CN214887384U - Heat supply system based on gas turbine and central heat supply system for fracturing equipment - Google Patents

Abstract

The present disclosure provides a heating system based on a gas turbine and a central heating system for a fracturing plant, the heating system comprising: a heat source supplier including a gas turbine for driving at least one target device by providing a power source and configured to supply a first heat medium based on the gas turbine; the primary heat exchanger is connected with the heat source supplier to obtain a first heat medium, and the first heat medium and the intermediate medium are subjected to heat exchange to obtain a second heat medium; and the heat supply channel is respectively connected with the primary heat exchanger and the target equipment so as to distribute the second heat medium to at least one part of the target equipment and carry out secondary heat exchange to supply heat to the target equipment. The heat supply system realizes heat supply to target equipment through secondary heat exchange, reduces the use of high-temperature resistant parts, saves cost, and also forms a heat source supplier by using a gas turbine capable of driving the target equipment, so that an independent heat supply device is not required to be additionally added, and the cost is reduced.

Description

Heat supply system based on gas turbine and central heat supply system for fracturing equipment

Technical Field

Embodiments of the present disclosure relate to a gas turbine based heating system and a central heating system for a fracturing apparatus.

Background

Hydraulic fracturing techniques have been widely used in the oil and gas industry for oil and gas production. The fracturing technology is a method for pressing fracturing fluid (such as water-based fracturing fluid) into oil and gas reservoirs to form fractures by utilizing the action of the fluid pressure in the oil or gas production process.

In the current stage of well site fracturing operation, a diesel generating set is mostly adopted to provide power, an electric driving fracturing mode in which a gas turbine generating set provides power and a turbine fracturing mode in which a gas turbine directly drives the gas turbine are used as emerging applications in the field of well site fracturing, and compared with the former, the oil well site fracturing method has the advantages of being large in output power, high in energy density, low in noise, low in emission and the like.

SUMMERY OF THE UTILITY MODEL

At least one embodiment of the present disclosure provides a gas turbine-based heating system, including: a heat source supplier including a gas turbine for driving at least one target device by providing a power source and configured to supply a first heat medium based on the gas turbine; a primary heat exchanger configured to obtain an intermediate medium, wherein the primary heat exchanger is connected to the heat source supplier to obtain the first heat medium, so that the first heat medium and the intermediate medium are subjected to heat exchange to obtain a second heat medium; and the heat supply channel is respectively connected with the primary heat exchanger and the at least one target device so as to distribute the second heat medium to at least one part of the at least one target device and carry out secondary heat exchange, so as to supply heat to the at least one target device.

For example, in a heating system provided in at least one embodiment of the present disclosure, the primary heat exchanger includes: a first port configured to access the first thermal medium; a second port configured to acquire the intermediate medium; a third port configured to output the second thermal medium to dispense the second thermal medium to the at least one site of the at least one target device.

For example, in at least one embodiment of the present disclosure, the heating system further includes a pressure boosting device, wherein the pressure boosting device is disposed between the first port of the primary heat exchanger and the heat source supplier, or the pressure boosting device is disposed between the third port of the primary heat exchanger and an end of the heating passage near the primary heat exchanger.

For example, in a heating system provided in at least one embodiment of the present disclosure, the first heat medium is a hot air flow, the intermediate medium is water, the second heat medium is hot water, a temperature of the first heat medium is higher than a temperature of the intermediate medium, and a temperature of the second heat medium is higher than the temperature of the intermediate medium and lower than the temperature of the first heat medium.

For example, in a heating system provided in at least one embodiment of the present disclosure, the gas turbine includes: a compressor configured to take in air for combustion and compress the air to generate compressed air and output a first portion of the compressed air to the primary heat exchanger, the first heat medium including the first portion of the compressed air; a gas chamber configured to take fuel, wherein the gas chamber is connected to the compressor to take a second portion of the compressed air and co-combust the second portion of the compressed air and the fuel to produce gas; and the turbine is connected with the gas chamber to obtain the gas and perform expansion work to output first exhaust.

For example, in a heating system provided in at least one embodiment of the present disclosure, the gas turbine includes: a compressor configured to take in air for combustion and compress the air to generate compressed air; a gas chamber configured to take fuel, wherein the gas chamber is connected with the compressor to take the compressed air and mix and combust the compressed air and the fuel to generate gas; the turbine is connected with the gas chamber to obtain the gas and perform expansion work to output first exhaust gas to the primary heat exchanger, and the first heat medium comprises the first exhaust gas.

For example, in a heating system provided in at least one embodiment of the present disclosure, the heat source supplier further includes a waste heat boiler, and the gas turbine includes: a compressor configured to take in air for combustion and compress the air to generate compressed air; a gas chamber configured to take fuel, wherein the gas chamber is connected with the compressor to take the compressed air and mix and combust the compressed air and the fuel to generate gas; the turbine is connected with the gas chamber to obtain the gas and perform expansion work to output first exhaust gas; the exhaust-heat boiler is connected with the turbine to obtain the first exhaust gas and generate first steam, and outputs the first steam to the primary heat exchanger, and the first heat medium comprises the first steam.

