Double-component powder spraying equipment for coating oil pipe

Abstract

The utility model discloses double-component powder spraying equipment for a coating oil pipe, which relates to the technical field of powder spraying equipment and comprises a spraying gun barrel, the spraying gun barrel comprises a spraying joint, a flour outlet pipe, a bottom powder outlet pipe and a cooling pipe, a centralizer is sleeved on the outer wall of the spraying joint, and at least two pipe supporting pieces are mounted on the inner wall of the spraying joint; the pipe supporting piece comprises an outer ring and inner rings which are coaxially arranged, the outer ring and the inner rings are connected through three connecting plates, the flour outlet pipe is fixedly inserted into the two inner rings, and a flour gun head is installed at the front end of the flour outlet pipe through a gun head base; the bottom powder outlet pipe is installed at the rear end of the spraying connector and arranged on the outer side of the flour outlet pipe in a sleeving mode, and the bottom powder outlet pipe and the flour outlet pipe are coaxially arranged. The outer wall of the flour outlet pipe on the front side of the spraying joint is sleeved with the bottom powder gun head, the cooling pipe is installed at the rear end of the spraying joint and arranged on the outer side of the bottom powder outlet pipe in a sleeving mode, and an annular space between the cooling pipe and the bottom powder outlet pipe is filled with cooling liquid; according to the equipment, two different kinds of powder can be sequentially sprayed in one process, the technological process is simplified, and the machining efficiency is greatly improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder spraying equipment technical field, concretely relates to a double component powder spraying equipment for coating oil pipe. BACKGROUND

[0002] With the oil field well depth gradually deepening, cost control gradually strict, looking for more durable coating oil pipe has become a big trend. For this spraying equipment also needs to update and development.

[0003] A durable coating oil pipe, the flour layer is responsible for the intensity thickness in 150-300 mu m, the bottom flour layer is responsible for the adhesion, and the thickness is 20-40 mu m. Coating oil pipe is currently mainly divided into liquid coating and powder coating, liquid coating mainly is two components and sprays, and powder coating is divided into bottom liquid flour spraying and single layer powder spraying. Since there is no double component powder spraying research and related equipment at present, the spraying of the above oil pipe can only be carried out in two steps, and the process flow is complex, and the processing efficiency is low.

[0004] Therefore, it is urgent to develop a double component powder spraying equipment for coating oil pipe. UTILITY MODEL CONTENT

[0005] The utility model relates to a double component powder spraying equipment for coating oil pipe.

[0006] The utility model discloses a double component powder spraying equipment for coating oil pipe, including spraying gun rod, the spraying gun rod includes spraying connector, flour powder pipe, bottom flour powder pipe and cooling pipe, the spraying connector outer wall is equipped with the centralizer, and its inner wall is installed at least two pipe support spare;The pipe support spare includes the coaxial arrangement of outer ring and inner ring, the outer ring and inner ring are connected through a plurality of connecting plates, the flour powder pipe is fixedly inserted in a plurality of inner rings, and the front end is installed with flour gun head through gun head seat;The bottom flour powder pipe is installed at the rear end of spraying connector, is equipped with the bottom flour powder pipe outside, and they are coaxial arrangement;The bottom flour gun head is equipped on the outer wall of the flour powder pipe of spraying connector front side, and the cooling pipe is installed at the rear end of spraying connector, is equipped with the bottom flour powder pipe outside, and the annulus in them is filled with cooling liquid.

[0007] Preferably, it also includes feeding equipment, the feeding equipment includes walking trolley, two vulcanization boxes of inner venturi pump are installed on the walking trolley, and they are flour vulcanization box and bottom flour vulcanization box respectively;The outlet end of the inner venturi pump in the flour vulcanization box is communicated with the flour powder pipe through the discharge pipe, and the outlet end of the inner venturi pump in the bottom flour vulcanization box is communicated with the bottom flour powder pipe through the discharge pipe.

[0008] Preferably, the cooling pipe comprises a water inlet pipe and a water return pipe coaxially arranged, both of which are installed at the rear end of the spraying connector; the water return pipe is sleeved outside the water inlet pipe, and a plurality of flow holes are formed in the pipe wall of the front end of the water inlet pipe.

