CN115265241A - Method and system for controlling working state of plate heat exchanger and computer readable storage medium - Google Patents
Method and system for controlling working state of plate heat exchanger and computer readable storage medium Download PDFInfo
- Publication number
- CN115265241A CN115265241A CN202210884982.XA CN202210884982A CN115265241A CN 115265241 A CN115265241 A CN 115265241A CN 202210884982 A CN202210884982 A CN 202210884982A CN 115265241 A CN115265241 A CN 115265241A
- Authority
- CN
- China
- Prior art keywords
- heat exchanger
- temperature
- plate heat
- liquid
- threshold value
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D9/00—Heat-exchange apparatus having stationary plate-like or laminated conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
- F28F27/00—Control arrangements or safety devices specially adapted for heat-exchange or heat-transfer apparatus
Abstract
The invention relates to a method and a system for controlling the working state of a plate heat exchanger and a computer readable storage medium, wherein the method comprises the following steps: s2, collecting the inlet and outlet temperature T of the liquid side of the plate heat exchanger1And T2And obtaining the temperature difference; s3, judging whether the temperature difference is larger than a threshold value or not; if yes, go to step S4; if not, go to step S5; s4, collecting the temperature T of the outlet at the water side3And determining T3Whether greater than a threshold; if not, go to step S6; s5, judging the temperature T of the liquid side outlet2Whether greater than a threshold; if yes, go to step S7; s6, judging the temperature T of the adjacent acquisition periods3Whether the first derivative change is greater than a threshold; if not, increasing the flow of the liquid pump; s7, judging the temperature T of the adjacent acquisition periods2Whether the first derivative change is greater than a threshold; if yes, the flow of the liquid pump is increased. The invention realizes the transportation of the plate heat exchangerAccurate identification and control of row states.
Description
Technical Field
The invention belongs to the technical field of intelligent control, and particularly relates to a method and a system for controlling the working state of a plate heat exchanger and a computer readable storage medium.
Background
And heat exchange is carried out on the liquid cooling liquid through the plate heat exchanger outside the liquid cooling cabinet, so that the liquid cooling liquid is cooled. At present, cooling water is mostly adopted to exchange heat with liquid cooling liquid through a plate heat exchanger. The liquid cooling liquid is called a liquid side inlet and a liquid side outlet at the inlet and the outlet of the plate heat exchanger, and the cooling water is called a water side inlet and a water side outlet at the inlet and the outlet of the plate heat exchanger.
As is well known, the plate heat exchanger has very high heat exchange efficiency, but the gap of the heat exchange space is very small, so that the plate heat exchanger is easy to block and influences the reliability of heat exchange.
Wherein, the heat exchanger is easy to be blocked after the circulating water is scaled. The main reason for scale formation is that water contains calcium, magnesium salts, and the like, which have low solubility, and the solubility of the salts decreases with increasing water temperature, and the salts become insoluble salts. These insoluble salts have a great influence on the heat exchange effect of the heat exchanger.
In addition, the inner wall of the pipeline is rusted and easily blocked when entering the heat exchanger along with the circulating water. Particularly, the rate of rusting increases during the shutdown of the heat exchanger.
At present, pressure sensor or flow sensor through installing on the pipeline detects pressure variation or flow change, and then judges whether plate heat exchanger blocks up, but this kind of judgement mode has hysteresis quality, often blocks up or is about to block up. Therefore, the blockage situation in the working process cannot be accurately detected, so that the early prediction is carried out and relevant actions are taken.
Disclosure of Invention
Based on the above-mentioned disadvantages and shortcomings of the prior art, it is an object of the present invention to at least solve one or more of the above-mentioned problems of the prior art, in other words, to provide a method, a system and a computer-readable storage medium for controlling the operating state of a plate heat exchanger, which satisfy one or more of the above-mentioned needs.
