CN115185012A - Pipeline blockage early warning system - Google Patents
Pipeline blockage early warning system Download PDFInfo
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- CN115185012A CN115185012A CN202210701870.6A CN202210701870A CN115185012A CN 115185012 A CN115185012 A CN 115185012A CN 202210701870 A CN202210701870 A CN 202210701870A CN 115185012 A CN115185012 A CN 115185012A
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- G01V9/00—Prospecting or detecting by methods not provided for in groups G01V1/00 - G01V8/00
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- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
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Abstract
The utility model relates to a pipeline blocks up early warning system relates to the thermal power field. The device comprises a controller and a plurality of groups of blockage monitoring assemblies connected with the controller, wherein different blockage monitoring assemblies are arranged on different pulverized coal pipelines, each group of blockage monitoring assembly comprises a plurality of pipe wall temperature measuring assemblies, and different pipe wall temperature measuring assemblies are arranged at different positions outside the pulverized coal pipelines; the pipe wall temperature measuring assembly is used for collecting the pipe wall temperature and sending the collected pipe wall temperature to the controller; the controller is used for determining target blocking position information in the plurality of pulverized coal pipelines according to the pipe wall temperatures sent by the pipe wall temperature measuring assemblies. Can block up the monitoring subassembly through the multiunit and acquire the pipe wall temperature, according to the pipe wall temperature determination take place the buggy pipeline that blocks up and the concrete position of jam, sensitivity is high and convenient the maintenance, promotes the efficiency of pipeline jam early warning.
Description
Technical Field
The disclosure relates to the field of thermal power generation, in particular to a pipeline blockage early warning system.
Background
At present, a positive pressure direct-fired pulverizing system is generally adopted in a thermal power plant. Raw coal enters a coal mill from the top of the coal mill to be milled, high-temperature and high-pressure primary air enters the coal mill from the lower part of the coal mill, pulverized coal formed after milling is dried by the primary air and then sequentially passes through a rotary separator at the top of the coal mill and an outlet of the coal mill to enter a furnace chamber to be combusted, and the pulverized coal is easy to deposit and block a pulverized coal pipeline when passing through the pulverized coal pipeline, so that fuel supply of thermal power generation equipment is influenced, and normal operation of the thermal power generation equipment is influenced.
The existing scheme for preventing the blockage of the pulverized coal pipe generally detects the air pressure difference between an inlet and an outlet of a coal mill, the air pressure of an outlet of a separator of the coal mill or the primary air quantity of an inlet of the coal mill, gives out early warning of pipeline blockage according to a detection result, and has the problems of insufficient early warning sensitivity and incapability of accurately judging the blockage position.
Disclosure of Invention
To overcome the problems in the related art, the present disclosure provides a pipe blockage warning system.
According to a first aspect of the embodiment of the present disclosure, a pipeline blockage early warning system is provided, the system is applied to a coal powder pipeline, a coal pulverizer is connected to coal powder pipeline one end, and furnace is connected to the other end, the coal pulverizer for producing buggy, the buggy is through a plurality of under the wind-force effect the coal powder pipeline carry extremely furnace, the system includes:
the device comprises a controller and a plurality of groups of blockage monitoring components connected with the controller, wherein different blockage monitoring components are arranged on different pulverized coal pipelines, each group of blockage monitoring components comprises a plurality of pipe wall temperature measuring components, and different pipe wall temperature measuring components are arranged at different positions outside the pulverized coal pipelines;
the pipe wall temperature measuring assembly is used for collecting pipe wall temperatures of a plurality of sampling points on the section of the coal powder pipeline where the pipe wall temperature measuring assembly is located and sending the collected pipe wall temperatures to the controller;
the controller is used for determining target blockage position information in the plurality of pulverized coal pipelines according to the pipe wall temperatures sent by the plurality of pipe wall temperature measuring assemblies corresponding to each group of blockage monitoring assemblies in the plurality of groups of blockage monitoring assemblies.
