CN211544499U

CN211544499U - Sealing thread protector

Info

Publication number: CN211544499U
Application number: CN202020092948.5U
Authority: CN
Inventors: 谭曙光; 付强; 胡斐; 单邱平
Original assignee: Hunan Aoxin Machinery Co ltd
Current assignee: Hunan Aoxin Machinery Co ltd
Priority date: 2020-01-16
Filing date: 2020-01-16
Publication date: 2020-09-22
Anticipated expiration: 2030-01-16

Abstract

The utility model discloses a sealed thread protector, including shell, inside lining and sealing washer, the shell is one end open-ended semi-closed structure, the inside lining that is equipped with of shell, one side that the shell was kept away from to the inside lining is equipped with the screw thread, the screw thread is serving and is being equipped with the sealing washer being close to the open-ended. The utility model discloses tip at the open end is equipped with the sealing washer, the sealing washer through with the screw thread department interference fit of oil casing to play sealed effect, prevent that water, ash, paint etc. from entering into the screw thread department of oil casing.

Description

Sealing thread protector

Technical Field

The utility model belongs to the technical field of the thread protection technique and specifically relates to a sealed thread protector is related to.

Background

The finished oil casing pipe needs to be provided with threads at two ends of the pipe, so that the petroleum steel pipe is easy to damage the external threads of the pipe end in the transportation process, and a pipe cap, namely a protector, is generally sleeved at the pipe end in order to protect the external threads of the pipe end.

Due to the continuous improvement of customer requirements, when an oil casing enters an oil field warehouse or a use site, the thread is inspected, and then the situation that dust, paint and other impurities enter the thread surface at the tail buckle position of the thread is found, so that on one hand, the thread is difficult to clean, on the other hand, the appearance quality of the thread is influenced, and sometimes more serious situation is that harmful substances enter the thread to cause certain corrosion.

The existing thread protector is generally of a steel-plastic structure, mainly emphasizes the anti-collision performance of a protective sleeve, and has poor performance of preventing water, dust and oil from entering.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: the sealing thread protector overcomes the defects of the prior art, and the gaps between the front end and the rear end of the protector after the protector is screwed with the threads are sealed, so that the sleeve threads are isolated from the surrounding environment and are in a closed environment, the leakage of thread oil is prevented, and the sleeve threads are always protected by the thread oil; meanwhile, the path that sundries such as rainwater and paint or moisture in the air infiltrate into the threads of the sleeve is blocked, and the threads are prevented from being corroded by the rainwater or the moisture in the air and corroded.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a sealed thread protector, includes shell, inside lining and sealing washer, the shell is one end open-ended semi-closed structure, and the inside lining that is equipped with of shell, the one side that the shell was kept away from to the inside lining is equipped with the screw thread, the screw thread is served and is equipped with the sealing washer near open-ended.

Further, the cross section of the sealing ring is triangular.

Furthermore, the sealing ring is made of elastic materials.

Further, the lining is integrally formed.

Furthermore, the inner lining on the side corresponding to the opening side is provided with a bulge facing the opening side.

Further, the shell is made of steel, and the lining is made of plastic.

The utility model has the advantages that:

the utility model discloses tip at the open end is equipped with the sealing washer, the sealing washer through with the screw thread department interference fit of oil casing to play sealed effect, prevent that water, ash, paint etc. from entering into the screw thread department of oil casing.

Drawings

FIG. 1 is a schematic cross-sectional view of a protector according to the present embodiment;

FIG. 2 is an enlarged view of A in FIG. 1;

fig. 3 is a perspective view of the oil bushing in this embodiment.

In the figure: 1-shell, 2-liner, 3-sealing ring, 4-oil sleeve, 5-external thread, 11-bulge, 12-internal thread and 100-protector.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

Example 1

Referring to FIGS. 1 to 3: the utility model provides a sealed thread protector, includes shell 1 and inside lining 2, shell 1 is one end open-ended semi-enclosed construction, and 1 inside lining 2 that is equipped with of shell, one side that outside shell 1 was kept away from to inside lining 2 is equipped with the screw thread, the screw thread is served and is equipped with sealing washer 3 near open-ended.

