KR20020052504A - Automatic apparatus for inspecting gas pipe laying - Google Patents

Abstract

PURPOSE: An apparatus for automatically inspecting gas purge in dispersion pipe of water seal valve on gas pipe is provided to prevent poisoning of the gas and falling accident of workers by efficiently and safely sensing gas exhausted to the air through the dispersion pipe attached to the water seal valve using a CO sensor. CONSTITUTION: The apparatus for automatically inspecting gas purge in dispersion pipe of water seal valve on gas pipe comprises a gas inlet part(1) for flowing in gas in the dispersion pipe; an antenna type pipe part(9) for supplying gas in a cooling unit; an electromagnetic part(13) which is attachable onto the dispersion pipe; a dehumidifier unit part(14) for removing humidity of wet gas; a cyclone type nitrogen ejection nozzle part(16) for drying a filter in the dehumidifier unit; a discharge unit part(26) for discharging drain discharged from a gas cooling unit; and an automatic gas purge sensing unit part(22).

Description

AUTOMATIC APPARATUS FOR INSPECTING GAS PIPE LAYING}

The present invention relates to an automatic gas purge detection device for a gas pipe water seal side dissipation pipe. More specifically, the gas discharged to the atmosphere through a gas discharge pipe attached to the water seal side is efficiently It is to safely detect and prevent gas poisoning and fall accidents of workers.

The gas generated in steel mills is produced from blast furnace facilities where BFG (BLAST FURNACE GAS) is generated and molten iron produced from coke plant blast furnace where COG (COKE OVEN GAS) is generated. The gas generated is a highly toxic toxic gas containing "a large amount of CO" ("CO content BFG: 20%. COG: 8.4%. LDG: 64.2%").

In addition, the generated gas has a high flow rate (BFG: 2.2 million N㎥ / Hr, COG: 300,000 N㎥ / Hr.LDG: 180,000 N㎥ / Hr) Large capacity piping (BFG: 3800A COG: 2500A. LDG: 2000A (N2) replacement method, which is a commonly used gas pipe purge method, requires too much time and nitrogen so that gas is blocked in the section to be gas purged to purge large pipes. Water seal side Fill the water 'V' side with water seal.

One side of the water side attached to the water side opens the valve to allow air to be sucked in, and the other side of the water pipe opens the gas pipe to allow gas to be discharged, and then opens the steam valve installed inside the gas pipe. The pressure (12Kg / ㎠) injected through the steam nozzle increases the speed of the airflow, which creates a negative (-) pressure. The venturi effect causes the gas in the pipe to be ejected to the atmosphere together with the steam. Air is sucked into the open dissipation tube.

As air is sucked into the open dissipation pipe on the opposite side as the amount of gas blown out to the atmosphere, it adopts a method of discharging and replacing the gas in the pipe with air, but the discharged gas is discharged from the ground (8 ~ 10m) with high temperature steam. The gas purge worker is discharged through the discharge pipe installed at the height of 1.7 ~ 1.9m on the upper side of the submerged valve so that the gas purge worker can be frequently steamed by STEAM EJECTING to know the gas concentration in the pipe. (When gas is exhausted about 7 times, when it is exhausted: 4 times, and when it is injected: 3 times) Gas detection is detected by a pump-type manual detector.

However, it is impossible to secure a working space every time gas is detected. There is a problem in that the detection work is carried out in close proximity to the gas discharge point (30-40 cm from the discharge point), and the worker is constantly exposed to the risk of accidental poisoning fall due to the gas.

Problems caused by gas detection with a manual pump type detector close to the dissipation pipe installed at the gas height (10 ~ 11m) during gas purge and penetration of the gas pipe due to repair and inspection of the gas pipe are as follows.

(1) The gas emitted from the dissipation pipe is constantly exposed to poisoning by gas poisoning when gas is detected.

(2) There is a risk of burns due to high temperature steam caused by steam ejecting.

(3) Work evasion occurs due to psychological anxiety caused by the problem of the fall accident caused by the aerial work.

(4) When the gas is exhausted, it is impossible to accurately determine the timing of the exhaust gas, which can cause a delay in working time. Especially, when the gas is injected, the gas flow is completed when the oxygen concentration in the gas is less than (2%). Since it is not known exactly, the amount of emitted gas is usually increased, which is a big problem of environmental pollution.