In order to achieve the purpose, the invention adopts the following technical scheme:
a control method of the working condition of a plate heat exchanger, the liquid side inlet and the liquid side outlet of the plate heat exchanger are respectively connected with the inlet and the outlet of the liquid cooling liquid of a liquid cooling cabinet to form a circulation flow path of the liquid cooling liquid, and the circulation flow path of the liquid cooling liquid is provided with a liquid pump; a water side inlet and a water side outlet of the plate heat exchanger are respectively connected with a water outlet and a water inlet of the dry cooler to form a cooling water circulation flow path, a water pump is arranged on the cooling water circulation flow path, and the control method comprises the following steps:
s1, starting a liquid cooling cabinet to operate;
s2, collecting the temperature T of a liquid side inlet of the plate heat exchanger1And the temperature T of the liquid side outlet2And obtaining the temperature difference delta T between the two;
s3, judging whether the temperature difference delta T is larger than a first preset threshold value or not; if yes, go to step S4; if not, go to step S5;
s4, collecting the temperature T of a water side outlet of the plate heat exchanger3And determining the temperature T3Whether the current value is greater than a second preset threshold value; if yes, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to; if not, go to step S6;
s5, judging the temperature T of the liquid side outlet2Whether the current value is greater than a third preset threshold value; if yes, go to step S7; if not, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to;
s6, judging the temperature T of the adjacent acquisition periods3Whether the first derivative change is greater than a fourth preset threshold; if yes, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to; if not, increasing the flow of the liquid pump, and turning to the step S2;
s7, judging the temperature T of the adjacent acquisition periods2Whether the first derivative change is greater than a fifth preset threshold; if yes, increasing the flow of the liquid pump, and turning to the step S2; if not, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to.
Preferably, the first preset threshold is 3-5 ℃, and the second preset threshold is the ambient temperature T0+ B, B is 2-8 deg.C, and the third preset threshold is 40-50 deg.C.
Preferably, the fourth preset threshold and the fifth preset threshold are both-0.1 to 0.1.
Preferably, in steps S6 and S7, the flow rate of the liquid pump is increased by 1 to 10%.
The invention also provides a control method of the working state of the plate heat exchanger, wherein a liquid side inlet and a liquid side outlet of the plate heat exchanger are respectively connected with an inlet and an outlet of the liquid cooling liquid of the liquid cooling cabinet to form a circulating flow path of the liquid cooling liquid, and the circulating flow path of the liquid cooling liquid is provided with a liquid pump; a water side inlet and a water side outlet of the plate heat exchanger are respectively connected with a water outlet and a water inlet of the dry cooler to form a cooling water circulation flow path, a water pump is arranged on the cooling water circulation flow path, and the control method comprises the following steps:
s1, starting a liquid cooling cabinet to operate;
s2, collecting the temperature T of a water side inlet of the plate heat exchanger1And temperature T of water side outlet2And obtaining the temperature difference delta T between the two;
s3, judging whether the temperature difference delta T is larger than a first preset threshold value or not; if yes, go to step S4; if not, go to step S5;
s4, collecting the temperature T of the liquid side outlet of the plate heat exchanger3And determining the temperature T3Whether the threshold value is larger than a second preset threshold value or not; if yes, go to step S6; if not, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to;
s5, judging the temperature T of the water side outlet2Whether the current value is greater than a third preset threshold value; if yes, go to step S7; if not, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to;
s6, judging the temperature T of the adjacent acquisition periods3Whether the first derivative change is greater than a fourth preset threshold; if yes, increasing the flow of the water pump, and turning to the step S2; if not, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to;
s7, judging the temperature T of the adjacent acquisition periods3Whether the first derivative change is greater than a fifth preset threshold; if yes, increasing the flow of the water pump, and turning to the step S2; if not, the heat exchange of the plate heat exchanger is normal, and the step is switched toS2。
As a preferred scheme, the first preset threshold is 2-8 ℃, and the second preset threshold is the ambient temperature T0+ B, B is 2-8 deg.C, and the third preset threshold is 40-50 deg.C.
Preferably, the fourth preset threshold and the fifth preset threshold are both-0.15 to 0.15.
Preferably, in steps S6 and S7, the flow rate of the liquid pump is increased by 1 to 15%.
The invention also provides a control system for the working state of the plate heat exchanger, which applies the control method according to any scheme, and the control system comprises:
a collection module for collecting the temperature T1Temperature T2Temperature difference Δ T, temperature T3Temperature T of adjacent acquisition cycles3First derivative variation of (a), temperature T of adjacent acquisition cycles2A first derivative change of;
the judging module is used for judging steps in the control method to obtain corresponding judging results;
and the control module is used for executing corresponding subsequent steps according to the judgment result.
The present invention also provides a computer-readable storage medium having stored therein instructions which, when run on a computer, cause the computer to execute the control method according to any one of the above aspects.
