Condensation control method and system for tubular condenser

Abstract

The invention relates to the technical field of condenser control, and discloses a condensation control method and system for a tubular condenser, and the method comprises the steps: pre-deploying a detection device corresponding to a to-be-controlled parameter in the tubular condenser, and obtaining the to-be-controlled parameter of the tubular condenser; according to the to-be-controlled parameters, whether the tubular condenser reaches a preset condensation standard or not is judged; when the tubular condenser does not reach the preset condensation standard, corresponding control modes are determined based on the to-be-controlled parameters, and the control modes comprise the first control mode, the second control mode and the third control mode; after the tubular condenser is controlled, whether the tubular condenser reaches a preset condensation standard or not is judged, and if yes, control is ended; if not, the current to-be-controlled parameters are obtained, the corresponding control mode is determined again on the basis of the current to-be-controlled parameters, and the phenomena that the temperature of the condensing agent is abnormal and the internal pressure of the condenser is abnormal in the condensation process are effectively solved, so that the optimal condensation effect of the tubular condenser is maintained for a long time.

Description

Technical Field

[0001] The present invention relates to the technical field of condenser control, and in particular to a condensation control method and system for a shell-and-tube condenser. Background Art

[0002] Shell and tube condensers are widely used in heat recovery and condensation processes in chemical, pharmaceutical, food, petroleum, electric power, metallurgy, light industry and other industries. As an important heat exchange equipment, the development of shell and tube condensers is closely related to the needs of industrial production and technological progress. Early heat exchange equipment was relatively simple. With the acceleration of industrialization, the demand for efficient and reliable heat exchange equipment is increasing.

[0003] However, in actual application, the traditional shell-and-tube condenser control method cannot effectively maintain the optimal condensation effect of the shell-and-tube condenser, resulting in the shell-and-tube condenser being prone to low condensation efficiency during use. In order to enable the shell-and-tube condenser to maintain the optimal condensation effect and improve the condensation efficiency, a more comprehensive shell-and-tube condenser control method is needed to achieve a better condensation efficiency of the shell-and-tube condenser. Summary of the invention

[0004] The embodiment of the present invention provides a condensation control method and system for a shell-and-tube condenser, which is used to solve the technical problems in the prior art that the shell-and-tube condenser has poor condensation efficiency, cannot effectively solve the abnormal refrigerant temperature during the condensation process, and the abnormal internal pressure of the condenser, making it difficult to maintain the optimal condensation effect of the shell-and-tube condenser for a long time.

[0005] In order to achieve the above object, the present invention provides a condensation control method for a shell-and-tube condenser, comprising:

[0006] Pre-deploying a detection device corresponding to the parameter to be controlled in the shell-and-tube condenser, and acquiring the parameter to be controlled of the shell-and-tube condenser based on the detection device;

[0007] According to the parameters to be controlled, determining whether the shell-and-tube condenser reaches a preset condensation standard;

[0008] When the shell-and-tube condenser does not reach the preset condensation standard, a corresponding control mode is determined based on the parameter to be controlled, wherein the control mode includes: a first control mode, a second control mode and a third control mode;

[0009] After controlling the shell-and-tube condenser, determine whether the shell-and-tube condenser reaches the preset condensation standard. If so, end the control; if not, obtain the current parameters to be controlled, and re-determine the corresponding control mode based on the current parameters to be controlled.

[0010] Furthermore, the parameters to be controlled include:

[0011] The temperature parameter to be controlled of the shell and tube condenser and the pressure parameter to be controlled of the shell and tube condenser;

[0012] The temperature parameters to be controlled also include: the internal condensing agent temperature of the shell-and-tube condenser;

[0013] The pressure parameter to be controlled also includes: the current internal pressure of the shell and tube condenser.

