CN219914114U - Cooling system - Google Patents

Abstract

The utility model discloses a cooling system, which comprises a horizontal storage tank and a heat exchange assembly, wherein the horizontal storage tank is used for storing space kerosene, the horizontal storage tank is communicated with a liquid outlet pipe, and a liquid inlet of the liquid outlet pipe extends to the inner bottom of the horizontal storage tank; the horizontal storage tank is also communicated with a liquid inlet pipe, and a liquid outlet of the liquid inlet pipe extends to the inner bottom of the horizontal storage tank; an I-shaped spray pipe is arranged at the top of the horizontal storage tank along the height direction, the spray pipe is parallel to the width direction, and a spray hole is formed at the lower end of the horizontal storage tank along the height direction; the heat exchange assembly is used for cooling the space kerosene when the space kerosene flows through the heat exchange assembly, an inlet of the heat exchange assembly is communicated with a liquid outlet of the liquid outlet pipe through an oil inlet pipeline, and an outlet of the heat exchange assembly is respectively communicated with a liquid inlet of the liquid inlet pipe and the spray pipe through an oil outlet pipeline. The utility model can effectively avoid obvious partition of cold and hot space kerosene in the tank and shorten the cooling time.

Description

Cooling system

Technical Field

The utility model relates to the technical field of aerospace, in particular to a cooling system for cooling aerospace kerosene.

Background

The new generation of carrier rockets adopts a novel liquid oxygen kerosene rocket engine, and the liquid oxygen kerosene rocket engine generally requires the temperature of the used space kerosene to be in the range of 10-15 ℃ in order to achieve the optimal combustion efficiency; the temperature of the space kerosene is influenced by the external environment in the storage process and can rise to exceed the maximum value of the temperature range required by the liquid oxygen kerosene rocket engine, so that the temperature reduction of the space kerosene is an important link.

The prior cooling device for cooling the space kerosene is mainly characterized in that a liquid inlet pipe and a liquid outlet pipe are arranged at the top of a kerosene storage tank, the liquid inlet pipe and the liquid outlet pipe extend into the inner bottom of the kerosene storage tank, in the cooling process, higher-temperature kerosene in the kerosene storage tank is pumped into a heat exchanger through the liquid outlet pipe for heat exchange, cooled low-temperature kerosene of-20 ℃ returns to the bottom of the kerosene storage tank through the liquid inlet pipe and is mixed with higher-temperature kerosene in the kerosene storage tank for cooling, but the cooling device has obvious cold and hot partition in the kerosene storage tank in the cooling process, and the temperature cannot be balanced for a long time.

Disclosure of Invention

Therefore, the technical problem to be solved by the utility model is to overcome the defects that the cold and hot kerosene in the kerosene storage tank is obviously partitioned and the temperature cannot be balanced for a long time in the cooling process of the space kerosene by the cooling device in the prior art, so that the cooling system is provided.

According to the cooling system provided by the utility model, the cooling system is used for cooling the space kerosene and comprises:

the horizontal storage tank is used for storing space kerosene;

the liquid outlet pipe is communicated with the horizontal storage tank, and a liquid inlet of the liquid outlet pipe extends to the inner bottom of the horizontal storage tank;

the liquid inlet pipe is communicated with the horizontal storage tank, and a liquid outlet of the liquid inlet pipe extends to the inner bottom of the horizontal storage tank;

the I-shaped spraying pipes are arranged at the top of the horizontal storage tank in the height direction, are parallel to the width direction, and are provided with spraying holes at the lower end in the height direction;

the heat exchange assembly is used for cooling the space kerosene when the space kerosene flows through the heat exchange assembly, an inlet of the heat exchange assembly is communicated with a liquid outlet of the liquid outlet pipe through an oil inlet pipeline, and an outlet of the heat exchange assembly is respectively communicated with a liquid inlet of the liquid inlet pipe and the spray pipe through an oil outlet pipeline.

