KR20210001331A - Heat exchanger complex environmental test system and its method - Google Patents

Abstract

A purpose of the present invention is to provide a heat exchanger complex environment testing system capable of applying a testing condition by reflecting an actual use condition of a heat exchanger, and testing the corrosion of the heat exchanger by simulating factors causing the corrosion of the heat exchanger, and a method thereof. To achieve the purpose, the heat exchanger complex environment testing system, which is a heat exchanger corrosion testing system, includes: a testing body in which a heat exchanger is installed, and having one openable side; a hot water inflow part formed inside or outside the testing body to lead hot water into an internal flow path formed on the heat exchanger; a solution injection part formed inside or outside the testing body to inject a corrosion solution to the outer surface of the heat exchanger; and a control part formed inside or outside the testing body to control the operation of the testing body, the hot water inflow part and the solution injection part, control the temperature or humidity of the inside of the testing body, control the temperature or flow velocity of the hot water, and control the temperature of the corrosion solution.

Description

Heat exchanger complex environmental test system and its method

The present invention relates to a heat exchanger complex environment test system and method thereof, and more particularly, to a heat exchanger complex environment test system and method that can be used for corrosion testing of a heat exchanger for a boiler or an industrial heat exchanger.

In general, a heat exchanger refers to a device that transfers heat from a high-temperature fluid to a low-temperature fluid through a heat transfer wall, and is used in a heater, a cooler, an evaporator, a condenser, and the like.

The heat exchanger must be designed to withstand the flow of fluid at high pressure and high temperature, and this is tested through a heat exchanger test system that tests the heat exchanger by simulating the actual environmental conditions of use, and the examples are as follows.

Referring to Korean Registered Patent Publication No. 10-1425407, as shown in FIG. 1, a conventional radiator thermal shock fatigue test apparatus includes a high-temperature tank 10 that supplies a high-temperature fluid for thermal expansion to the first radiator unit R1 to be tested. ), the first and second valves 20 and 30 respectively installed in the discharge pipe 11 and the recovery pipe 12 of the high temperature tank 10, and a low-temperature fluid for heat shrinkage to the second radiator unit R2 to be tested. The third and fourth valves (50, 60) and the first valve (20) respectively installed in the supplying low temperature tank 40, the discharge pipe 41 and the recovery pipe 42 of the low temperature tank 40 The first and second auxiliary devices are connected to the rear end of the valve 50, and the fourth valve 60 is connected to the front end of the second valve 30, respectively, so that the high-temperature fluid can flow to the second radiator unit R2 under test. Discharge pipes (70, 80) and the third valve (50) are connected to the rear end of the first valve (20), and the second valve (30) is connected to the front end of the fourth valve (60), respectively, so that the low temperature fluid is tested It is characterized by consisting of third and fourth auxiliary discharge pipes (90, 100a) that allow the flow to the first radiator unit (R1).

On the other hand, the conventional radiator thermal shock fatigue test device is characterized by supplying high temperature fluid and low temperature fluid to the radiator to perform a fatigue test of stress due to thermal expansion and heat contraction. Since it can be corroded by steam temperature and condensed water, a test system for predicting corrosion of a heat exchanger is required.

In addition, as a characteristic of the heat exchanger used in the condensing boiler, after the air heated by the burner is first exchanged in a sensible heat exchanger, the latent heat of the exhaust gas is utilized to increase energy efficiency. The efficiency of the boiler is increased by performing heat exchange in the latent heat exchange again. At this time, the condensed water containing an acid component outside the latent heat exchanger by the generated condensate causes corrosion while repeating the wet/dry state. A test device that can simulate and test these actual conditions of use is required.

Republic of Korea Patent Publication No. 10-1425407 (Registration date 2014.07.25.)

The present invention was conceived to solve the above problems, and a heat exchanger composite that tests the corrosion of the heat exchanger by applying the test conditions by reflecting the actual conditions of use of the heat exchanger and simulating the factors that cause corrosion of the heat exchanger. It is an object to provide an environmental test system and method thereof.

In the heat exchanger composite environment test system of the present invention, in the heat exchanger corrosion test system, a test body having a heat exchanger installed therein and capable of opening and closing on one side, an internal flow path formed inside or outside the test body, and formed in the heat exchanger A hot water inlet part for introducing hot water into the test body, a solution spraying part formed inside or outside the test body to spray a corrosion solution on the outer surface of the heat exchanger, and a solution spraying part formed inside or outside the test body, wherein the test body and the hot water flow And a control unit for controlling the operation of the part and the solution spraying unit, adjusting the temperature or humidity inside the test body, adjusting the temperature or flow rate of the hot water, and adjusting the temperature of the corrosion solution. I can.

