Steam turbine heating and insulation control system based on regional regulation

Abstract

The present invention discloses a steam turbine heating and insulation control system based on regionalized regulation, which relates to the technical field of steam turbine temperature control. It solves the technical problems in the prior art that targeted regional prediction cannot be made during steam turbine heating and temperature control, and heating material fitting detection and control cannot be performed on the predicted area. Specifically, a hypothermia area prediction unit collects hypothermia area information, and substitutes it into a calculation to obtain a hypothermia prediction coefficient for the divided area. The divided area is divided into a hypothermia risk area and a hypothermia stable area according to coefficient comparison analysis; a temperature control matching detection unit distributes and collects the hypothermia risk area of ​​the analysis object, matches and cuts the heating material according to the hypothermia risk area, and performs matching detection after the cutting is completed. After the temperature control matching detection is completed and the heating material adapts to the surface of the hypothermia area, a temperature control matching qualified signal is generated and sent to a temperature control center.

Description

Technical Field

[0001] The present invention relates to the technical field of steam turbine temperature control, and in particular to a steam turbine heating and insulation control system based on regional regulation. Background Art

[0002] A steam turbine is a rotary power machine that converts the thermal energy of steam into mechanical energy. Its operating principle is based on the impulse and reaction of steam. In an impulse turbine, steam expands in the nozzle, reducing its pressure and increasing its velocity. The high-speed steam flow impacts the blades, causing them to rotate, thereby converting the steam's kinetic energy into mechanical energy.

[0003] However, in the existing technology, it is impossible to make targeted regional predictions during turbine heating temperature control, and it is impossible to perform heating material adhesion detection and control on the predicted area, resulting in a decrease in temperature control efficiency. In addition, it is impossible to infer the time of temperature loss based on operation, and temperature control cannot be executed in time, and the temperature control efficiency cannot be detected in real time, which reduces the accuracy of heating material operation detection.

[0004] In view of the above technical defects, a solution is now proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the above-mentioned problems and to propose a steam turbine heating and insulation control system based on regional regulation.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] As a preferred embodiment of the present invention, a steam turbine heating and insulation control system based on regionalized regulation includes a temperature control center, wherein the temperature control center is communicatively connected to a hypothermia area prediction unit, a temperature control matching detection unit, and a hypothermia moment prediction unit;

[0008] The hypothermia area prediction unit marks the steam turbine as the analysis object and divides it into several sub-areas. It then performs hypothermia prediction on the sub-areas, collects hypothermia area information, and uses it to calculate the hypothermia prediction coefficients for the sub-areas. Based on the coefficient comparison and analysis, the sub-areas are divided into hypothermia risk areas and hypothermia stable areas, and the information is sent to the temperature control center.

[0009] The temperature control matching detection unit collects the distribution of the hypothermia risk area of ​​the analysis object, plans the hypothermia risk area on the surface of the analysis object according to the real-time area distribution, cuts the matching heating material according to the hypothermia risk area, and performs matching detection after the cutting is completed. After the temperature control matching detection is completed and the heating material is adapted to the surface of the hypothermia area, a temperature control matching qualified signal is generated and sent to the temperature control center;

[0010] The hypothermia moment prediction unit predicts the hypothermia moment during the operation of the analysis object, collects the startup acquisition parameters and process acquisition parameters, generates the hypothermia safety moment and the hypothermia risk moment through parameter comparison, and sends them to the temperature control center.

[0011] As a preferred embodiment of the present invention, the hypothermia area information includes the rising span of the proportion of the deformation area of ​​the heating surface, the increasing span of the residual water volume in the deformation area of ​​the heating surface, and the steam pressure fluctuation span at the connection of the heating surface where the sub-area is located.

[0012] As a preferred embodiment of the present invention, if the hypothermia prediction coefficient of the divided area exceeds the prediction coefficient threshold, the corresponding divided area will be marked as a hypothermia risk area; if the hypothermia prediction coefficient of the divided area does not exceed the prediction coefficient threshold, the corresponding divided area will be marked as a hypothermia stable area.

