CN212109085U - Central air conditioning water charging system and central air conditioning system - Google Patents
Central air conditioning water charging system and central air conditioning system Download PDFInfo
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- CN212109085U CN212109085U CN202020608555.5U CN202020608555U CN212109085U CN 212109085 U CN212109085 U CN 212109085U CN 202020608555 U CN202020608555 U CN 202020608555U CN 212109085 U CN212109085 U CN 212109085U
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Abstract
The embodiment of the utility model provides a relate to air conditioner technical field, disclose central air conditioning water charging system and central air conditioning system, water charging system includes: one end of the main water replenishing pump is connected with the reservoir through a pipeline, and the other end of the main water replenishing pump is connected with the cooling tower through a pipeline and is used for pumping water from the reservoir to the cooling tower under the control of the controller; the second water injection port of the cooling tower is connected with a municipal water supply pipeline, and a check valve is arranged between the municipal water supply pipeline and the second water injection port of the cooling tower and used for preventing water of the cooling tower from flowing back into the municipal water supply pipeline; the water pressure monitor is arranged on one side, facing the municipal water supply pipeline, of the check valve and is used for monitoring the water pressure of the municipal water supply pipeline and sending a water pressure value to the controller; the controller is used for receiving the water pressure value, and sending a starting signal to the main water replenishing pump when the water pressure value is smaller than a first pressure threshold value, and indicating the main water replenishing pump to pump water from the reservoir and replenish water to the cooling tower. Through the utility model provides a problem that the moisturizing is untimely.
Description
Technical Field
The embodiment of the utility model provides a relate to air conditioner technical field, concretely relates to central air conditioning water charging system and central air conditioning system.
Background
At present, the domestic communication industry is developed at a high speed, the scale of a data center is larger and larger, energy conservation in China is more and more paid attention to the international and domestic, research shows that the energy consumption of an air conditioning system accounts for more than 40% of that of the data center, in order to reduce the energy consumption of the air conditioning system as far as possible, the large data center basically adopts a water-cooling central air conditioner for refrigeration, heat is taken away through evaporation of cooling water in a cooling tower, municipal water is required to be continuously consumed in the running process of the water-cooling central air conditioner, and statistics shows that tap water of the large data center central air conditioning system is consumed at 200. The data center server shows the trend of high heat and high density, once a fault occurs, the processing time is very short, and once the fault occurs, the normal use of communication and internet in partial areas or even nationwide areas can be influenced, and immeasurable loss can be brought.
In the research process, the applicant finds that after the municipal pipe network is cut off water, the central air-conditioning system cannot identify the municipal pipe network, and only when the water level in the cooling tower is lower than a warning value, an alarm is given out to inform a user to manually or automatically start the water replenishing pump. The method has the disadvantages that when the low water level of the cooling tower is alarmed, the water quantity in the cooling tower is very small, the cooling water is in a high-temperature state, and the central air conditioner is stopped, so that the risk is brought to the normal operation of the data center.
SUMMERY OF THE UTILITY MODEL
In view of the above problem, the embodiment of the utility model provides a central air conditioning water charging system and central air conditioning system for solve the untimely problem of moisturizing that exists among the prior art.
According to the utility model discloses an aspect provides a central air conditioning water charging system, include: the system comprises a water pressure monitor, a main water replenishing pump, a cooling tower and a controller;
one end of the main water replenishing pump is connected with the reservoir through a pipeline, the other end of the main water replenishing pump is connected with the first water holding port of the cooling tower through a pipeline, and the main water replenishing pump is used for pumping water from the reservoir to the cooling tower under the control of the controller;
the second water injection port of the cooling tower is connected with a municipal water supply pipeline, and a check valve is arranged between the municipal water supply pipeline and the second water injection port of the cooling tower and used for preventing water of the cooling tower from flowing back into the municipal water supply pipeline;
the water pressure monitor is arranged on one side, facing the municipal water supply pipeline, of the check valve and is used for monitoring the water pressure of the municipal water supply pipeline and sending a water pressure value to the controller;
and the controller is used for receiving the water pressure value and sending a starting signal to the main water replenishing pump when the water pressure value is smaller than a first pressure threshold value, so as to instruct the main water replenishing pump to pump water from the reservoir and replenish water to the cooling tower.
Preferably, when the water pressure value is greater than or equal to the first pressure threshold value, the controller sends a stop signal to the main water replenishing pump to instruct the main water replenishing pump to stop replenishing water.
