Heat dissipation system and heat dissipation method of gas generator set

Abstract

The invention discloses a heat dissipation system and a heat dissipation method of a gas generator set, and the heat dissipation system comprises a heat dissipation module which carries out the heat dissipation of a water cooler and an engine cabin through a water-cooled or / and air-cooled radiator, and the water cooler is used for cooling an engine of the gas generator set; the signal acquisition module comprises a first temperature sensor for acquiring the temperature of an engine cabin and a second temperature sensor for acquiring the temperature of the water outlet end of the water cooler; the control module is used for acquiring the signal of the signal acquisition module, analyzing the signal and then controlling the heat dissipation module according to control logic; the heat dissipation module comprises a heat dissipation unit acting on the engine compartment and a heat exchange unit acting on the water cooler. The stability and the energy utilization efficiency of the gas generator set can be improved through the two heat exchangers and control over the heat exchangers.

Description

Technical Field

[0001] The invention relates to control of a gas generator set, in particular to a heat dissipation system and a heat dissipation method of a gas generator set. Background Art

[0002] As a widely used equipment in the field of backup power or outdoor power, the stability and efficiency of gas generator sets are of great importance. During the operation of gas generator sets, the engine will generate a lot of heat due to continuous operation. If the heat is not dissipated in time, it may cause the engine to overheat, thus affecting its performance and life. Therefore, the engine cooling system has become an indispensable and important part of gas generator sets.

[0003] At present, the engine heat dissipation of gas generator sets generally adopts water coolers for heat exchange, in which the water coolers absorb and take away the heat generated by the engine through the circulation of a medium (such as antifreeze). After the antifreeze completes the heat exchange in the water cooler, it is usually further cooled by air cooling or water cooling, and then circulated back to the engine to achieve a continuous heat dissipation effect.

[0004] However, most traditional water chiller antifreeze heat exchange systems use single plate heat exchangers as core components. Although single plate heat exchangers can cool down antifreeze, they still have some shortcomings in practical applications. Specifically, once a single plate heat exchanger fails, it often directly causes the gas generator set to shut down in an emergency, which not only affects the normal operation of the equipment, but may also have a serious impact on the user's electricity demand.

[0005] In addition, the traditional heat exchanger control method lacks adaptability to changes in ambient temperature. In actual applications, no matter how the ambient temperature and antifreeze temperature change, the traditional heat exchanger maintains the same heat exchange capacity. This approach will cause the heat exchange process to be too intense when the ambient temperature is low and the antifreeze temperature is not high, resulting in energy waste. Summary of the invention

[0006] Therefore, in order to solve the above-mentioned shortcomings, the present invention provides a heat dissipation system and a heat dissipation method for a gas generator set. The present invention can improve the stability and energy utilization efficiency of the gas generator set through two heat exchangers and the control of the heat exchanger.

[0007] In one aspect, the present invention provides a heat dissipation system for a gas generator set, comprising:

[0008] A heat dissipation module, which dissipates heat from a water cooler and an engine compartment through a water-cooled or / and air-cooled radiator, wherein the water cooler is used to cool the engine of a gas generator set;

[0009] The signal acquisition module includes a first temperature sensor for acquiring the temperature of the engine compartment and a second temperature sensor for acquiring the temperature of the water outlet of the water cooler;

[0010] A control module, used for acquiring the signal from the signal acquisition module, and controlling the heat dissipation module according to the control logic after analysis;

[0011] The heat dissipation module includes a heat dissipation unit acting on the engine compartment and a heat exchange unit acting on the water cooler.

[0012] Optionally, the heat dissipation unit includes a radiator and a plurality of heat dissipation fans, the radiator is located above the gas generator set, and the heat dissipation fans are located above the radiator;

[0013] The heat exchange unit is arranged at the end of the gas generator set and away from the air intake side of the gas generator set. The heat exchange unit includes a high-temperature heat exchanger and a low-temperature heat exchanger. One end of the high-temperature heat exchanger is connected to the intercooler of the engine, and the other end is connected to the radiator; one end of the low-temperature heat exchanger is connected to the intercooler of the gas generator set, and the other end is connected to the radiator;

[0014] The external circulating water pipeline of the low-temperature heat exchanger is connected to the external circulating water pipeline of the high-temperature heat exchanger, and the external circulating water first enters the low-temperature heat exchanger and then enters the high-temperature heat exchanger.

