CN219178877U - Performance detection device of vehicle-mounted positive pressure type smoke exhaust fan - Google Patents
Performance detection device of vehicle-mounted positive pressure type smoke exhaust fan Download PDFInfo
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- CN219178877U CN219178877U CN202222717022.2U CN202222717022U CN219178877U CN 219178877 U CN219178877 U CN 219178877U CN 202222717022 U CN202222717022 U CN 202222717022U CN 219178877 U CN219178877 U CN 219178877U
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Abstract
The utility model discloses a vehicle-mounted positive pressure type smoke exhaust fan performance detection device; comprising the following steps: the system comprises a lifting table, an air pipe assembly, a sensor assembly, a data acquisition system and a control system; the air pipe assembly is arranged on the lifting table, and the height of the air pipe assembly is adjusted through the lifting table; the sensor component is arranged on the air pipe component; the sensor assembly is connected with the data acquisition system; the acquisition system is connected with the control system. According to the scheme, the smoke exhaust fan is matched with the performance detection device, so that the smoke exhaust fan of the fire engine in a working state can be detected in an outdoor or open environment, and the reliability of the smoke exhaust fan is greatly improved.
Description
Technical Field
The utility model relates to the technical field of detection devices, in particular to a vehicle-mounted positive pressure type smoke exhaust fan performance detection device.
Background
At present, the effective detection means of the air quantity and the air pressure of the smoke exhaust fan of the fire engine mainly uses the detection equipment of the general ventilator to carry out parameter detection, and cannot effectively optimize the conditions of large air quantity, movable lifting, complex driving power source and the like of the smoke exhaust fan of the fire engine.
The small-sized equipment has the problems of small detection air quantity, small data sampling point, insufficient acquired environmental physical quantity and the like, and the problems of insufficient measuring range for measuring the air quantity of a fire engine smoke extractor or low detection data precision and repeatability are caused.
Large-scale equipment often fixed mounting is in the laboratory, and the fire engine can't enter into in the test site, can only be through disassembling the back installation with the fan on the test bench, but often face two problems: firstly, the problem of a power source for driving a fan; secondly, the test result and the actual use condition are distorted due to the fact that the vehicle is separated from the test result; namely, the operation in the detection process is inconvenient and has deviation from the effect in actual use.
Through the technical problem, the technical problems of high detection difficulty and low accuracy in the existing performance detection of the vehicle-mounted positive pressure type smoke exhaust fan can be achieved.
Therefore, how to improve the effectiveness of the performance detection means of the vehicle-mounted positive pressure type smoke exhaust fan and the accuracy of parameters are problems to be solved in the field.
Disclosure of Invention
Aiming at the technical problem that the accuracy is low in the performance detection of the existing vehicle-mounted positive pressure type smoke exhaust fan, the aim of the scheme is to provide the vehicle-mounted positive pressure type smoke exhaust fan performance detection device, which is matched with the smoke exhaust fan to be provided with a performance detection device, so that the fire engine smoke exhaust machine in the working state can be detected in the outdoor or open environment, the reliability of the smoke exhaust fan is greatly improved, and the problems in the prior art are well solved.
In order to achieve the aim, the utility model provides a vehicle-mounted positive pressure type smoke exhaust fan performance detection device; comprising the following steps: the system comprises a lifting table, an air pipe assembly, a sensor assembly, a data acquisition system and a control system; the air pipe assembly is arranged on the lifting table, and the height of the air pipe assembly is adjusted through the lifting table; the sensor component is arranged on the air pipe component; the sensor assembly is connected with the data acquisition system; the acquisition system is connected with the control system.
Further, the lifting platform comprises a bracket and a lifting arm; the bracket is connected with the air pipe assembly in a matching way; the lifting arm drives the connecting support, and the height of the support can be adjusted.
Further, the air duct assembly comprises a plurality of air ducts and a rectifier; the air pipes are detachably connected sequentially through flanges, and the interiors of the air pipes are sequentially communicated to form an air channel; the rectifier is arranged in the air duct and integrates irregularly flowing gas in the air duct.
Further, the rectifier is a grid-shaped honeycomb rectifier formed by welding two groups of slotted steel plates with the same section after opposite insertion.
Further, the sensor assembly comprises a pressure measuring assembly, a temperature measuring assembly and a humidity measuring assembly and is arranged in the air pipe.
Further, the pressure measuring assembly comprises a plurality of pitot static pressure pipe assemblies which are symmetrically distributed around the air pipe and are inserted into the air pipe; each group of pitot static pressure pipe assembly comprises a base and 4 pitot static pressure pipes; the 4 pitot static pressure pipes are arranged on the base and are arranged on the air pipe through the base.