Further, the hot water inlet unit connects a hot water tank in which the hot water is accommodated, a hot water temperature controller for adjusting a temperature of the hot water accommodated in the hot water tank, and an inlet end of the hot water tank and the internal flow path, It may be characterized in that it comprises a hot water inlet pipe in which the hot water transferred from the hot water tank to the internal flow path flows, and a hot water pump for adjusting the flow rate of the hot water is formed.

Further, the hot water inlet unit may further include a hot water recovery pipe connecting the hot water tank and a discharge end of the internal flow path, and flowing the hot water transferred from the internal flow path to the hot water tank. have.

Furthermore, the solution spraying unit includes a corrosion solution tank in which the corrosion solution is accommodated, a corrosion solution temperature control unit for adjusting the temperature of the hot water accommodated in the corrosion solution tank, and the inside of the corrosion solution tank and the test body. In the corrosion solution inlet pipe and the corrosion solution inlet pipe in which a corrosion solution pump that connects the inside, flows from the corrosion solution tank to the inside of the test body and controls the flow rate of the corrosion solution are formed. It may be characterized in that it comprises a nozzle portion for spraying the transferred corrosion solution to the outer surface of the heat exchanger.

Furthermore, the solution spraying unit further comprises a corrosion solution recovery pipe connecting the interior of the corrosion solution tank and the interior of the test body, and flowing the corrosion solution transferred from the test body to the corrosion solution tank therein. It can be characterized.

In addition, the heat exchanger complex environment test system of the present invention may be characterized in that it further comprises a heater unit for transferring hot air into the test body.

In addition, the heat exchanger complex environment test system of the present invention may be characterized in that it further comprises an air inlet part formed inside or outside the test body to introduce high-pressure air into the internal flow path under the control of the control unit. .

Furthermore, the test body may be characterized in that it further comprises a confirmation window through which the heat exchanger installed inside the test body can be viewed from the outside.

Furthermore, the test body may further include a temperature sensor for sensing a temperature inside the test body and a humidity sensor for sensing humidity inside the test body.

In the heat exchanger composite environment test method of the present invention, in the heat exchanger corrosion test method, a hot water inlet portion, which is controlled by a control unit, includes a hot water tank, a hot water temperature control unit, a hot water pump, and a hot water inlet pipe, in the test body A water inlet step of introducing water with a constant flow rate and temperature determined by the control unit into the inlet end of the internal flow path formed in the mounted heat exchanger, under the control of the control unit, and a corrosion solution tank, a corrosion solution temperature control unit, a corrosion solution pump, and corrosion A solution injection unit including a solution inlet pipe and a nozzle unit, a solution injection step of injecting a corrosion solution of a predetermined temperature determined by the control unit outside the heat exchanger, and a pressure sensor formed at the inlet and discharge ends of the internal flow path, the A pressure check step of detecting pressure at the inlet and discharge ends of the internal flow path and transmitting pressure information to the control unit, and corrosion of the internal flow path by comparing the pressure of water detected at the input and discharge ends of the internal flow channel by the control unit. It may be characterized in that it comprises a corrosion check step to confirm.

In addition, in the heat exchanger complex environment test method of the present invention, the control unit measures the pressure of water sensed at the inlet and outlet ends of each of the inner flow channels, and the pressure between the inlet and discharge ends of each of the internal flow channels is a difference by more than a certain range. May be characterized in that it further comprises a water circulation stop step of locking the valves formed at the inlet end and the discharge end of the inner flow path.

Further, the heat exchanger complex environmental test method of the present invention is formed in the first step of visual confirmation of filling the inside of the test body with water or a corrosion solution, and formed inside or outside the test body after the water circulation stop step. It may be characterized in that it further comprises a second step of visual confirmation of introducing high-pressure air into the internal flow path through the controlled air inlet.

Further, in the solution spraying step, when the measured humidity value of the humidity sensor installed inside the test body is detected below the operating humidity set by the control unit, the solution spraying unit is operated, and the measured humidity value of the humidity sensor is determined by the control unit. It may be characterized in that the solution spraying unit is stopped when it is detected above the stop humidity.

In addition, the heat exchanger complex environment test method of the present invention may be characterized in that it further comprises a step of drying the heat exchanger in which the heater controlled by the control unit introduces air of a predetermined temperature determined by the control unit into the test body. have.

Further, in the drying step of the heat exchanger, when the measured temperature value of the temperature sensor installed inside the test body is less than the operating temperature set by the control unit, the heater unit is operated, and the measured temperature value of the temperature sensor is determined by the control unit. It may be characterized in that the operation of the heater unit is stopped when it is sensed above the stop temperature.