Optionally, the pulverized coal pipeline includes a horizontal pipeline section, the pipe wall temperature measuring assemblies are arranged on the horizontal pipeline section, in the plurality of pipe wall temperature measuring assemblies corresponding to each group of the blockage monitoring assemblies, two adjacent pipe wall temperature measuring assemblies are spaced at the same or different preset distances, and the distance between each pipe wall temperature measuring assembly and the furnace is greater than or equal to a preset distance threshold.
Optionally, each pipe wall temperature measuring assembly comprises an upper pipe temperature measuring sensor and a lower pipe temperature measuring sensor, and the upper pipe temperature measuring sensor and the lower pipe temperature measuring sensor are oppositely arranged on the upper side and the lower side of the horizontal pipe section;
the upper pipe temperature measuring sensor is used for acquiring a first pipe wall temperature of an upper pipe wall and sending the first pipe wall temperature to the controller;
the lower pipe temperature measuring sensor is used for acquiring a second pipe wall temperature of a lower pipe wall and sending the second pipe wall temperature to the controller;
and the controller is used for acquiring the pipeline identifier of the pulverized coal pipeline where the pipe wall temperature measuring component is located and the position identifier of the pipe wall temperature measuring component under the condition that the pipe section of the pipe where the pipe wall temperature measuring component is located is determined to be blocked according to the first pipe wall temperature and the corresponding second pipe wall temperature, and generating and displaying target blocking position information comprising the pipeline identifier and the position identifier.
Optionally, the controller is configured to determine that the pipe wall temperature measuring assembly is blocked at the section of the pipe where the pipe wall temperature measuring assembly is located when the first pipe wall temperature and/or the second pipe wall temperature corresponding to the pipe wall temperature measuring assembly is lower than a preset temperature threshold.
Optionally, the controller is configured to obtain a target temperature difference between the first pipe wall temperature and the second pipe wall temperature corresponding to the pipe wall temperature measurement component, and determine that the pipe wall temperature measurement component is blocked at the section of the pipeline when the target temperature difference is greater than a preset temperature difference threshold.
Optionally, the blockage monitoring assembly further comprises a wind speed monitoring assembly disposed within the horizontal duct section in the pulverized coal duct;
the wind speed monitoring assembly is used for acquiring the pipeline wind speed of the pulverized coal pipeline and sending the pipeline wind speed to the controller;
the controller is further used for determining that the pulverized coal pipeline where the wind speed monitoring assembly is located is blocked under the condition that the wind speed of the pipeline is smaller than a preset pipeline wind speed threshold value.
Optionally, the controller is further configured to determine that the wind speed of the pulverized coal pipeline where the wind speed monitoring component is located is low when the wind speed of the pipeline is less than a preset alarm pipeline wind speed threshold and greater than or equal to the pipeline wind speed threshold, where the second pipeline wind speed threshold is greater than the first pipeline wind speed threshold.
Optionally, the pulverized coal pipeline further comprises a vertical pipeline section, the pulverized coal pipeline is connected with the coal pulverizer through the vertical pipeline section, the vertical pipeline section is connected with the horizontal pipeline section through an elbow, and the distance between the wind speed monitoring assembly and the elbow is a preset multiple of the inner diameter of the pulverized coal pipeline.
Optionally, the duct wall temperature measurement assembly comprises at least one resistive temperature measurement sensor and the wind speed monitoring assembly comprises at least one differential pressure wind speed measurement sensor.