Preferably, the water pressure monitor periodically measures the water pressure of the municipal water supply pipeline and sends the water pressure value to the controller.
Preferably, the controller is provided with a timer, the controller calculates a water pressure monitoring average value according to the water pressure value received in a preset timing period, and controls the main water replenishing pump according to the water pressure monitoring average value.
Preferably, the main water replenishing pump comprises a first main water replenishing pump and at least one second main water replenishing pump;
the first main water replenishing pump and the at least one second main water replenishing pump are respectively connected with the reservoir through one end of a pipeline, and the other end of the pipeline is connected with a first water filling port of the cooling tower;
the first main water replenishing pump and the at least one second main water replenishing pump are respectively connected with the controller;
and the controller sends a starting signal to the first main water replenishing pump when the water pressure monitoring average value is smaller than a first pressure threshold value, and sequentially sends a starting signal to the at least one second main water replenishing pump if the first main water replenishing pump fails to be started.
Preferably, when the water pressure monitoring average value is smaller than a second pressure threshold value, the controller simultaneously sends a start signal to the first main water replenishing pump and the at least one second main water replenishing pump.
Preferably, the system further comprises a spare water replenishing pump, one end of the spare water replenishing pump is connected with the reservoir through a pipeline, and the other end of the spare water replenishing pump is connected with the cooling tower through a pipeline and is electrically connected with the controller;
and the controller sends a starting signal to the standby water replenishing pump when the first main water replenishing pump and all the at least one second main water replenishing pump fail to start.
Preferably, the system further comprises an alarm, wherein the alarm is electrically connected with the controller;
when the water pressure monitoring average value is smaller than a third pressure threshold value, the controller sends an alarm control signal to the alarm;
and the alarm gives an alarm according to the alarm control signal controller.
Preferably, a water level measurer is arranged in the cooling tower and used for measuring the water level in the cooling tower and sending the measured water level value to the controller;
and the controller sends a starting signal to the main water replenishing pump when the water level measured value is smaller than a water level threshold value and the water pressure value is greater than or equal to the first pressure threshold value.
The embodiment of the utility model provides a central air conditioning system is still provided, including the central air conditioning water charging system in above-mentioned embodiment.
By the way, the embodiment of the utility model provides an keep apart municipal water supply pipe and cooling tower system through increasing the check valve to through set up water pressure monitor in municipal water supply pipe, measure municipal water supply pipe's water pressure, when water pressure is less than first water pressure threshold value, then control main use moisturizing pump to the cooling tower carries out the moisturizing, through this kind of mode, can in time carry out the moisturizing to the cooling tower when municipal water supply pipe supplies water and changes, has solved among the prior art to the water level detection in the cooling tower untimely, causes the water level to hang down to report to the police, and leads to the problem of central air conditioning system trouble. Meanwhile, the cooling tower is automatically replenished with water by automatically starting the water replenishing pump, so that the water replenishing efficiency is greatly improved, and the labor cost is saved.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a structure diagram of a central air-conditioning water supply system provided by an embodiment of the invention;
fig. 2 shows a control diagram of a central air-conditioning water supply system provided by the embodiment of the invention.
The reference numbers in the detailed description are as follows:
the water supply system comprises a municipal water supply pipeline 100, a check valve 101, a water pressure monitor 102, a main water replenishing pump 200, a first main water replenishing pump 201, a second main water replenishing pump 202, a third main water replenishing pump 203, a standby water replenishing pump 204, a cooling tower 300, a water level measurer 301, a controller 500 and a reservoir 600.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
In order to solve the problem that the warning that exists among the prior art is relatively slow and can't carry out the moisturizing automatically, the embodiment of the utility model provides a central air conditioning water charging system. In the current central air-conditioning system, the temperature reduction of the central air-conditioning system mainly depends on cooling liquid in a cooling tower for temperature reduction, the cooling liquid is water usually taken from a municipal water supply pipeline, along with the operation of the air-conditioning system, the liquid in the cooling tower continuously flows into the air-conditioning system for temperature reduction of the air-conditioning system, and because the temperature of the air-conditioning system is very high, the consumption of the water is also large, so that the important thing is to ensure that enough cooling liquid is in the cooling tower.
