JP2016161107A - Airtight jig for opening part - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an airtight jig for an opening part in which the opening part such as a pipe end can be airtightly closed in a safe manner with a simple configuration, a high airtightness can be held and the jig can be removed fast.SOLUTION: This invention relates to an airtight jig 1 for an opening part for airtightly closing an opening part 52 such as an end part of a pipe 50. The jig comprises: a cover member including a base plate 11 and a supporting piece 12; a hose band 20 for fixing the supporting piece 12 near the opening part 52; a pressing plate 30 applied with a pressing force through screwing of a bolt B; and a resilient member 40 disposed between the pressing plate 30 and the opening part 52. The supporting piece 12 is fixed with the hose band 20 in such a way that the base plate 11 is arranged at a position where it is spaced apart from and oppositely faces the opening part 52, the resilient member 40 is resiliently deformed by the pressing plate 30 and making closely contact with the circumferential edge of the opening part 52, thereby the opening part 52 is airtightly closed.SELECTED DRAWING: Figure 5

Description

  The present invention relates to an opening sealing jig for sealing an opening such as a pipe end.

  Conventionally, various sealing jigs for openings have been developed to seal openings such as pipe ends. As a prior art showing such a sealing jig for an opening, there is Patent Document 1 below.

Japanese Utility Model Publication No. 2-63440

The above Patent Document 1 is an invention related to a pipe end sealing jig, and includes a cap 14 made of an elastic material, and a case 12 that houses the cap 14 and has an air supply hole 21 whose opening end is sealed by the opening end of the cap 14. A configuration is disclosed in which compressed air is enclosed in a sealed space formed between the cap 14 and the case 12 through the air supply hole 21 and the peripheral wall portion of the cap 14 is contracted to be crimped to the outer peripheral surface of the pipe 4. Yes.
In addition, the above-mentioned Patent Document 1 includes a pair of left and right holding plates 2 and 3 that are opposed to each other as a prior art of a pipe end sealing device. 4 is disposed through sealing urethane rubbers 5 and 6, one holding plate 3 is advanced toward the other holding plate 2 by appropriate means such as a cylinder 7, and the urethane rubbers 5 and 6 are connected to the pipe 4. A pipe end sealing device is disclosed which is pressed against each open end face.
However, the pipe end sealing jig of Patent Document 1 has a problem that the work process for attaching the jig is complicated and the work efficiency is poor.
Further, the pipe end sealing device disclosed as the prior art in Patent Document 1 has a configuration in which both ends of the pipe are integrally sealed, and therefore cannot be used when sealing only one end of the pipe on one side. There was a problem.
Conventionally, air-conditioning machines (so-called absorption chiller / heaters, etc.) installed in large commercial facilities and station buildings are very large and heavy (about 40 refrigeration tons to 700 refrigeration tons). It was customary to transport to the installation site and reassemble. And as a method of disassembling and transporting an air-conditioning machine, it has been generally carried out by cutting the pipe at an intermediate position and sealing the cut portion. Furthermore, since such an air-conditioning machine is required to have high airtightness, after the grinder finish of the cut part is performed, the cover plate is fixed and sealed to the cut part by main welding and leaked by pressurizing with nitrogen or helium. It was common to inspect and then ship with nitrogen pressurization to prevent air from entering the sealed part. Therefore, the operation of sealing the opening (so-called opening end) of the pipe end of such an air conditioning / heating machine has a more complicated operation process and is accompanied by an operation with high risk such as a grinder operation or a main welding operation. Therefore, improvement in work efficiency and safety has been particularly desired. Also, when assembling the air-conditioning machine again at the installation site, the work of removing the cover plate is complicated and the work efficiency is poor, and therefore, it has been desired to develop a sealing jig that can be quickly removed.

  Accordingly, the present invention solves the above-described problems of the prior art, and it is possible to safely seal the opening of the pipe end or the like with a simple configuration, maintain high airtightness, and quickly remove the sealing for the opening. Providing ingredients is an issue.

In order to achieve the above object, an opening sealing jig of the present invention is an opening sealing jig for sealing an opening such as a pipe end, and is used for screwing a bolt through a nut. A cover member comprising a base plate having a plurality of through holes for bolts, one or more support pieces provided extending from the periphery of the base plate, and the support piece in the vicinity of the opening. A fixing means for fixing, a pressing plate to which a pressing force is applied by screwing of the bolt, and an elastic member disposed between the pressing plate and the opening, are spaced apart from the opening. The support piece is fixed by the fixing means so that the base plate is disposed at a position where the base plate is disposed, and the elastic member is elastically deformed by the pressing plate so as to be in close contact with the periphery of the opening, thereby To seal the opening It is characterized of.
In addition to the first feature described above, the opening sealing jig according to the present invention includes a plurality of support pieces extending in a direction orthogonal to the base plate, and a plurality of the support plates. The second feature is that it is a size that comes into contact with the inner surface of the body integrally.
In addition to the first or second feature, the opening sealing jig of the present invention has a third feature that the fixing means is a hose band.
Moreover, in addition to any one of the first to third features described above, the opening sealing jig of the present invention includes a pressure plate with a pipe with a valve, and an opening on the end surface facing the opening. A fourth feature is that the elastic member is provided with a through hole communicating with the opening of the pressing plate.

