CN2818931Y - High-pressure container - Google Patents

Abstract

The utility model relates to a high-pressure container, which includes a container end cover that can be quickly opened. The end cover is provided with a hydraulic cylinder and a pre-compression cylinder controlled by a pressure control mechanism, wherein the hydraulic cylinder communicates with the container through a pipeline; the hydraulic cylinder and the pre-compression cylinder are also fixed on the upper beam plate, and the plate The surrounding is supported by at least three uprights, and all uprights are also fixed on the base, and a dolly for loading the container is movably arranged on the base. The quick-opening container end cap of the present invention can make the hydraulic cylinder and the container stable and rapid in the pressure relief process, and generally the container can complete the pressure relief process in 10-20 seconds. It is especially suitable for the synthesis of natural gas hydrate in the laboratory. It takes 10-20 seconds to complete the pressure relief. After the pressure is reduced, the hydrate can be taken out as soon as possible so that the hydrate will not decompose. In these occasions, this practical quick-open container The end caps do the job perfectly.

Description

high pressure vessel

technical field

The utility model relates to deep-sea exploration, deep-sea simulation experiments, and improvement of deep-sea observation equipment. Specifically, it is a high-pressure container quick-opening device. The high-pressure container can be opened quickly and conveniently. field.

Background technique

In the ocean, the seawater has a certain pressure, especially in the deep sea, for example, in the deep sea of 6000 meters, the water pressure can reach 60Mpa. At present, in the design field of high-pressure vessels, the sealing of high-pressure vessels is a key issue. The main difficulty in the sealing of high-pressure vessels lies in the need to solve the problem of the huge axial force generated on the vessel end cap caused by high pressure, for example: For a container with a diameter of 260mm, the working pressure is 40MPa, and the axial force F=3.1415926/4*D ² *P=2122640N acting on the end cap is about 212 tons. Commonly used sealing forms mainly include flat gasket seals, O-ring seals, double cone seals, Wood seals, Kazali seals, etc., see "National Standard of the People's Republic of China Steel Pressure Vessels GB150-1998". Among them, with the increase of the internal pressure of the container, the pressure between the end cover and the high-pressure container cylinder decreases in the first three schemes, which belong to the non-axial self-tightening sealing method; the latter two schemes are with the increase of the internal pressure of the container. The pressure between the end cover and the cylinder of the high-pressure vessel increases, which belongs to the axial self-tightening sealing method. The first three sealing methods generally use the pre-tightening force of the bolts to balance the axial force generated by the high pressure. When opening, all the bolts must be loosened. However, it takes a lot of time to loosen multiple thicker bolts, and the opening is very slow. Wood seal adopts a groove on the cylinder wall, and a four-way ring is placed in the groove, and the four-way ring is used to block the upper end cover placed under it, and the axial force is borne by the four-way ring and the groove on the cylinder wall. It is more complicated, and it is very troublesome to use this scheme to open the operation. With the Wood seal method, it is necessary to loosen many relatively small bolts, as well as parts such as the quad ring that are more difficult to take out. The opening is also very slow, and it takes about one to loosen. It generally takes about 30-60 minutes for a pressure vessel with a diameter of 260mm. The Kazali seal uses external threads processed on the outside of the end cap and the cylinder, and then a sleeve with internal threads is processed on the outside. This structure requires high processing accuracy, which is difficult to process and complicated to open. , it is not very convenient to use. At present, these commonly used sealing methods are more suitable for applications where the number of openings is not too frequent, but it is not very convenient and very tiring to open high-pressure vessels frequently. For example, in the pressure test of deep-sea instruments, each instrument or component needs to be opened once. Using these sealing methods makes the operation very laborious. In some occasions that require a faster opening speed, such as: using a high-pressure container in the laboratory to synthesize Natural gas water and matter, natural gas water and matter must be taken out after synthesis, and natural gas water and matter will decompose if not taken out as soon as possible after the high-pressure vessel is depressurized.

Contents of the invention

The purpose of the utility model is to provide a high-pressure container with a quick-opening end cover, so as to be suitable for frequent opening of the high-pressure container.

The task of the utility model is accomplished by the following technical solutions, and a high-pressure container has been developed, which includes a container end cap that can be opened quickly. The end cover is provided with a hydraulic cylinder and a pre-compression cylinder controlled by a pressure control mechanism, wherein the hydraulic cylinder communicates with the container through a pipeline; the hydraulic cylinder and the pre-compression cylinder are fixed on the upper beam plate, and the surrounding of the plate Supported by at least three uprights, all uprights are also fixed on the base, and a dolly for loading the container is movably arranged on the base.

As for the hydraulic cylinders, at least three hydraulic cylinders are arranged on the end cover, and the sum of the piston areas of the cylinders matches the cross-sectional area of the container.

The outer end of the piston rod of the pre-compression cylinder is fixedly arranged on the end cover, and the pre-compression oil cylinder always provides the power to open the end cover or the pre-tightening force to press on the end cover.

The high-pressure vessel and the end cap are either sealed with an O-ring, or with a flat gasket, or with a double-cone sealing structure.