[0013] As a preferred embodiment of the present invention, the process of the temperature control matching detection unit is as follows:

[0014] Adjacent position areas that are in the hypothermia risk area or the distance between position areas does not exceed the set threshold are marked as the same risk area, and based on the shape or outline of the real-time hypothermia risk area, if the cutting and production time of the corresponding heating material exceeds the set time threshold or the cutting shape of the heating material is not conducive to regional wrapping, the corresponding hypothermia risk area will be temperature-controlled separately.

[0015] As a preferred embodiment of the present invention, when the coverage area of ​​the matching heating material in the hypothermia risk area is obtained and the coverage area ratio is within the ratio threshold range, it is judged that the cutting shape of the corresponding heating material meets the requirements and the heating material is fixed; if the coverage area ratio is not within the ratio threshold range, it is judged that the cutting shape of the corresponding heating material does not meet the requirements and the heating material continues to be cut or sewn.

[0016] As a preferred embodiment of the present invention, the distance span between the peripheral boundary of the internal contact surface of the fixed heating material and the surface of the hypothermia risk area and the maximum gap increase span between the internal contact surface of the heating material and the surface of the hypothermia risk area are obtained when the analysis object generates vibration during operation;

[0017] If the spacing span value exceeds the spacing span value threshold, or the maximum gap increase span exceeds the gap increase span threshold, the fixed point is replanned and re-fixed; if the spacing span value does not exceed the spacing span value threshold and does not exceed the gap increase span threshold, the heating material is fixed at the current fixed point and the fixed point loosening is monitored in time.

[0018] As a preferred embodiment of the present invention, the startup acquisition parameters and the process acquisition parameters are respectively the numerical ratio of the pressure value at which the steam pressure is lower than the set pressure when the equipment is started during the operation phase of the analysis object and the increasing span of the steam pressure value rising rate, and the instantaneous decrease in the steam flow rate during the operation phase of the analysis object and the duration of the flow rate value remaining constant after the decrease.

[0019] As a preferred embodiment of the present invention, if the startup acquisition parameter exceeds the pressure span ratio threshold, or the process acquisition parameter exceeds the constant duration threshold, a hypothermia risk signal is generated and the current moment is marked as a hypothermia risk moment;

[0020] If the startup acquisition parameter does not exceed the pressure span ratio threshold, and the process acquisition parameter does not exceed the constant duration threshold, a hypothermia safety signal is generated and the current moment is marked as a hypothermia safety moment.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. In the present invention, whether there is a risk of temperature loss in the corresponding divided area is inferred based on the location of the area and the operation process of the steam turbine. Based on the temperature loss prediction of the divided area, temperature control can be effectively performed, which facilitates the processing of heating materials according to the shape of the divided area and fits them to the divided area, thereby improving the heating and heat preservation efficiency of the corresponding divided area and avoiding the decrease in temperature control efficiency caused by the mismatch between the heating material and the shape of the divided area.

[0023] Match heating materials to the hypothermia risk areas. By matching the heating materials with the hypothermia risk areas, it is inferred whether the current heating material composition meets the temperature control requirements of the hypothermia risk areas, ensuring that the heating materials are used in conjunction with the hypothermia risk areas, reducing the hypothermia risk and the amount of hypothermia, and improving the operating stability of the turbine.

[0024] 2. In the present invention, the hypothermia moment is predicted during the operation of the analysis object. By analyzing the operation process of the operation object, it is inferred whether the analysis object is at risk of hypothermia at the operation moment, so as to make advance predictions based on the real-time internal operating environment, thereby reducing the probability of hypothermia in the analysis object, ensuring the operation stability and efficiency of the analysis object, and being able to timely and effectively prevent and control hypothermia, reducing the operational impact caused by hypothermia;

[0025] The real-time temperature control efficiency of the analysis object is detected to infer whether the temperature control efficiency of the heating material on the surface of the current analysis object meets the actual needs, so as to accurately judge the temperature control efficiency of the current heating material according to the temperature loss impact of the analysis object, ensure the operating efficiency of the heating material, and timely perform temperature control when the temperature control is inefficient to avoid the temperature loss of the analysis object caused by the decline of the temperature control material. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To facilitate understanding by those skilled in the art, the present invention is further described below with reference to the accompanying drawings.

