Comprehensive cooling system for fracturing truck protection

Abstract

The invention is applicable to the technical field of fracturing truck cooling, and provides a comprehensive cooling system for fracturing truck protection, which comprises a collision cooling box, and a collision cooling plate group, a secondary collision mixing box and a condensation water return cylinder are mounted in the collision cooling box; the collision cooling plate group comprises a plurality of discharge nozzles, the plurality of discharge nozzles are divided into two groups, the plurality of discharge nozzles in one group are used for atomizing the heated cooling water, and the plurality of discharge nozzles in the other group are used for spraying cold air; the secondary clash mixing box is used for performing accelerated secondary clash mixing on a mixture of atomized cooling water and cold air formed by clash in the clash cooling plate group; the condensation water return cylinder is used for alternately receiving a mixture of the atomized cooling water and the cold air to form a plurality of to-be-received units and a plurality of received units, the to-be-received units are used for ensuring normal flowing of air flow in the front, and the received units are used for condensing and recycling the atomized cooling water and cooling and drying the cold air.

Description

Technical Field

[0001] The present invention relates to the technical field of fracturing truck cooling, and more specifically, to a comprehensive cooling system for protecting a fracturing truck. Background Art

[0002] Fracturing trucks are applicable to fracturing acidizing operations in shale gas fields and tight oil and gas fields, as well as fracturing construction in deep wells and medium-deep wells; they are extended to operations such as oil reservoir water injection, well flushing, and plugging removal, and even used in industrial fields such as high-pressure hydraulic coal mining in coal mines and ship rust removal. Fracturing trucks are the core equipment for oil and gas field production increase operations. By using high-pressure pumping technology, fracturing fluid is injected into underground rock formations to break through the permeability barrier of tight formations in an artificial fracturing manner. Its core function is to improve oil and gas recovery rates, especially suitable for the development of unconventional resources such as shale gas and tight oil. In addition, its application scenarios extend to coalbed methane development, oil well plugging removal, industrial high-pressure cleaning and other fields, demonstrating the ability to adapt to multiple scenarios.

[0003] When a fracturing truck operates under ultra-high pressure (above 100 MPa) and high sand ratio conditions, there is a risk of high temperature, that is, during the high-pressure pumping process, the friction of the fracturing fluid generates heat, resulting in a sharp increase in the temperature of the pump body and pipeline, which may cause cavitation or seal failure.

[0004] Based on this, in order to ensure the working safety of the fracturing truck, it is necessary to cool and dissipate heat from the fracturing truck; coolant is used in this process, and after the coolant absorbs heat, it needs to be cooled down for subsequent heat absorption; therefore, a solution has emerged in the prior art: a cooling device for a fracturing truck (Chinese patent, application number 202110784632.1) discloses that "cold water absorbs the heat of the coolant through the inner pipe and then enters the water tank and is atomized and sprayed out through a nozzle. The fan works to introduce air flow into the water tank, and then blows upward from the inside of the water tank through a blowing pipe. The blowing pipe is used to improve the uniformity of the air flow in the water tank, and the air flow is used to reduce the falling speed of the water mist, increase the cooling and heat dissipation time of the water mist, ensure full contact between the air flow and the water mist, and improve the cooling effect on the water mist", but the "fog-catching net" densely distributed on the top of the water tank will limit the flow of air, thereby affecting the contact between the air flow and the water mist. Summary of the Invention

[0005] The purpose of the present invention is to solve the deficiencies existing in the prior art, and to propose a comprehensive cooling system for protecting a fracturing truck.

[0006] The specific technical solution is as follows: A comprehensive cooling system for the protection of a fracturing truck, including a coolant cooling pipe assembly, on which a feed pipe and a discharge pipe are installed. The feed pipe is connected to the cooling protection structure of the fracturing truck; the feed pipe is used to introduce the coolant after heat exchange into the interior of the coolant cooling pipe assembly for cooling the coolant; the system further includes a collision cooling box, and the collision cooling box is connected to the coolant cooling pipe assembly; the cooling water for cooling the coolant in the coolant cooling pipe assembly is introduced into the collision cooling box after heat exchange; a collision cooling plate group, a secondary collision mixing box and a condensate return cylinder are installed inside the collision cooling box; the collision cooling plate group includes a plurality of discharge nozzles, and the plurality of discharge nozzles are divided into two groups, and the plurality of discharge nozzles in the two groups are in a one-to-one corresponding state facing each other; a plurality of discharge nozzles in one group are used to atomize the heated cooling water, and a plurality of discharge nozzles in the other group are used to spray cold air; the secondary collision mixing box is used to accelerate the secondary collision mixing of the mixture of atomized cooling water and cold air formed by the collision inside the collision cooling plate group; the condensate return cylinder is used to alternately receive the mixture of atomized cooling water and cold air, forming a plurality of to-be-received units and a plurality of received units. The plurality of to-be-received units are used to ensure the normal flow of the front airflow, and the plurality of received units are used to condense and recover the atomized cooling water and cool and dry the cold air.

[0007] The heated cooling water is introduced into the collision cooling box and the cold air is introduced into the collision cooling box. The heated cooling water of a plurality of discharge nozzles in one group is atomized and dispersed and sprayed to form a plurality of spray points; a plurality of discharge nozzles in the other group disperse the cold air and correspond to the plurality of spray points one by one, forming a multi-point dispersed jet collision, which is beneficial to the full contact between the cold air and the water mist of the cooling water, achieving multi-point uniform mixing, and cooperating with the use of the secondary collision mixing box to draw in multi-points and then accelerate the flow and perform secondary collision mixing, further achieving multi-point uniform mixing, increasing the cooling and heat dissipation time of the water mist, and ensuring the improvement of the cooling effect on the water mist; thereafter, the condensate return cylinder is used to alternately receive the mixture of atomized cooling water and cold air, forming a plurality of to-be-received units and a plurality of received units. The normal flow of the front airflow is ensured by the plurality of to-be-received units, and the atomized cooling water is condensed and recovered and the cold air is cooled and dried by the plurality of received units, realizing the independent condensation and recovery of the atomized cooling water and the cooling and drying of the cold air on the basis of ensuring the normal flow of the front airflow, and improving the recovery efficiency and quality of the cooling water and the cold air; that is, it can achieve the full contact between the cold air and the water mist of the cooling water, increase the cooling and heat dissipation time of the water mist, and improve the recovery efficiency and quality of the cooling water and the cold air on the basis of ensuring the improvement of the cooling effect on the water mist.

