Furnace pressure tapping pipe, boiler and application of furnace pressure tapping pipe
By introducing an automatic cleaning unit and a power unit into the furnace pressure pressure pipe, the problem of relying on manual water cleaning in the furnace is solved, and the continuous stability of pressure detection and the safety of boiler operation are achieved.
Patent Information
- Application Number
- CN202411367576.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-29
- Publication Date
- 2025-01-07
AI Technical Summary
In the prior art, the pressure pipe in the furnace requires manual cleaning of fly ash, which affects the continuous stability of pressure measurement and leads to unstable operation of the boiler.
A furnace pressure pressure-taking pipe is designed, including a pressure-taking pipe main body, cleaning unit, power unit and control unit. The cleaning unit moves back and forth in the pressure-taking pipe main body through the power unit, automatically cleans up fly ash, and passes through the pressure-taking pipe main body. The opening re-entered the cleaned furnace ash into the furnace chamber to avoid manual intervention.
The fly ash cleaning without manual intervention is achieved, ensuring the continuous stability and accuracy of pressure detection, avoiding boiler shutdown, and improving the safe and stable operation of the boiler.
Smart Images
Figure CN119267886A_ABST
Abstract
Description
Technical Field
[0001] The present application belongs to the field of industrial energy equipment, and in particular relates to a furnace pressure taking pipe, a boiler and applications thereof. Background Art
[0002] Industrial boilers are important equipment that provide heat energy for industrial production processes. They are classified into coal-fired boilers, oil-fired boilers, gas-fired boilers, and biomass boilers according to fuel type, and are widely used in the fields of power generation, smelting, pulp and papermaking, and alkali recovery. In order to ensure the safe, normal, and stable operation of the boiler, it is necessary to measure the pressure inside the boiler furnace, economizer, flue, and other furnace bodies, so as to adjust the air supply and furnace pressure through automatic adjustment and interlocking, and manual judgment and operation.
[0003] However, the fly ash generated after the fuel is burned in the furnace can easily clog the pressure-taking pipe at the pressure measuring point, affecting the pressure measurement results, further causing the boiler to run unstably, and even causing the boiler to be interlocked and shut down. In the prior art, the solutions to fly ash include: 1. Designing a cyclone dust removal pipe at the pressure-taking point to settle and separate the fly ash carried by the sample gas in the furnace; 2. Installing a compressed air pipeline and valve at the outer end of the pressure-taking pipe in the furnace, and installing an isolation valve on the pressure-taking and transmission pipeline. The above solutions all require manual regular cleaning of the ash discharge valve pipeline, and the pressure-taking isolation valve needs to be closed during the cleaning and blowing process, and the pressure signal analog quantity needs to be switched, which is not conducive to continuous and stable pressure monitoring.
[0004] Therefore, a furnace pressure taking tube, boiler and application thereof are developed to solve the technical defects in the prior art that the furnace pressure taking tube needs to rely on manual labor for fly ash cleaning and is not conducive to continuous and stable pressure detection, which has become an urgent problem to be solved by technical personnel in this field. Summary of the invention
[0005] Based on this, it is necessary to provide a furnace pressure taking tube, a boiler and their applications in view of the technical defects in the existing technology that the fly ash cleaning of the furnace pressure taking tube needs to rely on manual labor and is not conducive to continuous and stable pressure detection.
[0006] The present application provides a furnace pressure taking pipe, the pressure taking pipe comprising: a pressure taking pipe body, a pressure taking unit, a cleaning unit, a power unit and a control unit, the pressure taking pipe body is a hollow cavity structure with one end closed, and the open end of the pressure taking pipe body extends into the furnace;
[0007] The cleaning unit is arranged inside the pressure taking pipe body, and the power unit drives the cleaning unit to move axially back and forth inside the pressure taking pipe body to clean the inside of the pressure taking pipe body;
[0008] The side wall of the pressure taking pipe body is provided with an opening, and the pressure taking unit is arranged at the opening;
[0009] The control unit is electrically connected to the pressure taking unit and the power unit respectively, and is used to control the pressure taking unit and the power unit.
[0010] In one embodiment, the cleaning unit includes: a connecting rod and a cleaning head, and two ends of the connecting rod are respectively connected to the power unit and the cleaning head.
[0011] In one embodiment, the connecting rod is detachably connected to the cleaning head.
[0012] In one embodiment, the power unit includes: a cylinder and a cylinder controller, the cylinder controller is electrically connected to the control unit, and the cylinder is arranged inside the pressure taking tube body to drive the cleaning unit to reciprocate inside the pressure taking tube body.
[0013] In one of the embodiments, the inner wall of the pressure taking tube body is provided with a first thread, the outer wall of the cylinder is provided with a second thread, and the first thread is threadably connected to the second thread.