Compared with the prior art, the invention has the beneficial effects that:
1. the running state of the plate heat exchanger is accurately identified through cross correction of the liquid side temperature and the water side temperature;
2. setting a threshold value according to the temperature difference of an inlet and an outlet of the liquid side, judging whether the heat exchange of the liquid side is abnormal, and respectively combining the outlet temperatures of the liquid side and the water side to judge the heat exchange states of two sides of the heat exchanger;
3. judging whether the outlet temperature is abnormal or not according to the relation between the outlet temperature of the liquid side or the water side and a threshold value, judging whether the temperature is increased or decreased or not according to the first derivative change of the temperature, further judging the running state of the heat exchanger, and accurately identifying;
4. the online timely detection and control of the data center are realized through periodic cycle detection and judgment, and the effectiveness and the timely feedback of intelligent control are improved;
5. according to the invention, the operation state of the heat exchanger is accurately identified through the temperature changes of the plate type heat exchange liquid side and the water side, and which side is blocked is accurately judged and compensated, so that the accurate control and reliability improvement of equipment are realized;
6. the first-order derivative of the liquid outlet temperature of the liquid side or the water side is judged, so that the real-time detection of the temperature and the trend of the temperature change of the temperature are realized, and the prejudgment and the accurate control are realized;
7. the preliminary judgment is carried out through the temperature change of the liquid side and the water side and the temperature difference change of the liquid side and the water side, and the accurate judgment and the control compensation are realized by combining the judgment of the threshold value and the first-order derivative of the threshold value.
Drawings
Fig. 1 is a block diagram of a liquid cooling system according to embodiment 1 of the present invention;
fig. 2 is a flowchart of a method for controlling the operating state of a plate heat exchanger according to embodiment 1 of the present invention;
fig. 3 is a block configuration diagram of a control system of the operating state of the plate heat exchanger according to embodiment 1 of the present invention;
fig. 4 is a flowchart of a method for controlling an operating state of a plate heat exchanger according to embodiment 2 of the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention, the following description will explain the embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
Example 1:
as shown in fig. 1, the liquid cooling system of this embodiment includes a liquid cooling cabinet, a plate heat exchanger (heat exchanger for short) and a dry cooler (dry cooler for short). The liquid side inlet and the liquid side outlet of the plate heat exchanger are respectively connected with the inlet and the outlet of the liquid cooling liquid of the liquid cooling cabinet to form a liquid cooling liquid circulation flow path (liquid path for short), and the liquid cooling liquid circulation flow path is provided with a liquid pump; and a water side inlet and a water side outlet of the plate heat exchanger are respectively connected with a water outlet and a water inlet of the dry cooler to form a cooling water circulation flow path (called a water path for short), and a water pump is arranged on the cooling water circulation flow path. And the circulating liquid cooling function of the liquid cooling liquid is realized by carrying out heat exchange on the cooling water and the liquid cooling liquid. Based on the liquid cooling system of this embodiment, a method for controlling the operating state of the plate heat exchanger will be described in detail below.
As shown in fig. 2, the method for controlling the operating state of the plate heat exchanger in this embodiment includes the following steps:
1. starting the liquid cooling cabinet to operate;
2. detecting the inlet and outlet temperatures T1 and T2 of the liquid side of the heat exchanger and the temperature difference delta T1 of the inlet and outlet temperatures;
3. judging the relationship between the temperature difference between the inlet and the outlet of the liquid side of the heat exchanger and a threshold value A, namely judging whether the temperature difference between the inlet and the outlet of the liquid side of the heat exchanger is greater than the threshold value A (if (f (delta T1) > A,0 and 1), wherein the threshold value A is 3-5 ℃,0 represents that the judgment result is no, and 1 represents that the judgment result is yes, which is the same as the following steps and is not repeated;
4. if delta T1 is larger than A, the temperature difference at the liquid side is higher, the outlet temperature T4 at the water side of the heat exchanger needs to be further detected, and the relation between the outlet temperature at the water side and the threshold value M is judged, namely whether the outlet temperature T4 at the water side is larger than the threshold value M (if (f (T4) > M,0, 1)); wherein M = ambient temperature T0+ B, B is 2-8 ℃.
