JPH0572014A - Flow rate measuring tool for chemical device - Google Patents

Abstract

PURPOSE:To obtain a flow rate measuring tool which can perform measurement and adjustment of a flow rate within a pipe by a chemical device etc. in a short time, efficiently, and accurately under an improved working environment by a small number of workers. CONSTITUTION:A title item consists of a tubular cylinder container 1a where a graduation 1b is marked on a pipe wall and at least an outer wall 1d near an upper-edge opening 1c is adhered to an inner wall or a tip part of a pipe whose flow rate is to be measured. It is recommended that the cylinder container 1a is made of glass, plastic, etc., and a grip 1e is mounted to the cylinder container 1a. By inserting a flow rate measuring tool into the upper-edge opening of the pipe whose flow rate is to be measured, a liquid which flows into the pipe whose flow rate is to be measured can be sampled without any leakage, thus achieving an accurate measurement of flow rate simply by operation from an upper side of the pipe whose flow rate is to be measured and at the same time enabling a flow-rate adjusting operation to be performed from an upper side so that these operations can be performed in a short time, efficiently, and accurately under an improved environment.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a flow rate measuring instrument, and more particularly to a flow rate measuring instrument suitable for measuring a flow rate in a pipe of a chemical device or the like.

[0002]

2. Description of the Related Art In various chemical devices, it is sometimes impossible to constantly install a flow meter even if it is necessary to measure the flow rate in a pipe in the device. In particular, in a wet-wall type absorption tower, it is necessary to measure the flow rate of each absorption tube regularly to prevent uneven flow and to make the flow rate of these tubes equal. Conventionally, in this work, the liquid flowing out from the lower end outlet of the absorption pipe is received by a cylinder container, etc., the flow rate is measured from the amount taken per hour, and the flow rate adjusting device provided at the upper end of the absorption pipe is based on the result. To adjust the flow rate.

That is, FIG. 4 shows an example of a wet-wall type absorption tower for recovering hydrochloric acid gas.
A large number of absorption pipes 100, 100 of about 1 to 160 are vertically attached by the upper holding plate 102 and the lower holding plate 103, and the water supplied from the water supply port 104 is an inner wall surface of the large number of absorption pipes 100, 100. Flowing down, and in the process of flowing down, it comes into contact with the HCl gas taken in from the gas supply port 105 and absorbs it, becoming an HCl solution, and the solution take-out port 10
It is designed to be taken out from 6. The gas other than HCl and the HCl gas that has not been absorbed are guided to the auxiliary absorption tower 11 from the gas outlet 107, the residual HCl gas is absorbed and removed, and the gas other than HCl is separately treated as waste gas. .. Flow rate adjusting devices (notch pipes) 101, 101, which will be described later, are attached to the upper ends of the absorption pipes 100, 100, and the flow rates of the absorption pipes can be made uniform by operating these.

Therefore, in order to maintain good absorption performance of HCl gas, it is necessary to periodically measure the flow rate of the absorption tubes 100, 100 and adjust so that the flow rate of each absorption tube becomes equal. However, in that case, the upper lid 108 of the absorption tower 10
And the lower lid 109 are removed, and as described above, the absorption tube 100
Receive the liquid flowing out from the lower end outlet of the cylinder container, etc.,
The flow rate is measured from the collected amount per time, and the flow rate must be adjusted by operating the flow rate adjusting device 101 provided at the upper end of the absorption tube according to the result, and the work is troublesome.
It required many workers and working time.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its object is to reduce the flow rate of a large number of absorption tubes (flow rate measurement tubes) as described above. It is an object of the present invention to provide a flow rate measuring tool for a chemical device, which can perform measurement and adjustment efficiently and accurately in a short time in a good working environment by a small number of workers.

[0006]

SUMMARY OF THE INVENTION The above object is to provide a tubular structure in which a scale is marked on the pipe wall and at least the outer wall near the upper end opening is in close contact with the inner wall or the tip of the flow rate measuring pipe. This can be achieved by a flow rate measuring instrument for a chemical device, which comprises a cylinder container. It is recommended that the material of the cylinder container be glass, plastics, or the like, and that a handle be attached to the cylinder container.

[0007]

With the flow rate measuring device having the above-described structure, the liquid flowing into the flow rate measuring pipe can be collected without leak by inserting the flow rate measuring device into the upper end opening of the flow rate measuring pipe. Since the flow rate can be accurately measured by only the work from the above, and at the same time, the flow rate adjustment work can be performed from the upper side, it is possible to efficiently perform these works in a short time in a good environment.