For example, in a heating system provided in at least one embodiment of the present disclosure, the heat source supplier further includes a waste heat boiler and a steam turbine, and the gas turbine includes: a compressor configured to take in air for combustion and compress the air to generate compressed air; a gas chamber configured to take fuel, wherein the gas chamber is connected with the compressor to take the compressed air, and the compressed air and the fuel are mixed and combusted to generate gas; the turbine is connected with the gas chamber to obtain the gas and perform expansion work to output first exhaust gas; the waste heat boiler is connected with the turbine to obtain the first exhaust gas and generate first steam, the turbine is connected with the waste heat boiler to obtain the first steam and perform expansion work, a certain proportion of second steam extracted from one stage of the turbine is output to the primary heat exchanger, and the first heat medium comprises the second steam.

For example, in a heating system provided in at least one embodiment of the present disclosure, the steam turbine is connected to the at least one target device through a generator to electrically drive the at least one target device, or the steam turbine is connected to the at least one target device to power the at least one target device.

For example, in a heating system provided in at least one embodiment of the present disclosure, the turbine of the gas turbine is connected to the at least one target device through a generator to electrically drive the at least one target device, or the turbine of the gas turbine is connected to the at least one target device to power the at least one target device.

For example, in a heating system provided in at least one embodiment of the present disclosure, the heating system further includes a first flow controller disposed between the heat source supplier and the primary heat exchanger, so that the first heat medium output by the heat source supplier enters the primary heat exchanger at a set flow rate.

For example, in a heating system provided in at least one embodiment of the present disclosure, the heating system further includes at least one second flow controller disposed between the at least one target device and the primary heat exchanger, so that the second heat medium output by the primary heat exchanger reaches the at least one location of the at least one target device at a set flow rate, respectively.

For example, in a heating system provided in at least one embodiment of the present disclosure, the at least one target device includes a fracturing device.

For example, in a heating system provided in at least one embodiment of the present disclosure, the at least one portion of the at least one target device includes one or more of the following: a fracturing fluid part, a gas turbine air inlet anti-icing part, a gas turbine lubricating oil part, a generator lubricating oil part, a fuel part and a control room heating part.

For example, at least one embodiment of the present disclosure provides a heating system further including a water return channel, where the water return channel is respectively communicated with the output port of each of the at least one portion and the primary heat exchanger, so as to recover the medium, which is output by the output port of the portion and is obtained through the secondary heat exchange, to the primary heat exchanger.

At least one embodiment of the present disclosure also provides a central heating system for a fracturing apparatus, including: a heat source supplier including a gas turbine for driving the fracturing device by providing a power source and configured to supply a first heat medium based on the gas turbine; a primary heat exchanger configured to obtain an intermediate medium, wherein the primary heat exchanger is connected to the heat source supplier to obtain the first heat medium, so that the first heat medium and the intermediate medium are subjected to heat exchange to obtain a second heat medium; and the heat supply channel is respectively connected with the primary heat exchanger and the fracturing equipment so as to distribute the second heat medium to a plurality of parts of the fracturing equipment and carry out secondary heat exchange so as to supply heat to the fracturing equipment.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic diagram of a gas turbine based heating system according to some embodiments of the present disclosure;

FIG. 2 is a schematic diagram of a heat supply system in which a heat source supplier is a gas turbine, according to some embodiments of the present disclosure;

FIG. 3 is a schematic diagram illustrating a heat supply system in which a heat source supplier is a gas turbine according to further embodiments of the present disclosure;

FIG. 4 is a schematic diagram of a heat supply system including a gas turbine and a waste heat boiler with a heat source provider according to some embodiments of the present disclosure;

FIG. 5 is a schematic diagram of the components of a heating system in which a heat source supplier includes a gas turbine, a waste heat boiler, and a steam turbine according to some embodiments of the present disclosure;

fig. 6 is a schematic diagram of a heating system including a first flow controller and a second flow controller according to some embodiments of the present disclosure;

FIG. 7a is a schematic diagram of a heating system incorporating the addition of a first flow controller in the example of FIG. 2 according to some embodiments of the present disclosure;

FIG. 7b is a schematic diagram of a heating system incorporating the first flow controller in the example of FIG. 3 according to some embodiments of the present disclosure;

FIG. 7c is a schematic diagram of a heating system incorporating the first flow controller in the example of FIG. 4 according to some embodiments of the present disclosure; and

fig. 7d is a schematic diagram of a heating system with a first flow controller added in the example of fig. 5 according to some embodiments of the disclosure.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure, and it is obvious that the described embodiments are only a part of the embodiments of the present disclosure, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Unless otherwise defined, all terms (including technical and scientific terms) used in the embodiments of the present disclosure have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

