Structure for measuring compressive strength of explosive column under radial confining pressure condition

Abstract

The utility model relates to the technical field of explosive column pressure intensity detection, aims to solve the problems that in the prior art, when the compressive strength of an explosive column is detected under the confining pressure condition, time and labor are wasted, a movement mechanism is complex, and detection is tedious, and provides a structure for measuring the compressive strength of the explosive column under the radial confining pressure condition. The top of the confining pressure tank is detachably connected with a confining pressure cover; a first pressing block and a second pressing block are arranged in the confining pressure tank, the first pressing block and the second pressing block are coaxial and are distributed at intervals in the axial direction of the confining pressure tank, and the first pressing block and the second pressing block are sleeved with sealing sleeves in a sealing mode; one end of the first pressing block is fixedly connected to the inner bottom face of the confining pressure tank, a pressing rod is fixedly attached to one end of the second pressing block, and the end, away from the first pressing block, of the pressing rod penetrates through the confining pressure cover. And an injection port and a discharge port are formed in the confining pressure cover. The device has the beneficial effects that the structure is simple, the compressive strength of the explosive column under the confining pressure condition can be detected, time and labor are saved, a complicated movement mechanism is avoided, and the detection is simple.

Description

Technical Field

[0001] The utility model relates to the technical field of explosive column pressure detection, in particular to a structure for measuring the compressive strength of an explosive column under radial confining pressure conditions. Background Art

[0002] Conventional explosives are easily damaged under heavy loads, making it impossible to guarantee their compressive strength. Therefore, heavy loads necessitate the use of explosives under confined pressure to improve their compressive strength. Currently, methods for testing the compressive strength of explosives under confined pressure include sealing the explosives with a metal shell. This method measures the compressive strength under confined pressure, but does not provide the confining pressure. Furthermore, under liquid confined pressure, the contact surfaces between the ends of the explosives and the pressure-applying device must be absolutely flat and smooth. Special sealants are used to seal the contact surfaces between the ends of the explosives and the pressure-applying device. This method is time-consuming and labor-intensive, and cannot quickly test the compressive strength of explosives under confined pressure. Furthermore, the movement mechanism is complex, making testing cumbersome. Utility Model Content

[0003] The utility model aims to provide a structure for measuring the compressive strength of explosive columns under radial confining pressure conditions, so as to solve the problems in the prior art of being unable to measure the confining pressure of explosive columns under confining pressure conditions, being time-consuming and labor-intensive, having a relatively complex motion mechanism and being relatively cumbersome to measure under known confining pressure conditions.

[0004] The embodiment of the present utility model is achieved as follows:

[0005] The embodiment of the utility model provides a structure for measuring the compressive strength of explosive charge under radial confining pressure conditions, which comprises a confining pressure tank;

[0006] A confining pressure cover is provided on the top of the confining pressure tank, and the confining pressure cover is detachably connected to the top of the confining pressure tank;

[0007] A first pressing block and a second pressing block are provided inside the above-mentioned confined pressure tank. The first pressing block and the second pressing block are spaced apart from each other along the axial direction of the above-mentioned confined pressure tank. The first pressing block and the second pressing block are located on the same axis. The sealing sleeves of the first pressing block and the second pressing block are provided with sealing sleeves;

[0008] One end of the first pressing block close to the confining pressure tank is fixedly connected to the inner bottom surface of the confining pressure tank, and one end of the second pressing block close to the confining pressure cover is fixedly attached to a pressing rod, and one end of the pressing rod away from the first pressing block passes through the confining pressure cover;

[0009] The confining pressure cover is provided with an injection port and a discharge port, and both the injection port and the discharge port pass through the interior of the confining pressure tank.

[0010] During use, first, the sample is clamped between the first pressure block and the second pressure block, and the first pressure block, the second pressure block and the sample are sealed with a sealing sleeve. Then, the combination of the first pressure block, the second pressure block and the sample is placed into the interior of the confined pressure tank, so that the first pressure block is fixed on the inner bottom surface of the confined pressure tank. Secondly, the confined pressure cover is sealed and connected to the top of the confined pressure tank, and the end of the pressure rod close to the confined pressure tank is pressed against the second pressure block. High-pressure water is injected into the interior of the confined pressure tank through the injection port to achieve the purpose of measuring the compressive strength of the explosive column under confined pressure conditions. Finally, the high-pressure water is discharged through the discharge port.

