KR102114709B1 - Energy-saving smart freeze protection system - Google Patents

Abstract

The present invention relates to an energy-saving smart freeze protection system. The energy-saving smart freeze protection system compares a pipe temperature measurement value with a predetermined operating temperature set value for each heating wire circuit to control power to be supplied to a heating wire if the pipe temperature measurement value is below the operating temperature set value; calculates and sets the amount of power according to the length of a heating wire of each circuit and then measures the amount of power supplied for a certain period through monitoring of the amount of power; and repeats control to cut off the power supplied to the heating wire in order to prevent an accident caused by overload when reaching a power upper limit for the heating wire stored in a load DB, and to resupply the power to the heating wire when reaching a power lower limit for the heating wire stored in the load DB. Therefore, the energy-saving smart freeze protection system can perform real-time monitoring of power consumption as well as prevention of pipe freezing in winter, thereby maximizing energy-saving effects.

Description

Energy-saving smart freeze protection system {ENERGY-SAVING SMART FREEZE PROTECTION SYSTEM}

The present invention relates to an energy-saving smart freeze prevention system, which compares the temperature of the pipe or the outside temperature of the pipe and the temperature set for operation in order to prevent freezing of water-related pipes in winter, and whether power is supplied to the heating wire installed in the pipe By determining, it is possible to not only efficiently control energy consumption, but also to set a current load according to the length of the heating wire, and to an energy-saving smart freeze prevention system that can prevent a safety accident.

In general, in order to prevent freezing and freezing of building pipes in winter, a heating cable (carbon heating cable) that can generate a certain amount of heat is installed to smoothly supply water in the building, and prevent freezing and freezing of pipes in advance. have.

Conventional piping freeze prevention apparatus prevents freezing of piping by supplying power to the heating wire when the atmospheric temperature measured by the temperature sensor is below a certain temperature (eg, below zero). However, since such a conventional pipe freeze protection device actually determines the operation of the heating wire by measuring the ambient temperature outside the pipe, not the temperature of the pipe through which the water flows, the atmospheric temperature is minus zero, but the pipe remains on the heating wire even when it is not frozen. There is a problem in that unnecessary power is consumed because power is supplied.

In addition, the conventional pipe freeze protection device has a problem in that unnecessary power is continuously consumed even after the risk of freeze of the pipe disappears because the power supply to the heating wire is cut off only when the air temperature becomes higher than a certain temperature (for example, 15 ° C or more). , There is a problem that there is a risk of fire due to overheating because the heating wire continues to operate.

In order to solve the problems of the prior art, Patent Publication No. 10-2014-0049759 (freeze prevention heating wire control device) is installed on the outside of the pipe and a heating wire that generates heat when power is supplied, is installed on the outside of the pipe and A pipe temperature sensor unit measuring a pipe temperature of a pipe and outputting a pipe temperature measurement value, an external temperature sensor portion disposed at a distance from the pipe, and measuring an atmospheric temperature outside the pipe to output an external temperature measurement value and the pipe temperature A heating wire that receives the pipe temperature measurement value from a sensor unit and receives the external temperature measurement value from the external temperature sensor unit, and determines whether to supply power to the heating wire according to the pipe temperature measurement value and the external temperature measurement value. It characterized in that it comprises a control unit.

Patent Publication No. 10-2014-0049759 determines whether to supply power to the heating wire in consideration of the temperature of the piping itself and the temperature of the external atmosphere, but does not consider the load amount depending on the length of the heating wire, but only the temperature. Since there is a supply, there is a problem that a safety accident due to overload of the heating wire cannot be prevented.

Published Patent No. 10-2014-0049759 Registered Patent No. 10-1934726 Registered Patent No. 10-1479960

The present invention was invented to improve the above problems and compares the pipe temperature measurement value with a preset operating temperature set value for each heating line circuit so that power is supplied to the heating wire when the pipe temperature measurement value falls below the operating temperature set value. Control, measure the amount of power supplied to each heating wire for a certain period of time, cut off the power supplied to the heating wire when reaching the upper power limit value of the corresponding heating wire stored in the load DB, and cut off the power to the heating wire when the power lower limit of the heating wire stored in the load DB is reached. By repeatedly controlling the power to be supplied again, it is possible not only to prevent freezing of winter piping, but also to prevent overload of electric power to prevent safety accidents such as fire and electric shock, and to monitor daily, monthly, and accumulated energy usage. It is to provide an energy-saving smart freeze protection system that can be provided to users by comparing and analyzing energy consumption by year.

