CN213680531U - Coke oven door pressure measuring device with automatic back flushing function - Google Patents
Coke oven door pressure measuring device with automatic back flushing function Download PDFInfo
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- CN213680531U CN213680531U CN202022660902.1U CN202022660902U CN213680531U CN 213680531 U CN213680531 U CN 213680531U CN 202022660902 U CN202022660902 U CN 202022660902U CN 213680531 U CN213680531 U CN 213680531U
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Abstract
The utility model discloses a coke oven furnace door pressure measuring device with automatic back flushing, relating to the technical field of coke oven thermal measurement. The coke oven door pressure measuring device with the automatic back flushing function comprises a pressure measuring main pipe, wherein a ball valve is arranged at the right end of the pressure measuring main pipe, and a pressure guide branch pipe is arranged at the top of the pressure measuring main pipe. This take automatic coke oven furnace gate pressure measuring device of blowback, through designing the automatic blowback device of piezometer pipe to and adopt pressure transmitter to measure carbonization chamber bottom pressure, make the piezometer pipe keep clean unblocked automatically in whole pressure measurement process, the accuracy of the carbonization chamber bottom pressure data of having improved continuous on-line measurement, the device has automatic blowback function simultaneously, can be continuous, accurately whole journey automatic measurement carbonization chamber bottom pressure, for rationally confirming coke oven discharge pressure and set for providing accurate data support, with the automation level that improves coke oven thermal engineering measurement, reduce workman intensity of labour by a wide margin, improve labor efficiency.
Description
Technical Field
The utility model relates to a coke oven thermal technology measurement technical field specifically is a coke oven furnace gate pressure measurement device of automatic blowback in area.
Background
The measurement of the pressure at the bottom of the coke oven carbonization chamber is an important work content of the thermal regulation of the coke oven and is an important basis for determining the pressure of the gas collecting pipe. When the pressure of the gas collecting pipe is overlarge, a furnace door and a furnace cover are ignited by smoking, the operation environment is deteriorated, raw coke oven gas is lost, furnace protection equipment is burnt out, and the service life of a furnace body is shortened; when the pressure of the gas collecting pipe is smaller, air and waste gas enter the carbonization chamber, so that coke in the furnace is burnt to generate local high temperature, graphite among brick joints of the furnace wall is burnt to cause gas leakage, and normal heating is damaged. Therefore, the pressure at the bottom of the carbonization chamber must be measured in time according to relevant technical regulations to determine whether the set value of the pressure of the gas collecting pipe is reasonable. The bottom pressure measurement of the carbonization chamber at present has the following problems:
(1) the instrument used for measuring the pressure at the bottom of the carbonization chamber is mainly a U-shaped meter and an inclined micro-manometer, and a plurality of persons are required to simultaneously read the pressure of the gas collecting tube and the pressure at the bottom of the carbonization chamber during measurement, so that the accuracy of measurement and recording can be influenced by the response speed, vision difference and the like of the persons.
(2) Because tar, naphthalene and vapor in the raw gas can deposit in the pressure measuring pipe, cause the pressure measuring pipe jam, the survey crew need regularly dredge the pressure measuring pipe with the iron wire.
The above conditions not only cause the large labor intensity of the measurement work, but also have low measurement accuracy and low working efficiency;
in addition, the traditional measuring method can not continuously and online measure the pressure in the whole coking period in real time in the whole process, and the pressure change condition of the coking chamber in the whole coking period can not be mastered.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
The utility model is not enough to prior art, the utility model provides a coke oven furnace gate pressure measurement device of automatic blowback in area, the instrument that has solved carbonization room bottom pressure measurement and use is U type table and oblique type micromanometer mainly, need many people to carry out the reading simultaneously to gas collecting pipe pressure and carbonization room bottom pressure during the measurement, consequently, the accuracy of measurement record can be because of people's reaction speed, eyesight difference etc. receive the influence, simultaneously because tar in the raw coke oven gas, naphthalene and vapor can deposit in the piezometer, cause the piezometer jam, the measuring staff need regularly dredge the piezometer with the iron wire, in addition, traditional measuring method can not carry out whole real-time measurement to the pressure in the whole coking cycle on line in succession, the problem of the pressure variation condition of carbonization room pressure in whole coking cycle can not mastered.
