JP2002116116A - High temperature-high pressure testing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a high temperature-high pressure testing device capable of evaluating and confirming the quality, performance and corrosion resistance of a device and parts at a temperature and under a pressure of a portion where the device and the parts are actually attached in of the device and the parts on which high temperature gas and high temperature compressed gas act, capable of reducing the size and the cost and causing no environmental problem. SOLUTION: This high temperature-high pressure testing device is provided with an opening-closing valve for introducing compressed air from a compressed air supply device to a sample by heating the compressed air by the high temperature gas from a high temperature gas generator, introducing the high temperature gas from the high temperature gas generator to the sample and introducing one to the sample by selectively switching the compressed air and the high temperature gas.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an exhaust system and parts mounted on an exhaust pipe of an engine of an automobile or the like, or a device or part to which combustion gas of a combustion device acts, where high-temperature gas or high-temperature compressed air acts. Test equipment for conducting research and testing on equipment and components to be tested, especially at high temperatures to evaluate and confirm the quality, performance, corrosion resistance, etc. of the equipment and components at the temperature and pressure of the site where the equipment and components are actually mounted It relates to a high-pressure test device.

[0002]

2. Description of the Related Art Conventionally, as a device or a part to which high-temperature gas or high-temperature compressed air acts, for example, an exhaust pipe valve device for an exhaust brake for closing an exhaust pipe of an engine of an automobile or the like and increasing the exhaust gas pressure of the engine is known. is there. Under the conditions corresponding to the actual state of the inside of the exhaust pipe, the exhaust pipe valve device is operated under the temperature (850 ° C.-atmospheric temperature) and the pressure (7.0 kg / c).
When the quality, performance, corrosion resistance, etc. are evaluated / confirmed under the condition that (m2 to atmospheric pressure) overlaps, the engine, exhaust pipe, and other engine-related parts actually used for automobiles and the like are diverted. The test was performed using a test device called an engine bench incorporated in the section. With this test device, the engine is actually driven to perform evaluation and confirmation.
The state inside the exhaust pipe when the engine is actually running can be realized in the laboratory.For example, the quality, performance, corrosion resistance, etc. of the exhaust pipe valve device can be realized without spending time and money running the car. It can be easily evaluated and confirmed. The engine bench will be described with reference to FIG. The engine bench includes devices and parts that are actually used in an automobile or the like, such as an engine body 50, an intake pipe 51, an exhaust pipe 52, a fuel tank 54, and a control device including a load machine 53 and a controller 55 disposed on an output shaft of the engine. A test product, such as an exhaust pipe valve device 56, which is constituted by equipment for cooling an engine, and is subjected to an evaluation / confirmation test on the engine bench, is mounted at a position where it should be mounted, such as in the exhaust pipe 52. This engine bench is
When the engine starts, accelerates, decelerates, or stops, the driver
The drive control of the engine, which has been performed through an accelerator pedal or the like, can be performed by an electric instruction from the controller 55, and the load amount of the vehicle, the gradient of the traveling road, the vehicle speed can be controlled by an electric signal from the controller 55. The load machine 53 generates a load corresponding to the engine load caused by the above-described operation, controls the driving of the engine 50, and operates a sample such as an exhaust pipe valve device. As described above, the engine bench is configured by functionally combining devices and parts actually used in an automobile and the like with devices unique to the engine bench.
2 In order to bring the inside of the specimen to the test temperature and pressure state of the specimen, the operating conditions are instructed from the controller 55 to the engine body 50 and the load machine 53, and the specimen is operated. This device evaluates and confirms quality, performance, corrosion resistance, etc. under the same conditions as when mounted on a car or the like.

