CN219345663U

CN219345663U - Gas exchange device of coke dry quenching furnace

Info

Publication number: CN219345663U
Application number: CN202223200035.9U
Authority: CN
Inventors: 肖凤桂
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-11-23
Filing date: 2022-11-23
Publication date: 2023-07-14
Anticipated expiration: 2032-11-23

Abstract

A gas exchanging device for coke dry quenching furnace is composed of main valve with valve shaft and shaft end seal, pneumatic head installed to the shaft end of main valve shaft, supporter fixed to the tail end of main valve, reversing valve installed to supporter, moving rod installed to reversing valve, long slide slot on moving rod, and air inlet for compressed air source. The push-pull rod is operated according to a standard process program to drive the carrying rod, so that the valve position of the reversing valve can be controlled, and the air source compressed air is controlled to enter and exit the pneumatic head according to the process program, at the moment, the pneumatic head can drive the main valve to perform corresponding opening and closing actions, and a plurality of pins on the push-pull rod simultaneously drive the plurality of gas exchange devices to be synchronously opened or synchronously closed, so that the accurate exchange supply of the dry quenching coke oven gas is ensured, and the technical problem of gas overflow leakage is thoroughly solved.

Description

Gas exchange device of coke dry quenching furnace

Technical Field

The utility model relates to a gas exchange device, in particular to an exchange device for controlling the gas supply of a coke dry quenching furnace.

Background

The existing dry quenching coke oven gas exchange device consists of a conical cock valve without a valve shaft and a shaft end seal and a carrying rod with a long chute; the conical cock valve is characterized in that the conical cock valve is tightly matched with a conical sealing surface in the valve body by the pretightening force of a spring to achieve the sealing purpose, and the taper machining error between the conical cock valve and the conical sealing surface in the valve body is coated with butter to achieve the sealing effect; the moving rod with the long sliding groove is fixedly connected to one end of the conical cock, the power for operating the moving rod is provided by a long pushing rod arranged above, a plurality of pins are arranged on the long pushing rod, the corresponding pins are inserted into the long sliding groove on the moving rod of the corresponding exchange device, so that the moving rod of the corresponding exchange device can be driven by the pins to realize synchronous opening or synchronous closing of a plurality of exchange valves as long as the pushing rod is operated according to the process program requirement, and the accurate exchange supply of the dry quenching coke oven gas is ensured. However, the existing dry quenching coke oven gas exchange devices have some disadvantages: the exchange device only depends on the moment of the moving rod supplied by the pin of the push-pull rod to operate the opening and closing of the conical cock valve, and the common operation moment is very small and can not drive the valve provided with the shaft and having the shaft end seal to open and close, so that the valve is not provided with the shaft and the shaft end seal, only provided with the pre-tightening spring, and the tight contact between the conical cock and the conical surface of the valve body is realized by the pre-tightening force of the spring to refill butter so as to achieve the sealing purpose; due to the structural design, when a set screw of the spring is loosened, the spring is fatigued and fails or the spring is broken, the pretightening force of the spring is reduced or lost, and a large amount of fuel gas can quickly overflow and leak; and because dust and other impurity particles exist in the fuel gas, grease coated on the conical cock can be dry and hard, so that the conical cock is displaced and sealed to be invalid, and a large amount of fuel gas is quickly overflowed and leaked. Because of the overflow leakage of the fuel gas, the system environment frequently gives out an alarm, even the explosion phenomenon frequently occurs, and the possibility of the explosion accident is more likely.

Disclosure of Invention

The utility model aims to provide a dry quenching coke oven gas exchange device, which can meet the standard of a dry quenching coke oven gas supply program, and can realize synchronous opening or synchronous closing of a plurality of exchange valves by only operating a push-pull rod so as to ensure accurate exchange and supply of the dry quenching coke oven gas, and can solve the technical problems that the sealing of the existing dry quenching coke oven gas exchange device is easy to fail and the gas overflows and leaks.

The technical scheme of the utility model is as follows: the gas exchange device of the coke dry quenching furnace consists of a main valve with a shaft and a shaft end seal, a pneumatic head, a reversing valve, a bracket, a moving rod, a gas pipe and the like; the pneumatic head is installed at the end of the main valve shaft, the bracket is fixedly connected to the tail end of the main valve body, the reversing valve is installed on the bracket, the moving rod is installed on the reversing valve, a long chute is designed on the moving rod, the air source compressed air is connected with the air inlet in the reversing valve through an air pipe, the reversing valve is connected with the corresponding air pipe joint of the pneumatic head through an air pipe, and the pin on the push-pull rod is inserted into the long chute of the moving rod.