If the delta T1 is less than or equal to A, indicating that the temperature difference of the liquid side is low, and turning to the step 8;
5. if T4 is larger than M, the outlet temperature of the water side is normal, heat exchange is normal, and the detection of the inlet and outlet temperature and the temperature difference of the liquid side of the heat exchanger is returned continuously; if T4 is less than or equal to M, the outlet temperature of the water side is slightly low, and the relation between the first derivative change of T4 and the threshold value X in the adjacent acquisition period is further detected and judged; the value range of X is-0.1-0.1; the collection period is a period for detecting the temperature, and is, for example, 1 minute.
6. If the first derivative of T4 is larger than the threshold value X, the outlet water temperature change is normal, the heat exchanger is normal, and the detection of the inlet and outlet temperature and the temperature difference of the liquid side of the heat exchanger is returned to continue;
7. if the first derivative of T4 is less than or equal to the threshold value X, the outlet water temperature change is abnormal, and in the descending stage, the liquid side of the heat exchanger is slightly blocked, in order to compensate the flow, the value range of the liquid pump flow + P, P is 1% -10% (preferably 2% -10%), and then the temperature of the inlet and the outlet of the liquid side of the heat exchanger and the temperature difference are continuously detected.
8. Further detecting the liquid side outlet temperature T2 of the heat exchanger, and judging the relation between the liquid side outlet temperature T2 and a threshold value N, namely judging whether the liquid side outlet temperature T2 is greater than the threshold value N (if (f (T2) > N,0, 1)); wherein N is 40-50 ℃;
9. if T2 is less than or equal to N, the temperature of the outlet at the liquid side is normal, heat exchange is normal, and the detection of the temperature of the inlet and the outlet at the liquid side of the heat exchanger and the temperature difference is returned to continue;
10. if T2 is larger than N, the liquid side outlet temperature is higher, and then the relation between the first derivative of the temperature T2 of the adjacent acquisition period and the threshold value X is judged, namely whether the first derivative of the temperature T2 of the adjacent acquisition period is larger than the threshold value X (if (f (T2)) > X,0, 1)) or not is judged, wherein X is-0.1-0.1;
11. if the first derivative of T2 is less than or equal to the threshold value X, the outlet water temperature change is normal, the heat exchanger is normal, and the detection of the inlet and outlet temperature and the temperature difference of the liquid side of the heat exchanger is returned to continue;
12. if the first derivative of T4 is larger than the threshold value X, the change of the outlet temperature of the liquid side is abnormal, and in the rising stage, the liquid side of the heat exchanger is slightly blocked, in order to make up for the flow, the value range of the flow of the liquid pump + Q and Q is 1% -10%, and the detection of the inlet and outlet temperature and the temperature difference of the liquid side of the heat exchanger is returned to continue.
Corresponding to the above-mentioned control method for the working state of the plate heat exchanger in this embodiment, as shown in fig. 3, this embodiment further provides a control system for the working state of the plate heat exchanger, which includes a setting module, an acquisition module, a judgment module, and a control module.
The setting module is used for setting all threshold values, and setting of the threshold values can be adjusted freely.
The acquisition module is used for acquiring all detected temperatures and first derivative changes of the temperatures, and specifically comprises a temperature T1, a temperature T2, a temperature difference delta T1, a temperature T4, a first derivative change of the temperature T4 of an adjacent acquisition period, and a first derivative change of the temperature T2 of the adjacent acquisition period;
the judging module is used for executing each judging step in the control method to obtain a corresponding judging result;
the control module is used for executing corresponding subsequent steps according to the judgment result.
For the specific execution process of the above modules, reference may be made to the detailed description of the above control method, which is not described herein again.
The present embodiment also provides a computer-readable storage medium, in which instructions are stored, and when the instructions are executed on a computer, the instructions cause the computer to execute the control method according to the present embodiment.
