Separated full-size ammunition slow cook-off test equipment

Abstract

The invention discloses separated full-size ammunition low-speed cook-off test equipment which comprises an air circulation heating system, a heat preservation box and a control system. The air circulation heating system and the heat preservation box are isolated by a blindage, and when the tested object explodes, the control system and the circulation heating system are protected by the blindage; the air circulation heating system is connected with the heat preservation box through an air supply duct and an air return duct. Testing instruments distributed in the heat preservation box and an observation window arranged on the heat preservation box are used for monitoring the state of the tested object; the air circulation heating system is controlled by the control system; a to-be-tested object is placed on a to-be-tested object support in the heat preservation box, air duct automatic locking protection mechanisms are arranged at the connecting positions of the heat preservation box and the air supply duct and the connecting positions of the heat preservation box and the air return duct respectively, and two locks are formed for ports of the air supply duct and the air return duct through a gravity baffle and a pressure baffle respectively. And impact waves and smoke are prevented from influencing the circulating heating system through the air supply duct and the air return duct.

Description

Technical Field

[0001] The invention relates to the field of ammunition safety testing, and is used for realizing a whole-bomb slow cooking test function, in particular to a separate full-size ammunition slow cooking test device. Background Art

[0002] Traditional slow baking test equipment is divided into two categories. One type uses a method of directly wrapping the ammunition with electric heating wire to heat it. When the ammunition explodes, only the heating end is destroyed and the control system remains intact. However, the ammunition heating environment generated by this method is quite different from the test requirements. The other type is only for explosive samples or scaled models, and rarely for full-size ammunition. The reason is that the explosion reaction that may occur during the full-size ammunition test is extremely destructive. Once an explosion reaction occurs, the test equipment will be completely destroyed, the test cost is high, and the test cycle is long. Summary of the invention

[0003] The purpose of the present invention is to provide a separate full-size ammunition slow baking test equipment to solve the problems of temperature environment difference, risk control and cost in the prior art.

[0004] In order to achieve the above tasks, the present invention adopts the following technical solutions:

[0005] A separate full-size ammunition slow cooking test equipment comprises an air circulation heating system, a heat preservation box and a control system; the air circulation heating system and the heat preservation box are arranged in a test site and separated by a shelter, and when the test object explodes, the shelter is used to protect the control system and the circulation heating system;

[0006] The air circulation heating system is connected to the insulated box through the air supply duct and the return air duct. The air is heated by the heater and sent to the insulated box through the air supply duct for heat exchange. The air after heat exchange returns to the air circulation heating system from the return air duct to form a hot air heating cycle. The test sample arranged in the insulated box is provided with a heating environment by the heated air, and the state of the test sample is monitored by the test instruments and observation windows distributed in the insulated box. The air circulation heating system is controlled by the control system.

[0007] The test sample is placed on the test sample support in the thermal insulation box, and the observation window, pressure relief hole and test hole are arranged on the thermal insulation box; an air duct automatic locking protection mechanism is arranged at the connection between the thermal insulation box and the air supply duct and the return air duct, and the mechanism forms two locks on the ports of the air supply duct and the return air duct respectively through a gravity baffle and a pressure baffle to prevent shock waves and smoke from affecting the circulating heating system through the air supply duct and the return air duct.

[0008] Furthermore, the shelter includes an explosion-proof wall vertically arranged on the test site, and the heat preservation box and the air circulation heating system are respectively located on both sides of the explosion-proof wall; a group of air duct holes are opened on the explosion-proof wall, respectively used for passing the supply air duct and the return air duct.

[0009] Furthermore, the control system is used to receive monitoring information from the test instrument and control the programmable controller at the same time, including using the programmable controller to control the air supply temperature of the circulating heating system and frequency conversion to adjust the wind speed of the centrifugal fan in the circulating heating system to form air circulation.

