CN102189306A

CN102189306A - Excess temperature detection method and fluid control equipment in tubing soldering

Info

Publication number: CN102189306A
Application number: CN2011100473849A
Authority: CN
Inventors: 平川尚; 中野诚一; 中川大树
Original assignee: Saginomiya Seisakusho Inc
Current assignee: Saginomiya Seisakusho Inc
Priority date: 2010-03-17
Filing date: 2011-02-23
Publication date: 2011-09-21
Anticipated expiration: 2031-02-23
Also published as: JP4951080B2; CN104070255B; CN104070255A; CN102189306B; JP2011196688A

Abstract

The present invention relates to an excess temperature detection method and a set of fluid control equipment in tubing soldering. When soldering is performed for a joint (2) and tubing (10) of an electric valve (100), whether the heat in soldering affects the components in a body part (1) can be easily determined through a simple structure. An indicator (3) is provided at a root part at a body part (1) side of the joint (2) through a mode of covering the full periphery of the joint (2). The indicator (3) is formed by the synthetic resin as thermoplastic component. While the body part (1) and the indicator (3) are cooled, soldering is performed for the joint (2) and the tubing (10). After soldering, deformation, metamorphosis, etc. of the indicator (3) are confirmed through vision. The indicator (3) can be a cylindrical component, a component which is provided with a plurality of cross grooves on the cylindrical shape, a component which is provided with a plurality of longitudinal grooves on the cylindrical shape, or an annular component. Furthermore the excess indicator can be a clamp-shaped or grid-shaped component. The excessive temperature detection method and the fluid control equipment in tubing soldering can be used for four-way switch valve and electromagnetic valve.

Description

Superfluous temperature checking method during the pipe arrangement soldering and fluid control appliance

Technical field

In the fluid control appliance that the present invention relates on the loop that is installed on fluid circulating systems such as valve gear, use, superfluous temperature checking method and fluid control appliance during the pipe arrangement soldering of the superfluous temperature when detecting the pipe arrangement of using soldered joint equipment and system.

Background technology

All the time, as the method that on the pipe arrangement of fluid circulating system, engages fluid control appliances such as valve gear, more to the method that the joint and the pipe arrangement of equipment carries out soldered joint.Brazing operation is the leading section at the joint of the tens of mm of main body of distance fluid control appliance, applies the heat that surpasses 3000 ℃ and carries out carrying out acetylene gas welding occasion, but have the possibility of the function of damaging the fluid control appliance significantly this moment.For example can cause the thermal deformation, magnetic characteristic deterioration, change in physical etc. of parts of the body interior of fluid control appliance.

In addition, following technology is disclosed: temperature treatment in order to confirm to make two pipeline heat bondings and heat bonding state and use the temperature indicating parts of color according to variations in temperature in Japanese kokai publication hei 10-185066 communique (patent documentation 1).In addition, have that TOHKEMY 2002-66782 (patent documentation 2) and Japanese kokai publication hei 6-31378 communique (patent documentation 3) are disclosed can be provided with thermo-color etc. in visual position from the outside, with the method for temperature of tone indication equipment etc.

Technical literature formerly

Patent documentation 1: Japanese kokai publication hei 10-185066 communique

Patent documentation 2: TOHKEMY 2002-66782

Patent documentation 3: Japanese kokai publication hei 6-31378 communique

As fluid circulating system cooling cycle system is arranged, when valve gear is installed on the pipe arrangement of this cooling cycle system also joint and the pipe arrangement to valve gear carry out soldering.In this brazing operation, normally the main part to valve gear cools off, and however, does not still exist because of certain does not cause heat smoothly and passes to the situation of body interior by joint.

But, produce under the situation of conducting heat in the part of joint, with regard to the method for the temperature indicating parts that utilize above-mentioned patent documentation 1 to 3 or thermo-color,, then can not detect its heat transfer if having temperature indicating parts etc. at the position of conducting heat that do not produce of joint.And, with regard to the temperature indicating parts or thermo-color of patent documentation 1 to 3,, exist the setting of detected temperatures etc. to need the problem of labour and time and so on though can judge temperature self.

Summary of the invention

Problem of the present invention is, in the time of can easily judging on the joint of fluid control appliance the soldering pipe arrangement with simple structure, the heat the during soldering whether parts of the body interior of convection cell control appliance impacts.

Superfluous temperature checking method during the pipe arrangement soldering of scheme one, after the pipe arrangement that the joint fluid circulating system is used on the above-mentioned joint of the fluid control appliance with main part and joint, detection is to the superfluous temperature of aforementioned body portion, it is characterized in that, in above-mentioned fluid control appliance, root portion in the aforementioned body portion side of above-mentioned joint, mode with full week of covering above-mentioned joint is installed thermoplastic component in advance, after above-mentioned soldering, according to the above-mentioned superfluous temperature of the state-detection of above-mentioned thermoplastic component.

The fluid control appliance of scheme two, use in the superfluous temperature checking method when above-mentioned pipe arrangement soldering, have main part and the joint that is used for connecting pipings, described fluid control appliance is characterised in that, in the root portion of the aforementioned body portion side of above-mentioned joint, thermoplastic component is installed in the mode in full week of covering above-mentioned joint.

