KR101654217B1 - Apparatus and method for supplying and draining fluid from/to pressure vessel - Google Patents

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure vessel used for testing deep-sea equipment, and an apparatus and method for supplying and removing fluid from a pressure vessel. According to an embodiment of the present invention, there is provided an apparatus for supplying and removing fluid to and from a pressure vessel, comprising: a supply pump for supplying seawater to the fresh water generator; A water purifier for converting the seawater supplied from the supply pump into clean water; And a supply pipe for supplying the clear water from the water purifier to the pressure vessel, wherein the supply pump includes a filtering device for filtering the seawater.

Description

[0001] APPARATUS AND METHOD FOR SUPPLYING AND DRAINING FLUID FROM / TO PRESSURE VESSEL [0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pressure vessel used for testing deep-sea equipment, and an apparatus and method for supplying and removing fluid from a pressure vessel.

As the international phenomenon of industrialization and industry develops, the use of resources such as petroleum is gradually increasing, and thus the stable production and supply of oil is becoming a very important issue on a global scale.

For this reason, the development of the marginal field or deep-sea oil field, which had been neglected due to economic difficulties, has become economic in recent years. Therefore, along with the development of seabed mining technology, drilling rigs with drilling facilities suitable for the development of such oilfields have been developed.

Conventional submarine drilling has been mainly used as a fixed platform for drilling at one point in the offshore area. Recently, floating drilling facility capable of drilling in depths of 3,000m or more has been developed and used for deep sea drilling.

These drilling facilities are equipped with various drilling equipments such as derrick system, riser, drill string and so on to drill oil and gas existing under the sea floor.

In recent years, the development of deep-sea oil fields has been actively promoted, so safety of various drilling equipments is especially important. Among the drilling equipments, the most relevant equipment for drilling is BOP (Blow out Preventer, Prevention device).

BOP equipment is installed to prevent the gas explosion of submarine wells by safely removing high pressure gas generated during drilling process and connected to the upper wellhead of submarine oil well through a riser from marine drilling facility . These BOP equipment is designed to withstand a pressure of 15,000 psi in a high pressure environment above 3,000 m (4,300 psi) depth, suitable for deep sea environments.

Deep sea equipment used in deep water such as BOP equipment can be put into pressure vessel and tested. At this time, in order to test the deep sea equipment under conditions similar to the deep sea environment, the fluid which pressurizes the deep sea equipment should be supplied into the pressure vessel. And, after testing of the deep sea equipment, the fluid inside the pressure vessel should be removed.

According to the prior art, a separate fluid tank is provided to supply fluid into the pressure vessel, and the fluid stored in the fluid tank is supplied into the pressure vessel using a pump. Then, the fluid inside the pressure vessel is removed by using a pump. Therefore, the conventional technology has a disadvantage in that cost and space are wasted due to the fluid tank, and there is a limitation in removing the fluid completely in removing the fluid inside the pressure vessel.

Prior Art: Korean Patent No. 10-1185286 (registered on September 17, 2012)

It is an object of the present invention to provide an apparatus and a method for supplying and removing fluid to and from a pressure vessel which can reduce costs and increase space efficiency and which can eliminate the fluid completely when removing fluid inside the pressure vessel.

According to an aspect of the present invention, there is provided an apparatus for supplying and removing a fluid to a pressure vessel, the apparatus comprising: a supply pump for supplying seawater to a fresh water generator; A water purifier for converting the seawater supplied from the supply pump into clean water; And a supply pipe for supplying the clear water from the water purifier to the pressure vessel, wherein the supply pump includes a filtering device for filtering the seawater.

In particular, the supply pipe may be inclined from the water purifier to the pressure vessel.

In addition, the apparatus for supplying and removing the fluid to and from the pressure vessel may further include: a drain pump for transferring the fluid inside the pressure vessel to the purifier; And a purifier for purifying the fluid supplied from the drain pump.

Further, the apparatus for supplying and removing the fluid to and from the pressure vessel may further include a first drain pipe for transferring the fluid from the pressure vessel to the drain pump, and the first drain pipe may be formed of a flexible material .