[0008] In a further technical solution of the present invention, the colliding cooling plate group includes a water inlet colliding plate and an air inlet colliding plate, and the water inlet colliding plate and the air inlet colliding plate are assembled through an assembly frame; the water inlet colliding plate and the air inlet colliding plate are arranged in a parallel and facing manner; a plurality of discharge nozzles in a group are arrayed on the water inlet colliding plate, and another group of a plurality of discharge nozzles are arrayed on the air inlet colliding plate; the water inlet colliding plate and the air inlet colliding plate adopt the same structure, and a feed cavity is opened on the air inlet colliding plate, and a plurality of unit dispersion feed ports are opened on the feed cavity; the plurality of unit dispersion feed ports and the plurality of discharge nozzles are in one-to-one correspondence.

[0009] In a further technical solution of the present invention, the secondary colliding mixing box is assembled on the colliding cooling plate group, and a plurality of air extraction cavities are opened on the side of the secondary colliding mixing box facing the colliding cooling plate group, and a colliding cavity is opened on the side of the other side of the secondary colliding mixing box facing the condensate return water cylinder; an air extraction hole is opened between the air extraction cavity and the colliding cavity, and the air extraction hole communicates the air extraction cavity with the colliding cavity; an impeller is installed inside the air extraction hole, and the impeller is used to accelerate the extraction of the mixture of atomized cooling water and cold air formed by collision inside the colliding cooling plate group through the air extraction cavity and perform secondary colliding mixing inside the colliding cavity.

[0010] In a further technical solution of the present invention, a dispersion air inlet is opened on the main body of the condensate return water cylinder, and the dispersion air inlet includes a plurality of air inlet channels; solenoid valves are arranged inside the plurality of air inlet channels, and a refrigeration conductor is arranged inside the air inlet channels; locally, a plurality of air inlet channels alternately receive the mixture of atomized cooling water and cold air to form a plurality of received units, and a plurality of air inlet channels that do not receive the mixture of atomized cooling water and cold air are a plurality of to-be-received units; a duct is arranged at one end of the condensate return water cylinder, and the duct communicates with the plurality of air inlet channels; a liquid collecting pipe is arranged below the condensate return water cylinder, and the liquid collecting pipe communicates with the plurality of air inlet channels.

[0011] In a further technical solution of the present invention, the colliding cooling box is installed on the cooling recovery box, and the secondary colliding mixing box and the condensate return water cylinder are assembled inside the cooling recovery box; a gas collecting hood is installed at one end of the condensate return water cylinder, and a return air pipe is connected and communicated to the gas collecting hood; the end of the return air pipe away from the gas collecting hood is connected to the colliding cooling box and communicated to the colliding cooling box. After the cold air cools the heated cooling water, it enters the condensate return water cylinder for cooling and then is re-introduced into the colliding cooling box to form a closed-loop use of the cold air. In this way, the cleanliness of the cold air can be guaranteed, and there is no need to install a filtering device for filtering, which can save the processing steps and avoid occupying the internal space by installing the filtering device, thus saving energy consumption.

[0012] In a further technical solution of the present invention, a pump body return water pipe assembly is installed at one end of the coolant cooling pipe assembly. The pump body return water pipe assembly includes a water extraction pump and a return water connection pipe. The water extraction pump is used to extract the cooling water whose temperature has risen for cooling the coolant and send it into the return water connection pipe. One end of the return water connection pipe is connected to the collision cooling box and communicates with the collision cooling box. A return water pipe is arranged below the coolant cooling pipe assembly, and the return water pipe communicates with the condensation return water cylinder.

[0013] In a further technical solution, a coolant cooling pipe group, a multi-point feeding cylinder, and an outer isolation cylinder are installed inside the coolant cooling pipe assembly. Both ends of the coolant cooling pipe group are rotatably assembled on the feeding pipe and the discharging pipe respectively, and the coolant cooling pipe group is rotatably communicated with the feeding pipe and the discharging pipe respectively. The coolant cooling pipe group is used for dispersedly cooling the coolant whose temperature has risen after heat exchange. A slow material cavity is formed between the multi-point feeding cylinder and the outer isolation cylinder. The slow material cavity is used to receive the cooled cooling water introduced by the return water pipe, and the cooled cooling water is used for dispersedly cooling the coolant whose temperature has risen after heat exchange inside the coolant cooling pipe group.

[0014] In a further technical solution, the coolant cooling pipe group includes two distribution heads. A plurality of unit cooling pipes are assembled between the two distribution heads. The unit cooling pipes are slidably assembled on the guiding grooves opened on the distribution heads. An electric telescopic rod is installed inside the guiding grooves. The electric telescopic rod is used to adjust the position of the unit cooling pipes in the radial direction. A distribution cavity is opened on one side of the distribution head away from the unit cooling pipes. A sealing bearing A is arranged at the opening of the distribution cavity. The sealing bearing A is used for the rotational communication between the coolant cooling pipe group and the feeding pipe and the discharging pipe. A plurality of coolant inlet holes are opened at the bottom of the distribution cavity. The plurality of coolant inlet holes correspond to the plurality of unit cooling pipes one by one. The coolant inlet holes and the unit cooling pipes are communicated through connecting hoses. A rack ring is sleeved outside the distribution cavity, and the rack ring is power-driven and connected to a driving device. The coolant whose temperature has risen after heat exchange is dispersed into a plurality of unit cooling pipes through the feeding pipe and the distribution heads, so as to increase the contact surface with the cooling water inside the multi-point feeding cylinder and improve the cooling effect. Start the driving device to drive the plurality of unit cooling pipes to rotate inside the multi-point feeding cylinder, further increasing the contact surface with the cooling water inside the multi-point feeding cylinder. Then start the electric telescopic rod to adjust the position of the unit cooling pipes in the radial direction through the electric telescopic rod, so that the unit cooling pipes rotate at different radii, further increasing the contact surface with the cooling water inside the multi-point feeding cylinder. Finally, after the electric telescopic rod periodically expands and contracts to adjust the position of the unit cooling pipes in the radial direction, the contact surface with the cooling water inside the multi-point feeding cylinder is further increased. That is, by further increasing the contact surface between the heated coolant and the cooling water inside the multi-point feeding cylinder for multiple times, the sufficiency of contact is realized, the cooling and heat dissipation cycle is shortened, and the cooling efficiency and quality of the coolant are guaranteed.