However, when trying to evaluate and confirm the quality, performance, etc. of exhaust system components by using the engine bench to realize, for example, conditions corresponding to the actual temperature and pressure inside the exhaust pipe, there are many cases. Therefore, these problems will be described below. For example, the temperature of the exhaust gas in the exhaust pipe of an automobile varies from 850 ° C. to a wide temperature range such as the atmospheric temperature. Therefore, in order to obtain a predetermined exhaust gas temperature, which is a test condition, the engine must be driven for a long time against the load of an excessively loaded machine to increase the engine body temperature, or conversely, the engine must be prolonged. You have to stop the engine for a while and lower the engine temperature. This will consume a lot of test time and fuel. In addition, during the evaluation / confirmation test, noise and vibration are generated by driving the engine and the like, and various problems concerning the environment occur. If noise and vibration control measures are taken to prevent these problems, a large amount of equipment-related costs will be required. In addition, the load machine installed on the output shaft of the engine must have a large capacity because it needs to generate a load corresponding to the total resistance actually received when the car is running, etc., and is considerably expensive in terms of cost. Becomes In general, an engine body is used that is mounted on a vehicle to which a sample is mounted. Therefore, the engine body must be replaced each time the sample is used. As described above, the conventional engine bench requires equipment cost, fuel consumption,
There are many problems in test time, noise, vibration, etc. Equipment and parts on which high-temperature gas or high-temperature compressed air acts,
For example, when evaluating and confirming the quality and performance of exhaust system components, etc. under independent conditions such as temperature only or pressure only, simply raise the temperature of the sample or adjust the fluid supplied to the sample. It is not necessary to use an engine bench as it is only necessary to increase the pressure.However, in the case of an evaluation / confirmation test under overlapping conditions in which both the temperature and pressure of the fluid supplied to the specimen are changed, When conducting evaluation / confirmation tests under conditions that include the scientific properties of the fluid to be supplied to the sample (for example, the same as the exhaust gas from an automobile engine), there is no simple test device. At present, the engine bench had to be used.

[0004]

SUMMARY OF THE INVENTION Problems to be solved by the present invention are to solve the following problems: devices and parts on which high-temperature gas, such as exhaust gas from an engine or combustion gas from a combustion device, or high-temperature compressed air acts; Evaluate and confirm the quality, performance, corrosion resistance, etc. of the exhaust system devices and parts provided in the exhaust pipe of the engine under the conditions in which it is actually used, economically, efficiently, and An object of the present invention is to provide a high-temperature and high-pressure test apparatus that can be performed without causing an environmental problem.

[0005]

According to a first aspect of the present invention, there is provided a first conduit for introducing compressed air from a compressed air supply device to a test sample, and a high-temperature gas. A high-temperature high-pressure test comprising: a second conduit for introducing a high-temperature gas from a generator into the specimen; and a heating device provided in the first conduit and heating compressed air introduced to the specimen. The apparatus is characterized in that high-temperature gas from the high-temperature gas generator is introduced into the heating device, and the high-temperature gas heats compressed air to be introduced into the specimen.

According to a second aspect of the present invention, at least one of the first conduit and the second conduit has one of the compressed air and the high-temperature gas introduced into the specimen. And a flow rate adjusting valve for adjusting the flow rate.

Further, in the invention according to a third aspect, a branch pipe is provided for connecting the second pipe and the heating device, and through which a high-temperature gas for heating compressed air introduced into the specimen flows. A flow control valve for adjusting the flow rate of the high-temperature gas introduced into the heating device and heating the compressed air introduced into the specimen is provided in the branch pipe line.

Further, in the invention according to a fourth aspect, a first on-off valve is provided in the first conduit for flowing and shutting off the compressed air, and the flow of the high-temperature gas is distributed in the second conduit.
A second opening / closing valve for shutting off is provided.

[0009]

In the high-temperature and high-pressure test apparatus of the present invention having the above-described structure, the compressed air from the compressed air supply device is heated by the heating device using the high-temperature gas from the high-temperature gas supply device as a heat source to produce a test sample. It is possible to introduce. In particular, in the invention of claim 4, since the open / close valve is provided in each of the pipeline for introducing the compressed air to the specimen and the pipeline for introducing the high-temperature gas, the compressed air and the high-temperature gas are supplied to the specimen. Since the introduction can be switched arbitrarily, the degree of freedom of the evaluation / confirmation test increases. Further, as the high-temperature gas supply device, a general kerosene, a heater or an air blower using heat as a heat source such as via or electricity or gas, or a burner or the like using a via or gasoline as fuel may be used. When a burner such as gasoline is used, the high-temperature gas component to be introduced into the test sample can be made equal to the exhaust gas component of an actual engine of an automobile or the like, and a corrosion resistance test for high-temperature gas becomes possible.
Further, according to the present invention, since no noise and vibration are generated without using an engine, no soundproofing and vibrationproofing measures are required, and the cost and size of the test apparatus can be reduced. Further, since no noise or vibration is generated, no environmental problem occurs.