In the heat exchanger complex environmental test system and method according to an embodiment of the present invention, the present invention can apply an accelerated corrosion test by simulating the actual environmental conditions of use for boilers and industrial heat exchangers, etc. Since the temperature and humidity, the temperature and flow rate of the hot water, and the temperature of the corrosion solution can be controlled, various test conditions can be applied.

1 is a circuit diagram of a conventional radiator thermal shock fatigue test apparatus
2 is a circuit diagram of a heat exchanger complex environment test system according to a first embodiment of the present invention
3 is a circuit diagram of a heat exchanger complex environment test system according to a second embodiment of the present invention
4 is a circuit diagram of a heat exchanger complex environment test system according to a third embodiment of the present invention
5 is a simplified perspective view of the heat exchanger complex environment test system of the present invention
6 is a flow chart of the heat exchanger complex environment test method of the present invention
7 is a flow chart of a solution spraying step according to an embodiment of the present invention
8 is a flow chart of a heat exchanger drying step according to an embodiment of the present invention

Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings. Prior to this, terms or words used in the specification and claims should not be construed as being limited to their usual or dictionary meanings, and the inventors appropriately explain the concept of terms in order to explain their own invention in the best way. Based on the principle that it can be defined, it should be interpreted as a meaning and concept consistent with the technical idea of the present invention.

Accordingly, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiment of the present invention, and do not represent all the technical spirit of the present invention, and thus various alternatives that can be substituted for them at the time of application It should be understood that there may be variations.

Hereinafter, the technical idea of the present invention will be described in more detail using the accompanying drawings. The accompanying drawings are only an example shown to describe the technical idea of the present invention in more detail, so the technical idea of the present invention is not limited to the form of the accompanying drawings.

2, in the heat exchanger complex environment test system 100 of the present invention, in the corrosion test system of the heat exchanger 110, a heat exchanger 110 is installed therein, and a test body 200 that can open and close one side is possible. ), a hot water inlet 300 formed inside or outside the test body 200 to introduce hot water into the inner flow path 120 formed in the heat exchanger 110, inside or outside the test body 200 Is formed, the solution spraying part 400 for spraying a corrosion solution on the outer surface of the heat exchanger 110 and the test body 200 inside or outside the test body 200, the hot water inlet 300 And a control unit 500 that controls the operation of the solution injection unit 400, adjusts the temperature or humidity inside the test body 200, adjusts the temperature or flow rate of the hot water, and adjusts the temperature of the corrosion solution. It characterized in that it comprises a ).

The test body 200 forms an accommodation space therein, and a plurality of the heat exchangers 110 may be installed. When a plurality of the heat exchangers 110 are installed in the test body 200, it is preferable that the plurality of heat exchangers 110 are installed in a fixed state that is spaced apart from each other at a predetermined interval.

In addition, one surface of the test body 200 may be opened in a connected state without being separated from the test body 200 or separated from the test body 200 and opened.

Inside the heat exchanger 110, the hot water delivered from the hot water inlet 300 controlled by the controller 500 to a certain temperature flows. The heat exchanger 110 may be mounted inside a vehicle or a boiler. The temperature and injection pressure of the hot water may be set differently by the controller 500 according to the environment to which the heat exchanger 110 is applied and the purpose of use.

The hot water inlet 300 is configured to store the hot water and deliver the hot water to the internal flow path 120 formed in the heat exchanger 110, and the heat exchanger 110 is the test body 200 ) In the case of a plurality of installed inside, the hot water inlet 300 is connected to each of the plurality of internal flow paths 120 formed in the plurality of heat exchangers 110, and the single hot water inlet 300 The hot water may be delivered to each of the inner flow paths 120.

The corrosion solution is a configuration in which the heat exchanger 110 replaces a corrosion-causing factor due to the temperature and condensate generated in actual use conditions, and the temperature of the spray solution is the environment to which the heat exchanger 110 is applied and the purpose of use. It may be set differently by the control unit 500 according to.

The solution injection unit 400 is configured to store the corrosion solution and inject the corrosion solution onto the outer surface of the heat exchanger 110 to generate corrosion outside the heat exchanger 110, and the heat exchanger 110 When a plurality of) are installed inside the test body 200, the solution spraying part 400 sprays the corrosion solution onto the surfaces of each of the plurality of heat exchangers 110.

The control unit 500 senses the temperature or humidity inside the test body 200 in order to maintain the temperature and humidity inside the test body 200 according to a preset test condition, and the test body 200 The temperature and humidity inside the test body 200 may be controlled by opening or by controlling the operation of the solution spraying unit 400.

The control unit 500 is connected to the DAQ 510 connected to the control unit 500, the temperature and humidity inside the test body 200, the pressure at the inlet and outlet ends of the heat exchanger 110, and the corrosion solution Save and record temperature information.

