Operation control method of movable energy-saving air inlet and outlet noise elimination system

Abstract

The invention discloses an operation control method of a movable energy-saving air inlet and outlet noise elimination system. The operation control method comprises the steps that the maximum noise value Lmax or the minimum noise value Lmin in a monitoring point is found out according to a set monitoring point target value Lmb, and a movable noise elimination unit in an air inlet and outlet closest to the monitoring point is adjusted; and the movable silencing unit is adjusted and moved from the energy-saving position to the noise reduction position or from the noise reduction position to the energy-saving position until the noise values of all the monitoring points are not larger than the target value Lmb of the monitoring points, and the movable silencing unit is closest to the energy-saving position. The system has the beneficial effects that the movable channel part is adjusted in real time, so that energy loss caused by wind resistance can be effectively reduced while the noise reduction requirement is met, remarkable energy-saving benefits are achieved, the noise reduction requirements of various different environments such as day and night changes, seasonal differences and load fluctuation of equipment needing noise reduction can be flexibly met, and the system is suitable for popularization and application. The noise reduction requirement is met, and meanwhile the energy-saving effect can be improved as much as possible.

Description

Technical Field

[0001] The present application belongs to the technical field of noise reduction and energy saving, and specifically relates to an operation control method of a movable energy-saving inlet and outlet air silencer system. Background Art

[0002] There is a patent application for "A movable energy-saving inlet and outlet air silencer system" submitted on the same day. The silencer system in this application has the function of real-time adjustment of the movable channel part, so that it can effectively reduce the energy loss caused by wind resistance while meeting the noise reduction needs, thereby achieving significant energy-saving benefits. It can flexibly respond to the noise reduction needs of various different environments such as day and night changes, seasonal differences, and load fluctuations of the equipment to be noise reduced.

[0003] However, how to make specific adjustments to improve the energy-saving effect as much as possible while meeting the noise reduction requirements is an urgent problem to be solved by technical personnel in this field. Summary of the invention

[0004] The purpose of the present application is to provide an operation control method for a movable energy-saving inlet and outlet air silencer system, which solves the problem of how to operate and control the movable energy-saving inlet and outlet air silencer system.

[0005] The purpose of this application is achieved through the following technical solutions:

[0006] A method for controlling the operation of a movable energy-saving inlet and outlet air silencer system, the silencer system comprising an air inlet and outlet, wherein a plurality of fixed silencer units and a mobile silencer unit are arranged in the air inlet and outlet, the fixed silencer unit is fixed in the air inlet and outlet, and the mobile silencer unit moves forward and backward along a track in the wind in the air inlet and outlet through a guide rail assembly, and the track of the mobile silencer unit includes a noise reduction position between the fixed silencer units and an energy-saving position in front of and / or behind the fixed silencer units;

[0007] The operation control method includes: numbering the air inlets and outlets generating noise; setting up monitoring points, which are the target monitoring points for the factory boundary environment and / or the target monitoring points for the acoustic environment protection; and setting the target value L of the monitoring points according to the set target value L of the monitoring points. mb , find the maximum noise value L in the monitoring point max Or minimum noise value L min , adjust the mobile silencer unit in the air inlet and outlet closest to the monitoring point, and move the mobile silencer unit from the energy-saving position to the noise reduction position or from the noise reduction position to the energy-saving position until the noise value of all monitoring points is no greater than the monitoring point target value L mb , and the mobile silencer unit is closest to the energy-saving position.

[0008] Furthermore, according to the moving distance of the mobile silencer unit, the noise reduction position and the energy-saving position are divided into 0% energy-saving position, 10% energy-saving position, 20% energy-saving position, 30% energy-saving position, 40% energy-saving position, 50% energy-saving position, 60% energy-saving position, 70% energy-saving position, 80% energy-saving position, 90% energy-saving position and 100% energy-saving position.

[0009] Furthermore, at least three factory boundary environmental target monitoring points and at least one acoustic environment protection target monitoring point are arranged within 0.5 to 1.5 m outside the factory boundary wall.

[0010] Furthermore, the target value L of the monitoring point is set at 22:00 to 6:00 the next day. mb Set to 45 dB, and set the monitoring point target value L mb Set to 55 dB.

