KR20190073602A - Attachment structure of sheath thermocouple, method of attaching pad and sheath thermocouple used for its attaching structure - Google Patents

Attachment structure of sheath thermocouple, method of attaching pad and sheath thermocouple used for its attaching structure Download PDF

Info

Publication number
KR20190073602A
KR20190073602A KR1020197017565A KR20197017565A KR20190073602A KR 20190073602 A KR20190073602 A KR 20190073602A KR 1020197017565 A KR1020197017565 A KR 1020197017565A KR 20197017565 A KR20197017565 A KR 20197017565A KR 20190073602 A KR20190073602 A KR 20190073602A
Authority
KR
South Korea
Prior art keywords
groove portion
pad
sheath thermocouple
groove
thermocouple
Prior art date
Application number
KR1020197017565A
Other languages
Korean (ko)
Other versions
KR102025347B1 (en
Inventor
고조 히라노
신이치 요시나가
쇼지 나카바야시
Original Assignee
야마리산교오 가부시기가이샤
가부시키가이샤 야마리 센서 시스템
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 야마리산교오 가부시기가이샤, 가부시키가이샤 야마리 센서 시스템 filed Critical 야마리산교오 가부시기가이샤
Publication of KR20190073602A publication Critical patent/KR20190073602A/en
Application granted granted Critical
Publication of KR102025347B1 publication Critical patent/KR102025347B1/en

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
    • G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)

Abstract

[PROBLEMS] To provide a thermoelectric module capable of suppressing the number of components and having a sufficient strength to stably support the sheath thermocouple without being pulled out of the pad even if bending, twisting, or tensile occurs, And an attachment structure of the sheath thermocouple which is excellent in workability of attaching and detaching.
A recessed groove 91 extending in the circumferential direction is formed in the sheath thermocouple 9 and the locking groove portion 3 is formed in the locking groove portion 3 3 includes a first groove portion 31 opened to the outside in the radial direction and having a relatively wide width and a groove 12 extending inwardly formed with a second groove portion 32 having a relatively narrow width, The sheath thermocouple 9 is prevented from moving toward the axial base end side by stopping the stopper member 5 mounted on the inner sheath thermocouple 9 through the portion opened to the outside of the sheath thermocouple 9, .

Figure P1020197017565

Description

Attachment structure of sheath thermocouple, method of attaching pad and sheath thermocouple used for its attaching structure

The present invention relates to an attachment structure for attaching a sheathed thermocouple to a temperature measurement object surface with a pad therebetween, and a method of attaching the pad and sheath thermocouple used in the attachment structure.

As this type of attaching structure, a thermocouple with a pad is prepared by inserting a heat sensitive portion of a tip of a sheathed thermocouple to a metal plate (pad) having a thickness of about 3 to 5 mm, fixing the thermocouple, , And the pad at the tip end is welded to the surface to be thermally-controlled, so that a structure is conventionally employed (see, for example, Fig. 5 of Patent Document 1).

And a thermosensitive material layer formed on the surface of the thermosensitive material layer, the thermosensitive material layer being formed on the surface of the thermosensitive material layer, A grip portion for gripping the sheath thermocouple so as to be removable is formed on the outside of the inlet portion for receiving the sheath thermocouple in the inserting / attaching groove, and the sheath thermocouple is provided with a pad Wherein a thermo-sensitive portion is attached to the insertion / attachment groove and attached to the insertion / attachment groove, and a portion protruding outside the entrance portion is held by the grip portion. ).

According to the attachment structure of Patent Document 2, there is no need to weld and fix the sheath thermocouple to the pad, so that the puncture of the sheath pipe and the moisture absorption (sucking) due to the sheath pipe, measurement error, In addition to this, it becomes unnecessary to perform post-processing on the lower surface side, which is the contact surface with the surface to be thermally measured, so that the manufacturing cost is reduced, responsiveness is maintained, and the quality is stabilized. In addition, since only the pad is fixed to the surface to be thermocouple first by welding or the like, the sheath thermocouple is not disturbed during the work, and workability is remarkably improved even when it is attached to a complicated boiler tube. Since there is no thermocouple in the welding operation, thermal damage can be avoided. In addition, in the case of exchanging the thermocouple, only the sheath thermocouple that can be attached to and detached from the pad can be exchanged, and the exchange cost can be remarkably reduced.

However, the attachment structure of Patent Document 2 has a structure in which a tubular body as a separate member is fixed to an inlet portion of the pad body as a grip portion, and a substantially U-shaped gripping member is mounted over the tubular body, There is a possibility that the fixed portion may be broken when a large force other than the expected force from the sheath thermocouple acts on the tubular body. In addition, when bending, twisting, tensile, or the like occurs in the copper sheath thermocouple, the sheath thermocouple moves inside the tubular body. However, the gripping member mounted on the sheath thermocouple has a wall portion of the tubular body through the through- The grip member is pushed by the wall portion of the tubular body and is opened when the sheath thermocouple is moved, so that the sheath thermocouple may escape from the pad due to deviation from the sheath thermocouple.

As described above, the gripping members mounted over the tubular body are set to some lengths to some extent in order to prevent their coming off. However, the gripping member having such a long gripping piece has a problem that the tip end of the gripping piece comes into contact with the surface to be thermally- Therefore, it can not be mounted toward the vertical direction of the pad body with respect to the tubular body, and is structured to be mounted in a direction parallel to the upper and lower surfaces. Such mounting may result in inferior workability in the field, resulting in reduced efficiency or poor mounting.

