CN218524282U - Ignition pressure testing arrangement with adjustable volume - Google Patents
Ignition pressure testing arrangement with adjustable volume Download PDFInfo
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- CN218524282U CN218524282U CN202222118387.3U CN202222118387U CN218524282U CN 218524282 U CN218524282 U CN 218524282U CN 202222118387 U CN202222118387 U CN 202222118387U CN 218524282 U CN218524282 U CN 218524282U
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Abstract
The utility model discloses a volume adjustable ignition pressure testing device, which comprises a pressure measuring cylinder, a sealing cover, a piston body, a sensor connecting sleeve and an igniter; the front end of the pressure measuring cylinder is in threaded connection with the sealing cover, the thread section of the rear section of the piston body is in threaded connection with the rear end of the pressure measuring cylinder, the side wall of the piston head of the front section of the piston body is in sealed connection with the inner wall of the pressure measuring cylinder, the rear end of the inner hole of the piston body is fixedly provided with a connecting plate through a bolt, a pressure measuring hole is formed in the connecting plate, a sensor connecting sleeve with a threaded hole is fixedly arranged at the pressure measuring hole on the rear side plate surface of the connecting plate, a pressure sensor is fixedly threaded in the threaded hole of the sensor connecting sleeve, the front side plate surface of the connecting plate is fixedly provided with the igniter, and a firing wire of the igniter is led out of the sealing cover. The utility model discloses an ignition pressure test device can adjust the volume of test cavity as required.
Description
Technical Field
The utility model relates to an ignition pressure test device with adjustable volume belongs to solid rocket engine pressure test technical field.
Background
The initial free volume of a solid rocket engine is a relatively important parameter, and in a certain degree, the initial free volume and the critical ignition pressure of a propellant are key parameters for determining the ignition charge. After the igniter is designed, the ignition pressure needs to be tested for many times, whether the requirement of indexes is met or not is rechecked, and a corresponding testing device is needed; the charging inner molded surface of the engine is continuously optimized in the design process, so that the initial free volume fluctuates within a certain range, and a testing device is required to be correspondingly adjusted; moreover, under the condition that the igniter products in the same series are universal in mechanical interfaces and the like, the pressure test can be carried out on the adjustable test device according to the matched free volume.
The volume can be finely adjusted in the ignition pressure testing process, so that the requirement of optimizing the performance of the engine can be met, the early-stage testing requirement of the similar igniter design can also be met, and the generalization is realized.
SUMMERY OF THE UTILITY MODEL
The utility model discloses a solve traditional some firearm pressure measurement device a great variety, exclusive use, volume and be difficult to the adjustment scheduling problem, provide an ignition pressure test device with adjustable volume.
The utility model aims at realizing through the following technical scheme:
the utility model relates to a volume-adjustable ignition pressure testing device, which comprises a pressure measuring cylinder, a sealing cover, a piston body, a sensor connecting sleeve and an igniter;
the pressure measuring cylinder is a cylindrical part with openings at two ends, and connecting threads are processed on the inner walls of the openings at two ends of the pressure measuring cylinder;
the front section of the piston body is a cylindrical piston head with the outer diameter matched with the inner diameter of the pressure measuring cylinder, a groove is formed in the side wall of the piston head and is connected with a sealing ring, the rear section of the piston body is a threaded section matched with an internal thread at the rear end of the pressure measuring cylinder, and the middle part of the piston body is axially provided with an air hole;
the front end of the pressure measuring cylinder is in threaded connection with the sealing cover, the thread section of the rear section of the piston body is in threaded connection with the rear end of the pressure measuring cylinder, the side wall of the piston head of the front section of the piston body is in sealed connection with the inner wall of the pressure measuring cylinder, the rear end of the inner hole of the piston body is fixedly connected with the connecting plate through a bolt, a pressure measuring hole is formed in the connecting plate, a sensor connecting sleeve with a threaded hole is fixedly arranged at the pressure measuring hole on the rear side plate surface of the connecting plate, a pressure sensor is fixedly threaded in the threaded hole of the sensor connecting sleeve, the igniter is fixedly arranged on the front side plate surface of the connecting plate, and a firing line of the igniter is led out from the sealing cover.
The front end of the piston body is connected with a handle, and the piston body is rotated through the handle.
And a sealing ring is arranged on the butt joint surface of the connecting plate and the piston body.
Working process
When the ignition pressure test is carried out, the piston body is rotated through the handle, the axial position of the piston body in the inner cavity of the pressure measuring cylinder is adjusted, and therefore the volume of the test cavity is adjusted. And controlling the igniter to fire, generating a large amount of high-temperature gas in the inner cavity of the pressure measuring cylinder by the igniter, and acquiring pressure data of the testing cavity in real time by the pressure sensor.
Has the advantages that:
the utility model discloses an ignition pressure test device, simple structure, convenient operation can adjust the volume of test cavity as required, has improved the testing arrangement commonality, has important popularization and application and worth.