[0011] Furthermore, at night, the mobile silencer units at the air inlet and outlet are in the noise reduction position, and during the day, according to the target value L of the monitoring point mb Control and regulate the mobile silencer unit.

[0012] Furthermore, the operation control method includes an initial adjustment stage: first, all the mobile silencer units in the air inlet and outlet are moved to the energy-saving position, and the noise value of each monitoring point is obtained after the operation time t, and the maximum noise value and its corresponding monitoring point are found, and the air inlet and outlet closest to the monitoring point are found, and the mobile silencer unit in the air inlet and outlet is moved to the noise reduction position, and the noise value of each monitoring point is obtained after the operation time t. If all of them are less than the target value L of the monitoring point, mb The initial adjustment is completed and the fine adjustment phase begins. If at least one item is not less than the target value L of the monitoring point mb Repeat the above steps until all monitoring points are less than the monitoring point target value L mb .

[0013] Furthermore, the operation control method includes a fine-tuning stage: after the operation time t, the noise value of each monitoring point is obtained, the minimum noise value and its corresponding monitoring point are found, the air inlet and outlet closest to the monitoring point are found, and the mobile silencer unit in the air inlet and outlet is adjusted and moved from the noise reduction position to the energy saving position. After the operation time t is continued, the noise value of each monitoring point is obtained. If at least one item is not less than the target value L of the monitoring point, mb The fine adjustment is completed, and the state of the mobile silencer unit in the inlet and outlet of the previous step is the target state. If both are less than the target value L of the monitoring point mb Repeat the above steps until at least one item is not less than the target value L of the monitoring point. mb .

[0014] Furthermore, the preliminary adjustment stage is skipped, and before the fine adjustment stage, all the mobile silencer units in the air inlets and outlets are moved to the noise reduction position.

[0015] Furthermore, the status of the mobile silencer unit at the air inlet and outlet corresponding to different noise reduction requirements is archived in the storage module of the central control computer. When the required status of the silencer system is consistent with the archived status, the central control computer directly calls out the archived status and adjusts the mobile silencer unit to the archived status.

[0016] Furthermore, in response to seasonal differences, in winter, due to changes in meteorological conditions, noise reduction facilities only need to be partially operated, or due to the volatility of the overall production load, the overall number of operating noise reduction facilities is reduced under non-full load conditions or special operating conditions. Under such conditions, non-operating noise reduction facilities have no noise contribution to the outside world, and operating noise reduction facilities have reduced noise reduction requirements, but factory boundary noise control must meet standards; at the same time, under such conditions, the inlet and outlet silencers are adjusted separately during the day and night.

[0017] The beneficial effects of the present application are as follows: by setting the silencer unit in the inlet and outlet silencer device as a fixed channel part and a movable channel part, the movable channel part is adjusted in real time according to the actual needs of the system operation and the different noise reduction requirements of the external environment, so that it can effectively reduce the energy loss caused by wind resistance while meeting the noise reduction requirements, thereby achieving significant energy-saving benefits, and can flexibly respond to the noise reduction needs of various different environments such as day and night changes, seasonal differences, and load fluctuations of the equipment to be noise reduced, and can improve the energy-saving effect as much as possible while meeting the noise reduction requirements.

[0018] The aforementioned main scheme of the present application and its further options can be freely combined to form multiple schemes, all of which are schemes that can be adopted and claimed for protection in the present application; and in the present application, (non-conflicting options) can also be freely combined with each other and with other options. After understanding the scheme of the present application, those skilled in the art can understand that there are many combinations based on the prior art and common knowledge, all of which are technical schemes to be protected by the present application, and they are not exhaustively listed here. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of this application.

[0020] Figure 2 It is a schematic diagram of the layout of this application.

[0021] Figure 3 is the electrical schematic diagram of this application.

[0022] In the figure: 1-air inlet and outlet, 2-fixed silencer unit, 3-mobile silencer unit, 4-guide rail assembly, 9-ventilation cooling tower. DETAILED DESCRIPTION

[0023] The following non-limiting examples are provided to illustrate the present application.