Effect of the present invention is as follows.

The superfluous temperature checking method during according to the pipe arrangement soldering of scheme one or the fluid control appliance of scheme two, root portion in the main part side of the joint of above-mentioned fluid control appliance, mode with full week of covering joint is installed thermoplastic component in advance, therefore, after soldering, if on thermoplastic component, be not out of shape, go bad etc., can confirm that then superfluous heat is not delivered to the main part of fluid control appliance, has carried out soldering no abnormally; If distortion, rotten etc. is arranged on thermoplastic component, then can confirm superfluous heat be delivered to the main part of fluid control appliance and on main part, taken place unusual, the influence that the heat in the time of can easily confirming soldering causes.

Description of drawings

Fig. 1 is that expression has been carried out the state of brazing operation well to the motor-driven valve of embodiments of the present invention and do not carried out the figure of the state of brazing operation well.

Fig. 2 is the stereogram of the motor-driven valve of embodiment.

Fig. 3 is the figure of detailed structure of indicator of the embodiment of presentation graphs 1 and Fig. 2.

Fig. 4 is the figure of the indicator that is formed with a plurality of translots in the expression embodiment.

Fig. 5 is the figure of the indicator that is formed with a plurality of pods in the expression embodiment.

Fig. 6 is the figure of the annular indicator in the expression embodiment.

Fig. 7 is the indicator of the clip shape in the expression embodiment and the figure of latticed indicator.

Fig. 8 be expression in the embodiment as the four-port conversion value of fluid control appliance and the figure of magnetic valve.

Among the figure:

The 1-main part, 2-joint, 3-indicator, 100-motor-driven valve (fluid control appliance), 200-four-port conversion value (fluid control appliance), 300-magnetic valve (fluid control appliance).

The specific embodiment

Followingly embodiments of the present invention are described with reference to accompanying drawing.Embodiment is that the fluid control appliance is that motor-driven valve is also with the example of this motor-driven valve soldering on the pipe arrangement of cooling cycle system (fluid circulating system).Fig. 1 is that expression has been carried out the state (Fig. 1 (A)) of brazing operation well to the motor-driven valve of embodiments of the present invention and do not carried out the figure of the state (Fig. 1 (B)) of brazing operation well.Fig. 2 is the stereogram of the motor-driven valve of embodiment, and Fig. 2 (A) is the state before indicator 3 is installed in expression, and Fig. 2 (B) is the state after indicator 3 is installed in expression.Fig. 3 is the figure of detailed structure of major part of the indicator 3 of expression embodiment, Fig. 3 (A) is the side view of the installment state of indicator 3, Fig. 3 (B) is the side view of indicator 3, and Fig. 3 (C) is the upward view of indicator 3, and Fig. 3 (D) is the longitudinal section of indicator 3.

Motor-driven valve 100 has main part 1 and two joints 2.Periphery at main part 1 is equipped with not shown stator unit, accommodates the rotor that constitutes stepper motor with stator unit in the inside of main part 1.And, be equipped with rotation by rotor in the inside of main part 1 and make valve body with respect to the O-ring seals of directly moving resinous thread mechanism of valve seat and seal valve chamber etc. etc.Whether and during soldering pipe arrangement 10, Ruo Gaore is delivered to the inside of this main part 1 on joint 2, then can cause the deterioration, change in physical of distortion, the magnetic characteristic of the various mentioned components of main part 1 inside etc., therefore detect because of soldering this situation to have taken place.

The influence of the heat when detecting above-mentioned soldering is separately installed with indicator 3 on joint 2.As shown in Figure 3, indicator 3 is parts of drum, is made of the synthetic resin as thermoplastic component.As shown in Figure 2, indicator 3 is installed in the root portion A of main part 1 side of joint 2 respectively in the mode in the full week of covering joint 2, promptly, the end 21 of joint 2 be with respect to pipe arrangement 10 by the bonding part of soldering, the then the most approaching end 21 from joint 2 of indicator 3 away from main part 1 install.Also have, shown in Fig. 2 (B), a side joint 2 is bent processing after indicator 3 has been installed.

Fig. 1 represents the appearance of a side joint 2 with the brazing operation of pipe arrangement 10, and brazing operation is following to carry out.Clean the composition surface of joint 2 and pipe arrangement 10, the coating solder flux also is assembled in joint 2 on the pipe arrangement 10.By a part, utilize the bonding part of 20 pairs of pipe arrangements of burner 10 and joint 2 to heat thereby cool off this main part 1 and indicator 3 on one side with main body covered 1 of wet loose thread etc. and indicator 3.Also have, burner 20 applies and surpasses 3000 ℃ heat carrying out acetylene gas welding occasion.And, melt solder, cooling afterwash etc. in this bonding part.Also having, as the method for cools body portion 1 and indicator 3, also can be that main part 1 and indicator 3 are dipped into method in the water of tank etc.