The cooling system provided by the utility model has at least the following technical effects: the liquid outlet end of the oil outlet pipeline is simultaneously communicated with the liquid inlet pipe and the spray pipe, the liquid outlet of the liquid inlet pipe extends to the inner bottom of the horizontal storage tank, the spray pipe is arranged at the inner top of the horizontal storage tank, low-temperature space kerosene obtained by cooling through the heat exchange component can return to the inner bottom of the horizontal storage tank through the liquid inlet pipe and can return to the inner top of the horizontal storage tank through the spray hole of the spray pipe, and the heat exchange area of cold and hot kerosene is increased; the density of the space kerosene is increased along with the temperature reduction, the cooled low-temperature kerosene is downwards sprayed and settled into the tank bottom from the inner top of the horizontal storage tank along the height direction, so that the heat exchange efficiency of the cold and hot kerosene in the tank is improved, obvious partition of the cold and hot space kerosene in the tank is effectively avoided, and the cooling time is shortened; meanwhile, the spray pipes are arranged in an I shape and parallel to the width direction, so that the heat exchange area of cold and hot kerosene at the inner top of the horizontal storage tank can be increased to a greater extent, and the heat exchange efficiency of the cold and hot kerosene in the tank is further improved.

Preferably, the liquid inlet pipe and the liquid outlet pipe are parallel to the height direction and are respectively arranged at two sides of the horizontal storage tank along the length direction.

Preferably, the nitrogen storage tank further comprises a conveying pipe for conveying high-pressure nitrogen, wherein the air outlet end of the conveying pipe is communicated with the horizontal storage tank and extends to the inner bottom of the horizontal storage tank.

Preferably, three of the conveying pipes are arranged in the horizontal storage tank in parallel to the height direction and at intervals along the length direction.

Preferably, the air inlet ends of the three conveying pipes are communicated with the same air inlet pipe, the air inlet ends of the air inlet pipes are communicated with an air distribution table, and the air distribution table is used for providing high-pressure nitrogen.

Preferably, the opposite upper ends of the horizontal storage tank along the height direction are communicated with an exhaust pipe, and a release valve for releasing pressure is arranged on the exhaust pipe.

Preferably, the air outlet end of the conveying pipe is communicated with an air outlet pipe, the air outlet pipe is arranged parallel to the length direction, a through hole is formed in the air outlet pipe in a penetrating mode along the length direction, and the through hole is communicated with the air outlet end of the conveying pipe.

Preferably, a first pneumatic ball valve, a temperature regulating pump, a check valve, a second pneumatic ball valve, a first temperature sensor and a third pneumatic ball valve are sequentially arranged on the oil inlet pipeline along the flowing direction of the space kerosene; and a second temperature sensor and a fourth pneumatic ball valve are sequentially arranged on the oil outlet pipeline along the flowing direction of the space kerosene.

Preferably, a first pressure sensor and a second pressure sensor are respectively arranged at the inlet end and the outlet end of the temperature regulating pump on the oil inlet pipeline;

and/or a filter and a fifth pneumatic ball valve are arranged between the first pneumatic ball valve and the temperature regulating pump on the oil inlet pipeline, and the filter and the fifth pneumatic ball valve are sequentially arranged along the flowing direction of the space kerosene;

and/or a sixth pneumatic ball valve and a flowmeter are arranged between the second pneumatic ball valve and the first temperature sensor on the oil inlet pipeline, and the sixth pneumatic ball valve and the flowmeter are sequentially arranged along the flow direction of the space kerosene;

and/or a third pressure sensor and a seventh pneumatic ball valve are arranged between the first temperature sensor and the third pneumatic ball valve on the oil inlet pipeline, and the third pressure sensor and the seventh pneumatic ball valve are sequentially arranged along the flowing direction of the space kerosene;

and/or an electric regulating valve is arranged between the check valve and the second pneumatic ball valve on the oil inlet pipeline.

Preferably, the heat exchange assembly comprises a liquid nitrogen heat exchanger, a cold source inlet of the liquid nitrogen heat exchanger is communicated with a liquid nitrogen tank car for storing low-temperature liquid nitrogen, and a cold source outlet of the liquid nitrogen heat exchanger is used for discharging nitrogen formed by heat absorption and vaporization of the liquid nitrogen; the heat medium inlet of the liquid nitrogen heat exchanger is communicated with the oil inlet pipeline, and the heat medium outlet of the liquid nitrogen heat exchanger is communicated with the oil outlet pipeline, so that high-temperature space kerosene can absorb cold energy when flowing through the inside of the liquid nitrogen heat exchanger.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or the prior art will be briefly described, and it is obvious that the drawings in the description below are some embodiments of the present utility model, and other drawings can be obtained according to the drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic diagram of a cooling system according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a part of a cooling system according to an embodiment of the utility model.