The apparatus for supplying and removing fluid to and from the pressure vessel may further include a second drain pipe for discharging the fluid from the purifier, and the second drain pipe may be inclined.

The apparatus for supplying and removing fluid to and from the pressure vessel may further include a drain pipe attached to a lower portion of the pressure vessel to be inclined from a lower portion of the pressure vessel to discharge fluid from the pressure vessel.

According to another aspect of the present invention, there is provided a method of supplying and removing fluid from a pressure vessel, comprising: raising seawater; Filtering the seawater; And changing the seawater to fresh water in a water conditioner is provided.

In particular, a method for supplying and removing fluid to and from the pressure vessel may further include supplying the fresh water from the water generator to the pressure vessel through a supply pipe, wherein the supply pipe is inclined from the water generator to the pressure vessel Can be installed.

In addition, the method for supplying and removing fluid to and from the pressure vessel may include: transferring the fluid in the pressure vessel to the purifier through the first drain pipe; And purifying the fluid supplied from the drain pump in the purifier.

In addition, the first drain pipe may be formed of a flexible material.

In addition, the method for supplying and removing fluid from the pressure vessel may further include discharging the fluid from the purifier through a second drain pipe, and the second drain pipe may be inclined.

The method of supplying and removing fluid to and from the pressure vessel may further include discharging fluid from the pressure vessel through a drain pipe attached to the lower portion of the pressure vessel and inclined from the lower portion of the pressure vessel.

According to the embodiment of the present invention, since the fluid is supplied to the pressure vessel by using seawater and a separate fluid tank is not used, the cost can be reduced and the space efficiency can be improved, and the supply pump for supplying the fluid to the pressure vessel A filtering device may be provided to prevent the dirt contained in seawater from entering the pressure vessel.

Then, the seawater is replaced with fresh water by using a fresh water generator and supplied to the pressure vessel, thereby preventing corrosion of the pressure vessel.

Further, the fluid can be completely removed using a flexible drain pipe, and a purification device can be provided to prevent environmental pollution.

1 is a view showing an example of an apparatus for supplying and removing a fluid to and from a pressure vessel according to an embodiment of the present invention.
2 is a view showing another example of an apparatus for removing fluid from a pressure vessel according to an embodiment of the present invention.
3 is a view showing a method of supplying and removing a fluid to and from a pressure vessel according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the drawings, the same reference numerals are used to designate the same or similar components throughout the drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

1 and 2, an apparatus for supplying and removing fluid to and from a pressure vessel according to an embodiment of the present invention will be described. 1 is a view showing an example of an apparatus for supplying and removing a fluid to and from a pressure vessel according to an embodiment of the present invention.

As shown in FIG. 1, an apparatus for supplying and removing fluid to and from a pressure vessel according to an embodiment of the present invention is a system for supplying and removing fluid to and from a pressure vessel 180. Therefore, first, the pressure vessel 180 will be described.

The pressure vessel 180 is a device capable of performing various types of tests by exposing the drilling equipment used in a deep sea environment to an environmental condition similar to a deep sea environment. The pressure vessel 180 is made to withstand a high pressure of 300 bar or more.

A test chamber is formed in the inner space of the pressure vessel 180 so that the equipment to be tested can be inserted therein. The fluid is stored in the test chamber so that the equipment to be tested is locked. At this time, the equipment to be tested is equipment used in a deep sea environment, for example, a BOP equipment that is latched to the upper well head of a subsea well to prevent internal gas explosion of the subsea well.

The pressure vessel 180 may be formed in the form of a container having various shapes in which a test chamber C is formed. It is preferable that the pressure vessel 180 is formed in a cylindrical shape in consideration of the supporting strength against the internal pressure of the pressure vessel 180 .

The pressure vessel 180 may be provided with an external pressure supply port 181 and an internal pressure supply port 182. Pressure may be supplied from the external pressure supply unit to the fluid inside the pressure vessel 180 through the external pressure supply port 181 and may be supplied from the internal pressure supply unit through the pressure supply port 182 to the test equipment inside the pressure vessel 180 Pressure can be provided.