: Japanese Patent Application Laid-Open No. 1-145537 : Japanese Unexamined Patent Application Publication No. 2016-156788

SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned problem in view of the above-mentioned circumstances, in an attachment structure in which a sheath thermocouple is attached to a pad previously fixed by welding or the like, Even if a large force other than that expected from the sheath thermocouple acts, the pad is not broken and has sufficient strength so that even if bending, twisting, or tensile occurs in the sheath thermocouple, And a method of attaching a pad and a sheath thermocouple used in the structure of the sheath thermocouple can be provided.

The present invention includes the following inventions.

(1) An attachment structure for attaching a sheath thermocouple to a surface to be thermocomposed with a pad sandwiched therebetween, the thermocompression unit of the sheath thermocouple being inserted into the pad fixed in a state in which the contact surface is in contact with the thermocompression target surface, A locking groove portion for receiving an area on the proximal end side of the region to be inserted into the insertion / attachment groove portion of the sheath thermocouple and locking the sheath thermocouple so as to be detachable in the axial direction is formed, Wherein a recessed groove extending in the circumferential direction is formed so as to be detachable from the radial direction by a substantially C-shaped slip-off preventing member at a predetermined position of an area to be received in the groove, Which is opened to the outside by a relatively large width And a groove portion having a relatively narrow width at an inner side close to the insertion / attachment groove portion, the groove portion being formed at the outer side and widened inwardly, and the portion of the locking groove portion, which is open to the outside, Wherein the stop member is attached in such a state that the sheath thermocouple can not move to the axial base end side by stopping the stop member in contact with the inner wall surface of the groove widened inward of the locking groove portion. .

(2) The sheath thermocouple described in (1) above, wherein the relatively wide groove portion of the locking groove portion is opened to the outside on a surface opposite to the contact surface and the slip prevention member is mounted through the opening portion, .

(3) Inwardly extending grooves constituting the locking groove portion include a first groove portion having a relatively wide width for receiving the stopper member, and a second groove portion formed continuously with the first groove portion and having an inner wall surface formed along the outer circumferential surface of the sheath of the sheath thermocouple And a second groove portion extending in the axial direction by a predetermined length and having a relatively narrow width, wherein the slip prevention member is provided with a stepped portion formed on a boundary between the first groove portion and the second groove portion in the inner wall surface of the inwardly- (1) or (2) above.

(4) The pad is formed of a plate material having an upper surface and a lower surface which are substantially parallel to each other, the lower surface serving as the contact surface, and a groove extending parallel to the contact surface as the insertion / (1) to (3), wherein the groove is opened to the edge portion continuously to the pad edge portion of the insertion / attachment groove portion and the relatively wide groove portion is opened to the outside of the pad The attached structure of the sheath thermocouple described.

(5) The attachment structure of the sheath thermocouple described in any one of (1) to (4) above, wherein the relatively wide groove portion is an upper and lower communication groove opened to the upper and lower surfaces of the pad.

(6) The attachment structure of a sheath thermocouple as described in any one of (1) to (5) above, wherein the inwardly widened groove forming the locking groove portion is a vertical groove communicating with the pad upper and lower surfaces.

(7) A pad for use in the attachment structure of the sheathed thermocouple described in any one of (1) to (6), wherein the thermosensitive part of the sheath thermocouple is inserted and attached along the axial direction, A locking groove portion for receiving a region on the proximal end side of the region to be inserted into the insertion / attachment groove portion and locking the sheath thermocouple so as to be detachable in the axial direction is formed, Wherein the groove has a relatively wide groove portion for receiving the stopper member and a relatively narrow groove portion formed on the inner side closer to the insertion / attachment groove portion, and a groove formed on the outer side and widened inward, And a thermosensitive part is inserted and attached to the insertion / attachment groove, Wherein the stopper member mounted on the concave groove through the scattered portion is attached in a state in which it is unable to move to the axial proximal side side by stopping in contact with the groove inner wall extending inward of the locking groove portion.

(8) A method of attaching a sheathed thermocouple to a surface to be thermocomposed with a pad sandwiched therebetween, comprising the steps of: inserting the thermosensitive part of the sheath thermocouple along the axial direction into the pad, A locking groove portion for receiving an area on the proximal end side of the region to be inserted into the insertion / attachment groove portion of the sheath thermocouple and locking the sheath thermocouple so as to be detachable in the axial direction is formed, Wherein a recessed groove extending in the circumferential direction is formed so as to be detachable from the radial direction by a substantially C-shaped slip-off preventing member at a predetermined position of an area to be received in the groove, Which is opened to the outside by a relatively large width A step of fixing the pad in a state in which the contact surface is in contact with the surface to be temperature-monitored, the groove being formed on the inner side close to the insertion / attachment groove and having a relatively narrow groove portion formed on the outer side and widened inward; , The thermo-sensitive portion of the sheath thermocouple is inserted into the inserting / attaching groove portion of the fixed pad along the axial direction, and an area closer to the proximal end than a region of the sheath thermocouple inserted into the inserting / And a step of inserting a substantially C-shaped slip-off preventing member into the recessed groove of the sheath thermocouple toward the inner sheath thermocouple through a portion opened to the outside of the relatively wide groove portion of the locking recessed portion, And a step of mounting to be detachable from the radial direction And the sheath thermocouple is attached in a state in which the sheath thermocouple is unable to move toward the axial base end side by stopping the stopper member mounted on the sheath thermocouple contacting and contacting the inner wall surface of the groove widened inward of the locking groove portion. Of the sheath thermocouple.

