Crude oil heat exchanger of directly-heated carbon dioxide air source heat pump

Abstract

The utility model belongs to the technical field of heat exchangers, and particularly relates to a crude oil heat exchanger of a directly-heated carbon dioxide air source heat pump, which comprises a barrel body, a crude oil inlet arranged at the bottom of the barrel body, a crude oil outlet arranged at the top of the barrel body, a coil pipe arranged in the barrel body, and a carbon dioxide inlet and a carbon dioxide outlet arranged on the side wall of the barrel body, one end of the coil is communicated with the carbon dioxide inlet, and the other end of the coil is communicated with the carbon dioxide outlet. The carbon dioxide heat pump is adopted for crude oil heat exchange, and the device has the advantages of being high in environmental friendliness, efficient, energy-saving and stable in heating.

Description

TECHNICAL FIELD

[0001] The utility model belongs to heat exchanger technical field, concretely relates to a direct heating type carbon dioxide air source heat pump crude oil heat exchanger. BACKGROUND

[0002] In the process of oil exploitation, the crude oil is extracted from the bottom of the earth, and the temperature is about 20-40 DEG C. Due to the particularity of crude oil, after being extracted, it needs to be stored in an oil tank and then transported to a refinery. However, many exploitation areas are in severe cold regions, and it is important to heat and insulate the crude oil for convenient transportation and to ensure the quality of the crude oil. Common heating methods such as fuel oil, gas and electric heating not only have high energy consumption, unstable heating, but also pollute the environment. SUMMARY

[0003] Therefore, the utility model wants to solve the problems of high energy consumption, unstable heating and environmental pollution in the prior art.

[0004] Therefore, the utility model wants to solve the problems of high energy consumption, unstable heating and environmental pollution in the prior art.

[0005] Preferably, the bottom end of the cylinder is provided with a crude oil blowdown port.

[0006] Preferably, the coil is spiral and multiple, and the one end of the multiple coils is communicated with the carbon dioxide inlet through the first distributor, and the other end of the multiple coils is communicated with the carbon dioxide outlet through the second distributor.

[0007] Preferably, the cylinder is provided with an auxiliary electric heater, the lower end of the auxiliary electric heater extends into the coil, and the upper end of the auxiliary electric heater extends out of the cylinder.

[0008] Preferably, the bottom of the cylinder is provided with a base, and the base is connected with the side wall of the cylinder through a support.

[0009] Preferably, the top end of the cylinder is provided with an upper head, and the upper head is provided with a crude oil outlet.

[0010] Preferably, the bottom end of the cylinder is provided with a lower head, and the lower head is provided with a crude oil blowdown port.

[0011] The utility model discloses the following advantages: carbon dioxide air source heat pump compresses carbon dioxide refrigerant into high-temperature high-pressure gas into the coil through carbon dioxide gas inlet, then goes out from carbon dioxide gas outlet, enters heat pump expansion valve, evaporator and carries out system circulation, this process repeats, and crude oil enters from crude oil import simultaneously, exchanges heat with high-temperature carbon dioxide, heats crude oil to demand temperature, and then discharges from crude oil export.

[0012] Other features and advantages of the present application will be set forth in the following description of the application, and in part will become apparent to those skilled in the art upon examination of the following or can be learned by practice of the application. The objects and other advantages of the application can be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.

[0013] The technical scheme of the utility model will be further described in detail below with the drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0014] The accompanying drawings are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:

[0015] Figure 1 is the front view of the utility model;

[0016] Figure 2 is the side view of the utility model;

[0017] Figure 3 is the A-A section view of Figure 2 ;

[0018] Wherein, 1, cylinder body;2, crude oil import;3, crude oil export;4, coil;5, carbon dioxide gas inlet;6, carbon dioxide gas outlet;7, crude oil blowdown;8, first liquid separator;9, second liquid separator;10, auxiliary electric heater;11, base;12, support;13, upper head;14, lower head. DETAILED DESCRIPTION

[0019] In order to make the technical problem, technical scheme and beneficial effect of the utility model to be solved more clearly, the following combines the drawings and examples, and the utility model is further described in detail. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0020] It should be noted that when a component is referred to as being "fixed" or "set" on another component, it can be directly on the other component or indirectly on the other component. When a component is referred to as being "connected" to another component, it can be directly or indirectly connected to the other component.