In order to achieve the above object, the present invention is installed on the outside of the pipe and a plurality of heating wires that generate heat when power is supplied; A pipe temperature sensor unit measuring the external temperature of the pipe and outputting a pipe temperature measurement value; A heating line load calculation unit that calculates an upper power limit value according to the construction length of each heating line by using a load per unit length of the heating line, calculates a value obtained by subtracting a predetermined value from the upper power limit value for each heating line, and stores it in the load DB; A heating wire control unit that controls the supply of power to the heating wire when the pipe temperature measurement value falls below a preset operating temperature set value by comparing the pipe temperature measurement value output by the pipe temperature sensor unit with a preset operating temperature set value for each heating wire; A current sensing sensor unit measuring the amount of power supplied to the heating wire by the heating wire controller; And measuring the amount of power supplied to each heating wire for a certain period of time through the current sensing sensor unit to cut off the power supplied to the heating wire when the power upper limit of the heating wire stored in the load DB is reached, and cut off the power of the heating wire stored in the load DB. And a peak control unit that repeatedly controls power to be supplied to the heating wire again when the lower power limit is reached.

Here, the heating line control unit is characterized in that the power supplied to the heating line is cut off when the measured value of the pipe temperature exceeds a set operating temperature within a predetermined time through repeated control of the peak control unit.

And the heating line control unit, if the pipe temperature measurement value does not reach the set operating temperature within a predetermined time through the repeat control of the peak control unit, the heating line load calculation unit adjusts the lower limit value of the corresponding heating line stored in the load DB, The peak control unit cuts off the power supplied to the heating line when the power upper limit of the heating line is reached, and controls the power to be supplied to the heating line again when the upper limit of the adjusted power of the heating line is reached. It is characterized in that the cycle is supplied faster.

In addition, it further includes an external temperature sensor unit that measures the outside temperature of the building and outputs an external temperature measurement value, and varies the degree of upward adjustment of the lower limit value according to a section of the external temperature measurement value output by the external temperature sensor unit. It is characterized by.

On the other hand, it further comprises a measurement value gradient calculation unit for calculating the slope value by grasping the trend of the change with respect to the pipe temperature measurement value, the heating line control unit, the pipe temperature measurement value within a predetermined time through repeated control of the peak control unit If the operating temperature does not reach the set value, and if the slope value calculated by the measured value slope calculation unit is greater than or equal to a predetermined value, the heating line load calculation unit maintains the lower limit value of the corresponding heating line stored in the load DB, and repeatedly controls the peak control unit. When the pipe temperature measurement value does not reach the set operating temperature within a predetermined time, and the slope value calculated by the slope calculation unit is less than a predetermined value, the heating line load calculation unit increases the lower limit value of the corresponding heating line stored in the load DB. It is characterized by adjusting.

And, further comprising an external temperature sensor unit for measuring the air temperature outside the building and outputting an external temperature measurement value, and differently adjusting the degree of upward adjustment of the lower limit value according to the section of the external temperature measurement value output by the external temperature sensor unit. , The larger the difference between the external temperature measurement value and the pipe temperature measurement value, the smaller the degree of upward adjustment of the lower limit value, and the smaller the difference, the greater the degree of upward adjustment of the lower limit value.

In addition, it further comprises a flow rate control unit for controlling the flow rate so that water flows inside the pipe, and characterized in that the degree of upward adjustment of the lower limit value according to the degree of the flow rate inside the pipe by the flow rate controller.

In addition, it further includes a vibration detection sensor unit for measuring the wavelength for vibrations generated during earthquakes and external shocks. The heating line control unit is characterized in that when the size of the wavelength measured by the vibration detection sensor unit exceeds a certain size, the power is cut to protect the heating line circuit.

According to the present invention having the above configuration, the following effects can be achieved.

First, compare the pipe temperature measurement value output by the pipe temperature sensor unit with a preset operating temperature setting value for each heating wire circuit, and control the power supply to the heating wire when the pipe temperature measurement value falls below the operating temperature set value to control the water supply in winter. It has the effect of preventing freezing.

One, by calculating the load amount according to the actual construction length of the heating wire for each circuit, and designating the upper and lower power limits, stop for a certain period of time when the specific circuit reaches the upper power limit and restart when the power lower limit is reached. It can be prevented.

However, it is possible to efficiently use energy by selecting and operating only heating wires that require power supply by applying a method of independently controlling for each heating wire circuit, not a method of collectively controlling the entire heating wire.