In addition, the controller 500 controls the hot water inlet unit 300 so that the hot water having a temperature and flow rate suitable for a preset test condition flows into the internal flow path 120 to adjust the temperature and flow rate of the hot water. I can. The control unit 500 may adjust the pressure applied to the inner flow path 120 by adjusting the flow rate of the hot water.

In addition, the control unit 500 controls the solution spraying unit 400 so that the corrosion solution having a temperature suitable for a preset test condition is sprayed onto the outer surface of the heat exchanger 110, thereby controlling the temperature of the corrosion solution. have.

Through the control unit 500, the heat exchanger complex environment test system 100 of the present invention can perform the corrosion test of the heat exchanger 110, even if the tester or operator does not protect the test space, through the control of each component. As the test proceeds, it is possible to automate the corrosion test.

Through the configuration of the test body 200, the hot water inlet 300, the solution injection unit 400, and the control unit 500, the present invention provides an actual environmental condition for boilers and industrial heat exchangers 110, etc. The accelerated corrosion test can be applied by simulating the test body 200, and the temperature and humidity inside the test body 200, the temperature and flow rate of the hot water, and the corrosion solution can control the temperature, so that various test conditions can be applied. It works.

In addition, the hot water inlet 300 of the present invention includes a hot water tank 310 in which the hot water is accommodated, a hot water temperature controller for adjusting the temperature of the hot water accommodated in the hot water tank 310, and the hot water. A hot water pump that connects the tank 310 with the inlet end of the internal flow path 120, and the hot water delivered from the hot water tank 310 to the internal flow path 120 flows therein, and controls the flow rate of the hot water. It may be characterized in that it comprises a hot water inlet pipe 320 is formed.

The hot water tank 310 is configured to store the hot water therein, and the hot water temperature control unit is configured to adjust the temperature of the hot water inside the hot water tank 310 under the control of the controller 500, the The hot water inlet pipe 320 is configured to deliver the hot water stored in the hot water tank 310 to the inlet end of the internal flow path 120.

The hot water tank 310 is sealed and stored by receiving water from the outside, and the hot water tank 310 has a sensor that detects the temperature of the water inside the hot water tank 310. The temperature is sensed and the sensed water temperature value is transmitted to the controller 500.

The hot water temperature controller may heat water in the hot water tank 310 under the control of the controller 500.

The hot water inlet pipe 320 preferably includes a valve, the hot water pump, and a pressure sensor, and the valve formed in the hot water inlet pipe 320 is controlled by the controller 500 to control opening and closing. Preferably, the hot water pump is also configured to control the flow rate of the hot water under the control of the controller 500, and the hot water pump is controlled to flow through the hot water inlet pipe 320 and the internal flow path 120. The flow rate of the hot water may be adjusted. The pressure sensor is formed at the input terminal of the internal flow path 120 connected to the hot water inlet pipe 320 and the discharge terminal of the internal flow path 120 to detect the pressure of the input terminal and discharge terminal of the internal flow path 120 It can, and transmits the sensed pressure of the input end and the discharge end of the internal flow path 120 to the control unit 500.

In addition, the hot water inlet unit 300 connects the hot water tank 310 and the discharge end of the internal flow path 120, and the hot water delivered from the internal flow path 120 to the hot water tank 310 therein. It may be characterized in that it further comprises a hot water recovery pipe 330 flowing.

Through the hot water recovery pipe 330, the hot water delivered to the hot water inlet 300 to the internal flow path 120 is not discarded and can be reused, so that the heat exchanger complex environment test system 100 of the present invention ) To reduce the operating cost and prevent water waste.

In addition, the solution spraying unit 400 of the present invention is a corrosion solution tank 410 in which the corrosion solution is accommodated, and a corrosion solution temperature control for adjusting the temperature of the hot water accommodated in the corrosion solution tank 410 Part, the inside of the corrosion solution tank 410 and the inside of the test body 200 are connected, and the corrosion solution transferred from the corrosion solution tank 410 to the inside of the test body 200 flows therein, and the A corrosion solution inlet pipe 420 in which a corrosion solution pump for controlling the flow rate of the corrosion solution is formed, and a nozzle part 430 for spraying the corrosion solution delivered from the corrosion solution inlet pipe 420 to the outer surface of the heat exchanger 110 It may be characterized by comprising a.

The corrosion solution tank 410 is configured to store the corrosion solution therein, and the corrosion solution temperature control unit adjusts the temperature of the corrosion solution inside the corrosion solution tank 410 under the control of the control unit 500 The corrosion solution inlet pipe 420 is configured to deliver the corrosion solution stored in the corrosion solution tank 410 to the nozzle part 430 formed inside the test body 200, and the The nozzle part 430 is configured to inject the corrosion solution delivered through the corrosion solution inlet pipe 420 onto the outer surface of the heat exchanger 110.

