Steel-plastic structure thread protector for petroleum pipe

Abstract

The utility model discloses a steel-plastic structure thread protector for a petroleum pipe. The steel-plastic structure thread protector comprises a plastic core, an insertion block and a steel shell. An iron shell is arranged on the inner side of the plastic core; the inserting block is arranged on the inner side of the plastic core, and an inserting groove for inserting the inserting block is formed in the iron shell; steel plastic is arranged in the steel shell, a fastening mechanism is arranged at the top of the plastic core, and the plastic core is mounted in the placement groove through a turned edge of the fastening mechanism, so that the iron shell is stably mounted in the plastic core; the iron shell is inserted into the plastic core, the insertion block on the inner side of the plastic core is inserted into the insertion groove in the surface of the iron shell, the iron shell is fixed into the plastic core for the first time, the turned edge on the top of the iron shell is installed in the containing groove in the top of the plastic core, the plastic core can be sealed through the baffle on the surface of the turned edge, and the plastic core is better protected; and when the anti-loosening piece is screwed in, the iron shell can be fixed for the second time, and the plastic core can be further fixed, so that the problem of unshelling of the plastic core is avoided, and the appearance of the plastic core is protected.

Description

Technical Field

[0001] The utility model relates to the technical field of thread protectors, in particular to a steel-plastic structure thread protector for petroleum pipes. Background Art

[0002] Thread protectors are mainly used to prevent damage to pipe threads and pipe heads for oil and natural gas during normal loading and unloading and transportation, to prevent dust and water from penetrating into steel pipe threads during transportation and normal storage, and to help minimize corrosion caused by the intrusion or retention of moist gas.

[0003] At present, most of the traditional thread protectors are connected by nailing to connect the steel and plastic, so that they can be installed (such as CN211309477U, large-caliber steel-plastic combined thread protector); however, nailing will produce extrusion stress on the plastic part, and the fixation is not firm enough, which may cause collision during transportation. In addition, it will cause shelling problems with temperature changes, which will also affect the appearance of the product. In view of this, we launched a steel-plastic structure thread protector for oil pipes. Utility Model Content

[0004] The utility model aims to provide a steel-plastic structure thread protector for petroleum pipes to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a steel-plastic structure thread protector for petroleum pipes, comprising: a plastic core, an insert and a steel shell;

[0006] An iron shell is provided inside the plastic core;

[0007] The plug block is arranged on the inner side of the plastic core, and a slot for inserting the plug block is provided inside the iron shell, and the plug block and the plastic core are integrally formed, and the iron shell and the slot are integrally formed, and the iron shell can be fixed by inserting the plug block into the slot;

[0008] The steel shell is provided with steel plastic inside, and the top of the plastic core is provided with a fastening mechanism, which is installed inside the placement groove through the curling edge of the fastening mechanism, so that the iron shell can be stably installed inside the plastic core.

[0009] Preferably, the fastening mechanism includes a baffle connected to the surface of the curled edge, the baffle and the curled edge are integrally formed, the curled edge is arranged on the top of the iron shell, and the placement groove is opened on the top of the plastic core, and the placement groove and the iron shell are integrally formed, so that the setting of the placement groove can better install the curled edge, thereby allowing the curled edge to be better fixed on the top of the plastic core.

[0010] Preferably, the surface of the plastic core is connected with an anti-loosening piece, which facilitates the fixation of the iron shell and the petroleum pipe.

[0011] Preferably, a support foot is connected to the bottom of the plastic core, and the support foot and the plastic core are integrally formed.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows: the utility model inserts the iron shell into the interior of the plastic core, allows the side of the iron shell to fit tightly against the inner side of the plastic core, and allows the plug on the inner side of the plastic core to be inserted into the slot on the surface of the iron shell, thereby fixing the iron shell inside the plastic core for the first time, and the curled edge on the top of the iron shell will be installed in the placement groove on the top of the plastic core, so that the iron shell can be better installed inside the plastic core, and the baffle on the curled edge surface can seal the plastic core to better protect the plastic core. By screwing in the anti-loosening part, the iron shell can be fixed for the second time, and the plastic core can also be further fixed, thereby avoiding collisions, and further avoiding the problem of shelling of the plastic core, thereby protecting the appearance of the plastic core. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural schematic diagram of the utility model from the first perspective;

[0014] Figure 2 It is a structural schematic diagram of the utility model from a second viewing angle;

[0015] Figure 3 It is a schematic diagram of the structure of the utility model when the steel shell and the steel-plastic are decomposed;

[0016] Figure 4 This is a schematic diagram of the structure of the first embodiment of the utility model when the plastic core and the iron shell are exploded;

[0017] Figure 5 It is a schematic structural diagram of the second embodiment of the utility model when the plastic core and the iron shell are exploded.