Reference numerals illustrate:

1-horizontal storage tank, 11-exhaust pipe, 111-air release valve, 12-upper temperature sensor and 13-lower temperature sensor;

2-a liquid outlet pipe;

3-a liquid inlet pipe;

4-spraying pipes;

51-of an oil inlet pipeline, 52-of an oil outlet pipeline, 521-of a second temperature sensor, 522-of a fourth pneumatic ball valve, 53-of a liquid nitrogen heat exchanger and 54-of a liquid nitrogen tank car;

61-conveying pipes, 611-valves, 62-air inlet pipes and 63-air outlet pipes;

71-a first pneumatic ball valve, 72-a temperature regulating pump, 73-a check valve, 74-a second pneumatic ball valve, 75-a first temperature sensor and 76-a third pneumatic ball valve;

81-first pressure sensor, 82-second pressure sensor, 83-filter, 84-fifth pneumatic ball valve, 85-sixth pneumatic ball valve, 86-flowmeter, 87-third pressure sensor, 88-seventh pneumatic ball valve, 89-electric regulating valve.

Detailed Description

The following description of the embodiments of the present utility model will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the utility model are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

In addition, the technical features of the different embodiments of the present utility model described below may be combined with each other as long as they do not collide with each other.

As shown in fig. 1 and fig. 2, the cooling system provided in this embodiment is used for cooling the space kerosene, where the cooling system includes a horizontal storage tank 1 for storing the space kerosene and a heat exchange component, the horizontal storage tank 1 is communicated with a liquid outlet pipe 2, and a liquid inlet of the liquid outlet pipe 2 extends to an inner bottom of the horizontal storage tank 1; the horizontal storage tank 1 is also communicated with a liquid inlet pipe 3, and a liquid outlet of the liquid inlet pipe 3 extends to the inner bottom of the horizontal storage tank 1; an I-shaped spray pipe 4 is arranged at the top of the horizontal storage tank 1 along the height direction, the spray pipe 4 is arranged parallel to the width direction, and a spray hole communicated with an internal passage of the spray pipe 4 is arranged at the lower end of the horizontal storage tank along the height direction; the heat exchange assembly is used for cooling the space kerosene when the space kerosene flows through the heat exchange assembly, an inlet of the heat exchange assembly is communicated with a liquid outlet of the liquid outlet pipe 2 through an oil inlet pipeline 51, and an outlet of the heat exchange assembly is respectively communicated with a liquid inlet of the liquid inlet pipe 3 and the spray pipe 4 through an oil outlet pipeline 52. It will be appreciated that the lengthwise direction indicated in the embodiment of the present utility model refers to the lengthwise direction shown in fig. 2; the height direction expressed by the embodiment of the utility model refers to the height direction shown in fig. 2; the width direction expressed in the embodiment of the present utility model refers to a direction perpendicular to the longitudinal direction and the height direction shown in fig. 2, and the longitudinal direction, the height direction and the width direction form a cartesian three-dimensional coordinate system.

Compared with the prior art, the liquid outlet end of the oil outlet pipeline 52 is simultaneously communicated with the liquid inlet pipe 3 and the spray pipe 4, the liquid outlet of the liquid inlet pipe 3 extends to the inner bottom of the horizontal storage tank 1, the spray pipe 4 is arranged at the inner top of the horizontal storage tank 1, low-temperature space kerosene obtained by cooling through the heat exchange component can return to the inner bottom of the horizontal storage tank 1 through the liquid inlet pipe 3 and return to the inner top of the horizontal storage tank 1 through the spray hole of the spray pipe 4, and the heat exchange area of cold and hot kerosene is increased; the density of the space kerosene is increased along with the temperature reduction, the cooled low-temperature kerosene is downwards sprayed and settled into the tank bottom from the inner top of the horizontal storage tank 1 along the height direction, so that the heat exchange efficiency of the cold and hot kerosene in the tank is improved, obvious partition of the cold and hot space kerosene in the tank is effectively avoided, and the cooling time is shortened; meanwhile, the spray pipes 4 are arranged in an I shape and parallel to the width direction, so that the heat exchange area of cold and hot kerosene at the inner top of the horizontal storage tank 1 can be increased to a greater extent, and the heat exchange efficiency of the cold and hot kerosene in the tank is further improved. Meanwhile, the spray pipe 4 is arranged in an I shape, so that the spray area of the I-shaped spray pipe 4 is larger compared with that of a single spray arrangement pipe along the length direction, the heat exchange area of cold and hot kerosene is larger, and the cooling time is shortened.

