CN111156834B - Noise-reducing steam temperature-reducing device and method - Google Patents
Noise-reducing steam temperature-reducing device and method Download PDFInfo
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- CN111156834B CN111156834B CN201911417918.5A CN201911417918A CN111156834B CN 111156834 B CN111156834 B CN 111156834B CN 201911417918 A CN201911417918 A CN 201911417918A CN 111156834 B CN111156834 B CN 111156834B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28C—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA COME INTO DIRECT CONTACT WITHOUT CHEMICAL INTERACTION
- F28C3/00—Other direct-contact heat-exchange apparatus
- F28C3/06—Other direct-contact heat-exchange apparatus the heat-exchange media being a liquid and a gas or vapour
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
- F28F27/02—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus for controlling the distribution of heat-exchange media between different channels
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- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/16—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/161—Methods or devices for protecting against, or for damping, noise or other acoustic waves in general in systems with fluid flow
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Abstract
The invention discloses a noise-reducing steam temperature-reducing device and method. A user inputs a target parameter of steam at an outlet of the steam temperature reducing device and a maximum steam temperature reducing device working noise value allowed by the user in a user input end; according to the reading of the instrument in the data acquisition system, the computer of the control system calculates the required flow of the desuperheating water; opening a main temperature-reducing water regulating valve and a sub-regulating valve of a first-stage temperature-reducing water nozzle through a control system; the noise of the desuperheater is measured through a noise monitoring system, if the noise is higher than the requirement of a user, a control system opens a second-stage desuperheating water regulating valve and simultaneously regulates a sub-regulating valve of a first-stage nozzle, so that the spraying speeds of the desuperheating water at all stages of desuperheating water nozzles are equal, the spraying speed of the desuperheating water is reduced, and the purpose of reducing the noise is achieved; if the user requirement is not met, the opened temperature-reducing water-content adjusting valve can be continuously adjusted according to the method, and the next-stage temperature-reducing water-content adjusting valve is opened until the user requirement is met.
Description
Technical Field
The invention relates to a steam temperature reduction device, in particular to a steam temperature reduction device aiming at noise reduction and a noise reduction method thereof.
Background
The working principle of the steam temperature reducing device is that the temperature reducing water is sprayed into high-temperature superheated steam, so that the high-temperature superheated steam and the temperature reducing water are mixed in the main steam channel and exchange heat is generated. The desuperheating water is vaporized in the main steam passage, the temperature of the superheated steam is reduced, and finally saturated steam with higher thermal efficiency is obtained to meet the requirements of downstream users.
In the working process of the steam temperature reducing device, the temperature reducing water is sprayed out from the nozzle at a high speed, huge noise can be generated, meanwhile, the temperature reducing water sprayed into the main steam channel at a high speed can generate strong disturbance on the flow of the steam, violent noise can be caused, and the spraying speed of the temperature reducing water is reduced, so that the noise in the working process of the steam temperature reducing device can be effectively reduced. The heat released by the high-temperature superheated steam is reduced to the target saturated steam is constant, and the heat is absorbed by the temperature-reduced water, so that the flow rate of the required temperature-reduced water is also constant. The existing steam temperature reduction device is only provided with a one-level temperature reduction water nozzle, once the flow of the required temperature reduction water is determined, the injection speed of the temperature reduction water cannot be changed, on the premise of ensuring the flow of the temperature reduction water, the injection speed of the temperature reduction water is reduced, the noise can be effectively reduced, and the mode that the multistage temperature reduction water nozzles are configured can be used for realizing the purpose.
Disclosure of Invention
The invention aims to provide a noise-reducing steam temperature-reducing device and method, which can reduce noise in the working process of the steam temperature-reducing device to the requirements of users.
