WO2005064304A1

WO2005064304A1 - Block for gas piping, gas piping using the block, and gas opening/closing part used for the gas piping

Info

Publication number: WO2005064304A1
Application number: PCT/JP2003/016661
Authority: WO
Inventors: Tadahiro Yoshida
Original assignee: Mitsubishi Denki Kabushiki Kaisha
Priority date: 2003-12-25
Filing date: 2003-12-25
Publication date: 2005-07-14
Also published as: JPWO2005064304A1; TW200521367A; TWI252287B; CN1771432A; JP4566131B2

Abstract

A block for gas piping and a gas piping using the block, the block wherein a pressure gauge mounting part (2) for mounting a gas pressure gauge (9), a gas supply/exhaust part (3) for performing the supply and exhaust of gas from the outside, a storage space (6) allowing a valve stem (12) to be inserted therein and having an adapter mounting part (4) for mounting an adapter (11) with a pipe connection function, and a working hole (7) having a communication passage allowed to communicate with the storage space and allowing a handle for operating the valve stem (12) inserted into the storage space to be inserted therein from the outside are provided on the outer surfaces of the block at different positions, and a gas passage (5) allowing the pressure gauge mounting part, the gas supply/exhaust part, and storage space to communicate with each other is formed in the block, whereby, since the opening/closing and supply/exhaust functions necessary for the gas piping are collected in one part, the outside dimensions and the cost of the block can be reduced.

Description

Description Block for gas piping, gas piping using this block, and gas switching parts used for the gas piping

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas pipe used for evacuating and sealing a gas-tight container and monitoring the internal pressure of the container using a pressure gauge. Background art

An example of a conventional gas pipe related to the present invention is disclosed in, for example, Japanese Patent Application Laid-Open No. Hei 5-33636.

In general, a conventional gas pipe is configured by fastening a commercially available on-off valve or an adapter having a supply / exhaust section with a pressure gauge, a packing, a nut, a pipe, or the like.

In such a gas pipe, since the configuration and size of the pipe are determined by the opening and closing pulp and the adapter, it has been difficult to reduce the external dimensions. Also, since many components need to be assembled, a long assembly time was required.

The present invention solves the above-described problems, and consolidates the functions of opening and closing and air supply and exhaust, which are necessary functions in a gas pipe, into one part, thereby reducing external dimensions and cost. An object of the present invention is to provide a gas pipe block and a gas pipe using the block, which are made possible.

It is another object of the present invention to provide a gas switching component suitable for the gas pipe of the present invention. Disclosure of the invention

The gas pipe block according to the present invention may include a pressure gauge mounting portion for mounting a gas pressure gauge, a gas supply / exhaust portion for supplying / exhausting gas from outside, and a gas switching component at different positions on the outer surface. And a working hole for inserting a handle for operating a gas opening / closing part which has a communication passage communicating with the storage space and which is externally inserted into the storage space. A gas passage communicating with the pressure gauge mounting portion, the air supply / exhaust portion, and the storage space is formed in the inside. Further, the gas switching part of the present invention is a valve stem used together with the gas piping block of the present invention, and comprises a cylindrical first cylindrical body and a concentric circle with the first cylindrical body. A second cylindrical body having a radius larger than the radius of the first cylindrical body and connected to the first cylindrical body, and a packing on the outer peripheral surface of the first cylindrical body. And a threaded part for screwing and screwing into the threaded part formed in the work hole of the piping block to rotate and slide. It is configured.

Another gas opening / closing part according to the present invention is a ball valve used together with the gas pipe block according to the present invention, wherein the whole is formed into a spherical shape, has a through hole in the center, and has a spherical side surface. It is configured to have a groove to be fitted with a turning operation handle.

Further, in the gas pipe of the present invention, a pressure gauge mounting portion for mounting a gas pressure gauge, a gas supply / exhaust portion for supplying / exhausting gas from outside, and a gas opening / closing part may be inserted at different positions on the outer surface. A storage space provided with an adapter mounting portion for mounting an adapter having a pipe connection function, and a communication passage communicating with the storage space, for opening and closing gas which is externally inserted into the storage space. A work hole for inserting a handle for operating the part is provided. Inside the pressure gauge mounting part, a supply / exhaust part, A gas pipe block in which a gas passage communicating with the storage space is formed, a gas opening / closing part that is inserted into the storage space and opens and closes the gas passage, and a pressure attached to the pressure gauge mounting portion. And an adapter having a pipe connection function mounted on the adapter mounting section, and a pipe mounted on the pipe connection section of the adapter.