The corrosion solution tank 410 is sealed and receives and stores the corrosion solution from the outside, and the corrosion solution tank 410 has a sensor that detects the temperature of the corrosion solution inside the corrosion solution tank 410, the The temperature of the water inside the corrosion solution tank 410 is sensed, and the detected temperature value of the corrosion solution is transmitted to the control unit 500.

The corrosion solution temperature controller may heat the corrosion solution inside the corrosion solution tank 410 under the control of the controller 500.

The corrosion solution inlet pipe 420 preferably includes a valve and the corrosion solution pump, and the valve formed in the corrosion solution inlet pipe 420 is controlled by the control unit 500 to be opened and closed. It is preferable that the corrosion solution pump is controlled by the control unit 500 to adjust the flow rate of the corrosion solution, and the corrosion solution inlet pipe 420 and the nozzle unit are controlled by controlling the corrosion solution pump. The flow rate of the corrosion solution flowing through 430 may be adjusted.

The nozzle part 430 may be formed in any shape as long as it is a shape capable of spraying the corrosion solution on the outer surface of the heat exchanger 110, and a pipe formed corresponding to the location where the heat exchanger 110 is installed It is preferable that a hole of a certain size is formed and the corrosion solution is ejected at high pressure toward the heat exchanger 110.

In addition, the solution spraying unit 400 connects the inside of the corrosion solution tank 410 and the inside of the test body 200, and is transferred from the test body 200 to the corrosion solution tank 410 therein. It may be characterized in that it further comprises a corrosion solution recovery pipe 440 through which the corrosion solution flows.

Through the corrosion solution recovery pipe 440, the corrosion solution transferred from the solution spraying part 400 to the nozzle part 430 and sprayed on the heat exchanger 110 does not stay inside the test body 200. Without, it can be reused, there is an effect of reducing the operating cost of the heat exchanger complex environment test system 100 of the present invention and preventing waste of the corrosion solution.

Referring to FIG. 3, the heat exchanger complex environment test system 100 of the present invention may be characterized in that it further includes a heater part 600 for transferring hot air into the test body 200.

The heater part 600 has a configuration capable of controlling the temperature and humidity inside the test body 200 by transferring the high-temperature air into the test body 200, and the heater part 600 is the control unit ( It is desirable to operate under the control of 500).

The high-temperature air from the heater part 600 may be delivered into the test body 200 through a heater inlet pipe 610 connecting the heater part 600 and the test body 200 inside.

Through the heater unit 600, it is possible to adjust the humidity and temperature inside the test body 200, so that the accelerated corrosion test of the heat exchanger 110 in various external environments can be performed.

4 and 5, the heat exchanger complex environment test system 100 of the present invention is formed inside or outside the test body 200, and the internal flow path 120 is controlled by the control unit 500. It may be characterized in that it further comprises an air inlet 700 for introducing high-pressure air into the.

The air inlet 700 is preferably operated in a state in which the hot water inlet 300 is stopped, so that the hot water does not flow through the inner flow path 120, and is delivered to the internal flow path 120. The high-pressure air is preferably discharged through the inner flow path 120 to an air outlet formed inside or outside the test body 200.

The air inlet 700 is preferably operated in a state in which the heat exchanger 110 installed inside the test body 200 is immersed by the corrosion solution sprayed through the nozzle unit 430, and When a hole is generated in the internal flow path 120 by this, the high-pressure air delivered to the internal flow path 120 through the air inlet 700 generates bubbles, and the test operator There is an effect that the damage caused by corrosion can be checked with the naked eye.

In this case, the test body 200 may further include a confirmation window 210 through which the heat exchanger 110 installed inside the test body 200 can be viewed from the outside.

The confirmation window 210 is made of a transparent material such as glass, plastic, etc., and is preferably formed on at least one surface of the test body 200, and the heat exchanger 110 is the test body 200 When a plurality of interiors are installed, the number or size may be selected so that each of the heat exchangers 110 can be viewed from the outside.

Through the confirmation window 210, the test operator can visually check the damage of the inner flow path 120 while the test body 200 is not open, so that the test can be carried out more safely and conveniently. It works.

In addition, the test body 200 further comprises a temperature sensor 220 for sensing the temperature inside the test body 200 and a humidity sensor 230 for detecting the humidity inside the test body 200 It can be characterized.

The temperature sensor 220 is formed inside the test body 200, detects the temperature inside the test body 200, and transmits the detected temperature inside the test body 200 to the control unit 500 The humidity sensor 230 is formed inside the test body 200, detects the humidity inside the test body 200, and controls the detected humidity inside the test body 200 ( 500).

