Simple logging cable tension measurement and tension sudden change alarm device
A sudden change alarm and tension technology, applied in the direction of tension measurement, measurement, wellbore/well components, etc., can solve the problems of increased failure rate and maintenance difficulty, complex alarm circuit lines, and many electronic components, so as to achieve easy maintenance, Inexpensive, compact and small effect
Pending Publication Date: 2021-06-15
衡水市水利科学研究院
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Problems solved by technology
However, this method of measurement and alarm has strict requirements on the accuracy, strength, and measurement range of the tension sensor, and the cost of the sensor is relatively high.
At the same time, the alarm circuit is complicated, and many electronic components are used, which increases the failure rate and maintenance difficulty when operating in harsh environments.
In addition, the tension alarm value should be set accurately and corrected in time, and the logging personnel should have high professional skills
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[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0023] see Figure 1~4 In the embodiment of the present invention, a simple logging cable tension measurement and tension mutation alarm device includes a base 12, a partition 16, a housing 15 and a tension indicator 46, and the partition 16 is vertically fixed on the top surface of the middle part of the base 12 On the front end of the base 12, a front hinge 42 that flips back and forth is installed, and the tension wheel 41 is installed on the top surface of...
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The invention discloses a simple logging cable tension measurement and tension sudden change alarm device. The device comprises a base partition plate, a shell and a tension displayer, wherein the partition plate is vertically fixed to a top face of the middle of the base, a front hinge turning forwards and backwards is installed at the front end of the base, and a tension wheel is rotatably installed on a top face of the front hinge through a tension wheel shaft; one end of the tension wheel shaft is lengthened, the shaft wall of the lengthened end is connected with a cable tension measuring device and a cable tension sudden change alarm device, a direct-current power source and a relay are installed on the lower portion of the partition plate, a shell is fixed to a cover above the partition plate, and an audible and visual alarm and a manual switch are installed on the top of the shell; the tension display is externally arranged at a position convenient for operators to observe; the device integrates measurement, alarm and control, is compact and small in structure, low in manufacturing cost, convenient to install and easy to maintain, reduces the installation requirement for a wellhead pulley and the service skill requirement for operators, and is particularly suitable for assembling of a small logging winch.
Description
technical field [0001] The invention specifically relates to the technical field of hydrological well logging, in particular to a simple tension measurement and tension mutation alarm device for well logging cables. Background technique [0002] In well logging operations, cable tension data is an important basis for operators to analyze changes in cable tension and correctly judge the operating status of instruments and cables in the well, and is crucial to normal construction and engineering accident handling. However, even if the logging equipment has cable tension data, if the operator fails to observe the sudden change in cable tension in time and continues to lower or lift the cable, accidents such as cable knotting or cable breaking may easily occur. The cable tension mutation alarm device can monitor the change of cable tension in real time, automatically judge when encountering resistance (sudden decrease of tension), encounter of jam (sudden increase of tension) an...
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IPC IPC(8): G01L5/04E21B47/00
CPCE21B47/00G01L5/04
Inventor 孙健李虎司振沄张海森张金广马增文魏士英贾金利李建华
Owner 衡水市水利科学研究院