(9) The thermoelectric module according to any one of (1) to (9), wherein the sheath thermocouple is formed in a shape bent at a position closer to the proximal end than a region to be mounted on the pad, Rotating the entire sheath thermocouple around an axis and bringing a region on the proximal end side of the bent portion of the sheath thermocouple into contact with the object to be thermocontacted; a step of fixing the region on the proximal end of the sheath thermocouple, (8), wherein the step (c) comprises the steps of:

(10) The step of fixing the pad in a state in which the contact surface is in contact with the surface to be temperature-monitored is a plate-like attaching jig, wherein the returning of the attaching jig having the returning portion of a shape bent in the plate- A step of attaching the attaching jig to the pad by inserting the attaching portion into a relatively wide groove portion of the locking groove portion of the pad through the opening portion and pressing the same on the inner wall of the groove portion; The method of attaching a cis-thermocouple as described in (9) above, comprising the steps of: placing the pad in a state in which the contact surface is in contact with the surface to be thermally-contacted; and fixing the pad with the thermosensitive surface to the thermosensitive object surface.

(11) The step of fixing the position-assigned pad to the surface to be thermally-controlled includes a step of temporarily fixing the pad to the surface to be thermally-controlled by spot welding while holding the other end side of the attaching jig, (10). The method of claim 10, wherein the step (c) comprises the steps of:

According to the present invention as described above, since the pad has the locking groove portion for locking the insertion / attachment groove portion and the sheath thermocouple so as to be detachable in the axial direction, Since the structure is not fixed to the pad body, the number of parts can be reduced, and the cost can be reduced. Further, the locking groove formed in a part of the pad has a sufficient strength as compared with a conventional cylindrical body fixed to the pad body, so that even if a large unexpected force is applied from the sheath thermocouple, it is not damaged and stably supports the sheath thermocouple.

Further, the locking groove portion has a relatively wide groove portion which is open to the outside in the radial direction and which has a relatively wide width for receiving the stop member, and a groove portion having a relatively narrow width is formed on the outer side, And a slip prevention member mounted on the inner sheath thermocouple via a portion opened to the outside of the locking groove portion comes into contact with the inner wall surface of the groove widened inward of the locking groove portion and stops so that the sheath thermocouple rotates in the axial direction The stopper member is firmly and integrally engaged with the sheath thermocouple at the inside of the locking groove portion so that even if the sheath thermocouple is bent, twisted, or pulled, Do not get stuck out of the sheath thermocouple. A, a firm engagement of the thermocouple sheath is maintained. Therefore, it is possible to stably support the sheath thermocouple against the pad.

Further, since the retaining member is not opened by the force exerted from the tubular member like the conventional holding member, there is no need to form the long holding piece, and therefore, the mounting direction is also the direction perpendicular to the contact surface of the pad Down direction from the upper surface to the lower surface (contact surface)), and it is possible to improve workability in the field. Specifically, in the case where the relatively wide groove portion of the locking groove portion is opened to the outside on the surface opposite to the contact surface (the upper surface in the embodiment) and the above-mentioned stopper member is mounted through the opening portion, The workability of desorption of the sheath thermocouple is remarkably improved.

And an inner wall extending in the axial direction of the sheath thermocouple along the outer circumferential surface of the sheath thermocouple in a radial direction of the sheath thermocouple, wherein the grooves extending inwardly constituting the locking groove portion include a first groove portion having a relatively wide width, Wherein the stopper member is in contact with a stepped portion formed at a boundary between the first groove portion and the second groove portion in the inner wall surface of the inwardly widened groove, It is possible to support the sheath thermocouple together with the dropout preventing member with a simple structure.

Wherein the pad is formed of a plate material having a lower surface serving as the contact surface and having substantially parallel upper and lower surfaces, and a groove extending parallel to the contact surface as the insertion / attachment groove portion is formed in a central portion of the pad, And the groove is opened to the edge portion continuously to the pad edge portion of the insert / attachment groove portion, and the relatively wide groove portion is opened to the outside on the pad surface. Thus, the structure of the sheath thermocouple The attachment structure can be realized.

In addition, in the case where the relatively wide groove portion is the vertical groove communicating with the upper and lower surfaces of the pad, the manufacturing cost can be further reduced.

Further, in the case where the entire inwardly extending groove constituting the locking groove portion is an up-and-down communication groove opened to the upper and lower surfaces of the pad, the manufacturing cost can be further reduced.

The method of mounting a sheath thermocouple according to claim 1, wherein the sheath thermocouple is formed in a bent shape at a position closer to the proximal end than a region where the sheath thermocouple is mounted on the pad, and after the sheath thermocouple is mounted on the pad, A step of rotating the entirety of the sheath thermocouple about the axis of the region to be inserted and brought into contact with the region on the proximal end side of the bent portion of the sheath thermocouple along the object to be thermocontacted; Since the proximal end side of the bent sheath thermocouple can be separated from the temperature measurement object and can be easily supported by the hand, the workability is remarkably improved and the sheath thermocouple can be supported on the pad After installation, the sheathed thermocouple should be placed at a temperature It can be held in contact with the object to be stably supported. The reason why the sheath thermocouple is bent as described above and the mounting operation can be facilitated is that it is possible to rotate the sheath thermocouple against the pad after mounting so that the sheath thermocouple can follow the surface to be thermocouple.