Example 2:
the method for controlling the working state of the plate heat exchanger in the embodiment is different from that in embodiment 1 in that:
as shown in fig. 4, the method for controlling the operating state of the plate heat exchanger in this embodiment includes the following steps:
1. starting the liquid cooling cabinet to operate;
2. detecting inlet and outlet temperatures T3 and T4 of a water side of the heat exchanger and a temperature difference delta T2 of the inlet and outlet temperatures;
3. judging the relation between the temperature difference between the water side inlet and outlet of the heat exchanger and a threshold value B, namely judging whether the temperature difference between the water side inlet and outlet of the heat exchanger is greater than the threshold value B (if (f (delta T2) > B,0, 1), wherein the threshold value B is 2-8 ℃,0 represents that the judgment result is no, 1 represents that the judgment result is yes, and the following steps are not repeated;
4. if delta T2 is larger than B, the temperature difference of the water side is higher, the outlet temperature T2 of the liquid side of the heat exchanger needs to be further detected, and the relation between the outlet temperature T2 of the liquid side and the threshold value M1 is judged, namely whether the outlet temperature T2 of the liquid side is larger than the threshold value M1 (if (f (T2) > M1,0, 1)); wherein M1 is 40-50 ℃. If the delta T2 is less than or equal to B, the temperature difference of the water side is slightly low, and the step 6 is carried out;
if T2 is less than or equal to M1, the outlet temperature of the liquid side is normal, heat exchange is normal, and the temperature of the inlet and the outlet of the water side of the heat exchanger and the temperature difference are continuously detected;
if T2 is more than M1, indicating that the outlet temperature of the liquid side is higher, further detecting and judging the relation between the first-order derivative change of T2 and the threshold value Y in adjacent acquisition periods, namely judging whether the first-order derivative change of T2 is more than the threshold value Y; y is-0.15-0.15;
5. if the first derivative of T2 is greater than the threshold value Y, the change of the outlet temperature of the liquid side is abnormal, the water side of the heat exchanger is dirty and blocked, the flow of the water pump needs to be improved, the heat exchange performance is improved, namely the flow of the water pump is improved by W, the value range of W is 1% -15% (preferably 2% -15%), and the temperature of the inlet and the outlet of the water side of the heat exchanger and the temperature difference of the inlet and the outlet of the water side of the heat exchanger are returned to be continuously detected;
if the first derivative of T2 is less than or equal to the threshold value Y, the change of the outlet water temperature at the liquid side is normal, and the heat exchanger is normal at the descending stage, and the temperature of the inlet and the outlet at the water side of the heat exchanger and the temperature difference are continuously detected;
6. further judging the relation between the water side outlet temperature T4 and the threshold value N1, namely judging whether the water side outlet temperature T4 is greater than the threshold value N1 (if (f (T4) > N1,0, 1)); wherein, N1= ambient temperature T0+ B, B is 2-8 ℃;
if T4 is less than or equal to N1, the outlet temperature of the water side is normal, heat exchange is normal, and the temperature difference of the inlet and the outlet of the water side of the heat exchanger are continuously detected;
if T4 is larger than N1, the outlet temperature of the water side is relatively high, the relation between the first derivative change of the outlet temperature T2 of the liquid side in the adjacent acquisition period and a threshold value X is further detected and judged, wherein X is-0.15-0.15, and is preferably-0.1-0.1;
7. if the first derivative of T2 is larger than the threshold value X, the change of the outlet temperature of the liquid side is abnormal, the water side of the heat exchanger is dirty and blocked, the flow of the water pump needs to be improved, and the heat exchange performance needs to be improved, namely the flow of the water pump is improved by V, and the value range of V is 1% -15%; returning to detect the temperature of the inlet and the outlet of the water side of the heat exchanger and the temperature difference of the inlet and the outlet;
if the first derivative of T2 is less than or equal to the threshold value X, the outlet water temperature changes normally, and if the outlet water temperature changes normally in the descending stage, the heat exchanger is normal, and the inlet and outlet water temperature and the temperature difference of the inlet and outlet water side of the heat exchanger are detected.
The control system for the working state of the plate heat exchanger in the embodiment can refer to embodiment 1;
a computer-readable storage medium of the present embodiment, in which instructions are stored, and when the instructions are executed on a computer, the instructions cause the computer to execute the control method according to the present embodiment.
The foregoing has outlined rather broadly the preferred embodiments and principles of the present invention and it will be appreciated that those skilled in the art may devise variations of the present invention that are within the spirit and scope of the appended claims.
