CN211798493U - Fire-fighting inspection cabinet - Google Patents
Fire-fighting inspection cabinet Download PDFInfo
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- CN211798493U CN211798493U CN201922498822.8U CN201922498822U CN211798493U CN 211798493 U CN211798493 U CN 211798493U CN 201922498822 U CN201922498822 U CN 201922498822U CN 211798493 U CN211798493 U CN 211798493U
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Abstract
The utility model discloses a fire-fighting inspection cabinet, which comprises a programmable logic controller, wherein the programmable logic controller is connected with a touch screen through an RS232 interface, is connected with a fire-fighting control center through an RS485 interface, and is connected with a multifunctional terminal of a frequency converter through an output terminal of the programmable logic controller, and the multifunctional terminal is arranged in the frequency converter and has a multi-channel speed function and is connected with a fire pump and a spray pump; the frequency converter comprises a manual inspection mode and a PID inspection mode; a Programmable Logic Controller (PLC) is adopted as a control core, touch screen display/input is added to set parameters, a frequency converter is adopted as a water pump driver, low-frequency inspection is carried out, and both a fire pump and a spray pump are water pumps; the flow of the water pump is in direct proportion to the rotating speed of the water pump, the lift of the water pump is in direct proportion to the square of the rotating speed of the water pump, and the power of the water pump shaft is equal to the product of the flow and the lift, so that the power of the water pump shaft is in direct proportion to the third power of the rotating speed of the water pump, namely the power of the water pump shaft is in direct proportion to the third power of the.
Description
Technical Field
The utility model belongs to the fire-fighting equipment field relates to a fire control patrols and examines cabinet.
Background
The fire-fighting water supply equipment is an important component of a fire-fighting system, and no matter a fire-fighting linkage alarm system or other various automatic fire-fighting control equipment judges a disaster situation and gives corresponding alarm information, the ultimate fundamental purpose is to start a corresponding fire-fighting control cabinet, so that a fire-fighting water pump correspondingly controlled by the control cabinet is started.
A problem generally exists in various types of fire water supply equipment at present: when a fire disaster dangerous situation occurs in a building, a considerable number of fire-fighting water pumps cannot start the water pumps after receiving a fire-fighting linkage alarm starting signal, so that the fire-fighting opportunity is delayed, great loss is caused to the life safety of national property and people, and the main reason for the phenomenon is that the fire-fighting water pumps do not stop starting at ordinary times under the condition of no disaster dangerous situation, the fire-fighting water pumps bought by most enterprises are not made of stainless steel, and the phenomenon of rusting of pump shafts, impellers and shaft sleeves inside the fire-fighting pumps occurs under the humid environment of a pump room along with the lapse of time. Meanwhile, fire pump managers are neglected in management and are not inspected and overhauled periodically.
The fire pump is used for compensating the serious consequences that the fire fighting equipment is not used for a long time, and the national property and the life safety of people are caused by the incapability of starting due to the rusting of the fire pump and the like. The ministry of public security of the people's republic of China stipulates the requirements on the routing inspection performance of fire-fighting water supply equipment and the implementation method: the newly installed fire water supply equipment of the building has to have the functions of manual inspection and automatic inspection.
In view of the above situation, it is necessary to periodically inspect the fire pump and the control cabinet to keep the mechanical performance and the electrical control cabinet performance of the fire pump in a good state all the time.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a: provides a fire-fighting inspection cabinet, solves
The utility model adopts the technical scheme as follows:
a fire-fighting inspection cabinet comprises a programmable logic controller, wherein the programmable logic controller is connected with a touch screen through an RS232 interface and a fire-fighting control center through an RS485 interface, an output terminal of the programmable logic controller is connected with a multifunctional terminal of a frequency converter, the multifunctional terminal is arranged in the frequency converter and has a multi-channel speed function, and the multifunctional terminal is connected with a fire pump and a spray pump; the frequency converter comprises a manual inspection mode and a PID inspection mode; in the manual inspection mode, the output frequency of the frequency converter is adjusted by the upper button and the lower button to control the rotating speed of the fire pump and the spraying pump; the PID inspection mode is characterized in that a pressure transmitter is installed on a pipeline, a pressure signal is converted into a 4-20mA signal to be input into a frequency converter, the frequency converter automatically changes output frequency according to comparison between the current pressure and the pressure set inside, controls the water pump to accelerate or decelerate, and sends the accelerated or decelerated output frequency to a programmable logic controller; the programmable logic controller is characterized in that a signal input end is a touch screen, and the touch screen displays or inputs set parameters; and the programmable logic controller sends the polling information of the frequency converter to a fire control center.
