JP3049631B2 - Valve device for double structure pipeline - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a valve device for a double-structure pipe mounted on a double-structure pipe.

[0002]

2. Description of the Related Art Conventionally, in a circulation line or the like which integrally uses a double-structured pipe composed of an outer pipe and an inner pipe and integrally forms an outward path and a return path, a double-structured pipe is used for controlling a fluid. A valve device is provided in each of the inner flow path and the outer flow path. For this reason, as shown in FIG. 8, the valve device 32 interposed in the middle of the pipe 31 having a double structure includes a large-diameter valve box 33 communicating with an outer pipe 31 a forming an outer flow path of the pipe 31, And a small-diameter valve box 34 communicating with an inner pipe 31b forming an inner flow path of the small-diameter 31. A part of the small-diameter valve box 34 penetrates the large-diameter valve box 33 and is exposed to the outside. The large-diameter valve box 33 is provided with a large-diameter valve body 35 for controlling the fluid flowing through the outer flow path.
Is provided with a small-diameter valve element 36 for controlling the fluid flowing through the inner flow path.

[0003]

However, according to the above-mentioned conventional structure, the small-diameter valve box 34 forming the inner flow path in the valve device 32 is exposed outside the large-diameter valve box 33 forming the outer flow path. Large diameter valve box 3
The cross section of the flow path in 3 repeatedly increases and decreases along the flow direction, and the pressure loss increases. In addition, the outer shape is complicated, and there is a problem that handling the valve device 32 in the installation work requires time and effort.

The present invention solves the above-mentioned problems, and
An object of the present invention is to provide a valve device for a double-structure pipe line which maintains a double structure in a valve box to ensure a smooth flow of a fluid and simplify the outer shape to facilitate handling.

[0005]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a valve device for a double-structure pipe according to the present invention is a valve device connected to a double-structure pipe consisting of an inner pipe and an outer pipe. A main body portion enclosing the valve body, and a pair of end body portions located on both sides of the main body portion and forming a connection portion with respect to the dual structure pipe line, wherein the end body portion has a double structure pipe The end barrel outer cylinder connected to the outer pipe forming the outer flow path of the road, the end barrel inner cylinder connected to the inner pipe forming the inner flow path of the dual structure pipe, and the outer flow path in the end barrel outer cylinder A guide plate that deflects to both side regions separated by the end trunk inner cylinder on the main trunk side, the main trunk is connected to the end trunk outer cylinder of the end trunk, and the main trunk outer cylinder connected to the end trunk outer cylinder. A main body inner cylinder connected to the end body inner cylinder; and a partition plate that forms an outer flow path in both sides of the main body outer cylinder that separates the main body inner cylinder. Arrange the inner valve body that opens and closes the road A pair of outer valve bodies for opening and closing the outer flow path are arranged in the both side regions of the main body outer cylinder, and the inner valve body and the outer valve body are fixed to a valve rod radially penetrating the main body. Things.

[0006] Further, the valve device for a double-structured pipe of the present invention comprises:
A pair of valve stems are provided penetrating the body in the radial direction, an inner valve body is fixed to one valve stem, and an outer valve body is fixed to the other valve stem.

[0007]

With the above arrangement, when the flow of the inner fluid flowing through the inner pipe of the pipeline and the flow of the outer fluid flowing through the outer pipe of the pipeline are controlled, the inner valve body and the outer valve body are opened and closed by the valve rod.

[0008] When the inner valve body and the outer valve body are located at an appropriate opening degree, the inner fluid flowing through the inner pipe of the pipe passes through the end barrel inner cylinder of one end barrel, and the book body of the main barrel. It flows into the barrel inner cylinder, flows out from the main barrel inner barrel to the end barrel inner barrel on the other side of the end barrel, and flows out from the end barrel inner barrel to the inner pipe of the pipeline.

After the outer fluid flowing through the outer pipe of the conduit flows into the end barrel outer cylinder of the other end barrel, the outer fluid is guided by the guide plate in the end barrel outer cylinder, and the both sides of the end barrel inner cylinder are separated from each other. The air flow is deflected to the region and becomes a two-hand flow, and flows from the end barrel outer cylinder of the end barrel into the outer flow path formed in the main barrel outer cylinder of the main barrel. Then, from the outer flow path of the main body outer cylinder, the one-side end body part flows into the end body outer cylinder, and is guided by the guide plate in the end body outer cylinder, and surrounds the entire circumference of the end body inner cylinder. It flows and flows out from the end barrel outer tube to the outer tube of the pipeline.

