CN111649481A

CN111649481A - Hot-blast stove system with pressure regulating function

Info

Publication number: CN111649481A
Application number: CN202010580415.6A
Authority: CN
Inventors: 段世荣
Original assignee: Pingxiang Huashun Environmental Protection Chemical Packing Co ltd
Current assignee: Pingxiang Huashun Environmental Protection Chemical Packing Co ltd
Priority date: 2020-06-23
Filing date: 2020-06-23
Publication date: 2020-09-11
Anticipated expiration: 2040-06-23
Also published as: CN111649481B

Abstract

The invention discloses a hot blast stove system with a pressure regulating function, which belongs to the field of hot blast stove systems and comprises a hot blast stove, a combustion system, a natural gas pressure regulating system, a waste heat treatment system and an electric control system, wherein the combustion system is connected with the hot blast stove through a pipeline, the natural gas pressure regulating system is connected with the combustion system through a pipeline, the waste heat treatment system is connected with the hot blast stove through a pipeline, and the electric control system is arranged on the hot blast stove. The hot blast stove system with the pressure regulating function disclosed by the invention has the advantages that the automatic pressure regulation of the natural gas in the natural gas pipeline is realized by adopting a mechanical mechanism, and the stability of the natural gas in a combustion chamber in the hot blast stove system during combustion is ensured.

Description

Hot-blast stove system with pressure regulating function

Technical Field

The invention relates to the field of hot blast stove systems, in particular to a hot blast stove system with a pressure regulating function.

Background

The hot blast stove is a thermal power machine, is widely applied in China in the end of the 20 th century 70 years, and has become an upgrading product of an electric heat source and a traditional steam power heat source in many industries. The hot blast stove has various types and complete series, and is divided into a hand burning mode and a machine burning mode by a coal feeding mode, and is divided into a coal furnace, an oil furnace, a gas furnace and the like by fuel types.

The invention aims at a hot blast stove using natural gas as fuel, and in the daily production process of enterprises, technicians observe the unstable situation of the natural gas in a combustion chamber in a hot blast stove system during combustion, and the unstable situation is obtained through investigation and analysis, which is caused by the unstable gas pressure of the natural gas in a natural gas pipeline during the operation process.

For solving the unstable condition of natural gas pressure, the enterprise carries out real-time supervision and adjusts the interior operation atmospheric pressure of natural gas line through electrical control system, and electrical control system can feed back the data change condition of the interior operation atmospheric pressure of natural gas line in real time, then adjusts the initial atmospheric pressure of natural gas through the manual work to the interior operation atmospheric pressure of adjustment natural gas line. However, the operating pressure in the natural gas pipeline is complex and variable, so the data of the operating pressure of the natural gas in the pipeline always shows irregular change, and in addition, the initial pressure of the natural gas pipeline cannot be adjusted to be in one-to-one correspondence with the operating pressure in the natural gas pipeline, so that even if the operating pressure in the natural gas pipeline is adjusted by introducing an electrical control system, the problem of difficult manual adjustment caused by the irregular change of the operating pressure of the natural gas still exists.

Disclosure of Invention

In order to overcome the defects of the prior art, the invention aims to provide a hot blast stove system with a pressure regulating function, which changes the mode of electrically controlling and regulating pressure, adopts a mechanical mechanism to realize the automatic pressure regulation of natural gas in a natural gas pipeline, and automatically adapts to the irregular change of the operating pressure of the natural gas in the natural gas pipeline for regulation.

In order to achieve the purpose, the invention adopts the following technical scheme:

the invention provides a hot blast stove system with a pressure regulating function, which comprises a hot blast stove; the combustion system is connected with the hot blast stove through a pipeline and is used for producing hot blast required by the hot blast stove; the natural gas pressure regulating system is connected with the combustion system through a pipeline and is used for regulating the air pressure of natural gas entering the combustion system in the natural gas pipeline; the waste heat treatment system is connected with the hot blast stove through a pipeline and is used for supplying hot air with waste heat to other devices after the hot blast stove is used, the hot air with the waste heat in the system is utilized, the consumption of fuel required by other devices for manufacturing the hot air is reduced, and resources are saved; and the electric control system is used for monitoring, processing and controlling the operation condition of each part in the hot blast stove system.