[0014] Further, when the shell-and-tube condenser does not reach the preset condensation standard, determining the corresponding control mode based on the parameter to be controlled includes:

[0015] When the temperature parameter to be controlled is greater than a preset temperature threshold, and the pressure parameter to be controlled satisfies a preset pressure range, the first control mode is adopted;

[0016] When the pressure parameter to be controlled does not satisfy the preset pressure range, and the temperature parameter to be controlled is less than or equal to the preset temperature threshold, adopting the second control mode;

[0017] When the temperature parameter to be controlled is greater than the preset temperature threshold, and the pressure parameter to be controlled does not satisfy the preset pressure range, the third control mode is adopted.

[0018] Further, when the temperature parameter to be controlled is greater than a preset temperature threshold, and the pressure parameter to be controlled satisfies a preset pressure range, the first control mode is adopted, including:

[0019] Acquire the historical operation records of the shell-and-tube condenser, wherein the historical operation records include temperature safety operation records and temperature risk operation records;

[0020] When the historical temperature to-be-controlled parameter in the historical operation record is less than or equal to the preset temperature threshold, the historical operation record is recorded as a temperature safety operation record;

[0021] When the historical temperature to-be-controlled parameter in the historical operation record is greater than the preset temperature threshold, the historical operation record is recorded as a temperature risk operation record;

[0022] Extract the historical risk control start time and the historical risk control end time of each temperature risk operation record, and calculate the historical risk control duration;

[0023] A risk operation record curve is constructed by taking the temperature difference between the historical temperature to-be-controlled parameter of the risk operation record and the preset temperature threshold as the ordinate, and taking the risk control time corresponding to each temperature risk operation record as the abscissa;

[0024] Determine the slope corresponding to each point and calculate the mean slope of all slopes;

[0025] Calculating the slope ratio of each slope to the slope mean, and determining a maximum slope ratio from all the slope ratios;

[0026] Counting a first number of safety operation records, and counting a second number of risk operation records;

[0027] Extract a maximum temperature difference value and a minimum temperature difference value from all temperature difference values;

[0028] Calculating a historical abnormal temperature control coefficient of the shell-and-tube condenser according to the slope mean, the maximum slope ratio, the maximum temperature difference and the minimum temperature difference;

[0029] The rotation speed of the circulating water pump and the internal water flow rate of the shell-and-tube condenser are controlled based on the historical abnormal temperature control coefficient.

[0030] Further, when calculating the historical abnormal temperature control coefficient of the shell-and-tube condenser according to the slope mean, the maximum slope ratio, the maximum temperature difference and the minimum temperature difference, it includes:

[0031]

[0032] Among them, a is the historical abnormal temperature control coefficient, p g is the maximum temperature difference, p1 is the minimum temperature difference, r is the coefficient, which is 0.45, t1 is the maximum slope ratio, and t2 is the slope mean.

[0033] Further, the controlling of the circulating water pump speed and the internal water flow of the shell-and-tube condenser based on the historical abnormal temperature control coefficient includes:

[0034] Get the current circulating water pump speed and the current internal water flow of the shell-and-tube condenser;

[0035] Presetting a first preset historical abnormal temperature control coefficient and a second preset historical abnormal temperature control coefficient; wherein the first preset historical abnormal temperature control coefficient is smaller than the second preset historical abnormal temperature control coefficient;

[0036] Presetting a first preset speed increase coefficient, a second preset speed increase coefficient, and a third preset speed increase coefficient;

[0037] Presetting a first preset water flow increase coefficient, a second preset water flow increase coefficient and a third preset water flow increase coefficient;

[0038] When the historical abnormal temperature control coefficient is less than the first preset historical abnormal temperature control coefficient, the first preset speed increase coefficient is selected to increase the current circulating water pump speed, and the first preset water flow increase coefficient is selected to increase the current internal water flow;

[0039] When the historical abnormal temperature control coefficient is greater than or equal to the first preset historical abnormal temperature control coefficient and less than the second preset historical abnormal temperature control coefficient, the second preset increase coefficient is selected to increase the current circulating water pump speed, and the second preset water flow increase coefficient is selected to increase the current internal water flow;

[0040] When the historical abnormal temperature control coefficient is greater than or equal to the second preset historical abnormal temperature control coefficient, the third preset increase coefficient is selected to increase the current circulating water pump speed, and the third preset water flow increase coefficient is selected to increase the current internal water flow.

