KR20200006160A - Cooler and engine testing apparatus having the same - Google Patents

Abstract

The present invention provides a cooling device and an engine test apparatus including the same. The cooling device comprises: a guide unit in which gas flows; a liquid supply unit arranged on the guide unit to supply liquid into the guide unit; a liquid column guide unit which is connected to the guide unit, and allows a column of the liquid to be arranged thereon; a liquid storage unit which is connected to the liquid column guide unit, and stores the liquid; a liquid circulation unit arranged on a flow path connecting the liquid storage unit and the liquid supply unit to supply the liquid of the liquid storage unit to the liquid supply unit; a water level sensing unit arranged on the liquid storage unit to measure the level of the liquid in the liquid storage unit; an external liquid supply unit arranged on the liquid storage unit to supply external liquid to the liquid storage unit based on a result measured by the water level sensing unit; and a filter unit arranged on the liquid circulation unit to remove foreign substances from the liquid supplied from the liquid storage unit to the liquid supply unit.

Description

Cooling apparatus and engine testing apparatus including same {Cooler and engine testing apparatus having the same}

The present invention relates to an apparatus, and more particularly, to a cooling apparatus and an engine test apparatus including the same.

Generally, chillers can be used in a variety of places and devices. For example, the chiller can cool the exhaust gas emitted from the engine in an engine tester that tests the engine. In addition, the cooling device can cool the gas or air supplied from an external device or a separate device.

Such a cooling device can take many forms. For example, the cooling device can supply moisture to gas or the like to cool the gas or the like. In another embodiment, the cooling apparatus may cool the gas by performing heat exchange with the gas passing through the heat exchanger. At this time, when cooling the gas and the like by supplying water directly to the gas in the cooling device, a pump may be used to discharge the water to the outside. In this case, however, the pump may cavitation if the chiller is used under low pressure. In addition, when the cooling device uses a heat exchanger, the heat exchanger may directly contact gas or the like, thereby damaging the heat exchanger, or soot in the heat exchanger may be adsorbed to the heat exchanger, thereby degrading the performance of the heat exchanger.

Embodiments of the present invention are to provide a cooling apparatus and an engine test apparatus including the same.

According to an aspect of the present invention, there is provided a guide part through which gas flows, a liquid supply part disposed in the guide part to supply a liquid into the guide part, and connected to the guide part, and a liquid main guide having a column of liquid disposed therein. And a liquid connected to the liquid main guide part and disposed on a flow path connecting the liquid storage part and the liquid supply part to store the liquid, and supplying the liquid to the liquid supply part. A liquid level sensing unit disposed in the circulation unit, the liquid storage unit to measure the level of the liquid inside the liquid storage unit, and the liquid storage based on the result measured by the liquid level sensing unit in the liquid storage unit Foreign liquid from the external liquid supply unit for supplying the external liquid to the liquid, and the liquid disposed in the liquid circulation portion supplied from the liquid storage unit to the liquid supply unit Filter can be provided with a cooling system including a to remove.

In addition, the liquid supply part may be provided in plurality, and the plurality of liquid supply parts may be disposed to be spaced apart from each other along the flow direction of the gas.

In addition, the cross-sectional area of the guide portion perpendicular to the flow direction of the gas on the basis of one point may vary from the upstream to the downstream direction based on the flow direction of the gas.

In addition, the guide unit may include a screen disposed downstream of the liquid supply unit with respect to the flow direction of the gas.

In addition, the pressure inside the guide portion may be lower than atmospheric pressure.

According to another aspect of the present invention, an engine test body, a guide part through which exhaust gas injected from the engine test body passes, a liquid supply part disposed in the guide part and supplying liquid into the guide part, and connected to the guide part The liquid column guide portion in which the pillar of the liquid is disposed, the liquid column guide portion connected to the liquid column guide portion, and a liquid storage portion in which the liquid is stored, and a flow path connecting the liquid storage portion and the liquid supply portion, A liquid circulation unit for supplying a liquid of a storage unit to the liquid supply unit, a water level sensing unit disposed in the liquid storage unit to measure the level of the liquid in the liquid storage unit, and a liquid level sensing unit disposed in the liquid storage unit An external liquid supply unit for supplying an external liquid to the liquid storage unit based on the result measured by the unit, and disposed in the liquid circulation unit It is possible to provide a test apparatus for engine comprising: a filter for removing foreign substances from the liquid supplied to the liquid supply from the unit.

