Adjusting cock for coke oven gas pipeline

Abstract

The utility model discloses an adjusting cock for a coke oven gas pipeline, which is provided with a cock body, the upper part and the lower part of the cock body are access channels, a cock core is transversely arranged in the cock body, one end of the cock core is provided with a pressing block, the other end of the cock core is arranged to be a threaded head, and two double-end plates are also arranged, the two ends of the cock core are sleeved with the two double-end plates respectively, one double-end plate is arranged on the inner side of the pressing block, and the other double-end plate is arranged on the threaded head in a sleeving mode and locked through the locking nut. Two tensioning screw rods are further mounted between the two double-end plates, penetrate through the through holes in the two ends of the double-end plates respectively and are locked by using fastening nuts from the two ends; on the basis of an original adjusting cock, the local structure of the adjusting cock is improved, operation and use are more convenient and faster, the risks of basement gas leakage and basement operation safety are effectively reduced, the whole improvement measure is easy to implement, and the adjusting cock has good actual use and popularization value.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary parts and equipment for coking production, in particular to an adjusting cock used for a coke oven gas pipeline. Background Art

[0002] Coke ovens are the main equipment in coking production. They mainly use gas heating to distill coking coal into coke. Generally, coke ovens can use two types of gas for heating (blast furnace gas and coke oven gas), so they are equipped with two sets of gas heating systems: the blast furnace gas from the main pipe is distributed to two blast furnace gas mains on the machine and coke sides, and then supplied to the coke ovens through various branch pipes; the heating gas of the bottom-spraying coke oven is introduced from the external heating gas main pipe into a main pipe in the basement, and then distributed to each vertical fire channel through various branch pipes, horizontal pipes and vertical pipes.

[0003] In order to ensure the utilization and discharge of waste heat from coke oven exhaust gas, a double fire channel is adopted. The gas is exchanged every 30 minutes through the exchanger. The operation steps of the exchanger are three: turn off the gas → exchange the exhaust gas and air → send the gas. A gas gate valve is installed on the gas main and main pipe to adjust and cut off the gas supply of the whole furnace. Due to the deposition of tar residue and blast furnace ash, the gate valve is often not closed tightly. Therefore, when the gas is to be cut off for a long time, especially during maintenance, the blind plate must be blocked to ensure safety. The main pipe is equipped with an automatic gas flow adjustment flap to automatically maintain the specified value of the heating gas flow according to production needs. A gas flow orifice is installed on the main pipe and main pipe to measure the amount of gas entering the whole furnace or one side.

[0004] The main pipe fittings for coke oven gas inlet include regulating cock, orifice box, exchange cock, horizontal pipe, small orifice plate and vertical pipe. The regulating cock is used to adjust, cut off or connect the gas. The orifice box is used to install the orifice plate. Before installing or replacing the orifice plate, the regulating cock must be closed first. The exchange cock is connected to the exchange rod through the moving rod. During the exchange, the moving rod is driven by the rod to control the opening and closing of the cock.

[0005] In order to meet increasingly stringent environmental protection requirements, the factory has promoted ultra-low emission transformation and carried out desulfurization and denitrification treatment of coke oven flue gas. Due to the influence of the flue gas design air volume, the coke oven gas exchange is limited. At the same time, with the influence of blast furnace coke load and coke oven condition, the coke oven load is adjusted, and the coke oven gas regulating valve operates frequently. The fastening screws at the tail of several valves are damaged, and the gas cannot be stopped in time to replace the valve. At this time, it is easy to cause gas leakage in the basement and cause an alarm, which poses a great safety risk. Utility Model Content

[0006] The purpose of the utility model is to provide a regulating cock for a coke oven gas pipeline in view of the above situation. The regulating cock is an improved measure made on the original basis, making it more convenient and safe to use.

[0007] The specific scheme of the utility model is: a regulating cock for a coke oven gas pipeline, comprising a cock body, the cock body having inlet and outlet channels at the top and bottom, a cock core being horizontally arranged in the cock body, a pressure block being arranged at one end of the cock core, a threaded head being arranged at the other end of the cock core, and two double-headed plates being arranged, a circular hole being arranged at the center of the double-headed plate, a through hole being arranged at symmetrical positions at both ends of the double-headed plate, the two double-headed plates being respectively sleeved on the two end heads of the cock core, one of which being placed on the inner side of the pressure block, and the other being sleeved on the threaded head and locked by a locking nut; two tightening screws being arranged between the two double-headed plates, the two tightening screws respectively passing through the through holes at both ends of the double-headed plate and being locked by tightening nuts from both ends.

[0008] Furthermore, the middle part of the double-headed plate in the utility model is circular, the circular hole is arranged at the center of the circular part, and the thickness of the double-headed plate is 5 mm.

[0009] Furthermore, in the utility model, a sealing gasket is also provided on the inner side surface of the double-head plate, and the sealing gasket is sleeved at the two ends of the plug core.

[0010] Furthermore, the length of the tensioning screw in the utility model is 300 mm, and the diameter of the fastening nut thereon is 16 mm.

