JP3720139B2 - Gas meter suspension unit - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a gas meter suspension unit for attaching a gas meter such as city gas to a building wall or the like. In particular, the present invention relates to a gas meter suspension unit that can reduce the mounting space of the gas meter and simplify the mounting work.
[0002]
[Prior art]
The prior art will be described using a standard city gas gas meter as an example.
FIG. 6 is a diagram illustrating a standard installation example of a city gas gas meter. (A) is a front view, (B) is a side view.
[0003]
In FIG. 6, the gas meter 207 is installed in such a manner as to be suspended from the inlet side connecting pipe 281 and the outlet side connecting pipe 291. Each connection pipe 281 and 291 is fixed to the building wall 202 by pipe supports 297a and 297b. Each of the connecting pipes 281 and 291 bends 180 ° on the gas meter 207 and is connected to the gas meter 207 downward. Unions 213 and 227 are provided between the connection pipes 281 and 291 and the inlet / outlet of the gas meter 207. A gas stopper 213, which is a main valve for opening and closing the gas, is installed in the inlet side connection pipe 281 below the gas meter 207. A test port 235 is installed in the outlet side connection pipe 291 below the gas meter 207. The test port 235 has a small threaded opening (usually closed by a plug) on the side of the pipe, and is used as an attachment port for an air purge or a test pressure gauge. A gas supply source pipe 205 is connected below the gas stopper 213. Below the test port 235, a flexible pipe 209 connected to a gas demand destination is connected.
[0004]
[Problems to be solved by the invention]
The above-described conventional gas meter installation method has the following problems.
(1) The required installation space was large. In particular, since the connecting pipes 281 and 291 pass through the back side of the gas meter 207 and there are also pipe supports 297, the gas meter 207 projects forward by that amount, so the installation space dimension in the depth direction is large. It was.
[0005]
(2) There were many man-hours for installing the gas meter. That is, it takes time and effort to install the pipe support 297 and the connecting pipes 281 and 291, the gas stopper 213, and the test port 235 on the inlet side and the outlet side.
[0006]
The present invention provides a gas meter suspension unit for attaching a gas meter such as city gas to a building wall or the like, which can reduce the installation space of the gas meter and can simplify the installation work. For the purpose. It is another object of the present invention to provide a gas meter suspension unit that has these advantages and is inexpensive and attractive.
[0007]
[Means for Solving the Problems]
A gas meter suspension unit related to the present invention is a gas meter suspension unit for installing a gas meter and its inlet / outlet piping on a building wall, etc .; a joint for connecting a gas meter inlet with a connecting portion facing downward; and An inlet side portion including a gas stopper having a connection port with an inlet side pipe connected to a side outer side of the joint, a gas meter outlet connection joint with the connection portion facing downward, and An outlet side portion including a connection port to the outlet side pipe and a test port connected to the outside of the side, and a fixing bracket for fixing the inlet side portion and the outlet side portion to a building wall or the like. It is characterized by.
Furthermore, it is preferable to provide a cover that covers the entry side, the exit side, and the fixing bracket.
[0008]
That is, the inlet / outlet piping of the gas meter including the gas stopper and the test port is unitized and can be attached to the building wall or the like together at the upper part of the gas meter. Therefore, the installation space is small and the number of construction steps can be reduced. The cover functions to prevent dust, improve aesthetics, and simplify the surface treatment of internal members.
[0009]
Another gas meter suspension unit related to the present invention is a gas meter suspension unit for installing a gas meter and its inlet / outlet piping on a building wall or the like; a joint for connecting a gas meter inlet with a connecting portion facing downward And an inlet side portion including a gas stopper having a connection port with an inlet side pipe connected to the lateral outer side of the joint, a gas meter outlet connection joint with the connection portion facing downward, and this An outlet side portion including a connection port with the outlet side pipe and a test port, which are connected to the outer side of the joint, and a fixing bracket for fixing the inlet side portion and the outlet side portion to a building wall or the like. The connecting portion includes a union, and the union has a snap ring type stop ring for preventing the union nut from falling off.
[0010]
After fitting the union nut into the union part, it is possible to prevent the union nut from falling off by attaching the stop ring to the union part in a snap ring manner. On the other hand, if you try to put a union nut from the union side of the pipe, you will have to divide the pipe, which will increase the man-hours and assembly man-hours for pipe parts. Can be reduced.