However, by controlling the flow rate of the flow rate, the power lower limit value of the heating line is elastically adjusted according to the degree of the flow rate, so that the cycle of stopping and restarting the heating line is not too fast, thereby preventing overload and efficiently consuming energy.

However, in the case of an earthquake or external shock, the enclosure of the control unit detects vibration and cuts off power to protect the heating circuit and prepare for secondary safety accidents. The electronic contactor (SSR), which is a characteristic of the heating wire control unit, can grasp an inoperable state and a replacement time due to aging, thereby increasing operator management efficiency.

One, the energy consumption of each circuit and the related operation monitoring and control data are recorded and stored in the corresponding display device, and the data is operated and energy usage history and trend of the facility in real time by operators connecting external devices (open communication protocol). Since it is possible to check the energy-saving driving function, it has a functional effect as a product optimized for resource saving.

1 is a block diagram of an energy-saving smart freeze protection system according to the present invention
2 is an operation flowchart of an energy-saving smart freeze protection system according to the present invention
3, when the power is cut off to the heating wire in the present invention and the supply is repeated, it is determined whether the pipe temperature measurement value exceeds the operation temperature set value within a predetermined time, and when the pipe temperature measurement value does not reach the operation temperature set value, the corresponding heating wire Flowchart when the power is cut off to the heating line by increasing the lower power limit of the power supply so that the cycle to be supplied becomes faster.
4, in the present invention, when the power is cut off to the heating wire and the supply is repeated, it is determined whether the pipe temperature measurement value exceeds the operation temperature set value within a predetermined time, and when the pipe temperature measurement value does not reach the operation temperature set value, the pipe temperature Flow chart when the power lower limit value of the heating wire is differently controlled according to whether the slope value representing the trend of the change to the measured value is greater than or equal to a predetermined value.
Figure 5 is an example of a graph showing how the power upper limit and the lower power limit are set differently for each heating line by calculating the load according to the actual construction length of the heating line for each circuit in the present invention.
6 is an example of a graph showing a control method for saving energy through an intermittent break after operation for a certain time in the present invention
7 is an example of a graph showing a method of sequentially operating from the lowest current temperature value when the temperature of the piping for each heating line circuit reaches a set value in the present invention
8 is an example of a graph for use in protecting a heating wire circuit through power cut according to the size of a corresponding wavelength by detecting vibration when an earthquake or external shock occurs in the present invention
9 is an example of setting the current energy consumption and the expected power consumption by circuit in the present invention, an example of screen display of the input / output instruction unit for predicting energy saving and safety accident of the heating wire
Figure 10 is an example of a flow chart to enable the analysis of energy consumption data in the present invention through the operation and energy use history and transition of the facility.

Advantages and features of the present invention, and methods for achieving them will be clarified with reference to embodiments described below in detail together with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various different forms.

In the present specification, this embodiment is provided to complete the disclosure of the present invention, and to fully inform the scope of the invention to those skilled in the art to which the present invention pertains.

And the present invention is only defined by the scope of the claims.

Thus, in some embodiments, well-known components, well-known operations, and well-known techniques are not specifically described in order to avoid obscuring the present invention.

In addition, the same reference numerals throughout the specification refer to the same components, and the terms used (referred to) in this specification are for describing the embodiments and are not intended to limit the present invention.

In the present specification, the singular form also includes the plural form unless specifically stated in the phrase, and the components and operations referred to as 'comprising (or, provided)' do not exclude the presence or addition of one or more other components and operations. .

Unless otherwise defined, all terms (including technical and scientific terms) used in the present specification may be used as meanings commonly understood by those skilled in the art to which the present invention pertains.

Also, terms that are defined in a commonly used dictionary are not ideally or excessively interpreted unless they are defined.

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 to 4, the energy-saving smart freeze protection system 100 calculates the input / output indicator 101, the heating wire 110, the pipe temperature sensor unit 120, the current sensing sensor unit 121, and the heating wire load. It includes a unit 130, a heating line control unit 140 and a peak control unit 150, the external temperature sensor unit 160, the measured value gradient calculation unit 170, the flow rate control unit 180 and the vibration detection sensor unit 190 It may further include.

The input / output instruction unit 101 sets the operating temperature for each heating line circuit, controls the flow rate so that water flows inside the pipe, monitors various other vibrations, loads, etc., and uses current energy consumption and heating line circuits. Make sure to check the expected power consumption.

