JP2002333095A - Heat-insulation cover for covering elbow - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat-insulation cover for covering an elbow, capable of easily and efficiently heat-insulating the elbow. SOLUTION: This heat-insulation cover 13 for covering the elbow comprises a bent cylindrical body 4 having the bent shape corresponding to the elbow to be covered, and a first cylindrical part 2 and a second cylindrical part 3, where the directions of openings are different from one another, the bent cylindrical body 4 is made out of a synthetic resin foam 6 on which a skin 5 is laminated over the whole outer peripheral face, and is longitudinally cut equally left and right to form left and right divided bent halves 8, 9 openable and closeable at the longitudinal cut part in a state that an outer bent side of the bent cylindrical body 4 remains by a thickness of the skin to form a hinge part 7 on the remaining part. The skin 5 of the right divided bent half 9 is provided with an extended adhesive part 23 expanded like extension and having an adhesive layer coated with separate paper on its back side.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a heat insulating cover for covering an elbow.

[0002]

2. Description of the Related Art When it is necessary to keep the fluid flowing in a pipe warm or cold, heat insulation is usually performed by covering the pipe with a heat insulating material or covering the pipe with a tubular synthetic resin foam. (See Japanese Utility Model Laid-Open No. 59-195293).

In this heat insulating construction, a heat insulating cover (41) for covering an elbow conventionally used for an elbow is shown in FIG.
As shown in (a), a longitudinal section (45) is provided on one side of a peripheral wall of a cylindrical body (44) made of a synthetic resin foam (43) having a skin (42) adhered to the entire outer peripheral surface thereof. V-shaped notch (46) symmetrical on both sides of the longitudinal section (45) so that the thickness of the peripheral wall is almost left at the tip toward the other side.
Is provided in the middle of the length of the cylindrical body (44).

When the conventional heat insulating cover for covering an elbow is covered with an elbow, first, as shown in FIG. 16 (b), a half of a straight cylindrical body (44) is opened from the longitudinal section (45) to both left and right sides. (Arrows a and b) cover the elbow half (48) with the opening direction of the elbow (49) different, and then, as shown in FIG. 16 (c), attach the other half of the cylindrical body (44). Bend to longitudinal section
Opened from (45), put on the other elbow half (52), butted one inclined surface (46a) of the V-shaped notch (46) and the other inclined surface (46b), the butt portion (47) It is formed into an L-shaped bent cylindrical heat insulating cover (50) having a longitudinal section (45). Finally, as shown in FIG.
An adhesive tape (51) is wrapped around the entire peripheral surface, and the heat insulating cover (50) is fixed to the elbow (49).

Therefore, it is necessary to bend the straight cylindrical body (44) into an L-shaped bent cylinder every time the elbow is thermally insulated, and the heat insulation is troublesome and inefficient.

[0006]

SUMMARY OF THE INVENTION An object of the present invention is to provide a heat insulating cover for covering an elbow, which can easily and efficiently perform the heat insulating work of the elbow.

[0007]

According to the first aspect of the present invention, there is provided a heat insulating cover for covering an elbow having a bent shape corresponding to an elbow to be covered and having a first cylindrical portion and a second cylindrical portion having mutually different opening directions. It is formed of a bent cylindrical body having a cylindrical portion, and the bent cylindrical body is formed of a synthetic resin foam in which skin is laminated on the entire outer peripheral surface, and any one of an outer bent side and an inner bent side of the bent cylindrical body On the bending side of the synthetic resin foam, a part of the synthetic resin foam and the skin are allowed to remain at least for the thickness of the skin, and the entire bent cylinder is equally divided into the left and right so that the hinge part is formed by the remaining part. And a left / right split bent half that can be opened and closed at the longitudinal section.

According to a second aspect of the present invention, there is provided a heat insulating cover for covering an elbow according to the first aspect of the present invention, wherein the skin of one of the left bent half and the right bent half is provided. Each of the first tubular portion and the second tubular portion has an adhesive layer extending in an extended manner and covered on the back surface with release paper, and when the two split bent halves are closed, the other split bent portion is closed. It is characterized in that an extended pasting portion to be pasted on the half body side is provided.

