Double-connecting-rod pressure regulating mechanism and coke oven gas collecting system

Abstract

The utility model relates to the technical field of coke oven gas collecting systems, and provides a double-connecting-rod pressure adjusting mechanism and a coke oven gas collecting system.The double-connecting-rod pressure adjusting mechanism comprises a first adjusting plate, a second adjusting plate, a semi-spherical shell valve seat, an adjusting plate shaft, connecting rods, a sliding rod and a driving device; the semi-spherical shell valve seat is fixed at the lower section in the axle tube; the semi-spherical shell valve seat is provided with a gas channel; an adjusting plate shaft is arranged on the upper edge of the semi-spherical shell valve seat and located in the diameter direction of the semi-spherical shell valve seat. A first adjusting plate and a second adjusting plate are respectively sleeved on the adjusting plate shaft; the outer end parts of the first adjusting plate and the second adjusting plate are respectively hinged with a connecting rod; the other end of the connecting rod is hinged to the lower end of the sliding rod. According to the utility model, the adjusting plate can change the area of the gas channel of the semi-spherical shell valve seat along with the change of the rotating angle, thereby realizing the plugging, opening and flow adjustment of the gas channel and further realizing the pressure adjustment of the carbonization chamber.

Description

Technical Field

[0001] The utility model relates to the technical field of coke oven gas collecting systems, in particular to a double-connecting rod pressure regulating mechanism and a coke oven gas collecting system. Background Art

[0002] The raw gas produced by coke oven coking is led to the gas purification workshop through the coke oven gas collection system. With the large-scale coke oven carbonization chamber, the carbonization chamber pressure regulation technology is an important technical means to ensure the stable production of the coke oven. The coke oven gas collection system includes riser, bridge pipe, gas collection pipe and other equipment. The bridge pipe is the connecting pipe between the riser and the gas collection pipe of each carbonization chamber. The pressure regulation of the carbonization chamber is to add a pressure regulating mechanism on the bridge pipe to ensure that the pressure of the carbonization chamber is always stable within the set range during a coking cycle.

[0003] The traditional bridge pipe is equipped with high-pressure ammonia water and circulating ammonia water nozzles. The coal in the carbonization chamber produces a large amount of high-temperature raw coal gas during the high-temperature carbonization process. The high-temperature raw coal gas is introduced into the bridge pipe through the riser. The high-temperature raw coal gas is cooled by spraying circulating ammonia water in the bridge pipe and introduced into the gas collecting pipe under the bridge pipe. Usually, each section of the gas collecting pipe is connected to 20 to 30 carbonization chambers, and the raw coal gas in the gas collecting pipe is pumped to the gas purification workshop for treatment through the suction pipe. The raw coal gas flow rate generated by each carbonization chamber changes with the coking process of the coal in the carbonization chamber. The traditional bridge pipe cannot change the raw coal gas flow state. If the pressure of the gas collecting pipe remains stable, the pressure of the carbonization chamber will fluctuate periodically. The setting and adjustment of the gas collecting pipe pressure must not only meet the smooth export of raw coal gas, but also take into account the pressure fluctuation in the carbonization chamber and the pressure in the range of 0 to 5Pa at the end of coking. The pressure regulation of the carbonization chamber is to change the resistance of the pressure regulating mechanism in the bridge pipe according to the change of the raw coal gas volume in the carbonization chamber, so as to ensure the stability of the pressure on both sides of the gas collecting pipe and the carbonization chamber under the condition of the change of the raw coal gas volume.

[0004] Therefore, coking enterprises urgently need a simple, flexible, accurate and economical regulation method. Under the condition of changing raw gas flow in the carbonization chamber, the gas flow state can be changed by the pressure regulating mechanism in the bridge pipe to meet the requirement of stable pressure in the carbonization chamber. Utility Model Content

[0005] The utility model mainly solves the technical problem of pressure fluctuation in the carbonization chamber caused by changes in the raw coal gas flow rate in each carbonization chamber, and proposes a double-link pressure regulating mechanism and a coke oven gas collecting system. The first regulating plate and the second regulating plate are rotated in the semi-spherical shell valve seat, so that the regulating plate changes the gas channel area of ​​the semi-spherical shell valve seat as the rotation angle changes, thereby realizing the blocking, opening and flow regulation of the gas channel, and further realizing the pressure regulation of the carbonization chamber.

