CN217076249U - Pneumatic conveying device for ash conveying system - Google Patents
Pneumatic conveying device for ash conveying system Download PDFInfo
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- CN217076249U CN217076249U CN202220743507.6U CN202220743507U CN217076249U CN 217076249 U CN217076249 U CN 217076249U CN 202220743507 U CN202220743507 U CN 202220743507U CN 217076249 U CN217076249 U CN 217076249U
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Abstract
The utility model provides a pneumatic conveyor for defeated ash system, pneumatic conveyor includes: a gas source; the gas conveying pipe comprises a gas conveying main pipe and a gas conveying branch pipe, one end of the gas conveying main pipe is communicated with the output end of the gas source, the other end of the gas conveying main pipe is closed, one end of the gas conveying branch pipe is communicated with the gas conveying main pipe, and the other end of the gas conveying branch pipe is communicated with an ash conveying pipe of the ash conveying system; the pressure acquisition device is arranged on the ash conveying pipe of the ash conveying system and used for acquiring the pressure in the ash conveying pipe; the air inlet valve is arranged on the air conveying pipe and used for adjusting the pressure of the air conveyed into the ash conveying pipe; and the PLC is respectively connected with the pressure acquisition device and the air inlet valve, and is used for receiving the pressure data acquired by the pressure acquisition device and adjusting the air inlet valve based on the received pressure data.
Description
Technical Field
The utility model relates to an defeated grey system technical field especially relates to a pneumatic conveyor for defeated grey system.
Background
The ash conveying system uses air as a conveying medium and power to convey materials to an ash storage bin or an ash storehouse, wherein the existence of the pneumatic conveying system is particularly important. At present, the commonly used pneumatic conveying system generally adopts a mode of 'time control' and 'material level priority', namely, the conveying system operates by setting conveying time according to the operation experience of operators at ordinary times, and the ash conveying pump for alarming at high material level preferentially conveys ash.
Aiming at the existing commonly used pneumatic conveying system, the program control means is single, and the setting of key parameters such as conveying cycle time, blanking time and the like depends on the experience and responsibility of operators; the power plant with stable coal types and stable unit load is simple and practical, but has higher requirements on operators when complex coal types are combusted and the unit load changes greatly, and has reduced operation safety and higher operation cost; especially, at present, the intelligent power plant is gradually implemented in China, unattended operation is gradually realized, and the control mode can not meet the requirements. Therefore, on the premise of ensuring the stable operation of the ash conveying system, how to improve the safety of the ash conveying system and reduce the operation cost is an urgent technical problem to be solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a pneumatic conveyor for defeated ash system to solve the technical problem that the security that current defeated ash system exists is low and running cost is high.
According to an aspect of the utility model, a pneumatic conveyor for defeated ash system is disclosed, pneumatic conveyor includes:
a gas source;
the gas conveying pipe comprises a gas conveying main pipe and a gas conveying branch pipe, one end of the gas conveying main pipe is communicated with the output end of the gas source, the other end of the gas conveying main pipe is closed, one end of the gas conveying branch pipe is communicated with the gas conveying main pipe, and the other end of the gas conveying branch pipe is communicated with an ash conveying pipe of the ash conveying system;
the pressure acquisition device is arranged on the ash conveying pipe of the ash conveying system and used for acquiring the pressure in the ash conveying pipe;
the air inlet valve is arranged on the air conveying pipe, is positioned between the air source and the pressure acquisition device and is used for adjusting the pressure of the air conveyed into the ash conveying pipe;
and the PLC is respectively connected with the pressure acquisition device and the air inlet valve and is used for receiving the pressure data in the ash conveying pipe acquired by the pressure acquisition device and adjusting the size of the valve port of the air inlet valve based on the received pressure data.
The utility model discloses an in some embodiments, pressure acquisition device's quantity is a plurality of, and is a plurality of it has first distance all to separate between the pressure acquisition device, the PLC controller is with a plurality of pressure acquisition device all connects.