According to a third aspect of the present invention, there is provided a heat insulating cover for covering an elbow, wherein a cylindrical portion made of a synthetic resin foam having a skin layered over the entire outer peripheral surface is provided with a longitudinally extending portion extending over the entire length on one side of the peripheral wall. On the other side, a cut is made to remain at least as much as the skin thickness out of the combined thickness of the part of the synthetic resin foam and the skin so as to face the longitudinal section, and the thickness of the peripheral wall almost remains at the tip A V-shaped notch symmetrical on either side of either the longitudinal section or the cut is provided at a predetermined position of the length of the cylindrical body, and the cylindrical body is bent to form one inclined surface of the V-shaped notch. And the other inclined surface are joined together to form a left / right split bent half that can be opened / closed at the longitudinal section as a hinge portion at the break, and both split bent halves are closed. To the elbow to be coated Is characterized in that the response shape having and mutually opening direction have been made so that the bent cylindrical body having a first cylindrical portion and a second cylindrical portion that is different.

According to a fourth aspect of the present invention, in the heat insulating cover for covering an elbow according to the third aspect, the tip of the V-shaped notch is formed to be substantially U-shaped without being sharpened. It is a feature.

Specific examples of the synthetic resin of the synthetic resin foam include polyethylene, polypropylene, and polystyrene. From the comprehensive viewpoints of heat insulation, durability, cost, etc., foamed polyethylene is preferred, and highly crosslinked polyethylene is particularly preferred. (Trade name “Heat-resistant tube NLT” manufactured by Sekisui Chemical Co., Ltd.) is particularly preferred. The thickness of the synthetic resin foam is preferably 5 to 20 mm, and the expansion ratio is 20 to 3 mm.
0 times is preferred. The upper limit of the thickness of the remaining synthetic resin foam when forming the hinge portion is preferably 50% of the total thickness.

As a specific example of the skin material, there is a synthetic resin sheet having a back surface subjected to adhesive processing. Further, the thickness of the skin is preferably 0.05 to 0.3 mm. In addition, a cylindrical body itself made of a synthetic resin foam having a polyvinyl chloride resin skin laminated on the entire outer peripheral surface also exists as a product (trade name “Eslon Eslomink LTQ” manufactured by Sekisui Chemical Co., Ltd.).

[0013]

Embodiments of the present invention will be described below with reference to the drawings. (Embodiment 1) This embodiment relates to the first aspect of the present invention and is shown in FIGS. 1 and 2, a heat insulating cover (1) for covering an elbow has a first tubular portion (2) and a second tubular shape having bent shapes corresponding to the elbow to be covered and having mutually different opening directions. The bent cylindrical body (4) has a portion (3), and the bent cylindrical body (4) is a synthetic resin foam in which a skin (5) is laminated with an adhesive over the entire outer peripheral surface.
(6), on the outer bending side of the bent cylinder (4), the skin portion is left by the thickness of the skin, and the remaining portion forms the hinge part (7), so that the entire bent cylinder (4) is formed. Are divided into right and left equal lengths, and are divided into left and right divided halves (8) and (9) that can be opened and closed manually by a vertical section. In the figure, (10) shows a longitudinally cut portion on the inner bend side, and (11) shows a cut on the outer bend side facing the longitudinally cut portion (10).

FIG. 3 shows a modification of the hinge portion on the outer bending side. That is, in FIG. 1, the hinge portion (7) is formed by the remaining portion of the bent cylindrical body cut corresponding to the skin thickness, but the hinge portion (12) shown in FIG. ) And the skin (5) are formed by the remaining portion of the bent cylindrical body cut corresponding to the thickness of the skin (5), which makes the cutting process easier and results in a larger hinge portion. In the figure, (1
3) is a cut which is shallower than the cut (11) in FIG.

