JPH11294677A - Sight Glass - Google Patents

Abstract

(57) [Summary] [PROBLEMS] By exchanging a fluid monitoring unit for monitoring a state in a pipe, it is possible to quickly and flexibly respond to a change in the purpose of use of an existing pipe, and replace the pipe. Providing sight glass that minimizes the downtime of piping use. SOLUTION: A sight glass main body 1 is installed between pipes P, and a fluid monitoring part that fits a use purpose among fluid monitoring parts having various functions is mounted in a mounting hole 12 of the sight glass main body 1. The fluid passage 10 of the main body 1 communicates with the communication flow path of the fluid monitoring unit, and the monitoring means of the fluid monitoring unit monitors the state of the fluid flowing through the communication flow path.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sight glass for monitoring a state of a fluid flowing in a pipe (for example, a flow rate, a color, and a state of mixing of bubbles).

[0002]

2. Description of the Related Art In general, in order to monitor the state of a fluid flowing in a pipe, each section of the pipe is provided with a monitoring pipe member called a sight glass for visually observing the inside of the pipe. In this sight glass, a sight glass main body is incorporated between a pair of pipe flanges arranged at a predetermined distance from each other and is flange-coupled to the flanges of both pipes. Although the basic structure has been made, for example, the one equipped with a flapper whose angle changes according to the flow rate inside the sight glass body,
Some have various functions, such as a tape or ball with a member that can clearly understand the flow of fluid inside the sight glass main body. I try to incorporate it.

[0003]

However, the conventional sight glass has a problem that it is difficult to change it to a sight glass having another function once it has been incorporated into a pipe. This is because different types of sight glass have different designs of the sight glass body, so the dimensions between the flange faces are different,
This is because it is difficult to assemble between the already installed pipes.

The present invention has been made in view of the above circumstances, and an object of the present invention is to change the purpose of use of an existing pipe by replacing a fluid monitoring unit for monitoring a state in the pipe. An object of the present invention is to provide a sight glass capable of promptly and flexibly responding to a case where a pipe is used, and capable of minimizing a use stoppage time of a pipe due to replacement.

[0005]

A first aspect of the present invention is a sight glass for monitoring a state of a fluid flowing in a pipe, and a sight glass body having a fluid passage therein, and a sight glass provided in the sight glass body. A fluid monitoring unit detachably mounted in the mounting hole provided, the fluid monitoring unit monitoring a communication channel communicating with the fluid passage of the sight glass main body, and a state of a fluid flowing through the communication channel. Monitoring means. According to the first aspect of the present invention, the sight glass main body is incorporated between pipes, and a fluid monitoring part having various functions is fitted to a mounting hole of the sight glass main body, the fluid monitoring part being adapted to a purpose of use. The fluid passage of the glass body and the communication flow path of the fluid monitoring unit are communicated with each other, and the state of the fluid flowing through the communication flow path is monitored by the monitoring unit of the fluid monitoring unit. According to a second aspect of the present invention, guide means for guiding the fluid monitoring unit to the mounting hole of the sight glass main body is provided between the sight glass main body and the fluid monitoring unit. According to the second aspect, when mounting the fluid monitoring unit in the mounting hole of the sight glass main body, the position (mounting angle) between the fluid monitoring unit and the mounting hole of the sight glass main body is adjusted by the guide means. This can be easily performed, and the communication flow path of the fluid monitoring unit and the fluid passage of the sight glass body can be smoothly matched. Further, according to a third aspect of the present invention, the monitoring means is constituted by a transparent window for visually observing the communication flow path. According to the third aspect, the state of the fluid is monitored by visually checking the fluid flowing through the communication channel from the transparent window of the fluid monitoring unit. Still further, according to a fourth aspect of the present invention, the monitoring means includes a transparent window for visually observing the communication flow path, and a flow member provided in the communication flow path. According to the fourth aspect, the state of the fluid is monitored by visually observing the behavior of the flow member provided in the communication channel from the transparent window of the fluid monitoring unit. According to a fifth aspect of the present invention, the monitoring means includes a flow rate detecting means for detecting a flow rate of the fluid flowing in the communication flow path, and a signal output means for outputting a detection value detected by the flow rate detecting means as an electric signal. It is composed of According to the fifth aspect, the flow rate of the fluid flowing in the communication flow path is detected by the flow rate detection means, and the detected value is output as an electric signal by the signal output means. Perform opening and closing operations. According to a sixth aspect of the present invention, the monitoring means includes a flow rate detecting means for detecting a flow rate of the fluid flowing in the communication flow path, and a recording means for recording a detection value detected by the flow rate detecting means. Things. In this case, the flow rate of the fluid flowing in the communication flow path is detected by the flow rate detecting means, and the detected value is recorded by the recording means.