(II) technical scheme
In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: the utility model provides a coke oven furnace gate pressure measurement device of automatic blowback in area, is responsible for including the pressure measurement, the right-hand member that the pressure measurement was responsible for is provided with the ball valve, the top that the pressure measurement was responsible for is provided with the induced pressure branch pipe, the top intercommunication of induced pressure branch pipe has the branch pipe that sweeps, it is provided with second solenoid valve and quick-operation joint on the branch pipe to sweep, be provided with first solenoid valve on the induced pressure branch pipe, the top of induced pressure branch pipe is provided with pressure transmitter, the pressure measurement is responsible for and is provided with the closing plate, the top and the bottom of closing.
Preferably, the front end of the pressure measuring main pipe is arc-shaped, the arc-shaped bending degree is based on that the front end of the pressure measuring main pipe is 15-20 mm away from the furnace wall of the carbonization chamber, the front end opening is parallel to the furnace wall of the carbonization chamber, and the length of the pressure measuring main pipe is based on that the front half of the pressure measuring pipe extends into the carbonization chamber by 500-600 mm.
Preferably, the sealing plate is arranged at the middle rear part of the pressure measuring main pipe, and the pressure guiding branch pipe is arranged at the rear part of the pressure measuring main pipe and is perpendicular to the pressure measuring main pipe.
Preferably, the first electromagnetic valve is used for communicating or cutting off the pipeline communication between the pressure guide branch pipe and the pressure transmitter.
Preferably, the purging branch pipe is connected with the pressure guiding branch pipe in a vertical 90-degree mode, and the second electromagnetic valve is used for communicating or cutting off the pipeline connection of the nitrogen main pipe, the pressure guiding branch pipe and the pressure measuring main pipe.
(III) advantageous effects
The utility model provides a coke oven door pressure measuring device with automatic back flushing. The method has the following beneficial effects: this take automatic coke oven furnace gate pressure measuring device of blowback, through designing the automatic blowback device of piezometer pipe to and adopt pressure transmitter to measure carbonization chamber bottom pressure, make the piezometer pipe keep clean unblocked automatically in whole pressure measurement process, the accuracy of the carbonization chamber bottom pressure data of having improved continuous on-line measurement, the device has automatic blowback function simultaneously, can be continuous, accurately whole journey automatic measurement carbonization chamber bottom pressure, for rationally confirming coke oven discharge pressure and set for providing accurate data support, with the automation level that improves coke oven thermal engineering measurement, reduce workman intensity of labour by a wide margin, improve labor efficiency.
Drawings
FIG. 1 is a side view of the furnace door pressure measuring device of the present invention;
FIG. 2 is a top view of the pressure measurement main pipe of the present invention;
fig. 3 is a schematic diagram of the pressure signal transmission and blowback control principle of the furnace door pressure measuring device of the present invention.