[0010] Furthermore, the heat preservation box is a rectangular body structure, and the heat preservation box is installed on a base frame; the heat preservation box adopts a frame support structure, and the side wall of the heat preservation box includes two layers of thin plates, inner and outer layers, and the middle is filled with heat preservation material;

[0011] The test sample support is installed on the bottom side of the incubator, the observation window is set on the front side of the incubator, and multiple layers of tempered glass are set on the observation window. LED lighting is set at the edge of the observation window; the pressure relief holes are distributed on the four sides of the incubator, front, back, left and right, for rapid pressure relief after the test sample explodes; the test hole is opened on the front side of the incubator for the installation of the test instrument; the pressure relief hole and the test hole are filled with insulation material during the test.

[0012] Furthermore, the test sample support seat includes a guide rail arranged at the bottom of the incubator and a V-shaped bracket installed on the guide rail. The test sample is fixed to the V-shaped bracket by a locking device. The position of the test sample can be adjusted by the guide rail according to the size of the test sample, which is suitable for test samples of different calibers.

[0013] Furthermore, air supply ports and return air ports are symmetrically provided on the left and right sides of the thermal insulation box, which are respectively used to connect the air supply duct and the return air duct; an air duct automatic locking protection mechanism is installed on the air supply port and the return air duct, and the air duct automatic locking protection mechanism is in an open state during normal heating during the test process; and when the test product in the thermal insulation box explodes, the air duct automatic locking protection mechanism quickly closes the air supply duct and the return air duct under the action of the shock wave, thereby preventing the shock wave and smoke from entering the circulating heating system through the air supply duct and the return air duct.

[0014] Furthermore, the test product can be installed in the thermal insulation box through the air supply port and the return air port before the air supply port and the return air port are connected to the air supply duct and the return air duct, or can be installed by designing an openable and closable top cover on the top surface of the thermal insulation box.

[0015] Furthermore, the automatic locking protection mechanism of the air duct at the air supply outlet includes a circle of through holes distributed around the air supply outlet of the insulation box, and slidable support rods are respectively installed in the through holes; one end of all the support rods located in the insulation box is commonly connected to a pressure baffle, and a pre-stressed spring is mounted on the support rod, one end of the spring is supported on the inner wall of the insulation box, and the other end is supported on the pressure baffle; by adjusting the pre-stressed spring, the pressure baffle is opened to a preset distance from the air supply outlet, and the air supply outlet is in an open state.

[0016] Furthermore, a section of plug-in tube for connecting with the air supply duct is arranged on the air supply outlet, a rotatable gravity baffle is installed inside the plug-in tube through a rotating shaft, and a gravity hammer is connected to the gravity baffle through a suspension line; a limit rod perpendicular to the support rod is arranged on one end of one of the support rods located outside the incubator, and when the air supply outlet is in an open state, the gravity baffle is rotated to a horizontal state along the axial direction of the plug-in tube, and then the end of the limit rod is supported on the edge of the gravity baffle, and under the joint action of the gravity hammer and the limit rod, the position of the gravity baffle remains horizontal and stable; when the test product in the incubator reacts violently, the pressure in the incubator increases instantaneously, and the airflow pushes the pressure baffle close to the inner wall of the incubator to close the air supply outlet, thereby realizing the closure of the first air duct; during the movement of the pressure baffle, the support rod is driven to move horizontally, so that the limit rod is out of contact with the gravity baffle, and then under the action of the gravity hammer, the gravity baffle flips over to close the inside of the plug-in tube, thereby realizing the closure of the second air duct.

[0017] Furthermore, the preset distance is at least 200 mm.