[0014] In one of the embodiments, the cylinder is connected to an external compressed air source, and the cylinder controller controls the connection and / or disconnection between the cylinder and the compressed air source.
[0015] In one of the embodiments, the furnace pressure taking pipe further includes: an air pressure delivery pipeline, one end of which is connected to the pressure taking unit, and the other end of which is externally connected to a furnace pressure transmitter.
[0016] The present application also provides a boiler, which comprises the furnace pressure taking pipe as described in any one of the above.
[0017] In one of the embodiments, the number of the furnace pressure taking pipes is greater than or equal to 2.
[0018] The present application also provides an application of a furnace pressure taking pipe as described in any one of the above or a boiler as described in any one of the above in the field of papermaking.
[0019] In summary, the present application provides a furnace pressure taking tube, including: a pressure taking tube body, a pressure taking unit, a cleaning unit, a power unit and a control unit, wherein the pressure taking tube body is a hollow cavity structure with one end closed, and the open end of the pressure taking tube body extends into the furnace; the cleaning unit is arranged inside the pressure taking tube body, and the power unit drives the cleaning unit to move axially back and forth inside the pressure taking tube body, so as to clean the inside of the pressure taking tube body. The present application also provides a boiler including the above-mentioned furnace pressure taking tube, and the present application also provides an application of the above-mentioned furnace pressure taking tube or the above-mentioned boiler in the field of papermaking. In the technical solution provided by the present application, the cleaning unit is driven by the power unit to reciprocate in the pressure taking tube body. During the reciprocating motion, the cleaning unit cleans the pressure taking tube, and re-enters the cleaned ash into the furnace through the opening of the pressure taking tube body, without relying on manpower for cleaning. During the cleaning process, the cleaning unit and the pressure taking unit are relatively independent, and the pressure taking unit can operate continuously, effectively ensuring the continuous and stable detection of pressure. The present application provides a furnace pressure taking tube, a boiler and applications thereof, which solve the technical defects in the prior art that the furnace pressure taking tube has to rely on manual labor for fly ash cleaning and is not conducive to continuous and stable pressure detection. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.
[0021] Figure 1 A schematic diagram of a structure of a technical solution provided in an embodiment of the present application;
[0022] Among them, there are a pressure taking pipe body 1, a pressure taking unit 2, a connecting rod 31, a cleaning head 32, a cylinder 41, a cylinder controller 42, an air pressure delivery pipeline 5, a furnace pressure transmitter 6, a compressed air source 7, a first thread 8 and a furnace 9. DETAILED DESCRIPTION
[0023] The embodiments of the present application provide a furnace pressure taking tube, a boiler and applications thereof, which are used to solve the technical defects in the prior art that the furnace pressure taking tube has to rely on manual labor for fly ash cleaning and is not conducive to continuous and stable pressure detection.
[0024] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.
[0025] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.
[0026] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
[0027] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0028] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0029] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
[0030] See also Figure 1 The embodiment of the present application provides a furnace pressure taking tube, including: a pressure taking tube body 1, a pressure taking unit 2, a cleaning unit, a power unit and a control unit. The pressure taking tube body 1 is a hollow cavity structure with one end closed, and the open end of the pressure taking tube body 1 extends into the furnace 9; the cleaning unit is arranged inside the pressure taking tube body 1, and the power unit drives the cleaning unit to move axially back and forth inside the pressure taking tube body 1, so as to clean the inside of the pressure taking tube body 1; the side wall of the pressure taking tube body 1 is provided with an opening, and the pressure taking unit 2 is arranged at the opening; the control unit is electrically connected to the pressure taking unit 2 and the power unit, respectively, so as to control the pressure taking unit 2 and the power unit. The embodiment of the present application provides a furnace pressure taking tube, a boiler and its application, so as to solve the technical defects in the prior art that the pressure taking tube in the furnace 9 needs to rely on manual labor for fly ash cleaning and is not conducive to continuous and stable pressure detection.
[0031] In the technical solution provided by the embodiment of the present application, the pressure-taking pipe body 1 is used as the main basic structure, and one end of its opening extends into the interior of the furnace 9. An opening is provided on the side wall of the pressure-taking pipe body 1, where a pressure-taking unit 2 is installed to obtain the pressure inside the pressure-taking pipe body 1. Since the pressure-taking pipe body 1 is connected to the furnace 9, the pressure obtained by the pressure-taking unit 2 inside the pressure-taking pipe body 1 can represent the real-time pressure in the furnace 9 in real time and accurately. The pressure-taking operation control of the pressure-taking unit 2 and the transmission feedback of the pressure-taking result are controlled and transmitted by a control unit electrically connected to the pressure-taking unit 2.
