CN102847636B - Self-traveling vehicle for detecting and spraying anti-corrosion layer in pipeline - Google Patents

Abstract

The invention discloses a self-traveling vehicle for detecting and spraying an anti-corrosion layer in a pipeline. The self-traveling vehicle comprises a frame, driving wheels, brake blocks, an electric spark leak detector and a spraying trolley, wherein each driving wheel is arranged at one end of each driving wheel supporting arm through a pin shaft; the middle parts of the driving wheel supporting arms are arranged on a first rotating shaft in a rotatable manner; the other end of each driving wheel supporting arm is connected with a sliding sleeve through a hinge; the driving wheels are connected with a driving device; a brake block is arranged at one end of each brake block supporting arm through a pin shaft; the middle parts of the brake block supporting arms are arranged on a second rotating shaft in a rotatable manner; the other end of each brake block supporting arm is connected with the sliding sleeve through a hinge; the sliding sleeve is sleeved on a hollow shaft in a sliding manner; the hollow shaft is fixedly arranged on the frame; an electric push rod is positioned in the hollow shaft; the movable end of the electric push rod is connected with the sliding sleeve; an electric spark coil is arranged on the frame; an annular guide rail is arranged on one side of the frame; and the spraying trolley is arranged on the annular guide rail in a sliding manner. The self-traveling vehicle has functions of detecting and recovering the anti-corrosion layer in the pipeline.

Description

Self-propelled anti-corrosion layer detection and spraying vehicle in pipelines

technical field

The invention relates to construction equipment in pipelines.

Background technique

The pipelines used for oil and natural gas transportation must be sprayed with anti-corrosion materials, but the damage to the anti-corrosion layer at the mouth of the pipeline on site or due to accidents cannot be repaired.

Contents of the invention

In order to overcome the shortcomings of the existing construction equipment in pipelines that do not have the ability to repair the internal anti-corrosion layer of the pipeline, the present invention provides a self-propelled anti-corrosion layer detection and spraying vehicle in the pipeline that has the function of repairing the internal anti-corrosion layer of the pipeline.

The technical solution adopted by the present invention to solve its technical problems is:

A self-propelled anti-corrosion layer inspection and spraying vehicle in pipelines, including a frame, driving wheels, brake blocks, electric shock coils and a spraying trolley, three driving wheels and three brake blocks are arranged on the frame, radially distributed The three driving wheels and the three brake blocks are all symmetrical about the Y axis, the driving wheels are mounted on one end of the driving wheel support arm through a pin shaft, and the middle part of the driving wheel support arm is rotatably mounted on the first rotary shaft, The first rotary shaft is fixedly installed on the vehicle frame, the other end of the driving wheel support arm is connected to the sliding sleeve through a hinge, and the drive wheel is connected to the driving device; the brake shoe is installed on the brake shoe support arm through a pin One end of the brake shoe support arm, the middle part of the brake shoe support arm is rotatably mounted on the second rotary shaft, and the second rotary shaft is fixedly mounted on the vehicle frame, and the other end of the brake shoe support arm is connected with the sliding sleeve through a hinge ;

The sliding sleeve is slidably fitted on the hollow shaft, the hollow shaft is fixedly mounted on the vehicle frame, the electric push rod is located in the hollow shaft, and the moving end of the electric push rod is linked with the sliding sleeve;

The electric discharge coil is installed on the vehicle frame, an annular guide rail is installed on one side of the vehicle frame, and the spraying trolley is slidably installed on the annular guide rail.

Further, viewed from the axial direction, the included angle between the drive wheel and the brake block is 0°.

Furthermore, the drive device includes a stepper motor and a toothed belt transmission mechanism, the stepper motor is installed on the driving wheel support arm, the output shaft of the stepper motor is equipped with a driving pulley, and the driving pulley It is connected with a driven pulley through a toothed belt, and the driven pulley is installed on the wheel shaft of the driving wheel.