Therefore, since the inner flow path through which the inner fluid flows does not cross the outer flow path through which the outer fluid flows, the inner fluid and the outer fluid flow smoothly without obstruction of the flow other than the valve body, and the pressure loss Can be suppressed. Further, since the end barrel inner cylinder and the main body inner cylinder are not exposed to the outside and the end barrel outer cylinder and the main body outer cylinder form the outer shape of the valve device, the handling of the valve device is easy.

[0011]

An embodiment of the present invention will be described below with reference to the drawings. 1 to 4, a valve device 1 is used in a double-structure pipe including an inner pipe and an outer pipe.
The main body 2 includes a valve body, and a pair of end bodies 3 that are located on both sides of the main body 2 and that are connected to a double-structure pipe.

The end barrel 3 has an end barrel outer cylinder 4 connected to an outer pipe forming an outer flow path of the dual structure pipe, and an end body connected to an inner pipe forming an inner flow path of the double structure pipe. And an inner cylinder 5. The end barrel outer cylinder 4 has a tapered shape, and the opening facing the main body 2 has a larger diameter than the opening on one side facing the outer pipe of the pipeline.

A guide between the end barrel outer cylinder 4 and the end barrel inner cylinder 5 for deflecting the outer flow path in the end barrel outer cylinder 4 to both side regions on the main body 2 side separated by the end barrel inner cylinder 5. A plate 6 is provided. The guide plate 6 has a shape that widens in a wedge shape from an opening on one side of the end barrel outer cylinder 4 toward an opening on the other side. Flanges 7 and 8 for connection are provided on both ends of the opening of the end barrel outer cylinder 4 of the end barrel portion 3.

The main body 2 has a main body outer cylinder 9 connected to the end body outer cylinder 4 of the end body 3 and a main body inner cylinder 10 connected to the end body inner cylinder 5 of the end body 3. doing. Main body outer cylinder 9 and main body inner cylinder 10
A partition plate 11 that forms an outer flow path is provided between both sides 9a, 9a of the main body inner cylinder 9 therebetween.

An inner valve body 12 for opening and closing an inner passage is disposed inside the main body inner cylinder 10, and both side regions 9 a and 9 of the main body outer cylinder 9 are provided.
A pair of outer valve bodies 13 for opening and closing the outer flow path are disposed in the inner valve body 14, and a valve rod 14 radially penetrating the main body outer cylinder 9 and the main body inner cylinder 10 of the main body 2. 12 and outer valve body 13
Is fixed. The seat 15 is fixed to the peripheral edges of the inner valve body 12 and the outer valve body 13 with fixing bolts 17 via a sheet retainer 16.

The main body portion 2 is sandwiched between the end body portions 3 by pulling the end body portions 3 together by bolts 18 spanned between the flanges 8 of the both end body portions 3. I have. Hereinafter, the operation of the above configuration will be described. When controlling the flow of the inner fluid I flowing through the inner pipe of the pipeline and the flow of the outer fluid O flowing through the outer pipe of the pipeline, the valve rod 14 is driven to move the inner valve body 12 and the outer valve body 13 respectively into the main body. Cylinder 10
Further, the main body outer cylinder 9 is opened and closed in both side regions 9a, 9a.

In a state where the inner valve body 12 and the outer valve body 13 are located at an appropriate opening degree, the inner fluid I flowing through the inner pipe of the pipe passes through the end barrel inner cylinder 5 of the one end barrel 3. Main body 2
Flows into the main body inner cylinder 10. Further, the inner fluid I flows from the main body inner cylinder 10 to the end body inner cylinder 5 of the other end body part 3 and flows out from the end body inner cylinder 5 to the inner pipe of the pipeline.

After the outer fluid O flowing through the outer pipe of the conduit flows into the end barrel outer cylinder 4 of the other end barrel 3, it is guided by the guide plate 6 in the end barrel outer cylinder 4 to be guided into the end barrel. The flow is deflected to both side regions separated by the cylinder 5, and the flow is divided into two parts. Further, the outer fluid O flows from the end barrel outer cylinder 4 of the end barrel 3 to an outer flow path formed in the main barrel outer cylinder 9 of the main trunk 2.