In addition, the guide portion, the cross-sectional area of the guide portion perpendicular to the flow direction of the exhaust gas with respect to one point may vary from the upstream to the downstream direction based on the flow direction of the exhaust gas.

In addition, the guide unit may include a screen disposed downstream of the liquid supply unit with respect to the flow direction of the exhaust gas.

In addition, the pressure inside the guide portion may be lower than atmospheric pressure.

Still another aspect of the present invention is a guide, an engine test body disposed inside the housing, a guide part connected to the housing, through which exhaust gas injected from the engine test body passes, and disposed on the guide part. A liquid supply unit for supplying a liquid into the unit, a liquid guide unit connected to the guide unit and having a column of the liquid disposed therein, a liquid storage unit connected to the liquid main guide unit, and storing the liquid, A liquid level detector disposed in a storage unit for measuring the level of the liquid in the liquid storage unit, and external liquid is supplied to the liquid storage unit based on the result measured in the liquid level detector in the liquid storage unit An engine test apparatus including an external liquid supply unit may be provided.

1 is a conceptual diagram showing a cooling apparatus according to an embodiment of the present invention.
2 is a conceptual view showing an engine test apparatus including a cooling apparatus according to another embodiment of the present invention.

The invention will become apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but will be implemented in various forms, and only the present embodiments are intended to complete the disclosure of the present invention, and the general knowledge in the technical field to which the present invention belongs. It is provided to fully convey the scope of the invention to those skilled in the art, and the present invention is defined only by the scope of the claims. Meanwhile, the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. In this specification, the singular also includes the plural unless specifically stated otherwise in the phrase. As used herein, “comprises” and / or “comprising” refers to the presence of one or more other components, steps, operations and / or elements. Or does not exclude additions. Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are only used to distinguish one component from another.

1 is a conceptual diagram showing a cooling apparatus according to an embodiment of the present invention.

Referring to FIG. 1, the cooling device 100 includes a guide unit 110, a liquid supply unit 120, a liquid column guide unit 130, a liquid storage unit 140, a screen 150, and a liquid circulation unit 160. It may include a filter unit 170, the external liquid supply unit 191 and the cooling unit 192.

The guide part 110 may form a flow path through which gas passes. In this case, the guide unit 110 may have various forms. For example, the guide part 110 may be in the form of a pipe connected to an external device or an external device. In another embodiment, the guide unit 110 may include a flow path such as a building through which gas supplied from an external or external device is connected to the external or external device. In this case, the external device may be variously selected. For example, the external device may include an engine test specimen, semiconductor equipment, or the like.

The guide 110 as described above may have a cross-sectional area perpendicular to the flow direction of the gas from one point. For example, the cross-sectional area of the guide part 110 may be different from downstream of the liquid supply part 120 based on the flow direction of the gas. In this case, the cross-sectional area of the guide unit 110 may vary from the upstream to the downstream direction based on the flow direction of the gas. For example, the cross-sectional area of the guide part 110 may be constant from an inlet of the guide part 110 to a point. That is, the cross-sectional area of the guide part 110 may be constant up to one point at the inlet of the guide part 110 and then increase from one point to another point of the guide part 110. In addition, the cross-sectional area of the guide part 110 may decrease and become constant toward the downstream side based on the flow direction of the gas from another point of the guide part 110. In this case, since the space through which the gas passes in the portion where the cross-sectional area of the guide unit 110 increases, the liquid supplied from the liquid supply unit 120 may be easily collected.

The liquid supply unit 120 may supply a liquid to the guide unit 110. In this case, the liquid may be a material that is supplied into the guide unit 110 to cool the gas passing through the guide unit 110. For example, the liquid can be water.

