CN115824476A

CN115824476A - Pressure release detection device for firework and firecracker propellant firing

Info

Publication number: CN115824476A
Application number: CN202211350201.5A
Authority: CN
Inventors: 王庆云; 张璐; 张光明; 高勇波; 张泰健; 陈玥; 尹为国; 张济水
Original assignee: Hunan Provincial Safety And Quality Inspection Center For Fireworks And Fireworks
Current assignee: Hunan Provincial Safety And Quality Inspection Center For Fireworks And Fireworks
Priority date: 2022-10-31
Filing date: 2022-10-31
Publication date: 2023-03-21

Abstract

The invention discloses a pressure release detection device for combustion of firework and firecracker propellant powder, which comprises a base, a force transducer, a transmitting tube and a detection table, wherein the force transducer is arranged on the base, the detection table is arranged above the force transducer, a lead wire through hole is formed in the side wall of the transmitting tube, a convex brim is arranged at the bottom of the transmitting tube, a groove embedded into the convex brim is formed in the detection table, a cover plate is arranged above the groove, a strip-shaped hole is formed in the cover plate, the diameter of one end of the strip-shaped hole is the same as the outer diameter of the transmitting tube, and the diameter of the other end of the strip-shaped hole is the same as the outer diameter of the convex brim. The invention provides a pressure-releasing pressure detection device for burning of fireworks and crackers propellant powder, which is used for igniting the propellant powder after the propellant powder is placed in a launching tube and carrying out force measurement, is simple and convenient to operate, is safe and reliable, is low in cost, and can effectively reduce subjective errors and errors caused by an external wind power environment by detection through a force measurement sensor.

Description

Pressure release detection device for firework and firecracker propellant firing

Technical Field

The invention relates to the technical field of firework and firecracker detection, in particular to a device for detecting pressure release of firework and firecracker propellant during combustion.

Background

The propellant in the fireworks and crackers is one of the most widely used and important raw materials for the fireworks and crackers, and the most important products in the industry, such as combined fireworks, display shells, spray flowers, small fireworks, spitting beads and the like, need a large amount of propellant. The index of the pressure release in the propellant powder combustion process is closely related to the quality detection items of the setting-off performance of the firework product, and the quality safety of the setting-off performance is closely related to the personal safety of consumers. The production enterprise detects the burning pressure release size of propellant powder by oneself, carries out the simulation test through the distance of transmission iron prop usually, and the data is inaccurate, and is very dangerous moreover. The test methods of the acting force of the black powder for military industry are the lead method, the ballistic pendulum method, the metal sheet method and the like, but the methods have the disadvantages of expensive and large equipment, large detection field, high requirement on use conditions and complex operation. Therefore, a detection method and a detection device which are applicable to the industry and have the advantages of scientific and accurate data, simple and convenient operation, safety, reliability and lower cost are urgently needed to be developed.

Disclosure of Invention

In view of the prior art, the invention provides a pressure release detection device for firework and firecracker propellant burning, which is simple and convenient to operate, safe, reliable and low in cost, can ignite and measure force after the propellant is placed in a launching tube, and can effectively reduce subjective errors and errors caused by an external wind environment when a force measuring sensor is used for detection.

The technical scheme of the invention is realized as follows:

the utility model provides a fireworks and crackers propellant powder burning pressure release detection device, includes base, force cell sensor, launching tube and detects the platform, force cell sensor locates on the base, the force cell sensor top is equipped with detect the platform, the lateral wall of launching tube is equipped with the lead wire and wears to portal, and the bottom of launching tube is equipped with protruding eaves, it is equipped with the embedding to detect the platform protruding eaves's recess, the recess top is equipped with the apron, the apron is equipped with the bar hole, the diameter of the one end in bar hole with the external diameter of launching tube is the same, and the diameter of the other end is the same with the external diameter of protruding eaves.

Furthermore, positioning holes are formed in the periphery of the cover plate, positioning screw holes are formed in the detection platform, bolts are arranged on the periphery of the cover plate, and the bolts penetrate through the positioning holes and are connected with the positioning screw holes.

Furthermore, an igniter is arranged on the detection table, the igniter and the force measuring sensor are in signal connection with a control box, and the control box is in signal connection with a display and an operation panel.

Furthermore, testing platform is equipped with the spirit level, the base is equipped with adjustable supporting leg.