[0015] In a further technical solution, isolation rings are respectively sleeved outside the two ends of the multi-point material guiding cylinder, and a slow material cavity is formed by enclosing between the isolation rings, the multi-point material guiding cylinder and the outer isolation cylinder; a plurality of material guiding holes are formed in the multi-point material guiding cylinder between the two isolation rings, and a sealing bearing A is respectively inserted inside the two ends of the multi-point material guiding cylinder, and the sealing bearing A is sleeved on the distribution head in a sealed manner, and the multi-point material guiding cylinder is rotationally connected to the distribution head by using the sealing bearing A.

[0016] In a further technical solution, an inlet and an outlet are arranged on the outer isolation cylinder, one end of the inlet communicates with the slow material cavity, and the other end communicates with the return water pipe; one end of the outlet communicates with the inside of the multi-point material guiding cylinder, and the other end communicates with the pump body return water pipe assembly.

[0017] The cooled cooling water provided for the slow material cavity through the return water pipe is dispersed and introduced onto the columnar main bodies of a plurality of unit cooling pipes through a plurality of material guiding holes formed in the multi-point material guiding cylinder, so as to disperse and shorten the path of the cooling water and the heated coolant while ensuring the contact surface; the cooled cooling water is used to perform high-quality and high-efficiency dispersed cooling on the heated coolant after heat exchange, ensuring the heat exchange effect; avoiding the problem that in the prior art, the temperatures of the cooled cooling water and the heated coolant will gradually approach during the contact heat exchange process, resulting in a poor heat exchange effect. For example, in the demonstration of the contact cooling of the heated coolant and the cooled cooling water provided in the figure, that is, in the process from the cooled cooling water entering from the inlet to contacting the heated coolant in the original state and then to the outlet, the temperatures of the two will gradually approach, resulting in a poor heat exchange effect. And in the prior art, the "outer tube" for guiding the cooling water and the "inner tube" for guiding the high-temperature coolant disclosed in a cooling device for a fracturing truck (application number 202110784632.1) will also have the problem that the temperatures of the two will gradually approach during the long cooling path, resulting in a poor heat exchange effect.

[0018] Compared with the prior art, the comprehensive cooling system for the protection of the fracturing truck of the present invention can achieve:

[0019] 1) Cool down using the coolant in the cooling and protection structure of the fracturing truck. After the temperature of the coolant rises, it is introduced into the internal of the coolant cooling pipe assembly through the feed pipe. The temperature of the cooling water for cooling the coolant in the coolant cooling pipe assembly will rise after heat exchange. The heated cooling water is introduced into the collision cooling box and cold air is introduced into the collision cooling box. The heated cooling water of multiple discharge nozzles in one group is atomized and sprayed out dispersedly, forming multiple spray points; multiple discharge nozzles in the other group disperse the cold air and correspond to the multiple spray points one by one, forming multi-point dispersed jet collision, which is conducive to the full contact between the cold air and the water mist of the cooling water, achieving multi-point uniform mixing. And cooperate with the secondary collision mixing box to suck in multi-points and then accelerate the flow, and conduct secondary collision mixing, further achieving multi-point uniform mixing, increasing the cooling and heat dissipation time of the water mist, and ensuring the improvement of the cooling effect on the water mist;

[0020] After that, use the condensate return cylinder to alternately receive the mixture of atomized cooling water and cold air, forming multiple to-be-received units and multiple received units. Ensure the normal flow of the front airflow through multiple to-be-received units, and use multiple received units to condensate and recover the atomized cooling water and cool and dry the cold air, achieving the ability to independently condensate and recover the atomized cooling water and cool and dry the cold air on the basis of ensuring the normal flow of the front airflow, improving the recovery efficiency and quality of the cooling water and cold air;

[0021] That is, it can achieve the full contact between the cold air and the water mist of the cooling water, increase the cooling and heat dissipation time of the water mist, ensure the improvement of the cooling effect on the water mist, and on this basis, improve the recovery efficiency and quality of the cooling water and cold air;

[0022] 2) After the cold air cools down the heated cooling water, it enters the internal of the condensate return cylinder for cooling, and then is re-introduced into the collision cooling box to form a closed-loop use of the cold air. In this way, it can ensure the cleanliness of the cold air, without the need to install a filtering device for filtration, achieving the ability to save processing steps while avoiding occupying internal space due to installing this filtering device, saving energy consumption;

[0023] A prior art cooling device for a fracturing truck (application number 202110784632.1) discloses a "wind barrel", as well as a "fan, filter cover, wind blade and scraper" arranged on the "wind barrel". It does not use closed-loop cold air, and also installs a filtering device, increasing the filtration steps, occupying internal space, and increasing energy consumption;

[0024] 3) The coolant heated after heat exchange enters multiple unit cooling pipes through the feed pipe and the distribution head, increasing the contact surface with the cooling water inside the multi-point guide cylinder and improving the cooling effect. The driving device is started to drive the multiple unit cooling pipes to rotate inside the multi-point guide cylinder, further increasing the contact surface with the cooling water inside the multi-point guide cylinder. Then, the electric telescopic rod is started, and the position of the unit cooling pipe in the radial direction is adjusted through the electric telescopic rod, enabling the unit cooling pipe to rotate at different radii and further increasing the contact surface with the cooling water inside the multi-point guide cylinder. Finally, after the electric telescopic rod periodically expands and contracts to adjust the position of the unit cooling pipe in the radial direction, the contact surface with the cooling water inside the multi-point guide cylinder is further increased.

[0025] That is, by increasing the contact surface between the heated coolant and the cooling water inside the multi-point guide cylinder multiple times, the sufficiency of contact is improved, the cooling and heat dissipation cycle is shortened, and the cooling efficiency and quality of the coolant are guaranteed.

