CN2095044U

CN2095044U - Expending spray with cantrifugal vane for turbine

Info

Publication number: CN2095044U
Application number: CN 91201904
Authority: CN
Inventors: 张春智
Original assignee: Individual
Current assignee: Individual
Priority date: 1991-01-31
Filing date: 1991-01-31
Publication date: 1992-02-05

Abstract

The utility model relates to an expanding sprayer with a centrifugal vane wheel for a turbine, which is an apparatus for anticorrosion spraying in a metal pipe. The utility model is composed of a connecting piece 1, a sprayinh housing 2, an expanding nozzle 3, a turbine vane cascade 4, a turbine vane cascade rotor 5, a double face sealed bearing 6, a centrifugal vane wheel 7 and an electrostatic conveying pipe 3. The utility model has the advantages of simple and compact structure, flexibility, reliability, convenient operation, good dispersibility of coating materials and strong spraying force. The utility model is characterized in that a pipe to be sprayed is immobilized, and the sprayer moves forwards or backwards in the pipe with uniform speed; therefore, the utility model omits the powerful dynamic force and complex equipment making the pipe rotate, reduces the cost and saves the investment. The utility model is suitable for the anticorrosion spraying of a screw thread and rough pipes or pipes with spots, and can be used for repairing ports during the site operation of the pipes.

Description

Expending spray with cantrifugal vane for turbine

The utility model relates to a kind of centrifugal impeller formula turbine expansion jet device that is used for anti-corrosion spray device in the metal tube.

Interior anticorrosion for various metallic conduits, domestic spraying liquid or solid powder commonly used is anticorrosion at present, the fixed porous direct projection structure of the general employing of the injection of this spray equipment, its spraying method is that injector maintains static, the rotation that the pipe that is sprayed need not stop just can make anticorrisive agent uniformly spray on the pipe face.Pipe is rotated, just need bigger power-equipment and control system, need build large-area factory building and big investment.Simultaneously, because injector adopts fixed porous direct projection structure, the coating of ejection is penetrated on tube wall along the certain angle rectilinear direction, the screw thread of pipe, tube wall is uneven or spot is arranged, and coating can't be sprayed onto recess, forms leak source, make pipeline produce severe pitting, the aggravation local corrosion.Application number is 90202186.9 centrifugal turbine expansion-injection device patent, is a kind of new injector, and it needn't just can uniformly spray up coating by turne tube it in spraying process, overcome the fixedly shortcoming of direct projection injector substantially.But, might produce incomplete mixing and make the uneven phenomenon of the coating that is sprayed because coating mixes in injector with power gas.

The purpose of this utility model is on the basis of 90202186.9 patents, and it is better to make a kind of spraying uniformity, and adaptability is more extensive, more can make full use of a kind of new centrifugal impeller formula turbine expansion jet device of power.The coating and the power gas of this kind injector do not mix in injector, the coating of band certain pressure is to rely on the centrifugal impeller of rotation at a high speed to get rid of to be coated onto tube wall, therefore injector not only adapts to the interior anticorrosion of general pipe and container, also be applicable to the on-the-spot repaired mouth of screwed pipe, welded pipe and pipeline, and can spray the liquid or solid powder coating.

Fig. 1 is a structural representation of the present utility model, and it is by connector 1, case of sprayer 2, and expansion nozzle 3, turbine cascade 4, turbine cascade rotor 5, dual face seals bearing 6, centrifugal impeller 7 and defeated material phasmajector 8 are formed.Fig. 2 is the A-A profile of centrifugal impeller formula turbine expansion jet device, expansion nozzle 3 is embedded on the nozzle housing 2, the even expansion nozzle that distributes more than 8 around it, squirrel-cage turbine cascade 4 is enclosed within expansion nozzle outside, and it is mated with turbine cascade rotor 5.Fig. 3 is the B-B profile of centrifugal impeller formula turbine expansion jet device, and centrifugal impeller 7 is installed in the other end of double sealed bearing 6, is synchronized with the movement by screw 10 and turbine cascade 4.The other end of nozzle housing 2 is equipped with the connector 1 of lance tube and shower nozzle, the barral of a gun of centrifugal impeller formula turbine expansion jet device with spray gun can be linked together by it.Static conveying pipeline 8 is that garden pipe is connected with housing 2 upper ends, and endoporus leads directly to centrifugal impeller 7, and coating is from 8 inputs of static conveying pipeline, from receded disk impeller 7 ejections.The effect of static conveying pipeline is to make to be coated with the certain electric charge of strip, can better stick on the tube wall.Power gas enters the inner chamber of nozzle housing 2 from the outer wall of static conveying pipeline 8 and the inner space of connector 1, again from 3 ejections of expansion nozzle.