Balance rollers are arranged on the vehicle frame. Seen from the axial direction, the included angles between the balance rollers, the driving wheels and the brake blocks are all 60°.

The spraying trolley includes a carriage, on which a gear is installed, the inner surface of the annular guide rail is in the shape of a rack, the gear is meshed with the rack, and the rotating shaft of the gear is connected to the output shaft of the stepping motor , a guide wheel is installed on the carriage, and a slideway for the guide wheel to slide is provided on the annular guide rail; an electromagnetic ball valve and a spraying hose are installed in the carriage, and the discharge end of the electromagnetic ball valve is connected to the spraying hose. The hose is connected, and the spraying hose is connected with the nozzle; the feed end of the electromagnetic ball valve is connected with the feeding hose, and the feeding hose is connected with the pump, and the pump is installed in the anti-corrosion paint tank. The pump is installed in the anticorrosion paint box.

The beneficial effects of the invention are mainly manifested in that it has the functions of leak detection and repair of the anticorrosion layer inside the pipeline.

Description of drawings

Figure 1 is a structural diagram of a self-propelled anti-corrosion layer detection and spraying vehicle in pipelines.

FIG. 2 is a side view of FIG. 1 .

Figure 3 is a cross-sectional structure diagram of the spraying trolley and the ring guide rail.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

Referring to Figures 1 to 3, a self-propelled anti-corrosion layer inspection and spraying vehicle in a pipeline, as shown in Figure 1, has a cylindrical cage frame 1, a hollow shaft 2 and a sliding sleeve 3 on the outside of the frame, and a transmission And the walking mechanism is symmetrically arranged around the hollow shaft. The vehicle has a power supply battery 7, a controller 6, and an electric spark leak detector, and its electric spark coil 8 is installed on the outside of the vehicle frame in a ring shape, and keeps a small distance between pipelines. The anti-corrosion spraying device is also carried on the car, which mainly includes an anti-corrosion paint box 9, a pump 10, a flexible pipe 11, a spraying trolley 12, and a guide rail 20.

Drive wheel 14 is installed on one end of drive wheel support arm 17 by bearing pin, and drive wheel support arm can rotate around the rotary shaft that is fixed on the vehicle frame, and the other end of support arm is connected with sliding sleeve 3 by hinge, and stepper motor 15 is installed On the driving wheel supporting arm, driven by a synchronous belt transmission mechanism 16, 3 sets of driving wheels and supporting arms thereof are installed on the vehicle frame. The brake block 5 is installed on one end of the brake block support arm 4 through a pin shaft, and the brake block support arm 4 can rotate around the rotary shaft fixed on the vehicle frame, and the other end of the brake block support arm is connected with the sliding sleeve 3 through a hinge, and the vehicle frame 3 sets of brake shoes and their support arms are installed. The radial distribution of each drive wheel and brake block is shown in Figure 2, and the included angle of each drive wheel (brake block) is 120° and is symmetrical about the Y axis.

If the electric push rod 13 fixed on the center frame stretches out to the right, the sliding sleeve 3 is pushed and the wheel support arm is rotated, the driving wheel presses on the pipe wall with the movement of the wheel support arm, and the brake block 5 is disengaged. pipe wall. When the stepper motor rotates 15, it is driven by a synchronous belt mechanism 16, so that the traction vehicle frame 1 walks in the pipeline. When the electric push rod 13 returns, it drives the sliding sleeve 3 to move to the left, and the pulling wheel support arm makes the driving wheel break away from the pipe wall. If sliding sleeve 3 continues to move to the left, brake block 5 is pressed on the pipeline wall along with the motion of brake block support arm 4, and walking device is stopped.