Further, the 4 pitot static tubes 4 are sequentially arranged along the axial direction; and the heights of the 4 pitot static tubes gradually increase along a certain length.
Further, the base is divided into a first part and a second part;
the inside of the first part of the base is correspondingly provided with 4 threaded bases for installing the pitot static tube, and the inner diameter of the threaded bases is matched with the outer diameter of a fixed thread of the pitot static tube;
the base is provided with screw holes, and after the pressure measuring end of the pitot static tube is inserted into the air tube through the round holes in the air tube, the pitot static tube assembly is arranged on the air tube through screw hole matched bolts on the second part.
Further, the probe of the temperature measuring piece is arranged in the air duct to measure the temperature in the air duct.
Further, a throttling device is arranged at the air outlet of the air duct, and comprises an adjusting screw rod, a linear guide column and a wind shield;
the circumference of the wind shield is uniformly provided with linear guide posts and extends to be connected with an air pipe of an air outlet of the air duct; the throttling device is provided with an adjusting screw rod, and wind force is adjusted by adjusting the distance between the wind shield and the air pipe through the adjusting screw rod.
According to the vehicle-mounted positive pressure type smoke exhaust fan performance detection device, the smoke exhaust fan is matched with the performance detection device, the fire engine smoke exhaust machine in the working state can be detected in the outdoor or open environment, and the effectiveness of detecting the performance parameters of the smoke exhaust fan and the accuracy of the parameters are greatly improved.
Drawings
The utility model is further described below with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of the overall structure of the performance detection device of the smoke exhaust fan;
FIG. 2 is a cross-sectional view of the whole structure of the performance detection device of the smoke exhaust fan;
FIG. 3 is a schematic diagram of a rectifier in the performance detection device of the smoke exhaust fan;
fig. 4 is a schematic diagram of the rectifier structure in the performance detection device of the smoke exhaust fan;
FIG. 5 is a schematic diagram illustrating the installation of a pressure measurement device in the present exhaust fan performance detection apparatus;
fig. 6 is a schematic structural diagram of a pressure measuring device in the performance detecting device of the smoke exhaust fan;
fig. 7 is a schematic structural diagram of a throttle device in the performance detection device of the smoke exhaust fan.
The following is a description of the components in the drawings:
100. air duct assembly 110, first air duct 120, second air duct 130, third air duct 140, fourth air duct 150, fifth air duct 160, rectifier 200, sensor assembly 210, pitot static duct 220, base 221, externally threaded mounting 222, sealing threads 300, lifting platform 310, lifting arm 320, lifting platform 400, throttle 410, wind deflector 420, linear guide post 430, and adjustment screw.
Detailed Description
The utility model is further described with reference to the following detailed drawings in order to make the technical means, the creation characteristics, the achievement of the purpose and the effect of the implementation of the utility model easy to understand.
The technical problem that the reliability is low exists in the existing smoke exhaust fan is solved, the technical problem is solved, the vehicle-mounted positive pressure smoke exhaust fan performance detection device is provided, the smoke exhaust fan is matched with the performance detection device, the fire engine smoke exhaust machine in an outdoor or open environment can be detected on line, and the reliability of the smoke exhaust fan is greatly improved.
Referring to fig. 1-2, the vehicle-mounted positive pressure type smoke exhaust fan performance detection device provided by the scheme comprises a lifting device 300, an air pipe assembly 100, a sensor assembly 200, a data acquisition system and a control system.
Wherein the ductwork assembly 100 includes a number of ductwork and a rectifier 160.
Five air pipes, namely a first air pipe 110, a second air pipe 120, a third air pipe 130, a fourth air pipe 140 and a fifth air pipe 150 are adopted in the scheme.
The first air duct 110, the second air duct 120, the third air duct 130, the fourth air duct 140 and the fifth air duct 150 are detachably connected in sequence through flanges, and the interiors of the first air duct 110, the second air duct 120, the third air duct 130, the fourth air duct 140 and the fifth air duct 150 are sequentially communicated to form an air duct.
The air duct is made of stainless steel, is resistant to corrosion and high in hardness, and can ensure service life and reliability in working.
Meanwhile, the shape of the air duct is not limited, and examples include, but are not limited to, a circular air duct or a rectangular air duct, and the specific examples can be according to practical situations.
In addition, the number of the air pipes is not limited, and the specific number can be used according to actual conditions.
The rectifier 160 is disposed near the inside of the third duct 130, and the rectifier 160 is required to overcome the duct resistance, so that an auxiliary booster fan is required, and the rectifier 160 may be installed at either side of the auxiliary ventilator.
