CN209872190U - Heave compensation piston tensioner - Google Patents
Heave compensation piston tensioner Download PDFInfo
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- CN209872190U CN209872190U CN201920427865.4U CN201920427865U CN209872190U CN 209872190 U CN209872190 U CN 209872190U CN 201920427865 U CN201920427865 U CN 201920427865U CN 209872190 U CN209872190 U CN 209872190U
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Abstract
The utility model provides a wave compensation piston tensioner and a use method thereof, the system mainly comprises a piston tensioner, a gas-liquid accumulator, an electric or hydraulic winch, an air cylinder group, an oil supplementing device and an air bleeder, wherein the piston tensioner is connected with the gas-liquid accumulator through a hydraulic pipeline, the air cylinder group is connected with the upper part of the accumulator, the oil supplementing device is connected with the hydraulic pipeline, and the air bleeder is connected with the upper part of a hydraulic oil cylinder; and a cable is wound on the piston tensioner, one end of the cable is connected with the electric or hydraulic winch, and the other end of the cable is connected with a load. The utility model discloses passive wave compensation piston tensioning ware can be used to offshore drilling device, marine transfer device, marine replenishing device and marine hoist etc. the precision is high, and the reaction is sensitive rapidly, and it adopts the hydro-cylinder to add the method of energy storage ware for compensation arrangement and hydraulic system simple structure realize easily, and the reaction is rapid, and tension control precision is high, and security and reliability are high, also can normally work when losing the electricity.
Description
Technical Field
The utility model relates to a wave compensation mechanism technical field particularly, especially relates to a wave compensation piston tensioning ware.
Background
The ocean breeds the life of the earth, also provides indispensable activity space and natural resources for the survival and development of human beings, and the exploitation and utilization of ocean resources are more and more urgent along with the exhaustion of land resources. The ocean economic development is promoted and written into the thirteen-five program of the country, and ocean oil and gas, ocean transportation, ocean engineering equipment manufacturing and the like become emerging industries of the key development of the country.
Ocean resource development needs various equipment, wherein marine crane is a special hoisting machine for operation in the marine environment, and in the process of hoisting operation, the marine crane is influenced by factors such as wind, waves, gushes and currents at sea, complex relative motions such as rolling, pitching and heaving can be presented between two operating ships, and the goods in lowering can collide with the rising ship body, namely the goods falling on the deck are about to fall.
For a drilling ship and a semi-submersible drilling platform, motions with six degrees of freedom such as heave, lateral movement, longitudinal movement, yawing, rolling, pitching and the like can be generated under the action of waves. The movement of the hull or the platform in the heave direction drives the drilling frame, the hook and the drill string suspended on the hook to move up and down, so that the change of the drilling pressure at the bottom of the well is caused, and the efficiency and the safety of the well drilling are seriously influenced.
Marine sailing transverse replenishment requires the transfer of materials between 2 independently moving vessels. Due to the difficulties of complex relative motion of ships, various supplies and materials, long transmission distance and the like, great challenges are brought to the marine navigation transverse supply. Therefore, in modern offshore navigation lateral supply devices, a wave compensation piston tensioner is often arranged, and the quality of the compensation effect directly influences the safety and the efficiency of offshore supply operation.
SUMMERY OF THE UTILITY MODEL
In view of the above, an object of the present invention is to provide a heave compensation piston tensioner as a heave compensation device, which is applied to a crane ship, and can well prevent a rope from loosening phenomenon caused by relative movement, so that a lifted object is not influenced by a heave movement of a mother ship and basically keeps a static state, thereby effectively preventing the above situations and saving operation cost; on the platform, for compensating for the heave motion of the drill string, thereby avoiding or greatly mitigating the effects of wind and waves. In the marine sailing transverse supply device, the wave compensation piston tensioner compensates the relative motion of two ships, and ensures that goods are safely and stably lifted and landed under the ship swinging condition.
