CN116064056A

CN116064056A - Piston device for regulating liquid discharge

Info

Publication number: CN116064056A
Application number: CN202111278777.0A
Authority: CN
Inventors: 陆建宁; 徐守国; 王雅伦; 陈�胜
Original assignee: Nanjing Huadian Energy Saving And Environmental Protection Co ltd
Current assignee: Nanjing Huadian Energy Saving And Environmental Protection Co ltd
Priority date: 2021-10-31
Filing date: 2021-10-31
Publication date: 2023-05-05

Abstract

The invention discloses a piston device for regulating liquid discharge, which comprises an inner piston device at the bottom, a piston connecting rod at the middle part and a piston regulating cylinder at the top; the inner piston device comprises a piston head, an inner piston and an inner piston sleeve, the inner piston sleeve is sleeved outside the inner piston, a piston connecting rod penetrates through the top of the inner piston sleeve and is fixedly connected with the inner piston, the lower end of the inner piston sleeve is fixedly connected with the piston head, a circle of continuous horizontal protrusions are arranged on the inner wall of the inner piston sleeve, and through holes are formed in the side wall of the inner piston sleeve above the protrusions; the lower extreme of piston head and piston interior sleeve pipe all is equipped with the opening, and the outer wall and the bellied round lateral wall in interior piston in close contact to can slide from top to bottom under the drive of piston connecting rod, the inside of interior piston can make liquid pass through. The device can seal and slowly or quickly release liquid and adjust air pressure; the integrated design can eliminate the falling-off phenomenon of the piston executing mechanism in operation, reduce equipment faults and facilitate the maintenance of later monotone equipment.

Description

Piston device for regulating liquid discharge

Technical Field

The invention belongs to the technical field of coke oven single carbonization chamber raw gas pressure regulating piston devices, and particularly relates to a piston device for discharging liquid, which can be used for online upgrading of a coke oven and pressure regulation of single carbonization chamber raw gas of a newly built coke oven.

Background

Coke ovens, a type of oven typically built from refractory bricks and blocks, are used to coalize coal to produce coke. The kiln for refining coke by using coal is a main thermal equipment for coking. The modern coke oven is a horizontal chamber type coke oven which is mainly used for producing metallurgical coke and can recycle coking chemical products, and consists of an oven body and auxiliary equipment. The coke oven body is composed of furnace top, combustion chamber, charring chamber, chute area, regenerator, etc. and is connected with chimney through flue. Modern coke ovens are generally identical in basic structure, but can be divided into many types due to the different modes of charging coal, heating and fuel used.

The control of the raw gas pressure of the single carbonization chamber of the coke oven which is operated on line is mainly realized by the pressure regulation of a sectional gas collecting pipe. In the production of coke ovens, the pressure fluctuation of raw gas in a single carbonization chamber is easily caused due to different production states of each carbonization chamber. In the initial stage of coal loading and coking, the raw gas generation amount is large, and excessive pressure of the raw gas at the bottom of the coking chamber can cause the raw gas to leak from a plurality of positions such as a coal loading hole, a furnace wall, a furnace door, a furnace body and the like of the coke oven, thereby causing atmospheric environmental pollution; at the end of coking, the raw gas generation amount is small, the raw gas negative pressure is easy to form at the bottom of the coking chamber, and air is leaked into the coking chamber, so that coke burning loss and furnace body damage are caused.

Therefore, according to the running characteristics of the coke oven, the raw gas pressure regulating device capable of being connected with the single carbonization chamber and the valve core structure of the raw gas pressure regulating device of the single carbonization chamber, which can be used for online upgrading of the coke oven and new coke oven, are developed, so that the problem of pressure fluctuation of the raw gas in the single carbonization chamber is solved, and the raw gas pressure regulating device is worthy of further research.

Disclosure of Invention

The invention aims to: aiming at the defects of the prior art, the invention provides a piston device which can be used for on-line upgrading of a coke oven and pressure adjustment of raw gas in a single carbonization chamber of a newly built coke oven.