Optionally, the controller is a distributed control system DCS.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:
the system comprises a system controller and a plurality of groups of blockage monitoring components connected with the controller, wherein different blockage monitoring components are arranged on different pulverized coal pipelines, each group of blockage monitoring components comprises a plurality of pipe wall temperature measuring components, and different pipe wall temperature measuring components are arranged at different positions outside the pulverized coal pipelines; the pipe wall temperature measuring assembly is used for collecting pipe wall temperatures of a plurality of sampling points on the section of the coal powder pipeline where the pipe wall temperature measuring assembly is located and sending the collected pipe wall temperatures to the controller; the controller is used for determining target blockage position information in the plurality of pulverized coal pipelines according to the pipe wall temperature sent by the plurality of pipe wall temperature measuring assemblies corresponding to each group of blockage monitoring assemblies in the plurality of groups of blockage monitoring assemblies. Can block up the monitoring subassembly through the multiunit and acquire the pipe wall temperature, according to the pipe wall temperature determination take place the buggy pipeline that blocks up and the concrete position of jam, sensitivity is high and convenient the maintenance, promotes the efficiency of pipeline jam early warning.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Additional features and advantages of the present disclosure will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the disclosure, but are not to be construed as limiting the disclosure.
FIG. 1 is a block diagram illustrating a pipe-blockage warning system according to an exemplary embodiment.
FIG. 2 is a top view of a pulverized coal duct coupled to a furnace, according to an exemplary embodiment.
FIG. 3 is a side view of a tube wall temperature measurement assembly shown spaced from a furnace according to an exemplary embodiment.
FIG. 4 is a block diagram illustrating another pipe blockage warning system in accordance with an exemplary embodiment.
FIG. 5 is a side view of a tube wall temperature measurement assembly and an installation location of a wind speed monitoring assembly, shown in accordance with an exemplary embodiment.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims, and it should be understood that the specific embodiments described herein are merely illustrative and explanatory of the disclosure, and do not restrict it.
It should be noted that all the actions of acquiring signals, information or data in the present application are performed under the premise of complying with the corresponding data protection regulation policy of the country of the location and obtaining the authorization given by the owner of the corresponding device.
First, an application scenario of the present disclosure is explained, and the inventor notices that the following disadvantages exist in the existing scheme of using the parameter changes of the inlet and outlet air pressure difference of the coal mill, the outlet air pressure of the coal mill and the primary air volume of the inlet of the coal mill to achieve the early warning effect in the related art:
1. the early warning sensitivity for the blockage of the pipeline is insufficient, when the blockage degree of the pulverized coal pipe is relatively low, the change range of parameters in the related technology is not obvious, and only when the blockage is serious, the parameters can be obviously changed, so that the problem that the blockage of the pulverized coal pipeline cannot be found in time is caused.
2. The coal pulverizer export is connected to furnace through a plurality of buggy pipelines usually, and arbitrary buggy pipeline blocks up and all can lead to above-mentioned parameter to change, can only confirm that the buggy pipeline exists the jam but can't confirm the specific buggy pipeline that blocks up, more can't confirm the specific position of jam, and the buggy pipeline is generally all longer, has greatly increased the maintenance degree of difficulty, has improved the cost of overhaul.
The application discloses pipeline blocks up early warning system can acquire the pipe wall temperature through multiunit jam monitoring subassembly, according to pipe wall temperature determination take place the buggy pipeline that blocks up and the concrete position of jam, and sensitivity is high and convenient the maintenance, promotes the efficiency of pipeline jam early warning.
The present disclosure is described below with reference to specific examples.
Fig. 1 is a block diagram illustrating a pipe blockage warning system according to an exemplary embodiment, the pipe blockage warning system being applied to a pulverized coal pipe, one end of the pulverized coal pipe being connected to a coal pulverizer, the other end of the pulverized coal pipe being connected to a furnace, the coal pulverizer being used for producing pulverized coal, the pulverized coal being supplied to the furnace through a plurality of pulverized coal pipes under the action of wind, as shown in fig. 2, fig. 2 is a top view illustrating a pulverized coal pipe according to an exemplary embodiment being connected to the furnace, and may include four pulverized coal pipes, in a case where the furnace is quadrilateral, each corner of the furnace is connected to one of the pulverized coal pipes, so that the pulverized coal is supplied from four corners of the furnace to the furnace for combustion, thereby effectively increasing the combustion rate of the pulverized coal, and the pipe blockage warning system 1 includes a controller 11 and a plurality of blockage monitoring assemblies 12 connected to the controller 11; it should be noted that the above example shown in fig. 2 is only used for illustrating the connection of the furnace and the pulverized coal duct, and is not used for limiting the specific shape of the furnace, and the shape of the furnace in the prior art is various, and the disclosure does not limit this.
