Pressure-bearing opening performance detection tester for pulse engine hard isolation device

Abstract

The invention relates to a pulse engine hard isolation device pressure-bearing opening performance detection tester, which comprises a left tool, a right tool, a standard engine, a heat insulation screw ring, a top cover and an isolation device, and is characterized in that the isolation device is arranged between the left tool and the right tool, and the left tool and the right tool are connected through a flange to form an isolation device fixing tool; the standard engine is arranged on the side, needing to bear pressure, of the isolation device, the heat insulation screw ring is installed on the other side, and the top cover is connected with the standard engine. Limiting steps matched with the isolation device are arranged on the inner circumferential walls of the large ends of the openings of the left tool and the right tool so that the left tool and the right tool can be tightly connected. Large opening threads are arranged at the small opening ends of the left tool and the right tool, so that a standard engine and a heat insulation screw ring are convenient to install. The tester disclosed by the invention is simple and small in structure and convenient in general assembly, the existing standard engine shell is conveniently utilized as a tool to carry out cold-state pressure bearing and hot-state opening performance detection, the test period is greatly shortened, and manpower and economic cost are saved.

Description

Technical Field

[0001] The invention relates to the technical field of pulse engine testing, and in particular to a pulse engine hard isolation device pressure-bearing opening performance detection tester. Background Art

[0002] As a key component of the pulse engine, the isolation device is not only required to meet the requirements of insulation and pressure resistance, and withstand the high temperature and high pressure gas during the working time of the I pulse, but also to be able to open reliably during the II pulse, so that the high temperature and high pressure gas generated by the II pulse combustion chamber can smoothly pass through the pulse isolation device, and then fill the I pulse combustion chamber, and finally be ejected after being accelerated by the nozzle to obtain secondary thrust. Under the conditions of meeting the use of the isolation device, it is necessary to reasonably select lightweight component materials and compact interstage isolation methods, which are very critical to reducing the negative mass of the pulse engine. This requires the design of a new and simple isolation device pressure bearing and opening performance tester to facilitate rapid and multiple iterations during the isolation device design process, and also facilitate the performance testing of each batch of isolation devices.

[0003] The existing isolation device pressure bearing and opening performance tester is a commonly used thick-walled tester with a complex structure, large size, heavy weight, and high cost. At the same time, the tester assembly is cumbersome, the work is difficult and time-consuming. During the hot opening process, it is necessary to stick the drug column billet on the inner wall of the tester (the billet is cut manually). During the hot opening process using the billet, the consistency is poor, and the billet has serious insulation ablation, which has a certain impact on the internal ballistics when reused. At the same time, the tester as a whole adopts a flange bolt connection structure, the overall number of bolts is large, the assembly is cumbersome, and the workload is large. Summary of the invention

[0004] Based on the above technical problems, the present invention proposes a pulse engine hard isolation device pressure-bearing opening performance detection tester to solve the problems of complex structure, large workload and high cost of existing testers.

[0005] In order to solve the above technical problems, one of the objects of the present invention is to provide a pulse engine hard isolation device pressure-bearing opening performance detection tester, the tester includes: a left tooling, a right tooling, a standard engine, an insulating screw ring, a top cover and an isolation device, the isolation device is arranged between the left tooling and the right tooling, the left tooling and the right tooling are connected by a flange to form an isolation device fixed tooling; the standard engine is arranged on the side of the isolation device that needs to bear pressure, and the insulating screw ring is installed on the other side, and the top cover is connected to the standard engine.

[0006] Furthermore, the inner peripheral walls of the large ends of the openings of the left tooling and the right tooling are provided with limiting steps that match the isolation device to enable a tight connection.

[0007] Furthermore, the small opening ends of the left tooling and the right tooling are provided with large opening threads, which are convenient for installing a standard engine and an insulating screw ring.

[0008] Furthermore, the inner circumferential walls of the left tooling and the right tooling are provided with a plurality of limit blocks along the circumferential direction to fix the isolation device.

[0009] Furthermore, the entire tester tooling is made of steel.

[0010] Furthermore, the sealing method of the connection part between the fixing fixture of the isolation device and the standard engine is consistent with that of the standard engine.

[0011] The above one or more technical solutions of the present invention have at least one or more of the following technical effects: The present invention provides a simple and efficient isolation device pressure and opening performance detection tester. The tester has a simple and compact structure and is easy to assemble. It can conveniently use the existing standard engine casing as a tooling to perform cold pressure and hot opening performance tests. At the same time, it eliminates the previous process of hot opening by pasting square blanks on the inner wall of the tester. It directly connects to the standard engine through a large-opening thread and uses the standard engine for hot opening, which greatly alleviates the test cycle and saves manpower and economic costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 : Schematic diagram of the performance tester for the hard isolation device of the pulse engine of the present invention;

[0013] Figure 2 : Schematic diagram of the left and right tooling of the isolation device pressure-bearing and opening tester;

[0014] Figure 3 : Flow chart of the pressure bearing and opening performance tester for hard isolation devices.

[0015] Among them: 1-top cover, 2-standard engine, 3-left tooling, 4-isolating device, 5-right tooling, 6-insulating screw ring. Specific implementation plan

[0016] The present invention provides a pulse engine hard isolation device pressure opening performance tester, including an isolation device fixing tool, the tool is provided with a left tool and a right tool (the left and right tool structures are basically the same, and the interface is fine-tuned). The left and right tools are both flanged on one side and large-opening threads on the other side. The left and right tools are connected by the flange, and the isolation device to be tested is placed in the middle. The standard engine is connected to the left or right side by threads (determined by pressure bearing and opening tests). The inner circumferential walls of the left and right tools are provided with limit steps that match the isolation device.