In order to solve the defects of the traditional problem, a Programmable Logic Controller (PLC) is adopted, namely a touch screen is added to a control core for displaying/inputting set parameters, a frequency converter is adopted as a water pump driver for carrying out low-frequency inspection, and a fire pump and a spray pump are both water pumps; the flow of the water pump is in direct proportion to the rotating speed of the water pump, the lift of the water pump is in direct proportion to the square of the rotating speed of the water pump, and the power of the water pump shaft is equal to the product of the flow and the lift, so that the power of the water pump shaft is in direct proportion to the third power of the rotating speed of the water pump, namely the power of the water pump shaft is in direct proportion to the third power of the.
The principle shows that the power of the water pump can be changed by changing the rotating speed of the water pump.
Basic flow formula:
Q∝N H∝N2 KW＝Q*H∝N3
above Q represents flow, N represents rotational speed, H represents lift, and KW represents shaft power.
Further: the frequency converter consists of a rectifying unit, a filtering unit, an inverting unit, a braking unit, a driving unit and a detection unit micro-processing unit. The frequency converter adjusts the voltage and frequency of an output power supply by switching on and off an internal IGBT, provides the required power supply voltage according to the actual requirement of the motor, and further achieves the purposes of energy saving and speed regulation.
Further: parameters set by the touch screen comprise a polling period, and a polling mode is automatically started through a periodic clock. The low-frequency automatic inspection control of the fire fighting pump and the spray pump and the low-speed automatic transportation of the spray pump are completed, when fire fighting occurs, the programmable controller can automatically and instantly stop interrupting the inspection program after receiving a fire fighting command, the fire fighting pump is started, and the shutdown is finished.
Further: the system also comprises an input module, wherein the input module is a main auxiliary contact point of each electrical element for routing inspection return signals; the feedback signal time threshold is less than 2S.
Further: the system also comprises an output module which is used for outputting the inspection instruction.
Further: also comprises an alarm function and a communication function. The alarm function is as follows: the device has the functions of sound and light alarm and fault memory, and can memorize faults such as short circuit, phase failure, overcurrent, overvoltage, undervoltage, communication and the like, thereby being convenient for operators to overhaul and operate. Communication function: the transient parameter data remote transmission control center monitors the running state of the equipment by images.
To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:
1. the system has the functions of manual operation, automatic operation, remote control of a fire control center and the like;
2. the protection of overvoltage, undervoltage, power phase failure, short circuit, overcurrent, overload and the like is realized;
3. the acousto-optic fault alarm has a data memory function, can complete the memory of transient parameters during the fault, and the touch screen displays the fault type, thereby being convenient for maintenance and analyzing the fault reason;
4. the inspection parameters can be set according to the user condition;
5. the inspection is low-frequency inspection, the rotating speed of a motor is 300 r/m during the inspection, and a water system is not pressurized, so that the equipment is not influenced;
6. the RS485 interface is arranged in the fire-fighting control center, can communicate with the fire-fighting control center and can automatically finish remote transmission of the operation state of building automatic control;
7. when in inspection, fire fighting can stop inspection immediately and start the fire pump instantly.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:
FIG. 1 is a block diagram of a fire inspection cabinet system;
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention, i.e., the described embodiments are only some, but not all embodiments of the invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.
It is noted that relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The features and properties of the present invention will be described in further detail with reference to the following examples.
Example one
The utility model provides a fire control inspection cabinet, including programmable logic controller, programmable logic controller passes through RS232 interface connection touch-sensitive screen, passes through RS485 interface connection fire control center, and programmable logic controller's output terminal connects the multi-functional terminal of converter, sets up the multi-functional terminal in the converter to be multichannel speed function, and connect fire pump and spray pump; the frequency converter comprises a manual inspection mode and a PID inspection mode; in the manual inspection mode, the output frequency of the frequency converter is adjusted by the upper button and the lower button to control the rotating speed of the fire pump and the spraying pump; the PID inspection mode is characterized in that a pressure transmitter is installed on a pipeline, a pressure signal is converted into a 4-20mA signal to be input into a frequency converter, the frequency converter automatically changes output frequency according to comparison between the current pressure and the pressure set inside, controls the water pump to accelerate or decelerate, and sends the accelerated or decelerated output frequency to a programmable logic controller; the programmable logic controller is characterized in that a signal input end is a touch screen, and the touch screen displays or inputs set parameters; and the programmable logic controller sends the polling information of the frequency converter to a fire control center.
When in work: a Programmable Logic Controller (PLC) is adopted as a control core, touch screen display/input is added to set parameters, a frequency converter is adopted as a water pump driver, low-frequency inspection is carried out, and both a fire pump and a spray pump are water pumps; the flow of the water pump is in direct proportion to the rotating speed of the water pump, the lift of the water pump is in direct proportion to the square of the rotating speed of the water pump, and the power of the water pump shaft is equal to the product of the flow and the lift, so that the power of the water pump shaft is in direct proportion to the third power of the rotating speed of the water pump, namely the power of the water pump shaft is in direct proportion to the third power of the.
