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CN-122014898-A - Deep sea valve

CN122014898ACN 122014898 ACN122014898 ACN 122014898ACN-122014898-A

Abstract

Deep sea valve (1) having at least one valve slide (2), wherein the at least one valve slide (2) is movable by means of an actuator (3) in order to open a through-flow (5) in the deep sea valve (1), wherein a spring assembly (4) is arranged at the deep sea valve (1) and is set up for moving the valve slide (2) in order to close the through-flow in case of an emergency, wherein the actuator (3) has an electric drive, wherein the actuator (3) and the spring assembly (4) are arranged at opposite sides of the through-flow (5).

Inventors

  • G. Hendrix

Assignees

  • 罗伯特·博世有限公司

Dates

Publication Date
20260512
Application Date
20251107
Priority Date
20241111

Claims (8)

  1. 1. Deep sea valve (1) having at least one valve slide (2), wherein the at least one valve slide (2) is movable by means of an actuator (3) in order to open a through-flow (5) in the deep sea valve (1), wherein a spring assembly (4) is arranged at the deep sea valve (1) and is set up for moving the valve slide (2) in order to close the through-flow in case of an emergency, wherein the actuator (3) has an electric drive, and wherein the actuator (3) and the spring assembly (4) are arranged at opposite sides of the through-flow (5).
  2. 2. Deep sea valve (1) according to claim 1, wherein the spring assembly (4) and the actuator (3) are connected or connectable by a shaft (6), wherein the valve slider (2) is arranged on the shaft (6).
  3. 3. Deep sea valve (1) according to any one of the preceding claims, wherein the spring assembly (4) has at least one spring (7) counteracting the thrust of the actuator (3).
  4. 4. Deep sea valve (1) according to any one of the preceding claims, wherein the spring assembly (4) and the actuator (3) are arranged such that the deep sea valve (1) is in equilibrium along a through-flow axis (8).
  5. 5. Deep sea valve (1) according to any of the preceding claims, wherein the actuator (3) is connected to the valve slider (2) via an interface (9) and is exchangeable.
  6. 6. Subsea tree (10) having at least one draught tube (11) and a valve assembly (12), said subsea tree comprising a plurality of deep sea valves (1) according to the preceding claims.
  7. 7. The subsea tree (10) according to claim 6, wherein a plurality of deep sea valves (1) are arranged offset on different axes in the subsea tree (10) such that the subsea tree (10) is in equilibrium along a central axis (13) of the draught tube.
  8. 8. A subsea tree (10) according to any of claims 6 or 7, comprising a control block (14), wherein the control block (14) has at least one control unit (15) with which the actuators (3) can be manipulated accordingly.

Description

Deep sea valve Technical Field The present invention relates to a deep sea valve and a valve assembly at a subsea tree. Background The subsea tree, in turn, or a subsea tree, subsea X-Mas tree, or subsea hydrocarbon well christmas tree (hereinafter referred to as subsea tree), comprises a valve assembly and at least one draft tube, which is mountable vertically on a borehole at the seabed. Subsea trees are used as interfaces between pipelines and boreholes in the seabed. The valve assembly includes a deep sea valve for blocking and regulating the flow of the transfer stream and for various maintenance functions of operation. Subsea trees are used in the field of oil transportation or gas (e.g., CO 2 or hydrogen in the sea floor) storage. Multiple boreholes are used for each delivery area or storage area, and each borehole includes a subsea tree, respectively. Therefore, a large number of subsea trees are used for each transportation area or storage area, which leads to high costs especially when installing subsea trees. Subsea trees are costly to install at the seabed. Subsea trees are placed vertically onto a borehole in a water depth of up to >3500 meters using a crane on a vessel or platform and coupled by a submersible robot. Typically, a hydraulic cylinder unit with a return spring is used to operate the (remotely controlled) deep sea valve of the subsea tree. Manipulation is achieved by a control block with a switching valve and hydraulic memory fastened at the subsea tree. The pressure supply is achieved by a platform or vessel on the water. In the event of a control failure, the valve can be placed in the closed position for safety reasons by means of a spring. The process valve is typically arranged on one side at the subsea tree. Emergency maneuvers can also be performed by means of the submersible robot at such an operating side. Hydraulic cylinders and springs require a relatively large installation space and have a large mass. Furthermore, hydraulic valves are installed on the subsea tree, which have a control block and at least one hydraulic accumulator, which are likewise complex to shape and are implemented with large mass. The control block and the hydraulic accumulator are arranged on the side facing away from the operating side. Disclosure of Invention The object underlying the present invention is to at least partially solve the problems described in relation to the prior art. In particular, a viable solution should be provided with which subsea trees can be transported and installed more easily. In particular, in order to simplify and design many subsea tree installations at the seabed more cost-effectively, it is desirable to design the subsea tree more compact and, if necessary, lighter. Very particularly, the emphasis is on easier and more durable assembly at the drilling of the seabed. This object is achieved by the features of the independent claims. Further advantageous embodiments of the invention are given in the dependent claims. It is pointed out that the features recited individually in the claims can be combined with one another in any technically meaningful way and define further embodiments of the invention. Furthermore, the features specified in the claims are explicitly specified and explained in detail in the description, wherein further preferred embodiments of the invention are shown. A deep sea valve having at least one valve slider contributes to this object. The at least one valve slide can be moved by means of an actuator in order to (specifically) open or close the through-flow in the deep sea valve. The spring assembly is likewise arranged at the deep sea valve and is provided for displacing the valve slide in order to close off the throughflow in case of emergency (in case the actuator for the valve slide is not available and/or off-line (selbstst ä ndig)). The actuator has an electric drive. The actuator and the spring assembly are arranged on opposite sides of the throughflow. The deep sea valve can preferably be used for subsea operation. In particular, deep sea valves can be used in depths of at least 1000 meters, in particular at least 3000 meters and if necessary even more than 3500 meters. Deep sea valves can be used at boreholes when, for example, transporting oil. The deep sea valve can also be used at a borehole for e.g. CO 2 (carbon dioxide) storage facilities. Deep sea valves can be used to regulate, in particular open and/or close, inflow or outflow at a borehole. Also, maintenance functions can be achieved with deep sea valves. The valve slide is preferably a flat slide. The valve slide can preferably have an opening and a closure. The valve slide can be moved axially in such a way that the opening partially or completely releases the inflow or outflow (throughflow) at the borehole. The valve slide can be moved in such a way that the closure member completely blocks the through-flow at the borehole. The valve slide can be moved by means of an actu