The plurality of heating wires 110 is installed outside the pipe and generates heat when power is supplied. The heating wire 110 may be installed in a spiral shape outside the pipe while surrounding the pipe, and generate heat when power is supplied through the power supply line. Each heating wire is installed while wrapping the pipe in different lengths according to the construction length.

The heating wire 110 may be formed of a heating element such as a constant temperature electric wire (heating cable) that generates heat when power is supplied, and may be formed of various types of heating elements within a range known to those skilled in the art. As an example, when the pipe is a water pipe having a diameter of 15 mm, the heating wire 110 may consume 16 W of power per meter, and the heating wire 110 may consume 10 W of power (heat generation) depending on the pipe diameter and external environmental conditions. It can be changed to 24W.

The piping on which the heating wire 110 is installed may be connected to a meter or a boiler, and may be formed of a pipe (not shown) through which a fluid (for example, water) flows in an interior space, and a heat insulating material (not shown) surrounding the pipe. Since piping is widely known to those skilled in the art, detailed descriptions thereof are omitted here.

The pipe temperature sensor unit 120 measures the external temperature of the pipe and outputs a pipe temperature measurement value. It may be installed attached to the outside of the pipe or buried or adhered to a heat insulating material surrounding the outside of the pipe, and measure the pipe temperature of the pipe to output the pipe temperature measurement value to the heating wire control unit 140 through the connection line.

The heating wire load calculator 130 calculates an upper power limit value according to the construction length of each heating wire by using a load amount per unit length of the heating wire, and calculates a value obtained by subtracting a predetermined value from the power upper limit value for each heating wire as a power lower limit value to the load amount DB. Save ( S210 ).

Referring to FIG. 5, since the construction lengths of the heating wires for each circuit (1 circuit, 2 circuits, 3 circuits) are different, examples of different power upper limits are shown. The upper power limit may represent power consumption for 6 hours or 12 hours. As the construction length of the two circuits is the longest, the upper limit of power is set to the highest at about 4800kw, and the 4000kw minus 800kw from the upper limit of power is set to the lower limit of power. In one circuit, the upper limit of power is 3800kw, the lower limit of power is set to 3000kw, and in the third circuit, the upper limit of power is set to 4000kw and the lower limit of power is set to 3200kw. In this way, the upper and lower power limits according to the actual construction length for each circuit are calculated and stored in the load DB. When the upper limit of power is reached, the heating wire is turned off, and when it decreases to the lower power limit, the heating wire is turned on.

The heating wire control unit 140 compares the pipe temperature measurement value output by the pipe temperature sensor unit 120 with a preset operating temperature set value for each heating wire, and when the pipe temperature measurement value falls below the operating temperature set value, the heating wire 110 Control so that power is supplied ( S220 ).

Suppose that the heating temperature of the two circuits 110 is set to 2 ° C. If the pipe temperature measurement value of the heating circuit 110 of the two circuits is 0 ° C, power is supplied to the heating circuit 110 of the two circuits because the pipe temperature measurement value falls below the operating temperature set value. The heating line 110 of one circuit may have a set operating temperature of 2 ° C or 1 ° C. Each heating wire 110 can be independently set and controlled differently.

The current sensing sensor unit 121 measures the amount of power supplied to the heating line 110 by the heating line control unit 140.

The peak control unit 150 measures the amount of power supplied to each heating line 110 for a period of time through the current detection sensor unit 121 and reaches the heating line 110 when the power upper limit value of the corresponding heating line 110 stored in the load DB is reached. The power supplied is cut off, and when the power lower limit value of the corresponding heating wire 110 stored in the load DB is reached, it is repeatedly controlled so that power is supplied to the heating wire 110 again ( S230 ).

If power is continuously supplied to the corresponding heating wire by the heating wire control unit 140, there is a risk of fire due to overload. To prevent this, the peak control unit 150 measures the amount of power supplied to each heating line 110 for a certain period of time, cuts off the power supplied to the heating line 110 when the power upper limit value of the heating line 110 is reached, and cuts off the corresponding heating line By repeatedly controlling the power to be supplied to the heating wire 110 again when the power lower limit value of (110) is reached, the temperature of the pipe surrounding the heating wire is raised to prevent freezing and prevent overheating of the heating wire to prevent a safety accident. .

For example, when the amount of power supplied to two circuits was measured for 12 hours and the upper limit of power of 4 circuits reached 4800 kw, the power supplied to the heating wire was cut off. After that, if the amount of power supply decreases and decreases to the lower power limit of 4000kw, power is supplied to the heating wire again. In this way, power is supplied to the heating wire to cut off the power when the upper power limit is reached and repeatedly control so that power is supplied again when the power is reduced to the lower power limit.

