JPH0451280Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The invention is designed to maintain airtightness between a holder side plate and a piston that moves up and down within the same side plate, and is designed to maintain a constant pressure of gas such as blast furnace gas. This relates to an apparatus for detecting the amount of wear of a sealing material in a gas holder stored in a gas holder.

(Prior art) Fig. 2 shows a liquid seal type gas holder, in which 1 is a holder side plate, 2 is a piston that moves up and down within the same side plate 1, and maintains airtightness between the outer periphery of the piston 2 and the side plate 1. A guide roller 4 that slides along the side plate 1 and prevents the piston 2 from tilting is attached.

FIG. 3 shows the sealing part 3, in which a holding fitting 7 that holds upper and lower sealing materials 5 made of rubber or the like and wooden sealing material spacers 6 that support each of the sealing materials 5 at predetermined intervals is attached via a lever 8. A bullet (not shown) is attached to a support part (not shown) provided on the outer periphery of the piston 2, and is attached to the lever 8.
The sealing material 5 is pressed against the side plate 1 by the urging force of the sealing liquid 9 and the static pressure of the sealing liquid 9 stored in the liquid groove, and the gas stored in the lower part of the piston 2 is sealed.

The sealing liquid 9 flows down from the gap between the side plate 1 and the sealing material 5, is collected in a groove provided at the bottom of the holder, and is circulated to the liquid groove at the top of the piston 2 by a pump that operates intermittently. .

In the figure, reference numeral 10 denotes a flexible membrane such as a canvas interposed between the holding fitting 7 and the piston 2.

(Problem to be solved by the invention) When the gas holder is used for a long period of time, the sealing material wears out, and when the sealing material is extremely worn, the sealing function is impaired and the side plate of the holder is damaged. No consideration was given to detecting the state of wear of the materials.

(Means for Solving the Problem) The present invention relates to a sealing material wear detection device for a gas holder proposed to solve the above-mentioned problem. It slides along the inner peripheral surface of the side plate,
A sealing device includes a pair of upper and lower sealing materials that maintain airtightness between the same side plate and the piston, and a sealing material spacer that is sandwiched between the sealing materials and forms a chamber in which a sealing liquid is stored on the outer periphery. In the gas holder, in the space within the sealing material spacer,
The above problem is solved by installing the tip of an optical fiber that is shielded from light by the inflow of the sealing liquid and connecting the optical fiber to an optical switch amplifier.

(Function) As described above, in the present invention, the tip of the optical fiber connected to the optical switch amplifier is embedded in the seal material spacer sandwiched between the seal materials in the gas holder. As the seal rubber wears down, seal oil flows between the optical fibers, blocking light between the optical fibers.

Light blocking between the optical fibers due to the entry of seal oil is detected by an optical switch amplifier connected by the optical fibers, and an alarm is issued.

(Effect of the invention) According to the invention, the amount of wear of the sealant can be detected by embedding the tip of the optical fiber connected to the optical switch amplifier in the sealant spacer. Therefore, abnormal wear of the sealing material can be prevented, accidents such as gas leakage can be prevented, and the time for replacing the sealing material can be predicted.

(Example) The present invention will be described below with reference to the illustrated embodiments.

FIG. 1 shows a seal portion 3 disposed on the outer peripheral surface of a piston that moves up and down within a side plate 1 of a gas holder.
Reference numerals denote upper and lower sealing materials made of rubber or the like, 6 a wooden sealing material spacer held between each of the sealing materials 5, 5 at a predetermined interval, and 7 a holder for holding the spacer 6 and the sealing material 5. A metal fitting is attached via a lever 8 to a support section provided on the outer periphery of the piston.

A space 11 is provided by hollowing out the inside of the spacer 6, and the tips of two optical fibers 12 are installed in the space 11, and each optical fiber 12 is connected to an optical switch amplifier 1 installed outside the gas holder.
Connected to 3.

Since the illustrated embodiment is configured as described above, when the wear of the seal material 5 and the seal material spacer 6 progresses to the space 11 in the spacer 6, the seal oil 9 flows into the space 11 and the seal oil 9 flows into the space 11. Light is blocked between the optical fibers 12 and 12 of the book.

This is detected by the optical switch amplifier 13 and an alarm is issued.

In this way, according to the embodiment, wear of the sealing material 5 can be detected with a simple configuration.
It is possible to prevent abnormal wear of the sealing material 5, gas leakage accidents can be prevented, and it is also possible to predict when the sealing material 5 will be replaced.

In addition, since signals are transmitted through the optical fiber 12 in and around the gas holder, safety and explosion-proofing is possible.
Constructed of only one piece, it has little deterioration over time and is easy to maintain.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of a sealing material wear amount detection device in a gas holder according to the present invention;
FIG. 2 is a vertical cross-sectional view showing an outline of a gas holder equipped with the device of the present invention, and FIG. 3 is a vertical cross-sectional view of a sealing portion of a conventional gas holder. 1... Gas holder side plate, 2... Piston, 5...
...Sealing material, 6...Sealing material spacer, 12...
optical fiber.

Claims (1)

[Scope of utility model registration request] A pair of upper and lower sealing materials that slide along the inner circumferential surface of the side plate and maintain airtightness between the side plate and the piston are placed on the outer periphery of the piston that moves up and down within the side plate of the gas holder, and a pair of sealing materials are sandwiched between the sealing materials. In the gas holder, the gas holder is equipped with a seal device including a sealing material spacer that forms a chamber on the outer periphery for storing a sealing liquid, and the tip of an optical fiber that is shielded from light by the inflow of the sealing liquid is placed in the space within the sealing material spacer. 1. A sealing material wear detection device for a gas holder, characterized in that the same optical fiber is installed and the same optical fiber is connected to an optical switch amplifier.