The liquid supply unit 120 as described above may spray the liquid into the guide unit 110. In this case, the liquid supply unit 120 may include a nozzle for spraying the liquid. In particular, the liquid supply unit 120 may be in contact with the gas inside the guide unit 110 in a large area by supplying the liquid in the form of a mist.

The liquid column guide unit 130 may be connected to the guide unit 110. Liquid may be stored in the liquid guide unit 130. In addition, the liquid column guide unit 130 may provide a passage through which the liquid collected in the guide unit 110 or the liquid dropped to the bottom of the guide unit 110 moves. The liquid guide unit 130 as described above may be connected to the inside of the guide unit 110 and the liquid storage unit 140. In this case, the height of the liquid column accommodated in the liquid column guide unit 130 may be based on the pressure difference between the pressure of the surface of the liquid storage unit 140 and the inside of the guide unit 110.

The liquid storage unit 140 may be connected to the liquid column guide unit 130 to receive the liquid in the liquid column guide unit 130 or supply liquid to the liquid column guide unit 130. In this case, the liquid storage unit 140 may be partially exposed to the outside. In this case, the liquid storage unit 140 may be disposed in a different space from the guide unit 110, it may be in a state exposed to the atmosphere.

The screen 150 may be disposed in the guide part 110 to collect the liquid in the guide part 110. In this case, the screen 150 may be formed in a grid form. For example, the screen 150 may be formed in a mesh form. The screen 150 may be disposed to be close to the outlet side of the guide portion 110. For example, the screen 150 may be disposed downstream of the liquid supply unit 120 with respect to the flow direction of the gas. In this case, the screen 150 may collect and collect the liquid cooling the gas.

The liquid circulation unit 160 may supply the stored liquid of the liquid storage unit 140 to the liquid supply unit 120. In this case, the liquid circulation unit 160 may be disposed on a flow path through which the liquid moves from the liquid storage unit 140 to the liquid supply unit 120. In this case, the liquid circulation unit 160 may include a device capable of circulating the liquid, such as a pump.

The filter unit 170 may be disposed on a flow path moving from the liquid storage unit 140 to the liquid supply unit 120. At this time, the filter unit 170 may be disposed in the flow path to be separated from the flow path. The filter unit 170 may separate the foreign matter, etc. mixed in the liquid phase. In this case, the filter unit 170 may be formed in a mesh form. The filter unit 170 may be disposed between the liquid circulation unit 160 and the liquid storage unit 140.

The external liquid supply unit 191 may be connected to the liquid storage unit 140 to supply liquid to the liquid storage unit 140. At this time, the external liquid supply unit 191 may operate according to the result detected by the water level detection unit 180. The external liquid supply unit 191 may include a pipe in which the pump and the liquid moves.

The cooling unit 192 may cool the liquid moving from the liquid storage unit 140 to the liquid supply unit 120. In this case, the cooling unit 192 may be formed in various forms. For example, the cooling unit 192 may include a cooling tower. In another embodiment, the cooling unit 192 may include a heat exchanger. In another embodiment, the cooling unit 192 may include a cooling cycle. Hereinafter, for convenience of description, the cooling unit 192 will be described in detail with reference to a case including a cooling tower.

On the other hand, looking at the operation of the cooling device 100 as described above, when a high temperature gas is supplied from the external or external device, the high temperature gas is introduced into the inlet of the guide portion 110, the guide portion along the guide portion 110 110, it may move to the exit. At this time, various gases may move in the cooling device 100. For example, such a gas may be a refrigerant used in a cooling cycle. In this case, a compressor may be connected to the rear end of the cooling device 100. In another embodiment, such gas may be combustion gas generated from a gas turbine. Such a gas is not limited to the above, and may be a hot gas used in various industrial fields.

As described above, the liquid supply unit 120 may inject the fluid into the guide unit 110 while the gas moves along the guide unit 110. The injected fluid can lower the temperature of the gas while moving along the flow of the gas. In addition, the injected fluid may aggregate or move to the bottom of the guide part 110 due to the load. In addition, the injected fluid may move along the guide part 110. In this case, when the injected fluid reaches a section in which the internal space of the guide part 110 is extended, the fluid may be collected by decreasing the temperature.

