CN1092859A

CN1092859A - Sprinkler with flexible joint nozzle

Info

Publication number: CN1092859A
Application number: CN 93112742
Authority: CN
Inventors: 保罗·费斯特里唐
Original assignee: Peinemann Equipment BV
Current assignee: Peinemann Equipment BV
Priority date: 1993-12-16
Filing date: 1993-12-16
Publication date: 1994-09-28
Anticipated expiration: 2013-12-16
Also published as: CN1050898C

Abstract

The present invention relates to a kind of water injector, comprise a support, be installed in rotation on reel on the support, at least one be positioned at flexible pipe on the reel, have a passage and be used for sealing cover be positioned at the flexible pipe on the reel closure means, be used for high pressure liquid source is connected to flexible pipe link to each other with the reel jockey of end and the drive unit that is used for ordering about the reel rotation.Closure means comprises flexible piece and its guide mechanism for no reason, the lead flexible piece from a side of passage along one around and the path of the reel that reclining to the passage opposite side, and get back to a described side of passage in opposite direction from leaving reel one segment distance therefrom.

Description

Sprinkler with flexible joint nozzle

The present invention relates to a kind of water injector, such as the water injector of the tube bank that is used for cleaning heat exchanger.

A kind of this known class sprinkler is provided by the applicant commercial, and it is called " heat transfer tube bundle cleaning machine (HBC) ".Adopt this device, some flexible pipes that are wound on the reel and be connected to the water source are inserted in some pipes of tube bank, the incrustation spray pine that exists in it.With method of driving reel is untied, thereby forced draught pushes flexible pipe in the pipe.

The flexible pipe is here covered on the reel by closure means, and the parallel installation with reel that is some of the form of closure means and its surface abut against the roller of the flexible pipe on the reel.Because flexible pipe is to push in the pipe rather than as common employing the in the past with forced draught, pipe is drawn in flexible pipe in the hole backward of the nozzle by being positioned at its place, end, so can utilize the water that charges into high pressure efficiently.Therefore, this known devices can be worked sooner and better than this class device known to the past.

Have that the device of feature is further improvement in the claim 1.Because the closure means of flexible piece form is moved with reel for no reason, on flexible pipe, do not produce frictional force.Thereby improve the life-span of flexible pipe greatly.And when suitably guide mechanism being housed, the total frictional force during reel rotates is very little, so driving mechanism only needs very little power.

Preferable is the step that adopts in the claim 2.The flange here just looks like to be the fixing structure of flexible piece, and like this, the interval height between mandrel surface and the flexible piece just can keep constant.Thereby can accurately control the tensioning state of flexible piece.

A kind of feature of preferred embodiment is described in the claim 3.Adopt this embodiment, flexible piece is laterally having bigger rigidity, but still is being flexible fully vertically.

In the further improvement of claim 4, flexible piece has extraordinary guiding.

By adopting the step in the claim 5, because the frictional force that the flexible piece motion is produced can all absorb by these additional driving mechanisms, like this, the driving that produces the reel of jet pipe motive force is not subjected to that possible friction power influences in the flexible piece guiding.

In below in conjunction with the description of accompanying drawing to several embodiment, further feature and advantage of the present invention will become clearer.

The schematic perspective view that Fig. 1 cuts open for the part of first embodiment of apparatus of the present invention.

Fig. 2 is the view corresponding to a preferred embodiment of device shown in Figure 1.

Fig. 3 is the view that the reel of Fig. 2 device is partly cut open.

Water injector 1 shown in Figure 1 comprises that one is installed in the reel 3 in the support 2, is wound with a high-pressure hose 4 on it at least.In this embodiment, three flexible pipes are together on reel 3.

Support 2 is installed in the body frame (not shown) and can be along horizontal slip.Rod member 6,7 is fixedly attached to body frame, is combined with the lateral steering spare and the propelling sheave 8 of support 2 on it respectively.By rotating the screw mandrel 23 match with the thread bush that is fixedly connected on support 2, make supporting band with reel with respect to the body frame lateral displacement.

