CN105235838A - Gear driving type butt-joint locking mechanism of underwater control module - Google Patents

Abstract

The invention provides a gear-driven docking locking mechanism of an underwater control module, which includes a docking body of the underwater control module and a base installed on the underwater equipment. Locking pins are installed on the tightening ring, and a row of tooth profiles are processed on the side of the locking ring; corresponding locking sleeves are installed on the base, and locking grooves are processed on the locking sleeves; positioning sleeve, guide key, guide pin, the lower sleeve is installed on the base; the ring body and the ring are installed on the upper top plate. The invention has a compact structure, not only can cancel the locking shaft in the underwater control module, but also saves two sealing devices, which improves the reliability of the system; since the installation tool is on the side of the underwater control module, it can be completed underwater The replacement of the installation tool makes the installation and disassembly of the underwater robot more convenient, and effectively solves the locking and sealing of the underwater control module below 3000 meters.

Description

Gear Driven Docking Locking Mechanism for Subsea Control Module

technical field

The invention relates to a docking locking mechanism, in particular to a gear-driven docking locking mechanism of an underwater control module, which belongs to the field of offshore oil engineering.

Background technique

With the recovery and continuous growth of the global economy, people's demand for oil is also increasing. According to the world energy development forecast released by the International Energy Agency (IEA), from 2000 to 2030, the world oil demand will grow at an annual rate of 1.6%, and will reach 5.769 billion tons by 2030; the demand for natural gas will grow at an annual rate of 1.6%. With a growth rate of 2.4%, it will reach the equivalent of 4.203 billion tons of oil by 2030. Traditional land energy can no longer meet the huge demands of human beings due to social development, so the pace of human beings has gradually moved from land to ocean.

In recent years, global offshore oil and gas exploration has developed rapidly, and has gradually expanded from shallow sea areas within 300 meters to deep sea areas (deep seas are defined as water depths above 500 meters). At present, the maximum water depth of known deep water drilling has reached 3053 meters, and the development water depth has reached 2292 meters. But at present, from the perspective of the whole world, there are only a handful of countries that truly have marine exploration equipment and development capabilities. As far as the underwater oil production system is concerned, most of its production suppliers are concentrated in some developed countries such as the United States and Norway.

The subsea control module (SCM) is the core equipment of the subsea control system. The SCM controls the valves on the subsea tree, monitors the state of the tree, and feeds back the information of the subsea equipment to the equipment on the sea surface in time. The surface production platform and The coordination work of the subsea production system is also realized through the subsea control module. Usually, the subsea control module is locked with the installation base plate of the subsea control module and directly installed on the equipment to be controlled, such as: subsea Christmas tree, subsea manifold, etc.

At present, most of the existing underwater locking mechanisms adopt the structure of dynamic seals, using the intermediate locking shaft for locking, and are used in diving and deep water environments. However, due to their complex structures, many dynamic seals can only be used when the mechanism operates at high speed. Its sealing performance can only be exerted when it is used, so it is not suitable for application to underwater control modules. The static seal structure can not only effectively reduce the machining accuracy and assembly accuracy of the parts, but also the sealing material will not be worn when the static seal locking mechanism is working, so the static seal locking mechanism often has a longer service life than the dynamic seal structure. life.

At present, there are many types of existing underwater docking locking mechanisms. Most of the locking and unlocking control principles adopt the screw transmission mechanism. Whether it is a dynamic seal or a static seal, the sealing structure is mainly installed on the locking shaft. The guide mechanism mostly uses a plurality of positioning pins for guiding and positioning, but the guide pins require high precision in processing and assembly, and the situation of butt joint jamming often occurs. However, the locking mechanism mostly adopts the rotating locking shaft to lift the locking shaft. This kind of locking mechanism has a complex structure and is prone to jamming.

Contents of the invention

The main purpose of the present invention is to overcome the above-mentioned technical shortcomings existing in the prior art, and to provide a gear-driven docking locking mechanism for an underwater control module, which can not only cancel the locking shaft in the underwater control module, but also save Two sealing devices are removed to improve system reliability.

