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Assembling method of spiral thread and capillary

An assembly method and capillary technology are applied in measuring devices, thermometers for material expansion/contraction, instruments, etc., which can solve problems such as the difficulty of threading helical wires, achieve easy promotion, improve stability, and solve difficult threading problems. Effect

Inactive Publication Date: 2017-05-10
天津航空机电有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to propose a method for assembling the helical wire and the capillary in view of the problem that the existing helical wire is difficult to penetrate into the capillary

Method used

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  • Assembling method of spiral thread and capillary
  • Assembling method of spiral thread and capillary

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0013] (1) Fix both ends of the capillary 1 with flat-nose pliers to ensure that the capillary 1 is straight and has no bent or folded parts;

[0014] (2) Slowly push the stainless steel wire 3 in from one end (the inlet end) of the capillary 1, so that the stainless steel wire 3 protrudes from the other end (the outlet end), and the stainless steel wire 3 can be accelerated by tapping the capillary 1 during the process;

[0015] (3) Use a spot welding machine to weld the spiral wire 2 and the stainless steel wire 3, and the maximum outer diameter of the welding spot must be smaller than the outer diameter of the capillary;

[0016] (4) Slowly pull the stainless steel wire 3 at the inlet end, so that the spiral wire 2 slowly enters the capillary under the traction of the stainless steel wire 3;

[0017] (5) Cut off the helical wire 2 along the end of the capillary 1 when the length of the helical wire 2 reaches the requirement;

[0018] (6) Continue to pull the stainless stee...

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PUM

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Abstract

The invention belongs to the technical field of pipeline assembling, relates to an assembling method of a spiral thread and a capillary, and provides an assembling process of a linear detector, applied to the field of aviation fire alarm / overheating detection. According to the method, a stainless steel filament is penetrated into the capillary in advance, afterwards, the stainless steel filament is connected with the spiral thread, afterwards, the stainless steel wire is slowly drawn, under the traction effect of the stainless steel wire, the spiral thread is penetrated into the capillary, and then afterwards, the stainless steel wire is truncated. Equipment for realizing the method is mainly a spot welder which is used for welding of the stainless steel wire and the spiral thread, and other steps are manually operated by personnel.

Description

technical field [0001] The invention belongs to the technical field of pipeline assembly, relates to an assembly method of a helical wire and a capillary, and is an assembly process of a wire detector applied in the field of aviation fire alarm / overheat detection. Background technique [0002] At present, the linear fire detector is a highly reliable fire detector commonly used in the world at present, which consists of a responder and a sensing line connected to it. The function of the sensing line is to convert the ambient temperature into a pressure signal and output it to the pressure conversion component. The pressure conversion component converts the pressure signal transmitted by the sensing line into an electrical signal, and outputs an alarm signal and a fault self-test signal. [0003] The sensing line is the main device to realize the function of the product, and its performance directly affects the accuracy of the product alarm. The structure of the sensing line...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01K5/08
CPCG01K5/08
Inventor 赵艳萍刘永江
Owner 天津航空机电有限公司