The technical scheme is as follows: in order to achieve the above purpose, the invention adopts the following technical scheme:

a piston device for adjusting liquid discharge comprises a bottom inner piston device, a middle piston connecting rod and a top piston adjusting cylinder; the inner piston device comprises a piston head, an inner piston and an inner piston sleeve, the inner piston is sleeved with the inner piston sleeve, a piston connecting rod penetrates through the top of the inner piston sleeve and is fixedly connected with the inner piston, the lower end of the inner piston sleeve is fixedly connected with the piston head, a circle of continuous horizontal protrusions are arranged on the inner wall of the inner piston sleeve, and through holes are formed in the side wall of the inner piston sleeve above the protrusions; the lower extreme of piston head and piston interior sleeve pipe all is equipped with the opening, and the outer wall and the bellied round lateral wall in interior piston in close contact to can slide from top to bottom under the drive of piston connecting rod, the inside of interior piston can make liquid pass through.

Preferably, the upper end of the inner piston sleeve is sleeved with an outer piston sleeve, the top end of the inner piston sleeve is fixedly and hermetically connected with the top end of the outer piston sleeve, a gap is reserved between the side walls of the inner sleeve and the outer sleeve, and the lower end of the outer piston sleeve is opened.

Further preferably, the top end of the inner piston sleeve and the top end of the outer piston sleeve are fixedly and hermetically connected through a sealing cover, and the piston connecting rod penetrates through the sealing cover.

Further preferably, the protrusion is located higher than the lower end opening of the piston outer sleeve.

Preferably, a connecting block is fixed on the inner wall of the inner piston, the piston connecting rod is fixedly connected with the inner piston through the connecting block, and a gap for liquid to pass through is reserved between the connecting block and the inner wall of the inner piston.

Preferably, the top and the bottom of the inner piston are both in an open state, or one is in an open state, and the other is in an open state.

Preferably, the through holes are strip-shaped through holes with the same upper and lower widths, or strip-shaped open holes with the widths gradually increased from top to bottom, and the through holes are uniformly distributed on the side wall of the inner sleeve of the piston. The width gradually increases from top to bottom, which means that the width can be changed in a gradient manner, each gradient can adopt a trapezoid structure (trapezoid vertical bar-shaped opening) with inclined sides, a rectangle structure (trapezoid vertical bar-shaped opening) with consistent vertical width on the sides, or the width can be randomly changed, or the whole opening is in a thin inverted V-shaped shape, and the like, so long as the purpose that the width gradually increases from top to bottom can be achieved.

Preferably, the height of the side wall of the inner piston is larger than the height of the side wall of the inner sleeve of the piston above the bulge.

Preferably, the piston connecting rod and the piston adjusting cylinder are connected through a connecting piece.

The through holes on the inner wall of the inner sleeve of the piston are strip-shaped through holes, and the width of the through holes gradually increases from top to bottom. As the inner piston is raised, the opening area of the through hole is rapidly reduced, and the liquid discharge amount is more rapidly reduced; conversely, as the inner piston is lowered, the opening area of the through hole is rapidly increased, and the liquid discharge amount is also more rapidly increased.

The beneficial effects are that: compared with the prior art, the design of the inner piston device can effectively regulate the liquid flow, the piston head can be matched with openings of other parts to play a role of a valve core, and the two parts are combined to achieve the purposes of sealing and slowly and rapidly releasing the liquid; in addition, the design of piston outer tube can match with other parts, and when piston head and the whole upward movement of interior sleeve pipe of piston, can not shelter from the through-hole on the interior sleeve pipe of piston by other parts. Meanwhile, the outer sleeve of the piston is not provided with an opening, and the sealing state of other parts can not be damaged when the relative positions of the other parts are changed.

Finally, the upper part of the device is connected with the piston adjusting cylinder, the lower part is connected with the inner piston mechanism, and the integrated design can eliminate the falling-off phenomenon of the piston executing mechanism in the operation, reduce the faults in the operation of equipment and is beneficial to the maintenance of later monotone equipment.

Drawings

Fig. 1 is a schematic main structure of a piston device according to the present invention.

Fig. 2 is a schematic view of the structure of the through hole in the side wall of the piston inner sleeve of the piston device.