The principle shows that the power of the water pump can be changed by changing the rotating speed of the water pump.
Basic flow formula:
Q∝N H∝N2 KW＝Q*H∝N3
above Q represents flow, N represents rotational speed, H represents lift, and KW represents shaft power.
Example two
Further: the frequency converter consists of a rectifying unit, a filtering unit, an inverting unit, a braking unit, a driving unit and a detection unit micro-processing unit.
When in work: the frequency converter adjusts the voltage and frequency of an output power supply by switching on and off an internal IGBT, provides the required power supply voltage according to the actual requirement of the motor, and further achieves the purposes of energy saving and speed regulation.
EXAMPLE III
Further: parameters set by the touch screen comprise a polling period, and a polling mode is automatically started through a periodic clock.
When in work: the low-frequency automatic inspection control of the fire fighting pump and the spray pump and the low-speed automatic transportation of the spray pump are completed, when fire fighting occurs, the programmable controller can automatically and instantly stop interrupting the inspection program after receiving a fire fighting command, the fire fighting pump is started, and the shutdown is finished.
Example four
Further: the system also comprises an input module, wherein the input module is a main auxiliary contact point of each electrical element for routing inspection return signals; the feedback signal time threshold is less than 2S. The system also comprises an output module which is used for outputting the inspection instruction. Also comprises an alarm function and a communication function.
When in work: the alarm function is as follows: the device has the functions of sound and light alarm and fault memory, and can memorize faults such as short circuit, phase failure, overcurrent, overvoltage, undervoltage, communication and the like, thereby being convenient for operators to overhaul and operate. Communication function: the transient parameter data remote transmission control center monitors the running state of the equipment by images.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the scope of the present invention, and any modifications, equivalents and improvements made by those skilled in the art within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (6)
1. The utility model provides a cabinet is patrolled and examined in fire control which characterized in that: the multifunctional fire pump system comprises a programmable logic controller, wherein the programmable logic controller is connected with a touch screen through an RS232 interface and is connected with a fire control center through an RS485 interface, an output terminal of the programmable logic controller is connected with a multifunctional terminal of a frequency converter, the multifunctional terminal is arranged in the frequency converter and has a multi-channel speed function, and the multifunctional terminal is connected with a fire pump and a spray pump;
the frequency converter comprises a manual inspection mode and a PID inspection mode; in the manual inspection mode, the output frequency of the frequency converter is adjusted by the upper button and the lower button to control the rotating speed of the fire pump and the spraying pump; the PID inspection mode is characterized in that a pressure transmitter is installed on a pipeline, a pressure signal is converted into a 4-20mA signal to be input into a frequency converter, the frequency converter automatically changes output frequency according to comparison between the current pressure and the pressure set inside, controls the water pump to accelerate or decelerate, and sends the accelerated or decelerated output frequency to a programmable logic controller;
the programmable logic controller is characterized in that a signal input end is a touch screen, and the touch screen displays or inputs set parameters; and the programmable logic controller sends the polling information of the frequency converter to a fire control center.
2. A fire protection inspection cabinet according to claim 1, wherein: the frequency converter consists of a rectifying unit, a filtering unit, an inverting unit, a braking unit, a driving unit and a detection unit micro-processing unit.
3. A fire protection inspection cabinet according to claim 1, wherein: parameters set by the touch screen comprise a polling period, and a polling mode is automatically started through a periodic clock.
4. A fire protection inspection cabinet according to claim 1, wherein: the system also comprises an input module, wherein the input module is a main auxiliary contact point of each electrical element for routing inspection return signals; the feedback signal time threshold is less than 2S.
5. A fire protection inspection cabinet according to claim 1, wherein: the system also comprises an output module which is used for outputting the inspection instruction.
6. A fire protection inspection cabinet according to claim 1, wherein: also comprises an alarm function and a communication function.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498822.8U CN211798493U (en) | 2019-12-31 | 2019-12-31 | Fire-fighting inspection cabinet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922498822.8U CN211798493U (en) | 2019-12-31 | 2019-12-31 | Fire-fighting inspection cabinet |
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| CN211798493U true CN211798493U (en) | 2020-10-30 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054006A (en) * | 2019-12-31 | 2020-04-24 | 河南省中原智能电气科技有限公司 | Fire-fighting inspection cabinet |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111054006A (en) * | 2019-12-31 | 2020-04-24 | 河南省中原智能电气科技有限公司 | Fire-fighting inspection cabinet |
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