One or more technical solutions provided in the embodiments of the present application have at least the following technical effects:

according to the hot blast stove system with the pressure regulating function, the automatic pressure regulation of the natural gas in the natural gas pipeline is realized by adopting the mechanical mechanism, and the problem that the natural gas in a combustion chamber in the hot blast stove system is unstable during combustion is solved; compared with an electrical control system for regulating the pressure, the mechanical pressure regulating structure has the self-adaptive capacity of matching with the change of the operating air pressure in the natural gas pipeline, and the automatic regulation of the operating air pressure in the natural gas pipeline can be realized through the matching between the mechanical structures without manual detection and regulation; meanwhile, the operating air pressure in the natural gas pipeline is maintained within a certain range, the situation that natural gas cannot be conveyed into the combustion chamber due to the fact that the operating air pressure in the natural gas pipeline is too low is avoided, and the situation that the pipeline is deformed due to the fact that the operating air pressure in the natural gas pipeline is too high is also avoided.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention.

In the drawings:

fig. 1 is a schematic diagram illustrating an overall structure of a hot blast stove system having a pressure regulating function according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of a natural gas pressure regulating system in a hot blast stove system with pressure regulating function according to an embodiment of the present invention;

FIG. 3 is a schematic diagram of a jacking mechanism in a natural gas pressure regulating system of a hot blast stove system with pressure regulating functionality provided in an embodiment of the present invention;

FIG. 4 is a schematic diagram of a bump stop structure in a natural gas pressure regulating system of a hot blast stove system with pressure regulating function according to an embodiment of the present invention;

FIG. 5 is a top view of a natural gas pipeline with a slider section in a natural gas pressure regulating system in a hot blast stove system with pressure regulating functionality provided in an embodiment of the present invention;

FIG. 6 is a schematic diagram of a fixed baffle structure in a natural gas pressure regulating system of a hot blast stove system with pressure regulating function according to an embodiment of the present invention;

FIG. 7 is a schematic diagram of an external structure of a combustion system in a hot blast stove system having a pressure regulating function according to an embodiment of the present invention;

fig. 8 is a schematic view of an external structure of a hot blast stove in a hot blast stove system having a pressure regulating function according to an embodiment of the present invention;

FIG. 9 is a schematic view of a waste heat treatment pipe of a hot blast stove in a hot blast stove system having a pressure regulating function according to an embodiment of the present invention;

fig. 10 is a schematic diagram of an electrical control system of a hot blast stove in a hot blast stove system having a pressure regulating function according to an embodiment of the present invention.

In the figure:

1. a natural gas pressure regulating system; 11. a natural gas supply; 12. a natural gas pipeline; 121. a sliding contact hole; 13. fixing a baffle plate; 131. an outer ring; 132. an inner ring; 133. a door hinge; 134. dividing the lines; 14. a natural gas detection module; 15. a slider; 16. a gas compressor; 17. a dust-proof box; 18. a jack-up mechanism; 181. a roller; 182. a displacement block; 183. grinding a grinding wheel; 184. a top block; 185. a top rod; 186. a connecting rod; 187. a hinge; 188. a movable baffle; 189. a limiting clamp plate; 19. a limit stop block; 191. a triangular stop block; 192. a rolling groove; 2. a combustion system; 21. a combustion chamber; 211. an air inlet pipe; 212. an air inlet pipe; 213. a smoke exhaust pipe; 22. a heat collection cover; 23. a hot air outlet pipe; 3. a hot blast stove; 31. a furnace body; 311. a discharge port; 312. a hot air inlet pipe; 313. a waste heat air outlet pipe; 32. a furnace cover; 321. a feed pipe; 4. a waste heat treatment pipeline; 41. a main pipe; 42. a branch pipe; 5. an electrical control system; 51. a console; 511. a display screen; 512. pressing a key; 52. a support; 53. and (5) reinforcing ribs.

Detailed Description

It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.

It is noted that, unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

In the present invention, unless stated to the contrary, use of the directional terms "upper and lower" are generally directed to the orientation shown in the drawings, or to the vertical, or gravitational direction; likewise, for ease of understanding and description, "left and right" are generally to the left and right as shown in the drawings; "inner and outer" refer to the inner and outer relative to the profile of the respective member itself, but the above directional terms are not intended to limit the present invention.

In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

Example 1

As shown in fig. 1, the hot blast stove system with pressure regulating function provided in this embodiment includes a hot blast stove 3; the combustion system 2 is connected with the hot blast stove 3 through a pipeline, and the combustion system 3 is used for producing hot air required by the hot blast stove 3; the natural gas pressure regulating system 1 is connected with the combustion system 2 through a pipeline, and the natural gas pressure regulating system 1 is used for regulating the air pressure of natural gas entering the combustion system 2 in the natural gas pipeline; the waste heat treatment system is connected with the hot blast stove 3 through a pipeline and is used for supplying hot air with waste heat after the hot blast stove 3 is used to other devices, the hot air with the waste heat in the system is utilized, the consumption of fuel required by other devices for manufacturing the hot air is reduced, and resources are saved; the electric control system 5 can be an industrial personal computer (such as the Tuhua IPC-610), a PLC (such as Siemens 300 series or Mitsubishi FX3U series), a control circuit, or a single chip microcomputer (such as 51 series or STM32 series) or other control elements or control units, and the electric control system 5 is used for monitoring, processing and controlling the operation conditions of each part in the hot blast stove system.

