CN204704992U - Duct static pressure control device - Google Patents
Duct static pressure control device Download PDFInfo
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- CN204704992U CN204704992U CN201520360000.2U CN201520360000U CN204704992U CN 204704992 U CN204704992 U CN 204704992U CN 201520360000 U CN201520360000 U CN 201520360000U CN 204704992 U CN204704992 U CN 204704992U
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- static pressure
- exhaust blower
- blast pipe
- electrically connected
- controller
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Abstract
The utility model discloses duct static pressure control device, comprise exhaust blower, blast pipe, described blast pipe is connected with described exhaust blower, described blast pipe is divided into front section and hindfoot portion, in described blast pipe hindfoot portion, duct static pressure sensor is installed, described duct static pressure sensor and controller are electrically connected, and described controller and frequency converter are electrically connected, and described frequency converter and described exhaust blower are electrically connected.The utility model, by being provided with duct static pressure device in the intake stack of exhaust blower, being regulated the rotating speed of exhaust blower, maintains the differential static pressure of pipeline, thus reach the object meeting actual needs air quantity, also greatly reduce noise simultaneously by controller and frequency converter.
Description
Technical field
The utility model relates to Static prestressed-pile device, is specifically related to duct static pressure control device.
Background technology
Laboratory ventilation system is an indispensable part in lab design, and suck poisonous and hazardous gas to make the staff in laboratory avoid, laboratory should be equipped with good ventilation equipment.At present, way conventional in laboratory is, by installing a ventilation system, the toxic and harmful in laboratory is concentrated the outer row of extraction, although, the effect of current ventilation system is all more satisfactory, but simultaneously also occur some problems, such as in the process of ventilation system in air draft, the rotating speed due to exhaust blower is all fixing, the exhaust air rate of such exhaust blower likely there will be higher or lower than the exhaust air rate described in actual conditions, thus can affect exhaust effect widely; Meanwhile, exhaust duct also can produce larger noise, goes down seriously to affect the physical and mental health of staff and the accuracy of experimental data in laboratory for a long time.
Application number is patent discloses " a kind of static pressure wind speed control method " of CN201310290441.5, this technical scheme effectively can avoid shuttle belt by carrying out correction in conjunction with vibration performance point and vibration to rotation speed of fan, thus avoid the generation of resonance, effective suppression noise, to reach the effect of static pressure, but this technical scheme is only the noise adjustment being applicable to air-conditioning, can not solve the technical problem that ventilation shaft produces a large amount of noise.
Summary of the invention
The utility model object is to provide a kind of duct static pressure control device, with the exhaust air rate solving existing ventilation system can not change according to the changes in demand of reality and produce in ventilation shaft a large amount of noise technical problem.
In order to achieve the above object, the utility model adopts following technical scheme:
Duct static pressure control device, comprise exhaust blower, blast pipe, described blast pipe is connected with described exhaust blower, described blast pipe is divided into front section and hindfoot portion, in described blast pipe hindfoot portion, duct static pressure sensor is installed, described duct static pressure sensor and controller are electrically connected, and described controller and frequency converter are electrically connected, and described frequency converter and described exhaust blower are electrically connected.Duct static pressure sensor is installed in blast pipe hindfoot portion, for the pressure differential inside and outside testing pipes, and the consequential signal detected transfers in controller, through the internal arithmetic of controller, by the Signal transmissions of operation result in frequency converter, the frequency of exhaust blower is changed by frequency converter, total exhaust air rate is increased or reduces, thus make the pressure differential inside and outside pipeline remain in certain scope, thus reach the object of satisfied actual Air Quantity Required, also greatly reduce the noise that blast pipe produces simultaneously.
One as the utility model duct static pressure control device is improved, in described blast pipe front section, electric closed valve is installed, described electric closed valve and described controller are electrically connected, described controller and frequency converter are electrically connected, described frequency converter and described exhaust blower are electrically connected, thus make electric closed valve and exhaust blower be corresponding chain promoter, effectively prevent reverse flowing of air flows.This electric closed valve is a kind of electronic one-way cock, oppresses, can not open because of back draught effect without during electricity by brute spring, the effective seal ensureing additional space.
Another kind as the utility model duct static pressure control device improves, described controller is PLC, described PLC is provided with display screen, can pressure difference value inside and outside display pipes on display screen, to adjust the air draft wind speed in pipeline in time.
