CN2145648Y

CN2145648Y - Centric formula turbine expansion pipe coater

Info

Publication number: CN2145648Y
Application number: CN 92201131
Authority: CN
Inventors: 张春智
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-01-18
Filing date: 1992-01-18
Publication date: 1993-11-10
Anticipated expiration: 2002-01-18

Abstract

The utility model discloses an anticorrosion epoxy powder spraying and coating device for a steel pipe, which is suitable for spraying and coating anticorrosion epoxy powder outside a steel pipe. The utility model is a combined body which is composed of a centripetal turbine expansion sprayer and an annular sprayer. An expansion nozzle is arranged on the inner circular radius of the device, and an outlet of the device is provided with a squirrel cage type turbine vane cascade wheel; a centripetal vane wheel and a turbine vane cascade body are arranged on the wheel hub on the end of the device, and the centripetal vane wheel and the turbine vane cascade body synchronously rotate. The inner diameter of a flow passage of the annular sprayer is provided with two rows of spray orifices, and an annular partition board is welded among the spray orifices to form two spray zones. The air and the powder separately enter two mixers through branch pipes, then pass through vane cascades and the vane wheel through the flow passage via the nozzle to fly to a pipe face.

Description

Centric formula turbine expansion pipe coater

The utility model relates to the outer corrosion-resistant epoxy powder spray equipment of a kind of steel pipe, and it is applicable to the outer epoxy powder electrostatic spraying in anticorrosion of the steel pipe of plurality of specifications.

The employed steel pipe of process pipe of construction aspects such as oil field, chemical industry, urban construction is outer anticorrosion now, basically still with traditional pitch prill method.Antiseptic effect through evidence epoxy powder is better than other coating.The anticorrosion beginning of present domestic epoxy powder tried out in the oil field, but because epoxy powder is anticorrosion in the pipe coating of various different-diameters, technology requires high, and difficulty is big, does not also have desirable spraying equipment at present.The screw tube of different size particularly because the influence of surface weld uses general spraying equipment to spray, leak source often occurs, does not so not only play the corrosion-resistant purpose, and to produce local accelerated corrosion serious because of leak source on the contrary, causes pipeline to bore a hole.

The purpose of this utility model provides a kind of outer corrosion-resistant epoxy powder electrostatic spraying apparatus of steel pipe that is used for different size, and it has by different in width, and the ring-like zone that different angles are sprayed makes the pipeline spraying evenly, eliminates leak source, reaches the corrosion-resistant purpose.

Fig. 1 is coated with pipe device structure collectivity and part sectioned view for inward flow turbine expands.

Fig. 2 is an inward flow turbine expansion-injection device profile.

Fig. 3 is ring-like injector profile

Fig. 4 is coated with pipe device structure partial profile for radial-inward-flow turbine expands.

Fig. 5 is coated with the part sectioned view of the another kind of structure of pipe device for inward flow turbine expands.

Describe realization of the present utility model in detail below in conjunction with accompanying drawing.

The utility model is shown in Fig. 1-5, form impeller body,

bearing group

33 and 36 by two blenders 10 and 11, inward flow turbine expansion-injection device 5, ring-like injector 6, squirrel-cage turbine cascade 30 and inflow wheel 53 with wheel hub 32 and 37, be assembled by bolt 4.Inward flow turbine expansion-injection device 5 is connected as a single entity by bolt 4 with ring-like injector 6.The circumference of wheel hub external diameter is provided with

many group bearings

33 and 36 and makes up with injector 5 and 6, is undertaken freely rotating by bearing.Produce high velocity air impulse leaf grating body by the expanding nozzle group and produce rotation at a high speed, the spraying of powdery row material that atomizes is fused into the protection anticorrosive coat on the pipe face of heating.