The water replenishing system of the central air conditioner provided by the embodiment of the utility model is shown in fig. 1 and comprises a water pressure monitor 102, a main water replenishing pump 200, a cooling tower 300, a reservoir 600 and a controller 500;
the water reservoir 600 is connected to the municipal water supply pipeline 100, through which water is normally stored, and stores an amount of water that enables the cooling tower 300 to normally operate for 12-24 hours. When the municipal water supply pipeline is normal, the water storage tank is in a water storage state, and the cooling tower supplies water through the municipal water supply pipeline; when municipal water supply pipe cut off the water, perhaps, during municipal water supply pipe decompression, then can follow through starting the moisturizing pump the cistern carries out the moisturizing to avoid because municipal water supply pipe cuts off the water and the cooling tower that causes lacks water.
One end of the main water replenishing pump 200 is connected with a municipal water supply pipeline 100 through a pipeline, and the other end of the main water replenishing pump is connected with a first water injection port of the cooling tower 300 through a pipeline, and is used for pumping water from the reservoir 600 to the cooling tower 300 under the control of the controller 500; under normal conditions, the temperature of water is not more than 50 ℃, the flow Q is 10-100m3/h, the lift is not less than 50 m, the working voltage is alternating current 220V, the frequency is 50HZ, the flow, the efficiency and the like of the equipment in each operating condition range are not allowed to generate negative deviation, the positive deviation of the full lift at an operating point is not more than 5%, the cavitation allowance of a water pump is not allowed to have positive deviation, and the equipment can safely, economically and efficiently operate under various operating conditions and has good cavitation performance.
A second water injection port of the cooling tower 300 is connected with a municipal water supply pipeline, and a check valve 101 is arranged between the municipal water supply pipeline 100 and the second water injection port of the cooling tower 300 and used for preventing water of the cooling tower from flowing back into the municipal water supply pipeline 100; the water pressure monitor 102 is disposed on a side of the check valve 101 facing the municipal water supply pipeline 100, and is configured to monitor the water pressure of the municipal water supply pipeline 100 and send a water pressure monitoring value to the controller 500. Through increasing the check valve, can effectually prevent that the water among the air conditioning system from flowing back to in the municipal water supply pipe, simultaneously, through increasing the check valve, also improved the true water pressure of water pressure monitor's measurement can more true reaction municipal water supply pipe, can not cause the condition that water pressure measurement can not react municipal water supply pipe because of the fluctuation of air conditioning system rivers.
The controller 500 is configured to receive the water pressure monitoring value, and send a start signal to the main water replenishing pump 200 when the water pressure monitoring value is smaller than a first pressure threshold value, so as to instruct the main water replenishing pump 200 to pump water from the reservoir 600 and replenish water to the cooling tower. The controller 500 is a common single chip or other PLC control circuit, and includes a plurality of input and output pins, the input end of the controller is mainly connected to the water pressure monitor, the output end of the controller includes different output pins, and each output pin can be connected to different main water replenishing pumps as required. By the way, the embodiment of the utility model provides an keep apart municipal water supply pipe and cooling tower system through increasing the check valve to through set up water pressure monitor in municipal water supply pipe, measure municipal water supply pipe's water pressure, when water pressure is less than first water pressure threshold value, then control main use moisturizing pump to the cooling tower carries out the moisturizing, through this kind of mode, can in time carry out the moisturizing to the cooling tower when municipal water supply pipe supplies water and changes, has solved among the prior art to the water level detection in the cooling tower untimely, causes the water level to hang down to report to the police, and leads to the problem of central air conditioning system trouble. Meanwhile, the cooling tower is automatically replenished with water by automatically starting the water replenishing pump, so that the water replenishing efficiency is greatly improved, and the labor cost is saved.
Further, in order to increase the reliability of the central air-conditioning water replenishing system, the water pressure monitor periodically measures the water pressure of the municipal water supply pipeline, for example, a sampling period can be set to be 5 seconds (which can be adjusted by a user in advance), a water pressure monitoring value is calculated by taking 6 sampling periods (which can be adjusted by the user in advance) as a reference, and the controller is provided with a timer for calculating a water pressure monitoring average value according to the water pressure monitoring value received within the preset timing period. Through this kind of mode can be more accurate reaction municipal water supply pipe's the water pressure condition, avoid the erroneous judgement. The controller can control the main water replenishing pump according to the water pressure monitoring average value, and the water is replenished to the cooling tower from the water storage tank.
