JPH0669247U - Coke extraction device for coke dry fire extinguishing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a coke cutting device in a coke dry fire extinguishing system, which can improve the sealing property of a cutting opening and prolong the life of the seal. [Constitution] Door 1 for opening and closing the opening 13 of the coke cutting device
4, the inside gate 19 is opened via the opening / closing differential mechanism 21 so that the door 14 is closed prior to the door 14 and opened later.
A rubber seal 28 between the door 14 and the opening 13 and between the inner gate 19 and the opening 13, respectively.
29 and metal seals 26 and 27 are provided. When the opening 13 is opened and closed by the inner gate 19 with a time lag from the door 14, the metal seals 26 and 27 are closed first to prevent coke powder from falling onto the rubber seal portion of the door 14 and to be sealed by a double seal. To improve the performance and prevent the coke from getting caught in the product to extend the service life. Further, when closing, the door 14 is first retracted to prevent the coke from colliding with the rubber seals 28 and 29, thereby extending the service life.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to the improvement of the coke cutting device for discharging the cooled coke from the gas circulation system in the coke dry fire extinguishing system, with the aim of improving the sealing property of the door that opens and closes the opening and extending the service life. is there.

[0002]

[Prior art]

 In the coke dry fire extinguishing equipment used for the production of coke, which is indispensable for the steelmaking process, the red hot coke put in the cooling tower is cooled by extinguishing it by circulating an inert gas mainly containing nitrogen. There is.

The cooled coke is cut out by opening the upper and lower opening doors of the coke cutting device.

In the coke cutting device for such a coke dry fire extinguishing facility, as shown in FIG. 3, for example, the tip of the gate casing 2 having the shoe liner 1 mounted inside has a rectangular opening 3 for cutting. A rectangular door 4 is provided at the tip of the opening 3 and can be opened and closed via a link 6 supported by a pin 5 on the gate casing 2. A gate liner 7 is attached to the inner surface of the gate casing 2 of the door 4, and the coke C is supported by the gate liner 7.

A seal portion is provided on the outer surface around the rectangular opening 3, and the metal seal 8 is attached because the seal pressure is relatively low at about 400 mmAq, and the metal seal around the door 4 is attached. It is designed to make metal contact with 9.

[0006]

[Problems to be solved by the device]

 In the coke cutting device for such a coke dry fire extinguishing system, as shown in FIG. 4A, even when the door 4 is fully closed, the shoe liner 1 inside the gate casing 2 and the gate inside the door 4 are closed. Since there is a gap between the coke C and the liner 7, the coke C powder accumulates above the contact portion between the metal seals 8 and 9 below the gate liner 7.

On the other hand, the opening 3 at the tip of the chute 2 is designed to be sealed with the metal seals 8 and 9 because the sealing pressure is relatively low, but the metal seals 8 and 9 cannot be completely sealed. Instead, the circulating gas leaks little by little.

For this reason, the coke C of the powder also leaks together with the leak of the circulating gas, and the metal seal 8 is continuously worn or the coke C of the powder is caught when the door 4 is closed. There's a problem.

Further, although the leakage of the circulating gas itself has not been a problem at all, it is necessary to prevent the leakage as much as possible since it contains combustible components, toxic hydrogen and carbon monoxide.

Further, when the door 4 is opened, in the initial stage when the door 4 is opened very slightly, as shown in FIG. 4 (b), the circulating gas in the interior is ejected, and the ejected gas similarly causes the meta gas. There is a problem that the ru seal 8 is worn.

Further, in the state in which the door 4 is gradually opened, as shown in FIGS. 4C and 4D, the coke C falls along the shoe liner 1 of the gate casing 2, and the falling coke. There is a problem that C collides with the metal seal 9 on the lower side of the door 4 and wears the metal seal 9 of the door 4.

The present invention has been made in view of the above problems of the prior art, and an object of the present invention is to provide a coke cutting device for a coke dry fire extinguishing system capable of improving the sealing property and extending the life of the seal. Is.

[0013]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the coke cutting device in the coke dry fire extinguishing system of the present invention is equipped with a seal member for sealing the opening and closing of the opening of the batch type coke cutting device of the coke dry extinguishing system. It is characterized in that this door is provided with an inner gate that is closed earlier than the door and opened later, and that a seal member is also attached between the inner gate and the opening.