When the exchange device is required to be controlled, the push-pull rod is operated according to a standard process program, the pin on the push-pull rod drives the carrying rod, and the carrying rod controls the valve position of the reversing valve, so that the compressed air of the air source is controlled to enter and exit the pneumatic head according to the process program, and the pneumatic head can drive the main valve to perform corresponding opening and closing actions; the carrying rods of the factor sleeve exchange device are connected to the same push-pull rod through pins, so that a plurality of exchange devices can be synchronously opened or synchronously closed, and accurate exchange and supply of the coke dry quenching coke oven gas can be ensured; and because the main valve of the exchange device adopts a reliable sealing mode with shaft end sealing, the technical problem of gas overflow leakage is completely solved.

Drawings

Fig. 1 is a schematic view of the structural principle of the present utility model.

1. Pneumatic head 2, main valve 3, push-pull rod 4, pin 5, moving rod 6, reversing valve 7 and bracket

Detailed Description

Fig. 1 shows an embodiment of a gas exchange device of a coke dry quenching furnace, wherein a main valve 2 of the device is provided with a valve with a shaft and a sealed shaft end, a pneumatic head 1 is connected and installed on the shaft of the main valve 2, a bracket 7 is fixedly connected with the tail end of a valve body of the main valve 2, a reversing valve 6 is installed on the bracket 7, a moving rod 5 is installed on the reversing valve 6, a long chute is designed on the moving rod 5, a pin 4 on a push-pull rod 3 is inserted into the long chute on the moving rod 5, air source compressed air is connected into an air inlet in the reversing valve 6 through an air pipe, and then the reversing valve 6 is connected with a corresponding air pipe joint of the pneumatic head 1 through an air pipe.

When the exchange device is required to be controlled, the push-pull rod 3 is operated according to a standard process program, the pin 4 on the push-pull rod 3 drives the carrying rod 5, and the carrying rod 5 controls the valve position of the reversing valve 6, so that the compressed air of the air source is controlled to enter and exit the pneumatic head 1 according to the process program, at the moment, the pneumatic head 1 drives the main valve 2 to perform corresponding opening and closing actions, and the carrying rod 5 of the factor sleeve exchange device is connected to the same push-pull rod 3 by the pin 4, so that the synchronous opening or synchronous closing of a plurality of exchange devices can be realized, and the accurate exchange supply of the dry quenching coke oven gas can be ensured; and because the main valve 2 of the exchange device adopts a reliable sealing mode with shaft end sealing, the technical problem of gas overflow leakage is completely solved.

Claims

1. The utility model provides a dry quenching coke oven gas exchange device, this device comprises main valve, pneumatic head, support, switching-over valve, carrier bar and trachea that are provided with valve shaft and axle head seal, its characterized in that: the main valve of the device is opened and closed by an air source compressed air control pneumatic head, and the valve position of the reversing valve is driven and controlled by a push-pull rod and a pin.

2. The dry quenching coke oven gas exchange device of claim 1, wherein: the bracket is fixedly connected with the tail end of the main valve body.

3. The dry quenching coke oven gas exchange device of claim 1, wherein: the reversing valve is arranged on the bracket.

4. The dry quenching coke oven gas exchange device of claim 1, wherein: the carrying rod is arranged on the reversing valve.

5. The dry quenching coke oven gas exchange device of claim 1, wherein: the pneumatic head is mounted on the main valve shaft.

6. The dry quenching coke oven gas exchange device of claim 1, wherein: air source compressed air is connected into the air inlet of the reversing valve through an air pipe.

7. The dry quenching coke oven gas exchange device of claim 1, wherein: the pneumatic head is connected with the corresponding air pipe joint of the reversing valve through an air pipe.

8. The dry quenching coke oven gas exchange device of claim 1, wherein: the carrying rod is provided with a long chute.

9. The dry quenching coke oven gas exchange device of claim 1, wherein: the pin on the push-pull rod is inserted into the long chute on the carrying rod.