CN218154149U

CN218154149U - SP boiler with rapping dust-cleaning device

Info

Publication number: CN218154149U
Application number: CN202221898781.7U
Authority: CN
Inventors: 包旦明; 高新红; 周春城
Original assignee: Hangzhou Xingyun Environmental Technology Co ltd
Current assignee: Hangzhou Xingyun Environmental Technology Co ltd
Priority date: 2022-07-22
Filing date: 2022-07-22
Publication date: 2022-12-27
Anticipated expiration: 2032-07-22

Abstract

The utility model relates to an SP boiler with rapping dust-cleaning device, which comprises a boiler body and a frame body vertically and fixedly placing the boiler body, wherein the boiler body is provided with a first flue gas channel and a second flue gas channel, and the first flue gas channel is sequentially provided with a flue gas inlet, a high-pressure superheater and a five-stage high-pressure evaporator from top to bottom; the second flue gas channel is sequentially provided with a high-pressure economizer, a three-stage low-pressure evaporator and a flue gas outlet from bottom to top; the high-pressure superheater, the five-stage high-pressure evaporator, the high-pressure economizer and the three-stage low-pressure evaporator are all provided with heating surface pipes, and the bottom of each heating surface pipe is provided with a vibration ash removal device. The rapping ash removal device comprises a motor transmission mechanism, a rapping hammer mechanism and a rapping rod mechanism; the motor transmission mechanism drives the rapping hammer mechanism to beat the rapping rod mechanism with frequency. The utility model discloses effectively solve SP boiler heating surface pipe deposition, SP boiler heating surface pipe heat exchange efficiency hangs down the problem, effectively improves heating surface pipe deashing effect, improves the thermal efficiency of boiler body greatly.

Description

SP boiler with rapping dust-cleaning device

Technical Field

The utility model relates to a waste heat boiler technical field specifically is a SP boiler with rapping dust removal device.

Background

Under the condition of outstanding energy supply and demand contradictions at home and abroad, energy conservation and consumption reduction become the problems which must be completed in the cement industry, and the problem is well solved by the pure medium-low temperature waste heat recovery technology of the cement kiln. In the pure medium and low temperature waste heat recovery field of cement kiln, waste heat boiler is key equipment, and waste heat boiler's design is more important, and it not only is concerned with the recovery efficiency of cement kiln waste heat recovery system to cement production line waste heat, also is concerned with whether the waste heat recovery system can stably high-efficiently operate for a long time simultaneously.

In the cement production process, the flue gas discharged by the kiln tail preheater has low grade, large flow, high dust concentration, larger dust concentration (about 100g/Nm & lt 3 & gt) in the waste gas and stronger dust adhesion. In order to recover the waste heat of the low-grade waste gas, a kiln tail waste heat boiler (SP furnace for short) is arranged at the kiln tail. The bypass air-bleeding flue gas taken out from the tail smoke chamber of the cement kiln has relatively high taste, medium flow, high dust concentration, extremely high dust concentration (about 500g/Nm & lt 3 & gt) in the waste gas and strong dust adhesion, and the outer surface of the heating surface tube is easy to accumulate dust, so that the heat exchange efficiency of the heating surface tube of the boiler is reduced after more dust is accumulated, and the output of the boiler is reduced, therefore, the problem of good dust accumulation on the heating surface of the boiler is basically solved.

In order to solve the above problems, workers in the field have made various studies on waste heat boilers with rapping ash-cleaning devices: chinese patent publication No. CN107654985A discloses a novel cement kiln tail exhaust-heat boiler, which is characterized in that: the waste heat boiler is of a vertical structure, a superheater is arranged at an upper waste gas inlet of the waste heat boiler, the superheater is sequentially connected with a first evaporator, a second evaporator and a third evaporator from top to bottom through headers, and the third evaporator is connected with a waste gas outlet. By adopting the structure, the invention reasonably improves the structural design of the boiler and reduces the steel consumption of the boiler body on the premise of ensuring the thermal efficiency of the boiler, thereby achieving the purposes of reducing the boiler cost and bringing market competitive advantage to products. However, in the technical scheme, the rapping hammer is driven by the motor, the simple rigid connection structure has larger knocking damage to equipment in the rapping process, and the dust removing effect is not good.

There is therefore a need for further improvements in SP boilers to address the above problems.