Drive reel 3 with a drive unit 12 rotations, drive unit 12 is such as comprising that one surges or air motor.The transmission mechanism of drive unit 12 and screw mandrel 23 is coupling connection (further showing among the figure) mutually, and when reel turned over a complete circle, the distance that entire bracket 2 moves past to the next door equaled three width that adjacent flexible pipe is occupied on the reel 3.Thereby flexible pipe is untied and is remained on respect to body frame on horizontal same position around the position to reel from reel.

One vertical guide member 9 of passing of guiding flexible pipe places flexible pipe to untie and around the front, position to reel from reel.Regulate distance that vertical guide member 9 makes its outlet corresponding to the mutual spacing of pipes 11 in the tube bank 10 to be cleaned from.When reel 3 is untied, the jet pipe that flexible pipe 4 is constituted pushes pipe 11 by vertical guide member 9 like this.The flexible pipe other end is connected with the axle of reel 3 in a manner known way, and a high pressure water-filling device connects so far spool.Water under high pressure outwards sprays at the jet pipe front end, and like this, when these jet pipes were inserted pipe 11, the incrustation in the pipe just can be dashed pine and wash away.

In device 1, jet pipe is forced to pressure and pushes pipe 11, and forced draught is then produced by the rotation of drive unit 12.Because the liquid that applied under pressure of a part does not resemble in known technology in nozzle channel arrangement backward, so whole energy of pressure fluid can be used to hydro-peening pipe 11.

Therefore during operation, flexible pipe is subjected to pressure longitudinally.This pressure can be lifted away from flexible pipe reel 3.In order to prevent this phenomenon, be furnished with closure means, according to the present invention, its form is one to be the no extremity piece 13 of endless band form, it is positioned on the reel 3 and covers most of periphery.Only the part periphery between two deflector rolls 14 and 15 is vacated by endless band 13 and is constituted passage 16.

Like this, endless band 13 just the guide member 14 from the passage 16 of winding reel 3 direct into guide member 15 under the passage 16, from returning guide member 14 around being arranged in guide member 17,18 in the support and 19 guide member 15.Therefore, on the path of guide member 15,17,18 and 19, endless band 13 uncoiling tube 3 one segment distances that stretch, and move along the direction opposite with mandrel surface.

Guide member 14,15,17,18 and 19 is made of the roller that is installed in the support 2, thereby the frictional resistance that produces is less.

Endless band 13 is by cylinder body 20 tensionings that are connected to roller 19, and cylinder body 20 can be hydraulic cylinder or pneumatic cylinder and adjustable in pressure, and like this, the tension force of endless band 13 can be set to a required predetermined value and remain unchanged.Like this, with flexible pipe 4 on reel 3 or when reel 3 is untied, between flexible pipe 4, reel 3 and flexible piece 13, all do not have relative motion, especially between flexible pipe 4 surfaces and flexible piece 13, do not have relative motion, so just guaranteed that flexible pipe is not frayed to a great extent.

As shown in Figure 1, flexible piece 13 can be a belt of using any materials such as reinforced plastics or stainless steel to make.Belt 13 also can be the cingulum that has of suitable mode.Then this roller that is 14,15,17,18 and 19 is rollers that cingulum is arranged.The smooth surface that cingulum arranged is then outwards and towards reel.

Fig. 2 has shown another embodiment of flexible piece, and wherein flexible piece 36 is made of two

chains

38,39 that are provided with rod member 40 therebetween.These rod members match with the chain link of

chain

38,39 rotationally.

Also install 30 situation as shown in Figure 2, reel 32 is installed in the support 31, and support 31 can laterally move in this way.The axle of reel 32 33 is hollow form, and it comprises and be used for the filling to passage of pressure fluid that pressure fluid is supplied in this passage by coupling 34.The end that is connected to the flexible pipe 37 of reel links to each other with the passage in connector 35 and the axle 33.