[0011] The present embodiment discloses a structure for measuring the compressive strength of explosives under radial confining pressure conditions. Since a sealing sleeve is used to cover the first pressure block, the second pressure block and the sample, the sample does not need to be in contact with water. At the same time, there is no excessive requirement for the flatness of the contact surfaces at both ends of the sealed sample. The structure can quickly detect the compressive strength of explosives under confining pressure conditions, thereby making the structure for measuring the compressive strength of explosives under radial confining pressure conditions have the beneficial effects of being simple in structure, being able to detect the confining pressure of explosives under confining pressure conditions, saving time and effort under known confining pressure conditions, and having a relatively simple movement mechanism and detection.

[0012] Optionally: a plurality of first threaded holes are axially provided at the top end of the above-mentioned confining pressure tank, and a first through hole corresponding to the plurality of the above-mentioned first threaded holes is provided on the above-mentioned confining pressure cover, and a first locking screw is provided in each of the plurality of the above-mentioned first through holes, and the first locking screw passes through the above-mentioned first through hole and is threadedly connected to the inside of the above-mentioned first threaded hole.

[0013] With such arrangement, the above-mentioned confining pressure cover is fixedly connected to the above-mentioned confining pressure tank by the above-mentioned first locking screw, so that the above-mentioned confining pressure cover and the above-mentioned confining pressure tank can be disassembled from each other, which is conducive to the above-mentioned first pressing block and the second pressing block clamping the sample into the interior of the above-mentioned confining pressure tank, thereby realizing the confining pressure compressive strength test of the sample under the sealing ring.

[0014] Optionally, the plurality of first threaded holes and the plurality of first through holes are evenly distributed along the circumferential directions of the confining pressure tank and the confining pressure cover, respectively.

[0015] Such an arrangement is conducive to uniform force when the above-mentioned confining pressure tank and the above-mentioned confining pressure cover are connected to each other, making their connection tighter.

[0016] Optionally, the sealing sleeve is a rubber sleeve, which is sleeved on the outer walls of the first pressing block and the second pressing block, and the inner wall of the rubber sleeve is tightly fitted on the outer walls of the first pressing block and the second pressing block.

[0017] In this way, the first pressure block, the second pressure block and the sample are wrapped by the rubber sleeve, so that the first pressure block, the second pressure block and the sample are initially formed into a whole, thereby improving their sealing performance and preventing liquid from entering the contact surface between the sample and the pressure-applying device. At the same time, it is convenient to place the first pressure block, the second pressure block and the sample into the interior of the confining pressure tank, and at the same time, effectively prevent the first pressure block, the second pressure block and the sample from being displaced.

[0018] Optionally, a first clamp and a second clamp are sleeved on the outer wall of the rubber sleeve, and the first clamp and the second clamp are fastened to the positions of the first pressing block and the second pressing block respectively.

[0019] In this way, by locking the above-mentioned first clamp and the above-mentioned second clamp, the above-mentioned rubber sleeves on the above-mentioned first pressure block and the above-mentioned second pressure block are locked on the above-mentioned first clamp and the above-mentioned second clamp by the above-mentioned first clamp and the above-mentioned second clamp, thereby achieving a tight seal and preventing the hydraulic medium from entering along the outer surfaces of the above-mentioned first pressure block and the above-mentioned second pressure block into the end surfaces of the above-mentioned first pressure block and the above-mentioned second pressure block in contact with the sample, thereby avoiding damage to the confining pressure environment.

[0020] Optionally: a second through hole is provided at the bottom end of the above-mentioned confining pressure tank, a second threaded hole is provided on the axis of one end of the above-mentioned first pressure block close to the above-mentioned confining pressure tank, a second locking screw is provided in the above-mentioned second through hole, and the above-mentioned second locking screw passes through the above-mentioned second through hole and is threadedly connected in the above-mentioned second threaded hole.

[0021] With such arrangement, the first pressing block is fixed to the inner bottom surface of the confining pressure tank by the second locking screw, thereby preventing the first pressing block and the second pressing block from being displaced during the pressure test of the sample.