In the conventional structure, it is impossible to rotate the sheath thermocouple after mounting the pads on the pad, because the holding member is removed and the sheath thermocouple is removed. Which is first possible by the attachment structure of the present invention. The bending of the sheath thermocouple improves workability as described above, and the bending portion absorbs the force such as tensile force of the sheath thermocouple even after mounting, and the stable supporting state with the pad is maintained.

And the step of fixing the pad in a state in which the contact surface is in contact with the surface to be temperature-monitored, the step of attaching the pad, A step of attaching the attaching fixture to the pad by inserting the pad into a relatively wide groove portion of the pad through an opening portion and pressing the pad against the inner wall of the groove portion; And a step of fixing the pad provided with the position to the object to be temperature-measuring, even if the object to be temperature-monitored is a narrow space difficult to work with, To stably position the pad on the surface to be thermally-controlled It is possible to securely and easily perform the fixing work by welding or the like in a state where the work is performed, thereby improving the working efficiency and the quality in the fixed state. Further, by fixing the pad to the object to be thermally-controlled and then attaching the sheath thermocouple to the pad, the attaching jig is inserted into the locking groove portion to be in the state as it is attached, so that the locking groove portion, It is possible to prevent the ingress of dust or coating material into the groove portion, and it is possible to maintain good thermal conductivity with the sheath thermocouple.

Specifically, the step of fixing the pad provided with the position to the surface to be thermally-controlled includes a step of temporarily fixing the pad to the surface to be thermally-controlled by spot welding while grasping the other end side of the attachment fixture, And the step of fixing the pad to the object to be temperature-monitored by total peripheral welding. Thus, the pad can be efficiently welded to the surface to be temperature-monitored and fixed.

1 is a perspective view showing an attachment structure of a sheath thermocouple according to a representative embodiment of the present invention.
Fig. 2 is a front view of the same attachment structure as viewed from the top surface of the pad. Fig.
3 is a cross-sectional view of the same.
4 is an exploded perspective view of the copper mounting structure.
Fig. 5A is a front view of the pad used in the copper mounting structure as seen from the upper surface side. Fig.
5B is a bottom view of the pad seen from the bottom (contact surface) side.
5C is a side view of the pad shown in the side view of the locking groove.
6A is a perspective view showing the copper pad.
6B is a perspective view of the pad body as viewed from the contact surface side.
Fig. 7A is an explanatory diagram showing a procedure of attaching the sheath thermocouple. Fig.
Fig. 7B is an explanatory diagram showing a procedure for attaching the copper sheath thermocouple. Fig.
8 is a front view showing a modified example of the pad.
Fig. 9A is an explanatory view showing the attachment of the attachment jig to the pad. Fig.
Fig. 9B is an explanatory view showing a manner of attaching the copper attaching jig to the pad. Fig.
10A is an explanatory view showing a state in which a pad is fixed to a surface to be temperature-monitored using an attaching jig.
Fig. 10B is an explanatory view showing a state in which the pad is fixed to the surface to be temperature-monitored using a copper attaching jig.
11 is a cross-sectional view showing a state in which the pad is fixed to the surface to be temperature-monitored using an attachment fixture.

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The sheath thermocouple attaching structure S according to the present invention is a structure in which the sheath thermocouple 9 is attached to the side of the temperature side to be measured with the pad 1 sandwiched therebetween To the object surface (80). The pad 1 is fixed in a state in which the contact surface 10 is in contact with the temperature measurement target surface 80. [ As shown in Figs. 5A to 5C and Figs. 6A and 6B, the pad 1 is constituted by a plate material (plate material) whose lower surface serves as the contact surface 10 and has substantially parallel upper and lower surfaces. In this example, And a curved surface parallel to the temperature measurement target surface 80 so as to be in close contact with the temperature measurement target surface 80 of the tube. The contact surface 10 is appropriately set in accordance with the shape of the surface to be measured. The upper and lower surfaces may not be parallel.

The pad 1 may be formed by bending a flat plate material, but is not limited thereto. It is also preferable that the lower surface side of the flat plate material is cut into a concave curved surface and the upper surface thereof is made flat. The material of the pad 1 is preferably made of the same material as that of the boiler tube in this example so as to avoid the disturbance of the temperature distribution due to the difference in the thermal conductivity, but other materials may be employed. In this example, for example, stainless steel is used, but various metal materials can be used depending on the place and purpose of use, and the thickness thereof can be appropriately adjusted.

The contact surface 10 of the pad 1 is composed of a concave curved surface which is in close contact with the outer wall surface of the boiler tube. The fixing of the pad 1 to the temperature measurement target surface 80 is performed by fixing three sides except for the side on the proximal end side of the locking groove part 3 of the pad 1 to the side of the side surface 80 As shown in Fig. However, the pad 1 may be fixed to the surface 80 to be thermally-controlled by means other than welding.

The sheath thermocouple 9 is provided with a thermocouple wire made of a different kind of metal and a thermocouple wire made of a metal such as a thermocouple wire, Thermocouples can be widely used. For example, the metal sheath may be an austenitic stainless steel (SUS304, SUS316, etc.) or a nickel chrome heat-resistant alloy (inconel). As the built-in thermocouple wire, for example, a nickel-chrome alloy can be used for the positive side wire and a nickel alloy can be used for the negative side wire. For example, MgO or Al 2 O 3 can be used as the electric insulating material to be filled in the sheath.

