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Switch structure and explosion-proof device

A technology of switch structure and switch bracket, which is applied in the direction of electric switch, permanent magnet reed switch, magnetic/electric field switch, etc., to achieve the effect of reducing the distance

Active Publication Date: 2016-06-29
YAMATAKE HONEYWELL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, although not shown in the figure, circuits and electronic components to be protected are housed in the explosion-proof container 10

Method used

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  • Switch structure and explosion-proof device
  • Switch structure and explosion-proof device
  • Switch structure and explosion-proof device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] [Example 1: Switch structure]

[0032] figure 1 It is a diagram showing main parts of an embodiment (Embodiment 1) of the switch structure according to the present invention. In this figure, 1 is an explosion-proof container, 2 is a magnetic sensor disposed inside the explosion-proof container 1, 3 is a magnet that generates a magnetic field, and the container wall 1a that isolates the inside and outside of the explosion-proof container 1 is a non-magnetic body. In addition, the magnet 3 is provided on the outside of the explosion-proof container 1 so as to be able to move forward and backward corresponding to the magnetic sensor 2 . It should be noted that in the explosion-proof container 1, although not shown in the figure, circuits and electronic components to be protected are housed.

[0033] In this switch structure, in the container wall (non-magnetic body) 1a between the magnetic sensors 2-1 to 2-4 and the magnets 3-1 to 3-4, corresponding to the magnetic sens...

Embodiment 2

[0040] [Example 2: Explosion-proof equipment]

[0041] figure 2 It is an external perspective view showing an example (Example 2) of an explosion-proof device having a switch structure according to the present invention. exist figure 2 , shows a positioner that controls the opening of an air-operated regulating valve (valve) as a type of explosion-proof equipment. In the positioner, in order to be able to use it in an explosive gas atmosphere, it is necessary to have sufficient explosion-proof performance according to explosion-proof standards.

[0042] Figure 4 A block diagram of the internal structure of the positioner 100 is shown in . In this figure, 11 is an I / F (interface) terminal; 12 is a circuit module having a CPU (Central Processing Unit: central processing unit) and memory, etc.; 13 is an electro-pneumatic converter; The nozzle back pressure P of device 13 N Amplified as the output air pressure P out 15 is an angle sensor, which detects the operating posi...

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PUM

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Abstract

Magnetic bodies (4-1 to 4-4) are provided, in correspondence with magnetic sensors (2-1 to 2-4), in a container wall (non-magnetic body) (1a) that is between the magnetic sensors (2-1 to 2-4) and magnets (3-1 to 3-4). In this switch structure, the magnetic field from the outside magnets (3) acts on the magnetic sensors (2) via the magnetic bodies (4) provided in the container wall (1a).

Description

technical field [0001] The present invention relates to a switch structure for enabling / closing a magnetic sensor arranged inside a closed container from the outside of the closed container, and an explosion-proof device provided with the switch structure. Background technique [0002] Conventionally, in explosion-proof equipment such as pressure transmitters, an airtight container is used as an explosion-proof container, a magnetic sensor is arranged inside the explosion-proof container, and a switch structure is used to turn on / off the magnetic sensor from the outside of the airtight container. (For example, refer to Patent Document 1). [0003] Figure 6 The main parts of existing switch constructions used in explosion-proof equipment are shown in . In this figure, 10 is an explosion-proof container, 20 is a magnetic sensor arranged inside the explosion-proof container 10, 30 is a magnet generating a magnetic field, and a container wall 10a separating the inside and outs...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01H36/00H01H13/00H01H13/06
CPCH01H9/042H01H36/00H01H36/0006H01H36/004H01H36/02H01H2223/002H01H2235/01
Inventor 本田善郎渡边隆
Owner YAMATAKE HONEYWELL CO LTD
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