As shown in fig. 8, in the present embodiment, the hot blast stove 3 includes a stove body 31, an inner container of the stove body 31 is cast and molded by using high-alumina phosphate, an inner container steel sleeve is made of a #304 stainless steel plate, and an outer sleeve steel cylinder is made of a steel plate with a thickness of 8 mm; a discharge port 311, wherein the discharge port 311 is arranged at the bottom of the furnace body 31, and the discharge port 311 is used for taking out the materials processed by the hot blast stove 3; the hot air inlet pipe 312 is arranged at the bottom of the side surface of the furnace body 31, the bottom surface of the hot air inlet pipe 312 and the top surface of the discharge hole 311 are positioned at the same level, and the hot air inlet pipe 312 is used for guiding hot air generated by the combustion system 2 into the hot air furnace 3; the waste heat air outlet pipe 313 is arranged at the top of the side surface of the book searching furnace body 31, so that waste heat air used by the hot blast stove 3 is led out to other devices for utilization; the furnace cover 32 is positioned at the top of the furnace body 31 and is in rotary connection with the furnace body 31 through threads, and the upper top surface of the furnace cover 32 is arc-shaped; and the feeding pipe 321 is arranged on the upper top surface of the furnace cover 32 and is used for feeding materials into the hot blast furnace 3 for treatment.

As shown in fig. 7, in the present embodiment, the combustion system 2 comprises a combustion chamber 21, the combustion chamber 21 is used for combusting fuel and generating hot air required by the hot blast stove 3; the air inlet pipe 211 is arranged at the bottom of one side of the combustion chamber 21, and the air inlet pipe 211 guides air into the combustion chamber 21 for heating through a fan outside the system; an intake pipe 212, provided at the bottom of the combustion chamber 21 on one side, for introducing natural gas required for combustion into the combustion chamber 21 for combustion; the smoke exhaust pipe 213 is arranged at the top of one side of the combustion chamber 21 and used for exhausting smoke generated in the combustion chamber 21 outwards; the heat collection cover 22 is arranged at the top of the combustion chamber 21, the caliber of the bottom surface of the heat collection cover 22 is larger than that of the top surface of the heat collection cover 22, and the heat collection cover 22 is used for collecting hot air generated by the combustion chamber 21; the hot air outlet pipe 23 is arranged on the heat collection cover 22, and is used for guiding the hot air collected by the heat collection cover 22 into the hot air furnace 3 for utilization; the combustor in the combustion chamber 21 adopts a high-power natural gas high-speed burner with the power of 800kw/h, two heat insulation structures are arranged in a hearth, one heat insulation structure adopts a first-grade high-aluminum refractory material, and the other heat insulation structure adopts a mullite honeycomb ceramic structure, so that the combustion efficiency can be greatly improved, the combustion is more sufficient, no black smoke is generated, no influence is caused on the product, and the ignition is controlled through an electric linkage device.