After finishing this brazing operation, by the shape of Visual Confirmation indicator 3, if on indicator 3, be not out of shape, go bad etc., then soldering is good.If image pattern 1 (B) is such, under the situation of the part cooling of not carrying out main part 1 and indicator 3 because of certain smoothly, produce to joint 2 from the bonding part and to conduct heat, if this heat passes to the part of indicator 3, then can on this indicator 3, produce distortion, go bad etc.And the possibility of inside that this heat is delivered to main part 1 is also high.Therefore, if distortion, rotten etc. is arranged on indicator 3, then brazing operation is bad, pulls down motor-driven valve 100, carries out identical operation with other motor-driven valve 100.

In addition, under the situation of having finished brazing operation well, the indicator 3 of motor-driven valve 10 both can former state be installed on the joint 2, also can remove.Installed in former state under the situation of indicator 3, this motor-driven valve 10 also can confirm to have carried out well the situation of brazing operation afterwards.

Fig. 4～Fig. 6 is the figure of other examples of expression indicator 3, and in each figure, figure (A) is the side view of the installment state of indicator 3, and figure (B) is the side view of indicator 3, and figure (C) is the upward view of indicator 3, and figure (D) is the longitudinal section of indicator 3.These indicators 3 also are made of the synthetic resin as thermoplastic component.

The indicator 3 of Fig. 4 is the members that are formed with a plurality of translots 31 at a side's of the main body of general cylindrical shape shape edge along radial direction.This indicator 3 makes a method, edge that does not form translot 31 towards main part 1 side, and is installed on the joint 2.The indicator 3 of Fig. 5 is the members that longitudinally are formed with a plurality of pods 32 in the periphery of the main body of general cylindrical shape shape.If the pod 32 of the translot 31 of image pattern 4 or Fig. 5 forms groove like that, this state of identification easily indicator 3 makes the situation that a part melted because of heat under then.The indicator 3 of Fig. 6 is annular members of circular ring type.According to the indicator 3 of this Fig. 6, even after bending machining has been implemented in butt joint 2, also can install.

Fig. 7 is the figure of another example of expression indicator 3.The indicator 3 of Fig. 7 (A)～Fig. 7 (C) is shapes of the clip shape that is made of the synthetic resin as thermoplastic component.Also have, the state of the indicator 3 of Fig. 7 (B) has been installed in Fig. 7 (A) expression, as the shape of clip, also can be the such shape of Fig. 7 (C).Even these indicators 3 also can be installed after bending machining has been implemented in butt joint 2.And, can utilize the elasticity of resin of circular arc portion of the shape of clip shape to fix indicator 3.The indicator 3 of Fig. 7 (D) is the latticed shapes that are made of the synthetic resin as thermoplastic component, also can install after bending machining has been implemented in butt joint 2 by stretching.And, can utilize the elasticity of latticed shape and resin to fix indicator 3.

Fig. 8 is the figure of other examples of expression fluid control appliance, and Fig. 8 (A) is the example of four-port conversion value, and Fig. 8 (B) is the example of magnetic valve.The four-port conversion value 200 of Fig. 8 (A) has main part 1 and four joints 2.Accommodate not shown guiding valve, piston, valve seat, O-ring seals etc. in the inside of main part 1.And, on each joint 2, be separately installed with indicator 3.The magnetic valve 300 of Fig. 8 (B) has main part 1 and two joints 2.Accommodate not shown plunger, plunger tube, attractor, valve seat, O-ring seals ring etc. in the inside of main part 1.And, on each joint 2, be separately installed with indicator 3.In addition, as the indicator 3 of Fig. 8 (A) and the indicator 3 of Fig. 8 (B), can use each indicator 3 of Fig. 1 to Fig. 7.

The indicator 3 of above embodiment, as material, use be thermoplasticity synthetic resin, but, also can adopt following scheme about the detailed content of material.During soldering, because external temperature than internal temperature height, therefore also can be used for indicator 3 with the resin material identical with the employed material of the internal part of main part 1.In addition, in order to improve safety coefficient, can also use fusing point than the low material of the employed material of internal part.For example, use at internal part under the situation of PPS, PBT or PET material can be used for indicator 3.

Claims

1. the superfluous temperature checking method during a pipe arrangement soldering engages on the above-mentioned joint of the fluid control appliance with main part and joint after the pipe arrangement that fluid circulating system uses, and detects the superfluous temperature to aforementioned body portion, it is characterized in that,

In above-mentioned fluid control appliance, root portion in the aforementioned body portion side of above-mentioned joint, mode with full week of covering above-mentioned joint is installed the indicator that is made of thermoplastic component in advance, after above-mentioned soldering, according to the above-mentioned superfluous temperature of the state-detection of above-mentioned indicator.

2. fluid control appliance uses in the superfluous temperature checking method when the described pipe arrangement soldering of claim 1, has main part and is used for the joint of connecting pipings, and described fluid control appliance is characterised in that,

In the root portion of the aforementioned body portion side of above-mentioned joint, the indicator that is made of thermoplastic component is installed in the mode in full week of covering above-mentioned joint.