JPH07243555A - Valve with built-in filter - Google Patents

Abstract

PURPOSE:To provide a valve equipped with built-in filter, which excels in the easiness to perform the installing works and maintenance works and can be constructed in small size at a low cost. CONSTITUTION:A valve 10 of ball valve type to be installed in a pipeline includes a filter 11, closing element 12, and repair opening 15. The filter. 11 formed in flange shape from a wire meshing is installed removably in the closing element 12. When a flow path is put in continuity by the closing element 12, the filter 11 is separated from the flow path and taken out through a repair, opening 15. Because shutting of the pipeline and mounting/removal of the filter 11 in the flow path can be made simultaneously by one-step operation, the mounting/removing operations are facilitated at the time of filter repairing etc.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve for sealing a pipeline which is interposed in a gas supply pipeline such as a city gas supply pipeline and has a filter for removing impurities floating in the flow channel.

[0002]

2. Description of the Related Art Conventionally, a filter is provided in a city gas supply line. The filter is provided to remove impurities floating in the flow channel. In particular, a filter is often provided near the governor provided in the flow path.

FIG. 4 shows the configuration of a filter 1 and a governor 2 system of the prior art. The governor 2 is used to regulate the primary pressure of a fluid such as a gas supplied from the upstream side pipeline 3 to a lower secondary pressure and supply it to the downstream side pipeline 4. On the other hand, impurities such as dust may be suspended in the flow channel. If the impurities floating in the flow path of the upstream pipe line 3 are clogged with the governor 2, the pressure regulating function of the governor 2 may be deteriorated,
It may cause a failure. Therefore, the filter 1 is provided in the upstream pipe line 3 near the governor 2. The filter 1 has an upstream pipe line 3
The floating impurities are removed to maintain the governor 2's suppression function.

When impurities are collected in the filter 1, the filtering function of the filter 1 for removing impurities in the fluid deteriorates.
Periodic inspection or repair is required. for that reason,
As in the case of the governor 2, after closing the inlet valve 5 and the outlet valve 6 to block the flow passage, the filter 1 is taken out from the pipeline.

[0005]

In the above conventional filter 1, the inlet valve 5, the filter 1, and the outlet valve 6 are provided.
Is a separate device, the space occupied by the system including the filter 1, the inlet valve 5, and the outlet valve 6 becomes large, and the piping becomes complicated. Therefore, it is difficult to install in a narrow place and the cost is high. Further, at the time of periodic inspection of the filter 1, it is necessary to perform the operation of closing the inlet valve 5 and the outlet valve 6 and then the operation of taking out the filter 1 provided in the pipeline. Workability during management is poor.

An object of the present invention is to provide a small-sized and low-cost filter built-in valve which is excellent in installation and maintenance.

[0007]

DISCLOSURE OF THE INVENTION The present invention relates to a valve having a closure for connecting or blocking a flow path of a fluid, which is housed in the closure and is inserted into the flow path when the flow path is connected. A filter built-in valve including a filter that is separated from a flow channel when the flow channel is blocked, and provided with a repair opening to which the filter can be detached from the outside when the flow channel is blocked.

[0008]

According to the present invention, the valve is provided with a closure and a repair opening, and the filter is incorporated in the closure of the valve. The valve is arranged in the middle of the pipeline. The valve closure is provided for connecting or blocking the flow path of the fluid flowing in the pipe. The filter is provided to filter and remove impurities floating in the flow path. When the flow path is conducted by the closure, the filter is
It is inserted in the flow path. When the flow path is blocked by the closure, the filter is separated from the flow path. The filter is attachable / detachable within the closure. When the flow path is blocked and the filter is separated from the flow path, the repair opening in the valve is opened. The filter is detached from the outside through the repair opening, and is inspected or repaired.

Since the blocking of the pipeline and the attachment / detachment of the filter to / from the flow path are simultaneously performed in one step operation, the attachment / detachment operation at the time of repairing the filter becomes easy. Further, since the filter is built in the valve closure, the space occupied by the system including the valve and the filter is reduced to maintain the filter, compared with the case where the valve closure and the filter are separately provided in the pipeline. The place to be managed can be reduced, and the maintainability of the filter can be improved.

[0010]

1 is a sectional view showing the structure of a valve 10 according to an embodiment of the present invention. The valve 10 is a filter 11
And a closure 12 and a repair opening 15. The closure 12 provided in the valve 10 of the present invention is called a ball valve because it has a substantially spherical shape.
A valve port 16 is provided at the center of the ball valve type closure 12. When the handle provided in the direction perpendicular to the paper surface with respect to the closure 12 is rotated and the central axis T of the upstream pipe line 13 and the downstream pipe line 14 coincides with the central axis line of the valve port 16, the pipe line It is conducted. This state is shown in FIG.
When the central axis line T of the upstream side conduit line 13 and the downstream side conduit line 14 and the central axis line of the valve port 16 become vertical, the conduit lines are closed. When the pipeline is closed, grease is filled in the gaps 17a and 17b between the closure 12 and the upstream pipeline 13 and between the closure 12 and the downstream pipeline 14 in order to maintain the sealing function.

It should be noted that the filter 11 is built in the ball valve type closure 12. Filter 11
Is formed in a shape having a flange, and is made by using a stainless steel wire mesh of about 400 mesh. Child 1
According to 2, when the flow path is conducted, the filter 11 is in the state of being inserted into the flow path. Impurities in the fluid floating from the upstream pipe 13 are filtered by the wire mesh on the bottom surface 18 of the filter 11. The purified gas is supplied to the downstream pipe line 14.