Wherein, different jam monitoring component 12 sets up on the buggy pipeline of difference, and every group blocks up monitoring component 12 and includes a plurality of pipe wall temperature measurement subassembly 121, and different pipe wall temperature measurement subassembly 121 sets up in the different positions department in the buggy pipeline outside.
For example, the occlusion monitoring component 12 may include one or more pipe wall temperature measuring components, and in some possible implementations, the pipe wall temperature measuring component 121 may be connected to the controller 11 through wired communication or wireless communication, and the controller 11 may be an industrial control system, which is not limited by the present disclosure.
The quantity of the blockage monitoring assemblies 12 is multiple groups, different blockage monitoring assemblies 12 are arranged on different pulverized coal pipelines, each group of blockage monitoring assemblies 12 comprises a plurality of pipe wall temperature measuring assemblies 121, and different pipe wall temperature measuring assemblies 121 are arranged at different positions outside the pulverized coal pipelines.
In some embodiments, the pulverized coal duct includes a horizontal duct section, the duct wall temperature measuring assemblies 121 are disposed on the horizontal duct section, in the plurality of duct wall temperature measuring assemblies 121 corresponding to each group of blockage monitoring assemblies, two adjacent duct wall temperature measuring assemblies 121 are spaced at the same or different preset distances, and the distance between the duct wall temperature measuring assembly 121 and the furnace is greater than or equal to the preset distance threshold.
Because the horizontal pipeline section is easy to generate coal dust deposition due to the action of gravity to form blockage of the coal dust pipeline, in some possible implementation manners, the plurality of pipe wall temperature measuring assemblies 121 can be arranged at the position where each coal dust pipeline is easy to block, for example, the connecting elbows of the horizontal pipeline sections in different directions, a plurality of pipe wall temperature measuring assemblies 121 can also be arranged on a longer horizontal pipeline section at certain preset distances, because the structures and the lengths of the coal dust pipelines are different, the number of the pipe wall temperature measuring assemblies 121 corresponding to different coal dust pipelines can be the same or different, the preset distances between different pipe wall temperature measuring assemblies 121 corresponding to the same coal dust pipeline can be the same or different, and the disclosure does not limit the same.
Fig. 3 is a side view illustrating a distance between the tube wall temperature measuring assembly 121 and the furnace according to an exemplary embodiment, and as shown in fig. 3, in order to avoid the influence of the temperature of the furnace on the tube wall temperature measuring assembly 121, the distance between the tube wall temperature measuring assembly 121 and the furnace is greater than or equal to a preset distance threshold, which may be 50-100 cm, for example.
The pipe wall temperature measuring assembly 121 is used for collecting pipe wall temperatures of a plurality of sampling points on a pipe section where the pipe wall temperature measuring assembly 121 is located in the pulverized coal pipe, and sending the collected pipe wall temperatures to the controller 11.
The controller 11 is configured to determine target blockage position information in the plurality of pulverized coal pipelines according to the pipe wall temperatures sent by the plurality of pipe wall temperature measurement assemblies 121 corresponding to each group of blockage monitoring assemblies 12 in the plurality of groups of blockage monitoring assemblies 12.
In some embodiments, each tube wall temperature measurement assembly 121 includes an upper tube temperature measurement sensor and a lower tube temperature measurement sensor disposed opposite an upper side and a lower side of the horizontal tube segment.