According to the present invention, the functions of opening and closing the ventilation section and the functions of supplying and exhausting gas to and from the gas-tight container, which are functions necessary for the gas pipe, can be integrated into one component, so that the outer dimensions of the gas pipe can be reduced. it can.

In addition, since the components are reduced in size and simplified, they can be manufactured by general machining and cost can be reduced. Brief Description of Drawings

FIG. 1 is a configuration diagram of a gas pipe according to Embodiment 1 of the present invention. FIG. 2 is a configuration diagram of a gas pipe block according to Embodiment 1 of the present invention.

FIG. 3 is a front view, a rear view, and a side sectional view of the valve stem according to Embodiment 1 of the present invention.

FIG. 4 is a perspective view of the valve stem according to Embodiment 1 of the present invention. FIG. 5 is a partially enlarged view of a valve stem according to Embodiment 1 of the present invention. FIG. 6 is a configuration diagram of a gas pipe according to Embodiment 2 of the present invention, and shows a state in which a gas passage is closed.

FIG. 7 is a diagram showing a main part of a gas pipe according to Embodiment 2 of the present invention, and is a diagram showing a gas passage in an open state.

FIG. 8 is a perspective view showing an example of a ball valve according to Embodiment 2 of the present invention.

FIG. 9 is a perspective view showing an example of a spacer according to Embodiment 2 of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

Embodiment 1

FIGS. 1 to 5 show a gas pipe, a block for gas pipes, and a gas switching part according to Embodiment 1 of the present invention. In the drawings, the same reference numerals indicate the same or corresponding parts.

FIG. 1 shows the overall configuration of a gas pipe according to Embodiment 1 of the present invention. FIG. 1 (a) is a front view, and FIG. 1 (b) is a sectional view of FIG. 1 (a). It is a side sectional view in the A line.

In FIG. 1, a pressure gauge 9 is connected to a pressure gauge mounting portion 2 of a gas pipe block 1 (the details of the gas pipe block will be described later with reference to FIG. 2) via a nut 10. I have. An adapter 11 for connecting the gas pipe block 1 and a pipe (not shown) is connected to the adapter mounting portion 4 of the gas pipe block 1. The pipe connection 18 of the adapter 11 is connected to a pipe (not shown) connected to a gas-tight container (for example, a tank, not shown).

In the storage space 6 of the block 1 for gas piping, a valve stem 12 as a gas opening / closing part having a packing 13 disposed in a groove is inserted. (The details of this valve stem will be described later with reference to FIGS. 3 to 5.)

When a handle (not shown) is inserted through the work hole 7 of the piping block 1 and the end of the handle is fitted to the flat portion of the valve stem 12, the valve stem 12 can be rotated.

At this time, the valve rod 12 slides in the axial direction by the screw portion 8 inside the gas pipe block 1, and the through hole 5 as the gas passage can be closed and opened. That is, when the outer circumference of the end face 17 of the valve stem comes into contact with the bottom surface of the storage space 6, the through hole 5 is closed at the contact surface. (Fig. 1 shows the through hole 5 closed.) Next, the gas pipe block 1 used for the above-described gas pipe will be described in detail.

FIG. 2 is a configuration diagram of a block for a gas pipe. FIG. 2 (a) is a front view, and FIG. 2 (b) is a side sectional view taken along line AA of FIG. 2 (a).

In FIG. 2, a gas piping block 1 is made of, for example, a metal cube such as brass or aluminum, and has a pressure gauge mounting portion 2 for mounting a pressure gauge on each outer surface and an externally mounted pressure gauge mounting portion. A supply / exhaust section 3 for supplying / exhausting gas is provided, and a storage space 6 in which a valve stem as a gas opening / closing part can be inserted.

A through hole 5 is formed inside the cube to form a gas passage by connecting the pressure gauge mounting section 2, the air supply / exhaust section 3, and the storage space 6.

A work hole 7 for inserting a handle (not shown) for operating the valve stem 12 is provided on a side of the cube facing the storage space 6. The work hole 7 is provided in the storage space 6. It has a communication passage that penetrates to the storage space and communicates linearly with the cable.

Further, the storage space 6 is provided with an adapter mounting portion 4 for mounting an adapter 11 having a function of connecting piping.