  The opening sealing jig according to the first feature is an opening sealing jig for sealing an opening such as a pipe end, and one or more for screwing a bolt through a nut. A cover plate comprising a base plate having through holes for bolts, one or more support pieces provided extending from the periphery of the base plate, and fixing the support pieces in the vicinity of the opening. And a pressing plate to which a pressing force is applied by screwing in the bolt, and an elastic member disposed between the pressing plate and the opening, and a position facing the opening. The supporting piece is fixed by the fixing means so that the base plate is disposed on the elastic plate, and the elastic member is elastically deformed by the pressing plate so as to be in close contact with the periphery of the opening, thereby the opening. Seal the pie It is possible to seal the opening of the end portion and the like with a simple structure. Moreover, since it is the structure which uses a volt | bolt and a nut, it can hold | maintain high airtightness with a simple structure.

  Further, according to the opening sealing jig according to the second feature, in addition to the function and effect of the first feature, the support piece is composed of a plurality of pieces extending in a direction orthogonal to the base plate and is pressed. Since the plate is sized so as to abut against the inner surfaces of the plurality of support pieces, it is possible to apply a pressing force by screwing a bolt while guiding the press plate with the support pieces. Therefore, the pressing force of the bolt can be efficiently transmitted to the pressing plate, and the opening can be sealed with higher accuracy.

  Further, according to the opening sealing jig according to the third feature, in addition to the function and effect of the first or second feature, the fixing means is a hose band. It can be safely sealed. Moreover, when removing the sealing jig for openings, it can be quickly removed just by loosening the hose band, and the sealing jig for openings with good work efficiency can be obtained.

  According to the opening sealing jig according to the fourth feature, in addition to the function and effect of any one of the first to third features, the pressing plate includes a pipe with a valve, and the opening and Since the elastic member is provided with a through-hole communicating with the opening of the pressing plate, the liquid is drained through a pipe with a valve in a state where the opening is sealed. It can be set as the opening | closing part sealing jig which can perform a work | work, a gas injection | pouring work, etc.

It is a disassembled perspective view which shows the sealing jig for openings which concerns on the 1st Embodiment of this invention. It is a perspective view which shows the state which attached the sealing jig for openings which concerns on the 1st Embodiment of this invention to the pipe. It is a figure which shows the cover member in the sealing jig for openings which concerns on the 1st Embodiment of this invention, (a) is a top view of a cover member, (b) is a bottom view of a cover member. It is a figure which shows the process of attaching the sealing jig for openings which concerns on the 1st Embodiment of this invention to a pipe. It is a figure which shows the process of attaching the sealing jig for openings which concerns on the 1st Embodiment of this invention to a pipe. It is a figure which shows the modification of the sealing jig for openings which concerns on the 1st Embodiment of this invention, (a) is a side view of the modification 1, (b) is a side view of the modification 2. FIG. It is a perspective view which shows the modification 3 of the sealing jig for openings which concerns on the 1st Embodiment of this invention. It is a figure which shows the modification of the sealing jig for openings which concerns on the 1st Embodiment of this invention, (a) is a perspective view of the modification 4, (b) is a perspective view of the modification 5. FIG. It is a figure which shows the sealing jig for openings which concerns on the 2nd Embodiment of this invention, (a) is a top view, (b) is sectional drawing in the AA line direction of (a). It is a figure which shows the modification 1 of the sealing jig for openings which concerns on the 2nd Embodiment of this invention, (a) is a top view, (b) is sectional drawing in the BB line direction of (a). . It is a figure which shows the modification 2 of the sealing jig for openings which concerns on the 2nd Embodiment of this invention, (a) is a top view, (b) is sectional drawing in the CC line direction of (a). .

  Hereinafter, with reference to each drawing, an opening sealing jig according to an embodiment of the present invention will be described for understanding of the present invention. However, the following description does not limit the present invention described in the claims.

First, an opening sealing jig according to a first embodiment of the present invention will be described with reference to FIGS.
The opening sealing jig 1 according to the first embodiment of the present invention is a jig for sealing the opening 52 by being attached to the end 51 of a pipe 50 having a circular cross section which is a cylindrical member. The opening sealing jig 1 includes a cover member 10, a hose band 20, a pressing plate 30, and an elastic member 40.