[0027] Figure 1 This is a principle block diagram of the first embodiment of the present invention;

[0028] Figure 2 This is a principle block diagram of embodiment 2 of the present invention. DETAILED DESCRIPTION

[0029] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present invention. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute a separate or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0031] Example 1

[0032] See also Figure 1 As shown, a steam turbine heating and insulation control system based on regionalized regulation includes a temperature control center, wherein the temperature control center is communicatively connected to a hypothermia area prediction unit, a temperature control matching detection unit, and a hypothermia moment prediction unit;

[0033] The temperature control center generates a hypothermia area prediction signal and sends it to the hypothermia area prediction unit. After receiving the hypothermia area prediction signal, the hypothermia area prediction unit divides the steam turbine into regions and performs hypothermia prediction for the divided regions. Based on the location of the regions and the operation process of the steam turbine, it is inferred whether there is a hypothermia risk in the corresponding divided regions. Based on the hypothermia prediction of the divided regions, temperature control can be effectively performed, making it easier to process heating materials according to the shapes of the divided regions and fit them to the divided regions, thereby improving the heating and insulation efficiency of the divided regions and avoiding a decrease in temperature control efficiency caused by the mismatch between the heating materials and the shapes of the divided regions.

[0034] The steam turbine is marked as the analysis object and divided into several sub-areas. The temperature loss prediction is performed on the divided areas. The rising span of the proportion of the deformation area of ​​the heating surface of the pipeline in the sub-area during the continuous heating stage of the analysis object is obtained. At the same time, the increasing span of the residual water content in the deformation area of ​​the heating surface in the sub-area during the operation of the analysis object is obtained. The rising span of the proportion of the deformation area of ​​the heating surface of the pipeline in the sub-area during the continuous heating stage of the analysis object and the increasing span of the residual water content in the deformation area of ​​the heating surface in the sub-area during the operation of the analysis object are marked as MSK and SZK, respectively.

[0035] Obtain the steam pressure floating span at the connection of the heating surface at the location of the sub-region during the operation of the analysis object, and mark the steam pressure floating span at the connection of the heating surface at the location of the sub-region during the operation of the analysis object as FDK;

[0036] The above collected data are uniformly marked as hypothermia area information, and substituted into the formula to obtain the hypothermia prediction coefficient of the divided area of ​​the analysis object, where the formula is: Where G is the regional heat loss prediction coefficient, e is a natural constant, α is the set influence coefficient, and when the rising span of the deformation area ratio of the heated surface exceeds the set span threshold, the value is 2.3; otherwise, the value is 1.3; β is an error correction factor, and the value is 0.79; vb1, vb2, and vb3 are the preset proportional coefficients of the rising span of the deformation area ratio of the heated surface, the residual water increase span, and the steam pressure fluctuation span, respectively;

[0037] Compare the temperature loss prediction coefficient of the divided area of ​​the analysis object with the prediction coefficient threshold:

[0038] If the hypothermia prediction coefficient of the divided area of ​​the analysis object exceeds the prediction coefficient threshold, it is inferred that the hypothermia prediction of the corresponding divided area within the analysis object is high probability, the corresponding divided area is marked as a hypothermia risk area, and the location of the hypothermia risk area is sent to the temperature control center. The temperature control center monitors the real-time location of the hypothermia risk area during the operation phase and continues to monitor it until the end of the operation phase;

[0039] If the hypothermia prediction coefficient of the divided area of ​​the analysis object does not exceed the prediction coefficient threshold, it is inferred that the hypothermia prediction of the corresponding divided area in the analysis object is low probability, the corresponding divided area is marked as a hypothermia stable area, and the location of the hypothermia stable area is sent to the temperature control center;