Referring to FIG. 3, the heating wire control unit 140 determines whether the pipe temperature measurement value exceeds the operation temperature set value within a predetermined time through repeated control of the peak control unit 150 ( S310 ). When the temperature of the pipe rises through the power supply to the heating wire 110 and exceeds the set operating temperature, there is no fear of freezing, so there is no need to supply power anymore.

When the pipe temperature measurement value exceeds the operation temperature set value ( S320 ), the power supplied to the heating wire 110 is cut off ( S330 ). If the pipe temperature measurement exceeds the set operating temperature, it is out of danger of freezing, so the power is cut off.

However, the heating wire control unit 140, if the pipe temperature measurement value does not reach the set operating temperature within a predetermined time through repeated control of the peak control unit 150, the heating wire load calculation unit 130 of the corresponding heating wire stored in the load DB The lower power limit is adjusted upward ( S340 ). When the lower power limit is increased, the interval between the upper power limit and the lower power limit decreases, so that the cycle of supplying power again after turning off the power becomes faster. If the temperature of the pipe measured for a predetermined time is less than the set operating temperature, the speed of supplying power to prevent freezing of the pipe is made faster.

The peak control unit 150 cuts the power supplied to the heating line when the upper limit of the power of the corresponding heating line 110 is reached, and controls the power to be supplied to the heating line again when the upper limit of the adjusted heating power of the corresponding heating line is reached. It is blocked so that the supply cycle is faster ( S350 ).

The external temperature sensor unit 160 measures the atmospheric temperature outside the building and outputs an external temperature measurement value.

The degree of upward adjustment of the lower limit value varies according to a section of the external temperature measurement value output from the external temperature sensor unit 160. That is, the lower power limit value can be specifically calculated and adjusted according to the temperature state of the external atmosphere. When the temperature of the piping is low, but the temperature of the outside atmosphere is relatively high, the degree of lowering the power lower limit is lower than that of the case where the temperature of the piping is low and the temperature of the outside atmosphere is lower, thereby preventing overload and efficiently using energy. Can be.

The specific calculation method is as follows.

The larger the difference between the measured external temperature and the measured pipe temperature, the smaller the degree of upward adjustment of the lower limit, and the smaller the difference, the greater the upward adjustment of the lower limit.

The following power lower limit value is set independently for each heating wire.

Adjusted power lower limit value = lower power limit value + preset operating temperature set value / (external temperature measurement value-pipe temperature measurement value) × 100 -------- (Equation 1)

Equation 1 can be used to adjust the existing lower power limit.

For example, upper limit = 4800 kw, lower limit = 4000 kw

Preset operating temperature set value = 3 ℃

External temperature measurement = 5 ℃

Let's say the measured pipe temperature = 1 ° C.

Adjusted lower power limit = 4000 + 3 / (5-1) × 100 = 4000 + 0.75 × 100 = 4075

Adjusted lower power limit = 4075 kw

For example, upper limit = 4800 kw, lower limit = 4000 kw

Preset operating temperature set value = 2 ℃

External temperature measurement = 3 ℃

Let's say the measured pipe temperature = 0 ° C.

Adjusted lower power limit = 4000 + 2 / (3-0) × 100 = 4000 + 0.66 × 100 = 4066

Adjusted lower power limit = 4066 kw

For example, upper limit = 4800 kw, lower limit = 4000 kw

Preset operating temperature set value = 2 ℃

External temperature measurement = 2 ℃

Let's say the measured pipe temperature = 0 ° C.

Adjusted lower power limit = 4000 + 2 / (2-0) × 100 = 4000 + 1 × 100 = 4100

Adjusted lower power limit = 4100 kw

The lower power limit can be adjusted in the same manner as above, and the smaller the difference between the external temperature measurement and the pipe temperature measurement, the higher the power lower limit. When the difference between the external temperature and the pipe temperature is small, since the risk of freezing of the pipe becomes greater, the temperature of the pipe can be quickly increased by increasing the lower power limit and shortening the cycle in which the heating wire stops and operates. The smaller the difference between the upper power limit and the lower power limit, the shorter the period in which the heating wire stops / operates will be shorter.

The measured value slope calculation unit 170 calculates the slope value by grasping the trend of the change in the measured pipe temperature for each heating line.

Referring to FIG. 4, the heating wire control unit 140 determines whether the pipe temperature measurement value exceeds the operation temperature set value within a predetermined time through repeated control of the peak control unit 150 ( S410 ).