Fig. 3 is a schematic view of the flow of liquid in the inner piston device of the present invention.

Detailed Description

The invention is further described below in connection with the drawings, but is not intended to limit the scope of the invention. Modifications and substitutions of the structure of the present invention without departing from the spirit and essence of the invention are all within the scope of the present invention.

Example 1

A piston device for regulating liquid discharge, as shown in fig. 1-3, comprises a bottom inner piston device 1, a middle piston connecting rod 2 and a top piston regulating cylinder 3; the inner piston device 1 comprises a piston head 11, an inner piston 12 and an inner piston sleeve 13, the inner piston sleeve 13 is sleeved outside the inner piston 12, a piston connecting rod 2 penetrates through the top of the inner piston sleeve 13 and is fixedly connected with the inner piston 12, the lower end of the inner piston sleeve 13 is fixedly connected with the piston head 11, a circle of continuous horizontal protrusions 15 are arranged on the inner wall of the inner piston sleeve 13, and through holes 16 are formed in the side wall of the inner piston sleeve 13 above the protrusions 15; the lower ends of the piston head 11 and the inner piston sleeve 13 are respectively provided with an opening, the outer wall of the inner piston 12 is tightly contacted with a circle of side wall of the bulge 15, and can slide up and down under the drive of the piston connecting rod 2, and the inner part of the inner piston 12 can enable liquid to pass through.

The upper end of the piston inner sleeve 13 is sleeved with a piston outer sleeve 14, the top end of the piston inner sleeve 13 and the top end of the piston outer sleeve 14 are fixedly and hermetically connected through a sealing cover 17, a gap is reserved between the side walls of the inner sleeve and the outer sleeve, the lower end of the piston outer sleeve 14 is opened, the piston connecting rod 2 passes through the sealing cover 17, and the position of the bulge 15 is higher than the lower end opening of the piston outer sleeve 14.

The inner wall of the inner piston 12 is fixed with a connecting block through which the piston connecting rod 2 is fixedly connected with the inner piston 12, and a gap for liquid to pass through is reserved between the connecting block and the inner wall of the inner piston 12. The top and bottom of the inner piston 12 are both open, or one is open and the other is open.

The through holes 16 are vertical bar-shaped through holes, are uniformly distributed on the side wall of the inner sleeve (13) of the piston, and have gradually increased width from top to bottom (in the embodiment, each gradient adopts a rectangular structure with the same vertical width at the side, namely, the whole body is provided with a step-shaped vertical bar-shaped opening). The height of the side wall of the inner piston 12 is greater than the height of the side wall of the inner piston sleeve 13 above the projections 15. The piston connecting rod 2 and the piston adjusting cylinder 3 are connected by a connecting piece 23.

The working principle of the piston device of the invention is as follows (as shown in fig. 2):

in the raw gas pressure regulating device of the single carbonization chamber of the coke oven, liquid and raw gas are generally mixed. When the raw gas pressure is high, the volume flow of the raw gas is increased by discharging liquid, so that the raw gas pressure is reduced. When the raw gas pressure is too high, the liquid needs to be discharged rapidly; when the raw gas pressure is not too high, the liquid is not required to be discharged or the liquid is slowly discharged. The device can be used as a valve core structure in a pressure regulating device.

In the device, when the piston head 11 is arranged at the bottom, the piston head 11 is in sealing contact with openings of other parts to seal liquid, and when the liquid level is lower than the top end of the side wall of the inner piston 12, the liquid cannot enter the inner piston 12, and the piston device seals the liquid to prevent the liquid from flowing out to reduce the raw gas pressure.

When the liquid level is higher than the top of the side wall of the inner piston 12, the liquid sequentially passes through the gap between the inner piston sleeve 13 and the outer piston sleeve 14, the through holes on the side wall of the inner piston sleeve 13 and the inner space of the inner piston 12, and finally flows out from the bottom outlet, so that the raw gas pressure is reduced. When the raw gas pressure is reduced too fast, the piston device is started, the bulge 15 of the inner piston 12 slides upwards, the top end position of the side wall of the inner piston 12 is gradually increased, the liquid amount entering from the through hole on the side wall of the inner sleeve 13 of the piston is gradually reduced, and when the top end position of the side wall of the inner piston 12 is higher than the liquid level position, the liquid stops discharging, so that the raw gas pressure is effectively regulated.