[0024] Example 1

[0025] refer to Figure 1 to Figure 3 As shown, a method for operating and controlling a movable energy-saving inlet and outlet air silencing system is provided. The silencing system comprises an air inlet and outlet 1, a fixed silencing unit 2, a movable silencing unit 3 and a guide rail assembly 4.

[0026] The air inlet and outlet 1 is used for air intake or air outlet during ventilation. The air inlet and outlet 1 can be the air outlet of the ventilation cooling tower 9, or can be the air outlet of other facilities that require noise reduction (natural ventilation cooling tower air inlet, subway vent). A plurality of fixed silencer units 2 and mobile silencer units 3 are arranged in the air inlet and outlet 1. The fixed silencer unit 2 is fixed in the air inlet and outlet 1 as a continuous noise reduction unit.

[0027] The mobile silencer unit 3 moves forward and backward along the trajectory in the wind in the air inlet and outlet 1 through the guide rail assembly 4. The trajectory of the mobile silencer unit 3 includes the noise reduction position between the fixed silencer units 2 and the energy-saving position in front of and / or behind the fixed silencer unit 2. When the mobile silencer unit 3 is moved to the noise reduction position between the fixed silencer units 2, the mobile silencer unit 3 performs noise reduction. At this time, the time period with high noise reduction requirements is applicable, but the wind resistance is large. When the mobile silencer unit 3 is moved to the energy-saving position in front of and / or behind the fixed silencer unit 2, the noise reduction effect of the mobile silencer unit 3 is reduced or disappears, and at the same time, the air duct area is expanded to reduce wind resistance. At this time, the time period with low noise reduction requirements is applicable, achieving the energy-saving effect of reducing electricity.

[0028] Depending on the season, day or night, or load, when there are working conditions that can reduce the amount of noise reduction, the mobile silencer unit is moved to meet the noise reduction requirements while effectively reducing the energy loss caused by wind resistance, achieving significant energy-saving benefits. The mobile silencer unit can move in the same or opposite direction as the gas inflow. After moving, the gas flow rate between the silencer plates is reduced, the channel becomes longer, the gas resistance loss is reduced, and the noise reduction effect is reduced.

[0029] When the noise reduction requirement is not high, the mobile noise reduction unit can be moved out according to the situation. Of course, the more it is moved out, the smaller the noise reduction and ventilation resistance loss. It can be moved to a suitable location according to the external noise reduction requirements. At night, when the facilities in the area that need noise reduction are running at full load and have higher noise emission limits, the mobile noise reduction unit will be moved back.

[0030] The operation control method includes: numbering the air inlets and outlets generating noise, setting up monitoring points, the monitoring points being the target monitoring points for the plant boundary environment and / or the target monitoring points for acoustic environment protection, the locations of the monitoring points can be set according to actual needs, the target monitoring points for the plant boundary environment can be any number, but at least one is set up, and the target monitoring points for acoustic environment protection can also be any number, or 0.

[0031] According to the set monitoring point target value L mb (L mb It can be set as needed, not necessarily the standard limit, and can reserve a margin) to find the maximum noise value L in the monitoring point max Or minimum noise value L min , adjust the mobile silencer unit in the air inlet and outlet closest to the monitoring point, and move the mobile silencer unit from the energy-saving position to the noise reduction position or from the noise reduction position to the energy-saving position until the noise value of all monitoring points is no greater than the monitoring point target value L mb , and the mobile silencer unit is closest to the energy-saving position.

[0032] The control objective of the operation control method is to make as many mobile silencer units as possible operate in the energy-saving position or close to the energy-saving position under specific operating conditions while meeting certain noise setting values ​​of the set monitoring points.

[0033] The mobile silencer unit has two extreme operation modes, one is the "noise reduction position mode", in which the noise reduction performance is the best and the energy saving effect is the worst, and the other is the "energy saving position mode", in which the energy saving effect is the best and the noise reduction performance is the worst, and there is a certain adjustable range between the two modes. According to the moving distance of the mobile silencer unit, the noise reduction position and the energy saving position are divided into energy saving 0% position (i.e. noise reduction position), energy saving 10% position, energy saving 20% ​​position, energy saving 30% position, energy saving 40% position, energy saving 50% position, energy saving 60% position, energy saving 70% position, energy saving 80% position, energy saving 90% position and energy saving 100% position (i.e. energy saving position).