[0022] Optionally: a through hole is opened at the axis center of the above-mentioned pressure cover, the above-mentioned pressure rod is slidably located inside the above-mentioned through hole, and the end of the above-mentioned pressure rod close to the above-mentioned second pressure block has an enlarged end, and the above-mentioned enlarged end tightly presses against the above-mentioned second pressure block.

[0023] Such a setting is conducive to the axial sliding of the above-mentioned pressure rod, and is convenient for applying a quasi-static axial compression load to the above-mentioned pressure rod through a material testing machine. The above-mentioned enlarged end can provide a larger force-bearing area, avoiding the displacement of the above-mentioned second pressure block during compression. At the same time, the above-mentioned second pressure block is subjected to uniform force, thereby ensuring the accuracy of the experiment.

[0024] Optionally: a plurality of first annular sealing grooves are opened on the hole wall of the above-mentioned through hole, and a first annular sealing ring is provided in the groove of the plurality of the above-mentioned first annular sealing grooves, the outer wall of the above-mentioned first annular sealing ring is pressed against the bottom of the groove of the above-mentioned first annular sealing groove, and the inner wall of the above-mentioned first annular sealing ring is pressed against the outer wall of the above-mentioned pressure rod.

[0025] With such arrangement, the first annular sealing ring prevents the hydraulic fluid on the pressure rod from entering the interior of the confining pressure tank while not affecting the extension and contraction of the pressure rod, thereby avoiding affecting the accuracy of the pattern detection.

[0026] Optionally: a second annular sealing groove is provided on the side of the confining pressure cover close to the confining pressure tank, a second annular sealing ring is provided in the groove of the second annular sealing groove, one side of the second annular sealing ring abuts against the bottom of the second annular sealing groove, and the other side of the second annular sealing ring abuts against the top of the confining pressure tank.

[0027] With such arrangement, the confining pressure cover and the confining pressure tank are squeezed against each other, so that the second annular sealing ring is deformed in the second annular sealing groove, thereby achieving mutual sealing between the confining pressure cover and the confining pressure tank.

[0028] Optionally: a third annular sealing groove is provided on the inner bottom surface of the above-mentioned confining pressure tank, and the above-mentioned third annular sealing groove is located at a position of the above-mentioned confining pressure tank close to the above-mentioned first pressure block, the above-mentioned second through hole, the above-mentioned second threaded hole and the above-mentioned second locking screw are all located on the annular inner side of the above-mentioned third annular sealing groove, and a third annular sealing ring is provided in the groove of the above-mentioned third annular sealing groove, one side of the above-mentioned third annular sealing ring abuts against the bottom of the groove of the above-mentioned third annular sealing groove, and the other side of the above-mentioned third annular sealing ring abuts against the side of the inner bottom surface of the above-mentioned first pressure block close to the above-mentioned confining pressure tank.

[0029] In this manner, the first pressure block and the confining pressure tank are squeezed against each other, so that the third annular sealing ring is deformed in the third annular sealing groove, thereby achieving sealing, effectively preventing liquid from entering the interior of the confining pressure tank through the gap between the second through hole, the first pressure block and the inner bottom surface of the confining pressure tank, avoiding destruction of the confining pressure environment, and ensuring the accuracy of the sample compressive strength test.

[0030] In summary, the structure for measuring the compressive strength of explosive columns under radial confining pressure conditions disclosed by the utility model has the beneficial effects of being simple in structure, being able to detect the confining pressure of explosive columns under confining pressure conditions, saving time and effort under known confining pressure conditions, and having a relatively simple motion mechanism and detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present invention and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1This is a cross-sectional view of a structure for measuring the compressive strength of explosive columns under radial confining pressure conditions in an embodiment of the present utility model;

[0033] Figure 2 It is a structural schematic diagram of another embodiment of a structure for measuring the compressive strength of explosive columns under radial confining pressure conditions in an embodiment of the utility model.

[0034] Icon: 1-confining pressure tank, 2-confining pressure cover, 3-first pressure block, 4-second pressure block, 5-sealing sleeve, 6-pressure rod, 7-injection port, 8-discharge port, 9-first threaded hole, 10-first through hole, 11-first locking screw, 12-rubber sleeve, 13-first clamp, 14-second clamp, 15-second through hole, 16-second threaded hole, 17-second locking screw, 18-through hole, 19-expanded end, 20-first annular sealing groove, 21-first annular sealing ring, 22-second annular sealing groove, 23-second annular sealing ring, 24-third annular sealing groove, 25-third annular sealing ring. DETAILED DESCRIPTION

[0035] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0036] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without creative effort are also within the scope of protection of the present invention.