Drawings
Fig. 1 is a schematic structural diagram of the ignition pressure testing device of the present invention;
1-a handle; 2-a pressure detector; 3-a bolt; 4-connecting plates; 5-a piston body; 6-sealing ring; 7-a pressure measuring cylinder; 8-sealing cover.
Detailed Description
The invention will be further described with reference to the following drawings and examples:
examples
As shown in fig. 1, the ignition pressure testing device with adjustable volume of the present invention comprises a pressure measuring cylinder 7, a sealing cover 8, a piston body 5, a sensor connecting sleeve 2 and an igniter;
the pressure measuring cylinder 7 is a cylindrical part with openings at two ends, and connecting threads are machined on the inner walls of the openings at two ends of the pressure measuring cylinder 7;
the front section of the piston body 5 is a cylindrical piston head with the outer diameter matched with the inner diameter of the pressure measuring cylinder 7, a side wall of the piston head is provided with a groove and connected with a sealing ring 6, the rear section of the piston body 5 is a thread section matched with the internal thread at the rear end of the pressure measuring cylinder 7, and the middle part of the piston body 5 is provided with an air hole in the axial direction;
the front end of the pressure measuring cylinder 7 is in threaded connection with the sealing cover 8, the threaded section of the rear section of the piston body 5 is in threaded connection with the rear end of the pressure measuring cylinder 7, the side wall of the piston head of the front section of the piston body 5 is in sealed connection with the inner wall of the pressure measuring cylinder 7, the rear end of the inner hole of the piston body 5 is fixedly connected with the connecting plate 4 through the bolt 3, the connecting plate 4 is provided with a pressure measuring hole, the pressure measuring hole of the rear side plate surface of the connecting plate 4 is fixedly provided with the sensor connecting sleeve 2 with a threaded hole, the pressure sensor is fixed in the threaded hole of the sensor connecting sleeve 2 in a threaded manner, the front side plate surface of the connecting plate 4 is fixedly provided with the igniter, and the ignition wire of the igniter is led out from the sealing cover 8.
The front end of the piston body 5 is connected with a handle 1, and the piston body 5 is rotated through the handle 1.
And a sealing ring is arranged on the butt joint surface of the connecting plate 4 and the piston body 5.
When the ignition pressure test is carried out, the piston body 5 is rotated through the handle 1, the axial position of the piston body 5 in the inner cavity of the pressure measuring cylinder 7 is adjusted, and therefore the volume of the test cavity is adjusted. The igniter is controlled to fire, the igniter generates a large amount of high-temperature gas in the inner cavity of the pressure measuring cylinder 7, and the pressure sensor acquires pressure data of the testing cavity in real time.
Claims (3)
1. The volume-adjustable ignition pressure testing device is characterized in that: comprises a pressure measuring cylinder, a sealing cover, a piston body, a sensor connecting sleeve and an igniter;
the pressure measuring cylinder is a cylindrical part with openings at two ends, and connecting threads are processed on the inner walls of the openings at two ends of the pressure measuring cylinder;
the front section of the piston body is a cylindrical piston head with the outer diameter matched with the inner diameter of the pressure measuring cylinder, a groove is formed in the side wall of the piston head and is connected with a sealing ring, the rear section of the piston body is a threaded section matched with an internal thread at the rear end of the pressure measuring cylinder, and the middle part of the piston body is axially provided with an air hole;
the front end of the pressure measuring cylinder is in threaded connection with the sealing cover, the thread section of the rear section of the piston body is in threaded connection with the rear end of the pressure measuring cylinder, the side wall of the piston head of the front section of the piston body is in sealed connection with the inner wall of the pressure measuring cylinder, the rear end of the inner hole of the piston body is fixedly provided with a connecting plate through a bolt, a pressure measuring hole is formed in the connecting plate, a sensor connecting sleeve with a threaded hole is fixedly arranged at the pressure measuring hole on the rear side plate surface of the connecting plate, a pressure sensor is fixedly threaded in the threaded hole of the sensor connecting sleeve, the front side plate surface of the connecting plate is fixedly provided with the igniter, and a firing wire of the igniter is led out of the sealing cover.
2. The ignition pressure test device with adjustable volume as claimed in claim 1, wherein: the front end of the piston body is connected with a handle, and the piston body is rotated through the handle.
3. A volume-adjustable ignition pressure testing apparatus according to claim 1 or 2, wherein: and a sealing ring is arranged on the butt joint surface of the connecting plate and the piston body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222118387.3U CN218524282U (en) | 2022-08-11 | 2022-08-11 | Ignition pressure testing arrangement with adjustable volume |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222118387.3U CN218524282U (en) | 2022-08-11 | 2022-08-11 | Ignition pressure testing arrangement with adjustable volume |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218524282U true CN218524282U (en) | 2023-02-24 |
Family
ID=85241927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222118387.3U Active CN218524282U (en) | 2022-08-11 | 2022-08-11 | Ignition pressure testing arrangement with adjustable volume |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218524282U (en) |
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2022
- 2022-08-11 CN CN202222118387.3U patent/CN218524282U/en active Active
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