In some embodiments of the present invention, the pressure collecting device is a pressure sensor.
In some embodiments of the present invention, the number of the gas conveying branch pipes is plural, and plural the gas conveying branch pipes are arranged in parallel and at intervals.
In some embodiments of the present invention, the pressure collecting device is equal to the number of the gas conveying branch pipes, and is multiple, the pressure collecting device is respectively disposed at a plurality of front ends of the gas conveying branch pipes.
In some embodiments of the present invention, the pneumatic conveying device further comprises an air filter, the air filter is disposed on the main pipe for conveying gas, and the air filter is located between the output end of the gas source and the air inlet valve.
In some embodiments of the present invention, the pneumatic conveying device further comprises a pressure maintaining valve located between the air filter and the air inlet valve.
In some embodiments of the present invention, the ash conveying system comprises an ash conveying pump, and the distance between the pressure collecting device and the ash conveying pump is 0.5 m-2.5 m.
In some embodiments of the present invention, the PLC controller is further connected to the ash conveying pump, and the PLC controller is configured to adjust the operation time of the ash conveying pump.
In some embodiments of the present invention, the PLC controller is an industrial personal computer.
Through utilizing the embodiment of the utility model provides an in pneumatic conveyor for defeated ash system, the beneficial effect that can obtain at least with:
this a pneumatic conveyor for defeated ash system passes through the pressure acquisition device and gathers the pressure of defeated ash pipe, and further send the pressure transmission of defeated ash pipe that pressure acquisition device gathered to the PLC controller, the valve port size of the further pressure control admission valve based on defeated ash pipe that receives of PLC controller is in order to adjust the size of admitting air to realized the automatic monitoring and the adjustment of the intraductal pressure of defeated ash, therefore need not the manual work and set for the size of admitting air, blanking time isoparametric. In addition to the above, the PLC controller is connected to the ash conveying pump to adjust the operation time of the ash conveying pump according to the received pressure data, thereby adjusting the ash conveying cycle period of the system. Therefore, the pneumatic conveying device can automatically adjust the air inlet pressure and the ash conveying cycle period of the ash conveying pipe, not only realizes unattended operation, but also improves the safety of the system, avoids the air blowing phenomenon and reduces the operation cost of the system.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
It will be appreciated by those skilled in the art that the objects and advantages that can be achieved with the present invention are not limited to the details set forth above, and that these and other objects that can be achieved with the present invention will be more clearly understood from the following detailed description.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. The components in the figures are not necessarily to scale, emphasis instead being placed upon illustrating the principles of the invention. For convenience in illustrating and describing some portions of the present invention, corresponding parts of the drawings may be exaggerated, i.e., may be larger, relative to other components in an exemplary device actually manufactured according to the present invention. In the drawings:
fig. 1 is a schematic structural view of a pneumatic conveying device for an ash conveying system according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.
It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and/or processing steps closely related to the solution according to the present invention are shown in the drawings, and other details not relevant to the present invention are omitted.
It should be emphasized that the term "comprises/comprising/comprises/having" when used herein, is taken to specify the presence of stated features, elements, steps or components, but does not preclude the presence or addition of one or more other features, elements, steps or components.
It should be noted that the terms of orientation and orientation used in the present specification are relative to the position and orientation shown in the drawings; the term "coupled" herein may mean not only directly coupled, but also indirectly coupled, in which case intermediates may be present, if not specifically stated. A direct connection is one in which two elements are connected without the aid of intermediate elements, and an indirect connection is one in which two elements are connected with the aid of other elements.
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the drawings, like reference characters designate the same or similar parts throughout the several views.