The utility model discloses a technical means as follows:
a heave compensation piston tensioner comprising: the device comprises a piston tensioner, a gas-liquid accumulator, an electric or hydraulic winch, an air bottle group, an oil supplementing device and an air discharging device; the piston tensioner is connected with a gas-liquid energy accumulator through a hydraulic pipeline, the air bottle group is connected with the upper part of the energy accumulator, the oil supplementing device is connected with the hydraulic pipeline, the hydraulic pipeline is filled with hydraulic oil, and the air discharging device is connected with the upper part of the hydraulic oil cylinder; and a cable is wound on the piston tensioner, one end of the cable is connected with the electric or hydraulic winch, and the other end of the cable is connected with a load.
Further, the piston tensioner comprises a hydraulic oil cylinder, a piston rod, an upper pulley block and a lower pulley block; the piston is positioned in the hydraulic oil cylinder, and the piston rod is connected with the piston; the upper pulley block is a movable pulley block and is connected with the piston rod, and the lower pulley block is a fixed pulley block and is connected with the hydraulic oil cylinder.
Furthermore, the gas-liquid energy accumulator is a floating piston type energy accumulator, a floating piston is designed in the floating piston type energy accumulator, the center of the floating piston is a conical body, and the diameter of the bottom surface of the top end of the conical body is half of that of the floating piston.
Further, the piston tensioner is bolted to the deck or hull.
Furthermore, the lower part of the hydraulic oil cylinder comprises a speed regulating valve and a check valve, the speed regulating valve and the check valve are connected in parallel, one end of the speed regulating valve and one end of the check valve are connected with the hydraulic oil cylinder together, and the other end of the speed regulating valve and the other end of the check valve are connected with a hydraulic pipeline.
Furthermore, the oil supplementing device comprises an oil supplementing valve, an auxiliary oil supplementing interface, a manual pump, a suction filter, an oil tank and an oil supplementing pipeline; the oil supplementing valve is a stop valve, the oil tank is provided with an air discharge port and an oil discharge plug, one end of the oil supplementing valve is connected with an oil inlet/outlet at the lower end of the gas-liquid energy accumulator through an oil supplementing pipeline, the other end of the oil supplementing valve is connected with one end of an auxiliary oil supplementing interface through an oil supplementing pipeline, the other end of the auxiliary oil supplementing interface is connected with one end of a manual pump through an oil supplementing pipeline, and the other end of the manual pump is connected with the oil tank through an oil supplementing pipeline and an oil supplementing pipeline inlet inside the oil tank is provided with a suction filter.
Further, the air release device comprises an air release valve, a visual indicator and an air release pipeline; the air release valve is a stop valve; one end of the air release valve is connected with the upper part of the hydraulic oil cylinder, the other end of the air release valve is connected with one end of the visual indicator, and the other end of the visual indicator is communicated with the oil tank through the air release pipeline.
The utility model also provides a wave compensation piston tensioning ware's application method, including following step:
when the cable is in no-load state, the piston rod is in full extension state, one end of the cable is connected with the electric or hydraulic winch, after the other end of the cable is connected with a load, the winch is operated to force the piston and the upper pulley set to move downwards, the pressure in the hydraulic oil cylinder is overcome, the piston is in a middle stroke, the tension on the cable is balanced with the hydraulic pressure, and the electric or hydraulic winch provides an initial tension for the cable;
when a ship or a drilling platform rises along with waves, the tension of a cable is increased due to inertia of a load, so that a tensioner is forced to compress, a steel cable is released, load displacement is compensated, the load is kept in a balanced state as much as possible, and meanwhile, hydraulic oil in a hydraulic oil cylinder is pressed into an energy accumulator to store energy; on the contrary, when the system sinks along with the waves, the system generates reverse compensation and releases energy;
when the sea sails for transverse supply, the two ships can generate heaving and swinging under the action of sea waves to generate relative motion, when the distance between hanging points is increased due to the relative motion of the two ships, the cable is tensioned, the tension is increased, the cable wound on the piston tensioner pulley block is tightened, high-pressure air in the piston tensioner is compressed, the high cable is released, and the cable is prevented from being broken. When the distance between the hanging points is reduced due to the relative movement of the two ships, the cable is loosened, the tension is reduced, the cable wound on the pulley block of the piston tensioner is tightened under the expansion of high-pressure air in the piston tensioner, the cable is tensioned, and supplies are prevented from falling into water.