[0018] Compared with the prior art, the present invention has the following technical features:

[0019] The present invention is the first device in China to use the air circulation heating principle to conduct a whole-bomb slow baking test. The device uses air circulation heating, and the ammunition heating environment generated can better meet the test requirements. During the test, the ammunition is isolated from the main structure of the test equipment. When the ammunition explodes, only the heat preservation box is destroyed, and the main unit and control system of the device can be reused, which greatly reduces the test cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention;

[0021] Figure 2 It is a structural schematic diagram of the heat preservation box;

[0022] Figure 3 A front view of an incubator in one embodiment of the present invention;

[0023] Figure 4 A longitudinal cross-sectional schematic diagram of an incubator in one embodiment of the present invention;

[0024] Figure 5 It is a schematic diagram of the air duct automatic locking protection mechanism at the air supply outlet being in an open state;

[0025] Figure 6 It is a schematic diagram showing that the automatic locking protection mechanism of the air duct at the air supply outlet is in a locked state.

[0026] Explanation of numbers in the figure: 1 air circulation heating system, 2 insulation box, 3 control system, 4 shelter, 5 air supply duct, 6 return air duct, 61 observation window, 62 pressure relief hole, 63 base frame, 64 test hole, 65 plug-in tube, 66 support rod, 67 air supply port, 68 pressure baffle, 69 V-type bracket, 610 guide rail, 611 pre-load spring, 612 gravity baffle, 613 limit rod, 614 gravity hammer. DETAILED DESCRIPTION

[0027] See attached Figure 1 The present invention provides a separate full-size ammunition slow baking test equipment, including an air circulation heating system 1, an insulation box 2 and a control system 3; the air circulation heating system 1 and the insulation box 2 are arranged in a test site, and the two are isolated by a shelter 4. When the test object explodes, the shelter 4 is used to protect the control system 3 and the circulation heating system.

[0028] The air circulation heating system 1 is connected to the thermal insulation box 2 via the air supply duct 5 and the return air duct 6. The air is heated by the heater and sent to the thermal insulation box 2 via the air supply duct 5 for heat exchange. The air after heat exchange returns to the air circulation heating system 1 from the return air duct 6, forming a hot air heating cycle. The test sample arranged in the thermal insulation box 2 is provided with a heating environment by the heated air, and the state of the test sample is monitored by the test instruments and the observation window 61 distributed in the thermal insulation box 2. The air circulation heating system 1 is controlled by the control system 3.

[0029] The test sample is placed on the test sample support in the thermal insulation box 2, and the observation window 61, the pressure relief hole 62, and the test hole 64 are provided on the thermal insulation box 2; an air duct automatic locking protection mechanism is provided at the connection between the thermal insulation box 2 and the air supply duct 5 and the return air duct 6, and the mechanism forms two locks on the ports of the air supply duct 5 and the return air duct 6 through the gravity baffle 612 and the pressure baffle 68, respectively, to prevent shock waves and smoke from passing through the air supply duct 5 and the return air duct 6 to affect the circulating heating system.

[0030] As a further explanation of the above technical solution, see the attached Figure 1In an embodiment of the present invention, the shelter 4 includes an explosion-proof wall vertically arranged on the test site, and the insulated box 2 and the air circulation heating system 1 are respectively located on both sides of the explosion-proof wall; a group of air duct holes are opened on the explosion-proof wall, which are respectively used to pass through the supply air duct 5 and the return air duct 6; using the explosion-proof wall, when the test object explodes, the shock wave is isolated by the explosion-proof wall on the one hand, and is blocked by the automatic locking protection mechanism arranged in the supply air duct 5 and the return air duct 6 on the other hand, without affecting the air circulation heating system 1 and the control system 3 on the other side, so that the air circulation heating system 1 and the control system 3 can be reused, effectively reducing the test cost.

[0031] The control system 3 is used to receive monitoring information from test instruments (such as temperature sensors, pressure sensors, etc.) and control the programmable controller, including using the programmable controller to control the air supply temperature of the circulating heating system and frequency conversion to adjust the wind speed of the centrifugal fan in the circulating heating system to form air circulation.