[0026] 4) The cooled cooling water provided for the buffer chamber through the return pipe is dispersed into the columnar bodies of multiple unit cooling pipes through multiple guide holes opened on the multi-point guide cylinder, shortening the path between the cooling water and the heated coolant by dispersion while ensuring the contact surface. The cooled cooling water can perform high-quality and high-efficiency dispersed cooling for the heated coolant after heat exchange, ensuring the heat exchange effect. It avoids the problem that in the prior art, the temperatures of the cooled cooling water and the heated coolant gradually approach during the contact heat exchange process, resulting in a deteriorated heat exchange effect. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0028] Figure 1 It is a schematic structural diagram of a comprehensive cooling system for a fracturing truck protection in an embodiment of the present invention;

[0029] Figure 2 It is Figure 1 The schematic structural diagram after flipping;

[0030] Figure 3 It is a schematic assembly structure diagram of a collision cooling plate group, a secondary collision mixing box, and a condensate return cylinder in an embodiment of the present invention;

[0031] Figure 4 It is Figure 3 The schematic structural diagram of the collision cooling plate group in

[0032] Figure 5 is Figure 4 a structural schematic diagram of the middle air inlet impact plate;

[0033] Figure 6 is Figure 5 a structural schematic diagram after flipping;

[0034] Figure 7 is Figure 3 a structural schematic diagram of the middle secondary impact mixing box;

[0035] Figure 8 is Figure 7 a transverse sectional structural schematic diagram of the middle secondary impact mixing box;

[0036] Figure 9 is Figure 3 a structural schematic diagram of the middle condensate return pipe;

[0037] Figure 10 is Figure 1 a structural schematic diagram of the middle coolant cooling pipe assembly;

[0038] Figure 11 is an assembly structural schematic diagram of the coolant cooling pipe group, multi-point feeding cylinder and outer isolation cylinder in an embodiment of the present invention;

[0039] Figure 12 is Figure 11 a structural schematic diagram of the coolant cooling pipe group, multi-point feeding cylinder and outer isolation cylinder;

[0040] Figure 13 is Figure 11 a sectional structural schematic diagram of;

[0041] Figure 14 is Figure 11 a structural schematic diagram of the coolant cooling pipe group;

[0042] Figure 15 is Figure 14 an assembly structural schematic diagram of the distribution head and the unit cooling pipe;

[0043] Figure 16 is Figure 14 a structural schematic diagram of the distribution head;

[0044] Figure 17 is Figure 11 a structural schematic diagram of the multi-point feeding cylinder;

[0045] Figure 18 is Figure 11 a structural schematic diagram of the outer isolation cylinder;

[0046] Figure 19 isFigure 11 Schematic diagram of the transverse sectional structure;

[0047] Figure 20 It is a demonstration diagram of the cooling of the heated coolant by contacting with cooling water in the prior art.

[0048] In the attached drawings:

[0049] Gas collecting hood 1;

[0050] Return air pipe 2;

[0051] Cooling and recovery box 3;

[0052] Collision cooling box 4; Collision cooling plate group 100, water inlet collision plate 110, assembly frame 120, air inlet collision plate 130, discharge nozzle 131, feed cavity 132, unit dispersion feed port 133; Secondary collision mixing box 200, air extraction cavity 210, air extraction holes 220, impeller 230, collision cavity 240; Condensate return water cylinder 300, dispersion air inlet 310, liquid collecting pipe 320, air guide pipe 330;

[0053] Coolant cooling pipe assembly 5; Coolant cooling pipe group 400, distribution head 410 (rack ring 4101, sealed bearing A 4102, coolant inlet hole 4103, distribution cavity 4104, connecting hose 4105), unit cooling pipe 420, guide groove 430; Multi-point material guiding cylinder 500, isolation ring 510, material guiding holes 520, sealed bearing A 530; Outer isolation cylinder 600, inlet 610, outlet 620; Slow material cavity 700, dispersion material guiding indicating arrow 800;

[0054] Feed pipe 6;

[0055] Return water pipe 7;

[0056] Discharge pipe 8;

[0057] Pump body return water pipe assembly 9. Detailed implementation manners

[0058] In order to make the objectives, technical solutions and advantages of the present invention clearer and more understandable, the present invention will be further described in detail below in conjunction with specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0059] In the embodiments of the present invention, as Figure 1 and Figure 2As shown: A comprehensive cooling system for the protection of a fracturing truck, including a coolant cooling pipe assembly 5, on which a feed pipe 6 and a discharge pipe 8 are installed. The feed pipe 6 is connected to the cooling protection structure of the fracturing truck; the feed pipe 6 is used to introduce the coolant after heat exchange into the interior of the coolant cooling pipe assembly 5 for cooling the coolant;

[0060] Regarding the "fracturing truck" and the "cooling protection structure of the fracturing truck", it should be noted that both belong to the prior art, and their detailed structures can be obtained from existing literature and periodicals. At the same time, they can also be directly purchased on the market, or components can be purchased on the market for assembly, etc.; they are not what the present invention intends to protect and will not be elaborated in detail here;

[0061] Therefore, after the coolant is used to cool down on the cooling protection structure of the fracturing truck, the thermal temperature of the coolant rises. Then, it is introduced into the interior of the coolant cooling pipe assembly 5 through the feed pipe 6, and the coolant cooling pipe assembly 5 is used to cool the coolant; after the coolant temperature drops, it is then led out by the discharge pipe 8.

[0062] Continue to refer to Figures 3 - 9 As shown: The system further includes a collision cooling box 4, and the collision cooling box 4 is connected to the coolant cooling pipe assembly 5; the cooling water used to cool the coolant in the coolant cooling pipe assembly 5 is introduced into the collision cooling box 4 after heat exchange; the collision cooling box 4 is internally provided with a collision cooling plate group 100, a secondary collision mixing box 200, and a condensate return cylinder 300;

[0063] The collision cooling plate group 100 includes a plurality of discharge nozzles 131. The plurality of discharge nozzles 131 are divided into two groups, and the plurality of discharge nozzles 131 in the two groups are in a one-to-one corresponding state facing each other; the plurality of discharge nozzles 131 in one group are used to atomize the heated cooling water, and the plurality of discharge nozzles 131 in the other group are used to spray cold air;

[0064] Therefore, after the cooling water used to cool the coolant inside the coolant cooling pipe assembly 5 undergoes heat exchange, the heated cooling water is introduced into the collision cooling box 4 and the cold air is introduced into the collision cooling box 4. The plurality of discharge nozzles 131 in one group atomize the heated cooling water and disperse it for spraying, forming a plurality of spray points; the plurality of discharge nozzles 131 in the other group disperse the cold air and correspond to the plurality of spray points one by one, forming a multi-point dispersed jet collision, which is conducive to the full contact between the cold air and the water mist of the cooling water, achieving multi-point uniform mixing, increasing the cooling and heat dissipation time of the water mist, and ensuring the improvement of the cooling effect on the water mist;

[0065] The secondary collision mixing box 200 is used to accelerate the secondary collision mixing of the mixture of atomized cooling water and cold air formed by the collision inside the collision cooling plate group 100;

[0066] Therefore, after the multi-point dispersed injection and collision of the heating cooling water and the cold air are formed by two groups of multiple discharge nozzles 131, the secondary collision mixing box 200 is used for multi-point pumping, then accelerating the flow, and performing secondary collision mixing to further achieve multi-point uniform mixing and increase the cooling and heat dissipation time of the water mist;

[0067] The condensate return cylinder 300 is used to alternately receive the mixture of atomized cooling water and cold air, forming multiple to-be-received units and multiple received units. The multiple to-be-received units are used to ensure the normal flow of the front air current, and the multiple received units are used for condensing and recovering the atomized cooling water and cooling and drying the cold air.