[0008]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 shows one embodiment of a flow rate measuring tool for a chemical device according to the present invention, and FIG. 2 shows a state in which it is mounted on the absorption pipe of the wet-wall type absorption tower as described above.

As shown in FIG. 1, a flow rate measuring instrument 1 according to the present invention is composed of a tubular cylinder container 1a, and a graduation 1b for measuring the amount of the sampled liquid is marked on the pipe wall and the upper end thereof. The outer diameter is somewhat enlarged near the opening 1c, and the outer wall 1d at that portion is configured to be in close contact with the inner wall or the tip of the flow rate measurement pipe. Reference numeral 1e is a handle for facilitating the work of attaching or detaching the cylinder container 1a to or from the flow rate measurement pipe. The cylinder container 1a is preferably made of transparent glass or plastics.

FIG. 2 shows a state in which the flow rate measuring instrument 1 is inserted and attached to the upper end opening 100a of the absorption pipe (flow rate measurement pipe) 100 of the wet-wall type absorption tower 10 for recovering hydrochloric acid gas shown in FIG. Is shown. The upper end of the absorption pipe 100 is fixed to the upper holding plate 102 of the absorption tower 10 by fixing screws 110 and 111, and the circular notch pipe (flow rate adjusting device) 101 is screwed on the threaded portion on the outer periphery of the upper end of the absorption pipe 100. Have been combined. Notch tube 101
A V-shaped notch 101a is formed on the wall of the pipe, and water 112 introduced from the water supply port 104 (see FIG. 4) and staying on the upper holding plate 102 flows into the absorption pipe 100 through the notch 101a. Then, it flows down while wetting the inner wall surface of the absorption tube 100, and absorbs HCl gas in the process. Therefore, by adjusting the screwing amount of the notch pipe 101 with respect to the upper end screw part of the absorbing pipe 100, the notch pipe 101 moves up and down and the amount of water flowing from the notch 101a, that is, the absorbing pipe 100.
The flow rate of is adjusted.

When the cylinder container 1a of the flow rate measuring tool 1 is inserted through the upper end opening 100a of the absorption tube 100, the outer wall 1d near the upper end opening of the cylinder container 1a is brought into close contact with the inner wall or the tip of the absorption tube 100. Then, the above V-shaped notch of the notch tube 101
All the water that tries to flow from 101a into the absorption pipe 100 is collected in the cylinder container 1a. Therefore, the flow rate of the absorption pipe 100 is known by setting the flow rate measuring tool 1 as described above and measuring the amount of water collected in the cylinder container 1a within the predetermined fixed time by the scale 1b. Therefore, by adjusting the notch tube 101 based on the above, and performing the same operation for all the absorption tubes, the flow rates of all the absorption tubes can be equalized. Then, since these operations only have to be performed on the upper end side of the absorption tube 100 by removing the upper lid 108 (see FIG. 4) of the absorption tower 10, the lower lid 109 can be removed as in the conventional method. There is no need to do so, and it can be implemented efficiently.

The outer wall 1d near at least the upper end opening of the cylinder container 1a needs to be in close contact with the inner wall or the tip of the absorption pipe 100, which means that all the liquid flowing into the absorption pipe 100 is stored in the cylinder container 1a. The structure is necessary for collecting, and therefore, within the range where the purpose can be achieved, the other part or the whole of the outer peripheral wall of the cylinder container is the absorption pipe 10.
It may be configured so as to be in close contact with the inner peripheral surface of 0.

Further, in the above embodiment, the outer wall 1d near the upper end opening of the cylinder container itself is configured to be in close contact with the inner wall or the tip of the absorption tube 100. You may make it mount | wear with the elastic sealing member which adhere | attaches on the inner wall or the front-end | tip part of an absorption tube.

That is, FIG. 3 shows another embodiment of the flow rate measuring instrument according to the present invention. In this embodiment, a flange portion 1f is formed at the upper end of the cylinder container 1a,
A seal member 1g made of an elastic synthetic resin or rubber is attached to the lower part of the seal member, and the cylinder member 1a is pushed into the absorption pipe at the time of use.
1 g is designed to be in close contact with the inner wall or tip of the absorption tube 100. Further, the handle 1e is attached to the flange portion 1f. This handle 1e is not always a cylinder container
It is not necessary to manufacture it integrally with 1a, and a separately manufactured handle may be attached by hooking it from the lower surface of the flange portion 1f.

[0015]

Since the present invention is constructed as described above, according to the present invention, the flow rate measurement and adjustment work of various chemical devices, particularly a large number of absorption tubes in a wet-wall absorption tower, can be performed very efficiently. be able to. The main effects of the present invention are listed below.