The technical scheme adopted by the invention is as follows:
a noise-reducing steam temperature-reducing device comprises a main steam channel, a temperature-reducing water channel and a noise meter, wherein the temperature-reducing water channel consists of a temperature-reducing water main channel, a temperature-reducing water channel and a temperature-reducing water nozzle;
the steam main channel is a Venturi tube-shaped channel, and a steam main channel inlet flow meter, a steam main channel inlet pressure meter and a steam main channel inlet thermometer are arranged at the inlet of the steam main channel and are respectively used for detecting the flow, pressure and temperature of steam entering the steam main channel;
a plurality of circles of mounting holes are formed in the wall surface of the steam main channel at different positions along the path; each circle of mounting holes on the wall surface of the channel are uniformly distributed along the circumferential direction of the cross section of the pipeline, a desuperheating water nozzle is mounted in each mounting hole, and the spraying direction of the desuperheating water nozzle is along the radial direction of the main steam channel to form a primary desuperheating water nozzle; each stage of the temperature-reducing water nozzle is connected with an annular water supply pipe;
the main desuperheating water channel is provided with a main desuperheating water channel inlet flowmeter, a main desuperheating water channel inlet pressure gauge and a main desuperheating water channel inlet thermometer which are respectively used for detecting desuperheating water flow, pressure and temperature in the main desuperheating water channel; the main desuperheating water passage is also provided with a main desuperheating water adjusting valve for controlling the flow of desuperheating water in the main desuperheating water passage;
the tail end of the main desuperheating water channel is connected with a plurality of desuperheating water channels, and each desuperheating water channel is provided with a desuperheating water regulating valve for independently controlling the flow of desuperheating water in each desuperheating water channel; the annular water supply pipes of each circle of the temperature-reducing water nozzles are respectively communicated with a temperature-reducing water channel;
the noise meter is arranged on the side part of the main steam channel and is used for measuring the noise of the main steam channel in the working process;
the user input end is used for inputting physical parameters of target steam required by a user and the maximum allowable noise of the steam temperature reducing device during working;
the user input end, the steam main channel inlet flowmeter, the steam main channel inlet pressure gauge, the steam main channel inlet thermometer, the desuperheating water main channel inlet flowmeter, the desuperheating water main channel inlet pressure gauge, the desuperheating water main channel inlet thermometer, the desuperheating water main regulating valve and the desuperheating water regulating valve are all connected to a computer serving as a control system.
Preferably, the number of the mounting holes on the wall surface of the main steam channel is equal to that of the temperature-reducing water nozzles, and the positions of the mounting holes correspond to those of the temperature-reducing water nozzles one by one.
Preferably, the desuperheating water nozzle is installed at a necking position of the main steam passage.
Preferably, the wall surface of the steam main channel is provided with 3 circles of the reduced-temperature water nozzles, and each circle is provided with 4 reduced-temperature water nozzles.
Another object of the present invention is to provide a noise reduction method using the steam temperature reduction device in any of the above aspects, which includes the following steps:
s1: inputting a target physical property parameter of steam at an outlet of the steam desuperheater by a user and inputting an allowable maximum noise of the steam desuperheater in the operation process by the user; the target physical property parameters of the steam comprise target pressure, temperature and flow rate of the steam;
s2: according to steam target physical property parameters input by a user, combining the steam in the steam main channel and the flow, pressure and temperature of the desuperheating water in the desuperheating water main channel, which are acquired by a data acquisition system, and calculating the required target desuperheating water flow through heat balance;
s3: controlling the main desuperheating water regulating valve and a desuperheating water sub-regulating valve corresponding to a first-stage desuperheating water nozzle at the most upstream position in the main steam channel to be opened, and spraying desuperheating water into the main steam channel through the first-stage desuperheating water nozzle according to the target desuperheating water flow;
s4: monitoring the noise of the steam temperature reduction device through a noise meter, if the current noise is higher than the allowable maximum noise input by the user, opening a temperature reduction water regulating valve corresponding to the next-stage temperature reduction water nozzle, and regulating the temperature reduction water regulating valve which is opened before, so that the spraying flow of the temperature reduction water nozzles opened at each stage is the same, and the sum of the spraying flow of all the opened temperature reduction water nozzles is equal to the target temperature reduction water flow, thereby reducing the speed of spraying the temperature reduction water into the steam main channel;
s5: and repeating S4 again until the current noise is not higher than the allowable maximum noise input by the user, and when the noise requirement is met, keeping the current temperature-reducing water spraying state and not starting the temperature-reducing water partial adjusting valve corresponding to the next-stage temperature-reducing water nozzle.