[0011]
Another gas meter suspension unit related to the present invention is a gas meter suspension unit for installing a gas meter and its inlet / outlet piping on a building wall or the like; a joint for connecting a gas meter inlet with a connecting portion facing downward And an inlet side portion including a gas stopper having a connection port with an inlet side pipe connected to the lateral outer side of the joint, a gas meter outlet connection joint with the connection portion facing downward, and this An outlet side portion including a connection port with the outlet side pipe and a test port, which are connected to the outer side of the joint, and a fixing bracket for fixing the inlet side portion and the outlet side portion to a building wall or the like. Provided; the inlet side has a 90 ° elbow-shaped pipe member connecting the gas meter inlet connection joint and the gas stopper, the gas stopper side of the pipe member has a flange joint, and the gas meter side of the pipe member has a union. It is characterized by that.
Since the flange can usually be the thinnest among the various joints, the overall width of the gas meter suspension unit can be reduced.
[0012]
Another gas meter suspension unit related to the present invention is a gas meter suspension unit for installing a gas meter and its inlet / outlet piping on a building wall or the like; a joint for connecting a gas meter inlet with a connecting portion directed downward And an inlet side portion including a gas stopper having a connection port with an inlet side pipe connected to the lateral outer side of the joint, a gas meter outlet connection joint with the connection portion facing downward, and this An outlet side portion including a connection port with the outlet side pipe and a test port, which are connected to the outer side of the joint, and a fixing bracket for fixing the inlet side portion and the outlet side portion to a building wall or the like. Provided; The outlet side has a 90 ° elbow-shaped tube member connecting the joint for connecting the gas meter outlet and the test port, and the tube member is integral with the test port.
The gas meter suspension unit can be made smaller than using a separate tee (with plug) as the test port. In addition, the number of joint connection points can be reduced, and the number of assembly steps can be reduced.
[0013]
Moth Sumeta hanger unit of the present invention is a gas meter hanger unit for installing the gas meter and the input and output side piping to building wall or the like;
Π-shaped basic member (π-shaped member) composed of a transverse member extending in the lateral direction and leg members depending on the lower left and lower right of the transverse member, and fixing for fixing the π-shaped member to a building wall or the like A communication path that opens to the end portion and the end surface of the leg portion is formed between the left and right end portions of the cross member of the π-shaped member and the leg portions close to the end portion. In addition, the left and right communication paths are cut off from each other, a gas plug is connected to one end of the cross member, and a test port is connected to the other end. The gas meter outlet connecting joint is connected to the lower end of the leg near the test port , and the gas flow path is deflected 90 ° upward from the inside in the gas stopper .
The structure of the gas meter suspension unit can be made strong and simple by the π-shaped member, and the number of assembly steps can be reduced. In addition, the appearance is also clean.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, it demonstrates more concretely, referring drawings.
FIG. 1 is a diagram showing an overall configuration of a gas meter suspension unit according to one embodiment of the present invention. (A) is a plan view, (B) is a front view, and (C) is a side view.
The gas meter suspension unit 1 of FIG. 1 suspends the gas meter 7 and connects the inlet side pipe 5, the gas meter inlet 25, the outlet 27, and the outlet side pipes 9 and 10 to each other. And the cover 3 covers the whole.
[0015]
The gas meter suspension unit 1 is roughly composed of a gas stopper 13, an entry side member 19, a fixing bracket 41, and an exit side member 33.
The gas plug 13 is a valve that opens and closes the gas supply to the gas meter 7, and has a connection port 11 with the inlet side pipe 5 that rises on the left side of the gas meter 7.
The inlet side member 19 is a member that connects the gas stopper 13 and the gas meter inlet 25 and has an elbow shape as a whole.
The outlet side member 33 is a member that connects the gas meter outlet 27 and the outlet side pipes 9, 10, and is a member that has a three neck tee connected to the elbow as a whole.
The fixing bracket 41 is a member for connecting the entry side member 19 and the exit side member 33 and fixing them to the building wall 2 or the like.
[0016]
Hereinafter, each part will be described in detail.