[0032] A cleaning unit and a power unit are also provided in the pressure taking tube body 1. The power unit drives the cleaning unit to perform axial reciprocating motion inside the pressure taking tube body 1. During the axial reciprocating motion, the cleaning unit can clean the ash on the inner wall of the pressure taking tube body 1 to ensure that there is no accumulation of ash inside the pressure taking tube body 1, and to ensure that the furnace pressure taking tube can work continuously and stably, and the accuracy of pressure detection will not be affected by the docking of ash.
[0033] In the process of the power unit providing power for the axial movement of the cleaning unit, the control unit electrically connected to the power unit controls the power unit in real time. According to actual needs, the control unit can be set to start the power unit regularly at a fixed frequency and fixed time. The specific cleaning duration and cleaning cycle are adjusted by adjusting the data of the control unit, and can also be manually operated to control the control unit and then start the power unit.
[0034] In the technical solution provided in the embodiment of the present application, the pressure taking unit 2 and the cleaning unit work independently and do not affect each other. The cleaning work of the cleaning unit will not affect the pressure taking unit 2; at the same time, since the cleaning unit performs axial reciprocating motion inside the pressure taking tube body 1, the cleaned ash can re-enter the furnace 9 through the open end of the pressure taking tube body 1, so there is no need to shut down the furnace pressure taking tube for cleaning, which ensures that the pressure taking unit 2 can continue to work and ensures the real-time and accurate transmission of pressure data.
[0035] In actual application, in order to facilitate the ash in the pressure taking tube body 1 to enter the furnace 9 more smoothly and not accumulate inside the pressure taking tube body 1, the open end of the pressure taking tube body 1 can be tilted downward at a certain angle, and during the reciprocating motion of the cleaning unit, part of its structure can extend out of the pressure taking tube body 1. The above technical means can also be superimposed at the same time.
[0036] To further optimize the technical solution, while ensuring a good cleaning effect of the cleaning unit, the design requirement of simplifying the structure of the cleaning unit is taken into account. In a furnace pressure taking tube provided in an embodiment of the present application, the cleaning unit includes: a connecting rod 31 and a cleaning head 32, and the two ends of the connecting rod 31 are respectively connected to the power unit and the cleaning head 32.
[0037] In actual application, the outer diameters of the connecting rod 31 and the cleaning head 32 are smaller than the inner diameter of the pressure taking tube body 1 to ensure that the cleaning unit can smoothly perform axial reciprocating motion inside the pressure taking tube body 1. At the same time, the outer diameter of the cleaning head 32 is as close as possible to the inner diameter of the pressure taking tube body 1 to better clean the inner wall of the pressure taking tube body 1.
[0038] To further optimize the technical solution, in order to facilitate regular maintenance and cleaning of the cleaning head 32 and better optimize the cleaning effect of the cleaning unit, in the technical solution provided in the embodiment of the present application, the connecting rod 31 is detachably connected to the cleaning head 32.
[0039] In a furnace pressure taking pipe provided in an embodiment of the present application, a power unit includes: a cylinder 41 and a cylinder controller 42, the cylinder controller 42 is electrically connected to a control unit, the cylinder 41 is arranged inside the pressure taking pipe body 1, and drives the cleaning unit to reciprocate inside the pressure taking pipe body 1. The movement of the cylinder 41 is controlled by the cylinder controller 42, and the cylinder controller 42 is electrically connected to the control unit to realize start-stop control, and the control structure is simple and stable, which effectively simplifies the structure while ensuring that power can be stably and continuously provided.
[0040] To further optimize the technical solution and enhance the air tightness of the pressure taking tube body 1, in the technical solution provided in the embodiment of the present application, the inner wall of the pressure taking tube body 1 is provided with a first thread 8, the outer wall of the cylinder 41 is provided with a second thread, and the first thread 8 is threadedly connected to the second thread.
[0041] To further optimize the technical structure, in the technical solution provided in the embodiment of the present application, the cylinder 41 is externally connected to the compressed air source 7, and the cylinder controller 42 controls the connection and / or disconnection between the cylinder 41 and the compressed air source 7. The external compressed air source 7 provides compressed air to the cylinder 41 to better drive the cleaning unit.
[0042] A furnace pressure taking pipe provided in the embodiment of the present application further includes: an air pressure delivery pipeline 5, one end of which is connected to the pressure taking unit 2, and the other end of which is externally connected to the furnace pressure transmitter 6. The pressure obtained by the pressure taking unit 2 is transmitted to the external furnace pressure transmitter 6 through the air pressure delivery pipeline 5, and the furnace pressure transmitter 6 adjusts the furnace 9 pressure in real time according to the real-time air pressure result, thereby ensuring production safety.