The upper pipe temperature measuring sensor is used for acquiring a first pipe wall temperature of an upper pipe wall and sending the first pipe wall temperature to the controller 11;
the lower pipe temperature measuring sensor is used for acquiring a second pipe wall temperature of the lower pipe wall and sending the second pipe wall temperature to the controller 11;
and the controller 11 is configured to, under the condition that it is determined that the pipe section where the pipe wall temperature measurement component is located is blocked according to the first pipe wall temperature and the corresponding second pipe wall temperature, obtain a pipe identifier of the pulverized coal pipe where the pipe wall temperature measurement component is located and a position identifier of the pipe wall temperature measurement component, and generate and display target blocking position information including the pipe identifier and the position identifier.
For example, the controller 11 may determine the pipe identifier of the pulverized coal pipe where the pipe wall temperature measuring assembly is located and the position identifier of the pipe wall temperature measuring assembly in the following manner.
In the method 1, when the first pipe wall temperature and/or the second pipe wall temperature corresponding to the pipe wall temperature measuring assembly 121 are/is less than a preset temperature threshold, it is determined that the pipe section where the pipe wall temperature measuring assembly is located is blocked.
For example, when the pulverized coal pipeline is blocked, the temperature of the pipe wall obtained at the outer side of the blocked position of the pulverized coal pipeline may decrease, so that it may be determined that the pipe wall temperature measuring assembly 121 is blocked at the pipe section when the first pipe wall temperature and/or the second pipe wall temperature is lower than the preset temperature threshold. According to the blocking position, the pipeline identification of the pulverized coal pipeline where the pipe wall temperature measuring component is located and the position identification of the pipe wall temperature measuring component can be obtained.
For example, the coal mill is connected to the furnace chamber through a plurality of pulverized coal pipes, and the first pipe wall temperature and the second pipe wall temperature obtained by the pipe wall temperature measuring assembly 121 corresponding to each pulverized coal pipe can be used respectively
And
is shown in which
The first pipe wall temperature obtained by an upper pipe temperature measuring sensor arranged at the ith installation position of the No. k coal powder pipeline is shown,
second pipe wall temperature obtained by down pipe temperature measuring sensor provided at ith installation position of K-size pulverized coal pipeline, for example
When the temperature is lower than the preset temperature threshold value, the section of the pipeline where the No. 2 pulverized coal pipeline is located at the 3 rd installation position is determined to be blocked.
After obtaining the pipe identifier of the pulverized coal pipe where the pipe wall temperature measuring component is located and the position identifier of the pipe wall temperature measuring component, the controller 11 may generate and display target blocking position information including the pipe identifier and the position identifier, for example, may display a pulverized coal pipe blocking alarm to a user, where the pulverized coal pipe blocking alarm includes the pipe identifier and the position identifier.
In another embodiment, the controller 11 may further display a corresponding coal powder pipeline low temperature alarm when the first pipe wall temperature and/or the second pipe wall temperature is less than a preset early warning temperature threshold and is greater than or equal to the temperature threshold, where the coal powder pipeline low temperature alarm includes the pipeline identifier and the position identifier, and the early warning temperature threshold is greater than the temperature threshold.
And 2, acquiring a target temperature difference between the first pipe wall temperature and the second pipe wall temperature corresponding to the pipe wall temperature measuring assembly, and determining that the section of the pipeline where the pipe wall temperature measuring assembly is located is blocked under the condition that the target temperature difference is greater than a preset temperature difference threshold value.
For example, in the case that the pulverized coal pipeline is blocked, the first pipe wall temperature and the second pipe wall temperature respectively obtained at the upper side and the lower side of the pulverized coal pipeline cause temperature difference due to the blockage of the pulverized coal deposition pipeline, and the slight blockage of the pulverized coal pipeline due to the pulverized coal deposition can be timely found through the target temperature difference between the first pipe wall temperature and the second pipe wall temperature.
For example, in
And if the temperature difference is larger than the preset temperature difference threshold value, determining that the pipeline section where the No. 2 pulverized coal pipeline is located is blocked at the 3 rd installation position. After obtaining the pipe identifier of the pulverized coal pipe where the pipe wall temperature measuring component is located and the position identifier of the pipe wall temperature measuring component, the controller 11 may generate and display target blocking position information including the pipe identifier and the position identifier, for example, may display a pulverized coal pipe blocking alarm to a user, where the pulverized coal pipe blocking alarm includes the pipe identifier and the position identifier.