(Embodiment 2) This embodiment also relates to the invention of claim 1 and is shown in FIGS. The heat insulating cover (1) for covering an elbow according to the first embodiment shown in FIGS. 1 and 2 is provided on the outer bending side of the bending cylinder (4)
Remains for the thickness of the skin, and hinges
The entire bent cylinder (4) is cut vertically equally into the left and right parts so that (7) is formed, and the left and right split bent halves (8) and (9) can be opened and closed at the longitudinal section. Figure 4
In addition, the heat insulating cover (14) for elbow covering according to the second embodiment shown in FIG. 5 has a skin portion remaining on the inner bending side of the bent cylindrical body (4), and a hinge portion (15) is formed by the remaining portion. As a result, the entire bent cylinder (4) is cut vertically equally into the left and right parts, and is made into a left and right split bent half (16) (17) that can be opened and closed manually by a vertical section Things. In the figure, (1
8) shows a vertical section on the outer bending side, and (19) shows a cut on the inner bending side facing the vertical section (16). In the heat insulating cover for elbow covering (1) of the first embodiment, the longitudinal section (10) is on the inner bending side, whereas in the heat insulating cover for elbow covering (14) of the second embodiment, the longitudinal section (18) is provided. ) Is on the outer bending side, so that the former left-right split bending half (8) (9) and the latter left-right split bending half (16) (17) are reversed.

FIG. 6 shows a modification of the hinge portion on the inner bending side. That is, in FIG. 4, the hinge portion (15) is formed by the remaining portion of the bent cylindrical body cut corresponding to the skin thickness, but the hinge portion (20) shown in FIG. ) And the remaining portion of the bent cylindrical body cut by the thickness of the skin (5) combined. In the figure, (21) is FIG.
This is a cut that is shallower than the cut (19).

FIG. 7 shows a left-right bent part with the hinge part (7) on the outer bending side as a fulcrum in order to cover the elbow (not shown) with the heat insulating cover (1) for covering the elbow according to the first embodiment. It shows a state in which the half bodies (8) and (9) are being opened in the directions of arrows (a) and (b). FIG. 8 is a view for covering an elbow (not shown) with the elbow covering heat insulating cover (14) of the second embodiment.
The left and right split bending halves (17) and (18) are being opened in the directions of arrows (c) and (d) with the hinge portion (15) on the inner bending side as a fulcrum.

(Embodiment 3) This embodiment relates to the invention of claim 2 and is shown in FIG. The elbow covering heat insulating cover (22) of the figure is the same as the elbow covering heat insulating cover of the first embodiment shown in FIGS.
Adhesion that extends in an extended manner and is covered with release paper on the back surface of the skin (5) of the right-divided bent half (9) on the inner bending side of each of the cylindrical portion (2) and the second cylindrical portion (3) With layers, both split bending halves
(8) When (9) is closed, an extended attachment portion (23) to be attached to the left-divided bent half (8) is provided.

(Embodiment 4) This embodiment also relates to the invention of claim 2 and is shown in FIG. The heat insulating cover (24) for covering the elbow shown in the figure is the same as the heat insulating cover for covering the elbow according to the second embodiment shown in FIGS. 4 and 5, except that the first tubular portion (2) and the second tubular portion (3) are respectively provided. The skin (5) of the right split bending half (17) on the outer bending side has an adhesive layer that extends in an extended manner and is covered with release paper on the back side, and the split bending half (16) (17) Is provided with an extended sticking portion (25) to be attached to the left split bent half (16) side when is closed.

The heat insulating covers (1), (14), (22), and (24) for covering the elbow according to the first to fourth embodiments are all covered with a 90 ° elbow. ,
As shown in FIGS. 8 and 9, the left and right split bending halves (8) (1
6) Open (9) and (17) to both sides, cover the elbow, and then close it. After that, it is necessary to fix it to the elbow. In this case, in the heat insulating cover for elbow coating according to the first embodiment, the butted surfaces of the longitudinally bent portions (10) on the inner bending side are heat-sealed, and the heat insulating cover for elbow coating according to the second embodiment is applied.
In (14), the butted surfaces of the longitudinally bent portions (18) on the outer bending side are thermally fused. Of course, instead of heat-sealing, bonding may be performed using an adhesive, or an adhesive tape may be wound.

