CN204665998U - A kind of heat-storing device - Google Patents

Abstract

The utility model provides a kind of heat-storing device, and comprise body and be arranged at least one heat exchange pipeline on body, this heat exchange pipeline runs through along the bearing of trend of body; Also comprise be arranged at least one on body for the water back of auxiliary heating.The heat-storing device utilizing the utility model to provide can utilize the energy more fully, avoids the waste of resource.

Description

a heat storage device

technical field

The utility model relates to the field of solar heat storage, in particular to a heat storage device

Background technique

As we all know, with the depletion of non-renewable energy, people are trying to find the utilization of renewable new energy at this stage. Among them, solar thermal power generation is an important direction of new energy utilization, because it can greatly reduce the cost of solar power generation, it is widely used.

Solar thermal power generation usually uses a mirror field composed of a large-scale array of mirrors to collect solar energy, generate steam, and combine traditional turbogenerator technology to achieve the purpose of power generation. Since solar thermal power generation can only receive sunlight to generate steam for power generation during the day, and there is excess heat, a heat storage body is required to store the excess heat generated by the reflector field during the day, and it will be used at night and in cloudy weather. The heat is then extracted to ensure the all-weather continuous and stable operation of the solar thermal power plant and improve the utilization efficiency of the solar energy system.

At present, solar thermal power generation is mostly combined with other power generation methods for power generation, such as installing wind power generation devices and photovoltaic power generation devices in solar thermal power plants, but the output power of wind power generation devices and photovoltaic power generation devices is unstable, which is not conducive to grid connection Power supply, if not properly utilized, will result in a waste of energy. Therefore, there is an urgent need to discover new ways to utilize this part of the power.

Contents of the invention

The purpose of the utility model is to provide a heat storage device, which can make full use of energy and avoid waste of resources.

A heat storage device provided by the utility model includes a body and at least one heat exchange pipe arranged on the body, and the heat exchange pipe runs through along the extending direction of the body; it also includes a heat exchange pipe arranged on the body At least one heating duct for auxiliary heating.

Further, the heating pipe extends along the extending direction of the main body.

Further, there are a plurality of heat exchange pipes, and a plurality of adjacent heat exchange pipes form a heat exchange unit arranged in a regular polygon on the cross section of the body, and the plurality of heat exchange units are in the The cross-section of the body is arranged in a rectangular array;

Wherein, the heat exchange unit is provided with the heating pipe at the center of the cross section of the body.

Further, the outer wall of the heating pipe is provided with outwardly extending fins.

Further, the outer wall of the heat exchange pipe is provided with outwardly extending fins.

Preferably, an electric heating element is arranged inside the heating pipe.

Further, the electric heating element is connected with a photovoltaic power generation device and/or a wind power generation device.

Compared with the prior art, the heat storage device provided by the utility model, by arranging at least one heating pipe for auxiliary heating on the body, stores the heat in the heating pipe in the body, effectively utilizing other energy sources of the photothermal power station .

Further, the heating pipe extends along the extension direction of the body, which is consistent with the extension direction of the heat exchange pipe, so that the temperature distribution inside the body is uniform.

Further, a plurality of adjacent heat exchange pipes form a heat exchange unit arranged in a regular polygon on the cross section of the body, and the plurality of heat exchange units are arranged in a rectangular array on the cross section of the body, which is convenient for the heat exchange pipes to Uniform heat exchange with the body; at the same time, the heat exchange unit is provided with a heating pipe at the center of the cross section of the body, which is conducive to uniform heat transfer between the heating pipe and the body.

Preferably, by arranging outwardly extending fins on the outer wall of the heat exchange pipe, the heat exchange area between the heat exchange pipe and the body is increased, and the heat exchange efficiency is improved.

Further, by arranging outwardly extending fins on the outer wall of the heating pipe, the heat transfer area between the heating pipe and the body is increased, and the heat transfer efficiency is improved.

Furthermore, by arranging electric heating elements inside the heating pipe, the electric energy is converted into heat energy and stored in the heat storage device, which is convenient for taking heat and utilizing it when needed.

Preferably, the electric heating element is connected with the photovoltaic power generation device and/or the wind power generation device, and the electric energy generated by the photovoltaic power generation device and the unstable electric energy generated by the wind power generation device are converted into heat energy through the electric heating element, and the heat energy is stored in the In the heat storage device, it is convenient to take heat and use it to obtain steam when needed, and drive the steam turbine to generate electricity.

Description of drawings

Hereinafter, the present invention will be described in more detail based on non-limiting examples only and with reference to the accompanying drawings. in:

Fig. 1 is a schematic structural diagram of a heat storage device provided by Embodiment 2 of the present invention.

Description of drawings:

1-body, 2-heat exchange pipe, 3-heating pipe

Detailed ways

The following is a clear and complete description of the technical solutions in the embodiments of the utility model in conjunction with the accompanying drawings and embodiments. Apparently, the described embodiments are only part of the embodiments of the utility model, not all of them. Based on the embodiments of the present utility model, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

Embodiment one

The heat storage device provided in this embodiment includes a body and at least one heat exchange pipe arranged on the body, the heat exchange pipe runs through along the extending direction of the body, and at least one heating pipe arranged on the body for auxiliary heating .

