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Underground pipeline waste gas leakage early warning and treatment system and method

An underground pipeline and processing system technology, applied in the field of underground pipeline waste gas leakage early warning and processing system, can solve the problems of low processing efficiency, difficult to locate the leakage point, difficult to collect, etc., and achieve high collection efficiency, low cost and good processing effect. Effect

Pending Publication Date: 2021-12-31
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] Aiming at the problems of concealed leakage of exhaust gas from underground pipeline networks, difficulty in locating leakage points, high difficulty in collection, and low treatment efficiency, the present invention provides a system and method for early warning and treatment of exhaust gas leakage in underground pipelines. Based on the types and laws of sewage discharge in different regions, Constructed a system solution for underground pipeline exhaust gas leakage warning, collection and treatment, and standard discharge, established a big data processing model of pipeline exhaust gas emission, combined with aerodynamics and environmental engineering principles, and strived to cover all pipeline nodes, fully collect pipeline exhaust gas, and exhaust gas types. Treatment and exhaust emissions are all up to standard

Method used

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  • Underground pipeline waste gas leakage early warning and treatment system and method
  • Underground pipeline waste gas leakage early warning and treatment system and method
  • Underground pipeline waste gas leakage early warning and treatment system and method

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Experimental program
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Embodiment 1

[0089] refer to Figure 1-5 As shown, an underground pipeline exhaust gas leakage early warning and treatment system of the present invention includes three subsystems: an underground pipeline exhaust gas leakage early warning system 1 , an exhaust gas collection system 2 , and an exhaust gas treatment system 3 . Wherein the underground pipeline exhaust gas leakage early warning system 1 includes an inspection well room 1-1, a drainage pipeline 1-2, a pipeline joint 1-3, and pipeline exhaust gas 1-4.

[0090] Exhaust gas collection system 2 includes sealing colloid 2-1, porous suction cup 2-2, anti-seepage valve 2-3, longitudinal air intake pipe 2-4, horizontal air intake pipe 2-5, one-way valve 2-6, storage air bag 2- 7. Air pressure sensor 2-8, vacuum pump 2-9, rotary valve 2-10. The storage air bag 2-7 is arranged above the drainage pipe 1-2, and the horizontal and vertical air intake pipes are arranged between the drainage pipe 1-2, and the storage air bag 2-7 is provided...

Embodiment 2

[0135] Others are the same as embodiment 1.

[0136] Odor Pollutant H 2 The maximum allowable emission concentration of S is 0.15mg / m 3 , then K=1.93>0.99, then it is determined that the treated pipeline exhaust gas 1-4 does not meet the standard and prohibits discharge, and at the same time the initial concentration of pipeline exhaust gas 1-4 is C 1 and emission concentration C 2 Carry out comparative judgment, judge whether to need to replace filter material layer, its judgment method is as formula 5.

[0137]

[0138] Note: η: Exhaust gas removal rate, dimensionless;

[0139] H in the treated pipeline exhaust gas 1-4 2 S emission concentration, take 0.29mg / m 3 ;

[0140] H in pipeline exhaust gas 1-4 2 S initial concentration, take 1.0mg / m 3 ;

[0141] NH in the treated pipeline exhaust gas 1-4 3 Emission concentration, take 0.38mg / m 3 ;

[0142] NH in pipeline exhaust gas 1-4 3 Initial concentration, take 7.0mg / m 3 ;

[0143] CH in the treated ...

Embodiment 3

[0148] Others are the same as embodiment 2.

[0149]CH in pipeline exhaust gas 1-4 4 The initial concentration is 0.7mg / m 3 , after calculating η=0.5<0.63, the central processing unit 3-8 determines that the filter material needs to be replaced, the signal is transmitted to the hydraulic lifting rod 3-6, and the hydraulic lifting rod 3-6 starts to lift the load-bearing platform 3-7 above the ground, The replaced filter material layer needs to be removed for harmless treatment, and the new filter material layer is stacked from bottom to top as coarse filter material layer 3-2, medium filter material layer 3-3, and fine filter material layer 3-4 .

[0150] Example 2

[0151] Others are the same as embodiment 1.

[0152] Step 4) central processing unit 3-8 is to initial concentration C 1 , emission concentration C 2 Correlation analysis with filter particle size d, T 1 The time calculation formula is shown in Equation 6.

[0153]

[0154] Note: Y: The emission concentr...

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Abstract

The invention discloses an underground pipeline waste gas leakage early warning and treatment system and method. The system comprises three subsystems including an underground pipeline waste gas leakage early warning system (1), a waste gas collection system (2) and a waste gas treatment system (3). The waste gas collection system is located above a drainage pipeline and is in communication with the drainage pipeline through a longitudinal gas inlet pipe and a transverse gas inlet pipe, and the waste gas treatment system is arranged above the waste gas collection system and is in communication with the waste gas collection system through a rotary valve; and waste gas generated in the underground pipeline system is collected through internal pressure control of the waste gas collection system, enters a gas treatment device of the waste gas treatment system and is adsorbed and degraded layer by layer, and finally, the waste gas is harmlessly discharged in a standard reaching manner. According to the underground pipeline waste gas leakage early warning and treatment system, a system solution for underground pipeline waste gas leakage early warning, collection treatment and up-to-standard emission is constructed, and precise detection, comprehensive collection and efficient treatment are achieved by combining aerodynamics and environmental engineering principles. The system has the advantages of high early warning precision, high collection efficiency, good treatment effect, low investment and operation cost and convenience in operation and management.

Description

technical field [0001] The invention belongs to the field of waste gas collection and treatment, and the field of environmental engineering waste gas treatment, and in particular relates to an underground pipeline waste gas leakage early warning and treatment system and method. Background technique [0002] As an important infrastructure in cities and parks, underground pipelines undertake the functions of sewage collection and transportation. With the deposition of pollutants in the sewage and the mixing of various waste water, the generation and leakage of exhaust gas in the pipeline are caused. However, due to the fact that the underground pipeline is located underground, it is difficult to find and warn, the location of the leak is difficult to locate accurately, the collection is difficult, and the processing efficiency is not high, which brings unforeseen risks and hazards to the atmospheric environment, further endangers human health, and seriously affects surrounding...

Claims

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Application Information

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IPC IPC(8): F17D5/06B01D46/00B01D46/30B01D46/44G01M3/02G01M3/28
CPCF17D5/06B01D46/30B01D46/44G01M3/02G01M3/2807Y02T10/40
Inventor 许明沈晓笑马吴成高鹏侯文静尹俊丁刘志超薛朝霞操家顺
Owner HOHAI UNIV
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