In the invention of claim 2, since a flow rate adjusting valve for adjusting the flow rate of the compressed air or the high-temperature gas introduced into the sample is provided, the compression introduced into the sample during the evaluation / confirmation test is provided. The flow rate of air or hot gas can be easily adjusted according to test conditions.

Further, in the invention according to claim 3, a flow rate adjusting valve for adjusting the flow rate of the high-temperature gas for heating the compressed air introduced into the specimen to be introduced into the heating device is provided. The temperature of the compressed air introduced into the test sample can be easily adjusted according to the test conditions.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a view showing a first embodiment of a high-temperature and high-pressure test apparatus according to the present invention. FIG. 3 is a diagram showing a heating device used in the embodiment of the high-temperature and high-pressure test device of the present invention. The high-temperature and high-pressure test apparatus according to the first embodiment performs an evaluation / confirmation test of an exhaust pipe valve device provided in an exhaust pipe of an engine of an automobile or the like. It is attached to the part 4. This high-temperature and high-pressure test apparatus includes a compressed air supply device 1, a first conduit 3 for guiding compressed air supplied from the compressed air supply device 1 to an exhaust pipe section 4 via a heating device 2, and a test sample. And a high-temperature gas generator 6 having a compressed air supply system comprising an exhaust pipe 4 for attachment.
A second pipe 7 for guiding the high-temperature gas supplied from the high-temperature gas generator 6 to the exhaust pipe section 4 through which the specimen is mounted via the heating device 2; To the second inlet 2d of the hot gas passage 8 provided inside the heating device 2.
The heating device 2 forms a part of the first pipe 3 through which the compressed air flows and a part of the second pipe through which the high-temperature gas flows. A passage 5 having one inlet 2b and a first outlet 2c connected to the exhaust pipe section 4, a second inlet 2d connected to the branch pipe 7a of the second pipe 7, and the hot gas to the atmosphere. Second outlet 2 to connect
A high-temperature gas passage 8 is provided on the outer peripheral side of the passage 5. The passage 5 and the high-temperature gas passage 8 are made of a metal tube wall 2e having high heat resistance capable of withstanding a high temperature of about 850 ° C.
2f, and the metal pipe wall 2e of the passage 5 has a pressure resistance of about 10 kg / cm2 because of the flow of compressed air. A space between the metal pipe walls 2e and 2f is filled with a metal wool 2g made of a metal having a good thermal conductivity. This is because the elasticity of the metal wool 2g absorbs the deformation due to the thermal expansion of the metal tube walls 2e and 2f.
As described above, the passage 5 and the high-temperature gas passage 8 are partitioned by the heat transfer pressure partition 9 made of the metal pipe walls 2e and 2f and the metal wool 2g having good thermal conductivity. Therefore, when the high-temperature gas is supplied to the high-temperature gas passage 8, the heat of the high-temperature gas is transmitted to the passage 5 through the heat transfer pressure partition 9, and the compressed air in contact with the metal pipe wall 2 e of the passage 5 is heated to increase the temperature. I do.

The high-temperature gas generator 6 supplies the heater 2 together with a blower for supplying the atmosphere to the heater and a heater capable of burning high-temperature gas of about 1000 ° C. equivalent to the exhaust gas of an actual vehicle by burning light oil. And a control device for adjusting the supply amount of hot gas to be supplied and the temperature thereof. Therefore, by adjusting the supply amount and temperature of the high-temperature gas and the combustion state of the fuel by the control device, the temperature of the compressed air supplied to the specimen, the temperature and the gas component of the high-temperature gas are adjusted to the test conditions. Is possible. Further, the compressed air supply device 1 has an air compressor and an air tank for compressing the atmosphere to a pressure of about 8 kg / cm 2, and a pressure flow control device for adjusting the pressure and supply amount of the compressed air supplied to the specimen. It has. Therefore, it is possible to adjust the pressure and the supply amount of the compressed air supplied to the specimen by the pressure flow controller to the test conditions.