[0041] Further, when the pressure parameter to be controlled does not satisfy the preset pressure range, and the temperature parameter to be controlled is less than or equal to the preset temperature threshold, the second control mode is adopted, further comprising:

[0042] Obtaining the minimum value and the maximum value of the preset pressure range;

[0043] Calculate the middle value of the preset pressure range and record it as the pressure stability value;

[0044] When the pressure parameter to be controlled is lower than the minimum value of the preset pressure range, the second control unit controls the positive pressure air pump to start, detects the current pressure value of the shell-and-tube condenser in real time, and turns off the positive pressure air pump when the current pressure value reaches the pressure stable value;

[0045] When the pressure parameter to be controlled is higher than the maximum value of the preset pressure range, the second control unit controls the negative pressure pump to start, and detects the current pressure value of the shell and tube condenser in real time. When the current pressure value reaches the pressure stability value, the negative pressure pump is turned off.

[0046] Further, when the temperature parameter to be controlled is greater than the preset temperature threshold, and the pressure parameter to be controlled does not satisfy the preset pressure range, a third control mode is adopted, further comprising:

[0047] When the temperature parameter to be controlled does not satisfy the preset range, and the pressure parameter to be controlled does not satisfy the preset pressure range, the third control unit controls the first control unit and the second control unit, and controls the shell-and-tube condenser at the same time.

[0048] In order to achieve the above object, the present invention also provides a condensation control system for a shell-and-tube condenser, comprising:

[0049] Parameter acquisition module: pre-deploy a detection device corresponding to the parameter to be controlled in the shell-and-tube condenser, and acquire the parameter to be controlled of the shell-and-tube condenser based on the detection device;

[0050] A judgment module: judging whether the shell-and-tube condenser reaches a preset condensation standard according to the parameters to be controlled;

[0051] Control module: when the shell-and-tube condenser does not reach the preset condensation standard, determine the corresponding control mode based on the parameter to be controlled, wherein the control mode includes: a first control mode, a second control mode and a third control mode;

[0052] Risk elimination module: after controlling the shell-and-tube condenser, determine whether the shell-and-tube condenser reaches the preset condensation standard, if so, end the control; if not, obtain the current parameters to be controlled, and re-determine the corresponding control mode based on the current parameters to be controlled.

[0053] Compared with the prior art, the present invention has the following beneficial effects:

[0054] The present invention discloses a condensation control method and system for a shell and tube condenser, which performs more rigorous control on the temperature control of the condenser in the shell and tube condenser, collects the condenser temperature inside the shell and tube condenser in real time, and accurately adjusts the rotation speed of a circulating water pump according to the current temperature of the condenser, so that the condenser water flow rate inside the shell and tube condenser can be quickly switched, so that the condenser temperature can be quickly restored to a preset ideal range, and at the same time, the internal pressure environment of the shell and tube condenser is regulated in real time to avoid large changes in the internal pressure of the shell and tube condenser during a long condensation process, thereby ensuring that the preset pressure environment can be continuously maintained during the condensation process, and ensuring that the condenser can maintain an optimal heat exchange efficiency even when working for a long time. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present invention. Moreover, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:

[0056] Figure 1 A schematic flow chart of a condensation control method for a shell-and-tube condenser in an embodiment of the present invention is shown.

[0057] Figure 2 A structural schematic diagram of a condensation control system for a shell-and-tube condenser in an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0058] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0059] In the description of the present application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0060] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise specified, "plurality" means two or more.

[0061] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0062] The following is a description of preferred embodiments of the present invention with reference to the accompanying drawings.

