CN216281327U - Device for preventing 350WM direct current boiler from vibrating when pressurized water discharge - Google Patents
Device for preventing 350WM direct current boiler from vibrating when pressurized water discharge Download PDFInfo
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- CN216281327U CN216281327U CN202220075884.7U CN202220075884U CN216281327U CN 216281327 U CN216281327 U CN 216281327U CN 202220075884 U CN202220075884 U CN 202220075884U CN 216281327 U CN216281327 U CN 216281327U
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Abstract
The utility model discloses a device for preventing 350WM (zero-pulse width modulation) direct-current boiler from vibrating under pressure when water is discharged, which comprises an acquisition module, an interaction module and an action module, wherein the acquisition module comprises a first module body and a second module body, the interaction module comprises a first module body and a second module body, the first module body is used for acquiring the following signals: the action module is arranged on a rear smoke well lower annular collecting box in a mixing collecting box of the boiler and comprises a first pressure regulating pipeline and a second pressure regulating pipeline which are communicated with the rear smoke well lower annular collecting box, a first electric valve and a first manual valve are arranged on the first pressure regulating pipeline, and a second electric valve and a second manual valve are arranged on the second pressure regulating pipeline; the acquisition module is arranged on the action module and is electrically connected with the interaction module. Through setting up the pressure regulating pipeline on the annular collection case in the back cigarette pit to set up electric valve on the pressure regulating pipeline, adjust the separator outlet pressure of boiler, the saturation temperature that this pressure corresponds is less than the temperature of boiler spiral section water-cooling wall, thereby adjusts the temperature of spiral section water-cooling wall, prevents that the boiler area from pressing the emergence vibration when releasing water.
Description
Technical Field
The utility model relates to the technical field of power plant boilers, in particular to a device for preventing vibration of a 350WM once-through boiler during pressurized water discharge.
Background
When the boiler of the thermal power plant discharges water, the vibration of the boiler is mainly caused by a steam hammer effect, the temperature of the boiler water in the water-cooled wall of the spiral section is lower than the saturation temperature (corresponding to the saturation temperature of 175 ℃ at 0.8 WPa) and is in a liquid state, and the temperature of the boiler water in the water-cooled wall of the vertical section is higher than the saturation temperature and is in a gas state. The temperature of the flue gas in the furnace is about 145 ℃ at the water-cooled wall section of the spiral section and about 160 ℃ at the outlet of the hearth, and is lower than the temperature of furnace water in the water-cooled wall of the vertical section. When furnace water in the vertical section water-cooled wall enters the spiral section water-cooled wall, steam is cooled and condensed into saturated water, and simultaneously a large amount of heat is released, so that the temperature of the spiral section water-cooled wall is rapidly increased. The furnace water in the water-cooled wall of the spiral section is heated and vaporized to generate a large amount of bubbles, the bubbles rise to the water-cooled wall of the vertical section with higher temperature and disappear, the bubbles are continuously generated and destroyed, and the 'vapor-liquid two-phase flow' enables the volume of the working medium in the water-cooled wall to be greatly changed, thereby causing the pipeline vibration.
Therefore, the outlet pressure of the boiler separator is reasonably controlled, so that the temperature of the water-cooled wall of the spiral section is well controlled, the temperature of the water-cooled wall of the spiral section is controlled to be higher than the saturation temperature under the corresponding pressure when the boiler discharges water, and the vibration is avoided when the hot furnace discharges water under pressure.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a device for preventing vibration of a 350WM direct-current boiler during pressurized water discharge so as to solve the problem of vibration of a hot furnace during pressurized water discharge.
In order to solve the problems, the utility model adopts the technical scheme that:
the utility model provides a prevent device that 350WM once-through boiler shakes when taking pressure to drain, includes collection module, interactive module and action module:
the action module is arranged on a rear smoke well lower annular collecting box in a mixing collecting box of the boiler and comprises a first pressure regulating pipeline and a second pressure regulating pipeline which are communicated with the rear smoke well lower annular collecting box, wherein a communication port of the first pressure regulating pipeline and the rear smoke well lower annular collecting box is marked as a first communication port, and a communication port of the second pressure regulating pipeline and the rear smoke well lower annular collecting box is marked as a second communication port;
a first electric valve and a first manual valve are arranged on the first pressure regulating pipeline, and a second electric valve and a second manual valve are arranged on the second pressure regulating pipeline;
the acquisition module is arranged on the action module and is electrically connected with the interaction module.