When the gas moves along the guide unit 110 as described above, the internal pressure of the guide unit 110 may be lower than atmospheric pressure.

In such a case, the height of the liquid pillar in the liquid column guide unit 130 may vary according to the internal pressure of the guide unit 110. In this case, the height of the liquid air inside the liquid main guide unit 130 may correspond to a difference between the pressure inside the guide unit 110 and the atmospheric pressure.

The liquid injected into the guide unit 110 may move to the liquid column guide unit 130 through the guide unit 110 after the temperature of the gas is lowered. At this time, since the height of the liquid column is determined so as to correspond to the difference between the pressure inside the guide portion 110 and the atmospheric pressure as described above, the liquid guide member 130 when the liquid flows into the liquid guide guide 130 The height of the liquid column on the liquid column guide unit 130 may be kept constant by moving from the liquid column guide unit 130 to the liquid storage unit 140. That is, the liquid in the liquid guide unit 130 may move to the liquid storage unit 140 by the liquid newly introduced into the liquid guide unit 130.

The operation as described above may be continuously performed when gas is supplied to the guide unit 110. In this case, at least one liquid guide unit 130 may be provided, and at least one liquid guide unit 130 may be connected to the guide unit 110 and the liquid storage unit 140.

While the above process is in progress, the screen 150 may collect the fluid moving the guide unit 110. In this case, the fluid collected from the screen 150 may be collected and moved to the bottom surface of the guide part 110, and may be moved to the liquid column guide part 130 through the guide part 110.

During the process as described above, the liquid circulation unit 160 may move the liquid in the liquid storage unit 140 to the liquid supply unit 120. In this case, the liquid storage unit 140 may be provided with a separate water level detection unit 180. In this case, when the level of the liquid stored in the liquid storage unit 140 is less than or equal to the preset level based on the result detected by the water level detection unit 180, the liquid from the outside to the liquid storage unit 140 by the external liquid supply unit 191. Can be supplied.

When the liquid circulation unit 160 operates as described above, the filter unit 170 may remove foreign substances in the liquid. That is, when the gas passing through the inside of the guide unit 110 is a combustion gas discharged from an apparatus such as an internal combustion engine as described above, foreign substances such as soot are mixed in the gas and flow into the liquid storage unit 140 together with the fluid. Can be. In this case, when the liquid circulation unit 160 operates to flow the liquid, foreign matter in the liquid storage unit 140 may move to the liquid circulation unit 160 together with the liquid. In this case, the liquid circulation unit 160 may be broken or broken. However, as described above, the filter unit 170 may block foreign substances from being introduced into the liquid circulation unit 160 by removing foreign substances.

As described above, when the liquid circulation unit 160 operates to supply the liquid from the liquid storage unit 140 to the liquid supply unit 120, the cooling unit 192 may lower the temperature of the liquid. In this case, the liquid supplied to the liquid supply unit 120 by the liquid circulation unit 160 may maintain a temperature lower than the liquid temperature of the liquid storage unit 140.

Therefore, the cooling device 100 can cool the gas passing through the guide unit 110 through a simple structure, and can easily and quickly recover the liquid used for cooling the gas.

The cooling apparatus 100 may prevent breakage of a pump or the like generated when the liquid is recovered by recovering the liquid inside the guide part 110 without using a separate pump. In addition, the cooling apparatus 100 may effectively remove the liquid in the guide unit 110 even in an environment where the guide unit 110 is lower than atmospheric pressure.

2 is a conceptual view showing an engine test apparatus including a cooling apparatus according to another embodiment of the present invention.

Referring to FIG. 2, the engine test apparatus 10 may include an engine test body 1, a housing 5, and a cooling device 100. In this case, the engine test body 1 may include a jet engine. In this case, the engine test specimen 1 may be disposed inside the laboratory or outside the building and connected to the cooling apparatus 100.

The engine test body 1 as described above includes a compressor 2 for compressing the air introduced into the compressor, a combustor 3 and a combustor 3 generating a combustion gas by mixing the compressed air and fuel to combust the combustion. It may include a turbine (4) for generating power by gas. In this case, the compressor 2, the combustor 3, and the turbine 4 may be integrally formed with each other, and the rotating shaft of the compressor 2 and the rotating shaft of the turbine 4 may be connected to each other.