On the other hand, the first conduit 3 has a first on-off valve 10 upstream of the heating device 2 and a second conduit connected to a position 3a downstream of the first on-off valve 10 of the first conduit 3. The second on-off valve 12 is disposed in the conduit 11 which forms a part of the second on-off valve, and the third on-off valve 13 is disposed in the branch conduit 7a branched from the second conduit 7 upstream of the second on-off valve. Then, the first pipe 3 is connected and disconnected by the first on-off valve 10 to supply and cut off the compressed air from the compressed air supply device 1 to the test sample, and the third on-off valve 13 supplies the branch pipe 7a. To supply and shut off high-temperature gas from the high-temperature gas generator 6 to the passage 8 of the heating device 2, and to communicate and shut off the second pipe 7 by the second on-off valve 12 to generate high-temperature gas. The high-temperature gas is supplied and shut off from the device 6 to the specimen, and the high-temperature gas is supplied to the specimen attached to the exhaust pipe section 4. It is to allow supply and hot compressed air or the like directly. The first opening / closing valve 10, the second opening / closing valve 12, and the third opening / closing valve 13 must surely fulfill the role of passing and stopping the high-temperature gas. It is provided in. Accordingly, by appropriately controlling the opening and closing of the first opening / closing valve 10, the second opening / closing valve 12, and the third opening / closing valve 13, the low pressure but high flow high temperature gas or high temperature compressed air can be freely discharged to the exhaust pipe section. 4 can be introduced. For example, when the exhaust pipe valve device 56 is attached as a sample,
When the exhaust pipe valve device 56 is inactive, the first on-off valve 1
0 and the third on-off valve 13 are closed, and the second on-off valve 12 is opened. As a result, only a low-pressure, but high-temperature, high-temperature gas is supplied to the exhaust pipe valve device 56 through the second pipe 7, and when the exhaust pipe valve device 56 is operating, the second on-off valve 12 is closed. Then, the first on-off valve 10 and the third on-off valve 13 are opened. As a result, the high-temperature gas is supplied to the passage 8 of the heating device 2, so that the compressed air introduced into the passage 5 of the heating device 2 through the first on-off valve 10 is heated and introduced into the exhaust pipe valve device 56. . This is because when the exhaust pipe valve device 56 is actually mounted on the exhaust pipe of the engine, when the engine is not operated, low-pressure but high-temperature exhaust gas of the engine is supplied, and when the exhaust pipe valve apparatus 56 is operated, the exhaust gas is lower than the non-operated state. This is equivalent to a state in which high-pressure exhaust gas is supplied. In this way, it is possible to reproduce the state in which the test sample is actually used like an engine bench without using a large device such as an engine. Become.

The first opening / closing valve 10, the second opening / closing valve 12, and the third opening / closing valve 13 are all of a common type that withstands the use of high-temperature gas and has little leakage when the pipeline is closed. These on-off valves will be described below with reference to FIG. On-off valve
Both ends 21 b and 21 c of the housing 21 are flanged and mounted in the middle of the pipe, and an inner hole 22 for communicating the pipe is provided inside the housing 21. A lateral hole 23 reaching the inner hole 22 is provided on the side surface 21a of the housing.
Is opened, and the inside of the side hole 23 is moved from the position where the valve 24 completely covers the inner hole 22 to the inner hole 2.
2 is provided so as to be slidable to a completely open position. When the valve 24 is in a position that completely covers the inner hole 22, one end surface 24 a thereof comes into contact with a seating surface 25 provided around the inner hole 22 so as to close the inner hole 22. Have been. The on-off valve is connected to one end 2 of the housing.
1b is mounted upstream so that an upstream pressure acts on the other end surface 24b of the valve, whereby the space between the seat surface 25 and the one end surface 24a of the valve is strongly pressed to maintain airtightness. ing. The valve 24 is driven between a position where the inner hole 22 is completely covered by a pneumatic cylinder 26 operated by compressed air and a position where the inner hole 22 is completely opened. A water-cooling chamber 27 for cooling the inside of the cylinder 26 is provided on the outer periphery of the cylinder 26 to prevent the seal 29 of the piston 28 and the lubricating oil therein from deteriorating at a high temperature. The seal 31 of the shaft 30 to be used is made of a stainless steel seal that can withstand high temperatures, and is designed to withstand high temperatures.