When the cable is broken or the load is suddenly eliminated, the speed regulating valve arranged at the lower part of the hydraulic oil cylinder can control the fluid speed in the piston type energy accumulator and the hydraulic oil cylinder cavity, and the damage to the tensioner or surrounding equipment caused by the sudden acceleration of the piston is prevented.
Compared with the prior art, the utility model has the advantages of it is following:
1. the tension control device has the advantages of high precision, sensitive and rapid response, high tension control precision, high safety and reliability, and normal work when power is lost.
2. The method of adding the energy accumulator to the oil cylinder is adopted, so that the compensating device and the hydraulic system are simple in structure, easy to implement and easy to operate and maintain.
3. The compensation power comes from the heave of the ship, almost no power is consumed, and the cost is low.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic diagram of the piston tensioner of the present invention.
Fig. 2 is a schematic view of the piston tensioner of the present invention.
Wherein: 1. piston tensioner, 2, gas-liquid accumulator, 3, electric or hydraulic winch, 4, air cylinder group, 5, cable, 6, load, 7, hydraulic oil cylinder, 8, piston, 9, piston rod, 10, upper pulley group, 11, lower pulley group, 12, floating piston, 13, conical top end, 14, speed regulating valve, 15, check valve, 16, oil supplementing valve, 17, auxiliary oil supplementing interface, 18, manual pump, 19, coarse filter, 20, oil tank, 21, relief port, 22, oil drain plug, 23, relief valve, 24, visual indicator, 25, pressure gauge interface, 26, air relief valve, 27, safety valve, 28, air inlet valve.
Detailed Description
It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the orientation words such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a contrary explanation, these orientation words do not indicate and imply that the device or element in question must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of the present invention: the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and if not stated otherwise, the terms have no special meaning, and therefore, the scope of the present invention should not be construed as being limited.
As shown in fig. 1, the present invention provides a heave compensation piston tensioner, comprising: the device comprises a piston tensioner 1, a gas-liquid accumulator 2, an electric or hydraulic winch 3, an air cylinder group 4, an oil supplementing device and an air discharging device;
the piston tensioner 1 is connected with the gas-liquid accumulator 2 through a hydraulic pipeline; the air bottle group 4 is connected with the upper part of the energy accumulator 2 to provide high-pressure air for the energy accumulator 2, the tension which can be generated on the cable 5 depends on the pressure of the high-pressure air, and the safety valve 27 is arranged between the air bottle group 4 and the energy accumulator 2; the oil supplementing device is connected with a hydraulic pipeline, and hydraulic oil is filled in the hydraulic pipeline; the air bleeder is connected with the upper part of the hydraulic oil cylinder 7, so that the damage to a hydraulic system caused by the existence of air is avoided; a cable 5 is wound on the piston tensioner 1, one end of the cable 5 is connected with the electric or hydraulic winch 3, and the other end is connected with a load 6.
The piston tensioner 1 comprises a hydraulic oil cylinder 7, a piston 8, a piston rod 9, an upper pulley block 10 and a lower pulley block 11; the cable 5 is wound on the upper pulley block 10 and the lower pulley block 11 in a staggered arrangement for multiple circles, and the compensation stroke (the winding times of the cable multiplied by the maximum displacement of the hydraulic oil cylinder 7) is multiple times of the stroke of the hydraulic oil cylinder 7; the piston 8 is positioned in the hydraulic oil cylinder 7, and the piston rod 9 is connected with the piston 8; the upper pulley block 10 is a movable pulley block and is connected with the piston rod 9, and the lower pulley block 11 is a fixed pulley block and is connected with the hydraulic oil cylinder 7.