[0014]

[Action]

 According to the coke cutting device in this coke dry fire extinguishing system, the door that opens and closes the opening of the coke cutting device is equipped with an inner gate that is closed before the door and opened later. A seal member is provided between the door and the opening and between the inner gate and the opening.The opening and closing of the opening is performed at the inner gate with a time lag from the door, and a double seal is provided to prevent the door from opening. The problem of coke dust being caught in the seal is solved, and a rubber seal can be used for the door seal to improve the sealing performance and extend the service life.

[0015]

【Example】

 An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is an enlarged sectional view of an embodiment of a coke cutting device in a coke dry fire extinguishing system of the present invention.

In the coke cutting device 10 for this coke dry fire extinguishing equipment, the tip of the gate casing 12 having the shoe liner 11 mounted inside is a rectangular opening 13 for cutting. A rectangular door 14 is arranged in the front and is connected to the gate casing 12 via a link 16 supported by a pin 15 and a pin 17, and can be opened and closed with the pin 15 as a rotation center. A hydraulic cylinder (not shown) is connected to a pin 17 that connects the door 14 and the link 16 via a link mechanism such as a rod 18, and the opening / closing force from the hydraulic cylinder is transmitted to the door 14. It is like this.

Inside the door 14, an inner gate 19 is arranged, the upper end is connected to the door 14 via a pin 20, the lower end is closed prior to the door, and the door is opened later. It is connected to the door 14 via the opening / closing differential mechanism 21.

In the opening / closing differential mechanism 21, a cylindrical outer cylinder 22 is fixed to the door 14, a piston 23 is slidably mounted in the outer cylinder 22, and the bottoms of the piston 23 and the outer cylinder 22 are attached. A spring 24 for urging the piston 23 to be pushed forward is mounted between the first and second ends, and the lower end of the inner gate 19 is connected to the piston 23 via a pin 25.

Therefore, when the door 14 is closed, the inner gate 19 is pushed forward by the spring 24. Therefore, first, the inner gate 19 is closed, and the door 14 is further closed. The door 14 is closed against the spring 24.

Further, when the door 14 is opened, only the door 14 is opened until the spring 24 is fully extended, and the inner gate 19 is opened only when the door 14 is further opened. The gate 19 is opened and closed with a time lag.

The seal between the door 14 and the inner gate 19 and the opening 13 is provided with metal seals 26 and 27, which also function as stoppers, at the contact portions of the inner gate 19 and the opening 13, respectively. Rubber seals 28 and 29 are provided at the contact portions between the outer door 14 and the opening 13, respectively.

In the coke cutting device 10 in the coke dry fire extinguishing facility thus configured, the door 14 and the inner gate 19 are opened and closed and sealed as follows.

(1) When the opening 13 is closed (see FIGS. 2 (d)-(c)-(b)-(a)) A force from a hydraulic cylinder (not shown) is applied to the pin 17 of the door 14 via the link 18. When transmitted, the inner gate 19 is closed to the door 14 while being pushed forward by the spring 24, and first, the metal seal 26 of the inner gate 19 is brought into contact with the metal seal 27 of the opening 13 to be closed. (See FIG. 2 (b)).

When a force is further applied to close the door 14 from this state, the inner gate 19 is fixed using the metal seals 26 and 27 as stoppers, so that the door 14 is closed against the spring 24. Then, the rubber seals 28 and 29 come into contact with each other and the opening 13 is completely closed (see FIG. 2A).

In this way, if the inner gate 19 is first closed and then the door 14 is closed, the metal seal 26 of the inner gate 19 and the metal seal 27 of the opening 13 which are closed first come into contact with each other first. The powder coke C is prevented from falling below the metal seals 26 and 27.

As a result, the powder coke C is not caught in the seal portion disposed outside the metal seals 26 and 27, and the rubber seals 28 and 29 can be used for sealing.