The control unit 500 accurately grasps the temperature and humidity inside the test body 200 through the temperature sensor 220 and the humidity sensor 230 formed inside the test body 200, and The operation of the inlet unit 300, the solution injection unit 400, the heater unit 600, and the air inlet unit 700 may be controlled.

6, in the heat exchanger complex environment test system 100 of the present invention, the corrosion test method of the heat exchanger 110 is controlled by the control unit 500 in the corrosion test method of the heat exchanger 110, and hot water A hot water inlet 300 including a tank 310, a hot water temperature controller, a hot water pump, and a hot water inlet pipe 320 is formed in the heat exchanger 110 mounted on the test body 200. A water introduction step (S100) of introducing water of a constant flow rate and temperature determined by the control unit 500 to the inlet end of), under the control of the control unit 500, a corrosion solution tank 410, a corrosion solution temperature control unit , A corrosion solution pump, a solution injection unit 400 comprising a corrosion solution inlet pipe 420 and a nozzle unit 430, a corrosion solution having a predetermined temperature determined by the control unit 500 outside the heat exchanger 110 In the solution spraying step (S200) of injecting, the pressure sensors formed at the inlet and outlet ends of the inner flow path 120 detect the pressure at the inlet and discharge ends of the inner flow path 120, and the controller 500 In the furnace, a pressure check step (S400) of transmitting pressure information and the control unit 500 compares the pressure of water detected at the input terminal and the discharge terminal of the internal flow path 120 to confirm corrosion of the internal flow path 120. It characterized in that it comprises a confirmation step (S500).

In the water inflow step (S100), the flow rate and temperature of the water can be changed according to the setting of the test operator, and the temperature of the water is controlled by the hot water temperature controller formed in the hot water inlet unit 300, and the hot water The flow rate of the water is adjusted by the hot water pump formed in the inlet part 300.

In the solution spraying step (S200), the temperature of the corrosion solution can be changed according to the setting of the test operator, and the temperature of the corrosion solution is controlled by the corrosion solution temperature control unit formed in the solution spraying unit 400 And, the solution spraying step (S200) may occur by repeating spraying and stopping spraying for a predetermined time.

In the pressure checking step (S400), the hot water pump is controlled by the control unit 500 at the inlet end of the internal flow path 120, and the pressure of the water flowing from the hot water inlet 300 to the internal flow path 120 This is measured, and the pressure of the water that has passed through the inner flow path 120 is measured at the discharge end of the internal flow path 120.

In the corrosion checking step (S500), the pressure measured at the inlet end of the inner flow path 120 is compared with the pressure measured at the discharge end of the inner flow path 120, and at the inlet end of the inner flow path 120 When the pressure measured at the discharge end of the internal flow path 120 is smaller than the measured pressure, it may be recognized that the internal flow path 120 is damaged due to corrosion.

In addition, in the heat exchanger complex environment test method of the present invention, the control unit 500 measures the pressure of water sensed at the inlet and discharge ends of each of the inner flow paths 120, and It may be characterized in that it further comprises a water circulation stop step (S600) of locking a valve formed at the inlet end and the discharge end of the inner flow path 120 in which the pressure at the discharge end is different by more than a certain range.

In the water circulation stopping step (S600), after a valve formed at the inlet end of the inner flow path 120 is closed, a valve formed at the discharge end of the inner flow path 120 is closed after a certain time, and the inner flow path 120 is closed. It is desirable to ensure that no water remains.

In addition, the heat exchanger complex environment test method of the present invention is after the water circulation stop step (S600), the inside of the test body 200 is filled with water or a corrosive solution, the first step (S700) and the test body 200 ) A second step (S710) of visual confirmation of introducing high-pressure air into the internal flow path 120 through the air inlet 700, which is formed inside or outside, and is controlled by the controller 500. You can do it.

The first step of visual confirmation (S700) fills the inside of the test body 200 with water or a corrosion solution, and at this time, connects the inside of the test body 200 with a tank in which external water or an external corrosion solution is stored. In addition, a tube that opens and closes under the control of the controller 500 may be formed. In addition, when the inside of the test body 200 is filled with a corrosion solution, the corrosion solution of the solution spraying part 400 may be transferred into the test body 200 through the nozzle part 430.

In the visual confirmation step 2 (S710), when high-pressure air is transmitted to the internal flow path 120 through the air inlet 700, air bubbles are generated in the portion damaged by corrosion in the internal flow path 120 Thus, damage due to corrosion of the internal flow path 120 can be confirmed through the naked eye.