The annular guide rail 20 is installed along the inner side of the vehicle frame, and its cross-sectional structure is shown in Figure 3, which consists of two parts: a rack and an inverted T-shaped guide rail. The structure of the spraying trolley is shown in FIG. 3 . It is installed on the circular guide rail 20 and includes an electromagnetic ball valve 21 , a spray head 23 , a gear 24 , a stepping motor 25 and a guide wheel 26 . Guide wheel 26 is installed in the inverted T-shaped guide rail to ensure that the spraying car can be on the ring guide rail 20, and when the stepping motor 25 rotates, the spraying car just moves along the ring guide rail. When the pump 10 was working and the electromagnetic ball valve 21 was opened, the paint in the anticorrosion paint tank 9 was sprayed out through the flexible pipes 11 and 22, the electromagnetic ball valve 21 and the shower nozzle 23.

When working, the self-propelled anti-corrosion spraying vehicle in the pipeline walks in the pipeline, and the electric spark leak detector loaded on the vehicle is working at the same time. The circular guide rail moves for one week and sprays, and then walks and sprays again. The width of spraying is calculated according to the signal of the electric spark leak detector.

Claims (5)

1. one kind can be detected and spraying vehicle from the pipeline internal corrosion layer of walking, it is characterized in that: described anticorrosive coat detects and spraying vehicle comprises vehicle frame, driving wheel, brake shoes, shocking coil and spraying dolly, described vehicle frame arranges 3 driving wheels and 3 brake shoes, radial distribution is that 3 driving wheels and 3 brake shoes are all symmetrical about Y-axis, driving wheel is arranged on one end of driving wheel support arm by a bearing pin, the middle part of described driving wheel support arm is installed in rotation on the first gyroaxis, described first gyroaxis is fixedly mounted on vehicle frame, the other end of described driving wheel support arm is connected with sliding sleeve by hinge, described driving wheel is connected with drive unit, brake shoes is arranged on one end of brake shoes support arm by a bearing pin, the middle part of described brake shoes support arm is installed in rotation on the second gyroaxis, described second gyroaxis is fixedly mounted on vehicle frame, and the other end of described brake shoes support arm is connected with sliding sleeve by hinge,

Described sliding sleeve is slidably sleeved in hollow shaft, and described hollow shaft is fixedly mounted on vehicle frame, and electric pushrod is positioned at hollow shaft, and the moved end of described electric pushrod and described sliding sleeve link;

Spark coil installed by described vehicle frame, and ring-shaped guide rail is installed in described vehicle frame side, and described spraying dolly is slidably mounted on described ring-shaped guide rail.

2. can detect and spraying vehicle from the pipeline internal corrosion layer of walking as claimed in claim 1, it is characterized in that: from axially, the angle of driving wheel and brake shoes is 0 °.

3. can detect and spraying vehicle from the pipeline internal corrosion layer of walking as claimed in claim 1 or 2, it is characterized in that: described drive unit comprises stepper motor and cog belt transmission mechanism, described stepper motor is arranged on driving wheel support arm, the output shaft of described stepper motor installs driving pulley, described driving pulley is connected with passive belt wheel by cog belt, and described passive belt wheel is arranged on the wheel shaft of described driving wheel.

4. can detect and spraying vehicle from the pipeline internal corrosion layer of walking as claimed in claim 1 or 2, it is characterized in that: balance rollers arranged by described vehicle frame, from axially, the angle between described balance rollers and driving wheel, brake shoes is 60 °.

5. can detect and spraying vehicle from the pipeline internal corrosion layer of walking as claimed in claim 1 or 2, it is characterized in that: described spraying dolly comprises compartment, gear is installed in described compartment, the inner surface of described ring-shaped guide rail is rack-shaped, described gear engages with the inner surface of described ring-shaped guide rail, the rotating shaft of described gear connects with the output shaft of stepper motor, and directive wheel is installed in described compartment, and described ring-shaped guide rail is provided with the slideway slided for described directive wheel; Install Solenoid ball valve and spray hose in described compartment, the discharge end of described Solenoid ball valve is connected with described spray hose, and described spray hose is connected with shower nozzle; The feed end of described Solenoid ball valve is connected with feeding tube, and described feeding tube is connected with pump, and described pump is arranged in anticorrosive paint case, installs described pump in described anticorrosive paint case.