[0063] like Figure 1 As shown, an embodiment of the present invention discloses a condensation control method for a shell-and-tube condenser, comprising:

[0064] S110: pre-deploying a detection device corresponding to the parameter to be controlled in the shell-and-tube condenser, and obtaining the parameter to be controlled of the shell-and-tube condenser based on the detection device;

[0065] In this embodiment, the parameters to be controlled include:

[0066] The temperature parameter to be controlled of the shell and tube condenser and the pressure parameter to be controlled of the shell and tube condenser;

[0067] The temperature parameters to be controlled also include: the internal condensing agent temperature of the shell-and-tube condenser;

[0068] The pressure parameter to be controlled also includes: the current internal pressure of the shell and tube condenser.

[0069] The beneficial effect of the above technical solution is: by dually adjusting the temperature and pressure of the shell-and-tube condenser, the condensation efficiency of the shell-and-tube condenser is made more superior. While adjusting the temperature, the internal pressure changes of the condenser in the shell and tube are taken into account to ensure the optimization of the working state of the shell-and-tube condenser.

[0070] S120: judging whether the shell-and-tube condenser reaches a preset condensation standard according to the parameters to be controlled;

[0071] S130: When the shell-and-tube condenser does not reach a preset condensation standard, a corresponding control mode is determined based on the parameter to be controlled, wherein the control modes include: a first control mode, a second control mode and a third control mode;

[0072] In this embodiment, when the shell-and-tube condenser does not reach the preset condensation standard, the corresponding control mode is determined based on the parameters to be controlled, including:

[0073] When the temperature parameter to be controlled is greater than the preset temperature threshold, and the pressure parameter to be controlled meets the preset pressure range, the first control mode is adopted;

[0074] When the pressure parameter to be controlled does not meet the preset pressure range, and the temperature parameter to be controlled is less than or equal to the preset temperature threshold, the second control mode is adopted;

[0075] When the temperature parameter to be controlled is greater than a preset temperature threshold and the pressure parameter to be controlled does not meet the preset pressure range, the third control mode is adopted.

[0076] In this embodiment, when the temperature parameter to be controlled is lower than the preset temperature threshold and the pressure parameter to be controlled is within the preset pressure range, it is recorded as meeting the preset condensation standard; when at least one of the temperature parameter to be controlled and the pressure parameter to be controlled does not meet the preset condition, it is recorded as not meeting the preset condensation standard.

[0077] The beneficial effect of the above technical solution is: different control modules are used to independently control the temperature and pressure, thereby avoiding the phenomenon of low control accuracy caused by insufficient computing power when a single control module handles temperature control and pressure control at the same time.

[0078] In some embodiments of the present application, when the temperature parameter to be controlled is greater than a preset temperature threshold and the pressure parameter to be controlled satisfies a preset pressure range, a first control mode is adopted, including:

[0079] Obtain the historical operation records of the shell-and-tube condenser, wherein the historical operation records include temperature safety operation records and temperature risk operation records;

[0080] When the historical temperature to-be-controlled parameter in the historical operation record is less than or equal to the preset temperature threshold, the historical operation record is recorded as a temperature safety operation record;

[0081] When the historical temperature to-be-controlled parameter in the historical operation record is greater than the preset temperature threshold, the historical operation record is recorded as a temperature risk operation record;

[0082] Extract the historical risk control start time and historical risk control end time of each temperature risk operation record, and calculate the historical risk control duration;

[0083] A risk operation record curve is constructed by taking the temperature difference between the historical temperature parameter to be controlled and the preset temperature threshold value in the risk operation record as the ordinate, and taking the risk control time corresponding to each temperature risk operation record as the abscissa;

[0084] Determine the slope corresponding to each point and calculate the mean slope of all slopes;

[0085] Calculate the slope ratio of each slope to the slope mean, and determine the maximum slope ratio from all slope ratios;

[0086] Count the first number of safe operation records, and count the second number of risk operation records;

[0087] Extract a maximum temperature difference value and a minimum temperature difference value from all temperature difference values;

[0088] Calculate the historical abnormal temperature control coefficient of the shell-and-tube condenser according to the slope mean, the maximum slope ratio, the maximum temperature difference and the minimum temperature difference;

[0089] The speed of the circulating water pump and the internal water flow of the shell-and-tube condenser are controlled based on the historical abnormal temperature control coefficient.