[0037] Example

[0038] See also Figure 1 ,This embodiment proposes a structure for measuring the compressive strength of explosive column under radial confining pressure conditions, including a confining pressure tank 1;

[0039] A confining pressure cover 2 is provided on the top of the confining pressure tank 1, and the confining pressure cover 2 is detachably connected to the top of the confining pressure tank 1;

[0040] A first pressing block 3 and a second pressing block 4 are provided inside the confining pressure tank 1. The first pressing block 3 and the second pressing block 4 are spaced apart from each other along the axial direction of the confining pressure tank 1. The first pressing block 3 and the second pressing block 4 are located on the same axis. A sealing sleeve 5 is provided on the first pressing block 3 and the second pressing block 4.

[0041] One end of the first pressing block 3 close to the confining pressure tank 1 is fixedly connected to the inner bottom surface of the confining pressure tank 1, and one end of the second pressing block 4 close to the confining pressure cover 2 is fixedly attached to a pressing rod 6, and the end of the pressing rod 6 away from the first pressing block 3 passes through the confining pressure cover 2;

[0042] The confining pressure cover 2 is provided with an injection port 7 and a discharge port 8 , and both the injection port 7 and the discharge port 8 pass through the interior of the confining pressure tank 1 .

[0043] During use, first, the sample is clamped between the first pressing block 3 and the second pressing block 4, and the sealing sleeve 5 is used to seal the first pressing block 3, the second pressing block 4 and the sample. Then, the combination of the first pressing block 3, the second pressing block 4 and the sample is placed into the interior of the confined pressure tank 1, so that the first pressing block 3 is fixed on the inner bottom surface of the confined pressure tank 1. Secondly, the confined pressure cover 2 is sealed and connected to the top of the confined pressure tank 1, and the end of the pressure rod 6 close to the confined pressure tank 1 is pressed against the second pressing block 4. High-pressure water is injected into the interior of the confined pressure tank 1 through the injection port 7 to achieve the purpose of measuring the compressive strength of the explosive column under confined pressure conditions. Finally, the high-pressure water can be discharged through the discharge port 8.

[0044] The present embodiment discloses a structure for measuring the compressive strength of explosives under radial confining pressure conditions. Since the sealing sleeve 5 is used to cover the first pressing block 3, the second pressing block 4 and the sample, the sample does not need to be in contact with water. At the same time, there is no excessive requirement for the flatness of the contact surfaces at both ends of the sealed sample. The structure can quickly detect the compressive strength of explosives under confining pressure conditions, thereby making the structure for measuring the compressive strength of explosives under radial confining pressure conditions have the beneficial effects of being simple in structure, being able to detect the confining pressure of explosives under confining pressure conditions, saving time and effort under known confining pressure conditions, and having a relatively simple movement mechanism and detection.

[0045] See also Figure 1 A plurality of first threaded holes 9 are axially opened at the top end of the confining pressure tank 1, and a first through hole 10 corresponding to the plurality of first threaded holes 9 is opened on the confining pressure cover 2. A first locking screw 11 is provided in each of the plurality of first through holes 10, and the first locking screw 11 passes through the first through hole 10 and is threadedly connected to the inside of the first threaded hole 9.

[0046] With such arrangement, the confining pressure cover 2 is fixedly connected to the confining pressure tank 1 by the first locking screw 11, so that the confining pressure cover 2 and the confining pressure tank 1 can be disassembled from each other, which is conducive to the first pressing block 3 and the second pressing block 4 clamping the sample into the interior of the confining pressure tank 1, thereby realizing the confining pressure compressive strength test of the sample under the sealing ring.

[0047] Optionally, the plurality of first threaded holes 9 and the plurality of first through holes 10 are evenly distributed along the circumferential directions of the confining pressure tank 1 and the confining pressure cover 2 , respectively.

[0048] Such an arrangement is conducive to uniform force when the confining pressure tank 1 and the confining pressure cover 2 are connected to each other, making the connection more compact.

