Device for measuring acting pressure of thin-walled tubular initiating explosive device

Abstract

The utility model discloses a thin-walled tubular initiating explosive device acting pressure measuring device which is arranged on a thin-walled tubular initiating explosive device and comprises a sliding female head, the sliding female head is provided with a cavity, a sliding male head is arranged in the cavity of the sliding female head, the sliding male head is connected with a hollow bolt, the hollow bolt extends out of the sliding female head, and the hollow bolt is in threaded connection with the sliding female head. A pressure sensor is arranged in the sliding male head, semi-cylindrical surface grooves are formed in the contact bottom faces of the sliding female head and the sliding male head respectively, and when the sliding male head slides to the bottom of the interaction wood to make contact with the sliding female head, the semi-cylindrical surfaces of the two grooves are connected to form a complete cylindrical surface. And a communicated thin hole is formed between the surface of the semi-cylindrical surface groove of the sliding male head and the pressure sensor. According to the utility model, the change of the inner cavity pressure when the initiating explosive device acts can be tested, and the problem that the acting pressure of the thin-walled tubular initiating explosive device is difficult to measure is solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of pyrotechnic testing devices and relates to a thin-walled tubular pyrotechnic action pressure measuring device. Background Art

[0002] The inner cavity pressure of thin-walled tubular pyrotechnics is a direct reference to the working performance of the pyrotechnics. Since thin-walled tubular pyrotechnics have the characteristics of thin walls that cannot be subjected to point pressure, the acting pressure is sensitive to the inner cavity volume, and the explosion of gunpowder has a large pressure shock, there is currently no device for measuring the acting pressure of thin-walled tubular pyrotechnics. Therefore, in order to accurately measure the inner cavity pressure of thin-walled tubular pyrotechnics when they are acting, a corresponding measuring device is designed and developed. Utility Model Content

[0003] The utility model aims to provide a device for measuring the action pressure of thin-walled tubular pyrotechnics, which can measure the change of the inner cavity pressure when the pyrotechnics act, and solves the problem that the action pressure of thin-walled tubular pyrotechnics is difficult to measure.

[0004] The technical solution adopted by the utility model is that a device for measuring the pressure of a thin-walled tubular pyrotechnic product is arranged on the thin-walled tubular pyrotechnic product, comprising a sliding female head, the sliding female head having a cavity, a sliding male head being arranged in the cavity of the sliding female head, the sliding male head being connected with a hollow bolt, the hollow bolt extending out of the sliding female head, and the hollow bolt being threadedly connected to the sliding female head, a pressure sensor being arranged in the sliding male head, semi-cylindrical grooves being arranged on the contact bottom surfaces of the sliding female head and the sliding male head, when the sliding male head slides to the bottom of the interactive wood and contacts the sliding female head, the semi-cylindrical surfaces of the two grooves are joined into a complete cylindrical surface, and a communicating fine hole is provided between the surface of the semi-cylindrical groove of the sliding male head and the pressure sensor.

[0005] The utility model is also characterized in that:

[0006] The sliding female head is provided with an alignment pin, and the sliding male head is provided with a matching groove at a position corresponding to the alignment pin.

[0007] The semi-cylindrical groove surfaces of the sliding female head and the sliding male head are both provided with elastic sealing pads, and the elastic sealing pads on the sliding male head expose fine holes.

[0008] The surfaces of the semi-cylindrical grooves of the sliding female head and the sliding male head are polished surfaces.

[0009] The contact sides of the sliding female head and the sliding male head are both polished surfaces.

[0010] The sliding male head is provided with a plurality of alignment arrows, the direction indicated by the alignment arrows is the direction in which the sliding male head is pushed, and the alignment arrows correspond to the positions of the pressure test holes of the thin-walled tubular pyrotechnic products.

