KR20130102878A - Device for cleaning in gas pipe - Google Patents

Device for cleaning in gas pipe Download PDF

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Publication number
KR20130102878A
KR20130102878A KR1020120024045A KR20120024045A KR20130102878A KR 20130102878 A KR20130102878 A KR 20130102878A KR 1020120024045 A KR1020120024045 A KR 1020120024045A KR 20120024045 A KR20120024045 A KR 20120024045A KR 20130102878 A KR20130102878 A KR 20130102878A
Authority
KR
South Korea
Prior art keywords
pipe
gas
discharge
nitrogen gas
cleaning
Prior art date
Application number
KR1020120024045A
Other languages
Korean (ko)
Inventor
송월호
송기현
김건중
정경구
문복용
남기호
김근희
김두현
Original Assignee
전북에너지서비스주식회사
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 전북에너지서비스주식회사 filed Critical 전북에너지서비스주식회사
Priority to KR1020120024045A priority Critical patent/KR20130102878A/en
Publication of KR20130102878A publication Critical patent/KR20130102878A/en

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B5/00Cleaning by methods involving the use of air flow or gas flow
    • B08B5/02Cleaning by the force of jets, e.g. blowing-out cavities
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B7/00Cleaning by methods not provided for in a single other subclass or a single group in this subclass
    • B08B7/0064Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes
    • B08B7/0092Cleaning by methods not provided for in a single other subclass or a single group in this subclass by temperature changes by cooling
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B9/00Cleaning hollow articles by methods or apparatus specially adapted thereto
    • B08B9/02Cleaning pipes or tubes or systems of pipes or tubes
    • B08B9/027Cleaning the internal surfaces; Removal of blockages
    • B08B9/032Cleaning the internal surfaces; Removal of blockages by the mechanical action of a moving fluid, e.g. by flushing
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F17STORING OR DISTRIBUTING GASES OR LIQUIDS
    • F17DPIPE-LINE SYSTEMS; PIPE-LINES
    • F17D3/00Arrangements for supervising or controlling working operations
    • F17D3/14Arrangements for supervising or controlling working operations for eliminating water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B2209/00Details of machines or methods for cleaning hollow articles
    • B08B2209/02Details of apparatuses or methods for cleaning pipes or tubes
    • B08B2209/027Details of apparatuses or methods for cleaning pipes or tubes for cleaning the internal surfaces

Abstract

In order to more completely remove the moisture in the gas pipe and to suppress the generation of water, the cryogenic container containing the liquid nitrogen, vaporizer for vaporizing the liquid nitrogen supplied from the cryogenic container to the cryogenic container with nitrogen gas, the vaporizer A discharge pipe connected to the outlet side of the nitrogen gas is discharged, a regulator installed in the discharge pipe to regulate the discharge pressure of the nitrogen gas discharged through the discharge pipe, an opening and closing valve for opening and closing the discharge pipe, is installed at the distal end of the discharge pipe and connected to the gas pipe To provide a gas pipe cleaning device including a hose for discharging nitrogen gas to the gas pipe.