[0015] Preferably, both the high-temperature heat exchanger and the low-temperature heat exchanger are plate heat exchangers.

[0016] Preferably, 12 cooling fans are installed on the radiator, and the 12 cooling fans are arranged in two rows and six columns, and the six columns of fans are numbered sequentially: column A, column B, column C, column D, column E, and column F.

[0017] On the other hand, the present invention provides a heat dissipation method for a gas generator set, which is implemented by the heat dissipation system of the gas generator set mentioned above, and the heat dissipation method comprises:

[0018] Acquiring temperature information through a signal acquisition module, wherein the temperature information at least includes the temperature of the engine compartment and the temperature of the liquid outlet of the intercooler;

[0019] The control module executes control logic according to the temperature information;

[0020] The control logic is as follows:

[0021] When the temperature of the engine compartment is lower than the first set temperature, the cooling medium of the intercooler enters the radiator and flows back to the intercooler after heat dissipation;

[0022] When the temperature of the engine compartment is greater than the first set temperature and less than the second set temperature, the cooling medium of the intercooler enters the radiator, flows back to the intercooler after heat dissipation, and at the same time, the cooling fans of corresponding quantity and position are started according to the temperature of the engine compartment;

[0023] When the temperature of the liquid outlet of the intercooler is greater than the third set temperature and less than the fourth set temperature, the cooling medium discharged from the radiator enters the low-temperature heat exchanger, and the cooling medium after heat exchange in the low-temperature heat exchanger flows back to the intercooler;

[0024] When the temperature of the liquid outlet is greater than the fourth set temperature and less than the temperature alarm value, the cooling medium discharged from the radiator enters the high-temperature heat exchanger, and the cooling medium after heat exchange in the high-temperature heat exchanger flows back to the intercooler;

[0025] When the temperature of the liquid outlet is greater than or equal to the temperature alarm value, the gas generator set stops working and issues an alarm message.

[0026] Optionally, the control logic further includes:

[0027] When the low-temperature heat exchanger is executed, the cooling water from the external cooling tower enters the low-temperature heat exchanger and then flows back to the cooling tower;

[0028] When the high-temperature heat exchanger is executed, the cooling water from the external cooling tower enters the low-temperature heat exchanger, then enters the high-temperature heat exchanger, and then flows back to the cooling tower.

[0029] Optionally, the method of starting a corresponding number and position of cooling fans according to the engine compartment temperature includes:

[0030] When the temperature of the engine compartment is greater than or equal to the second set temperature, all the cooling fans are started;

[0031] When the temperature of the engine compartment is greater than the first set temperature and less than the second set temperature, the area between the first set temperature and the second set temperature is divided into two unit areas, and the three unit areas are the first area and the second area in sequence;

[0032] When the temperature of the engine compartment is within the first range, turning on the fans of the D and E columns;

[0033] When the temperature of the engine compartment is within the second range, the fans of the C column, the D column, the E column and the F column are turned on.

[0034] Optionally, the cooling fan is a variable frequency axial flow fan, and the cooling fan operates at a fixed frequency when turned on. After all cooling fans are turned on, the operating frequency of the cooling fan changes with the temperature in the engine compartment.

[0035] Optionally, the operating frequency of the cooling fan varies with the temperature in the engine compartment according to the following relationship:

[0036]

[0037] Among them, f new is the real-time operating frequency of the cooling fan, f max is the high frequency value of the cooling fan, f min is the low frequency value of the cooling fan, f max >f min , T new is the real-time temperature in the engine compartment, T max is the temperature alarm value, T2 is the second set temperature, T max Greater than T2, ε is the adjustment coefficient.

