CN211668928U - Diaphragm type pressure-bearing test device - Google Patents
Diaphragm type pressure-bearing test device Download PDFInfo
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- CN211668928U CN211668928U CN202020039258.3U CN202020039258U CN211668928U CN 211668928 U CN211668928 U CN 211668928U CN 202020039258 U CN202020039258 U CN 202020039258U CN 211668928 U CN211668928 U CN 211668928U
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Abstract
The utility model relates to a diaphragm type pressure-bearing test device, which comprises a pressure vessel, a top cover body, an ignition medicine box, a sealing ring, a diaphragm support, a diaphragm, a thread pressure plate, an ignition hole support, an igniter, a pressure measuring hole support and a pressure sensor, wherein the pressure vessel is of a high-pressure vessel structure and is connected with the top cover body through a 'pressure cooker' buckle; an ignition hole support is arranged outside the right center of the top cover body, a pressure measuring hole support is arranged outside the right side of the top cover body, and a diaphragm support is arranged outside the left side of the top cover body; an igniter is arranged on the inner side of the ignition hole support, an ignition medicine box is designed in the center of the top cover body and is connected with the top cover body through threads; and a pressure sensor is arranged in the pressure measuring hole support. The utility model discloses the structure is simple and easy, has realized the easy operation installation of subassembly, utilizes the diaphragm specification to realize the pressure-bearing test of different pressure ranges, and cost and cycle reduce by a wide margin, can be used to the detection of structure, subassembly bearing performance on the engine.
Description
Technical Field
The utility model relates to a diaphragm formula pressure-bearing test device belongs to the experimental field of solid engine for the examination of solid rocket engine portion, subassembly pressure-bearing performance.
Background
Modern solid rocket engines have a large number of pressure-bearing parts, and are particularly prominent in energy management engines and special power engines, such as sealed electric connectors, compartments, partition plates, interlayers and other assemblies commonly used in the energy management engines. The device is subjected to pressure bearing examination tests from design to application, and the traditional pressure bearing test devices have two types, namely a hydrostatic test device which places a component to be tested in a closed container to carry out hydrostatic examination on the static bearing performance of the component; and secondly, a scaling test engine device examination test is carried out, generally, a phi 315 engine is used as a pressure source to simulate the working internal pressure environment of the engine, a pressure-bearing cabin section is independently designed, and a pressure-bearing part to be tested is preset in the pressure-bearing cabin section. Both devices have shortcomings, one of the devices cannot simulate the rapid pressure building process of the engine, and the simulated environment is different from the real environment greatly, so that the devices are not generally adopted at present. The second method has good test characterization, but the test requires the development of a scaled test engine, and has long development period, high cost and complex installation and disassembly.
Disclosure of Invention
The utility model aims at: the device overcomes the defects of the existing test device, and provides a set of simple, feasible and low-cost measuring device for a single pressure-bearing test of engine component assemblies (such as sealed electric connectors, compartments, clapboards, partition plates and other component assemblies);
the technical solution of the utility model is that:
a diaphragm type pressure-bearing test device comprises a pressure container (1), a top cover body (2), an ignition medicine box (3), a sealing ring (4), a diaphragm support (5), a diaphragm (6), a threaded pressure plate (7), an ignition hole support (8), an igniter (9), a pressure measuring hole support (10) and a pressure sensor (11), wherein the pressure container (1) is of a high-pressure container structure, and the pressure container and the top cover body (2) can be installed and detached through rotation through a 'pressure cooker' buckle connection structure; the sealing is ensured between the pressure container (1) and the top cover body (2) through a sealing ring (4); an ignition hole support (8) is designed outside the right center of the top cover body (2), a pressure measuring hole support (10) is designed outside the right side, a diaphragm support (5) is designed outside the left side, a diaphragm (6) which is a key component of the pressure-bearing test device is placed in the diaphragm support (5) and is connected with the diaphragm support (5) through a threaded pressure plate (7) for compressing the diaphragm (6); an igniter (9) is arranged on the inner side of the ignition hole support (8), an ignition medicine box (3) is designed in the center of the top cover body (2) and is connected with the top cover body (2) through threads; a pressure sensor (11) is arranged in the pressure measuring hole support (10); the igniter (9) can generate a pressure source after igniting the ignition medicine box (3), the expected pressure is controlled by the diaphragm (6) device, real-time pressure detection is obtained by the pressure sensor (11), and the pressure bearing performance of the paired components is examined after the three are used in combination;
the diaphragm (6) is of a circular flat plate structure, and a weakening groove is designed in the middle;
the buckle connecting structure is formed by 8-10 buckles which are respectively and uniformly processed along the circumference on the pressure container (1) and the top cover body (2);
