CN215256099U

CN215256099U - Shunt short circuit

Info

Publication number: CN215256099U
Application number: CN202121803180.9U
Authority: CN
Inventors: 蔡纪东; 张军; 丁义东
Original assignee: Wuxi Huaxin Petroleum Machine Co ltd
Current assignee: Wuxi Huaxin Petroleum Machine Co ltd
Priority date: 2021-08-03
Filing date: 2021-08-03
Publication date: 2021-12-21
Anticipated expiration: 2031-08-03

Abstract

The utility model discloses a shunt short circuit, its technical scheme includes the short circuit body, the one end of short circuit body is provided with the connector, the connector side is provided with the external screw thread section that is the slope, the inside division of short circuit body has the hole, the hole includes internal thread section, first horizontal segment and second horizontal segment, the utility model discloses more outstanding leakproofness and better joint strength have.

Description

Shunt short circuit

Technical Field

The utility model relates to a drilling rod shunt adapting unit field especially relates to the shunt short circuit.

Background

The drill rod is a rod-shaped or tubular part which transmits power to the drill bit and enters a drill hole along with the drill bit, and is widely applied to engineering construction. At present, water is generally needed to be used as a flushing medium when drilling, the water is pumped out from high-pressure water and then passes through a flow divider and is input into a drill rod, and the water is sprayed out from the head of the drill rod to flush. The shunt short circuit is a connecting piece between the shunt and the drill rod, when the shunt short circuit works, the shunt and the drill rod rotate together underground, the connection strength and the sealing performance of the shunt short circuit are extremely high, and the existing straight pipe type short circuit cannot meet the existing requirements.

Disclosure of Invention

To the shortcoming of the above-mentioned prior art, the utility model aims at providing a shunt short circuit has more outstanding leakproofness and better joint strength.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a shunt short circuit, includes the short circuit body, the one end of short circuit body is provided with the connector, the connector side is provided with the external screw thread section that is the slope, the inside opening of short circuit body has the hole, the hole includes internal thread section, first horizontal segment and second horizontal segment.

Furthermore, the outer edge of the outward end part of the external thread section is provided with a first chamfer.

Further, the first chamfer is 60 °.

Further, the inlet of the internal thread section is provided with a bell mouth.

Further, the edge of the bell mouth is rounded.

Further, the inner bore includes a transition section disposed between the inner threaded section and the first horizontal section.

Further, the transition section is arranged in an inclined mode.

Further, the axial included angle between the transition section and the short-circuit body is 44 degrees.

Further, the first horizontal segment is located the middle part of short circuit body to the internal diameter of first horizontal segment is less than the internal diameter of second horizontal segment.

Furthermore, the edge at the transition of the first horizontal section and the second horizontal section is rounded.

To sum up, the utility model discloses following beneficial effect has:

1. the internal thread section and the external thread section are obliquely arranged, so that the length of a threaded connection part is prolonged, the firmness degree of the connection part is ensured, and the internal thread section and the external thread section can disperse partial non-radial stress due to the fact that the drill rod can be subjected to non-radial stress when rotating, and the bearing capacity of the connection part is improved; and the contact area of the joint of the parts is increased, so that water is difficult to flow out of the joint, and the sealing performance of the joint is ensured.

2. The internal diameter of first horizontal segment is less than the internal diameter of second horizontal segment, and first horizontal segment is protruding to the center pin in the hole promptly, and the convenience offsets with inserting short circuit part terminal surface, increases the area of contact of part junction, further junction sealing performance.

3. Circular arc transition or inclined plane transition is adopted among each structure, and excessive right-angled edges are avoided, so that stress concentration at the tip is reduced.

Drawings

Fig. 1 is a schematic diagram of a half-section structure of a shunt short circuit.

In the figure, 1, shorting the body; 2. a connector; 21. an external threaded section; 22. chamfering; 3. an inner bore; 31. An internal thread section; 311. a bell mouth; 32. a transition section; 33. a first horizontal segment; 34. a second horizontal segment.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the following device of the present invention will be described in detail with reference to the accompanying drawings and specific embodiments. The advantages and features of the present invention will become more apparent from the following description. It is to be noted that the drawings are in a very simplified form and are not to precise scale, which is merely for the purpose of facilitating and distinctly claiming the embodiments of the present invention. To make the objects, features and advantages of the present invention more comprehensible, please refer to the attached drawings. It should be understood that the structure, ratio, size and the like shown in the drawings attached to the present specification are only used for matching with the content disclosed in the specification, so as to be known and read by those skilled in the art, and are not used for limiting the limitation of the implementation of the present invention, so that the present invention does not have the essential significance in the technology, and any modification of the structure, change of the ratio relationship or adjustment of the size should still fall within the scope of the technical content disclosed in the present invention without affecting the function and the achievable purpose of the present invention.