The rectifier 160 is used to change the irregularly flowing gas flow into a regularly flowing gas flow; referring to fig. 3-4, the rectifier 160 provided in this embodiment is a honeycomb rectifier, which is a grid-shaped rectifier formed by welding two sets of grooved stainless steel plates with the same cross section after being inserted.
It should be noted that, the rectifier 160 is not limited to the use of a honeycomb rectifier, but the present embodiment preferably uses a honeycomb rectifier, and the honeycomb rectifier has a better rectifying effect.
The sensor assembly 200 includes a pressure measurement assembly, a temperature measurement assembly, and a humidity measurement assembly.
The pressure measuring assembly is used for detecting the pressure in the air pipe and is connected with the control system, and the measured pressure data in the air pipe are transmitted to the control system for analysis and integration.
The pressure measuring device includes a plurality of pitot-static tube assemblies, see fig. 5, mounted on the fourth air duct 140 for measuring the pressure in the air duct.
Referring to FIG. 6, each set of pitot-static tube assemblies includes 4 pitot-static tubes 210.
The 4 pitot static tubes 210 are sequentially arranged along the axial direction; and the height of the 4 pitot-static tubes 210 is gradually increased along a certain length.
In order to distribute the air inlets of the pitot-static tubes 210 on a plane as much as possible, 4 pitot-static tubes 210 in the same group should be as close as possible.
Meanwhile, the pitot static tube 210 is provided with an external thread fixing base 220 and a sealing fixing thread 230. The first part of the external screw thread fixing base 220 is matched with the internal screw thread base on the air pipe to be screwed up and then fixed with the air duct, and the sealing fixing screw thread 230 is screwed up with the first part of the external screw thread fixing base after the insertion depth of the pitot tube is adjusted to be complete, so that the fixation of the pitot tube is completed.
Second, the static pressure joints of each pitot static tube 210 can be arranged separately, and can be read separately; meanwhile, the static pressure joints of each pitot static pressure pipe 210 are connected together through a set total joint to carry out single average reading; the structure of the readings is not limited and may be determined according to practical situations.
In order to ensure the accuracy of the measurement of the internal pressure of the air duct, at least 4 measuring points are selected in the air duct, the 4 measuring points are axially symmetrically arranged on the air duct and are provided with a pitot static pressure pipe assembly, and the distance from the air duct wall is about 1/8 of the diameter of the air duct.
The temperature measuring part is a temperature sensor, and a probe of the temperature sensor is placed in the air duct to measure the temperature in the air duct.
The humidity measuring part is a humidity sensor, and a probe of the humidity sensor is placed in the air duct to measure the temperature in the air duct.
The temperature measuring piece is connected with the data acquisition system, and detected temperature data are transmitted to the control system for data analysis and integration.
The humidity measuring piece is connected with the data acquisition system, and detected humidity data are transmitted to the control system for data analysis and integration.
The whole air outlet position of the air duct is provided with a throttling device 400, see fig. 7, wherein the throttling device comprises an adjusting screw 430, a linear guide pillar 420 and a wind shield 410.
The straight guide posts 420 are uniformly distributed on the circumference of the wind guard 410 and extend to be connected with the fifth air duct 150, and the straight guide posts 420 can realize axial movement of the throttle device 400 along the air duct.
An adjusting screw 430 is provided on the wind deflector 410, and the wind force is adjusted by adjusting the distance between the wind deflector 410 and the fifth wind pipe 150 through the adjusting screw 430.
Referring to fig. 1, the lifting platform 300 is an installation body of the air duct assembly 100 and the sensor assembly 200, and can seamlessly interface the detection device with the detected smoke exhaust fan and keep the smoke exhaust fan in an actual use state.
The lift table 300 includes a lift platform 320 and a lift arm 310.
The bracket 320 is used for supporting the air duct assembly 100 and the sensor assembly 200; the lifting arm 310 drives the connection bracket 320, and the lifting arm 310 can be lifted and adjusted in angle.
The lifting arm 310 can lift and angle the support 320, so that the air duct assembly 100 and the sensor assembly 200 mounted on the support 320 can be adjusted in height and angle to match with the smoke exhaust fan of the fire engine, and the smoke exhaust fan can be detected.
Finally, the sensor assembly 200 and control system are powered by a diversified power supply device.
