A device for measuring the strain of the charge column and the deformation of the shell of a pressurized solidified charge

Abstract

The present invention discloses a device for measuring the strain of a charge and the deformation of a shell of a pressurized solidified charge, and relates to the technical field of charge measurement. The device comprises a support frame, a double-headed cylinder, a control panel, and a data terminal mounted on the support frame, a first hydraulic push rod electrically connected to the control panel mounted on the support frame, a connecting plate fixed to the telescopic end of the first hydraulic push rod, a fixed shaft fixed to the support frame, a symmetrically distributed housing rotatably connected to adjacent connecting rods, a flexible strain sensor electrically connected to the data terminal mounted on the housing, the housing and the flexible strain sensor having the same height, and both being greater than the height of the housing. The present invention applies pressure to the area adjacent to the flexible strain sensor through water, causing the flexible strain sensor to fit tightly against the outer wall of the housing, thereby sensing slight deformations of the housing and improving the accuracy of the housing deformation measurement.

Description

Technical Field

[0001] The present invention relates to the technical field of charge measurement, and in particular to a device for measuring the strain of a charge and the deformation of a shell of a pressurized solidified charge. Background Art

[0002] Solid propellant is a type of propellant commonly used in rocket engines. It is usually composed of fuel, oxidizer and certain additives. Unlike liquid propellant, solid propellant is widely used due to its advantages such as safe storage and transportation, long-term storage of the shell and not easy to leak and evaporate, rapid startup and fast response time. However, before solid propulsion and production, its condition under normal operating conditions needs to be measured.

[0003] Most existing measurement devices only apply confining pressure to the shell and the grain. During the measurement process, it is difficult for the sensor to always fit tightly with the outside of the shell, making it difficult for the sensor to measure small deformations of the shell, resulting in inaccurate measurements. At the same time, it is also impossible to avoid the influence of fuel debris falling off due to strain on the grain on the measurement, thereby reducing the accuracy of the measurement. Summary of the Invention

[0004] In order to overcome the shortcomings of existing measuring devices in which the sensor is difficult to fit tightly with the outer side of the shell at all times during the measurement process, and the influence of fuel debris falling off due to the strain of the grain on the measurement cannot be avoided, thereby reducing the measurement accuracy, the present invention provides a device for measuring the grain strain and shell deformation of pressurized solidified charges.

[0005] The technical solution is as follows: A device for measuring the strain of a charge column and the deformation of a shell of a pressurized solidified charge, comprising a support frame, a double-headed cylinder, a control panel and a data terminal installed on the support frame, the two telescopic ends of the double-headed cylinder are respectively fixedly connected to a first fixed plate and a second fixed plate, the support frame is installed with a first hydraulic push rod electrically connected to the control panel, the telescopic end of the first hydraulic push rod is fixedly connected to a connecting plate, the connecting plate is rotatably connected to symmetrically distributed connecting rods, the support frame is fixed with a fixed shaft, the fixed shaft is rotatably connected to a shell symmetrically distributed and rotatably connected to adjacent connecting rods, the shell is installed with a flexible strain sensor electrically connected to the data terminal, the outer The shell has the same height as the flexible strain sensor, and both are greater than the height of the shell; the first fixed plate is equipped with a second hydraulic push rod electrically connected to the control panel; the telescopic end of the second hydraulic push rod is fixedly connected to a fixed rod; the fixed rod is equipped with a measuring probe electrically connected to the data terminal; the first fixed plate and the second fixed plate are both fixedly connected to sealing plates slidably connected to adjacent fixed rods; the sealing plates are slidably connected to symmetrically distributed connecting pins; adjacent connecting pins are fixedly connected with induction rings electrically connected to the data terminal; the first fixed plate is equipped with a blower electrically connected to the control panel; the blower is connected to the adjacent sealing plate through a first air duct.

[0006] Preferably, the second fixed plate is equipped with an exhaust fan, which is electrically connected to the control panel. The power of the exhaust fan is less than that of the blower. The exhaust fan is connected to the adjacent sealing plate through a second air duct.

[0007] Preferably, there is a cavity between adjacent shells and flexible strain sensors, the support frame is fixedly connected to a water tank, the water tank is fixedly connected to a pumping pipe, the pumping pipe is electrically connected to the control panel, and the water tank is connected to the cavity between the adjacent shells and flexible strain sensors through the pumping pipe.

