CN110805542B - Cooling water control method, device and system and computer readable medium - Google Patents
Cooling water control method, device and system and computer readable medium Download PDFInfo
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- CN110805542B CN110805542B CN201910849621.XA CN201910849621A CN110805542B CN 110805542 B CN110805542 B CN 110805542B CN 201910849621 A CN201910849621 A CN 201910849621A CN 110805542 B CN110805542 B CN 110805542B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/06—Cooling; Heating; Prevention of freezing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/04—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for electric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/06—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B23/00—Pumping installations or systems
- F04B23/04—Combinations of two or more pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/06—Control using electricity
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B51/00—Testing machines, pumps, or pumping installations
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Control Of Non-Positive-Displacement Pumps (AREA)
- Control Of Positive-Displacement Pumps (AREA)
Abstract
The invention provides a cooling water control method, a cooling water control device, a cooling water control system and a computer readable medium, wherein the cooling water control method comprises the following steps: acquiring the water pressure of a main cooling water pipe and/or acquiring the running number of normal running common cooling water pumps; comparing the water pressure of the main cooling water pipe with a low water pressure set value, and/or comparing the running number of the normally running common cooling water pumps with a low number set value; and if the water pressure is less than or equal to the low water pressure set value and/or if the operation quantity is less than or equal to the low quantity set value, controlling the emergency cooling water pump to be put into operation. The cooling water control method can avoid production equipment halt caused by too low water pressure of the main cooling water pipe, and can start the production equipment immediately after the production equipment is halted without restarting a cooling system because the water pressure of the main cooling water pipe is kept at a higher level, thereby achieving the effect of reducing the production dead time.
Description
Technical Field
The application belongs to the technical field of water cooling systems, and particularly relates to a cooling water control method, device and system and a computer readable medium.
Background
Some factory equipment has strict cooling water requirements, such as an air compressor and a centrifuge unit in a nitrogen-hydrogen station, the cooling water condition of the factory equipment is strict and needs to be higher than a certain pressure, and the air compressor and the centrifuge can be stopped by alarming when the pressure is lower than the certain pressure, so that the supply of compressed air and nitrogen for production is stopped. The mill can lead to the power failure because of emergency sometimes, for example thunderstorm weather, need restart cooling water pump after the power supply resumes, then opens nitrogen hydrogen station equipment, resumes water, gas supply, and production just possesses the condition that begins to resume normal. Then, after the cooling water pump is stopped, several necessary steps must be performed to recover the normal production, and the production stoppage time is long.
The conditions for the operation of the air compressor are electricity and cooling water. Under the general condition, the air compressor has more reliable power supply mode, is difficult for taking place the power failure, but, cooling water pump's power supply reliability is general, in case the power failure condition takes place, cooling water pump very easily shuts down. Moreover, when the cooling water pump is stopped, the water pressure in the cooling pipeline can drop rapidly in a short time, and then the centrifuge and the air compressor which rely on cooling water greatly can be alarmed to stop under the condition of water shortage.
Disclosure of Invention
In view of the above, the present application provides a cooling water control method, device, system and computer readable medium to solve the problem that the shutdown of the production equipment is caused when the normal cooling water pump is shut down.
In order to achieve the above object, the present invention provides a cooling water control method including:
acquiring the water pressure of a main cooling water pipe and/or acquiring the running number of normal running common cooling water pumps;
comparing the water pressure to a low water pressure set point, and/or comparing the number of runs to a low number set point;
and if the water pressure is less than or equal to the low water pressure set value and/or if the operation quantity is less than or equal to the low quantity set value, controlling the emergency cooling water pump to be put into operation.
Preferably, before the step of obtaining the number of the normal running common cooling water pumps, the method further comprises:
detecting the running state of each common cooling water pump;
if the running state of the common cooling water pump is normal, recording as a first mark value; if the running state of the common cooling water pump is abnormal, recording as a second marking value;
and counting the number of the common cooling water pumps marked as the first mark value.
Preferably, the low quantity set point is 2, and the low water pressure set point is 0.4 Mpa.
The present invention also provides a cooling water control apparatus, including:
the data acquisition module is used for acquiring the water pressure of the main cooling water pipe and/or acquiring the running number of the normally running common cooling water pumps;
a comparison module for comparing the water pressure with a low water pressure set value and/or comparing the operation quantity with a low quantity set value;
and the control module is used for controlling the emergency cooling water pump to be put into operation if the water pressure is less than or equal to the low water pressure set value and/or if the operation quantity is less than or equal to the low quantity set value.
