CN108319304B - Annular deep sea pressure compensator - Google Patents
Annular deep sea pressure compensator Download PDFInfo
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- CN108319304B CN108319304B CN201810058727.3A CN201810058727A CN108319304B CN 108319304 B CN108319304 B CN 108319304B CN 201810058727 A CN201810058727 A CN 201810058727A CN 108319304 B CN108319304 B CN 108319304B
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- compensator
- annular
- outer shell
- pipe
- deep sea
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D16/00—Control of fluid pressure
- G05D16/04—Control of fluid pressure without auxiliary power
- G05D16/06—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule
- G05D16/0616—Control of fluid pressure without auxiliary power the sensing element being a flexible membrane, yielding to pressure, e.g. diaphragm, bellows, capsule the sensing element being a bellow
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Abstract
The invention relates to an annular deep sea pressure compensator, which is characterized in that: the compensator comprises an annular corrugated pipe, an annular outer shell of the compensator and an elbow pipe; the annular corrugated pipe is arranged in the annular outer shell of the compensator, the elbow pipe is arranged on the inner circumference of the annular outer shell of the compensator and is connected with a using device through the elbow pipe; the compensator annularly surrounds the using equipment, and the inner space of the compensator is communicated with the inner space of the shell of the using equipment and is filled with compensating oil. The invention reduces the longitudinal height dimension of the equipment as much as possible under the condition of ensuring the sufficient compensation amount, and simultaneously, the shell of the invention plays a role in protecting the compensator rigidly or preventing corrosion.
Description
Technical Field
The invention relates to a pressure compensator, in particular to an annular deep sea pressure compensator for performing pressure compensation on the interior of a sealing shell of underwater equipment in the field of underwater production operation equipment.
Background
The basic structure of the underwater operation production equipment is that the equipment is arranged in a sealed shell, and insulating oil is filled between the equipment and the shell. Underwater production equipment needs to bear the pressure and heat of seawater simultaneously during the working process in deep sea. It works on the deep sea bottom and bears the pressure of the sea water. Equipment losses are dissipated outwards in the form of heat, and therefore subsea production equipment is also subjected to the heat. While the equipment is subjected to different working states, the insulating oil in the sealing shell can expand with heat and contract with cold along with the temperature change. If the insulating oil in the underwater equipment shell is infiltrated by seawater, the equipment can be failed. Thus, normal and reliable operation of the subsea equipment under pressure and heat should be ensured, except in special cases.
The pressure compensator is one of main devices for ensuring that required pressure difference values exist inside and outside the underwater equipment and ensuring the normal operation of the underwater equipment. In brief, the pressure compensator is an elastic element and can play two roles of pressure compensation and volume compensation simultaneously on underwater operation production equipment. The pressure compensator mainly has the following modes: accumulator, piston, rolling diaphragm, and bellows. The working principles of the several pressure compensators are essentially the same, and the implementation methods or structures of the rigidity and the volume change are different, so that the working characteristics, the application range, the measures needed to be taken in the specific implementation and the like of the different types of pressure compensators are different.
The main element in the accumulator type pressure compensator is a leather bag which plays a role of elasticity. The inlet of the leather bag is connected with the insulating oil of the box body, and the outside of the leather bag is contacted with seawater. When the volume of the oil liquid changes, the compensator realizes volume compensation by means of the deformation of the leather bag, so that the pressure inside and outside the leather bag is consistent. Because the underwater operation production equipment works in seawater for a long time, the two problems of the aging of the rubber bag and the corrosion of other parts exist. Besides the capsule, other parts of the energy accumulator are more, so that the problem of corrosion resistance is more complicated.
One side of two ends of a piston of the piston type pressure compensator is communicated with compensation oil, and the other side of the two ends of the piston is communicated with seawater. The spring acting on the piston has a pressure compensation effect, and the movement of the piston under the action of the pressure difference has a volume compensation effect. In the oil volume compensation process, the compensation spring is subjected to alternating action, so that the problems of fatigue life and corrosion exist; the piston and the inner wall of the piston cylinder move relatively and repeatedly, so that the problems of abrasion and corrosion exist, and impurities in seawater easily cause abrasion or movement blockage of a relatively moving surface. The problems of corrosion, abrasion and blocking are solved by using the piston type pressure compensator, and the practicability in the marine environment has certain difficulty.