  The cover member 10 constitutes a so-called main body of the opening sealing jig 1 and includes a base plate 11 and a support piece 12 as shown in FIGS.

  The base plate 11 is a plate-like member provided with a plurality of bolt through holes 11 a for screwing bolts B through nuts N. In the present embodiment, as shown in FIG. 1, the base plate 11 is formed of a circular plate-like member that is slightly larger than the cross section of the pipe 50. Further, as shown in FIG. 3B, a single bolt through hole 11a is provided in the center of the base plate 11, and is concentric with the bolt through hole 11a provided in the center as a center. The four bolt through holes 11a are provided at equal intervals in the circumferential direction. More specifically, as shown by a two-dot chain line in FIG. 3B, a line connecting the center of the base plate 11 and the center of the bolt through hole 11a is 90 to between the adjacent bolt through holes 11a. Four bolt through-holes 11a having the same shape and the same size are provided at intervals that intersect each other. Further, the size of the bolt through holes 11 a provided in the center of the base plate 11 is set to be larger than the size of the four bolt through holes 11 a provided in the circumferential direction of the base plate 11.

In addition, as the base plate 11, a rolled steel material (for example, SS400 etc.) can be used. The thickness of the base plate 11 is preferably about 6 mm to 9 mm. Further, the diameter of the base plate 11 can be appropriately changed according to the diameter of the pipe 50.
The diameter of the bolt through hole 11a provided in the center of the base plate 11 is about 12 mm to 16 mm, and the diameter of the four bolt through holes 11a provided in the circumferential direction of the base plate 11 is about 8 mm to 10 mm. Is desirable. Furthermore, the distance from the center of the four bolt through holes 11a provided in the circumferential direction of the base plate 11 to the outer periphery in the radial direction of the base plate 11 is preferably about 20 mm.
In the present embodiment, a plurality of (five) bolts B have the same length in the longitudinal direction. The bolt B can be screwed into the pipe 50 side by fitting a tool (for example, a hexagon wrench) into the tool fitting recess B1 shown in FIG.
Further, the number and arrangement positions of the bolt through holes 11a and the interval between the bolt through holes 11a adjacent to each other in the circumferential direction of the base plate 11 are not limited to those of the present embodiment, and can be changed as appropriate. However, it is desirable that at least one bolt through hole 11a is provided at the center of the base plate 11. Further, a plurality of bolt through holes 11 a provided in the circumferential direction of the base plate 11 are concentric with respect to the bolt through hole 11 a provided in the center of the base plate 11 and are provided at equal intervals in the circumferential direction of the base plate 11. It is desirable.

The support piece 12 is a plate-like member that extends from the periphery of the base plate 11 in a direction orthogonal to the base plate 11 (the axial direction of the pipe 50). The support piece 12 serves as a guide member for inserting the pressing plate 30, the elastic member 40, and the pipe 50 into the cover member 10 when the jig is mounted, and mainly the pressing plate 30 after mounting the jig. This is a protective member for preventing damage to the elastic member 40 and the pipe 50. In this embodiment, as shown in FIGS. 1-3, it is set as the structure which provides the four support pieces 12 in the periphery of the baseplate 11 at equal intervals. More specifically, the four support pieces 12 are provided at positions corresponding to the four bolt through holes 11a.
Of course, the number and arrangement positions of the support pieces 12 are not limited to those of the present embodiment, and can be changed as appropriate. For example, one support piece 12 may be provided so as to integrally surround the periphery of the base plate 11. In addition, when providing the some support piece 12 in the periphery of the baseplate 11, it is desirable to set it as the structure provided at equal intervals.

  Moreover, in this embodiment, as shown in FIG.3 (b), it is set as the structure which forms the inner surface 12a of the four support pieces 12 as a curved surface curved inward. Further, the four inner surfaces 12 a are arranged concentrically around the center of the base plate 11. Here, “inward” means a direction toward the center of the base plate 11, and a direction away from the center of the base plate 11 opposite to the center is referred to as “outward”.

The thickness of the support piece 12 is preferably about 3 mm. Further, the length L in the longitudinal direction of the support piece 12 shown in FIG. 4B is desirably about 50 mm to 100 mm, and the length M in the lateral direction is preferably about 15 mm to 100 mm.
As a matter of course, the diameter P of the circle connecting the inner surfaces 12a of the four support pieces 12 shown in FIG. 4A needs to be equal to or larger than the outer diameter Q of the pipe 50. It is.
Moreover, as the support piece 12, rolled steel materials (for example, SS400 etc.) can be used. In this embodiment, it is set as the structure which forms the base plate 11 and the support piece 12 integrally with a rolled steel material.