When the pipe temperature measurement value exceeds the operation temperature set value ( S420 ), the power supplied to the heating wire 110 is cut off ( S430 ).

However, the heating line control unit 140 does not reach the operating temperature set value within a predetermined time through repeated control of the peak control unit 150, and the slope value calculated by the measured value slope calculation unit 170 is predetermined. If the value is greater than or equal to ( S440 ), the heating line load calculation unit 130 maintains the lower power limit value of the corresponding heating line stored in the load amount DB ( S450 ).

For example, if the pipe temperature measurement value is 1 ℃ and the operation temperature set value is 3 ℃ through repeated control for 30 minutes, the pipe temperature measurement value is less than the operation temperature set value, but measured at regular time intervals. When the measured pipe temperature is -1.5 ℃, -1 ℃, -0.3 ℃, 0.3 ℃, 1 ℃, it corresponds to the case where the slope value is more than 1/2, so adjust the power lower limit value of the heating wire upward to supply power to the heating wire. Even if the supply and interruption repetition cycles are maintained for a short time, the pipe temperature rises soon enough to escape the risk of freezing, so if the slope value of the pipe temperature measurement is more than a predetermined value, the lower power limit value of the corresponding heating wire is maintained. Is to maintain.

However, through repeated control of the peak control unit 150, when the pipe temperature measurement value does not reach the operation temperature set value within a predetermined time, and the slope value calculated by the slope calculation unit 170 is less than the predetermined value, the heating wire load The calculator 130 adjusts the lower power limit value of the corresponding heating wire stored in the load amount DB ( S460 ). If the increase in piping temperature over time is too slow, it is necessary to increase the temperature of the piping by shortening the repetition cycle of supplying and stopping power to the heating wire by adjusting the lower power limit upward. This is because you can escape from the dangers of freezing.

For example, if the pipe temperature measurement value is 0 ℃ and the operation temperature set value is 3 ℃ through repeated control for 30 minutes, the pipe temperature measurement value is less than the operation temperature set value, and the pipe is measured at regular time intervals. If the measured temperature is observed as -1.5 ℃, -1.2 ℃, -0.8 ℃, -0.4 ℃, 0 ℃, it corresponds to the case where the slope value is less than 1/2, so adjust the power lower limit value of the heating wire upward to supply power to the heating wire. Shorten the cycle of supply and interruption and increase the temperature of the relevant pipes quickly to avoid the risk of freezing.

The degree of upward adjustment of the lower limit value varies according to the section of the external temperature measurement value output from the external temperature sensor unit 160, but the greater the difference between the external temperature measurement value and the pipe temperature measurement value, the smaller the degree of upward adjustment of the lower limit value. , The smaller the difference, the greater the degree to which the lower limit is adjusted upward. Since the detailed method has been described in detail using Equation 1 above, it will be omitted.

The flow control unit 180 controls the flow so that water flows using various controllers such as a pump inside the pipe. The flow control unit 180 may control the amount of water per hour passing through the inside of the pipe.

The degree of upward adjustment of the lower power limit is varied according to the degree of the flow rate flowing through the pipe by the flow rate control unit 180.

That is, when the pipe temperature measurement value does not reach the operation temperature set value within a predetermined time through repeated control of the peak control unit 150, and the slope value calculated by the slope calculation unit 170 is less than the predetermined value, the heating wire load The calculation unit 130 adjusts the power lower limit value of the corresponding heating wire stored in the load DB upward, and at this time, the flow control is also performed so that water flows inside the pipe, and the power lower limit value is adjusted stepwise according to the degree of the flow rate.

When the flow rate inside the pipe is low, the degree of increasing the lower power limit is increased to shorten the cycle of supplying and stopping power to the heating wire, and when the flow rate is high, the amount of increasing the lower power limit is reduced to supply power to the heating wire. And it is possible to prevent freezing by using energy efficiently by lengthening the stopping cycle.

For example, depending on the amount of water flowing inside the piping, divide it into 5 grades such as A, B, C, D, and E grades (the amount of water decreases from the A grade to the E grade), and raise the lower power limit. Suppose that you can adjust up to 5 levels (the degree of upward adjustment is smaller as you go from level 1 to level 5) depending on the adjusted value.