Furthermore, because of the importance of the water supply system, in order to avoid that the main water replenishing pump causes untimely water replenishing due to a fault, the embodiment of the present invention further sets the main water replenishing pump to be multiple, including a first main water replenishing pump and at least one second main water replenishing pump, where the first main water replenishing pump and the at least one second main water replenishing pump respectively pass through a pipeline, one end of the first main water replenishing pump is connected with the reservoir, and the other end of the first main water replenishing pump is connected with the first water filling port of the cooling tower, it should be noted that the first water filling port may be multiple, or may be one, that is, the first main water replenishing pump and the second main water replenishing pump may be respectively connected with the cooling tower through different first water filling ports, or may be connected with the cooling tower through one first water filling port; the first main water replenishing pump and the at least one second main water replenishing pump are respectively connected with the controller. As shown in fig. 1, the system comprises a first main water replenishing pump 201, a second main water replenishing pump 202 and a third main water replenishing pump 203; the first main water replenishing pump 201 is connected with a pipeline extending out of the reservoir through a single pipeline, and the other end of the first main water replenishing pump is connected with the cooling tower; the second main water replenishing pump 202 is also connected with a pipeline extending out of the reservoir through one end of an independent pipeline, and the other end of the independent pipeline is connected with the cooling tower; the third main water replenishing pump 203 is also connected with a pipeline extending out of the cooling tower through one end of an independent pipeline, and the other end of the independent pipeline is connected with the cooling tower; the plurality of main water replenishing pumps can share one pipeline to be connected with the reservoir or can be respectively connected with the reservoir, but when the cooling tower is connected, the independent pipeline is adopted to be connected with the cooling tower, so that the main water replenishing pumps can work independently without mutual influence, and on one hand, the water supply safety can be ensured; on the other hand, the process of water replenishing can be accelerated as required, and air conditioner faults caused by too slow water replenishing are avoided.
Further, the system further comprises a standby water replenishing pump 204, and the standby water replenishing pump 204 is used for backing up the main water replenishing pump, so that the condition that the use of the air conditioner is influenced due to the breakdown of a water replenishing system when all the main water replenishing pumps are in failure is prevented.
Further, in order to ensure moisturizing safety more, prevent when water pressure monitor 102 breaks down, cause the unable discernment of system whether lack of water and lead to the moisturizing failure, the embodiment of the utility model provides a further set up water level measurement ware 301 in cooling tower 300, when the system monitors through water pressure monitor, also monitor through the water level measurement ware water pressure monitor is out of order, can ensure to pass through the water level measurement ware carries out the control of moisturizing.
Furthermore, the central air-conditioning water replenishing system also comprises an alarm, and the alarm is electrically connected with the controller; when the water pressure monitoring average value is too much and water cannot be supplemented, the controller sends an alarm control signal to the alarm; and the alarm gives an alarm according to the alarm control signal controller.
Based on the settings of the main water replenishing pumps, the spare water replenishing pumps and the water level measuring device, the controller may perform different controls on the main water replenishing pumps and the spare water replenishing pumps according to the detection result of the water pressure by the water pressure monitor and the measurement result of the water level by the water level measuring device, as shown in fig. 2:
step 401: the controller receives a water pressure monitoring value and a water level value sent by the water pressure monitor and the water level measurer;
the water pressure monitoring value and the water level value are transmitted in an electric signal mode through a pin connected with the controller, and the transmission modes are common in the prior art.
Step 402: the controller judges whether the water pressure monitoring value is smaller than a first pressure threshold value;
the pressure detection range of the commonly used pressure sensor is 0-3MPa, the temperature range is 0-100 ℃, and the fixation: 1/4SAE, operating temperature: 0-50 ℃, temperature accuracy: ± 0.1% of standard full range, overpressure: double the pressure range. The controller can set a hydraulic monitoring threshold according to actual conditions, and the detection threshold can be set with a plurality of standard sections or a standard section. In this application, set up to three mark sections, adopt different measures to carry out the moisturizing respectively according to hydraulic difference.
The embodiment of the utility model provides an in, set up first pressure threshold value and be 0.5MPa, work as the water pressure measured value is greater than or equal to during the first pressure threshold value, then the water pressure of explaining municipal water supply pipe is normal, need not start the water pump and carry out the moisturizing, changes step 410. Otherwise, go to step 403.
Step 403: judging whether the water pressure value is smaller than a second pressure threshold value;
in the embodiment of the present invention, the first pressure threshold is set to 0.3MPa, and when the water pressure measurement is not less than the second pressure threshold, it indicates that the municipal water supply pipeline has an under-pressure condition, but the under-pressure condition is not particularly serious, and go to step 404;
when the water pressure measurement is less than the second pressure threshold, then step 405 is performed.
