Hot water output control system for ultra-high temperature solid-state heat storage device

Abstract

The hot water output control system of an ultra-high temperature solid-state heat storage device relates to the field of solid-state heat storage. The existing problem of high difficulty in controlling the output temperature of an ultra-high temperature solid-state heat storage device is that the low-temperature wind output by the gas-water heat exchanger is divided into two paths. The first path enters the ultra-high temperature solid-state heat storage device through the main pipeline to be heated into high-temperature air; after the second path enters the mixed air pipeline, the gas output by the mixing fan on the mixed air pipeline converges with the high-temperature air output from the first main pipeline to form a mixed air gas, and then enters the inside of the gas-water heat exchanger through the hot air input pipeline to heat the liquid inside, and the heated liquid is output through the hot water output pipeline; the No. 1 temperature sensor is used to collect the temperature of the heated liquid in real time; the No. 2 temperature sensor collects the hot air temperature in real time; the controller determines whether to adjust the main fan frequency according to the temperature of the heated liquid; and is also used to determine whether to adjust the mixing fan frequency according to the hot air temperature. The present invention is used to control the output temperature of an ultra-high temperature solid-state heat storage device.

Description

Technical Field

[0001] The invention relates to the field of solid-state heat storage and a hot water output control system for an ultra-high temperature solid-state heat storage device. Background Art

[0002] In ultra-high temperature solid-state heat storage devices, since the temperature variation range of the output hot air is large and the highest hot air temperature reaches above 750°C, the material requirements for the back-end air-water heat exchanger are extremely high, resulting in increased costs. In addition, when the medium temperature changes in a large range, the service life of the air-water heat exchanger equipment will be reduced. At the same time, the medium flow rate needs to change significantly synchronously to ensure the stability of the system output enthalpy value. Therefore, the existing control of the output temperature of the ultra-high temperature solid-state heat storage device is difficult and it is not easy to maintain the stability of the output hot water temperature. Summary of the invention

[0003] The purpose of the present invention is to solve the problem that it is difficult to control the output temperature of the ultra-high temperature solid-state heat storage device and it is difficult to maintain the stability of the output hot water temperature, and propose a hot water output control system for the ultra-high temperature solid-state heat storage device.

[0004] The hot water output control system of the ultra-high temperature solid-state heat storage device is characterized in that the system includes a main fan, a mixing fan, an air mixing valve, a No. 1 temperature sensor, an air-water heat exchanger, a No. 2 temperature sensor, a main pipeline, an air mixing pipeline, a hot air output pipeline and a controller;

[0005] The low-temperature air output by the air-water heat exchanger is divided into two paths, wherein the first path enters the ultra-high temperature solid-state heat storage device through the main pipeline to be heated into high-temperature air. The main fan is set on the main pipeline;

[0006] After the second route enters the mixed air duct, the gas output by the mixer on the mixed air duct merges with the high-temperature air output from the first main duct to form a mixed gas, and then enters the air-water heat exchanger through the hot air output duct to heat the liquid inside the air-water heat exchanger. The heated liquid is output through the hot water output pipeline;

[0007] Temperature sensor No. 1 is installed on the hot water output pipeline of the air-water heat exchanger to collect the temperature of the heated liquid in real time and output it to the controller;

[0008] The second temperature sensor is set on the hot air output pipe to collect the hot air temperature in real time and output it to the controller;

[0009] The controller is used to detect whether the difference between the received heated liquid temperature and the set water temperature value exceeds the allowable value, if not, the main fan frequency is kept unchanged; if yes, the main fan frequency is adjusted;

[0010] It is also used to detect whether the difference between the received hot air temperature and the set temperature value exceeds the allowable value. If so, the frequency of the mixing fan is adjusted; if not, the frequency of the mixing fan is kept unchanged.

[0011] Preferably, the system further comprises a No. 1 pressure sensor and a main air valve;

[0012] The main air valve is arranged on the main pipeline between the main air fan and the ultra-high temperature solid-state heat storage device;

[0013] The No. 1 pressure sensor is arranged on the main pipeline at the outlet of the ultra-high temperature solid-state heat storage device and is used to collect the pressure of the main pipeline;

[0014] The controller is also used to detect whether the difference between the main pipeline pressure and the preset pressure value exceeds the allowable value. If so, the opening of the main air valve is adjusted; if not, the opening of the main air valve is kept unchanged.

