Constant temperature output system for high temperature solid storage equipment

Abstract

The constant temperature output system of high-temperature solid storage equipment relates to the field of solid heat storage products. The present invention is to solve the problem that existing solid heat storage products lack a system for constant temperature control. The incident gas enters the low-temperature air duct and the mixing air duct at the same time. The gas output from the low-temperature air duct enters the solid storage equipment for heating, and the heated gas is output. The main fan is set on the low-temperature air duct; the gas output from the mixing air duct and the heated gas output from the solid storage equipment converge to form a mixed gas, which is output through the high-temperature air duct, and the mixed air fan is set on the mixing air duct; the temperature sensor is used to collect the temperature of the mixed gas; the controller is used to compare the temperature of the mixed gas with the set temperature. If the temperature of the mixed gas is greater than the preset temperature, the frequency of the mixed air fan is increased, and the frequency of the main fan is reduced. If the temperature of the mixed gas is less than the preset temperature, the frequency of the main fan is increased, and the frequency of the mixed air fan is reduced. The present invention is used for constant temperature output.

Description

Technical Field

[0001] The invention relates to the field of solid heat storage products, and belongs to the control of temperature and air volume. Background Art

[0002] At present, variable frequency fans are often used to control the air volume in the field of solid heat storage products, and the output wind temperature is determined by the temperature in the heat storage body. Under non-direct heat output conditions, the temperature in the heat storage body gradually decreases with the heating time. And because the usual solid heat storage equipment does not have only one fan, the wind force also fluctuates within a small range when multiple air ducts are mixed for output. When we output the heat in the solid heat storage device to the user, we sometimes encounter situations where the heat quality and stability requirements are relatively high, which requires us to have a higher control over the temperature. However, existing solid heat storage products lack a system for constant temperature regulation. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that existing solid heat storage products lack a system for constant temperature control, and propose a constant temperature output system for high-temperature solid storage equipment.

[0004] A constant temperature output system for high-temperature solid storage equipment, characterized in that the system comprises a main fan, a low-temperature air duct, a mixed air duct, a high-temperature air duct, a mixed air fan, a solid storage equipment, a controller and a temperature sensor;

[0005] The incident gas enters the low-temperature air duct and the mixed air duct at the same time. The gas output from the low-temperature air duct enters the solid storage equipment for heating, and the heated gas is output. The main fan is set on the low-temperature air duct;

[0006] The gas output from the mixing air duct and the heated gas output from the solid storage device converge to form a mixed gas, which is output through the high-temperature air duct. The mixing air fan is arranged on the mixing air duct.

[0007] The temperature sensor is arranged on the high-temperature air duct to collect the temperature of the mixed gas and transmit it to the controller;

[0008] The controller is used to compare the temperature of the received mixed gas with the set temperature. If the temperature of the mixed gas is greater than the preset temperature, the frequency of the mixed air fan is increased and the frequency of the main fan is reduced. If the temperature of the mixed gas is less than the preset temperature, the frequency of the main fan is increased and the frequency of the mixed air fan is reduced.

[0009] Preferably, the system may further include a heat exchange device;

[0010] The heat exchange equipment is used to output the incident gas and also to receive the mixed gas output by the high-temperature air duct, process the mixed gas, and output liquid or steam.

[0011] Preferably, when the heat exchange device is a steam generating device, the steam generating device outputs steam.

[0012] Preferably, when the heat exchange device is an air-water heat exchanger, the air-water heat exchanger outputs liquid.

[0013] The beneficial effects of the present invention are:

[0014] The present invention uses a temperature sensor to collect the gas temperature output by the solid storage equipment. When the temperature is greater than the preset temperature, it is necessary to increase the frequency of the mixing fan and reduce the frequency of the main fan, so that more low-temperature gas can be mixed with the gas output by the solid storage equipment, so that the mixed temperature reaches the preset temperature without changing the air volume. When the temperature is lower than the preset temperature, it is necessary to increase the frequency of the main fan and reduce the frequency of the mixing fan, so that the solid storage equipment outputs more high-temperature gas, so that the mixed gas reaches the preset temperature without changing the air volume. Therefore, by adjusting the frequencies of the main fan and the mixing fan of the present invention, the output temperature eventually reaches the preset temperature, thereby achieving constant temperature output. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the principle of the constant temperature output system of the high-temperature solid storage equipment. DETAILED DESCRIPTION

[0016] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0017] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments may be combined with each other.

[0018] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but they are not intended to limit the present invention.

