CN219549586U

CN219549586U - Threaded connection device

Info

Publication number: CN219549586U
Application number: CN202320178452.3U
Authority: CN
Inventors: 金仲平; 胡家扬; 张小中; 陈灵江; 徐雯琪; 唐维兵; 郭黎群; 张洪波
Original assignee: Puma Zhejiang Aviation Equipment Co ltd
Current assignee: Zhejiang Jaguar Special Equipment Co ltd
Priority date: 2023-02-10
Filing date: 2023-02-10
Publication date: 2023-08-18
Anticipated expiration: 2033-02-10

Abstract

The utility model discloses a threaded connection device, which relates to the field of threaded connectors and aims at solving the problems that welding is easy to break and threads are easy to loosen in the prior art. The limiting groove is formed in the orifice of the connecting hole, the through groove is formed in the hexagonal double-external-thread connector, the limiting column penetrates through the through groove and is inserted into the limiting groove, and the hexagonal double-external-thread connector and the threaded port are limited in the circumferential direction so as to prevent the hexagonal double-external-thread connector and the threaded port from rotating in the circumferential direction, so that loosening of threads is prevented; through setting up screw thread mouth and hexagonal two external screw joint eccentric, can make it be difficult for rotating in expend with heat and contract with cold, atress inequality.

Description

Threaded connection device

Technical Field

The utility model relates to the field of threaded connectors, in particular to a threaded connecting device.

Background

The main stream heating mode of the domestic autoclave is electric heating. The tail end socket electric heating pipe is connected with the end socket by adopting the welding of the joint edge and the end socket and the forced sealing of the electric heating pipe and the joint edge by using the gasket, a large number of welding spots can appear in the welding connection, the welding spots are easy to damage, once the condition of unqualified welding exists, the quality of the whole autoclave is affected, and the end socket is easy to deform after welding. Chinese patent CN202220874065.9 discloses a threaded connection device for a pressure vessel shell, which adopts the technical scheme that the device comprises a seal head body, wherein a mounting hole is formed in the seal head body; still including cutting ferrule body and cutting ferrule nut, offered first thread groove in the mounting hole of head body, the screw thread section with first thread groove looks meshing has been seted up to the left end of cutting ferrule body, and the right-hand member of cutting ferrule body is connected with cutting ferrule nut through the second screw thread section, has offered through-hole and counter bore that supply heating tube base pipe passed respectively on cutting ferrule body and the cutting ferrule nut, still is equipped with preceding cutting ferrule and back cutting ferrule between cutting ferrule body and the cutting ferrule nut, and preceding cutting ferrule and back cutting ferrule all suit are on the heating tube base pipe.

The threaded connection is more convenient, but in the use process, the loosening of threads caused by perennial expansion and contraction can occur.

Disclosure of Invention

In view of the problems existing in the prior art, the utility model discloses a threaded connection device, which comprises an autoclave seal head and a hexagonal double-external-thread connector, wherein a connecting hole is formed in the autoclave seal head, threads are arranged in the connecting hole, threaded openings are formed in the upper section and the lower section of the hexagonal double-external-thread connector, the threaded openings in the upper section and the lower section of the hexagonal double-external-thread connector are meshed with threads in the connecting hole, the threaded openings are different in outer diameter and the same in inner diameter, a limiting groove is formed in the connecting hole, a through groove is formed in the hexagonal double-external-thread connector, limiting columns are connected in a sliding mode in the limiting groove and the through groove, the through groove and the limiting columns are inserted into the through groove and the limiting groove, and the hexagonal double-external-thread connector is limited through the limiting columns, so that loosening of the threads can be prevented, and stable connection is ensured.

As a preferable technical scheme of the utility model, the thread section of the connecting hole is four fifths of the length of the connecting hole.

As a preferable technical scheme of the utility model, the threaded port is eccentrically arranged on the hexagonal double-external-thread connector, so that the stress on the periphery of the hexagonal double-external-thread connector is uneven.

As a preferable technical scheme of the utility model, the limit groove is a blind groove.

As a preferable technical scheme of the utility model, the through groove is a through groove so as to facilitate the passing of the limit column.