Although the warm contact portion of the thermocouple wire is formed on the inner side of the sheath in the tip portion of the tip portion, the contact is not in contact with the metal sheath but is formed by welding to the metal sheath And the one integrated with the tip of the sheath at the time of sealing the tip can be used. The shape of the metallic sheath may be a semi-cylindrical shape, an elliptical shape or the like other than the circular shape.

2 and 4, the sheath thermocouple 9 has a concave groove 91 extending in the circumferential direction at a predetermined position of a region R2 received by the locking groove portion 3 of the pad 1 And a substantially C-shaped pullout preventing member 5 is attached to the concave groove 91 so as to be detachable from the radial direction.

The pad 1 is provided with an insertion / attachment groove portion 2 into which the sensing portion 90 of the sheath thermocouple 9 is inserted along the axial direction and an inserting / attaching groove portion 2 into which the insertion / attachment groove portion 2 of the sheath thermocouple 9 is inserted A locking groove 3 for receiving the region R2 on the proximal end side of the region R1 is formed to lock the sheath thermocouple 9 in the axial direction.

The inserting / attaching groove portion 2 has grooves extending in parallel with the contact surface 10 of the pad 1 so as to make contact with the outer surface of the sheath of the thermosensitive portion 90 of the inserted sheath thermocouple 9 as wide as possible, And its axis is a groove parallel to the contact surface 10. In this example, as shown in Figs. 5A to 5C and Figs. 6A and 6B, the groove is formed at the central portion of the pad and extends in parallel with the contact surface 10.

The inner wall surface of the insertion / attachment groove portion 2 is connected to the warming portion 90 of the sheath thermocouple 9 in order to transmit the heat transmitted from the temperature measurement object surface 80 to the pad 1 without clogging the temperature sensing portion 90. [ Is set to a dimension that makes contact with the outer circumferential surface of the sheath. Further, the insertion / attachment groove portion 2 is a groove which is opened to the contact surface 10. Thus, the outer circumferential surface of the sheath of the warming unit 90 can be brought into direct contact with the side surface 80 to be thermally-controlled through the opening, and the pad can be made thinner.

The insertion / attachment groove portion 2 may be formed not only on the side (lower surface side) of the contact surface 10 of the pad 1 but also on the upper surface. As a result, the pad 1 can be made thinner. Further, the tip of the sheath thermocouple may be inclined so as to be closer to the surface 80 to be thermally-controlled.

As shown in Figs. 5A to 5C and Figs. 6A and 6B, the locking groove portion 3 is a groove that is continuous to the insertion / attachment groove portion 2 and opens to the edge portion of the pad leading end side portion 13 And a relatively wide first groove portion 31 (FIG. 31) which receives the take-out preventing member 5 and opens to the outside in the radial direction (pad upper surface 11 in this example) Is formed. And a second groove portion 32 having a relatively narrow width is formed on the outside (base end). As described above, the locking groove portion 3 is composed of the groove 12 having the first and second groove portions 31 and 32 and widening inward.

The second groove portion 32 is formed in succession to the first groove portion 31 and is a relatively narrow groove whose inner wall surface extends a predetermined length in the axial direction along the outer circumferential surface of the sheath of the sheath thermocouple.

In the state where the warming portion 90 of the sheath thermocouple 9 is inserted into the insertion / attachment groove portion 2, the locking groove portion 3 (the groove 12 extending inward) (The opening 31a on the upper surface 11 side) of the sheath thermocouple 9 (the opening 31a on the upper surface 11 side) of the sheath thermocouple 31 is inserted in the radial direction 1 to 3, the stopper member 5 comes into contact with the inner wall surface 30 of the groove widened inward of the locking groove portion 3 and stops, The thermocouple 9 is attached to the pad 1 in such a state that the thermocouple 9 can not move toward the axial base end side.

In this example, the first and second trenches 31 and 32 are vertically communicating grooves opened to the upper and lower surfaces of the pad, respectively. Thus, the grooves 3 12 are vertically communicating grooves opened to the upper and lower surfaces of the pad. The grooves 12 widened inward can have various shapes such as a groove having a round shape when widened inward (widened toward the outer side) or a tapered groove as shown in Fig.

As shown in the figure, a known metal E-shaped snap ring (E-ring) is suitable as the dropout preventing member 5, but other known E-type snap rings, crescent snap rings, A known snap ring of a radial direction type such as a U-shaped snap ring or a K-shaped snap ring, or other approximately C-shaped snap ring can be appropriately used. As shown in Fig. 2, the dropout prevention member 5 has a stepped portion (not shown) formed at the boundary between the first groove portion 31 and the second groove portion 32 among the inner wall surface 30 of the groove 12 extending inwardly (Step difference portion) 12a.

It is preferable that the thickness of the slip prevention member 5 is set to be thinner than the axial width of the recessed groove 91 of the sheath thermocouple 9 to be mounted as shown in the figure. It is possible to release the sheath thermocouple 9 in the axial direction with respect to the pad 1 and to avoid deformation when a force to move relative to the pad 1 and the sheath thermocouple 9 occurs due to heat . That is, in particular, in a boiler tube or the like, the outer wall of the tube, which is a surface to be thermocouple, moves a lot in the axial direction due to heat shrinkage, so a force to move relative to the thermocouple occurs. However, when an external force is applied to the thermocouple, . By allowing relative movement as described above, it is possible to prevent an excessive stress on the warming portion and a measurement error caused thereby.