The housing 5 has a space formed therein, and the engine test body 1 may be disposed. At this time, the housing 5 may guide the external gas supplied to the engine test body 1 to the engine test body 1. In addition, the housing 5 may be connected to the cooling device 100 to supply external gas to the cooling device 100, and may be mixed with the combustion gas injected from the engine test body 1 to lower the temperature of the combustion gas. have.

The cooling device 100 includes a guide part 110, a liquid supply part 120, a liquid injection guide part 130, a liquid storage part 140, a liquid supply part 120, a screen 150, a liquid circulation part 160, and It may include a filter unit 170. At this time, the guide unit 110, the liquid supply unit 120, the liquid guide unit 130, the liquid storage unit 140, the screen 150, the liquid circulation unit 160 and the filter unit 170 in FIG. Since the description is the same as or similar to that described, a detailed description thereof will be omitted. In this case, the liquid guide unit 130 may be provided in plurality.

A separate exhaust compressor (not shown) may be connected to the rear end of the cooling device 100 as described above. At this time, the exhaust compressor is connected to the outlet of the guide unit 110 can not only discharge the gas inside the guide unit 110 to the outside but also the pressure inside the guide unit 110 and the housing 5 at atmospheric pressure It is also possible to keep it lower. In particular, the exhaust compressor is capable of realizing an environment such that the engine test body 1 is used in the high air by moving the gas inside the housing 5 to the guide part 110. That is, when the exhaust compressor is operated, the pressure inside the housing 5 may be lowered by moving the gas inside the housing 5 through the guide part 110.

On the other hand, looking at the operation of the engine test apparatus 10, after operating the engine test body 1, the state of the engine test body 1 can be measured through various sensors or the like according to the behavior of the engine test body (1). When the engine test specimen 1 is operated, the combustion gas passing through the turbine 4 may enter the guide unit 110. In this case, the guide unit 110 may be in the form of a pipe, or may be part of a building formed of cement or the like. In this case, the guide unit 110 may have a structure that completely blocks the outside air and the combustion gas.

Since the combustion gas moving along the guide part 110 is a high temperature, the liquid may be injected into the guide part 110 through the liquid supply part 120 to lower the temperature. The injected liquid may move to the liquid main guide part 130 after cooling the combustion gas inside the guide part 110. At this time, the height of the liquid column inside the liquid guide portion 130 is determined by the difference between the internal pressure of the guide portion 110 and the external air pressure of the liquid storage 140, so that the liquid is continuously in the liquid guide portion 130 Even if introduced, the height of the liquid pillar inside the liquid column guide unit 130 may be constant. In this case, the liquid previously stored in the liquid guide unit 130 may be supplied to the liquid storage unit 140 according to the liquid introduced into the liquid guide unit 130.

In this case, the liquid and the combustion gas moving along the guide part 110 may decrease in speed by increasing the internal area of the guide part 110. In this case, the liquid may be collected and may fall to the lower surface of the guide unit 110, and may enter the liquid main guide unit 130. In addition, the liquid moving along the guide unit 110 may collide with the screen 150 to be collected and move to the liquid column guide unit 130. At this time, the shape of the guide 110 may be formed so that the inlet of the liquid guide portion 130 is the lowest.

The liquid moved to the liquid storage unit 140 along the liquid main guide unit 130 as described above may move to the liquid supply unit 120 according to the operation of the liquid circulation unit 160. At this time, the inside of the liquid entering into the guide unit 110 may include soot contained in the combustion gas, the soot may be filtered by the filter unit 170 in accordance with the operation of the liquid circulation (160).

The filter unit 170 may be provided with a sensor (not shown) indicating the replacement time of the filter unit 170 by measuring the degree of soot adsorbed by the filter unit 170. For example, the sensor may measure the degree of soot adsorbed on the filter unit 170 by sensing the resistance of the filter unit 170.