Power gas enters the inner chamber that sprays housing 2 by the inner space of connector 1 during use, by expansion nozzle 3, produce high velocity air and rush at squirrel-cage turbine cascade 4, make it produce high speed rotating, turbine cascade 4 and leaf grating rotor 5 drive centrifugal impeller 7 and do rotation synchronously together with 4 by dual face seals bearing 6.Coating is by static conveying pipeline 8, enter in the high speed centrifugation impeller 7 of centrifugal impeller 7, under the high speed centrifugation effect of centrifugal impeller 7, be evenly dispersed once more, brute force throws away, coating is the parabolical mode directive tube wall perpendicular to the pipe face, each position of tube wall all can be coated with coat, and effectively raises the spraying corrosion-resistant quality of pipe.Because twice acceleration of centrifugal force of power gas and centrifugal impeller 7, the speed that coating is flown out is fast, and strength is big, makes it under same power, and jet power of the present utility model is considerably beyond the jet power of original injector.

The utility model major advantage is as follows:

1, because the utility model has adopted centrifugal expansion nozzle 3, squirrel-cage turbine cascade 4, dual face seals bearing 6, centrifugal impeller 7, make coating obtain twice acceleration, after coating enters centrifugal impeller 7 by the static conveying pipeline, obtain powerful centrifugal force and quicken, the parabolical jet face that the coating of ejection is perpendicular to the pipe face rushes at tube wall, and it is uniformly dispersed.In addition,, promptly there is not the mixing uneven phenomenon in injector, makes spraying evenly yet because power gas and coating do not mix.

2, since the coating of centrifugal impeller formula turbine expansion jet device ejection perpendicular to tube wall, and jet power is very big, so spray coating equably for screw thread, concavo-convex and spot pocket partly, has enlarged the scope that anticorrosion with painting technology is used.

When 3, centrifugal impeller formula turbine expansion jet device sprays, only in pipe, do straight ahead or setback, just can finish anti-corrosion spray operation to whole pipe, saved former spraying coating process and must make the complex device of pipe rotation and powerful power, simplified technology, saved investment, reduced cost, remarkable in economical benefits.

4, because the utility model does not need pipe to rotate and powerful power in spraying process, injector is small and exquisite flexibly, and is easy and simple to handle, adopts in can constructing in the open air, so be applicable to the repaired mouth operation of long-distance transport pipes.

5, the utility model is simple and compact for structure, and flexibility and reliability is easy and simple to handle, and adaptability is strong.

Description of drawings:

Fig. 1 is a structural representation of the present utility model: 1, and connector; 2, case of sprayer; 3, the expansion nozzle; 4, turbine cascade; 5, the turbine cascade rotor; 6, the dual face seals bearing; 7, centrifugal impeller; 8, the static conveying pipeline; 9, the connector screw; 10, screw; 11, power gas inlet.

Fig. 2 is an A-A profile of the present utility model: 3 expansion nozzles; 4 turbine cascades.

Fig. 3 is a B-B profile of the present utility model.

Embodiment: centrifugal impeller formula turbine expansion jet device is connected on the barral of a gun, puts into the pipe that needs spraying.Adopt the compressed air of 0.2-0.3Mpa, compressed air enters in the case of sprayer 2 from the mouth 11 between the inboard and defeated material phasmajector 8 of barral of a gun, by expansion nozzle 3, the speed that makes compressed gas produce 100-200m/ second rushes at turbine cascade 4, make its rotation, turbine cascade 4 and leaf grating rotor 5 rotate synchronously by the high speed drive receded disk impeller 7 of 3000-8000 rev/min of dual face seals bearing 6 generation, the coating that enters from static conveying pipeline 8, arrive in the centrifugal impeller 7, under the centrifugal action of its high speed rotating, parabolic directive tube wall with swift and violent vertical tube, the spraying operation of whole pipe is finished in the forward travel that 1.5-3m/ by centrifugal impeller formula turbine expansion jet device divides.Coating is uniform and smooth, and is effective.

Claims

1, a kind of centrifugal impeller formula turbine expansion jet device that is used for anti-corrosion spray device in the metal tube, be by connector 1, spray housing 2, expansion nozzle 3, turbine cascade 4, turbine cascade rotor 5, dual face seals bearing 6, centrifugal impeller 7 and static conveying pipeline 8 constitute, it is characterized in that expanding nozzle 3 welding-ons on all bodies in the garden of spraying housing 2,8 the above nozzles that distributing of symmetry on it, squirrel-cage turbine cascade 4 is enclosed within its outside, in an end that sprays housing 2, the connection barral of a gun in hole, band garden 11 and the connector 1 of shower nozzle are arranged, fixing dual face seals bearing 6 at its other end.

2, centrifugal impeller formula turbine expansion jet device according to claim 1 is characterized in that centrifugal impeller is installed in an end of dual face seals bearing 6, and linking together with turbine cascade rotor 5 by screw 10 is synchronized with the movement.

3, centrifugal impeller formula turbine expansion jet device according to claim 1 is characterized in that static conveying pipeline 8 passes through from its center, and is fixed on the bearing block of dual face seals bearing 6, passes straight through to centrifugal impeller 7.