It is desirable not to exceed 50% of the difference between the upper limit of power and the lower limit of power even if the maximum adjustment is made to the first level. For example, if the upper power limit value is 4800 kw and the lower power limit value is 4000 kw, the difference between the upper limit value and the lower limit value is 800 kw, and it is preferable not to exceed 4000 + 800 * 1/2 = 4400 kw even if the lower limit value is adjusted upward as much as possible. When the lower limit of power is adjusted upward, it can be adjusted according to the class such as 1st class = 4400kw, 2nd class = 4320kw, 3rd class = 4240kw, 4th class = 4160kw, 5th class = 4080kw. Do not exceed 4400kw, which is 50% of the difference value of the lower power limit.

In the case of an E class in which the flow of the flow is not sensed inside the pipe, the increase value for upward adjustment of the lower power limit can be increased to a maximum of 1 level. Since the flow rate inside the pipe is not sensed, the lower limit of the power is supplied to the heating wire and the cycle of supplying power to the heating wire is shortened by increasing the maximum power limit to prevent freezing. However, if the amount of flow flowing through the pipe steadily flows over a certain amount in the B class, the increase value for upward adjustment of the lower power limit can be made as small as the 4th class. This is because if the water flows inside the piping for a certain level or more, the lower limit of the power can be reduced to about 4 grades to sufficiently prevent the freezing of the piping even if the period of supplying and stopping the power is allowed to some extent.

Referring to FIG. 6, the heating wire control unit 140 may supply power to the heating wire 110 in an intermittent driving method that repeats operation for a certain period of time and stops for a predetermined period of time regardless of the upper and lower power limits. If the intermittent operation control method is used, energy can be saved through an intermittent break after operation for a certain period of time.

Referring to FIG. 7, the heating wire control unit 140 sets each operating temperature set value for each heating wire circuit to prevent power loss due to an instantaneous initial overload. Use a sequential control method that sequentially operates by supplying power from the heating line with the lowest pipe temperature measurement.

Referring to FIG. 8, when the vibration detection sensor unit 190 detects vibration in the event of an earthquake or other external impact, and the size of the wavelength exceeds a certain size, the heating wire controller 140 cuts power to protect the heating wire circuit I also have In addition, by analyzing the operating characteristics of the heating wire control unit 140, it is possible to analyze the timing of replacement due to defective operation and aging when a wavelength larger than usual is detected.

Referring to FIG. 9, a screen of the input / output instruction unit 101 for checking and setting current power usage and expected power usage for each heating wire circuit is displayed, and the input / output instruction unit 101 can reduce energy of the heating wire and prevent safety accidents. have.

Referring to FIG. 10, when data is collected through various sensors used in the present invention and energy use target amounts are inputted, classification, storage, comparison, processing, and calculation are performed, and then various analysis is performed by applying the peak control and heating wire control algorithms described above. The results are presented graphically to the user. Through this, it is possible to analyze the operation and energy use history and trends of the freeze prevention equipment.

In addition, taking into account the characteristics of the heating wire, it checks the proper current according to the length of the heating wire and generates an overcurrent alarm to cut off the power and notifies the operator to take immediate action, monitor the energy consumption of each heating wire, collect uptime information, and Various management such as alarm history management can be performed.

The present invention has been described in detail with reference to preferred embodiments, but those skilled in the art to which the present invention pertains can describe the present invention in other specific forms without changing its technical spirit or essential features, as described above. It should be understood that the embodiments are illustrative in all respects and not restrictive.

In addition, the scope of the present invention is specified by the claims, which will be described later, rather than the detailed description, and all the changed or modified forms derived from the meaning and scope of the claims and their equivalent concepts are included in the scope of the present invention. It should be interpreted as.

100 ... Energy-saving smart freeze prevention system
101 ... I / O indicator
110 ... heating wire
120 ... Piping temperature sensor
121 ... current sensor
130 ... heating element load calculation unit
140 ... heating element control
150 ... peak control
160 ... outside temperature calculator
170 ... Measurement value slope calculation unit
180 ... flow control
190 ... vibration sensor

Claims (8)