[0049] Optionally, the sealing sleeve 5 is a rubber sleeve 12 , which is sleeved on the outer walls of the first pressing block 3 and the second pressing block 4 , and the inner wall of the rubber sleeve 12 is tightly fitted to the outer walls of the first pressing block 3 and the second pressing block 4 .

[0050] In this way, the first pressing block 3, the second pressing block 4 and the sample are wrapped by the rubber sleeve 12, so that the first pressing block 3, the second pressing block 4 and the sample are initially formed into a whole, thereby improving their sealing performance and preventing liquid from entering the contact surface between the sample and the pressure-applying device. At the same time, it is convenient to place the first pressing block 3, the second pressing block 4 and the sample into the interior of the confining pressure tank 1, and at the same time, effectively avoiding the displacement of the first pressing block 3, the second pressing block 4 and the sample.

[0051] Optionally, a first clamp 13 and a second clamp 14 are sleeved on the outer wall of the rubber sleeve 12 , and the first clamp 13 and the second clamp 14 are fastened to the positions of the first pressing block 3 and the second pressing block 4 respectively.

[0052] In this manner, by locking the first clamp 13 and the second clamp 14, the rubber sleeve 12 on the first pressure block 3 and the second pressure block 4 is locked on the first pressure block 3 and the second pressure block 4 by the first clamp 13 and the second clamp 14, thereby achieving a tight seal and preventing the hydraulic medium from flowing along the outer surfaces of the first pressure block 3 and the second pressure block 4 into the end surfaces of the first pressure block 3 and the second pressure block 4 in contact with the sample, thereby avoiding damage to the confining pressure environment.

[0053] See also Figure 1 A second through hole 15 is provided at the bottom end of the confining pressure tank 1, and a second threaded hole 16 is provided on the axis of one end of the first pressure block 3 close to the confining pressure tank 1. A second locking screw 17 is provided in the second through hole 15, and the second locking screw 17 passes through the second through hole 15 and is threadedly connected to the second threaded hole 16.

[0054] With this arrangement, the first pressing block 3 is fixed to the inner bottom surface of the confining pressure tank 1 by the second locking screw 17, thereby preventing the first pressing block 3 and the second pressing block 4 from being displaced during the pressure test of the sample.

[0055] Optionally: a through hole 18 is opened at the axis of the surrounding pressure cover 2, and the pressure rod 6 is slidably located inside the through hole 18. The end of the pressure rod 6 close to the second pressure block 4 has an enlarged end 19, and the enlarged end 19 is tightly against the second pressure block 4.

[0056] Such a setting is conducive to the axial sliding of the pressure rod 6, and is convenient for applying a quasi-static axial compression load to the pressure rod 6 through the material testing machine, and the enlarged end 19 can provide a larger force-bearing area, avoiding the displacement of the second pressure block 4 during compression. At the same time, the second pressure block 4 is subjected to uniform force, ensuring the accuracy of the experiment.

[0057] Optionally: a plurality of first annular sealing grooves 20 are opened on the hole wall of the through hole 18, and a first annular sealing ring 21 is provided in each of the first annular sealing grooves 20. The outer wall of the first annular sealing ring 21 abuts against the bottom of the first annular sealing groove 20, and the inner wall of the first annular sealing ring 21 abuts against the outer wall of the pressure rod 6.

[0058] With such arrangement, the first annular sealing ring 21 prevents the hydraulic fluid on the pressure rod 6 from entering the interior of the confining pressure tank 1 while not affecting the extension and contraction of the pressure rod 6 , thereby avoiding affecting the accuracy of the pattern detection.

[0059] Optionally: a second annular sealing groove 22 is opened on the side of the confining pressure cover 2 close to the confining pressure tank 1, and a second annular sealing ring 23 is provided in the groove of the second annular sealing groove 22, one side of the second annular sealing ring 23 abuts against the bottom of the second annular sealing groove 22, and the other side of the second annular sealing ring 23 abuts against the top of the confining pressure tank 1.

[0060] With such arrangement, the confining pressure cover 2 and the confining pressure tank 1 are squeezed against each other, so that the second annular sealing ring 23 is deformed in the second annular sealing groove 22 , thereby achieving mutual sealing between the confining pressure cover 2 and the confining pressure tank 1 .