Then, it flows from the outer flow path of the main body outer cylinder 9 into the end body outer cylinder 4 of the other end body 3, and is guided by the guide plate 6 in the end body outer cylinder 4, so that the inner body 4 One flow surrounds the entire circumference of the cylinder 5 and flows out from the end barrel outer cylinder 4 to the outer pipe of the pipeline.

Therefore, the inner flow path in which the inner fluid I flows does not cross the outer flow path in which the outer fluid O flows, so that the inner fluid I and the outer fluid O smoothly flow without being obstructed except for the valve body. Flow and pressure drop can be suppressed. Further, the end barrel inner cylinder 5 and the main body inner cylinder 10
Are not exposed to the outside, and the end barrel outer cylinder 4 and the main barrel outer cylinder 9 form the outer shape of the valve device 1, so that the valve device 1 is easy to handle.

FIGS. 6 and 7 show another embodiment of the present invention. Members having the same functions as those of the previous embodiment are denoted by the same reference numerals and their description is omitted. In this configuration, the main body 21 is formed to be long in the axial direction, and a pair of valve rods 22 and 23 are provided at different positions in the axial direction to penetrate the main body 21 in the radial direction. The inner valve body 12 is fixed to the rod 22, and the pair of outer valve bodies 13 is fixed to the other valve rod 23.

According to this configuration, the control of the inner fluid I and the outer fluid O can be separately performed. Other functions and effects are the same as those of the previous embodiment.

[0023]

As described above, according to the present invention, the inner flow path through which the inner fluid flows does not cross the outer flow path through which the outer fluid flows. It flows smoothly without being hindered, and a decrease in pressure loss can be suppressed. Further, since the end barrel inner cylinder and the main body inner cylinder are not exposed to the outside and the end barrel outer cylinder and the main body outer cylinder form the outer shape of the valve device, the handling of the valve device is easy.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a valve device for a double-structure pipe in one embodiment of the present invention.

FIG. 2 is a perspective view showing a main body of the valve device for a dual-structure pipe in the embodiment.

FIG. 3 is a perspective view showing an end trunk portion of the valve device for a dual-structure pipe in the embodiment.

FIG. 4 is a perspective view showing an end trunk portion of the valve device for a dual-structure pipe in the embodiment.

FIG. 5 is a cross-sectional view showing a seat structure of the valve device for a double-structure pipe in the embodiment.

FIG. 6 is a perspective view showing a valve device for a double-structure pipe according to another embodiment of the present invention.

FIG. 7 is a perspective view showing a main body of the valve device for a double-structure pipe in the embodiment.

FIG. 8 is a schematic view showing a conventional valve device for a double-structure pipe.

[Explanation of symbols]

 2 body 3 end body 4 end body outer cylinder 5 end body inner cylinder 6 guide plate 9 main body outer cylinder 10 main body inner cylinder 11 partition plate 12 inner valve body 13 outer valve body 14 valve stem

Claims (2)

(57) [Claims] 1. A valve device for connecting to a double-structured pipeline composed of an inner pipe and an outer pipe, comprising: a main body containing a valve body; and a double-structure pipe located on both sides of the main body. A pair of end barrels forming a connection to the channel, the end barrel being connected to an outer pipe forming an outer flow path of the dual-structure pipe, and an inner flow of the double-structure pipe. An end barrel inner cylinder connected to an inner pipe forming a path, and a guide plate for deflecting an outer flow path in the end barrel outer cylinder to both side regions separated from the end barrel inner cylinder on the main body side. The main body outer cylinder connected to the end body outer cylinder of the end body part, the main body inner cylinder connected to the end body inner cylinder of the end body part, and the main body inner cylinder separated in the main body outer cylinder A partition plate that forms an outer flow path in both side areas; an inner valve body that opens and closes the inner flow path in the main body inner cylinder; and an outer flow path that opens and closes in the both side areas of the main body outer cylinder. And a pair of outer valve elements A valve device for a dual-structure pipe line, wherein an inner valve body and an outer valve body are fixed to a valve stem penetrating in a radial direction. 2. The valve device for a dual structure pipeline according to claim 1, wherein a pair of valve stems are provided radially through the main body, and an inner valve body is fixed to one of the stems. A valve device for a dual-structure pipe line, wherein an outer valve body is fixed to the other valve stem.