FIG. 2 shows a second embodiment of the present invention. In contrast to the first embodiment described above, the flow rate of the high-temperature gas supplied to the passage 5 of the heating device 2 is adjusted by partially discharging the high-temperature gas from the high-temperature gas generator 6 to the branch pipe 7a. A flow control valve 40 is provided. Thereby, the state of heat supply by the high-temperature gas to the heating device 2 is quickly and easily changed, and the setting of the temperature of the compressed air flowing through the pipe 5 of the heating device 2 to the desired test temperature condition can be performed in a short time. It can be easily achieved. Other configurations of the second embodiment are the same as those of the first embodiment.

In the second embodiment, the flow control valve 40 is provided in the branch pipe 7a. This flow control valve is connected to the second pipe 7 connecting the high-temperature gas generator 6 and the sample. May be provided. With this configuration, the supply amount of the high-temperature gas introduced into the sample can be freely adjusted. Further, the flow control valve may be provided on the downstream side of the specimen in the exhaust pipe section 4. In this case, for example, an exhaust muffler or an exhaust It is possible to easily perform an evaluation / confirmation test of a device / part having no function of closing an exhaust pipe such as a particulate trap for removing soot and the like in a gas.

Note that the technology of the present invention is not limited to the technology in the above-described embodiment, but may be implemented by means of another mode that performs the same function. Can be changed or added. For example, the air compressor of the compressed air supply device 1 is not a dedicated one, but may be a system that introduces compressed air from a common one in a factory. The heater of the high-temperature gas generator 6 uses a fossil fuel such as light oil as a heat source. Alternatively, the heat source may be a flammable gas, electricity, or the like. Further, in the above-described embodiment, the first pipe 3 from the compressed air supply device 1 and the second pipe 7 from the high temperature gas generator 6 are joined on the upstream side of the heating device 2. May be merged on the downstream side. Further, in the above-described embodiment, the flow rate adjustment valve 40 adjusts the flow rate by discharging a part of the fluid to the outside. However, the present invention is not limited to this, and it is sufficient that the flow rate of the fluid can be adjusted. . Further, in the above-described embodiment, the test product of the high-temperature and high-pressure test device is an exhaust pipe valve device attached to an exhaust pipe of an automobile engine. However, the present invention is not limited to this. As long as a device or a component to which a high-temperature gas such as a combustion gas of the device or a high-temperature compressed air acts, any device or component can be used as a sample to perform an evaluation / confirmation test.

[0019]

As is apparent from the above description, according to the high temperature and high pressure test apparatus of the present invention, the compressed air from the compressed air supply apparatus is heated by the heating apparatus using the high temperature gas from the high temperature gas supply apparatus as a heat source. Can be introduced into the test sample. In addition, since open / close valves are provided for the pipeline for introducing compressed air to the specimen and the pipeline for introducing high-temperature gas, the introduction of compressed air and high-temperature gas to the specimen can be switched as desired. As a result, the degree of freedom in evaluation and confirmation tests increases. Further, as the high-temperature gas supply device, general kerosene, via, electricity, a heater or a blow glow using gas or the like as a heat source, or a burner using via or gasoline or the like may be used. When a burner such as gasoline is used, the high-temperature gas component introduced into the test sample can be made equal to the exhaust gas component of an actual engine such as a car.
Corrosion resistance test for high temperature gas is also possible. Further, according to the present invention, since no noise and vibration are generated without using an engine, no soundproofing and vibrationproofing measures are required, and the cost and size of the test apparatus can be reduced. Further, since no noise or vibration is generated, no environmental problem occurs.

