A control method based on cooling system of gas generator set

Abstract

The present invention discloses a control method based on a gas generator set cooling system, including: monitoring and obtaining the equipment temperature information of the gas generator set; analyzing the equipment temperature information to determine the heat dissipation path; controlling the cooling system according to the local and overall heat dissipation paths and temperature information of the equipment, so that the temperature of the gas generator is controlled within a safe standard. The control method based on the gas generator set cooling system provided by the present invention can improve the cooling efficiency, ensure the stable operation of the unit under different loads, extend the life of the unit, save energy, and reduce operating costs through precise control of the gas generator set cooling system, and has broad application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of automatic control of cooling systems, and in particular to a control method based on a cooling system of a gas generator set. Background Art

[0002] Gas generator sets use gas combustion to generate high-temperature and high-pressure gas to drive the generator rotor to rotate, thereby generating electricity. During the operation of gas generator sets, since gas combustion generates a lot of heat, it needs to be cooled. The control method of the gas generator set cooling system is to achieve effective control of the cooling of the generator set.

[0003] The cooling system of gas generator sets mainly includes two types: water cooling circulation system and air cooling circulation system. The water cooling circulation system uses a water pump to send cooling water into the radiator, and then discharges the hot water in the radiator through a water pipe to cool the generator set. The air cooling circulation system uses a fan to blow cooling air into the radiator and discharge the hot air to cool the generator set.

[0004] The technical background of the gas generator set cooling system control method includes the following aspects: The gas generator set needs to be cooled during operation, otherwise it is easy to cause overheating and damage. Therefore, the control method of the gas generator set cooling system is crucial. The control method is different for different gas generator set cooling systems. For example, in the water-cooled circulation system, it is necessary to control the flow, temperature and pressure of the water pump; while in the air-cooled circulation system, it is necessary to control the speed of the fan and the flow of cooling air. Summary of the invention

[0005] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0006] In view of the above-mentioned problems, the present invention is proposed.

[0007] Therefore, the technical problem solved by the present invention is that the existing method does not cool the equipment in a timely manner, and solves the problem of optimizing the heat recovery of the cooling system.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions: a control method based on a cooling system of a gas generator set, comprising:

[0009] Monitor and obtain equipment temperature information of gas generators;

[0010] Analyze the device temperature information to determine the heat dissipation path;

[0011] The cooling system is controlled according to the local and overall heat dissipation paths and temperature information of the equipment, so that the temperature of the gas generator is controlled within a safe standard.

[0012] As the control method based on the cooling system of the gas generator set of the present invention, it is characterized in that: analyzing the temperature information of the equipment includes analyzing the material of the equipment to obtain the relationship between the material of the equipment and the temperature;

[0013] If the equipment material is greatly affected by temperature, increase the sensitivity coefficient δ of the cooling system.

[0014] As the control method based on the cooling system of the gas generator set according to the present invention, it is characterized in that: the heat dissipation path of the judgment includes:

[0015] Obtain the internal structure of the device and evaluate the heat dissipation method of the cooling system; determine whether the basic heat dissipation of the cooling fan can meet the cooling requirements of the device based on the frame structure and heat output of the device;

[0016] If the cooling fan can meet the cooling demand of the generator set in the frame structure and the heat output, it is further determined that the cooling fan interferes with the generator set.

[0017] The control method based on the cooling system of the gas generator set described in the present invention is characterized in that: if the internal structure of the generator set is sensitive to the interference of the cooling fan, the speed of the cooling fan is adjusted according to the degree of sensitivity; at the same time, the unit that cannot meet the cooling demand after the heat dissipation speed adjustment is driven for water supplementary cooling.

[0018] As the control method based on the cooling system of the gas generator set according to the present invention, it is characterized in that: the driving of the water supply cooling includes:

[0019] When the equipment temperature is not higher than 100 degrees, the amount of cooling water required for the equipment is proportional to the cooling demand.