The use of "first," "second," and similar terms in the embodiments of the disclosure is not intended to indicate any order, quantity, or importance, but rather to distinguish one element from another. The use of the terms "a" and "an" or "the" and similar referents do not denote a limitation of quantity, but rather denote the presence of at least one. Likewise, the word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

At present, the electrically-driven fracturing of power supplied by a gas turbine generator set means that the gas turbine drives fracturing equipment through power supplied by a generator, and the turbine fracturing directly driven by the gas turbine means that the gas turbine is directly connected with the fracturing equipment and directly drives the fracturing equipment through power. For electrically driven fracturing for supplying power to a gas turbine generator set and turbine fracturing for directly driving the gas turbine, on one hand, a large amount of high-temperature flue gas is directly discharged into the atmosphere after the gas turbine burns fuel, so that the environment is influenced, energy waste is caused, and the heat efficiency of the unit is low; on the other hand, when the environmental temperature is relatively low, a large amount of equipment for well site fracturing operation needs to independently burn fuel to produce hot water or steam for heat supply, or adopts electric power for heat supply, so that the energy consumption is increased, and the cost is increased.

At least one embodiment of the present disclosure provides a gas turbine-based heating system, including: a heat source supplier including a gas turbine for driving at least one target device by providing a power source and configured to supply a first heat medium based on the gas turbine; the primary heat exchanger is connected with the heat source supplier to obtain a first heat medium, so that the first heat medium and the intermediate medium are subjected to heat exchange to obtain a second heat medium; and the heat supply channel is respectively connected with the primary heat exchanger and the at least one target device so as to distribute the second heat medium to at least one part of the at least one target device and carry out secondary heat exchange so as to supply heat to the at least one target device.

The gas turbine-based heating system according to the above-described embodiment of the present disclosure performs first heat exchange on the collected first heat medium and the intermediate medium, and then redistributes the second heat medium obtained through the first heat exchange to each hot part of the target equipment (e.g., the well site stimulation equipment) to perform second heat exchange, so as to heat the target equipment, which may reduce the use of high temperature resistant components and save cost. Moreover, the gas turbine capable of driving the target equipment is used as the heat source supplier or is used as a part of the heat source supplier, so that the target equipment does not need to additionally add a separate heating device for heating, the increase of energy consumption is avoided, and the cost is reduced.

For example, in at least one embodiment of the present disclosure, when the gas turbine based heating system is adapted for use in wellsite fracturing equipment, the gas turbine based heating system described above may be used to heat multiple heat-using locations of the fracturing equipment, forming a centralized heating system for the fracturing equipment.

Embodiments of the present disclosure and examples thereof are described in detail below with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of a gas turbine based heating system according to some embodiments of the present disclosure.

For example, as shown in fig. 1, a gas turbine-based heating system includes a heat source supplier 110, a primary heat exchanger 120, and a heating path 130.

The heat source supplier 110 includes a gas turbine 111, and the gas turbine 111 may be configured to drive at least one target apparatus 200 by providing a power source. The heat source supplier 110 is configured to supply the first thermal medium a1 based on the gas turbine 111.

The primary heat exchanger 120 is configured to take the intermediate medium a0, the primary heat exchanger 120 is connected to the heat source supplier 110, and takes the first thermal medium a1, so that the first thermal medium a1 and the intermediate medium a0 obtain the second thermal medium a2 through heat exchange.

The heat supply path 130 is connected to the primary heat exchanger 120 and the at least one target apparatus 200, respectively, to distribute the second heat medium a2 to the at least one location 201 of the at least one target apparatus 200 and perform secondary heat exchange to supply heat to the at least one target apparatus 200.

In some examples, the first thermal medium a1 is a hot gas stream, the intermediate medium a0 is water, and the second thermal medium a2 is hot water. Of course, this is merely exemplary and not a limitation of the present disclosure.

In some examples, the temperature of the first thermal medium a1 is greater than the temperature of the intermediate medium a0, and the temperature of the second thermal medium a2 is greater than the temperature of the intermediate medium a0 and less than the temperature of the first thermal medium a 1.

In some examples, the first thermal medium a1 may enter the primary heat exchanger 120 substantially simultaneously with the intermediate medium a0 and the first thermal medium a1 exchanges heat with the intermediate medium a0, producing a second thermal medium a2 (e.g., hot water) having a temperature and pressure.

Therefore, the heating system of at least one embodiment of the disclosure can realize heating of the target device through secondary heat exchange, use of high-temperature resistant components can be reduced, and cost is saved.