In order to adjust the amount of water flowing down each of a large number of absorption tubes, it has conventionally been necessary to remove the upper lid and the lower lid of the absorption tower, but in the present invention, the upper lid is removed. The flow rate can be adjusted simply by removing it. As a result, facility inspection and adjustment costs can be significantly reduced.

Conventionally, the workers are arranged at the upper part and the lower part of the absorption tower to adjust the flow rate, but in the present invention, the workers may be arranged only at the upper part of the absorption tower. Therefore, in the conventional method, 6 to 7 workers were required for one absorption tower in order to measure and adjust the flow rate of the absorption tube, but the present invention can be carried out by 2 workers.

In the conventional method, a person who works in the lower part of the absorption tower needs to wear rain gear at the time of work because it gets wet with the water flowing out from the lower end of the absorption tube. The environment is improved. This advantage is extremely important and effective for field workers.

In the conventional method, water flowing out from the lower end of the absorption tube is intermittently interrupted, water from other than the absorption tube to be measured flows into the measuring cylinder container, and further, water spills out of the cylinder container. However, the measurement accuracy was poor, but the flow rate measuring instrument according to the present invention is used by being set on the upper end of the absorption tube, so that all such problems are solved.

In the conventional method, the flow rate was measured at the lower part of the absorption tower, and the flow rate was adjusted by adjusting the notch tube at the upper part with reference to the measurement result. Then the flow rate can be measured at the top of the absorption tower,
The notch tube can be adjusted on the spot, greatly improving workability. Also, by improving work efficiency in this way,
The time required for flow rate measurement can be shortened.

In the conventional method, it was necessary to install a workbench, a work floor, a scaffold, etc. in the lower part of the absorption tower in order to perform the flow rate measuring work, but in the present invention, it is not necessary, and the work cost and time are reduced. Reduction is possible.

In the conventional method, a large number of instruments such as a graduated cylinder, a wide-mouthed bottle, a rubber hose, and a rubber stopper were required as a measuring tool, but in the case of the present invention, it is possible to measure with one flow rate measuring tool according to the present invention. Costs can be reduced. As described above, the effect of the flow rate measuring device according to the present invention is remarkable.

It should be noted that the present invention is not limited to the above embodiments, and the present invention includes all modified embodiments which can be easily conceived by those skilled in the art from the above description within the scope of the object thereof. It is a thing.

[Brief description of drawings]

FIG. 1 is an external perspective view showing an embodiment of a flow rate measuring tool for a chemical device according to the present invention.

FIG. 2 is a cross-sectional view showing a state in which this is attached to an absorption tube that is a flow rate measurement tube.

FIG. 3 is an external perspective view showing another embodiment of the flow rate measuring instrument for a chemical device according to the present invention.

FIG. 4 is an explanatory diagram showing an outline of a wet-wall type absorption tower as an example of an object of use of the flow rate measuring instrument according to the present invention.

[Explanation of symbols]

 1 Flow rate measuring tool 1a Cylinder container 1b Scale 1c Top opening 1d Outer wall 1e Handle 1f Flange 1g Seal member 10 Wet-wall absorption tower 100 Absorption pipe 101 Notch pipe 102 Upper holding plate 103 Lower holding plate 104 Water supply port 105 HCl Gas inlet 106 HCl solution outlet 107 Gas outlet 108 Upper lid 109 Lower lid 110,111 Fixing screw 112 Water

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Ichimichi Tanaka 30 Asamu-cho, Omuta-shi, Fukuoka Mitsui Toatsu Chemical Co., Ltd. Within the corporation

Claims (6)

[Claims] 1. The scale (1b) is marked on the pipe wall, and at least the outer wall (1d) near the upper end opening (1c) is provided with the flow receiving pipe (1).
00) A flow measuring instrument for a chemical device, which comprises a tubular cylinder container (1a) configured so as to be in close contact with the inner wall or the tip portion thereof. 2. The chemical apparatus according to claim 1, wherein the outer wall (1d) near the upper end opening of the cylinder container (1a) itself is configured to be in close contact with the inner wall or the tip of the flow rate measuring pipe (100). Flow measuring tool. 3. An elastic sealing member (1g) which is in close contact with the inner wall or the tip of the flow rate measuring pipe (100) is mounted on the outer wall near the upper end opening of the cylinder container (1a).
A flow measuring instrument for a chemical device according to. 4. The flow rate measuring instrument for a chemical device according to claim 1, wherein a handle (1e) is attached to the cylinder container (1a). 5. The flow rate measuring instrument for a chemical device according to claim 1, wherein the material of the cylinder container (1a) is glass. 6. The flow rate measuring instrument for a chemical device according to claim 1, wherein the material of the cylinder container (1a) is plastics.