As shown in fig. 2, in the present embodiment, the natural gas pressure regulating system 1 includes a natural gas supply device 11, where the natural gas supply device 11 is configured to supply natural gas into the hot blast stove system after the natural gas is subjected to pressurization processing, a pressure of the natural gas at an outlet of the natural gas supply device 11 is referred to as a natural gas initial pressure, and the natural gas initial pressure is adjusted by controlling a pressurization pump or a pressurization valve through the electrical control system 5; the natural gas pipeline 12 is connected to the outlet of the natural gas supply device 11 and used for transporting natural gas supplied by the natural gas supply device 11, in order to adapt to the system designed by the invention, the natural gas pipeline 12 is a square pipeline, and the pressure of the natural gas transported in the natural gas pipeline 12 is called as natural gas operating pressure; the natural gas outlet pipeline is used for conveying the natural gas processed by the natural gas pressure regulating system 1 to the combustion system 2 for combustion, the natural gas outlet pipeline is perpendicular to the natural gas pipeline 12, the natural gas outlet pipeline is positioned below the natural gas pipeline 12, and the natural gas outlet pipeline can be a square pipeline or a round pipeline; the fixed baffle 13 is arranged in the natural gas pipeline 12, the fixed baffle 13 is used for controlling the natural gas in the natural gas pipeline 12 to pass through, four sides of the fixed baffle 13 are fixedly connected with the natural gas pipeline 12, and the sealing performance between the fixed baffle 13 and the natural gas pipeline 12 is ensured; the natural gas detection module 14 is arranged in the downwind direction of the fixed baffle 13, the natural gas detection module 14 is used for detecting the concentration of natural gas in the natural gas pipeline 12, the detection result is displayed by the electrical control system 5, when the natural gas detection module 14 detects that the concentration of the natural gas in the natural gas pipeline 12 reaches a certain value, the natural gas can be proved to enter a subsequent pipeline through the fixed baffle 13, if the natural gas detection module 14 does not detect the natural gas or detects that the concentration of the natural gas is lower than a certain value, the natural gas is proved to be blocked between the natural gas supply device 11 and the fixed baffle 13 by the fixed baffle 13, and the initial pressure of the natural gas in the natural gas supply device 11 needs to be further increased; the natural gas pipeline comprises a sliding block 15, the sliding block 15 is arranged in the natural gas pipeline 12, the sliding block 15 is located in the downwind direction of the natural gas outlet pipeline, the length of the bottom surface of the sliding block 15 is larger than the diameter or the width of the natural gas outlet pipeline, the edge of the sliding block 15 is attached to the pipe wall of the natural gas pipeline 12, the air tightness between the sliding block 15 and the natural gas pipeline 12 is guaranteed, meanwhile, the sliding block 15 can move in the natural gas pipeline 12, the sliding block 15 can be made of rubber materials and is polished smooth to take account of the air tightness and the sliding performance, chamfers are arranged on the edge of the sliding block 15 and are used for reducing the sliding resistance of the sliding block 15 in the natural gas pipeline 12, the sliding block 15 can slide more easily, the sliding block 15 has two functions, on one hand, the opening size of the natural gas outlet pipeline can be controlled, when the running, the opening of the natural gas outlet pipeline is enlarged, so that the natural gas is accelerated to supply gas into the subsequent combustion system 2, the flow of the natural gas is increased along with the increase of the natural gas outlet pipeline, the amount of the natural gas left in the natural gas pipeline 12 is reduced, the air pressure in the pipeline is reduced, the function of adjusting the running air pressure of the natural gas to the reducing direction is realized, the pipeline deformation caused by the overlarge running air pressure of the natural gas is prevented, and on the other hand, the sliding block 15 can move in the natural gas pipeline 12 to ensure the running of the subsequent adjusting mechanism; the gas compressor 16 is arranged at the tail end of the natural gas pipeline 12, a gas outlet of the gas compressor 16 is aligned to the side face of the sliding block 15, external gas is compressed by the gas compressor 16 and then is introduced into the natural gas pipeline 12, and the constant gas pressure in the natural gas pipeline 12 between the sliding block 15 and the gas compressor 16 is ensured; the movable baffle 188 penetrates through the upper pipe wall of the natural gas pipeline 12, the movable baffle 188 is located in the upper wind direction of the fixed baffle 13, the movable baffle 188 is mechanically controlled through the jacking mechanism 18 to move up and down, the movable baffle 188 is used for controlling and adjusting the flow of natural gas passing through the natural gas pipeline 12, the movable baffle 188 is limited by limiting clamping plates 189 located on two sides of the movable baffle 188 to move up and down, the limiting clamping plates 189 are fixed on the upper surface of the natural gas pipeline 12, when the operating air pressure in the natural gas pipeline is too high, the movable baffle 188 is driven to move down through the movement of the sliding block 15, the air inflow of natural gas passing through the fixed baffle 13 is reduced, and therefore the natural gas operating air pressure between the section of the fixed baffle 13 and the section of; when the natural gas operation air pressure between the section of the fixed baffle 13 and the natural gas outlet pipeline section is gradually restored to the normal operation air pressure from high air pressure or gradually reduced to the minimum air inlet air pressure from normal air pressure, the movable baffle 188 is driven by the movement of the slide block 15 to move upwards, the air inlet amount of the natural gas passing through the fixed baffle 13 is increased, and therefore the natural gas operation air pressure between the section of the fixed baffle 13 and the natural gas outlet pipeline section is increased; to sum up, through the cooperation between fixed baffle 13, slider 15 and movable baffle 188, the operating pressure of the natural gas in natural gas pipeline 12 is controlled within a certain range, and through the change of the operating pressure in natural gas pipeline 12 of combined action cooperation between baffle 13, slider 15 and movable baffle 188, the function of automatic adjustment is realized.

