CN110703016A - Online comprehensive diagnosis integrated device for open cooling tower - Google Patents
Online comprehensive diagnosis integrated device for open cooling tower Download PDFInfo
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- CN110703016A CN110703016A CN201910935118.6A CN201910935118A CN110703016A CN 110703016 A CN110703016 A CN 110703016A CN 201910935118 A CN201910935118 A CN 201910935118A CN 110703016 A CN110703016 A CN 110703016A
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- 238000001816 cooling Methods 0.000 title claims abstract description 141
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- G—PHYSICS
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
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- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
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- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C19/00—Electric signal transmission systems
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L67/00—Network arrangements or protocols for supporting network services or applications
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- H04L67/025—Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
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- H04W—WIRELESS COMMUNICATION NETWORKS
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Abstract
The invention provides an open cooling tower on-line comprehensive diagnosis integrated device, which comprises a diagnosis controller, a power supply unit, a human-computer interface unit, a wireless transmission module and acquisition equipment, wherein the power supply unit, the human-computer interface unit, the wireless transmission module and the acquisition equipment are respectively connected with the diagnosis controller; the diagnosis controller is externally connected with a mobile terminal through the wireless transmission module; the acquisition device includes: the water temperature sensor, the dry-wet bulb temperature sensor, the flow sensor, the pulse counting module, the permanent magnet, the remote water meter, the three-phase remote intelligent electric meter and the mutual inductor have the advantages of monitoring, displaying and diagnosing faults of various working data of the open cooling tower in real time, and facilitating the working state and maintenance of workers.
Description
Technical Field
The invention belongs to the technical field of central air conditioners, and particularly relates to an open cooling tower online comprehensive diagnosis integrated device.
Background
In a central air-conditioning water system, an open cooling tower is widely applied to various buildings, the operating efficiency of the open cooling tower is directly related to the operating efficiency and energy consumption of the central air-conditioning system, due to the professional limitation of air-conditioning operation managers of various items, if the open cooling tower operated for a long time is improperly maintained or careless to maintain, the operating efficiency of the open cooling tower is seriously reduced, and even if equipment has a fault or has a fault sign, the open cooling tower cannot be timely treated, so that irreparable loss can be caused; and the working characteristics of the open cooling tower are that the open cooling tower is completely arranged outdoors, which is not convenient for the real-time patrol and overhaul of air-conditioning operation managers, so that the problem of online diagnosis of the open cooling tower must be solved, the real-time running condition and running efficiency of the open cooling tower can be monitored, and the function of remote monitoring can be realized.
Disclosure of Invention
The invention aims to provide an integrated device for online comprehensive diagnosis of an open cooling tower, which aims to solve the problems that in the existing central air-conditioning water system, the open cooling tower is inconvenient for real-time inspection and overhaul of air-conditioning operation managers due to the fact that the open cooling tower is installed outdoors in the operation process, effective supervision is lacked, and certain potential working hazards exist.
The invention provides the following technical scheme:
an open cooling tower on-line comprehensive diagnosis integrated device comprises a diagnosis controller, a power supply unit, a human-computer interface unit, a wireless transmission module and acquisition equipment, wherein the power supply unit, the human-computer interface unit, the wireless transmission module and the acquisition equipment are respectively connected with the diagnosis controller; the diagnosis controller is externally connected with a mobile terminal through the wireless transmission module; the acquisition device includes: the water temperature sensor is arranged on a water inlet pipe and a water outlet pipe of the open type cooling tower and is used for collecting the water temperatures of the water inlet pipe and the water outlet pipe and transmitting a water temperature signal to the diagnosis controller; the dry-wet bulb temperature sensor is arranged on an air inlet surface of the open cooling tower, is used for collecting the air inlet humidity and temperature of the air inlet surface and transmitting a temperature and humidity signal to the diagnosis controller; the flow sensor is arranged on a water inlet pipe of the cooling tower and used for collecting the circulating water quantity of the open cooling tower and transmitting a flow signal to the diagnosis controller; the pulse counting module and the permanent magnet are arranged on a motor and a cooling fan of the cooling tower and are used for collecting the rotating speeds of the motor and the cooling fan and transmitting rotating speed signals to the diagnosis controller; the remote water meter is arranged on a water replenishing pipe and a sewage draining pipe of the cooling tower and is used for collecting the water replenishing quantity and the sewage draining quantity of the open cooling tower and transmitting a water replenishing quantity signal and a sewage draining quantity signal to the diagnosis controller; the three-phase remote transmission type intelligent electric meter and the mutual inductor are arranged at the lower end of a circuit breaker in a control cabinet of the cooling tower, and are used for detecting the real-time power, the instantaneous current of each phase and the accumulated power consumption and electric quantity of the open cooling tower and respectively transmitting a real-time power signal, a current signal and an electric quantity signal to the diagnosis controller.