[0008] Preferably, a symmetrically distributed first elastic element is fixed between the sealing plate and the adjacent induction ring, and the symmetrical first elastic elements are respectively sleeved on the adjacent connecting pins. The induction ring is provided with a first cavity, and the induction ring is provided with a circumferentially distributed first through hole. The first cavity is connected to the outside world through the first through hole. The connecting pin is provided with a second cavity, and the second cavity is connected to the first cavity. The connecting pin is provided with a circumferentially distributed second through hole, and the second cavity is connected to the second through hole. The sealing plate is provided with a symmetrically distributed third cavity, and the sealing plate is provided with evenly distributed third and fourth through holes. The third cavity is connected to the outside world through the fourth through hole. The first fixed plate is provided with a locking mechanism for limiting the connecting pin.

[0009] Preferably, the locking mechanism includes symmetrically distributed sliding rods, which are slidably connected to the first fixed plate and the second fixed plate respectively, both ends of the sliding rods are fixedly connected to the limit blocks, the connecting pins are provided with limit grooves that cooperate with adjacent limit blocks, the first fixed plate and the second fixed plate are slidably connected to the adjacent limit blocks respectively, and a second elastic element is fixed between the first fixed plate and the second fixed plate and the adjacent limit blocks.

[0010] Preferably, when the connecting pin and the limiting block are in a mating state, the axis of the second through hole and the axis of the third through hole remain coincident.

[0011] Preferably, it also includes symmetrically distributed annular shells, which are all fixed to the sealing plate on one side. The annular plate is slidably connected inside the annular shell, and the annular shell is connected to an intermediate pipe. A fire extinguishing mechanism for extinguishing fire is set on the sealing plate away from the second hydraulic push rod.

[0012] Preferably, the fire extinguishing mechanism includes a nozzle, which is fixed to an adjacent sealing plate and electrically connected to the control panel. The sealing plate close to the nozzle is fixed with an intermediate shell, the intermediate shell is connected to the nozzle, and the intermediate shell is connected to the annular shell through an intermediate tube. The second fixed plate is fixed with a carbon dioxide liquefied tank, and a connecting pipe is connected between the intermediate shell and the carbon dioxide liquefied tank. An electromagnetic valve is provided in the connecting pipe, and the electromagnetic valve is electrically connected to the control panel.

[0013] Preferably, a slide plate is slidably connected in the middle shell, and a third elastic element is fixedly connected between the slide plate and the middle shell.

[0014] Preferably, the space between the annular shell and the adjacent annular plate and the space between the intermediate shell and the slide plate are filled with liquid medium.

[0015] The beneficial effects of the present invention are as follows: the present invention applies pressure to the area adjacent to the flexible strain sensor through water, so that the flexible strain sensor fits tightly with the outer wall of the shell, thereby sensing the slight deformation of the shell, thereby improving the accuracy of the shell deformation measurement; the blower and the exhaust fan are used to discharge the air in the shell and the debris generated when the powder column is deformed, and at the same time the air in the shell moves downward, simulating the situation that the gas in the gas channel of the powder column moves in the same direction when the powder column is burning, further increasing the degree to which the powder column conforms to normal working conditions, thereby improving the accuracy of the measurement, and at the same time avoiding the influence of fuel debris falling off the surface of the powder column on the normal measurement work, thereby improving the measurement. Accuracy; by relieving the pressure of the shell, the shell is prevented from being broken due to the increase in pressure inside the shell caused by the explosion of the charge, causing damage to the device and even endangering the personal safety of the staff, thereby ensuring the personal safety of the staff during the measurement process; the connecting pin is limited by the limit block, so that the axis of the second through hole and the axis of the third through hole remain coincident, thereby extending the time for the gas in the shell to be discharged outward, further reducing the pressure in the shell, and thus improving the effect of depressurizing the shell; the slide plate is used to compress the gas on the upper side so that the carbon dioxide is quickly distributed to various areas inside the shell, thereby reducing the oxidant concentration in the shell, and thus reducing the degree of combustion of the charge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention.

[0017] Figure 2 It is a schematic diagram of the three-dimensional structure of the supporting frame, double-headed cylinder, connecting plate and other parts of the present invention.

[0018] Figure 3 It is a schematic diagram of the three-dimensional structure of the sealing plate, connecting pin, induction ring and other parts of the present invention.

[0019] Figure 4 It is a schematic diagram of the three-dimensional structure of the double-headed cylinder, fixed shaft, flexible strain sensor and other parts of the present invention.