Disclosure of Invention

The purpose of the application is: lie in solving and overcoming prior art and using not enough, provide an SP boiler with shake and beat ash removal device, effectively solve the SP boiler and be heated the face pipe deposition, the SP boiler is heated the problem that face pipe heat exchange efficiency is low, effectively improves the face pipe deashing effect of being heated, improves the thermal efficiency of boiler body greatly.

The SP boiler with the rapping dust-cleaning device comprises a boiler body and a frame body for vertically and fixedly placing the boiler body, and is characterized in that the boiler body is provided with a first flue gas channel and a second flue gas channel, and the first flue gas channel is sequentially provided with a flue gas inlet, a high-pressure superheater and a five-stage high-pressure evaporator from top to bottom; the second flue gas channel is sequentially provided with a high-pressure economizer, a three-stage low-pressure evaporator and a flue gas outlet from bottom to top; the high-pressure superheater, the five-stage high-pressure evaporator, the high-pressure economizer and the three-stage low-pressure evaporator are all provided with heating surface pipes, and the bottoms of the heating surface pipes are provided with vibrating ash removal devices.

Preferably, the rapping dust removal device comprises a motor transmission mechanism, a rapping hammer mechanism and a rapping rod mechanism; the motor transmission mechanism drives the rapping hammer mechanism to beat the rapping rod mechanism with frequency.

Preferably, motor drive includes motor, drive sprocket, driven sprocket and main shaft, drive sprocket installs on the motor rotation axis, drive sprocket pass through the chain with driven sprocket connects, driven sprocket installs at the main shaft.

Preferably, the rapping hammer mechanism comprises a vibration hammer and a connecting rod, and the vibration hammer and the connecting rod are mutually connected through a pin shaft and are fixed through nuts.

Preferably, the rapping bar mechanism comprises a rapping bar in contact with the comb-shaped plate, the rapping bar penetrates through the wall surface of the heat preservation box body and is provided with a sealing device, the sealing device comprises a guide sleeve fixed on the wall surface of the heat preservation box body, the rapping bar penetrates through the guide sleeve, and one end of the guide sleeve is provided with an elastic rapping bar device. The elastic vibration rod device comprises a spiral spring, the outer surface of the vibration rod is sleeved with the spiral spring, a baffle ring is arranged on one side of the elastic vibration rod device, and the baffle ring is fixedly connected with the vibration rod.

Preferably, the heated surface pipe is suspended and installed on the frame body cross beam through a suspension mechanism; the suspension mechanism comprises a suspension seat, a connecting plate and a shaft assembly; the hanger seat with support body crossbeam fixed connection, connecting plate one end is connected with the hanger seat through the axle subassembly, and the other end then is connected with the clamp horse device that is used for the centre gripping installation to receive the hot face pipe through the axle subassembly.

Preferably, ash hoppers are arranged at the bottoms of the first flue gas channel and the second flue gas channel.

Preferably, the five-stage high-pressure evaporator is five longitudinally-arranged high-pressure evaporators, and the three-stage low-pressure evaporator is three longitudinally-arranged low-pressure evaporators.

Compared with the prior art, the application has the following obvious advantages and effects:

1. the utility model discloses in, shake and beat ash handling equipment include motor drive mechanism, shake and beat hammer mechanism and shake and beat the pole mechanism, and motor drive mechanism drives and shakes and beat hammer mechanism and beat and shake the pole mechanism with frequency. The vibrating rod is connected to the outer end of the boiler through the vibrating rod, and is continuously knocked by the vibrating hammer mechanism, and the vibrating rod inside vibrates the bottom of the duct piece, so that the whole heated surface pipe vibrates to drop accumulated dust on the outer surface of the pipe wall.

2. The utility model discloses in, can receive to shake the beating rod and hit and beat and rock through suspending in midair the mechanism heated face pipe, effectively improve the deashing effect of rapping ash removal device, improve the thermal efficiency of boiler body greatly.

Drawings

Fig. 1 is a diagram of the overall structural arrangement of the present application.

Fig. 2 is a schematic view of the position of the rapping ash-cleaning device and the suspension mechanism in the present application.

Fig. 3 is a schematic view of the construction of the rapping ash-cleaning device in the present application.

Fig. 4 is a schematic structural diagram of a rapping hammer mechanism and a rapping bar mechanism in the present application.

Fig. 5 is a top view of the rapping ash device in this application.

Fig. 6 is a schematic view of the structure of the suspension mechanism in the present application.

Fig. 7 is a side view of the suspension mechanism of the present application.