As shown in fig. 3, in the present embodiment, the jacking mechanism 18 includes a roller 181, and the roller 181 rolls on the upper surface of the slider 15; the grinding wheel 183 is sleeved at the bottom of the roller 181, the height of the top surface of the grinding wheel 183 is lower than the height of the circle center of the roller 181, the grinding wheel 183 is sleeved at the bottom of the roller 181 in the process of machining the roller 181, and the friction coefficient of the bottom of the roller 181 is increased; two displacement blocks 182, wherein the two displacement blocks 182 are symmetrically arranged at two sides of the top of the roller 181, and the top surfaces of the two displacement blocks 182 are both arc-shaped; the push rod 185 is arranged between the two displacement blocks 182, the bottom of the push rod 185 is provided with the top block 184, the bottom surface of the top block 184 is in contact with the roller 181, the bottom surface of the top block 184 is arc-shaped, and in the rotating process of the roller 181, the top block 184 moves along the surface of the displacement block 182 to drive the push rod 185 to jack upwards; a link 186, one end of the link 186 is connected with the top end of a top rod 185 through a hinge 187, the other end of the link 186 is connected with the top end of a movable baffle 188 through the hinge 187, the center of the link 186 is also provided with the hinge 187, and when the top rod 185 moves from the closest point between the displacement block 182 and the roller 181 to the farthest point between the displacement block 182 and the roller 181, the movable baffle 188 moves downwards through the link 186 and the plurality of hinges 187; conversely, when the push rod 187 moves from passing through the farthest point between the displacement block 182 and the roller 181 to the closest point between the displacement block 182 and the roller 181, the movable flap 188 is moved upward by the link 186 and the plurality of hinges 187; the dust-proof box 17 is arranged outside the jacking mechanism 18, the ejector rod 185 penetrates through the upper surface of the dust-proof box 17, the dust-proof box 17 can play a dust-proof role on one hand, external dust is prevented from entering the natural gas pipeline 12 to influence the air tightness between the sliding block 15 and the natural gas pipeline 12, and on the other hand, the fixed clamping effect on the jacking mechanism 18 can be played, so that the motion track of the jacking mechanism 18 is guaranteed to move upwards or downwards in a straight line.

As shown in fig. 5, in the present embodiment, the natural gas pipeline 12 is provided with a sliding contact hole 121 on the top surface of the sliding block 15, and the sliding contact hole 121 is used for contacting the roller 181 with the sliding block 151; the width of the sliding contact hole 121 is smaller than that of the sliding block 151, and the length of the sliding contact hole 121 is smaller than that of two-thirds of the sliding block 151, so that the air tightness between the sliding block 15 and the natural gas pipeline 12 is always kept in the sliding process of the sliding block 15.

As shown in fig. 4, in the present embodiment, a limit stop 19 is disposed on the upper surface of the slider 15, and the limit stop 19 is used to prevent the roller 181 from rolling and deviating, so as to ensure that the roller 181 rolls in a straight line; the limit stop 19 comprises two triangular stops 191, the right-angle sides of the two triangular stops 191 are in contact with the top surface of the sliding block 15, a rolling groove 192 used for rolling the roller 181 is arranged between the two triangular stops 191, in the process of moving the sliding block 15 left and right, the roller 181 rolls back and forth in the rolling groove 192, the rolling groove 192 ensures the motion track of the roller 181 on the one hand, and on the other hand, the two sides of the rolling groove 192 can prevent the roller 181 from exceeding the stroke and rolling to the outside of the rolling groove 192, so that the mechanism cannot work normally.

As shown in fig. 6, in the present embodiment, the fixed baffle 13 includes an outer ring 131, and the outer ring 131 is fixedly connected to the inner wall of the natural gas pipeline 12 and ensures the sealing property between the outer ring 131 and the natural gas pipeline 12; the inner ring 132 is positioned at the four-fifths to three-fifths of the distance between the center of the fixed baffle 13 and the outer ring 131, the inner ring 132 is divided into four to six congruent triangular blocks by a dividing line 134, the inner ring 132 is divided along the dividing line 134 by a laser cutting technology, the triangular blocks on the inner ring 132 can be detached from the fixed baffle 13, a plurality of door hinges 133 are arranged at the edge of the inner ring 132, and the triangular blocks can be movably connected to the fixed baffle 13 by the door hinges 133; when natural gas is not supplied, the fixed baffle 13 is in a closed state, the natural gas supply device 11 is opened and controlled by the electrical control system 5, the initial pressure of the natural gas is gradually increased, so that the operating pressure of the natural gas in the natural gas pipeline 12 is increased, when the operating pressure of the natural gas in the natural gas pipeline 12 reaches a certain value, the force of the natural gas acting on the fixed baffle 13 pushes the fixed baffle 13 to open, the triangular blocks on the inner ring 132 are turned inwards under the action of the door hinges 133, so that the natural gas passes through the fixed baffle 13, and the operating pressure of the natural gas at the moment is called as the minimum operating pressure of the natural gas, so that the arrangement of the fixed baffle 13 can play a role in controlling the minimum operating pressure of the natural gas.