Flexible piece 36 is with the mode similar to device shown in Figure 1 guiding in device 30.Here,

guide member

42,43,44,45 and 46 has been determined the pulling path of flexible piece.Because flexible piece 36 is made of

chain

38,39 and rod member 40, advantageously these guide members can comprise sprocket wheel, and it can guarantee accurately to guide whole flexible piece with minimal friction forces.Flexible piece 36 is remained under the correct tension state by guide member 45, and guide member 45 can slide transverse to its turning cylinder in the slit in the support 31 50.Screw mandrel 47 is engaged on the end of guide member 45, and screw mandrel 47 was inserted the supporting member 49 of support 31, is combined with wheel 48 on it.By screwing wheel 48, be pulled away from reel with regard to guide member 45, thus the tensioning flexible piece.

Reel 32 has flange, and in this embodiment, flange is provided with rod member 40 for flexible piece 36 and rests against wherein pit.Thereby rod member can determine accurately that with respect to the position of reel 32 like this, the space of sealing cover flexible pipe 37 has accurately been determined similarly.Flange also can be that a sprocket wheel rather than rod member 40 embeds in the illustrated pit, it is characterized in that at this

moment chain

38,39 walk around these flanges.

In device 30, also be useful on the other driving mechanism of flexible piece, the motor 51 of its form for matching with guide member 43.This motor can be hydraulic motor or air motor, and can be used for absorbing the frictional force in the flexible piece motion specially.

Perhaps, motor 51 also can be configured for the main driving machine structure of whole device.By the motion of CD-ROM drive motor 51, then flexible piece 36 is driven, and is engaged on the interior reel 36 that drives of flange of reel 32 owing to rod member.Certainly, here also thus transmission mechanism carry out lateral adjustments.Here be fixedly mounted in the body frame with the screw mandrel 23 corresponding screw mandrels 52 among Fig. 1, and sprocket wheel is installed on the support 31, sprocket wheel is meshed with

chain

38,39 and to order about a screw thread lift-over that is engaged on the screw mandrel 52 moving.The number of pitch by suitable calculating screw mandrel 52 and intersecting chain wheel sprocket, in the above described manner, transverse movement can with the complete driving coupling that rotatablely moves.

Be specifically designed to the sprinkler that clean tube bank although the present invention is described as here, it also can be used for other device, in these devices, one or more flexible pipe on reel, and with one or another kind of mode longitudinally applied pressure must sealing cover on this reel.In the structure that obtains according to this invention, the wearing and tearing minimum that flexible pipe is subjected to, and be used on the hand-line reel or the frictional force minimum that is subjected to of the driving force of untiing.

Claims

1, a kind of water injector, comprise a support, one is rotatably installed in the reel on the support, at least one flexible pipe that is arranged on the reel, being used for sealing cover is positioned at flexible pipe on the reel, and the closure means that a passage is arranged, be used for jockey that high pressure liquid source is linked to each other with the hose end that is connected to reel, and the drive unit that is used for ordering about the reel rotation, it is characterized in that, closure means comprises flexible piece and its guide mechanism for no reason, thus the guiding flexible piece from a side of passage along around and the path of the reel that reclining to the opposite side of passage, and get back to a side of passage in opposite direction from leaving reel one segment distance therefrom.

2, water injector as claimed in claim 1 is characterized in that, reel comprises flange, and the diameter of its neighboring is substantially identical with the neighboring of flexible pipe on reel, and flexible piece is positioned on the flange.

3, as the described water injector of above-mentioned arbitrary claim, it is characterized in that, for no reason flexible piece by two chains that keep at a certain distance away and be parallel to each other with and the end therewith the rod member that connects of chain combine.

4, water injector as claimed in claim 3 is characterized in that, guide mechanism comprises and the coefficient sprocket wheel of chain.

As the described water injector of above-mentioned arbitrary claim, it is characterized in that 5, it comprises the other drive unit that joins on the flexible piece.

6, as the described water injector of above-mentioned arbitrary claim, it is characterized in that, guide mechanism comprises that some are installed in rotation on guiding roller or propelling sheave on the support, and wherein at least one is mounted to and can moves along the direction transverse to its turning cylinder, with the tensioning flexible piece.