CN111251197A

CN111251197A - Portable sand blasting device for reserved section of inner port of pipeline

Info

Publication number: CN111251197A
Application number: CN202010127266.8A
Authority: CN
Inventors: 徐宏科; 贾东升; 何林
Original assignee: Xi'an Shenlan Intelligent Machine Co Ltd
Current assignee: Xi'an Shenlan Intelligent Machine Co Ltd
Priority date: 2020-02-28
Filing date: 2020-02-28
Publication date: 2020-06-09

Abstract

The invention provides a portable sand blasting device for a reserved section of an inner port of a pipeline, which comprises a material storage and supply part, a sand blasting part, a power part and a sealing part which are connected in sequence; the feeding part comprises a main end plate and an inner end plate, a storage bin and a material pipe are arranged between the main end plate and the inner end plate, the material pipe is connected with the sand blasting part through a small telescopic sheath, and the sand blasting part comprises a sand blasting disc; the other end of the sand throwing disc is connected with a power part, the power part comprises a middle shell, a transmission protective cover is arranged on the end face of the middle shell, a transmission shaft extending out of the transmission protective cover is connected with the sand throwing disc, the other end of the middle shell is connected with a large sheath, the large sheath can stretch out and retract along the central axis direction of a pipeline, the large sheath is connected with a sealing part, the sealing part comprises a hub plate, a check ring is arranged on the outer circle of the hub plate, an air bag is sleeved on the check ring, and a pair of supporting wheel sets is symmetrically arranged on. The device provided by the invention is provided with the steel grit grinding material, the structure is compact, the weight is light, and the surface cleanliness of the processed surface can reach Sa2-Sa2.5 level.

Description

Portable sand blasting device for reserved section of inner port of pipeline

Technical Field

The invention belongs to the technical field of pipeline anticorrosion inner repaired mouths, and particularly relates to a portable sand blasting device for a reserved section of an inner port of a pipeline.

Background

The pipeline is an important medium conveying mode and comprises crude oil, natural gas, drinking water, sewage, chemical raw materials, seawater desalination, seawater beneficiation and the like, a single pipeline is prefabricated in an anticorrosion factory according to a standard anticorrosion process, but when the pipeline is prefabricated, a section (2.25 inches) of anticorrosion paint is reserved on the inner wall of two ports of the pipeline, only weldable paint or antirust paint is coated, the rust return of the reserved section is delayed, the pipeline is transported to a laying site in large quantity for stacking, and therefore the weldable paint or the antirust paint of the reserved section is preferably removed, and then butt welding is carried out.

However, in many concrete projects at home, most of the projects do not process the reserved section of the pipeline, and a small part of the projects are polished by using a handheld electric tool (an angle grinder or a straight grinder) with a wire wheel, but the polished surface of the wire brush can only reach St 3-grade cleanliness, so that the manual operation efficiency is low, and certain dangers exist. It is therefore desirable to create a portable device that can grit blast the reserved section in the field.

Disclosure of Invention

The invention provides a portable sand blasting device for a reserved section of an inner port of a pipeline, which solves the technical problem that the reserved section of the pipeline in the prior art has no special processing device.

In order to achieve the purpose, the technical scheme of the invention is as follows:

the portable sand blasting device for the reserved section of the inner port of the pipeline is characterized by comprising a material storage and supply part, a sand blasting part, a power part and a sealing part which are sequentially connected; the feeding part comprises a main end plate and an inner end plate, the outer circles of the main end plate and the inner end plate are connected with the shell, a storage bin and a material pipe are arranged between the main end plate and the inner end plate, the material pipe is connected with the sand blasting part through a small telescopic sheath, and the sand blasting part comprises a sand blasting disc; the other end of throwing sand dish is connected power portion, power portion includes middle casing, sets up driving system in middle casing, and the terminal surface of middle casing sets up the transmission safety cover, stretches out the transmission shaft in the transmission safety cover and connects the throwing sand dish, and the big sheath is connected to the other end of middle casing, and big sheath can be followed pipeline axis direction and is stretched out and drawn back, and the sealing is connected to big sheath, the sealing includes the wheel hub plate, is installing the retaining ring on the excircle of wheel hub plate, and the gasbag is established to the cover on the retaining ring, and the lower part bilateral symmetry of wheel hub plate sets up a pair of supporting wheel group.