Further, the acquisition equipment and the diagnosis controller are connected and communicated through a 485 communication protocol; the wireless transmission module is connected and communicated with the diagnosis controller through a Modbus communication protocol.
Further, the diagnosis controller is a PLC controller or an MCU controller.
Furthermore, the diagnosis controller is used for displaying the dry-wet bulb temperature signal, the water supplement amount signal, the sewage discharge amount signal, the water temperature signal, the flow signal, the rotating speed signal, the power signal, the current signal and the electric quantity signal through the human-computer interface unit.
Furthermore, the diagnosis controller is used for comparing the dry-wet bulb temperature signal, the water supplement amount signal, the sewage discharge amount signal, the water temperature signal, the flow signal, the rotating speed signal, the power signal, the current signal and the electric quantity signal with preset standard values in real time, and sending comparison results to the human-computer interface unit and the mobile terminal in real time.
Further, the mobile terminal comprises a mobile phone, a notebook computer and a desktop computer.
Further, the wireless transmission module comprises a WIFI module, an NB-IOT module or a 4G module.
The invention has the beneficial effects that:
the invention provides a device for carrying out online comprehensive diagnosis on the operating condition of an open cooling tower, which is characterized in that acquisition equipment is used for acquiring various relevant parameters of the operating efficiency and the operating condition of a small and medium-sized mechanical ventilation open cooling tower, a diagnosis controller is used for diagnosing the actual operating efficiency of the open cooling tower, various relevant parameters and diagnosis results are displayed on a human-computer interface, and a user can also visit a webpage or a mobile terminal APP to check the operating condition of the equipment; the maintenance efficiency of air conditioner operation managers is improved, the running condition of the equipment is grasped in time, the specific data of fault generation reasons and fault parameters are provided for the reference of the air conditioner operation managers, and the equipment operation and maintenance are simpler and more intelligent.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a water temperature sensor installation;
FIG. 3 is a schematic diagram of a wet and dry bulb temperature sensor installation;
FIG. 4 is a schematic view of a flow sensor installation;
FIG. 5 is a schematic view of the pulse counting module and the permanent magnet assembly;
labeled as: 1. the cooling tower comprises a water temperature sensor, 2 parts of a water inlet pipe/water outlet pipe, 3 parts of a cooling tower air inlet surface, 4 parts of a dry and wet ball temperature sensor, 5 parts of a sensor fixing rod, 6 parts of an open cooling tower, 7 parts of an open cooling tower foundation, 8 parts of a flow sensor, 9 parts of a cooling tower fan motor, 10 parts of a pulse counting module, 11 parts of a permanent magnet piece and 12 parts of a cooling tower fan motor bearing.