Description

Gas Pipeline Cleaning Equipment {DEVICE FOR CLEANING IN GAS PIPE}
The present invention relates to a device for cleaning the interior of the gas pipe. More specifically, the present invention relates to a gas pipe cleaning apparatus that enables to reliably clean the inside of a gas pipe using nitrogen gas.
In general, city gas is used in many buildings and houses in cities. Under the land of the city, gas pipelines for supplying city gas are buried. When the gas pipe laying work is completed, foreign substances such as fine chips and water or oil remaining in the gas pipe are removed before supplying gas.
In the conventional case, the inside of the gas pipe was cleaned using high pressure air. That is, by simply injecting a high-pressure air through the end of the gas pipe or the granular pipe formed in the gas pipe to remove foreign substances remaining in the gas pipe.
However, the above-described conventional structure has a problem in that water is generated by itself while the high temperature and high pressure air using the air compressor passes into the gas pipe. Accordingly, a large amount of moisture in the air is cooled and condensed by the temperature change inside the gas pipe, and condensed water is formed inside the gas pipe.
As such, there is a problem in that condensed water is generated in the gas pipe during the gas pipe cleaning process, and the inside of the pipe is corroded by the condensed water. In addition, in the winter, the gas meter freezes due to moisture inside the pipe, thereby preventing the gas supply from being properly performed.
Accordingly, the present invention provides a gas pipe cleaning device capable of more completely removing the water inside the gas pipe and suppressing the generation of water.
To this end, the device is a cryogenic container containing liquid nitrogen, a vaporizer for vaporizing liquid nitrogen supplied from the cryogenic container connected to the cryogenic container with nitrogen gas, a discharge pipe connected to the outlet of the vaporizer to discharge nitrogen gas, the A regulator installed in the discharge pipe to regulate the discharge pressure of the nitrogen gas discharged through the discharge pipe, an opening / closing valve for opening and closing the discharge pipe, and a hose installed at the distal end of the discharge pipe and connected to the gas pipe to discharge the nitrogen gas into the gas pipe; Can be.
The apparatus is connected to the auxiliary vessel filled with nitrogen gas, the branch pipe is connected between the auxiliary vessel and the discharge pipe to transfer the nitrogen gas, the regulator is installed in the branch pipe to regulate the discharge pressure of the nitrogen gas, the branch pipe It may further include an on-off valve installed.
The apparatus may include a bypass pipe connected to the discharge pipe in parallel to transfer nitrogen gas from the vaporizer to the discharge pipe discharge side, and a control valve installed at the bypass pipe to selectively open and close the bypass pipe.
The apparatus may further include an emergency shutoff valve installed at the end of the discharge pipe to block the nitrogen gas discharge.
The branch pipe may have a structure connected to the bypass pipe.
As described above, according to the present embodiment, the use of high-pressure nitrogen gas to clean the inside of the gas pipe can remove the foreign matter inside the pipe, as well as prevent the generation of moisture in the process of removing the foreign matter.
In addition, it is possible to prevent the generation of condensed water due to the temperature change in the pipe by the nitrogen gas remaining inside the pipe after cleaning the gas pipe.
In addition, since it is not necessary to use a separate power source or power for driving the device, it is possible to prevent inconvenience and environmental pollution due to the use of power.
1 is a view showing the configuration of a gas pipe cleaning apparatus according to the present embodiment.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the invention. Wherever possible, the same or similar parts are denoted using the same reference numerals in the drawings.
All terms including technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. Predefined terms are further interpreted as having a meaning consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or very formal meanings unless defined otherwise.
1 shows a gas pipe cleaning apparatus according to the present embodiment.
As shown, the cleaning device 100 is connected to one end of the gas pipe (P) after the completion of the construction of the gas pipe (P) by injecting nitrogen gas into the gas pipe (P), the gas pipe (P) Foreign substances such as chips remaining inside are removed.
To this end, the present cleaning device 100 is a cryogenic vessel (10) containing the liquid nitrogen, vaporizer 20 for vaporizing the liquid nitrogen supplied from the cryogenic vessel (10) to the cryogenic vessel (10) by nitrogen gas ) Is connected to the outlet side of the vaporizer 20, the discharge pipe 30 is discharged nitrogen gas, the regulator 40 is installed in the discharge pipe 30 to adjust the discharge pressure of the nitrogen gas discharged through the discharge pipe 30 (40) And, the opening and closing valve 50 to open and close the discharge pipe 30, the discharge pipe 30 is connected to the gas pipe (P) and includes a hose 60 for discharging nitrogen gas to the gas pipe (P). .
The cryogenic vessel 10 is connected in series through the vaporizer 20 and the connection pipe (12). The liquid nitrogen stored in the cryogenic container 10 is transferred to the vaporizer 20 along the connection pipe 12. The check valve 14 is installed on the connection pipe 12. The check valve 14 moves the liquid nitrogen from the cryogenic vessel 10 to the vaporizer 20 and the movement in the reverse direction is blocked.
Here, the cleaning device 100 has a structure in which nitrogen gas is used as the gas injected into the gas pipe P to clean the gas pipe P. This prevents the generation of moisture in the gas pipe (P).
The vaporizer 20 is not particularly limited as long as it is a structure capable of vaporizing liquid nitrogen with nitrogen gas. In the present embodiment, the vaporizer 20 may be a standby vaporizer. The vaporizer 20 is to vaporize the liquid nitrogen with nitrogen gas at room temperature.