The inlet side pipe 5 is a pipe that supplies gas to each individual consumer such as each household or store, and is a flexible corrugated pipe. The pipe 5 rises toward the gas meter suspension unit 1 on the left side of the gas meter 7. A flexible joint 5 a is attached to the upper end of the pipe 5.
[0017]
The gas stopper 13 is an open / close valve with a lock mechanism (see Japanese Utility Model Laid-Open No. 6-53866), and opens and closes by pinching the knob 13a on the front face of the cock. A connection port 11 having a female screw is formed on the inlet side of the gas plug 13. A flange 15 is formed on the outlet side 12 of the gas stopper 13. Since this flange joint structure can be made thin, space can be saved. Moreover, since there are few processed parts unexpectedly, it is cheap. Within the gas plug 13, the gas flow path is deflected 90 ° from upward to right. Reference numeral 13b beside the front knob 13a is a lock mechanism.
[0018]
The entry side member 19 is an elbow-shaped member, in which the gas flow path is deflected downward from the right. A flange 17 is formed on the entry side of the entry member 19. The flange 17 and the flange 15 of the gas plug 13 are connected by being tightened by a screw 16. An O-ring (not shown) is sandwiched between the flanges to seal the gas. The upper half of the entry side member 19 has a block shape having a gas flow path in the center, and the back surface thereof is attached to a mounting portion 49 of the fixing bracket 41 with a screw as shown in FIG. It is fixed at 50.
[0019]
The lower half of the entry side member 19 is a downcomer 21 and hangs downward.
FIG. 4 is a cross-sectional view showing details of the structure of the downcomer and the union.
The lower end portion of the downcomer 21 is a union portion 21a to which a packing 93, a union nut 23, and a stop ring 91 are attached. The stop ring 91 has a ring shape and is used for preventing the union nut 23 from falling. The stop ring 91 is in a circumferential groove 21b that is horizontally cut into the outer surface of the union portion 21a. The stop ring 91 has one notch (not shown) on the circumference. By expanding the notch, the stop ring 91 can be inserted into the outer periphery of the union portion 21a and pushed into the groove 21b. With such a structure of the stop ring 91, the downcomer 21 can be integrated (partially) with the entry side member 19, so that the processing cost and assembly man-hour can be reduced. In this embodiment, the entry side member 19 is ductile cast iron.
[0020]
The union nut 23 has a cap nut-like structure, and on its inner surface, a stop ring engaging portion 23a is formed at the upper portion and a female screw 23b is formed at the lower portion. The stop ring engaging portion 23 a is a conical surface having a downwardly expanding taper shape and abuts on the outer peripheral upper surface of the stop ring 91 to support the union nut 23. The female screw 23 b is screwed with a male screw 25 a on the outer periphery of the gas meter inlet 25. The inner diameter of the thread of the female screw 23b is larger than the outer diameter of the stop ring 91. The packing 93 is fitted into the outer periphery of the tip end portion of the union portion 21a. The upper surface of the gas meter inlet 25 comes into contact with the lower surface of the packing 93 to seal the gas. This union structure is the same for the gas meter outlet.
[0021]
Returning to FIG. 1, the outlet member 33 is a left half elbow-like portion connected to a three-end tee-like portion at the right end, and is made of cast iron in this embodiment. In the outlet member 33, the gas flow path is deflected 90 degrees from the upward direction to the right direction, and then further deflected by 90 degrees to be divided into upper and lower parts. Note that the test port 35 is a port that is opened only in a special case such as air purge or pressure measurement (airtight test), and is normally closed by a plug 35a. The structure of the lower left part (downfall pipe 31, union 29) of the outlet side member 33 and the structure of the fixing part with the fixing bracket 41 on the back surface of the elbow part are the same as those of the inlet side member 19.
[0022]
The three-mouth tee portion at the right end of the outlet member 33 has an upper connection port 37 and a lower connection port 39 that are shaped like a tee that opens up and down, and in the middle of both the ports 37 and 39 in the forward direction. It has a test port 35 that opens. As described above, the test port 35 is normally closed by the plug 35a. The outlet pipe 10 is connected to the upper connection port 37 via a flexible joint 10a, and the outlet side pipe 9 is connected to the lower connection port 39 via a flexible joint 9a. The lower pipe 9 falls on the right side of the gas meter 7. Both outlet pipes are usually flexible corrugated pipes.