Further, the load cell is a balance beam type pressure sensor.

Furthermore, the adjustable supporting leg comprises an adjusting mechanism and supporting legs, the adjusting mechanism comprises a gravity swing part, poking pieces, a transmission mechanism and limiting teeth, the upper part of the gravity swing part is connected with a base through a universal joint, the four poking pieces are arranged on the periphery of the gravity swing part and enclose a square, when the base is in a horizontal natural state, the poking pieces are tangent to the gravity swing part, the supporting legs are in threaded connection with the base, the three supporting legs are uniformly distributed on the circumference with the gravity swing part as the center, the first supporting leg is positioned on the perpendicular bisector of the first poking piece, the first supporting leg and the second supporting leg are provided with limiting tooth sockets, the limiting teeth are connected to the base in a sliding manner, the first poking piece and the poking piece opposite to the first poking piece are connected with the limiting teeth at the first supporting leg through the transmission mechanism, and the poking piece adjacent to the first poking piece is connected with the limiting teeth at the second supporting leg through the transmission mechanism; when the gravity swing piece pushes the shifting piece, the shifting piece drives the limiting teeth to be separated from the limiting tooth grooves through the transmission mechanism.

Furthermore, the plectrum with base sliding connection, drive mechanism includes first pneumatic cylinder, hydraulic pressure pipe and second pneumatic cylinder, the piston rod of first pneumatic cylinder with the plectrum is connected, the piston rod of second pneumatic cylinder is connected with the stopper, first pneumatic cylinder pass through the hydraulic pressure pipe with the second pneumatic cylinder intercommunication.

Further, the gravity swing part is a swing rod, and the bottom of the swing rod is connected with a balancing weight.

Further, the base is provided with a spring, and the spring is connected with the shifting piece.

The invention has the beneficial effects that:

when in experiment, the base is placed on a horizontal table surface, the propellant powder is placed in the emission tube, and the lead is led out from the generation tube. The launching tube penetrates through one end with the large diameter of the strip-shaped hole, then slides to one end with the small diameter, and is placed into the groove of the detection table. The one end internal diameter that the bar hole diameter is little is less than the external diameter of protruding eaves, utilizes the little one end of bar hole diameter to block the protruding eaves of launching tube, plays the effect of fixed launching tube. After the lead is ignited, the lead ignites gunpowder in the launching tube, downward acting force is generated on the launching tube when pressure is released after the propellant is ignited, the acting force acts on the force transducer through the detection platform and is detected by the force transducer, and the pressure for releasing the propellant during combustion is judged according to the detected force. The invention does not need to emit iron columns in the detection process, and the detection process is safer and more reliable. The pressure release device is simple in structure, and can effectively reduce the cost of pressure release detection on fireworks and crackers by manufacturers in the industry. The invention has the technical effects of simple operation, safety, reliability and lower cost, and the subjective error and the error brought by the external wind environment can be effectively reduced by detecting through the force measuring sensor.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only preferred embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

FIG. 1 is a schematic structural diagram of a pressure release detection device for the burning of a propellant for fireworks and crackers in accordance with embodiment 1 of the present invention;

FIG. 2 is a perspective view of a cover plate according to embodiment 1 of the present invention;

FIG. 3 is a schematic structural diagram of a pressure release detection device for use in the burning of a propellant for fireworks and crackers in accordance with embodiment 2 of the present invention;

FIG. 4 is a schematic view of the bottom view of the pressure-releasing pressure detecting device for the propellant burning of fireworks and crackers in embodiment 2 of the present invention;

in the figure, 1 base, 3 force cell sensors, 4 launching tubes, 5 test tables, 6 lead wire through holes, 7 convex eaves, 8 grooves, 9 cover plates, 10 strip-shaped holes, 11 positioning holes, 12 positioning screw holes, 13 bolts, 14 igniters, 15 adjustable supporting legs, 16 gravity swing parts, 17 plectrums, 18 transmission mechanisms, 19 limit teeth, 20 universal joints, 22 limit tooth grooves, 23 first hydraulic cylinders, 24 hydraulic tubes, 25 second hydraulic cylinders, 26 balancing weights, 27 swinging rods and 28 springs.

Detailed Description

In order to better understand the technical content of the invention, specific embodiments are provided below, and the invention is further described with reference to the accompanying drawings.