[0020] The cooling demand includes: P = TR;

[0021] Among them, P represents the demand for cooling, T represents the heat output of the unit, and R represents the heat dissipation of the cooling fan;

[0022] When the equipment temperature is higher than 100 degrees, the heat is recovered through the heating effect of high temperature on the cooling water volume, and the recovered heat is used to increase the water flow pressure of the equipment's cooling water volume, thereby increasing the total flow rate;

[0023]

[0024] Where I represents the flow rate, the heat transfer efficiency between cooling water and equipment is f(x) = P g(x), g(x) is the heat absorption efficiency function of cooling water, ρ represents the coverage rate of the cooling system to the equipment, φ represents the equipment surface covered by the water supply cooling system, |Q| represents the heat generation of the equipment itself, y(d) represents the pressure conversion function, and α represents the influence factor of the cooling pipe on the heat transfer between cooling water and equipment.

[0025] As the control method based on the cooling system of the gas generator set according to the present invention, it is characterized in that: the driving of the water supply cooling also includes:

[0026] When the return water temperature in the equipment's cooling system differs too much from the historical temperature during normal operation, the equipment temperature cooling system is analyzed. If the analysis results show that the equipment is performing unit tasks in a new working state, the return water temperature change in this process is recorded and the return water temperature range in this state is updated; if it exceeds the corresponding working state, an early warning is issued and the dispatch staff handles the early warning content;

[0027] The return water temperature differs too much from the historical temperature during normal operation, including sensing the return water temperature to match the return water temperature with the operating state, setting a floating threshold based on the historical temperature, and determining that the temperature difference is too large if the threshold is exceeded.

[0028] As the control method based on the cooling system of the gas generator set according to the present invention, it is characterized in that: the floating threshold value includes:

[0029] Get the average return water temperature t in each state based on historical information 1 and range t 2 , the threshold t is set to t = t 1 ±t 2 ,

[0030] If the return water temperature of the unit during operation meets the range of the threshold, the return water temperature at this time is obtained as historical data to update the threshold.

[0031] As the control method based on the cooling system of the gas generator set according to the present invention, it is characterized in that: the driving of the water supply cooling also includes:

[0032] If the pressure increase of heat recovery of water replenishment cooling and the flow rate brought by its own water pressure cannot meet the cooling demand, and the water circulation of the cooling system reaches the maximum workload, the coolant intervention cooling is started; when the coolant is intervened, the proportion of coolant is slowly increased until the equipment temperature reaches the historical average level and the coolant intervention ratio is stopped;

[0033] After reaching the historical average level, the intervention ratio of the coolant is reduced, and the equipment temperature is monitored after each cooling line is reduced. If the temperature change continues to decrease, the intervention ratio of the coolant is reduced again until the temperature no longer changes after the intervention ratio of the coolant is reduced, and the intervention ratio is stabilized at this time;

[0034] When the temperature rises after the reduction ratio, increase the coolant intervention ratio and reduce the cooling water flow until the equipment temperature remains constant.

[0035] A computer device comprises: a memory and a processor; the memory stores a computer program, wherein the processor implements the steps of any one of the methods of the present invention when executing the computer program.

[0036] A computer-readable storage medium stores a computer program, wherein the computer program, when executed by a processor, implements the steps of any one of the methods of the present invention.

[0037] Beneficial effects of the invention: The control method based on the cooling system of the gas generator set provided by the invention can improve the cooling efficiency through precise control of the cooling system of the gas generator set, ensure the stable operation of the unit under different loads, extend the life of the unit, save energy, and reduce operating costs, and has broad application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0039] Figure 1 An overall flow chart of a control method based on a gas generator set cooling system provided in the first embodiment of the present invention;

[0040] Figure 2 A control method based on a gas generator set cooling system according to a second embodiment of the present invention provides a proportional relationship diagram between the temperature generated by the equipment and the heat dissipation mode of the cooling system. DETAILED DESCRIPTION

[0041] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the drawings of the specification. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary persons in the art without creative work should fall within the scope of protection of the present invention.

[0042] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0043] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0044] The present invention is described in detail with reference to schematic diagrams. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0045] At the same time, in the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "upper, lower, inner and outer" are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first, second or third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0046] In the present invention, unless otherwise clearly specified and limited, the terms "install, connect, connect" should be understood in a broad sense, for example: it can be a fixed connection, a detachable connection or an integral connection; it can also be a mechanical connection, an electrical connection or 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 the present invention can be understood according to specific circumstances.

[0047] Example 1

[0048] Reference Figure 1, is an embodiment of the present invention, and provides a control method based on a cooling system of a gas generator set, comprising:

[0049] S1: Monitor and obtain the equipment temperature information of the gas generator set.