[0032] See attached Figures 2 to 4 The insulated box 2 described in this scheme is a rectangular body structure, and the insulated box 2 is installed on the base frame 63; in order to achieve cost reduction, rapid pressure relief and insulation functions, the insulated box 2 adopts a frame support structure, and the side wall of the insulated box 2 includes two layers of thin plates inside and outside, and the middle is filled with insulation material; the test sample support seat is installed on the inner bottom side of the insulated box 2, and the observation window 61 is arranged on the front side of the insulated box 2. The observation window 61 is provided with multiple layers of tempered glass, and an LED lighting lamp is arranged at the edge of the observation window 61 for real-time monitoring of the state of the test sample; the pressure relief holes 62 are distributed on the four sides of the insulated box 2, front, back, left and right, for rapid pressure relief after the test sample explodes; the test hole 64 is opened on the front side of the insulated box 2 for the installation of the test instrument; the pressure relief hole 62 and the test hole 64 are filled with insulation material during the test.

[0033] Optionally, in one embodiment of the present invention, the test sample support seat includes a guide rail 610 arranged at the bottom of the incubator 2 and a V-shaped bracket 69 installed on the guide rail 610. The test sample is fixed to the V-shaped bracket 69 by a locking device. The position of the test sample can be adjusted by the guide rail 610 according to the size of the test sample, which is suitable for test sample bullets of different calibers.

[0034] The left and right sides of the thermal insulation box 2 are symmetrically provided with air supply ports 67 and return air ports, which are respectively used to connect the air supply duct 5 and the return air duct 6 by plug-in means; the air duct automatic locking protection mechanism is installed on the air supply port 67 and the return air port. During the test, the air duct automatic locking protection mechanism is in the open state during normal heating. When the test product in the thermal insulation box 2 explodes, the air duct automatic locking protection mechanism quickly closes the air supply duct 5 and the return air duct 6 under the action of the shock wave, thereby preventing the shock wave and smoke from entering the circulating heating system through the air supply duct 5 and the return air duct 6.

[0035] In this solution, the test product can be installed in the insulation box 2 through the air supply port 67 and the return air port before being connected to the air supply duct 5 and the return air duct 6, or it can be installed by designing an openable and closable top cover on the top surface of the insulation box 2.

[0036] See attached Figure 5 and Figure 6 , the automatic locking protection mechanism of the air duct at the air supply port 67 is taken as an example for explanation.

[0037] The automatic locking protection mechanism of the air duct at the air supply outlet 67 includes a circle of through holes distributed around the air supply outlet 67 of the insulation box 2, and slidable support rods 66 are respectively installed in the through holes; one end of all the support rods 66 located in the insulation box 2 is commonly connected to the pressure baffle 68, and a pre-stressed spring 611 is mounted on the support rod 66, one end of the spring 611 is supported on the inner wall of the insulation box 2, and the other end is supported on the pressure baffle 68; by adjusting the pre-stressed spring 611, the pressure baffle 68 is propped open to a position at least 200 mm away from the air supply outlet 67 (i.e., the inner wall of the insulation box 2), so that the air supply outlet 67 is in an open state, so as to ensure smooth air intake during normal heating during the test.

[0038] A section of plug-in tube 65 for connecting with the air supply duct 5 is arranged on the air supply port 67, a rotatable gravity baffle 612 is installed inside the plug-in tube 65 through a rotating shaft, and a gravity hammer 614 is connected to the gravity baffle 612 through a suspension line; a limiting rod 613 perpendicular to the support rod 66 is arranged at one end of one of the support rods 66 located outside the incubator 2, when the air supply port 67 is in an open state, the gravity baffle 612 is rotated to a horizontal state along the axial direction of the plug-in tube 65, and then the end of the limiting rod 613 is supported on the edge of the gravity baffle 612, and under the joint action of the gravity hammer 614 and the limiting rod 613, the position of the gravity baffle 612 is maintained Maintain horizontal stability so that the gravity baffle 612 will not affect the air intake of the insertion tube 65; when the test product in the insulation box 2 reacts violently, the pressure in the insulation box 2 increases instantaneously, and the airflow pushes the pressure baffle 68 close to the inner wall of the insulation box 2 to close the air supply port 67, thereby locking the first air duct; during the movement of the pressure baffle 68, the support rod 66 is driven to move horizontally, so that the limit rod 613 is out of contact with the gravity baffle 612, and then under the action of the gravity hammer 614, the gravity baffle 612 flips 90° to close the insertion tube 65 (the shape of the gravity baffle 612 matches the cross-sectional shape of the insertion tube 65), thereby locking the second air duct.