[0009] Preferably, the front and rear ends of the inner wall of the spraying connector are respectively provided with a pipe support.

[0010] Preferably, the surface powder gun head and the bottom powder gun head are both conical nozzles.

[0011] Compared with the prior art, the utility model has the following advantages:

[0012] The spraying gun rod of the equipment is a double-layer discharging device, which is novel in structure and easy to use; the equipment can spray two different powders in succession in one process, thereby simplifying the technological process and greatly improving the processing efficiency. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 Fig. 1 is a structural schematic view of the spraying connector;

[0014] Figure 2 Fig. 4 is a structural schematic view of the feeding equipment;

[0015] Figure 3 Fig. 7 is a structural schematic view of the pipe support;

[0016] Figure 4 Fig. 9 is a structural schematic view of the gun head seat;

[0017] Figure 5 Fig. 11 is a structural schematic view of the surface powder gun head;

[0018] Figure 6 Fig. 13 is a structural schematic view of the bottom powder gun head.

[0019] In the drawings: 1, spraying connector, 2, centralizer, 3, pipe support, 301, outer ring, 302, inner ring, 303, connecting plate, 4, surface powder discharging pipe, 5, gun head seat, 6, surface powder gun head, 7, bottom powder discharging pipe, 8, bottom powder gun head, 9, water inlet pipe, 901, flow hole, 10, water return pipe, 11, travelling trolley, 12, surface powder vulcanization box, 13, bottom powder vulcanization box, 14, Venturi pump, 15, discharging pipe. DETAILED DESCRIPTION

[0020] The utility model will be further described below in combination with the drawings and embodiments. Embodiment one

[0021] Reference Figure 1 , Figures 3-6As shown in the figure, the double-component powder spraying device for coating oil pipe comprises a spraying gun rod, the spraying gun rod comprises a spraying joint 1, a surface powder outlet pipe 4, a bottom powder outlet pipe 7 and a cooling pipe, the spraying joint 1 is sleeved with a centralizer 2 on the outer wall, and the inner wall is respectively provided with a pipe support 3 at the front end and the rear end; the pipe support 3 comprises a coaxial outer ring 301 and an inner ring 302, the outer ring 301 and the inner ring 302 are connected through three connecting plates 303, the surface powder outlet pipe 4 is fixedly inserted into the two inner rings 302, and the front end is provided with a surface powder gun head 6 through a gun head seat 5; the bottom powder outlet pipe 7 is arranged at the rear end of the spraying joint 1, is sleeved outside the surface powder outlet pipe 4 and is coaxially arranged with the surface powder outlet pipe 4; the surface powder outlet pipe 4 is sleeved with a bottom powder gun head 8 on the outer wall of the front side of the spraying joint 1, the cooling pipe is arranged at the rear end of the spraying joint 1, is sleeved outside the bottom powder outlet pipe 7 and is filled with cooling liquid in the annulus.

[0022] More specifically, the surface powder gun head 6 and the bottom powder gun head 8 are both conical nozzles, and the two nozzles atomize the powder, so that the powder can be diffused into a conical surface.

[0023] In use, the spraying gun rod is moved forward to pass through the oil pipe, and then the powder spraying is started when the spraying gun rod is moved backward; the bottom layer powder flows out through the annulus of the bottom powder outlet pipe 7 and the surface powder outlet pipe 4, the annulus of the spraying joint 1 and the surface powder outlet pipe 4, the bottom powder gun head 8 atomizes the bottom layer powder and sprays the bottom layer powder onto the inner wall of the oil pipe; then the surface layer powder flows out through the inner cavity of the surface powder outlet pipe 4, the surface powder gun head 6 atomizes the surface layer powder and sprays the surface layer powder onto the bottom layer powder coating. At the same time of spraying, the cooling liquid cools the gun rod.

