JPH0527646U - Pipe clogging prevention device - Google Patents

Abstract

(57) [Abstract] [Purpose] Prevents clogging caused by dust and the like contained in the fluid adhering to the inlet part of the conduit that guides the pressure inside the plant or pipe to the measuring instrument in order to measure the pressure inside the plant or pipe. . A vibrator 14 is attached near the inlets of the conduits 12 and 21 to vibrate the inlets of the conduits, and a purge gas pipe 22 is connected to the conduits so that the purge gas forms an acute angle with the flow of the plant or the fluid in the conduits through the conduits. Thus, the solenoid valve 23 that blows out and stops the purge gas is controlled by the controller 15 together with the vibrator 14.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an apparatus for preventing clogging of a conduit connected to a plant or a pipe for measuring the pressure in a plant such as a furnace or the pressure or flow rate of a fluid in a pipe.

[0002]

[Prior Art]

 There are various fields in which it is necessary to measure the pressure in plants and pipes, such as blast furnaces in steel mills. Taking the blast furnace as an example, the blast furnace has conventionally been used to monitor the reaction conditions and various characteristics in the furnace and to control the pressure inside the furnace and the pressure of exhaust gas discharged from the top of the blast furnace in order to control the inside of the furnace to an appropriate state. The flow rate was measured.

The method of measuring the pressure and the flow rate is, for example, a method of opening a measurement location and directly attaching a conduit to the pressure to conduct the pressure to a measuring instrument. As shown in FIG. There are various methods such as attaching to the open measurement location on the outer circumference of the tube 2 and further attaching the conduit 3 to the side surface of the cylinder to conduct pressure to the measuring instrument. However, like the gas discharged from the top of the blast furnace, If you try to measure the pressure of a fluid that contains a large amount of dust, dust etc. may adhere to the inlet of the conduit, often causing the inlet of the conduit to be blocked, making it impossible to measure the pressure.

In order to solve the above problem, a purge gas pipe 4 is connected to the conduit 3 to forcibly purge dust and the like attached to the inlet of the conduit.

[0005]

[Problems to be solved by the device]

 In the above-mentioned conventional method in which the contaminants at the inlet of the conduit are forcibly blown off by the purge gas, dust and the like that adhere to the inlet of the conduit are only removed intensively, and a lot of dust and the like remains around the inlet, so that it remains. New dust, etc., adhered to the deposits one after another, causing the inlet to be rapidly blocked.

Moreover, during the pressure measurement, the detected value fluctuates greatly depending on the gas pressure during purging, so that normal measurement cannot be performed. The present invention has been made for the purpose of solving the above problems, and is intended to prevent clogging due to dust or the like adhering to the inlet of a conduit.

[0007]

[Means for solving the problem and action]

 Therefore, the present invention is to attach a vibration exciter to vibrate the conduit to prevent dust or the like from adhering to the vicinity of the inlet of the conduit, and to try to shake off the dust or the like even if it adheres. That is, the present invention relates to a pipe connected to a plant or a pipe for measuring the pressure in the plant or the pressure or flow rate of the fluid in the pipe, and conducting the pressure in the plant or the pressure in the pipe to a measuring instrument near the pipe inlet. It is characterized in that a vibration exciter for vibrating is attached.

The vibration of the conduit by the vibration exciter may always be performed, but preferably, a controller for controlling the vibration exciter is provided so that the vibration time, the operation interval and the frequency can be arbitrarily set. And more preferably in combination with gas purging to prevent clogging of the conduit. In this case, the gas purging is performed while the vibrating by the exciter is being performed, and the pressure in the plant or the pipe is measured during the interruption of the gas purging. To perform gas purging during vibration by the shaker, for example, a purge gas pipe connected to the conduit may be provided with a solenoid valve controlled by a controller.In combination with the gas purge, the conduit may also be a fluid flowing through the pipe. It is desirable to connect to the pipe in the same direction as, but at an acute angle. Similarly, when fluid flows in the plant in the circumferential direction by stirring, for example, the conduit is connected to the plant so as to form an acute angle with the circumferential flow. Adhesion such as dust separated from the vicinity of the conduit inlet due to vibration is blown away by the purge gas, and is removed from the conduit inlet portion along with the fluid flow inside the pipe or plant.

[0009]

Example In the example shown in FIG. 2, the pressure of the fluid in the main pipe 11 through which the fluid flows is measured by a measuring instrument 13 via a conduit 12 provided directly to the main pipe 11. The vibrator 14 is attached near the conduit inlet 16 to vibrate the conduit 12, and the controller 15 for controlling the vibrator 14 can control the vibration time, the operation interval and the frequency. In the figure, 17 is a solenoid valve.

In the embodiment shown in FIG. 3, the conduit 21 connected to a measuring device (not shown) is connected to the main pipe 11 at an acute angle with the fluid in the main pipe 11 and is connected to the main pipe 11. Is further connected to a purge gas pipe 22 so that the purge gas is blown in the same direction as the fluid in the main pipe. A vibrator 14 is attached to the conduit inlet, and a solenoid valve provided in the purge gas pipe 22. It is controlled by the controller 15 together with 23.

In this embodiment, the exciter 14 is operated by the controller 15 to vibrate the conduit 21 at a set frequency for a certain period of time, and at the same time, the solenoid valve 23 is opened to open the gas pipe 22 and the conduit 21. Through this, the purge gas blows out into the main pipe, blows out dust, etc. shaken off by vibration and flows out together with the fluid flowing in the pipe.

[0012]

[Effect of the device]

 The present invention is configured as described above and has the following effects. According to the apparatus of claim 1, vibration of the conduit inlet portion prevents dust and the like from adhering to the conduit inlet portion, and even if it adheres, it is shaken off. This prevents clogging of the conduit.

According to the apparatus of the second aspect, it is possible to control the excitation time, the operation interval, the vibration frequency and the like. In the apparatus according to the third aspect, the dust and the like shaken off by the vibration is blown into the plant or the pipe by the purge gas, and the adhesion of the dust and the like can be effectively prevented.

In the apparatus according to the fourth aspect, the dust blown off by the purge gas is carried along with the fluid flow in the plant or the pipe and is removed from the inlet portion of the conduit.

[Brief description of drawings]

FIG. 1 is a diagram showing a conventional example.

FIG. 2 is a cross-sectional view of a device in which a vibrator is attached to a conduit.

FIG. 3 is a cross-sectional view of an apparatus in which a shaker is attached to a conduit connected with a purge gas pipe.

[Explanation of sign]

11 ・ ・ Main pipe 12,21 ・
・ Conduit 13 ・ ・ Measuring instrument 14 ・ ・ Vibrator 15 ・ ・ Controller 16 ・ ・ Conduit inlet 17, 23 ・ ・ Solenoid valve 22 ・ ・ Purge gas pipe

Claims (4)

[Scope of utility model registration request] 1. A conduit connected to a plant or a pipe for measuring the pressure in the plant or the pressure or flow rate of the fluid in the pipe, and transmitting the pressure in the plant or the pressure in the pipe to a measuring instrument, near the conduit inlet. An apparatus for preventing clogging of a conduit, comprising a vibrating device for vibrating the conduit. 2. The conduit clogging prevention device according to claim 1, further comprising a controller for controlling the vibration exciter. 3. The device for preventing clogging of a conduit according to claim 2, wherein a gas purge pipe is connected to the conduit, and a solenoid valve provided in the gas purge pipe is controlled by the controller together with the vibrator. 4. The device for preventing clogging of a conduit according to claim 3, wherein the conduit is connected to the plant or the pipe so as to form an acute angle with the flow of the fluid in the plant or in the pipe.