inside the leakage detection disk is provided with an air bag, the air pump is communicated with the air bag, the top parts of the detection water tanks are symmetrically welded with guide pipes, and the interior of the guide pipe is connected with a lifting adjusting pipe in a sliding way, the top end of the lifting adjusting pipe is provided with a limit plate, a floating plate is fixedly arranged at the bottom end of the lifting adjusting pipe, a water inlet pump is arranged on one side wall of the detection water tank, and a water outlet pump is installed at the bottom of one side of the detection water tank, a leakage detection mechanism is installed on the air bag, and a coal gas riser waste heat recovery device is connected inside the air bag in a matching manner.
Preferably, the coal gas riser waste heat recovery device comprises an outer cylinder, an inner cylinder, a coil pipe and a cavity, wherein a barrel-shaped cavity is formed between the outer cylinder and the inner cylinder, a solid powder heat-conducting medium and an inert gas are filled in the cavity, the inert gas is nitrogen, and water or heat-conducting oil is filled in the coil pipe.
Preferably, the leakage detection mechanism includes a temperature sensor, a pressure sensor, and a timer, and the temperature sensor and the timer are respectively located on left and right sides of the timer.
Preferably, the top end of the guide pipe and the outer part of the lifting adjusting pipe are sleeved with a coil pipe.
Preferably, the detection water tank is provided with a liquid level sensor, and the type of the liquid level sensor is PY 201.
Preferably, the model of the air pump is ZWY-85/110-G or ZWY-110/160-G, ZWY-130/160-G; the power of the air pump motor is 110-160 kw; the maximum air extraction amount is 85-130m 3/min; the model of the electromagnetic valve is 2W-15; the model of the water inlet pump is 400G-8816; the model of the water outlet pump is 50G/75G8806 or TDC 5225.
Preferably, four groups of directional wheels are symmetrically arranged at four corners of the bottom of the detection water tank.
The invention has the technical effects and advantages that: compared with the prior art, the leakage detection equipment of the waste heat recovery device of the crude gas riser of the coke oven has the advantages of ingenious overall structural design, compact structure, strong practicability and lower cost; the detection method has higher detection precision and detection frequency, and because the detection equipment has less dependence on the whole external environment in the detection process, the detection method can be implemented as long as the basic conditions are met, namely the altitude, the liquid level and the like, and the detection temperature is stable, and the detection result cannot generate errors due to the external environment, so that the detection probability and the detection precision cannot be influenced; the detection cycle of the inventive solution is less time consuming.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of the structure of the present invention;
FIG. 3 is a schematic structural diagram of a waste heat recovery device of a gas riser according to the present invention;
fig. 4 is a schematic structural view of the leak detection mechanism of the present invention.
In the figure: 1. detecting a water tank; 2. a leak detection tray; 3. an air pump; 4. an electromagnetic valve; 5. a water inlet pump; 6. discharging the water pump; 7. coiling; 8. a guide tube; 9. a lifting adjusting pipe; 10. a floating plate; 11. a directional wheel; 12. a limiting plate; 13. a liquid level sensor; 14. a waste heat recovery device of the gas ascending pipe; 141. an outer cylinder; 142. an inner barrel; 143. a coil pipe; 144. a cavity; 15. an air bag; 16. a leak detection mechanism; 161. a temperature sensor; 162. a pressure sensor; 163. a timer.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example (b):
the invention provides a leakage detection device of a coke oven crude gas riser waste heat recovery device shown in figures 1-4, which comprises a detection water tank 1, wherein a leakage detection disc 2 is fixedly arranged on the top surface of the detection water tank 1, one end of the leakage detection disc 2 is provided with an air pump 3, the air outlet end of the air pump 3 is fixedly connected with the leakage detection disc 2 through an electromagnetic valve 4, the middle section of the interior of the leakage detection disc 2 is provided with an air bag 15, the air pump 3 is communicated with the air bag 15, guide pipes 8 are symmetrically arranged and welded on the top of the detection water tank 1, a lifting adjusting pipe 9 is connected in the guide pipe 8 in a sliding manner, the top end of the lifting adjusting pipe 9 is provided with a limiting plate 12, the bottom end of the lifting adjusting pipe 9 is fixedly provided with a floating plate 10, a water inlet pump 5 is arranged on one side wall of the detection water tank 1, and a water outlet pump 6 is arranged at the bottom, the air bag 15 is provided with a leakage detection mechanism 16, and the inside of the air bag 15 is connected with a gas riser waste heat recovery device 14 in a matching way.