[0011] The beneficial effects of the utility model are:

[0012] The utility model discloses a device for measuring the action pressure of thin-walled tubular pyrotechnics, which pushes a sliding male head through a hollow bolt, and cooperates with a sliding female head to closely fit the outer wall of the product to be measured; the complete cylindrical surface formed by the cooperation of the sliding female head and the two semi-cylindrical grooves of the sliding male head fits the outer wall of the product to be measured, thus avoiding deformation of the tube body caused by local point pressure on the thin-walled tube; when the product is fitted and installed, the sliding male head aligns with the arrow, which ensures the unobstructed flow of the product pressure test hole and the sensor hole, thus solving the problem that the current action pressure of thin-walled tubular pyrotechnics is difficult to measure. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure of the thin-walled tubular pyrotechnic device for measuring the pressure of the pyrotechnic device of the utility model;

[0014] Figure 2 The utility model is a schematic diagram of the cross-sectional structure of a device for measuring the pressure of a thin-walled tubular explosive device.

[0015] In the figure, 1. sliding female head, 2. sliding male head, 3. elastic sealing gasket, 4. pressure sensor, 5. hollow bolt, 6. fine hole, 7. aligning arrow. DETAILED DESCRIPTION

[0016] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0017] Example 1

[0018] The present embodiment provides a thin-walled tubular pyrotechnic pressure measuring device, which is arranged on the thin-walled tubular pyrotechnic device. The entire device is made of high-strength steel and includes a sliding female head 1. The sliding female head 1 has a cavity. A sliding male head 2 is arranged in the cavity of the sliding female head 1. The sliding male head 2 is connected with a hollow bolt 5. The hollow bolt 5 and the sliding male head 2 are connected by a groove, that is, the hollow bolt 5 cooperates with the groove opened on the back of the sliding male head 2. The hollow bolt 5 extends out of the sliding female head 1, and the hollow bolt 5 is threadedly connected to the sliding female head 1. By rotating the hollow bolt 5, the hollow bolt 5 can push the sliding male head 2 to slide in the cavity of the sliding female head 1, and can push the sliding male head to advance infinitely to achieve infinite adjustment. A pressure sensor 4 is arranged in the sliding male head 2. The contact bottom surfaces of the sliding female head 1 and the sliding male head 2 are respectively provided with semi-cylindrical grooves. When the sliding male head 2 slides to the bottom of the interactive wood and contacts the sliding female head 1, the semi-cylindrical surfaces of the two grooves are connected to form a complete cylindrical surface, and a connecting fine hole 6 is opened between the surface of the semi-cylindrical groove of the sliding male head 2 and the pressure sensor 4.

[0019] Example 2

[0020] The present embodiment provides a thin-walled tubular pyrotechnic pressure measuring device, including a sliding female head 1, the sliding female head 1 having a cavity, a sliding male head 2 being arranged in the cavity of the sliding female head 1, the sliding male head 2 being connected with a hollow bolt 5, the hollow bolt 5 being connected with the sliding male head 2 by a groove, that is, the hollow bolt 5 is matched with the groove opened on the back of the sliding male head 2, the hollow bolt 5 extends out of the sliding female head 1, and the hollow bolt 5 is threadedly connected with the sliding female head 1, and the hollow bolt 5 is rotated to enable the hollow bolt 5 to push the sliding male head 2 to slide in the cavity of the sliding female head 1, and the sliding male head 2 A pressure sensor 4 is arranged inside, and a semi-cylindrical groove is arranged on the contact bottom surface of the sliding female head 1 and the sliding male head 2. When the sliding male head 2 slides to the bottom of the interactive wood and contacts the sliding female head 1, the semi-cylindrical surfaces of the two grooves are connected to form a complete cylindrical surface, and a communicating fine hole 6 is opened between the surface of the semi-cylindrical groove of the sliding male head 2 and the pressure sensor 4. On the basis of Example 1, the sliding female head 1 is provided with an alignment pin, and a matching groove is arranged on the sliding male head 2 at a position corresponding to the alignment pin, so as to facilitate the alignment of the semi-cylindrical grooves of the sliding female head 1 and the sliding male head 2.