Example 1

Referring to the drawings, a pressure release detection device for firework and firecracker propellant burning comprises a base 1, a force cell sensor 3, a transmitting tube 4 and a detection table 5, wherein the force cell sensor 3 is arranged on the base 1, the detection table 5 is arranged above the force cell sensor 3, a lead through hole 6 is formed in the side wall of the transmitting tube 4, a convex eave 7 is arranged at the bottom of the transmitting tube 4, the detection table 5 is provided with a groove 8 embedded into the convex eave 7, a cover plate 9 is arranged above the groove 8, the cover plate 9 is provided with a strip-shaped hole 10, the diameter of one end of the strip-shaped hole 10 is the same as the outer diameter of the transmitting tube 4, and the diameter of the other end of the strip-shaped hole 10 is the same as the outer diameter of the convex eave 7. In the experiment, the base 1 is placed on a horizontal table, propellant powder is placed in the emission tube 4, and a lead is led out from the generation tube. The launching tube 4 penetrates through one end with the large diameter of the strip-shaped hole 10, then slides to one end with the small diameter, and is placed into the groove 8 of the detection table 5 in the launching tube 4. The one end internal diameter that the bar hole 10 diameter is little is less than the external diameter of protruding eaves 7, utilizes the one end that the bar hole 10 diameter is little to block protruding eaves 7 of launching tube 4, plays the effect of fixed launching tube 4. After the lead is ignited, the lead ignites gunpowder in the launching tube 4, downward acting force is generated on the launching tube 4 when pressure is released after the propellant is ignited, the acting force acts on the force transducer 3 through the detection platform 5 and is detected by the force transducer 3, and the pressure for releasing the propellant during combustion is judged according to the detected force. The invention does not need to emit iron columns in the detection process, and the detection process is safer and more reliable. The pressure-relief pressure-detection device is simple in structure, and can effectively reduce the cost for pressure-relief pressure detection of fireworks and crackers by manufacturers in the industry.

Specifically, positioning holes 11 are formed in the periphery of the cover plate 9, positioning screw holes 12 are formed in the detection platform, bolts 13 are arranged on the periphery of the cover plate 9, and the bolts 13 penetrate through the positioning holes 11 and then are connected with the positioning screw holes 12. The screw rod is screwed on the cover plate 9 after penetrating through the positioning hole 11, so that the cover plate 9 is firmly fixed on the detection platform 5, and the transmitting tube 4 is firmly fixed. When the launch tube 4 is to be removed, the bolt 13 is screwed in a loosened state, and then the launch tube 4 is taken out from the end of the elongated hole 10 having a large diameter.

Specifically, an igniter 14 is arranged on the detection table 5, the igniter 14 and the force measuring sensor 3 are in signal connection with a control box, and the control box is in signal connection with a display and an operation panel. The igniter 14 ignites the lead wire, thereby improving safety.

Specifically, testing platform is equipped with the spirit level, base 1 is equipped with adjustable supporting leg 15. The level meter detects the level state of the detection table 5, and when the detection table 5 is not in the level state, the level is adjusted through the adjustable supporting legs 15 on the base 1.

Specifically, the load cell 3 is a balance beam type pressure sensor. The device has the advantages of high precision, wide measurement range, long service life, simple structure and the like.

Example 2

Referring to fig. 2 to 3, the present embodiment is different from embodiment 1 in that the adjustable support leg 15 includes an adjusting mechanism and a support leg, the adjusting mechanism includes a gravity swing piece 16, a shift piece 17, a transmission mechanism 18 and a limit tooth 19, an upper portion of the gravity swing piece 16 is connected to a base 1 through a universal joint 20, four shift pieces 17 are disposed around the gravity swing piece 16 and enclose a square, the shift piece 17 is tangent to the gravity swing piece 16 when the base 1 is in a horizontal natural state, the support leg is in threaded connection with the base 1, three support legs are uniformly distributed on a circumference centering on the gravity swing piece 16, a first support leg is located on a perpendicular line of the first shift piece 17, the first support leg and a second support leg are provided with a limit tooth slot 22, the limit tooth 19 is slidably connected to the base 1, the first shift piece 17 and the shift piece 17 opposite to the first shift piece are connected to the limit tooth 19 of the first support leg through the transmission mechanism 18, the shift piece 17 adjacent to the first shift piece 17 is connected to the limit tooth 19 of the second support leg through the transmission mechanism 18; when the gravity swing piece 16 pushes the shifting piece 17, the shifting piece 17 drives the limiting teeth 19 to be separated from the limiting tooth grooves 22 through the transmission mechanism 18.