In the figure: 1. a pressure measuring main pipe; 12. a sealing plate; 13. a bolt through hole; 14. a ball valve; 2. pressure-leading branch pipes; 21. a first solenoid valve; 3. purging the branch pipe; 31. a second solenoid valve; 32. a quick coupling; 4. a pressure transmitter.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Referring to fig. 1-3, the present invention provides a technical solution: a coke oven door pressure measuring device with automatic back flushing comprises a pressure measuring main pipe 1, wherein the front end of the pressure measuring main pipe 1 is arc-shaped, the curvature of the arc is based on that the front end opening of the pressure measuring main pipe is 15-20 mm away from the oven wall of a carbonization chamber, the front end opening is parallel to the oven wall of the carbonization chamber, the length of the pressure measuring main pipe 1 is based on that the front half part of the pressure measuring pipe extends into the carbonization chamber by 500-600 mm, the right end of the pressure measuring main pipe 1 is provided with a ball valve 14, the top of the pressure measuring main pipe 1 is provided with a pressure leading branch pipe 2, the top end of the pressure leading branch pipe 2 is communicated with a purging branch pipe 3, the purging branch pipe 3 is connected with the pressure leading branch pipe 2 at a vertical angle of 90 degrees, a second electromagnetic valve 31 is used for communicating or cutting off the pipeline communication between the nitrogen main pipe and the pressure leading branch pipe 2 and the pressure measuring main pipe 1, the purging branch pipe 3 is provided with a second electromagnetic valve 31 and, the top of the pressure guiding branch pipe 2 is provided with a pressure transmitter 4, the pressure measuring main pipe 1 is provided with a sealing plate 12, the sealing plate 12 is arranged at the middle rear part of the pressure measuring main pipe 1, the pressure guiding branch pipe 2 is arranged at the rear part of the pressure measuring main pipe 1 and is perpendicular to the pressure measuring main pipe 1, and the top and the bottom of the sealing plate 12 are provided with bolt through holes 13.
This furnace gate pressure measurement device comprises pressure measurement main pipe 1, pressure branch pipe 2, branch pipe 3 that sweeps, first solenoid valve 21, second solenoid valve 31, pressure transmitter 4, DCS system, HMI host computer and printer.
The following description is made with reference to fig. 1 and 2: the front end of the pressure measuring main pipe 1 is arc-shaped, the bending degree of the arc is based on that the front end opening of the pressure measuring main pipe is 15-20 mm away from the furnace wall of the carbonization chamber, and the front end opening is parallel to the furnace wall of the carbonization chamber; the length of the pressure measuring main pipe 1 is based on that the front half of the pressure measuring pipe extends into the carbonization chamber by 500-600 mm. A sealing plate 12 is arranged at the middle rear part of the pressure measuring main pipe 1; the rear part of the pressure measuring main pipe 1 is provided with a pressure guiding branch pipe 2 which is vertical to the pressure measuring main pipe 1 by 90 degrees, the upper end of the pressure guiding branch pipe 2 is provided with a first electromagnetic valve 21 and a pressure transmitter 4, and the first electromagnetic valve 21 is used for communicating or cutting off the pipeline connection between the pressure guiding branch pipe 2 and the pressure transmitter 4; the lower part of the pressure leading branch pipe 2 is provided with a purging branch pipe 3, the purging branch pipe 3 is connected with the pressure leading branch pipe 2 in a vertical 90-degree manner, a second electromagnetic valve 31 is arranged on the purging branch pipe 3, the second electromagnetic valve 31 is used for communicating or cutting off the pipeline connection of the nitrogen main pipe, the pressure leading branch pipe 2 and the pressure measuring main pipe 1, the tail end of the purging branch pipe 3 is provided with a quick joint 32, and the quick joint 32 is connected with a metal hose on the nitrogen main pipe; the power line and the signal line used by the device are connected with the pressure transmitter 4, the first electromagnetic valve 21 and the second electromagnetic valve 31 by wiring from the corridor of the regenerator through the coke baffle along the furnace column.
The following is further explained with reference to fig. 1 and 2: the sealing plate 12 is a round steel plate, the outer diameter of the sealing plate is the same as the diameter of a furnace door pressure measuring hole plugging plate, a round hole penetrating through the pressure measuring main pipe 1 is formed in the center of the sealing plate, the round hole in the center of the sealing plate 12 is tightly welded with the pressure measuring main pipe 1 through electric welding, the sealing plate 12 is provided with bolt through holes 13 with the same interval as the furnace door pressure measuring hole plugging plate, and a rubber asbestos plate is arranged between the sealing plate and the furnace door pressure measuring; after the pressure measuring main pipe 1 is inserted into a pressure measuring hole of the furnace door, the pressure measuring main pipe 1 is fixed on the furnace door by bolts through bolt through holes 13 of a sealing plate 12.