Preferably, said target desuperheating water flow rate is calculated in said control system.
Preferably, in S4, the noise signal of the steam temperature reducing device monitored by the noise meter is fed back to the control system and is judged by the control system.
Preferably, in S4, if the current noise is higher than the maximum noise allowed by the user, the control system calculates the opening degree of the temperature-reducing water-adjusting valve corresponding to each stage of temperature-reducing water nozzle, and automatically controls the opening degree.
The invention has the beneficial effects that: the spraying speed of the desuperheating water is controlled by controlling the opening stages of the desuperheating water passage, the more the opening stages of the desuperheating water are, the lower the spraying speed of the desuperheating water is, the lower the noise of the steam desuperheating device is, and after the noise of the steam desuperheating device is smaller than the maximum noise allowed by a user, the opening stages of the desuperheating water regulating valve can meet the requirement.
Drawings
FIG. 1 is a schematic view of the apparatus of the present invention
FIG. 2 is a schematic diagram illustrating the principle of the noise reduction method of the present invention
In the figure: 1 is the computer, 2 is the user input end, 3 is steam main entrance to the channels flowmeter, 4 is steam main entrance to the channels manometer, 5 is steam main entrance to the channels thermometer, 6 is the steam main entrance, 7 is the noise meter, 8 is desuperheating water main entrance to the channels flowmeter, 9 is desuperheating water main entrance to the channels manometer, 10 is desuperheating water main entrance to the channels thermometer, 11 is the desuperheating water main entrance, 12 is desuperheating water main regulating valve, 13 is desuperheating moisture passageway, 14 is desuperheating moisture regulating valve, 15 is desuperheating water nozzle.
Detailed Description
The present invention is described in further detail below with reference to the attached drawings and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, in this embodiment, a noise reduction steam attemperation device includes a main steam channel, an attemperation water channel, a control system, a data acquisition system, an execution system, and a feedback system;
wherein, steam main channel 6 is venturi shape passageway, has to open on the passageway wall to have a plurality of rings of mounting holes, and the mounting hole is opened totally in this embodiment has 3 rings, and every circle is 4, and every circle of mounting hole all along the cross section circumference equipartition of pipeline. The 3 circles of mounting holes are positioned at different positions along the path of the steam on the wall surface of the steam main channel 6. The desuperheating water passage is composed of a desuperheating water main passage 11, a desuperheating water passage 13 and a desuperheating water nozzle 15. The temperature-reducing water channels 11 are 3 and connected in parallel to the temperature-reducing water main channel 11, and the temperature-reducing water is uniformly conveyed through the temperature-reducing water main channel 11. The 3 parallel desuperheating water channels 11 are respectively connected with 1 annular water supply pipe surrounding the steam main channel 6. Each mounting hole of the main steam channel 6 is provided with a desuperheating water nozzle 15, the spraying direction of the desuperheating water nozzles 15 is radial direction of the main steam channel 11, and each circle of desuperheating water nozzles 15 is called as a first-stage desuperheating water nozzle 15, so that the device has 3 stages of desuperheating water nozzles 15 in total, the most upstream is a first stage, and the second stage and the third stage are sequentially arranged after the first stage and the third stage. The desuperheating water in the main steam channel 6 passes through the three desuperheating water channels 13 and is then sprayed along the annular water supply pipe towards the interior of the main steam channel 6 through the corresponding desuperheating water nozzles 15. The number of the holes on the wall surface of the steam main channel 6 is equal to the number of the temperature-reducing water nozzles 15 in the temperature-reducing water channel, and the positions of the holes correspond to one another.
In the steam temperature reducing device, a control system is composed of a computer 1.