[0006] The utility model provides a double-connecting rod pressure regulating mechanism, which is used to be installed in a bridge pipe;

[0007] The double-connecting rod pressure regulating mechanism comprises: a first regulating plate, a second regulating plate, a semi-spherical shell valve seat, a regulating plate shaft, a connecting rod, a sliding rod, and a driving device;

[0008] The semi-spherical shell valve seat is fixed to the lower section of the bridge pipe; a gas channel is arranged on the semi-spherical shell valve seat; an adjusting plate shaft is arranged on the upper edge of the semi-spherical shell valve seat, and the adjusting plate shaft is located in the diameter direction of the semi-spherical shell valve seat;

[0009] The first and second adjustment plates are respectively mounted on the adjustment plate shaft; the outer ends of the first and second adjustment plates are respectively hinged to connecting rods; the other end of the connecting rod is hingedly mounted on the lower end of the slide rod;

[0010] The slide bar passes through the tube wall of the bridge tube, and a driving device is installed on the upper end of the slide bar.

[0011] Preferably, the inner contour of the semi-spherical shell valve seat matches the semi-circular contour of the rotation of the first adjustment plate and the second adjustment plate; the first adjustment plate and the second adjustment plate rotate in the semi-spherical shell space of the semi-spherical shell valve seat.

[0012] Preferably, the semi-spherical shell valve seat is provided with a plurality of through holes as gas passages by cutting the bottom and / or the side wall.

[0013] Preferably, when the first adjustment plate and the second adjustment plate are both in a vertical position, the area of ​​the gas channel accounts for 50-70% of the area of ​​the semi-spherical shell valve seat; when the first adjustment plate and the second adjustment plate are both in a horizontal position, the semi-spherical shell gas channel is closed.

[0014] The area of ​​the gas channel is blocked as the first adjustment plate and the second adjustment plate rotate, and the rotation angle is linearly related to the blocked area.

[0015] Correspondingly, the utility model also provides a coke oven gas collection system, comprising: a riser, a bridge pipe and a gas collection pipe;

[0016] The double-link pressure regulating mechanism provided by any embodiment of the utility model is installed in the bridge tube;

[0017] The top of the bridge pipe serves as a raw gas inlet, and the bottom of the bridge pipe serves as a raw gas outlet;

[0018] The riser is communicated with the carbonization chamber, the raw gas inlet is communicated with the riser, and the raw gas outlet is communicated with the gas collecting pipe.

[0019] The utility model provides a double-link pressure regulating mechanism and a coke oven gas collecting system. The double-link pressure regulating mechanism combines the characteristics of compact arrangement between the riser, the bridge pipe and the gas collecting pipe, has a simple and compact structure, is embedded in the channel of the bridge pipe, and the driving device makes the slide rod perform linear reciprocating motion, and the lower end connecting rod of the slide rod drives the two adjusting plates to rotate in opposite directions around the axis. The first adjusting plate and the second adjusting plate rotate in the semi-spherical shell valve seat, and the adjusting plate changes the gas channel area of ​​the semi-spherical shell valve seat as the rotation angle changes, so as to achieve the purpose of blocking, opening and flow regulation of the gas channel, change the air flow resistance to achieve the purpose of regulating the carbonization chamber pressure, and meet the requirements of stable carbonization chamber pressure. The pressure of the carbonization chamber is flexibly regulated, with high regulation accuracy and large regulation range. There is a high linear relationship between the linear motion stroke of the slide rod of the utility model and the change of the gas channel area by the rotation of the first adjusting plate and the second adjusting plate, with a large regulation range, accurate regulation accuracy and high action sensitivity. The utility model is embedded in the bridge pipe, has a compact structure, and is easy to install and repair. The bridge pipe equipment installed in the utility model has the same size as the traditional bridge pipe, does not change the existing bridge pipe structure size, has good interchangeability with the original bridge pipe equipment, is suitable for coke oven technology transformation, and is particularly suitable for the replacement of coke oven bridge pipes that have been put into production. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of a bridge pipe equipped with the double-link pressure regulating mechanism of the utility model;

[0021] Figure 2 This is a structural diagram of the double-link pressure regulating mechanism provided by the utility model ( Figure 1 A-A sectional view);

[0022] Figure 3 yes Figure 2 B-B sectional view;

[0023] Figure 4 is a schematic diagram of the installation of the first adjustment plate and the adjustment plate shaft;

[0024] Figure 5 1 is a schematic diagram of the installation of the second adjustment plate and the adjustment plate shaft;

[0025] Figure 6 It is a schematic diagram of a semi-spherical shell valve seat;

[0026] Figure 7 is a schematic diagram of the first regulating plate and the semi-spherical shell valve seat;

[0027] Figure 8 It is a schematic diagram of the second regulating plate and the semi-spherical shell valve seat.