[0068] In summary, aiming at the problem that the "fog-catching net" densely distributed on the top of the water tank in the prior art will restrict the flow of air, thereby affecting the contact between the air current and the water mist, the present application can achieve:

[0069] When the coolant on the cooling and protection structure of the fracturing truck is used for cooling and temperature reduction, and after the thermal temperature of the coolant rises, it is introduced into the interior of the coolant cooling pipe assembly 5 through the feed pipe 6. The cooling water for cooling the coolant in the coolant cooling pipe assembly 5 will have an increased temperature after heat exchange. The heated cooling water is introduced into the collision cooling box 4 and the cold air is introduced into the collision cooling box 4. The heated cooling water of multiple discharge nozzles 131 in one group is atomized and dispersed and sprayed out to form multiple spray points; multiple discharge nozzles 131 in the other group disperse the cold air and correspond to the multiple spray points one by one to form multi-point dispersed injection and collision, which is beneficial to the full contact between the cold air and the water mist of the cooling water, achieving multi-point uniform mixing, and cooperating with the use of the secondary collision mixing box 200 for multi-point pumping, then accelerating the flow, and performing secondary collision mixing to further achieve multi-point uniform mixing, increasing the cooling and heat dissipation time of the water mist, and ensuring the improvement of the cooling effect on the water mist;

[0070] After that, the condensate return cylinder 300 is used to alternately receive the mixture of atomized cooling water and cold air, forming multiple to-be-received units and multiple received units. By means of the multiple to-be-received units, the normal flow of the front air current is ensured, and by means of the multiple received units, the atomized cooling water is condensed and recovered and the cold air is cooled and dried, realizing the ability to independently condense and recover the atomized cooling water and cool and dry the cold air on the basis of ensuring the normal flow of the front air current, and improving the recovery efficiency and quality of the cooling water and the cold air;

[0071] That is, it can achieve the full contact between the cold air and the water mist of the cooling water, increase the cooling and heat dissipation time of the water mist, ensure the improvement of the cooling effect on the water mist, and on this basis, improve the recovery efficiency and quality of the cooling water and the cold air.

[0072] In the embodiment of the present invention, as Figures 3 - 6: The colliding cooling plate group 100 includes a water inlet colliding plate 110 and an air inlet colliding plate 130, and the water inlet colliding plate 110 and the air inlet colliding plate 130 are assembled through an assembly frame 120; the water inlet colliding plate 110 and the air inlet colliding plate 130 are arranged in a parallel and facing manner;

[0073] A group of multiple discharge nozzles 131 are arrayed on the water inlet colliding plate 110, and another group of multiple discharge nozzles 131 are arrayed on the air inlet colliding plate 130;

[0074] The water inlet colliding plate 110 and the air inlet colliding plate 130 have the same structure. A feed cavity 132 is formed on the air inlet colliding plate 130, and a plurality of unit dispersion feed ports 133 are formed on the feed cavity 132; the plurality of unit dispersion feed ports 133 and the plurality of discharge nozzles 131 are in one-to-one correspondence (the plurality of unit dispersion feed ports 133 on the water inlet colliding plate 110 and the plurality of discharge nozzles 131 on the other group on the water inlet colliding plate 110 are in one-to-one correspondence).

[0075] It should be added that: the plurality of discharge nozzles 13 on the water inlet colliding plate 110 can all be atomizing nozzles, which belong to the prior art, and their detailed structures can be obtained from existing literature and periodicals, and can also be directly purchased on the market, etc.; they are not what the present invention intends to protect and will not be elaborated in detail here.

[0076] In the embodiment of the present invention, as Figure 7 and Figure 8 shown: The secondary colliding mixing box 200 is assembled on the colliding cooling plate group 100 (specifically, the secondary colliding mixing box 200 is assembled between the water inlet colliding plate 110 and the air inlet colliding plate 130 and communicates with the space between the water inlet colliding plate 110 and the air inlet colliding plate 130). The secondary colliding mixing box 200 is provided with a plurality of air extraction cavities 210 on the side facing the colliding cooling plate group 100 ( Figure 7 and Figure 8 The number of the air extraction cavities 210 given in is two, which is only one of the embodiments), and a colliding cavity 240 is formed on the side of the other side of the secondary colliding mixing box 200 facing the condensate return cylinder 300;

[0077] An air extraction hole 220 is formed between the air extraction cavity 210 and the colliding cavity 240, and the air extraction hole 220 communicates the air extraction cavity 210 with the colliding cavity 240; an impeller 230 is installed inside the air extraction hole 220, and the impeller 230 is used to accelerate the extraction of the mixture of atomized cooling water and cold air formed by collision inside the colliding cooling plate group 100 through the air extraction cavity 210 and perform secondary colliding mixing inside the colliding cavity 240.

[0078] Therefore, after the multi-point dispersed injection and collision of the heating cooling water and the cold air are formed by two groups of multiple discharge nozzles 131, the impeller 230 is used to accelerate the extraction of the mixture of the atomized cooling water and the cold air formed by the collision inside the collision cooling plate group 100 through the air extraction cavity 210, and a secondary collision and mixing is carried out inside the collision cavity 240. After the multi-point suction is completed by using the secondary collision mixing box 200, the accelerated flow is carried out, and the secondary collision and mixing is carried out, further achieving multi-point uniform mixing and increasing the cooling and heat dissipation time of the water mist.