In the steam temperature reducing device, an execution system consists of a temperature reducing water main regulating valve 12 and a temperature reducing water regulating valve 14. A main temperature-reducing water adjusting valve 12 is arranged on the main temperature-reducing water channel 11; each of the desuperheating water passages 13 is provided with a desuperheating water regulating valve 14. Since the temperature-reducing water nozzles 15 are divided into 3 stages, we will also name the 3 temperature-reducing water adjusting valves 14 that control the 3-stage temperature-reducing water nozzles 15 as a first-stage temperature-reducing water adjusting valve, a second-stage temperature-reducing water adjusting valve, and a third-stage temperature-reducing water adjusting valve, respectively. The main desuperheating water regulating valve 12 and each desuperheating water regulating valve 14 in the execution system are connected with the computer 1 in the control system and controlled by the control system to regulate the flow rate of the desuperheating water and the spraying speed of the desuperheating water at the desuperheating water nozzle 15. Wherein the main desuperheating water adjusting valve 12 can adjust the flow rate of desuperheating water flowing through the main desuperheating water passage 11, thereby ensuring that the total amount of desuperheating water sprayed toward the inside of the main steam passage 6 satisfies a corresponding target, and the desuperheating water partial adjusting valve 14 functions to adjust the spraying speed of each desuperheating water nozzle 15. When only 1 temperature-reducing water regulating valve 14 is opened, the temperature-reducing water in the temperature-reducing water main channel 11 needs to be sprayed into the steam main channel 6 through the temperature-reducing water channel 13 where the temperature-reducing water regulating valve 14 is located, and at this time, the spraying speed in the temperature-reducing water nozzle 15 is the largest, and the generated noise is also the largest. When the rest of the desuperheating water regulating valves 14 are also opened, the desuperheating water in the desuperheating water main channel 11 can be divided into the plurality of desuperheating water channels 13 to be sprayed into the steam main channel 6, at this time, the spraying speed in the desuperheating water nozzles 15 can be correspondingly reduced step by step, and the generated noise can be gradually reduced.
Among this steam temperature-reducing device, data acquisition system is by steam main entrance to the passageway flowmeter 3, temperature-reducing water main entrance to the passageway flowmeter 8, steam main entrance to the passageway manometer 4, temperature-reducing water main entrance to the passageway manometer 9, steam main entrance to the passageway thermometer 5, temperature-reducing water main entrance to the passageway thermometer 10 and user input 2 are constituteed, wherein steam main entrance to the passageway flowmeter 3, steam main entrance to the passageway manometer 4, steam main entrance to the passageway thermometer 5 installs in 6 entrances of steam main passageway, be used for detecting the steam flow who gets into steam main passageway 6 respectively, pressure and temperature. The inlet flowmeter 8 of the desuperheating water main channel, the inlet pressure gauge 9 of the desuperheating water main channel and the inlet thermometer 10 of the desuperheating water main channel are arranged at the inlet of the desuperheating water main channel 11 and are respectively used for detecting desuperheating water flow, pressure and temperature entering the desuperheating water main channel 11. The user input end 2 is used for inputting physical parameters of the target steam required by a user, including the temperature, the pressure and the flow rate of the target steam and the maximum allowable noise when the steam temperature reducing device works. A steam main channel inlet flowmeter 3, a desuperheating water main channel inlet flowmeter 8, a steam main channel inlet pressure gauge 4, a desuperheating water main channel inlet pressure gauge 9, a steam main channel inlet thermometer 5, a desuperheating water main channel inlet thermometer 10 and a user input end 2 in the data acquisition system are all connected with a computer 1 in the control system. After the data acquired by the data acquisition system is transmitted to the computer 1 in the control system, the computer 1 calculates the required temperature-reducing water flow, and then controls the opening of the main temperature-reducing water regulating valve 12 and the first-stage regulating valve 14 according to the required temperature-reducing water flow.
The feedback system consists of a noise meter 7, the noise meter 7 being connected to the computer 1 in the control system. The noise meter 7 in the feedback system measures the noise of the steam desuperheating device during operation and sends a noise signal to the computer 1 of the control system.