In another embodiment, the controller 11 may also display a corresponding large pulverized coal pipeline temperature difference alarm when the target temperature difference is greater than a preset early warning temperature difference threshold and is less than or equal to the temperature difference threshold, where the large pulverized coal pipeline temperature difference alarm includes the pipeline identifier and the position identifier, and the early warning temperature difference threshold is less than the temperature difference threshold.
It should be noted that the temperature threshold and the temperature difference threshold may be preset by a user, and are related to engineering parameters of an actual thermal power generation system, which is not limited in the present disclosure.
By adopting the scheme, the pipeline blockage early warning system is simple in structure, easy to implement and high in reliability, pipe wall temperature can be acquired through the multiple groups of blockage monitoring assemblies, the blocked pulverized coal pipeline and the blocked specific position are determined according to the pipe wall temperature, the sensitivity is high, the pipeline blockage early warning system is convenient to overhaul, and the pipeline blockage early warning efficiency is improved. Moreover, this pipe blockage early warning system simple structure, easily installation can be implemented on existing equipment basis simply reforms transform, and has the advantage that the cost is low and the maintenance cost is low of reforming transform.
FIG. 4 is a block diagram illustrating another pipeline blockage warning system in accordance with an exemplary embodiment, and as shown in FIG. 4, the blockage monitoring assembly 12 further includes a wind speed monitoring assembly 122, wherein the wind speed monitoring assembly 122 is disposed within a horizontal pipe segment in the pulverized coal pipeline.
The wind speed monitoring component 122 is configured to acquire a pipeline wind speed of the pulverized coal pipeline and send the pipeline wind speed to the controller, and in some possible implementation manners, the wind speed monitoring component 122 may be connected to the controller 11 through wired communication or wireless communication;
the controller 11 is further configured to determine that the pulverized coal pipeline where the wind speed monitoring component 122 is located is blocked when the wind speed of the pipeline is less than or equal to a preset threshold value of the wind speed of the pipeline.
In some embodiments, in order to further improve the accuracy of the pipeline blockage warning from multiple angles, it is avoided that the pipeline blockage warning system cannot give a warning in time due to the failure of the pipe wall temperature measuring assembly 121.
Illustratively, the pulverized coal pipeline further comprises a vertical pipeline section, the pulverized coal pipeline is connected with the coal pulverizer through the vertical pipeline section, the vertical pipeline section is connected with the horizontal pipeline section through an elbow, the wind speed monitoring component 122 can be arranged in the horizontal pipeline section in the pulverized coal pipeline, and the distance between the wind speed monitoring component 122 and the elbow is a preset multiple of the inner diameter of the pulverized coal pipeline. That is, the installation positions of the wind speed monitoring assemblies 122 corresponding to different pulverized coal pipelines are equivalent to the distance between the elbows, and the preset multiple may be 3 times as much as one example.
Fig. 5 is a side view of installation positions of a pipe wall temperature measuring assembly 121 and a wind speed monitoring assembly 122 according to an exemplary embodiment, as shown in fig. 5, the wind speed monitoring assembly 122 is installed inside a pulverized coal pipe, the installation positions of the wind speed monitoring assemblies 122 corresponding to different pulverized coal pipes are equivalent to the distance between the bends, which is a preset multiple of the inner diameter of the pulverized coal pipe (for example, the preset multiple is 3 times), a plurality of pipe wall temperature measuring assemblies are installed on the outer side of each horizontal pipe section of the pulverized coal pipe, each pipe wall temperature measuring assembly 121 includes an upper pipe temperature measuring sensor and a lower pipe temperature measuring sensor, and the upper pipe temperature measuring assembly and the lower pipe temperature measuring sensor are oppositely arranged on the upper side and the lower side of different pulverized coal pipes.