[0006]

Embodiments of the present invention will be described below with reference to the drawings. 1 is a cross-sectional view of a sight glass main body, FIG. 2 is a cross-sectional view illustrating an example of a fluid monitoring unit, FIG. 3 is a cross-sectional view illustrating another example of the fluid monitoring unit, and FIG. 4 is another example of the fluid monitoring unit. It is sectional drawing. In FIG. 1, reference numeral 1 denotes a sight glass main body, and a straight fluid passage 10 is formed inside the sight glass main body 1. Flanges 11 are formed at both ends of the sight glass body 1 corresponding to an inlet and an outlet of the fluid passage 10, respectively. The flanges 11 and the flanges P1 of the pair of upper and lower pipes P are used to stop bolts or the like. It is connected by the attaching means. In the middle part of the sight glass body 1,
A mounting hole 12 orthogonal to the fluid passage 10 is formed, and a transparent window 13 ′ is provided at a tip end of the mounting hole 12 by a ring-shaped mounting member 13. The mounting member 13 and the transparent window 13 'may be connected to the
As shown in FIG. 7, it is possible to replace the closing member 13 ″.

Reference numeral 2 in FIG. 2 denotes a fluid monitoring unit. The fluid monitoring unit 2 has a pair of through holes 21 having the same diameter as the fluid passage 10 of the sight glass main body 1 and opposed to each other in an intermediate portion of a straight tubular main body 20. A space between the passages 21 is a communication passage 22 that communicates with the fluid passage 10. A transparent window 23 is attached to the base end of the main body 20 by a ring-shaped attachment member 24. Further, a concave portion (guide means) 25 orthogonal to the center line of both through holes 21 is formed in the outer peripheral portion of the main body portion 20, and corresponding to the concave portion 25, a mounting hole of the sight glass main body 1 is provided. A pair of convex portions (guide means) 14 are formed in the inside 12.

In FIG. 3, a support shaft 26 is provided on the inner peripheral portion of the main body 20 of the fluid monitoring section 2 and between the two through holes 21 so as to be orthogonal to the center line of the two through holes 21. A flapper (flow member) 27 is rotatably provided on the support shaft 26. And this flapper 27
Is provided with a spring (not shown) for urging the attitude of the flapper 27 in a direction against the flow. Further, in FIG. 4, a tape (flow member) 28 is attached instead of the flapper 27 of FIG.

In the sight glass configured as described above, depending on the purpose of use, the most appropriate one from the fluid monitoring unit 2 having various functions as shown in FIGS. 2, 3 and 4. Is installed in the mounting hole 12 of the sight glass main body 1. Then, similarly to the related art, the sight glass main body 1 with the fluid monitoring unit 2 mounted is assembled between the pair of pipes P. Accordingly, when the fluid monitoring unit 2 of FIG. 2 is mounted, the state of the fluid flowing from the inside of the pipe P to the communication channel 22 of the fluid monitoring unit 2 via the fluid passage 10 of the sight glass main body 1 is determined by a transparent window. It is visible through 23. Also,
When the fluid monitoring unit 2 of FIG. 3 is used, the flapper 2
Since the pivot 7 rotates against the urging force of the spring in accordance with the flow rate of the fluid, the state of the flow of the fluid can be grasped by visually observing the angle. Further, the fluid monitoring unit 2 of FIG.
In the case of (1), the state of the fluid is grasped by visually observing the state of swing of the tape 28.

When it is necessary to replace the sight glass for some reason, for example, the purpose of use of the sight glass is changed, the sight glass is assembled between the pipes P with the use of the pipes P stopped. The fluid monitoring unit 2 is pulled out from the mounting hole 12 of the sight glass main body 1, and another fluid monitoring unit 2 is newly mounted. In this case, the fluid monitoring unit 2 is attached to the mounting hole 12 of the sight glass body 1 with the projection 14 of the sight glass body 1 and the recess 25 of the fluid monitoring unit 2 aligned.
If it is installed in the inside, the through hole 21 of the fluid monitoring unit 2 and the fluid passage 10 of the sight glass main body 1 completely match,
The fluid monitoring unit 2 can be mounted on the sight glass body 1 smoothly, and there is no displacement between the two.