[0023]
The fixing bracket 41 is for connecting the entrance side member 19 and the exit side member 33 and fixing them to the building wall 2. In this embodiment, it is a bent product of a steel plate.
FIG. 2 is a diagram showing details of the fixture 41 of the gas meter suspension unit of FIG. (A) is a front view, (B) is a side view.
[0024]
As shown in FIG. 2 (B), the fixing bracket 41 has a shape in which a convex portion composed of legs 47 and 51 and a mounting portion 49 is projected at the center of the wall fixing portions 45 and 53 on both the upper and lower sides. I am doing. As shown in FIG. 2A, the attachment portion 49 projects to the left and right sides. The wall fixing portions 45 and 53 are flat plate portions applied to the building wall 2, and screw holes 45a and 53a for passing fixing screws (reference numeral 46 in FIG. 1) are opened side by side at four places.
[0025]
A cover hook 43 is formed at the upper end of the upper wall fixing portion 45. The cover hook 43 is lifted one step before the wall fixing portion 45, and the cover is attached by hooking an upper nail (reference numeral 61 in FIG. 3) at the back of the cover between the back surface and the building wall. Two lower and right cover hooks 55 are also formed at the lower portion of the lower wall fixing portion 53. The cover hook 55 has a shape in which two upward cuts are made in a part of the wall fixing portion 53 and the gap between the two cuts is lifted forward. The cover hook 55 is hooked with a lower claw (reference numeral 73 in FIG. 3) below the cover.
[0026]
Four screw holes 49b and 49d are formed in both end portions 49a and 49c of the attachment portion 49, respectively. As shown in FIG. 1A, the back surface of the entry side member 19 is in contact with the left end portion 49a and is fixed with screws 50, and the back surface of the exit side member 33 is fixed to the right end portion 49c. It abuts and is fixed with screws 50.
[0027]
FIG. 3 is a diagram showing details of the cover 3 of the gas meter suspension unit of FIG. (A) is a plan view, (B) is a front view, (C) is a right side view, (D) is a left side view, and (E) is a detailed sectional view of a lid mounting portion.
The cover 3 has a horizontally long box shape as a whole, and is a plastic (AES) molded product in this embodiment. As shown in FIG. 3C, the cover 3 has a cross-section that has an upper surface 65 inclined slightly downward, a vertical front surface 67 facing forward, and a lower edge of the front surface 67 horizontally from the bottom. It has a facing bottom surface 71. As shown in FIG. 3B, side surfaces 66 and 68 exist on the left and right sides of the cover 3, respectively.
[0028]
An upper claw 61 and a lower claw 73 are formed at the center of the inner edges of the upper surface 65 and the lower surface 71, respectively. Each nail is bent and protrudes inside the cover 3. The upper claw 61 is formed with a width of about 1/4 of the width of the cover 3, and the lower claw 73 is formed with two claws with a width of about 1/6 of the width of the cover 3 at the left and right ends. Has been. The claws 61 and 73 engage with the cover hooks 43 and 55 of the fixing metal fitting shown in FIG. Generally, after putting the upper claw 61 into the upper cover hook 43 from above, the entire cover 3 is elastically deformed and the lower claw 73 is put into the lower cover hook 55 from below. In addition, each nail | claw 61,73 may be formed outward and the cover hook of a fixing metal fitting may be formed inward.
[0029]
U-shaped openings 63 are formed in the right end portions of the upper surface 65 and the lower surface 71 of the cover 3, respectively. Both openings 63 are for passing the outlet pipes 9 and 10 (FIG. 1), respectively. A lid 84 is inserted into the upper opening 63. As shown in FIG. 3E, the lid 84 enters and is locked into the groove 81 of the lid attachment portion 83 formed in the opening 63.