Referring to FIG. 7, in the solution spraying step (S200), when the measured humidity value of the humidity sensor 230 installed in the test body 200 is less than the operating humidity set by the control unit 500, the solution spraying unit It may be characterized in that the solution spraying unit 400 is stopped when the 400 is operated and the measured humidity value of the humidity sensor 230 is detected to be higher than the stop humidity set by the control unit 500.

The operating humidity and the stationary humidity are humidity designated by a test operator to perform an accelerated corrosion test by simulating the actual environmental conditions of use of the heat exchanger 110.

The humidity sensor 230 installed inside the test body 200 measures the humidity inside the test body 200 and transmits the measured humidity value to the control unit 500, and the control unit 500 transmits the measured humidity value. (200) When the internal humidity value is greater than the operating humidity, the solution spraying unit 400 is not operated, and when the internal humidity value of the test body 200 is equal to or smaller than the operating humidity, the solution is Operate the master 400. Even when the solution spraying part 400 is operated, the humidity sensor 230 installed inside the test body 200 measures the humidity inside the test body 200 and transmits the measured humidity value to the control unit 500 And, when the humidity value inside the test body 200 is greater than or equal to the stop humidity, the control unit 500 stops the operation of the solution spraying unit 400.

6 and 8, in the heat exchanger complex environment test method of the present invention, the heater part 600 controlled by the control part 500 supplies air of a predetermined temperature determined by the control part 500 to the test body 200. ) It may be characterized in that it further comprises a drying step (S300) of the heat exchanger flowing into the interior.

The heat exchanger drying step (S300) may occur simultaneously with the solution spraying step (S200), and may occur after the solution spraying step (S200), and the heater part 600 controls the control of the controller 500. Accordingly, it may be operated to increase the temperature inside the test body 200 or to lower the humidity inside the test body 200.

At this time, in the heat exchanger drying step (S300), when the measured temperature value of the temperature sensor 220 installed in the test body 200 is less than the operating temperature set by the control unit 500, the heater unit 600 is It may be operated, and when the measured temperature value of the temperature sensor 220 is sensed above the stop temperature determined by the control unit 500, the operation of the heater unit 600 may be stopped.

The operating temperature and the stop temperature are temperatures designated by a test operator to perform an accelerated corrosion test by simulating the actual environmental conditions of use of the heat exchanger 110.

The temperature sensor 220 installed inside the test body 200 measures the temperature inside the test body 200 and transmits the measured temperature value to the control unit 500, and the test body (200) When the internal temperature value is greater than the operating temperature, the heater unit 600 is not operated, and when the internal temperature value of the test body 200 is equal to or smaller than the operating temperature, the heater unit ( 600). Even when the heater part 600 is operated, the temperature sensor 220 installed inside the test body 200 measures the internal temperature of the test body 200 and transmits the measured temperature value to the control unit 500. , When the temperature value inside the test body 200 is greater than or equal to the stop temperature in the control unit 500, the operation of the heater unit 600 is stopped.

The present invention is not limited to the above-described embodiments, and of course, various modifications can be made without departing from the gist of the present invention as claimed in the claims.

100: heat exchanger complex environment test system 110: heat exchanger
120: internal flow path
200: test body 210: confirmation window
220: temperature sensor 230: humidity sensor
300: hot water inlet 310: hot water tank
320: hot water inlet pipe 330: hot water recovery pipe
400: solution injection unit 410: corrosion solution tank
420: corrosion solution inlet pipe 430: nozzle part
440: corrosion solution recovery pipe
500: control unit 510: DAQ
600: heater unit 610: heater inlet pipe
700: air inlet 710: air inlet pipe
S100: water inflow step S200: solution spraying step
S300: heat exchanger drying step S400: pressure checking step
S500: Corrosion check step S600: Water circulation stop step
S700: Visual check step 1 S710: Visual check step 2

Claims (15)

