Anti-icing natural gas electric heating remote controller based on high-precision temperature control

Abstract

The present invention belongs to the technical field of natural gas heaters, and specifically relates to an anti-ice-blockage natural gas electric heating remote controller based on high-precision temperature control, which includes a controller, a heating chamber and an intelligent temperature control system. The left side of the heating chamber is connected to an air outlet and a sewage outlet, and the right side of the heating chamber is connected to an exhaust port; a thermal resistor and a temperature fuse protector are provided inside the heating chamber, and the intelligent temperature control system is arranged inside the controller. The intelligent temperature control system includes a pressure identification module, a temperature control module, an alarm module and a fuse protection module. The pressure identification module is electrically connected to the temperature control module, the temperature control module is electrically connected to the controller, and the controller is electrically connected to the thermal resistor. The device solves the current problem that it is impossible to heat the reduced-pressure natural gas through high-precision temperature control, resulting in faults and ice blockage caused by excessively high or low natural gas heating temperature.

Description

Technical Field

[0001] The present invention belongs to the technical field of natural gas heaters, and in particular relates to an anti-icing and anti-blocking natural gas electric heating remote controller based on high-precision temperature control. Background Art

[0002] Natural gas absorbs a significant amount of heat energy when it is adjusted from high pressure to low pressure. Furthermore, the water content of natural gas causes a sudden drop in temperature after adjustment, often leading to ice blockage at the pressure regulator valve, rendering the regulator inoperable. Water bath or resistance heaters are commonly used to heat the natural gas before regulating the pressure. However, resistance heaters suffer from unstable heating temperatures, lack automatic temperature regulation, and suffer from poor temperature regulation accuracy, resulting in overheating or underheating, impacting the use of natural gas. This phenomenon has become a pressing issue for those skilled in the art. Summary of the Invention

[0003] The object of the present invention is to provide an anti-ice-blocking natural gas electric heating remote controller based on high-precision temperature control to solve the problems raised in the above background technology.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: an anti-ice blockage type natural gas electric heating remote controller based on high-precision temperature control, comprising a controller, a heating chamber and an intelligent temperature control system, the left side of the heating chamber is connected to an air outlet and a sewage outlet, and the right side of the heating chamber is connected to an exhaust port; a thermal resistor and a temperature fuse protector are arranged inside the heating chamber, and the intelligent temperature control system is arranged inside the controller, and the intelligent temperature control system includes a pressure identification module, a temperature control module, an alarm module and a fuse protection module, the pressure identification module is electrically connected to the temperature control module, the temperature control module is electrically connected to the controller, and the control The device is electrically connected to the thermal resistor, the alarm module is electrically connected to the temperature control module, the fuse protection module is electrically connected to the temperature control module, and the fuse protection module is electrically connected to the temperature fuse protector; the pressure identification module is used to identify the pressure during the natural gas decompression process, the temperature control module is used to drive the temperature of the controller to change according to the pressure after the natural gas is decompressed, and to remotely and manually adjust the temperature of the controller, the alarm module is used to send an alarm to the terminal according to the temperature of the controller and drive the temperature of the controller to decrease, and the fuse protection module is used to control the temperature fuse protector to automatically fuse when the heating temperature of the controller exceeds 120 degrees.

[0005] The present invention further describes that the pressure identification module includes a pressure unit, a flow rate unit and a reflux unit; the pressure unit is used to identify the pressure value of the natural gas after depressurization, the flow rate unit is used to measure the natural gas flow rate through the pressure value of the natural gas after depressurization, and the reflux unit is used to measure the number of refluxes of the natural gas in the heating chamber through the pressure value of the natural gas after depressurization.

[0006] The present invention further illustrates that the operation steps of the intelligent temperature control system include: step S1, natural gas pressure is reduced, the temperature is lowered, and the pressure identification module identifies the pressure during the natural gas pressure reduction process; step S2, then driving the temperature of the controller to change according to the pressure of the natural gas after pressure reduction, and at the same time, the flow rate of the natural gas after pressure reduction changes, thereby adjusting the temperature of the controller secondary through the change in flow rate, when the flow rate of the natural gas after pressure reduction is higher than the set value, entering step S3, otherwise entering step S4; step S3, measuring the number of natural gas refluxes in the heating chamber according to the flow rate of the natural gas after pressure reduction, thereby adjusting the temperature of the controller three times, and at the same time, adjusting the temperature of the controller four times according to the pressure of the natural gas after pressure reduction; step S4, the alarm module sends an alarm to the terminal according to the temperature of the controller, drives the temperature of the controller to decrease, and controls the temperature fuse protector to automatically blow when the heating temperature of the controller exceeds 120 degrees.