The gas-liquid energy accumulator 2 is a floating piston type energy accumulator, the center of the floating piston 12 is provided with a conical body 13, and the diameter of the bottom surface of the conical top end 13 is half of that of the floating piston 12; when the floating piston 12 reaches the end of the stroke, a buffer oil cavity is formed between the floating piston 12 and the bottom of the energy accumulator 2, oil can be discharged to the lower part of the piston tensioner 1 only through an annular clearance formed by the conical top end 13 and a conical outlet at the lower part of the gas-liquid energy accumulator 2, the annular clearance is reduced along with the increase of the stroke, the closed hydraulic oil generates proper back pressure to act on the hydraulic oil side of the piston 12, the movement speed of the floating piston 12 is controlled, and the collision is prevented.
The piston tensioner 1 is bolted to the deck or hull and the electric or hydraulic winch 3 is mounted on the deck. As shown in fig. 2, the upper end of the piston rod of the hydraulic cylinder 7 is connected to the upper pulley block 10 through a bracket 71, the brackets 71 are separated by a plurality of bracket plates 72, each pulley of the upper pulley block 10 is rotatably installed between the bracket plates 72 at intervals, the lower end of the hydraulic cylinder 7 is fixed on a deck or a ship body through a support 73, the supports 73 are also separated by a plurality of bracket plates 72, and each pulley of the lower pulley block 11 is also rotatably installed between the bracket plates 72 at intervals.
The lower part of the hydraulic oil cylinder 7 comprises a speed regulating valve 14 and a check valve 15, the speed regulating valve 14 and the check valve 15 are connected in parallel, the speed regulating valve 14 can limit the piston 8 to move upwards at a certain speed, and the check valve 15 can enable the cable 5 to be released at the maximum speed when being tensioned.
The oil supplementing device comprises an oil supplementing valve 16, an auxiliary oil supplementing interface 17, a manual pump 18, a suction filter 19, an oil tank 20 and an oil supplementing pipeline; the oil replenishing valve 16 is a stop valve, and the oil tank 20 is provided with an air release port 21 and an oil release plug 22.
The air release device comprises an air release valve 23, a visual indicator 24 for observing the air release condition and an air release pipeline; the air release valve 23 is a stop valve; said bleed line leading to the fuel tank 22.
As shown in fig. 1, a method of using the above described heave compensation piston tensioner comprises the steps of:
when the cable is in no-load state, the piston rod 9 is in a fully extended state, one end of the cable 5 is connected with the electric or hydraulic winch 3, and the other end of the cable is connected with the load 6, then the winch 3 is operated to force the piston 8 and the upper pulley block 10 to move downwards, the pressure in the hydraulic oil cylinder 7 is overcome, the piston 8 is in a middle stroke, the tension on the cable 5 is balanced with the hydraulic pressure, and the electric or hydraulic winch 3 provides initial tension for the cable 5;
when a ship or a drilling platform rises along with waves, the tension of the cable 5 is increased by the load 6 due to inertia, so that the tensioner is forced to compress, the cable 5 is released, the displacement of the load 6 is compensated, the load 6 is kept in a balanced state as much as possible, and meanwhile, hydraulic oil in the hydraulic oil cylinder 7 is pressed into the energy accumulator 2 to store energy; on the contrary, when the system sinks along with the waves, the system generates reverse compensation and releases energy;
when the cable 5 is broken or the load 6 disappears suddenly, the speed regulating valve 14 arranged at the lower part of the hydraulic oil cylinder 7 can control the fluid speed in the cavities of the piston type energy accumulator 2 and the hydraulic oil cylinder 7, and the piston 8 is prevented from accelerating suddenly to cause damage to the piston tensioner or surrounding equipment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (7)
1. A heave compensation piston tensioner comprising: the device comprises a piston tensioner, a gas-liquid accumulator, an electric or hydraulic winch, an air bottle group, an oil supplementing device and an air discharging device;
the piston tensioner is connected with a gas-liquid energy accumulator through a hydraulic pipeline, the air bottle group is connected with the upper part of the energy accumulator, the oil supplementing device is connected with the hydraulic pipeline, the hydraulic pipeline is filled with hydraulic oil, and the air discharging device is connected with the upper part of the hydraulic oil cylinder; and a cable is wound on the piston tensioner, one end of the cable is connected with the electric or hydraulic winch, and the other end of the cable is connected with a load.
