JPH0665846U - Heat resistant material testing equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] A test device for heat-resistant members such as exhaust manifolds. The number of combinations and positions of the combustion chambers that make up the combustor and the intervals between the combustors can be set freely to determine the exhaust manifold Enables multiple tests regardless of the number of evaluation cylinders for heat resistant materials. [Structure] A plurality of combustors 2 are provided at intervals, and each of the combustors 2 is connected to a heat-resistant member 5 via a mounting jig 3 and a cylinder head 4. Further, each combustor 2 is composed of a plurality of combustion chambers 7, each combustion chamber 7 is composed of a main combustion burner having an ignition sensor and a preliminary combustion burner, and further, a primary air passage 8 and an exhaust pressure boosting air passage 9 are provided. The fuel gas supply passage 10 is connected with a detachable flexible pipe (for example, a flexible tube).

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a test apparatus suitable for testing heat resistance and heat insulation of heat resistant members, particularly exhaust system members used in internal combustion engines of automobiles.

[0002]

[Prior art]

 Conventionally, when developing a new engine, the components that make up the engine are developed. At that time, the durability of exhaust system components such as the exhaust manifold and turbine housing cannot be evaluated until it is confirmed that the engine has the desired performance and durability. There was a problem that it would be extremely long.

For this reason, it has been desired to develop a test apparatus capable of evaluating a heat-resistant member under the same conditions as an actual engine without waiting for the completion of the engine. Japanese Unexamined Patent Application Publication No. 1-860333 discloses a test apparatus for obtaining a desired temperature distribution on the surface of the heat-resistant member by burning the inner surface of the tubular heat-resistant member with combustion gas and exhaust boosting air. This test equipment supplies a combustor connected to a heat resistant member, a combustion chamber that constitutes this combustor, a combustion burner connected to or inserted in this combustion chamber, and fuel and combustion air supplied to this combustion burner. It consists of a supply channel, a flow rate control unit that controls the flow rate of fuel and combustion air, and a controller.

FIG. 2 is a plan view showing the outline of the configuration of a conventional heat-resistant member testing apparatus. In the test apparatus of FIG. 2, there is one combustor 2, and when two models are evaluated at the same time, a common mounting jig 3 is connected, and this mounting jig 3 is used as a heat resistant member 5 without a cylinder head. Directly connect the pipe parts of two different exhaust manifolds. The combustor 2 is composed of eight combustion chambers 7. Each combustion chamber 7 has a main combustion burner having an ignition sensor and a preliminary combustion burner, and further, a primary air passage, a fuel gas supply passage 8 and an exhaust pressure increasing air space. The airway 9 is fixedly connected to the test apparatus by piping.

[0005]

[Problems to be solved by the device]

 The heat-resistant member testing device disclosed in Japanese Patent Laid-Open No. 1-86033 has six or eight combustion chambers inserted in the combustor at fixed positions and intervals, so that the durability of different types of exhaust manifolds can be evaluated. It may be difficult to perform in parallel. For example, in the case of evaluating the exhaust manifolds of two different four cylinders using a test device having eight combustion chambers, an integral mounting jig that can be shared as a mounting member is manufactured. . However, because the test partner of each other is determined by the common jig, the schedule for performing the thermal fatigue test is limited, and in order to perform the test in parallel with the exhaust manifold of another different model, a new common mounting is required. It becomes necessary to manufacture a jig. Also, in the case of testing a 4-cylinder exhaust manifold with a test device having six combustion chambers, two combustion chambers may be stopped.

In addition, when two different exhaust manifolds are evaluated with a common jig, the two exhaust manifolds connected to the jig have a narrow gap, which makes mutual radiant heat influence and makes accurate evaluation difficult. ing. In addition, it may be difficult to mount the cylinder head for the test because of the area of the mounting part. Another problem is that it is difficult to completely install the measurement sensor between the exhaust manifolds.

In the exhaust manifold thermal fatigue test, the present invention sets the number of combinations of combustion chambers constituting the combustor, their positions, and the interval between the combustors to freely set the number of cylinders for evaluation of the exhaust manifold. It is an object of the present invention to provide a heat-resistant member testing device that allows multiple tests to be performed independently of each other.

[0008]

[Means for Solving the Problems]

 In order to solve the above-mentioned problems, the heat-resistant member testing apparatus of the present invention produces a combustor 2 with a combination of various burners such as two, three, and four, and a combustion chamber that constitutes this combustor 2. Combustion air passage 8 connecting between the combustion burner connected to or inserted in 7 and the flow rate control unit 11 and the fuel supply passage 9 are connected by a detachable flexible pipe (for example, a flexible tube). To do.

[0009]

[Action]

 By setting the combustion air passage 8 and the fuel supply passage 9 as detachable flexible pipes, the setting and combination of the position of the combustion chamber 7 in which the combustion burner is connected or inserted becomes free. Furthermore, it becomes possible to freely set the interval between the combustors 2.

[0010]

【Example】

 The present invention will be described in detail below. FIG. 1 is a plan view showing an embodiment of the heat resistant member testing apparatus of the present invention. In the test apparatus 1 of the present invention, two combustors 2 are arranged at intervals, and a mounting jig 3 and a cylinder head 4 are connected to each of the combustors 2. Further, a pipe portion of an exhaust manifold is connected to the cylinder head 4 as a heat resistant member 5. Various sensors 6 are installed between the two types of exhaust manifolds. Each combustor 2a, 2b is composed of four combustion chambers 7, and each combustion chamber 7 is composed of a main combustion burner having an ignition sensor and a preliminary combustion burner, and further, a primary air passage and a fuel gas. The supply passage 8 and the exhaust pressure-increasing air passage 9 are connected by a detachable and flexible pipe (for example, a flexible tube).

The test apparatus of the present invention can also be used as one combustor having eight combustion burners, and has a cylinder head and a mounting jig, and the cylinder head has a heat-resistant member such as an exhaust manifold. The pipe part can be connected.

[0012]

[Effect of device]

 As described in detail above, the heat resistant member testing apparatus of the present invention has the following advantages.

(1) Since the number of combustion burners to be used can be freely set, the test schedules can be freely combined, and an efficient heat-resistant member test can be performed.

(2) The interval between the combustion burners is widened, so that it is possible to perform evaluation using a single mounting jig instead of a common jig, and it is also possible to use a cylinder head.

(3) Since two different types of exhaust manifolds can be arranged at intervals, the influence of radiant heat can be reduced. In addition, various sensors can be installed between both manifolds, improving the accuracy of the thermal fatigue test.

[Brief description of drawings]

FIG. 1 is a plan view showing a heat-resistant member testing apparatus according to an embodiment of the present invention.

FIG. 2 is a plan view showing a conventional heat-resistant member testing apparatus.

[Explanation of symbols]

1: Test apparatus, 2: Combustor, 3: Mounting jig, 4:
Cylinder head 5: Heat-resistant member, 6: Sensor, 7: Combustion chamber, 8: Primary air passage and fuel gas supply passage, 9: Exhaust pressure boosting air passage 10: Heat shield plate 11: Flow control unit, 1
2: Blower blower

Claims (1)

[Scope of utility model registration request] 1. A test device for evaluating the durability of a heat-resistant member by continuously or intermittently supplying heat energy to the heat-resistant member having at least one tube portion, and comprising a combustor connected to the heat-resistant member. A heat-resistant member testing device, wherein the number of combustion chambers to which a combustion burner for supplying combustion gas is connected or inserted and the interval between a plurality of the combustors can be freely changed.