[0021] Example 3

[0022] The present embodiment provides a device for measuring the pressure of a thin-walled tubular pyrotechnic device, including a sliding female head 1, the sliding female head 1 having a cavity, a sliding male head 2 being arranged in the cavity of the sliding female head 1, the sliding male head 2 being connected with a hollow bolt 5, the hollow bolt 5 being connected to the sliding male head 2 by a groove, that is, the hollow bolt 5 is matched with a groove opened on the back of the sliding male head 2, the hollow bolt 5 extends out of the sliding female head 1, and the hollow bolt 5 is threadedly connected to the sliding female head 1, and the hollow bolt 5 can be rotated to push the sliding male head 2 to slide in the cavity of the sliding female head 1, a pressure sensor 4 is arranged in the sliding male head 2, and the contact bottom surfaces of the sliding female head 1 and the sliding male head 2 are each provided with a semi-cylindrical surface Groove, when the sliding male head 2 slides to the bottom of the interactive wood and contacts the sliding female head 1, the semi-cylindrical surfaces of the two grooves are combined into a complete cylindrical surface, and a connecting fine hole 6 is opened between the semi-cylindrical groove surface of the sliding male head 2 and the pressure sensor 4, and the sliding female head 1 is provided with an alignment pin, and a matching groove is provided on the sliding male head 2 at a position corresponding to the alignment pin, so as to facilitate the alignment of the semi-cylindrical grooves of the sliding female head 1 and the sliding male head 2. On the basis of Examples 1-2, the semi-cylindrical groove surfaces of the sliding female head 1 and the sliding male head 2 are both provided with elastic sealing pads 3, and the elastic sealing pads 3 on the sliding male head 2 expose the fine hole 6, and the elastic sealing pads 3 can be replaced to achieve repeated use.

[0023] The semi-cylindrical groove surfaces of the sliding female head 1 and the sliding male head 2 are polished surfaces; the contact side surfaces of the sliding female head 1 and the sliding male head 2 are both polished surfaces.

[0024] Example 4

[0025] The present embodiment provides a device for measuring the pressure of a thin-walled tubular pyrotechnic product, including a sliding female head 1, the sliding female head 1 having a cavity, a sliding male head 2 being arranged in the cavity of the sliding female head 1, the sliding male head 2 being connected with a hollow bolt 5, the hollow bolt 5 being connected to the sliding male head 2 by a groove, that is, the hollow bolt 5 is matched with a groove opened on the back of the sliding male head 2, the hollow bolt 5 extends out of the sliding female head 1, and the hollow bolt 5 is threadedly connected to the sliding female head 1, and the hollow bolt 5 is rotated to make the hollow bolt 5 push the sliding male head 2 to slide in the cavity of the sliding female head 1, a pressure sensor 4 is arranged in the sliding male head 2, and the contact bottom surfaces of the sliding female head 1 and the sliding male head 2 are respectively provided with semi-cylindrical grooves, and when the sliding male head 2 slides to the bottom of the interactive wood and contacts the sliding female head 1, the semi-cylindrical grooves of the two grooves The surfaces are joined to form a complete cylindrical surface, a connected fine hole 6 is opened between the surface of the semi-cylindrical groove of the sliding male head 2 and the pressure sensor 4, the sliding female head 1 is provided with an alignment pin, and a matching groove is provided on the sliding male head 2 at a position corresponding to the alignment pin, so as to facilitate the alignment of the semi-cylindrical grooves of the sliding female head 1 and the sliding male head 2, and elastic sealing pads 3 are provided on the semi-cylindrical groove surfaces of the sliding female head 1 and the sliding male head 2. On the basis of Examples 1-3, alignment arrows 7 are provided on all four sides of the sliding male head 2, and the direction indicated by the alignment arrow 7 is the direction in which the sliding male head 2 is pushed. The alignment arrow 7 corresponds to the position of the pressure test hole of the thin-walled tubular pyrotechnic product. During the pressure test, the pressure test hole of the thin-walled tubular pyrotechnic product is aligned with the fine hole 6 on the surface of the semi-cylindrical groove of the sliding male head 2.