In the embodiment, the shell 1 is made of steel, and the lining 2 is made of plastic; the shell 1 made of metal can make the protector 100 not be easily damaged in the carrying process, and the lining 2 can contact with the external thread 5 on the oil casing 4, so that the material for manufacturing the lining 2 is selected to be plastic, and the external thread 5 on the oil casing 4 cannot be damaged.

In this embodiment, the housing 1 is a cylinder with one end open, and the other end corresponding to the open end of the housing 1 is defined as a closed end. Inside being equipped with inside lining 2 at shell 1, being located and being equipped with the screw thread on the inside lining 2 of shell 1 lateral wall, the screw thread of this department is located inside lining 2 and is kept away from shell 1 one side, and with the external screw thread 5 phase-match on the oil casing 4, defines internal thread 12.

At the end of the liner 2 in contact with the closed end is a protrusion 11, which protrusion 11 is cylindrical and faces the open end. The diameter ratio of this arch 11 is 1cm less than the internal diameter of oil jacket pipe 4, is convenient for twist protector 100 into the external screw thread 5 of 4 tip of oil jacket pipe on, inside this arch 11 can enter into 4 pipe diameters of oil jacket pipe, can play a guide effect, avoids protector 100 to twist inclined to one side when, has damaged external screw thread 5.

In this embodiment, the seal ring 3 is formed on the end of the internal thread 12 of the liner 2 near the open end, and the liner, the internal thread, the protrusion and the seal ring are integrally formed. The cross section of the sealing ring 3 is triangular, further, the cross section can be isosceles triangle, the vertex angle points to the inside of the protector 100, and the angle of the base angle is 15-45 degrees, preferably 30 degrees. The cross-sectional structure of the sealing ring 3 is designed according to the shape of the external threads 5, and the bottom angle is 30 degrees, so that the bottom edge of the sealing ring 3 is larger than the distance between the external threads 5, and the last external thread 5 can be protected after the protector 100 is screwed into the oil casing 4; the seal ring 3 having this shape can also play a role of guiding when the protector 100 is rotated. The internal diameter of sealing washer 3 is less than oil casing 4 external diameter 2mm, and sealing washer 3 can be with 5 interference fit of external screw thread on the oil casing 4 to play sealed effect, prevent that water, ash, paint etc. from entering into the screw thread department of oil casing 4.

Example 2

A sealed thread protector of the present embodiment is different from embodiment 1 in that:

in this embodiment, the seal ring and the liner are not integrally formed, but are connected together in other ways. The sealing ring 3 is fixedly connected with the lining 2, and can be adhered by glue. The sealing ring 3 is made of elastic material, and can be specifically made of materials such as silica gel and the like.

The above technical features can be understood and implemented by those skilled in the art through the text description, and therefore, the accompanying drawings are not needed to be described.

Claims

1. A sealed thread protector, characterized by: including shell, inside lining and sealing washer, the shell is one end open-ended semi-enclosed construction, and the inside lining that is equipped with of shell, the one side that the shell was kept away from to the inside lining is equipped with the screw thread, the screw thread is served and is equipped with the sealing washer near open-ended.

2. The sealed thread protector of claim 1, wherein: the section of the sealing ring is triangular.

3. A sealed thread protector according to claim 1 or 2, wherein: the lining is integrally formed.

4. A sealed thread protector according to claim 1 or 2, wherein: the sealing ring is made of elastic materials.

5. The sealed thread protector of claim 1, wherein: the inner liner on the side corresponding to the opening side is provided with a bulge facing the opening side.

6. The sealed thread protector of claim 1, wherein: the shell is made of steel, and the lining is made of plastic.