When the raw gas pressure is too high and liquid needs to be discharged rapidly, the inner piston 12 continues to move upwards, and when the top end of the inner piston reaches the bottom surface of the sealing cover 16, the inner piston sleeve 13 and the outer piston sleeve 14 are driven to move integrally upwards, so that the piston head 11 is driven to move upwards, the piston head is separated from the openings of other parts, the openings are opened, the liquid is discharged rapidly from the bottom, and the purpose of reducing the pressure rapidly is achieved.

While the invention has been described in detail in the foregoing general description and with reference to specific embodiments thereof, it will be apparent to one skilled in the art that modifications and improvements can be made thereto. Accordingly, such modifications or improvements may be made without departing from the spirit of the invention and are intended to be within the scope of the invention as claimed.

Claims

1. A piston device for regulating the discharge of a liquid, characterized by comprising a bottom inner piston device (1), a middle piston connecting rod (2) and a top piston regulating cylinder (3); the inner piston device (1) comprises a piston head (11), an inner piston (12) and an inner piston sleeve (13), the inner piston sleeve (13) is sleeved outside the inner piston (12), a piston connecting rod (2) penetrates through the top of the inner piston sleeve (13) and is fixedly connected with the inner piston (12), the lower end of the inner piston sleeve (13) is fixedly connected with the piston head (11), a circle of continuous horizontal protrusions (15) are arranged on the inner wall of the inner piston sleeve (13), and through holes (16) are formed in the side wall of the inner piston sleeve (13) above the protrusions (15); the lower ends of the piston head (11) and the inner sleeve (13) of the piston are respectively provided with an opening, the outer wall of the inner piston (12) is tightly contacted with a circle of side wall of the bulge (15), and the inner piston can slide up and down under the drive of the piston connecting rod (2), so that liquid can pass through the inner part of the inner piston (12).

2. The piston device for regulating liquid discharge according to claim 1, characterized in that the upper end of the piston inner sleeve (13) is sleeved with a piston outer sleeve (14), the top end of the piston inner sleeve (13) and the top end of the piston outer sleeve (14) are fixedly and hermetically connected, a gap is left between the side walls of the inner sleeve and the outer sleeve, and the lower end of the piston outer sleeve (14) is opened.

3. A piston device for regulating the discharge of liquid according to claim 2, characterized in that the top end of the inner piston sleeve (13) and the top end of the outer piston sleeve (14) are fixedly and sealingly connected by means of a cover (17), through which cover (17) the piston connecting rod (2) passes.

4. A piston device for regulating the discharge of liquid according to claim 2, characterized in that the projection (15) is located higher than the lower end opening of the outer piston sleeve (14).

5. The piston device for regulating the discharge of liquid according to claim 1, characterized in that a connecting block is fixed to the inner wall of the inner piston (12), through which connecting block the piston connecting rod (2) is fixedly connected to the inner piston (12), and a gap is left between the connecting block and the inner wall of the inner piston (12) for the passage of liquid.

6. Piston device for regulating the discharge of liquids according to claim 1, characterized in that the top and bottom of the inner piston (12) are open or one open and the other open.

7. The piston device for regulating the discharge of liquid according to claim 1, characterized in that said through holes (16) are strip-shaped through holes of uniform width up and down, or strip-shaped openings of gradually increasing width from top to bottom, the through holes (16) being uniformly distributed on the side wall of the inner sleeve (13) of the piston.

8. A piston arrangement for regulating the discharge of liquid according to claim 1, characterized in that the side wall height of the inner piston (12) is greater than the height of the side wall of the inner piston sleeve (13) above the projection (15).

9. Piston device for regulating the discharge of a liquid according to claim 1, characterized in that the piston connecting rod (2) and the piston regulating cylinder (3) are connected by means of a connecting piece (23).