[0021] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0022] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0023] The utility model provides a kind of direct-fired carbon dioxide air source heat pump crude oil heat exchanger, such as Figures 1-3As shown, including: cylinder 1, the bottom of cylinder 1 is provided with crude oil inlet 2, the top of cylinder 1 is provided with crude oil outlet 3, the inside of cylinder 1 is provided with coil 4, the sidewall of cylinder 1 is provided with carbon dioxide gas inlet 5 and carbon dioxide gas outlet 6, one end of coil 4 is communicated with carbon dioxide gas inlet 5, the other end of coil 4 is communicated with carbon dioxide gas outlet 6. The bottom end of cylinder 1 is provided with crude oil blowdown 7, when circulating for a certain time, the impurities in the crude oil are intermittently discharged. Coil 4 is spiral-shaped, and multiple coil 4s are arranged, which can improve the heating efficiency, one end of multiple coil 4s is communicated with carbon dioxide gas inlet 5 through first distributor 8, the other end of multiple coil 4s is communicated with carbon dioxide gas outlet 6 through second distributor 9, first distributor 8 is used for uniformly delivering high-temperature and high-pressure carbon dioxide gas input from carbon dioxide gas inlet 5 to multiple coil 4s, second distributor 9 is used for collecting carbon dioxide after heat exchange and discharging the carbon dioxide through carbon dioxide gas outlet 6. Auxiliary electric heater 10 is arranged in cylinder 1, the lower end of auxiliary electric heater 10 extends into coil 4, and the upper end of auxiliary electric heater 10 extends out of cylinder 1. The bottom of cylinder 1 is provided with base 11, base 11 is connected with the sidewall of cylinder 1 through support 12, and stable support is provided. The top end of cylinder 1 is provided with upper head 13, upper head 13 is provided with crude oil outlet 3, the bottom end of cylinder 1 is provided with lower head 14, lower head 14 is provided with crude oil blowdown 7, upper head 13 and lower head 14 are convenient to open, and the parts in cylinder 1 are maintained. The carbon dioxide heat pump is a heat pump system taking carbon dioxide as refrigerant, and the core realizes efficient heat transfer through transcritical cycle.

[0024] The working principle and beneficial technical effects of the above technical solution are as follows: the carbon dioxide air source heat pump compresses carbon dioxide refrigerant into high-temperature and high-pressure gas, which enters coil 4 through carbon dioxide gas inlet 5, and then goes out of carbon dioxide gas outlet 6, enters heat pump expansion valve, evaporator and other systems for circulation, and the process is repeated. At the same time, crude oil enters from crude oil inlet 2, exchanges heat with high-temperature carbon dioxide, heats the crude oil to the required temperature, and then discharges from crude oil outlet 3. When circulating for a certain time, the impurities in the crude oil are intermittently discharged through crude oil blowdown 7. When auxiliary heating of the crude oil is needed in an extremely cold environment, auxiliary electric heater 10 is started to assist the heating of the crude oil. The carbon dioxide heat pump is used for crude oil heat exchange, which has the advantages of high environmental protection, high efficiency, energy saving and stable heating.

[0025] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Therefore, if these modifications and variations of the present application belong to the scope of the claims of the present application and the equivalent technology, the present application also intends to include these modifications and variations.

Claims

1. A direct-fired carbon dioxide air source heat pump crude oil heat exchanger, characterized by, Include: The barrel (1) is provided with crude oil inlet (2) at the bottom of barrel (1), barrel (1) is provided with crude oil outlet (3) at the top of barrel (1), coil (4) is arranged in barrel (1), carbon dioxide inlet (5) and carbon dioxide outlet (6) are arranged on the side wall of barrel (1), one end of coil (4) is communicated with carbon dioxide inlet (5), the other end of coil (4) is communicated with carbon dioxide outlet (6).

2. A direct-fired carbon dioxide air source heat pump exchanger for crude oil as recited in claim 1, wherein, The barrel (1) is provided with crude oil outlet (7) at the bottom end.

3. A direct-fired carbon dioxide air source heat pump exchanger for crude oil as recited in claim 1, wherein, The coil (4) is spiral, and a plurality of coils (4) are arranged, one end of the plurality of coils (4) is communicated with the carbon dioxide inlet (5) through the first distributor (8), the other end of the plurality of coils (4) is communicated with the carbon dioxide outlet (6) through the second distributor (9).

4. A direct-fired carbon dioxide air source heat pump exchanger for crude oil as recited in claim 1, wherein, The barrel (1) is provided with auxiliary electric heater (10), the lower end of auxiliary electric heater (10) extends into coil (4), the upper end of auxiliary electric heater (10) extends out of barrel (1).

5. A direct-fired carbon dioxide air source heat pump exchanger for crude oil as recited in claim 1, wherein, The barrel (1) is provided with base (11) below, the base (11) is connected with the side wall of barrel (1) through support (12).

6. A direct-fired carbon dioxide air source heat pump exchanger for crude oil as recited in claim 1, wherein, The barrel (1) is provided with upper head (13) at the top end, the upper head (13) is provided with crude oil outlet (3).

7. A direct-fired carbon dioxide air source heat pump exchanger for crude oil as recited in claim 1, wherein, The barrel (1) is provided with lower head (14) at the bottom end, the lower head (14) is provided with crude oil outlet (7).

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