[0079] Regarding the "power source of the impeller 230", it should be noted that: they all belong to the prior art, and their detailed structures can be obtained from existing literature and periodicals. At the same time, they can also be directly purchased on the market, or the components can be purchased on the market for assembly, etc.; they are not what the present invention intends to protect and will not be elaborated in detail here.

[0080] In the embodiment of the present invention, as Figure 3 and Figure 9 shown: a dispersed air inlet 310 is provided on the main body of the condensate return water cylinder 300, and the dispersed air inlet 310 includes a plurality of air inlet channels; solenoid valves are arranged inside each of the plurality of air inlet channels, and a refrigeration conductor is arranged inside the air inlet channels.

[0081] The mixture of the atomized cooling water and the cold air is alternately received by a plurality of local air inlet channels to form a plurality of received units, and the plurality of air inlet channels that do not receive the mixture of the atomized cooling water and the cold air are a plurality of to-be-received units.

[0082] A duct 330 is provided at one end of the condensate return water cylinder 300, and the duct 330 communicates with a plurality of air inlet channels; a liquid collecting pipe 320 is provided below the condensate return water cylinder 300, and the liquid collecting pipe 320 communicates with a plurality of air inlet channels.

[0083] Therefore, the condensate return water cylinder 300 alternately receives the mixture of the atomized cooling water and the cold air by a plurality of local air inlet channels to form a plurality of received units, and the plurality of air inlet channels that do not receive the mixture of the atomized cooling water and the cold air are a plurality of to-be-received units; it is ensured that the front airflow flows normally through the plurality of to-be-received units, and the refrigeration conductors on the plurality of received units are used for condensing and recovering the atomized cooling water and cooling and drying the cold air, realizing that on the basis of ensuring the normal flow of the front airflow, the atomized cooling water can be independently condensed and recovered and the cold air can be cooled and dried.

[0084] In the embodiment of the present invention, as Figure 1 and Figure 2 shown: the collision cooling box 4 is installed on the cooling and recovery box 3, and the secondary collision mixing box 200 and the condensate return water cylinder 300 are assembled inside the cooling and recovery box 3;

[0085] The condensate return water cylinder 300 is installed with an air collecting hood 1 at one end thereof, and a return air pipe 2 is connected to and communicated with the air collecting hood 1; the end of the return air pipe 2 away from the air collecting hood 1 is connected to the counter-collision cooling box 4 and communicated with the counter-collision cooling box 4 (specifically, the return air pipe 2 is communicated with the air inlet counter-collision plate 130).

[0086] Therefore, after the cold air cools down the heated cooling water, it enters the inside of the condensate return water cylinder 300 for cooling, and then is re-introduced into the counter-collision cooling box 4 to form a closed-loop use of the cold air. In this way, the cleanliness of the cold air can be guaranteed, and there is no need to install a filtering device for filtration. It can save the processing steps while avoiding occupying the internal space by installing the filtering device, thus saving energy consumption.

[0087] A prior art cooling device for a fracturing truck (Chinese patent, application number 202110784632.1) discloses a "wind cylinder" and "a fan, a filter cover, a wind blade and a scraper" provided on the "wind cylinder". It does not use a closed-loop cold air and also installs a filtering device, which increases the filtration steps and occupies the internal space, increasing energy consumption.

[0088] In the embodiment of the present invention, as Figure 1 、 Figure 2 and Figure 10 shown: One end of the coolant cooling pipe assembly 5 is installed with a pump body return water pipe assembly 9. The pump body return water pipe assembly 9 includes a water extraction pump and a return water connection pipe. The water extraction pump is used to extract the cooling water whose temperature has risen for cooling the coolant and send it into the return water connection pipe; one end of the return water connection pipe is connected to the counter-collision cooling box 4 and communicated with the counter-collision cooling box 4 (specifically, the return water connection pipe is communicated with the water inlet counter-collision plate 110).

[0089] A return water pipe 7 is arranged below the coolant cooling pipe assembly 5, and the return water pipe 7 is communicated with the condensate return water cylinder 300 (specifically, the return water pipe 7 is communicated with the liquid collecting pipe 320).

[0090] As Figures 11 - 13 shown: Inside the coolant cooling pipe assembly 5, a coolant cooling pipe group 400, a multi-point feeding cylinder 500 and an outer isolation cylinder 600 are installed.

[0091] Both ends of the coolant cooling pipe group 400 are rotatably assembled on the feeding pipe 6 and the discharging pipe 8 respectively, and the coolant cooling pipe group 400 is rotatably communicated with the feeding pipe 6 and the discharging pipe 8 respectively; the coolant cooling pipe group 400 is used for dispersedly cooling the heated coolant after heat exchange.

[0092] A slow material chamber 700 is formed between the multi-point material guiding cylinder 500 and the outer isolation cylinder 600. The slow material chamber 700 is used to receive the cooled cooling water introduced by the return water pipe 7, and the cooled cooling water is used to disperse and cool the coolant that has been heated after heat exchange inside the coolant cooling pipe group 400.

[0093] As Figures 11 - 16 and Figure 19 shown: The coolant cooling pipe group 400 includes two distribution heads 410. A plurality of unit cooling pipes 420 are assembled between the two distribution heads 410. The unit cooling pipes 420 are slidably assembled on the guiding grooves 430 opened on the distribution heads 410; an electric telescopic rod is installed inside the guiding grooves 430, and the electric telescopic rod is used to adjust the position of the unit cooling pipes 420 in the radial direction;

[0094] On the side of the distribution head 410 away from the unit cooling pipes 420, a distribution chamber 4104 is opened. A sealing bearing A4102 is arranged at the opening of the distribution chamber 4104, and the sealing bearing A4102 is used for the coolant cooling pipe group 400 to be rotationally communicated with the feed pipe 6 and the discharge pipe 8;

[0095] A plurality of coolant inlet holes 4103 are opened at the bottom of the distribution chamber 4104, and the plurality of coolant inlet holes 4103 correspond to the plurality of unit cooling pipes 420 one by one; the coolant inlet holes 4103 are communicated with the unit cooling pipes 420 through connecting hoses 4105;

[0096] A rack ring 4101 is sleeved outside the distribution chamber 4104, and the rack ring 4101 is power-driven and connected to a driving device.