[0050] Furthermore, obtaining the temperature information of the equipment unit includes monitoring and obtaining the local and overall temperature information of the generator.

[0051] It should be noted that some equipment will have locally generated heat much higher than other parts, but the overall heat resistance of the unit is not much different. This will cause the local temperature to be higher than the equipment limit while the overall temperature is not high, which will cause local damage to the equipment.

[0052] S2: Analyze the device temperature information to determine the heat dissipation path.

[0053] Furthermore, analyzing the device temperature information includes analyzing the material of the device to obtain the relationship between the material of the device and the temperature; if the material of the device is greatly affected by the temperature, the sensitivity coefficient δ of the cooling system is increased.

[0054] It should be noted that if the sensitivity coefficient δ is large, the temperature control is more stringent to ensure that the local temperature of the equipment is at a low level and the equipment unit is not damaged by high temperature; if the sensitivity coefficient is small, the normal temperature control level is maintained.

[0055] It should be noted that the method for determining the heat dissipation includes: obtaining the internal structure of the equipment and evaluating the heat dissipation method of the cooling system; determining whether the basic heat dissipation of the cooling fan can meet the cooling requirements of the equipment based on the frame structure and heat output of the equipment; if the cooling fan can meet the cooling requirements of the generator set within the frame structure and heat output, further determining whether the cooling fan interferes with the generator set.

[0056] If the internal structure of the generator set is sensitive to the interference of the cooling fan, the speed of the cooling fan is adjusted according to the sensitivity; at the same time, the unit that cannot meet the cooling demand after the cooling speed adjustment is driven for water supplementary cooling.

[0057] It should also be said that if the internal structure is easily disturbed by the effects of wind, or easily affected by electromagnetic interference caused by the cooling fan, or the wind causes the internal circuits to swing, thereby affecting the output effect of the equipment, then the cooling method to be applied can be further determined by analyzing whether the internal structure of the generator set is sensitive to the interference of the cooling fan.

[0058] S3: Control the cooling system according to the local and overall heat dissipation paths and temperature information of the equipment to keep the temperature of the gas generator within a safe standard.

[0059] When the equipment temperature is not higher than 100 degrees, the amount of cooling water for the equipment is proportional to the cooling demand, and the cooling demand includes: P=TR; wherein P represents the cooling demand, T represents the heat output of the unit, and R represents the heat dissipation of the cooling fan.

[0060] When the equipment temperature is higher than 100 degrees, the heat is recovered through the heating effect of high temperature on the cooling water volume, and the recovered heat is used to increase the water flow pressure of the equipment's cooling water volume, thereby increasing the total flow rate;

[0061]

[0062] Among them, I represents the flow rate, the heat transfer efficiency between cooling water and equipment is f(x) = P·g(x), g(x) is the heat absorption efficiency function of cooling water, ρ represents the coverage rate of the cooling system to the equipment, φ represents the equipment surface covered by the water supply cooling system, |Q| represents the heat generation of the equipment itself, and y(d) represents the pressure conversion function. α represents the influence factor of the cooling pipe on the heat transfer between cooling water and equipment. The larger the value, the smaller the inhibitory effect on the heat transfer between cooling water and equipment; the smaller the value, the greater the inhibitory effect on the heat transfer between cooling water and equipment. At this time, a larger amount of cooling water is required to overcome the inhibitory effect. Furthermore, the pressure conversion function is a conversion function that uses the recovered heat as water pressure power, because the absorbed heat cannot be fully utilized, but needs to be lost and converted to convert the recovered heat energy into water pressure power. The method of increasing the flow rate by recovering heat can not only save energy, but also achieve the effect of greater cooling water flow at higher temperatures, and can make the flow rate positively correlated with the equipment temperature, thereby achieving the stability and adaptability of automatic adjustment.

[0063] It should be noted that the drive of make-up water cooling also includes: when a return water temperature in the cooling system of the equipment differs too much from the historical temperature during normal operation, the equipment temperature cooling system is analyzed; if the analysis results show that the equipment is performing the unit task in a new working state, the return water temperature change of this process is recorded, and the return water temperature range under this state is updated; if it exceeds the corresponding working state, an early warning is issued, and the staff is dispatched to handle the early warning content; the difference between a certain return water temperature and the historical temperature during normal operation is too large, including sensing the return water temperature, matching the return water temperature with the operating state, setting a floating threshold based on the historical temperature, and if the threshold is exceeded, it is judged that the temperature difference is too large.