[0090] In this embodiment, a risk operation record curve is drawn based on historical abnormal temperatures and risk control duration, and the time required for different abnormal temperatures to be controlled below a preset threshold is observed.

[0091] The beneficial effect of the above technical solution is: the present invention calculates the historical abnormal temperature control coefficient of the shell and tube condenser according to the slope mean, the maximum slope ratio, the maximum temperature difference and the minimum temperature difference, and can comprehensively reflect the historical condensation difficulty of the shell and tube condenser through the historical abnormal temperature control coefficient, further ensure the control accuracy of the circulating water pump speed and the internal water flow rate, and avoid repeated adjustment.

[0092] In some embodiments of the present application, when calculating the historical abnormal temperature control coefficient of the shell-and-tube condenser according to the slope mean, the maximum slope ratio, the maximum temperature difference and the minimum temperature difference, it includes:

[0093]

[0094] Among them, a is the historical abnormal temperature control coefficient, p g is the maximum temperature difference, p1 is the minimum temperature difference, r is the coefficient, which is 0.45, t1 is the maximum slope ratio, and t2 is the slope mean.

[0095] In some embodiments of the present application, the speed of the circulating water pump and the internal water flow rate of the shell-and-tube condenser are controlled based on the historical abnormal temperature control coefficient, including:

[0096] Get the current circulating water pump speed and the current internal water flow of the shell-and-tube condenser;

[0097] Presetting a first preset historical abnormal temperature control coefficient and a second preset historical abnormal temperature control coefficient; wherein the first preset historical abnormal temperature control coefficient is smaller than the second preset historical abnormal temperature control coefficient;

[0098] Presetting a first preset speed increase coefficient, a second preset speed increase coefficient, and a third preset speed increase coefficient;

[0099] The first preset speed increase coefficient is smaller than the second preset speed increase coefficient, the second preset speed increase coefficient is smaller than the third preset speed increase coefficient, and both are greater than 1.

[0100] Presetting a first preset water flow increase coefficient, a second preset water flow increase coefficient and a third preset water flow increase coefficient;

[0101] The first preset water flow increase coefficient is smaller than the second preset water flow increase coefficient, the second preset water flow increase coefficient is smaller than the third preset water flow increase coefficient, and both are greater than 1.

[0102] When the historical abnormal temperature control coefficient is less than the first preset historical abnormal temperature control coefficient, the first preset speed increase coefficient is selected to increase the current circulating water pump speed, and the first preset water flow increase coefficient is selected to increase the current internal water flow;

[0103] When the historical abnormal temperature control coefficient is greater than or equal to the first preset historical abnormal temperature control coefficient and less than the second preset historical abnormal temperature control coefficient, the second preset increase coefficient is selected to increase the current circulating water pump speed, and the second preset water flow increase coefficient is selected to increase the current internal water flow;

[0104] When the historical abnormal temperature control coefficient is greater than or equal to the second preset historical abnormal temperature control coefficient, the third preset increase coefficient is selected to increase the current circulating water pump speed, and the third preset water flow increase coefficient is selected to increase the current internal water flow.

[0105] In this embodiment, the product value of the preset speed increase coefficient and the current circulating water pump speed is used as the increased circulating water pump speed, and the product value of the preset water flow increase coefficient and the current internal water flow is used as the internal water flow target value; after the circulating water pump speed is increased, the internal water flow of the shell and tube condenser increases accordingly. By selecting different preset speed increase coefficients of the circulating water pump, the internal water flow reaches the corresponding water flow target value, thereby achieving cooling treatment when the internal condensing agent temperature is too high.

[0106] The beneficial effect of the above technical solution is that the smaller the historical abnormal temperature control coefficient is, the smaller the control difficulty is. By comparing the relationship between the historical abnormal temperature control coefficient and a plurality of preset historical abnormal temperature control coefficients, the abnormal temperature control coefficients are classified into the difficulty of control, and different increase coefficients are used to adjust each category, so as to achieve faster cooling processing.