[0097] Regarding the "driving device", it should be supplemented that: The driving device includes a driving motor. A driving gear is fixed on the output shaft of the driving motor, and the driving gear meshes with the rack ring 4101 to complete the power transmission connection of the rack ring 4101 to the driving device; the driving motor and the wiring method of the driving motor are all prior arts, and their detailed structures can be known from existing literature and periodicals, and can also be directly purchased on the market, or parts can be purchased on the market for composition, etc.; it is not what the present invention wants to protect, so it will not be elaborated in detail here.

[0098] Therefore, the heated coolant after heat exchange enters into multiple unit cooling pipes 420 through the feed pipe 6 and the distribution head 410 in a dispersed manner, so as to increase the contact surface with the cooling water inside the multi-point guide cylinder 500 and improve the cooling effect. Start the driving device to drive the multiple unit cooling pipes 420 to rotate inside the multi-point guide cylinder 500, further increasing the contact surface with the cooling water inside the multi-point guide cylinder 500. Then start the electric telescopic rod, and adjust the position of the unit cooling pipe 420 in the radial direction through the electric telescopic rod, so that the unit cooling pipe 420 rotates at different radii, and further increases the contact surface with the cooling water inside the multi-point guide cylinder 500. Finally, after the electric telescopic rod periodically expands and contracts to adjust the position of the unit cooling pipe 420 in the radial direction, the contact surface with the cooling water inside the multi-point guide cylinder 500 is further increased.

[0099] That is, by further increasing the contact surface between the heated coolant and the cooling water inside the multi-point guide cylinder 500 for multiple times, the sufficiency of contact is realized, the cooling and heat dissipation cycle is shortened, and the cooling efficiency and quality of the coolant are ensured.

[0100] In the embodiment of the present invention, as Figure 17 and 19 shown: Isolation rings 510 are respectively sleeved outside both ends of the multi-point guide cylinder 500, and a buffer cavity 700 is formed by enclosing between the isolation rings 510, the multi-point guide cylinder 500 and the outer isolation cylinder 600;

[0101] A plurality of material guide holes 520 are opened on the multi-point guide cylinder 500 between the two isolation rings 510. A sealing bearing A530 is respectively inserted inside both ends of the multi-point guide cylinder 500, and the sealing bearing A530 is sleeved on the distribution head 410 in a sealed manner. The multi-point guide cylinder 500 is rotationally connected to the distribution head 410 by using the sealing bearing A530.

[0102] As Figure 1 and Figure 19 shown: An inlet 610 and an outlet 620 are provided on the outer isolation cylinder 600. One end of the inlet 610 communicates with the buffer cavity 700, and the other end communicates with the return water pipe 7. One end of the outlet 620 communicates with the inside of the multi-point guide cylinder 500, and the other end communicates with the pump body return water pipe assembly 9.

[0103] The cooled cooling water provided for the buffer cavity 700 through the return water pipe 7 is dispersed and introduced onto the columnar main body of the multiple unit cooling pipes 420 through the plurality of material guide holes 520 opened on the multi-point guide cylinder 500 (for details, see Figure 19Multiple scattered material guiding indication arrows in the annotation (800) are used to disperse and shorten the paths of the cooling water and the heated coolant while ensuring the contact surface; high-quality and high-efficiency dispersed cooling of the heated coolant by the cooled cooling water after heat exchange is achieved, ensuring the heat exchange effect; the problem that the temperatures of the cooled cooling water and the heated coolant gradually approach during the heat exchange process (during the heat exchange process, the temperature of the cooled cooling water rises and the temperature of the heated coolant drops), resulting in a poor heat exchange effect is avoided. For example Figure 20 A demonstration of the contact cooling of the heated coolant and the cooled cooling water is provided. That is, during the process from the inlet where the cooled cooling water enters in the original state to contact the heated coolant in the original state and then to the outlet, the temperatures of the two gradually approach, resulting in a poor heat exchange effect. In the prior art, the "casing" for guiding the cooling water and the "inner tube" for guiding the high-temperature coolant disclosed in a cooling device for a fracturing truck (application number 202110784632.1) also have the problem that the temperatures of the two gradually approach during the long cooling path, resulting in a poor heat exchange effect.

[0104] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A comprehensive cooling system for the protection of a fracturing truck, including a coolant cooling pipe assembly (5). An inlet pipe (6) and an outlet pipe (8) are installed on the coolant cooling pipe assembly (5). The inlet pipe (6) is connected to the cooling protection structure of the fracturing truck; the inlet pipe (6) is used to introduce the coolant after heat exchange into the interior of the coolant cooling pipe assembly (5) to cool the coolant; characterized in that, The system further includes a collision cooling box (4). The collision cooling box (4) is connected to the coolant cooling pipe assembly (5); the cooling water used to cool the coolant in the coolant cooling pipe assembly (5) is introduced into the collision cooling box (4) after heat exchange; a collision cooling plate group (100), a secondary collision mixing box (200) and a condensate return cylinder (300) are installed inside the collision cooling box (4); The collision cooling plate group (100) includes a plurality of discharge nozzles (131). The plurality of discharge nozzles (131) are divided into two groups, and the plurality of discharge nozzles (131) in the two groups are in a one-to-one corresponding state facing each other; a plurality of discharge nozzles (131) in one group are used to atomize the heated cooling water, and a plurality of discharge nozzles (131) in the other group are used to spray cold air; The secondary collision mixing box (200) is used to accelerate the secondary collision mixing of the mixture of atomized cooling water and cold air formed by collision inside the collision cooling plate group (100); The condensate return cylinder (300) is used to alternately receive the mixture of atomized cooling water and cold air, forming a plurality of to-be-received units and a plurality of received units. The plurality of to-be-received units are used to ensure the normal flow of the front airflow, and the plurality of received units are used to condense and recover the atomized cooling water and cool and dry the cold air.

2. The comprehensive cooling system for the protection of a fracturing truck according to claim 1, characterized in that, The collision cooling plate group (100) includes a water inlet collision plate (110) and an air inlet collision plate (130). The water inlet collision plate (110) and the air inlet collision plate (130) are assembled through an assembly frame (120); the water inlet collision plate (110) and the air inlet collision plate (130) are arranged in a parallel and facing state; A plurality of discharge nozzles (131) in one group are arranged in an array on the water inlet collision plate (110), and a plurality of discharge nozzles (131) in the other group are arranged in an array on the air inlet collision plate (130); The water inlet collision plate (110) and the air inlet collision plate (130) have the same structure. A feed cavity (132) is opened on the air inlet collision plate (130), and a plurality of unit dispersion feed ports (133) are opened on the feed cavity (132); the plurality of unit dispersion feed ports (133) are in a one-to-one corresponding state with the plurality of discharge nozzles (131).