[0007] The present invention further illustrates that in step S1 and step S2, T1 is the initial temperature of the controller, T max is the maximum temperature of the controller, F is the pressure of natural gas after decompression, F min The lowest pressure of natural gas; that is, the lower the pressure of natural gas after decompression, the lower its temperature is, and the higher the initial temperature adjustment of the controller is.

[0008] The present invention further illustrates that in step S2, F max is the maximum pressure of natural gas, V is the flow rate of natural gas after pressure reduction when it enters the heating chamber, V max It is the fastest flow rate of natural gas when it enters the heating chamber, that is, the higher the pressure of natural gas after decompression, the faster the flow rate of natural gas when it enters the heater; Right now T2 is the temperature of the secondary adjustment controller, T 流 This is the effect of the flow rate of natural gas entering the heating chamber on the controller temperature. The faster the flow rate of natural gas entering the heating chamber, the higher the temperature increased by the controller. Finally, a secondary adjustment is made to the controller temperature.

[0009] The present invention further illustrates that in step S2 and step S3: when V>V1, V1 is the flow rate limit value of the natural gas after pressure reduction: T3=T1+T 流 -T 回 , T3 is the temperature of the controller adjusted three times, T 回 T1 is the temperature reduced by the controller when the natural gas flows back and forth in the heating chamber. maxIt is the highest temperature that the controller reduces when the natural gas flows back and forth in the heating chamber. That is, the faster the flow rate of the natural gas after decompression, the greater the impact force when entering the heating chamber, and the more times it flows back and forth, thus making the controller temperature after three adjustments lower. When V≤V1: then T3=T2.

[0010] The present invention further illustrates that in step S2 and step S3: when V>V1, and F>F1, F1 is the pressure limit value of the natural gas after decompression: T 回1 It is the temperature that the controller reduces when the pressure of the natural gas after decompression exceeds the limit value and the natural gas flows back and forth in the heating chamber; that is, at this time, the pressure of the natural gas after decompression is greater than the limit value, the speed of the natural gas entering the heating chamber is slow, and the natural gas around the thermal resistor is quickly replaced, which can relatively increase the temperature of the controller, that is, T4 = T1 + T 流 -T 回 +T 回1 , T4 is the temperature of the controller adjusted four times; when V≤V1: T4

[0011] =T2.

[0012] The present invention further illustrates that in step S4, the controller and the temperature fuse protector are controlled through alarm and fuse protection.

[0013] Compared with the existing technology, the present invention has the following advantages: the natural gas pressure reduction process is accompanied by a temperature reduction. The temperature reduction causes condensation, liquefaction, and freezing, which affects the performance of natural gas control equipment. By cooling the depressurized natural gas, ice blockage caused by a large pressure drop can be avoided, thereby preventing equipment operation from being unstable and avoiding natural gas transmission failures, thereby ensuring the safety of natural gas use.

[0014] Moreover, when natural gas enters the heating chamber, the natural gas flows at a high speed and cannot be quickly heated by the thermal resistor, thereby increasing the temperature of the controller. The faster the natural gas flows into the heating chamber, the more the temperature of the controller increases, so that the temperature generated by the thermal resistor controlled by the controller is higher. The temperature of the controller can be adjusted with high precision, thereby avoiding insufficient heating caused by excessive natural gas flow, and further improving the anti-icing effect.

[0015] When natural gas enters the heating chamber, due to the influence of flow rate, the natural gas enters the heating chamber and produces impact, flows back and forth in the heating chamber, and then flows back and forth around the thermal resistor. At this time, by lowering the temperature of the thermal resistor by the controller, the continuous high-intensity heating is avoided, thereby avoiding the natural gas being heated too high and affecting the use and safety of the natural gas. The faster the natural gas flow rate, the lower the temperature is. On the one hand, the heating temperature is guaranteed to avoid ice blockage. On the other hand, the safety of natural gas use is improved, and excessive heating temperature is avoided, which plays a protective role. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 is a circuit diagram of the present invention;

[0019] Figure 3 It is a schematic diagram of the module connection relationship of the intelligent temperature control system of the present invention. DETAILED DESCRIPTION

[0020] The following is a non-limiting detailed description of the technical solutions of the present invention in conjunction with preferred embodiments and the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0021] See also Figure 1-3 The present invention provides a technical solution: an anti-ice-blocking natural gas electric heating remote controller based on high-precision temperature control, comprising a controller, a heating chamber, and an intelligent temperature control system. The left side of the heating chamber is connected to an air outlet and a sewage outlet, and the right side of the heating chamber is connected to an exhaust port.