The external pressure supply unit can raise the pressure of the fluid so that the pressure of the fluid stored in the test chamber of the pressure vessel 180 reaches a pressure of, for example, 300 bar or more.

The internal pressure supply unit is configured to supply the high-pressure fluid so that the inner pressure of the equipment to be tested inside the pressure vessel 180 is so high that the inner pressure of the inner space of the pressure vessel 180 reaches a pressure occurring at the time of gas explosion, for example, 1000 bar .

The pressure vessel 180 may be disposed on the shore, and may be partially or completely embedded on the land as shown in Fig. 1 or fixed or mounted on a separate land structure, although not shown.

Next, an apparatus for supplying and removing fluid to and from a pressure vessel according to an embodiment of the present invention will be described. 1, an apparatus for supplying and removing fluid to and from a pressure vessel according to an embodiment of the present invention includes a supply pump 110, a water injector 120, a supply pipe 130, a first drain pipe (not shown) 140, a drain pump 150, a purifier 160, and a second drain pipe 170.

The supply pump 110, the water purifier 120 and the supply pipe 130 serve to supply the fluid to the pressure vessel 180.

The supply pump 110 lifts the seawater and supplies it to the water purifier 120. As shown in FIG. 1, the pressure vessel 180 and the apparatus for supplying and removing the fluid to and from the pressure vessel are installed near the sea, and the supply pump 110 can supply the seawater to the water generator 120.

The feed pump 110 may include a filtering device for filtering seawater. The filtering device is provided inside the supply pump 110 to filter the dirt contained in the seawater to prevent the dirt from flowing into the pressure vessel 180.

The water generator 120 is a device for heating seawater having high salinity to remove salt and other substances and evaporate to obtain pure water, i.e. fresh water. Since the pressure vessel 180 is generally made of a metal material, when the seawater is supplied into the pressure vessel 180, the pressure vessel 180 may be corroded. Therefore, it is possible to prevent the pressure vessel 180 from being corroded by changing the seawater to fresh water using the water purifier 120 and supplying it to the pressure vessel 180.

The supply pipe 130 is installed between the water purifier 120 and the pressure vessel 180 to supply the fresh water of the water generator 120 to the pressure vessel 180. 1, the supply pipe 130 may be inclined from the water purifier 120 toward the pressure vessel 180 so that the fluid can smoothly flow from the water purifier 120 to the pressure vessel 180.

The first drain pipe 140, the drain pump 150, the purifier 160 and the second drain pipe 170 serve to remove the fluid inside the pressure vessel 180.

The first drain pipe 140 is installed between the pressure vessel 280 and the drain pump 150 so that the fluid in the pressure vessel 280 is transferred to the drain pump 150 through the first drain pipe 140 do. The first drain pipe 140 may be formed of a flexible material so as to efficiently discharge the fluid inside the pressure vessel 180. That is, the first drain pipe 140 may be flexible and may be formed so as to discharge the fluid in the corner of the pressure vessel 180.

The drain pump 150 draws the fluid inside the pressure vessel 180 through the first drain pipe 140 and transfers it to the purifier 160.

The purifier 160 purifies the fluid drained from the pressure vessel 180. The fluid used in the pressure vessel 180 is purified through the purifier 160 and discharged to the outside, thereby preventing environmental pollution.

The second drain pipe 170 is a pipe connected to the outside from the purifier 160 and discharges the fluid from the purifier 160. The second drain pipe 170 may be inclined so that the fluid can be smoothly discharged as shown in FIG.

Next, another example of an apparatus for removing fluid from a pressure vessel according to an embodiment of the present invention will be described with reference to Fig. 2 is a view showing another example of an apparatus for removing fluid from a pressure vessel according to an embodiment of the present invention.

2 shows only a device for removing fluid from the pressure vessel 180, it may be provided with a device for supplying fluid to the pressure vessel 180 described in FIG.

As shown in FIG. 2, the apparatus for removing fluid from the pressure vessel 180 according to the embodiment of the present invention includes a drain pipe 210. The drain pipe 210 discharges the fluid in the pressure vessel 180 to the outside. The drain pipe 210 may be attached to the lower portion of the pressure vessel 180 and may be installed to be inclined from the lower portion of the pressure vessel 180.