[0061] See also Figure 1 A third annular sealing groove 24 is provided on the inner bottom surface of the confining pressure tank 1. The third annular sealing groove 24 is located at a position of the confining pressure tank 1 close to the first pressure block 3. The second through hole 15, the second threaded hole 16 and the second locking screw 17 are all located on the annular inner side of the third annular sealing groove 24. A third annular sealing ring 25 is provided in the third annular sealing groove 24. One side of the third annular sealing ring 25 abuts against the bottom of the third annular sealing groove 24, and the other side of the third annular sealing ring 25 abuts against the side of the inner bottom surface of the first pressure block 3 close to the confining pressure tank 1.

[0062] With such a configuration, the first pressure block 3 and the confining pressure tank 1 are squeezed against each other, so that the third annular sealing ring 25 is deformed in the third annular sealing groove 24, thereby achieving sealing, effectively preventing liquid from entering the interior of the confining pressure tank 1 through the gap between the second through hole 15, the first pressure block 3 and the inner bottom surface of the confining pressure tank 1, avoiding destruction of the confining pressure environment, and ensuring the accuracy of the sample compressive strength test.

[0063] See also Figure 1 In this embodiment, the entire structure is made of stainless steel, which is safe and reliable.

[0064] See also Figure 1 In this embodiment, the rubber sleeve 12, the first clamp 13 and the second clamp 14 are used to seal the sample. Compared with the prior art in which the contact surface between the sample and the first pressing block 3 and the second pressing block 4 is sealed by special watering, this technical solution is simpler and faster.

[0065] See also Figure 1 Specific steps for using the structure for measuring the compressive strength of explosive charge under radial confining pressure in this embodiment are as follows:

[0066] First, clamp the sample between the first pressure block 3 and the second pressure block 4, and use the rubber sleeve 12 to seal the first pressure block 3, the second pressure block 4 and the sample. Then, use the first clamp 13 and the second clamp 14 to fasten the rubber sleeve 12 on the outside of the first pressure block 3 and the second pressure block 4 respectively, so that the sample forms a seal in the rubber sleeve 12 to prevent the hydraulic medium from entering the end surface of the first pressure block 3 and the second pressure block 4 that contacts the sample and destroying the confining pressure environment. Put the combination of the first pressure block 3, the second pressure block 4 and the sample into the interior of the confining pressure tank 1, so that the first pressure block 3 is fixed on the inner bottom surface of the confining pressure tank 1. Secondly, the confining pressure cover 2 is passed through It is sealed and connected to the top of the confining pressure tank 1 through several first locking screws 11, and the expanded end 19 of the pressure rod 6 close to the confining pressure tank 1 is pressed against the second pressure block 4. High-pressure water is injected into the interior of the confining pressure tank 1 through the injection port 7. The assembled confining pressure test device is placed on the material testing machine, and a quasi-static axial compression load is applied by the material testing machine until the specimen is destroyed. The maximum load that it can withstand per unit cross-sectional area is the confining pressure compressive strength, and the first annular sealing ring 21, the second annular sealing ring 23 and the third annular sealing ring 25 can improve the sealing of the confining pressure tank 1. Finally, the high-pressure water can be discharged through the discharge port 8.

[0067] See also Figure 1 and Figure 2 In combination with the above embodiment, in another embodiment, one end of the first pressing block 3 close to the inner bottom surface of the confining pressure tank 1 directly presses against the inner bottom surface of the confining pressure tank 1, which effectively simplifies the overall structure of the equipment and improves the use efficiency.

[0068] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A structure for measuring the compressive strength of explosive columns under radial confining pressure conditions, characterized in that: Including a confining pressure tank (1); A confining pressure cover (2) is provided on the top of the confining pressure tank (1), and the confining pressure cover (2) is detachably connected to the top of the confining pressure tank (1); A first pressing block (3) and a second pressing block (4) are provided inside the confining pressure tank (1); the first pressing block (3) and the second pressing block (4) are spaced apart from each other along the axial direction of the confining pressure tank (1); the first pressing block (3) and the second pressing block (4) are located on the same axis; and a sealing sleeve (5) is provided for the first pressing block (3) and the second pressing block (4); One end of the first pressing block (3) close to the confining pressure tank (1) is fixedly connected to the inner bottom surface of the confining pressure tank (1); one end of the second pressing block (4) close to the confining pressure cover (2) is fixedly attached to a pressing rod (6); and one end of the pressing rod (6) away from the first pressing block (3) passes through the confining pressure cover (2); The confining pressure cover (2) is provided with an injection port (7) and a discharge port (8), and both the injection port (7) and the discharge port (8) pass through the interior of the confining pressure tank (1).