It should be noted that the above-mentioned "the heat source supplier 110 is configured to supply the first heat medium a1 based on the gas turbine 111" may mean that the gas turbine 111 is directly used as a heat source supplier to supply the first heat medium a1, or that the gas turbine 111 is used to cooperate with other components to form a heat source supplier to supply the first heat medium a1, which is not limited by the present disclosure, and can be freely selected or adjusted according to practical situations, and the following examples will be explained in detail.

It should also be noted that reference to "heat" in the thermal medium described herein does not refer to an absolute range of temperature values, but rather refers to a temperature that is relatively higher than the current ambient temperature or that is relatively higher than the location of the target device at the current ambient temperature, so that heat can be provided to the location of the target device. For example, the temperatures of the first heat medium and the second heat medium are both higher than the temperature of a portion of the target device that does not exchange heat. However, the present disclosure does not limit the specific data such as the temperature of the thermal medium and the current ambient temperature, and may be determined according to the actual situation, which is not described herein.

From the above, at least one embodiment of the present disclosure can generate a heat medium around a gas turbine that may otherwise drive target equipment (e.g., wellsite fracturing equipment) to meet the application of fracturing operation under low temperature conditions, so that the target equipment does not need to be additionally provided with a separate heat supply device for supplying heat, thereby reducing the cost.

In some examples, the at least one target device comprises a fracturing device, for example, the fracturing device comprises a hydraulic fracturing device. It should be noted that this is merely an example, in addition, the target device may also be a device in other reasonable application scenarios, which is not limited in the present disclosure, and for clarity and conciseness of the present disclosure, some embodiments of the present disclosure are described by taking a hydraulic fracturing device as an example, and are not described in detail in other types of devices.

In some examples, the at least one portion of the target device 200 includes one or more of: the fracturing fluid part, the gas inlet anti-icing part of the gas turbine, the lubricating oil part of the generator, the fuel part and the heating part of the control room. Of course, this is merely exemplary and not a limitation of the present disclosure. For example, as shown in fig. 1, at least one site 201 of target device 200 includes a plurality of sites 201.

In some examples, the gas turbine 111 may be coupled to the target plant 200 via a generator (not shown) to enable electric drive of the target plant 200. For example, electrically driven fracturing powered by gas turbine gensets.

In other examples, the gas turbine 111 may be directly coupled to the target plant 200 to power the target plant 200. Such as turbine fracturing driven directly by a gas turbine.

It can be seen that some embodiments of the present disclosure can implement centralized heat supply for, for example, a hydraulic fracturing apparatus, that is, when the ambient temperature is low, implement centralized heat supply for multiple locations of the hydraulic fracturing apparatus, such as providing heat for a fracturing fluid, gas turbine lubricating oil, generator lubricating oil, gas turbine intake anti-icing, fuel, a control room, and other working media or locations (which may be collectively referred to as locations, for example) that need to be heated.

In some examples, for the fracturing fluids mentioned herein, it may be based on a water-based fracturing fluid consisting essentially of a pad fluid, a sand-carrying fluid, a displacement fluid, these three liquid solvents including a clear water river liquid additive. Of course, this is merely exemplary and not a limitation of the present disclosure.

In the example of fig. 1, the primary heat exchanger 120 includes a first port 121, a second port 122, and a third port 123. The first port 121 is configured to take a first thermal medium a 1. The second port 122 is configured to capture intermediate medium a 0. The third port 123 is configured to output a second thermal medium a2 to dispense the second thermal medium to at least one site 201 of at least one target device 200.

In some examples, the heating system further includes a pressure increasing device (not shown) to increase the pressure of the second thermal medium a2 output from the primary heat exchanger 120, so that the second thermal medium a2 smoothly and efficiently reaches the multiple locations 201 of the target apparatus 200, and thus central heating of the multiple locations 201 is achieved.

For example, the pressure increasing device is provided between the first port 121 of the primary heat exchanger 120 and the heat source supplier 110, and the pressure increasing action of the second heat medium a2 is achieved by first increasing the pressure of the first heat medium a 1. For another example, the pressure increasing device is disposed between the third port 123 of the primary heat exchanger 120 and the end of the heat supply passage 130 close to the primary heat exchanger 120, and directly performs the pressure increasing action of the second heat medium a 2.

FIG. 2 is a schematic diagram of a heat supply system in which a heat source supplier is a gas turbine according to some embodiments of the present disclosure.

For example, as shown in fig. 2, the gas turbine 111 of the heat source supplier 110 includes a compressor 1111a, a gas chamber 1112a, and a turbine 1113 a.

In some examples, the compressor 1111a is configured to intake combustion air and compress it to generate compressed air and output a first portion of the compressed air (e.g., the first portion of the compressed air is denoted as a11) to the primary heat exchanger 120, and the first thermal medium a1 includes the first portion of the compressed air a 11. The combustion chamber 1112a is configured to take fuel, and the combustion chamber 1112a is connected to the compressor 1111a to take a second portion of the compressed air (not shown) and mix and combust the second portion of the compressed air and the fuel to produce combustion gases. The turbine 1113a is coupled to the gas chamber 1112a to capture the gas and perform expansion work to output an exhaust P1. For example, the compressed air is clean air, i.e. the first part of the compressed air is also clean air. For example, the second portion of the compressed air is the remaining portion of the compressed air excluding the first portion.