Reference numbers in this application:

the boiler comprises a boiler body 100, a frame body 200, a frame body cross beam 201, a first flue gas channel 1, a flue gas inlet 11, a high-pressure superheater 12, a five-stage high-pressure evaporator 13, a second flue gas channel 2, a high-pressure economizer 21, a three-stage low-pressure evaporator 22, a flue gas outlet 23, an ash hopper 3, a heated surface pipe 4, a rapping dust removal device 5, a motor transmission mechanism 51, a motor 511, a driving sprocket 512, a driven sprocket 513, a chain 514, a main shaft 515, a rapping hammer mechanism 52, a vibrating hammer 521, a connecting rod 522, a pin shaft 523, a rapping rod mechanism 53, an internal rapping rod 531, an external rapping rod 532, a heat preservation box 534, a sealing device 535, a guide sleeve 536, an elastic rapping rod device 537, a spiral spring 5371, a baffle ring 538, a suspension mechanism 6, a hanging seat 61, a connecting plate 62, a shaft assembly 63 and a horse clamping device 64.

Detailed Description

Specific embodiments thereof are described below in conjunction with the following description and the accompanying drawings to teach those skilled in the art how to make and use the best mode of the present application. For the purpose of teaching application principles, the following conventional aspects have been simplified or omitted. Those skilled in the art will appreciate variations from these embodiments that fall within the scope of the present application. Those skilled in the art will appreciate that the features described below can be combined in various ways to form multiple variations of the present application. In the present application, the terms "upper", "lower", "left", "right", "middle" and "one" are used for descriptive purposes only and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms should be construed as the scope of the present invention without substantial change in the technical content. Thus, the present application is not limited to the specific embodiments described below, but only by the claims and their equivalents.

Fig. 1 to 7 show that, a specific embodiment of the SP boiler with the rapping dust-cleaning device 5 of the present application includes a boiler body 100 and a frame body 200 for vertically and fixedly placing the boiler body 100, the boiler body 100 is provided with a first flue gas channel 1 and a second flue gas channel 2, the first flue gas channel 1 is sequentially provided with a flue gas inlet 11, a high-pressure superheater 12 and a five-stage high-pressure evaporator 13 from top to bottom; the second flue gas channel 2 is sequentially provided with a high-pressure economizer 21, a three-stage low-pressure evaporator 22 and a flue gas outlet 23 from bottom to top; the high-pressure superheater 12, the five-stage high-pressure evaporator 13, the high-pressure economizer 21 and the three-stage low-pressure evaporator 22 are all provided with a heated surface pipe 4, and the bottom of the heated surface pipe 4 is provided with a rapping dust-cleaning device 5. The rapping dust removal device comprises a motor 511 transmission mechanism 51, a rapping hammer mechanism 52 and a rapping rod mechanism 53; the motor drive mechanism drives the rapping hammer mechanism 52 to strike the rapping bar mechanism 53 with a frequency. The utility model discloses effectively solve the SP boiler and be heated 4 deposition on the face pipe, the SP boiler is heated 4 low heat exchange efficiency's of face pipe problem, effectively improves the 4 deashing effects of face pipe of being heated, improves the thermal efficiency of boiler body 100 greatly.

As shown in fig. 1, in the embodiment of the present application, an SP boiler with a rapping dust-cleaning device 5 comprises a boiler body 100 and a frame body 200 for vertically and fixedly placing the boiler body 100, wherein the boiler body 100 is provided with a first flue gas channel 1 and a second flue gas channel 2, and the first flue gas channel 1 is sequentially provided with a flue gas inlet 11, a high-pressure superheater 12 and a five-stage high-pressure evaporator 13 from top to bottom; the five-stage high-pressure evaporator 13 is five longitudinally arranged high-pressure evaporators, and the second flue gas channel 2 is sequentially provided with a high-pressure economizer 21, a three-stage low-pressure evaporator 22 and a flue gas outlet 23 from bottom to top. The three-stage low-pressure evaporator 22 is three longitudinally arranged low-pressure evaporators. The high-pressure superheater 12, the five-stage high-pressure evaporator 13, the high-pressure economizer 21 and the three-stage low-pressure evaporator 22 are all provided with heated surface pipes 4, and ash hoppers 3 are arranged at the bottoms of the first flue gas channel 1 and the second flue gas channel 2. Through the arrangement of the high-pressure superheater 12, the five-stage high-pressure evaporator 13, the high-pressure economizer 21 and the three-stage low-pressure evaporator 22, the heat exchange area is increased, and the recovery efficiency of the waste heat of the cement production line is improved.