Blender 10 of the present utility model and 11 is shown in Fig. 2 and 3, blender 10 and 11 outlet respectively with the

spiral case

27 and 27 of injector 5 and 6 ' the bottom be communicated with and weld and be one, they respectively by feed pipe 20 and 20 ', air inlet pipe 24 and 24 ', blind flange 26 and 26 ', cyclone plate 22 and 22 ', metal shower nozzle 21 and 21 ', high-tension bus-bar 18 and 18 ' form.Feed pipe 20 and 20 ' be insulation tube, its end be fixed on blind flange 26 and 26 ' on, and with turnbuckle 23 and 23 ' reinforce, its outside installation cyclone plate 22 and 22 ', two plastics tube head portions be equipped with respectively a metal shower nozzle 21 and 21 ', shower nozzle 21 and 21 ' be centrifugal annular porous nozzle.High-tension bus-bar 18 and 18 ' pass respectively flange 28 and 28 ', cyclone plate 22 and 22 ' fix with shower nozzle 21 and 21 ' connection.

Inward flow turbine expansion-injection device of the present utility model is made up of

annular side plate

40 and 41, outer girth sheets 28, a plurality of expanding nozzle group 29 shown in Fig. 2 and 4.

Annular side plate

40,41 and outer ring 28 welderings are formed volute body 27 for one, and the outlet of a plurality of radial inflow expanding nozzles 29 of design, nozzle matches with squirrel-cage leaf grating 30 on the internal diameter circumference of volute body 27.

Ring-like injector 6 of the present utility model is by outer girth sheets 43, interior girth sheets 46,

annular side plate

47 and 48, is divided into two zones by ring-like dividing plate 50 shown in Fig. 3 and 4, is made up of a plurality of gardens shape diffusion type nozzle 44 and 45.50 welderings of outer girth sheets 43, interior girth sheets 46,

annular side plate

47 and 48, ring-like dividing plate for one composition volute body 27 ', the a plurality of gardens of design two rows shape

diffusion type nozzle

44 and 45 on the internal diameter circumference of volute body 27, be welded with ring-like dividing plate 50 between two row's nozzles, the outlet of interior row's nozzle 44 and inflow wheel 53 match.

Squirrel-cage turbine cascade 30 of the present utility model and inflow wheel 53 and wheel hub 32 and 37 are shown in Fig. 1-5, and by squirrel-cage turbine cascade 30, blade 31, wheel hub 32 and 37, impeller 53, blade 52 are formed.Squirrel-cage turbine cascade 30 and inflow wheel 53 are impeller, leaf grating body with wheel hub 32 and 37 respectively, a plurality of arc shaped blades 31 are housed on the squirrel-cage turbine cascade 30, a plurality of parabolic type blades 52 are housed on the inflow wheel 53, and blade 31 is different with the orientation of blade 52.Considering processing and easy for installation, can also be as shown in Figure 5 with squirrel-cage turbine cascade 30, inflow wheel 53 and hub design, and an end of wheel hub 32 is a squirrel-cage leaf grating 30, and the other end is the structure of inflow wheel 53.

The utility model compared with prior art, the advantage that has:

1, because the utility model has adopted structures such as inward flow turbine expansion-injection device 5, ring-like injector 6 and squirrel-cage turbine cascade 30, inflow wheel 53, simultaneously can carry out the spraying of three kinds of different angles, make spraying evenly, eliminated leak source, solve the outer spraying problem of screw tube and slight corrosion steel pipe, guaranteed coating quality.

2, because the utility model adopts leaf grating, impeller body structure, the batch mixing air-flow that sprays by expanding nozzle acts on the leaf grating impeller body, produces high speed rotating, so do not need steel pipe to rotate in construction, has saved complicated drive apparatus.

Embodiment of the present utility model:

Enforcement of the present utility model, shown in Fig. 1-5, the impeller leaf grating body that the inward flow turbine expansion-injection device 5, ring-like injector 6 and the squirrel-cage turbine cascade 30 as shown in Figure 5 that process and inflow wheel 53 and wheel hub 32 are formed, bearing