[0064] The floating threshold includes: obtaining the average return water temperature t in each state according to historical information 1 and range t 2 , the threshold t is set to t = t 1 ±t 2If the return water temperature during the operation of the unit satisfies the threshold range, obtain the current return water temperature as historical data to update the threshold.

[0065] If the pressurization increase of the heat recovery of the makeup water cooling and the flow rate brought by its own water pressure cannot meet the cooling demand, and the water circulation of the cooling system reaches the maximum working load, start the coolant to intervene in the cooling; when the coolant intervenes, slowly increase the proportion of the coolant until the equipment temperature reaches the historical average level and stop the intervention proportion of the coolant; after reaching the historical average level, reduce the intervention proportion of the coolant. After each reduction of a cooling line, monitor the equipment temperature. If the temperature continues to decrease, reduce the intervention proportion of the coolant again until the temperature no longer changes after reducing the intervention proportion of the coolant, and then stabilize the intervention proportion; when the temperature rises after reducing the proportion, increase the intervention proportion of the coolant and reduce the flow rate of the cooling water until the equipment temperature remains constant.

[0066] It should be noted that both the cooling water and the coolant are transported through pipelines. By controlling the number of pipelines, the intervention proportion of the coolant is controlled. The cooling effect of the coolant is much higher than that of water, preventing equipment damage caused by rapid heating after the equipment is cooled due to too rapid temperature reduction. Therefore, when intervening, slowly intervene in the cooling system; when reducing the proportion, stop the flow of the coolant in one pipeline and replace it with water. When the temperature rises after reducing the proportion, it means that the cooling demand cannot be met at this time, and the proportion of the coolant needs to be increased. If this proportion is increased, the equipment will continue to cool down, which is likely to cause deviation of the historical data of the equipment. The present invention ensures that the cooling system maintains the unit temperature at the historical average level by increasing the intervention of the coolant in one pipeline and reducing the flow rate of the water. Furthermore, maintaining at the historical average level can ensure that this adjustment does not interfere with the deviation of the historical data.

[0067] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and the computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. Among them, any reference to memory, database or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory may include read-only memory, tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive memory, magnetic memory, ferroelectric memory, phase change memory, graphene memory, etc. Volatile memory may include random access memory or external cache memory, etc. As an illustration and not limitation, RAM can be in various forms, such as static random access memory or dynamic random access memory, etc. The database involved in the embodiments provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited thereto.

[0068] The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic unit, a data processing logic unit based on quantum computing, etc., but is not limited thereto.

[0069] Example 2

[0070] Reference Figure 2 , which is an embodiment of the present invention, provides a control method based on the cooling system of a gas generator set. In order to verify the beneficial effects of the present invention, scientific demonstration is carried out through economic benefit calculation and simulation experiments.

[0071] Figure 2 The proportional relationship between the temperature generated by the equipment of the present invention and the heat dissipation method of the cooling system is demonstrated. It can be seen that in the low temperature section, the heat dissipation fan and the cooling water volume have a cooling effect in the cooling system; in the medium temperature section, the heat dissipation fan and the cooling water volume have a cooling effect in the cooling system, but the proportion of the cooling water volume increases significantly; in the high temperature section, the three cooling methods are used in parallel to ensure that the equipment temperature is maintained within the limit.

[0072] Table 1 shows the history of the device temperature over a period of time of the method of the present invention. Only integers are taken to represent the average temperature of the corresponding device or part for five cycles.

[0073] Table 1:

[0074] Cycle 1 Cycle 2 Cycle 3 Cycle 4 Cycle 5 Part 1 90 89 89 92 90 Device 2 50 49 47 48 49 Part 3 204 201 200 202 200

[0075] It can be seen that both the medium temperature part 1 and the high temperature part 3 can maintain a stable temperature within a small fluctuation range, and the working state is stable; the overall temperature of the equipment 2 can also be stabilized within a stable fluctuation range in 1-5 cycles, and the operation of each part can achieve the equipment function.