[0028] Figure numerals: 1. bridge pipe body; 2. first adjusting plate; 3. second adjusting plate; 4. semi-spherical shell valve seat; 5. adjusting plate shaft; 6. connecting rod; 7. sliding rod; 8. driving device. DETAILED DESCRIPTION

[0029] In order to make the technical problems solved by the present invention, the technical solutions adopted and the technical effects achieved clearer, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for the sake of ease of description, only the parts related to the present invention are shown in the accompanying drawings, rather than all of the contents.

[0030] Embodiment 1

[0031] like Figure 1 As shown, an embodiment of the utility model provides a double-connecting rod pressure regulating mechanism, which is used to be installed in the bridge tube 1, specifically in the channel of the bridge tube 1.

[0032] like Figure 2-5 As shown, the double-connecting rod pressure regulating mechanism includes: a first regulating plate 2, a second regulating plate 3, a semi-spherical shell valve seat 4, an regulating plate shaft 5, a connecting rod 6, a sliding rod 7, and a driving device 8.

[0033] The semi-spherical shell valve seat 4 is fixed in the lower section of the bridge pipe 1 ; a gas passage is arranged on the semi-spherical shell valve seat 4 ; an adjusting plate shaft 5 is arranged on the upper edge of the semi-spherical shell valve seat 4 , and the adjusting plate shaft 5 is located in the diameter direction of the semi-spherical shell valve seat 4 .

[0034] The first adjusting plate 2 and the second adjusting plate 3 are respectively mounted on the adjusting plate shaft 5 (the side where the radius is located is mounted on the adjusting plate shaft 5), and the first adjusting plate 2 and the second adjusting plate 3 can rotate around the adjusting plate shaft 5 in the semi-spherical shell valve seat 4; the outer ends of the first adjusting plate 2 and the second adjusting plate 3 are respectively hinged to the connecting rod 6; the other end of the connecting rod 6 is hingedly mounted on the lower end of the sliding rod 7; the sliding rod 7 passes through the pipe wall of the bridge pipe 1, and a driving device 8 is installed on the upper end of the sliding rod 7, and the driving device 8 enables the sliding rod 7 to perform linear reciprocating motion.

[0035] The inner contour of the semi-spherical shell valve seat 4 matches the semi-circular contour of the rotation of the first adjustment plate 2 and the second adjustment plate 3 ; the first adjustment plate 2 and the second adjustment plate 3 rotate in the semi-spherical shell space of the semi-spherical shell valve seat 4 .

[0036] like Figure 6As shown, the hemispherical shell valve seat 4 is provided with a plurality of through holes 10 as gas passages by cutting the bottom and / or the side wall. The hemispherical shell valve seat 4 is cut at the bottom to form a central hole 9. The plurality of through holes 10 can be distributed on both sides of the central hole 9, and the through holes 10 can be long strip holes. When the first adjustment plate and the second adjustment plate are both in a vertical position, the area of ​​the gas passage accounts for 50 to 70% of the area of ​​the hemispherical shell valve seat 4; when the first adjustment plate and the second adjustment plate are both in a horizontal position, the gas passage is closed.

[0037] like Figure 7-8 As shown, the gas channel area is blocked as the first adjustment plate 2 and the second adjustment plate 3 rotate, and the rotation angle is linearly related to the blocked area.

[0038] The working principle of the double-link pressure regulating mechanism of the utility model is as follows: when the driving device 8 makes the slide bar 7 perform linear motion, the two connecting rods 6 at the lower end of the slide bar 7 perform linear motion with the slide bar 7, and the other end of the connecting rod 6 drives the first adjusting plate 2 and the second adjusting plate 3 to rotate around the adjusting plate axis 5. The two connecting rods 6 drive the first adjusting plate 2 and the second adjusting plate 3 to rotate in the opposite direction and in the opposite direction respectively. The rotation of the first adjusting plate 2 and the second adjusting plate 3 causes relative displacement with the semi-spherical shell valve seat 4, and the gas passage (gas flow area) of the semi-spherical shell valve seat 4 is blocked, thereby realizing the blocking and opening of the gas passage on the semi-spherical shell valve seat 4. As the first adjusting plate 2 and the second adjusting plate 3 rotate, the blocked flow area of ​​the semi-spherical shell valve seat 4 changes, and the change in the rotation angle of the first adjusting plate 2 and the second adjusting plate 3 has a good proportional relationship with the change in the gas flow area of ​​the semi-spherical shell valve seat 4. By adjusting the rotation angle of the first adjustment plate 2 and the second adjustment plate 3, the passing area of ​​the gas channel can be adjusted, thereby adjusting the gas flow in the bridge pipe 1, achieving the purpose of adjusting the resistance of the raw coal gas passing through the bridge pipe 1, and then achieving the pressure regulation of the carbonization chamber to meet the requirement of stable pressure in the carbonization chamber. When the first adjustment plate 2 and the second adjustment plate 3 are rotated to the horizontal position (i.e., each rotated to the 90° position), the gas flow area of ​​the semi-spherical shell is completely closed.