[0011] The utility model improves the local structure of the original regulating cock, making it more convenient to operate and use, effectively reducing the risks of basement gas leakage and basement operation safety, and the entire improvement measure is simple to implement, with good practical use and promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the main viewing direction structure of the utility model;

[0013] Figure 2 It is a schematic diagram of the structure of the utility model in a top view;

[0014] Figure 3 It is a schematic diagram of the structure of the utility model in a side view direction.

[0015] In the figure: 1—pressure block, 2—plug body, 3—inlet and outlet channel, 4—tension screw, 5—sealing gasket, 6—fastening nut, 7—double-head plate, 8—locking nut, 9—thread head. DETAILED DESCRIPTION

[0016] The following will be combined with the accompanying drawings of the utility model to clearly and completely describe the technical solution of the utility model. It is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the protection scope of the utility model. In the description of the utility model, it should be noted that the terms "upper", "lower", "inside", "outside" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when used, which is only for the convenience of describing the utility model or simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0017] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0018] See also Figure 1 to Figure 3 The utility model is a regulating cock for a coke oven gas pipeline, comprising a cock body 2, the cock body having inlet and outlet channels 3 above and below, one inlet and outlet channel above and one inlet and outlet channel below, a cock core being arranged transversely in the cock body, and being arranged inside the cock body, a pressure block 1 being arranged at one end of the cock core, a threaded head 9 being arranged at the other end of the cock core, and two double-headed plates 7 being arranged, a circular hole being arranged at the center of the double-headed plate, a through hole being arranged at symmetrical positions at both ends of the double-headed plate, the two double-headed plates being respectively mounted on the two end heads of the cock core, one of which being placed on the inner side of the pressure block, and the other double-headed plate being mounted on the threaded head and being locked by a locking nut 8; two tightening screws 4 being arranged between the two double-headed plates, the two tightening screws respectively passing through the through holes at both ends of the double-headed plate and being locked by tightening nuts 6 from both ends.

[0019] Furthermore, the middle part of the double-headed plate in the utility model is circular, the circular hole is arranged at the center of the circular part, and the thickness of the double-headed plate is 5 mm.

[0020] Furthermore, in the utility model, a sealing gasket 5 is also provided on the inner side of the double-head plate, and the sealing gasket is sleeved at the two ends of the plug core. Furthermore, in the utility model, the length of the tightening screw is 300 mm, and the tightening nut thereon is 16 mm in diameter.

[0021] The utility model is carried out as follows during actual implementation:

[0022] 1. Make two 5mm thick double-end plates according to the diameter of the coke oven gas cyclone;

[0023] 2. Select two pairs of 300mm tensioning screws and Φ16mm fastening nuts according to the relevant dimensions of the adjusting cock;

[0024] 3. Close the regulating cock, use the double-head plate as a pressure plate to tighten it from both ends of the cock core with locking nuts;

[0025] 4. Replace the intermediate gas short pipe between the regulating cock and the exchange cock with a 180mm×Φ80mm ball valve;

[0026] 5. Use a gas alarm to monitor and confirm that there is no gas leakage alarm in the surrounding area.

[0027] The utility model discloses the utility model is used in actual use, through the upper and lower tightening screws and the double-headed plates at both ends clamped and blocked with sealing washers, so that the sealing performance of the end heads of the adjusting cock is greatly improved; even if the locking nuts at both ends are rusted and damaged and difficult to rotate, the tightening screws can still be turned at the same time to turn the cock core to open and close, which is easy to operate and relatively convenient to replace later.

[0028] The utility model improves the local structure of the original regulating cock, making it more convenient to operate and use, effectively reducing the risks of basement gas leakage and basement operation safety, and the entire improvement measure is simple to implement, with good practical use and promotion value.

Claims

1. A regulating cock for a coke oven gas pipeline, comprising a cock body, the cock body having inlet and outlet channels on the upper and lower sides, a cock core being laterally mounted in the cock body, a pressure block being provided at one end of the cock core, and a threaded head being provided at the other end of the cock core, characterized in that: Two double-headed plates are also provided, a circular hole is provided at the center of the double-headed plates, and a through hole is provided at each of the two symmetrical positions at the two ends of the double-headed plates. The two double-headed plates are respectively mounted on the two end heads of the plug core, one of which is placed on the inner side of the pressure block, and the other double-headed plate is mounted on the threaded head and locked by a locking nut; two tightening screws are also installed between the two double-headed plates, and the two tightening screws pass through the through holes at both ends of the double-headed plates respectively and are locked from both ends using tightening nuts.

2. The regulating cock for a coke oven gas pipeline according to claim 1, characterized in that: The middle part of the double-end plate is circular, the circular hole is arranged at the center of the circular part, and the thickness of the double-end plate is 5 mm.

3. The regulating cock for a coke oven gas pipeline according to claim 1, characterized in that: A sealing gasket is also arranged on the inner side surface of the double-end plate, and the sealing gasket is sleeved on the two ends of the plug core.

4. The regulating cock for a coke oven gas pipeline according to claim 1, characterized in that: The length of the tightening screw is 300 mm, and the diameter of the tightening nut thereon is 16 mm.

Images