[0107] In some embodiments of the present application, when the pressure parameter to be controlled does not satisfy the preset pressure range, and the temperature parameter to be controlled is less than or equal to the preset temperature threshold, the second control mode is adopted, further comprising:

[0108] Get the minimum and maximum values ​​of the preset pressure range;

[0109] Calculate the middle value of the preset pressure range and record it as the pressure stability value;

[0110] When the pressure parameter to be controlled is lower than the minimum value of the preset pressure range, the second control unit controls the positive pressure air pump to start, and detects the current pressure value of the shell and tube condenser in real time. When the current pressure value reaches the pressure stable value, the positive pressure air pump is turned off;

[0111] When the pressure parameter to be controlled is higher than the maximum value of the preset pressure range, the second control unit controls the negative pressure vacuum pump to start, and detects the current pressure value of the shell and tube condenser in real time. When the current pressure value reaches the pressure stability value, the negative pressure vacuum pump is turned off.

[0112] In this embodiment, the internal pressure of the shell-and-tube condenser is adjusted in real time by a positive pressure charging pump and a negative pressure exhaust pump to ensure that it is always within a safe pressure range.

[0113] In some embodiments of the present application, when the temperature parameter to be controlled is greater than a preset temperature threshold and the pressure parameter to be controlled does not satisfy a preset pressure range, a third control mode is adopted, further comprising:

[0114] When the temperature parameter to be controlled does not satisfy the preset range, and the pressure parameter to be controlled does not satisfy the preset pressure range, the third control unit controls the first control unit and the second control unit, and controls the shell-and-tube condenser at the same time.

[0115] The beneficial effect of the above technical solution is: when the temperature and pressure do not meet the preset standards at the same time, the third control unit controls the first control unit and the second control unit to start at the same time, and coordinates the control of the condenser. By adjusting the temperature and pressure dually, it is helpful to eliminate the instability risk caused by long-term operation of the shell and tube condenser in actual conditions, and ensure that the shell and tube condenser can operate stably for a long time.

[0116] S140: After controlling the shell-and-tube condenser, determine whether the shell-and-tube condenser reaches the preset condensation standard. If so, end the control; if not, obtain the current parameters to be controlled, and re-determine the corresponding control mode based on the current parameters to be controlled.

[0117] The beneficial effect of the above technical solution is: to avoid the situation where the shell-and-tube condenser still cannot reach the optimal working state after a single adjustment, after controlling the shell-and-tube condenser through multiple control modules, a risk detection is performed again to ensure that all indicators of the shell-and-tube condenser meet the preset standards.

[0118] In order to further explain the technical idea of ​​the present invention, the technical solution of the present invention is now described in combination with specific application scenarios.

[0119] Correspondingly, such as Figure 2 As shown, the present application also provides a condensation control system for a shell-and-tube condenser, comprising:

[0120] Parameter acquisition module: pre-deploy a detection device corresponding to the parameter to be controlled in the shell-and-tube condenser, and acquire the parameter to be controlled of the shell-and-tube condenser based on the detection device;

[0121] Judgment module: judging whether the shell-and-tube condenser reaches the preset condensation standard according to the parameters to be controlled;

[0122] Control module: when the shell-and-tube condenser does not reach the preset condensation standard, a corresponding control mode is determined based on the parameters to be controlled, wherein the control modes include: a first control mode, a second control mode and a third control mode;

[0123] Risk elimination module: After controlling the shell-and-tube condenser, determine whether the shell-and-tube condenser reaches the preset condensation standard. If so, end the control; if not, obtain the current parameters to be controlled, and re-determine the corresponding control mode based on the current parameters to be controlled.

[0124] In the description of the above embodiments, specific features, structures, materials or characteristics may be combined in a suitable manner in any one or more embodiments or examples.

[0125] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed by the present invention may be used in combination with each other in any manner, and the fact that these combinations are not fully described in this specification is only for the sake of omitting space and saving resources.