Detailed Description
As shown in fig. 1, an open cooling tower on-line comprehensive diagnosis integrated device includes a diagnosis controller, and a power supply unit, a human-computer interface unit, a wireless transmission module and a collection device which are respectively connected with the diagnosis controller; the diagnosis controller is a PLC controller or an MCU controller; the acquisition equipment and the diagnosis controller are connected and communicated through a 485 communication protocol; the wireless transmission module is connected and communicated with the diagnosis controller through a Modbus communication protocol; the diagnosis controller is externally connected with a mobile terminal through a wireless transmission module; the diagnosis controller is used for displaying the dry-wet bulb temperature signal, the water replenishing and sewage draining quantity signal, the water temperature signal, the flow signal, the rotating speed signal, the power signal, the current signal and the electric quantity signal through the human-computer interface unit; the diagnosis controller is used for comparing the dry-wet bulb temperature signal, the water replenishing and sewage draining quantity signal, the water temperature signal, the flow signal, the rotating speed signal, the power signal, the current signal and the electric quantity signal with preset standard values in real time and sending comparison results to the human-computer interface unit and the mobile terminal in real time; the mobile terminal comprises a mobile phone, a notebook computer and a desktop computer; the wireless transmission module comprises a WIFI module, an NB-IOT module or a 4G module.
The acquisition device comprises:
as shown in fig. 2, the water temperature sensor 1 is installed on the water inlet pipe 2 and the water outlet pipe 2 of the open cooling tower, and is used for collecting the water temperatures of the water inlet pipe 2 and the water outlet pipe 2 and transmitting the water temperature signals to the diagnostic controller; the water temperature sensors 1 are respectively arranged on the water inlet pipe 2 and the water outlet pipe 2 of the open cooling tower (the installation direction is that the vertical included angle of the central lines of the cooling water inlet pipe 2 and the water outlet pipe 2 is less than or equal to +/-45 degrees), and the measuring range is as follows: laying 1 RVVP2x1.0 signal lines from the installation position of the water temperature sensor 1 to a diagnosis controller at the temperature of-30-130 ℃; an installation procedure: cleaning the outer wall of the pipe at the mounting position → marking the mounting position and drawing the position of the mounting hole with a marker pen/stone pen → cutting a mounting hole with equipment at the marking position → trimming around the mounting hole → welding the mounting base of the water temperature sensor 1 → mounting the water temperature sensor 1 sleeve → placing heat conductive silicone grease at the bottom in the mounting sleeve of the water temperature sensor 1 → mounting the probe of the water temperature sensor 1 → laying signal lines to the diagnostic controller → the side wiring of the water temperature sensor 1.
As shown in fig. 3, the wet and dry bulb temperature sensor 4 is installed on the air inlet surface 3 of the open cooling tower, and is used for collecting the air inlet humidity and temperature of the air inlet surface and transmitting the temperature and humidity signal to the diagnostic controller; a dry-wet bulb temperature sensor 4 is arranged near the air inlet direction of the cooling tower (the distance from the air inlet surface is about 1 m-1.5 m), and the range of the dry-wet bulb temperature sensor 4 is as follows: -50 ℃ to 50 ℃, operating voltage: DC 4-36V, and the output port selects an RS485 connection mode; and cabling to the diagnostic controller mounting location. An installation procedure: measuring, paying off, positioning → installing a sensor fixing rod 5 → installing a dry-wet bulb temperature sensor 4 → laying 1 RVV2x1.0 power line and 1 RVSP2x1.0 communication line to a diagnosis controller → connecting wires on the side of the dry-wet bulb temperature sensor 4.