However, in the heat insulating cover (22) for covering an elbow according to the third embodiment, the first tubular portion (2) and the second tubular portion (3) are provided.
The epidermis of the right split flexion half (9) on each inner flexion side
(5) is provided with an extended sticking portion (23) having an adhesive layer that extends in an extended shape and is covered on the back surface with release paper. Further, the heat insulating cover (24) for elbow coating according to the fourth embodiment is provided. )
The outer skin (5) of the right-divided bent half (17) on the outer bending side of the first tubular portion (2) and the second tubular portion (3) extends in an extended manner and is covered with release paper on the back surface. Extended sticking part with adhesive layer
(25) is provided, so both of them are
6) It is only necessary to peel off the release paper of (25), expose the adhesive layer, and attach the extended attachment portions (16) and (25) to the left-divided bent half bodies (8) and (16).

(Embodiment 5) This embodiment relates to the invention of claim 3 and is shown in FIGS. 1, 2, 11 and 12. As shown in FIG. 11, the heat insulating cover (1) for covering an elbow shown in FIGS. 1 and 2 has a straight outer surface made of a synthetic resin foam (6) having an outer surface (5) laminated by an adhesive. A longitudinal section (27) is provided on one side of the peripheral wall of the cylindrical body (26), and a longitudinal section (2
A cut (28) that is left by the skin thickness of the cylindrical body (26) is provided so as to face 7), and as shown in FIG.
A V-shaped notch (30) symmetrical on both sides across the longitudinal section (28) so that the thickness of the peripheral wall almost remains at the tip (29)
As shown by a dashed line in FIG. 12, a straight cylindrical body (26) provided in the middle of the length of (26) is provided with one inclined surface (30a) and the other inclined surface (30a) of the V-shaped notch (30). The remaining portion of the cut (28) is made into a hinge portion (7) shown in FIG. 1 by heat-sealing the portion 30b), and a left-right split bent half (8) that can be opened and closed manually by a longitudinal section (27) is used as a boundary. (9) is formed, and when the two split bent halves (8) and (9) are closed, the first cylindrical portion having a shape corresponding to the elbow to be coated and having mutually different opening directions. (2) and the second
The bent cylindrical body (4) having the cylindrical portion (3) is provided. The vertical section (27) on one side of the peripheral wall of the straight cylindrical body (26) and the cut (28) on the other side are the inner bending side vertical section (10) of the bending cylindrical body (4) in FIG. And the bending side cut (11).

(Embodiment 6) This embodiment also relates to the third aspect of the present invention, and is shown in FIGS. 4, 5, 13 and 14. As shown in FIG. 13, the heat insulating cover (14) for covering the elbow shown in FIGS. 4 and 5 is a straight resin foam (6) having a skin (5) laminated with an adhesive over the entire outer peripheral surface. A longitudinal section (31) is provided on one side of the peripheral wall of the cylindrical body (26), and is left on the other side by the skin thickness of the cylindrical body (26) so as to face the longitudinal section (31). As shown in FIG. 14, a V-shaped notch (symmetrical on both sides of the longitudinal section (28) so that the thickness of the peripheral wall substantially remains at the tip (29) as shown in FIG. 14. 30)
Is provided in the middle of the length of the cylindrical body (26), and a straight cylindrical body
As shown in FIG. 14 by a dashed line in FIG. 14, one inclined surface (30a) and the other inclined surface (30b) of the V-shaped notch (30) are thermally fused, so that the cut (32) remains. The part is the hinge part (15) shown in FIG. 4, and the left and right split bent halves (16) and (17) which can be opened and closed manually by the cut (32) are formed, and the both split bent halves (16) When (17) is closed, a bent cylindrical body having a first tubular portion (2) and a second tubular portion (3) having a shape corresponding to the elbow to be covered and having mutually different opening directions. (4). Note that a straight cylinder (2
The vertical section (31) on one side of the peripheral wall and the cut (32) on the other side of the peripheral wall of FIG. 6 are the outer bent side vertical section (18) and the inner bent side cut (18) of the bent cylindrical body (4) in FIG. 19).