The base 1 is parallel to the detection table 5, and when the base 1 is in a water running state, the detection table 5 is also in a horizontal state. The upper portion of the gravity swing part 16 is connected with the base 1 through the universal joint 20, the gravity swing part 16 of the adjusting mechanism is always vertically downward under the action of gravity, the four shifting pieces 17 are arranged on the periphery of the gravity swing part 16 and form a square in a surrounding mode, the gravity swing part 16 is tangent to the shifting pieces 17 on the periphery when the base 1 is in a horizontal state, and the shifting pieces 17 are extruded by the gravity swing part 16 when the base 1 is inclined to the horizontal plane. The shifting piece 17 is connected with a limiting tooth 19 through a transmission mechanism 18, and the shifting piece 17 drives the limiting tooth 19 to move when swinging. Three supporting legs all with base 1 threaded connection, can adjust the height of supporting leg through rotatory supporting leg. Two of them supporting legs are provided with spacing tooth's socket 22, and spacing tooth's

socket

22 and 19 cooperations of spacing tooth can hinder the supporting leg rotation when spacing tooth 19 inserts in the supporting leg to the height of fixed supporting leg. In the case that the stop tooth 19 is not driven, the stop tooth 19 is inserted into the stop tooth slot 22, and when the pick 17 is pressed so that the drive mechanism 18 drives the stop tooth 19 to move out of the stop tooth slot 22, the gravity swing piece 16 presses one or both of the pick 17 when the base 1 is tilted. The supporting legs are evenly distributed on the circumference with the gravity swing piece 16 as the center, the first supporting leg is located the first on the perpendicular bisector of the shifting piece 17, the first shifting piece 17 and the shifting piece 17 on the opposite side of the shifting piece 17 are connected with the first limiting tooth 19 at the supporting leg through the transmission mechanism 18, when the base 1 inclines and only the first shifting piece 17 is extruded, the limiting effect of the limiting tooth 19 on the supporting legs is relieved through the transmission mechanism 18 by the shifting piece 17 at the moment, other supporting legs are clamped by the limiting tooth 19 and cannot rotate, and when the first supporting leg is rotated to the incapable of rotating, the base 1 is in a horizontal state. The plectrum 17 adjacent with first plectrum 17 passes through drive mechanism 18 and second limiting tooth 19 of supporting leg department is connected, when base 1 slope and only first plectrum 17 and the adjacent plectrum 17 of first plectrum 17 received the extrusion, first supporting leg and second supporting leg can both rotate, rotate the one end of second supporting leg when rotating second supporting leg this moment and rise, until base 1 is in the state to first supporting leg slope, only first plectrum 17 received the extrusion this moment, second supporting leg rotates first supporting leg again to unable when rotating, base 1 is in the horizontally state when even supporting leg all can't rotate. When the horizontal adjustment is carried out, the horizontal adjustment can be completed only by sequentially adjusting the second supporting leg and the first supporting leg to the state that the second supporting leg and the first supporting leg cannot be adjusted, and the operation is convenient and the efficiency is high.

Specifically, the plectrum 17 with base 1 sliding connection, drive mechanism 18 includes first pneumatic cylinder 23, hydraulic pressure pipe 24 and second pneumatic cylinder 25, the piston rod of first pneumatic cylinder 23 with the plectrum 17 is connected, the piston rod of second pneumatic cylinder 25 is connected with the stopper, first pneumatic cylinder 23 through hydraulic pressure pipe 24 with second pneumatic cylinder 25 intercommunication. The cylinder bodies of the first hydraulic cylinder 23 and the second hydraulic cylinder are fixed on the base 1, the piston rod of the first hydraulic cylinder 23 is connected with the shifting piece 17, and the piston rod of the first hydraulic cylinder 23 is driven to extrude hydraulic oil into the second hydraulic cylinder 25 when the shifting piece 17 is extruded, so that the piston rod of the second hydraulic cylinder 25 is driven to move outwards, and the limiting teeth 19 are driven to move to separate from the limiting tooth grooves 22 of the supporting legs. Two plectrums 17 that are each other contralateral pass through drive mechanism 18 and drive same spacing tooth 19 motion, for example drive the spacing tooth 19 motion of first supporting leg through drive mechanism 18 when first plectrum 17 is extruded, also drive the spacing tooth 19 motion of first supporting leg through drive mechanism 18 when the plectrum 17 of first plectrum 17 contralateral is extruded, two plectrums 17 can do separately.