[0015] Preferably, the system further comprises a No. 2 pressure sensor and an air mixing valve;

[0016] The air mixing valve and the second pressure sensor are both arranged at the outlet of the air mixing duct, and the air mixing valve is arranged between the air mixing fan and the second pressure sensor;

[0017] The controller is also used to detect whether the difference between the pressure of the air mixing duct and the preset pressure value exceeds the allowable value. If yes, the opening of the air mixing valve is adjusted; if no, the opening of the air mixing valve is kept unchanged. The beneficial effects of the present invention are:

[0018] The present invention utilizes a bypass air mixing structure, and sets a No. 1 temperature sensor on the main air duct to detect the temperature of hot water output by the solid-state heat storage device, and adjusts the output temperature by controlling the frequency of the main fan; and uses a No. 2 temperature sensor and a mixer to adjust the temperature of the hot air after confluence, thereby converting the ultra-high temperature hot air output by the solid-state heat storage device into low temperature hot air, effectively controlling the output temperature of the ultra-high temperature solid-state heat storage device, maintaining the stability of the output hot water temperature, reducing the requirements on the material of the air-water heat exchanger, and improving the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is the schematic diagram of the hot water output control system of the ultra-high temperature solid-state heat storage device;

[0020] Figure 2 This is the control flow chart of the hot water output control system of the ultra-high temperature solid-state heat storage device. DETAILED DESCRIPTION

[0021] 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.

[0022] 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.

[0023] 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.

[0024] Example:

[0025] A hot water output control system for an ultra-high temperature solid-state heat storage device, the system comprising a main fan 5, a mixing fan 6, an air mixing valve 7, a No. 1 temperature sensor 8, an air-water heat exchanger 9, a No. 2 temperature sensor 10, a main pipeline 11, an air mixing pipeline 12, a hot air output pipeline 13 and a controller;

[0026] The low-temperature air output by the air-water heat exchanger 9 is divided into two paths, wherein the first path enters the ultra-high temperature solid-state heat storage device 3 through the main pipeline 11 to be heated into high-temperature air, and the main fan 5 is arranged on the main pipeline 11;

[0027] After the second route enters the air mixing duct 12, the gas output by the air mixer 6 on the air mixing duct 12 merges with the high-temperature air output by the first route main duct 11 to form a mixed air gas, and then enters the air-water heat exchanger 9 through the hot air output duct 13 to heat the liquid inside the air-water heat exchanger 9, and the heated liquid is output through the hot water output pipeline;

[0028] The first temperature sensor 8 is arranged on the hot water output pipeline of the air-water heat exchanger 9, and is used to collect the temperature of the heated liquid in real time and output it to the controller;

[0029] The second temperature sensor 10 is arranged on the hot air output duct 13, and is used to collect the hot air temperature in real time and output it to the controller;

[0030] The controller is used to detect whether the difference between the received heated liquid temperature and the set water temperature value exceeds the allowable value, if not, the frequency of the main fan 5 is kept unchanged; if yes, the frequency of the main fan 5 is adjusted;

[0031] It is also used to detect whether the difference between the received hot air temperature and the set temperature value exceeds the allowable value. If yes, the frequency of the mixing fan 6 is adjusted; if not, the frequency of the mixing fan 6 is kept unchanged.

[0032] Specifically, the temperature sensor 8 and the main fan 5 are used to adjust the hot water temperature; the second temperature sensor 10 and the mixer 6 are used to adjust the hot air temperature, thereby effectively adjusting the output heat of the ultra-high temperature solid-state heat storage device 3.

[0033] The composition of the system is further defined as follows: the system further comprises a No. 1 pressure sensor 1 and a main air valve 4;

[0034] The main air valve 4 is arranged on the main pipeline 11 between the main air fan 5 and the ultra-high temperature solid-state heat storage device 3;

[0035] The first pressure sensor 1 is arranged on the main pipeline 11 at the outlet of the ultra-high temperature solid-state heat storage device 3, and is used to collect the pressure of the main pipeline;

[0036] The controller is also used to detect whether the difference between the main pipeline pressure and the preset pressure value exceeds the allowable value. If yes, the opening of the main air valve 4 is adjusted; if no, the opening of the main air valve 4 is kept unchanged.

[0037] Specifically, when the frequency of the main fan 5 is adjusted, the pressure of the main air duct will be affected. Therefore, the main air valve 4 and the first pressure sensor 1 need to be used to adjust the pressure of the main air duct to ensure that the pressure of the main air duct remains within a reasonable range.

[0038] The composition of the system is further defined as follows: the system further includes a second pressure sensor 2 and an air mixing valve 7;

[0039] The air mixing valve 7 and the second pressure sensor 2 are both arranged at the outlet of the air mixing duct 12, and the air mixing valve 7 is arranged between the air mixer 6 and the second pressure sensor 2;

[0040] The controller is also used to detect whether the difference between the air mixing duct pressure and the preset pressure value exceeds the allowable value. If yes, the opening of the air mixing valve 7 is adjusted; if not, the opening of the air mixing valve 7 is kept unchanged.