For example, in the case that the duct wind speed is less than a preset duct wind speed threshold value, it is determined that the pulverized coal duct in which the wind speed monitoring component 122 is located is blocked. After obtaining the pipe identifier of the pulverized coal pipe where the wind speed monitoring component 122 is located, the controller 11 may generate and display the pipe identifier, for example, by displaying a pulverized coal pipe blockage alarm to a user, where the pipe identifier is included in the pulverized coal pipe blockage alarm.
In another embodiment, when the wind speed of the pipeline is less than the preset early warning pipeline wind speed threshold and is greater than or equal to the pipeline wind speed threshold, it is determined that the wind speed of the pulverized coal pipeline where the wind speed monitoring component 122 is located is low, and after obtaining the pipeline identifier of the pulverized coal pipeline where the wind speed monitoring component 122 is located, the controller 11 may generate and display the pipeline identifier, for example, by displaying a low wind speed alarm of the pulverized coal pipeline to a user, where the low wind speed alarm of the pulverized coal pipeline includes the pipeline identifier. And the early warning pipeline wind speed threshold is greater than the pipeline wind speed threshold.
In some possible implementations, the pipe wall temperature measuring component 121 includes at least one resistance temperature measuring sensor, the wind speed monitoring component 122 includes at least one differential pressure type wind speed measuring sensor, and the controller 11 is a distributed control system DCS, and specific types of the pipe wall temperature measuring component 121, the wind speed monitoring component 122, and the controller 11 are not limited in this disclosure.
By adopting the technical scheme, the air speed of the pipeline can be acquired through the air speed monitoring assemblies arranged on the pulverized coal pipelines, the pulverized coal pipeline which is blocked is determined according to the air speed of the pipeline, and the accuracy of pulverized coal pipeline blockage early warning is further improved.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure 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 scope of the present disclosure is to be limited only by the following claims.
Claims (10)
1. The utility model provides a pipeline blocks up early warning system which characterized in that is applied to the buggy pipeline, the coal pulverizer is connected to buggy pipeline one end, and furnace is connected to the other end, the coal pulverizer for produce the buggy, the buggy is through a plurality of under the wind-force effect buggy pipeline transport extremely furnace, the system includes:
the device comprises a controller and a plurality of groups of blockage monitoring assemblies connected with the controller, wherein different blockage monitoring assemblies are arranged on different pulverized coal pipelines, each group of blockage monitoring assembly comprises a plurality of pipe wall temperature measuring assemblies, and different pipe wall temperature measuring assemblies are arranged at different positions outside the pulverized coal pipelines;
the pipe wall temperature measuring assembly is used for collecting pipe wall temperatures of a plurality of sampling points on the section of the coal powder pipeline where the pipe wall temperature measuring assembly is located and sending the collected pipe wall temperatures to the controller;
the controller is used for determining target blockage position information in the plurality of pulverized coal pipelines according to the pipe wall temperature sent by the plurality of pipe wall temperature measuring assemblies corresponding to each group of blockage monitoring assemblies in the plurality of groups of blockage monitoring assemblies.
2. The system according to claim 1, wherein the pulverized coal duct comprises a horizontal duct section, the duct wall temperature measuring assemblies are disposed on the horizontal duct section, two adjacent duct wall temperature measuring assemblies in the plurality of duct wall temperature measuring assemblies corresponding to each group of the blockage monitoring assemblies are spaced at the same or different preset distances, and the distance between each duct wall temperature measuring assembly and the furnace is greater than or equal to a preset distance threshold.
3. The system of claim 2, wherein each of the tube wall temperature measurement assemblies comprises an upper tube temperature measurement sensor and a lower tube temperature measurement sensor disposed opposite an upper side and a lower side of the horizontal tube segment;
the upper pipe temperature measuring sensor is used for acquiring a first pipe wall temperature of an upper pipe wall and sending the first pipe wall temperature to the controller;
the lower pipe temperature measuring sensor is used for acquiring a second pipe wall temperature of a lower pipe wall and sending the second pipe wall temperature to the controller;
and the controller is used for acquiring the pipeline identifier of the pulverized coal pipeline where the pipe wall temperature measuring component is located and the position identifier of the pipe wall temperature measuring component under the condition that the pipe section of the pipe where the pipe wall temperature measuring component is located is determined to be blocked according to the first pipe wall temperature and the corresponding second pipe wall temperature, and generating and displaying target blocking position information comprising the pipeline identifier and the position identifier.
4. The system of claim 3,
the controller is used for determining that the pipe section where the pipe wall temperature measuring assembly is located is blocked under the condition that the first pipe wall temperature and/or the second pipe wall temperature corresponding to the pipe wall temperature measuring assembly is/are smaller than a preset temperature threshold value.
5. The system of claim 3, wherein the controller is configured to obtain a target temperature difference between the first pipe wall temperature and the second pipe wall temperature corresponding to the pipe wall temperature measurement component, and determine that the pipe wall temperature measurement component is blocked at the section of the pipeline when the target temperature difference is greater than a preset temperature difference threshold.
6. The system of any one of claims 1 to 5, wherein the blockage monitoring assembly further comprises a wind speed monitoring assembly disposed within the horizontal duct section in the pulverized coal duct;
the wind speed monitoring assembly is used for acquiring the pipeline wind speed of the pulverized coal pipeline and sending the pipeline wind speed to the controller;
the controller is further used for determining that the pulverized coal pipeline where the wind speed monitoring assembly is located is blocked under the condition that the wind speed of the pipeline is smaller than a preset pipeline wind speed threshold value.
7. The system of claim 6, wherein the controller is further configured to determine that the pulverized coal duct wind speed at which the wind speed monitoring component is located is low if the duct wind speed is less than a preset warning duct wind speed threshold value and greater than or equal to the duct wind speed threshold value, and the warning duct wind speed threshold value is greater than the duct wind speed threshold value.
8. The system of claim 7, wherein the pulverized coal piping further comprises a vertical pipe section, the pulverized coal piping is connected to the coal pulverizer through the vertical pipe section, the vertical pipe section and the horizontal pipe section are connected through an elbow, and the wind speed monitoring assembly is spaced from the elbow by a predetermined multiple of an inner diameter of the pulverized coal piping.
9. The system of claim 8, wherein the duct wall temperature measurement assembly comprises at least one resistive temperature measurement sensor and the wind speed monitoring assembly comprises at least one differential pressure wind speed measurement sensor.
10. The system of claim 9, wherein the controller is a Distributed Control System (DCS).
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| CN202210701870.6A CN115185012A (en) | 2022-06-20 | 2022-06-20 | Pipeline blockage early warning system |
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| CN202210701870.6A CN115185012A (en) | 2022-06-20 | 2022-06-20 | Pipeline blockage early warning system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116313182A (en) * | 2023-04-26 | 2023-06-23 | 华能山东石岛湾核电有限公司 | Detection device and method for judging blocking position of high-temperature gas cooled reactor fuel element |
| CN118129945A (en) * | 2024-05-06 | 2024-06-04 | 南京镭芯光电有限公司 | Method for judging blockage of MOCVD tail gas pipeline |
-
2022
- 2022-06-20 CN CN202210701870.6A patent/CN115185012A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116313182A (en) * | 2023-04-26 | 2023-06-23 | 华能山东石岛湾核电有限公司 | Detection device and method for judging blocking position of high-temperature gas cooled reactor fuel element |
| CN116313182B (en) * | 2023-04-26 | 2024-09-20 | 华能山东石岛湾核电有限公司 | Detection device and method for judging blocking position of high-temperature gas cooled reactor fuel element |
| CN118129945A (en) * | 2024-05-06 | 2024-06-04 | 南京镭芯光电有限公司 | Method for judging blockage of MOCVD tail gas pipeline |
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