Furthermore, the first electric valve and the first manual valve are sequentially arranged on the first pressure regulating pipeline, the first electric valve is positioned at a position close to the first communication port, and the first manual valve is positioned at a position far away from the first communication port relative to the first electric valve;
the second electric valve and the second manual valve are sequentially arranged on the second pressure regulating pipeline, the second electric valve is located at a position close to the second communicating port, and the second manual valve is located at a position far away from the second communicating port relative to the second electric valve.
Furthermore, the acquisition module comprises a front monitoring unit, a rear first monitoring unit and a rear second monitoring unit;
the front monitoring unit is arranged on the first pressure regulating pipeline and is positioned at a position close to the rear annular smoke well header relative to the first electric valve; or the preposed monitoring unit is arranged on the second pressure regulating pipeline and is positioned at a position close to the rear annular header of the smoke well relative to the second electric valve;
the rear first monitoring unit is arranged on the first pressure regulating pipeline and is positioned at a position far away from the first electric valve relative to the first electric valve;
the rear second monitoring unit is arranged on the second pressure regulating pipeline and is positioned at a position far away from the second electric valve relative to the second manual valve.
Furthermore, the interactive module comprises a graphic display unit and a sound output unit, and the graphic display unit is electrically connected with the sound output unit;
the front monitoring unit, the rear first monitoring unit and the rear second monitoring unit are all electrically connected with the graphic display unit.
Furthermore, the first pressure regulating pipeline is arranged on one side of the rear smoke well lower annular header, and the second pressure regulating pipeline is arranged on the other side of the rear smoke well lower annular header.
According to the utility model, the pressure regulating pipeline is arranged on the annular header under the rear smoke well, the electric valve is arranged on the pressure regulating pipeline, the outlet pressure of the separator of the boiler is regulated, the saturation temperature corresponding to the pressure is lower than the temperature of the spiral water-cooled wall of the boiler, so that the temperature of the spiral water-cooled wall is regulated, and the vibration of the boiler during water discharge under pressure is prevented.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of a boiler water wall according to the present invention;
FIG. 2 is a schematic diagram of a portion of an apparatus for preventing vibration during a 350WM once-through boiler discharge with pressure according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a portion of an apparatus for preventing vibration during a 350WM once-through boiler discharge with pressure according to another embodiment of the present invention;
fig. 4 is a schematic diagram of a connection relationship between the acquisition module and the interaction module provided by the present invention.
Description of reference numerals: 1-vertical section water-cooled wall, 2-mixed collection box, 3-spiral section water-cooled wall, 4-ash cooling bucket, 5-rear smoke underground annular collection box, 6-left side wall inlet collection box, 7-left shaft outlet collection box, 8-middle wall inlet collection box, 9-middle wall outlet collection box, 10-ceiling inlet collection box, 11-right side wall inlet collection box, 12-right shaft outlet collection box, 13-first pressure regulating pipeline, 14-second pressure regulating pipeline, 15-first electric valve, 16-first electric valve, 17-second electric valve, 18-second electric valve, 19-front monitoring unit, 20-rear first monitoring unit, 21-rear second monitoring unit, 22-graphic display unit, 23-sound output unit, 51 a first communication port, 52 a second communication port.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the utility model, are intended for purposes of illustration only and are not intended to limit the scope of the utility model. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the utility model without making creative efforts, shall fall within the protection scope of the utility model.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. The term "comprising", without further limitation, means that the element so defined is not excluded from the group consisting of additional identical elements in the process, method, article, or apparatus that comprises the element.
Fig. 1 is a schematic structural diagram of a boiler water wall according to the present invention, which includes a vertical section water wall 1, a mixing header 2, a spiral section water wall 3, and a cold ash bucket 4.
