CN110761785A - Pressure maintaining cabin structure with glass window - Google Patents

Abstract

The invention relates to a pressure-holding cabin structure with a glass viewing window, comprising a cylinder body, a glass viewing window is arranged on the upper part of the cylinder body, a window for the glass viewing window is arranged on the side wall of the cylinder body, and the glass viewing window is embedded in the window; The window gradually narrows from the inside to the outside, and the glass window is a structure that matches the window and gradually becomes thinner from the inside to the outside; the thickness of the glass window is equal to the wall thickness of the barrel, and the outer surface of the glass window is the same as the barrel The outer surface of the body is flush. The invention carries out visual design of the cabin body, a glass viewing window is arranged on the cabin body, the laser can be injected from the outside, and the displacement is measured by the laser, which is convenient to monitor the deformation of the cabin body and the internal parts from the outside, and test the pressure resistance of the pressure-holding cabin. To understand its deformation characteristics under different working conditions, it can verify the feasibility and scientificity of the design scheme, and it is convenient to improve the fidelity cabin in terms of structure and material, which is conducive to the research and development and development of the fidelity core drilling rig. The design provides experimental basis and data support.

Description

A pressure-holding cabin structure with a glass viewing window

technical field

The invention relates to the technical field of pressure-maintaining coring, in particular to a pressure-maintaining cabin structure with a glass viewing window.

Background technique

After the subsea drilling rig obtains samples in the deep sea, the fidelity tank pressure maintaining control device is required to maintain pressure and seal the samples in the in-situ environment. The pressure-holding performance of the fidelity cabin needs to be continuously verified and improved through tests. At present, there is a lack of means to measure the strain of components in the cabin in a high-pressure environment.

SUMMARY OF THE INVENTION

The present invention aims to provide a pressure-holding cabin structure with a glass viewing window, which is convenient for detecting the strain of internal parts from the outside.

For achieving the above object, the technical scheme adopted in the present invention is as follows:

A pressure-holding cabin structure with a glass viewing window comprises a cylinder body, a glass viewing window is arranged on the upper part of the cylinder body, a window for the glass viewing window is arranged on the side wall of the cylinder body, and the glass viewing window is embedded in the window.

Further, the window gradually narrows from the inside to the outside, and the glass viewing window is a structure that gradually becomes thinner from the inside to the outside matching the window.

Further preferably, the thickness of the glass viewing window is equal to the wall thickness of the cylinder there, and the outer surface of the glass viewing window is flush with the outer surface of the cylinder.

Preferably, there are at least two glass windows at equal intervals along the circumferential direction.

The above-mentioned pressure-holding cabin structure with a glass viewing window further includes an upper end sealing device for sealing the upper end of the cylinder body and a lower end sealing device for sealing the lower end of the cylinder body.

Further, the upper end sealing device includes an upper end plug and a sealing ring, the lower end sealing device includes a lower end plug and a sealing ring, both the upper end plug and the lower end plug are threadedly connected with the cylinder body, and the upper end plug and the lower end plug are connected with the inner wall of the cylinder. The sealing ring is added with a retaining ring to form a seal.

Preferably, the sealing ring is a polyurethane sealing ring.

Wherein, a medium channel communicating with the inside of the cylinder is reserved on the upper end plug.

Further, a flap valve is installed in the cylinder, and the flap valve includes a valve seat and a valve flap, and the valve flap is in sealing fit with the top of the valve seat.

Further, the flap valve is fixed in the cylinder through a spring and a mounting ring; the bottom surface of the valve seat is in contact with the lower end sealing device;

The spring is compressed between the flap valve and the mounting ring. The inner wall of the cylinder has an inner step for abutting the mounting ring. The valve is placed on the valve disc to provide initial sealing pressure to the valve disc, and a sealing ring is arranged between the valve seat and the cylinder body.