[0020] Figure 5 For the present invention Figure 4 Enlarged view of the three-dimensional structure at point A in the middle.

[0021] Figure 6 For the present invention Figure 4 Enlarged view of the three-dimensional structure at point B in the middle.

[0022] Figure 7 For the present invention Figure 4 Enlarged view of the three-dimensional structure at point C in the middle.

[0023] Explanation of the reference numerals: 1-support frame, 2-double-headed cylinder, 301-first fixed plate, 302-second fixed plate, 4-first hydraulic push rod, 5-connecting plate, 6-connecting rod, 7-fixed shaft, 8-housing, 9-flexible strain sensor, 10-second hydraulic push rod, 11-fixed rod, 12-sealing plate, 13-connecting pin, 14-induction ring, 1501-blower, 1502-exhaust fan, 1503-water tank, 1504-extraction pipe, 1505-first elastic element, 1601-first cavity , 1602-first through hole, 1603-second cavity, 1604-second through hole, 1605-third cavity, 1606-third through hole, 1607-fourth through hole, 1701-slide rod, 1702-limiting block, 1703-second elastic element, 1801-annular shell, 1802-annular plate, 1803-middle pipe, 1901-nozzle, 1902-middle shell, 1903-carbon dioxide liquefied tank, 1904-connecting pipe, 1905-slide plate, 1906-third elastic element. DETAILED DESCRIPTION

[0024] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0025] Example 1: A device for measuring the strain of a pressurized solidified charge and the deformation of a shell, such as Figures 1-4As shown, it includes a support frame 1, a vertically placed double-headed cylinder 2 is fixedly installed on the right side of the support frame 1, a control panel and a data terminal are fixedly installed on the bottom of the support frame 1, and the two telescopic ends of the double-headed cylinder 2 are respectively fixedly connected to the first fixed plate 301 and the second fixed plate 302, the first fixed plate 301 is located above the second fixed plate 302, and the right side of the upper part of the support frame 1 is fixedly installed with a first hydraulic push rod 4, the first hydraulic push rod 4 is electrically connected to the control panel, the telescopic end of the first hydraulic push rod 4 is fixedly connected to a connecting plate 5, the connecting plate 5 is rotatably connected to two symmetrically distributed connecting rods 6, the left side of the upper part of the support frame 1 is fixedly connected to a fixed shaft 7, the fixed shaft 7 is rotatably connected to two symmetrically distributed shells 8, the two shells 8 are rotatably connected to the adjacent connecting rods 6, and flexible strain sensors 9 are fixedly installed on the opposite sides of the two shells 8, the shell 8 and the flexible strain sensor 9 have the same height, and both are greater than the height of the shell, and the outer side of the shell is fully deformed by the flexible strain sensor 9. Partial coverage is achieved to ensure the area during subsequent measurements and improve the accuracy of the measurements. The flexible strain sensor 9 is electrically connected to the data terminal. A second hydraulic push rod 10 is fixedly installed on the upper side of the middle part of the first fixed plate 301. The second hydraulic push rod 10 is electrically connected to the control panel. The telescopic end of the second hydraulic push rod 10 is fixedly connected to a fixed rod 11. The middle and lower parts of the fixed rod 11 are fixedly installed with evenly distributed measuring probes, which are electrically connected to the data terminal. Sealing plates 12 are fixedly connected to the opposite sides of the first fixed plate 301 and the second fixed plate 302. The fixed rod 11 is slidably connected to the sealing plate 12 on the upper side. The sealing plate 12 is slidably connected to two symmetrically distributed connecting pins 13. An induction ring 14 is fixed between the two adjacent connecting pins 13. The induction ring 14 is electrically connected to the data terminal. A blower 1501 is fixedly installed on the upper side of the first fixed plate 301. The blower 1501 is electrically connected to the control panel. The blower 1501 is connected to the sealing plate 12 on the upper side through the first air duct.

