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Integrated control valve of logging winch and logging winch system

A technology integrating control valve and well logging, applied in the direction of clockwork mechanism, hoisting device, etc., can solve problems such as system overload, and achieve the effect of overcoming system overload

Active Publication Date: 2015-03-25
CHINA NAT OFFSHORE OIL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is to overcome the deficiency that the hydraulic circuit action control of the logging winch and the braking action control of the parking brake circuit in the braking circuit are not related to each other, which may lead to system overload and the like.

Method used

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  • Integrated control valve of logging winch and logging winch system
  • Integrated control valve of logging winch and logging winch system
  • Integrated control valve of logging winch and logging winch system

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Embodiment Construction

[0045]The technical solutions of the present invention will be described in detail below in conjunction with the accompanying drawings and preferred embodiments. The following examples are only used to illustrate and explain the present invention, but not to limit the technical solution of the present invention.

[0046] Such as Figure 4 As shown, it is the principle of the embodiment of the integrated control valve to realize the control of the logging winch provided by the present invention, including the valve body, the first reversing valve V1, the proportional pressure reducing valve V2, the linkage type manual pressure reducing valve V3, the first shuttle Valve V4, the second shuttle valve V5, the third shuttle valve V6, the second reversing valve V7 and the pressure switch V8.

[0047] The first oil port P1 of the first reversing valve V1 is connected to the first oil port P on the valve body, the second oil port T1 is connected to the second oil port T of the valve b...

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Abstract

The invention discloses an integrated control valve of a logging winch and a logging winch system. Shortcomings of possible overloading of a system and the like due to the deficiency of correlation between action control of a hydraulic circuit of an existing logging winch and braking action control of a parking and braking circuit in a braking circuit are overcome. An electromagnetic reversing valve is arranged in a control circuit of a volumetric speed regulating circuit of a hydraulic circuit of the logging winch system, a pressure relay is arranged in a parking and braking circuit of a braking circuit, and correlation between the hydraulic circuit and the parking and braking circuit is built. When the pressure of the parking and braking circuit is lost and automatic braking is caused during operation of the winch, the pressure relay is closed, control electricity of the electromagnetic reversing valve in the control circuit of the volumetric speed regulating circuit is switched on, pressure oil sources of a linkage manual reducing valve and a proportional reducing valve are cut off after reversing operation of the electromagnetic reversing valve, pressure oil outputted by each pressure oil source is unloaded, and accordingly the shortcoming of overloading of the system due to parking and braking actions of the hydraulic circuit is effectively overcome.

Description

technical field [0001] The invention relates to a logging winch in the petroleum industry, in particular to an integrated control valve of the logging winch and a logging winch system. Background technique [0002] At present, the known logging winch system includes a hydraulic circuit, a brake circuit and a winch control circuit. [0003] The hydraulic circuit includes a volume speed regulation circuit and its control circuit. Among them, the volume speed regulation circuit is mainly composed of a hydraulically controlled bidirectional variable pump and a hydraulically controlled bidirectional variable motor, and the speed regulation of the logging drawworks is realized by means of pilot hydraulic control. The pump variable speed regulation method is used in the logging working conditions that require high speed control accuracy and stability; in the high-speed working conditions for the purpose of quickly lifting the downhole instrument to the wellhead or lowering it to t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66D1/40B66D1/54B66D1/60
Inventor 马梓晋韩奋孙增明张秋松王小春
Owner CHINA NAT OFFSHORE OIL CORP
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