The hose band 20 serves as a fixing means for fixing the support piece 12 to the outer periphery of the pipe 50 in the vicinity of the opening 52 (end 51).
In the present embodiment, as shown in FIG. 1, a hose band capable of integrally fixing the four support pieces 12 to the outer periphery of the pipe 50 by tightening the band band 21 with a screw 23 provided on the housing 22. 20 is used. Note that the configuration and number of the hose band 20 are not limited to those of the present embodiment, as long as the support piece 12 can be fixed to the outer periphery of the pipe 50 in the vicinity of the opening 52 (end 51). Any configuration may be used.
As a matter of course, the inner diameter R shown in FIG. 4B needs to be larger than the outer diameter S of the four support pieces 12 before the hose band 20 is tightened.

The pressing plate 30 is provided with a pressing force in a direction (axial direction of the pipe 50) perpendicular to the opening 52 (opening end surface 52a) by screwing in the bolt B. In this embodiment, as shown in FIG. 1, it is set as the structure which forms the press board 30 with a circular plate-shaped member.
The diameter T of the pressing plate 30 shown in FIG. 4A needs to be equal to or smaller than the diameter P of a circle formed by connecting the inner surfaces 12 a of the four support pieces 12. In this embodiment, the diameter T of the pressing plate 30 is configured to be the same as the diameter P of a circle formed by connecting the inner surfaces 12 a of the four support pieces 12. In other words, the pressing plate 30 is formed to have a size and an outer peripheral shape that are integrally in contact with the four inner surfaces 12a formed as curved surfaces.
The thickness of the pressing plate 30 is preferably about 6 mm.
Further, as the pressing plate 30, a thick rolled steel material (for example, SS400) can be used.

The elastic member 40 is disposed between the pressing plate 30 and the opening 52 of the pipe 50, and the opening end surface that is the periphery of the opening 52 via the pressing plate 30 to which the pressing force is applied by the bolt B. It is a member that is elastically deformed by being pressed against 52a.
In the present embodiment, as shown in a simplified manner in FIG. 1, the elastic member 40 is formed of a circular plate-like member.
The diameter of the elastic member 40 needs to be equal to or smaller than the diameter P of a circle formed by connecting the inner surfaces 12a of the four support pieces 12. In the present embodiment, the elastic member 40 is formed in the same shape and size as the pressing plate 30. That is, the elastic member 40 is formed to have a size and an outer peripheral shape that are integrally contacted with the four inner surfaces 12a formed as curved surfaces.

In the present embodiment, although not shown in detail, the pressing plate 30 and the elastic member 40 are configured to be bonded via an adhesive. Of course, the configuration in which the pressing plate 30 and the elastic member 40 are bonded together with an adhesive is not an essential configuration, and the pressing plate 30 and the elastic member 40 may not be bonded to each other.
The thickness of the elastic member 40 is preferably about 4 mm to 6 mm.
As the elastic member 40, it is desirable to use rubber such as natural rubber.

  Next, a process of attaching the opening sealing jig 1 according to the first embodiment of the present invention to the end 51 of the pipe 50 will be described with reference to FIGS.

First, referring to FIG. 4, provisional alignment between the elastic member 40 bonded to the pressing plate 30 and the opening end face 52a of the pipe 50 is performed.
Next, referring to FIG. 5A, the pressing plate 30, the elastic member 40, and the end portion 51 of the pipe 50 are inserted into the cover member 10.
Next, referring to FIG. 5B, the support piece 12 is fixed to the outer periphery of the pipe 50 in the vicinity of the opening 52 by tightening the hose band 20. At this time, it is necessary to fix the support piece 12 so that the base plate 11 is disposed at a position facing the opening 52 apart (a position spaced apart from the opening end face 52 in the axial direction of the pipe 50). More specifically, it is possible to apply a pressing force to the pressing plate 30 by screwing in the bolt B, and to elastically deform the elastic member 40 to the opening end surface 52a via the pressing plate 30 to bring it into close contact. It is necessary to fix the support piece 12 at a position where the bolt B can be secured (a position where a so-called screwing allowance can be secured).

Next, referring to FIG. 5C, the screw B is screwed into the opening 52 side through the nut N, whereby the pressing plate 30 is pressed and moved to the opening 52 by the bolt B. The elastic member 40 is pressed against the opening end face 52a through the pressing plate 30, and is further in close contact with the opening end face 52a in a state of being elastically deformed by screwing each bolt B. Thereby, the opening 52 is sealed with the elastic member 40.
As a method for screwing the bolts B, it is desirable to screw the bolts B arranged in the center of the base plate 11 first, and then screw the four bolts B arranged in the circumferential direction of the base plate 11 into the rack. .