A discharge pipe 30 is installed at the exit side of the vaporizer 20, and a hose 60 is connected to an end of the discharge pipe 30 to inject nitrogen gas into a desired gas pipe P.
One side of the discharge pipe 30 is provided with a regulator 40 for adjusting the nitrogen gas discharge pressure, the opening and closing valve 50 for opening and closing the discharge pipe 30 in front and rear of the regulator 40 is installed. One side of the discharge pipe 30 is further provided with a pressure gauge 32 for detecting the pressure of the nitrogen gas passing through the discharge pipe. The pressure gauge 32 may be installed at the front and rear of the discharge pipe around the regulator 40 and is not particularly limited in the installation position. In addition, an emergency shutoff valve 34 for blocking nitrogen gas discharge is installed at the distal end of the discharge pipe 30.
In this embodiment, the discharge pipe 30 forms a parallel structure. That is, the cleaning device is installed in the bypass pipe 70 and the bypass pipe 70 connected in parallel to the discharge pipe 30 to transfer nitrogen gas from the vaporizer 20 to the discharge pipe 30 exit side. It further includes a control valve 72 for selectively opening and closing the pass pipe (70).
Thus, the apparatus forms a structure in which two pipes between the vaporizer 20 and the hose 60 are connected in parallel with the discharge pipe 30 and the bypass pipe 70. The discharge pipe 30 serves as a main pipe for supplying nitrogen gas, and the bypass pipe 70 assists to supply nitrogen gas by opening a control valve 72 installed in the bypass pipe 70 when necessary. It acts as a tube.
Therefore, when nitrogen gas is not transferred to an abnormality such as the regulator 40 installed in the discharge pipe 30, when the control valve 72 is opened, the nitrogen gas is normally discharged to the hose through the bypass pipe 70. do. That is, nitrogen gas discharged from the vaporizer 20 is supplied to the discharge pipe 30 exit side through the bypass pipe 70 disposed in parallel with the discharge pipe 30, the hose 60 connected to the end of the discharge pipe 30 Squirt through.
On the other hand, the cleaning device 100 has a structure capable of supplying nitrogen gas separately from the cryogenic container 10 in which the liquid nitrogen is accommodated. To this end, the cleaning device is a secondary vessel 80 is filled with nitrogen gas, the branch pipe 82 is connected between the auxiliary vessel 80 and the discharge pipe 30 to transfer the nitrogen gas, the branch pipe ( It is further provided with a regulator 84, which is installed at 82) to regulate the discharge pressure of the nitrogen gas, the on-off valve 86 is installed in the branch pipe (82).
Therefore, even when an abnormality occurs in the process of cleaning the gas pipe (P), such as the vaporizer 20, or all the liquid nitrogen in the cryogenic container 10 is exhausted, in the auxiliary container (80) Using the charged nitrogen gas, it is possible to stably continue the necessary work.
The auxiliary container 80 is a pressure vessel filled with a high-pressure nitrogen gas, the size and nitrogen gas filling capacity is not particularly limited.
In the present embodiment, the auxiliary container 80 is connected to the cryogenic container 10 through a connection pipe 81. A check valve 83 is installed at one side of the connection pipe 81 to block the liquid nitrogen of the cryogenic container 10 from being transferred to the auxiliary container 80.
Here, in more detail, the branch pipe 82 is connected to the bypass pipe 70 which is connected in parallel to the discharge pipe (30). The nitrogen gas supplied through the branch pipe 82 is supplied to the hose 60 through the discharge pipe 30 or the bypass pipe 70 according to whether the discharge pipe 30 or the bypass pipe 70 is opened or closed.
Hereinafter, the operation of the cleaning device will be described.
The cleaning device is loaded on a moving vehicle and moved to a work site in which the gas pipe P is buried to perform internal cleaning of the gas pipe P.
For cleaning the gas pipe (P), first, the hose 60 installed in the cleaning device is coupled to the tip of the gas pipe (P). When the hose 60 is connected to the gas pipe (P) to adjust the regulator 40 installed in the discharge pipe 30 to set the nitrogen gas discharge pressure. Then, the cryogenic vessel 10 and the vaporizer 20 are opened and operated to open and close the valve 50 installed in the discharge pipe 30 to discharge nitrogen gas.
At this time, the on-off valve 86 of the branch pipe 82 connected to the auxiliary container 80 and the control valve 72 of the bypass pipe 70 are closed to prevent nitrogen gas from flowing.
Accordingly, the liquid nitrogen stored in the cryogenic container 10 is transferred to the vaporizer 20 through the connection pipe 12 as the cryogenic container 10 is opened, and vaporized from the liquid state to the gas state while passing through the vaporizer 20. do.
Nitrogen gas vaporized while passing through the vaporizer 20 is discharged at a set pressure through the discharge pipe (30). Nitrogen gas is ejected into the gas pipe (P) through the hose 60 connected to the discharge pipe 30 end.
Therefore, foreign matter such as chips in the gas pipe P and moisture are removed by the nitrogen gas injected into the gas pipe P.
In the gas pipe P cleaning process, as nitrogen gas is injected into the gas pipe P, moisture is not generated in the gas pipe P at all. As the nitrogen gas remains inside the gas pipe P after the cleaning operation of the gas pipe P is completed, condensed water does not occur at all due to the temperature change in the gas pipe P.
In this way, the cleaning device is capable of removing essentially the moisture generated in the gas pipe (P) in cleaning the gas pipe (P).
While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, Of course.
10: cryogenic container 12: connection piping
20: carburetor 30: discharge pipe
40: regulator 50,86: on-off valve
60: hose 70: bypass pipe
72: control valve 80: auxiliary container
82: branch pipe