group

33 and 36 is added a plurality of bolts 4 of upper insulation plate 8 usefulness fix tightly, impeller leaf grating body can freely be rotated.When spraying application, generally the inward flow turbine expansion is coated with the pipe device and is fixed on and can moves forward and backward, can adjust on the spraying dolly of height.Air supply pipe 1 and supporting two valves 2 thereof and 3 and insulation air supply pipe 9 and 9 ' with inward flow turbine are expanded be coated with the air inlet pipe 24 and 24 ' connection of managing device, again with feeder sleeve 16 and two supporting feed pipe 20 and 20 ' connections of propping up valves 13,15 and 12,14 and two blenders of insulation feeder sleeve thereof, high-tension bus-bar 18 and 18 ' connect with electrostatic generator, through test run all normal after, begin spraying by corrosion-resistant steel pipe 7.When construction, spraying vehicle is moved to the good steel pipe of preheating 7, adjust the position.Steel pipe is passed through from the interior annular space that the inward flow turbine expansion is coated with the pipe device, open steam supply valve 2 and 3 automatically by the photoelectric relay switch, inlet valve 13 and 15 sprays.Under aerodynamic effect, powder, gas enter two blenders 10 and 11 respectively, by nozzle and cyclone plate powder is mixed into and enters in the runner in the gas, the blade of the high velocity air impulse leaf grating wheel that produces by expanding nozzle 29, because the reaction force of blade is far smaller than impulse power, make impeller body produce rotation at a high speed, powder is further atomizing under the centrifugal action of blade, gives to be thrown on the pipe face that is heated and melts.The batch mixing gas and the inflow wheel that are gushed out by ring-like injector 6 inboard row's nozzles 44 meet, and form the oblique angle at change rectilinear motion under the centrifugal action of blade and throw on the pipe face; The batch mixing gas of nozzle 45 ejections of one circle is that straight line is mapped on the pipe face in the outside, and they have formed two ring-types and have sprayed stingy 49 and 51.By above three kinds of different in width, the annular section that different angles are sprayed is sprayed on the outer wall of pipeline powder equably, can eliminate leak source fully, improves coating quality.

Claims

1, a kind of outer corrosion-resistant inward flow turbine of steel pipe that is used for plurality of specifications expands and is coated with the pipe device, it is by feeder sleeve, air supply pipe, shower nozzle, nozzle is formed, it is characterized in that described be coated with the pipe device be by two blenders 10 and 11, inward flow turbine expansion-injection device 5, ring-like injector 6, squirrel-cage turbine cascade 30 and inflow wheel 53 and wheel hub, a plurality of bearing group are assembled, the circumference of wheel hub external diameter is provided with many group bearing group and injector 5 and 6 combinations, and can freely rotate, described blender 10 and 11 outlet respectively with the spiral case 27 and 27 of injector 5 and 6 ' the bottom be connected as a single entity, its feed pipe 20 and 20 ' be insulation tube, its the outside be equipped with cyclone plate 22 and 22 ', the head of two feed pipes be equipped with respectively metal shower nozzle 21 and 21 ', shower nozzle 21 and 21 ' be centrifugal annular porous nozzle, the a plurality of radial inflow expanding nozzles 29 of design on the internal diameter circumference of the volute body 27 of described inward flow turbine expansion-injection device 5, the outlet of nozzle matches with squirrel-cage leaf grating 30, the volute body 27 of described ring-like injector 6 ' the internal diameter circumference on design two row's a plurality of gardens shape diffusion type nozzles 44 and 45, between two row's nozzles, a ring-like dividing plate 50 is arranged, the outlet and the inflow wheel 53 of interior row's nozzle 44 match, described squirrel-cage turbine cascade 30 and inflow wheel 53 are connected as a single entity with wheel hub, a plurality of camber blades 31 are housed on the squirrel-cage turbine cascade 30, a plurality of parabolic type blades 52 are housed on the inflow wheel 53, and blade 31 is different with 52 orientation.

2, inward flow turbine according to claim 1 expands and is coated with the pipe device, it is characterized in that the end that described squirrel-cage turbine cascade 30, inflow wheel 53 and wheel hub can also be designed to wheel hub 32 is a squirrel-cage leaf grating 30, the other end is the structure of inflow wheel, and wheel hub 32 and inward flow turbine expansion-injection device 5, ring-like injector 6 are assembled by many group bearing group.