CN209990473U - Cement head fast-assembling device - Google Patents
Cement head fast-assembling device Download PDFInfo
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- CN209990473U CN209990473U CN201920774467.XU CN201920774467U CN209990473U CN 209990473 U CN209990473 U CN 209990473U CN 201920774467 U CN201920774467 U CN 201920774467U CN 209990473 U CN209990473 U CN 209990473U
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- joint
- groove
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- nut
- upper joint
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Abstract
The utility model discloses a cement head fast-assembling device, which comprises an upper joint, a big nut and a lower joint; the lower part of the upper joint is of a structure with a wide upper part and a narrow lower part; the upper part of the lower joint is provided with a groove which is matched with the lower part of the upper joint and is wide at the top and narrow at the bottom; the lower part of the upper joint is inserted into the groove at the upper part of the lower joint; a limiting step is arranged in the middle of the upper joint, so that a gap is reserved between the bottom surface of the lower part of the upper joint and the bottom of the groove in the upper part of the lower joint after the lower part of the upper joint is inserted into the groove in the upper part of the lower joint; the outer wall of the upper part of the lower joint is provided with an external thread; the inner diameter of the upper part of the large nut is equal to the diameter of the upper part of the upper joint, the inner diameter of the lower part of the large nut is equal to the diameter of the upper part of the lower joint, and inner threads are arranged on the inner wall of the lower part of the large nut; the upper portion of big nut is spacing by spacing step, and the internal thread of big nut lower part inner wall forms threaded connection with the external screw thread of lower clutch upper portion outer wall. The utility model relates to a cementing head fast-assembling device, this device simple to operate can change different lower clutch.
Description
Technical Field
The utility model relates to a cementing head fast-assembling device.
Background
Cementing heads are common tools in cementing operations. The quick-mounting cement head device is arranged on a cement head, and a lower joint with a proper buckle type is selected to realize connection with a lower casing. The existing common cement head is generally fixed in a buckling mode, if the buckling mode of a casing pipe connected with the common cement head is different, the cement head needs to be replaced, and after the buckling mode is used for many times, the buckling mode is easy to damage, leakage is generated, the well cementation production operation is influenced, the service life is prolonged, and therefore the cement head is not convenient to use.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a cementing head fast-assembling device aims at solving above-mentioned problem.
In order to achieve the purpose, the technical scheme of the utility model is to design a cement head fast-assembling device, which comprises an upper joint, a big nut and a lower joint; the lower part of the upper joint is of a structure with a wide upper part and a narrow lower part; the upper part of the lower joint is provided with a groove which is wide at the top and narrow at the bottom and is matched with the lower part of the upper joint; the lower part of the upper joint is inserted into the groove at the upper part of the lower joint; a limiting step is arranged in the middle of the upper joint, so that a gap is reserved between the bottom surface of the lower part of the upper joint and the bottom of the groove in the upper part of the lower joint after the lower part of the upper joint is inserted into the groove in the upper part of the lower joint; the outer wall of the upper part of the lower connector is provided with an external thread; the inner diameter of the upper part of the large nut is equal to the diameter of the upper part of the upper joint, the inner diameter of the lower part of the large nut is equal to the diameter of the upper part of the lower joint, and inner threads are arranged on the inner wall of the lower part of the large nut; the big nut is sleeved into the upper joint from top to bottom, the upper portion of the big nut is limited by the limiting step, and the internal thread of the inner wall of the lower portion of the big nut is in threaded connection with the external thread of the outer wall of the upper portion of the lower joint.
Furthermore, the outer wall of the lower part of the upper joint is provided with a plurality of transverse grooves.
The purpose of designing a transverse groove and leaving a gap between the bottom surface of the lower part of the upper joint and the bottom of the groove of the upper part of the lower joint is as follows: at the moment when the upper joint is inserted into the lower joint, air near the groove of the lower joint or a small amount of liquid attached to the groove wall can be instantly compressed to generate reverse force to prevent the upper joint from being smoothly inserted into the lower joint, and the transverse groove and the gap enable the air and the liquid to have flowing space, so that the reverse force formed instantly is reduced, namely the upper joint can be smoothly inserted into the lower joint.