[0026] like Figure 1 and Figure 2 As shown, an exhaust fan 1502 is fixedly installed on the lower side of the second fixed plate 302, and the exhaust fan 1502 is electrically connected to the control panel. The power of the exhaust fan 1502 is less than that of the blower 1501. The exhaust fan 1502 is connected to the sealing plate 12 on the lower side through a second air duct. There is a cavity between the adjacent outer shell 8 and the flexible strain sensor 9 for holding water, so as to apply pressure to the area of ​​the adjacent flexible strain sensor 9, so that the flexible strain sensor 9 fits tightly with the outer wall of the shell, thereby sensing the slight deformation of the shell, thereby improving the accuracy of the flexible strain sensor 9 in measuring the shell deformation. A water tank 1503 is fixedly connected to the upper side of the bottom of the support frame 1, and the upper side of the water tank 1503 is connected to an extraction pipe 1504, which is electrically connected to the control panel. The water tank 1503 is connected to the cavity between the adjacent outer shell 8 and the flexible strain sensor 9 through the extraction pipe 1504.

[0027] When it is necessary to measure the strain of the medicine column and the deformation of the shell, the staff places the shell and the medicine column between two symmetrical induction rings 14, and then the staff starts the double-headed cylinder 2 through the control panel. The upper and lower telescopic ends of the double-headed cylinder 2 drive the adjacent first fixed plate 301 and the second fixed plate 302 to start moving towards each other, and the first fixed plate 301 and the second fixed plate 302 respectively drive the parts on each of them to move towards each other, and then the two induction rings 14 move towards each other in the shell until the opposite sides of the two induction rings 14 contact the upper and lower sides of the medicine column respectively. At this time, the two close The sealing plate 12 blocks the upper and lower ends of the shell respectively. At that time, the staff closes the double-headed cylinder 2 through the control panel, and the upper and lower telescopic ends of the double-headed cylinder 2 and their respective parts stop moving. Then the staff starts the second hydraulic push rod 10 through the control panel, and the telescopic end of the second hydraulic push rod 10 begins to move downward. The telescopic end of the second hydraulic push rod 10 drives the fixed rod 11 and the measuring probe thereon to move downward together, until the measuring probe at the lower end of the fixed rod 11 moves to the lower end of the medicine column. The staff closes the second hydraulic push rod 10 through the control panel, and the fixed rod 11 stops moving.

[0028] The staff then turns on the first hydraulic push rod 4 through the control panel. The telescopic end of the first hydraulic push rod 4 begins to drive the connecting plate 5 to move to the left. The connecting plate 5 pushes the two connecting rods 6 to move to the left together. The connecting rod 6 also swings in the process of moving to the left. The front and rear connecting rods 6 push the adjacent shells 8 respectively. The shells 8 begin to rotate with the axis of the fixed shaft 7 as the rotation center. The two shells 8 drive the flexible strain sensors 9 on each other to move toward each other until the two flexible strain sensors 9 are in contact with the outer side of the shell. At this time, the adjacent sides of the two shells 8 are tightly fitted, and the adjacent sides of the two flexible strain sensors 9 are tightly fitted. The staff turns off the first hydraulic push rod through the control panel. 4 and start the extraction pipe 1504. The shell 8 stops moving. The extraction pipe 1504 starts to extract water from the water tank 1503. The water enters the cavity between the shell 8 and the flexible strain sensor 9 after passing through the extraction pipe 1504. As the extraction pipe 1504 continues to extract water, more and more water accumulates in the cavity between the shell 8 and the flexible strain sensor 9. The water applies pressure to the area adjacent to the flexible strain sensor 9, making the flexible strain sensor 9 fit tightly against the outer wall of the shell, thereby sensing the slight deformation of the shell and improving the accuracy of the shell deformation measurement. Until the water surface is flush with the upper side of the shell, the staff closes the extraction pipe 1504 through the control panel.

[0029] After the above work is completed, the staff starts the flexible strain sensor 9, the measuring probe, the induction ring 14, the blower 1501 and the exhaust fan 1502. The blower 1501 starts to fill the shell with air, and the exhaust fan 1502 discharges the air from the shell. Since the power of the blower 1501 is greater than the power of the exhaust fan 1502, the pressure of the shell continues to increase, thereby simulating the load condition of the grain during combustion. As the pressure in the shell continues to increase, the shapes of the grains in the shell are different, so the load conditions of the grains in the shell are different. At the same time, since the area of ​​the grain gas channel in the shell is larger than the upper and lower areas, the The area of ​​the two end faces, so the load on the charge gas channel in the shell is greater than the load on its upper and lower end faces, and the charge gas channel in the shell begins to expand to the surroundings, the measuring probe measures the gas channel of the charge, the induction ring 14 measures the upper and lower end faces of the charge, and the flexible strain sensor 9 measures the deformation of the shell respectively. The measuring probe, the induction ring 14 and the flexible strain sensor 9 then transmit the measurement results to the data terminal for reference by the staff, thereby measuring the strain of the charge and the deformation of the shell under high pressure environment, providing data for the charge and shell 8 in actual working conditions, and improving the subsequent process of making the charge and shell.

