Патент USA US2412758код для вставки
Dec. 17, 1946. “ 2,412,758 0. R. SMITH APPARATUS FOR CLEANING PIPE AND THE LIKE Filed Aug. 29, 1944 q ‘IE-Ii? \\ 2 Sheets-Sheet 1 Ba». 17, 1946. Q R, 8mm 2,412,158 APPARATUS FOR CLEANING PIPE AND THE LIKE Filed Aug. 29, 1944 ‘ 2 Sheets-Sheet 2 Patented Dee. 17,_1946 2,412,758 UNITED STATES PATENT OFFICE Oliver R. Smith, Fort Worth, Tex. Application August 29, 1944, Serial No. 551,722 . 2 Claims. (Cl. 263-2) . ‘ 2 1 This invention relates to an, apparatus and method for cleaning pipe and similar round ob Jects. ment of parts and to a novel method, an example of which is given‘in this speci?cation. and illus . trated in the accompanying drawings wherein: The invention herein described is particularly useful in carrying out the method described in Figure 1 shows a side elevation of the appara tus showing the furnace in section. my co-pending application, Serial No. 613,123, - Figure 2 shows a cross, sectional view taken on the line 2—-2 of Figure 1. Figure 3 shows a fragmentary end elevation, partly in section. ?led in United States Patent Oi?ce on August 28, 1945, for a Method for cleaning pipe and sim ilar round objects. . ‘ An object of the invention is to provide a de 10 vice of the character described whereby heat may - be applied to the outer surface of the pipe or other object to be cleaned so as to destroy all foreign matter and ‘corrosive substances from the surface preparatory to applying a protecting coating to the cleansed surface. The apparatus has been specially designed for ‘ use incleaning and reconditioning pipe lines. As is well known pipe lines are periodically raised from beneath the earth surface and cleansed and coated and wrapped and then again‘ buried. At the present time mechanical means are employed for cleaning the surface of the raised pipe pref paratory to reconditioning the same but it is dif ?cult to remove all of the foreign matter from the surface of the pipe by mechanical means, par Figure 4 shows an end view, shown partly broken away. , ‘ ‘ Figure 5 shows a cross, sectional view taken on the line 5-—-! of Figure l; and V Figure 6 shows a sectional view of one of the burner nozzles. Referring now more particularly to the draw it ‘ ings wherein like numerals ofreference designate the same parts in each of the ?gures, the, ,nu merals I and 2 designate the annular frame mem 2.0 bers forming the ends of the frame. These end, members are each formed of two halfround sec tions which are connected together at one side by hinges as I and which may be secured. to_ gether; at the other side, by the removable keys 4 which pass through inter?tting parts of the corresponding sections, as shown in Figure 1. ticularly where the pipe is pitted from corrosion. The upper and lower sections of these end The present invention embodies‘ means and a members are connected by the upper and lower method for more e?‘iciently cleaning the surface , longitudinal bars 5, ii and 0, I which are pref of the pipe for the reception of the coating ma 30 erably formed of angle irons, for strength, as terial. , . shown in Figures 1 and 5. A case like frame is Another object of the invention is to provide thus formed whose sections are hinged on a hori a machine of the character described that is mov zontal axis so that the frame may be readily ap-, able along the pipe during the cleaning process. plied to or removed from the pipe ‘I to be cleansed. It is a further object of the invention to pro 35 The frame is provided with the front and rear vide a cleaning machine of the character de pairs of carrier wheels I, l and I. a which are scribed which is so constructed that it will readily shaped to conform to the contour of the pipe travel around bends in the pipe without interfer- - so as to move there along. ing with the e?icient operation of the machine. The machine may be moved along the pipe A further object of theinvention is ‘to provide 40 manually but as shown there is a platform II apparatus of the character described which will mounted on the frame which supports a motor utilize any available type of fuel for creating the H. Associated with the motor, and driven there— ?ame; or it may be adapted for using an electri by, is a conventional transmission i2, ?xed onto cal type of heat generator. _ shaft there is a sprocket wheel I3. This Another object of the invention is to provide 45 whose sprocket wheel is aligned with a corresponding a pipe cleaning apparatus of the character de wheel ll which is ?xed on the axle on which the scribed which includes also a furnace arranged carrier wheels 9 are also fixed and a suitable adjacent the burners and surrounding the pipe sprocket chain operates over these aligned for more e?iciently applying the heat to the sur sprocket wheels so as to transmit rotation from face of the pipe. 50 the motor to the carrier wheels 8. The invention also comprehends a novel Mounted on the frame are the longitudinal method of cleaning pipe and similar objects. fuel conducting pipes l5 which are spaced apart With the above and other objects in view the the required distance around the frame. These invention has particular relation to certain novel features of construction, operation and arrange 55 pipes l5 extend through deep notches It in the annular frame members I and 2, as more clearly —> 9,418,758 3 4 . ' latch or latches as 84. It may be connected to one of the endid 'embers, as I, by means of a connecting barf-8 which is bolted to said end member I and which may be adiustably con nected to the adjacent end of the oven. The end of the oven adjacent the machine is open and its other end is closed by an inwardly adJusting screws i1 are threaded. The inner extended annular ?ange 38 which extends in ends of these adjusting screws bear against the wardly to the surface of the pipe ‘I, as shown in outer sides of the fuel conducting