Preferably, the cooling water control apparatus further includes:
the water pump state detection module is used for detecting the running state of each common cooling water pump;
the marking module is used for marking as a first marking value if the running state of the common cooling water pump is normal; if the running state of the common cooling water pump is abnormal, recording as a second marking value;
and the counting module is used for counting the number of the common cooling water pumps marked as the first marking value.
The present invention also provides a cooling system comprising:
a main cooling water pipe;
the common cooling water pump is connected with the main cooling water pipe;
the emergency cooling water pump is connected with the main cooling water pipe; and
the cooling water control device described above.
Preferably, the emergency cooling water pump comprises a generator and a water pump body, and a driving shaft of the generator is connected with the water pump body.
Preferably, the generator is a diesel generator.
The present invention also provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the cooling water control method as described above.
Compared with the prior art, the implementation mode of the invention has the following beneficial effects: when the water pressure of the main cooling water pipe is smaller than or equal to the low water pressure set value or when the operation number of the normally-operated common cooling water pumps is smaller than or equal to the low number set value, the number of the common cooling water pumps in the normal operation state is less, the emergency cooling water pumps are controlled to be put into operation, the water pressure of the main cooling water pipe can be increased after the emergency cooling water pumps are operated, and the consequence that production equipment is shut down due to insufficient water supply of the main cooling water pipe is avoided.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive labor.
FIG. 1 is a schematic flow chart diagram of an embodiment of a cooling water control method of the present invention;
fig. 2 is a schematic flow chart of another embodiment of the cooling water control method of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
It will be understood that the terms "comprises" and/or "comprising," when used in this specification and the appended claims, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.
It is also to be understood that the terminology used in the description of the present application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in the specification of the present application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.
It should be understood that, the order of writing each step in this embodiment does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of this embodiment of the present invention.
In order to explain the technical means described in the present application, the following description will be given by way of specific embodiments.
Referring to fig. 1 to 2, which are schematic flow charts of an embodiment of the cooling water control method of the present application, for convenience of description, only the portions related to the embodiment of the present application are shown.
The cooling water control method comprises the following steps:
step S101: and acquiring the water pressure of the main cooling water pipe and/or acquiring the running number of the normally running common cooling water pumps.
In order to explain the cooling water control method, the following description will be made with reference to a cooling water control device.
The cooling water control device comprises a data acquisition module, wherein the data acquisition module is used for acquiring the water pressure of a main cooling water pipe and/or acquiring the running number of normally running common cooling water pumps. The data acquisition module comprises a water pressure detection module and/or a running quantity detection module.
The water pressure detection module is used for detecting the water pressure of the main cooling water pipe and can be conventional water pressure detection equipment (namely a pressure sensor) for detecting the water pressure in the water pipe; under the normal condition, in order to ensure that the water pressure of the main cooling water pipe is at a higher level, a plurality of common cooling water pumps are required to be arranged, the specific number is determined according to actual needs, the common cooling water pumps can be connected in parallel, and the flow of the main cooling water pipe is the sum of the flows of all the common cooling water pumps. The operation quantity detection module is used for acquiring the operation quantity of the normally-operated common cooling water pumps, namely acquiring the number of the normally-operated common cooling water pumps, such as: the operation quantity detection module can be a rotating speed detection device arranged on each common cooling water pump, and determines whether the common cooling water pumps normally operate or not by detecting the rotating speeds of the common cooling water pumps, and the specific judgment mode can be as follows: when the rotating speed is less than or equal to the rotating speed set value, the abnormality of the common cooling water pump is indicated; and when the rotating speed is greater than the rotating speed set value, the normal operation of the common cooling water pump is indicated. Of course, besides the normal operation of the common cooling water pump, the common cooling water pump can be judged by the rotating speed, and other judgment modes can be provided, such as detecting the input voltage of the motor of the common cooling water pump and judging the normal operation of the common cooling water pump by detecting the voltage.
The data acquisition module may include only one of the water pressure detection module and the operation quantity detection module, or both of them.
Step S102: comparing the water pressure to a low water pressure set point, and/or comparing the operation quantity to a low quantity set point.
The cooling water control device also comprises a comparison module, wherein the comparison module is used for comparing the water pressure of the main cooling water pipe with a low water pressure set value and/or comparing the running number of the normally running common cooling water pumps with a low number set value.