FIG. 3 is a schematic diagram of a heat supply system in which a heat source supplier is a gas turbine according to other embodiments of the present disclosure.

For example, as shown in fig. 3, the gas turbine 111 of the heat source supplier 110 includes a compressor 1111b, a gas chamber 1112b, and a turbine 1113 b.

In some examples, the compressor 1111b is configured to intake air for combustion and compress it to generate compressed air. The gas chamber 1112b is configured to take fuel, and the gas chamber 1112b is connected to the compressor 1111b to take the compressed air and mix and combust the compressed air and fuel to generate gas (not shown). The turbine 1113b is connected to the gas chamber 1112b to take the gas and perform expansion work to output the exhaust gas P2 to the primary heat exchanger 120, and the first thermal medium a1 includes the exhaust gas P2.

For example, the exhaust P2 is a high temperature exhaust and the temperature of the exhaust P2 is approximately 400-600 ℃.

Fig. 4 is a schematic diagram of the components of a heating system with a heat source supplier including a gas turbine and a waste heat boiler according to some embodiments of the disclosure.

For example, as shown in fig. 4, the heat source supplier 110 further includes a waste heat boiler 112 a. The gas turbine 111 of the heat source supplier 110 includes a compressor 1111c, a gas chamber 1112c, and a turbine 1113 c.

In some examples, compressor 1111c is configured to intake combustion air and compress it to produce compressed air. The gas chamber 1112c is configured to take fuel, and the gas chamber 1112c is connected to the compressor 1111c to take the compressed air and mix and combust the compressed air and fuel to generate gas. Turbine 1113c is coupled to combustion chamber 1112c to capture the combustion gases and perform expansion work to output exhaust P3. The waste heat boiler 112a is connected to a turbine 1113c to take exhaust P3 and generate steam Z1 and output steam Z1 to the primary heat exchanger 120, the first thermal medium A1 comprising steam Z1.

For example, the exhaust P3 is a high temperature exhaust and the temperature of the exhaust P3 is approximately 400-600 ℃.

Fig. 5 is a schematic diagram illustrating a heat supply system including a gas turbine, a waste heat boiler, and a steam turbine in which a heat source supplier according to some embodiments of the present disclosure is provided.

For example, as shown in fig. 5, the heat source supplier 110 further includes a waste heat boiler 112b and a steam turbine 113. The gas turbine 111 of the heat source supplier 110 includes a compressor 1111d, a gas chamber 1112d, and a turbine 1113 d.

In some examples, the compressor 1111d is configured to intake air for combustion and compress it to generate compressed air. The gas chamber 1112d is configured to take fuel, and the gas chamber 1112d is connected to the compressor 1111d to take the compressed air, mix the compressed air and fuel and combust them to generate gas. Turbine 1113d is coupled to combustion chamber 1112d to capture the combustion gases and perform expansion work to output exhaust P4. The exhaust heat boiler 112b is connected to a turbine 1113d to obtain exhaust gas P4 and generate steam Z2, the turbine 113 is connected to the exhaust heat boiler 112b to obtain steam Z2 and perform expansion work, and a certain proportion of the steam extracted from one stage of the turbine 113 (for example, the extracted certain proportion of the steam is referred to as steam Z3) is output to the primary heat exchanger 120, and the first heat medium includes steam Z3.

For example, the exhaust P4 is a high temperature exhaust and the temperature of the exhaust P4 is approximately 400-600 ℃.

For example, in the example of fig. 2-5, the turbine 1113a (or the turbine 1113b or the turbine 1113c or the turbine 1113d) of the gas turbine 111 may be coupled to the target plant 200 via a generator to electrically drive the target plant 200. For another example, in the examples of fig. 2 to 5, the turbine 1113a (or the turbine 1113b or the turbine 1113c or the turbine 1113d) of the gas turbine may also be directly connected to the target equipment 200 to power drive the target equipment 200, which is not limited by this disclosure, as long as the turbine driving of the target equipment 200 by the gas turbine 111 is achieved, and thus, the description is omitted here.

For example, as shown in fig. 5, the turbine 113 may be connected to the target equipment 200 through a generator to electrically drive the target equipment 200. The turbine 113 may also be directly connected to the target equipment 200 to power the target equipment 200. It should be noted that the steam turbine 113 in the example of fig. 5 of the present disclosure is not limited to directly or indirectly driving the target equipment 200, and may also drive other equipment, as the present disclosure does not limit this, depending on the actual situation.