black powder or equivalent BPN is preset in the ignition medicine box (3);
in order to adapt to the development idea of high safety, simple operation and low cost, the diaphragms (6) are processed in batches, the diaphragms (6) are made of aluminum alloy materials with the characteristics of high strength and low density, the diaphragms (6) with different specifications are designed to be selected according to preset pressure for selection, during test, the diaphragms (6) with the corresponding specifications are selected according to the test pressure to ensure the maximum pressure value of the pressure capacity, and the requirement of the measured pressure environment is met;
compared with the prior art, the utility model the advantage lie in:
(1) compared with the traditional hydrostatic test device, the diaphragm type pressure-bearing test device overcomes the problem of too low pressure rising rate, and is closer to the real working condition of the engine;
(2) compared with a scaling test engine test device, the diaphragm type pressure-bearing test device overcomes the problems of high cost and long development period, and has the advantages of large pressure-bearing range, high safety and reusability;
(3) the pressure container and the top cover are connected in a manner similar to a buckle structure of a pressure cooker, so that the pressure container is simple to disassemble and assemble and has high efficiency;
(4) the multiple diaphragm specifications can realize the multi-working-condition preset pressure, and the adjustable range is wide;
(5) compare current test device, diaphragm formula pressure-bearing test device cost low.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and embodiments;
FIG. 1 is an assembly view of a diaphragm type pressure-bearing test device according to the present invention;
wherein: 1, a pressure container; 2, jacking the cover body; 3 igniting the medicine box; 4, sealing rings; 5, a diaphragm support; 6, a diaphragm; 7, a threaded pressure plate; 8 ignition hole support; 9 an igniter; 10 pressure measuring hole support; 11 a pressure sensor;
fig. 2 is a schematic three-dimensional structure diagram of the pressure vessel according to the present invention;
fig. 3 is a schematic three-dimensional structure diagram of the top cover body according to the present invention;
fig. 4 is a diagram of the diaphragm structure of the present invention.
Detailed Description
As shown in fig. 1, the membrane type pressure-bearing test device of the present invention comprises a pressure vessel (1), a top cover body (2), an ignition medicine box (3), a sealing ring (4), a membrane support (5), a membrane (6), a threaded pressure plate (7), an ignition hole support (8), an igniter (9) and a pressure measuring hole support (10), wherein the pressure vessel (1) is of a high pressure vessel structure, and the top cover body (2) and the pressure vessel are connected by a 'pressure cooker' buckle structure, and the installation and the disassembly can be completed by rotation; the sealing is ensured between the pressure container (1) and the top cover body (2) through a sealing ring (4); an ignition hole support (8) is designed outside the right center of the top cover body (2), a pressure measuring hole support (10) is designed outside the right side, a diaphragm support (5) is designed outside the left side, a diaphragm (6) which is a key component of the pressure-bearing test device is placed in the diaphragm support (5) and is connected with the diaphragm support (5) through a threaded pressure plate (7) for compressing the diaphragm (6); an igniter (9) is arranged on the inner side of the ignition hole support (8), an ignition medicine box (3) is designed in the center of the top cover body (2) and is connected with the top cover body (2) through threads; a pressure sensor (11) is arranged in the pressure measuring hole support (10); the igniter (9) can generate a pressure source after igniting the ignition medicine box (3), the expected pressure is controlled by the diaphragm (6) device, real-time pressure detection is obtained by the pressure sensor (11), and the pressure bearing performance of the paired components is examined after the three are used in combination;
the diaphragm (6) is of a circular flat plate structure, and a weakening groove is designed in the middle;
the buckle connecting structure is formed by 8-10 buckles which are respectively and uniformly processed along the circumference on the pressure container (1) and the top cover body (2);
black powder or equivalent BPN is preset in the ignition medicine box (3);
the assembly process of diaphragm formula pressure-bearing test device do: in the pressure bearing test process, a to-be-tested component is placed in a pressure container (1), an ignition powder box component (3) is installed on the inner side of a top cover body (2), an igniter (9) is installed in an ignition hole support (8), and a pressure sensor (11) is installed in a pressure measuring hole support (10). Placing the sealing ring (4) in a groove on the end face of the pressure container (1) to complete the assembly of the top cover body (2) and the pressure container (1), and having test conditions;
the working process of the diaphragm type pressure-bearing test device is as follows: the method comprises the steps of selecting a diaphragm with a specified specification according to a preset pressure value of a pressure bearing test to determine a maximum pressure value (after a pressure source exceeds the pressure bearing capacity of the diaphragm, the diaphragm is broken and opened, and the pressure is released), placing the diaphragm (6) in a diaphragm support (5), fixing the diaphragm with the diaphragm support (5) through a threaded pressure plate (7), and pressing the diaphragm (6). The test process comprises ignition, pressure bearing, diaphragm opening and pressure release, and the series of processes finally achieve the purpose of detecting the pressure bearing capacity of the component;