  Through the above steps, the opening 52 of the pipe 50 is sealed with the opening sealing jig 1 as shown in FIG.

  The opening sealing jig 1 having such a configuration has the following effects.

The pressing plate 30, the elastic member 40, and the end portion 51 of the pipe 50 are inserted into the opening sealing jig 1, and the elastic member 40 is elastically deformed through the pressing plate 30 to which the pressing force of the bolt B is applied. By adopting a configuration in which the portion 52 is sealed, the opening 52 of the pipe 50 can be sealed with a simple configuration without performing a highly dangerous operation such as a main welding operation. Therefore, it is possible to provide the opening-use sealing jig 1 that has good working efficiency and can be safely attached.
Therefore, in particular, for the opening portion as a sealing jig for the pipe end portion of a large-scale air-conditioning and heating machine (about 40 refrigeration tons to 700 refrigeration tons) that is divided and transported and reassembled at the installation site and requires high airtightness When the sealing jig 1 is used, the working efficiency can be greatly improved as compared with the conventional sealing work involving the main welding work, and the work period can be greatly shortened and the cost can be reduced. Can be a particularly useful jig. Further, when reassembling the machine at the place where the air-conditioning machine is installed, the opening sealing jig 1 can be quickly removed from the end 51 simply by loosening the hose band 20, and the opening sealing jig with high work efficiency can be obtained. Tool 1 can be obtained. In addition, it is possible to effectively prevent foreign matters such as welding scraps from entering the pipe.

  Moreover, by using the structure which seals using the volt | bolt B and the nut N, it can be set as the opening | closing part sealing jig 1 which can maintain high airtightness by simple structure.

Further, the bolt through hole 11a has a configuration in which one is in the center of the base plate 11, concentric with the bolt through hole 11a provided in the center, and the same shape and size in the circumferential direction of the base plate 11. By providing the four bolt through holes 11a at equal intervals, a plurality of bolts B can efficiently apply a pressing force to the pressing plate 30. Therefore, the elastic member 40 can be efficiently brought into close contact with the opening end face 52a, and the opening 52 of the pipe 50 can be accurately sealed.
In addition, by using a plurality of bolts B, it is possible to give variations to the pressing force of each bolt. Therefore, even when the smoothness of the opening end face 52a is not uniform, the opening sealing jig can be sealed by making the elastic member 40 effectively follow the opening end face 52a by making the pressing force of each bolt B different. 1 can be used.

  Moreover, the bolt provided in the circumferential direction of the base plate 11 by setting the distance from the center of four through holes 11a for bolts provided in the circumferential direction of the base plate 11 to the outer periphery in the radial direction of the base plate 11 to about 20 mm. The through-hole 11a for use can be provided in the vicinity of the outer periphery of the base plate 11. Therefore, the elastic member 40 can be brought into close contact with the opening end face 52a with high accuracy.

  In addition, the support plate 12 is provided so as to extend from the peripheral edge of the base plate 11 in the direction orthogonal to the base plate 11 (the axial direction of the pipe 50). The support piece 12 can be used as a guide member when the member 40 and the pipe 50 are inserted into the cover member 10. Further, after the jig is mounted, the support piece 12 can be used mainly as a protective member for preventing damage to the pressing plate 30, the elastic member 40, the pipe 50, and the bolt B. Further, by providing the four support pieces 12 at positions corresponding to the four through-holes 11a for bolts, the support piece 12 can be used as a protective member for preventing damage to the bolt B more efficiently. it can.

  Moreover, if it is set as the structure which makes the length L of the longitudinal direction of the support piece 12 about 50 mm-100 mm, especially as a sealing jig for the pipe end parts of the large sized air-conditioning machine conveyed separately and reassembled in an installation place. When the opening sealing jig 1 is used, the opening sealing jig 1 can be removed easily and quickly even in a limited space at the installation location. Therefore, when using as a sealing jig for the pipe end part of a large sized air-conditioning machine, it can be set as a jig with good workability.

  Moreover, it can be set as the cover member 10 with sufficient manufacturing efficiency by setting it as the structure which forms the base plate 11 and the support piece 12 integrally with a rolled steel material.

  In addition, by forming the pressing plate 30 with a size that abuts on the inner surfaces 12 a of the four support pieces 12, the elastic member 40 has the same shape and the same size as the pressing plate 30. While pressing the pressing plate 30 and the elastic member 40 with the support piece 12 more efficiently, a pressing force by screwing the bolt B can be applied. Therefore, the pressing force of the bolt B can be efficiently transmitted to the pressing plate 30 and the elastic member 40. Accordingly, the opening 52 can be sealed with the opening sealing jig 1 with higher accuracy. Further, by adopting a configuration in which the pressing plate 30 and the elastic member 40 are bonded together, it is not necessary to align the pressing plate 30 and the elastic member 40, and the opening sealing jig 1 can be further improved in work efficiency. it can.