Next, a valve stem which is a gas opening / closing component used together with the above-described gas piping block 1 will be described.

Fig. 3 shows a valve stem according to the first embodiment of the present invention. Fig. 3 (a) is a front view, Fig. 3 (c) is a rear view, and Fig. 3 (b) is a third view. FIG. 3 is a side sectional view taken along line AA in FIG.

FIG. 4 is a perspective view of the valve stem, and FIG. 5 is a partially enlarged view of a portion X in FIG. 3 (b).

In FIGS. 3 and 4, the valve stem 12 has a cylindrical first cylindrical body 12 A and a concentric circle with the first cylindrical body 12 A. Than the radius of And a second cylindrical body 12B having a large radius and connected to the first cylindrical body.

On the curved side surface of the first cylindrical body 12 A of the valve stem 12, a groove 14 for inserting the packing 13 and a screw portion 15 for rotating and sliding are formed. ing. Further, as shown in FIG. 5, the end surface of the second cylindrical body 1 2B is formed at a portion where the first cylindrical body 12A and the second cylindrical body 12B having different radii are connected. 7 is configured such that the angle formed by the center axis of the valve stem is smaller than a right angle by α °, that is, an acute angle.

Further, both ends of the valve stem 12 are cut so as to have a width across flats 16 respectively. One of the two flat portions 16 A is used to fit a handle for rotating the valve stem 12. The other width across flats, 16 mm, is used to secure the ventilation without blocking the through hole 5 when the valve stem 12 slides inside the gas piping block 1 and comes into contact with the adapter 11. Is provided.

As described above, according to the gas piping of the first embodiment of the present invention, the gas piping block 1 has the functions of opening and closing the ventilation section and supplying and exhausting gas to and from the gas-tight container. Can be reduced compared to conventional gas piping.

Further, the gas piping block, valve stem and adapter, which constitute the gas piping, all have a small external shape and can be manufactured by general machining, so that the cost can be reduced.

Furthermore, as the number of parts is reduced, assembling time can be shortened, so that assembling costs can also be reduced.

Embodiment 2

FIGS. 6 to 9 show a gas pipe, a gas pipe block, and gas switching parts according to Embodiment 2 of the present invention. In the figures, the same reference numerals as those in FIG. Since the corresponding parts are shown, detailed description is omitted.

In the gas pipe according to the second embodiment of the present invention, the storage space 6 of the gas pipe block 1 is provided at a position different from that of the first embodiment. It is configured to use a ball valve as a closing part.

As shown in FIG. 8, the pole valve 19 used in the second embodiment is made of a metal (for example, brass or aluminum), is formed into a substantially spherical shape, and has a through hole 2 serving as a gas passage in the center. 2 and a groove 21 parallel to the through hole 22.

The storage space 6 for the gas pipe block 1 is provided on the side (the lower surface in the figure) where the direction of entry of the pole vanoleb intersects the communication path of the work hole 7.

That is, as shown in FIG. 6, the gas pipe of the second embodiment has a substantially spherical pole valve 19 in the storage space 6 of the gas pipe block 1 and a groove 21 provided in the side face. Inserted to work hole 7.

As shown in FIG. 9, the ball valve 19 is formed by molding a resin (for example, Teflon) into a cylindrical shape, and by using a spacer 20 having a chamfered inside of one end surface, the storage space 6 is formed. It is arranged so as to sandwich it in the depth direction. Then, an adapter 11 having a function of connecting a pipe is attached to the adapter attaching section 4, a pressure gauge 9 is attached to the pressure gauge attaching section 2, and a pipe is connected to the pipe connecting section 18 of the adapter 11 (not shown). Is installed.

Lubricating oil is applied between the ball valve 19 and the spacer 20. A handle (not shown) is inserted through the work hole 7 of the gas piping block 1, and the tip of the handle is attached to the ball. When fitted into the groove 21 of the valve 19, the ball valve 19 can be rotated. At this time, when the through hole 22 of the pole valve 19 becomes almost perpendicular to the through hole 5 inside the gas pipe block 1, the through hole 22 is closed (the state shown in Fig. 6). Hole 5 is opened (state in Fig. 7).

