Booster igniter capable of measuring pressure

Abstract

The utility model relates to a booster igniter capable of measuring pressure. The booster igniter comprises an ignition tube 1, a connecting seat 3, an ignition powder box 4 and ignition powder 5, the booster pressure measuring holes are formed in the igniter, so that the igniter meets the ignition performance of the booster, and meanwhile, the product serialization and generalization degree of the booster is improved. According to the booster ignition device, the working pressure in the booster can be detected while the booster is ignited, the characteristics of generalization and serialization of the igniter are fully played, the booster ignition device adapts to various boosters to the maximum extent, the design states of key structural parts such as a booster shell and a spray pipe are reduced, and the development risk is reduced.

Description

Technical Field

[0001] This utility model relates to the field of rocket ignition technology and provides a pressure-measurable booster igniter. Background Technology

[0002] The igniter is the starting device for booster operation. An igniter typically consists of an ignition tube, an ignition cartridge (containing ignition propellant), and a connector. As the booster's ignition mechanism, the igniter requires customized design depending on the aircraft and its launch conditions. However, the mechanical interface between the igniter and the booster can often be standardized. Typically, booster pressure monitoring is required during ground ignition tests. The conventional pressure monitoring location needs adjustment based on the booster casing, propellant charge, and nozzle design. However, boosters delivered for flight do not require pressure testing. The original pressure testing port could cause manufacturing difficulties and additional risks during flight testing. In other words, the standardization and universality of the original pressure testing scheme need improvement. To enhance product standardization and universality, placing the booster pressure testing port on the igniter effectively solves these problems. Utility Model Content

[0003] The purpose of this invention is to arrange the booster pressure measurement hole on the igniter, thereby improving the serialization and versatility of the booster by utilizing the serialization and versatility of the igniter.

[0004] The technical solution of this utility model is:

[0005] This utility model proposes a pressure-measuring booster igniter, including an ignition tube 1, a connecting seat 3, an ignition powder box 4, and an ignition powder 5;

[0006] The ignition tube 1 is connected to the connector 3 via a thread;

[0007] The ignition powder box 4 is connected to the connecting seat 3 by threads or adhesive;

[0008] The ignition powder 5 is loaded into the ignition powder box 4;

[0009] A pressure measuring hole is opened on the connecting seat 3 along the flight direction, and a pressure sensor 2 is fixed in the pressure measuring hole;

[0010] The connecting seat 3 can be adapted and fixedly connected to the front end of the booster. The connecting seat 3 and the front end are sealed together, and after the connection is in place, the ignition box is located inside the booster combustion chamber.

[0011] Furthermore, the pressure sensor 2 is fixed in the pressure measuring hole by threads.

[0012] Furthermore, the connecting seat 3 is connected to the front end cap of the booster via threads.

[0013] Furthermore, an O-ring seal is used between the connecting seat 3 and the front end cap.

[0014] Furthermore, the connecting seat 3 is made of high-strength steel, and when the booster operates for a long time, the side of the connecting seat 3 near the ignition box should be insulated for heat protection.

[0015] Furthermore, there are two ignition tubes 1, and the two ignition tubes 1 and the pressure sensor 2 are arranged in a triangular configuration along the axial direction. The ignition tubes 1 and the pressure sensor 2 must maintain a sufficient safe distance while ensuring the ignition performance of the ignition tubes 1 and the pressure measurement function and performance of the pressure sensor.

[0016] Furthermore, ignition tube 1 consists of two single-bridge ignition tubes.

[0017] Furthermore, the ignition propellant 3 uses standard annular, granular, or flake-shaped ignition propellant. The amount of ignition propellant is calculated based on the initial free volume of the booster and the ignition pressure requirements, and the amount of ignition propellant is adjusted by increasing the number of standard ignition propellant particles.

[0018] Furthermore, the ignition box has multiple vent holes (6 rings).

[0019] The advantages of this utility model are: it can detect the working pressure inside the booster while igniting the booster, and it fully utilizes the universal and serialized characteristics of the igniter to adapt to various boosters to the greatest extent, reducing the design requirements of key structural components such as the booster shell and nozzle, and reducing development risks. Attached Figure Description

[0020] Figure 1 This is the front view of the present invention;

[0021] Figure 2 This is the right view of the present invention;

[0022] Figure 3 This is the front view of the gunpowder box;

[0023] Figure 4 This is a left view of the gunpowder box;

[0024] The components include: 1. Ignition tube; 2. Pressure sensor; 3. Connector; 4. Ignition powder box; 5. Ignition powder; 6. Exhaust port. Detailed Implementation

[0025] The disclosed examples will be described more fully with reference to the accompanying drawings, in which some (but not all) of the disclosed examples are shown. In fact, many different examples may be described, and these examples should not be construed as limited to those set forth herein. Rather, these examples are described so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art.