The utility model has the advantages that: because the high-pressure container includes a quick-opening container end cover, a hydraulic cylinder and a pre-pressing cylinder controlled by a pressure control mechanism are arranged on it, wherein the hydraulic cylinder communicates with the container through a pipeline, The pressure in the hydraulic cylinder and the container is kept consistent by the pressure control device, or in some occasions, a pipeline is used to directly communicate the hydraulic cylinder with the container to ensure that the pressure remains consistent. Since at least three hydraulic cylinders are arranged on the end cover, the sum of the piston areas of all hydraulic cylinders matches the cross-sectional area of the container. and may be slightly larger than the cross-sectional area of the container to maintain a positive interaction force between the end cap and the container at all times. Therefore, the axial force acting on the end cover due to the high pressure in the high pressure vessel can be balanced by the hydraulic cylinders. The pre-compression cylinder fixed on the upper beam plate can provide the power to open the end cover and the pre-tightening force to compress the container end cover. Since the upper beam plate is supported by at least three columns, all the columns are also fixed on the base, and a dolly for loading the container is movably arranged on the base. The trolley can move on the base, and is used to release the pressure of the high-pressure vessel and lift the end cover by the pre-press cylinder, then pull out the container to the outside of the end cover, put the experimental materials into the container, and then put the container By loading the trolley, push the container under the end cover and start the pre-press cylinder to generate the pre-tightening force required for sealing. Since the pressure of the hydraulic cylinder and the container is always consistent, the hydraulic cylinder and the container have stability and rapid pressure relief during the pressure relief process. Generally, the container can complete the pressure relief process in 10-20 seconds. Moreover, since the production of high-pressure hydraulic cylinders has been serialized, the cost of using high-pressure hydraulic cylinders to balance the axial force is also relatively low.

Accompanying drawing and specific embodiment thereof

Embodiments of the utility model are further described as follows in conjunction with the accompanying drawings:

Figure 1 is a schematic diagram of the front view of a high-pressure vessel and its quick-opening end cap.

Figure 2 is a top view of the structure of the high pressure vessel.

Referring to Fig. 1, Fig. 2 shows a high-pressure container made, which includes a quick-open container end cap 5. The end cover 5 is provided with a hydraulic cylinder 3 and a pre-compression cylinder 4 controlled by a pressure control mechanism 9, wherein the pressure control mechanism 9 communicates with the hydraulic cylinder 3 and the container 6 through a pipeline; the hydraulic cylinder 3 and the pre-compression cylinder 4 is also fixed on the upper beam plate 1, which is supported by three columns 2 at least around the plate 1, and all columns 2 are also fixed on the base 8, and the dolly 7 of loading the container 6 is movably set on the base 8.

Described hydraulic cylinder 3, it is arranged on four hydraulic cylinders 3 on this end cover 5, and the sum of the piston area of all cylinders 3 matches with the cross-sectional area of this container 6.

The said pre-compression cylinder 4, the outer end of the piston rod is fixed on the end cover 5, and the pre-compression cylinder 4 always provides the power to open the end cover 5 or the pre-tightening force pressed on the end cover 5 .

The high-pressure vessel 6 and the end cap 5 are either sealed with an O-ring, or sealed with a flat gasket, or sealed with a double-cone structure.

The high-pressure container of the utility model is specifically applied in the laboratory synthetic natural gas hydrate experiment, and its operation process is as follows:

First, pull out the high-pressure container 6 to the outer position of the container end cap 5, then put the experimental material into the container 6, then push the high-pressure container 6 directly below the end cap 5, and start the pre-compression cylinder 4 The pre-tightening force required to press down the end cap 5 and seal it on the port of the container 6 is provided by the pre-compression cylinder 4 . While the pre-compression cylinder 4 is pressurized, the pressures of the hydraulic cylinder 3 and the container 6 increase synchronously, and the two cancel each other out. The pressure between the end cap 5 and the container 6 is always maintained as the pre-tightening force generated by the pre-compression cylinder 4 .

When the container end cover 5 is opened, the pressure of the hydraulic cylinder 3 and the container 6 is released synchronously to reduce the pressure, and the pressure release time is shorter. Generally, the container can complete the pressure relief process in 10-20 seconds. When the container 6 is under normal pressure, the pre-pressurization cylinder 4 releases the pressure and moves upward in the opposite direction to lift the end cover 5. After the pressure is released, the pre-pressurization cylinder 4 drives the end cover 5 to move up a small distance to make the end cover When the cover 5 is out of contact with the high-pressure container, the container below can be pulled out. The entire operation time is very short, no more than 2 minutes at most, which realizes the rapid opening of the high-pressure container and the natural gas hydrate produced as soon as possible to avoid decomposition of the hydrate the goal of.

Those skilled in the art will understand that within the protection scope of the present utility model, it is possible to modify, add and replace the above-mentioned embodiments, which do not exceed the protection scope of the present utility model.

Claims (4)

1, a kind of high-pressure bottle, the container end that it comprises quick unlatching is characterized in that: described this end cap is provided with oil hydraulic cylinder and the precompression cylinder by pressure control mechanism control, wherein is communicated with pressure by pipeline between oil hydraulic cylinder and this container and is consistent; Oil hydraulic cylinder and precompression cylinder also are fixed on the upper beam dish, are supported by three root posts at least around this dish, and all columns also are fixed on the base, the movable dolly that loads this container that is provided with on base.

2, according to the described high-pressure bottle of claim 1, it is characterized in that: described oil hydraulic cylinder, it is arranged on three oil hydraulic cylinders on this end cap at least, and the piston area sum of all cylinders and the cross-section area of this container are complementary.

3, according to the described high-pressure bottle of claim 1, it is characterized in that: described precompression cylinder, its piston rod outer end is fixedly installed on this end cap, and this prefabricating oil cylinder is the power of opening end cap to be provided all the time or to be pressed on pretightening force on this end cap.

4, according to the described high-pressure bottle of claim 1, it is characterized in that: between the described high-pressure bottle, itself and this end cap or adopt the sealing of O type circle, or the plain cushion sealing, or adopt the seal with double-cone structure.

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