Claims (10)
1. A control method for the working state of a plate heat exchanger is characterized in that a liquid side inlet and a liquid side outlet of the plate heat exchanger are respectively connected with an inlet and an outlet of liquid cooling liquid of a liquid cooling cabinet to form a liquid cooling liquid circulation flow path, and a liquid pump is arranged in the liquid cooling liquid circulation flow path; the water side inlet and the water side outlet of the plate heat exchanger are respectively connected with the water outlet and the water inlet of the dry cooler to form a cooling water circulation flow path, and a water pump is arranged on the cooling water circulation flow path, and the control method is characterized by comprising the following steps:
s1, starting up a liquid cooling cabinet to operate;
s2, collecting the temperature T of a liquid side inlet of the plate heat exchanger1And the temperature T of the liquid side outlet2And obtaining the temperature difference delta T between the two;
s3, judging whether the temperature difference delta T is larger than a first preset threshold value or not; if yes, go to step S4; if not, go to step S5;
s4, collecting the temperature T of a water side outlet of the plate heat exchanger3And determining the temperature T3Whether the current value is greater than a second preset threshold value; if yes, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to; if not, go to step S6;
s5, judging the temperature T of the liquid side outlet2Whether the threshold value is larger than a third preset threshold value; if yes, go to step S7; if not, the heat exchange of the plate heat exchanger is normal, and the step is switched toStep S2;
s6, judging the temperature T of adjacent acquisition periods3Whether the first derivative change is greater than a fourth preset threshold; if yes, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to; if not, increasing the flow of the liquid pump, and turning to the step S2;
s7, judging the temperature T of adjacent acquisition periods2Whether the first derivative change is greater than a fifth preset threshold; if yes, increasing the flow of the liquid pump, and turning to the step S2; if not, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to.
2. A method for controlling the operating condition of a plate heat exchanger according to claim 1, wherein the first predetermined threshold value is 3-5 ℃ and the second predetermined threshold value is the ambient temperature T0+ B and B are 2-8 ℃, and the third preset threshold value is 40-50 ℃.
3. A method for controlling the operating condition of a plate heat exchanger according to claim 1, wherein the fourth predetermined threshold value and the fifth predetermined threshold value are both-0.1 to 0.1.
4. A method for controlling the operating condition of a plate heat exchanger according to claim 1, wherein the flow rate of the liquid pump is increased by 1-10% in steps S6 and S7.
5. A control method of the working condition of a plate heat exchanger, the liquid side inlet and the liquid side outlet of the plate heat exchanger are respectively connected with the inlet and the outlet of the liquid cooling liquid of a liquid cooling cabinet to form a circulation flow path of the liquid cooling liquid, and the circulation flow path of the liquid cooling liquid is provided with a liquid pump; the water side inlet and the water side outlet of the plate heat exchanger are respectively connected with the water outlet and the water inlet of the dry cooler to form a cooling water circulation flow path, and a water pump is arranged on the cooling water circulation flow path, and the control method is characterized by comprising the following steps of:
s1, starting up a liquid cooling cabinet to operate;
s2, collecting the temperature T of a water side inlet of the plate heat exchanger1Water mixing sideTemperature T of the outlet2And obtaining the temperature difference delta T between the two;
s3, judging whether the temperature difference delta T is larger than a first preset threshold value or not; if yes, go to step S4; if not, go to step S5;
s4, collecting the temperature T of the liquid side outlet of the plate heat exchanger3And determining the temperature T3Whether the threshold value is larger than a second preset threshold value or not; if yes, go to step S6; if not, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to;
s5, judging the temperature T of the water side outlet2Whether the threshold value is larger than a third preset threshold value; if yes, go to step S7; if not, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to;
s6, judging the temperature T of the adjacent acquisition periods3Whether the first derivative change is greater than a fourth preset threshold; if yes, increasing the flow of the water pump, and turning to the step S2; if not, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to;
s7, judging the temperature T of the adjacent acquisition periods3Whether the first derivative change is greater than a fifth preset threshold; if yes, increasing the flow of the water pump, and turning to the step S2; if not, the heat exchange of the plate heat exchanger is normal, and the step S2 is switched to.
6. A method for controlling the operating condition of a plate heat exchanger according to claim 5, wherein the first predetermined threshold value is 2-8 ℃ and the second predetermined threshold value is the ambient temperature T0+ B and B are 2-8 ℃, and the third preset threshold value is 40-50 ℃.
7. A method for controlling an operating condition of a plate heat exchanger according to claim 1, wherein the fourth predetermined threshold value and the fifth predetermined threshold value are both-0.15 to 0.15.
8. A method for controlling the operating condition of a plate heat exchanger according to claim 1, wherein the flow rate of the liquid pump is increased by 1-15% in steps S6 and S7.
