CN210375510U

CN210375510U - Pressure gauge joint

Info

Publication number: CN210375510U
Application number: CN201921348255.1U
Authority: CN
Inventors: 管鹏举
Original assignee: Hunan Aerospace Institute of Mechanical and Electrical Equipment and Special Materials
Current assignee: Hunan Aerospace Institute of Mechanical and Electrical Equipment and Special Materials
Priority date: 2019-08-20
Filing date: 2019-08-20
Publication date: 2020-04-21
Anticipated expiration: 2029-08-20

Abstract

The utility model provides a pressure meter connector, includes the go-between, is pipy first joint, the one end of first joint is provided with first connecting thread, be provided with second connecting thread on the go-between, the go-between with the one end threaded connection of first joint, the go-between with be provided with axial limit structure between the first joint, axial limit structure is provided with third connecting thread, first joint and axial limit structure threaded connection. The utility model discloses a mode of threaded connection makes the first joint in the pressure gauge joint length adjustable in the link ring for the top of first joint can directly compress tightly with the lead screw of manometer, reaches sealed effect.

Description

Pressure gauge joint

Technical Field

The utility model relates to a pipeline transportation field, in particular to pressure gauge joint.

Background

A pipeline is an indispensable structure for fluid transportation, such as transportation of liquid and transportation of gas. A pressure gauge is typically provided on the pipe to measure the pressure within the pipe. When the pressure gauge is installed, a pressure gauge joint is usually connected to the pressure gauge, and then the pressure gauge joint is connected to the joint on the pipeline in a threaded manner.

But the lead screw of some manometer is too short, leads to the lead screw length that can screw into the pressure meter and connect too short, can not compress tightly completely with the manometer joint, leads to sealed bad.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: overcome above-mentioned defect, provide a pressure meter connector that can strengthen sealed effect.

The utility model adopts the technical proposal that: the utility model provides a pressure meter connector, includes the go-between, is pipy first joint, the one end of first joint is provided with first connecting thread, be provided with second connecting thread on the go-between, the go-between with the one end threaded connection of first joint, the go-between with be provided with axial limit structure between the first joint, axial limit structure is provided with third connecting thread, first joint and axial limit structure threaded connection.

Preferably, the first connecting thread is an external thread, the second connecting thread is a first internal thread, and the third connecting thread is a second internal thread.

Preferably, the axial limiting structure is provided with a limiting ring, the connecting ring is provided with a limiting sleeve engaged with the limiting ring on the axial limiting structure, and the connecting ring is rotatably sleeved on the axial limiting structure.

Preferably, part of the outer peripheral wall of the axial limiting structure is a prismatic surface.

Preferably, the other end of the first joint is provided with a fourth connecting thread.

Preferably, the end face of one end of the first joint is provided with a sealing ring.

The utility model discloses a beneficial effect be: the length of a first joint in the pressure gauge joint in the connecting ring can be adjusted in a threaded connection mode, so that the top of the first joint can be directly pressed with a screw rod of a pressure gauge, and a sealing effect is achieved.

Drawings

Figure 1 is a cross-sectional view of an embodiment of the invention;

fig. 2 is a schematic view of the connection between the utility model and the pressure gauge.

Detailed Description

Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

As shown in fig. 1, the pressure gauge connector comprises a connecting ring 30 and a first connector 40 in a tubular shape, wherein one end of the first connector 40 is provided with a first connecting thread, and the connecting ring 30 is provided with a second connecting thread and is in threaded connection with one end of the first connector 40; an axial limiting structure 20 is arranged between the connecting ring 30 and the first connector 40, the axial limiting structure 20 is provided with a third connecting thread, and the first connector 40 is in threaded connection with the axial limiting structure 20.

The embodiment is provided with the first connector and the connecting ring, because one end of the first connector is provided with the first connecting thread, the connecting ring is rotatably sleeved at one end of the first connector, the axial limiting structure is arranged between the connecting ring and the first connector, and the first connector is in threaded connection with the axial limiting structure, the pressure gauge can be connected with the connecting ring, the height of the first connector in the connecting ring is adjusted, the pressure gauge is compressed with the first connector, and the sealing between the pressure gauge and the pressure gauge connector is realized by screwing the connecting ring.

In this embodiment, a thread 10a for assembling the screw rod is provided inside the pressure gauge 10, because the thread used for connecting the pipe on the pressure gauge 10 is usually an external thread 10b, and the interface used for connecting the pressure gauge on the pipe is usually an internal thread, the second connecting thread on the connecting ring 30 is set as a first internal thread 30a, the first connecting thread at one end of the first joint 40 and the fourth connecting thread at the other end are both set as an external thread 40a, and the third connecting thread on the axial limiting structure is set as a second internal thread 20 a.

As shown in fig. 1, the axial limiting structure 20 is provided with a limiting ring 21, the connecting ring 30 is provided with a limiting sleeve 31 engaged with the limiting ring 21 on the axial limiting structure 20, and the connecting ring 30 is rotatably sleeved on the axial limiting structure 20.

In practice, the maximum diameter of the first joint 40 in the region between the stopper ring 21 and the end surface of the other end of the first joint 40 may be smaller than the minimum inner diameter of the connection ring 30. Therefore, the connecting ring 30 can be sleeved in from the other end of the first joint 40, and the connecting ring 30 is moved to the position of the limiting ring 21, so that the installation of the connecting ring 30 is more convenient.

As shown in fig. 1, a part of the outer peripheral wall of the first contact 40 is a hexagonal prism surface, which facilitates the use of a tool such as a wrench to hold the first contact 40.

The hexagonal prism surface is merely an example, and may be a triangular prism surface, a quadrangular prism surface, or the like.

Further, a sealing ring is arranged on the end face of one end of the first joint 40 connected with the pressure gauge 10. After the seal ring is provided, when the connection ring 30 is screwed, the end surface of the first joint 40 and the end surface of the pressure gauge 10 can be sealed by the seal ring, thereby further improving the sealing performance at the connection portion.

Claims

1. The utility model provides a pressure gauge joint, includes go-between (30), is pipy first joint (40), the one end of first joint (40) is provided with first connecting thread, be provided with second connecting thread on go-between (30), go-between (30) with the one end threaded connection of first joint (40), go-between (30) with be provided with axial limit structure (20) between first joint (40), its characterized in that, axial limit structure (20) are provided with third connecting thread, first joint (40) and axial limit structure (20) threaded connection.

2. A pressure tap according to claim 1, characterised in that the first connecting thread is an external thread (40 a), the second connecting thread is a first internal thread (30 a) and the third connecting thread is a second internal thread (20 a).

3. A pressure tap according to claim 2, characterized in that the axial position-limiting structure (20) is provided with a position-limiting ring (21), the connection ring (30) is provided with a position-limiting sleeve (31) engaged with the position-limiting ring (21) of the axial position-limiting structure (20), and the connection ring (30) is rotatably sleeved on the axial position-limiting structure (20).

4. A pressure tap according to claim 2, characterised in that part of the peripheral wall of the axial stop (20) is prismatic.

5. Pressure tap according to claim 1, characterised in that the other end of the first tap (40) is provided with a fourth connecting thread.

6. A pressure tap according to any one of claims 1-5, characterised in that the end surface of the first tap (40) at one end is provided with a sealing ring.