Referring to fig. 1 and 2, fig. 2 is a schematic view of a partial structure of an apparatus for preventing vibration of a 350WM once-through boiler during water discharge under pressure according to an embodiment of the present invention, and the partial structure of the apparatus is disposed inside a mixing header 2. As shown in fig. 2, the interior of the mixing header 2 at least includes a rear smoke pit lower annular header 5, a left side wall inlet header 6, a left shaft outlet header 7, a mid-wall inlet header 8, a mid-wall outlet header 9, a ceiling inlet header 10, a right side wall inlet header 11, and a right shaft outlet header 12;
the action module is arranged on a rear smoke well lower annular collecting box 5 in a mixing collecting box 2 of the boiler and comprises a first pressure regulating pipeline 13 and a second pressure regulating pipeline 14 which are communicated with the rear smoke well lower annular collecting box 5, wherein a communication port of the first pressure regulating pipeline 13 and the rear smoke well lower annular collecting box 5 is marked as a first communication port 51, and a communication port of the second pressure regulating pipeline 14 and the rear smoke well lower annular collecting box 5 is marked as a second communication port 52;
a first electric valve 15 and a first manual valve 16 are arranged on the first pressure regulating pipeline 13, and a second electric valve 17 and a second manual valve 18 are arranged on the second pressure regulating pipeline 14;
the first electric valve 15 and the first manual valve 16 are sequentially provided on the first pressure regulating pipe 13, and the first electric valve 15 is located at a position close to the first communication port 51, and the first manual valve 16 is located at a position away from the first communication port 51 with respect to the first electric valve 16;
the second electric valve 17 and the second manual valve 18 are provided in this order on the second pressure adjusting line 14, and the second electric valve 17 is located at a position close to the second communication port 52, and the second manual valve 18 is located at a position away from the second communication port 52 with respect to the second electric valve 17.
The acquisition module is arranged on the action module and comprises a front monitoring unit 19, a rear first monitoring unit 20 and a rear second monitoring unit 21;
in the present embodiment, the pre-monitoring unit 19 is provided on the second pressure regulating line 14 at a position close to the second communication port 52 with respect to the second electric valve 17;
the first rear monitoring unit 20 is disposed on the first pressure regulating line 13 and is located at a position away from the first electrically operated valve 15 with respect to the first manually operated valve 16;
a second downstream monitoring unit 21 is disposed on the second pressure regulating line 14 at a location remote from the second electrically operated valve 17 relative to the second manually operated valve 18.
In the partial structure of the device for preventing the vibration of the 350WM once-through boiler when water is discharged under pressure shown in FIG. 2: the first electric valve 15 is used for pressure relief, and the second electric valve 17 is used for further pressure relief so as to prevent the pressure relief speed from failing to meet the requirement; the first manual valve 16 and the second manual valve 18 are used for preventing pressure leakage through the manual valves when the front electric valves cannot be closed tightly.
Fig. 3 is a schematic diagram showing a partial structure of an apparatus for preventing vibration during discharging water under pressure of a 350WM dc boiler according to another embodiment of the present invention, in which a pre-monitoring unit 19 is disposed on the first pressure regulating pipe 13 and is located close to the first communication port 51 relative to the first electrically operated valve 15. This embodiment shows another installation position of the front monitoring unit 19, and the rest of the structure of the device is the same as the structure of the device shown in fig. 2, which is not described herein again.
Fig. 4 is a schematic diagram illustrating a connection relationship between the acquisition module and the interaction module provided by the present invention:
the graphic display unit 22 is electrically connected to the sound output unit 23, and the front monitor unit 19, the rear first monitor unit 20 and the rear second monitor unit 21 are electrically connected to the graphic display unit 22.
The preposed monitoring unit 19 is used for acquiring the pressure in the furnace from a database or acquiring the pressure in the furnace in real time by arranging a sensor and sending the acquired data information to the graphic display unit 22;
a rear first monitoring unit 20 for detecting whether the first pressure regulating pipeline 13 has gas leakage or not and sending the detected data information to a graphic display unit 22;
the rear second monitoring unit 21 is used for detecting whether the second pressure regulating pipeline 14 generates gas leakage or not and sending the detected data information to the graphic display unit 22;
the graphic display unit 22 is used for acquiring and processing the received data information and displaying the processed information. If the data information meeting the preset condition is judged in the process of processing the data information, the information is preferentially displayed, and meanwhile, the sound output signal is sent to the sound output unit 23;
the sound output unit 23 is used for receiving the instruction signal from the graphic display unit 22 and making a sound to prompt or warn.
According to the utility model, two pressure regulating pipelines are additionally arranged, and each pressure regulating pipeline is provided with an electric valve respectively, so that the pressure at the outlet of the separator of the boiler is regulated, and the saturation temperature corresponding to the pressure is lower than the temperature of the water-cooled wall of the spiral section of the boiler, thereby regulating the temperature of the water-cooled wall of the spiral section and preventing the boiler from vibrating when water is discharged under pressure. And each pressure regulating pipeline is also provided with a manual valve respectively, and the manual valve is used for further preventing gas leakage under the condition that the electric valve cannot be closed tightly. The device is also provided with a graphic display unit and a sound output unit, so that a user can clearly and visually know the current working state of the device, the pressure in the furnace and whether gas leakage occurs outside the furnace, and can timely send out a prompt or a warning through the sound output unit when abnormality is detected, thereby further ensuring the safety during working.