As shown in fig. 4, a flow sensor 8 installed at the water inlet pipe 2 of the cooling tower for collecting the circulating water amount of the open cooling tower and transmitting a flow signal to the diagnostic controller; a flow sensor 8 (taking an outer clamping type ultrasonic flow sensor as an example) is arranged on a water inlet pipe of a cooling tower, the distance of a straight pipe section is ensured to meet the requirement of the installation distance, the requirements of the straight pipe section before and after the installation position of the flow sensor 8 are front 10D and back 5D (D is the nominal diameter of a pipeline), swirl-generating devices such as a valve, a tee joint and the like in the straight pipe section are ensured to be installed by the flow sensor 8, and 2 outer clamping type ultrasonic flow sensor 8 probe signal wires (provided by a flow sensor 8 manufacturer in a matched mode) are laid to the installation position of a diagnosis controller. An installation procedure: installing an outer clamp type ultrasonic flow sensor integrator nearby the installation position of the integrated diagnosis device → laying an outer clamp type ultrasonic flow sensor integrator power line to the installation position of the integrated diagnosis device → laying an integrator communication line to the installation position of the integrated diagnosis device → calculating the installation distance of the probes by the parameters of electrifying (temporary electricity), inputting pipeline parameters, installation modes (V-type installation), flow speed and the like → measuring, paying off, positioning → marking the mounting positions of the upper and lower probes of the flow sensor 8 → cleaning the mounting position of the probe of the flow sensor 8 → mounting the upper and lower probes of the flow sensor 8 → mounting a probe hoop of the flow sensor 8 → laying 2 probe signal lines of the outer clamp type ultrasonic flow sensor 8 to the mounting position of the outer clamp type ultrasonic flow sensor integrator → the probe of the flow sensor 8 and the side wiring of the integrator.
As shown in fig. 5, the pulse counting module and the permanent magnet are mounted on the cooling tower blower motor 9 and the cooling fan, and are configured to collect the rotation speeds of the motor and the cooling fan, and transmit the rotation speed signal to the diagnostic controller; the permanent magnet 11 is installed: 2 to 3 permanent magnetic pieces 11 are symmetrically arranged on a motor bearing 12 of a fan of a cooling tower (the number is not too large, the number of the permanent magnetic pieces 11 is prevented from being too large, Hall elements are mistakenly identified when the permanent magnetic pieces are excessively densely arranged, the quality of the pulse number is ensured, and misjudgment is prevented), the surface magnetic strength of the permanent magnetic pieces 11 is not lower than 2000GS, and pulse leakage caused by insufficient sensitivity of the Hall elements when the strength is too low is prevented. An installation procedure: cleaning tower fan motor bearing 12 surface → coating permanent magnet 11 fixed glue (AB glue or other glue with fast and firm solidification speed) in selected position → coating permanent magnet 11 surface fixed glue → installing permanent magnet 11. 2-2 to 3 permanent magnetic pieces 11 are symmetrically arranged on a cooling tower fan bearing 12 or a belt pulley (the number is not too large, the number of the permanent magnetic pieces 11 is prevented from being too large, Hall elements are mistakenly identified when the permanent magnetic pieces are arranged too densely, the quality of pulse number is ensured, and misjudgment is prevented), the surface magnetic strength of the permanent magnetic pieces 11 is not lower than 2000GS, and pulse leakage caused by insufficient sensitivity of the Hall elements when the strength is too low is prevented. An installation procedure: cleaning the surface of a cooling tower fan bearing 12 or a belt pulley → coating fixing glue (AB glue or other glue with high solidification speed and firmness) of the permanent magnet piece 11 at a selected position → coating the fixing glue on the surface of the permanent magnet piece 11 → installing the permanent magnet piece 11. Installation of a pulse technology module: a pulse counting module DA is arranged above a permanent magnet piece 11 arranged on a fan motor bearing 12 of a cooling tower, wherein a Hall element (with the sensitivity of 30 GS-200 GS) in the pulse counting module 10 is aligned to the position right above the permanent magnet piece 11, and the vertical distance between the surface of the permanent magnet piece 11 and the Hall element is preferably less than 1cm, so that the Hall element can correctly sense the magnetic field of the permanent magnet piece 11, and metering errors caused by reduction of the magnetic field intensity due to overlarge distance are avoided. An installation procedure: installing a pulse counting module 10 fixing support → installing the pulse counting module 10 → respectively laying 1 RVV2x1.0 power line and 1 RVVP2x1.0 pulse signal line to the diagnosis controller → the pulse counting module 10 side wiring, and installing the pulse counting module DB on the cooling tower heat radiation fan bearing 12 in the same way.