The utility model has the beneficial effects that: according to the utility model, the limiting groove is formed in the orifice of the connecting hole, the through groove is formed in the hexagonal double-external-thread connector, the limiting column penetrates through the through groove and is inserted into the limiting groove, and the hexagonal double-external-thread connector and the threaded port are limited in the circumferential direction so as to prevent the hexagonal double-external-thread connector and the threaded port from rotating in the circumferential direction, so that the threads are prevented from loosening; through setting up screw thread mouth and hexagonal two external screw joint eccentric, can make it be difficult for rotating in expend with heat and contract with cold, atress inequality.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. Like elements or portions are generally identified by like reference numerals throughout the several figures. In the drawings, elements or portions thereof are not necessarily drawn to scale.

FIG. 1 is a schematic diagram of a connection port opening structure according to the present utility model;

FIG. 2 is a schematic view of the hexagonal double-external thread joint structure of the present utility model;

FIG. 3 is a schematic view of the hexagonal double-external thread joint and the threaded port structure of the present utility model;

fig. 4 is a schematic structural view of a hexagonal double-external-thread joint connection limiting column of the utility model.

In the figure: 1. sealing head of autoclave; 2. a connection hole; 3. a limit groove; 4. hexagonal double-external thread joint; 5. a threaded port; 6. penetrating a groove; 7. and a limit column.

Detailed Description

Example 1

As shown in fig. 1 to 4, the utility model discloses a threaded connection device, which adopts the technical scheme that a connecting hole 2 is formed in an autoclave seal head 1, a threaded groove is formed in the connecting hole 2, a round opening is formed in the autoclave seal head 1 during processing of the connecting hole 2, a tapping machine is used for accurately tapping according to thread teeth and taper, the tapping machine does not tap the autoclave seal head 1 to four fifth positions, a limit groove 3 is formed in the remaining fifth position, the fact that the threaded connector is just screwed to the limit groove 3 each time can be guaranteed, the limit groove 3 is a square groove and is communicated with the outside, a through groove 6 is formed in a hexagonal double-external screw connector 4 connected with the connecting hole 2, and the through groove 6 is also a square groove and corresponds to the limit groove 3 in position. Size assorted, through passing square spacing post 7 in inserting spacing groove 3 through wearing groove 6, spacing to prevent hexagonal double-external thread joint 4 circumference rotation, prevent not hard up, threaded mouth 5 has been seted up from top to bottom to hexagonal double-external thread joint 4, including first threaded mouth and second threaded mouth, first threaded mouth and second threaded mouth internal diameter are the same, and first threaded mouth external diameter is greater than the second threaded mouth external diameter.

The working principle of the utility model is as follows: after the first threaded port of the threaded port 5 is screwed into the connecting hole 2, when the connecting hole is completely screwed, the limiting groove 3 and the penetrating groove 6 are coaxial, the limiting column 7 penetrates through the penetrating groove 6 and is inserted into the limiting groove 3 to limit, looseness between the threaded port 5 and the connecting hole 2 is prevented, and after the connecting hole is tested to be qualified, the autoclave seal head 1 is welded on the autoclave cylinder body.

The mechanical connection according to the utility model is a customary practice adopted by the person skilled in the art, and the technical teaching can be obtained by a limited number of tests, which belongs to the common general knowledge.

The components not described in detail herein are prior art.

Although the specific embodiments of the present utility model have been described in detail, the present utility model is not limited to the above embodiments, and various changes and modifications without inventive labor may be made within the scope of the present utility model without departing from the spirit of the present utility model, which is within the scope of the present utility model.

Claims

1. The utility model provides a threaded connection device, includes autoclave head (1) and hexagonal double-external thread joint (4), there is connecting hole (2) on autoclave head (1), there is the screw thread in connecting hole (2), section all has screw thread mouth (5) about hexagonal double-external thread joint (4), screw thread mouth (5) with screw thread in connecting hole (2) meshes, its characterized in that: the threaded port (5) of the upper section and the lower section of the hexagonal double-external-thread connector (4) has different outer diameters and the same inner diameter, the connecting hole (2) is provided with a limiting groove (3), the hexagonal double-external-thread connector (4) is provided with a penetrating groove (6), and the limiting groove (3) and the penetrating groove (6) are connected with a limiting column (7) in a sliding manner.

2. A threaded connection according to claim 1, characterized in that: the thread section of the connecting hole (2) is four fifths of the length of the connecting hole (2).

3. A threaded connection according to claim 1, characterized in that: the threaded port (5) is eccentrically arranged on the hexagonal double-external-thread connector (4).

4. A threaded connection according to claim 1, characterized in that: the limiting groove (3) is a blind groove.

5. A threaded connection according to claim 1, characterized in that: the through groove (6) is a through groove.