CN212251188U

CN212251188U - Butterfly valve for coke oven gas conveying pipeline

Info

Publication number: CN212251188U
Application number: CN202020882454.7U
Authority: CN
Inventors: 贺泯乾; 王涛; 郭凯旋; 李宝霖
Original assignee: Inner Mongolia Sanjujiajing New Energy Co ltd
Current assignee: Inner Mongolia Sanjujiajing New Energy Co ltd
Priority date: 2020-05-22
Filing date: 2020-05-22
Publication date: 2020-12-29
Anticipated expiration: 2030-05-22

Abstract

The utility model discloses a butterfly valve for coke oven gas conveying pipeline, which comprises a valve body, a valve plate, an opening and closing device, an upper valve rod and a lower valve rod, wherein a cavity is arranged inside the valve plate, two channels which are vertically arranged along the axial direction are arranged on the upper valve rod, the top end of each channel is communicated with the side part of the upper valve rod outside the valve body, and the bottom end of each channel is communicated with the cavity; a radiating pipe is arranged in the cavity, and two ends of the radiating pipe respectively penetrate through the channel and are arranged on the outer side of the upper valve rod; an inlet control valve and an outlet control valve are respectively arranged at the two ends of the radiating pipe at the outer side of the upper valve rod. The advantages are that: when the valve is blocked, steam is introduced into the valve plate through the heating pipe, so that indirect heating is realized, and crystallization is easy to realize, and meanwhile, the steam can be sprayed into the valve body through the decontamination opening to realize direct scouring, dissolving and crystallization; the whole valve can solve the problem of blockage on line, the maintenance of a gas main pipe is not required to be cut off, the normal production is ensured, the maintenance cost is reduced, and the production cost is further reduced.

Description

Butterfly valve for coke oven gas conveying pipeline

The technical field is as follows:

the utility model relates to a liquefied natural gas production technical field, specific theory relates to a butterfly valve for coke oven gas pipeline.

Background art:

the liquefied natural gas production system from coke oven gas mainly comprises four working sections of compression, desulfurization, synthesis and liquefaction. In the compression section, coke oven gas conveyed by a pipeline is stored and buffered by a gas holder, pressurized to 0.41MPaG by a screw compressor and sent to a deoiling and decalcification tower and a rough desulfurization tower for primary purification of coke oven gas, and then pressurized to 2.8MPaG by a reciprocating compressor and sent to a desulfurization section for fine desulfurization of the coke oven gas. A large number of butterfly valves are needed on the coke oven gas conveying pipeline, but because the coke oven gas contains impurities such as tar, benzene, naphthalene and the like, the impurities are easy to crystallize at normal temperature, the impurities are easy to crystallize at a pipeline valve to cause valve blockage, a gas main pipe needs to be cut off for maintenance, the normal production efficiency is influenced, and the production cost is increased.

The utility model has the following contents:

an object of the utility model is to provide a be used for coke oven gas pipeline, conveniently clear up the jam, reduce the maintenance number of times, reduce natural gas manufacturing cost.

The utility model discloses by following technical scheme implement: a butterfly valve for a coke oven gas conveying pipeline comprises a valve body, a valve plate, an opening and closing device, an upper valve rod and a lower valve rod, wherein a cavity is formed in the valve plate, two channels which are vertically arranged along the axial direction are formed in the upper valve rod, the top ends of the channels are communicated with the side part of the upper valve rod outside the valve body, and the bottom ends of the channels are communicated with the cavity; a radiating pipe is arranged in the cavity, and two ends of the radiating pipe respectively penetrate through the channel and are arranged on the outer side of the upper valve rod; and an inlet control valve and an outlet control valve are respectively arranged at two ends of the radiating pipe outside the upper valve rod.

Furthermore, the upper portion of the valve body at the two ends of the valve plate is provided with a sewage cleaning port, and a sewage cleaning control valve is installed on the sewage cleaning port outside the valve body.

Further, the outlet end of the dirt cleaning port is obliquely arranged towards the valve plate.

The utility model has the advantages that: when the valve is blocked, steam is introduced into the valve plate through the heating pipe, so that indirect heating is realized, and crystallization is easy to realize, and meanwhile, the steam can be sprayed into the valve body through the decontamination opening to realize direct scouring, dissolving and crystallization; the whole valve can solve the problem of blockage on line, the maintenance of a gas main pipe is not required to be cut off, the normal production is ensured, the maintenance cost is reduced, and the production cost is further reduced.