As described above, according to the gas pipe of the second embodiment of the present invention, as in the first embodiment, the functions of opening and closing the ventilation section and supplying and exhausting gas to and from the gas-tight container are integrated in the gas pipe block 1. To reduce the outer shape compared to conventional gas piping. Can. '

In addition, the gas piping blocks, adapters, ball valves, spacers, etc. that make up the gas piping are all small in size and can be manufactured by general machining, thereby reducing costs.

Furthermore, as the number of parts is reduced, assembling time can be shortened, so that assembling costs can also be reduced. Industrial applicability

INDUSTRIAL APPLICABILITY The present invention can be used for gas piping in general, such as a gas insulated switchgear, and is highly applicable.

Claims

The scope of the claims

1. Attach gas pressure gauges at different positions on the outer surface

, A gas supply / exhaust unit for supplying / exhausting gas from outside, a storage space in which a gas opening / closing part can be inserted, and an adapter mounting part for mounting an adapter having a pipe connection function is provided. And a working hole for inserting a handle for operating a gas opening / closing component inserted into the storage space from outside having a communication passage communicating with the storage space. A gas pipe block in which a gas passage communicating with a pressure gauge mounting portion, a supply / exhaust portion, and a storage space is formed.

2. The working hole and the storage space are configured to communicate linearly with each other, and the screw part for rotating and sliding the valve stem as a gas opening / closing part inserted into the storage space is connected to the working hole. 2. The block for gas piping according to claim 1, wherein the block is formed in the communication passage.

3. A valve stem as a gas opening / closing part used together with the gas pipe block according to claim 2, wherein a first cylindrical body and a concentric circle with the first cylindrical body are formed. None, a second cylindrical body having a radius larger than the radius of the first cylindrical body and connected to the first cylindrical body, and a packing is provided on an outer peripheral surface of the first cylindrical body. And a threaded portion for screwing and rotating with the threaded portion formed in the work hole of the piping block. The both end faces of the valve stem have a width across flats. Gas opening / closing part characterized by being performed

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4. The angle formed by the end surface of the second cylindrical body with respect to the center axis of the valve stem at the portion where the first cylindrical body and the second cylindrical body are connected to each other is an acute angle. 4. The gas opening / closing component according to claim 3, wherein:

5. The storage space and the working hole are formed so that the gas opening / closing part insertion direction of the storage space intersects with the communication passage of the working hole. 2. The block for gas piping according to claim 1, wherein a pole pulp is provided as a closing part.

6. A ball pulp as a gas opening / closing part used together with the gas pipe block according to claim 5, wherein the whole is formed into a spherical shape, has a through hole at the center, and has a spherical side surface for turning. A gas opening / closing part having a groove for fitting with an operation handle.

7. A pressure gauge mounting part for mounting a gas pressure gauge at different positions on the outer surface, a supply / exhaust part for supplying / exhausting gas from outside, and a gas opening / closing part can be inserted. A storage space provided with an adapter mounting portion for mounting an adapter having a communication passage, and a handle for operating a gas opening / closing component externally inserted into the storage space having a communication passage communicating with the storage space. A gas pipe block formed with a gas passage communicating with the pressure gauge mounting portion, the air supply / exhaust portion, and the storage space. A gas opening / closing part that is inserted into the storage space to open and close the gas passage, a pressure gauge attached to the pressure gauge attachment part, and a pipe connection machine attached to the adapter attachment part Gas pipe with an adapter, a tubing, attached to the pipe connection portion of the adapter having a.

8. The gas pipe according to claim 7, wherein the working hole and the storage space are configured to communicate with each other in a straight line, and the communication passage of the working hole includes a gas opening / closing part inserted into the storage space. A thread portion for rotating and sliding the valve stem is formed, and the valve stem as the gas opening / closing part has a cylindrical first cylindrical body and a concentric circle with the first cylindrical body. A second tubular body having a radius larger than the radius of the first tubular body and connected to the first tubular body, and a packing is provided on the outer peripheral surface of the first tubular body. A groove to be inserted, a screw portion that is screwed with a screw portion formed in the working hole to be rotated and slid, are formed, and both end surfaces of the valve stem are configured to have a width across flats. Gas piping.

9. The gas pipe according to claim 7, wherein a storage space and a work hole are formed so that a direction of insertion of the gas opening / closing part of the storage space and a communication path of the working hole intersect with each other. Is a pole valve, which is formed in a spherical shape in its entirety, has a through hole in the center, and has a groove on the spherical side surface to be fitted with an operation handle for rotation. A gas pipe characterized by being arranged so as to face.