3. The comprehensive cooling system for the protection of a fracturing truck according to claim 1, characterized in that, The secondary collision mixing box (200) is assembled on the collision cooling plate group (100). A plurality of air extraction cavities (210) are opened on the side of the secondary collision mixing box (200) facing the collision cooling plate group (100), and a collision cavity (240) is opened on the side of the secondary collision mixing box (200) facing the condensate return cylinder (300) on the other side; An air extraction hole (220) is provided between the air extraction cavity (210) and the collision cavity (240), and the air extraction hole (220) connects the air extraction cavity (210) and the collision cavity (240); an impeller (230) is installed inside the air extraction hole (220), and the impeller (230) is used to accelerate the extraction of the mixture of atomized cooling water and cold air formed by collision inside the collision cooling plate group (100) through the air extraction cavity (210), and perform secondary collision mixing inside the collision cavity (240).

4. The comprehensive cooling system for fracturing truck protection according to claim 1, characterized in that A dispersion air inlet (310) is provided on the main body of the condensate return water cylinder (300), and the dispersion air inlet (310) includes a plurality of air inlet channels; solenoid valves are arranged inside the plurality of air inlet channels, and a refrigeration conductor is arranged inside the air inlet channels; Use a plurality of local air inlet channels to alternately receive the mixture of atomized cooling water and cold air to form a plurality of received units, and a plurality of air inlet channels that do not receive the mixture of atomized cooling water and cold air are a plurality of to-be-received units; One end of the condensate return water cylinder (300) is provided with an air duct (330), and the air duct (330) communicates with a plurality of air inlet channels; a liquid collecting pipe (320) is arranged below the condensate return water cylinder (300), and the liquid collecting pipe (320) communicates with a plurality of air inlet channels.

5. The comprehensive cooling system for fracturing truck protection according to any one of claims 1-4, characterized in that The collision cooling box (4) is installed on the cooling recovery box (3), and the secondary collision mixing box (200) and the condensate return water cylinder (300) are assembled inside the cooling recovery box (3); One end of the condensate return water cylinder (300) is installed with an air collecting hood (1), and a return air pipe (2) is connected and communicated with the air collecting hood (1); the end of the return air pipe (2) away from the air collecting hood (1) is connected to the collision cooling box (4) and communicated to the collision cooling box (4).

6. The comprehensive cooling system for fracturing truck protection according to any one of claims 1-4, characterized in that One end of the coolant cooling pipe assembly (5) is installed with a pump body return water pipe assembly (9), and the pump body return water pipe assembly (9) includes a water extraction pump and a return water connection pipe. The water extraction pump is used to extract the cooling water whose temperature has risen for cooling the coolant and send it into the return water connection pipe; one end of the return water connection pipe is connected to the collision cooling box (4) and communicated to the collision cooling box (4); A return water pipe (7) is arranged below the coolant cooling pipe assembly (5), and the return water pipe (7) communicates with the condensate return water cylinder (300).

7. The comprehensive cooling system for fracturing truck protection according to claim 6, characterized in that A coolant cooling pipe group (400), a multi-point feeding cylinder (500) and an outer isolation cylinder (600) are installed inside the coolant cooling pipe assembly (5); Both ends of the coolant cooling pipe group (400) are rotatably assembled on the feeding pipe (6) and the discharging pipe (8), and the coolant cooling pipe group (400) is rotatably communicated with the feeding pipe (6) and the discharging pipe (8) respectively; The coolant cooling pipe group (400) is used to disperse and cool the coolant that has been heated up after heat exchange; A slow material chamber (700) is formed between the multi-point feeding cylinder (500) and the outer isolation cylinder (600). The slow material chamber (700) is used to receive the cooled cooling water introduced by the return water pipe (7). The cooled cooling water is used to disperse and cool the coolant that has been heated up after heat exchange inside the coolant cooling pipe group (400).

8. A comprehensive cooling system for a fracturing truck protection according to claim 7, wherein The coolant cooling pipe group (400) includes two distribution heads (410). A plurality of unit cooling pipes (420) are assembled between the two distribution heads (410). The unit cooling pipes (420) are slidably assembled on the guiding grooves (430) opened on the distribution heads (410); An electric telescopic rod is installed inside the guiding groove (430), and the electric telescopic rod is used to adjust the position of the unit cooling pipe (420) in the radial direction; On one side of the distribution head (410) away from the unit cooling pipe (420), a distribution chamber (4104) is opened. A sealing bearing A (4102) is arranged at the opening of the distribution chamber (4104). The sealing bearing A (4102) is used for the coolant cooling pipe group (400) to be rotationally communicated with the feed pipe (6) and the discharge pipe (8); A plurality of coolant inlet holes (4103) are opened at the bottom of the distribution chamber (4104). The plurality of coolant inlet holes (4103) correspond to the plurality of unit cooling pipes (420) one by one; The coolant inlet hole (4103) and the unit cooling pipe (420) are communicated through a connecting hose (4105); A rack ring (4101) is sleeved outside the distribution chamber (4104), and the rack ring (4101) is power-driven and connected to a driving device.

9. A comprehensive cooling system for a fracturing truck protection according to claim 8, wherein Isolation rings (510) are respectively sleeved outside the two ends of the multi-point feeding cylinder (500). A slow material chamber (700) is formed between the isolation rings (510), the multi-point feeding cylinder (500) and the outer isolation cylinder (600); A plurality of feeding holes (520) are opened on the multi-point feeding cylinder (500) between the two isolation rings (510). One sealing bearing A (530) is respectively inserted inside the two ends of the multi-point feeding cylinder (500). The sealing bearing A (530) is sleeved on the distribution head (410) in a sealed manner. The multi-point feeding cylinder (500) is rotationally connected to the distribution head (410) by using the sealing bearing A (530).

10. The comprehensive cooling system for the protection of a fracturing truck according to claim 9, wherein, An inlet (610) and an outlet (620) are arranged on the outer isolation cylinder (600). One end of the inlet (610) is communicated with the slow material chamber (700), and the other end is communicated with the return water pipe (7); One end of the outlet (620) is communicated to the inside of the multi-point feeding cylinder (500), and the other end is communicated with the pump body return water pipe assembly (9).

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