[0126] Those skilled in the art can understand that the above are only preferred embodiments of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions recorded in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A condensation control method for a shell-and-tube condenser, characterized in that: include: Pre-deploying a detection device corresponding to the parameter to be controlled in the shell-and-tube condenser, and acquiring the parameter to be controlled of the shell-and-tube condenser based on the detection device; According to the parameters to be controlled, determining whether the shell-and-tube condenser reaches a preset condensation standard; When the shell-and-tube condenser does not reach the preset condensation standard, a corresponding control mode is determined based on the parameter to be controlled, wherein the control mode includes: a first control mode, a second control mode and a third control mode; After controlling the shell-and-tube condenser, determine whether the shell-and-tube condenser reaches the preset condensation standard. If so, end the control; if not, obtain the current parameters to be controlled, and re-determine the corresponding control mode based on the current parameters to be controlled.

2. The condensation control method of a shell-and-tube condenser according to claim 1, characterized in that: The parameters to be controlled include: The temperature parameter to be controlled of the shell and tube condenser and the pressure parameter to be controlled of the shell and tube condenser; The temperature parameters to be controlled also include: the temperature of the condensing agent inside the shell-and-tube condenser; The pressure parameter to be controlled also includes: the current internal pressure of the shell and tube condenser.

3. The condensation control method of a shell-and-tube condenser according to claim 2, characterized in that: When the shell-and-tube condenser does not reach the preset condensation standard, determining a corresponding control mode based on the parameter to be controlled includes: When the temperature parameter to be controlled is greater than a preset temperature threshold, and the pressure parameter to be controlled satisfies a preset pressure range, the first control mode is adopted; When the pressure parameter to be controlled does not satisfy the preset pressure range, and the temperature parameter to be controlled is less than or equal to the preset temperature threshold, adopting the second control mode; When the temperature parameter to be controlled is greater than the preset temperature threshold, and the pressure parameter to be controlled does not satisfy the preset pressure range, the third control mode is adopted.

4. The condensation control method of a shell-and-tube condenser according to claim 3, characterized in that: When the temperature parameter to be controlled is greater than a preset temperature threshold, and the pressure parameter to be controlled satisfies a preset pressure range, the first control mode is adopted, including: Acquire the historical operation records of the shell-and-tube condenser, wherein the historical operation records include temperature safety operation records and temperature risk operation records; When the historical temperature to-be-controlled parameter in the historical operation record is less than or equal to the preset temperature threshold, the historical operation record is recorded as a temperature safety operation record; When the historical temperature to-be-controlled parameter in the historical operation record is greater than the preset temperature threshold, the historical operation record is recorded as a temperature risk operation record; Extract the historical risk control start time and the historical risk control end time of each temperature risk operation record, and calculate the historical risk control duration; A risk operation record curve is constructed by taking the temperature difference between the historical temperature to-be-controlled parameter of the risk operation record and the preset temperature threshold as the ordinate, and taking the risk control time corresponding to each temperature risk operation record as the abscissa; Determine the slope corresponding to each point and calculate the mean slope of all slopes; Calculating the slope ratio of each slope to the slope mean, and determining a maximum slope ratio from all the slope ratios; Counting a first number of safety operation records, and counting a second number of risk operation records; Extract a maximum temperature difference value and a minimum temperature difference value from all temperature difference values; Calculating a historical abnormal temperature control coefficient of the shell-and-tube condenser according to the slope mean, the maximum slope ratio, the maximum temperature difference and the minimum temperature difference; The rotation speed of the circulating water pump and the internal water flow rate of the shell-and-tube condenser are controlled based on the historical abnormal temperature control coefficient.

5. The condensation control method of a shell-and-tube condenser according to claim 4, characterized in that: When calculating the historical abnormal temperature control coefficient of the shell-and-tube condenser according to the slope mean, the maximum slope ratio, the maximum temperature difference and the minimum temperature difference, it includes: Among them, a is the historical abnormal temperature control coefficient, p g is the maximum temperature difference, p1 is the minimum temperature difference, r is the coefficient, which is 0.45, t1 is the maximum slope ratio, and t2 is the slope mean.