The main elements of the rolling diaphragm type pressure compensator are a rolling diaphragm and a spring, and the number of the components is large. One side of the rolling membrane is connected with insulating oil, and the other side is communicated with seawater. The spring acts as a pressure compensation, and the change in pressure differential causes the piston to displace to compensate for the change in volume. Similar to the accumulator-type pressure compensator, there are problems of rubber aging and corrosion of other metal parts.
The main element of a bellows pressure compensator is the bellows, which simultaneously serves for pressure and volume compensation. Compared with the former pressure compensators, the bellows pressure compensator has fewer elements, is easy to be processed and manufactured by adopting seawater corrosion resistant materials, and has obvious advantages in the aspects of solving corrosion resistance, avoiding maintenance and prolonging service life.
The existing underwater operation production equipment mainly performs pressure compensation on a main body of the equipment through an external pressure compensator. In view of the prior art, the bellows used for pressure and volume compensation in underwater production equipment is suitable for working in a compressed state due to the high compression ratio of the bellows, and has the advantages of low rigidity and long service life, so when the water depth is large, the bellows type pressure compensator is generally used. When the volume of the equipment is larger, the required compensation amount is increased, so the number of the required pressure compensators is increased, and a series of problems of complex structure, difficult maintenance, higher manufacturing cost and the like of the whole production equipment are caused.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an annular deep sea pressure compensator, which can effectively increase the compensation amount of the compensator, avoid the compensator increasing the overall height of the used equipment, reduce the longitudinal height dimension of the equipment, and lower the center of gravity.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an annular deep sea pressure compensator which characterized in that: the compensator comprises an annular corrugated pipe, an annular outer shell of the compensator and an elbow pipe; the annular corrugated pipe is arranged in the annular outer shell of the compensator, the elbow pipe is arranged on the inner circumference of the annular outer shell of the compensator and is connected with a using device through the elbow pipe; the compensator annularly surrounds the using equipment, and the inner space of the compensator is communicated with the inner space of the shell of the using equipment and is filled with compensating oil.
Furthermore, the annular outer shell of the compensator is composed of an upper half shell and a lower half shell, and flanges convenient to weld are arranged on two sides of the upper half shell and the lower half shell.
Furthermore, four connecting pipes are arranged on the inner side of the circular corrugated pipe.
Further, compensator annular shell body inboard be provided with four pipes that four connecting pipes correspond, four pipes are located respectively the outside of four connecting pipes, the pipe pass through the ring flange with elbow pipe one end is connected, the elbow pipe other end with the welding of user equipment installation interface.
Furthermore, a corrugated pipe welded with the connecting pipe is arranged in the elbow pipe.
Furthermore, a plurality of through holes are formed in the bottom of the annular outer shell of the compensator.
Furthermore, the annular outer shell of the compensator and the annular corrugated pipe are filled with oil, a plurality of vertical corrugated pipes communicated with the annular outer shell of the compensator are arranged at the bottom of the annular outer shell of the compensator, and vertical round pipes with guiding functions are sleeved outside the vertical corrugated pipes.
Further, the bottom of each vertical corrugated pipe is provided with a knob.
Due to the adoption of the technical scheme, the invention has the following advantages: 1. the annular corrugated pipe compensator comprises an annular corrugated pipe, an annular compensator outer shell and an elbow pipe. The annular corrugated pipe compensator surrounds the periphery of the used equipment shell, and the length of the corrugated pipe compensator is increased under the condition of occupying limited height, so that the compensation amount of the compensator is increased. Meanwhile, the integral height of the used equipment increased by the compensator is avoided, so that the longitudinal height of the equipment is reduced, and the gravity center is lowered. 2. The internal space of the compensator is communicated with the inside of the shell of the using equipment and is filled with the compensating oil, and when the seawater pressure changes or the internal temperature of the using equipment changes, the corrugated pipe compensator can stretch and contract, so that the pressure change caused by the volume change of the oil liquid is compensated, and the internal pressure of the equipment is kept consistent with the external seawater pressure.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1;
FIG. 3 is a schematic view of the annular bellows structure of the present invention;
FIG. 4 is a schematic view of the annular outer casing structure of the compensator of the present invention;
FIG. 5 is a schematic view of the elbow pipe construction of the present invention;
FIG. 6 is a schematic view of the bellows configuration within the elbow pipe of the present invention;
FIG. 7 is a schematic structural view of an annular outer casing of the compensator with a plurality of through holes at the bottom of the annular outer casing;
FIG. 8 is a schematic diagram of the annular outer shell of the compensator with a plurality of small bellows connected to the bottom of the annular outer shell.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1 to 4, the present invention provides an annular deep sea pressure compensator, which comprises an annular corrugated pipe 1, an annular outer shell 2 of the compensator and an elbow pipe 3; the elbow pipe 3 adopts a 90-degree elbow pipe. The annular corrugated pipe 1 is arranged in the annular compensator outer shell 2, the elbow pipe 3 is arranged on the inner side circumference of the annular compensator outer shell 2, and the annular corrugated pipe is connected with a user device through the elbow pipe 3. Wherein, the compensator is in a ring shape (as shown in fig. 3) and surrounds the using device, and the inner space of the compensator is communicated with the inner space of the shell of the using device and is filled with compensating oil. Through the annular corrugated pipe 1, the length and the compensation amount of the compensator can be increased, the height of used equipment is reduced, the center of gravity is reduced, the compensator is more stable underwater, the structure is simplified, and the manufacturing cost is reduced. When the device is used, when the seawater pressure changes or the internal temperature of production equipment changes, the corrugated pipe compensator can stretch, so that the pressure change caused by the volume change of oil is compensated, and the internal pressure of the equipment is consistent with the external seawater pressure.
In the above embodiment, four connecting pipes 4 are provided inside the circular corrugated pipe 1, and are used for communicating the circular corrugated pipe 1 with the elbow pipe 3.
In the above embodiments, as shown in fig. 4, the annular compensator outer casing 2 is composed of an upper half casing and a lower half casing, and flanges are provided on both sides of the upper half casing and the lower half casing, so as to facilitate welding of the upper half casing and the lower half casing. Four circular tubes 5 corresponding to the four connecting tubes 4 are arranged on the inner side of the annular shell 2 of the compensator, the four circular tubes 5 are respectively positioned outside the four connecting tubes 4, the circular tubes 5 are connected with one end of an elbow tube 3 through a flange plate, and the other end of the elbow tube 3 is welded with a mounting interface of a using device; the elbow pipe 3 is adopted, so that the installation and the sealing of the circular corrugated pipe 1 and the using equipment are facilitated.
In the above embodiments, as shown in fig. 5 and 6, the bellows 6 welded to the connection pipe 4 is disposed in the elbow pipe 3, and the length of the bellows is capable of expanding and contracting, so as to compensate for the deformation of the annular bellows 1 and ensure the sealing.
In the above embodiments, as shown in fig. 7, a plurality of through holes 7 are formed at the bottom of the lower half shell of the annular outer shell 2 of the compensator, so that the annular outer shell 2 of the compensator is communicated with the annular corrugated pipe 1 to communicate with seawater, thereby achieving the rigid protection of the annular corrugated pipe 1; meanwhile, the sediment is prevented from accumulating or blocking in the annular outer shell 2 of the compensator due to more sediment in the seawater.
In the above embodiments, as shown in fig. 8, oil is filled between the annular outer casing 2 of the compensator and the annular corrugated pipe 1, so as to prevent seawater from contacting the annular corrugated pipe 1 to corrode the compensator, and achieve the purpose of rigid protection. Meanwhile, the bottom of the annular outer shell 2 of the compensator is provided with a plurality of vertical corrugated pipes 8 communicated with the annular outer shell 2 of the compensator for compensating the oil pressure of the part, and vertical round pipes 9 are sleeved outside the vertical corrugated pipes 8 to play a role in guiding.
In a preferred embodiment, a knob 10 is provided at the bottom of each vertical bellows 8 for unscrewing the compensator annular outer housing 2 and the annular bellows 1 to fill the inner space with the compensation oil.
The above embodiments are only for illustrating the present invention, and the structure, size, arrangement position and shape of each component can be changed, and on the basis of the technical scheme of the present invention, the improvement and equivalent transformation of the individual components according to the principle of the present invention should not be excluded from the protection scope of the present invention.
Claims (7)
1. The utility model provides an annular deep sea pressure compensator which characterized in that: the compensator comprises an annular corrugated pipe, an annular outer shell of the compensator and an elbow pipe; the annular corrugated pipe is arranged in the annular outer shell of the compensator, the elbow pipe is arranged on the inner circumference of the annular outer shell of the compensator and is connected with a using device through the elbow pipe; the compensator annularly surrounds the using equipment, and the inner space of the compensator is communicated with the inner space of the shell of the using equipment and is filled with compensating oil;
the annular outer shell body of the compensator and the annular corrugated pipe are filled with oil, a plurality of vertical corrugated pipes communicated with the annular outer shell body of the compensator are arranged at the bottom of the annular outer shell body of the compensator, and vertical round pipes with guiding functions are sleeved outside the vertical corrugated pipes.
2. The annular deep sea pressure compensator of claim 1, wherein: the annular outer shell of the compensator is composed of an upper half shell and a lower half shell, and two sides of the upper half shell and the lower half shell are provided with flanges convenient to weld.
3. The annular deep sea pressure compensator of claim 1, wherein: four connecting pipes are arranged on the inner side of the circular corrugated pipe.
4. The annular deep sea pressure compensator of claim 3, wherein: the annular shell body of the compensator is internally provided with four round pipes corresponding to the four connecting pipes, the four round pipes are respectively positioned outside the four connecting pipes, the round pipes are connected with one end of the elbow pipe through flange plates, and the other end of the elbow pipe is welded with the using equipment installation interface.
5. The annular deep sea pressure compensator of claim 3 or 4, wherein: and a corrugated pipe welded with the connecting pipe is arranged in the elbow pipe.
6. The annular deep sea pressure compensator of claim 1 or 2, wherein: the bottom of the annular outer shell of the compensator is provided with a plurality of through holes.
7. The annular deep sea pressure compensator of claim 1, wherein: and the bottom of each vertical corrugated pipe is provided with a knob.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810058727.3A CN108319304B (en) | 2018-01-22 | 2018-01-22 | Annular deep sea pressure compensator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810058727.3A CN108319304B (en) | 2018-01-22 | 2018-01-22 | Annular deep sea pressure compensator |
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| Publication Number | Publication Date |
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| CN108319304A CN108319304A (en) | 2018-07-24 |
| CN108319304B true CN108319304B (en) | 2020-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810058727.3A Active CN108319304B (en) | 2018-01-22 | 2018-01-22 | Annular deep sea pressure compensator |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3412568A (en) * | 1966-06-10 | 1968-11-26 | Max Planck Gesellschaft | Pressure regulator for bath cryostats |
| CN2532349Y (en) * | 2002-01-15 | 2003-01-22 | 史玉芳 | O-shape compensator for pipeline |
| CN102678680A (en) * | 2012-05-15 | 2012-09-19 | 哈尔滨工程大学 | Large-capacity hydraulic compensation unit with constant compensation pressure allowance |
| CN202708445U (en) * | 2012-08-07 | 2013-01-30 | 宣伯民 | Pipeline circular compensator |
| CN203927223U (en) * | 2014-05-14 | 2014-11-05 | 安徽盛华管业有限公司 | Corrugated expansion joint |
| CN106920640A (en) * | 2017-04-16 | 2017-07-04 | 中国海洋大学 | A kind of transformer under water |
| CN107369523A (en) * | 2017-08-30 | 2017-11-21 | 华中科技大学 | A kind of underwater transformer of Natural Heat Convection formula |
| CN108305746A (en) * | 2018-01-22 | 2018-07-20 | 中国海洋石油集团有限公司 | A kind of compensation underwater transformer of annular |
-
2018
- 2018-01-22 CN CN201810058727.3A patent/CN108319304B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3412568A (en) * | 1966-06-10 | 1968-11-26 | Max Planck Gesellschaft | Pressure regulator for bath cryostats |
| CN2532349Y (en) * | 2002-01-15 | 2003-01-22 | 史玉芳 | O-shape compensator for pipeline |
| CN102678680A (en) * | 2012-05-15 | 2012-09-19 | 哈尔滨工程大学 | Large-capacity hydraulic compensation unit with constant compensation pressure allowance |
| CN202708445U (en) * | 2012-08-07 | 2013-01-30 | 宣伯民 | Pipeline circular compensator |
| CN203927223U (en) * | 2014-05-14 | 2014-11-05 | 安徽盛华管业有限公司 | Corrugated expansion joint |
| CN106920640A (en) * | 2017-04-16 | 2017-07-04 | 中国海洋大学 | A kind of transformer under water |
| CN107369523A (en) * | 2017-08-30 | 2017-11-21 | 华中科技大学 | A kind of underwater transformer of Natural Heat Convection formula |
| CN108305746A (en) * | 2018-01-22 | 2018-07-20 | 中国海洋石油集团有限公司 | A kind of compensation underwater transformer of annular |
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| Publication number | Publication date |
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| CN108319304A (en) | 2018-07-24 |
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