[0030]
A gas stopper operation hole 87 is opened at the left end of the front surface 67 of the cover 3. The gas plug operation hole 87 is a circular hole, and as shown in FIGS. 1A and 1B, a knob 13a of the gas plug 13 protrudes from the gas plug 13 so that the gas plug 13 can be opened and closed. A sealing projection 85 is provided on the right side of the gas plug operation hole 87. The projection 85 is a plate-like projection and has a hole 85a. Between the hole 85a and the sealing hole of the gas stopper 13 (opened in the knob 13a), the gas stopper 13 can be sealed with a wire and sealing lead. This sealing of the gas stopper is a measure for reliably shutting off the gas supply when the gas consumer is absent for a long time (such as an empty house).
[0031]
A test port cover 69 is provided on the right end portion of the front surface 67 of the cover 3 so as to protrude forward. The test port cover 69 has a bottomed cylindrical shape, and the plug 35a of the test port is accommodated therein as shown in FIG. Since the plug 35a is hidden by the test port cover 69, it is necessary to remove the cover 3 in order to open and close the plug 35a.
[0032]
FIG. 5 is a view showing a gas meter suspension unit (π-shaped member type) according to another embodiment of the present invention. (A) is a plan view, (B) is a front view, and (C) is a right side view. In FIG. 5, the reference numerals having the same last two digits as the reference numerals in FIG. 1 (for example, 121 and 21) indicate parts having the same names except for those specially described below.
[0033]
The feature of the gas meter suspension unit of FIG. 5 is that the unit is formed with the π-shaped member 120 as a base.
That is, the unit 101 includes a π-shaped basic member (π-shaped member 120) including a transverse member 120 extending in the lateral direction and leg members 121 and 131 depending on the lower left and lower right of the transverse member 120. The π-shaped member 120 is fixed to the building wall 2 by a fixing metal 141. Specifically, as shown in FIG. 5C, an attachment screw 150 with the fixing bracket 141 is set on the back side of the central portion of the transverse member 122, and the π-shaped member 122 is fixed to the fixing bracket 141. ing.
[0034]
Between the left and right end portions of the cross member 122 of the π-shaped member 120 and the leg portions 121 and 131 near the end portions, gas communication paths 119a and 133a that open to the end portions and the end surfaces of the leg portions are provided. Is formed. As a matter of course, the left and right communication paths are blocked from each other, and the gas does not flow in the transverse member 122 in a short circuit.
The gas stopper 13 is connected to the left end of the cross member 122 by flange connection, and the test port 135 is connected to the right end. In addition, a gas meter inlet connection joint (union 123) is connected to the lower end of the leg 121 near the gas plug 13, and a gas meter outlet connection joint (union 129) is connected to the lower end of the leg 131 near the test port 135.
[0035]
Because of such a configuration centered on the π-shaped member 120, the integration of the left and right pipes and the gas meter inlet / outlet connection portion is stronger than in the unit of the embodiment of FIG. Also, since the appearance is neat and well-controlled, the cover can be eliminated. In the present embodiment, the π-shaped member is made of aluminum die casting, and a meat stealing hole 122a is formed in the central portion of the crossing member 122 to reduce the weight.
[0036]
In the embodiment of FIG. 5 as well, the gas plug 13 is connected to one end of the cross member 122 by the flange 117, and the advantages thereof are as described above.
Further, the test port 135 is integrally formed at one end of the cross member 122, and the advantages thereof are as described above.
The inlet side pipe 5 and the gas stopper 13 are the same as those in the embodiment of FIG. Note that the sealing projection of the gas plug 13 protrudes (protrusion 118) in front of the entry side portion 119 of the π-shaped member 120.
The structure of the connecting portion between the left and right downcomer pipes (leg portions) 121 and 131 and the unions 123 and 129 is the same as the unit of the embodiment of FIG.
The structures around the outlet pipes 9 and 10 and their connection ports 139 and 137 and the test port 135 are also the same as those of the unit of the embodiment of FIG.
[0037]
The gas meter suspension unit of the present invention can be modified as follows.
(1) Install the inspection port on the exit side sideways.
(2) Provide a branch joint and make both the outlet piping downward.
[0038]
【The invention's effect】
As is clear from the above description, the gas meter suspension unit of the present invention can reduce the installation space of the gas meter and simplify the installation work. Furthermore, it is possible to provide a gas meter suspension unit that has these advantages and is inexpensive and attractive.
In particular, when a cover for covering the unit is provided, there are effects such as dust prevention, improvement in aesthetics, and simplification of the surface treatment of the internal member.