As shown in fig. 2, the user inputs in the user input 2 a target pressure and a target temperature of the steam at the outlet of the steam desuperheater, and an allowable maximum noise level during operation of the steam desuperheater. The computer 1 combines the readings of a steam main channel inlet flowmeter 3, a steam main channel inlet pressure gauge 4 and a steam main channel inlet thermometer 5 at the inlet of a steam main channel 6, and a desuperheating water main channel inlet pressure gauge 9 and a desuperheating water main channel inlet thermometer 10 at the inlet of a desuperheating water main channel 11, and obtains the required desuperheating water flow through heat balance. The computer 1 controls the opening of the main desuperheating water regulating valve 12 on the main desuperheating water passage 11 and controls the opening of the sub desuperheating water regulating valve 14 on the first stage in the desuperheating water passage 13 according to the calculated required desuperheating water flow. The noise meter 7 measures the noise in the working process of the steam temperature-reducing device, the data are transmitted to the computer 1, and the computer 1 compares the data to find that the noise value measured by the noise meter 7 is larger than the maximum allowable noise value input by a user through the user input end 2, so that the computer 1 controls the opening of the temperature-reducing water regulating valve 14 of the second stage of the temperature-reducing water channel 13, and simultaneously adjusts the opening degree of the temperature-reducing water regulating valve 14 on the first stage of the temperature-reducing water channel 13 to enable the spraying speeds of the temperature-reducing water nozzles 15 in the two stages to be equal, and the purpose of reducing the spraying speed of the temperature-reducing water is achieved. The noise meter 7 measures the noise of the steam temperature reducing device again in the working process, the data are also transmitted to the computer 1, the computer 1 compares the data again, and the noise value measured by the noise meter 7 is still larger than the allowed maximum noise value input by the user through the user input end 2, so that the computer 1 controls the third-stage temperature reducing water regulating valve 14 of the temperature reducing water channel 13 to be opened, and simultaneously regulates the opening degrees of the temperature reducing water regulating valves 14 on the first stage and the second stage of the temperature reducing water channel 13, so that the spraying speeds of the temperature reducing water nozzles 15 in the three stages are equal, and the purpose of reducing the spraying speed of the temperature reducing water is achieved. The noise meter 7 measures the noise of the steam temperature reducing device in the working process for the third time, the data are still transmitted to the computer 1, the computer 1 continuously compares the data, the noise value measured by the noise meter 7 is found to be smaller than the allowed maximum noise value input by the user through the user input end 2, the noise condition of the steam temperature reducing device at the moment meets the user requirement, the control and adjustment work of the device is stopped, and the device can work stably.
Therefore, the invention provides a noise reduction method based on the steam temperature reduction device, which comprises the following steps:
s1: inputting a target physical property parameter of steam at an outlet of the steam desuperheater by a user and inputting an allowable maximum noise of the steam desuperheater in the operation process by the user; the target physical property parameters of the steam comprise target pressure, temperature and flow rate of the steam;
s2: according to steam target physical property parameters input by a user, combining the steam in the steam main channel 6 and the flow, pressure and temperature of the desuperheating water in the desuperheating water main channel 11 acquired by the data acquisition system, and calculating the required target desuperheating water flow through heat balance;
s3: controlling the main desuperheating water regulating valve 12 and a desuperheating water partial regulating valve 14 corresponding to a first-stage desuperheating water nozzle 15 at the most upstream position in the main steam channel 6 to be opened, and spraying desuperheating water into the main steam channel 6 through the first-stage desuperheating water nozzle 15 according to the target desuperheating water flow;
s4: monitoring the noise of the steam temperature reduction device through a noise meter 7, if the current noise is higher than the allowable maximum noise input by the user, opening a temperature reduction water sub-regulating valve 14 corresponding to the next-stage temperature reduction water nozzle 15, and regulating the previously opened temperature reduction water regulating valve 14 to ensure that the spraying flow in the temperature reduction water nozzle 15 opened at each stage is the same, and the sum of the spraying flow in all the opened temperature reduction water nozzles 15 is equal to the target temperature reduction water flow, so that the spraying speed of the temperature reduction water into the steam main channel 6 is reduced;
s5: and repeating the step S4 again until the current noise is not higher than the allowable maximum noise input by the user, keeping the current temperature-reducing water spraying state when the noise requirement is met, and not starting the temperature-reducing water partial regulating valve 14 corresponding to the next-stage temperature-reducing water nozzle 15 to finish the flow control of the temperature-reducing water.
