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

AI Technical Summary

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

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

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0088] Example 1

[0089] Refer Figure 1-5 As shown, an underground pipe exhaust gas leakage early warning and processing system includes a sub-system of the underground pipe exhaust gas leakage early warning system 1, an exhaust gas collection system 2, an exhaust gas treatment system. Among them, the underground pipe exhaust gas leak warning system includes inspection of well chamber 1-1, drainage pipes 1-2, pipe joints 1-3, pipe exhaust gas 1-4.

[0090] The exhaust gas collection system 2 includes a sealant 2-1, a porous suction cup 2-2, an anti-seepage valve 2-3, a longitudinal air tube 2-4, a lateral intake pipe 2-5, a one-way valve 2-6, a storage airbag 2- 7, air pressure sensor 2-8, vacuum pump 2-9, rotating valve 2-10. The gas supply airbag 2-7 is disposed above the drainage pipes 1-2, and there is a transverse, longitudinal air intake pipe, and a vacuum pump 2-9 and a gas pressure sensor 2-8, and the storage airbag 2-7 is provided between the drainage pipes 1-2. It is ea...

Example Embodiment

[0134] Example 2

[0135] Others in Example 1.

[0136] Agod pollutant H 2 S maximum allowed emission concentration of 0.15 mg / m 3 However, K = 1.93> 0.99, the determination of the processed pipe exhaust gas 1-4 does not meet the standard to prohibit emissions, while the pipe exhaust gas 1-4 initial concentration C 1 Emissions concentration C 2 The comparison determination is performed, and it is determined whether the replacement filter layer is required, and the method is determined as in the formula 5.

[0137]

[0138] Note: η: Exhaust gas removal rate, no dimension;

[0139] Treated pipe exhaust gas 1-4 in h 2 S emission concentration, take 0.29mg / m 3 ;

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

[0141] Treatment of pipe exhaust gas 1-4 in NH 3 Emission concentration, take 0.38mg / m 3 ;

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

[0143] Treated pipe exhaust gas 1-4 in CH 4 Emission ...

Example Embodiment

[0147] Example 3

[0148] Others in Example 2.

[0149]Pipe exhaust gas 1-4 in CH 4 Initial concentration 0.7mg / m 3 After calculation η = 0.5 <0.63, the central processor 3-8 determines that the filter material is required, the signal is transmitted to the hydraulic lifting rod 3-6, and the hydraulic lifting rod 3-6 starts to lift the load platform 3-7 to the ground, The replacement filter layer needs to transport harmless treatment, and the new filter material is in the bottom of the coarse filter layer 3-2, medium filter layer 3-3, fine filter layer 3-4 to stack .

[0150] Example 2

[0151] Others in Example 1.

[0152] Step 4) Central Processor 3-8 on the initial concentration C 1 , Emission concentration C 2 Correlated analysis with filter material particle size D, T 1 Time Computational Formula is 6.

[0153]

[0154] Note: Y: Value concentration value in pipe exhaust gas 1-4, take 0.35mg / m 3 ;

[0155] X 1 : Pipe exhaust gas 1-4 initial concentration value, take 7.0mg...

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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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