Preferably, the gas riser waste heat recovery device 14 includes an outer cylinder 141, an inner cylinder 142, a coil 143 and a cavity 144, a barrel-shaped cavity 144 is formed between the outer cylinder 141 and the inner cylinder 142, the cavity 144 is filled with a solid powder heat-conducting medium and an inert gas, the inert gas is nitrogen, and the coil 143 is filled with water or heat-conducting oil.
Preferably, the leak detection mechanism 16 includes a temperature sensor 161, a pressure sensor 162, and a timer 163, and the temperature sensor 161 and the timer 163 are respectively located on the left and right sides of the timer 163.
By adopting the above technical solution, the leak detection mechanism 16 includes the temperature sensor 161, the pressure sensor 162, and the timer 163, the temperature sensor 161 and the timer 163 are respectively located on the left and right sides of the timer 163, and the temperature sensor 161, that is, the TS, monitors the temperature change of the space of the heat recovery device within a predetermined time. If the temperature is not changed or the variation is very small, namely less than 0.1 ℃ within the specified time, continuing to execute the leakage detection; if the temperature variation is large within a prescribed time, terminating the leak detection; because the temperature has very big influence to the atmospheric pressure in the waste heat recovery device, if the temperature in the sealed waste heat recovery device space is unstable during the leak testing, then its pressure is unstable yet, if carry out leak testing in this period of time, the accuracy of final testing result is lower, can lead to external ECU system erroneous judgement even.
Preferably, the coil 7 is sleeved on the top end of the guide pipe 8 and the outside of the lifting adjusting pipe 9.
Through adopting above-mentioned technical scheme, coil 7 has been cup jointed to the top of stand pipe 8 and the outside of lift adjustment pipe 9, and vertical lift adjustment is realized along stand pipe 8 to lift adjustment pipe 9 can be controlled in the rotation of coil 7 to the convenience carries out vertical lift adjustment to the coal gas tedge, carries out leakage detection efficiency to the coal gas tedge and improves greatly.
Preferably, a liquid level sensor 13 is installed on the detection water tank 1, and the model of the liquid level sensor 13 is PY 201.
Through adopting above-mentioned technical scheme, install level sensor 13 on the detection water tank 1, so still have the liquid level detection function.
Preferably, the model of the air pump 3 is ZWY-85/110-G or ZWY-110/160-G, ZWY-130/160-G; the power of the air pump motor is 110-160 kw; the maximum air extraction amount is 85-130m 3/min; the model of the electromagnetic valve 4 is 2W-15; the model of the water inlet pump 5 is 400G-8816; the model of the water outlet pump 6 is 50G/75G8806 or TDC 5225.
By adopting the technical scheme, the model number of the air pump 3 is ZWY-85/110-G; the power of the air pump motor is 110-160 kw; the maximum air extraction amount is 85-130m 3/min; the model of the electromagnetic valve 4 is 2W-15; the model of the water inlet pump 5 is 400G-8816; the model of the water outlet pump 6 is 50G/75G8806,.
Preferably, four sets of directional wheels 11 are symmetrically installed at four corners of the bottom of the detection water tank 1.
Through adopting above-mentioned technical scheme, four group's directive wheels 11 are installed to the mutual symmetry in bottom four corners that detects water tank 1, set up directive wheel 11, and the removal and the transport of the equipment of being convenient for, the 7 specifications of directive wheel are: the diameter of the wheel is 71mm, the width of the wheel surface is 30mm, the model number of the bearing is 6001, and the inner diameter is 12 mm.