The present invention has been made in view of the above-described problems of the prior art, and has been created to solve this problem. After the high temperature gas discharged by the flow rate of steam due to steam ejecting is cooled in a gas cooling device, a dehumidifier device and a filter. It is an object of the present invention to provide an automatic gas purge detection device for gas pipe water discharge valves to remove residual moisture in gas and to detect residual gas concentration in an automatic gas detector.

The above object of the present invention and the gas inlet for introducing gas in the discharge pipe; An antenna type pipe part for supplying gas from a cooling device; An electromagnet portion which can be attached to the radiation tube; A dehumidifier device unit capable of removing humidity of humid gas; A cyclone-type nitrogen injection nozzle unit capable of drying the filter in the dehumidifier device; A discharge device unit capable of discharging the drain discharged from the gas cooling device; It is achieved by including the gas purge automatic detecting device unit.

1 is a working state diagram for detecting the gas concentration with a manual gas detector of the gas concentration discharged from the defense pipe according to the prior art,

Figure 2 is a layout view showing the gas pipe water seal side dissipation pipe gas purge automatic detection device according to the present invention,

Figure 3a is a perspective view showing a gas intake device portion of the gas pipe water seal side dissipation pipe gas purge automatic detection device according to the present invention,

Figure 3b is a perspective view showing an electromagnet that can be attached to the dissipation pipe of the gas pipe water seal side dissipation pipe gas purge automatic detection device according to the present invention,

Figure 3c is a perspective view of the gas suction pipe assembly assembled in the antenna type of the gas pipe water seal side dissipation pipe gas purge automatic detection device according to the present invention,

Figure 3d is a perspective view showing a gas cooling device of the gas pipe water seal side dissipation pipe gas purge automatic detection device according to the present invention,

Figure 3e is a perspective view showing a gas dehumidifier device unit of the gas pipe water seal side dissipation pipe gas purge automatic detection device according to the present invention.

Explanation of symbols on the main parts of the drawings

1: gas suction nozzle 2: discharge pipe

3: electromagnet 4: steam injection nozzle

5: Dissipation pipe shutoff valve 6: Gas purge side water seal valve (gas shutoff)

7: Air suction side dissipation pipe 8: Gas suction side water seal side (gas shutoff)

9: Antenna type gas suction pipe 10: Gas suction line (LINE)

11: gas inlet pipe shutoff valve 12: gas cooler inlet pipe

13: Gas Cooling Device 14: Dehumidifier (DRIER) Device

15: dehumidifier filter (FILTER) 16: filter drying apparatus using nitrogen

17: gas detection device disassembly assembly unit 18. Gas Chiller Complete Purge Valve

19: gas detector inlet piping 20: dehumidifier inlet piping

21: gas discharge prevention seal pit 22: automatic gas detector

23: detector gas shutoff valve 24: manual gas detector detection point

25: condensate discharge line 26: condensate collection port (DRAIN POT)

27: water collecting pit row condensate discharge piping 201: gas purge discharge pipe

202: injection nozzle for gas exhaust steam ejecting

203: gas purge pipe 204: gas pipe valve operating table

205: manual gas detector 206: gas field detection state of the discharge pipe

207: Opposite waterside side pipe (air intake)

208: water discharge valve gas purge side

209: water supply shutoff seal port upper valve 210: drain discharge seal port body

211: air intake side gas shutoff water seal side 101: chiller gas supply piping

102: Funnel-type suction device designed to facilitate gas supply

103: gas inlet 301: antenna type gas intake pipe

302: electromagnet body 303: gas suction pipe fastening bolt

901: funnel type gas inlet 902: antenna type gas inlet tube

1301: hot gas supply pipe 1302: cooling water (COOLING WATER)

1303: supply gas 1304: cooling water supply piping

1305: cooled gas discharge pipe 1306: coolant drain pipe

1401: cooling gas supply pipe 1402: filter for gas dehumidification (DRIER)

1403: saturated wet gas 1404: cyclone injection nozzle

1405: nitrogen supply pipe for filter drying 1406: dehumidified dry gas supply pipe