[0026] A pressure-measuring booster igniter is provided, comprising an ignition tube 1, a connecting seat 3, an ignition powder box 4, and an ignition powder 5;

[0027] The ignition tube 1 is connected to the connector 3 via a thread;

[0028] The ignition powder box 4 is connected to the connecting seat 3 by threads or adhesive;

[0029] The ignition powder 5 is loaded into the ignition powder box 4;

[0030] A pressure measuring hole is opened on the connecting seat 3 along the flight direction, and a pressure sensor 2 is fixed in the pressure measuring hole;

[0031] The connecting seat 3 can be adapted and fixedly connected to the front end of the booster. The connecting seat 3 and the front end are sealed together, and after the connection is in place, the ignition box is located inside the booster combustion chamber.

[0032] The pressure sensor 2 is fixed in the pressure measuring hole by threads.

[0033] The connecting seat 3 is connected to the front end cap of the booster via threads.

[0034] The connection seat 3 and the front end cap are sealed with an O-ring.

[0035] The connecting seat 3 is made of high-strength steel. When the booster operates for a long time, the side of the connecting seat 3 near the ignition box should be insulated for heat protection.

[0036] The number of ignition tubes 1 is two, and the two ignition tubes 1 and the pressure sensor 2 are arranged in a triangular configuration along the axial direction. The ignition tubes 1 and the pressure sensor 2 must be kept at a sufficient safe distance while ensuring the ignition performance of the ignition tubes 1 and the pressure measurement function and performance of the pressure sensor.

[0037] Ignition tube 1 consists of two single-bridge ignition tubes.

[0038] As shown in the figure, the ignition box 4 is an embodiment of the present invention.

[0039] The ignition box 4 is made of easily ablated materials such as aluminum alloy and celluloid. The wall thickness of the box is linearly variable along the axial direction, with the thickest wall near the connecting seat 3. The ignition box 4 has multiple vent holes 6. The number and area of ​​the vent holes are related to the amount of ignition powder, ignition pressure, and duration.

[0040] Descriptions of various advantageous arrangements have been shown for illustrative and descriptive purposes, but such descriptions are not intended to be exclusive or limited to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. Furthermore, different advantageous examples may describe different advantages compared to other advantageous examples. One or more examples have been selected and described in order to best illustrate the principles and practical application of the examples, and to enable those skilled in the art to understand that this disclosure contains various examples with various modifications suitable for the particular intended use.

Claims

1. A pressure-measuring booster igniter, characterized in that: It includes an ignition tube (1), a connecting seat (3), an ignition powder box (4), and ignition powder (5); The firing pin is connected to the connector via threads; The ignition cartridge is connected to the connector by threads or adhesive. The ignition powder is loaded into the ignition powder box; A pressure measuring hole is opened on the connecting seat along the flight direction, and a pressure sensor is fixed in the pressure measuring hole; The connector can be fitted and fixedly connected to the front end of the solid rocket motor. The connector and the front end are sealed together, and after the connection is in place, the ignition box is located inside the booster combustion chamber. The pressure sensor is fixed in the pressure measuring hole by threads; The connecting seat is connected to the front end cap of the booster via threads; The number of ignition tubes is two, and the two ignition tubes and the pressure sensor are arranged in a triangular configuration along the axial direction.

2. The pressure-measuring booster igniter as described in claim 1, characterized in that: The connection seat and the front end cap are sealed with an O-ring.

3. The pressure-measuring booster igniter as described in claim 1, characterized in that: The connector is made of high-strength steel.

4. A pressure-measuring booster igniter as described in claim 1, characterized in that: The ignition tubes are two single-bridge ignition tubes.

5. A pressure-measuring booster igniter as described in claim 1, characterized in that: The ignition propellant used is a standard ring-shaped, granular, or flake-shaped ignition propellant.

6. A pressure-measuring booster igniter as described in claim 1, characterized in that: The ignition box has multiple vent holes (6).

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