[0022] A thermal resistor and a temperature fuse protector are provided inside the heating chamber. The intelligent temperature control system is provided inside the controller. The intelligent temperature control system includes a pressure identification module, a temperature control module, an alarm module and a fuse protection module. The pressure identification module is electrically connected to the temperature control module, the temperature control module is electrically connected to the controller, the controller is electrically connected to the thermal resistor, the alarm module is electrically connected to the temperature control module, the fuse protection module is electrically connected to the temperature control module, and the fuse protection module is electrically connected to the temperature fuse protector;

[0023] The pressure identification module is used to identify the pressure during the natural gas decompression process. The temperature control module is used to drive the temperature of the controller to change according to the pressure after the natural gas is decompressed, and to remotely and manually adjust the temperature of the controller. The alarm module is used to send an alarm to the terminal based on the temperature of the controller and drive the controller temperature to decrease. The fuse protection module is used to control the temperature fuse protector to automatically fuse when the controller heating temperature exceeds 120 degrees.

[0024] The reduced-pressure natural gas enters the heating chamber through the outlet and is then discharged through the exhaust port. The sewage outlet is used to discharge impurities generated by the natural gas after cooling. The heating part is composed of an insulated thermal resistor with a power of 220V. The control part is composed of a digital temperature controller and a Pt100 thermal resistor. The on and off of the heating element is controlled according to the value of the thermal resistor. The heating temperature can be automatically controlled according to the pressure reduction value of the natural gas. When the temperature of the heating medium is too high or too low, an alarm signal can be issued. The signal can be sent to the terminal for alarm and interlock control of the controller. When the temperature in the heating chamber exceeds 120℃, the temperature fuse protector will automatically melt, thereby ensuring that the temperature in the heating chamber will not exceed 130℃.

[0025] The pressure identification module includes a pressure unit, a flow rate unit and a reflux unit;

[0026] The pressure unit is used to identify the pressure value of the natural gas after decompression, the flow rate unit is used to measure the natural gas flow rate through the pressure value of the natural gas after decompression, and the reflux unit is used to measure the number of refluxes of the natural gas in the heating chamber through the pressure value of the natural gas after decompression.

[0027] The operation steps of the intelligent temperature control system include:

[0028] Step S1: The natural gas is depressurized and the temperature is lowered, and the pressure identification module identifies the pressure of the natural gas during the depressurization process;

[0029] Step S2: The temperature of the controller is then driven to change according to the pressure of the natural gas after decompression. At the same time, the flow rate of the natural gas after decompression changes, thereby adjusting the temperature of the controller secondary through the change in flow rate. When the flow rate of the natural gas after decompression is higher than the set value, step S3 is entered; otherwise, step S4 is entered.

[0030] Step S3: measuring the number of refluxes of the natural gas in the heating chamber according to the flow rate of the natural gas after decompression, thereby adjusting the temperature of the controller three times, and adjusting the temperature of the controller four times according to the pressure of the natural gas after decompression;

[0031] Step S4: The alarm module sends an alarm to the terminal according to the temperature of the controller, drives the temperature of the controller to decrease, and controls the temperature fuse protector to automatically blow when the heating temperature of the controller exceeds 120 degrees.

[0032] In step S1 and step S2, T1 is the initial temperature of the controller, T max is the maximum temperature of the controller, F is the pressure of natural gas after decompression, F min is the minimum pressure of natural gas;

[0033] That is, the lower the pressure of natural gas after decompression, the lower its reduced temperature, and the higher the initial temperature adjustment of the controller;

[0034] The process of natural gas pressure reduction is accompanied by cooling. The temperature drop causes condensation, liquefaction and freezing, which affects the performance of natural gas control equipment. By cooling the natural gas after pressure reduction, ice blockage caused by a large pressure drop can be avoided, thereby preventing equipment operation from being unstable and avoiding natural gas transmission failures, thereby ensuring the safe use of natural gas.