The purpose of the present invention is achieved in the following way: it includes the docking body of the underwater control module and a base installed on the underwater equipment, a lower sleeve is installed at the center of the base, and a hydraulic male plug is arranged on the base and the base electrical connector, and the lower end of the base is also equipped with a locking sleeve, and the locking sleeve is provided with a locking groove. The docking body of the underwater control module includes a housing, an upper top plate installed on the upper end of the housing and a On the lower bottom plate at the lower end of the housing, a lifting ring body is installed on the upper top plate, a lifting ring is installed on the lifting ring body, a locking ring is installed on the outer ring of the lower bottom plate, and a locking pin is installed on the locking ring. The tight pin cooperates with the locking groove, and the outer surface of the locking ring is provided with a toothed structure, and the toothed structure is driven by the underwater robot through the installation tool, and a positioning sleeve is installed at the center of the lower bottom plate, and the positioning sleeve The end of the sleeve is provided with a blocking ring, the outer surface of the positioning sleeve is provided with a guide key, the inner surface of the lower sleeve is provided with a guide groove, and the guide key is matched with the guide groove, and the lower base plate is also provided with a Cooperate with the hydraulic male plug on the base and the base electrical connector respectively with the hydraulic female plug and the lower base electrical connector.

The present invention also includes such structural features:

1. There are still guide pins on the lower bottom plate, and guide holes are provided on the base to cooperate with the guide pins.

2. Sealing rings are provided at the joints between the housing and the lower bottom plate, and at the joints between the housing and the upper top plate.

3. The toothed structure is driven by the underwater robot through the installation tool.

Compared with the prior art, the beneficial effect of the present invention is: the present invention has a compact structure, not only can cancel the locking shaft in the underwater control module, but also saves two sealing devices, which improves the reliability of the system; The installation tool is on the side of the underwater control module, and the replacement of the installation tool can be completed underwater, which is more convenient for the installation and disassembly of the underwater robot, and effectively solves the locking and sealing of the underwater control module below 3000 meters.

Description of drawings

Fig. 1 is the overall schematic diagram of the present invention;

Fig. 2 is the internal assembly drawing of the present invention;

Fig. 3 is a schematic perspective view of the present invention;

Among them: 1. Base, 2. Locking sleeve, 3. Lower sleeve, 4. Blocking ring, 5. Guide pin, 6. Locking ring, 7. Locking pin, 8. Housing, 9. Upper top plate , 10. Lifting ring body, 11. Lifting ring, 12. Hydraulic male plug, 13. Positioning sleeve, 14. Guide key, 15. Lower base plate, 16. Hydraulic female plug.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

1-3, the base 1 is installed on the underwater equipment, and the base 1 is equipped with a locking sleeve 2 and a lower sleeve 3; the underwater control module housing 8, the upper top plate 9 of the underwater control module, the underwater The lower bottom plate 15 of the control module is formed into a whole by means of bolt connection; wherein, the upper top plate 9 of the underwater control module is equipped with a ring body 10 and a ring 11 etc., which are used for hoisting of the underwater control module; the lower bottom plate of the underwater control module A locking ring 6 is installed on the 15, and a locking pin 7 is installed on the locking ring 6. In addition, a positioning sleeve 13, a blocking ring 4, a guide key 14, and a guide pin 5 are also installed on the bottom plate 15 of the underwater control module; A row of tooth profiles (that is, a tooth structure) is also processed on the locking ring 6. The ROV installation tool rotates the locking ring 6 by engaging with a row of tooth profiles on the locking ring 6, and the lock on the locking ring 6 The tight pin cooperates with the slope of the locking groove on the locking sleeve 2, so that the underwater control module moves up and down; a sealing device is also installed on the underwater control module housing 8, and the sealing device includes: the upper top plate of the underwater control module A sealing ring is installed between 9 and the underwater control module housing 8, and a sealing ring is installed between the bottom plate 15 of the underwater control module and the underwater control module housing 8 to prevent external seawater from entering the underwater control module housing.

The bottom plate 15 of the above-mentioned underwater control module is provided with several installation holes, and several hydraulic female connectors 16 and electrical connectors are installed in the installation holes; several installation holes are also provided on the base 1, and several hydraulic male connectors 12 are installed in the installation holes. and electrical connectors; while the underwater control module is docked with the base 1, several hydraulic female connectors 16 and electrical connectors are also docked with corresponding hydraulic male connectors 12 and electrical connectors on the base 1 at the same time.