1407: drain discharge pipe

Hereinafter, a preferred embodiment according to the present invention will be described in more detail on the basis of the accompanying drawings. Figure 2 is a layout view showing the gas pipe water seal side dispersing pipe gas purge automatic detection device according to the present invention, Figure 3a is a perspective view showing a gas intake device of the gas pipe water sealing side dissipation pipe gas purge automatic detection device according to the present invention. Figure 3b is a perspective view showing an electromagnet that can be attached to the dissipation pipe of the gas pipe water seal side dissipation pipe gas purge automatic detection device according to the present invention, Figure 3c is a gas pipe water seal side dissipation pipe gas purge according to the present invention 3 is a perspective view illustrating a gas suction pipe unit assembled to an antenna type of the automatic detection device, and FIG. 3D is a perspective view illustrating a gas cooling device unit of the gas purge automatic discharge device gas purge detection device according to the present invention, and FIG. It is a perspective view which shows the gas dehumidifier apparatus part of the gas pipe water sealing side dissipation pipe gas purge automatic detection apparatus which concerns on this invention.

According to FIG. 2 to FIG.

1) Suction nozzle for sending gas samples to the chiller

2) Electromagnet device that can attach gas suction pipe to dissipation pipe

3) Cooling unit to cool high temperature gas and remove impurities

4) Drying part which can remove humidity of gas

5) It is configured as a pipe that can discharge the gas sucked into the gas cooling unit to the outside.

6) It is composed of drain discharge condensate port (POT) to discharge condensate from gas (GAS) detector.

The present invention made up of such a configuration works as follows.

Automatic gas purge detector first detects high temperature gas ejected by siphon phenomenon caused by the injection pressure of steam nozzle in the dissipation pipe with automatic gas detector. Install the automatic gas detector after attaching the electromagnet to the dissipation pipe so that it can be fixed.

The operation of the automatic gas detector is based on the valve operation of the gas sucked through the antenna-type gas suction pipe, and the air inside the automatic gas detector is completely discharged to the atmosphere, and then the siphon phenomenon in the pipe due to the injection pressure of the steam nozzle in the discharge pipe. The gas supplied through the funnel-type gas suction nozzle of the hot gas sucked and ejected by the gas is elevated due to the high temperature of the steam, so the gas is cooled to enable detection by the automatic gas detector. Dehumidifier device designed to remove the humidity of the gas for stable operation of the detector by the gas cooled through the device is a cause of malfunction and malfunction of the automatic gas detector as a saturated gas containing a lot of humidity Automatic gas detection when dry gas is needed after removing humidity by passing through It is a device designed to detect gas safely and accurately, and the gas continuously supplied on the sample gas used in the automatic gas detector shuts off the valve, and the remaining gas is dissipated to the atmosphere. have. In addition, when the performance of the dehumidifier device is reduced due to saturated humid gas, the filter drying device is dried using nitrogen supplied through the filter, and the drain of each part discharged from the gas detection automatic device is sealed through the drain port. Through the SEAL PIT).

As described in detail above, the present invention is to detect the concentration of the gas discharged by the formation of (-) pressure in the pipe by the ejection of steam in the discharge pipe installed in the upper side of the water seal (CL: 10 ~ 12m) when purging the gas pipe In order to prevent unsafe work and burn accidents caused by gas poisoning, it is possible to prevent unsafe work and gas poisoning by detecting the concentration of gas with a manual pump type detector using a gas detector rod on the top of the control panel. If the concentration is needed, the gas concentration can be continuously detected, so the accurate gas concentration can be predicted. Therefore, it is possible to predict when the gas will be fully spread. It can be supplied as a predictable time for supplying stable gas to the plant. Provides the effect to prevent.

Claims (1)

A gas inlet (1) for introducing gas into the dissipation pipe; An antenna type pipe part 9 for supplying gas from a cooling device; An electromagnet portion 13 which can be attached to the radiation tube; A dehumidifier device unit 14 capable of removing the humidity of the wet gas; A cyclone-type nitrogen injection nozzle unit 16 capable of drying the filter in the dehumidifier device; A discharge device unit 26 capable of discharging the drain discharged from the gas cooling device; Gas purge automatic sealing device gas purge automatic detection device, characterized in that comprises a gas purge automatic detection unit 22.