Fig. 1 is a schematic structural diagram of a pneumatic conveying device for an ash conveying system according to an embodiment of the present invention, as shown in fig. 1, the pneumatic conveying device at least includes an air source 110, an air conveying pipe, a pressure collecting device 130, an air inlet valve 140, and a PLC controller 300. The gas source 110 is used as a gas generating device of a pneumatic conveying device, the gas conveying pipe is used for further conveying gas generated by the gas generating device to the ash conveying pipe 210 so as to further convey materials in the ash conveying pipe 210 to the ash storage bin 230 or the ash storehouse, the pressure collecting device 130 is used for collecting pressure in the ash conveying pipe 210, the gas inlet valve 140 is used for controlling the size of inlet gas, and the PLC 300 is used for adjusting the conveying pressure and conveying time of the materials in the ash conveying pipe 210.
Specifically, the gas delivery pipe comprises a gas delivery main pipe 121 and a gas delivery branch pipe 122, one end of the gas delivery main pipe 121 is communicated with the output end of the gas source 110, the other end of the gas delivery main pipe 121 is closed, one end of the gas delivery branch pipe 122 is communicated with the gas delivery main pipe 121, and the other end of the gas delivery branch pipe 122 is used for being communicated with an ash delivery pipe 210 of the ash delivery system. Referring to fig. 1, the gas transmission main pipe 121 may be specifically disposed in parallel with the ash conveying pipe 210, and the gas transmission main pipe 121 is used for transmitting the gas generated by the gas generating device to the ash conveying pipe 210 through the gas transmission branch pipe 122. The pressure collecting device 130 may specifically be disposed on the ash conveying pipe 210 of the ash conveying system to collect the pressure in the ash conveying pipe 210; an air inlet valve 140 may be disposed on the air delivery pipe, and the air inlet valve 140 is located between the air source 110 and the pressure collecting device 130, for adjusting the pressure of the air delivered into the ash delivery pipe 210. The PLC controller 300 is respectively connected to the pressure collecting device 130 and the air intake valve 140, and the PLC controller 300 is configured to receive pressure data in the ash conveying pipe collected by the pressure collecting device 130, and adjust the size of the valve port of the air intake valve 140 based on the received pressure data.
In the above embodiment, the pressure collecting device 130 can collect the pressure in the ash conveying pipe 210 in real time, and the PLC controller 300 can compare the received real pressure in the ash conveying pipe 210 with a preset pressure value, and when the real pressure in the ash conveying pipe 210 is greater than the preset pressure value, the valve port of the air inlet valve 140 can be controlled to be reduced, so that the pressure in the ash conveying pipe 210 is also reduced; if the actual pressure in the ash conveying pipe 210 is less than the preset pressure value, the valve port of the air inlet valve 140 can be controlled to increase, so that the pressure conveyed into the ash conveying pipe 210 is increased.
In addition to adjusting the pressure inside the ash conveying pipe 210, the PLC 300 may also adjust the conveying time of the material inside the ash conveying pipe 210, and for example, the PLC 300 may further be connected to an ash conveying pump 220 in the ash conveying system to control the operation time of the ash conveying pump 220. For example, when the ash loading in the ash transfer pump 220 is large, the operating parameters of the ash transfer system can be determined by increasing the opening of the air intake valve 140 and increasing the operating time of the ash transfer pump 220. It should be understood that the number of the ash conveying pumps in the ash conveying system may be one or more, and when there are more, the PLC controller 300 may be connected to all of the ash conveying pumps. Furthermore, the PLC controller in the pneumatic conveying device in the embodiment of the present invention may be an industrial personal computer.
The utility model discloses an embodiment, the quantity of pressure acquisition device 130 is a plurality of, and is a plurality of all there is first distance at an interval between the pressure acquisition device 130, PLC controller 300 is with a plurality of pressure acquisition device 130 all connects. Wherein, the first distance can be set according to the length of an ash conveying pipe in the ash conveying system; in this embodiment, the plurality of pressure collecting devices 130 are arranged, and the plurality of pressure collecting devices 130 are arranged at intervals so as to more accurately detect the pressure values of each point in the ash conveying pipe 210, so that the working state of each pipe section of the ash conveying pipe 210 and the pressure of each pipe section can be conveniently judged, and a certain pipe section can be cleaned in time after being plugged, so that the safety of the system is improved, and the energy consumption in the conveying process is further reduced. Wherein, pressure acquisition device 130 is like pressure sensor, and it is not difficult to understand, pressure acquisition device 130 in the embodiment of the utility model discloses except that selecting for use pressure sensor, also can use the part or the subassembly of the pressure in other types of collection ash conveying pipe 210.