As shown in fig. 9, in the present embodiment, the waste heat treatment system includes a waste heat treatment pipeline 4, and an air inlet end of the waste heat treatment pipeline 4 is connected to the hot blast stove 3; the waste heat treatment pipeline 4 comprises a main pipe 41 and a plurality of branch pipes 42, the tail ends of the branch pipes 42 are communicated with the main pipe 41, and the air outlet ends of the branch pipes 42 are connected with each device needing waste heat and hot air.

As shown in fig. 10, in the present embodiment, the electrical control system 5 includes a console 51, and a display screen 511 for displaying data of the hot blast stove system and a button 512 for adjusting the hot blast stove system are provided on the console 51; a bracket 52, by which the console 51 is fixed; the reinforcing ribs 53 are arranged on two sides of the bracket 52, and are used for enhancing the structural strength of the bracket 52.

Example 2

In the embodiment 1, the natural gas pipeline 12 is matched with the sliding block 15, so that a square pipeline which is not common is selected, in the embodiment, a circular pipeline can be selected as the natural gas pipeline 12, and the sliding block 15 is changed into a cylindrical shape, the contact surface between the limit stop 19 at the top of the natural gas pipeline 12 and the natural gas pipeline 12 is changed from a triangle to an arc shape, and in the processing process, the inconvenience of part processing caused by the fact that the natural gas pipeline 12 is changed into the circular shape is found to exceed the problem of processing caused by the square pipeline in the embodiment 1, so that the two embodiments are comprehensively compared, and the enterprise selects the scheme described in the embodiment 1.

The above description is only an embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the inventive work should be included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope defined by the claims.

Claims

1. The utility model provides a hot-blast furnace system with pressure regulating function which characterized in that, hot-blast furnace system with pressure regulating function includes:

a hot blast stove (3);

the combustion system (2) is connected with the hot blast stove (3) through a pipeline, and the combustion system (2) is used for producing hot blast required by the hot blast stove (3);

the natural gas pressure regulating system (1) is connected with the combustion system (2) through a pipeline, and the natural gas pressure regulating system (1) is used for regulating the air pressure of natural gas entering the combustion system (2) in the natural gas pipeline;

the waste heat treatment system is connected with the hot blast stove (3) through a pipeline and is used for supplying hot air with waste heat after the hot blast stove (3) is used to other devices, the hot air with the waste heat in the system is utilized, the consumption of fuel required by other devices for manufacturing the hot air is reduced, and resources are saved;

and the electric control system (5) is used for monitoring, processing and controlling the operation condition of each part in the hot blast stove system.

2. A hot blast stove system with pressure regulating function according to claim 1, characterized in that the hot blast stove (3) comprises:

a furnace body (31);

the discharge port (311) is arranged at the bottom of the furnace body (31) and used for taking out the materials processed by the hot blast stove (3);

the hot air inlet pipe (312) is arranged at the bottom of the side face of the furnace body (31), the bottom face of the hot air inlet pipe (312) and the top face of the discharge hole (311) are positioned at the same level, and the hot air inlet pipe (312) is used for guiding hot air generated by the combustion system (2) into the hot air furnace (3);

the waste heat air outlet pipe (313) is arranged at the top of the side surface of the book searching furnace body (31), so that waste heat air used by the hot blast stove (3) is led out to other devices for utilization;

the furnace cover (32) is positioned at the top of the furnace body (31) and is in rotary connection with the furnace body (31) through threads, and the upper top surface of the furnace cover (32) is arc-shaped;

the feeding pipe (321) is arranged on the upper top surface of the furnace cover (32) and used for feeding materials into the hot blast stove (3) for treatment.

3. A hot blast stove system with pressure regulating function according to claim 1, characterized in that the combustion system (2) comprises:

a combustion chamber (21), said combustion chamber (21) being adapted to combust a fuel and to generate hot air required by said stove (3);

the air inlet pipe (211) is arranged at the bottom of one side of the combustion chamber (21), and air is introduced into the combustion chamber (21) for heating through a fan outside the system;

the air inlet pipe (212) is arranged at the bottom of one side of the combustion chamber (21) and used for introducing natural gas required by combustion into the combustion chamber (21) for combustion;

the smoke exhaust pipe (213), the smoke exhaust pipe (213) is arranged at the top of one side of the combustion chamber (21) and is used for exhausting smoke generated in the combustion chamber (21) outwards;

the heat collection cover (22), the heat collection cover (22) is arranged at the top of the combustion chamber (21), the caliber of the bottom surface of the heat collection cover (22) is larger than the caliber of the top surface of the heat collection cover (22), and the heat collection cover (22) is used for collecting hot air generated by the combustion chamber (21);

the hot air outlet pipe (23) is arranged on the heat collection cover (22) and used for guiding hot air collected by the heat collection cover (22) into the hot air furnace (3) to be utilized.