The diversification means that 220/380V alternating current, 24V vehicle-mounted direct current, built-in power supply and other equipment can be used for supplying power, the use is convenient, and the requirements on the field are low;
the vehicle-mounted positive pressure type smoke exhaust fan performance detection device formed by the scheme has the following advantages:
the modularized air duct assembly can be conveniently assembled and disassembled, transported and assembled on a test site;
the combined lifting platform can realize seamless butt joint between the detection air duct and the detected smoke extractor and keep the smoke extractor in an actual use state;
the diversified power supply scheme can use 220/380V alternating current, 24V vehicle-mounted direct current, built-in power supply and other equipment to supply power, is convenient to use and has low requirements on sites;
the foregoing has shown and described the basic principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made without departing from the spirit and scope of the utility model, which is defined in the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (10)
1. A vehicle-mounted positive pressure type smoke exhaust fan performance detection device; characterized by comprising the following steps: the system comprises a lifting table, an air pipe assembly, a sensor assembly, a data acquisition system and a control system; the air pipe assembly is arranged on the lifting table, and the height of the air pipe assembly is adjusted through the lifting table; the sensor component is arranged on the air pipe component; the sensor assembly is connected with the data acquisition system; the acquisition system is connected with the control system.
2. The vehicle-mounted positive pressure type smoke exhaust fan performance detection device according to claim 1, wherein the lifting platform comprises a bracket and a lifting arm; the bracket is connected with the air pipe assembly in a matching way; the lifting arm drives the connecting support, and the height of the support can be adjusted.
3. The vehicle-mounted positive pressure type smoke exhaust fan performance detection device according to claim 1, wherein the air duct assembly comprises a plurality of air ducts and a rectifier; the air pipes are detachably connected sequentially through flanges, and the interiors of the air pipes are sequentially communicated to form an air channel; the rectifier is arranged in the air duct and integrates irregularly flowing gas in the air duct.
4. The device for detecting the performance of the vehicle-mounted positive pressure type smoke exhaust fan according to claim 3, wherein the rectifier is a grid-shaped honeycomb rectifier formed by oppositely inserting and welding two groups of slotted steel plates with the same cross section.
5. The device for detecting performance of a vehicle-mounted positive pressure type smoke exhaust fan according to claim 1, wherein the sensor assembly comprises a pressure measuring assembly, a temperature measuring member and a humidity measuring member and is arranged in the air duct.
6. The device for detecting the performance of the vehicle-mounted positive pressure type smoke exhaust fan according to claim 5, wherein the pressure measuring assembly comprises a plurality of pitot static pressure pipe assemblies which are symmetrically distributed around the air pipe and are inserted into the air pipe; each group of pitot static pressure pipe assembly comprises a base and 4 pitot static pressure pipes; the 4 pitot static pressure pipes are arranged on the base and are arranged on the air pipe through the base.
7. The vehicle-mounted positive pressure type smoke exhaust fan performance detection device according to claim 6, wherein the 4 pitot static pressure pipes (4) are sequentially arranged along the axial direction; and the heights of the 4 pitot static tubes gradually increase along a certain length.
8. The device for detecting performance of a vehicle-mounted positive pressure type smoke exhaust fan according to claim 6, wherein the base is divided into a first part and a second part;
the inside of the first part of the base is correspondingly provided with 4 threaded bases for installing the pitot static tube, and the inner diameter of the threaded bases is matched with the outer diameter of a fixed thread of the pitot static tube;
the base is provided with screw holes, and after the pressure measuring end of the pitot static tube is inserted into the air tube through the round holes in the air tube, the pitot static tube assembly is arranged on the air tube through screw hole matched bolts on the second part.
9. The device for detecting performance of a vehicle-mounted positive pressure type smoke exhaust fan according to claim 5, wherein the probe of the temperature measuring member is arranged in the air duct to measure the temperature in the air duct.
10. The device for detecting the performance of the vehicle-mounted positive pressure type smoke exhaust fan according to claim 3, wherein a throttling device is arranged at an air outlet of the air duct, and the throttling device comprises an adjusting screw rod, a linear guide pillar and a wind shield;
the circumference of the wind shield is uniformly provided with linear guide posts and extends to be connected with an air pipe of an air outlet of the air duct; the throttling device is provided with an adjusting screw rod, and wind force is adjusted by adjusting the distance between the wind shield and the air pipe through the adjusting screw rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222717022.2U CN219178877U (en) | 2022-10-14 | 2022-10-14 | Performance detection device of vehicle-mounted positive pressure type smoke exhaust fan |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222717022.2U CN219178877U (en) | 2022-10-14 | 2022-10-14 | Performance detection device of vehicle-mounted positive pressure type smoke exhaust fan |
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| Publication Number | Publication Date |
|---|---|
| CN219178877U true CN219178877U (en) | 2023-06-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222717022.2U Active CN219178877U (en) | 2022-10-14 | 2022-10-14 | Performance detection device of vehicle-mounted positive pressure type smoke exhaust fan |
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| CN (1) | CN219178877U (en) |
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- 2022-10-14 CN CN202222717022.2U patent/CN219178877U/en active Active
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