The working principle is as follows: the gas riser waste heat recovery device 14 is inserted into the air bag 15, the gas riser waste heat recovery device 14 is abutted to the top surface of the floating plate 10, the air pump 3 is started to inflate the leakage detection plate 2, and the temperature sensor 161, namely TS, of the leakage detection mechanism 16 monitors the temperature change condition of the space of the waste heat recovery device within a specified time. If the temperature is not changed or the variation is very small, namely less than 0.1 ℃ within the specified time, continuing to execute the leakage detection; if the temperature variation is large within a prescribed time, terminating the leak detection; because the temperature has great influence on the air pressure in the waste heat recovery device, if the temperature in the space of the sealed waste heat recovery device is unstable during the leakage detection, the pressure is unstable, if the leakage detection is executed in the period of time, the accuracy of the final detection result is low, even the misjudgment of an external ECU system can be caused, when the pressure in the waste heat recovery device 14 of the gas ascending pipe is monitored by the pressure sensor 162, namely the PS, and when the pressure reaches a preset value P, the air pump 3 is closed to stop the inflation; closing the electromagnetic valve 4, called VSV for short, and cutting off the pipeline of the gas riser waste heat recovery device 14 communicated with the atmosphere, thereby sealing the gas riser waste heat recovery device 14; and starting a Timer 163 Timer, recording the time of P-designed attenuation change, synchronously executing the closing of the air pump 3, the closing of the VSV and the starting of the Timer 163 Timer, monitoring the pressure change condition of the sealed gas riser waste heat recovery device 14 by the PS under a preset frequency, continuously uploading the collected data to an external ECU (electronic control unit) system by the PS, the TS and the Timer in the period, sorting the collected data by a preset detection program, and comparing and analyzing the collected data with a previously verified pressure change value, thereby determining whether the detection passes or fails nominally. First, if the pressure changes Δ P < Δ P0.5 from P to P1 within a predetermined time Δ T while the temperature T is kept constant, and if the sealing system has a O.5 mm leak hole and the pressure change value within Δ T is Δ P0.5, it is determined that the leak hole of the seal gas riser waste heat recovery device 14 is < 0.5 mm predetermined value, and the detection is passed; if the temperature T is kept constant, the pressure changes from P to P1 within a specified time delta T, the delta P is more than or equal to delta P0.5, if a O.5 mm leakage hole exists in the sealing system, and the pressure change value delta P within the delta T is 0.5, the judgment is made that the leakage hole of the sealing gas riser waste heat recovery device 14 is more than or equal to a 0.5 mm specified value, the detection fails, the external ECU system records and stores the fault code of the time, the leakage exists, and the rotation of the coil pipe 7 can control the lifting adjusting pipe 9 to realize vertical lifting adjustment along the guide pipe 8, so that the vertical lifting adjustment of the gas riser is facilitated, and the leakage detection efficiency of the gas riser is greatly improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (1)
1. The utility model provides a coke oven raw coke oven gas tedge waste heat recovery device's leakage detection equipment, includes detection water tank (1), its characterized in that: the air leakage detection device is characterized in that a leakage detection disc (2) is fixedly mounted on the top surface of the detection water tank (1), an air pump (3) is arranged at one end of the leakage detection disc (2), the air outlet end of the air pump (3) is fixedly connected with the leakage detection disc (2) through an electromagnetic valve (4), an air bag (15) is arranged in the middle section of the leakage detection disc (2), the air pump (3) is communicated with the air bag (15), guide pipes (8) are symmetrically mounted