[0034] Number the air inlets and outlets that generate noise. A certain project has 8 mechanical ventilation cooling towers, including 1#, 2#, ... 8# ventilation cooling towers. Each mechanical ventilation cooling tower has two air inlets, with 1# to 8# corresponding to the center points of the air inlets, 12#, 11#, ... 81#, 82#.

[0035] At least three environmental monitoring points at the factory boundary are set within 0.5 to 1.5 meters outside the factory boundary wall, and at least one acoustic environment protection monitoring point is set. In this project, four environmental monitoring points at the factory boundary are set 1 meter outside the factory boundary wall, and one acoustic environment protection monitoring point is set, namely, monitoring point A, monitoring point B, and monitoring point E. The operation of the movable energy-saving inlet and outlet air silencing system is guided by the measured noise values ​​at the set monitoring points.

[0036] During the night from 22:00 to 6:00 the next day, the target value L of the monitoring point is set to mb Set to 45 dB, and set the monitoring point target value L mb At night, which is the full load period, the mobile silencer units at the air inlet and outlet are in the noise reduction position. During the day, according to the target value L mb Control and regulate the mobile silencer unit.

[0037] Due to seasonal differences, in winter, due to changes in meteorological conditions such as lower temperatures, only part of the mechanical ventilation cooling tower needs to be operated even when the system is running at full load. Due to the volatility of the overall production load, the number of cooling towers in operation can be reduced under non-full load conditions or special conditions (such as heating conditions in thermal power plants, where steam can be heated externally and all cooling is not required, and the number of cooling towers in operation can be reduced). Under such conditions, non-operating towers have no noise contribution to the outside world, and operating cooling towers can appropriately reduce the noise reduction requirements for operation (operating in energy-saving conditions), but the noise control at the factory boundary must meet the standards. Under such conditions, the inlet and outlet silencers can also be adjusted separately during the day and night.

[0038] The operation control method includes an initial adjustment stage and a fine adjustment stage.

[0039] Initial adjustment stage: first move all the mobile silencer units in the air inlet and outlet to the energy-saving position, and obtain the noise value of each monitoring point after running for t: L A1 , L B1 , L C1 , L D1 , L E1 , find the maximum noise value L max1 and its corresponding monitoring point X1. The distances between the monitoring point X1 and each air outlet are numbered dX111#, dX112#, etc. Find the air inlet and outlet closest to the monitoring point, and move the mobile silencer unit in the air inlet and outlet to the noise reduction position.

[0040] After running for time t, obtain the noise value of each monitoring point: L A2 , L B2 , L C2 , L D2 , L E2 , judge L A2 , L B2 , L C2 , L D2 and L E2 Are they all less than L? mb If both are less than the target value L of the monitoring point mb The initial adjustment is completed and the fine adjustment stage begins.

[0041] If at least one item is not less than the target value L of the monitoring point mb , then find the maximum noise value L max2 and its corresponding monitoring point X2. The distances between the monitoring point X2 and each air outlet are numbered dX211#, dX212#, etc. Find the air inlet and outlet closest to the monitoring point, and move the mobile silencer unit in the air inlet and outlet to the noise reduction position.

[0042] After running for time t, obtain the noise value of each monitoring point: L A3 , L B3 , L C3 , L D3 , L E3 , judge L A3 , L B3 , L C3 , L D3 and L E3 Are they all less than L? mb If both are less than the target value L of the monitoring point mb The initial adjustment is completed and the fine adjustment stage begins.

[0043] If at least one item is not less than the target value L of the monitoring point mb , then find the maximum noise value L max3 and its corresponding monitoring point X3. The distances between the monitoring point X3 and each air outlet are numbered dX311#, dX312#, etc. Find the air inlet and outlet closest to the monitoring point, and move the mobile silencer unit in the air inlet and outlet to the noise reduction position.