Step 404: sequentially starting the main water replenishing pump;
the controller sends a starting signal to the first main water replenishing pump when the water pressure monitoring average value is smaller than a first pressure threshold value, and if the starting is successful, the first main water replenishing pump is used for replenishing water; if the first main water replenishing pump fails to be started, a second main water replenishing pump is started; if the second main water replenishing pump is started successfully, replenishing water; and if the second main water replenishing pump fails to be started, continuing to start the third main water replenishing pump, and so on.
The controller firstly sends a starting signal to a first main water replenishing pump control cabinet, a contact in the cabinet is used for attracting, the first main water replenishing pump works, if T (T is set by a user and the default value is 1min) in a set time is not fed back by the first main water replenishing pump, the controller immediately starts a second main water replenishing pump, and the like.
However, if all the main water replenishing pumps fail to be started, the standby water replenishing pump needs to be started, and step 407 is performed.
Step 405: judging whether the water pressure value is smaller than a third pressure threshold value;
the third pressure threshold is usually a smaller value, and if the water pressure value is not less than the third pressure threshold but less than the second pressure threshold, it indicates that the pressure loss is serious, go to step 406.
Otherwise go to step 409.
Step 406: simultaneously starting all the main water replenishing pumps;
and when the water pressure value is smaller than the second pressure threshold value, simultaneously starting all the main water replenishing pumps, and replenishing water, wherein in the case, because the municipal water supply pipeline has serious pressure loss, the water replenishing force needs to be increased, and the controller simultaneously sends starting signals to all the main water replenishing pumps.
Step 407: judging whether the main water replenishing pump is started successfully or not;
if the main water replenishing pump is not started successfully in the steps 404 and 406, the fault of the main water replenishing pump is indicated, at this time, the standby water replenishing pump is started, and the step 408 is switched.
Step 408: and starting the spare water replenishing pump.
Step 409: if the water pressure value is smaller than the third pressure threshold value, the water pressure of the municipal water supply pipeline is too low, or water is directly cut off, water cannot be supplemented at all, an alarm signal can be directly sent out, and maintenance personnel are reminded to perform manual intervention.
The mode of early warning is for broadcasting through reputation loudspeaker voice, and reputation loudspeaker arranges user's room on duty in, is connected with the early warning signal of controller, and when the controller sent the early warning, reputation loudspeaker continued to broadcast voice information (voice field is preset by the user, and acquiescence field is that municipal water stops supplying water), until early warning signal disappears.
Step 410: judging whether the water level value is smaller than a water level threshold value or not;
under the water pressure value is all normal, in order to prevent water pressure monitor trouble, the wrong report water pressure value, the embodiment of the utility model provides a still monitor the water level value. If the water pressure is normal but the water level is lower than the water level threshold value, the water pressure monitor is in failure, but the cooling tower is lack of water, and then the step 404 or the step 406 is executed to supplement water.
Through the addition of the water level measurer, the reliability of water replenishing of the system is further ensured on the basis of the original water pressure monitoring, and water replenishing accidents caused by device faults are prevented.
By the way, the embodiment of the utility model provides an keep apart municipal water supply pipe and cooling tower system through increasing the check valve to through set up water pressure monitor in municipal water supply pipe, measure municipal water supply pipe's water pressure, when water pressure is less than first water pressure threshold value, then control main use moisturizing pump to the cooling tower carries out the moisturizing, through this kind of mode, avoided can in time carrying out the moisturizing to the cooling tower when municipal water supply pipe supplies water and changes, solved among the prior art to the water level detection in the cooling tower untimely, cause the water level to cross low warning, and lead to the problem of central air conditioning system trouble. Meanwhile, the cooling tower is automatically replenished with water by automatically starting the water replenishing pump, so that the water replenishing efficiency is greatly improved, and the labor cost is saved. Furthermore, on the basis of water pressure monitoring, the water level of the cooling tower is detected, the problem caused by water supplement failure due to water pressure monitor failure is avoided, and the reliability of a water supply system is ensured.
The embodiment of the utility model provides a it is further, on above-mentioned central air conditioning water charging system's basis, provide a central air conditioning system, adopt above-mentioned central air conditioning water charging system.
It should be noted that unless otherwise indicated, technical or scientific terms used in accordance with embodiments of the present invention shall have the ordinary meaning as understood by those skilled in the art to which embodiments of the present invention pertain.