  Next, with reference to FIGS. 6 to 8, modified examples 1 to 5 of the opening sealing jig 1 according to the first embodiment of the present invention will be described.

  First, with reference to FIG. 6A, a first modification of the opening sealing jig 1 according to the first embodiment of the present invention will be described. In the first modification, the length of the bolt B is longer or shorter than the first embodiment of the present invention described above. Since other configurations are the same as those of the first embodiment of the present invention described above, the same members and the same functions are denoted by the same reference numerals, and detailed description thereof will be omitted.

By setting it as such a structure, as shown to Fig.6 (a), the shallowness can be provided in the screwing depth of the some volt | bolt B. FIG. Therefore, the pressing plate 30 and the elastic member 40 can be inclined with respect to the axial direction of the pipe 50 and pressed with the bolt B. Therefore, even when the opening end face 52a is inclined in the axial direction of the pipe 50, the opening 52 can be accurately sealed by the opening sealing jig 1. Moreover, it is possible to provide the opening sealing jig 1 in which variations can be changed only by changing the length of the bolt B without changing the specifications of the cover member 10, the pressing plate 30, and the elastic member 40.
In addition, as a structure which provides the shallowness in the screwing depth of the several volt | bolt B, it is not restricted to the structure of this modification 1, By adjusting the screwing amount of the several volt | bolt B comprised by the same length, It is good also as a structure which provides shallowness in the screwing depth of the some volt | bolt B. FIG.

Next, with reference to FIG.6 (b), the modification 2 of the sealing jig 1 for openings which concerns on the 1st Embodiment of this invention is demonstrated. In the second modification, the configuration of the elastic member 40 is changed with respect to the first embodiment of the present invention described above.
More specifically, as shown in FIG. 6B, the contact surface 41 of the elastic member 40 with the opening end surface 52 a is inclined in the axial direction of the pipe 50. Since other configurations are the same as those of the first embodiment of the present invention described above, the same members and the same functions are denoted by the same reference numerals, and detailed description thereof will be omitted.

  With such a configuration, even if the opening end face 52a is inclined in the axial direction of the pipe 50 as shown in FIG. 52 can be accurately sealed. Moreover, it is possible to provide the opening sealing jig 1 in which variations can be changed only by changing the shape of the elastic member 40 without changing the specifications of the cover member 10, the pressing plate 30, and the bolt B.

Next, with reference to FIG. 7, a modified example 3 of the opening sealing jig 1 according to the first embodiment of the present invention will be described. In the third modification, the configuration of the pressing plate 30 and the elastic member 40 is changed with respect to the first embodiment of the present invention described above.
More specifically, as shown in FIG. 7, the pressure plate 30 is made of a hollow body having one pipe 61 having a valve 60 on the side surface 31 of the pressure plate 30 and having an opening 32 a on the lower surface 32 of the pressure plate 30. It constitutes. In addition, the piping 61 is provided by extending the pressing plate 30 in the horizontal direction. Further, the elastic member 40 is provided with a through hole 42 communicating with the opening 32 a of the pressing plate 30. Since other configurations are the same as those of the first embodiment of the present invention described above, the same members and the same functions are denoted by the same reference numerals, and detailed description thereof will be omitted.

Here, “the lower surface of the pressing plate 30” means an end surface of the pressing plate 30 on the side facing the opening 52, and the opposite end surface is the upper surface.
Moreover, when using this press plate 30, it is necessary to position the press plate 30 so that the piping 61 may be arrange | positioned between the adjacent support pieces 12. FIG.

  By setting it as such a structure, it can be set as the opening part sealing jig 1 which can perform a liquid draining operation | work, a gas injection | pouring operation | work, etc. in the state which sealed the opening part 52. FIG.

Next, with reference to Fig.8 (a), the modification 4 of the sealing jig 1 for openings which concerns on the 1st Embodiment of this invention is demonstrated. In the fourth modification, the configurations of the base plate 11, the pressing plate 30, and the elastic member 40 are changed with respect to the first embodiment of the present invention described above.
More specifically, as shown in FIG. 8 (a), a single pipe 61 having a valve 60 is provided on the upper surface 33 of the pressing plate 30, and pressing is performed by a hollow body having an opening 32 a on the lower surface 32 of the pressing plate 30. The plate 30 is configured. Further, a pipe 61 extending in a direction orthogonal to the pressing plate 30 is provided in the vicinity of the outer periphery of the pressing plate 30. In addition, the elastic member 40 is provided with a through hole 42 communicating with the opening 32 a of the pressing plate 30. Further, a pipe insertion notch 11 b for inserting the pipe 61 is provided on the outer periphery of the base plate 11. Since other configurations are the same as those of the first embodiment of the present invention described above, the same members and the same functions are denoted by the same reference numerals, and detailed description thereof will be omitted.