Specifically, the height position of the spraying pipe 4 along the height direction is located at the highest liquid level of the space kerosene stored in the horizontal storage tank 1, so that the low-temperature space kerosene achieves the optimal spraying effect in the process of spraying out of the spraying pipe 4, and the cooling time is further shortened.

As shown in fig. 2, in some embodiments of the present utility model, the liquid inlet pipe 3 and the liquid outlet pipe 2 are parallel to the height direction and respectively disposed at two sides of the horizontal tank 1 along the length direction. Through the liquid outlet of the liquid inlet pipe 3 and the liquid inlet of the liquid outlet pipe 2 are respectively arranged on two sides of the horizontal storage tank 1 along the length direction, low-temperature kerosene just returning to the horizontal storage tank 1 from the liquid outlet of the liquid inlet pipe 3 can be effectively avoided, and the low-temperature kerosene is conveyed to the oil inlet pipeline 51 from the liquid inlet of the liquid outlet pipe 2 under the action of pumping without heat exchange, so that the heat exchange efficiency of cold kerosene and hot kerosene in the tank is improved, and the cooling time is shortened.

As shown in fig. 1, in some embodiments of the present utility model, the cooling system further includes a delivery pipe 61 for delivering high-pressure nitrogen, and an air outlet end of the delivery pipe 61 communicates with the horizontal tank 1 and extends to an inner bottom of the horizontal tank 1. In the process of cooling, high-pressure nitrogen is conveyed to the inner bottom of the horizontal storage tank 1 through the conveying pipe 61, the high-pressure nitrogen bubbles from the inner bottom of the horizontal storage tank 1 to the inner top of the horizontal storage tank 1, and the low-temperature kerosene and the kerosene with higher temperature are mixed in a disturbance manner, so that the thermal movement of kerosene molecules is promoted, the occurrence of subareas of cold and hot space kerosene in the tank is avoided more effectively, and the kerosene temperature in the horizontal storage tank 1 is more balanced. In order to better mix the low-temperature kerosene and the higher-temperature kerosene at various positions in the longitudinal direction in the horizontal tank 1 by disturbance, the uniformity of the kerosene temperature in the horizontal tank 1 is further improved, and as shown in fig. 2, particularly, three of the conveying pipes 61 are preferably arranged in the horizontal tank 1 in parallel to the height direction and at intervals in the longitudinal direction. In a specific application, the number of the conveying pipes 61 in the present embodiment may be increased or decreased reasonably according to the dimension of the horizontal tank 1 in the length direction, for example, the number of the conveying pipes 61 may be one, two, four, or the like.

As shown in fig. 2, in some embodiments of the present utility model, the air inlet ends of the three conveying pipes 61 are connected to the same air inlet pipe 62, and the air inlet ends of the air inlet pipes 62 are connected to an air distribution table (not shown in the drawing) for supplying high-pressure nitrogen. By means of the arrangement, only one air inlet pipe 62 is needed to be arranged, high-pressure nitrogen can be simultaneously supplied to the three conveying pipes 61, so that the high-pressure nitrogen is almost simultaneously output from three positions of the horizontal storage tank 1 which are distributed at intervals along the length direction, the structure is simple, and the effect of mixing low-temperature kerosene and higher-temperature kerosene in a disturbance mode is good. In order to freely control the on-off of each conveying pipe 61, as shown in fig. 2, specifically, each conveying pipe 61 is provided with a valve 611 for controlling the on-off of the conveying pipe 61.

In order to avoid the danger caused by the continuous enhancement of the pressure inside the horizontal storage tank 1 after the high-pressure nitrogen is introduced into the horizontal storage tank 1, as shown in fig. 2, in some embodiments of the present utility model, the opposite upper ends of the horizontal storage tank 1 along the height direction are communicated with an exhaust pipe 11, and the exhaust pipe 11 is provided with a release valve 111 for releasing pressure, so that the pressure inside the horizontal storage tank 1 is always kept in a safe range by releasing the pressure through the release valve 111, and the danger caused by the overlarge pressure inside the horizontal storage tank 1 is effectively avoided.