Therefore, the engine test apparatus 10 can test the performance of the engine test body 1 in various environments of the engine test body 1. In addition, the engine test apparatus 10 may recycle the liquid required for cooling during the test. The engine test apparatus 10 can prevent a failure of a pump or the like generated when the liquid is circulated. The engine test apparatus 10 can continuously recover the liquid after cooling the combustion gas through a simple structure.

Although the present invention has been described in connection with the above-mentioned preferred embodiments, it is possible to make various modifications or variations without departing from the spirit and scope of the invention. Accordingly, the appended claims will include such modifications and variations as long as they fall within the spirit of the invention.

1: engine test body
2: compressor
3: combustor
4: turbine
10: engine testing apparatus
100: chiller
110: guide unit
120: liquid supply
130: liquid guide portion
140: liquid storage unit
150: screen
160: liquid circulation
170: filter unit
180: water level detector
190: sensor

Claims (10)

A guide portion through which gas flows;
A liquid supply part disposed in the guide part and supplying liquid into the guide part;
A liquid column guide part connected to the guide part and having a column of the liquid disposed therein;
A liquid storage unit connected to the liquid main guide unit and storing the liquid;
A liquid circulation part disposed on a flow path connecting the liquid storage part and the liquid supply part to supply the liquid of the liquid storage part to the liquid supply part;
A water level sensing unit disposed in the liquid storage unit to measure a level of the liquid in the liquid storage unit;
An external liquid supply unit disposed in the liquid storage unit and supplying an external liquid to the liquid storage unit based on a result measured by the water level sensing unit; And
And a filter unit disposed in the liquid circulation unit to remove foreign substances from the liquid supplied from the liquid storage unit to the liquid supply unit. The method of claim 1,
The liquid supply unit is provided in plurality,
The plurality of liquid supply unit is arranged to be spaced apart from each other along the flow direction of the gas. The method of claim 1,
The guide unit,
And a cross-sectional area of the guide portion perpendicular to the flow direction of the gas on the basis of one point varies from the upstream to the downstream side based on the flow direction of the gas. The method of claim 1,
And a screen disposed on the guide part and disposed downstream of the liquid supply part with respect to the flow direction of the gas. The method of claim 1,
The pressure inside the guide unit is lower than atmospheric pressure. Engine test body;
A guide part through which exhaust gas injected from the engine test body passes;
A liquid supply part disposed in the guide part and supplying a liquid into the guide part;
A liquid column guide part connected to the guide part and having a pillar of the liquid disposed therein;
A liquid storage unit connected to the liquid main guide unit and storing the liquid;
A liquid circulation part disposed on a flow path connecting the liquid storage part and the liquid supply part to supply the liquid of the liquid storage part to the liquid supply part;
A water level sensing unit disposed in the liquid storage unit to measure a level of the liquid in the liquid storage unit;
An external liquid supply unit disposed in the liquid storage unit and supplying an external liquid to the liquid storage unit based on a result measured by the water level sensing unit; And
And a filter unit disposed in the liquid circulation unit to remove foreign substances from the liquid supplied from the liquid storage unit to the liquid supply unit. The method of claim 6,
The guide unit,
An engine test apparatus in which the cross-sectional area of the guide part perpendicular to the flow direction of the exhaust gas is changed from the upstream to the downstream direction based on the flow direction of the exhaust gas based on one point. The method of claim 6,
And a screen disposed at the guide part and disposed at a downstream side of the liquid supply part with respect to a flow direction of the exhaust gas. The method of claim 6,
The pressure inside the guide unit is lower than atmospheric pressure engine test device. housing;
An engine test body disposed in the housing;
A guide part connected to the housing and through which exhaust gas injected from the engine test body passes;
A liquid supply part disposed in the guide part and supplying liquid into the guide part;
A liquid column guide part connected to the guide part and having a column of the liquid disposed therein;
A liquid storage unit connected to the liquid main guide unit and storing the liquid;
A water level sensing unit disposed in the liquid storage unit to measure a level of the liquid in the liquid storage unit; And
An external liquid supply unit disposed in the liquid storage unit and supplying an external liquid to the liquid storage unit based on a result measured by the water level sensing unit.

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