[0038] The present invention has the following advantages:

[0039] The present invention dissipates heat from the medium of a chiller (cooling equipment for the engine of a gas generator set) through two heat exchangers, and dissipates heat from the engine compartment through a radiator having several cooling fans, and controls the heat exchanger and the cooling fans through control logic to achieve efficient control of the heat exchanger and the cooling fans, and can adjust the heat exchange or cooling capacity according to the ambient temperature, thereby reducing resource waste and improving the operating stability of the gas generator set. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 It is a schematic diagram of the module structure of the heat dissipation system of the gas generator set of the present invention;

[0041] Figure 2 It is a structural schematic diagram of the heat dissipation system of the gas generator set of the present invention;

[0042] Figure 3 It is a schematic diagram of the heat dissipation system and engine arrangement structure of the gas generator set of the present invention;

[0043] Figure 4 is a schematic diagram of the arrangement of the 12 cooling fans;

[0044] Figure 5 It is a schematic flow chart of the heat dissipation method of the gas generator set of the present invention;

[0045] In the figure: 100, heat dissipation module; 101, radiator; 102, heat dissipation fan; 200, heat exchange unit; 201, high-temperature heat exchanger; 202, low-temperature heat exchanger; 300, engine; 400, control module; 500, signal acquisition module. DETAILED DESCRIPTION

[0046] Embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be construed as limiting the present application.

[0047] In this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises", or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article, or apparatus.

[0048] As described in the background technology, at present, the engine heat dissipation of gas generator sets generally adopts water coolers for heat exchange, wherein the water coolers absorb and take away the heat generated by the engine through the circulation of a medium (such as antifreeze). After the antifreeze completes the heat exchange in the water cooler, it is usually further cooled by air cooling or water cooling, and then circulated back to the engine to achieve a continuous heat dissipation effect.

[0049] However, most traditional water chiller antifreeze heat exchange systems use single plate heat exchangers as core components. Although single plate heat exchangers can cool down antifreeze, they still have some shortcomings in practical applications. Specifically, once a single plate heat exchanger fails, it often directly causes the gas generator set to shut down in an emergency, which not only affects the normal operation of the equipment, but may also have a serious impact on the user's electricity demand.

[0050] In addition, the traditional heat exchanger control method lacks adaptability to changes in ambient temperature. In actual applications, no matter how the ambient temperature and antifreeze temperature change, the traditional heat exchanger maintains the same heat exchange capacity. This approach will cause the heat exchange process to be too intense when the ambient temperature is low and the antifreeze temperature is not high, resulting in energy waste.

[0051] Based on the above reasons, the present invention provides a heat dissipation system for a gas generator set, such as Figure 1-Figure 3 As shown, the heat dissipation system includes:

[0052] The heat dissipation module 100 dissipates heat from a water cooler and an engine compartment through a water-cooled or / and air-cooled radiator, wherein the water cooler is used to cool the engine of a gas generator set;

[0053] The signal acquisition module 500 includes a first temperature sensor for acquiring the temperature of the engine compartment and a second temperature sensor for acquiring the temperature of the water outlet of the water cooler;

[0054] The control module 400 is used to obtain the signal from the signal acquisition module, and control the heat dissipation module according to the control logic after analysis;

[0055] The heat dissipation module includes a heat dissipation unit acting on the engine compartment and a heat exchange unit acting on the water cooler.

[0056] Furthermore, the heat dissipation unit 100 includes a radiator 101 and a plurality of heat dissipation fans 102, the radiator is located above the gas generator set, and the heat dissipation fans are located above the radiator;

[0057] The heat exchange unit 200 is arranged at the end of the gas generator set and away from the air intake side of the gas generator set. The heat exchange unit includes a high-temperature heat exchanger 201 and a low-temperature heat exchanger 202. One end of the high-temperature heat exchanger is connected to the intercooler of the engine, and the other end is connected to the radiator; one end of the low-temperature heat exchanger is connected to the intercooler of the gas generator set, and the other end is connected to the radiator;

[0058] The external circulating water pipeline of the low-temperature heat exchanger is connected to the external circulating water pipeline of the high-temperature heat exchanger, and the external circulating water first enters the low-temperature heat exchanger and then enters the high-temperature heat exchanger.