As shown in fig. 1 and 2, in some embodiments of the present utility model, the air outlet end of the conveying pipe 61 is communicated with an air outlet pipe 63, the air outlet pipe 63 is arranged parallel to the length direction, and a through hole is formed in the air outlet pipe 63 along the length direction, and the through hole is communicated with the air outlet end of the conveying pipe 61. High-pressure nitrogen is simultaneously introduced into two positions of the inner bottom of the horizontal storage tank 1 along the two ends of the length direction through the air outlet pipe 63, so that low-temperature kerosene and higher-temperature kerosene at each position of the horizontal storage tank 1 along the length direction at intervals are better mixed in a stirring manner, and the temperature balance of the kerosene in the horizontal storage tank 1 is further improved.

As shown in fig. 1, in some embodiments of the present utility model, a first pneumatic ball valve 71, a temperature-adjusting pump 72, a check valve 73, a second pneumatic ball valve 74, a first temperature sensor 75, and a third pneumatic ball valve 76 are sequentially disposed on the oil inlet pipe 51 along the flow direction of the aviation kerosene; the second temperature sensor 521 and the fourth pneumatic ball valve 522 are sequentially arranged on the oil outlet pipeline 52 along the flow direction of the aviation kerosene. The high-temperature kerosene in the horizontal storage tank 1 can be conveyed to the heat exchange component to absorb cold energy to cool down to low-temperature kerosene through the pumping action of the temperature regulating pump 72, and then conveyed back to the horizontal storage tank 1 to exchange heat with the high-temperature kerosene, so that the integral cooling of the kerosene is realized; meanwhile, the check valve 73 can effectively prevent the kerosene from flowing backwards, so that accidents are reduced; by respectively arranging the first temperature sensor 75 and the second temperature sensor 521 on the oil inlet pipeline 51 and the oil outlet pipeline 52, and comparing the temperature value of kerosene monitored by the first temperature sensor 75 with the temperature value of kerosene monitored by the second temperature sensor 521, whether the heat exchange efficiency of the heat exchange assembly is normal or not can be judged, so that whether the heat exchange assembly is damaged or not can be judged; by reading the temperature value of the kerosene monitored by the first temperature sensor 75, whether the kerosene in the horizontal storage tank 1 is cooled to a required temperature range can be judged, so that the start and stop of the cooling system are controlled; the first pneumatic ball valve 71, the second pneumatic ball valve 74 and the third pneumatic ball valve 76 are sequentially arranged on the oil inlet pipeline 51 along the flowing direction of the space kerosene, so that on one hand, the reliability of controlling the on-off of the oil inlet pipeline 51 can be improved, and on the other hand, the oil inlet pipeline 51 can be disconnected in sections by controlling the pneumatic ball valves at corresponding positions to be closed, so that devices positioned in the disconnection range can be replaced or maintained.

As shown in fig. 1, in some embodiments of the present utility model, a first pressure sensor 81 and a second pressure sensor 82 are respectively disposed on the oil inlet pipe 51 at the inlet end and the outlet end of the temperature-adjusting pump 72. By comparing the pressure value detected by the first pressure sensor 81 with the pressure value detected by the second pressure sensor 82, the hydraulic pressure of the space kerosene before entering the temperature adjusting pump 72 and the hydraulic pressure change of the space kerosene after exiting the temperature adjusting pump 72 can be judged, so that the working condition of the temperature adjusting pump 72 can be judged. In order to more accurately judge the pressure values of the aviation kerosene at different positions along the flow direction of the aviation kerosene on the oil inlet pipeline 51, specifically, a third pressure sensor 87 and a seventh pneumatic ball valve 88 are arranged between the first temperature sensor 75 and the third pneumatic ball valve 76 on the oil inlet pipeline 51, and the third pressure sensor 87 and the seventh pneumatic ball valve 88 are sequentially arranged along the flow direction of the aviation kerosene.

In order to avoid the above problem, in some embodiments of the present utility model, a filter 83 and a fifth pneumatic ball valve 84 are disposed on the oil inlet pipe 51 between the first pneumatic ball valve 71 and the temperature-adjusting pump 72, and the filter 83 and the fifth pneumatic ball valve 84 are disposed in sequence along the flow direction of the aviation kerosene; by closing the fifth pneumatic ball valve 84 and the first pneumatic ball valve 71, the portion of the oil feed line 51 where the filter 83 is provided can be disconnected for maintenance or replacement of the filter 83.