For the same purpose, the axial width of the first groove 31, that is, the distance between the end surface on the side of the insertion / attachment groove 2 and the step 21a on the second groove 32 side, It is preferable that the thickness of the stop member 5 is set to be longer than the thickness of the stop member 5 so that the stop member 5 can move along the axial direction.

Next, the mounting procedure until the sheath thermocouple 9 is attached to the temperature measurement target surface 80 with the pad 1 interposed therebetween will be described with respect to the mounting structure S of the present embodiment.

First, the pad 1 is fixed to the surface to be thermally-controlled 80 by welding or the like in a state of being in contact with the contact surface 10 on the lower surface side. The pad 1 is fixed in the following order. The base end portion 6b of the attachment fixture 6 is held in the state that the tip end portion 6a of the attachment fixture 6 as shown in Figs. 9A and 9B is attached to the pad 1, The position of the pad 1 is given to the surface to be thermally-controlled, and the pad 1 is fixed to the surface to be thermally-controlled in this state.

10A, the step of temporarily fixing the pad 1 to the surface to be thermally-controlled 80 by spot welding while grasping the proximal end 6b of the attachment fixture 6, As shown in Fig. 10B, a step of fixing the temporarily fixed pad 1 to the temperature-measuring object surface 80 by total peripheral welding. Accordingly, it is not necessary to grasp the attachment fixture 6 when performing the full circumference welding. Reference numeral 70 denotes a spot welded portion, and reference numeral 71 denotes an entire circumferential welded portion. In the case of performing the full circumference welding, the attaching fixture 6 may be temporarily removed from the pad 1.

As shown in Figs. 9A and 9B, the attaching jig 6 is provided with a pair of longitudinally extending (one end) side (tip end 6a) of the plate-like body portion 60, And the other end side (the proximal end 6b) serves as a gripping portion (gripping portion). Although the spring plate is made of metal in this example, it may be made of synthetic resin or other material.

The return portion 61 is formed to be bent in a substantially V-shape or U-shape so as to be wider than the axial width of the relatively wide first groove portion 31 of the locking groove portion 3 of the pad 1, (The opening 31a) of the first groove 31 to be attached to and detached from the inner wall of the first groove 31 by the elastic restoring force of the return portion 61. [

The attachment jig 6 is inserted into the locking groove 3 without being detached from the pad 1 and held in the attached state until the sheath thermocouple is attached to the pad Respectively. Accordingly, even in the case where the period is long until the sheath thermocouple is attached or the coating is performed on the surface to be thermally cured and the pad, the dust or coating material penetrates into the locking groove 3, particularly the insertion / attachment groove 2, Therefore, it is possible to maintain good thermal conductivity with the sheath thermocouple.

Next, the attaching fixture 6 is detached from the pad 1 fixed to the measurement target surface 80, and the inserting / attaching groove portion 2 of the pad 1 is fitted with the touching portion 90 of the sheath thermocouple 9 ) Is inserted along the axial direction. Since the sheath thermocouple 9 has a crank shape bent at a position closer to the base end than the regions R1 and R2 mounted on the pad 1, R2 of the distal end side of the bending portion 92 is easily attached to the pad 1 fixed to the temperature measurement target surface 80 while keeping the region R3 of the bending portion 92 at a position away from the side of the side of the side of the temperature measurement object 80 Can be mounted.

Is inserted into the insertion / attachment groove portion 2 of the region R1 having the thermally conductive portion 9 of the sheath thermocouple 9 so that the region R2 on the base side of the region R1 of the sheath thermocouple 9 (3) of the main body (1).

In this state, a substantially C-shaped stop member 5 (hereinafter referred to as a " stop member ") 5 is formed toward the inner sheath thermocouple 9 through a portion of the locking groove portion 3 that is opened to the outside of the relatively wide first groove portion 31 And is attached to the concave groove 91 of the sheath thermocouple 9 located in the first groove portion 31. As shown in Fig. The stopper member 5 mounted on the sheath thermocouple 9 abuts against the inner wall surface 30 of the groove 12 extending inward of the locking groove 3 and stops so that the sheath thermocouple 9 The pad 1 can not move toward the axial base end side.

Next, as shown in Figs. 7A and 7B, the entire cis-thermocouple 9 is rotated about the axis of the region R1 inserted and attached to the inserting / attaching groove 2, The region R3 on the proximal end side is brought into contact with the thermosensitive object 8 and fixed to the thermosensitive object 8 by an appropriate band or the like.

Although the embodiments of the present invention have been described above, it is needless to say that the present invention is not limited to these embodiments, and various modifications may be made without departing from the gist of the present invention.