The remote water meter is arranged on the water replenishing pipe and the sewage draining pipe of the open cooling tower and is used for detecting the water replenishing quantity and the sewage draining quantity of the open cooling tower and transmitting a water replenishing quantity signal and a sewage draining quantity signal to the diagnosis controller; and laying a power supply cable and a communication cable to the diagnosis controller after the installation is finished. An installation procedure: selecting the installation position of the remote water meter → measuring the installation distance → cutting the pipeline → installing the loose joint → installing the remote water meter → respectively laying 1 RVV2x1.0 power line and 1 RVSP2x1.0 communication line to the diagnosis controller → connecting the water meter side → connecting the diagnosis controller side.
The three-phase remote transmission type intelligent electric meter and the mutual inductor are arranged at the lower end of a circuit breaker in a control cabinet of the cooling tower, are used for detecting the real-time power, the instantaneous current of each phase and the accumulated power consumption and electric quantity of the open cooling tower, and respectively transmit a real-time power signal, a current signal and an electric quantity signal to the diagnosis controller; a current transformer is arranged below a circuit breaker in a cooling tower control cabinet, and the transformation ratio of the transformer is determined according to the rated power of a tower fan; the three-phase remote transmission type intelligent electric meter is installed in the cooling tower control cabinet, and a communication cable is laid to the diagnosis controller after the installation is completed. An installation procedure: cutting off the power of the cooling tower control cabinet → detaching a power line of the cooling tower at the lower end of the circuit breaker → installing a current transformer (paying attention to the direction sequence of the power line passing through the current transformer, S1 entering and S2 exiting) → installing a three-phase remote transmission type smart meter → connecting a signal line of the transformer → connecting the power line of the smart meter and a three-phase power line → laying 1 RVSP2x1.0 communication line to the diagnosis controller.
The working mechanism of the diagnostic controller can be compiled as required, and one diagnostic mechanism can be as follows:
the open cooling tower on-line comprehensive diagnosis integrated device can directly acquire open cooling tower and peripheral related operation parameters for on-line comprehensive diagnosis of the open cooling tower, such as open cooling tower water inlet, water outlet temperature, open cooling tower air inlet dry-wet bulb temperature, open cooling tower water replenishing quantity, open cooling tower sewage discharging quantity, open cooling tower motor real-time power, three-phase instantaneous current and accumulated power consumption, open cooling tower motor rotating speed, open cooling tower cooling fan rotating speed (aiming at belt transmission), and open cooling tower operation state (operation, stop and fault).
Open cooling tower cooling capacity diagnosis: the integrated device for online comprehensive diagnosis of the open cooling tower compares a calculated approximation value with a threshold value (standard working condition 1, 1-level energy efficiency approximation threshold value is 3 ℃, 2-level energy efficiency approximation threshold value is 4 ℃ and 3-level energy efficiency approximation threshold value is 5 ℃) corresponding to a set energy efficiency grade according to the collected water outlet temperature of the open cooling tower and the air inlet wet bulb temperature of the air inlet surface of the open cooling tower, and performs comprehensive judgment by combining the energy efficiency grade of the cooling tower to judge whether the cooling capacity of the cooling tower is normal or not.
Open cooling tower motor and radiator fan rotational speed diagnosis: the on-line comprehensive diagnosis integrated device for the open cooling tower collects the pulse number respectively according to the pulse counting modules and the permanent magnets which are installed on the motor of the open cooling tower and the cooling fan, the diagnosis controller calculates the real-time rotating speeds of the motor of the cooling tower and the cooling fan in a sampling period according to the number of the permanent magnets which are installed on the motor of the cooling tower and the cooling fan, and then compares the real-time rotating speeds of the motor of the open cooling tower and the cooling fan with the rated rotating speeds of the motor of the open cooling tower and the cooling fan to judge whether the motor of the cooling tower rotates smoothly, whether the rotating.