In order to better monitor the flow of the space kerosene flowing in the oil inlet pipeline 51 in real time, the working condition of the cooling system of the embodiment is monitored more accurately; as shown in fig. 1, in some embodiments of the present utility model, a sixth pneumatic ball valve 85 and a flow meter 86 are disposed on the oil inlet pipe 51 between the second pneumatic ball valve 74 and the first temperature sensor 75, and the sixth pneumatic ball valve 85 and the flow meter 86 are sequentially disposed along the flow direction of the aviation kerosene.

To further improve the automation degree and the operation reliability of the cooling system of the present embodiment, in some embodiments of the present utility model, an electric control valve 89 is disposed on the oil inlet pipe 51 between the check valve 73 and the second pneumatic ball valve 74.

As shown in fig. 1, in some embodiments of the present utility model, the heat exchange assembly includes a liquid nitrogen heat exchanger 53, a cold source inlet of the liquid nitrogen heat exchanger 53 is connected to a liquid nitrogen tank car 54 for storing low-temperature liquid nitrogen, and a cold source outlet of the liquid nitrogen heat exchanger 53 is used for discharging nitrogen formed by heat absorption and vaporization of the liquid nitrogen; the heat medium inlet of the liquid nitrogen heat exchanger 53 is communicated with the oil inlet pipeline 51, and the heat medium outlet of the liquid nitrogen heat exchanger 53 is communicated with the oil outlet pipeline 52; the low-temperature liquid nitrogen in the liquid nitrogen tank wagon 54 is continuously supplemented into the liquid nitrogen heat exchanger 53 as a refrigerant, and when the higher-temperature kerosene which is conveyed into the liquid nitrogen heat exchanger 53 through the oil inlet pipeline 51 passes through the inside of the liquid nitrogen heat exchanger 53, the higher-temperature kerosene absorbs the cold energy of the low-temperature liquid nitrogen to cool down into low-temperature kerosene, the low-temperature kerosene returns into the horizontal storage tank 1 through the oil outlet pipeline 52, and nitrogen formed by the low-temperature liquid nitrogen through heat absorption and vaporization is discharged from a cold source outlet of the liquid nitrogen heat exchanger 53, so that the effect of rapidly cooling the space kerosene when the space kerosene flows through the liquid nitrogen heat exchanger 53 is realized. It will be appreciated that the inner cavity of the liquid nitrogen heat exchanger 53 is communicated with a heat exchange tube through which the space kerosene flows, so that in the process that the higher-temperature kerosene which is conveyed into the heat exchange tube through the oil inlet pipeline 51 passes through the inside of the heat exchange tube, the higher-temperature kerosene absorbs the cold energy of the low-temperature liquid nitrogen to cool down into low-temperature kerosene, and then the low-temperature kerosene returns to the horizontal storage tank 1 through the oil outlet pipeline 52.

As shown in fig. 2, in some embodiments of the present utility model, a set of temperature detecting components are respectively disposed on two inner walls of the horizontal tank 1 along the length direction, and each set of temperature detecting components includes an upper temperature sensor 12 and a lower temperature sensor 13 that are disposed on the inner wall of the horizontal tank 1 at intervals from top to bottom along the height direction. The two temperature detection assemblies can be used for measuring the temperature of two different height positions and two sides along the length direction of the space kerosene in the horizontal storage tank 1, and comparing whether the four measured temperature values are the same or have small difference, so that whether the space kerosene in the horizontal storage tank 1 is cooled and balanced can be judged more accurately.

It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the utility model.

Claims (10)

1. A cooling system for cool down space kerosene, its characterized in that, cooling system includes:

the horizontal storage tank (1) is used for storing space kerosene;

the liquid outlet pipe (2) is communicated with the horizontal storage tank (1), and a liquid inlet of the liquid outlet pipe (2) extends to the inner bottom of the horizontal storage tank (1);

the liquid inlet pipe (3) is communicated with the horizontal storage tank (1), and a liquid outlet of the liquid inlet pipe (3) extends to the inner bottom of the horizontal storage tank (1);

the I-shaped spray pipes (4) are arranged at the top of the horizontal storage tank (1) along the height direction, the spray pipes (4) are arranged parallel to the width direction, and spray holes are formed in the lower end of the horizontal storage tank along the height direction;

the heat exchange assembly is used for cooling the space kerosene when the space kerosene flows through the heat exchange assembly, an inlet of the heat exchange assembly is communicated with a liquid outlet of the liquid outlet pipe (2) through an oil inlet pipeline (51), and an outlet of the heat exchange assembly is respectively communicated with a liquid inlet of the liquid inlet pipe (3) and the spray pipe (4) through an oil outlet pipeline (52).