Specifically, as shown in fig. 2 and 3, in the embodiment of the present application, a rapping dust-removing device 5 is disposed at the bottom of the heated surface tube 4, and the rapping dust-removing device includes a motor 511 transmission mechanism 51, a rapping hammer mechanism 52, and a rapping rod mechanism 53; the motor drive mechanism drives the rapping hammer mechanism 52 to strike the rapping bar mechanism 53 with a frequency. The rapping bar is connected to the outer end part of the boiler through the rapping bar, and is continuously knocked by the rapping hammer mechanism 52, and the inner rapping bar 531 vibrates the bottom of the pipe piece, so that the whole heated surface pipe 4 vibrates to drop accumulated dust on the outer surface of the pipe wall.

It should be noted that, as shown in fig. 3 to fig. 5, in the embodiment of the present application, the motor 511 and the transmission mechanism 51 include a motor 511, a driving sprocket 512, a driven sprocket 513 and a main shaft 515, the driving sprocket 512 is mounted on a rotating shaft of the motor 511, the driving sprocket 512 is connected with the driven sprocket 513 through a chain 514, the driven sprocket 513 is mounted on the main shaft 515, and the main shaft 515 is supported by two bearing seats. The rapping hammer mechanism 52 includes a vibration hammer 521 and a link 522, and the vibration hammer 521 and the link 522 are coupled to each other by a pin 523 and fixed by a nut. One end of the connecting rod 522 is fixedly connected with the main shaft 515 through a nut. The rapping bar mechanism 53 includes an inner rapping bar 531, an outer rapping bar 532, the inner rapping bar 531 being mounted at the bottom of the heated surface tube 4; the external rapping bar 532 penetrates through the wall surface of the insulated box body 534 and is provided with a sealing device 535, the sealing device 535 comprises a guide sleeve 536 fixed on the wall surface of the insulated box body 534, the external rapping bar 532 penetrates through the guide sleeve 536, one end of the guide sleeve 536 is provided with an elastic rapping bar device 537, the elastic rapping bar device 537 comprises a spiral spring 5371, the spiral spring 5371 is sleeved on the outer surface of the external rapping bar 532, one side of the elastic rapping bar device 537 is provided with a baffle ring 538, and the baffle ring 538 is fixedly connected with the external rapping bar 532. The motor 511 is a variable frequency motor 511, the motor 511 drives the main shaft 515 to rotate, the rapping hammer mechanism 52 connected with the main shaft 515 strikes the rapping rod mechanism 53, the rapping rod mechanism 53 is provided with an elastic rapping rod device 537, and the rapping rod is reset in time after one rapping is completed so as to prepare for the next rapping transmission.

It should be noted that, as shown in fig. 6 and 7, in the present embodiment, the heated surface pipe 4 is mounted on the frame body cross member 201 by being suspended by the suspension mechanism 6; the suspension mechanism 6 comprises a suspension base 61, a connecting plate and a shaft assembly 63; the hanging seat 61 is fixedly connected with the frame body cross beam 201, one end of the connecting plate is connected with the hanging seat 61 through the shaft assembly 63, the other end of the connecting plate is connected with the horse clamping device 64 for clamping and installing the heated surface tube 4 through the shaft assembly 63, and the horse clamping device 64 is hung on the shaft assembly 63 of the hanging mechanism 6 through a circular groove at the top end of the horse clamping device 64. The heated surface pipe 4 can receive the beating of the rapping rod to shake through the suspension mechanism 6, so that the ash removal effect of the rapping ash removal device 5 is effectively improved, and the heat efficiency of the boiler body 100 is greatly improved.

The utility model discloses when using: firstly, the motor 511 drives the main shaft 515 to rotate, the rapping hammer mechanism 52 connected with the main shaft 515 performs frequency rapping on the rapping rod mechanism 53, the rapping rod is struck to further enable the heated surface tube 4 to vibrate at a certain frequency, dust adhered to the heated surface tube is shaken off, the rapping frequency is 3 times per minute, and the impact force is 1500N. The heated surface pipe 4 is suspended and installed on the frame body beam 201 through the suspension mechanism 6; the suspension mechanism 6 comprises a suspension base 61, a connecting plate and a shaft assembly 63; the hanging seat 61 is fixedly connected with the frame body cross beam 201, one end of the connecting plate is connected with the hanging seat 61 through a shaft assembly 63, the other end of the connecting plate is connected with a horse clamping device 64 used for clamping and installing the heated surface tube 4 through the shaft assembly 63, and the horse clamping device 64 is suspended on the shaft assembly 63 of the suspension mechanism 6 through a circular groove at the top end of the horse clamping device 64. The heating surface pipe 4 can receive the striking of the rapping rod through the suspension mechanism 6 to shake, so that the ash removal effect of the rapping ash removal device 5 is effectively improved, and the heat efficiency of the boiler body 100 is greatly improved. The utility model discloses effectively solve the SP boiler and be heated 4 deposition on the face pipe, the SP boiler is heated 4 low heat exchange efficiency's of face pipe problem, effectively improves the 4 deashing effects of face pipe of being heated, improves the thermal efficiency of boiler body 100 greatly.

Since any modifications, equivalents, improvements, etc. made within the spirit and principles of the application may readily occur to those skilled in the art, it is intended to be included within the scope of the claims of this application.

Claims

1. The SP boiler with the rapping dust removal device comprises a boiler body and a frame body for vertically and fixedly placing the boiler body, and is characterized in that the boiler body is provided with a first flue gas channel and a second flue gas channel, and the first flue gas channel is sequentially provided with a flue gas inlet, a high-pressure superheater and a five-stage high-pressure evaporator from top to bottom; the second flue gas channel is sequentially provided with a high-pressure economizer, a three-stage low-pressure evaporator and a flue gas outlet from bottom to top; the high-pressure superheater, the five-stage high-pressure evaporator, the high-pressure economizer and the three-stage low-pressure evaporator are all provided with heating surface pipes, and the bottoms of the heating surface pipes are provided with vibrating ash removal devices.

2. An SP boiler with a rapping ash removal device as defined in claim 1, characterized in that: the rapping ash removal device comprises a motor transmission mechanism, a rapping hammer mechanism and a rapping rod mechanism; the motor transmission mechanism drives the rapping hammer mechanism to beat the rapping rod mechanism with frequency.

3. An SP boiler with a rapping ash removal device as defined in claim 2, characterized in that: the motor transmission mechanism comprises a motor, a driving chain wheel, a driven chain wheel and a main shaft, wherein the driving chain wheel is installed on a motor rotating shaft, the driving chain wheel is connected with the driven chain wheel through a chain, and the driven chain wheel is installed on the main shaft.

4. An SP boiler with a rapping ash removal device as defined in claim 2, characterized in that: the rapping hammer mechanism comprises a vibrating hammer and a connecting rod, wherein the vibrating hammer and the connecting rod are mutually connected through a pin shaft and are fixed through nuts.

5. An SP boiler with a rapping ash removal device as defined in claim 2, characterized in that: the rapping bar mechanism comprises an internal rapping bar and an external rapping bar, and the internal rapping bar is arranged at the bottom of the heated surface tube; the external rapping bar penetrates through the wall surface of the heat preservation box body and is provided with a sealing device, the sealing device comprises a guide sleeve fixed on the wall surface of the heat preservation box body, the external rapping bar penetrates through the guide sleeve, one end of the guide sleeve is provided with an elastic rapping bar device, the elastic rapping bar device comprises a spiral spring, the spiral spring sleeve is arranged on the outer surface of the external rapping bar, one side of the elastic rapping bar device is provided with a baffle ring, and the baffle ring is fixedly connected with the external rapping bar.

6. An SP boiler with a rapping ash removal device as defined in claim 1, wherein: the heated surface pipe is suspended and installed on the frame body beam through a suspension mechanism; the suspension mechanism comprises a suspension seat, a connecting plate and a shaft assembly; the hanger base is fixedly connected with the frame body cross beam, one end of the connecting plate is connected with the hanger base through the shaft assembly, and the other end of the connecting plate is connected with the horse clamping device used for clamping and installing the heated surface tube through the shaft assembly.

7. An SP boiler with a rapping ash removal device as defined in claim 1, characterized in that: and ash hoppers are arranged at the bottoms of the first flue gas channel and the second flue gas channel.

8. An SP boiler with a rapping ash removal device as defined in claim 1, wherein: the five-stage high-pressure evaporator is five longitudinally-arranged high-pressure evaporators, and the three-stage low-pressure evaporator is three longitudinally-arranged low-pressure evaporators.