[0059] Preferably, both the high-temperature heat exchanger and the low-temperature heat exchanger are plate heat exchangers.

[0060] The above technical features dissipate heat from the medium of the chiller (cooling equipment for the gas generator set engine) through two heat exchangers, and dissipate heat from the engine compartment through a radiator with several cooling fans, and control the heat exchanger and the cooling fan through control logic to achieve efficient control of the heat exchanger and the cooling fan, and can adjust the heat exchange or cooling capacity according to the ambient temperature, reduce resource waste, and improve the operating stability of the gas generator set.

[0061] In the above technical features, the radiator with a radiator is used as the air-cooling cooling system on the top of the gas generator box, which is used when the unit is started or as a backup cooling system. The high-temperature heat exchanger and the low-temperature heat exchanger are used as an external circulating water cooling system, and an external cooling water cooling tower is used as a cooling source to cool the engine. Two sets of heat dissipation are used, one for use and one for backup. When one system is damaged due to external reasons or the cooling capacity is insufficient, it can be switched to another cooling system, thus avoiding emergency shutdown of the unit due to insufficient heat dissipation capacity.

[0062] In order to provide sufficient heat dissipation requirements and better control the corresponding cooling fans, such as Figure 4As shown; in one embodiment, 12 cooling fans are installed on the radiator, and the 12 cooling fans are arranged in two rows and six columns, and the six columns of fans are numbered sequentially: column A, column B, column C, column D, column E, and column F.

[0063] The above technical features can provide sufficient heat dissipation capacity through 12 heat dissipation fans, and through reasonable arrangement and numbering, the subsequent corresponding fans can be independently controlled to adapt to the change of heat dissipation capacity due to ambient temperature; because during the installation process, in order to avoid interfering with the exhaust device of the gas generator, the radiator and the heat dissipation fan are not directly opposite the engine (such as Figure 3 As shown), the heat dissipation can be improved to the greatest extent by controlling 12 cooling fans and 12 cooling fans.

[0064] In another embodiment, a heat dissipation method for a gas-fired generator set is provided, which is implemented by a heat dissipation system of the gas-fired generator set, such as Figure 5 As shown, the heat dissipation method includes the following steps:

[0065] Step S100, acquiring temperature information through a signal acquisition module, wherein the temperature information at least includes the temperature of the engine compartment and the temperature of the liquid outlet of the intercooler;

[0066] Step S200, the control module executes control logic according to the temperature information;

[0067] The control logic is as follows:

[0068] When the temperature of the engine compartment is lower than the first set temperature, the cooling medium of the intercooler enters the radiator and flows back to the intercooler after heat dissipation;

[0069] When the temperature of the engine compartment is greater than the first set temperature and less than the second set temperature, the cooling medium of the intercooler enters the radiator, flows back to the intercooler after heat dissipation, and at the same time, the cooling fans of corresponding quantity and position are started according to the temperature of the engine compartment;

[0070] When the temperature of the liquid outlet of the intercooler is greater than the third set temperature and less than the fourth set temperature, the cooling medium discharged from the radiator enters the low-temperature heat exchanger, and the cooling medium after heat exchange in the low-temperature heat exchanger flows back to the intercooler;

[0071] When the temperature of the liquid outlet is greater than the fourth set temperature and less than the temperature alarm value, the cooling medium discharged from the radiator enters the high-temperature heat exchanger, and the cooling medium after heat exchange in the high-temperature heat exchanger flows back to the intercooler;

[0072] When the temperature of the liquid outlet is greater than or equal to the temperature alarm value, the gas generator set stops working and issues an alarm message.