[0076] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A control method based on the cooling system of a gas generator set, It is characterized in that include: Monitor and obtain equipment temperature information of gas generator sets; Analyze the device temperature information to determine the heat dissipation path; The cooling system is controlled according to the local and overall heat dissipation paths and temperature information of the equipment to keep the temperature of the gas generator within the safety standard; Analyzing the device temperature information includes analyzing the material of the device to obtain the relationship between the material of the device and the temperature; If the equipment material is greatly affected by temperature, increase the sensitivity coefficient δ of the cooling system; The heat dissipation method includes: Obtain the internal structure of the device and evaluate the heat dissipation method of the cooling system; determine whether the basic heat dissipation of the cooling fan can meet the cooling requirements of the device based on the frame structure and heat output of the device; If the cooling fan can meet the cooling demand of the generator set in the frame structure and heat output, it is further determined that the cooling fan interferes with the generator set; If the internal structure of the generator set is sensitive to the interference of the cooling fan, the speed of the cooling fan is adjusted according to the sensitivity; at the same time, the unit that cannot meet the cooling demand after the cooling speed adjustment is driven for water supplementary cooling.

2. The control method based on the cooling system of the gas generator set according to claim 1, Features: The drive of the water supply cooling includes: When the equipment temperature is not higher than 100 degrees, the amount of cooling water required for the equipment is proportional to the cooling demand. The cooling demand includes: P = TR; Among them, P represents the demand for cooling, T represents the heat output of the unit, and R represents the heat dissipation of the cooling fan; When the equipment temperature is higher than 100 degrees, the heat is recovered through the heating effect of high temperature on the cooling water volume, and the recovered heat is used to increase the water flow pressure of the equipment's cooling water volume, thereby increasing the total flow rate; Where I represents the flow rate, the heat transfer efficiency between cooling water and equipment is f(x) = P g(x), g(x) is the heat absorption efficiency function of cooling water, ρ represents the coverage rate of the cooling system to the equipment, φ represents the equipment surface covered by the water supply cooling system, |Q| represents the heat generation of the equipment itself, y(d) represents the pressure conversion function, and α represents the influence factor of the cooling pipe on the heat transfer between cooling water and equipment.

3. The control method based on the cooling system of the gas generator set according to claim 2, Features: The drive of the water supply cooling also includes: When the return water temperature in the equipment's cooling system differs too much from the historical temperature during normal operation, the equipment temperature cooling system is analyzed. If the analysis results show that the equipment is performing unit tasks in a new working state, the return water temperature change in this process is recorded and the return water temperature range in this state is updated; if it exceeds the corresponding working state, an early warning is issued and the dispatch staff handles the early warning content; The return water temperature differs too much from the historical temperature during normal operation, including sensing the return water temperature to match the return water temperature with the operating state, setting a floating threshold based on the historical temperature, and determining that the temperature difference is too large if the threshold is exceeded.

4. The control method based on the cooling system of the gas generator set according to claim 3, Features: The floating thresholds include: Get the average return water temperature t in each state based on historical information 1 and range t 2 , the threshold t is set to t = t 1 ±t 2 , If the return water temperature of the unit during operation meets the range of the threshold, the return water temperature at this time is obtained as historical data to update the threshold.

5. The control method based on the cooling system of the gas generator set according to claim 4, Features: The drive of the water supply cooling also includes: If the pressure increase of heat recovery of water replenishment cooling and the flow rate brought by its own water pressure cannot meet the cooling demand, and the water circulation of the cooling system reaches the maximum workload, the coolant intervention cooling is started; when the coolant is intervened, the proportion of coolant is slowly increased until the equipment temperature reaches the historical average level and the coolant intervention ratio is stopped; After reaching the historical average level, the intervention ratio of the coolant is reduced, and the equipment temperature is monitored after each cooling line is reduced. If the temperature change continues to decrease, the intervention ratio of the coolant is reduced again until the temperature no longer changes after the intervention ratio of the coolant is reduced, and the intervention ratio is stabilized at this time; When the temperature rises after the reduction ratio, increase the coolant intervention ratio and reduce the cooling water flow until the equipment temperature remains constant.

6. A computer device, include: Memory and processor; The memory stores a computer program, wherein the processor implements the steps of any one of claims 1 to 5 when executing the computer program.

7. A computer-readable storage medium having a computer program stored thereon, Features: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 5 are implemented.

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