9. A control system for the operating condition of a plate heat exchanger, applying the control method according to any one of claims 1 to 8, wherein the control system comprises:
a collection module for collecting the temperature T1Temperature T2Temperature difference Δ T, temperature T3Temperature T of adjacent acquisition cycles3First derivative variation, temperature T of adjacent acquisition cycles2A first derivative change of;
the judging module is used for judging steps in the control method to obtain corresponding judging results;
and the control module is used for executing corresponding subsequent steps according to the judgment result.
10. A computer-readable storage medium having instructions stored therein, which when run on a computer, cause the computer to perform the control method of any one of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210884982.XA CN115265241A (en) | 2022-07-26 | 2022-07-26 | Method and system for controlling working state of plate heat exchanger and computer readable storage medium |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210884982.XA CN115265241A (en) | 2022-07-26 | 2022-07-26 | Method and system for controlling working state of plate heat exchanger and computer readable storage medium |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115265241A true CN115265241A (en) | 2022-11-01 |
Family
ID=83769196
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210884982.XA Pending CN115265241A (en) | 2022-07-26 | 2022-07-26 | Method and system for controlling working state of plate heat exchanger and computer readable storage medium |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115265241A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116182441A (en) * | 2023-02-14 | 2023-05-30 | 浙江康盛热交换器有限公司 | Energy storage water chilling unit and detection control method for plate heat exchanger of energy storage water chilling unit |
| CN117529066A (en) * | 2024-01-04 | 2024-02-06 | 浙江康盛热交换器有限公司 | Cooling unit control method and device, electronic equipment and computer readable medium |
-
2022
- 2022-07-26 CN CN202210884982.XA patent/CN115265241A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116182441A (en) * | 2023-02-14 | 2023-05-30 | 浙江康盛热交换器有限公司 | Energy storage water chilling unit and detection control method for plate heat exchanger of energy storage water chilling unit |
| CN117529066A (en) * | 2024-01-04 | 2024-02-06 | 浙江康盛热交换器有限公司 | Cooling unit control method and device, electronic equipment and computer readable medium |
| CN117529066B (en) * | 2024-01-04 | 2024-04-09 | 浙江康盛热交换器有限公司 | Cooling unit control method and device, electronic equipment and computer readable medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN115265241A (en) | Method and system for controlling working state of plate heat exchanger and computer readable storage medium | |
| CN101776258B (en) | For controlling the system and method for the liquid level in container | |
| CN103968554B (en) | The progress control method of double-compressor heat pump water heating and system | |
| EP3553417B1 (en) | Refrigerant leakage detection for air cooling heat pump | |
| CN102183699B (en) | Method for model mismatching detection and positioning of multivariate predictive control system in chemical process | |
| CN105042799A (en) | Air conditioner control method and device and air conditioner | |
| CN111780426A (en) | Water flow control system and control method of gas water heater | |
| CN108731195A (en) | A kind of temperature control method of water and device | |
| CN117193164A (en) | Fault monitoring method and system of numerical control machine tool | |
| WO2020107721A1 (en) | Control method for heat-pump water heater, and heat-pump water heater | |
| CN115135117A (en) | Energy-saving control method and system for liquid cooling equipment and computer readable storage medium | |
| JP4857051B2 (en) | Refrigerator equipment operation method and equipment comprising a refrigerator | |
| CN116772285B (en) | Intelligent building heating load safety real-time monitoring method | |
| CN116182441A (en) | Energy storage water chilling unit and detection control method for plate heat exchanger of energy storage water chilling unit | |
| CN110682821B (en) | Method for solving problem of stopping charging of vehicle end caused by power reduction of charging pile | |
| CN116774796A (en) | Operation test parameter tuning method and system for VPX equipment based on high-temperature environment | |
| CN111474971B (en) | Control method for preventing excessive low water flow and water supply machine | |
| CN113108444B (en) | Expansion valve opening degree control method and device and air conditioner | |
| CN115175532A (en) | High-load control method and system for cooling equipment of container data center | |
| CN112443985B (en) | Circulating preheating control method, device and system for water heater | |
| JP4914141B2 (en) | Cogeneration system operation control device | |
| CN108287006B (en) | Slight leakage monitoring method of valve cooling system based on temperature compensation and least square method | |
| CN117234166B (en) | Fault perception operation and maintenance method and system for equipment | |
| CN114992795B (en) | Control method and control device for compressor, air conditioner and readable storage medium | |
| CN116659161A (en) | Energy-saving evaluation method for circulating cooling water system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |