CN211668342U - Non-stop online cleaning device applied to rotary heat exchanger - Google Patents
Non-stop online cleaning device applied to rotary heat exchanger Download PDFInfo
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- CN211668342U CN211668342U CN201922483370.6U CN201922483370U CN211668342U CN 211668342 U CN211668342 U CN 211668342U CN 201922483370 U CN201922483370 U CN 201922483370U CN 211668342 U CN211668342 U CN 211668342U
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Abstract
The application discloses be applied to online belt cleaning device of not shutting down of rotation heat exchanger, including support frame and control box, install motor and gearbox in one side of support frame, it is connected with driving shaft and driven shaft all to rotate on the relative lateral wall in the support frame, the one end of driving shaft and the output shaft fixed connection of gearbox, correspond on the driving shaft and the driven shaft and install the action wheel and follow the driving wheel, pass through the chain connection between action wheel and the driven wheel, the support frame runs through along length direction and is equipped with the steel pipe of establishing the water pipe in having, the steel pipe with owner, the driven shaft contact, the end of intaking of water pipe is connected with the high-pressure pump, the shower nozzle is installed perpendicularly to the play water end. When the device is installed on site, the motor and the gearbox can be controlled by the control box to work, the steel pipe is finally moved, the whole surface of the rotary heat exchanger is cleaned by the spray head, the cleaning effect can be improved, online automatic cleaning can be realized when the unit is not stopped, and the production efficiency is high.
Description
Technical Field
The application relates to the application field of rotary heat exchangers, in particular to a non-stop online cleaning device applied to a rotary heat exchanger.
Background
The thermal power plant is a plant for producing electric energy by using combustible materials (such as coal) as fuels, the problems of scaling and ash blockage of a rotary heat exchanger and a rotary gas-gas heat exchanger (GGH) can be inevitably caused in the production process, so that the pressure difference of a heat storage element of the rotary heat exchanger is increased, an induced draft fan surges and shakes and the like, particularly after a pin removal device is additionally arranged in the environment-friendly reconstruction process, the scale formation phenomenon of the rotary heat exchanger is more frequent and serious due to improper control of the pin removal process, and the heat storage element is required to be cleaned in order to ensure safe and efficient operation of a dredging unit.
However, at present, before cleaning the heat storage elements of the rotary heat exchanger and the GGH heat storage elements in the thermal power plant, the unit needs to be shut down, and then manual offline cleaning is carried out; although some enterprises adopt a semi-automatic cleaning mode later along with the technical progress, before the automatic cleaning mode is adopted, the unit still needs to be stopped, then a supporting part or a rail is additionally arranged at the lower part of the rotary heat exchanger in advance, or a steel pipe structure is used for welding, supporting and advancing, 2-4 spray heads are arranged, and the rotary heat exchanger is large in size and heavy in weight, or a special steel structure platform needs to be erected on site. The existing cleaning mode needs to stop the unit before cleaning, so that the production efficiency is influenced, the cleaning is not thorough due to the stroke problem, more flow of a nozzle is difficult to control, cleaning accidents are easy to cause, and particularly when the rotary heat exchanger is cleaned, the problems of water accumulation of the rotary heat exchanger, electric dust removal, vehicle jumping and the like are often caused.
Therefore, the problem that how to realize the online automatic cleaning of the rotary heat exchanger under the condition that the unit does not stop is a problem to be solved urgently by the technical personnel in the field.
SUMMERY OF THE UTILITY MODEL
The application provides a be applied to rotary heat exchanger's online belt cleaning device that does not shut down has solved how to realize carrying out self-cleaning's problem to rotary heat exchanger under the condition that the unit does not shut down among the prior art.
In order to solve the technical problem, the application provides a non-stop online cleaning device applied to a rotary heat exchanger, which comprises:
the automatic water supply device comprises a support frame and a control box, wherein a motor and a gearbox are installed on one side of the support frame, the motor is electrically connected with the control box, the motor is in transmission connection with the gearbox, a driving shaft and a driven shaft are connected to opposite side walls in the support frame in a rotating mode, one end of the driving shaft is fixedly connected with an output shaft of the gearbox, the driven shaft penetrates through one side of the outer portion of the support frame, a driving wheel is installed on the driving shaft, a driven wheel is installed on the driven shaft, the driving wheel is connected with the driven wheel through a chain, a steel pipe penetrates through the support frame in the length direction, the steel pipe is in contact with the driving shaft and the driven shaft, a water pipe penetrates through the steel pipe, the water inlet end of the water pipe is connected with a high-pressure pump, a spray, and a support rod is fixed at the bottom of the support frame.
Preferably, a driven wheel is further mounted on the upper portion of the inner side of the support frame, and the steel pipe is in contact with the driven wheel.
Preferably, the number of the driven wheels is 2.
Preferably, the motor is a 86 series servo motor or a 86 series stepper motor.
Preferably, the number of the supporting rods is 2.
Compared with the prior art, the utility model provides a be applied to online belt cleaning device of not shutting down of rotation heat exchanger, including support frame and control box, motor and gearbox are installed to one side of support frame, the motor is connected with the control box electricity, the motor is connected with the gearbox transmission, it is connected with driving shaft and driven shaft all to rotate on the relative lateral wall in the support frame, the one end of driving shaft and the output shaft fixed connection of gearbox, the driven shaft runs through to outside one side of support frame, install the action wheel on the driving shaft, install from the driving wheel on the driven shaft, pass through the chain connection between action wheel and the follow driving wheel, the support frame has run through the steel pipe along length direction, steel pipe and driving shaft and driven shaft contact, it has the water pipe to run through in the steel pipe, the end of intaking of water pipe is connected with the high-pressure pump. Therefore, in practical application, the device can be installed in an on-site unit, corresponding technical parameters can be set through the control box, the motor and the gearbox are controlled to work, the driving shaft and the driven shaft are driven to rotate, the steel pipe is made to move along the length direction of the supporting frame, the whole surface of the rotary heat exchanger is cleaned through the spray head, the cleaning effect can be improved, the cleaning device is utilized, the unit does not need to be stopped, online automatic cleaning is achieved, and production efficiency can be improved.
Drawings
In order to more clearly explain the technical solution of the present application, the drawings needed to be used in the embodiments are briefly described below, and it is obvious to those skilled in the art that other drawings can be obtained according to the drawings without making any inventive changes.
Fig. 1 is a schematic structural view of a non-stop online cleaning device applied to a rotary heat exchanger according to an embodiment of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be described clearly and completely with reference to the accompanying drawings.
The core of the application is to provide a non-stop online cleaning device applied to the rotary heat exchanger, and the problem of how to realize automatic cleaning of the rotary heat exchanger under the condition that a unit does not stop in the prior art can be solved.
In actual production, each boiler is generally provided with 2 rotary heat exchangers, for example, a certain 600MW thermal power generating unit, and two three-bin rotary heat exchangers are arranged, the diameter of a rotor of each rotary heat exchanger is 14236mm, the total height of each heat storage element is 2300mm, and the rotating speed is 1.05 r/min. Rotary heat exchanger airflow arrangement: the smoke is downward, and the air is upward; the rotating direction is as follows: flue gas/secondary air/primary air. After the denitration SCR normally operates, the operating environment of the rotary heat exchanger can change, and because the ammonia escape amount exceeds the standard, a cold-end heat exchange element of the rotary heat exchanger can generate ammonium bisulfate crystals, and the ammonium bisulfate crystals can form scale formation in a low-temperature section after being mixed with flue gas, so that the operating time of a differential pressure random group of the rotary heat exchanger continuously rises. When the differential pressure of a common rotary heat exchanger reaches about 2.5KPa, the high load capacity of a boiler is limited by the differential pressure of the rotary heat exchanger, and a series of related phenomena such as unit load limitation, hearth pressure rise, surge of a booster fan and the like occur, so that the safe operation risk of the unit is increased, and the rotary heat exchanger needs to be cleaned in time.
Fig. 1 is a schematic structural view of a non-stop online cleaning device applied to a rotary heat exchanger, as shown in fig. 1, including:
support frame 1 and control box 2, motor 3 and gearbox 4 are installed to one side of support frame 1, motor 3 is connected with 4 electricity in the control box, motor 3 is connected with 4 transmissions in gearbox, it is connected with driving shaft 5 and driven shaft 6 all to rotate on the relative lateral wall in the support frame 1, the one end of driving shaft 5 and the output shaft fixed connection of gearbox 4, driven shaft 6 runs through to outside one side of support frame 1, install the action wheel on the driving shaft 5, install from the driving wheel on the driven shaft 6, the action wheel is connected through chain 7 with from between the driving wheel, support frame 1 has steel pipe 8 along length direction running through, steel pipe 8 and driving shaft 5 and driven shaft 6 contact, it has water pipe 9 to run through in the steel pipe 8, the end of intaking of water pipe 9 is connected with high-pressure pump 10, shower nozzle 11 is installed perpendicularly to the play water end of water pipe 9, shower nozzle.
Specifically, as shown in fig. 1, support frame 1 is the cuboid hollow structure that is formed by the steel sheet welding, and the welding of one side of support frame 1 has motor 3 and gearbox 4, and motor 3 is direct to be connected with control box 2 electricity, and integrated parts such as motor digital controller, motor drive and power module and the button that corresponds in the control box 2, control box 2 are current device, and prior art can be referred to specific structure and principle, the utility model discloses do not limit. The motor may preferably be an 86 series servo motor or an 86 series stepper motor. Specifically, a 86HB250-80BJ motor can be selected. The motor 3 can be controlled to rotate by the control box 2, the motor 3 is rotationally connected with the gearbox 4, the driving shaft 5 arranged on the opposite side wall in the support frame 1 is fixedly connected with an output shaft of the gearbox 4, the driving shaft 5 can be driven to rotate by the gearbox 4, one end of the driving shaft 5 far away from the gearbox 4 is provided with a driving wheel, the driven wheel is arranged on the driven shaft 6, the driving wheel is connected with the driven wheel by a chain 7, the driven wheel and the driven shaft 6 can be driven to rotate by the chain 7 while the driving wheel rotates, the support rod 1 is penetrated with a steel pipe 8 along the length direction, the steel pipe 8 is directly contacted with the driving shaft 5 and the driven shaft 6, the steel pipe 8 can be driven to move while the driving shaft 5 and the driven shaft 6 rotate, a water pipe 9 is arranged in the steel pipe 8, the water inlet end of, and the shower nozzle 11 and one end fixed connection of steel pipe 8, that is to say steel pipe 8 and shower nozzle 11 move simultaneously, and the bottom of support frame 1 is still fixed with bracing piece 12, can be used for the field installation of belt cleaning device. Preferably, 2 support rods 12 may be provided. After the rotary heat exchanger is actually installed, program parameters are modified through a control box panel according to the requirements of a cleaning scheme, the cleaning device can be started by operating corresponding buttons on the control box 2, and the whole surface of the rotary heat exchanger is cleaned in a mode of moving the steel pipe 8.
In order to reduce the friction between the steel pipe 8 and the upper part of the support frame 1 and improve the moving efficiency of the steel pipe 8, as a preferred embodiment, a driven wheel is further installed on the inner upper part of the support frame 1, and the steel pipe 8 is in direct contact with the driven wheel, which is not shown in fig. 1. In order to further reduce the friction between the steel pipe 8 and the upper part of the support frame 1, the number of the driven wheels is preferably 2.
Because the rotary heat exchanger is generally in a two-bin or three-bin type, two kinds of cold and hot air exchange heat through the continuously rotating heat storage element. For example, a rotary air preheater arranged in a flue gas system of a thermal power plant is a rotary heat exchanger, wherein a medium on a wind side is air and finally enters a hearth for combustion supporting, and flue gas generated after coal combustion flows through a heat storage element of the rotary heat exchanger from top to bottom and is discharged from a chimney after passing through equipment such as electric dust removal and the like. In practical application, the non-stop online cleaning device in the embodiment of the present application is installed at the cold end of the flue gas side of the rotary heat exchanger, and specifically, the non-stop online cleaning device in the embodiment of the present application may be installed at the cold end of the flue gas side of the rotary heat exchanger through the support rod 12, the external support, and the like. All connections need to be connected firmly, so that the connection is firm, reliable and free of deformation in the using process.
In practical application, experiments prove that the cleaning water pressure is finally determined to be 30MPa-100MPa by applying the non-stop online cleaning device in the embodiment of the application, namely the water pressure of the selected high-pressure pump 10 is required to be 30MPa-100MPa, and the cleaning effect can be stabilized after 24 hours of cleaning.
The cleaning device provided by the embodiment of the application has the characteristics of good effect, high speed, no influence on unit load and the like
The application provides a be applied to rotation heat exchanger's online belt cleaning device that does not shut down, including support frame and control box, motor and gearbox are installed to one side of support frame, and the motor is connected with the control box electricity, and the motor is connected with the gearbox transmission, on the relative lateral wall in the support frameAre all rotationally connectedThere are driving shaft and driven shaft, the one end of driving shaft and the output shaft fixed connection of gearbox, the driven shaft runs through to the outside one side of support frame, install the action wheel on the driving shaft, install from the driving wheel on the driven shaft, pass through the chain connection between action wheel and the follow driving wheel, the support frame has run through the steel pipe along length direction, the steel pipe has contacted with driving shaft and driven shaft, it has the water pipe to run through in the steel pipe, the end of intaking of water pipe is connected with the high-pressure pump, the shower nozzle is installed perpendicularly to the play water end of water pipe, the shower nozzle is fixed. It follows that, in practiceIn using, can install the device in on-the-spot unit, the accessible control box sets up corresponding technical parameter to control motor and gearbox work, and then drive driving shaft and driven shaft and rotate, make the steel pipe remove along the length direction of support frame, and then wash rotary heat exchanger's whole surface through the shower nozzle, can improve the cleaning performance, and utilize this belt cleaning device, need not to carry out the shut down processing to the unit, realize online self-cleaning, can improve production efficiency.
Other embodiments of the present application will be apparent to those skilled in the art from consideration of the specification and practice of the application disclosed herein. This application is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the application and including such departures from the present disclosure as come within known or customary practice in the art to which the invention pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope of the disclosure being indicated by the following claims.
It will be understood that the present application is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The above embodiments of the present application do not limit the scope of the present application.
Claims (5)
1. The utility model provides a be applied to not shut down on-line cleaning device of rotation heat exchanger which characterized in that includes:
the automatic water supply device comprises a support frame and a control box, wherein a motor and a gearbox are installed on one side of the support frame, the motor is electrically connected with the control box, the motor is in transmission connection with the gearbox, a driving shaft and a driven shaft are connected to opposite side walls in the support frame in a rotating mode, one end of the driving shaft is fixedly connected with an output shaft of the gearbox, the driven shaft penetrates through one side of the outer portion of the support frame, a driving wheel is installed on the driving shaft, a driven wheel is installed on the driven shaft, the driving wheel is connected with the driven wheel through a chain, a steel pipe penetrates through the support frame in the length direction, the steel pipe is in contact with the driving shaft and the driven shaft, a water pipe penetrates through the steel pipe, the water inlet end of the water pipe is connected with a high-pressure pump, a spray, and a support rod is fixed at the bottom of the support frame.
2. The non-stop online cleaning device applied to the rotary heat exchanger as claimed in claim 1, wherein a driven wheel is further installed on the upper part of the inner side of the support frame, and the steel pipe is in contact with the driven wheel.
3. The non-stop on-line cleaning device applied to rotary heat exchanger as claimed in claim 2, wherein the number of the driven wheels is 2.
4. The non-stop on-line cleaning device applied to rotary heat exchanger according to claim 2, wherein the motor is 86 series servo motor or 86 series stepping motor.
5. The non-stop on-line cleaning device applied to the rotary heat exchanger as claimed in claim 1, wherein the number of the support rods is 2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922483370.6U CN211668342U (en) | 2019-12-31 | 2019-12-31 | Non-stop online cleaning device applied to rotary heat exchanger |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922483370.6U CN211668342U (en) | 2019-12-31 | 2019-12-31 | Non-stop online cleaning device applied to rotary heat exchanger |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211668342U true CN211668342U (en) | 2020-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922483370.6U Active CN211668342U (en) | 2019-12-31 | 2019-12-31 | Non-stop online cleaning device applied to rotary heat exchanger |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211668342U (en) |
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2019
- 2019-12-31 CN CN201922483370.6U patent/CN211668342U/en active Active
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