(2) When opening the opening 13 (see FIGS. 2 (a)-(b)-(c)-(d)) The force from a hydraulic cylinder (not shown) is applied to the pin 17 of the door 14 via the link 18. When reaching, the rubber seals 28 and 29 are separated until the spring 24 is fully extended, and then only the door 14 is opened (see FIG. 2 (b)). When the door 14 is further opened, the inner gate 19 is opened. After that, the metal seals 26 and 27 are also separated from each other, the inner gate 19 is opened, and the door 14 and the inner gate 19 are opened with a time difference (see FIGS. 2C and 2D).

In this way, when the door 14 is first opened and then the gate 19 is opened, the rubber seals 28 and 29 of the door 14 which is opened first are in a state of being located away from the opening 13, and the inner gate 19 is opened. Even if the coke C is blown out at the very early stage when the gas is opened, the coke C collides with the direct rubber seal 28 as shown in FIGS. 2 (c) and 2 (d). This is prevented together with the guard by the metal seal 26 of the inner gate 19.

As a result, the powder coke C does not collide with the seal portion arranged outside the metal seals 26 and 27, the rubber seals 28 and 29 can be used for sealing, and abrasion is prevented. It

As described above, the opening 13 is opened and closed by the inner gate 19 that stops the movement of the coke C and the door 14 that is responsible only for the gas seal. A pair of link mechanisms connected to the door 14 for opening and closing the opening 13 is used. And the hydraulic cylinder alone, the inner gate 19 and the door 14 can be opened and closed by the same operation as the conventional door 4 described in FIG.

Further, since the opening 13 is opened and closed by the inner gate 19 and the door 14, only the door 14 can be opened while the coke C is supported.

The present invention is not limited to the above-described embodiment, and each component may be modified within the scope of the invention.

[0033]

[Effect of device]

 As described above in detail with one embodiment, according to the coke cutting device in the coke dry fire extinguishing equipment of the present invention, the door for opening and closing the opening of the coke cutting device is closed before the door. Since the inner gates that are opened later are installed and the seal members are provided between the door and the opening and between the inner gate and the opening, the inner gate opens and closes the opening with a time lag from the door. By contacting the inner gate seal first, problems such as coke dust getting caught in the door seal can be solved, and it is possible to use a rubber seal for the door seal. It is possible to improve.

Further, since the door seal can be retracted rearward when the opening is opened, wear of the seal due to collision of coke powder can be prevented, thereby extending the life of the seal. it can.

Further, since the double seals are provided, the sealability is improved, the circulating gas is prevented from leaking, and the safety is further improved.

Further, although the double door is used, the number of drive sources can be one, and the structure can be simplified.

[Brief description of drawings]

FIG. 1 is an enlarged cross-sectional view of an embodiment of a coke cutting device in a coke dry fire extinguishing facility of the present invention.

FIG. 2 is an operation explanatory view of an embodiment of a coke cutting device in the coke dry fire extinguishing equipment of the present invention.

FIG. 3 is an enlarged cross-sectional view of a coke cutting device in a conventional coke dry fire extinguisher facility.

FIG. 4 is an operation explanatory view of a coke cutting device in a conventional coke dry fire extinguishing facility.

[Explanation of symbols]

 10 Coke Cutting Device for Coke Dry Fire Extinguishing Equipment 11 Shoot Liner 12 Chute Casing 13 Opening 14 Door 15 Pin 16 Link 17 Pin 18 Rod 19 Inner Gate 20 Pin 21 Open / Close Differential Mechanism 22 Outer Cylinder 23 Piston 24 Spring 25 Pin 26, 27 Metal seal (seal member) 28,29 Rubber seal (seal member) C coke or powder coke

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Masae Yamaguchi, Inventor Masaei Yamaguchi, 1-1-15 Toyosu, Koto-ku, Tokyo Ishikawajima Harima Heavy Industries Co., Ltd. Toji Technical Center (72) Yuuji Teraoka 2 Hinodemachi, Iwakuni, Yamaguchi Prefecture No. 1 in Iwakuni Manufacturing Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. A door for opening and closing an opening of a batch type coke cutting device of a coke dry fire extinguisher is provided with a seal member for sealing the opening and the door, which is closed prior to the door and delayed. A coke cutting device for coke dry fire extinguishing equipment, characterized in that an inner gate that can be opened is provided and a seal member is also attached between the inner gate and the opening.