Of course, in actual operation, the noise meter 7 may continue to monitor the noise of the steam attemperation device after step S5, and may continue to open the attemperation water nozzle 15 of the next stage if the noise is not satisfied.
The above-described embodiments are merely preferred embodiments of the present invention, which should not be construed as limiting the invention. Various changes and modifications may be made by one of ordinary skill in the pertinent art without departing from the spirit and scope of the present invention. Therefore, the technical scheme obtained by adopting the mode of equivalent replacement or equivalent transformation is within the protection scope of the invention.
Claims (8)
1. The utility model provides a steam temperature-reducing device that makes an uproar falls which characterized in that: the steam desuperheating water device comprises a main steam channel (6), a desuperheating water channel and a noise meter (7), wherein the desuperheating water channel consists of a desuperheating water main channel (11), a desuperheating water channel (13) and a desuperheating water nozzle (15);
the steam main channel (6) is a Venturi tube-shaped channel, and a steam main channel inlet flowmeter (3), a steam main channel inlet pressure gauge (4) and a steam main channel inlet thermometer (5) are arranged at an inlet of the steam main channel (6) and are respectively used for detecting the flow, pressure and temperature of steam entering the steam main channel (6);
a plurality of circles of mounting holes are formed in the wall surface of the steam main channel (6) at different positions along the path; each circle of mounting holes on the wall surface of the channel are uniformly distributed along the circumferential direction of the cross section of the pipeline, a temperature reduction water nozzle (15) is mounted in each mounting hole, and the spraying direction of the temperature reduction water nozzle (15) is along the radial direction of the steam main channel (6) to form a first-stage temperature reduction water nozzle (15); each stage of the temperature-reducing water nozzles (15) is connected with an annular water supply pipe;
a desuperheating water main channel inlet flowmeter (8), a desuperheating water main channel inlet pressure gauge (9) and a desuperheating water main channel inlet thermometer (10) are arranged on the desuperheating water main channel (11) and are respectively used for detecting desuperheating water flow, pressure and temperature in the desuperheating water main channel (11); the main temperature-reducing water passage (11) is also provided with a main temperature-reducing water adjusting valve (12) for controlling the flow of temperature-reducing water in the main temperature-reducing water passage (11);
the tail end of the main desuperheating water channel (11) is connected with a plurality of desuperheating water channels (13), and each desuperheating water channel (13) is provided with a desuperheating water regulating valve (14) for independently controlling the flow of desuperheating water in each desuperheating water channel (13); the annular water supply pipes of each circle of the temperature-reducing water nozzles (15) are respectively communicated with a temperature-reducing water channel (13);
the noise meter (7) is arranged at the side part of the main steam channel (6) and is used for measuring the noise of the main steam channel (6) in the working process;
the user input end (2) is used for inputting physical parameters of target steam required by a user and the maximum allowable noise of the steam temperature reducing device during working;
the steam main channel temperature-reducing system is characterized in that a user input end (2), a steam main channel inlet flowmeter (3), a steam main channel inlet pressure gauge (4), a steam main channel inlet thermometer (5), a temperature-reducing water main channel inlet flowmeter (8), a temperature-reducing water main channel inlet pressure gauge (9), a temperature-reducing water main channel inlet thermometer (10), a temperature-reducing water main adjusting valve (12) and a temperature-reducing water sub-adjusting valve (14) are all connected to a computer (1) serving as a control system.
2. The noise reducing steam desuperheating device of claim 1, wherein: the number of the mounting holes on the wall surface of the steam main channel (6) is equal to that of the desuperheating water nozzles (15), and the mounting holes correspond to the positions of the desuperheating water nozzles one to one.