Further, the number of the gas conveying branch pipes 122 may also be multiple, and a plurality of the gas conveying branch pipes 122 are arranged in parallel and at intervals, wherein the number of the gas conveying branch pipes 122 may be equal to the number of the ash conveying pumps 220 in the ash conveying system, as shown in fig. 1, in this embodiment, four gas conveying branch pipes 122 and four ash conveying pumps 220 are provided, and each gas conveying branch pipe 122 and each ash conveying pump 220 are arranged in a one-to-one correspondence. In this embodiment, it is only a preferable example to set the number of the gas conveying branch pipes 122 and the number of the ash conveying pumps 220 to be equal, and in other examples, the number of the gas conveying branch pipes 122 and the number of the ash conveying pumps 220 can be set according to actual requirements.
When the number of the gas delivery branched pipes 122 and the number of the delivery pumps are both plural, the number of the pressure collecting devices 130 is preferably also configured to be plural, and the number of the further pressure collecting devices 130 may be equal to the number of the gas delivery branched pipes 122. At this time, the pressure collecting devices 130 may also be correspondingly disposed at the front ends of the gas conveying branch pipes 122, and the distance between each pressure collecting device 130 and the corresponding ash conveying pump 220 or the gas conveying branch pipe 122 is in a range of 0.5m to 2.5 m.
In order to ensure the quality of the air delivered into the ash conveying pipe 210, the pneumatic conveying device further comprises an air filter 150, the air filter 150 is arranged on the gas delivery main pipe 121, and the air filter 150 is positioned between the output end of the gas source 110 and the air inlet valve 140. In this embodiment, the gas from the gas source 110 is delivered into the gas delivery tube sequentially through the air filter 150 and the air inlet valve 140.
Further, in order to protect the control valves in the pneumatic conveying device, the pneumatic conveying device further comprises a pressure maintaining valve 160, and the pressure maintaining valve 160 can be arranged between the air filter 150 and the air inlet valve 140. In this embodiment, the pressure maintaining valve 160 is disposed behind the air filter 150, so that abrasion of impurities in the air to the valve body of the pressure maintaining valve 160 is reduced, thereby reducing the failure rate of the pressure maintaining valve 160.
Tests show that for the same ash conveying system, when the pneumatic conveying device is not put into use, the ash conveying system conveys less ash each time, the average pressure is low, and the conveying frequency is high; when the ash conveying system is put into use, the average ash conveying pressure is increased, and the conveying frequency is obviously reduced; namely, when the ash conveying system increases the ash amount, the circulation period is automatically shortened to increase the ash conveying amount.
For the pneumatic conveying device for the ash conveying system of the embodiment, the ash conveying system can automatically correct the ash conveying period according to the current ash amount to ensure the stable operation of the system, and the air blowing when the ash amount is less is reduced, so that the waste of compressed air is reduced, the ash conveying frequency is reduced, and the abrasion of a pipeline and the switching times of valves of various devices are reduced. When the load of the unit is reduced, the conveying period is gradually prolonged, the conveying times are correspondingly reduced, the average conveying pressure is improved, and when the ash amount is large, the ash conveying system can automatically shorten the cycle period, so that the purpose of automatically adjusting according to the ash amount is achieved. And the ash conveying system adopting the pneumatic conveying device has the advantages that the pressure difference between the air source pressure and the ash conveying pipeline is reduced, the air consumption in unit time is reduced, and the use amount of ash conveying compressed air is saved, so that the operation cost is reduced.