Further, since a flow rate adjusting valve for adjusting the flow rate of the compressed air or the high-temperature gas introduced into the sample is provided, the flow rate of the compressed air or the high-temperature gas introduced into the sample is tested in the evaluation / confirmation test. It can be easily adjusted according to the conditions. In addition, a flow control valve for adjusting the flow rate of the high-temperature gas that heats the compressed air to be introduced into the specimen is provided.In the evaluation and confirmation tests, the temperature of the compressed air introduced into the specimen is adjusted according to the test conditions. It can be easily adjusted.

[Brief description of the drawings]

FIG. 1 is a diagram showing a first embodiment of a high-temperature and high-pressure test apparatus according to the present invention.

FIG. 2 is a view showing a second embodiment of the high-temperature and high-pressure test apparatus of the present invention.

FIG. 3 shows an embodiment of a high-temperature and high-pressure test apparatus according to the present invention.
3 is a longitudinal sectional view of the heating device in FIG. 2 and FIG.

FIG. 4 shows an embodiment of a high-temperature and high-pressure test apparatus according to the present invention.
3 is a longitudinal sectional view of the on-off valve in FIG. 2.

FIG. 5 is a simplified diagram of a conventional engine bench test apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Compressed air supply device 2 Heating device 3 First pipe 4 Exhaust pipe part 5 Passage 6 Hot gas generator 7 Second pipe 7a Branch pipe 8 Hot gas path 9 Heat transfer pressure partition 10 First open / close valve 11 pipe Road 12 Second on-off valve 13 Third on-off valve 40 Flow control valve 56 Sample (exhaust pipe valve device)

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) F04C 29/10 311 F04C 29/10 311A 3H045 G01M 19/00 G01M 19/00 Z 4G057 G01N 17/00 G01N 17 / 00 F term (reference) 2G024 AA15 BA11 CA16 CA17 DA15 DA16 2G050 BA11 CA02 EA01 EA04 EA05 EC01 2G087 AA15 BB01 BB02 DD06 DD07 3H003 AA00 AB00 AC02 CD07 3H029 AB02 BB13 BB41 BB51 BB57 ACO15 CC46 CCA BA28 BA31 DA00 DA15 DA41 4G057 AD01 AD11

Claims (5)

[Claims] A first conduit for introducing compressed air from a compressed air supply device to the specimen; a second conduit for introducing high-temperature gas from a high-temperature gas generator to the specimen; A high-temperature and high-pressure test device provided in one conduit and having a heating device for heating the compressed air to be introduced into the sample; introducing a high-temperature gas from the high-temperature gas generator into the heating device; A high-temperature and high-pressure test apparatus characterized in that compressed air introduced into the specimen is heated by a gas. 2. A flow control valve for adjusting a flow rate of one of the compressed air and the high-temperature gas introduced into the specimen in at least one of the first pipe and the second pipe. The high-temperature and high-pressure test apparatus according to claim 1, wherein the apparatus is provided. 3. A branch line for connecting a high-temperature gas for heating compressed air to be introduced into the specimen by connecting the second line and the heating device, and the heating device is provided in the branch line. 3. The high-temperature and high-pressure test apparatus according to claim 1, further comprising a flow rate adjusting valve for adjusting a flow rate of a high-temperature gas introduced into the sample and heating the compressed air introduced into the sample. 4. A first opening / closing valve for flowing / blocking the compressed air is provided in the first pipeline, and a second switching valve for flowing / blocking the high-temperature gas is provided in the second pipeline. 4. The high-temperature and high-pressure test apparatus according to claim 1, wherein: 5. The flow rate of the compressed air or the high-temperature gas passing through the sample, downstream of the sample in a pipe through which the compressed air or the high-temperature gas passes through the sample. The high-temperature and high-pressure test apparatus according to any one of claims 1 to 5, further comprising a flow control valve for adjusting the pressure.