[0024] The spraying gun rod of the device is a double-layer discharging device, which is novel in structure and easy to use; the device can spray two different powders in one process, thereby simplifying the process flow and greatly improving the processing efficiency. Embodiment two

[0025] As a preferred embodiment of the utility model, the embodiment adds a feeding device on the basis of the embodiment one, and specifically comprises:

[0026] Referring to Figure 2 As shown in the figure, the device further comprises a feeding device, and the feeding device comprises a walking trolley 11, the walking trolley 11 is provided with two vulcanization boxes in which Venturi pumps 14 are arranged, namely a surface powder vulcanization box 12 and a bottom powder vulcanization box 13; the outlet end of the Venturi pump 14 in the surface powder vulcanization box 12 is communicated with the surface powder outlet pipe 4 through a discharging pipe 15, and the outlet end of the Venturi pump 14 in the bottom powder vulcanization box 13 is communicated with the bottom powder outlet pipe 7 through a discharging pipe 15.

[0027] The vulcanization box makes the material in the box into a vulcanization state, and the material is discharged by using the Venturi pump 14. Embodiment three

[0028] As a preferred embodiment of the utility model, the embodiment is different from the embodiment one in that the cooling pipe is specific as follows:

[0029] The cooling pipe of the embodiment comprises a water inlet pipe 9 and a water return pipe 10 coaxially arranged, and the front ends of the two are mounted at the rear end of the spraying joint 1; the water return pipe 10 is sleeved outside the water inlet pipe 9, and a plurality of flow holes 901 are formed on the front end pipe wall of the water inlet pipe 9.

[0030] In use, the cooling liquid flows through the annulus of the water inlet pipe 9 and the bottom powder outlet pipe 7, the flow holes 901, the annulus of the water return pipe 10 and the water inlet pipe 9 in sequence, so as to take away the heat to cool the gun barrel.

[0031] The utility model is not limited to the above-mentioned implementation manners, and various changes can be made within the knowledge range possessed by the person skilled in the art without departing from the purpose of the utility model, and the changed content still belongs to the protection range of the utility model.

Claims

1. A two-component powder spray apparatus for coating oil country tubular goods comprising a spray gun barrel, characterized by: The spraying gun rod comprises a spraying joint, a flour discharging pipe, a base powder discharging pipe and a cooling pipe, a centralizer is sleeved on the outer wall of the spraying joint, and at least two pipe supports are installed on the inner wall of the spraying joint; the pipe support comprises coaxially arranged outer and inner rings, the outer and inner rings are connected through a plurality of connecting plates, the flour discharging pipe is fixedly inserted in the plurality of inner rings, and a flour gun head is installed on the front end of the flour discharging pipe through a gun head seat; the base powder discharging pipe is installed at the rear end of the spraying joint, is sleeved outside the flour discharging pipe, and is coaxially arranged with the flour discharging pipe; a base powder gun head is sleeved on the outer wall of the flour discharging pipe at the front side of the spraying joint, the cooling pipe is installed at the rear end of the spraying joint, is sleeved outside the base powder discharging pipe, and the annular space of the cooling pipe is filled with cooling liquid.

2. A dual component powder spray system for coating oil country tubular goods as defined in claim 1, wherein: The feeding device comprises a walking trolley, two vulcanization boxes with built-in Venturi pumps are installed on the walking trolley, and the two vulcanization boxes are a flour vulcanization box and a base powder vulcanization box; the outlet end of the Venturi pump in the flour vulcanization box is communicated with the flour discharging pipe through a discharging pipe, and the outlet end of the Venturi pump in the base powder vulcanization box is communicated with the base powder discharging pipe through a discharging pipe.

3. A dual component powder spray system for coating oil country tubular goods as defined in claim 1, wherein: The cooling pipe comprises coaxially arranged water inlet and return pipes, and the front ends of the two pipes are installed at the rear end of the spraying joint; the return pipe is sleeved outside the water inlet pipe, and a plurality of flow holes are formed in the pipe wall of the front end of the water inlet pipe.

4. The dual component powder spray apparatus for coating oil country tubular goods of claim 1, wherein: One pipe support is installed on the front and rear ends of the inner wall of the spraying joint.

5. The dual component powder spray apparatus for coating oil country tubular goods of claim 1, wherein: The flour gun head and the base powder gun head are both conical nozzles.

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