2. The cooling system according to claim 1, wherein the liquid inlet pipe (3) and the liquid outlet pipe (2) are parallel to the height direction and are respectively arranged at two sides of the horizontal storage tank (1) along the length direction.

3. A cooling system according to claim 1, further comprising a delivery pipe (61) for delivering high pressure nitrogen, the outlet end of the delivery pipe (61) being in communication with the horizontal tank (1) and extending to the inner bottom of the horizontal tank (1).

4. A cooling system according to claim 3, characterized in that the said conveying pipes (61) are provided in three, and that the three conveying pipes (61) are each arranged in parallel to the height direction and at intervals in the length direction in the said horizontal tank (1).

5. A cooling system according to claim 4, characterized in that the air inlet ends of three said delivery pipes (61) are connected to the same air inlet pipe (62), the air inlet ends of said air inlet pipes (62) are connected to an air distribution table for supplying high pressure nitrogen.

6. A cooling system according to claim 3, characterized in that the opposite upper ends of the horizontal tank (1) in the height direction are connected with an exhaust pipe (11), and the exhaust pipe (11) is provided with a relief valve (111) for pressure relief.

7. A cooling system according to any one of claims 3 to 6, wherein the air outlet end of the conveying pipe (61) is communicated with an air outlet pipe (63), the air outlet pipe (63) is arranged parallel to the length direction, a through hole is formed in the air outlet pipe (63) along the length direction in a penetrating manner, and the through hole is communicated with the air outlet end of the conveying pipe (61).

8. The cooling system according to claim 1, wherein the oil inlet pipeline (51) is sequentially provided with a first pneumatic ball valve (71), a temperature regulating pump (72), a check valve (73), a second pneumatic ball valve (74), a first temperature sensor (75) and a third pneumatic ball valve (76) along the flow direction of the aviation kerosene; and a second temperature sensor (521) and a fourth pneumatic ball valve (522) are sequentially arranged on the oil outlet pipeline (52) along the flow direction of the space kerosene.

9. A cooling system according to claim 8, characterized in that the inlet end and the outlet end of the oil inlet pipeline (51) at the temperature regulating pump (72) are respectively provided with a first pressure sensor (81) and a second pressure sensor (82);

and/or a filter (83) and a fifth pneumatic ball valve (84) are arranged between the first pneumatic ball valve (71) and the temperature regulating pump (72) on the oil inlet pipeline (51), and the filter (83) and the fifth pneumatic ball valve (84) are sequentially arranged along the flowing direction of the space kerosene;

and/or a sixth pneumatic ball valve (85) and a flowmeter (86) are arranged between the second pneumatic ball valve (74) and the first temperature sensor (75) on the oil inlet pipeline (51), and the sixth pneumatic ball valve (85) and the flowmeter (86) are sequentially arranged along the flow direction of the aviation kerosene;

and/or a third pressure sensor (87) and a seventh pneumatic ball valve (88) are arranged between the first temperature sensor (75) and the third pneumatic ball valve (76) on the oil inlet pipeline (51), and the third pressure sensor (87) and the seventh pneumatic ball valve (88) are sequentially arranged along the flow direction of the aerospace kerosene;

and/or an electric regulating valve (89) is arranged between the check valve (73) and the second pneumatic ball valve (74) on the oil inlet pipeline (51).

10. A cooling system according to claim 1, wherein the heat exchange assembly comprises a liquid nitrogen heat exchanger (53), a cold source inlet of the liquid nitrogen heat exchanger (53) is communicated with a liquid nitrogen tank car (54) for storing low-temperature liquid nitrogen, and a cold source outlet of the liquid nitrogen heat exchanger (53) is used for discharging nitrogen formed by heat absorption and vaporization of the liquid nitrogen; the heat medium inlet of the liquid nitrogen heat exchanger (53) is communicated with the oil inlet pipeline (51), and the heat medium outlet of the liquid nitrogen heat exchanger (53) is communicated with the oil outlet pipeline (52) so as to absorb cold energy when high-temperature space kerosene flows through the liquid nitrogen heat exchanger (53).