2. The wave compensating piston tensioner as claimed in claim 1, wherein the piston tensioner comprises a hydraulic ram, a piston rod, an upper pulley set, a lower pulley set;
the piston is positioned in the hydraulic oil cylinder, and the piston rod is connected with the piston; the upper pulley block is a movable pulley block and is connected with the upper end of the piston rod, and the lower pulley block is a fixed pulley block and is connected with the lower end of the hydraulic oil cylinder.
3. The wave compensating piston tensioner as claimed in claim 1, wherein the gas-liquid accumulator is a floating piston accumulator, a floating piston is designed in the floating piston accumulator, the center of the floating piston is a cone, and the diameter of the top bottom surface of the cone is half of that of the floating piston.
4. The wave compensating piston tensioner as claimed in claim 2, wherein the piston tensioner is bolted to the deck or hull.
5. The heave compensation piston tensioner according to claim 2, wherein the lower portion of the hydraulic cylinder comprises a governor valve and a check valve, the governor valve and the check valve are connected in parallel, the governor valve and the check valve are connected together at one end to the hydraulic cylinder and at the other end to the hydraulic line.
6. The wave compensating piston tensioner as claimed in claim 1, wherein the oil recharging means comprises an oil recharging valve, an auxiliary oil recharging port, a manual pump, a suction filter, a tank, and an oil recharging line; the oil supplementing valve is a stop valve, the oil tank is provided with an air discharge port and an oil discharge plug, one end of the oil supplementing valve is connected with an oil inlet/outlet at the lower end of the gas-liquid energy accumulator through an oil supplementing pipeline, the other end of the oil supplementing valve is connected with one end of an auxiliary oil supplementing interface through an oil supplementing pipeline, the other end of the auxiliary oil supplementing interface is connected with one end of a manual pump through an oil supplementing pipeline, and the other end of the manual pump is connected with the oil tank through an oil supplementing pipeline and an oil supplementing pipeline inlet inside the oil tank is provided with a suction filter.
7. The wave compensating piston tensioner as claimed in claim 1, wherein the air bleed means comprises an air bleed valve, visual indicator and air bleed line; the air release valve is a stop valve; one end of the air release valve is connected with the upper part of the hydraulic oil cylinder, the other end of the air release valve is connected with one end of the visual indicator, and the other end of the visual indicator is communicated with the oil tank through the air release pipeline.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920427865.4U CN209872190U (en) | 2019-04-01 | 2019-04-01 | Heave compensation piston tensioner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920427865.4U CN209872190U (en) | 2019-04-01 | 2019-04-01 | Heave compensation piston tensioner |
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| CN209872190U true CN209872190U (en) | 2019-12-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109987530A (en) * | 2019-04-01 | 2019-07-09 | 南通力威机械有限公司 | Compensation of undulation piston tensioner and its application method |
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2019
- 2019-04-01 CN CN201920427865.4U patent/CN209872190U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109987530A (en) * | 2019-04-01 | 2019-07-09 | 南通力威机械有限公司 | Compensation of undulation piston tensioner and its application method |
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