[0044] Repeat the above steps until all monitoring points are less than the monitoring point target value L mb .

[0045] Fine-tuning stage: After running for time t, obtain the noise value of each monitoring point: L jA1 , L jB1 , L jC1 , L jD1 , L jE1 , find the minimum noise value L min1 and its corresponding monitoring point X j1 , monitoring point X j1 The distances from each air outlet are numbered dXj111#, dXj112#, etc. Find the air inlet and outlet closest to the monitoring point, and move the mobile silencer unit in the air inlet and outlet from the noise reduction position to the energy-saving position by 10%. The adjustment step is adjustable, and this project uses a step of 10%.

[0046] After running for time t, obtain the noise value of each monitoring point: L jA2 , L jB2 , L jC2, L jD2 , L jE2 , if at least one item is not less than the target value L of the monitoring point mb The fine adjustment is completed, and the state of the mobile silencer unit in the air inlet and outlet in the previous step is the target state. Each mobile silencer unit in the air inlet and outlet operates under the target state, and the operating state of the noise reduction facility (cooling tower) and the corresponding mobile silencer unit state are archived.

[0047] If both are less than the target value L of the monitoring point mb , then find the minimum noise value L min2 and its corresponding monitoring point X j2 , monitoring point X j2 The distances from each noise reduction air outlet (all those that can be adjusted to energy-saving mode are considered) are numbered dXj211#, dXj212#, etc. Find the air outlet at the nearest distance, and adjust the mobile silencer unit in the air inlet and outlet from the noise reduction position to the energy-saving position by 10%.

[0048] Repeat the above steps until the noise value of at least one monitoring point is not less than the monitoring point target value L mb The fine tuning is completed, and the state of the mobile silencer unit in the air inlet and outlet in the previous step is the target state.

[0049] You can also skip the initial adjustment stage and move all the mobile silencer units in the air inlets and outlets to the noise reduction position before the fine adjustment stage.

[0050] The status of the mobile silencer units at the air inlets and outlets corresponding to different noise reduction requirements is archived in the storage module of the central control computer. When the required status of the silencer system is consistent with the archived status, the central control computer directly calls out the archived status and adjusts the mobile silencer unit to the archived status (perform test archives for each possible working condition to facilitate later adjustments). After the above working conditions are running smoothly, monitoring points A, B, etc. can be removed in extreme cases. All operating states have corresponding energy-saving operating mode states corresponding to the operation, and they can all be called to operate. That is, the operation plan can be called in real time based on the actual operation of the noise reduction device in the later stage.

[0051] The aforementioned basic examples and their further selected examples can be freely combined to form multiple embodiments, all of which are embodiments that can be adopted and claimed for protection in this application. In the scheme of this application, each selected example can be arbitrarily combined with any other basic examples and selected examples.

[0052] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A method for controlling the operation of a mobile energy-saving air inlet and outlet silencing system, the silencing system comprising an air inlet and outlet (1), characterized in that: The air inlet and outlet (1) is provided with a plurality of fixed silencer units (2) and mobile silencer units (3); the fixed silencer units (2) are fixed in the air inlet and outlet (1); the mobile silencer units (3) move forward and backward along a trajectory in the wind in the air inlet and outlet (1) through a guide rail assembly (4); the trajectory of the mobile silencer units (3) includes noise reduction positions between the fixed silencer units (2) and energy-saving positions in front of and / or behind the fixed silencer units (2); The operation control method comprises: numbering air inlets and outlets (1) that generate noise; Set up monitoring points, which are the target monitoring points for factory boundary environment and / or acoustic environment protection; according to the set monitoring point target value L mb , find the maximum noise value L in the monitoring point max Or minimum noise value L min , adjust the mobile silencer unit (3) in the air inlet and outlet (1) closest to the monitoring point, and adjust and move the mobile silencer unit (3) from the energy-saving position to the noise reduction position or from the noise reduction position to the energy-saving position until the noise value of all monitoring points is no greater than the monitoring point target value L mb , and the mobile silencer unit (3) is closest to the energy-saving position.