1: Pad
2: Insertion / attachment groove
3: Locking groove
5:
6: Attachment fixture
6a:
6b:
8: Measurement object
9: Sheath thermocouple
10: contact surface
11: Top surface
12: Home
12a:
13:
30: My wall
31, 32: first and second grooves
31a: opening
60:
61:
70: spot welding portion
71: Overall circumferential weld
80: Surfaces to be measured
90:
91: concave groove
92: Bend
R1, R2, R3: region
S: attachment structure

Claims (11)

A mounting structure for attaching a sheathed thermocouple to a temperature measurement object surface with a pad therebetween,
Wherein the inserting / attaching groove portion in which the thermally sensitive portion of the sheath thermocouple is inserted along the axial direction is provided on the pad fixed to the surface to be thermally contacted with the contact surface, A locking groove part for receiving an area on the proximal end side of the inserted region and locking the sheath thermocouple so as to be axially detachable is formed,
A recessed groove extending in a circumferential direction is formed so as to be detachable from a radial direction in a substantially C-shaped slip-off preventing member at a predetermined position of a region taken in a locking groove portion of the sheath thermocouple,
Wherein the locking groove portion has a relatively wide groove portion which is open to the outside in the radial direction and receives a relatively large width of the retaining member and which has a relatively narrow groove portion on the outer side And an inner side widened groove,
The stopping member mounted on the inner sheath thermocouple via the open portion of the locking groove portion comes into contact with the inner wall surface of the groove widened inward of the locking groove portion and stops, To a state in which it is impossible to move
Features of the sheath thermocouple attachment structure.
The method according to claim 1,
Wherein the relatively wide groove portion of the locking groove portion is open to the outside on a surface opposite to the contact surface and the slip prevention member is mounted through the opening portion.
3. The method according to claim 1 or 2,
Wherein a groove widened inwardly, which constitutes the locking groove portion,
A first groove portion having a relatively wide width for receiving the stopper member,
A second groove portion formed continuously to the first groove portion and having an inner wall surface extending in the axial direction by a predetermined length along the outer circumferential surface of the sheath of the sheath thermocouple and having a relatively narrow width,
Respectively,
Wherein the stop member is in contact with a stepped portion formed at a boundary between the first groove portion and the second groove portion of the inner wall surface of the inwardly widening groove and stops.
4. The method according to any one of claims 1 to 3,
Wherein the pad is constituted by a plate material having a lower surface serving as the contact surface and an upper surface and a lower surface being substantially parallel,
Wherein a groove extending parallel to the contact surface as the insertion / attachment groove portion is formed in a central portion of the pad,
Wherein the locking groove portion is a groove which is continuous to the insertion / attachment groove portion and which is opened to the edge portion reaching the pad edge portion,
And the relatively wide groove portion is open to the outside on the upper surface of the pad
Attachment structure of sheath thermocouple.
5. The method according to any one of claims 1 to 4,
Wherein the relatively wide groove portion is an up-and-down communicating groove (upper and lower communicating groove) opened to the upper and lower surfaces of the pad.
6. The method according to any one of claims 1 to 5,
Wherein the entire inwardly extending groove constituting the locking groove portion is an up-and-down communication groove opened to the upper and lower surfaces of the pad.
A pad for use in an attachment structure of a cis-thermocouple according to any one of claims 1 to 6,
And an insertion / attachment groove portion into which the thermosensitive portion of the sheath thermocouple is inserted along the axial direction, and a region on the proximal end side of the region inserted into the insertion / attachment groove portion of the sheath thermocouple, A locking groove portion is formed,
Wherein the locking groove portion has a relatively wide groove portion which is open to the outside in the radial direction and receives a relatively large width of the retaining member and which has a relatively narrow groove portion on the outer side And an inner side widened groove,
Wherein the heat sink is inserted and attached to the insertion / attachment groove and the slip prevention member mounted on the concave groove through a portion of the locking slit that is open to the outside is widened to the inside of the locking groove The pad being attached in a state in which it can not move to the axial proximal side by stopping in contact with the inner wall surface of the groove.
A method of attaching a sheathed thermocouple to a surface to be temperature-monitored with a pad therebetween,
A thermo-sensitive portion of the sheath thermocouple is inserted and fixed along the axial direction on the pad fixed in a state in which the contact surface is in contact with the surface to be thermocoupled; And a locking groove portion for locking the sheath thermocouple so as to be detachable in the axial direction,
A recessed groove extending in the circumferential direction is formed so as to be detachable from the radial direction in a substantially C-shaped slip-off preventing member at a predetermined position of a region to be received in the locking groove portion of the sheath thermocouple,
Wherein the locking groove portion has a relatively wide groove portion which is open to the outside in the radial direction and receives a relatively large width of the retaining member and which has a relatively narrow groove portion on the outer side And an inner side widened groove,
A step of fixing the pad in a state in which the contact surface is in contact with the surface to be temperature-
Wherein a thermostatic portion of the sheath thermocouple is inserted into the inserting / attaching groove portion of the fixed pad along the axial direction, and a region closer to the proximal end than a region of the sheath thermocouple inserted into the inserting / A step of inserting and attaching,
And a substantially C-shaped slip-off preventing member is inserted through the portion of the locking groove portion opened to the outside of the relatively wide groove portion toward the inner sheath thermocouple, The process of mounting
Respectively,
Wherein the sheath thermocouple is attached in a state in which the sheath thermocouple is unable to move toward the axial base end side by stopping the stopper member mounted on the sheath thermocouple contact with the inner wall surface of the groove widened inward of the locking groove portion, Method of attaching thermocouple.
9. The method of claim 8,
Wherein the sheath thermocouple is formed in a bent shape at a position closer to the proximal end than a region mounted on the pad,
The entirety of the sheath thermocouple is rotated about the axis of the region to be inserted and inserted into the inserting / attaching groove portion, and the region on the proximal end side of the bent portion of the sheath thermocouple contacts the thermocouple The process,
The step of fixing the region on the base end side of the sheath thermocouple contacted with the temperature-measuring object to the temperature-
Wherein the method comprises the steps of:
10. The method of claim 9,
The step of fixing the pad in a state in which the contact surface is in contact with the surface to be temperature-
A plate-like attaching jig comprising: an attachment fixture having an attachment fixture having a recessed portion bent in a plate thickness direction on one end side in the longitudinal direction, through a relatively wide groove portion of the locking recess of the pad And attaching the attaching fixture to the pad by pressing and inserting it into the inner wall of the groove portion;
A step of grasping the other end side (the other end side) of the attachment jig and positioning the pad in a state in which the contact surface is in contact with the surface to be temperature-
And fixing the position-assigned pad to the temperature measurement target surface
Wherein the method comprises the steps of:
11. The method of claim 10,
The step of fixing the position-assigned pad to the object to be thermally-
A step of temporarily fixing the pad to the surface to be thermally-controlled by spot welding while grasping the other end side of the attaching jig,
A step of fixing the temporarily fixed pad to the object to be temperature-monitored by total peripheral welding
Wherein the method comprises the steps of:
KR1020197017565A 2017-02-28 2018-02-20 Attachment structure of sheath thermocouple, pad and sheath thermocouple attachment method KR102025347B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
JPJP-P-2017-036353 2017-02-28
JP2017036353A JP6164381B1 (en) 2017-02-28 2017-02-28 Sheath thermocouple mounting structure, pad used in the mounting structure, and sheath thermocouple mounting method
PCT/JP2018/006049 WO2018159391A1 (en) 2017-02-28 2018-02-20 Attachment structure for sheath thermocouple, pad used in said attachment structure, and method for attaching sheath thermocouple