[0017] The following is a clear and complete description of the technical solutions in the embodiments of the present invention in combination with the embodiments of the present invention and the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the obtained embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0018] A pulse engine hard isolation device pressure opening performance tester includes an isolation device fixing tool, which is provided with a left tool and a right tool (the left and right tool structures are basically the same, and the interface is fine-tuned). The left and right tools have a flange on one side and a large-opening thread on the other side. The left and right tools are connected by the flange, and the isolation device to be tested is placed in the middle. The threaded interface remains consistent with the standard engine, and the standard engine is connected by threading, either on the left or on the right (determined by the pressure bearing and opening test). The inner circumferential wall of the left and right tools is provided with a limiting step that matches the isolation device. The inner wall of the above-mentioned isolation device fixing tool (left and right tool) is provided with a limiting step for fixing the isolation device. The isolation device fixing tool (left and right tool) is connected by flange bolts. The other two sides of the isolation device fixing tool (left and right tool) (the other side of the tool flange connection) adopt a large-opening thread design, which is consistent with the commonly used standard engine thread, and is convenient for assembly. The overall appearance design of the isolation device fixing tool (left and right tool) is compact, the interface is simple, and it is easy to use. The sealing method of the connection between the isolator fixture (left and right fixtures) and the standard engine is the same as that of the standard engine. The entire tester fixture is made of steel.

[0019] As shown in the figure, the pulse engine hard isolation device pressure opening performance tester tooling includes a left tooling, a right tooling, a standard engine and an insulating screw ring. The left and right tools are connected by flange bolts, and the standard engine and the insulating screw ring are connected by large opening threads at both ends.

[0020] The core of this tester is the design of the left and right tooling. The inner wall is provided with multiple limit blocks along the circumferential direction, as shown in the figure, which can cleverly fix the isolation device. At the same time, one side of the left and right tooling is connected to the standard engine, and the other side is connected to the insulation screw ring (not installed for cold pressure bearing). During the pressure bearing performance test of the isolation device, water is injected through the ignition hole of the top cover to bear the pressure. During the opening process, the standard engine charge is used for hot opening. The ignition method is consistent with the standard engine, and the ignition wire is led out from the engine head.

[0021] The specific implementation flow chart is shown in the figure. During the pressure test of the isolation device, the isolation device is correctly installed in the middle position of the left and right tooling. After installation, the two toolings are connected and fixed with bolts (loading pads and flat pads). After fixing, the standard engine casing is connected to the side of the isolation device that needs to be pressure-bearing. At the same time, the standard engine top cover is connected for water pressure pressure test. If hot pressure is required, it is necessary to connect the standard engine with charge (without the top cover and the nozzle) for ignition test. A simple ignition powder bag is used for ignition, and the ignition wire is discharged along the nozzle. The ignition process is consistent with the standard engine. During the hot opening test of the isolation device, a standard engine with charge (without the top cover and the nozzle) is borrowed and installed on the side that needs to be opened. A hot opening test is carried out. A simple ignition powder bag is used for ignition. The ignition wire is discharged along the nozzle. The ignition process is consistent with the standard engine test process. During the cold bench test, the tester is placed on the ground for testing. During the hot test, the tester is fixed to the test thrust frame using tooling.

[0022] Compared with previous testers, the pulse engine hard isolation device pressure bearing and opening performance detection tester of the present invention has a simple structure, is lightweight, easy to install, has a simple interface, and is reusable. At the same time, it improves work efficiency and reduces costs. See Table 1 for details.

[0023] Table 1 Comparison of the schemes before and after the tester improvement

[0024]

[0025] The pressure-bearing and opening performance detection tester of the hard isolation device of the pulse engine of the present invention has undergone a water pressure bearing test, a water pressure opening test and a hot opening test. The isolation device pressure bearing test withstands a pressure of 24MPa, and the opening pressure determined by the cold opening test of the isolation device is 2.1MPa, which is basically consistent with the hot opening pressure of 2.15MPa.

[0026] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A pulse engine hard isolation device pressure opening performance tester, characterized in that: The tester comprises: a left tool (3), a right tool (5), a standard engine (2), an insulating screw ring (6), a top cover (1) and an isolation device (4); the isolation device (4) is arranged between the left tool (3) and the right tool (5); the left tool (3) and the right tool (5) are connected via a flange to form an isolation device fixing tool; the standard engine (2) is arranged on the side of the isolation device that needs to bear pressure, and the insulating screw ring (6) is installed on the other side; the top cover (1) is connected to the standard engine (2).

2. The pulse engine hard isolation device pressure opening performance detection tester according to claim 1 is characterized in that: The inner peripheral walls of the large opening ends of the left tooling (3) and the right tooling (5) are provided with limiting steps that match the isolation device (4) so ​​that they are tightly connected.

3. The pulse engine hard isolation device pressure opening performance detection tester according to claim 1 is characterized in that: The small opening ends of the left tooling and the right tooling are provided with large opening threads, which are convenient for installing a standard engine and a heat-insulating screw ring.

4. The pulse engine hard isolation device pressure opening performance detection tester according to claim 1 is characterized in that: The inner circumferential walls of the left tooling and the right tooling are provided with a plurality of limit blocks along the circumferential direction to fix the isolation device.

5. The pulse engine hard isolation device pressure opening performance detection tester according to claim 1 is characterized by: The tester tooling is made entirely of steel.

6. The pulse engine hard isolation device pressure opening performance detection tester according to claim 1 is characterized by: The sealing method of the connection part between the isolating device fixing fixture and the standard engine is consistent with that of the standard engine.

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