[0039] Embodiment 2

[0040] This embodiment provides a coke oven gas collection system, including: a riser, a bridge pipe 1 and a gas collection pipe.

[0041] The double-connecting rod pressure regulating mechanism provided by any embodiment of the utility model is installed in the bridge pipe 1;

[0042] The top of the bridge pipe 1 serves as a raw gas inlet, and the bottom of the bridge pipe 1 serves as a raw gas outlet;

[0043] The riser is communicated with the carbonization chamber, the raw gas inlet is communicated with the riser, and the raw gas outlet is communicated with the gas collecting pipe.

[0044] The bridge pipe 1 can open and close the channel and adjust the gas flow. The first adjustment plate 2 and the second adjustment plate 3 rotate to change the airflow resistance to adjust the carbonization chamber pressure, thereby realizing the carbonization chamber pressure regulation and meeting the requirement of stable carbonization chamber pressure.

[0045] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that modifying the technical solutions recorded in the aforementioned embodiments, or replacing part or all of the technical features therein by equivalents, does not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A double-link pressure regulating mechanism, characterized in that: The double-link pressure regulating mechanism is used to be installed in a bridge pipe (1); The double-connecting rod pressure regulating mechanism comprises: a first regulating plate (2), a second regulating plate (3), a semi-spherical shell valve seat (4), an regulating plate shaft (5), a connecting rod (6), a sliding rod (7), and a driving device (8); The semi-spherical shell valve seat (4) is fixed to the lower section of the bridge pipe (1); a gas passage is arranged on the semi-spherical shell valve seat (4); an adjusting plate shaft (5) is arranged on the upper edge of the semi-spherical shell valve seat (4), and the adjusting plate shaft (5) is located in the diameter direction of the semi-spherical shell valve seat (4); The first adjustment plate (2) and the second adjustment plate (3) are respectively mounted on the adjustment plate shaft (5); the outer ends of the first adjustment plate (2) and the second adjustment plate (3) are respectively hinged to connecting rods (6); the other end of the connecting rod (6) is hingedly mounted on the lower end of the sliding rod (7); The slide bar (7) passes through the tube wall of the bridge tube (1), and a driving device (8) is installed on the upper end of the slide bar (7).

2. The double-link pressure regulating mechanism according to claim 1, characterized in that: The inner contour of the semi-spherical shell valve seat (4) matches the semi-circular contours of the first adjustment plate (2) and the second adjustment plate (3) that rotate; the first adjustment plate (2) and the second adjustment plate (3) rotate in the semi-spherical shell space of the semi-spherical shell valve seat (4).

3. The double-link pressure regulating mechanism according to claim 1, characterized in that: The semi-spherical shell valve seat (4) is provided with a plurality of through holes as gas passages by cutting the bottom and / or the side wall portion.

4. The double-link pressure regulating mechanism according to claim 3, characterized in that: When the first regulating plate and the second regulating plate are both in a vertical position, the area of ​​the gas passage occupies 50-70% of the area of ​​the semi-spherical shell valve seat (4); when the first regulating plate and the second regulating plate are both in a horizontal position, the semi-spherical shell gas passage is closed; The gas channel area is blocked as the first adjustment plate (2) and the second adjustment plate (3) rotate, and the rotation angle is linearly related to the blocked area.

5. A coke oven gas collection system, characterized in that: include: Riser, bridge pipe (1) and gas collecting pipe; The double-link pressure regulating mechanism according to any one of claims 1 to 4 is installed in the bridge pipe (1); The top of the bridge pipe (1) serves as a raw gas inlet, and the bottom of the bridge pipe (1) serves as a raw gas outlet; The riser is communicated with the carbonization chamber, the raw gas inlet is communicated with the riser, and the raw gas outlet is communicated with the gas collecting pipe.

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