[0039] By automatically locking the two air ducts, shock waves, smoke, etc. can be effectively prevented from entering the air circulation heating system 1, reducing the test cost; the structure of the air duct automatic locking protection mechanism at the return air duct 6 is the same as that at the supply air duct 5, and will not be repeated here. The present invention has achieved good results through actual application tests.

[0040] The above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the present application.

Claims

1. A separate full-size ammunition slow cooking test equipment, characterized in that: The invention comprises an air circulation heating system (1), an insulation box (2) and a control system (3); the air circulation heating system (1) and the insulation box (2) are arranged in a test site and separated by a shelter (4); when the test object explodes, the shelter (4) is used to protect the control system (3) and the circulation heating system; The air circulation heating system (1) is connected to the thermal insulation box (2) via an air supply duct (5) and an air return duct (6); the air is heated by a heater and sent into the thermal insulation box (2) via the air supply duct (5) for heat exchange; the air after heat exchange returns to the air circulation heating system (1) from the air return duct (6), thus forming a hot air heating cycle; the test object arranged in the thermal insulation box (2) is provided with a heating environment by the heated air, and the state of the test object is monitored by the test instruments and observation windows (61) distributed in the thermal insulation box (2); the air circulation heating system (1) is controlled by the control system (3); The test sample is placed on a test sample support in the heat preservation box (2), and the heat preservation box (2) is provided with the observation window (61), the pressure relief hole (62), and the test hole (64); an air duct automatic locking protection mechanism is provided at the connection between the heat preservation box (2) and the air supply duct (5) and the air return duct (6), and the mechanism forms two locks on the ports of the air supply duct (5) and the air return duct (6) respectively through a gravity baffle (612) and a pressure baffle (68), so as to prevent shock waves and smoke from passing through the air supply duct (5) and the air return duct (6) to affect the circulating heating system.

2. The detachable full-size ammunition slow cooking test equipment according to claim 1 is characterized in that: The shelter (4) comprises an explosion-proof wall vertically arranged on the test site, and the heat preservation box (2) and the air circulation heating system (1) are respectively located on both sides of the explosion-proof wall; a group of air duct holes are opened on the explosion-proof wall, respectively used for passing the air supply duct (5) and the return air duct (6).

3. The detachable full-size ammunition slow cooking test equipment according to claim 1, characterized in that: The control system (3) is used to receive monitoring information from the test instrument and control the programmable controller at the same time, including using the programmable controller to control the air supply temperature of the circulation heating system and frequency conversion to adjust the wind speed of the centrifugal fan in the circulation heating system to form air circulation.

4. The detachable full-size ammunition slow cooking test equipment according to claim 1, characterized in that: The heat preservation box (2) is a rectangular structure, and the heat preservation box (2) is installed on a base frame (63); the heat preservation box (2) adopts a frame support structure, and the side wall of the heat preservation box (2) includes two layers of thin plates, inner and outer layers, and the middle is filled with heat preservation material; The test object support seat is installed on the inner bottom side of the heat preservation box (2); the observation window (61) is arranged on the front side of the heat preservation box (2); the observation window (61) is provided with multiple layers of tempered glass; and an LED lighting lamp is arranged at the edge of the observation window (61); the pressure relief holes (62) are distributed on the four sides of the heat preservation box (2) in front, back, left and right, and are used for rapid pressure relief after the test object explodes; the test hole (64) is opened on the front side of the heat preservation box (2) and is used for installing a test instrument; the pressure relief hole (62) and the test hole (64) are filled with heat preservation material during the test.