Finally, it should be noted that the utility model is not limited to the specific embodiments described above, but that numerous modifications and variations can be made by those skilled in the art in light of the inventive concept. In summary, the technical solutions available to those skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (5)
1. The utility model provides a prevent device of 350WM once-through boiler vibration when area is pressed and is released water which characterized in that, the device includes collection module, interactive module and action module:
the action module is arranged on a rear smoke well lower annular collecting box (5) in a mixing collecting box (2) of the boiler and comprises a first pressure regulating pipeline (13) and a second pressure regulating pipeline (14) which are communicated with the rear smoke well lower annular collecting box (5), wherein a communication port of the first pressure regulating pipeline (13) and the rear smoke well lower annular collecting box (5) is marked as a first communication port (51), and a communication port of the second pressure regulating pipeline (14) and the rear smoke well lower annular collecting box (5) is marked as a second communication port (52);
a first electric valve (15) and a first manual valve (16) are arranged on the first pressure regulating pipeline (13), and a second electric valve (17) and a second manual valve (18) are arranged on the second pressure regulating pipeline (14);
the acquisition module is arranged on the action module, and the acquisition module is electrically connected with the interaction module.
2. The apparatus of claim 1, wherein the means for preventing vibration during a 350WM once-through boiler blow-down with pressure comprises:
the first electric valve (15) and the first manual valve (16) are sequentially arranged on the first pressure regulating pipeline (13), the first electric valve (15) is positioned close to the first communication port (51), and the first manual valve (16) is positioned far away from the first communication port (51) relative to the first electric valve (15);
the second electric valve (17) and the second manual valve (18) are sequentially arranged on the second pressure regulating pipeline (14), the second electric valve (17) is located at a position close to the second communication port (52), and the second manual valve (18) is located at a position far away from the second communication port (52) relative to the second electric valve (17).
3. The apparatus of claim 2, wherein the means for preventing vibration during a 350WM once-through boiler blow-down with pressure comprises: the acquisition module comprises a front monitoring unit (19), a rear first monitoring unit (20) and a rear second monitoring unit (21);
the prepositive monitoring unit (19) is arranged on the first pressure regulating pipeline (13) and is positioned close to the first communication port (51) relative to the first electric valve (15); or, the prepositive monitoring unit (19) is arranged on the second pressure regulating pipeline (14) and is positioned close to the second communication port (52) relative to the second electric valve (17);
the first rear monitoring unit (20) is arranged on the first pressure regulating pipeline (13) and is positioned far away from the first communication port (51) relative to the first manual valve (16);
the second post-positioned monitoring unit (21) is provided on the second pressure-adjusting line (14) and is located at a position away from the second communication port (52) with respect to the second manual valve (18).
4. The apparatus according to claim 3, wherein the interactive module comprises a graphic display unit (22) and an audio output unit (23), the graphic display unit (22) is electrically connected with the audio output unit (23);
the front monitoring unit (19), the rear first monitoring unit (20) and the rear second monitoring unit (21) are electrically connected with the graphic display unit (22).
5. An arrangement for preventing oscillations in a 350WM once-through boiler with pressurized discharge as in claim 1, characterized by said first pressure regulating line (13) being placed on one side of said rear smokestack annular header (5) and said second pressure regulating line (14) being placed on the other side of said rear smokestack annular header (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220075884.7U CN216281327U (en) | 2022-01-13 | 2022-01-13 | Device for preventing 350WM direct current boiler from vibrating when pressurized water discharge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220075884.7U CN216281327U (en) | 2022-01-13 | 2022-01-13 | Device for preventing 350WM direct current boiler from vibrating when pressurized water discharge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216281327U true CN216281327U (en) | 2022-04-12 |
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ID=81059842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220075884.7U Active CN216281327U (en) | 2022-01-13 | 2022-01-13 | Device for preventing 350WM direct current boiler from vibrating when pressurized water discharge |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216281327U (en) |
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2022
- 2022-01-13 CN CN202220075884.7U patent/CN216281327U/en active Active
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