The closure 12 is provided with guide pieces 19a and 19b. The guide piece 19a corresponds to the upstream pipe line 1 in FIG.
The guide piece 19b is provided in the closure 12 corresponding to the clearance 17a between the 3 and the closure 12, and the guide piece 19b is provided in the closure 12 corresponding to the clearance 17b between the downstream pipe line 14 and the closure 12. A protrusion 20 is provided on the guide piece 19a. Filter 1
When 1 is stored in the closure 12, the flange 11 a of the filter 11 is supported by the protrusion 20. Thus filter 1
1 by the guide pieces 19a, 19b and the protrusion 20
It is held in the closure 12 without rattling and prevents movement.

When the flow path is blocked by the closure 12,
The filter 11 is separated from the flow path. The filter 11 is
It can be detached from the inside of the closure 12 through the repair opening 15. The repair opening 15 is provided in a direction perpendicular to the axis T of the pipeline, and the pipeline and the repair opening 15 are T
It is formed in a letter shape. When the upstream pipe line 13 and the downstream pipe line 14 circulate, the repair opening 15 is sealed by the lid 21. This is to prevent the gas in the flow path from leaking from the repair opening 15 to the outside. The sealing is performed by penetrating the screw member 22 into a screw hole provided in the lid body 21. The closure 12 is rotated to seal the upstream pipe line 13 and the downstream pipe line 14 and open the lid 21 of the repair opening 15. After that, the filter 11 is taken out. The taken out filter 11 is regularly inspected or repaired.

FIG. 2 is a perspective view of the filter 11 incorporated in the valve 10 of the present invention. In this embodiment, the entire filter 11 is made using a wire mesh such as stainless steel wire,
It is formed in a flange type. In the filter 11 of the present embodiment, the bottom surface on the side having the brim 11a has a bottom surface to serve as the filter 11, but the surface without the brim 11a may have a bottom surface. Further, in this embodiment,
Although the entire filter 11 is formed of wire mesh, only the bottom surface of the filter 11 may be formed of wire mesh.

FIG. 3 is a sectional view showing a schematic structure of a valve 30 according to another embodiment of the present invention. Although the closure 12 is formed in the ball valve type in the above embodiment, the closure 3 is used in this embodiment.
2 is formed into a cock valve type. The cock valve type is one in which the closure 32 is formed in a substantially conical shape. The closure 32 is provided with a valve opening 36 having a substantially quadrangular cross section corresponding to a substantially conical shape. The handle 33 causes the closure 32 to rotate, and when the axis T of the conduit and the axis P of the valve port 36 become vertical, the upstream conduit 13 and the downstream conduit 14 are closed. Figure 3
Indicates the closed state of the pipeline. As in the previous embodiment, the filter 11 is built into the closure 32. Filter 11
Is made of metal mesh such as stainless steel wire in a substantially cylindrical shape that matches the cross-sectional shape of the valve port 36. At least one bottom surface of the filter 11 formed in a substantially cylindrical shape is formed as a bottom surface.

The valve 30 is provided with a repair opening in a direction perpendicular to the plane of the drawing. When the pipe line is closed from the opening for repair in the same manner as in the above-described embodiment, the filter 11 is closed.
Is detachably accommodated in the closure 32.

Since the filters 11 and 31 are built in the closures 12 and 32 of the valves 10 and 30, the space occupied by the system including the valves 10 and 30 and the filters 11 and 31 can be reduced. Therefore, the installability in a narrow place in the pipeline is improved, and the cost can be reduced as compared with the case where the valves 10 and 30 and the filters 11 and 31 are provided separately. Closing 1 of valves 10 and 30
2, 32 seals the pipe line and at the same time closes 1
Since the filters 11 and 31 built into the filters 2 and 32 can be removed, the filters 11 and 31 can be easily and quickly operated at the time of periodic inspection or repair. It is possible to improve the maintainability of the gas supply pipe provided.

[0018]

As described above, according to the present invention, the filter can be attached and detached when the pipe is closed due to the closing of the valve. Therefore, when the filter is inspected or repaired,
The attachment / detachment operation of the filter can be performed easily and quickly. Furthermore, since the occupied area of the system including the valve and the filter can be reduced as compared with the case where the valve closure and the filter are separately provided in the pipeline, it is possible to reduce the size and cost and to reduce the cost in the pipeline. In the above, it is possible to improve the installability in a narrow place and to improve the maintenance ability of the filter.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a configuration of a valve 10 according to an embodiment of the present invention.

FIG. 2 is a filter 11 incorporated in the valve 10 of the present invention.
FIG.

FIG. 3 is a sectional view showing a schematic structure of a valve 30 according to another embodiment of the present invention.

FIG. 4 is a diagram showing a configuration of a filter 1 and a governor 2 system of a conventional technique.

[Explanation of symbols]

 10,30 Valve 11,31 Filter 11a Collar 12,32 Closure 13 Upstream side pipeline 14 Downstream side pipeline 15 Repair opening 16,36 Valve opening 17a, 17b Gap 18 Bottom surface 19a, 19b Guide piece 20 Projection 21 Lid 22 Screw member 33 Handle

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display area F16L 55/00

Claims (1)

[Claims] 1. A valve having a closure for connecting or blocking a flow path of a fluid, the valve being housed in the closure, inserted into the flow path when the flow path is connected, and separated from the flow path when the flow path is blocked. A valve with a built-in filter, characterized in that it includes a filter, and is provided with a repair opening that allows the filter to be detached from the outside when the flow path is blocked.