Thread element with corrosion-resistant function

Abstract

The utility model discloses a thread element with a corrosion-resistant function, which comprises a nozzle body and a nozzle core, the nozzle body and the nozzle core are both made of nickel base alloy, the surfaces of the nozzle body and the nozzle core are coated with protective layers, one end of the nozzle body is provided with a first connecting part, and the other end of the nozzle body is provided with a second connecting part. A second connecting part is arranged at the other end of the nozzle body, and a fastener is arranged in the middle of the nozzle body. The nozzle body, the nozzle core and the protective layer are arranged, the nozzle body and the nozzle core are made of nickel base alloy, the nozzle can cope with various corrosive media such as sulfuric acid, chloride and hydrofluoric acid and work conditions of high temperature and high pressure, the nickel base alloy can resist erosion of the corrosive media, the stability of the structure and performance of the nozzle is kept, and the service life of the nozzle is prolonged. And the protective layers arranged outside the nozzle body and the nozzle core have high hardness and high wear resistance, so that damage to the nozzle body and the nozzle core caused by high-speed flushing of fluid in a flow channel can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of threaded elements, in particular to a threaded element with corrosion resistance function. Background Art

[0002] As a threaded component used in the oil field, the nozzle achieves efficient and safe operation through its precise injection function. In terms of oil well production increase, the precise adjustment of the nozzle can achieve precise control of the injection volume and frequency of the self-flowing well, thereby optimizing the oil well production capacity. In water injection, fracturing and other processes, the high-pressure nozzle can ensure that water or fracturing fluid is injected into the formation evenly and efficiently, thereby improving operation efficiency.

[0003] After searching, the patent with the authorization publication number CN212867513U is a hydraulic sandblaster nozzle. By setting threads on the inside of the nozzle core and the nozzle hole, the nozzle core and the nozzle hole can be connected by screwing when they are matched, so that the contact area between the nozzle core and the nozzle hole becomes larger, and the nozzle core and the nozzle are also connected by brazing. Due to the increase in the contact area, the connection strength becomes higher, thereby preventing the nozzle core from loosening or falling off on the nozzle.

[0004] As a key component of sandblasting operation, the performance of hydraulic sandblasting nozzle directly affects the sandblasting effect and the service life of the equipment. However, traditional nozzles often suffer from performance degradation or even damage due to liquid corrosion during use, which brings inconvenience to the operation. Therefore, how to improve the corrosion resistance of the nozzle has become an urgent problem to be solved. Utility Model Content

[0005] The utility model aims to solve the shortcomings in the prior art and proposes a threaded element with corrosion resistance function.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A threaded element with corrosion resistance, comprising a nozzle body and a nozzle core, wherein the nozzle body and the nozzle core are made of nickel-based alloy, and a protective layer is sprayed on the surface of the nozzle body and the nozzle core;

[0008] One end of the nozzle body is set as a first connection part, and the other end of the nozzle body is set as a second connection part. A fastener is set in the middle of the nozzle body, and a flow channel running through the nozzle body is set inside. An internal thread is provided inside the first connection part, and a first external thread matching the internal thread is provided outside the nozzle core. The nozzle core is threadedly connected to the first connection part, and a second external thread is provided outside the second connection part.

[0009] Furthermore, the protective layer is a ceramic coating, and the thickness of the ceramic coating is .mm-mm.

[0010] Furthermore, four glue injection grooves in a ring array are arranged on the outer side of the first connecting portion, and sealant is filled between the glue injection grooves and the nozzle core.

[0011] Furthermore, an annular seat is provided at the bottom end of the first connecting portion, and one end of the nozzle core abuts against the surface of the annular seat.

[0012] Furthermore, the fastener is an external hexagonal nut.

[0013] The beneficial effects of the utility model are:

[0014] 1. The utility model is provided with a nozzle body, a nozzle core and a protective layer. The nozzle body and the nozzle core are made of nickel-based alloy, which can cope with various corrosive media, such as sulfuric acid, chloride, hydrofluoric acid, etc., as well as high temperature and high pressure working conditions. The nickel-based alloy can resist the erosion of these corrosive media and maintain the stability of its structure and performance, thereby ensuring the long-term stable operation of the nozzle body. The protective layer arranged on the outside of the two has high hardness and high wear resistance, which can prevent the fluid from being washed at high speed in the flow channel and causing damage to the nozzle body and the nozzle core.

[0015] 2. The utility model sets a glue injection groove to thread the nozzle core into the first connection part. When the nozzle core contacts the annular seat, the installation is completed. Then, sealant is injected from the glue injection groove to fill the gap between the nozzle core and the first connection part. The first external thread is connected to the internal thread to achieve a better sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a threaded element with corrosion resistance proposed by the utility model;

[0017] Figure 2 A side view schematic diagram of a threaded element with corrosion resistance proposed by the utility model;

[0018] Figure 3 This is a schematic diagram of the nozzle core structure of a threaded element with corrosion resistance proposed by the utility model;

[0019] Figure 4 This is a schematic diagram of the protective layer structure of a threaded element with corrosion resistance proposed by the utility model;

[0020] Figure 5 This is a front view schematic diagram of a threaded element with corrosion resistance proposed by the utility model.