[0040] At the same time, a temperature control matching detection signal is generated and sent to the temperature control matching detection unit. After receiving the temperature control matching detection signal, the temperature control matching detection unit matches the heating material to the temperature loss risk area. By matching the heating material with the temperature loss risk area, it is inferred whether the current heating material composition meets the temperature control requirements of the temperature loss risk area, ensuring that the heating material is used in the temperature loss risk area, reducing the risk and amount of temperature loss, and improving the operating stability of the steam turbine;

[0041] The hypothermia risk areas of the analysis object are distributed and collected, and the hypothermia risk areas on the surface of the analysis object are planned according to the real-time area distribution. That is, adjacent position areas are in the hypothermia risk area or the hypothermia risk areas where the distance between position areas does not exceed the set threshold are marked as the same risk area. And according to the shape or outline of the real-time hypothermia risk area, if the cutting and production time of the corresponding heating material exceeds the set time threshold or the cutting shape of the heating material is not conducive to regional wrapping, the corresponding hypothermia risk area will be temperature-controlled separately; the unfavorable regional wrapping is indicated by the heating material being loose after cutting and fixing, and the looseness can be monitored through gap measurement;

[0042] The heating material is cut to match the hypothermia risk area, and after the cutting is completed, a matching test is performed to obtain the coverage area of ​​the matching heating material in the hypothermia risk area. If the coverage area ratio is within the coverage threshold range, it is determined that the cutting shape of the corresponding heating material meets the requirements, and the heating material is fixed; if the coverage area ratio is not within the coverage threshold range, it is determined that the cutting shape of the corresponding heating material does not meet the requirements, and the heating material is further cut or sewn;

[0043] Obtain the spacing span between the peripheral boundary of the internal contact surface of the fixed heating material and the surface of the hypothermia risk area, and the maximum gap increase span between the internal contact surface of the heating material and the surface of the hypothermia risk area when the analysis object is vibrating during operation. If the spacing span between the peripheral boundary of the internal contact surface of the fixed heating material and the surface of the hypothermia risk area exceeds the spacing span threshold, or the maximum gap increase span between the internal contact surface of the heating material and the surface of the hypothermia area exceeds the gap increase span threshold, it is inferred that the fixing of the heating material on the surface of the hypothermia area within the analysis object is inefficient, and the fixing points are replanned and re-fixed.

[0044] If the spacing span between the peripheral boundary of the internal contact surface of the fixed heating material and the surface of the hypothermia risk area does not exceed the spacing span threshold when the analysis object generates vibration during operation, and the maximum gap increase span between the internal contact surface of the heating material and the surface of the hypothermia area does not exceed the gap increase span threshold, it is inferred that the heating material on the surface of the hypothermia area within the analysis object is efficiently fixed, and the heating material is fixed at the current fixed point and the fixed point loosening monitoring is carried out in a timely manner;

[0045] After the temperature control matching test is completed and the heating material is adapted to the surface of the temperature loss area, a temperature control matching qualified signal is generated and sent to the temperature control center; the temperature control center performs real-time temperature monitoring and timely controls the heating material;

[0046] At the same time, a hypothermia prediction signal is generated and sent to a hypothermia prediction unit. After receiving the hypothermia prediction signal, the hypothermia prediction unit predicts the hypothermia moment during the operation of the analysis object. By analyzing the operation process of the operation object, it is inferred whether there is a hypothermia risk at the operation moment of the analysis object, so as to make an advance prediction based on the real-time internal operation environment, thereby reducing the probability of hypothermia occurring in the analysis object, ensuring the operation stability and efficiency of the analysis object, and being able to timely and effectively prevent and control hypothermia, thereby reducing the operational impact caused by hypothermia;