[0035] In step S2, F max is the maximum pressure of natural gas, V is the flow rate of natural gas after pressure reduction when it enters the heating chamber, V max It is the fastest flow rate of natural gas when it enters the heating chamber, that is, the higher the pressure of natural gas after decompression, the faster the flow rate of natural gas when it enters the heater;

[0036] Right now T2 is the temperature of the secondary adjustment controller, T 流 The influence of the flow rate of natural gas entering the heating chamber on the temperature of the controller is as follows: the faster the flow rate of natural gas entering the heating chamber, the higher the temperature of the controller increases, and finally the temperature of the controller is adjusted twice;

[0037] When natural gas enters the heating chamber, the natural gas flows at a high speed and cannot be heated quickly by the thermal resistor, thereby increasing the temperature of the controller. The faster the natural gas flows into the heating chamber, the more the temperature of the controller increases, so that the temperature generated by the thermal resistor controlled by the controller is higher. The temperature of the controller can be adjusted with high precision, thereby avoiding insufficient heating caused by excessive natural gas flow rate and further improving the anti-icing effect.

[0038] In step S2 and step S3:

[0039] When V>V1, V1 is the flow rate limit value of natural gas after pressure reduction: T3=T1+T 流 -T 回 , T3 is the temperature of the controller adjusted three times, T 回 T1 is the temperature reduced by the controller when the natural gas flows back and forth in the heating chamber. maxIt is the maximum temperature that the controller reduces when the natural gas flows back and forth in the heating chamber;

[0040] That is, the faster the flow rate of natural gas after depressurization, the greater the impact force when entering the heating chamber, the more times of back and forth flow, and thus the lower the temperature of the controller after three adjustments;

[0041] When V≤V1: then T3=T2;

[0042] When natural gas enters the heating chamber, due to the influence of flow rate, the natural gas enters the heating chamber and produces impact, flows back and forth in the heating chamber, and then flows back and forth around the thermal resistor. At this time, by reducing the temperature of the thermal resistor by the controller, the continuous high-intensity heating is avoided, thereby avoiding the natural gas being heated too high and affecting the use and safety of the natural gas. The faster the natural gas flow rate, the lower the temperature is. On the one hand, the heating temperature is guaranteed to avoid ice blockage. On the other hand, the safety of natural gas use is improved, and excessive heating temperature is avoided, which plays a protective role.

[0043] In step S2 and step S3:

[0044] When V>V1 and F>F1, F1 is the pressure limit value of natural gas after decompression: T 回1 The temperature that the controller reduces when the natural gas flows back and forth in the heating chamber after the pressure of the natural gas exceeds the limit value after decompression;

[0045] That is, the pressure of the natural gas after decompression is greater than the limit value, the speed of the natural gas entering the heating chamber is slow, and the natural gas around the thermal resistor is quickly replaced, which can relatively increase the temperature of the controller, that is, T4=

[0046] T1+T 流 -T 回 +T 回1 , T4 is the temperature of the controller adjusted four times;

[0047] When V≤V1: T4=T2;

[0048] The pressure of natural gas after decompression is higher, so the speed of entering the heating chamber is accelerated, and the natural gas inside is discharged through the exhaust port at a lower speed. The frequency of the natural gas displaced around the thermal resistor is lowered, which can relatively reduce the heating temperature of the natural gas, thereby further ensuring the stability of the heating, avoiding excessive temperature drop and ice blockage again, and fully ensuring high-precision control of the heating temperature of the natural gas.

[0049] In step S4, the controller and the temperature fuse protector are controlled through alarm and fuse protection.

[0050] In the description of the present invention, it should be understood that the terms "up", "down", "front", "back", "left", "right", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0051] Finally, it should be noted that the above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the aforementioned embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An anti-icing and anti-blocking natural gas electric heating remote controller based on high-precision temperature control, including a controller, a heating chamber, and an intelligent temperature control system, characterized by: The left side of the heating chamber is connected to an air outlet and a sewage outlet, and the right side of the heating chamber is connected to an exhaust port; A thermal resistor and a temperature fuse protector are provided inside the heating chamber, and the intelligent temperature control system is provided inside the controller. The intelligent temperature control system includes a pressure identification module, a temperature control module, an alarm module and a fuse protection module. The pressure identification module is electrically connected to the temperature control module, the temperature control module is electrically connected to the controller, the controller is electrically connected to the thermal resistor, the alarm module is electrically connected to the temperature control module, the fuse protection module is electrically connected to the temperature control module, and the fuse protection module is electrically connected to the temperature fuse protector; The pressure identification module is used to identify the pressure during the natural gas decompression process. The temperature control module is used to drive the temperature of the controller to change according to the pressure after the natural gas is decompressed and to remotely and manually adjust the temperature of the controller. The alarm module is used to send an alarm to the terminal according to the temperature of the controller and drive the controller to reduce the temperature. The fuse protection module is used to control the temperature fuse protector to automatically fuse when the heating temperature of the controller exceeds 120 degrees. The pressure identification module includes a pressure unit, a flow rate unit, and a reflux unit. The pressure unit is used to identify the pressure value of the natural gas after decompression, the flow rate unit is used to measure the natural gas flow rate according to the pressure value of the natural gas after decompression, and the reflux unit is used to measure the number of refluxes of the natural gas in the heating chamber according to the pressure value of the natural gas after decompression.