2. The operation control method of the movable energy-saving inlet and outlet air silencing system according to claim 1 is characterized in that: According to the moving distance of the mobile silencer unit (3), the noise reduction position and the energy saving position are divided into energy saving 0%, energy saving 10%, energy saving 20%, energy saving 30%, energy saving 40%, energy saving 50%, energy saving 60%, energy saving 70%, energy saving 80%, energy saving 90% and energy saving 100%.

3. The operation control method of the movable energy-saving inlet and outlet air silencing system according to claim 1 is characterized in that: At least three factory boundary environmental target monitoring points and at least one acoustic environment protection target monitoring point shall be arranged within 0.5 to 1.5 m outside the factory boundary wall.

4. The operation control method of the movable energy-saving inlet and outlet air silencing system according to claim 1 is characterized in that: During the night from 22:00 to 6:00 the next day, the target value L of the monitoring point is set to mb Set to 45 dB, and set the monitoring point target value L mb Set to 55 dB.

5. The operation control method of the movable energy-saving inlet and outlet air silencing system according to claim 1 or 4 is characterized in that: At night, the mobile silencer units (3) at the air inlet and outlet (1) are in the noise reduction position. During the day, according to the target value L mb The mobile silencer unit (3) is regulated.

6. The operation control method of the movable energy-saving inlet and outlet air silencing system according to claim 1 is characterized in that: The operation control method comprises an initial adjustment stage: firstly, the mobile silencer units (3) in all air inlets and outlets (1) are moved to the energy-saving position, and after the operation time t, the noise value of each monitoring point is obtained, and the maximum noise value and its corresponding monitoring point are found, and the air inlet and outlet (1) closest to the monitoring point is found, and the mobile silencer units (3) in the air inlet and outlet (1) are moved to the noise reduction position, and after the operation time t, the noise value of each monitoring point is obtained, and if all the noise values ​​are less than the target value L of the monitoring point, the noise value of each monitoring point is obtained. mb The initial adjustment is completed and the fine adjustment phase begins. If at least one item is not less than the target value L of the monitoring point mb Repeat the above steps until all monitoring points are less than the monitoring point target value L mb .

7. The operation control method of the movable energy-saving inlet and outlet air silencing system according to claim 1 or 6, characterized in that: The operation control method comprises a fine adjustment stage: after the operation time t, the noise value of each monitoring point is obtained, the minimum noise value and its corresponding monitoring point are found, the air inlet and outlet (1) closest to the monitoring point is found, and the mobile silencer unit (3) in the air inlet and outlet (1) is adjusted and moved from the noise reduction position to the energy saving position, and the noise value of each monitoring point is obtained after the operation time t is continued. If at least one item is not less than the target value L of the monitoring point, mb The fine adjustment is completed, and the state of the mobile silencer unit (3) in the air inlet and outlet (1) in the previous step is the target state. If both are less than the monitoring point target value L mb Repeat the above steps until at least one item is not less than the target value L of the monitoring point. mb .

8. The operation control method of the movable energy-saving inlet and outlet air silencing system according to claim 7 is characterized in that: Skipping the initial adjustment stage, before the fine adjustment stage, first move the mobile silencer units (3) in all air inlets and outlets (1) to the noise reduction position.

9. The operation control method of the movable energy-saving inlet and outlet air silencing system according to claim 1 is characterized in that: The status of the mobile silencer unit (3) at the air inlet and outlet (1) corresponding to different noise reduction requirements is archived in the storage module of the central control computer. When the required status of the silencer system is consistent with the archived status, the central control computer directly calls out the archived status and adjusts the mobile silencer unit (3) to the archived status.

10. The operation control method of the movable energy-saving air inlet and outlet silencer system according to claim 1, characterized in that: Due to seasonal differences, in winter, due to changes in meteorological conditions, noise reduction facilities only need to be partially operated, or due to the volatility of the overall production load, the overall number of operating noise reduction facilities is reduced under non-full load conditions or special operating conditions. Under such conditions, non-operating noise reduction facilities have no noise contribution to the outside world, and operating noise reduction facilities have reduced noise reduction requirements, but the factory boundary noise control must meet the standards; at the same time, under such conditions, the inlet and outlet silencers are adjusted separately during the day and night.

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