4. A hot blast stove system with pressure regulating function according to claim 1, characterized in that the natural gas pressure regulating system (1) comprises:

the natural gas supply device (11) is used for supplying natural gas into the hot blast stove system after the natural gas is subjected to pressurization treatment, the pressure of the natural gas at the outlet of the natural gas supply device (11) is called as natural gas initial air pressure, and the natural gas initial pressure is controlled and adjusted through the electric control system (5);

the natural gas pipeline (12) is connected to the outlet of the natural gas supply device (11) and is used for transporting the natural gas supplied by the natural gas supply device (11), in order to adapt to the system designed by the invention, the natural gas pipeline (12) is a square pipeline, and the pressure of the natural gas transported in the natural gas pipeline (12) is called as natural gas operating pressure;

the natural gas outlet pipeline is used for conveying the natural gas processed by the natural gas pressure regulating system (1) to the combustion system (2) for combustion, the natural gas outlet pipeline is perpendicular to the natural gas pipeline (12), and the natural gas outlet pipeline is positioned below the natural gas pipeline (12);

the fixed baffle (13) is arranged in the natural gas pipeline (12), the fixed baffle (13) is used for controlling the natural gas in the natural gas pipeline (12) to pass through, four sides of the fixed baffle (13) are fixedly connected with the natural gas pipeline (12), and the sealing performance between the fixed baffle (13) and the natural gas pipeline (12) is ensured;

the natural gas detection module (14) is arranged in the downwind direction of the fixed baffle (13), the natural gas detection module (14) is used for detecting the concentration of the natural gas in the natural gas pipeline (12), the detection result is displayed by the electrical control system (5), and when the natural gas detection module (14) detects that the concentration of the natural gas in the natural gas pipeline (12) reaches a certain numerical value, the natural gas can be judged to pass through the fixed baffle (13);

the sliding block (15), the sliding block (15) is arranged in the natural gas pipeline (12), the sliding block (15) is located in the downwind direction of the natural gas outlet pipeline, the length of the bottom surface of the sliding block (15) is larger than the diameter or the width of the natural gas outlet pipeline, the edge of the sliding block (15) is attached to the pipe wall of the natural gas pipeline (12), the air tightness between the sliding block (15) and the natural gas pipeline (12) is guaranteed, meanwhile, the sliding block (15) moves in the natural gas pipeline (12), the edge of the sliding block (15) is provided with a chamfer angle for reducing the sliding resistance of the sliding block (15) in the natural gas pipeline (12), the sliding block (15) has two functions, on one hand, the opening size of the natural gas outlet pipeline can be controlled, on the other hand, the sliding movement can be carried out in the natural gas pipeline (12), ensuring the operation of the subsequent adjusting mechanism;

the gas compressor (16) is arranged at the tail end of the natural gas pipeline (12), a gas outlet of the gas compressor (16) is aligned to the side face of the sliding block (15), external gas is compressed by the gas compressor (16) and then is introduced into the natural gas pipeline (12), and the constant gas pressure in the natural gas pipeline (12) between the sliding block (15) and the gas compressor (16) is ensured;

the natural gas pipeline natural.

5. A hot blast stove system with pressure regulating function according to claim 4, characterized in that the jack-up mechanism (18) comprises:

a roller (181), wherein the roller (181) rolls on the upper surface of the slide block (15);

the grinding wheel (183), the grinding wheel (183) is sleeved at the bottom of the roller (181), and the height of the top surface of the grinding wheel (183) is lower than the height of the circle center of the roller (181);

the two displacement blocks (182) are symmetrically arranged at two sides of the top of the roller (181), and the top surfaces of the two displacement blocks (182) are both arc-shaped;

the ejector rod (185) is arranged between the two displacement blocks (182), the bottom of the ejector rod (185) is provided with an ejector block (184), the bottom surface of the ejector block (184) is in contact with the roller (181), the bottom surface of the ejector block (184) is arc-shaped, and in the rotating process of the roller (181), the ejector block (184) moves along the surface of the displacement block (182) to drive the ejector rod (185) to jack upwards;