6. The condensation control method of a shell-and-tube condenser according to claim 4, characterized in that: The controlling of the circulating water pump speed and the internal water flow of the shell-and-tube condenser based on the historical abnormal temperature control coefficient comprises: Get the current circulating water pump speed and the current internal water flow of the shell-and-tube condenser; Presetting a first preset historical abnormal temperature control coefficient and a second preset historical abnormal temperature control coefficient; wherein the first preset historical abnormal temperature control coefficient is smaller than the second preset historical abnormal temperature control coefficient; Presetting a first preset speed increase coefficient, a second preset speed increase coefficient, and a third preset speed increase coefficient; Presetting a first preset water flow increase coefficient, a second preset water flow increase coefficient and a third preset water flow increase coefficient; When the historical abnormal temperature control coefficient is less than the first preset historical abnormal temperature control coefficient, the first preset speed increase coefficient is selected to increase the current circulating water pump speed, and the first preset water flow increase coefficient is selected to increase the current internal water flow; When the historical abnormal temperature control coefficient is greater than or equal to the first preset historical abnormal temperature control coefficient and less than the second preset historical abnormal temperature control coefficient, the second preset increase coefficient is selected to increase the current circulating water pump speed, and the second preset water flow increase coefficient is selected to increase the current internal water flow; When the historical abnormal temperature control coefficient is greater than or equal to the second preset historical abnormal temperature control coefficient, the third preset increase coefficient is selected to increase the current circulating water pump speed, and the third preset water flow increase coefficient is selected to increase the current internal water flow.

7. The condensation control method of a shell-and-tube condenser according to claim 3, characterized in that: When the pressure parameter to be controlled does not satisfy the preset pressure range, and the temperature parameter to be controlled is less than or equal to the preset temperature threshold, the second control mode is adopted, further comprising: Obtaining the minimum value and the maximum value of the preset pressure range; Calculate the middle value of the preset pressure range and record it as the pressure stability value; When the pressure parameter to be controlled is lower than the minimum value of the preset pressure range, the second control unit controls the positive pressure air pump to start, detects the current pressure value of the shell-and-tube condenser in real time, and turns off the positive pressure air pump when the current pressure value reaches the pressure stable value; When the pressure parameter to be controlled is higher than the maximum value of the preset pressure range, the second control unit controls the negative pressure pump to start, and detects the current pressure value of the shell and tube condenser in real time. When the current pressure value reaches the pressure stability value, the negative pressure pump is turned off.

8. The condensation control method of a shell-and-tube condenser according to claim 3, characterized in that: When the temperature parameter to be controlled is greater than the preset temperature threshold, and the pressure parameter to be controlled does not satisfy the preset pressure range, the third control mode is adopted, further comprising: When the temperature parameter to be controlled does not satisfy the preset range, and the pressure parameter to be controlled does not satisfy the preset pressure range, the third control unit controls the first control unit and the second control unit, and controls the shell-and-tube condenser at the same time.

9. A condensation control system for a shell-and-tube condenser, characterized in that: include: Parameter acquisition module: pre-deploy a detection device corresponding to the parameter to be controlled in the shell-and-tube condenser, and acquire the parameter to be controlled of the shell-and-tube condenser based on the detection device; A judgment module: judging whether the shell-and-tube condenser reaches a preset condensation standard according to the parameters to be controlled; Control module: when the shell-and-tube condenser does not reach the preset condensation standard, determine the corresponding control mode based on the parameter to be controlled, wherein the control mode includes: a first control mode, a second control mode and a third control mode; Risk elimination module: after controlling the shell-and-tube condenser, determine whether the shell-and-tube condenser reaches the preset condensation standard, if so, end the control; if not, obtain the current parameters to be controlled, and re-determine the corresponding control mode based on the current parameters to be controlled.

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