[0043] The present application also provides a boiler including the above-mentioned furnace pressure taking pipe. After the above-mentioned furnace pressure taking pipe is installed, the pressure inside the boiler can be accurately obtained in real time without being affected by fly ash and without relying on manpower to shut down and clean the pressure taking pipe.
[0044] In order to more accurately monitor the pressure of different parts of the boiler (such as the boiler furnace, economizer, flue, etc.) in real time, in a boiler provided in an embodiment of the present application, the number of furnace pressure taking pipes is greater than or equal to 2.
[0045] It can be concluded from the above technical solution that the furnace pressure taking pipe or boiler provided in the embodiment of the present application can operate stably, continuously and safely, its internal pressure can be accurately obtained, it has low dependence on human labor, can operate automatically and continuously, and can be widely used in the papermaking field.
[0046] In summary, the present application provides a furnace pressure taking tube, including: a pressure taking tube body, a pressure taking unit, a cleaning unit, a power unit and a control unit, wherein the pressure taking tube body is a hollow cavity structure with one end closed, and the open end of the pressure taking tube body extends into the furnace; the cleaning unit is arranged inside the pressure taking tube body, and the power unit drives the cleaning unit to move axially back and forth inside the pressure taking tube body, so as to clean the inside of the pressure taking tube body. The present application also provides a boiler including the above-mentioned furnace pressure taking tube, and the present application also provides an application of the above-mentioned furnace pressure taking tube or the above-mentioned boiler in the field of papermaking. In the technical solution provided by the present application, the cleaning unit is driven by the power unit to reciprocate in the pressure taking tube body. During the reciprocating motion, the cleaning unit cleans the pressure taking tube, and re-enters the cleaned ash into the furnace through the opening of the pressure taking tube body, without relying on manpower for cleaning. During the cleaning process, the cleaning unit and the pressure taking unit are relatively independent, and the pressure taking unit can operate continuously, effectively ensuring the continuous and stable detection of pressure. The present application provides a furnace pressure taking tube, a boiler and applications thereof, which solve the technical defects in the prior art that the furnace pressure taking tube has to rely on manual labor for fly ash cleaning and is not conducive to continuous and stable pressure detection.
[0047] The technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. At the same time, other implementation methods can be derived from the above-mentioned embodiments, so that structural and logical replacements and changes can be made without departing from the scope of this disclosure.
[0048] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.
Claims
1. A furnace pressure taking pipe, characterized in that: The furnace pressure taking pipe comprises: a pressure taking pipe body, a pressure taking unit, a cleaning unit, a power unit and a control unit. The pressure taking pipe body is a hollow cavity structure with one end closed, and the open end of the pressure taking pipe body extends into the furnace; The cleaning unit is arranged inside the pressure taking pipe body, and the power unit drives the cleaning unit to move axially back and forth inside the pressure taking pipe body to clean the inside of the pressure taking pipe body; The side wall of the pressure taking pipe body is provided with an opening, and the pressure taking unit is arranged at the opening; The control unit is electrically connected to the pressure taking unit and the power unit respectively, and is used to control the pressure taking unit and the power unit.
2. The furnace pressure taking pipe according to claim 1, characterized in that: The cleaning unit comprises: a connecting rod and a cleaning head, and two ends of the connecting rod are respectively connected to the power unit and the cleaning head.
3. The furnace pressure taking pipe according to claim 2, characterized in that: The connecting rod is detachably connected to the cleaning head.
4. The furnace pressure taking pipe according to claim 1, characterized in that: The power unit includes: a cylinder and a cylinder controller, wherein the cylinder controller is electrically connected to the control unit, and the cylinder is disposed inside the pressure taking tube body to drive the cleaning unit to reciprocate inside the pressure taking tube body.
5. The furnace pressure taking pipe according to claim 4, characterized in that: The inner wall of the pressure taking pipe body is provided with a first thread, the outer wall of the cylinder is provided with a second thread, and the first thread is threadably connected with the second thread.
6. The furnace pressure taking pipe according to claim 4 or 5, characterized in that: The cylinder is externally connected to a compressed air source, and the cylinder controller controls the connection and / or disconnection between the cylinder and the compressed air source.
7. The furnace pressure taking pipe according to claim 1, characterized in that: The furnace pressure taking pipe also includes: an air pressure delivery pipeline, one end of which is connected to the pressure taking unit, and the other end of which is externally connected to a furnace pressure transmitter.
8. A boiler, characterized in that: The boiler comprises the furnace pressure taking pipe according to any one of claims 1 to 7.
9. The boiler according to claim 8, characterized in that The number of the furnace pressure taking pipes is greater than or equal to 2.
10. Use of the furnace pressure taking pipe according to any one of claims 1 to 7 or the boiler according to any one of claims 8 to 9 in the field of papermaking.