pipes, as shown ' in Figure 3, all for a purpose to be hereinafter” 10 Figures 1 and 2. At its outer end it ‘is supported on the‘ pipe ‘I by means of the carrier wheels 31 stated. and it should be adjusted relative to the main The ends of the fuel conducting pipes is con frame of the cleaning apparatus so that the adja verge inwardly toward the ‘pipe ‘I and terminate cent nozzles 20 will be located within the end of in arcuate nozzles 20 whose inner sides are per illustrated in Figure 3 and as also shown in Fig ure 4. They are mounted on yieldable seats I'l, preferably coil springs, which are supported on the bottom of said notches and welded to the peripheries of the end members i and 2 opposite said notches are the plates l8 through which the forated, as more accurately shown in Figure 6. is the. oven. v'I'he opposite end of the oven has an outlet ?ue 3,8. The heat will thus be conserved and'the ?ames from the nozzles 20, adjacent the ovenrwill bev drawn inwardly through the oven face of said pipe." They may be adjusted toward around the pipe and will thus more e?lciently and from the pipe ‘I as desired. By screwing the set screws i9 inwardly the nozzles may ‘be ad 20 destroy the foreign matter adhering to the sur face of the pipe to be cleansed. I 4 > -. _ Justedcloserthe surface of the pipe, ‘I and when These nozzles substantially surroundthe pipe to be cleaned and direct the ?ame against the sur ' Various types of fuel may be used such asnat , ural gas, butane, propane,’ kerosene,gasoline or > acetylene when mingled with a suitable ?uid to said set screws ii are screwed outwardly the springs i'I will adjust the nozzles correspondingly outwardly. This is particularly desirable for the reason that when the machine is moving around support combustion. such as compressed air or a bend in the pipe the nozzles on one side might come too close ‘to the pipe or might contact against it and extinguish the ?ames of the cor- - oxygen. . , r , , It is, of course, obvious that electrical heaters might be substituted for the burners illustrated in responding nozzles so contacting with the pipe ‘I'. 4 the accompanying drawings. The numerals 2l,'22 designate circular-mani 30 _ When the foreign matter and corrosive sub stances on the surface of the pipe have been de folds which are arranged within the frame and which‘are anchored thereto by thevupper and r ' stroyed by the flame the products of combustion may be removed from the pipe in any selected lower anchors 23, 23 and 24, 24, as more clearly shown in Figure 5. These manifolds are formed , also in sections which are connected,v at one .side, 35 manner. After the pipe is coated it is then wrapped-in the usual way and then buried. It maybe stated'that‘when the machine is used a at their other‘ends, as also shown‘ in Figure 5. for ‘cleaning pipe not connected into a pipe line _Fuel maybe admitted from a suitable source into ‘ it may be mounted stationary and the pipe run the manifold 2i‘ through the connection 26_ and oxygen or compressed air may be introduced into 40 through the machine rather than the machine being movedalongthe pipe. the manifold 22 through the connection 21. The The drawings and description are illustrative fuel and the oxygen or air will be admitted under } ‘merely and it is contemplated that mechanical suitable pressures. The fuel from the manifold by ?exible connections "and they are ‘closed ' 2| is introduced into the pipes l5 through the conduits 28 and the oxygen or air is admitted from the manifold 22 through the conduits 29 so that a combustible mixture will be su'pplied'to the fuel pipeslB. _ . Each fuel pipe I5 is equipped with suitable changes, and adaptations may be made but the ‘broad principle of the invention is de?ned by the appended-claims. . What'II claim is: , . I ' ' ;1. A cleaning machine comprising a frame shaped to surround a pipe, or the like, a carriage shut-off valves 30, 30,‘ one on each side of the 50 supporting the machine and'movable along the pipe.._ longitudinal fuel pipes on the frame and manifolds, so that the fuel may be directed to spaced apart therearound and terminating at one the set of nozzles at either end of the frame, and end in nozzles which surround the pipe, means may also be equipped with conventional acetylene for adjusting the nozzles radially toward and torch regulators 30a, 30a. , from the pipe and means for supplying a com The machine may be moved along the pipeto bustible fuel to the pipes and nozzles. be cleaned in either of the manners hereinabove 2. A cleaning machine comprising a frame specified and a circular ?ame projected against shaped to surround a pipe or similar object, a the surface of the pipe ‘I all the way around, as carriage supporting the frame on the object being the machine is moved along, at either one or both ends of the machine so that all foreign mat 60 cleaned, fuel conducting pipes supported on the frame and spaced apart around the frame, noz ter and corrosive substances on the surface of the zles at one end of the pipes arranged to surround. pipe will be destroyed preparatory to applying a protecting coating to the cleansed surface. the object‘ to be cleaned andv means for supplying If desired an oven may be associated with the machine. This oven is shown in Figures 1 and 2. fuel to said pipes and to the nozzles, an oven sur-, It is drum-like in form. It is formed of upper and lower half-round sections 3|, 32 which are to one end of'the frame, the end of the oven ad- _' jacent the frame being open and the end of the’ composed of sheet metal suitably lined with as oven remote from the frame being closed‘ and - bestos or similar material. The sections are con provided with an outlet ?ue. nected, at one side, by hinges as 33 and may be 70 secured around the pipe, at the other side,’by a rounding and ‘spaced from the pipe and connected' , OLIVER R. SMITH.