In some examples, when the turbine 113 directly or indirectly drives the target device 200, the turbine 1113d of the gas turbine 111 may drive the target device 200 at the same time, or may not drive the target device 200, which is not limited by the present disclosure as long as the driving requirement of the target device 200 can be met, and is not described herein again.

As described above, some embodiments of the present disclosure may provide various methods around the gas turbine 111 (e.g., a wellsite gas turbine) to generate various forms of thermal media to meet the application of fracturing operations at low temperature conditions, i.e., may implement a centralized heating method, for example, for hydraulic fracturing.

Fig. 6 is a schematic diagram of a heating system including a first flow controller and a second flow controller according to some embodiments of the present disclosure.

For example, as shown in fig. 6, the heating system further includes a flow controller 150 (which may be referred to as a first flow controller, for example), and the flow controller 150 is disposed between the heat source supplier 110 and the primary heat exchanger 120, so that the first heat medium a1 output by the heat source supplier 110 enters the primary heat exchanger 120 at a set flow rate, and the control of the heat exchange amount during the primary heat exchange in the primary heat exchanger 120 is realized.

For example, as shown in fig. 6, the heating system further includes at least one flow controller 160 (which may be referred to as a second flow controller, for example), and the flow controller 160 is disposed between at least one target apparatus 200 and the primary heat exchanger 120, so that the second heat medium a2 output by the primary heat exchanger 120 reaches at least one portion 201 of the target apparatus 200 at a set flow rate, respectively.

In some examples, the number of the flow controllers 160 is the same as the number of the portions 201 of the target apparatus 200 to be heated, and the flow controllers 160 are in one-to-one correspondence with the portions 201 to control the respective flow rates and pressures of the second heat medium a2 reaching the respective portions 201, so as to control the heat exchange amount during the secondary heat exchange of the portions 201 and adjust the heating temperature of the portions 201.

Fig. 7a is a schematic diagram of a heating system with a first flow controller added in the example of fig. 2 according to some embodiments of the present disclosure. Fig. 7b is a schematic diagram of a heating system with a first flow controller added in the example of fig. 3 according to some embodiments of the present disclosure. Fig. 7c is a schematic diagram of a heating system with a first flow controller added in the example of fig. 4 according to some embodiments of the disclosure. Fig. 7d is a schematic diagram of a heating system with a first flow controller added in the example of fig. 5 according to some embodiments of the disclosure.

For example, for the example of FIG. 2, a first flow controller (i.e., flow controller 150a in FIG. 7 a) is provided between compressor 1111c and primary heat exchanger 120 of gas turbine 111. For example, for the example of FIG. 3, a first flow controller (i.e., flow controller 150b of FIG. 7 b) is provided between turbine 1113b and primary heat exchanger 120 of gas turbine 111. For example, for the example of FIG. 4, a first flow controller (i.e., flow controller 150c of FIG. 7 c) is provided between heat recovery steam generator 112a and primary heat exchanger 120. For example, for the example of FIG. 5, a first flow controller (i.e., flow controller 150d in FIG. 7 d) is provided between the steam turbine 113 and the primary heat exchanger 120.

For example, as shown in fig. 1 to 6, the heating system further includes a water return channel 140, and the water return channel 140 is respectively communicated with the output port (not shown) of each portion 201 and the primary heat exchanger 120, so as to recover the medium (for example, water return) obtained through the secondary heat exchange, output by the output port of the portion 201, to the primary heat exchanger 120 for continuous circulation.

Hereinafter, an operation method of a heating system provided in some embodiments of the present disclosure will be described,

for example, for the example of fig. 7a, the method of operation includes the steps of: in the electrically driven fracturing or the turbine fracturing driven by the gas turbine directly, in which the gas turbine generator set provides power, the gas turbine 111 sucks in the combustion air and compresses the combustion air to generate high-temperature and high-pressure compressed air, a part of the high-temperature and high-pressure compressed air may also be used as a first heat medium and enter the primary heat exchanger 120, and exchanges heat with water simultaneously entering the primary heat exchanger 120 to generate hot water with a certain temperature and pressure, and the hot water is used as a second heat medium and exchanges heat with each heat-consuming part 201 simultaneously to provide heat for each part 201, for example, but not limited to: heating and insulating fracturing fluid, heating gas turbine lubricating oil, heating generator lubricating oil, providing heat for gas turbine intake anti-icing, heating fuel used by the gas turbine, providing heat for control room heating and providing heat for other parts of a well site needing heat.

For example, for the example of fig. 7b, the method of operation includes the steps of: in the electrically driven fracturing or the turbine fracturing driven by the gas turbine generator set to provide electricity, the gas turbine 111 burns fuel to generate high-temperature and high-pressure gas, the high-temperature and high-pressure gas enters the turbine 1113b to expand and work and then discharges high-temperature exhaust gas P2, the high-temperature exhaust gas P2 serves as a first heat medium and enters the primary heat exchanger 120, and exchanges heat with water simultaneously entering the primary heat exchanger 120 to generate hot water with certain temperature and pressure, and the hot water serves as a second heat medium and exchanges heat with each heat utilization part 201 to provide heat for each part 201, for example, but not limited to: heating and insulating fracturing fluid, heating gas turbine lubricating oil, heating generator lubricating oil, providing heat for gas turbine intake anti-icing, heating fuel used by the gas turbine, providing heat for control room heating and providing heat for other parts of a well site needing heat.

For example, for the example of fig. 7c, the method of operation includes the steps of: in the electrically driven fracturing or the turbine fracturing driven by the gas turbine generator set to provide electricity, the gas turbine 111 burns fuel to generate high-temperature and high-pressure gas, the high-temperature and high-pressure gas enters the turbine 1113c to expand and work and then discharges high-temperature exhaust gas P3, the high-temperature exhaust gas P3 enters the waste heat boiler 112a to generate high-temperature steam Z1 with certain temperature and pressure, the high-temperature steam Z1 serves as a first heat medium and enters the primary heat exchanger 120, and exchanges heat with water simultaneously entering the primary heat exchanger 120 to generate hot water with certain temperature and pressure, and the hot water serves as a second heat medium and exchanges heat with the heat consumption locations 201 to provide heat for the locations 201, such as but not limited to: heating and insulating fracturing fluid, heating gas turbine lubricating oil, heating generator lubricating oil, providing heat for gas turbine intake anti-icing, heating fuel used by the gas turbine, providing heat for control room heating and providing heat for other parts of a well site needing heat.

For example, for the example of fig. 7d, the method of operation includes the steps of: in the electric driving fracturing or the turbine fracturing driven by the gas turbine directly, the gas turbine 111 burns fuel to generate high-temperature and high-pressure gas, the high-temperature and high-pressure gas enters the turbine 1113d to expand and do work and then is discharged as high-temperature exhaust gas P4, the high-temperature exhaust gas P4 enters the waste heat boiler 112b to generate high-temperature steam Z2 with certain temperature and pressure, and the high-temperature steam Z2 enters the turbine 113 to expand and do work and drives the generator to drive the target equipment 200 or other equipment or directly drive the target equipment 200 or other equipment. At this time, a certain proportion of the steam Z3 may be extracted from a certain stage in the turbine 113, and enters the primary heat exchanger 120 as a first heat medium (i.e. high-temperature steam entering the turbine to do work), and exchanges heat with water simultaneously entering the primary heat exchanger 120 to generate hot water with a certain temperature and pressure, and the hot water simultaneously exchanges heat with each heat-using portion 201 as a second heat medium to provide heat for each portion 201, for example, but not limited to: heating and insulating fracturing fluid, heating gas turbine lubricating oil, heating generator lubricating oil, providing heat for gas turbine intake anti-icing, heating fuel used by the gas turbine, providing heat for control room heating and providing heat for other parts of a well site needing heat.

The following points need to be explained:

(1) the drawings of the embodiments of the disclosure only relate to the structures related to the embodiments of the disclosure, and other structures can refer to common designs.

(2) Without conflict, embodiments of the present disclosure and features of the embodiments may be combined with each other to arrive at new embodiments.

The above description is only a specific embodiment of the present disclosure, but the scope of the present disclosure is not limited thereto, and the scope of the present disclosure should be subject to the scope of the claims.

Claims (17)

1. A gas turbine based heating system, comprising:

a heat source supplier including a gas turbine for driving at least one target device by providing a power source and configured to supply a first heat medium based on the gas turbine;

a primary heat exchanger configured to obtain an intermediate medium, wherein the primary heat exchanger is connected to the heat source supplier to obtain the first heat medium, so that the first heat medium and the intermediate medium are subjected to heat exchange to obtain a second heat medium;

and the heat supply channel is respectively connected with the primary heat exchanger and the at least one target device so as to distribute the second heat medium to at least one part of the at least one target device and carry out secondary heat exchange, so as to supply heat to the at least one target device.

2. A heating system as claimed in claim 1, wherein the primary heat exchanger comprises:

a first port configured to access the first thermal medium;

a second port configured to acquire the intermediate medium;

a third port configured to output the second thermal medium to dispense the second thermal medium to the at least one site of the at least one target device.

3. A heating system as claimed in claim 2, further comprising a pressure boosting device, wherein the pressure boosting device is provided between the first port of the primary heat exchanger and the heat source supply, or wherein the pressure boosting device is provided between the third port of the primary heat exchanger and an end of the heating channel adjacent the primary heat exchanger.

4. A heating system according to claim 1, wherein said first heat medium is a hot gas stream, said intermediate medium is water, and said second heat medium is hot water,

the temperature of the first heat medium is higher than the temperature of the intermediate medium, and the temperature of the second heat medium is higher than the temperature of the intermediate medium and lower than the temperature of the first heat medium.

5. The heating system of claim 1, wherein the gas turbine comprises:

a compressor configured to take in air for combustion and compress the air to generate compressed air and output a first portion of the compressed air to the primary heat exchanger, the first heat medium including the first portion of the compressed air;

a gas chamber configured to take fuel, wherein the gas chamber is connected to the compressor to take a second portion of the compressed air and co-combust the second portion of the compressed air and the fuel to produce gas;

and the turbine is connected with the gas chamber to obtain the gas and perform expansion work to output first exhaust.

6. The heating system of claim 1, wherein the gas turbine comprises:

a compressor configured to take in air for combustion and compress the air to generate compressed air;

a gas chamber configured to take fuel, wherein the gas chamber is connected with the compressor to take the compressed air and mix and combust the compressed air and the fuel to generate gas;

the turbine is connected with the gas chamber to obtain the gas and perform expansion work to output first exhaust gas to the primary heat exchanger, and the first heat medium comprises the first exhaust gas.

7. The heating system of claim 1, wherein the heat source provider further comprises a waste heat boiler, the gas turbine comprising:

a compressor configured to take in air for combustion and compress the air to generate compressed air;

a gas chamber configured to take fuel, wherein the gas chamber is connected with the compressor to take the compressed air and mix and combust the compressed air and the fuel to generate gas;

the turbine is connected with the gas chamber to obtain the gas and perform expansion work to output first exhaust gas;

the exhaust-heat boiler is connected with the turbine to obtain the first exhaust gas and generate first steam, and outputs the first steam to the primary heat exchanger, and the first heat medium comprises the first steam.

8. A heating system according to claim 1, wherein said heat source supplier further comprises a waste heat boiler and a steam turbine, said gas turbine comprising:

a compressor configured to take in air for combustion and compress the air to generate compressed air;

a gas chamber configured to take fuel, wherein the gas chamber is connected with the compressor to take the compressed air, and the compressed air and the fuel are mixed and combusted to generate gas;

the turbine is connected with the gas chamber to obtain the gas and perform expansion work to output first exhaust gas;

the waste heat boiler is connected with the turbine to obtain the first exhaust gas and generate first steam, the turbine is connected with the waste heat boiler to obtain the first steam and perform expansion work, a certain proportion of second steam extracted from one stage of the turbine is output to the primary heat exchanger, and the first heat medium comprises the second steam.

9. A heating system according to claim 8, wherein said turbine is connected to said at least one target device via a generator for electrically driving said at least one target device, or wherein said turbine is connected to said at least one target device for powering said at least one target device.

10. A heating system according to any of claims 5 to 9, wherein said turbine of said gas turbine is connected to said at least one target plant via a generator for electrically driving said at least one target plant, or wherein said turbine of said gas turbine is connected to said at least one target plant for powering said at least one target plant.

11. The heating system according to claim 1, further comprising a first flow controller provided between the heat source supplier and the primary heat exchanger so that the first heat medium output from the heat source supplier enters the primary heat exchanger at a set flow rate.

12. The heating system according to claim 1, further comprising at least one second flow controller provided between the at least one target apparatus and the primary heat exchanger, so that the second heat medium output from the primary heat exchanger reaches the at least one portion of the at least one target apparatus at a set flow rate, respectively.

13. A heating system as claimed in claim 12, wherein said at least one second flow controller is in one-to-one correspondence with said at least one location.

14. A heating system according to any of claims 1 to 9 and 11 to 13, wherein the at least one target device comprises a fracturing device.

15. A heating system according to claim 14, wherein said at least one location of said at least one target device comprises one or more of: a fracturing fluid part, a gas turbine air inlet anti-icing part, a gas turbine lubricating oil part, a generator lubricating oil part, a fuel part and a control room heating part.

16. A heating system as claimed in any one of claims 1 to 9, 11 to 13, and 15, further comprising a return water channel in communication with an output port of each of said at least one location and said primary heat exchanger, respectively, for recycling media from said output port of said location that has undergone said secondary heat exchange to said primary heat exchanger.

17. A central heating system for a fracturing apparatus, comprising:

a heat source supplier including a gas turbine for driving the fracturing device by providing a power source and configured to supply a first heat medium based on the gas turbine;

a primary heat exchanger configured to obtain an intermediate medium, wherein the primary heat exchanger is connected to the heat source supplier to obtain the first heat medium, so that the first heat medium and the intermediate medium are subjected to heat exchange to obtain a second heat medium;

and the heat supply channel is respectively connected with the primary heat exchanger and the fracturing equipment so as to distribute the second heat medium to a plurality of parts of the fracturing equipment and carry out secondary heat exchange so as to supply heat to the fracturing equipment.

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