[0021] In the figure: 1. nozzle body; 2. nozzle core; 3. protective layer; 4. first connecting part; 5. second connecting part; 6. fastener; 7. flow channel; 8. internal thread; 9. first external thread; 10. second external thread; 11. glue injection groove; 12. annular seat. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0023] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , a threaded element with corrosion resistance, comprising a nozzle body 1 and a nozzle core 2, the nozzle body 1 and the nozzle core 2 are made of nickel-based alloy, and the surfaces of the nozzle body 1 and the nozzle core 2 are sprayed with a protective layer 3;

[0024] One end of the nozzle body 1 is set as a first connection part 4, and the other end of the nozzle body 1 is set as a second connection part 5, which is connected to an external device by the second connection part 5. A fastener 6 is set in the middle of the nozzle body 1, and a flow channel 7 that runs through from top to bottom is set inside the nozzle body 1. The nozzle body 1 and the nozzle core 2 are made of nickel-based alloy, which can cope with various corrosive media, such as sulfuric acid, chloride, hydrofluoric acid, etc., as well as high temperature and high pressure working conditions. The nickel-based alloy can resist the erosion of these corrosive media and maintain the stability of its structure and performance, thereby ensuring the long-term stable operation of the nozzle body 1. The protective layer 3 arranged on the outside of the two has high hardness and high wear resistance, which can prevent the fluid from being washed at high speed in the flow channel 7 and causing damage to the nozzle body 1 and the nozzle core 2. An internal thread 8 is opened inside the first connection part 4, and a first external thread 9 matching the internal thread 8 is arranged outside the nozzle core 2. The nozzle core 2 is threadedly connected to the first connection part 4, and a second external thread 10 is arranged outside the second connection part 5.

[0025] Reference Figure 4 , the utility model, specifically: the protective layer 3 is a ceramic coating, and the thickness of the ceramic coating is 1.5mm-2mm.

[0026] Reference Figure 1 , Figure 3 The utility model is specifically: four glue injection grooves 11 in a ring array are arranged on the outside of the first connecting part 4, and the space between the glue injection groove 11 and the nozzle core 2 is filled with sealant. The sealant is injected from the glue injection groove 11, and the sealant can fill the gap between the nozzle core 2 and the first connecting part 4. The first external thread 9 is connected with the internal thread 8, and the sealing effect is better.

[0027] Reference Figure 1 , Figure 3 , Figure 5 The utility model is specifically: an annular seat 12 is provided at the bottom end of the first connecting part 4, one end of the nozzle core 2 abuts against the surface of the annular seat 12, and the nozzle core 2 is threadedly connected to the first connecting part 4. When the nozzle core 2 contacts the annular seat 12, the installation is completed.

[0028] Reference Figure 1 , the utility model, specifically: the fastener 6 is an external hexagonal nut, and the fastener 6 can facilitate the installation and removal of the nozzle body 1 by a wrench.

[0029] Working principle: The nozzle body 1 and the nozzle core 2 are made of nickel-based alloy, which can cope with various corrosive media, such as sulfuric acid, chloride, hydrofluoric acid, etc., as well as high temperature and high pressure working conditions. The nickel-based alloy can resist the erosion of these corrosive media and maintain the stability of its structure and performance, thereby ensuring the long-term stable operation of the nozzle body 1. The protective layer 3 arranged on the outside of the two has high hardness and high wear resistance, which can prevent the high-speed scouring of the fluid in the flow channel 7 from damaging the nozzle body 1 and the nozzle core 2. The assembly process is to first thread the nozzle core 2 into the first connecting part 4. When the nozzle core 2 contacts the annular seat 12, the installation is completed, and then the sealant is injected from the glue injection groove 11. The sealant can fill the gap between the nozzle core 2 and the first connecting part 4, and is connected with the first external thread 9 and the internal thread 8 for better sealing effect. Finally, the second connecting part 5 is used to connect with the external equipment. The fastener 6 can facilitate the installation and disassembly of the nozzle body 1 with a wrench.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0031] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this patent.

Claims

1. A threaded element with corrosion resistance, characterized in that: It comprises a nozzle body (1) and a nozzle core (2), wherein the nozzle body (1) and the nozzle core (2) are both made of nickel-based alloy, and the surfaces of the nozzle body (1) and the nozzle core (2) are sprayed with a protective layer (3); One end of the nozzle body (1) is provided as a first connection part (4), and the other end of the nozzle body (1) is provided as a second connection part (5). A fastener (6) is provided in the middle of the nozzle body (1). A flow passage (7) which passes through the nozzle body (1) from top to bottom is provided inside the nozzle body (1). An internal thread (8) is provided inside the first connection part (4). A first external thread (9) matching the internal thread (8) is provided outside the nozzle core (2). The nozzle core (2) is threadedly connected to the first connection part (4), and a second external thread (10) is provided outside the second connection part (5).

2. A threaded element with corrosion resistance according to claim 1, characterized in that: The protective layer (3) is a ceramic coating, and the thickness of the ceramic coating is 1.5 mm-2 mm.

3. The threaded element with corrosion resistance according to claim 1, characterized in that: Four glue injection grooves (11) in a ring array are arranged on the outside of the first connecting portion (4), and sealing glue is filled between the glue injection grooves (11) and the nozzle core (2).

4. The threaded element with corrosion resistance according to claim 1, characterized in that: An annular seat (12) is provided at the bottom end of the interior of the first connecting portion (4), and one end of the nozzle core (2) abuts against the surface of the annular seat (12).

5. The threaded element with corrosion resistance according to claim 1, characterized in that: The fastener (6) is an external hexagonal nut.

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