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Bayonet type quick dismounting and mounting inner pipe assembly suitable for submarine drilling machine rope coring drilling tool

A core drilling tool and inner tube assembly technology, which is applied in the directions of extraction of undisturbed cores, earth-moving drilling, etc., can solve problems such as affecting the effective coring ability of subsea drilling rigs and reducing the total number of inner tube assemblies.

Pending Publication Date: 2021-05-18
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, if a single inner tube assembly is too heavy, the total number of inner tube assemblies that can be carried is reduced, which directly affects the effective coring capacity of the subsea drilling rig

Method used

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  • Bayonet type quick dismounting and mounting inner pipe assembly suitable for submarine drilling machine rope coring drilling tool
  • Bayonet type quick dismounting and mounting inner pipe assembly suitable for submarine drilling machine rope coring drilling tool
  • Bayonet type quick dismounting and mounting inner pipe assembly suitable for submarine drilling machine rope coring drilling tool

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings.

[0024] like figure 1 As shown, the present invention includes an ejection card assembly 1 , a single-action assembly 2 , a bayonet type dismounting device and an inner tube 9 . The cartridge assembly 1 is connected to the upper end of the single-action assembly 2 .

[0025] The bayonet type dismounting device includes a bayonet joint 3, a compression spring 4, a spring guide seat 5, a cylindrical pin 6, a sliding sleeve 7 and a bayonet joint 8; The joint 3 is connected; the slot joint 3 and the inner pipe joint 021 are respectively provided with a spring hole 031 and a spring blind hole, and the spring 031 communicates with the spring blind hole and is coaxial; one end of the compression spring 4 is connected to the bottom of the spring blind hole, and the other end is connected to the spring blind hole. The spring guide seat 5 is connected. The slot joint 3 is prov...

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Abstract

The invention discloses a bayonet type quick dismounting and mounting inner pipe assembly suitable for a submarine drilling machine rope coring drilling tool. The bayonet type quick dismounting and mounting inner pipe assembly comprises an elastic clamping assembly, a single-action assembly, a bayonet type dismounting and mounting device and an inner pipe, wherein the elastic clamping assembly is connected with the single-action assembly; the bayonet type dismounting and mounting device comprises a clamping groove connector, a compression spring, a spring guide seat, a sliding sleeve and a clamping roller connector; the single-action assembly is connected with the clamping groove connector through an inner pipe connector; the clamping groove connector and the inner pipe connector are provided with a spring hole and a spring blind hole correspondingly; the spring hole and the spring blind hole communicate and are coaxial; one end of the compression spring is connected with the bottom of the spring blind hole, and the other end of the compression spring is connected with the spring guide seat; the clamping groove connector is provided with a long straight hole, and the length direction of the long straight hole is in the axis direction of the inner pipe; and the sliding sleeve is provided with a pin hole, a cylindrical pin is arranged in the pin hole, and the clamping groove connector and the clamping roller connector are hung on a clamping groove through a clamping roller to be connected. The bayonet type quick dismounting and mounting inner pipe assembly is simple in structure, quick in operation and capable of meeting the requirement for submarine automatic quick dismounting and mounting of the inner pipe assembly.

Description

technical field [0001] The invention relates to a bayonet type quick disassembly and assembly inner pipe assembly suitable for a cable core drilling tool of a seabed drilling rig. Background technique [0002] With the gradual depletion of terrestrial mineral resources, marine resources will become a potential alternative energy source for future social and economic development due to their huge reserves. Therefore, recent research on the development and utilization of marine mineral resources has become a hot topic. Obtaining rock ore cores directly from the deep seabed by drilling technology is a direct method for evaluating mineral reserves and engineering geological conditions of the seabed. At present, there are mainly two forms of subsea core drilling operations, which are sampling by large drilling ships and sampling by subsea drilling rigs. Compared with large drilling ships, submarine drilling rigs have the characteristics of high operating efficiency, strong conc...

Claims

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Application Information

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IPC IPC(8): E21B25/18E21B25/02
CPCE21B25/18E21B25/02
Inventor 王佳亮孙杨彭奋飞钱弟垒
Owner HUNAN UNIV OF SCI & TECH
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