Instead of heat-sealing the two inclined surfaces (30a) (30b), they may be bonded by an adhesive. Embodiment 5
In FIG. 6 and FIGS. 6A and 6B, the cuts (28) and (32) are left by the skin thickness of the cylindrical body (26), but the thickness of a part of the synthetic resin foam (6) and the skin (5) is combined. In this case, the remaining portion may be hinged (12) (2) (2) shown in FIGS.
0).

Since the heat insulating covers (1) and (14) for covering the elbows of the above-mentioned embodiments are for covering the elbows at 90 °, the notch angle of the V-shaped notch (30) is 90 °. 1 cylindrical part
Since the length of (2) is equal to that of the second cylindrical portion (3), the V-shaped notch
(30) is located in the middle of the length of the cylinder (26). When the bending angle of the elbow is other than 90 °, the notch angle of the V-shaped notch is determined corresponding to the bending angle. When the lengths of the first tubular portion and the second tubular portion are different, the position of the V-shaped notch in the cylindrical body (26) is determined corresponding to the length of both tubular portions.

(Embodiments 7 and 8) These embodiments are related to the invention of claim 4, and in the fifth and sixth embodiments, the tip of the V-shaped notch (30) is not sharp but substantially U
The configuration is the same as that of the fifth and sixth embodiments.

As in the fifth and sixth embodiments, the tip (29)
A straight V-shaped notch (30), a straight cylindrical body (26)
Is bent to join one inclined surface (30a) and the other inclined surface (30b) of the V-shaped notch (30) to the original shape by the elasticity of the synthetic resin foam (6). Works, but
As in Embodiments 7 and 8, when the V-shaped notch (30) has a substantially U-shaped front end (33) without being sharpened, the above-described force is weakened. If the notch angle of the V-shaped notch (30) is 90 °, both inclined surfaces (30a)
(30b) can be matched exactly, but at other angles, when the two inclined surfaces (30a) and (30b) are combined, there may be a discrepancy between them, and in this case, adjust so that they match exactly It is possible.

[0028]

According to the heat insulating cover for covering an elbow of the present invention which can be provided at a low cost, the left and right split bent halves can be opened and closed with the hinge portion as a fulcrum. Since it is excellent, the heat insulation construction of the elbow can be performed easily and efficiently. In particular, in the case where the extended attachment portion is provided, it is not necessary to prepare an adhesive tape at the construction site, and the construction can be performed extremely efficiently.

[Brief description of the drawings]

FIG. 1 is a side view of a partially cutaway heat insulating cover for an elbow showing one embodiment of the first and third aspects of the present invention.

FIG. 2 is a front view of the heat insulating cover for covering an elbow shown in FIG. 1;

FIG. 3 is a side view corresponding to FIG. 2, showing a modified example of a hinge part in the heat insulating cover for elbow covering of FIG. 1;

FIG. 4 is a side view of a partially cutaway heat insulating cover for covering an elbow according to another embodiment of each of the first and third aspects of the present invention.

FIG. 5 is a front view of the heat insulating cover for covering the elbow shown in FIG. 4;

6 is a side view corresponding to FIG. 5, showing a modified example of a hinge part in the heat insulating cover for elbow covering of FIG. 4;

FIG. 7 is a perspective view showing a state in which the left and right split bending halves are being opened in the heat insulating cover for elbow covering of FIG. 1;

FIG. 8 is a perspective view showing a state in which the left and right split bending halves are being opened in the heat insulating cover for elbow covering of FIG. 4;

FIG. 9 is a perspective view showing a state in which the heat insulating cover for elbow covering according to one embodiment of the present invention is closed and an extended pasting portion is pasted.

FIG. 10 is a perspective view of a heat insulating cover for covering an elbow according to another embodiment of the present invention in a closed state and a state in which an extended pasting portion is pasted.