A ball valve 14 is arranged at the rear end part of the pressure measuring main pipe 1, and after the carbonization chamber is charged with coal, the coal in the front end opening of the pressure measuring main pipe 1 is removed by an iron wire which is inserted from the ball valve 14 in advance.
The nitrogen blowback operation principle, i.e., the logic processing of the DCS system, will be described with reference to fig. 3.
The medium used for nitrogen purging is nitrogen, the pressure of nitrogen purging is 0.5-0.6 MPa, purging is performed for 1 time every 1 hour after pressure measurement begins, and the continuous purging time is 20-30 seconds every time.
Normal pressure measurement operating condition: the first solenoid valve 21 is opened and the second solenoid valve 31 is closed.
And in a nitrogen back-blowing state: when the back flushing starts, the first electromagnetic valve 21 is closed firstly to prevent the pressure transmitter 4 from being damaged; then, opening the second electromagnetic valve 31 for back flushing; and when the back blowing is finished, the second electromagnetic valve 31 is closed, then the first electromagnetic valve 21 is opened, and the normal pressure measurement at the bottom of the carbonization chamber is carried out.
The principle of continuous online automatic measurement of the bottom pressure of the carbonization chamber is explained with reference to FIG. 3
The pressure transmitter 4 installed on the furnace door pressure measuring pipe transmits collected pressure signals to the DCS in a standard 4-20 mA current signal mode through a signal line, the DCS transmits the received pressure data to the HMI upper computer of the centralized control room, and the HMI upper computer displays the pressure data and the curve measured on site in real time and can read, compare and print the pressure data and the curve of the gas collecting pipe of the HMI upper computer.
After the furnace door is aligned and before the carbonization chamber is charged with coal, firstly, removing a blocking plate of a pressure measuring hole of the furnace door, inserting the front end of a pressure measuring main pipe 1 of the pressure measuring device into the carbonization chamber from the pressure measuring hole of the furnace door, fixing the pressure measuring main pipe 1 on the furnace door by using bolts and nuts through bolt through holes 13 on a sealing plate 12, and connecting a power line and a signal line of a pressure transmitter 4 and power lines of a first electromagnetic valve 21 and a second electromagnetic valve 31; connecting the purging branch pipe 3 with a nitrogen main pipe through a quick connector 32; after the preparation of the work is finished, the coal charging car is informed to start to discharge coal, after the coal charging and the ascending pipe system are recovered to be normal, the iron wire inserted into the pressure measuring main pipe 1 from the ball valve 14 in advance is used for removing the coal in the front end opening of the pressure measuring main pipe 1, the iron wire is pulled out, the quick ball valve 14 is closed, and then the continuous online automatic pressure measuring and automatic reverse purging control program of the furnace door pressure measuring device can be started until the whole pressure measuring work is finished.
Characteristic of the application
The technical characteristics are that: the pressure transmitter 4 is arranged for pressure measurement of the furnace door, pressure data measured on site are transmitted to the centralized control room through the signal wire, the traditional method of manually measuring and recording by using a U-shaped meter and an inclined micro-pressure meter is replaced, the bottom pressure of the carbonization chamber is automatically measured continuously and on line in the whole process, the accuracy of the data is improved, and the labor intensity of workers is reduced.
The technical characteristics are as follows: the automatic back-blowing system is arranged for pressure measurement of the furnace door, the pressure measurement pipe can be prevented from being blocked by tar, naphthalene and other impurities, the pressure measurement pipe is automatically kept clean and smooth, the accuracy of pressure measurement is improved, manual regular cleaning work is replaced, and the labor intensity of workers is reduced.
Technical characteristics 3: the furnace door pressure measuring device is provided with the sealing plate 12, the pressure measuring device can be fixed on the furnace door by bolts, manual fixation is not needed in the coal charging process, the labor intensity of workers is reduced, and the tightness of the pressure measuring device is improved.