The comparison module can be a software functional module or a hardware comparison circuit. When the comparison module is a software function module, two set values are involved in the software program, namely a low water pressure set value and a low quantity set value, wherein if the water pressure of the main cooling water pipe is less than or equal to the low water pressure set value, or the running quantity of the normally running common cooling water pumps is less than or equal to the low quantity set value, the running quantity of the normally running common cooling water pumps is too small, or the normally running common cooling water pumps are abnormal. The specific values of the low water pressure set value and the low quantity set value are set according to actual needs, in the embodiment, the low water pressure set value is 0.4Mpa, and the low quantity set value is 2.
Step S103: and if the water pressure is less than or equal to the low water pressure set value and/or if the operation quantity is less than or equal to the low quantity set value, controlling the emergency cooling water pump to be put into operation.
The cooling water control device also comprises a control module, and the control module is used for: and if the water pressure of the main cooling water pipe is less than or equal to the low water pressure set value and/or if the operation quantity of the normal operation is less than or equal to the low quantity set value, controlling the emergency cooling water pump to be put into operation.
In cooling system, emergent cooling water pump can with the cooling water pump setting of using always in parallel to the water pressure of increase owner's cooling water pipe, certainly, under the normal circumstances of assurance owner's cooling water pipe intercommunication, also can with the whole series arrangement that all cooling water pumps used always constitute. In order to guarantee that the emergency cooling water pump can still normally operate when power is cut off, the emergency cooling water pump comprises a generator and a water pump body, a driving shaft of the generator is connected with the water pump body, the generator can be a diesel generator, and the diesel generator is enabled to be put into operation through a starting instruction for the diesel generator. Therefore, even if power is cut off, the normal operation of the generator is not influenced.
The control module can be an independent controller, can be a control chip, such as a single chip microcomputer or a Siemens PLC, and can also be a computer host. And when the water pressure of the main cooling water pipe is less than or equal to the low water pressure set value and/or when the running number of the normally running common cooling water pumps is less than or equal to the low number set value, controlling the emergency cooling water pumps to be put into operation, namely starting operation. And the control module outputs a control instruction to the emergency cooling water pump so as to control the emergency cooling water pump to be put into operation. Correspondingly, when the water pressure of the main cooling water pipe is greater than the low water pressure set value, the emergency cooling water pump is controlled not to be put into use; and when the running number of the normally running common cooling water pumps is greater than the low-number set value, controlling the emergency cooling water pumps not to be put into use.
The cooling water control method can avoid the production equipment halt caused by the over-low water pressure of the main cooling water pipe, and the water pressure of the main cooling water pipe is kept at a higher level, so the production equipment can be started immediately after the production equipment is halted, and the production equipment can be started without starting the cooling system again, thereby achieving the effect of reducing the production dead time, and even achieving the effect of avoiding the production dead time. Taking an air compressor as an example, when the water pressure of a main cooling water pipe of a nitrogen-hydrogen station is detected to be less than or equal to a low water pressure set value and/or the running number of normal running common cooling water pumps is detected to be less than or equal to a low number set value, a diesel generator in an emergency cooling water pump is controlled to start, normal water supply is ensured, and the water pressure of cooling water of the air compressor is ensured to be within an allowable range.
In addition to the above cooling water control method, in another embodiment, before step S101, the cooling water control method further includes the following steps:
step S201: and detecting the running state of each common cooling water pump.
The cooling water control device also comprises a water pump state detection module for detecting the running state of each common cooling water pump. The water pump state detection module can be a rotating speed detection device arranged on each common cooling water pump, and determines whether the common cooling water pumps normally operate or not by detecting the rotating speeds of the common cooling water pumps, so that the specific judgment mode can be as follows: when the rotating speed is less than or equal to the rotating speed set value, the abnormality of the common cooling water pump is represented, such as: the fault of the common cooling water pump causes the common cooling water pump to be powered off; and when the rotating speed is greater than the rotating speed set value, the normal operation of the common cooling water pump is indicated. Of course, besides the normal operation of the common cooling water pump, other judgment modes can be provided, such as detecting the input voltage of the motor of the common cooling water pump, and judging whether the common cooling water pump operates normally according to the voltage level.
Step S202: if the running state of the common cooling water pump is normal, recording as a first mark value; and if the running state of the common cooling water pump is abnormal, recording as a second mark value.
For example, if the operating state of the common cooling water pump is normal, the common cooling water pump is marked as number 1; if the running state of the common cooling water pump is abnormal, the running state is marked as a numeral 0.
The cooling water control device also comprises a marking module, a first marking module and a second marking module, wherein the marking module is used for marking as a first marking value if the running state of the common cooling water pump is normal; and if the running state of the common cooling water pump is abnormal, recording as a second mark value. The marking module may be a software module for realizing the functions thereof, or may be a hardware circuit capable of realizing the marking.