[0030] As the blower 1501 and the exhaust fan 1502 continue to operate, the pressure in the shell continues to increase, and the load on the grain and the shell also continues to increase. The measuring probe, the induction ring 14, and the flexible strain sensor 9 continuously measure the deformation of the gas passage of the grain, the upper and lower end faces of the grain, and the shell until the grain loses its normal shape. This is used to measure the load limit of the grain and record the degree of deformation of the shell. This is used to improve the quality of the grain and shell during manufacturing. When the pressure in the shell continues to increase, the blower 1501 and the exhaust fan 1502 discharge the air in the shell and the debris generated by the deformation of the grain. At the same time, the air in the shell is moved downward, simulating the situation in which the gas in the gas passage of the grain moves in the same direction during combustion. This further increases the degree to which the grain conforms to normal operating conditions, thereby improving the accuracy of the measurement. At the same time, it also prevents the normal measurement work from being affected by fuel debris falling off the surface of the grain, thereby improving the accuracy of the measurement.

[0031] After the measurement is completed, the staff turns off the blower 1501, starts the flexible strain sensor 9, the measuring probe and the induction ring 14, and starts the extraction pipe 1504. The exhaust fan 1502 discharges the air in the shell to the outside, and at the same time the extraction pipe 1504 discharges the water between the shell 8 and the flexible strain sensor 9 into the water tank 1503. After the pressure in the shell is equal to the atmospheric pressure and the water between the shell 8 and the flexible strain sensor 9 is discharged, the staff resets the device and takes out the shell and the medicine column.

[0032] Example 2: Based on Example 1, Figure 4 and Figure 5 As shown, two symmetrically distributed first elastic elements 1505 are fixed between the sealing plate 12 and the adjacent induction ring 14. The first elastic element 1505 is a spring. The two first elastic elements 1505 are respectively sleeved on the adjacent connecting pins 13. The induction ring 14 is provided with a first cavity 1601. The induction ring 14 is provided with a plurality of first through holes 1602 distributed circumferentially. The first cavity 1601 is connected to the outside through the first through holes 1602. A second cavity 1603 is provided in the middle and lower part of the connecting pin 13. The second cavity 1603 is connected to the first cavity 1601. The middle part of the connecting pin 13 is provided with four circumferentially distributed second through holes 1604. The second cavity 1603 It is connected to the second through hole 1604, and the sealing plate 12 is provided with two symmetrically distributed third cavities 1605. The left and right parts of the sealing plate 12 are provided with evenly distributed third through holes 1606 and fourth through holes 1607. The third cavity 1605 is connected to the outside through the fourth through hole 1607. After the second through hole 1604 and the third cavity 1605 are connected, the shell is depressurized to prevent the shell from being broken due to the increase in pressure inside the shell caused by the explosion of the charge, causing damage to the device and endangering the personal safety of the staff. In this way, the personal safety of the staff during the measurement process is ensured. The first fixed plate 301 is provided with a locking mechanism for limiting the connecting pin 13.

[0033] like Figure 4 and Figure 5 As shown, the locking mechanism includes two symmetrically distributed slide bars 1701, which are symmetrically distributed and respectively connected to the first fixed plate 301 and the second fixed plate 302 in a sliding manner. The left and right ends of the slide bars 1701 are fixedly connected to the limit blocks 1702. The connecting pin 13 is provided with a limit groove that cooperates with the adjacent limit blocks 1702. The first fixed plate 301 and the second fixed plate 302 are respectively connected to the adjacent limit blocks 1702 in a sliding manner. The limit blocks 1702 adjacent to the first fixed plate 301 and the adjacent second fixed plate 302 are fixed to the limit blocks 1702. A second elastic element 1703 is fixedly connected between 702, and the second elastic element 1703 is a spring. When the connecting pin 13 and the limit block 1702 are in a mating state, the axis of the second through hole 1604 and the axis of the third through hole 1606 remain coincident, and the limit block 1702 is used to limit the adjacent connecting pins 13 so that the second through hole 1604 and the third cavity 1605 remain connected, thereby extending the time for the gas in the shell to be discharged to the outside, further reducing the pressure in the shell, and thereby improving the effect of decompression of the shell.