The large nut and the lower joint are fastened by adopting the screw joint, the upper joint and the large nut do not adopt the screw joint mode, the upper part of the large nut is pressed against the limit step to realize the screw joint, and the damage between the upper joint and the large nut during repeated assembly and disassembly is reduced. While the lower joint is an alternative component.
The utility model has the advantages and the beneficial effects that: the utility model relates to a cementing head fast-assembling device, this device simple to operate, easy operation can change the lower clutch of different knot types to make cementing head can be connecting sleeve easily, if detain the type and damage, can directly change the lower clutch.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.
Example (b):
a cement head fast-assembling device comprises an upper joint 1, a large nut 2 and a lower joint 3; the lower part of the upper joint 1 is of a structure with a wide upper part and a narrow lower part; the upper part of the lower joint 3 is provided with a groove which is matched with the lower part of the upper joint 1 and is wide at the top and narrow at the bottom; the lower part of the upper joint 1 is inserted into a groove at the upper part of the lower joint 3; the middle part of the upper joint 1 is provided with a limiting step 4, so that after the lower part of the upper joint 1 is inserted into the groove at the upper part of the lower joint 3, a gap is reserved between the bottom surface of the lower part of the upper joint 1 and the bottom of the groove at the upper part of the lower joint 3; the outer wall of the upper part of the lower joint 3 is provided with an external thread; the inner diameter of the upper part of the large nut 2 is equal to the diameter of the upper part of the upper joint 1, the inner diameter of the lower part of the large nut 2 is equal to the diameter of the upper part of the lower joint 3, and the inner wall of the lower part of the large nut 2 is provided with internal threads; the large nut 2 is sleeved into the upper joint 1 from top to bottom, the upper portion of the large nut 2 is limited by the limiting step 4, and the internal thread of the inner wall of the lower portion of the large nut 2 is in threaded connection with the external thread of the outer wall of the upper portion of the lower joint 3.
The outer wall of the lower part of the upper joint 1 is provided with a plurality of transverse grooves 5.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.
Claims (2)
1. The utility model provides a cementing head quick-assembling device which characterized in that: comprises an upper joint, a big nut and a lower joint; the lower part of the upper joint is of a structure with a wide upper part and a narrow lower part; the upper part of the lower joint is provided with a groove which is wide at the top and narrow at the bottom and is matched with the lower part of the upper joint; the lower part of the upper joint is inserted into the groove at the upper part of the lower joint; a limiting step is arranged in the middle of the upper joint, so that a gap is reserved between the bottom surface of the lower part of the upper joint and the bottom of the groove in the upper part of the lower joint after the lower part of the upper joint is inserted into the groove in the upper part of the lower joint; the outer wall of the upper part of the lower connector is provided with an external thread; the inner diameter of the upper part of the large nut is equal to the diameter of the upper part of the upper joint, the inner diameter of the lower part of the large nut is equal to the diameter of the upper part of the lower joint, and inner threads are arranged on the inner wall of the lower part of the large nut; the big nut is sleeved into the upper joint from top to bottom, the upper portion of the big nut is limited by the limiting step, and the internal thread of the inner wall of the lower portion of the big nut is in threaded connection with the external thread of the outer wall of the upper portion of the lower joint.
2. The cement head quick-assembling device as claimed in claim 1, characterized in that: and a plurality of transverse grooves are formed in the outer wall of the lower part of the upper joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920774467.XU CN209990473U (en) | 2019-05-28 | 2019-05-28 | Cement head fast-assembling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920774467.XU CN209990473U (en) | 2019-05-28 | 2019-05-28 | Cement head fast-assembling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209990473U true CN209990473U (en) | 2020-01-24 |
Family
ID=69295310
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920774467.XU Active CN209990473U (en) | 2019-05-28 | 2019-05-28 | Cement head fast-assembling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209990473U (en) |
-
2019
- 2019-05-28 CN CN201920774467.XU patent/CN209990473U/en active Active
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