  By setting it as such a structure, it can be set as the opening part sealing jig 1 which can perform a liquid draining operation | work, a gas injection | pouring operation | work, etc. in the state which sealed the opening part 52. FIG. Moreover, even if it is the structure provided with the piping 61 extended in the direction orthogonal to the press plate 30, the cover member 10 can be arrange | positioned in a desired position.

Next, with reference to FIG.8 (b), the modification 5 of the sealing jig 1 for openings which concerns on the 1st Embodiment of this invention is demonstrated. In the fifth modification, the configuration of the base plate 11, the pipe 61, and the pipe insertion notch 11b is changed with respect to the above-described fourth modification.
More specifically, the base plate 11 is not provided with the bolt through hole 11a in the center. In addition, a pipe 61 extending from the upper surface 33 in a direction orthogonal to the pressing plate 30 is provided at the center of the pressing plate 30 and the pipe 61 is bent at approximately 90 degrees at an intermediate position. Further, the pipe insertion notch 11 b is a notch extending to the center of the base plate 11. Since the other configuration is the same as that of the modified example 4 described above, the same members and the same functions are denoted by the same reference numerals, and detailed description thereof is omitted.

  By setting it as such a structure, it can be set as the opening part sealing jig 1 which can perform a liquid draining operation | work, a gas injection | pouring operation | work, etc. in the state which sealed the opening part 52. FIG. Moreover, even if it is a structure provided with the piping 61 extended in the direction orthogonal to the press plate 30, while being able to arrange | position the cover member 10 in a desired position, it becomes possible to give a variation in the laying direction of the piping 61. FIG. .

  Next, an opening sealing jig 2 according to a second embodiment of the present invention will be described with reference to FIG.

The opening sealing jig 2 according to the second embodiment of the present invention is a jig for sealing the opening 71 provided at an arbitrary position of the hollow main body 70, and supports the base plate 110. The cover member 100 is composed of a piece 120, a tack welded portion 200 as a fixing means, a pressing plate 300, and an elastic member 400.
Here, the “hollow main body” means a hollow structure having an opening that can be sealed with the opening sealing jig 2. For example, it is the main body of a large-scale air conditioning machine that requires airtightness, various large containers that require airtightness, and the like.
In the following description, the same configuration and the same as the opening sealing jig 1 according to the first embodiment of the present invention described above in the opening sealing jig 2 according to the second embodiment of the present invention. Description of what fulfills the function is omitted, and only different parts are described.

  As shown in FIG. 9, the opening sealing jig 2 according to the second embodiment of the present invention has a configuration in which one bolt through hole 110 a is provided at the center of the base plate 110. Further, the support piece 120 is fixed to the opening end surface 71a of the main body 70 by the tack welded portion 200 formed by tack welding. Further, the pressing plate 300 is provided with a convex portion 310 that fits into the opening 71. Further, the elastic member 400 having a through-hole fitted in the convex portion 310 at the center is attached to the lower surface 320 of the pressing plate 300 via an adhesive.

  By adopting such a configuration, it is possible to safely seal the opening 71 of the hollow main body 70 different from the pipe with a simple configuration, maintain high airtightness, and quickly remove it. It can be set as the sealing jig 2 for openings. In addition, it is possible to align the opening sealing jig 2 simply by fitting the protrusion 310 to the opening 71, and to efficiently dispose the elastic member 400 on the periphery of the opening 71. . Therefore, it is possible to make the opening sealing jig 2 capable of further improving the efficiency of the mounting operation and maintaining high airtightness. Furthermore, by using tack welding as the fixing means, it is possible to make the opening sealing jig 2 safer and more workable than when using the main welding.

  In this configuration, as shown in FIG. 9A, it is desirable to provide a gap V between the pressing plate 300 and the elastic member 400 and the support piece 120. By setting it as such a structure, even when using tack welding, the damage accompanying baking of the press board 300 and the elastic member 400 can be prevented effectively. The gap V is desirably about 3 mm to 5 mm.

  Next, modified examples 1 and 2 of the opening sealing jig 2 according to the second embodiment of the present invention will be described with reference to FIGS.