[0034] When the shell is pressurized, the charge explodes due to the high pressure. The control panel turns off the blower 1501 and the exhaust fan 1502. The intense combustion of the charge causes a sudden increase in the pressure in the shell. The two induction rings 14 are loaded and start to move up and down respectively. Taking the induction ring 14 on the upper side as an example, the induction ring 14 drives the two connecting pins 13 thereon to start sliding upward along the adjacent sealing plate 12. The induction ring 14 compresses the adjacent first elastic element 1505. When the connecting pin 13 moves upward to the axis of the second through hole 1604, the connecting pin 13 moves upward to the axis of the second through hole 1604. When the line coincides with the axis of the adjacent third through hole 1606, the gas in the shell passes through the first cavity 1601, the first through hole 1602, the second cavity 1603, the second through hole 1604, the third cavity 1605, the third through hole 1606 and the fourth through hole 1607 and enters the external environment, thereby relieving the pressure of the shell and preventing the shell from being broken due to the increase in pressure inside the shell caused by the explosion of the charge, causing damage to the device and even endangering the personal safety of the staff, thereby ensuring the personal safety of the staff during the measurement process.

[0035] When the connecting pin 13 moves upward and contacts the adjacent limit block 1702, the limit block 1702 is squeezed and begins to move to the right. The limit block 1702 drives the adjacent slide bar 1701 to move to the right together, and the second elastic element 1703 is squeezed by the adjacent limit block 1702. When the connecting pin 13 moves until its limit groove is parallel to the adjacent limit block 1702, the connecting pin 13 loses its limit on the limit block 1702, and the limit block 1702 begins to move to the left under the action of the elastic force of the second elastic element 1703 until the limit block 1702 enters the adjacent connecting pin 13 limit groove, thereby limiting the connecting pin 13 and making the axis of the second through hole 1604 coincide with the axis of the third through hole 1606, thereby extending the time for the gas in the shell to be discharged outward, further reducing the pressure in the shell, and thereby improving the effect of decompression of the shell.

[0036] When the charge is burned out and the pressure in the shell returns to atmospheric pressure, the staff pushes the slide bar 1701 to the right, and the slide bar 1701 drives the two adjacent limit blocks 1702 to move to the right together. The limit block 1702 begins to compress the adjacent second elastic element 1703. When the limit block 1702 is disengaged from the limit groove of the connecting pin 13, the connecting pin 13 and the induction ring 14 are reset under the elastic force of the first elastic element 1505. Then the staff releases the slide bar 1701, and the slide bar 1701 and the limit block 1702 are reset under the elastic force of the adjacent second elastic element 1703. Through the cooperation of the slide bar 1701, the limit block 1702 and the second elastic element 1703, the connecting pin 13 is quickly reset, thereby improving the use efficiency of the device. After the measurement is completed, the staff resets the device and takes out the shell and charge.

[0037] Example 3: Based on Example 2, Figure 4 、 Figure 6 and Figure 7 As shown, it also includes two symmetrically distributed annular shells 1801, and the two symmetrically distributed annular shells 1801 are fixed to the lower side of the lower sealing plate 12. An annular plate 1802 is slidably connected in the annular shell 1801, and a liquid medium is filled between the annular shell 1801 and the adjacent annular plate 1802. The liquid medium is hydraulic oil. The opposite sides of the two annular shells 1801 are connected to an intermediate pipe 1803, and the resistance of the hydraulic oil when flowing through the intermediate pipe 1803 is used to buffer the annular plate 1802, thereby buffering the high air pressure generated by the explosion of the explosive column, avoiding damage to the induction ring 14 and the sealing plate 12 due to hard contact. The lower sealing plate 12 is provided with a fire extinguishing mechanism for extinguishing fire.