In summary, the coke oven door pressure measuring device with automatic back flushing has the advantages that the automatic back flushing device of the pressure measuring tube is designed, the pressure measuring tube is used for measuring the bottom pressure of the carbonization chamber, the pressure measuring tube is enabled to automatically keep clean and smooth in the whole pressure measuring process, the accuracy of continuous online measurement of the bottom pressure data of the carbonization chamber is improved, meanwhile, the device has the automatic back flushing function, the bottom pressure of the carbonization chamber can be continuously and accurately and automatically measured in the whole process, accurate data support is provided for reasonably determining the pressure setting of the coke oven gas collecting tube, the automation level of thermal measurement of the coke oven is improved, the labor intensity of workers is greatly reduced, and the labor efficiency is improved.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (5)
1. The utility model provides a coke oven furnace gate pressure measurement device of automatic blowback in area which characterized in that: be responsible for (1) including the pressure measurement, the right-hand member that the pressure measurement was responsible for (1) is provided with ball valve (14), the top that the pressure measurement was responsible for (1) is provided with induced pressure branch pipe (2), the top intercommunication of induced pressure branch pipe (2) has branch pipe (3) of sweeping, it is provided with second solenoid valve (31) and quick-operation joint (32) on branch pipe (3) to sweep, be provided with first solenoid valve (21) on induced pressure branch pipe (2), the top of induced pressure branch pipe (2) is provided with pressure transmitter (4), be provided with closing plate (12) on the pressure measurement is responsible for (1), the top and the bottom of closing plate (12) all are provided with bolt through-hole (13).
2. The coke oven door pressure measuring device with the automatic back flushing function as claimed in claim 1, wherein: the front end that the pressure measurement was responsible for (1) is the arc, and the curved crookedness uses the pressure measurement to be responsible for the front end mouth apart from 15 ~ 20mm as the basis for the carbomorphism room furnace wall, and the front end opening is parallel with carbomorphism room furnace wall, and the length that the pressure measurement was responsible for (1) is based on that the preceding half of pressure measurement pipe stretches into carbomorphism room 500 ~ 600 mm.
3. The coke oven door pressure measuring device with the automatic back flushing function as claimed in claim 1, wherein: the sealing plate (12) is arranged at the middle rear part of the pressure measuring main pipe (1), and the pressure guiding branch pipe (2) is arranged at the rear part of the pressure measuring main pipe (1) and is perpendicular to the pressure measuring main pipe (1).
4. The coke oven door pressure measuring device with the automatic back flushing function as claimed in claim 1, wherein: the first electromagnetic valve (21) is used for communicating or cutting off the pipeline communication between the pressure leading branch pipe (2) and the pressure transmitter (4).
5. The coke oven door pressure measuring device with the automatic back flushing function as claimed in claim 1, wherein: the purging branch pipe (3) is connected with the pressure guiding branch pipe (2) in a vertical 90-degree mode, and the second electromagnetic valve (31) is used for communicating or cutting off the pipeline connection of the nitrogen main pipe, the pressure guiding branch pipe (2) and the pressure measuring main pipe (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022660902.1U CN213680531U (en) | 2020-11-17 | 2020-11-17 | Coke oven door pressure measuring device with automatic back flushing function |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202022660902.1U CN213680531U (en) | 2020-11-17 | 2020-11-17 | Coke oven door pressure measuring device with automatic back flushing function |
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| CN213680531U true CN213680531U (en) | 2021-07-13 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041373A1 (en) * | 2022-08-26 | 2024-02-29 | 江苏微导纳米科技股份有限公司 | Gas pressure measurement device and deposition apparatus |
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- 2020-11-17 CN CN202022660902.1U patent/CN213680531U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024041373A1 (en) * | 2022-08-26 | 2024-02-29 | 江苏微导纳米科技股份有限公司 | Gas pressure measurement device and deposition apparatus |
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