From the above, the utility model compared with prior art, has following beneficial effect:
The utility model, by being provided with duct static pressure device in the intake stack of exhaust blower, being regulated the rotating speed of exhaust blower, maintains the differential static pressure of pipeline, thus reach the object meeting actual needs air quantity, also greatly reduce noise simultaneously by controller and frequency converter.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model duct static pressure control device;
In figure: 1 exhaust blower, 2 blast pipes, 3 duct static pressure sensors, 4 controllers, 5 frequency converters, 6 electric closed valves, 20 blast pipe front section, 21 blast pipe hindfoot portion, 41 display screens.
Detailed description of the invention
Accompanying drawing, only for exemplary illustration, can not be interpreted as the restriction to this patent.
To those skilled in the art, in accompanying drawing, some known features and explanation thereof may be omitted is understandable.
Below in conjunction with the Figure of description in the utility model, be clearly and completely described the technical scheme in utility model, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, for the structural representation of the duct static pressure control device of the utility model preferred embodiment, comprise exhaust blower 1, blast pipe 2, described blast pipe 2 is connected with described exhaust blower 1, and wherein, this blast pipe 2 is divided into front section 20 and hindfoot portion 21, in described blast pipe hindfoot portion 21, duct static pressure sensor 3 is installed, described duct static pressure sensor 3 is electrically connected with controller 4, and this controller 4 is electrically connected with frequency converter 5, and this frequency converter 5 is electrically connected with described exhaust blower 1; Wherein, in described blast pipe front section 20, electric closed valve 6 is installed, described electric closed valve 6 is electrically connected with described controller 4, because controller 4 and frequency converter 5 are electrically connected, frequency converter 5 and exhaust blower 1 are also be electrically connected, thus make electric closed valve 6 be corresponding chain promoter with exhaust blower 1, effectively prevent reverse flowing of air flows.Wherein, more specifically, this controller 4 is PLC, and this PLC is provided with display screen 41, can pressure difference value inside and outside display pipes on display screen, to adjust the air draft wind speed in pipeline in time.
In sum, be the utility model embodiment content, and obvious embodiment of the present utility model is not limited in this, it according to different application environment, can utilize functional realiey corresponding demand of the present utility model.
Claims (2)
1. duct static pressure control device, comprise exhaust blower, blast pipe, described blast pipe is connected with described exhaust blower, described blast pipe is divided into front section and hindfoot portion, it is characterized in that, in described blast pipe hindfoot portion, be provided with duct static pressure sensor, described duct static pressure sensor and controller are electrically connected, described controller and frequency converter are electrically connected, and described frequency converter and described exhaust blower are electrically connected; In described blast pipe front section, be provided with electric closed valve, described electric closed valve and described controller are electrically connected, and described controller and frequency converter are electrically connected, and described frequency converter and described exhaust blower are electrically connected.
2. duct static pressure control device as claimed in claim 1, it is characterized in that, described controller is PLC, and described PLC is provided with display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520360000.2U CN204704992U (en) | 2015-05-29 | 2015-05-29 | Duct static pressure control device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520360000.2U CN204704992U (en) | 2015-05-29 | 2015-05-29 | Duct static pressure control device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204704992U true CN204704992U (en) | 2015-10-14 |
Family
ID=54284603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520360000.2U Active CN204704992U (en) | 2015-05-29 | 2015-05-29 | Duct static pressure control device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204704992U (en) |
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2015
- 2015-05-29 CN CN201520360000.2U patent/CN204704992U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510000, room 94, No. two, 603 street, Haizhuqu District Industrial Avenue South, Guangdong, Guangzhou Patentee after: GUANGZHOU AOQI LAB TECHNOLOGY CO., LTD. Address before: 510000, room 94, No. two, 603 street, Haizhuqu District Industrial Avenue South, Guangdong, Guangzhou Patentee before: GUANGZHOU AOQI LAB DESIGN CO., LTD. |
|
| C56 | Change in the name or address of the patentee | ||
| CP02 | Change in the address of a patent holder |
Address after: High tech Industrial Development Zone, Guangzhou City, Guangdong province 510000 Science City skim Springs Road No. 3, Guangzhou international business incubator A District No. A408 room Patentee after: GUANGZHOU AOQI LAB TECHNOLOGY CO., LTD. Address before: 510000, room 94, No. two, 603 street, Haizhuqu District Industrial Avenue South, Guangdong, Guangzhou Patentee before: GUANGZHOU AOQI LAB TECHNOLOGY CO., LTD. |