[0073] The above technical features can achieve precise heat dissipation control through precise temperature subdivision control, adopt different heat dissipation methods and heat dissipation capabilities for different temperatures, better utilize resources and reduce energy loss.

[0074] In order to better utilize the energy of the external device (such as a cooling tower) and reduce energy loss; in one embodiment, the control logic further includes:

[0075] When the low-temperature heat exchanger is executed, the cooling water from the external cooling tower enters the low-temperature heat exchanger and then flows back to the cooling tower;

[0076] When the high-temperature heat exchanger is executed, the cooling water from the external cooling tower enters the low-temperature heat exchanger, then enters the high-temperature heat exchanger, and then flows back to the cooling tower.

[0077] The above technical features enable the high-temperature heat exchanger and the low-temperature heat exchanger to rationally utilize external cold sources and reduce energy loss.

[0078] In order to better reduce energy consumption and avoid unnecessary start-up of cooling fans, in one embodiment, a method for starting corresponding numbers and positions of cooling fans according to the engine compartment temperature includes:

[0079] When the temperature of the engine compartment is greater than or equal to the second set temperature, all the cooling fans are started;

[0080] When the temperature of the engine compartment is greater than the first set temperature and less than the second set temperature, the area between the first set temperature and the second set temperature is divided into two unit areas, and the three unit areas are the first area and the second area in sequence;

[0081] When the temperature of the engine compartment is within the first range, turning on the fans of the D and E columns;

[0082] When the temperature of the engine compartment is within the second range, the fans of the C column, the D column, the E column and the F column are turned on.

[0083] The above technical features can achieve precise control of the number and position of cooling fans, providing sufficient cooling capacity under corresponding environments, avoiding energy waste, and being more adaptable to external environments.

[0084] When the cooling fan is fully turned on, in order to further accurately control the cooling fan and provide sufficient cooling capacity, in one embodiment, the cooling fan is a variable frequency axial flow fan, and the cooling fan operates at a fixed frequency when turned on. After all cooling fans are turned on, the operating frequency of the cooling fan changes with the temperature in the engine compartment.

[0085] Preferably, the operating frequency of the cooling fan varies with the temperature in the engine compartment according to the following relationship:

[0086]

[0087] Among them, f new is the real-time operating frequency of the cooling fan, f max is the high frequency value of the cooling fan, f min is the low frequency value of the cooling fan, f max >f min , T new is the real-time temperature in the engine compartment, T max is the temperature alarm value, T2 is the second set temperature, T max Greater than T2, ε is the adjustment coefficient.

[0088] The above-mentioned technical features can realize precise control of the cooling fan, change the cooling capacity by controlling the variable frequency fan, provide the most suitable cooling capacity, and better adapt to the change of ambient temperature through linear control.

[0089] The above description of the disclosed embodiments enables one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but rather to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A heat dissipation system for a gas generator set, characterized in that: include: A heat dissipation module, which dissipates heat from a water cooler and an engine compartment through a water-cooled or / and air-cooled radiator, wherein the water cooler is used to cool the engine of a gas generator set; The signal acquisition module includes a first temperature sensor for acquiring the temperature of the engine compartment and a second temperature sensor for acquiring the temperature of the water outlet of the water cooler; A control module, used for acquiring the signal from the signal acquisition module, and controlling the heat dissipation module according to the control logic after analysis; The heat dissipation module includes a heat dissipation unit acting on the engine compartment and a heat exchange unit acting on the water cooler.

2. A heat dissipation system for a gas generator set according to claim 1, characterized in that: The heat dissipation unit includes a radiator and a plurality of heat dissipation fans, the radiator is located above the gas generator set, and the heat dissipation fans are located above the radiator; The heat exchange unit is arranged at the end of the gas generator set and away from the air intake side of the gas generator set. The heat exchange unit includes a high-temperature heat exchanger and a low-temperature heat exchanger. One end of the high-temperature heat exchanger is connected to the intercooler of the engine, and the other end is connected to the radiator; one end of the low-temperature heat exchanger is connected to the intercooler of the gas generator set, and the other end is connected to the radiator; The external circulating water pipeline of the low-temperature heat exchanger is connected to the external circulating water pipeline of the high-temperature heat exchanger, and the external circulating water first enters the low-temperature heat exchanger and then enters the high-temperature heat exchanger.