Further, the shell top is equipped with the cang gai, the outside of header plate sets up outer rings and cable conductor.

Furthermore, the hub plate is connected with the rear shell, the rear shell is fixedly provided with a rear end plate, and the top of the rear end plate is provided with an inner hanging ring.

Furthermore, little flexible sheath includes little sheath, and the both ends of little sheath are connected with the sheath ring of throwing sand dish and feed portion respectively through first clamp and second clamp.

Compared with the prior art, the invention has the following beneficial effects:

the device provided by the invention is provided with the steel grit grinding material, and has a compact structure and light weight; the cleaning agent can replace a steel wire brush and can reach the surface cleanliness of Sa2-Sa2.5 level; the operation process is totally closed, so that the abrasive material is prevented from splashing, and the operators can be effectively protected; the recovered abrasive can be reused, and is economical and environment-friendly.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings of the embodiments can be obtained according to the drawings without creative efforts.

FIG. 1 is a schematic illustration of the operation and installation of the present invention.

Fig. 2 is an isometric view of the invention.

Fig. 3 is a schematic view of the operation hoisting of the invention.

In the figure, 1-steel pipe, 2-inner anticorrosive layer, 3-air bag, 4-outer anticorrosive layer, 5-bin cover, 6-outer hanging ring, 7-electric cable, 8-abrasive, 9-bin, 10-material pipe, 11-protective sleeve ring, 12-main end plate, 13-outer shell, 14-inner end plate, 15-small sheath, 16-transmission protective cover, 17-large sheath, 18-supporting wheel set, 19-rear housing, 20-rear end plate, 21-inner hanging ring, 22-middle housing, 23-sand throwing disc, 24-first clamp, 25-second clamp, 26-hub plate and 27-check ring.

Detailed Description

To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

Referring to fig. 1-2, the portable sand blasting device for the reserved section of the inner port of the pipeline comprises a storage material supply part, a sand blasting part, a power part and a sealing part which are connected in sequence; the feeding part comprises a main end plate 12 and an inner end plate 14, the outer circle sides of the main end plate 12 and the inner end plate 14 are connected with a shell 13, a storage bin 9 and a material pipe 10 are installed between the main end plate 12 and the inner end plate 14, the material pipe 10 is connected with the sand blasting part through a small telescopic sheath, and the sand blasting part comprises a sand blasting disc 23; throwing sand disk 23's the other end and connecting power portion, power portion includes middle casing 22, sets up driving system in middle casing 22, and middle casing 22's terminal surface sets up transmission safety cover 16, stretches out transmission shaft connection throwing sand disk 23 in the transmission safety cover 16, and big sheath 17 is connected to middle casing 22's the other end, and big sheath 17 can be followed pipeline axis direction and stretched out and drawn back, and the sealing is connected to big sheath 17, the sealing includes hub plate 26, is installing retaining ring 27 on hub plate 26's the excircle, and the gasbag 3 is established to the cover on retaining ring 27, and the lower part bilateral symmetry of hub plate 26 sets up a pair of support wheelset 18.

The top of the shell 13 is provided with a bin cover 5, and the outer side of the main end plate 12 is provided with an outer hanging ring 6 and a cable 7.

The hub plate 26 is connected with the rear shell 19, the rear shell 19 is fixedly provided with a rear end plate 20, and the top of the rear end plate 20 is provided with an inner hanging ring 21.