Claims (5)

  1. A cryogenic container containing liquid nitrogen, a vaporizer connected to the cryogenic container to vaporize the liquid nitrogen supplied from the cryogenic container with nitrogen gas, a discharge pipe connected to the outlet of the vaporizer to discharge nitrogen gas, and a discharge pipe installed in the discharge pipe. Regulator for adjusting the discharge pressure of the nitrogen gas discharged through the gas pipe cleaning device including a hose for opening and closing the discharge pipe, the hose is installed at the distal end of the discharge pipe connected to the gas pipe to discharge the nitrogen gas into the gas pipe.
  2. The method of claim 1,
    An auxiliary container filled with nitrogen gas, a branch pipe connected between the auxiliary container and the discharge pipe to transfer nitrogen gas, a regulator installed in the branch pipe to regulate the discharge pressure of nitrogen gas, and an opening and closing installed in the branch pipe. Gas pipe cleaning device further comprises a bab.
  3. 3. The method according to claim 1 or 2,
    And a bypass pipe connected to the discharge pipe in parallel to transfer nitrogen gas from the vaporizer to the discharge pipe outlet, and a control valve installed at the bypass pipe to open and close the bypass pipe.
  4. The method of claim 3, wherein
    The branch pipe is a gas pipe cleaning device of the structure connected to the bypass pipe.
  5. 5. The method of claim 4,
    The gas pipe cleaning device further includes an emergency shut-off valve installed at the distal end of the discharge pipe to block nitrogen gas discharge.
KR1020120024045A 2012-03-08 2012-03-08 Device for cleaning in gas pipe KR20130102878A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020120024045A KR20130102878A (en) 2012-03-08 2012-03-08 Device for cleaning in gas pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020120024045A KR20130102878A (en) 2012-03-08 2012-03-08 Device for cleaning in gas pipe

Publications (1)

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KR20130102878A true KR20130102878A (en) 2013-09-23

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KR1020120024045A KR20130102878A (en) 2012-03-08 2012-03-08 Device for cleaning in gas pipe

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103962351A (en) * 2014-04-21 2014-08-06 鞍钢股份有限公司 Method for sweeping chemical raw material conveying pipelines
CN104438242A (en) * 2014-09-09 2015-03-25 莱芜钢铁集团电子有限公司 Gas pipeline maintaining system
CN104806890A (en) * 2015-04-10 2015-07-29 中国石油天然气集团公司 Condensate collector convenient for gas-liquid-solid separation
CN109159762A (en) * 2018-08-28 2019-01-08 曹锋 A kind of device and method using tetrafluoroethane cleaning air conditioning for automobiles

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103962351A (en) * 2014-04-21 2014-08-06 鞍钢股份有限公司 Method for sweeping chemical raw material conveying pipelines
CN104438242A (en) * 2014-09-09 2015-03-25 莱芜钢铁集团电子有限公司 Gas pipeline maintaining system
CN104806890A (en) * 2015-04-10 2015-07-29 中国石油天然气集团公司 Condensate collector convenient for gas-liquid-solid separation
CN109159762A (en) * 2018-08-28 2019-01-08 曹锋 A kind of device and method using tetrafluoroethane cleaning air conditioning for automobiles

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E601 Decision to refuse application