[0039]
When the union part has a snap ring type stop ring, it is possible to further reduce the processing man-hours and assembly man-hours.
In addition, when the gas stopper is a flange connection type, the overall width of the gas meter suspension unit can be made narrower.
When the test port is integrated with the outlet side, the gas meter suspension unit can be made smaller than a separate tee (with a plug). In addition, the number of joint connection points can be reduced, and the number of assembly steps can be reduced.
In the embodiment having the π-shaped member, the structure of the gas meter suspension unit can be made strong and simple, and the number of assembling steps can be reduced. In addition, the appearance is also clean.
[Brief description of the drawings]
FIG. 1 is a diagram showing an overall configuration of a gas meter suspension unit according to one embodiment of the present invention. (A) is a plan view, (B) is a front view, and (C) is a side view.
FIG. 2 is a view showing details of a fixture 41 of the gas meter suspension unit of FIG. (A) is a front view, (B) is a side view.
FIG. 3 is a view showing details of a cover 3 of the gas meter suspension unit of FIG. 1; (A) is a plan view, (B) is a front view, (C) is a right side view, (D) is a left side view, and (E) is a detailed sectional view of a lid mounting portion.
FIG. 4 is a cross-sectional view showing details of the structure of the downcomer and the union.
FIG. 5 is a view showing a gas meter suspension unit (π-shaped member type) according to another embodiment of the present invention. (A) is a plan view, (B) is a front view, and (C) is a right side view.
FIG. 6 is a diagram showing a standard installation example of a city gas gas meter. (A) is a front view, (B) is a side view.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Suspension unit 2 Building wall 3 Cover 5 Input side piping 5a Flexible joint 7 Gas meter 9, 10 Outlet side piping 9a, 10a Flexible joint 11 Input side connection port 13 Gas stopper 13a Knob 13b Lock mechanism 15 Flange 16 Screw 17 Flange 19 Enter Side member (elbow) 21 Falling pipe 21a Union part 21b Circumferential groove 22 Gas meter inlet side connection part 23 Union nut 23a Stop ring engagement part 23b Female screw 25 Gas meter inlet 25a Male screw 27 Gas meter outlet 29 Union nut 30 Gas meter outlet side connection part 31 Falling pipe 33 Exit side member (elbow) 35 Test port 35a Test port (plug) 37 Upper connection port 39 Lower connection port 41 Fixing bracket 43 Cover hook top 45 Wall fixing part 46 Screw 47 Leg 49 Mounting part 50 Screw 51 Leg 52 Screw 53 Wall fixing part 55 Cover Lower hook 61 Upper nail 63 Opening 65 Upper surface 66 Left side 67 Front 68 Right side 69 Test cover 71 Lower surface 73 Lower nail 81 Groove 83 Lid mounting part 84 Lid 85 Sealing projection 85a Hole 87 Gas stopper operation hole 91 Stop ring 93 Packing 120 Pi member 122 Cross member 121, 131 Leg 281 Inlet side connecting pipe 291 Outlet side connecting pipe 297 Piping support

Claims (3)

A gas meter suspension unit for installing a gas meter and its inlet / outlet piping on a building wall;
A transverse member extending in the transverse direction, and a π-shaped basic member (π-shaped member) comprising leg members depending on the lower left and lower right of the transverse member;
A fixing bracket for fixing the π-shaped member to a building wall or the like;
Between the left and right end portions of the cross member of the π-shaped member and the leg portions near the end portions, there are formed communication paths that open to the end portions and the end surfaces of the leg portions. The communication paths are isolated from each other,
A gas stopper is connected to one end of the cross member, and a test port is connected to the other end,
A gas meter inlet connection joint is connected to the lower end of the leg near the gas stopper, and a gas meter outlet connection joint is connected to the lower end of the leg near the test port .
A gas meter suspension unit characterized in that the gas flow path is deflected 90 degrees upward from the inside in the gas stopper . Gas meter hanger unit according to claim 1, wherein said test port is formed integrally with one end of the transverse member. The gas meter suspension unit according to claim 1 or 2 , wherein the gas meter inlet / outlet connection joint includes a union, and the union has a snap ring type stop ring for preventing the union nut from falling off.

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