Compared with the prior art, the present invention has the following beneficial effects:

1. In the present invention, the cabin body is visually designed, and a glass window is set on the cabin body, so that the laser measurement signal of the laser scanning probe can be projected into it, and the internal part strain detection can be carried out, which can verify the feasibility and scientificity of the design scheme. It is convenient to improve the fidelity cabin in terms of structure and material, which is beneficial to provide test basis and data support for the research and development and design of the fidelity core drilling rig;

2. The present invention can also be used to test the sealing performance and deformation of different flap valves, and to verify the pressure-holding ability of flap valves of different structures and shapes.

Description of drawings

Figure 1 is a three-dimensional view of the cabin;

Figure 2 is an exploded view of the cabin;

Fig. 3 is the longitudinal sectional view of the cylinder;

Figure 4 is a transverse cross-sectional view of the cylinder;

Figure 5 is a longitudinal sectional view of the cabin;

Fig. 6 is a longitudinal sectional view of the present invention.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings.

As shown in FIGS. 1 and 2 , the structure of the pressure-holding cabin with a glass window disclosed in the present invention includes a cabin body, and the cabin body includes a cylinder body 21 and a glass window 212 arranged on the upper part of the cylinder body 21 . A window 211 is provided for a glass viewing window 212 in which the glass viewing window 212 is embedded. The glass window 212 is made of high pressure glass.

As shown in FIGS. 3 and 4 , the window 211 is gradually narrowed from the inside to the outside. As shown in FIGS. 2 and 5 , the glass viewing window 212 is a structure matched with the window 211 and gradually narrowed from the inside to the outside. The thickness of the glass window 212 is equal to the wall thickness of the barrel 21 , the outer surface of the glass window 212 is flush with the outer surface of the barrel 21 , and the inner surface of the glass window 212 is also flush with the inner wall of the barrel 21 .

The number of the glass viewing windows 212 can be set as required. In this embodiment, two, three or more glass viewing windows 212 are provided at equal intervals along the circumferential direction.

In the present invention, a glass viewing window 212 is arranged on the cabin, and laser can be injected from the outside, and the displacement can be measured by the laser, which can be used to monitor the deformation of the cabin and its internal parts, test the pressure resistance characteristics of the pressure-holding cabin, and understand its different working conditions. The deformation characteristics under the conditions can verify the feasibility and scientificity of the design scheme, facilitate the improvement of the fidelity cabin in terms of structure and material, and provide experimental basis and data support for the research and development and design of the fidelity core drilling rig.

As shown in FIG. 6 , the structure of the pressure-holding cabin with a glass viewing window further includes an upper end sealing device for sealing the upper end of the cylindrical body 21 and a lower end sealing device for sealing the lower end of the cylindrical body 21 .

The upper end sealing device includes an upper end plug 22 and a sealing ring 24, and the lower end sealing device includes a lower end plug 23 and a sealing ring 24. Between the head 23 and the inner wall of the cylinder 21, a sealing ring 24 is installed with a retaining ring to form a seal. The sealing ring 24 adopts hydrolysis-resistant polyurethane sealing ring, which can withstand high temperature and high pressure.

The upper end plug 22 is reserved with a medium channel 25 communicating with the inside of the cylinder 21, a pressure sensor interface and a watertight connector interface. The watertight connector interface can be installed with a watertight connector for transmitting strain sensor data. The medium channel 25 is used as an injection port and is connected to an external hydraulic source.

A flap valve 5 is installed in the cylinder body 21 . The flap valve 5 includes a valve seat 51 and a valve disc 52. The top of the valve seat 51 has a valve port sealing surface that matches the valve disc 52. The valve port sealing surface is a conical surface, and the valve disc 52 has a valve that matches the valve port sealing surface. The disc sealing surface has the same taper as the valve port sealing surface.

The flap valve 5 is installed and fixed on the cylinder body 21 through the installation ring 6 and the spring 7 . During the test, the flap valve 5 is placed at the inner bottom end of the cylinder 21 . The bottom surface of the valve seat 51 is in contact with the lower end plug 23; the spring 7 is compressed between the flap valve 5 and the mounting ring 6, the inner wall of the cylinder 21 has an inner step 214 for abutting the mounting ring 6, and the upper end of the spring 7 is against the mounting ring 6 The mounting ring 6 is pressed against the inner step 214 , and the lower end of the spring 7 presses against the valve disc 52 to provide initial sealing pressure to the valve disc 52 .