Example (b):

the utility model provides a shunt short circuit, as shown in figure 1, includes short circuit body 1, and short circuit body 1 is used for connecting other two parts, and short circuit body 1 is the cavity setting, makes things convenient for water to pass through short circuit body 1.

Further, as shown in fig. 1, one end of the short circuit body 1 is provided with a connector 2, the side surface of the connector 2 is obliquely arranged, the size of the connector 2 gradually decreases from inside to outside, and the maximum outer diameter of the connector 2 is smaller than the outer diameter of the short circuit body 1. The side of the connector 2 is provided with an external thread section 21, and the external thread section 21 is also arranged in an inclined manner, so that the area of the threaded connection part is further increased, and the connection stability is improved. And the ability of the bevel to withstand non-radial stresses is better.

Further, as shown in fig. 1, the outer edge of the outward end of the external thread section 21 is provided with a first chamfer 22, and the first chamfer 22 is 60 degrees, so that the threads can be conveniently engaged, and the end edge of the external thread section 21 can be prevented from being damaged by collision as much as possible.

Further, as shown in fig. 1, an inner hole 3 is formed in the short circuit body 1, and the inner hole 3 is arranged on a central shaft of the short circuit body 1.

Further, as shown in fig. 1, the inner bore 3 includes an internal thread section 31, a first horizontal section 33 and a second horizontal section 34, the internal thread section 31, the first horizontal section 33 and the second horizontal section 34 are sequentially arranged from outside to inside, and the internal thread section 31 is located at an end far away from the connecting head 2.

Further, as shown in fig. 1, the internal thread section 31 is obliquely arranged, and the diameter of the hole 3 is uniformly reduced from outside to inside, so as to increase the contact area of the connection part and improve the connection tightness. The entrance of the internal thread section 31 is provided with a bell mouth 311, which is convenient for external components to be inserted for threaded connection. The edge of the bell mouth 311 is rounded, and the radius of the rounded angle is R0.4mm.

Further, as shown in fig. 1, the inner bore 3 includes a transition section 32, the transition section 32 is disposed between the inner thread section 31 and the first horizontal section 33, the transition section 32 is disposed in an inclined manner, and an included angle formed between the transition section 32 and the central axis is 44 °. The transition section 32 is provided to avoid abrupt changes in profile between the internal thread section 31 and the first horizontal section 33, and a gentle transition profile is provided to avoid excessive stress concentrations.

Further, as shown in fig. 1, the first horizontal segment 33 is located in the middle of the short circuit body 1, and the inner diameter of the first horizontal segment 33 is smaller than the inner diameter of the second horizontal segment 34, that is, the first horizontal segment 33 protrudes toward the central axis in the inner hole 3, so that the end face of the short circuit component can be conveniently abutted with the end face of the inserted short circuit component, the contact area of the component connection part is increased, and the sealing performance of the connection part is further improved.

Further, as shown in fig. 1, the edges at the transition between the first horizontal segment 33 and the second horizontal segment 34 are rounded with a radius size of R3 mm. Also, in order to avoid the stress concentration at the tip, the shape is rounded at the position where the shape changes abruptly.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a shunt short circuit which characterized in that: including the short circuit body, the one end of short circuit body is provided with the connector, the connector side is provided with the external screw thread section that is the slope, the inside hole that has opened of short circuit body, the hole includes internal thread section, first horizontal segment and second horizontal segment, internal thread section is the slope setting.

2. The shunt short circuit of claim 1, wherein: the outer edge of the outward end part of the external thread section is provided with a first chamfer.

3. The shunt short circuit of claim 2, wherein: the first chamfer is 60 °.

4. The shunt short circuit of claim 1, wherein: and the inlet of the internal thread section is arranged to be a bell mouth.

5. The shunt short circuit of claim 4, wherein: the edge of the bell mouth is rounded.

6. The shunt short circuit of claim 1, wherein: the inner bore includes a transition section disposed between the inner threaded section and the first horizontal section.

7. The shunt short circuit of claim 6, wherein: the transition section is arranged in an inclined mode.

8. The shunt short circuit of claim 7, wherein: the axial included angle between the transition section and the short-circuit body is 44 degrees.

9. The shunt short circuit of claim 1, wherein: the first horizontal segment is located the middle part of short circuit body to the internal diameter of first horizontal segment is less than the internal diameter of second horizontal segment.

10. The shunt short circuit of claim 8, wherein: and the edges at the transition of the first horizontal section and the second horizontal section are rounded.