The small telescopic sheath comprises a small sheath 15, and two ends of the small sheath 15 are respectively connected with the sand throwing disc 23 and the sheath ring 11 of the feeding part through a first clamp 24 and a second clamp 25.

The working process of the present invention is described below with reference to fig. 1 and 3:

the finished steel grit abrasive is loaded into a bin 9 in advance, the device is lifted to the port of a steel pipe 1 by a crane, the outer surface of the steel pipe 1 is an outer anticorrosive layer 4, a supporting wheel set 18 is supported on the inner wall of the steel pipe 1, a sling on an inner lifting ring 21 is removed, the device is pushed into the steel pipe 1 by an operator, the port of the steel pipe 1 presses the surface of an inner end plate 14, at the moment, a power supply is switched on for inflation, an air bag 3 expands, the surface of an inner anticorrosive layer 2 is pressed, sand is blasted, a sand blasting disc 23 rotates at a high speed, a large sheath 17 drives the sand blasting disc 23 to do linear reciprocating motion along the direction of the central axis of the steel pipe 1, meanwhile, the abrasive 8 enters the sand blasting disc 23 through a material pipe 10, is centrifugally blasted at a high speed, the abrasive is blasted on the surface of a reserved section 28 of the steel pipe 1 at a linear speed of 60-70 m/s, the sand blasting disc, and returning to the original position, the balloon 3 will deflate and contract. After the operation is finished, the operator pulls out the device, hangs the sling on the inner hanging ring 21 and hangs the sling away by using a crane. The abrasive in the end opening of the steel pipe 1 is collected and can be reused. And welding the pipeline ports on two sides to be butt-welded, performing inner joint coating on the circumferential weld by using inner joint coating robot equipment within 8 hours, and performing thickness measurement and electric spark leakage detection by using an inner detection robot, so that the inner corrosion prevention of one circumferential weld is completed.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. The portable sand blasting device for the reserved section of the inner port of the pipeline is characterized by comprising a material storage and supply part, a sand blasting part, a power part and a sealing part which are sequentially connected; the feeding part comprises a main end plate (12) and an inner end plate (14), the outer circle sides of the main end plate (12) and the inner end plate (14) are connected with a shell (13), a storage bin (9) and a material pipe (10) are installed between the main end plate (12) and the inner end plate (14), the material pipe (10) is connected with the sand blasting part through a small telescopic sheath, and the sand blasting part comprises a sand blasting disc (23); the other end of throwing sand dish (23) is connected power portion, power portion includes middle casing (22), sets up driving system in middle casing (22), and the terminal surface of middle casing (22) sets up transmission safety cover (16), stretches out transmission shaft connection throwing sand dish (23) in transmission safety cover (16), and big sheath (17) are connected to the other end of middle casing (22), and big sheath (17) can be followed pipeline axis direction and stretched out and draw back, and the seal is connected in big sheath (17), the seal includes hub plate (26), is installing retaining ring (27) on the excircle of hub plate (26), and gasbag (3) are established to the cover on retaining ring (27), and the lower part bilateral symmetry of hub plate (26) sets up a pair of support wheelset (18).

2. The portable sand blasting device for the reserved section of the port in the pipeline as claimed in claim 1, wherein a cabin cover (5) is arranged on the top of the outer shell (13), and an outer hanging ring (6) and a cable (7) are arranged on the outer side of the main end plate (12).

3. The portable sand blasting device for the reserved section of the inner port of the pipeline as claimed in claim 1 or 2, wherein the hub plate (26) is connected with the rear shell (19), the rear shell (19) is fixedly provided with the rear end plate (20), and the top of the rear end plate (20) is provided with the inner hanging ring (21).

4. The portable sand blasting device for the reserved section of the inner port of the pipeline as claimed in claim 3, wherein the small telescopic sheath comprises a small sheath (15), and two ends of the small sheath (15) are respectively connected with the sand blasting disc (23) and the sheath ring (11) of the feeding part through a first clamp (24) and a second clamp (25).