2. The structure for measuring the compressive strength of explosive charge under radial confining pressure according to claim 1, characterized in that: A plurality of first threaded holes (9) are axially provided at the top end of the confining pressure tank (1), and first through holes (10) corresponding to the plurality of first threaded holes (9) are provided on the confining pressure cover (2). First locking screws (11) are provided in each of the plurality of first through holes (10), and the first locking screws (11) pass through the first through holes (10) and are threadedly connected to the interior of the first threaded holes (9).

3. The structure for measuring the compressive strength of explosive charge under radial confining pressure according to claim 2, characterized in that: The plurality of first threaded holes (9) and the plurality of first through holes (10) are evenly distributed along the circumferential directions of the confining pressure tank (1) and the confining pressure cover (2), respectively.

4. The structure for measuring the compressive strength of explosive charge under radial confining pressure according to claim 1, characterized in that: The sealing sleeve (5) is a rubber sleeve (12), and the rubber sleeve (12) is sleeved on the outer walls of the first pressing block (3) and the second pressing block (4), and the inner wall of the rubber sleeve (12) is tightly fitted on the outer walls of the first pressing block (3) and the second pressing block (4).

5. The structure for measuring the compressive strength of explosive charge under radial confining pressure according to claim 4, characterized in that: A first clamping hoop (13) and a second clamping hoop (14) are sleeved on the outer wall of the rubber sleeve (12); the first clamping hoop (13) and the second clamping hoop (14) are respectively fastened to the positions of the first pressing block (3) and the second pressing block (4).

6. The structure for measuring the compressive strength of explosive charge under radial confining pressure according to claim 1, characterized in that: A second through hole (15) is provided at the bottom end of the confining pressure tank (1), a second threaded hole (16) is provided on the axis of one end of the first pressure block (3) close to the confining pressure tank (1), a second locking screw (17) is provided in the second through hole (15), and the second locking screw (17) passes through the second through hole (15) and is threadedly connected in the second threaded hole (16).

7. The structure for measuring the compressive strength of explosive charge under radial confining pressure according to claim 1, characterized in that: A through hole (18) is provided at the axis of the confining pressure cover (2), and the pressure rod (6) is slidably located inside the through hole (18). The pressure rod (6) has an enlarged end (19) at one end close to the second pressure block (4), and the enlarged end (19) is tightly pressed against the second pressure block (4).

8. The structure for measuring the compressive strength of explosive charge under radial confining pressure according to claim 7, characterized in that: A plurality of first annular sealing grooves (20) are provided on the wall of the through hole (18), and a first annular sealing ring (21) is provided in each of the plurality of first annular sealing grooves (20). The outer wall of the first annular sealing ring (21) abuts against the bottom of the first annular sealing groove (20), and the inner wall of the first annular sealing ring (21) abuts against the outer wall of the pressure rod (6).

9. The structure for measuring the compressive strength of explosive charge under radial confining pressure according to claim 1, characterized in that: A second annular sealing groove (22) is provided on a side of the confining pressure cover (2) close to the confining pressure tank (1), and a second annular sealing ring (23) is provided in the groove of the second annular sealing groove (22), one side of the second annular sealing ring (23) abuts against the bottom of the second annular sealing groove (22), and the other side of the second annular sealing ring (23) abuts against the top of the confining pressure tank (1).

10. The structure for measuring the compressive strength of explosive charge under radial confining pressure according to claim 6, characterized in that: A third annular sealing groove (24) is provided on the inner bottom surface of the confining pressure tank (1), and the third annular sealing groove (24) is located at a position of the confining pressure tank (1) close to the first pressure block (3). The second through hole (15), the second threaded hole (16) and the second locking screw (17) are all located on the annular inner side of the third annular sealing groove (24). A third annular sealing ring (25) is provided in the groove of the third annular sealing groove (24), and one side of the third annular sealing ring (25) abuts against the bottom of the third annular sealing groove (24), and the other side of the third annular sealing ring (25) abuts against one side of the inner bottom surface of the first pressure block (3) close to the confining pressure tank (1).

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