[0047] Obtain the numerical ratio of the pressure value at which the steam pressure is lower than the set pressure during the startup of the equipment in the operation phase of the analysis object and the corresponding numerical value of the increase span of the steam pressure value rising speed, wherein the numerical ratio is expressed as the ratio of the corresponding numerical values ​​of the pressure value and the speed span value, without considering the influence of inconsistent units, and mark the numerical ratio of the pressure value at which the steam pressure is lower than the set pressure during the startup of the equipment in the operation phase of the analysis object and the corresponding numerical value of the increase span of the steam pressure value rising speed as the startup acquisition parameter;

[0048] Obtaining the instantaneous decrease in steam flow rate and the duration of the flow rate value remaining constant after the decrease during the operation phase of the analysis object, and marking the instantaneous decrease in steam flow rate and the duration of the flow rate value remaining constant after the decrease during the operation phase of the analysis object as a process acquisition parameter;

[0049] The pressure value at which the steam pressure is lower than the set pressure when the equipment is started during the operation phase of the analysis object, the corresponding value ratio of the steam pressure value increase span of the steam pressure value increase rate, and the steam flow rate instantaneously reduced during the operation phase of the analysis object and the duration of the flow rate remaining constant after the flow rate decrease are respectively used as the pressure span ratio threshold and the constant duration threshold for comparison:

[0050] If the ratio of the pressure value at which the steam pressure is lower than the set pressure when the equipment is started during the operation phase of the analysis object and the corresponding value of the increase span of the steam pressure value rising speed exceeds the pressure span ratio threshold, or the steam flow rate decreases instantaneously during the operation phase of the analysis object and the constant duration of the flow rate value after the decrease exceeds the constant duration threshold, then it is inferred that the current moment of the analysis object operation phase is predicted to have a high risk of hypothermia, a hypothermia risk signal is generated, and the current moment is marked as a hypothermia risk moment, and the hypothermia risk moment and the hypothermia risk signal are sent together to the temperature control center;

[0051] If the ratio of the pressure value at which the steam pressure is lower than the set pressure when the equipment is started during the operation phase of the analysis object to the corresponding value of the increase span of the steam pressure value rising speed does not exceed the pressure span ratio threshold, and the steam flow rate decreases instantaneously during the operation phase of the analysis object and the constant duration after the flow rate value decreases does not exceed the constant duration threshold, then it is inferred that the current moment of the operation phase of the analysis object is predicted to have a low risk of hypothermia, a hypothermia safety signal is generated, and the current moment is marked as a hypothermia safety moment, and the hypothermia safety moment and the hypothermia safety signal are sent together to the temperature control center;

[0052] The control center receives the hypothermia safety moment and the hypothermia risk moment, collects the increase span of the frequency of the hypothermia risk moment and the shortening of the duration of the continuous occurrence of the hypothermia safety moment, and if the increase span of the frequency of the hypothermia risk moment exceeds the frequency increase span threshold, or the shortening of the duration of the continuous occurrence of the hypothermia safety moment does not exceed the frequency increase span threshold, a hypothermia warning maintenance signal is issued and sent to the administrator terminal. After receiving the hypothermia warning maintenance signal, the administrator terminal performs operation maintenance on the current analysis object and detects the area corresponding to the hypothermia moment;

[0053] If the increase in the frequency of hypothermia risk moments does not exceed the frequency increase span threshold, and the shortening of the duration of consecutive hypothermia safety moments exceeds the frequency increase span threshold, continuous monitoring will be carried out;

[0054] Example 2

[0055] See also Figure 2 As shown, the temperature control center is communicatively connected to the real-time temperature control detection unit. The temperature control center generates a real-time temperature control detection signal and sends the real-time temperature control detection signal to the real-time temperature control detection unit. After receiving the real-time temperature control detection signal, the real-time temperature control detection unit detects the real-time temperature control efficiency of the analysis object, and infers whether the temperature control efficiency of the heating material on the surface of the current analysis object meets the actual demand, thereby accurately judging the temperature control efficiency of the current heating material according to the temperature loss effect of the analysis object, ensuring the operating efficiency of the heating material, and being able to timely perform temperature control when the temperature control is inefficient, thereby avoiding the temperature loss of the analysis object caused by the decline of the effect of the temperature control material;

[0056] Obtain the decrease span of the ambient temperature of the heated surface inside the corresponding divided area when the surface temperature of any divided area rises during the operation of the analysis object. At the same time, obtain the numerical ratio of the proportion of the heating material coverage area in the loss of temperature area and the average temperature decrease inside the loss of temperature area not covered by heating material during the operation of the analysis object. The numerical ratio does not consider the units of the two data, and only the numerical impact is statistically analyzed.