When installing the flap valve 5, the cabin body is vertically inverted, that is, the upper end plug 22 is located below, then the lower end plug 23 is unscrewed, and the installation ring 6 is placed in the cabin. The inner step 214 of the On the spring 7, the lower end of the spring 7 is pressed against the mounting ring 6; the upper end of the spring 7 is pressed against the valve disc 52 to prevent the flap valve 5 from continuing to fall, while the spring 7 provides the initial sealing pressure to the valve disc 52, and then the lower end is blocked The head 23 is screwed on the valve seat 52 to realize the installation of the flap valve 5, and then the cabin body can be erected upright. The valve seat 51 is provided with a sealing ring 24 to achieve sealing with the cylinder body 21 .

The invention can also be used to test the sealing performance and deformation of different flap valves, and to verify the nominal pressure of flap valves of different structures and shapes. The sealing performance can be tested by adding a fluorescent agent to the liquid medium entering the cabin, and using a fluorometer to detect the leakage path; or by installing multiple acoustic emission sensors and using an acoustic detector to detect valve leakage; The amount of deformation can be monitored by installing strain gauges, etc.

Of course, the present invention can also have other various embodiments, without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding changes and deformations according to the present invention, but these corresponding changes and deformation should belong to the protection scope of the appended claims of the present invention.

Claims (10)

1. A pressure-holding cabin structure with a glass viewing window, comprising a cylinder body, characterized in that: the upper part of the cylinder body is provided with a glass viewing window, and the side wall of the cylinder body is provided with a window for the glass viewing window, and the glass viewing window is embedded in the window. 2 . The pressure-holding cabin structure according to claim 1 , wherein the window gradually narrows from the inside to the outside, and the glass viewing window is a structure that matches the window and gradually becomes thinner from the inside to the outside. 3 . 3. The pressure-holding cabin structure according to claim 1 or 2, wherein the thickness of the glass window is equal to the wall thickness of the cylinder, and the outer surface of the glass window is flush with the outer surface of the cylinder. 4 . The pressure-holding cabin structure according to claim 1 , wherein at least two glass viewing windows are provided at equal intervals along the circumferential direction. 5 . 5. The pressure-holding cabin structure according to claim 1, characterized in that it further comprises an upper end sealing device for sealing the upper end of the cylinder body and a lower end sealing device for sealing the lower end of the cylinder body. 6. The pressure-holding cabin structure according to claim 5, wherein the upper end sealing device comprises an upper end plug and a sealing ring, the lower end sealing device comprises a lower end plug and a sealing ring, and both the upper end plug and the lower end plug are connected to the cylinder. Body threaded connection, the upper end plug and the lower end plug and the inner wall of the cylinder are all sealed with a sealing ring and a retaining ring. 7 . The pressure-holding cabin structure according to claim 4 , wherein the sealing ring is a polyurethane sealing ring. 8 . 8 . The pressure-holding cabin structure according to claim 6 , wherein a medium channel connecting the inside of the cylinder is reserved on the upper end plug. 9 . 9. The pressure-holding cabin structure according to claim 5, 6 or 8, wherein a flap valve is installed in the cylinder, the flap valve comprises a valve seat and a valve disc, and the valve disc and the top of the valve seat Seal fit. 10 . The pressure-holding cabin structure according to claim 9 , wherein the flap valve is fixed in the cylinder by a spring and a mounting ring; the bottom surface of the valve seat is in contact with the lower end sealing device; 10 . The spring is compressed between the flap valve and the mounting ring. The inner wall of the cylinder has an inner step for abutting the mounting ring. The valve is placed on the valve disc to provide initial sealing pressure to the valve disc, and a sealing ring is arranged between the valve seat and the cylinder body.

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