[0018] In the figure: 1. Plastic core; 2. Iron shell; 3. Insert block; 4. Placement slot; 5. Curled edge; 6. Baffle; 7. Steel shell; 8. Anti-loosening part; 9. Support foot; 10. Slot; 11. Steel plastic. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] See also Figure 1-5The utility model provides a technical solution: a steel-plastic structure thread protector for petroleum pipes, comprising: a plastic core 1, an iron shell 2 is arranged inside the plastic core 1;

[0021] The plug-in block 3 is arranged on the inner side of the plastic core 1, and a slot 10 for inserting the plug-in block 3 is provided inside the iron shell 2;

[0022] The steel shell 7 has a steel plastic 11 disposed inside the steel shell 7, and a fastening mechanism is disposed on the top of the plastic core 1. The rolled edge 5 of the fastening mechanism is installed inside the placement groove 4 so that the iron shell 2 can be stably installed inside the plastic core 1.

[0023] The fastening mechanism includes a baffle 6 connected to the surface of the curling edge 5, the baffle 6 and the curling edge 5 are integrally formed, the curling edge 5 is arranged on the top of the iron shell 2, and the placement groove 4 is opened on the top of the plastic core 1, and the placement groove 4 and the iron shell 2 are integrally formed, so that the setting of the placement groove 4 can better install the curling edge 5, so that the curling edge 5 can be better fixed on the top of the plastic core 1.

[0024] The surface of the plastic core 1 is connected with an anti-loosening member 8 , which is convenient for fixing the iron shell 2 and the plastic core 1 .

[0025] The bottom of the plastic core 1 is connected with a support leg 9, and the support leg 9 and the plastic core 1 are integrally formed.

[0026] First embodiment: Specifically, when in use, the iron shell 2 is inserted into the interior of the plastic core 1, so that the side of the iron shell 2 is tightly attached to the inner side of the plastic core 1, so that the plug 3 on the inner side of the plastic core 1 is inserted into the slot 10 on the surface of the iron shell 2, so that the iron shell 2 is fixed inside the plastic core 1 for the first time, and the curling edge 5 on the top of the iron shell 2 will be installed in the placement groove 4 on the top of the plastic core 1, so that the iron shell 2 can be better installed inside the plastic core 1, and the baffle 6 on the surface of the curling edge 5 can seal the plastic core 1, so as to better protect the plastic core 1, and then the anti-loosening member 8 is screwed in, and then the iron shell 2 can be fixed for the second time, and the plastic core 1 can also be further fixed to avoid the problem of shelling of the plastic core 1, thereby protecting the appearance of the plastic core 1;

[0027] Second embodiment: insert the iron shell 2 to the outside of the plastic core 1, so that the plug block 3 on the outside of the plastic core 1 is inserted into the slot on the surface of the iron shell 2, thereby fixing the iron shell 2 to the outside of the plastic core 1 for the first time, and the curling edge 5 on the top of the iron shell 2 will enter the placement groove 4 on the top of the plastic core 1, so that the iron shell 2 can be better installed on the plastic core 1, and the baffle 6 on the surface of the curling edge 5 can seal the plastic core 1, so as to better protect the plastic core 1, and then screw in the anti-loosening member 8, and then the iron shell 2 can be fixed for the second time, and the plastic core 1 can also be further fixed;

[0028] The plastic core 1 is composed of a high-strength SPHC steel belt and high-density polyethylene (PE).

[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A steel-plastic structure thread protector for petroleum pipe, characterized in that: include: A plastic core (1), wherein an iron shell (2) is arranged inside the plastic core (1); An insert block (3), the insert block (3) being arranged on the inner side of the plastic core (1), and a slot (10) for inserting the insert block (3) being provided inside the iron shell (2); A steel shell (7) is provided with a steel plastic (11) inside the steel shell (7), and a fastening mechanism is provided on the top of the plastic core (1), and the crimping edge (5) of the fastening mechanism is installed inside the placement groove (4) so ​​that the plastic core (1) is installed inside the plastic core (1).

2. The steel-plastic structure thread protector for petroleum pipe according to claim 1, characterized in that: The fastening mechanism comprises a baffle (6) connected to the surface of a curling edge (5), the curling edge (5) is arranged on the top of the iron shell (2), and the placement groove (4) is opened on the top of the plastic core (1).

3. The steel-plastic structure thread protector for petroleum pipe according to claim 1, characterized in that: The surface of the plastic core (1) is connected with an anti-loosening component (8).

4. The steel-plastic structure thread protector for petroleum pipe according to claim 1, characterized in that: The bottom of the plastic core (1) is connected with a support foot (9).

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