[0038] like Figure 4 and Figure 7 As shown, the fire extinguishing mechanism includes a nozzle 1901, which is fixed to the middle of the lower sealing plate 12. The nozzle 1901 is electrically connected to the control panel. The lower side of the lower sealing plate 12 is fixed with an intermediate shell 1902, which is connected to the nozzle 1901. The intermediate shell 1902 is connected to the annular shell 1801 through an intermediate pipe 1803. The middle of the second fixed plate 302 is fixed with a carbon dioxide liquefied tank 1903. A connecting pipe 1904 is connected between the intermediate shell 1902 and the carbon dioxide liquefied tank 1903. The upper end of the connecting pipe 1904 is connected to the upper end of the connecting pipe 1904. A solenoid valve is provided, which is electrically connected to the control panel. A slide plate 1905 is slidably connected inside the intermediate shell 1902. A liquid medium is filled between the lower side of the intermediate shell 1902 and the slide plate 1905. The liquid medium is hydraulic oil. A third elastic element 1906 is fixedly connected between the upper side of the slide plate 1905 and the intermediate shell 1902. The third elastic element 1906 is a spring. The slide plate 1905 compresses the gas on its upper side so that the carbon dioxide is quickly distributed to various areas inside the shell, thereby reducing the oxidant concentration in the shell and further reducing the degree of combustion of the propellant.

[0039] When the charge explodes during the measurement process, taking the sealing plate 12 on the lower side as an example, the induction ring 14 drives the parts on it to move downward together. When the second through hole 1604 moves to coincide with the axis of the adjacent third through hole 1606, the gas in the shell passes through the first cavity 1601, the first through hole 1602, the second cavity 1603, the second through hole 1604, the third cavity 1605, the third through hole 1606 and the fourth through hole 1607 and begins to squeeze the adjacent annular plate 1802. The annular plate 1802 begins to slide downward in the adjacent annular shell 1801, and the annular plate 1802 begins to squeeze the hydraulic oil in the adjacent annular shell 1801. The squeezed hydraulic oil passes through the adjacent The middle tube 1803 enters the middle shell 1902, and the hydraulic oil in the middle shell 1902 begins to squeeze the slide 1905, and the slide 1905 begins to move upward, squeezing the gas on its upper side and the third elastic element 1906. Then the staff turns on the nozzle 1901 and the solenoid valve through the control panel, and then the carbon dioxide flowing out of the carbon dioxide liquefied tank 1903 is sprayed into the interior of the shell through the nozzle 1901 after being charged by the gas on the upper side of the slide 1905, so that the carbon dioxide is quickly distributed to various areas inside the shell, thereby reducing the oxidant concentration in the shell, and then reducing the combustion degree of the charge. After the measurement is completed, the staff reset the device and take out the shell and the charge.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included in the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A device for measuring the strain of the charge and the deformation of the shell of a pressurized solidified charge, characterized in that: The invention comprises a support frame (1), the support frame (1) is equipped with a double-headed cylinder (2), a control panel and a data terminal, the two telescopic ends of the double-headed cylinder (2) are respectively fixedly connected to a first fixed plate (301) and a second fixed plate (302), the support frame (1) is equipped with a first hydraulic push rod (4) electrically connected to the control panel, the telescopic end of the first hydraulic push rod (4) is fixedly connected to a connecting plate (5), the connecting plate (5) is rotatably connected to symmetrically distributed connecting rods (6), the support frame (1) is fixedly connected to a fixed shaft (7), the fixed shaft (7) is rotatably connected to a housing (8) symmetrically distributed and rotatably connected to the adjacent connecting rods (6), the housing (8) is equipped with a flexible strain sensor (9) electrically connected to the data terminal, the housing (8) and the flexible strain sensor (9) have the same height, and both are larger than the housing. height, the first fixed plate (301) is equipped with a second hydraulic push rod (10) electrically connected to the control panel, the telescopic end of the second hydraulic push rod (10) is fixedly connected to a fixed rod (11), the fixed rod (11) is equipped with a measuring probe electrically connected to the data terminal, the first fixed plate (301) and the second fixed plate (302) are both fixedly connected to a sealing plate (12), the fixed rod (11) is slidably connected to the adjacent sealing plate (12), the sealing plate (12) is slidably connected to symmetrically distributed connecting pins (13), and an induction ring (14) electrically connected to the data terminal is fixedly connected between adjacent connecting pins (13), the first fixed plate (301) is equipped with a blower (1501) electrically connected to the control panel, and the blower (1501) is connected to the adjacent sealing plate (12) through a first air duct; The second fixed plate (302) is equipped with an exhaust fan (1502), which is electrically connected to the control panel. The power of the exhaust fan (1502) is less than that of the blower (1501), and the exhaust fan (1502) is connected to the adjacent sealing plate (12) through a second air duct.