a connecting rod (186), one end of the connecting rod (186) is connected with the top end of the push rod (185) through a hinge (187), the other end of the connecting rod (186) is connected with the top end of the movable baffle (188) through the hinge (187), the hinge (187) is also arranged in the center of the connecting rod (186), and when the push rod (185) moves from the closest point between the displacement block (182) and the roller (181) to the farthest point between the displacement block (182) and the roller (181), the movable baffle (188) moves downwards through the action of the connecting rod (186) and the plurality of hinges (187); conversely, when the jack (187) moves from a farthest point passing between the displacement block (182) and the roller (181) to a closest point between the displacement block (182) and the roller (181), the movable baffle (188) is moved upward by the action of the link (186) and the plurality of hinges (187);

jacking mechanism (18) outside is provided with dust proof box (17), ejector pin (185) pass the upper surface of dust proof box (17), dust proof box (17) can play dirt-proof effect on the one hand, prevents that outside dust from entering into in natural gas line (12), the influence slider (15) with gas tightness between natural gas line (12), on the other hand can play right the fixed clamping effect of jacking mechanism (18), guarantee the movement track of jacking mechanism (18).

6. The hot blast stove system with the pressure regulating function according to claim 5, wherein:

the top surface of the natural gas pipeline (12) at the position of the sliding block (15) is provided with a sliding contact hole (121), and the sliding contact hole (121) is used for enabling the roller (181) to be in contact with the sliding block (151);

the width of the sliding contact hole (121) is smaller than that of the sliding block (151), and the length of the sliding contact hole (121) is smaller than that of two thirds of the sliding block (151), so that the sliding block (15) and the natural gas pipeline (12) are always kept airtight in the sliding process of the sliding block (15).

7. The hot blast stove system with the pressure regulating function according to claim 5, wherein:

the upper surface of the sliding block (15) is provided with a limit stop (19), and the limit stop (19) is used for preventing the roller (181) from rolling and deviating, so that the roller (181) is guaranteed to roll in a straight line;

the limit stop (19) comprises two triangular stop blocks (191), the right-angle sides of the triangular stop blocks (191) are in contact with the top surface of the sliding block (15), a rolling groove (192) used for rolling the roller (181) is arranged between the triangular stop blocks (191), the roller (181) rolls back and forth in the rolling groove (192) in the process of moving left and right of the sliding block (15), the rolling groove (192) ensures the motion track of the roller (181), and the two sides of the rolling groove (192) can prevent the roller (181) from exceeding the stroke and rolling to the outside of the rolling groove (192) to cause the mechanism to work normally.

8. A hot blast stove system with pressure regulating function according to claim 4, characterized in that the fixed baffle (13) comprises:

the outer ring (131) is fixedly connected with the inner wall of the natural gas pipeline (12), and the sealing performance between the outer ring (131) and the natural gas pipeline (12) is ensured;

the inner ring (132) is positioned at four-fifths to three-fifths of the distance between the center of the fixed baffle (13) and the outer ring (131), the inner ring (132) is divided into four to six congruent triangular blocks by a dividing line (134), the inner ring (132) is divided along the dividing line (134) by a laser cutting technology, the triangular blocks on the inner ring (132) can be detached from the fixed baffle (13), a plurality of door hinges (133) are arranged at the edge of the inner ring (132), and the triangular blocks can be movably connected to the fixed baffle (13) by the door hinges (133);

wherein, when the natural gas is not supplied, the fixed baffle (13) belongs to the closed condition, at the moment, the natural gas supply device (11) is opened and controlled by the electric control system (5) to gradually increase the initial pressure of the natural gas, thereby increasing the natural gas operating pressure in the natural gas pipeline (12), when the natural gas operating pressure in the natural gas pipeline (12) reaches a certain value, the force of the natural gas acting on the fixed flap (13) will push the fixed flap (13) open, the triangular blocks on the inner ring (132) are turned inwards under the action of the door hinge (133), so that the natural gas passes through the fixed baffle (13), the natural gas operation pressure at the moment is called as natural gas operation lowest pressure, it follows that the fixed baffle (13) may function to control the minimum operating pressure of the natural gas.

9. The hot blast stove system with pressure regulating function according to claim 1, wherein the waste heat treatment system comprises:

the gas inlet end of the waste heat treatment pipeline (4) is connected with the hot blast stove (3);

waste heat treatment pipeline (4) are including being responsible for (41) and many branch pipes (42), many the end UNICOM of branch pipe (42) is in be responsible for (41), many the end of giving vent to anger of branch pipe (42) is connected with each equipment that needs the waste heat hot-blast.

10. A hot blast stove system with voltage regulation according to claim 1, characterized in that the electrical control system (5) comprises:

the control console (51), the said control console (51) is equipped with the display screen (511) used for revealing the data of the said hot-blast stove system and adjusts the key set (512) of the said hot-blast stove system;

a bracket (52), by which the console (51) is fixed;

the reinforcing ribs (53) are arranged on two sides of the bracket (52) and used for enhancing the structural strength of the bracket (52).