In the heat exchanger corrosion test system,
A test body having a heat exchanger installed therein and capable of opening and closing one side;
A hot water inlet part formed inside or outside the test body to introduce hot water into an internal flow path formed in the heat exchanger;
A solution spraying unit formed inside or outside the test body and spraying a corrosion solution onto the outer surface of the heat exchanger; And
It is formed inside or outside the test body to control the operation of the test body, the hot water inlet and the solution injection part, adjust the temperature or humidity inside the test body, and adjust the temperature or flow rate of the hot water, A control unit for adjusting the temperature of the corrosion solution;
Heat exchanger complex environmental test system, characterized in that comprising a. The method of claim 1, wherein the hot water inlet,
A hot water tank in which the hot water is accommodated;
A hot water temperature controller for adjusting the temperature of the hot water accommodated in the hot water tank; And
A hot water inlet pipe that connects the hot water tank to an inlet end of the internal flow path, and has a hot water pump formed therein, through which the hot water transferred from the hot water tank to the internal flow path flows, and controls a flow rate of the hot water;
Heat exchanger complex environmental test system, characterized in that comprising a. The method of claim 2, wherein the hot water inlet,
A hot water recovery pipe connecting the hot water tank and the discharge end of the internal flow path, and flowing the hot water transferred from the internal flow path to the hot water tank therein;
Heat exchanger complex environment test system, characterized in that it further comprises a. The method of claim 1, wherein the solution spraying unit,
A corrosion solution tank in which the corrosion solution is accommodated;
A corrosion solution temperature controller for adjusting the temperature of the hot water accommodated in the corrosion solution tank;
Corrosion in which a corrosion solution pump is formed that connects the inside of the corrosion solution tank and the inside of the test body, the corrosion solution transferred from the corrosion solution tank to the inside of the test body flows therein, and controls the flow rate of the corrosion solution Solution inlet pipe; And
A nozzle part for spraying the corrosion solution delivered from the corrosion solution inlet pipe onto the outer surface of the heat exchanger;
Heat exchanger complex environmental test system, characterized in that comprising a. The method of claim 4, wherein the solution spraying unit,
A corrosion solution recovery pipe that connects the inside of the corrosion solution tank and the inside of the test body, and flows the corrosion solution transferred from the test body to the corrosion solution tank therein;
Heat exchanger complex environment test system, characterized in that it further comprises a. The method of claim 1,
A heater part for transferring hot air into the test body;
Heat exchanger complex environment test system, characterized in that it further comprises a. The method of claim 1,
An air inlet part formed inside or outside the test body to introduce high-pressure air into the internal flow path under the control of the controller;
Heat exchanger complex environment test system, characterized in that it further comprises a. The method of claim 7, wherein the test body,
A confirmation window through which the heat exchanger installed inside the test body can be viewed from the outside;
Heat exchanger complex environment test system, characterized in that it further comprises a. The method of claim 1, wherein the test body,
A temperature sensor sensing the temperature inside the test body; And
A humidity sensor for sensing humidity inside the test body;
Heat exchanger complex environment test system, characterized in that it further comprises a. In the heat exchanger corrosion test method,
Under the control of the control unit, a hot water inlet including a hot water tank, a hot water temperature control unit, a hot water pump, and a hot water inlet pipe is at the inlet end of an internal flow path formed in a heat exchanger mounted on the test body at a constant flow rate and temperature determined by the control unit. A water introduction step of introducing water of the
Under the control of the control unit, a solution injection unit including a corrosion solution tank, a corrosion solution temperature control unit, a corrosion solution pump, a corrosion solution inlet pipe, and a nozzle unit provides a corrosion solution having a constant temperature determined by the control unit outside the heat exchanger. Spraying the solution spraying step;
A pressure checking step in which pressure sensors formed at the inlet and outlet ends of the internal flow path sense pressures at the inlet and discharge ends of the internal flow path and transmit pressure information to the control unit; And
A corrosion checking step of confirming corrosion of the internal flow path by comparing the pressure of water detected at the input terminal and the discharge terminal of the internal flow path by the control unit;
Heat exchanger complex environment test method comprising a. The method of claim 10,
The control unit measures the pressure of water sensed at the inlet and discharge ends of each of the inner flow paths, and is formed at the inlet and discharge ends of the internal flow paths where the pressures at the inlet and discharge ends of each of the internal flow paths differ by more than a certain range. Water circulation stop step of closing the valve;
Heat exchanger composite environment test method, characterized in that it further comprises a. The method of claim 11,
After the water circulation stop step, a first step of visual confirmation of filling the inside of the test body with water or a corrosion solution; And
A second step of visual confirmation of introducing high-pressure air into an internal flow path through an air inlet part controlled by the control unit and formed inside or outside the test body;
Heat exchanger complex environment test method, characterized in that it further comprises. The method of claim 10, wherein the spraying of the solution comprises:
When the measured humidity value of the humidity sensor installed inside the test body is detected below the operating humidity set by the control unit, the solution spraying unit is operated, and when the measured humidity value of the humidity sensor is detected above the stop humidity set by the control unit, the solution Heat exchanger complex environment test method, characterized in that stopping the injection unit. The method of claim 10,
A heat exchanger drying step in which a heater controlled by the control unit introduces air of a predetermined temperature determined by the control unit into the test body;
Heat exchanger composite environment test method, characterized in that it further comprises a. The method of claim 14, wherein the drying of the heat exchanger comprises:
When the measured temperature value of the temperature sensor installed inside the test body is detected below the operating temperature set by the control unit, the heater unit is operated, and when the measured temperature value of the temperature sensor is detected above the stop temperature set by the control unit, the heater unit Heat exchanger complex environment test method, characterized in that stopping the operation.

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