3. The noise reducing steam desuperheating device of claim 1, wherein: the temperature-reducing water nozzle (15) is arranged at the necking position of the main steam channel (6).
4. The noise reducing steam desuperheating device of claim 1, wherein: and 3 circles of temperature-reducing water nozzles (15) are arranged on the wall surface of the steam main channel (6), and each circle is provided with 4 temperature-reducing water nozzles (15).
5. A noise reduction method using the steam temperature reducing device as defined in any one of claims 1 to 4, comprising the steps of:
s1: inputting a target physical property parameter of steam at an outlet of the steam desuperheater by a user and inputting an allowable maximum noise of the steam desuperheater in the operation process by the user; the target physical property parameters of the steam comprise target pressure, temperature and flow rate of the steam;
s2: according to steam target physical property parameters input by a user, the flow, pressure and temperature of steam in the steam main channel (6) and desuperheating water in the desuperheating water main channel (11) collected by the data collection system are combined, and the required target desuperheating water flow is calculated through heat balance;
s3: controlling a main temperature-reducing water regulating valve (12) and a temperature-reducing water regulating valve (14) corresponding to a first-stage temperature-reducing water nozzle (15) at the most upstream in the main steam channel (6) to be opened, and spraying temperature-reducing water into the main steam channel (6) through the first-stage temperature-reducing water nozzle (15) according to the target temperature-reducing water flow;
s4: monitoring the noise of the steam temperature reduction device through a noise meter (7), if the current noise is higher than the allowable maximum noise input by the user, opening a temperature reduction water regulating valve (14) corresponding to the next-stage temperature reduction water nozzle (15), and regulating the temperature reduction water regulating valve (14) which is opened before, so that the spraying flow of the temperature reduction water nozzles (15) which are opened at each stage is the same, and the sum of the spraying flows of all the opened temperature reduction water nozzles (15) is equal to the target temperature reduction water flow, thereby reducing the speed of spraying the temperature reduction water into the steam main channel (6);
s5: and repeating the step S4 again until the current noise is not higher than the allowable maximum noise input by the user, and when the noise requirement is met, keeping the current temperature-reducing water spraying state and not opening the temperature-reducing water regulating valve (14) corresponding to the next-stage temperature-reducing water nozzle (15).
6. A method of reducing noise in a steam attemperating device as defined in claim 5, wherein the target attemperating water flow is calculated in the control system.
7. A method for reducing noise in a steam attemperator according to claim 5, wherein in S4, the noise signal of the steam attemperator monitored by the noise meter (7) is fed back to the control system and is judged by the control system.
8. A method for reducing noise in a steam attemperating device as defined in claim 5, wherein in S4, if the current noise is higher than the maximum noise allowed by the user, the opening degree of the attemperating water control valve (14) corresponding to each stage of attemperating water nozzle (15) is calculated by the control system and automatically controlled.
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| JPS59181909U (en) * | 1983-05-18 | 1984-12-04 | 株式会社日立製作所 | Thermal shock prevention device |
| CN2283131Y (en) * | 1995-01-14 | 1998-06-03 | 马锦玉 | Water-spraying type steam temp. reducer |
| CN1115512C (en) * | 1995-07-19 | 2003-07-23 | 陈刚乾 | Chen's steam-water mixture heater |
| CN2767939Y (en) * | 2004-11-04 | 2006-03-29 | 徐建国 | Jet-type steam and water mixer |
| CN201162947Y (en) * | 2008-02-22 | 2008-12-10 | 杭州华惠阀门有限公司 | Attemperation and pressure reducing device |
| CN103512387A (en) * | 2013-09-25 | 2014-01-15 | 浙江力聚热水机有限公司 | Noise-reduced steam heater |
| CN203880685U (en) * | 2014-05-06 | 2014-10-15 | 大唐鲁北发电有限责任公司 | Steam temperature reducing device of heat supply system |
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2019
- 2019-12-31 CN CN201911417918.5A patent/CN111156834B/en active Active
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