Open cooling tower three-phase operation current diagnosis: the on-line comprehensive diagnosis integrated device for the open cooling tower monitors data such as three-phase voltage, three-phase current, instantaneous power, instantaneous energy consumption, accumulated energy consumption and the like of the cooling tower in actual operation according to a current transformer installed at the lower end of a control cabinet of the cooling tower and a three-phase remote transmission type intelligent electric meter installed in the cabinet, a diagnosis controller calculates a rated current value of a motor of the cooling tower, compares the rated current value with the three-phase current value monitored by the three-phase remote transmission type intelligent electric meter, and comprehensively judges whether the cooling tower is normal or not by combining the rotating speed of the motor of the cooling tower and the rotating speed of a cooling fan, whether sudden change exists in voltage, whether a power supply is lack of phase, whether the motor is jammed or not, and whether the cooling fan is jammed or not.
And (3) diagnosing the power consumption ratio of the fan of the open cooling tower: the open cooling tower on-line comprehensive diagnosis integrated device can calculate the real-time fan power consumption ratio (unit: kW.h/m) of the cooling tower by combining the real-time circulation volume of the cooling tower measured by the flow sensor according to the instantaneous power measured by the three-phase remote transmission type intelligent electric meter3) Comparing the calculated power consumption ratio with an energy efficiency standard ( standard working condition 1, 1 level is less than or equal to 0.028,2 level is less than or equal to 0.030,3 level is less than or equal to 0.032,4 level is less than or equal to 0.034, and 5 level is less than or equal to 0.035), and obtaining that the fan power consumption ratio of the cooling tower in the test period isAnd if the abnormal condition occurs, comprehensively judging the reason of the abnormal numerical value by combining the open cooling tower motor and cooling fan rotating speed diagnosis and the open cooling tower three-phase operation current diagnosis.
Diagnosing the drift water quantity and the drift water rate of the open cooling tower: the on-line comprehensive diagnosis integrated device for the open cooling tower calculates the floating water amount of the cooling tower in a detection period according to the water replenishing quantity and the water discharging quantity measured by remote water meters arranged on a water replenishing pipe and a water discharging pipe of the cooling tower in combination with the calculated evaporation water quantity of the open cooling tower in a diagnosis period, calculates the floating water rate of the open cooling tower in the diagnosis period according to the water inlet quantity (accumulated value of circulating water quantity) of the cooling tower in the diagnosis period, compares the floating water rate with a standard limit value (1-grade energy efficiency, less than or equal to 0.004%, 2-grade energy efficiency, less than or equal to 0.005%, 3-grade energy efficiency, less than or equal to 0.006%, 4-grade energy efficiency, less than or equal to 0.008%, 5-grade energy efficiency, and displays the diagnosis result on a human-computer interface, if abnormity occurs, the possible reason of abnormal floating water rate is pushed (such as the water distributing pipe of the cooling tower is too high due to the fact that the water distributing pipe is raised by a water pump is over-lifted by a pressure head during water distribution, and the water drops are taken away by a fan of the . ) And corresponding solutions to human-machine interfaces.