The present invention adopts following installation steps:

The first step: first place the lower bottom plate 15 of the underwater control module on the shelf;

Step 2: Install several hydraulic female connectors 16 and electrical connectors on the lower bottom plate 15 of the underwater control module;

The third step: install the locking pin 7 on the locking ring 6;

The fourth step: the underwater control module housing 8 and the upper top plate 9 of the underwater control module are formed into a whole with screws;

Step 5: Install the assembled underwater control module housing 8 and the upper top plate 11 of the underwater control module on the lower bottom plate 15 of the underwater control module with screws;

Step 6: Install the locking ring 6 on the bottom plate 15 of the underwater control module;

Step 7: Install the lifting ring body 10 and the lifting lug 11 on the top plate 9 of the underwater control module;

Step 8: Install the guide pin 5 on the bottom plate 15 of the underwater control module with screws;

Step 9: Put the base 1 on the shelf;

Step 10: Install the lower sleeve 3 on the base 1 with screws;

Step 11: Install several hydraulic male connectors 13 and electrical connectors on the base 1;

Step 12: Install the locking sleeve 2 on the base 1 with screws;

The working principle of the present invention:

When in use, after the present invention is installed on the underwater control module, the hoisting device that hangs the underwater control module by a crane slowly lowers the underwater control module. The underwater camera on the robot finds the base 1, adjusts the orientation of the crane through the underwater camera, and then adjusts the docking position of the underwater control module and the base 1. To keep the underwater control module in the correct direction, during the process of continuing to lower, the guide key 14 on the positioning sleeve 13 on the lower bottom plate 15 of the underwater control module and the guide grooves in the upper and lower sleeves 3 of the base 1 are used to control the underwater control module. Accurate positioning docking; at the same time, several hydraulic female connectors 16, hydraulic male connectors 12 and electrical connectors are also docked at the same time. After the locking pin 7 is inserted into the groove of the locking sleeve, the underwater robot engages with a row of tooth profiles on the locking ring 6 through the installation tool to make the locking ring 6 rotate, and the locking pin on the locking ring 6 7 cooperates with the slope of the locking groove on the locking sleeve 2, so that the underwater control module moves downward; when the locking pin 7 completely enters the locking groove, all joints are docked in place. As long as the installation tool can drive the toothed structure on the locking ring, a rack or gear meshing with the toothed structure can be selected and driven by the underwater robot, which is easy to implement.

When it is necessary to unlock the underwater control module and the base 1, the underwater robot engages with a row of tooth profiles on the locking ring 6 through the installation tool to make the locking ring 6 reversely rotate, so that the locking pin 7 exits the locking groove , when the locking pin 7 is completely withdrawn, the lifting lug of the underwater control module is hung by the crane with a sling, and the underwater control module is lifted upwards, so as to realize the unlocking of the underwater control module and the base 1.

The present invention comprises a docking body of a base 1 and an underwater control module, wherein a locking sleeve 2 is installed on the base 1, and a locking groove is processed on the locking sleeve 2; a locking sleeve is installed on the bottom plate 15 of the underwater control module. Ring 6, locking pins are installed on the locking ring 6, and a row of tooth profiles are also processed on the locking ring 6; the ROV installation tool rotates the locking ring 6 by engaging with a row of tooth profiles on the locking ring 6, and the locking The locking pin on the tight ring 6 cooperates with the slope of the locking groove on the locking sleeve 2, so that the underwater control module moves up and down; the lower bottom plate 15 of the underwater control module is equipped with a positioning sleeve 13, a guide key 14, Guide pin 5, lower sleeve 3 is installed on the base; Ring body 10, ring 11 are installed on top plate 9 on the underwater control module; Two sealing devices are also installed on the underwater control module.

The lower bottom plate 15 of the underwater control module is equipped with a locking ring 6, a positioning sleeve 13, a blocking ring 4, a guide key 14, and a guide pin 5, which are used for docking locking and guiding of the underwater control module, and underwater control Several hydraulic female plugs 16 and electrical connectors are also installed on the lower base plate 15 of the module.