[0057] The decrease span of the ambient temperature of the heated surface inside the corresponding divided area when the surface temperature of any divided area rises during the operation of the analysis object, and the corresponding numerical ratio of the area covered by heating materials in the loss of temperature area to the average temperature decrease inside the loss of temperature area not covered by heating materials during the operation of the analysis object are marked as control efficiency information and protection impact information, respectively, and compared with the temperature decrease span threshold and area mean ratio threshold, respectively:

[0058] If the surface temperature of any divided area rises during the operation of the analysis object, the drop span of the ambient temperature of the heated surface inside the corresponding divided area exceeds the temperature drop span threshold, or the corresponding numerical ratio of the coverage area of ​​the heating material in the heat loss area to the average temperature drop of the heat loss area not covered by the heating material during the operation of the analysis object does not exceed the area mean ratio threshold, then it is inferred that the temperature control detection of the analysis object is abnormal, and a temperature control detection abnormality signal is generated and sent to the temperature control center. After receiving the temperature control detection abnormality signal, the temperature control center re-divides the area inside the analysis object and re-plans the coverage area of ​​the heating material on the surface of the area, and fixes the heating material on the surface of the corresponding area;

[0059] If, during the operation of the analysis object, the surface temperature of any divided area rises, the drop span of the ambient temperature of the heated surface inside the corresponding divided area does not exceed the temperature drop span threshold, and the corresponding numerical ratio of the coverage area of ​​the heating material in the loss of temperature area to the average value of the temperature drop inside the loss of temperature area not covered by the heating material during the operation of the analysis object exceeds the area mean ratio threshold, it is inferred that the temperature control detection of the analysis object is normal, and a temperature control detection normal signal is generated and sent to the temperature control center;

[0060] The above formulas are obtained by collecting a large amount of data and performing software simulation to select a formula close to the actual value. The coefficients in the formula are set by those skilled in the art according to actual conditions;

[0061] When the present invention is in use, the hypothermia area prediction unit predicts hypothermia for the divided area, collects hypothermia area information, and substitutes it into the calculation to obtain the hypothermia prediction coefficient of the divided area, and divides the divided area into a hypothermia risk area and a hypothermia stable area according to the coefficient comparison analysis; the temperature control matching detection unit plans the hypothermia risk area on the surface of the analysis object according to the real-time area distribution, matches the heating material according to the hypothermia risk area, and performs matching detection after the cutting is completed. After the temperature control matching detection is completed and the heating material is adapted to the surface of the hypothermia area, a temperature control matching qualified signal is generated and the temperature control matching qualified signal is sent to the temperature control center; the hypothermia moment prediction unit predicts the hypothermia moment during the operation of the analysis object.