and welded on the top of the detection water tank (1), a lifting adjusting pipe (9) is connected to the inside of each guide pipe (8) in a sliding mode, a limiting plate (12) is mounted at the top end of each lifting adjusting pipe (9), a floating plate (10) is fixedly mounted at the bottom end of each lifting adjusting pipe (9), a water inlet pump (5) is mounted on one side wall of the detection water tank (1), and a water outlet pump (6, the gas bag is characterized in that a leakage detection mechanism (16) is installed on the gas bag (15), the gas ascending pipe waste heat recovery device (14) is connected to the inside of the gas bag (15) in a matched mode, the gas ascending pipe waste heat recovery device (14) comprises an outer cylinder (141), an inner cylinder (142), a coil pipe (143) and a cavity (144), a barrel-shaped cavity (144) is formed between the outer cylinder (141) and the inner cylinder (142), solid powder heat-conducting media and inert gases are filled in the cavity (144), the inert gases are nitrogen, water or heat-conducting oil is filled in the coil pipe (143), the leakage detection mechanism (16) comprises a temperature sensor (161), a pressure sensor (162) and a timer (163), the temperature sensor (161) and the timer (163) are located on the left side and the right side of the timer (163) respectively, the top end of the guide pipe (8) and the outside of the lifting adjusting pipe (9) are sleeved with rotary pipes (7), a liquid level sensor (13) is mounted on the detection water tank (1), the type of the liquid level sensor (13) is PY201, and the type of the air pump (3) is ZWY-85/110-G or ZWY-110/160-G, ZWY-130/160-G; the power of the air pump motor is 110-160 kw; the maximum air extraction amount is 85-130m 3/min; the type of the electromagnetic valve (4) is 2W-15; the type of the water inlet pump (5) is 400G-8816; the type of the water outlet pump (6) is 50G/75G8806 or TDC5225, and four groups of directional wheels (11) are symmetrically arranged at four corners of the bottom of the detection water tank (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810826509.XA CN108871706B (en) | 2018-07-25 | 2018-07-25 | Leakage detection equipment of waste heat recovery device of crude gas riser of coke oven |
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| CN201810826509.XA CN108871706B (en) | 2018-07-25 | 2018-07-25 | Leakage detection equipment of waste heat recovery device of crude gas riser of coke oven |
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| CN108871706A CN108871706A (en) | 2018-11-23 |
| CN108871706B true CN108871706B (en) | 2020-12-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201497624U (en) * | 2009-08-12 | 2010-06-02 | 浙江豪情汽车制造有限公司 | Engine exhaust manifold leakage tester |
| CN102445313B (en) * | 2010-10-11 | 2015-08-12 | 五冶集团上海有限公司 | Coke oven heating gas pipeline pressure testing device and method |
| CN102768103B (en) * | 2012-07-27 | 2015-05-20 | 武汉钢铁(集团)公司 | Leakage detection method for waste heat recovery device of ascension pipe of coke-oven raw gas |
| CN103257019B (en) * | 2013-04-15 | 2015-11-18 | 中信重工机械股份有限公司 | A kind of air-tightness detection method of sintering deposit stove formula cooling residual heat recovery system |
| CN103592088A (en) * | 2013-11-29 | 2014-02-19 | 长城汽车股份有限公司 | Radiator leak detection tool |
| DE202015003086U1 (en) * | 2015-04-29 | 2015-05-12 | Spacious Industrial Co., Ltd. | Device for leak testing of gas pipe |
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Effective date of registration: 20201028 Address after: 043100 Shanxi city of Yuncheng province Xinjiang Coal Chemical Industrial Park Applicant after: Shanxi CITIC Jinshi Industrial Co., Ltd Address before: 056000 No. 5, Central Road, Dongzhang Ceqian Village, Daizhao Township, Handan City, Hebei Province Applicant before: Wang Zhengfeng |
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Address after: 043100 Coal Chemical Industrial Park, Xinjiang county, Yuncheng City, Shanxi Province Patentee after: Shanxi CITIC Jinshi Industrial Group Co.,Ltd. Address before: 043100 Coal Chemical Industrial Park, Xinjiang county, Yuncheng City, Shanxi Province Patentee before: Shanxi CITIC Jinshi Industrial Co., Ltd |
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