Specifically, the gravity swing part 16 is a swing rod 27, and a weight 26 is connected to the bottom of the swing rod 27. The swing rod 27 is cylindrical, so that the pushing of the shifting piece 17 is facilitated, the weight of the gravity swing piece 16 is increased by the balancing weight 26, and the swinging force is increased.

Specifically, the base 1 is provided with a spring 28, and the spring 28 is connected with the shifting piece 17. The spring 28 can drive the shifting sheet 17 to reset.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. The utility model provides a fireworks and crackers propellant powder burning pressure release pressure detection device, a serial communication port, include base, force cell sensor, launching tube and examine test table, force cell sensor locates on the base, the force cell sensor top is equipped with examine test table, the lateral wall of launching tube is equipped with the lead wire and wears to cave, and the bottom of launching tube is equipped with protruding eaves, it is equipped with the embedding to examine test table the recess of protruding eaves, the recess top is equipped with the apron, the apron is equipped with the bar hole, the diameter of the one end in bar hole with the external diameter of launching tube is the same, and the diameter of the other end is the same with the external diameter of protruding eaves.

2. The pressure release detection device for the burning of the propellant powder of fireworks and crackers as claimed in claim 1, wherein positioning holes are formed in the periphery of the cover plate, positioning screw holes are formed in the detection platform, bolts are arranged on the periphery of the cover plate, and the bolts penetrate through the positioning holes and then are connected with the positioning screw holes.

3. The device for detecting the pressure relief of the propellant powder combustion of fireworks and crackers as claimed in claim 1, wherein an igniter is arranged on the detection table, the igniter and the force transducer are in signal connection with a control box, and the control box is in signal connection with a display and an operation panel.

4. The device for detecting the pressure release during the burning of the propellant powder of fireworks and crackers as claimed in claim 1, wherein the detection platform is provided with a level gauge, and the base is provided with adjustable support legs.

5. The device for detecting the pressure release of the propellant powder burning of fireworks and crackers as claimed in claim 1, wherein said load cell is a balance beam type pressure sensor.

6. The firework and firecracker propellant burning pressure release pressure detection device according to claim 1, wherein the adjustable support leg comprises an adjusting mechanism and a support leg, the adjusting mechanism comprises a gravity swing piece, a poking piece, a transmission mechanism and a limit tooth, the upper part of the gravity swing piece is connected with a base through a universal joint, four poking pieces are arranged around the gravity swing piece and enclose a square, the poking piece is tangent to the gravity swing piece when the base is in a horizontal natural state, the support leg is in threaded connection with the base, three support legs are uniformly distributed on a circumference with the gravity swing piece as a center, the first support leg is positioned on a perpendicular bisector of the first poking piece, the first support leg and the second support leg are provided with limit tooth grooves, the limit tooth is slidably connected to the base, the first poking piece and the poking piece opposite to the first poking piece are connected with the limit tooth at the first support leg through the transmission mechanism, and the poking piece adjacent to the first poking piece is connected with the limit tooth at the second support leg through the transmission mechanism; when the gravity swing piece pushes the shifting piece, the shifting piece drives the limiting teeth to be separated from the limiting tooth grooves through the transmission mechanism.

7. The firework and firecracker propellant burning pressure release pressure detection device according to claim 6, wherein the plectrum is connected with the base in a sliding manner, the transmission mechanism comprises a first hydraulic cylinder, a hydraulic pipe and a second hydraulic cylinder, a piston rod of the first hydraulic cylinder is connected with the plectrum, a piston rod of the second hydraulic cylinder is connected with the limiting block, and the first hydraulic cylinder is communicated with the second hydraulic cylinder through the hydraulic pipe.

8. The pressure release detection device for the burning of the propellant powder of fireworks and crackers as claimed in claim 6, wherein the gravity swing part is a swing rod, and the bottom of the swing rod is connected with a balancing weight.

9. The device for detecting the pressure release of the propellant powder for fireworks and crackers as claimed in claim 6, wherein the base is provided with a spring, and the spring is connected with the poking piece.