5. The detachable full-size ammunition slow cooking test equipment according to claim 4, characterized in that: The test object support seat comprises a guide rail (610) arranged at the bottom of the heat preservation box (2) and a V-shaped bracket (69) mounted on the guide rail (610); the test object is fixed on the V-shaped bracket (69) by a locking device; the position of the test object can be adjusted by the guide rail (610) according to the size of the test object, and is suitable for test objects of different calibers.

6. The detachable full-size ammunition slow cooking test equipment according to claim 1, characterized in that: The left and right sides of the heat preservation box (2) are symmetrically provided with air supply ports (67) and air return ports, which are used to connect the air supply duct (5) and the air return duct (6) respectively; an air duct automatic locking protection mechanism is installed on the air supply port (67) and the air return duct; during the test process, the air duct automatic locking protection mechanism is in an open state during normal heating; when the test object in the heat preservation box (2) explodes, the air duct automatic locking protection mechanism quickly closes the air supply duct (5) and the air return duct (6) under the action of the shock wave, thereby preventing the shock wave and smoke from entering the circulating heating system through the air supply duct (5) and the air return duct (6).

7. The detachable full-size ammunition slow cooking test equipment according to claim 1, characterized in that: The test product can be installed in the heat preservation box (2) through the air supply port (67) and the air return port before the air supply port (67) and the air return port are connected to the air supply duct (5) and the air return duct (6), or can be installed by designing an openable and closable top cover on the top surface of the heat preservation box (2).

8. The detachable full-size ammunition slow cooking test equipment according to claim 1, characterized in that: The air duct automatic locking protection mechanism at the air supply port (67) comprises a circle of through holes distributed around the air supply port (67) of the heat preservation box (2), wherein slidable support rods (66) are respectively installed in the through holes; one end of all the support rods (66) located in the heat preservation box (2) is commonly connected to the pressure baffle (68), and a pre-stress spring (611) is mounted on the support rod (66), one end of the spring (611) is supported on the inner wall of the heat preservation box (2), and the other end is supported on the pressure baffle (68); by adjusting the pre-stress spring (611), the pressure baffle (68) is opened to a preset distance from the air supply port (67), and the air supply port (67) is in an open state.

9. The detachable full-size ammunition slow cooking test equipment according to claim 8, characterized in that: A plug-in tube (65) for connecting to the air supply duct (5) is arranged on the air supply port (67), a rotatable gravity baffle (612) is installed inside the plug-in tube (65) via a rotating shaft, and a gravity hammer (614) is connected to the gravity baffle (612) via a suspension line; a limit rod (613) perpendicular to the support rod (66) is arranged at one end of one of the support rods (66) located outside the heat preservation box (2); when the air supply port (67) is in an open state, the gravity baffle (612) is rotated to a horizontal state along the axial direction of the plug-in tube (65), and then the end of the limit rod (613) is supported on the edge of the gravity baffle (612), and the gravity baffle (614) is rotated to a horizontal state along the axial direction of the plug-in tube (65), and then the end of the limit rod (613) is supported on the edge of the gravity baffle (612), and the gravity baffle (614) is rotated to a horizontal state along the axial direction of the plug-in tube (65). Under the joint action of the hammer (614) and the limit rod (613), the position of the gravity baffle (612) remains horizontal and stable; when the test product in the heat preservation box (2) reacts violently, the pressure in the heat preservation box (2) increases instantaneously, and the airflow pushes the pressure baffle (68) close to the inner wall of the heat preservation box (2), closing the air supply port (67) to achieve the closure of the first air duct; during the movement of the pressure baffle (68), the support rod (66) is driven to move horizontally, so that the limit rod (613) and the gravity baffle (612) are out of contact, and then under the action of the gravity hammer (614), the gravity baffle (612) flips to close the insertion tube (65), thereby achieving the closure of the second air duct.

10. The detachable full-size ammunition slow cooking test equipment according to claim 8, characterized in that: The preset distance is at least 200 mm.

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