2. The anti-icing and blocking natural gas electric heating remote controller based on high-precision temperature control according to claim 1 is characterized by: The operation steps of the intelligent temperature control system include: Step S1: The natural gas is depressurized and the temperature is lowered, and the pressure identification module identifies the pressure of the natural gas during the depressurization process; Step S2: The temperature of the controller is then driven to change according to the pressure of the natural gas after decompression. At the same time, the flow rate of the natural gas after decompression changes, thereby adjusting the temperature of the controller secondary through the change in flow rate. When the flow rate of the natural gas after decompression is higher than the set value, step S3 is entered; otherwise, step S4 is entered. Step S3: measuring the number of refluxes of the natural gas in the heating chamber according to the flow rate of the natural gas after decompression, thereby adjusting the temperature of the controller three times, and adjusting the temperature of the controller four times according to the pressure of the natural gas after decompression; Step S4: The alarm module sends an alarm to the terminal according to the temperature of the controller, drives the temperature of the controller to decrease, and controls the temperature fuse protector to automatically blow when the heating temperature of the controller exceeds 120 degrees.

3. The anti-icing and blocking natural gas electric heating remote controller based on high-precision temperature control according to claim 2 is characterized by: In the steps S1 and S2, , is the initial temperature of the controller, is the maximum temperature of the controller, is the pressure of natural gas after decompression, is the minimum pressure of natural gas; That is, the lower the pressure of the natural gas after decompression, the lower its temperature is reduced, and the higher the initial temperature adjustment of the controller is.

4. The anti-icing and blocking natural gas electric heating remote controller based on high-precision temperature control according to claim 3 is characterized by: In the step S2, , is the maximum pressure of natural gas, is the flow rate of the reduced-pressure natural gas entering the heating chamber, It is the fastest flow rate of natural gas when it enters the heating chamber, that is, the higher the pressure of natural gas after decompression, the faster the flow rate of natural gas when it enters the heater; ,Right now , is the temperature of the controller for secondary adjustment, This is the effect of the flow rate of natural gas entering the heating chamber on the controller temperature. The faster the flow rate of natural gas entering the heating chamber, the higher the temperature increased by the controller. Finally, a secondary adjustment is made to the controller temperature.

5. The anti-icing and blocking natural gas electric heating remote controller based on high-precision temperature control according to claim 4 is characterized in that: In the steps S2 and S3: when hour, The flow rate limit of natural gas after pressure reduction: , , The temperature of the controller is adjusted three times, The temperature that the controller reduces when the natural gas flows back and forth in the heating chamber. It is the maximum temperature that the controller reduces when the natural gas flows back and forth in the heating chamber; That is, the faster the flow rate of natural gas after depressurization, the greater the impact force when entering the heating chamber, the more times of back and forth flow, and thus the lower the temperature of the controller after three adjustments; when When: .

6. The anti-icing and blocking natural gas electric heating remote controller based on high-precision temperature control according to claim 5 is characterized by: In the steps S2 and S3: when ,and hour, The pressure limit value of natural gas after decompression: , The temperature that the controller reduces when the natural gas flows back and forth in the heating chamber after the pressure of the natural gas exceeds the limit value after decompression; That is, at this time, the pressure of the natural gas after decompression is greater than the limit value, the speed of the natural gas entering the heating chamber is slow, and the natural gas around the thermal resistor is quickly replaced, which can relatively increase the temperature of the controller. , The temperature of the controller is adjusted four times; when hour: .

7. The anti-icing and blocking natural gas electric heating remote controller based on high-precision temperature control according to claim 6 is characterized by: In step S4, the controller and the temperature fuse protector are controlled through alarm and fuse protection.

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