Publications (2)

Publication Number Publication Date
KR20190073602A true KR20190073602A (en) 2019-06-26
KR102025347B1 KR102025347B1 (en) 2019-09-25

Family

ID=59351341

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1020197017565A KR102025347B1 (en) 2017-02-28 2018-02-20 Attachment structure of sheath thermocouple, pad and sheath thermocouple attachment method

Country Status (3)

Country Link
JP (1) JP6164381B1 (en)
KR (1) KR102025347B1 (en)
WO (1) WO2018159391A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4016024A1 (en) * 2020-12-18 2022-06-22 WIKA Alexander Wiegand SE & Co. KG Thermocouple sensor assembly

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60104737U (en) * 1983-12-20 1985-07-17 三菱重工業株式会社 surface temperature measuring device
JPH01145537A (en) 1987-12-02 1989-06-07 Mitsubishi Heavy Ind Ltd Thermocouple for measuring temperature
JPH07286907A (en) * 1994-04-19 1995-10-31 Chugoku Electric Power Co Inc:The Mounted structure for sheath thermocouple
JP2016156788A (en) 2015-02-26 2016-09-01 山里産業株式会社 Attachment structure of sheath thermocouple, and pad used in attachment structure

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5382093A (en) * 1993-02-22 1995-01-17 Gay Engineering & Sales Co., Inc. Removable temperature measuring device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60104737U (en) * 1983-12-20 1985-07-17 三菱重工業株式会社 surface temperature measuring device
JPH01145537A (en) 1987-12-02 1989-06-07 Mitsubishi Heavy Ind Ltd Thermocouple for measuring temperature
JPH07286907A (en) * 1994-04-19 1995-10-31 Chugoku Electric Power Co Inc:The Mounted structure for sheath thermocouple
JP2016156788A (en) 2015-02-26 2016-09-01 山里産業株式会社 Attachment structure of sheath thermocouple, and pad used in attachment structure

Also Published As

Publication number Publication date
JP2018141709A (en) 2018-09-13
KR102025347B1 (en) 2019-09-25
WO2018159391A1 (en) 2018-09-07
JP6164381B1 (en) 2017-07-19

Similar Documents

Publication Publication Date Title
JP5791412B2 (en) Ceramic heater
JP5546436B2 (en) Soldering iron
US8247739B2 (en) Tubular heating element with temperature sensor
JP5188310B2 (en) Temperature measuring instrument
US7354193B2 (en) Clamping device with flexible contact for heat pipe
JP6244093B2 (en) Magnet fixed thermometer
KR20120040631A (en) Thermo-couple for temperature measurement and method of manufacturing the same
JP6515584B2 (en) Mounting structure of sheath thermocouple, pad used for the mounting structure, and method of mounting sheath thermocouple
KR20190073602A (en) Attachment structure of sheath thermocouple, method of attaching pad and sheath thermocouple used for its attaching structure
KR102328943B1 (en) Thermal analysis equipment
JP2017003351A (en) Member for sensor attachment
JP6701678B2 (en) Thermocouple for temperature measurement and mounting structure of thermocouple for temperature measurement
US20220146327A1 (en) Low profile surface temperature sensor
JP2001221693A (en) Thermocouple element for temperature measurement
JP6408247B2 (en) Contact thermometer
JP6333100B2 (en) Heat dissipation mechanism of sensor device
JP4194895B2 (en) Thermometer for measuring the temperature of furnace refractories
CN204381599U (en) Armoured thermocouple auxiliary welding device
JP2006158517A (en) Heating treatment instrument
JP2023066221A (en) Temperature sensor fitting jig
JPH0541386Y2 (en)
JPH0439605B2 (en)
JP2003149056A (en) Surface temperature sensor
JP2023114884A (en) Temperature sensor attachment structure
JPH08256909A (en) Temperature detector for cooking heater

Legal Events

Date Code Title Description
A201 Request for examination
A302 Request for accelerated examination
E701 Decision to grant or registration of patent right
GRNT Written decision to grant