Summary of the invention
The object of the present invention is to provide a kind of blowing method and purging system of hollow conductor, through this blowing method and the purging system inner foreign matter of hollow conductor more effectively.
In order to achieve the above object; As one aspect of the present invention; A kind of blowing method of hollow conductor is provided, and wherein, this blowing method comprises alternately in said hollow conductor, feeding to have the first fluid medium of first predetermined pressure and second fluid media (medium) with second predetermined pressure.
Preferably, said second predetermined pressure is greater than said first predetermined pressure.
Preferably, said first predetermined pressure is 0.3 to 0.7MPa.
Preferably, said second predetermined pressure than said first predetermined pressure big 0.2 to 0.5MPa.
Preferably, said blowing method also comprises said first predetermined pressure of adjusting and/or said second predetermined pressure.
Preferably, said blowing method also comprises the feeding time of said first fluid medium of control and/or said second fluid media (medium).
Preferably, the said feeding time is 1 to 5 second.
Preferably, said first fluid medium is a liquid, and said second fluid media (medium) is a gas.
Preferably, under the normal temperature and pressure, the solubility of said second fluid media (medium) in the first fluid medium is less than 0.1g/L.
Preferably, said liquid is water.
Preferably, said gas is nitrogen.
As another aspect of the present invention; A kind of purging system of hollow conductor is provided; Wherein, This purging system comprises first-class body source with first predetermined pressure and second fluid source with second predetermined pressure, and this first-class body source and second fluid source are used for alternately in said hollow conductor, feeding the first fluid medium and second fluid media (medium).
Preferably, said second predetermined pressure is greater than said first predetermined pressure.
Preferably, said first predetermined pressure is 0.3 to 0.7MPa.
Preferably, said second predetermined pressure than said first predetermined pressure big 0.2 to 0.5MPa.
Preferably, said first fluid medium is a liquid, and second fluid media (medium) is a gas.
Preferably, under the normal temperature and pressure, the solubility of said second fluid media (medium) in the first fluid medium is less than 0.1g/L.
Preferably, said first-class body source comprises giant.
Preferably, said second fluid source comprises the elevated pressure nitrogen gas tank.
The present invention is through feeding the fluid media (medium) with different pressures in hollow conductor, thereby can produce bigger impulsive force at the inwall of hollow conductor, and then more effectively removes the foreign matter on the inwall of hollow conductor.
Other features and advantages of the present invention will partly specify in embodiment subsequently.
Embodiment
Be elaborated below in conjunction with the accompanying drawing specific embodiments of the invention.Should be understood that embodiment described herein only is used for explanation and explains the present invention, is not limited to the present invention.
Shown in Fig. 1 is the sketch map of the blowing method of hollow conductor of the present invention; Shown in figure, this blowing method comprises alternately in said hollow conductor, feeding to have the first fluid medium of first predetermined pressure and second fluid media (medium) with second predetermined pressure.
After in hollow conductor, feeding the first fluid medium, and then in hollow conductor, feed second fluid media (medium), the first fluid medium receives the promotion of second fluid media (medium).Usually, the time in feeding time remaining several seconds of the first fluid medium and second fluid media (medium) gets final product.
Second fluid media (medium) produces impetus to the first fluid medium, thereby the first fluid medium is quickened when this first fluid medium of second fluid media (medium) contact, and then the inwall of hollow conductor is produced bigger impulsive force.And, when the first fluid velocity of medium changes, can on the inwall of hollow conductor, produce bigger stress, thereby remove the foreign matter on the inwall of hollow conductor more easily.
In addition, alternately the feeding of the first fluid medium and second fluid media (medium) makes foreign matter on the inwall of hollow conductor receive the impulsive force of alternate, more be easy to generate loosening, thereby be more prone to come off.
The impulsive force that the inwall of hollow conductor is produced is big more, can remove the foreign matter on the hollow conductor effectively more.
In the present invention, the feeding of the first fluid medium and second fluid media (medium) can replace once, also can replace repeatedly, confirms according to the concrete condition of foreign matter on the inwall of the length of hollow conductor and hollow conductor.
When the blowing method of the described hollow conductor of embodiment of the present invention; Can hollow conductor directly be connected with the fluid source that the first fluid medium and second fluid media (medium) are provided, realize that through the control flows body source alternately feeding of the first fluid medium and second fluid media (medium) gets final product then.The pressure that it is pointed out that said first fluid medium is meant the pressure of the fluid source that this first fluid medium is provided, but not the pressure of first fluid medium in said hollow conductor.In like manner, the pressure of the fluid source that also provides this second fluid medium that the pressure of second fluid media (medium) refers to, rather than refer to the pressure of second fluid media (medium) in hollow conductor.