Remote monitoring: the open cooling tower online comprehensive diagnosis integrated device not only supports local checking and operation, but also supports remote access, a 4G industrial Internet of things router is installed in the open cooling tower online comprehensive diagnosis integrated device, data interaction can be carried out with a remote monitoring platform, a user can remotely access a webpage or move a terminal APP, the user can log in the remote monitoring system according to an authorized account number and a password, parameter setting, parameter checking, equipment running state checking, equipment remote start and stop and the like of the diagnosis system are carried out, and an operation manager does not need to check the open cooling tower online comprehensive diagnosis integrated device on a human-computer interface at every time.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. An open cooling tower on-line comprehensive diagnosis integrated device is characterized by comprising a diagnosis controller, a power supply unit, a human-computer interface unit, a wireless transmission module and acquisition equipment, wherein the power supply unit, the human-computer interface unit, the wireless transmission module and the acquisition equipment are respectively connected with the diagnosis controller; the diagnosis controller is externally connected with a mobile terminal through the wireless transmission module; the acquisition device includes:
the water temperature sensor is arranged on a water inlet pipe and a water outlet pipe of the open type cooling tower and is used for collecting the water temperatures of the water inlet pipe and the water outlet pipe and transmitting a water temperature signal to the diagnosis controller;
the dry-wet bulb temperature sensor is arranged on an air inlet surface of the open cooling tower, is used for collecting the air inlet humidity and temperature of the air inlet surface and transmitting a temperature and humidity signal to the diagnosis controller;
the flow sensor is arranged on a water inlet pipe of the cooling tower and used for collecting the circulating water quantity of the open cooling tower and transmitting a flow signal to the diagnosis controller;
the pulse counting module and the permanent magnet are arranged on a motor and a cooling fan of the cooling tower and are used for collecting the rotating speeds of the motor and the cooling fan and transmitting rotating speed signals to the diagnosis controller;
the remote water meter is arranged on a water replenishing pipe and a sewage draining pipe of the cooling tower and is used for collecting the water replenishing quantity and the sewage draining quantity of the open cooling tower and transmitting a water replenishing quantity signal and a sewage draining quantity signal to the diagnosis controller;
the three-phase remote transmission type intelligent electric meter and the mutual inductor are arranged at the lower end of a circuit breaker in a control cabinet of the cooling tower, and are used for detecting the real-time power, the instantaneous current of each phase and the accumulated power consumption and electric quantity of the open cooling tower and respectively transmitting a real-time power signal, a current signal and an electric quantity signal to the diagnosis controller.
2. The integrated device for on-line comprehensive diagnosis of the open cooling tower according to claim 1, wherein the collection device is in connection communication with the diagnosis controller through a 485 communication protocol; the wireless transmission module is connected and communicated with the diagnosis controller through a Modbus communication protocol.
3. The integrated device for on-line comprehensive diagnosis of the open cooling tower according to claim 1, wherein the diagnosis controller is a PLC controller or an MCU controller.
4. The integrated device for on-line comprehensive diagnosis of the open cooling tower of claim 1, wherein the diagnosis controller is configured to display the wet and dry bulb temperature signal, the water replenishment quantity signal, the sewage discharge quantity signal, the water temperature signal, the flow rate signal, the rotation speed signal, the power signal, the current signal and the electric quantity signal through the human-computer interface unit.
5. The integrated device for on-line comprehensive diagnosis of the open cooling tower of claim 1, wherein the diagnosis controller is configured to compare the wet and dry bulb temperature signal, the water replenishment quantity signal, the sewage discharge quantity signal, the water temperature signal, the flow rate signal, the rotation speed signal, the power signal, the current signal and the electric quantity signal with preset standard values in real time, and send comparison results to the human-computer interface unit and the mobile terminal in real time.
6. The integrated device for on-line comprehensive diagnosis of an open cooling tower of claim 1, wherein the mobile terminal comprises a mobile phone, a notebook computer and a desktop computer.
7. The integrated device for on-line comprehensive diagnosis of an open cooling tower of claim 1, wherein the wireless transmission module comprises a WIFI module, an NB-IOT module or a 4G module.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201910935118.6A CN110703016A (en) | 2019-09-29 | 2019-09-29 | Online comprehensive diagnosis integrated device for open cooling tower |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910935118.6A CN110703016A (en) | 2019-09-29 | 2019-09-29 | Online comprehensive diagnosis integrated device for open cooling tower |
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| CN110703016A true CN110703016A (en) | 2020-01-17 |
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| CN201910935118.6A Pending CN110703016A (en) | 2019-09-29 | 2019-09-29 | Online comprehensive diagnosis integrated device for open cooling tower |
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