Thus, the sight glass body 1 is connected to the pipe P
The function of the sight glass can be quickly changed in accordance with the purpose of use simply by exchanging the fluid monitoring unit 2 by a simple operation in a state where the sight glass is assembled. Therefore, the function of the sight glass can be easily changed according to the purpose of use without reducing the operation rate of the facility using the pipe P such as the plant as much as possible. In the present embodiment, as the monitoring means, a type that is viewed from the transparent window 23 shown in FIG. 2, a type that includes a flapper 27 in addition to the transparent window 23 shown in FIG. 3, and a transparent window 2 that is shown in FIG.
Although the type provided with the tape 28 in addition to 3 was described, the present invention is not limited to this, and a scale indicating the flow rate of the fluid in accordance with the rotation angle of the flapper 27 is displayed on the transparent window 23, or instead of the tape 28. A ball floating by the flow of the fluid may be provided in the communication channel 22. Further, as the monitoring means, a fluid detecting means such as a flow meter for detecting the flow rate of the fluid is provided in the communication flow path 22, and the detected value detected by the fluid detecting means is converted into an electric signal by a signal output means such as a transmitter. The flow rate may be output and the valve may be opened or closed in accordance with the output signal. Further, the detection value detected by the flow rate detection means may be recorded in a memory (recording means) and stored as data. Good.

[0012]

As described above, according to the first aspect of the present invention,
According to the method, a sight glass main body is incorporated between pipes, and a fluid monitoring unit having various functions is fitted to a mounting hole of the sight glass main body. And the communication channel of the fluid monitoring unit is communicated with the fluid monitoring unit, and the state of the fluid flowing through the communication channel is monitored by the monitoring unit of the fluid monitoring unit, thereby flexibly and quickly responding to a change in the purpose of use of the sight glass. As a result, it is possible to minimize the use stoppage time of piping using a sight glass such as a plant. According to the second aspect of the present invention, when the fluid monitoring unit is mounted in the mounting hole of the sight glass main body, the position (mounting angle) between the fluid monitoring unit and the mounting hole of the sight glass main body is guided by the guide means. The alignment can be easily performed, and the communication flow path of the fluid monitoring unit and the fluid passage of the sight glass body can be smoothly matched. Therefore, the replacement operation of the fluid monitoring unit can be performed smoothly and reliably. Furthermore, according to the third aspect of the present invention, the state of the fluid can be easily monitored by visually observing the fluid flowing through the communication channel from the transparent window of the fluid monitoring unit. Furthermore, according to the fourth aspect of the present invention, the state of the fluid can be grasped more accurately by visually observing the behavior of the flow member provided in the communication channel from the transparent window of the fluid monitoring unit. Also, claim 5 of the present invention
According to the method, the flow rate of the fluid flowing in the communication flow path is detected by the flow rate detection means, and the detected value is output as an electric signal by the signal output means. Can be performed smoothly. Further, according to claim 6 of the present invention, the flow rate of the fluid flowing in the communication flow path is detected by the flow rate detecting means,
By recording this detection value by the recording means, the flow rate of the fluid can be easily accumulated as data.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a sight glass main body according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view illustrating an example of a fluid monitoring unit.

FIG. 3 is a cross-sectional view illustrating another example of the fluid monitoring unit.

FIG. 4 is a sectional view showing another example of the fluid monitoring unit.

FIG. 5 is a sectional view of a sight glass main body showing another embodiment of the present invention.

[Explanation of symbols]

 P Piping 1 Sight glass body 2 Fluid monitoring unit 10 Fluid passage 12 Mounting hole 14 Convex part (guide means) 22 Communication channel 23 Transparent window 25 Concave part (guide means)

Claims (6)

[Claims] 1. A sight glass for monitoring a state of a fluid flowing in a pipe, comprising: a sight glass main body having a fluid passage therein; and a fluid detachably mounted in a mounting hole provided in the sight glass main body. A monitoring unit, wherein the fluid monitoring unit includes a communication channel communicating with the fluid passage of the sight glass main body, and monitoring means for monitoring a state of a fluid flowing through the communication channel. Sight Glass. 2. The sight glass according to claim 1, wherein a guide means for guiding the fluid monitoring unit to a mounting hole of the sight glass main body is provided between the sight glass main body and the fluid monitoring unit. 3. The sight glass according to claim 1, wherein the monitoring means is constituted by a transparent window for observing the communication flow path. 4. The sight glass according to claim 1, wherein the monitoring means comprises a transparent window for visually observing the communication flow path, and a flow member provided in the communication flow path. 5. The monitoring means comprises flow rate detecting means for detecting a flow rate of a fluid flowing in the communication flow path, and signal output means for outputting a detection value detected by the flow rate detecting means as an electric signal. The sight glass according to claim 1 or 2, wherein: 6. A monitoring device comprising: a flow rate detecting means for detecting a flow rate of a fluid flowing in a communication flow path; and a recording means for recording a detection value detected by the flow rate detecting means. The sight glass according to claim 1.