FIG. 11 is a perspective view of a cylindrical body provided with a partially cut-out vertical section and a cut used in one embodiment of the third invention.

FIG. 12 is a partially cutaway side view showing a state where a V-shaped notch is provided in the cylindrical body of FIG. 11;

FIG. 13 is a perspective view of a cylindrical body provided with a partially cut-out vertical section and a cut used in another embodiment of the third invention.

FIG. 14 is a partially cutaway side view showing a state in which a V-shaped notch is provided in the cylindrical body of FIG. 13;

FIG. 15 is a side view of a cylindrical body with a V-shaped notch provided with a substantially U-shaped tip used in the embodiment of the fourth invention.

16A is a perspective view of a conventional heat insulating cover for elbow covering with a part of the skin removed, FIG. 16B is a perspective view showing a state in which the elbow covering heat insulating cover is being covered with the elbow, and FIG. () Is a perspective view showing a state after the elbow covering heat insulating cover is covered with the elbow, and (d) is a perspective view showing a state where the elbow covering heat insulating cover is fixed to the elbow using an adhesive tape.

[Explanation of symbols]

 (1) (14) (22) (24): Insulated cover for elbow coating (2): First cylindrical part (3): Second cylindrical part (4): Bent cylindrical body (5): Skin (6) ): Synthetic resin foam (7) (12) (15) (20): Hinge (8) (16): Left split bent half (9) (17): Right split bent half (10): Inside Bending side longitudinal section (11) (13): Outer bending side break (18): Outer bending side longitudinal section (19) (21): Inner bending side break (23) (25): Extended paste Part (26): Cylindrical body (27) (31): Vertical section on one side of peripheral wall (28) (32): Cut on other side of peripheral wall (29): Tip of V-shaped notch (30): V-shaped notch (30a): One inclined surface of the V-shaped notch (30b): The other inclined surface of the V-shaped notch (33): A substantially U-shaped tip of the V-shaped notch

Claims (4)

[Claims] 1. A bent cylindrical body having a first cylindrical part and a second cylindrical part having a bent shape corresponding to an elbow to be coated and having mutually different opening directions, and the bent cylindrical body has an outer periphery. It is formed of a synthetic resin foam having a skin layered on the entire surface, and a part of the synthetic resin foam and the skin are fitted to one of the outer bending side and the inner bending side of the bent cylindrical body. The entire bent cylinder is vertically cut equally into left and right parts so that at least the skin thickness remains in the thickness, and the hinge part is formed by the remaining part. A heat insulating cover for elbow coating, wherein the heat insulating cover is formed as a split bent half. 2. The first and second cylindrical portions extend in an extended manner on the skin of one of the left and right split bent halves and extend on the back surface. An extended adhesive portion having an adhesive layer covered with release paper and being attached to the other split bent half when the split bent half is closed is provided. 2. The heat insulating cover for elbow coating according to 1. 3. A cylindrical section made of a synthetic resin foam having a skin layered on the entire outer peripheral surface, a longitudinal section is provided on one side of a peripheral wall of the cylindrical body, and is opposed to the longitudinal section on the other side. One of the longitudinal section and the cut is provided such that a cut is left at least for the thickness of the skin in the combined thickness of the synthetic resin foam and the skin, and the thickness of the peripheral wall is almost left at the tip. A V-shaped notch with both sides symmetrical on one side is provided at a predetermined position of the length of the cylindrical body, and the cylindrical body is bent so that one inclined surface and the other inclined surface of the V-shaped notch are joined together. The left and right split bent halves that can be opened and closed at the longitudinal section are formed as hinges, and when the two split bent halves are closed, they have a shape corresponding to the elbow to be covered. And the opening directions are different from each other A heat insulating cover for covering an elbow, wherein the heat insulating cover is a bent cylindrical body having a first cylindrical portion and a second cylindrical portion. 4. The heat insulating cover for elbow coating according to claim 3, wherein the V-shaped notch has a substantially U-shaped tip without being sharpened.