[0026] The pressure measurement process of the utility model thin-walled tubular pyrotechnics action pressure measuring device is as follows:

[0027] During the test, the sensor 4 is screwed into the corresponding installation position in the sliding male head 2, and the outer wall of the product to be tested, the elastic sealing gasket 3, and the sliding male head 2 are combined. The pressure test hole of the product is aligned with the alignment arrow of the sliding male head 2, and the pressure test hole is aligned with the fine hole 6 on the cylindrical surface of the sliding male head 2. The hollow bolt 5 is turned to push the sliding male head 2 so that the semi-cylindrical groove of the sliding female head 1 is engaged with the semi-cylindrical groove of the sliding male head 2, and the outer tube wall of the product to be tested is tightly held. When the thin-walled tubular pyrotechnic product is acted on, the pressure formed in the cavity is transmitted to the sensor 5 through the fine hole 6 of the sliding male head 2. The sensor 5 collects pressure data to realize pressure measurement, which is simple and efficient.

[0028] From the above content, it can be known that the device for measuring the action pressure of thin-walled tubular pyrotechnics of the utility model can measure the change of the inner cavity pressure when the pyrotechnics are acting, thus solving the problem that the action pressure of thin-walled tubular pyrotechnics is difficult to measure.

Claims

1. A device for measuring the pressure of a thin-walled tubular explosive device, arranged on the thin-walled tubular explosive device, characterized in that: The invention comprises a sliding female head (1), wherein the sliding female head (1) has a cavity, a sliding male head (2) is arranged in the cavity of the sliding female head (1), the sliding male head (2) is connected with a hollow bolt (5), the hollow bolt (5) extends out of the sliding female head (1), and the hollow bolt (5) is threadedly connected to the sliding female head (1), a pressure sensor (4) is arranged in the sliding male head (2), and the contact bottom surfaces of the sliding female head (1) and the sliding male head (2) are respectively provided with a semi-cylindrical groove, when the sliding male head (2) slides to the bottom of the interactive wood and contacts the sliding female head (1), the semi-cylindrical surfaces of the two grooves are connected to form a complete cylindrical surface, and a communicating fine hole (6) is opened between the surface of the semi-cylindrical groove of the sliding male head (2) and the pressure sensor (4).

2. The thin-walled tubular explosive device pressure measuring device according to claim 1, characterized in that: The sliding female head (1) is provided with an alignment pin, and the sliding male head (2) is provided with a matching groove at a position corresponding to the alignment pin.

3. The thin-walled tubular explosive device pressure measuring device according to claim 1, characterized in that: The semi-cylindrical groove surfaces of the sliding female head (1) and the sliding male head (2) are both provided with elastic sealing pads (3), and the elastic sealing pads (3) on the sliding male head (2) expose fine holes (6).

4. The thin-walled tubular explosive device pressure measuring device according to claim 1, characterized in that: The surfaces of the semi-cylindrical grooves of the sliding female head (1) and the sliding male head (2) are polished surfaces.

5. The thin-walled tubular explosive device pressure measuring device according to claim 1, characterized in that: The contact side surfaces of the sliding female head (1) and the sliding male head (2) are both polished surfaces.

6. The thin-walled tubular explosive device pressure measuring device according to claim 5, characterized in that: The sliding male head (2) is provided with a plurality of alignment arrows (7), the direction indicated by the alignment arrows (7) is the direction in which the sliding male head (2) is pushed, and the alignment arrows (7) correspond to the positions of the pressure test holes of the thin-walled tubular pyrotechnic product.

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