As another aspect of the present invention, a kind of purging system of implementing the blowing method of above-mentioned hollow conductor is provided also.This purging system comprises first-class body source with first predetermined pressure and second fluid source with second predetermined pressure, and this first-class body source and second fluid source are used for alternately in said hollow conductor, feeding the first fluid medium and second fluid media (medium).
When using above-mentioned purging system to purge hollow conductor; Can use common triple valve that the first-class body source and second fluid source are communicated with hollow conductor; Only need to realize alternately feeding the first fluid medium and second fluid media (medium), also can control the first fluid medium and second fluid media (medium) alternately feeds in the hollow conductor through the switching of controlling the first-class body source and second fluid source to hollow conductor inside through the control triple valve.
When using above-mentioned purging system to purge hollow conductor, can also use blow device, the first-class body source and second fluid source are connected with hollow conductor.
Shown in Fig. 2 is a kind of sketch map of blow device of the blowing method of the described hollow conductor of embodiment of the present invention.Shown in figure, this device comprises the input part 11 and efferent 12 that is connected.And input part 11 comprises input pipe 11b and the inlet 11a that is arranged on this input pipe 11b two ends, and efferent 12 comprises efferent duct 12b and the outlet 12a that is arranged on the end of this efferent duct 12b, and the other end of efferent duct 12b links to each other with input pipe 11a.For the ease of being connected with hollow conductor, also be provided with blow gun 12c in the outlet, this blow gun 12c comprises cylindrical end and the conical end that links to each other with this cylindrical end, and said cylindrical end matches with outlet 12a, and said conical end matches with said hollow conductor.
The blow gun 12c of this blow device is connected with hollow conductor, provides the first-class body source of first fluid medium and second fluid source that second fluid media (medium) is provided to be connected with two inlet 11a respectively.The first fluid medium and second fluid media (medium) flow into input pipe 11 through two inlet 11a respectively, and the outlet 12a through the efferent duct 12b that is connected with input pipe 11 to get into hollow conductor inner.
When alternately the feeding of control first fluid medium and second fluid media (medium), can adopt several different methods.For example, alternately feeding of the first fluid medium and second fluid media (medium) controlled in the switching that can control second fluid source of the first-class body source that the first fluid medium is provided and second fluid media (medium).Promptly; At first open the first-class body source that the first fluid medium is provided; To provide the first-class body source of first fluid medium to close after the feeding time remaining scheduled time of first fluid medium; Open second fluid source that second fluid media (medium) is provided then immediately, same, after the feeding time remaining scheduled time of second fluid media (medium), will provide second fluid source of second fluid media (medium) to close.Aforesaid operations continues to carry out just can realizing alternately feeding of the first fluid medium and second fluid media (medium).
In the present invention; If the blow device shown in use Fig. 2 is to purging on the hollow conductor; Can also break valve 11c be installed respectively at two inlet 11a places of this blow device; Like this, under the state that fluid source is opened, the switching that only needs control to be positioned at the break valve 11c at two inlet 11a places can realize alternately feeding of the first fluid medium and second fluid media (medium).
Preferably, said second predetermined pressure is greater than said first predetermined pressure.Thereby make second fluid media (medium) can play the effect of acceleration, thereby make the first fluid medium produce bigger impact the inwall of hollow conductor to the first fluid medium.Correspondingly, in the purging system of hollow conductor provided by the present invention, first predetermined pressure of first-class body source is greater than second predetermined pressure of second fluid source.
Now between 2mm to 15mm, wall thickness is about 3mm to the internal diameter of hollow conductor commonly used usually, and the pressure that can bear according to the lead wall of hollow conductor is 0.8MPa, and preferably, first predetermined pressure is 0.3 to 0.7MPa.Preferably, said second predetermined pressure than said first predetermined pressure big 0.2 to 0.5MPa.Thereby both can remove the foreign matter on the hollow conductor inwall, and can avoid hollow conductor to damage again because of internal pressure is excessive.
According to the material of hollow conductor and the difference of the length of service time, the bond strength of the foreign matter that adheres on the inwall of hollow conductor and hollow conductor inwall and the thickness of foreign matter also can be different.The time that hollow conductor uses is long more, and is thick more attached to the foreign matter on the inwall on the hollow conductor, in conjunction with also firm more.Therefore, in the blowing method of hollow conductor of the present invention, can also regulate the size of said first predetermined pressure and/or said second predetermined pressure according to the thickness size of foreign matter on the inwall of hollow conductor.