In the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate the orientation or positional relationship indicated on the drawings, which is only for convenience of describing the embodiments of the present invention and simplifying the description, but does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the embodiments of the present invention.
Furthermore, the technical terms "first", "second", etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. In the description of the embodiments of the present invention, "a plurality" means two or more unless specifically limited otherwise.
In the description of the novel embodiments of the present invention, unless explicitly stated or limited otherwise, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral part; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the embodiments of the present invention can be understood by those skilled in the art according to specific situations.
In describing the novel embodiments of this embodiment, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the first and second features or indirectly contacting the first and second features through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the scope of the embodiments of the present invention, and are intended to be covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present invention is not limited to the particular embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.
Claims (10)
1. The utility model provides a central air conditioning water charging system which characterized in that includes: the water pressure monitoring device comprises a water pressure monitor, a main water replenishing pump, a reservoir, a cooling tower and a controller; one end of the main water replenishing pump is connected with the reservoir through a pipeline, the other end of the main water replenishing pump is connected with the first water filling port of the cooling tower through a pipeline, and the main water replenishing pump is used for pumping water from the reservoir to the cooling tower under the control of the controller;
the second water injection port of the cooling tower is connected with a municipal water supply pipeline, and a check valve is arranged between the municipal water supply pipeline and the second water injection port of the cooling tower and used for preventing water of the cooling tower from flowing back into the municipal water supply pipeline;
the water pressure monitor is arranged on one side, facing the municipal water supply pipeline, of the check valve and is used for monitoring the water pressure of the municipal water supply pipeline and sending a water pressure value to the controller;
and the controller is used for receiving the water pressure value and sending a starting signal to the main water replenishing pump when the water pressure value is smaller than a first pressure threshold value, so as to instruct the main water replenishing pump to pump water from the reservoir and replenish water to the cooling tower.
2. The system of claim 1, wherein the controller sends a stop signal to the primary water replenishing pump to instruct the primary water replenishing pump to stop replenishing water when the water pressure value is greater than or equal to the first pressure threshold value.
3. The system of claim 1, wherein the water pressure monitor periodically measures the water pressure of the municipal water supply line and sends the water pressure value to the controller.
4. The system as claimed in claim 3, wherein the controller is provided with a timer, the controller calculates a water pressure monitoring average value according to the water pressure value received within a preset time period, and controls the main water replenishing pump according to the water pressure monitoring average value.
5. The system of claim 4, wherein the primary water make-up pumps comprise a first primary water make-up pump and at least one second primary water make-up pump;
the first main water replenishing pump and the at least one second main water replenishing pump are respectively connected with the reservoir through one end of a pipeline, and the other end of the pipeline is connected with a first water filling port of the cooling tower;
the first main water replenishing pump and the at least one second main water replenishing pump are respectively connected with the controller;
and the controller sends a starting signal to the first main water replenishing pump when the water pressure monitoring average value is smaller than a first pressure threshold value, and sequentially sends a starting signal to the at least one second main water replenishing pump if the first main water replenishing pump fails to be started.
6. The system of claim 5, wherein the controller is to send activation signals to the first primary water make-up pump and the at least one second primary water make-up pump simultaneously when the monitored average water pressure is less than a second pressure threshold.
7. The system of claim 5 or 6, further comprising a backup water supply pump connected at one end to the reservoir via a pipe and at one end to the cooling tower via a pipe and electrically connected to the controller;
and the controller sends a starting signal to the standby water replenishing pump when the first main water replenishing pump and all the at least one second main water replenishing pump fail to start.
8. The system of claim 7, further comprising an alarm electrically connected to the controller;
when the water pressure monitoring average value is smaller than a third pressure threshold value, the controller sends an alarm control signal to the alarm;
and the alarm gives an alarm according to the alarm control signal controller.
9. The system of claim 2, wherein a water level measurer is provided in the cooling tower for measuring a water level in the cooling tower and sending the water level measurement to the controller;
and the controller sends a starting signal to the main water replenishing pump when the water level measured value is smaller than a water level threshold value and the water pressure value is greater than or equal to the first pressure threshold value.
10. A central air-conditioning system, characterized in that the central air-conditioning water replenishing system according to any one of claims 1-9 is adopted.
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| CN202020608555.5U CN212109085U (en) | 2020-04-21 | 2020-04-21 | Central air conditioning water charging system and central air conditioning system |
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| CN202020608555.5U CN212109085U (en) | 2020-04-21 | 2020-04-21 | Central air conditioning water charging system and central air conditioning system |
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