Description of the drawings:

fig. 1 is a schematic view of the overall structure of the present invention.

The valve comprises a valve body 1, a valve plate 2, an opening and closing device 3, an upper valve rod 4, a lower valve rod 5, a cavity 6, a channel 7, a radiating pipe 8, an inlet control valve 9, an outlet control valve 10, a sewage cleaning port 11 and a sewage cleaning control valve 12.

The specific implementation mode is as follows:

in the description of the present invention, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, but does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, a butterfly valve for a coke oven gas conveying pipeline comprises a valve body 1, a valve plate 2, an opening and closing device 3, an upper valve rod 4 and a lower valve rod 5, wherein the valve body 1, the valve plate 2, the opening and closing device 3, the upper valve rod 4 and the lower valve rod 5 are known structures of the butterfly valve, namely, the valve plate 2 is installed inside the valve body 1, the upper valve rod 4 and the lower valve rod 5 which are rotatably connected with the valve body 1 are respectively fixed at the top and the bottom of the valve plate 2, the upper half part of the upper valve rod 4 is arranged outside the valve body 1, and the top end of the upper valve rod 4 is provided with the opening and closing device 3 which drives the upper valve; a cavity 6 is formed in the valve plate 2, two channels 7 which are vertically arranged along the axial direction are formed in the upper valve rod 4, the top ends of the channels 7 are communicated with the side part of the upper valve rod 4 outside the valve body 1, and the bottom ends of the channels 7 are communicated with the cavity 6; a radiating pipe 8 is arranged in the cavity 6, and two ends of the radiating pipe 8 respectively penetrate through the channels 7 and are arranged on the outer side of the upper valve rod 4; an inlet control valve 9 and an outlet control valve 10 are respectively arranged at the two ends of the radiating pipe 8 at the outer side of the upper valve rod 4; the two ends of the radiating pipe 8 are connected with a steam air source, steam enters the radiating pipe 8 through the inlet control valve 9, the heat of the steam is radiated into the cavity 6 through the radiating pipe 8, crystals around the valve plate 2 are heated and dissolved, the function of dredging the valve body is achieved, the problem of valve blockage can be solved on line, the maintenance of a gas main pipe is not required to be cut off, the normal production is ensured, the maintenance cost is reduced, and the production cost is further reduced; finally, the steam is discharged through the outlet control valve 10;

the upper parts of the valve bodies 1 at the two ends of the valve plate 2 are both provided with a sewage cleaning port 11, a sewage cleaning control valve 12 is arranged on the sewage cleaning port 11 outside the valve bodies 1, the sewage cleaning port 11 is connected with a steam air source through management, the sewage cleaning control valve 12 is opened, steam enters the valve bodies 1 through the sewage cleaning port 11, the valve bodies 1 at the two sides of the valve plate 2 are washed at high temperature, crystallization can be dissolved, and the butterfly valve dredging is further accelerated; the outlet end of the dirt cleaning port 11 is obliquely arranged towards the valve plate 2, and steam entering through the dirt cleaning port 11 directly scours the valve plate 2, so that the dissolution can be accelerated.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A butterfly valve for a coke oven gas conveying pipeline comprises a valve body, a valve plate, an opening and closing device, an upper valve rod and a lower valve rod, and is characterized in that a cavity is formed in the valve plate, two channels which are vertically arranged along the axial direction are formed in the upper valve rod, the top ends of the channels are communicated with the side portion of the upper valve rod outside the valve body, and the bottom ends of the channels are communicated with the cavity; a radiating pipe is arranged in the cavity, and two ends of the radiating pipe respectively penetrate through the channel and are arranged on the outer side of the upper valve rod; and an inlet control valve and an outlet control valve are respectively arranged at two ends of the radiating pipe outside the upper valve rod.

2. The butterfly valve for the coke oven gas conveying pipeline according to claim 1, wherein a decontamination opening is formed in the upper portion of the valve body at each of the two ends of the valve plate, and a decontamination control valve is mounted on the decontamination opening outside the valve body.

3. The butterfly valve for a coke oven gas conveying pipeline according to claim 2, wherein the outlet end of the purge port is inclined toward the valve plate.