The base 1 is equipped with a locking sleeve 2 and a lower sleeve 3, which are used for docking, locking and guiding of the underwater control module. Several hydraulic male plugs 12 and electrical connectors are also installed on the base 1. When the lower control module is docked and locked, several hydraulic connectors and electrical connectors are also docked at the same time.

The upper roof 9 of the underwater control module is equipped with a hoisting mechanism, which is composed of a hoisting ring body 10, a hoisting ring 11, etc. This device is a single-point hoisting mechanism, which is beneficial to ensure that the underwater control module is installed underwater. verticality.

A locking ring 6 is installed on the lower bottom plate 15 of the underwater control module, and a row of tooth profiles is processed on the locking ring 6. The ROV installation tool engages with a row of tooth profiles on the locking ring 6 to make the locking ring 6 rotates, the locking pin on the locking ring 6 cooperates with the slope of the locking groove on the locking sleeve 2, so that the underwater control module moves up and down, and then realizes the docking, locking and unlocking of the underwater control module.

A sealing ring is installed between the upper top plate 9 of the underwater control module and the underwater control module housing 8, and a sealing ring is installed between the lower bottom plate 15 of the underwater control module and the underwater control module housing 8. The seal is a static seal, and its sealing performance is better than that of a dynamic seal.

An underwater gear-driven docking locking mechanism, a locking ring 6 matched with it is installed outside the lower bottom plate 15 of the underwater control module, a locking pin 7 is installed on the locking ring, and the locking ring is still on the side A row of tooth profiles is processed; the corresponding locking sleeve 2 is installed on the base 1, and a locking groove is processed on the locking sleeve 2; a positioning sleeve 13, a guide key 14, and a guide key 14 are installed on the bottom plate 15 of the underwater control module. Pin 5, the lower sleeve 3 is installed on the base; ring body 10 and ring 11 are installed on the top plate 9 of the underwater control module; two sealing devices are also installed on the shell of the underwater control module. The invention has a compact structure, not only can cancel the locking shaft in the underwater control module, but also saves two sealing devices, which improves the reliability of the system; since the installation tool is on the side of the underwater control module, it can be installed underwater Completing the replacement of the installation tools makes it easier to install and disassemble the underwater robot, and effectively solves the problem of locking and sealing the underwater control module below 3,000 meters.

Claims (5)

1. The gear-driven docking locking mechanism of the underwater control module is characterized in that: it includes the docking body of the underwater control module and a base installed on the underwater equipment, and a lower sleeve is installed at the center of the base, The base is provided with a hydraulic male plug and a base electrical connector, and a locking sleeve is installed at the lower end of the base, and a locking groove is provided on the locking sleeve. The docking body of the underwater control module includes a housing, The upper top plate installed on the upper end of the shell and the lower bottom plate installed on the lower end of the shell, the upper top plate is equipped with a lifting ring body, the lifting ring body is equipped with a lifting ring, the outer ring of the lower bottom plate is equipped with a locking ring, the locking ring A locking pin is installed on the top, and the locking pin is matched with the locking groove. The outer surface of the locking ring is provided with a toothed structure. The center of the lower bottom plate is installed with a positioning sleeve, and the end of the positioning sleeve is provided There is a blocking ring, the outer surface of the positioning sleeve is provided with a guide key, the inner surface of the lower sleeve is provided with a guide groove, and the guide key is matched with the guide groove, and the lower base plate is also provided with a The hydraulic male plug on the top and the base electrical connector match the hydraulic female plug and the lower base electrical connector. 2. The gear-driven docking locking mechanism of an underwater control module according to claim 1, characterized in that: there are still guide pins on the lower bottom plate, and guide holes are provided on the base to cooperate with the guide pins . 3. The gear-driven docking locking mechanism of an underwater control module according to claim 1 or 2, characterized in that: the connection between the housing and the lower bottom plate, and the connection between the housing and the upper top plate are both A sealing ring is provided. 4. The gear-driven docking locking mechanism of an underwater control module according to claim 1 or 2, wherein the toothed structure is driven by an underwater robot through an installation tool. 5 . The gear-driven docking locking mechanism of an underwater control module according to claim 3 , wherein the toothed structure is driven by an underwater robot through an installation tool. 6 .