The drain pipe 210 can be designed to withstand high pressures so that the pressurized fluid can flow. Since the fluid in the pressure vessel 180 is a pressurized fluid, a pressure difference is generated between the fluid inside the pressure vessel 180 and the outside, so that the fluid in the pressure vessel 180 is efficiently discharged through the drain pipe 210 .

Next, a method of supplying and removing fluid to and from a pressure vessel according to an embodiment of the present invention will be described with reference to FIG. 3 is a view showing a method of supplying and removing a fluid to and from a pressure vessel according to an embodiment of the present invention.

As shown in FIG. 3, the supply pump 110 lifts the seawater (S310), and the seawater is filtered to remove the foreign substances contained in the seawater (S320). Then, the water generator 120 converts the seawater into fresh water (S330), and introduces fresh water into the pressure vessel 180 through the supply pipe 130 (S340).

In order to discharge the fluid inside the pressure vessel 180, the drain pump 150 delivers the fluid inside the pressure vessel 180 to the purification apparatus 160 through the first drain pipe 140 (S350) . The purifier 160 purifies the fluid (S360) and drains the purified water through the second drain pipe 140 (S370).

Alternatively, the fluid inside the pressure vessel 180 may be discharged using the drain pipe 210 of FIG. 2 (S380).

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

110: Supply pump
120:
130: Supply pipe
140: First drainage pipe
150: Drain pump
160: purifier
170: Second drainage pipe

Claims (12)

An apparatus for supplying and removing fluid to and from a pressure vessel,
A supply pump for supplying seawater to the fresh water generator;
A water purifier for converting the seawater supplied from the supply pump into clean water; And
And a supply pipe for supplying the fresh water from the water purifier to the pressure vessel,
Wherein the supply pump comprises a filtering device for filtering the seawater,
The pressure vessel is a device for performing a test by exposing a drilling equipment used in a deep sea environment to an environmental condition similar to a deep sea environment,
A test chamber in which the equipment to be tested can be injected into the pressure vessel; And
Further comprising: a pressure supply port providing the clean water to the test chamber through the supply pipe and providing pressure to the clean water or test equipment. The method according to claim 1,
Wherein the supply pipe is provided to be inclined from the water generator to the pressure vessel. The method according to claim 1,
A drain pump for transferring the fluid inside the pressure vessel to the purifier; And
Further comprising a purifier for purifying the fluid supplied from the drain pump. The method of claim 3,
Further comprising a first drain pipe for transferring the fluid from the pressure vessel to the drain pump, wherein the first drain pipe is formed of a flexible material. The method of claim 3,
Further comprising a second drain pipe for discharging the fluid from the purifier, wherein the second drain pipe is obliquely installed. The method according to claim 1,
And a drain pipe attached to a lower portion of the pressure vessel to be inclined from a lower portion of the pressure vessel to discharge the fluid in the pressure vessel. A method for supplying and removing fluid from a pressure vessel,
Raising seawater;
Filtering the seawater;
Changing the seawater to fresh water in the water generator; And
Supplying the fresh water from the water purifier to the pressure vessel through a supply pipe,
The test equipment was put into the pressure vessel,
Providing pressure to the fresh water or the test equipment supplied to the pressure vessel; And
And exposing the test equipment to deep sea environmental conditions to perform a test. The method of claim 7,
Wherein the supply pipe is installed to be inclined from the reservoir to the pressure vessel. The method of claim 8,
Transferring the fluid in the pressure vessel to the purifier through the first drain pipe; And
Further comprising purifying the fluid supplied through the first drain pipe in the purifier. The method of claim 9,
Wherein the first drain pipe is formed of a flexible material. The method of claim 9,
Further comprising discharging the fluid from the purifier through a second drain pipe, wherein the second drain pipe is obliquely installed. The method of claim 8,
And discharging the fluid in the pressure vessel through a drain pipe attached to the lower portion of the pressure vessel and installed at an inclination from the lower portion of the pressure vessel.

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