First, with reference to FIG. 10, a modification 1 of the opening sealing jig 2 according to the second embodiment of the present invention will be described. The first modification is obtained by changing the configuration of the pressing plate 300 with respect to the opening sealing jig 2 according to the second embodiment of the present invention described above.
More specifically, as shown in FIG. 10B, the lower surface 320 of the pressing plate 300 has a shape that follows the curvature of the opening end surface 71 a of the main body 70. Since other configurations are the same as those of the opening sealing jig 2 according to the second embodiment of the present invention described above, the same members and the same functions are denoted by the same reference numerals, and detailed description will be given. Shall be omitted.

  With such a configuration, even when the opening 71 to be sealed is formed on the curved surface, the elastic member 400 can be closely adhered to the curved surface with the pressing plate 300 with high accuracy. Therefore, it is possible to provide the opening sealing jig 2 that can be safely sealed with a simple configuration, can maintain high airtightness, and can be quickly removed.

Next, with reference to FIG. 11, a modified example 2 of the opening sealing jig 2 according to the second embodiment of the present invention will be described. In the second modification, the configuration of the support piece 120 is changed with respect to the opening sealing jig 2 according to the second embodiment of the present invention described above.
More specifically, as shown in FIG. 11, the support piece 120 is configured to extend outwardly from the peripheral edge of the base plate 110 toward the opening end surface 71 a of the main body 70. Since other configurations are the same as those of the opening sealing jig 2 according to the second embodiment of the present invention described above, the same members and the same functions are denoted by the same reference numerals, and detailed description will be given. Shall be omitted.

  With such a configuration, a sufficient gap can be provided between the pressing plate 300 and the elastic member 400 and the support piece 120. Therefore, even if it is the structure which uses tack welding, the damage accompanying baking of the press plate 300 and the elastic member 400 can be prevented effectively.

  In addition, in this embodiment, it was set as the structure which uses one each of a press plate and an elastic member, However, It is not necessarily restricted to such a structure, The number of a press plate and an elastic member can be changed suitably.

  Moreover, in 1st Embodiment of this invention, although it was set as the structure which fixes the support piece 12 to the pipe 50 with the hose band 20, in addition to this structure, it is set as the structure which fixes the edge part of the support piece 12 by tack welding. Also good. With such a configuration, the fixing strength can be further increased.

  According to the present invention, it is possible to realize an opening sealing jig that can safely seal an opening such as a pipe end with a simple configuration, can maintain high airtightness, and can be quickly removed. Therefore, industrial applicability is high as a sealing jig for an opening used when a large-scale air conditioning machine installed in a large commercial facility or station building is divided and transported.

DESCRIPTION OF SYMBOLS 1 Sealing jig for opening part 2 Sealing jig for opening part 10 Cover member 11 Base plate 11a Through hole for bolt 11b Notch part for piping insertion 12 Support piece 12a Inner surface 12b Hose band fitting groove 20 Hose band 21 Band Band 22 Housing 23 Screw 30 Pressure plate 31 Side surface 32 Lower surface 32a Opening 33 Upper surface 40 Elastic member 41 Contact surface 42 Through hole 50 Pipe 51 End portion 52 Opening portion 52a Opening end surface 60 Valve 61 Pipe 70 Main body 71 Opening portion 71a Opening portion End surface 100 Cover member 110 Base plate 120 Support piece 200 Tack welded portion 300 Press plate 310 Convex portion 320 End surface 400 Elastic member B Bolt B1 Tool fitting recess L Length M Length N Nut P Diameter Q External shape R Internal diameter S Out Diameter T Diameter V Clearance

Claims (4)

  An opening sealing jig for sealing an opening such as an end of a pipe, the base plate having one or more bolt through holes for screwing bolts through nuts, and the base plate A cover member comprising one or a plurality of support pieces provided extending from the peripheral edge of the cover, a fixing means for fixing the support piece in the vicinity of the opening, and a pressing force is applied by screwing the bolt. And the elastic plate disposed between the pressing plate and the opening, and the support plate is disposed so that the base plate is disposed at a position facing the opening. An opening sealing jig characterized by being fixed by a fixing means and elastically deforming the elastic member with the pressing plate so as to be in close contact with at least the periphery of the opening, thereby sealing the opening.   The support piece is composed of a plurality of pieces extending in a direction orthogonal to the base plate, and the pressing plate is sized to abut on the inner surfaces of the plurality of support pieces. Sealing jig for opening as described.   The opening sealing jig according to claim 1 or 2, wherein the fixing means is a hose band.   The pressing plate includes a pipe with a valve, and is configured by a hollow body having an opening on an end surface facing the opening, and the elastic member includes a through hole communicating with the opening of the pressing plate. The sealing jig for openings according to any one of claims 1 to 3.

Images