2. The device for measuring the strain of the charge and the deformation of the shell of a pressurized solidified charge according to claim 1, characterized in that: A cavity exists between adjacent housings (8) and flexible strain sensors (9); the support frame (1) is fixedly connected to a water tank (1503); the water tank (1503) is fixedly connected to a pumping pipe (1504); the pumping pipe (1504) is electrically connected to a control panel; the water tank (1503) is connected to the cavity between the adjacent housing (8) and the flexible strain sensor (9) via the pumping pipe (1504).

3. The device for measuring the strain of the charge and the deformation of the shell of a pressurized solidified charge according to claim 1, characterized in that: A symmetrically distributed first elastic element (1505) is fixed between the sealing plate (12) and the adjacent induction ring (14), and the symmetrical first elastic elements (1505) are respectively sleeved on the adjacent connecting pins (13). The induction ring (14) is provided with a first cavity (1601), and the induction ring (14) is provided with a circumferentially distributed first through hole (1602). The first cavity (1601) is communicated with the outside through the first through hole (1602), and the connecting pin (13) is provided with a second cavity (1603). The second cavity (1603) and the first cavity (1601), the connecting pin (13) is provided with a circumferentially distributed second through hole (1604), the second cavity (1603) is communicated with the second through hole (1604), the sealing plate (12) is provided with a symmetrically distributed third cavity (1605), the sealing plate (12) is provided with a uniformly distributed third through hole (1606) and a fourth through hole (1607), the third cavity (1605) is communicated with the outside world through the fourth through hole (1607), and the first fixing plate (301) is provided with a locking mechanism for limiting the connecting pin (13).

4. The device for measuring the strain of the charge and the deformation of the shell of a pressurized solidified charge according to claim 3, characterized in that: The locking mechanism includes symmetrically distributed sliding rods (1701), which are symmetrically distributed and respectively slidably connected to the first fixed plate (301) and the second fixed plate (302), both ends of the sliding rod (1701) are fixedly connected to the limit blocks (1702), the connecting pin (13) is provided with a limit groove that cooperates with the adjacent limit blocks (1702), the first fixed plate (301) and the second fixed plate (302) are respectively slidably connected to the adjacent limit blocks (1702), and a second elastic element (1703) is fixedly connected between the first fixed plate (301) and the second fixed plate (302) and the adjacent limit blocks (1702).

5. The device for measuring the strain of the charge and the deformation of the shell of a pressurized solidified charge according to claim 4, characterized in that: When the connecting pin (13) and the limiting block (1702) are in a mating state, the axis of the second through hole (1604) and the axis of the third through hole (1606) remain coincident.

6. The device for measuring the strain of the charge and the deformation of the shell of a pressurized solidified charge according to claim 1, characterized in that: The device further comprises symmetrically distributed annular shells (1801), each of the symmetrically distributed annular shells (1801) being fixedly connected to a sealing plate (12) on one side, a circular plate (1802) being slidably connected inside the annular shells (1801), an intermediate pipe (1803) being connected to the annular shells (1801), and a fire extinguishing mechanism for extinguishing fire being provided on the sealing plate (12) away from the second hydraulic push rod (10).

7. The device for measuring the strain of the charge and the deformation of the shell of a pressurized solidified charge according to claim 6, characterized in that: The fire extinguishing mechanism comprises a nozzle (1901), the nozzle (1901) being fixedly connected to an adjacent sealing plate (12), the nozzle (1901) being electrically connected to a control panel, an intermediate shell (1902) being fixedly connected to the sealing plate (12) close to the nozzle (1901), the intermediate shell (1902) being in communication with the nozzle (1901), the intermediate shell (1902) being in communication with the annular shell (1801) via an intermediate pipe (1803), a second fixed plate (302) being fixedly connected to a carbon dioxide liquefied tank (1903), a connecting pipe (1904) being in communication between the intermediate shell (1902) and the carbon dioxide liquefied tank (1903), an electromagnetic valve being provided in the connecting pipe (1904), and the electromagnetic valve being electrically connected to the control panel.

8. The device for measuring the strain of the charge and the deformation of the shell of a pressurized solidified charge according to claim 7, characterized in that: A slide plate (1905) is slidably connected inside the intermediate shell (1902), and a third elastic element (1906) is fixedly connected between the slide plate (1905) and the intermediate shell (1902).

9. The device for measuring the strain of the charge and the deformation of the shell of a pressurized solidified charge according to claim 8, characterized in that: The space between the annular shell (1801) and the adjacent annular plate (1802) and between the intermediate shell (1902) and the slide plate (1905) is filled with liquid medium.

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