[0019] Example:

[0020] A constant temperature output system for high-temperature solid storage equipment, the system comprising a main fan 1, a low-temperature air duct 2, a mixing air duct 6, a high-temperature air duct 3, a mixing air fan 4, a solid storage equipment 5, a controller and a temperature sensor;

[0021] The incident gas enters the low-temperature air duct 2 and the mixing air duct 6 at the same time. The gas output from the low-temperature air duct 2 enters the solid storage device 5 for heating, and the heated gas is output. The main fan 1 is arranged on the low-temperature air duct 2;

[0022] The gas output from the mixing air duct 6 and the heated gas output from the solid storage device 5 converge to form a mixed gas, which is output through the high-temperature air duct 3. The mixing air fan 4 is arranged on the mixing air duct 6;

[0023] The temperature sensor is arranged on the high-temperature air duct 3 to collect the temperature of the mixed gas and transmit it to the controller;

[0024] The controller is used to compare the temperature of the received mixed gas with the set temperature. If the temperature of the mixed gas is greater than the preset temperature, the frequency of the mixed air fan 4 is increased and the frequency of the main fan 1 is reduced. If the temperature of the mixed gas is less than the preset temperature, the frequency of the main fan 1 is increased and the frequency of the mixed air fan 4 is reduced.

[0025] Specifically, a short-circuited mixed air bypass is set on the main air duct of the solid-state heat storage device. When the hot air temperature output from the main air duct is too high, low-temperature air is mixed into the high-temperature air output end to balance the high-temperature air temperature. By simultaneously controlling the main fan and the mixed air fan to adjust the temperature of the output air, the temperature range can be adjusted more accurately and finely.

[0026] By adjusting the frequency of the main fan and the mixed air fan, not only can constant temperature output be achieved, but the output air volume can also be adjusted.

[0027] Several different groups of PI parameters are preset in the controller. Through PID calculation, the frequency value of increasing the frequency of the mixing fan 4 and reducing the frequency of the main fan 1, or increasing the frequency of the main fan 1 and reducing the frequency of the mixing fan 4 is obtained according to the temperature difference between the temperature of the mixed gas and the preset temperature.

[0028] The structure of this embodiment is further limited: the system also includes a heat exchange device;

[0029] The heat exchange device is used to output the incident gas and also to receive the mixed gas output by the high-temperature air duct 3, process the mixed gas, and output liquid or steam.

[0030] The implementation method of the heat exchange device is further limited: when the heat exchange device is a steam generating device, the steam generating device outputs steam.

[0031] The implementation method of the heat exchange device is further limited: when the heat exchange device is an air-water heat exchanger, the air-water heat exchanger outputs liquid.

[0032] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments and that other arrangements may be devised without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the various dependent claims and features described herein may be combined in a manner different from that described in the original claims. It should also be understood that features described in conjunction with individual embodiments may be used in other described embodiments.

Claims

1. Constant temperature output system of high temperature solid storage equipment, characterized in that: The system comprises a main fan (1), a low-temperature air duct (2), a mixing air duct (6), a high-temperature air duct (3), an air mixing fan (4), a solid storage device (5), a controller and a temperature sensor; The incident gas enters the low-temperature air duct (2) and the mixing air duct (6) at the same time, the gas output from the low-temperature air duct (2) enters the solid storage device (5) for heating, and the heated gas is output, and the main fan (1) is arranged on the low-temperature air duct (2); The gas output from the mixing air duct (6) and the heated gas output from the solid storage device (5) converge to form a mixed gas, and the mixed gas is output through the high-temperature air duct (3). The mixing air fan (4) is arranged on the mixing air duct (6); The temperature sensor is arranged on the high-temperature air duct (3) and is used to collect the temperature of the mixed gas and transmit it to the controller; The controller is used to compare the temperature of the received mixed gas with the set temperature. If the temperature of the mixed gas is greater than the preset temperature, the frequency of the mixed air fan (4) is increased and the frequency of the main fan (1) is decreased. If the temperature of the mixed gas is less than the preset temperature, the frequency of the main fan (1) is increased and the frequency of the mixed air fan (4) is decreased.

2. The constant temperature output system of high temperature solid storage equipment according to claim 1, characterized in that: The system also includes a heat exchange device; The heat exchange device is used to output incident gas and is also used to receive the mixed gas output by the high-temperature air duct (3), process the mixed gas, and output liquid or steam.

3. The constant temperature output system of high temperature solid storage equipment according to claim 2, characterized in that: When the heat exchange device is a steam generating device, the steam generating device outputs steam.

4. The constant temperature output system of high temperature solid storage equipment according to claim 2, characterized in that: When the heat exchange device is an air-water heat exchanger, the air-water heat exchanger outputs liquid.

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