3. The heat dissipation system of a gas generator set according to claim 1, characterized in that: The high-temperature heat exchanger and the low-temperature heat exchanger are both plate-type heat exchangers.

4. The heat dissipation system of a gas generator set according to claim 1, characterized in that: Twelve cooling fans are installed on the radiator, and the 12 cooling fans are arranged in two rows and six columns. The six columns of fans are numbered in sequence: column A, column B, column C, column D, column E, and column F.

5. A heat dissipation method for a gas generator set, characterized in that: The heat dissipation method is implemented by a heat dissipation system of a gas generator set according to any one of claims 1 to 4, and comprises: Acquiring temperature information, wherein the temperature information includes at least the temperature of the engine compartment and the temperature of the liquid outlet of the intercooler; executing control logic according to the temperature information; The control logic is as follows: When the temperature of the engine compartment is lower than the first set temperature, the cooling medium of the intercooler enters the radiator and flows back to the intercooler after heat dissipation; When the temperature of the engine compartment is greater than the first set temperature and less than the second set temperature, the cooling medium of the intercooler enters the radiator, flows back to the intercooler after heat dissipation, and at the same time, the cooling fans of corresponding quantity and position are started according to the temperature of the engine compartment; When the temperature of the liquid outlet of the intercooler is greater than the third set temperature and less than the fourth set temperature, the cooling medium discharged from the radiator enters the low-temperature heat exchanger, and the cooling medium after heat exchange in the low-temperature heat exchanger flows back to the intercooler; When the temperature of the liquid outlet is greater than the fourth set temperature and less than the temperature alarm value, the cooling medium discharged from the radiator enters the high-temperature heat exchanger, and the cooling medium after heat exchange in the high-temperature heat exchanger flows back to the intercooler; When the temperature of the liquid outlet is greater than or equal to the temperature alarm value, the gas generator set stops working and issues an alarm message.

6. A heat dissipation method for a gas generator set according to claim 5, characterized in that: The control logic also includes: When the low-temperature heat exchanger is executed, the cooling water from the external cooling tower enters the low-temperature heat exchanger and then flows back to the cooling tower; When the high-temperature heat exchanger is executed, the cooling water from the external cooling tower enters the low-temperature heat exchanger, then enters the high-temperature heat exchanger, and then flows back to the cooling tower.

7. A heat dissipation method for a gas generator set according to claim 5, characterized in that: The method for starting the cooling fans of corresponding quantity and position according to the engine compartment temperature includes: When the temperature of the engine compartment is greater than or equal to the second set temperature, all the cooling fans are started; When the temperature of the engine compartment is greater than the first set temperature and less than the second set temperature, the area between the first set temperature and the second set temperature is divided into two unit areas, and the three unit areas are the first area and the second area in sequence; When the temperature of the engine compartment is within the first range, turning on the fans of the D and E columns; When the temperature of the engine compartment is within the second range, the fans of the C column, the D column, the E column, and the F column are turned on.

8. A heat dissipation method for a gas generator set according to claim 7, characterized in that: The cooling fans are variable frequency axial flow fans, and all of the cooling fans operate at a fixed frequency when turned on. After all cooling fans are turned on, the operating frequency of the cooling fans changes with the temperature in the engine compartment.

9. A heat dissipation method for a gas generator set according to claim 7, characterized in that: The operating frequency of the cooling fan varies with the temperature in the engine compartment according to the following relationship: Among them, f new is the real-time operating frequency of the cooling fan, f max is the high frequency value of the cooling fan, f min is the low frequency value of the cooling fan, f max >f min , T new is the real-time temperature in the engine compartment, T max is the temperature alarm value, T2 is the second set temperature, T max Greater than T2, ε is the adjustment coefficient.

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