the structure diagram of the diaphragm (6) is shown in the attached figure 4, the diaphragm is a circular flat plate structure, the middle of the diaphragm is provided with a weakening groove, the outer diameter of the weakening groove is R, the thickness h = R ^2 × Pc/2R × τ of the diaphragm at the weakening part is provided, and the structure diagram is as follows: tau-shear strength of the membrane material; h-membrane thickness (cut); r-weakening the groove outer diameter; pc-limiting pressure (i.e. the pressure acting on the diaphragm). Therefore, the corresponding membrane thicknesses under different detection pressures can be obtained, as shown in table 1;
TABLE 1 statistical table for testing pressure and diaphragm thickness
| Ultimate pressure/MPa | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| Thickness of membrane/mm | 1.17 | 1.33 | 1.5 | 1.67 | 1.83 | 2.0 | 2.17 | 2.33 |
The specific implementation mode of the utility model is illustrated by taking the interlayer pressure-bearing performance detection of the double-pulse engine as an example (9 MPa). The diaphragm type pressure-bearing test device of the utility model has the outer diameter of 400mm and the height of 390mm, the top cover is connected with the container body through 9 buckles, the corresponding diaphragm specification is directly selected according to the design statistical table before the test, and the diaphragm thickness is 1.5 mm; in the test process, 100g of black powder is pre-buried in the ignition medicine box of the igniter, a pressure source is generated in the container, when the pressure in the container exceeds the pressure bearing limit of the diaphragm (9 MPa), the diaphragm is broken and opened, the pressure is released, and the pressure bearing limit of the diaphragm is the examination pressure value of a test piece, so that the examination purpose of the interlayer pressure bearing test is achieved;
the pressure vessel (1) and the top cover body (2) are made of 30CrMnSiA high-strength steel materials. The diaphragm (6) is made of Lc9 aluminum alloy material with high strength and low density. When the membrane (6) is machined, the machining size precision and the surface roughness Ra1.6 are ensured, so that the opening consistency is ensured;
details not described in the present specification belong to the prior art known to those skilled in the art.
Claims (4)
1. The utility model provides a diaphragm formula pressure-bearing test device which characterized in that: the ignition device is composed of a pressure container (1), a top cover body (2), an ignition medicine box (3), a sealing ring (4), a diaphragm support (5), a diaphragm (6), a thread pressure plate (7), an ignition hole support (8), an igniter (9), a pressure measuring hole support (10) and a pressure sensor (11), wherein the pressure container (1) is of a high-pressure container structure, and can be installed and detached by rotating through a 'pressure cooker' buckle connection structure with the top cover body (2); the sealing is ensured between the pressure container (1) and the top cover body (2) through a sealing ring (4); an ignition hole support (8) is designed outside the right center of the top cover body (2), a pressure measuring hole support (10) is designed outside the right side, a diaphragm support (5) is designed outside the left side, a diaphragm (6) which is a key component of the pressure-bearing test device is placed in the diaphragm support (5) and is connected with the diaphragm support (5) through a threaded pressure plate (7) for compressing the diaphragm (6); an igniter (9) is arranged on the inner side of the ignition hole support (8), an ignition medicine box (3) is designed in the center of the top cover body (2) and is connected with the top cover body (2) through threads; a pressure sensor (11) is arranged in the pressure measuring hole support (10); after the igniter (9) ignites the ignition medicine box (3), a pressure source can be generated, the expected pressure is controlled through the diaphragm (6) device, real-time pressure detection is obtained through the pressure sensor (11), and the pressure bearing performance of the paired components is examined after the three are used in combination.
2. The membrane pressure-bearing test device according to claim 1, characterized in that: the diaphragm (6) is of a circular flat plate structure, and a weakening groove is designed in the middle.
3. The membrane pressure-bearing test device according to claim 1, characterized in that: the buckle connection structure is formed by 8-10 buckles respectively processed along the circumference on the pressure container (1) and the top cover body (2).
4. The membrane pressure-bearing test device according to claim 1, characterized in that: black powder or equivalent BPN is preset in the ignition medicine box (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020039258.3U CN211668928U (en) | 2020-01-09 | 2020-01-09 | Diaphragm type pressure-bearing test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020039258.3U CN211668928U (en) | 2020-01-09 | 2020-01-09 | Diaphragm type pressure-bearing test device |
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| CN211668928U true CN211668928U (en) | 2020-10-13 |
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| CN202020039258.3U Active CN211668928U (en) | 2020-01-09 | 2020-01-09 | Diaphragm type pressure-bearing test device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113305214A (en) * | 2021-05-31 | 2021-08-27 | 四川航天长征装备制造有限公司 | Die for processing weakening groove of plugging part |
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2020
- 2020-01-09 CN CN202020039258.3U patent/CN211668928U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113305214A (en) * | 2021-05-31 | 2021-08-27 | 四川航天长征装备制造有限公司 | Die for processing weakening groove of plugging part |
| CN113305214B (en) * | 2021-05-31 | 2022-11-29 | 四川航天长征装备制造有限公司 | Die for processing weakening groove of plugging part |
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