In the heat storage device of this embodiment, the high-temperature heat exchange medium is exchanged with the main body through the heat exchange pipe, and then the heat is stored in the main body. The waste gas and waste liquid with a certain temperature generated in the station are transported to the heating pipe, and through the heating pipe, part of the heat is transferred to the body and stored in the body of the heat storage device. At night or in rainy days, it can be taken from the heat storage device. The heat becomes steam, which drives a steam turbine to generate electricity. In addition, other auxiliary power generation devices installed in solar-thermal power stations, such as photovoltaic power generation devices and wind power generation devices, generally have unstable power generated by wind power generation devices, and it is difficult to connect wind power to the grid. Part of the wind power must be abandoned, resulting in wind power loss The actual utilization rate is low. Therefore, the electric energy generated by the photovoltaic power generation device and the wind power generation device can be converted into heat energy through the heating pipe, and the heat energy can be further stored in the heat storage device, which is convenient for heat extraction to obtain steam and drive the steam turbine to generate electricity. , thus using energy efficiently.

In addition, the heating pipe used for auxiliary heating in this embodiment can be a heating channel naturally formed by the body, or a heating channel formed by embedding metal tubes or glass tubes on the body.

Embodiment two

As shown in Figure 1, the heat storage device provided by this embodiment includes a body 1 and at least one heat exchange pipe 2 arranged on the body 1, the heat exchange pipe 2 runs through the extension direction of the body 1, and also includes a heat exchange pipe 2 arranged on the body 1. 1 at least one heating pipe 3 for auxiliary heating.

Among them, the heating pipe 3 can be arranged in a variety of ways. For example, the extension direction of the heating pipe 3 can be arranged perpendicular to the extension direction of the body 1. In order to make the heat storage device uniformly heated as a whole, the internal temperature distribution is uniform, and the heat storage device is avoided due to temperature distribution. Uneven and cracked, it is preferable to arrange the heating pipe 3 extending along the extending direction of the main body 1 .

As shown in Figure 1, in order to further increase the heat storage capacity of the heat storage device and obtain a heat storage device with uniform temperature distribution, there can be multiple heat exchange pipes 2, and the adjacent multiple heat exchange pipes 2 form a single body. A heat exchange unit arranged in a regular polygon on the cross section of the body 1, and a plurality of heat exchange units are arranged in a rectangular array on the cross section of the body 1, wherein the heat exchange unit is arranged at the center of the cross section of the body 1 The heating pipe 3 stores the heat in the heat storage body, which is convenient for taking heat from the heat storage device to obtain steam, and driving the steam turbine to generate electricity.

In order to increase the heat exchange area between the heat exchange pipe 2 and the body 1, outwardly extending fins can be provided on the outer wall of the heat exchange pipe 2, and the heat exchange area can be increased by the outwardly extending fins. In addition, fins extending outward can also be provided on the outer wall of the heating pipe 3 to increase the heat transfer area between the heating pipe 3 and the body 1, and the body 1 can be better heated through the heating pipe 3, thereby storing heat in the storage tank. inside the heating unit.

In order to facilitate the understanding of the heat storage and heat exchange process of the heat storage device, the following content will describe the heat storage and heat exchange process of the heat storage device. When the heat storage device stores heat, a high-temperature medium is passed into the heat exchange pipe 2, and the high-temperature medium exchanges heat with the body 1 through the heat exchange pipe 2, and stores heat in the body 1; in addition, the heating pipe 3 can The waste gas and waste liquid with a certain temperature generated by the photothermal power plant are passed through the heating pipe 3 to heat the body 1, and the waste heat is recovered and stored in the body 1, which is convenient for heat extraction and utilization when needed. Furthermore, electric heating elements can be arranged inside the heating pipe 3, such as electric heating rods, etc., and the electric heating elements are connected with photovoltaic power generation devices and/or wind power generation devices, and the electric energy generated by photovoltaic power generation devices and/or wind power generation devices Power is supplied to the electric heating element, and the electric energy is converted into heat energy. The electric heating element in the heating pipe 3 further stores the heat in the body 1 to obtain a heat storage device with large heat storage capacity. Thereby making full use of energy and avoiding the waste of resources.

When the heat is taken from the heat storage device, a low-temperature medium can be introduced into the heat exchange pipe 2, and the low-temperature medium absorbs the heat in the body 1 through the heat exchange pipe, and the temperature rises, such as the water in the heat exchange pipe 2 By absorbing the heat of the main body 1, the temperature rises to obtain water vapor, which can drive the steam turbine to generate electricity to generate electricity.

Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present utility model, rather than to limit it; although the utility model has been described in detail with reference to the aforementioned embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims (5)

1. A heat storage device, characterized in that it comprises a body and at least one heat exchange pipe arranged on the body, the heat exchange pipe runs through along the extending direction of the body; it also includes a heat exchange pipe arranged on the body At least one heating pipe for auxiliary heating; the heating pipe extends along the extension direction of the body; there are multiple heat exchange pipes, and a plurality of adjacent heat exchange pipes form a A heat exchange unit arranged in a regular polygon on the cross section, and a plurality of the heat exchange units are arranged in a rectangular array on the cross section of the body; wherein, the heat exchange unit on the cross section of the body The heating pipe is arranged at the center. 2. The heat storage device according to claim 1, wherein the outer wall of the heating pipe is provided with fins extending outward. 3. The heat storage device according to claim 1, wherein the outer wall of the heat exchange pipe is provided with fins extending outward. 4. The heat storage device according to any one of claims 1 to 3, wherein an electric heating element is arranged inside the heating pipe. 5. The heat storage device according to claim 4, wherein the electric heating element is connected with a photovoltaic power generation device and/or a wind power generation device.