Step S203: and counting the number of the common cooling water pumps marked as the first mark value.
The cooling water control device also comprises a counting module which is used for counting the number of the common cooling water pumps which are recorded as the first mark value. Then, the statistical module is used to count the number of the numbers 1 or count the sum of the numbers 1 to obtain the number or the sum of the numbers 1.
The statistical module can be a software module for realizing the functions of the statistical module, and can also be a hardware counting device such as a counter.
The invention also discloses a cooling water control device, and the specific structure of the cooling water control device refers to the embodiment and is not repeated herein.
The invention also discloses a cooling system which comprises a main cold water pipe, a common cold water pump, an emergency cooling water pump and a cooling water control device, wherein the specific structure of the cooling water control device refers to the embodiment and is not repeated herein.
The emergency cooling water pump comprises a generator and a water pump body, and a driving shaft of the generator is connected with the water pump body. Preferably, the generator is a diesel generator.
The present invention also provides a computer-readable storage medium storing a computer program which, when executed by a processor, implements the steps of the cooling water control method as described above.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (6)
1. A cooling water control method for an air compressor of a nitrogen-hydrogen station is characterized by comprising the following steps:
detecting the running state of each common cooling water pump;
if the running state of the common cooling water pump is normal, recording as a first mark value; if the running state of the common cooling water pump is abnormal, recording as a second marking value, wherein when the rotating speed of the common cooling water pump is less than or equal to a rotating speed set value, the common cooling water pump is indicated to be abnormal;
counting the number of the common cooling water pumps marked as a first mark value;
acquiring the running number of normal running common cooling water pumps;
comparing the run number to a low number set point;
if the operation quantity is less than or equal to the low quantity set value, controlling an emergency cooling water pump to be put into operation, wherein the emergency cooling water pump is driven by a diesel generator;
and when the running number of the normally running common cooling water pumps is greater than the low-number set value, controlling the emergency cooling water pumps not to be put into use.
2. The cooling water control method according to claim 1, wherein the low number set value is 2.
3. A cooling water control device for a nitrogen-hydrogen station air compressor is characterized by comprising:
the water pump state detection module is used for detecting the running state of each common cooling water pump;
the marking module is used for marking as a first marking value if the running state of the common cooling water pump is normal; if the running state of the common cooling water pump is abnormal, recording as a second marking value, wherein when the rotating speed of the common cooling water pump is less than or equal to a rotating speed set value, the common cooling water pump is indicated to be abnormal;
the counting module is used for counting the number of the common cooling water pumps marked as the first marking value;
the data acquisition module is used for acquiring the running number of the normally running common cooling water pumps;
a comparison module for comparing the running number with a low number set value;
the control module is used for controlling an emergency cooling water pump to be put into operation if the operation number is less than or equal to the low number set value, and the emergency cooling water pump is driven by a diesel generator; and when the running number of the normally running common cooling water pumps is greater than the low-number set value, controlling the emergency cooling water pumps not to be put into use.
4. A cooling system, comprising:
a main cooling water pipe;
the common cooling water pump is connected with the main cooling water pipe;
the emergency cooling water pump is connected with the main cooling water pipe; and
the cooling water control apparatus as claimed in claim 3.
5. The cooling system according to claim 4, wherein the emergency cooling water pump includes a generator and a water pump body, and a drive shaft of the generator is connected to the water pump body.
6. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program which, when executed by a processor, implements the steps of the cooling water control method according to any one of claims 1-2.
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| CN201910849621.XA CN110805542B (en) | 2019-09-09 | 2019-09-09 | Cooling water control method, device and system and computer readable medium |
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| CN201910849621.XA CN110805542B (en) | 2019-09-09 | 2019-09-09 | Cooling water control method, device and system and computer readable medium |
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| JP3414881B2 (en) * | 1995-04-17 | 2003-06-09 | 株式会社川本製作所 | Water supply device |
| CN205619636U (en) * | 2016-05-06 | 2016-10-05 | 深圳市安格斯机械有限公司 | Cold water machine with detect water pressure and flow |
| CN206386256U (en) * | 2016-11-30 | 2017-08-08 | 上海市城市排水有限公司 | A kind of cooling water pipe path control system |
| CN108167170A (en) * | 2017-12-13 | 2018-06-15 | 广新海事重工股份有限公司 | A kind of frequency control center salt water cooling system |
| CN108507245B (en) * | 2018-04-04 | 2021-06-08 | 重庆大学 | Nested closed-loop full-automatic industrial circulating cooling control system and control method |
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