In addition, the pneumatic conveying device can adjust the operation time, so that peak air consumption is reduced, the operation of the air compressor of the whole ash conveying system is further optimized, and the stable operation of the pressure of the compressed air main pipe is maintained.
Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments and/or in combination with or instead of the features of the other embodiments.
The above listed embodiments show and describe the basic principles and main features of the present invention, but the present invention is not limited by the above embodiments, and the modifications, equivalent changes and modifications made by those skilled in the art without creative work should fall within the protection scope of the technical solution of the present invention.
Claims (10)
1. A pneumatic conveying device for an ash conveying system, characterized in that it comprises:
a gas source;
the gas conveying pipe comprises a gas conveying main pipe and a gas conveying branch pipe, one end of the gas conveying main pipe is communicated with the output end of the gas source, the other end of the gas conveying main pipe is closed, one end of the gas conveying branch pipe is communicated with the gas conveying main pipe, and the other end of the gas conveying branch pipe is communicated with an ash conveying pipe of the ash conveying system;
the pressure acquisition device is arranged on the ash conveying pipe of the ash conveying system and used for acquiring the pressure in the ash conveying pipe;
the air inlet valve is arranged on the air conveying pipe, is positioned between the air source and the pressure acquisition device and is used for adjusting the pressure of the air conveyed into the ash conveying pipe;
and the PLC is respectively connected with the pressure acquisition device and the air inlet valve and is used for receiving the pressure data in the ash conveying pipe acquired by the pressure acquisition device and adjusting the size of the valve port of the air inlet valve based on the received pressure data.
2. The pneumatic conveying device for the ash conveying system according to claim 1, wherein the number of the pressure collecting devices is plural, a first distance is arranged between the plural pressure collecting devices, and the PLC is connected to the plural pressure collecting devices.
3. The pneumatic conveying apparatus for ash conveying system of claim 2, wherein the pressure collecting device is a pressure sensor.
4. The pneumatic conveying device for an ash conveying system according to claim 2, wherein the number of the gas conveying branch pipes is plural, and the plural gas conveying branch pipes are arranged in parallel and at intervals.
5. The pneumatic conveying device for an ash conveying system according to claim 4, wherein the number of the pressure collecting devices is equal to that of the gas conveying branch pipes, and a plurality of the pressure collecting devices are respectively arranged at the front ends of the plurality of the gas conveying branch pipes.
6. The pneumatic conveying apparatus for ash conveying system of claim 1, further comprising an air filter, wherein said air filter is disposed on said gas conveying main pipe, and said air filter is located between the output end of said gas source and said air intake valve.
7. The pneumatic conveying apparatus for an ash conveying system of claim 6, further comprising a pressure maintaining valve between the air filter and the air inlet valve.
8. The pneumatic conveying device for the ash conveying system according to claim 1, wherein the ash conveying system comprises an ash conveying pump, and the distance between the pressure collecting device and the ash conveying pump is in a range of 0.5 m-2.5 m.
9. The pneumatic conveying device for an ash conveying system according to claim 8, wherein the PLC is further connected with the ash conveying pump, and the PLC is used for adjusting the running time of the ash conveying pump.
10. The pneumatic conveying device for the ash conveying system according to any one of claims 1 to 9, wherein the PLC is an industrial personal computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220743507.6U CN217076249U (en) | 2022-04-01 | 2022-04-01 | Pneumatic conveying device for ash conveying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220743507.6U CN217076249U (en) | 2022-04-01 | 2022-04-01 | Pneumatic conveying device for ash conveying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217076249U true CN217076249U (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220743507.6U Active CN217076249U (en) | 2022-04-01 | 2022-04-01 | Pneumatic conveying device for ash conveying system |
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| Country | Link |
|---|---|
| CN (1) | CN217076249U (en) |
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2022
- 2022-04-01 CN CN202220743507.6U patent/CN217076249U/en active Active
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