[0062] The preferred embodiments of the present invention disclosed above are intended only to help illustrate the present invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the present invention to specific embodiments. Obviously, many modifications and variations are possible based on the contents of this specification. These embodiments are selected and described in detail in this specification to better explain the principles and practical applications of the present invention, thereby enabling those skilled in the art to better understand and utilize the present invention. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A steam turbine heating and insulation control system based on regional regulation is characterized by: A temperature control center, wherein the temperature control center is communicatively connected to a hypothermia area prediction unit, a temperature control matching detection unit, and a hypothermia moment prediction unit; The hypothermia area prediction unit marks the steam turbine as the analysis object and divides it into several sub-areas. It then performs hypothermia prediction on the sub-areas, collects hypothermia area information, and uses it to calculate the hypothermia prediction coefficients for the sub-areas. Based on the coefficient comparison and analysis, the sub-areas are divided into hypothermia risk areas and hypothermia stable areas, and the information is sent to the temperature control center. The temperature control matching detection unit collects the distribution of the hypothermia risk area of ​​the analysis object, plans the hypothermia risk area on the surface of the analysis object according to the real-time area distribution, cuts the matching heating material according to the hypothermia risk area, and performs matching detection after the cutting is completed. After the temperature control matching detection is completed and the heating material is adapted to the surface of the hypothermia area, a temperature control matching qualified signal is generated and sent to the temperature control center; The hypothermia moment prediction unit predicts the hypothermia moment during the operation of the analysis object, collects the startup acquisition parameters and process acquisition parameters, generates the hypothermia safety moment and hypothermia risk moment through parameter comparison, and sends them to the temperature control center; the startup acquisition parameters and process acquisition parameters are respectively the pressure value when the steam pressure is lower than the set pressure when the equipment is started during the operation phase of the analysis object and the corresponding numerical ratio of the increase span of the steam pressure value rising speed, and the instantaneous decrease of the steam flow rate during the operation phase of the analysis object and the duration of the constant flow rate after the decrease; if the startup acquisition parameter exceeds the pressure span ratio threshold, or the process acquisition parameter exceeds the constant duration threshold, a hypothermia risk signal is generated and the current moment is marked as a hypothermia risk moment; If the startup acquisition parameter does not exceed the pressure span ratio threshold, and the process acquisition parameter does not exceed the constant duration threshold, a hypothermia safety signal is generated and the current moment is marked as a hypothermia safety moment.

2. The steam turbine heating and insulation control system based on regional control according to claim 1 is characterized in that: The temperature loss area information includes the rising span of the proportion of the deformation area of ​​the heating surface, the increasing span of the residual water volume in the deformation area of ​​the heating surface, and the steam pressure fluctuation span at the connection of the heating surface where the sub-area is located.

3. The steam turbine heating and insulation control system based on regional control according to claim 2 is characterized in that: If the hypothermia prediction coefficient of the divided area exceeds the prediction coefficient threshold, the corresponding divided area will be marked as a hypothermia risk area; if the hypothermia prediction coefficient of the divided area does not exceed the prediction coefficient threshold, the corresponding divided area will be marked as a hypothermia stable area.

4. The steam turbine heating and insulation control system based on regional control according to claim 1 is characterized in that: The process of temperature control matching detection unit is as follows: Adjacent position areas that are in the hypothermia risk area or the distance between position areas does not exceed the set threshold are marked as the same risk area, and based on the shape or outline of the real-time hypothermia risk area, if the cutting and production time of the corresponding heating material exceeds the set time threshold or the cutting shape of the heating material is not conducive to regional wrapping, the corresponding hypothermia risk area will be temperature-controlled separately.

5. The steam turbine heating and insulation control system based on regional control according to claim 4 is characterized in that: When the coverage area of ​​the matching heating material in the hypothermia risk area is obtained and the coverage area ratio is within the ratio threshold range, it is judged that the cutting shape of the corresponding heating material meets the requirements and the heating material is fixed; if the coverage area ratio is not within the ratio threshold range, it is judged that the cutting shape of the corresponding heating material does not meet the requirements and the heating material will continue to be cut or sewn.

6. The steam turbine heating and insulation control system based on regional control according to claim 5 is characterized in that: Obtain the distance span between the peripheral boundary of the internal contact surface of the fixed heating material and the surface of the hypothermia risk area, and the maximum gap increase span between the internal contact surface of the heating material and the surface of the hypothermia risk area when the analysis object is vibrating during operation; If the spacing span exceeds the spacing span threshold, or the maximum gap increase span exceeds the gap increase span threshold, the fixed point position is replanned and re-fixed; If the spacing span value does not exceed the spacing span value threshold and does not exceed the gap increase span threshold, the heating material is fixed at the current fixed point and the fixed point loosening monitoring is carried out in time.

Images