And, in purge, also can regulate the size of first predetermined pressure and/or second predetermined pressure.For example, when purging had just begun to carry out, the foreign matter on the inwall of hollow conductor was thicker, can use first fluid medium with first bigger predetermined pressure and second fluid media (medium) with second bigger predetermined pressure that hollow conductor is purged.First fluid medium with first bigger predetermined pressure with have after the second bigger fluid media (medium) purges certain hour to hollow conductor; Foreign matter can become flexible on the inwall of hollow conductor; And thickness meeting attenuation at this moment, can suitably be turned down first predetermined pressure and second predetermined pressure.
The method of controlling first predetermined pressure and second predetermined pressure also can have multiple.For example, can provide second fluid source of the first-class body source of first fluid medium and second fluid media (medium) to control the size of first predetermined pressure and second predetermined pressure through control.When using the blowing method of the described hollow conductor of blow device embodiment of the present invention shown in Fig. 2, can also be at two inlet 11a places difference install adjustment valves of this blow device, with the first fluid medium of adjusting feeding and the pressure of second fluid media (medium).
As stated, this method can also comprise the feeding time of said first fluid medium of control and/or said second fluid media (medium).Likewise, the feeding time that can provide the switching of the first-class body source of first fluid medium to control the first fluid medium through control, and provide the switching of second fluid source of second fluid media (medium) to control the feeding time of second fluid media (medium) through control.When using the blowing method of the described hollow conductor of blow device embodiment of the present invention shown in Fig. 2, can also control the feeding time of the first fluid medium and/or second fluid media (medium) through the switching of controlling the break valve 11c that is installed in two inlet 11a places respectively.
Usually; The feeding time of first fluid medium and the feeding time of second fluid media (medium) can be 1 to 5 second in each alternation procedure; Realizing the first fluid medium and second fluid media (medium) to the quick impact of the inwall of hollow conductor and realize the quick variation of pressure, thereby more help the inwall that the first fluid medium impacts hollow conductor more tempestuously.Correspondingly, in the purging system of hollow conductor of the present invention, in each alternation procedure, it is 1 to 5 second that first-class body source provides the time of first fluid medium, and it also is 1 to 5 second that second fluid source provides the time of second fluid media (medium).
In the blowing method of hollow conductor of the present invention, the first fluid medium promptly can be that gas also can be liquid, and same, second fluid media (medium) promptly can be that gas also can be liquid.Preferably, said first fluid medium is a liquid, and second fluid media (medium) is a gas.The first fluid density of medium is greater than second fluid media (medium); And; Second fluid media (medium) is difficult to be dissolved in a short period of time the first fluid medium; Therefore, second fluid media (medium) can produce bigger motive force to the first fluid medium, thereby makes the first fluid medium produce greater impact power to the inwall of hollow conductor.
Preferably, second fluid media (medium) is at normal temperatures and pressures, and the solubility in the first fluid medium is less than the gas of 0.1g/L.Thereby, can produce impetus preferably to the first fluid medium.
Usually, in order to practice thrift cost, said liquid can be water.Second fluid media (medium) can be air or other be insoluble in the gas of water (be under the normal temperature and pressure in water solubility less than 0.1g/L), for example nitrogen.In the production scene, the most frequently used gases at high pressure are nitrogen.
Therefore; The above-mentioned first-class body source with first predetermined pressure that provides can comprise the giant that arrives commonly used in the industry; Through giant water is fed in the hollow conductor; Nitrogen is fed in the hollow conductor elevated pressure nitrogen gas tank that arrives commonly used in the industry and provide second fluid source to comprise with second predetermined pressure.
The feeding first fluid medium that in hollow conductor, replaces and second fluid media (medium); Attached to the most of foreign matter on the hollow conductor inwall (for example; Greater than the foreign matter total amount 90%) come off after, can feed water to inner the continuing of hollow conductor, thereby the foreign matter that will come off is gone out hollow conductor.
The present invention is through feeding the fluid media (medium) with different pressures in hollow conductor, thereby can produce bigger impulsive force at the inwall of hollow conductor, and then more effectively knows the foreign matter on the inwall of hollow conductor.
More than combine accompanying drawing to describe preferred implementation of the present invention in detail; But; The present invention is not limited to the detail in the above-mentioned execution mode; In technical conceive scope of the present invention, can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Need to prove that in addition each the concrete technical characterictic described in above-mentioned embodiment under reconcilable situation, can make up through any suitable manner.For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible compound modes.
In addition, also can carry out combination in any between the various execution mode of the present invention, as long as it is without prejudice to thought of the present invention, it should be regarded as the disclosed content of the present invention equally.