[0041] Specifically, when the frequency of the air mixer 6 is adjusted, the pressure of the air mixing duct will be affected. Therefore, the air mixing valve 7 and the second pressure sensor 2 are needed to adjust the pressure of the air mixing duct to ensure that the pressure of the air mixing duct remains within a reasonable range.

[0042] Working principle:

[0043] like Figure 2 As shown, when the No. 1 temperature sensor 8T2 detects that the output hot water temperature deviation exceeds the set value △T2, the frequency of the main fan 5 is adjusted to change the heat output by the ultra-high temperature solid-state heat storage device 3, thereby affecting the pressure of the main air duct and the temperature of the air after confluence. Otherwise, the frequency of the main fan 5 remains unchanged.

[0044] When the No. 1 pressure sensor 1P11 detects that the main air duct pressure deviation exceeds the set value △P1, the opening of the main air valve 4 is adjusted to ensure that the main air duct pressure remains within a reasonable range, otherwise the opening of the main air valve 4 remains unchanged.

[0045] When the second temperature sensor 10T1 detects that the temperature deviation of the hot air after confluence exceeds the set value △T1, the frequency of the mixing fan 6 is adjusted to ensure the air temperature after confluence, thereby affecting the pressure of the mixing duct, otherwise the frequency of the mixing fan 6 is kept unchanged.

[0046] When the No. 2 pressure sensor 2P2 detects that the pressure deviation of the mixed air duct exceeds the set value △P2, the opening of the mixed air valve 7 is adjusted to ensure that the pressure of the mixed air duct remains within a reasonable range, otherwise the opening of the mixed air valve 7 remains unchanged.

[0047] 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. Ultra-high temperature solid state heat storage device hot water output control system, characterized in that: The system comprises a main air fan (5), an air mixing fan (6), an air mixing valve (7), a first temperature sensor (8), an air-water heat exchanger (9), a second temperature sensor (10), a main pipeline (11), an air mixing pipeline (12), a hot air output pipeline (13) and a controller; The low-temperature air output by the air-water heat exchanger (9) is divided into two paths, wherein the first path enters the ultra-high temperature solid-state heat storage device (3) through the main pipeline (11) to be heated into high-temperature air, and the main fan (5) is arranged on the main pipeline (11); After the second route enters the air mixing duct (12), the gas outputted by the air mixer (6) on the air mixing duct (12) merges with the high-temperature air outputted by the first route main duct (11) to form a mixed gas, and then enters the interior of the air-water heat exchanger (9) through the hot air output duct (13), heats the liquid inside the air-water heat exchanger (9), and the heated liquid is outputted through the hot water output pipeline; The first temperature sensor (8) is arranged on the hot water output pipeline of the air-water heat exchanger (9) and is used to collect the temperature of the heated liquid in real time and output it to the controller; The second temperature sensor (10) is arranged on the hot air output pipe (13) and is used to collect the hot air temperature in real time and output it to the controller; The controller is used to detect whether the difference between the received heated liquid temperature and the set water temperature value exceeds the allowable value, and if not, keep the frequency of the main fan (5) unchanged; if yes, adjust the frequency of the main fan (5); It is also used to detect whether the difference between the received hot air temperature and the set temperature value exceeds the allowable value. If so, the frequency of the mixing fan (6) is adjusted; if not, the frequency of the mixing fan (6) is kept unchanged.

2. The hot water output control system of the ultra-high temperature solid state heat storage device according to claim 1, characterized in that: The system further comprises a No. 1 pressure sensor (1) and a main air valve (4); The main air valve (4) is arranged on the main pipeline (11) between the main air fan (5) and the ultra-high temperature solid-state heat storage device (3); A pressure sensor (1) is arranged on the main pipeline (11) at the outlet of the ultra-high temperature solid-state heat storage device (3) and is used to collect the pressure of the main pipeline; The controller is also used to detect whether the difference between the main pipeline pressure and the preset pressure value exceeds the allowable value. If so, the opening of the main air valve (4) is adjusted; if not, the opening of the main air valve (4) is kept unchanged.

3. The hot water output control system of the ultra-high temperature solid state heat storage device according to claim 1, characterized in that: The system further comprises a second pressure sensor (2) and an air mixing valve (7); The air mixing valve (7) and the second pressure sensor (2) are both arranged at the outlet of the air mixing duct (12), and the air mixing valve (7) is arranged between the air mixing fan (6) and the second pressure sensor (2); The controller is also used to detect whether the difference between the pressure of the air mixing duct and the preset pressure value exceeds the allowable value. If so, the opening of the air mixing valve (7) is adjusted; if not, the opening of the air mixing valve (7) is kept unchanged.

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