A plurality of heating wires installed outside the pipe and generating heat when power is supplied;
A pipe temperature sensor unit measuring the external temperature of the pipe and outputting a pipe temperature measurement value;
A heating line load calculation unit that calculates an upper power limit value according to the construction length of each heating line by using a load per unit length of the heating line, calculates a value obtained by subtracting a predetermined value from the upper power limit value for each heating line, and stores it in the load DB;
A heating wire control unit that controls the supply of power to the heating wire when the pipe temperature measurement value falls below a preset operating temperature set value by comparing the pipe temperature measurement value output by the pipe temperature sensor unit with a preset operating temperature set value for each heating wire;
A current sensing sensor unit measuring the amount of power supplied to the heating wire by the heating wire controller; And
Measures the amount of power supplied to each heating wire for a certain period of time through the current sensing sensor unit, cuts off the power supplied to the heating wire when the power upper limit value of the heating wire stored in the load DB is reached, and cuts the power of the heating wire stored in the load DB When the lower limit value is reached, it includes a peak control unit that repeatedly controls so that power is supplied to the heating wire again,
The heating wire control unit,
When the pipe temperature measurement value exceeds the set operation temperature within a predetermined time through repeated control of the peak control unit, the power supplied to the heating wire is cut off,
The heating wire control unit,
When the pipe temperature measurement value does not reach the operation temperature set value within a predetermined time through repetitive control of the peak control unit, the heating line load calculation unit adjusts the power lower limit value of the corresponding heating line stored in the load amount DB upward,
The peak control unit cuts off the power supplied to the heating line when the power upper limit of the heating line is reached, and controls the power to be supplied to the heating line again when the upper limit of the adjusted power of the heating line is reached. Energy-saving smart freeze prevention system, characterized in that the cycle is supplied faster.
delete delete The method according to claim 1,
Further comprising an external temperature sensor for measuring the outside temperature of the building and outputting the measured outside temperature,
Energy-saving smart freeze prevention system, characterized in that the degree of upward adjustment of the lower limit according to the section of the external temperature measurement value output from the external temperature sensor.
A plurality of heating wires installed outside the pipe and generating heat when power is supplied;
A pipe temperature sensor unit measuring the external temperature of the pipe and outputting a pipe temperature measurement value;
A heating line load calculation unit that calculates an upper power limit value according to the construction length of each heating line by using a load per unit length of the heating line, calculates a value obtained by subtracting a predetermined value from the upper power limit value for each heating line, and stores it in the load DB;
A heating wire control unit that controls the supply of power to the heating wire when the pipe temperature measurement value falls below a preset operating temperature set value by comparing the pipe temperature measurement value output by the pipe temperature sensor unit with a preset operating temperature set value for each heating wire;
A current sensing sensor unit measuring the amount of power supplied to the heating wire by the heating wire controller;
Measures the amount of power supplied to each heating wire for a certain period of time through the current sensing sensor unit, cuts off the power supplied to the heating wire when the power upper limit value of the heating wire stored in the load DB is reached, and cuts the power of the heating wire stored in the load DB A peak control unit that repeatedly controls power to be supplied to the heating wire again when a lower limit value is reached; And
It includes a measured value slope calculation unit to calculate the slope value by grasping the trend of the change in the pipe temperature measurement value,
The heating wire control unit,
When the pipe temperature measurement value exceeds the set operation temperature within a predetermined time through repeated control of the peak control unit, the power supplied to the heating wire is cut off,
The heating wire control unit,
When the pipe temperature measurement value does not reach the operation temperature set value within a predetermined time through repeated control of the peak control unit, and the slope value calculated by the measured value slope calculation unit is greater than or equal to a predetermined value, the heating line load calculation unit is configured to load DB. Maintain the lower power limit value of the corresponding heating wire,
If the pipe temperature measurement value does not reach the operation temperature set value within a predetermined time through repeated control of the peak control unit, and the slope value calculated by the measurement value slope calculation unit is less than a predetermined value, the heating line load calculation unit loads the load DB. Energy-saving smart freeze prevention system, characterized in that the lower limit of the power of the corresponding heating wire is adjusted upward.
The method according to claim 5,
Further comprising an external temperature sensor for measuring the outside temperature of the building and outputting the measured outside temperature,
The degree of upward adjustment of the lower limit value varies according to the section of the external temperature measurement value output from the external temperature sensor unit, but as the difference between the external temperature measurement value and the pipe temperature measurement value increases, the degree of upward adjustment of the lower limit value decreases. Energy saving smart freezing protection system characterized in that the smaller the larger the degree of upward adjustment of the lower limit.
The method according to claim 5,
Further comprising a flow control unit for controlling the flow rate to flow water inside the pipe,
Energy-saving smart freeze prevention system, characterized in that the degree of upward adjustment of the lower limit value according to the degree of flow through the pipe by the flow control unit.
The method according to claim 1,
Further comprising a vibration detection sensor unit for measuring the wavelength of the vibration generated during the earthquake and external impact.
The heating line controller is an energy-saving smart freeze protection system characterized by protecting the heating line circuit by cutting off power when the size of the wavelength measured by the vibration sensor exceeds a predetermined size.

Images