Special reactor for explosive long-term storage stability test system

Abstract

The invention provides a special reactor for an explosive long-term storage stability test system, which comprises a constant-volume reaction tube with an open top, an opening of the constant-volume reaction tube is covered with a gas guide head through a fastening nut, and sealing rings are respectively arranged between the constant-volume reaction tube and the fastening nut and between the constant-volume reaction tube and the gas guide head; the air guide head is communicated with the lower end of the capillary pressure conduction pipe; the capillary pressure conduction pipe is coated with a reinforcing layer, and the upper section of the reinforcing layer is provided with a cooling fin. And communicating holes are radially formed in the side wall of the reinforcing layer between the radiating fins. The special reactor disclosed by the invention can ensure that dangerous samples such as explosives and powders have enough placement space in the test process, is good in sealing performance, and can ensure that gas released by constant-temperature decomposition of the samples is completely guided into the pressure measurement module.

Description

Technical Field

[0001] This invention belongs to the field of explosives technology and relates to explosives performance testing, specifically to a reactor specifically designed for a long-term storage stability testing system for explosives. Background Technology

[0002] The long-term storage stability testing system for explosives is a pressure-dynamic monitoring-based instrument for testing the long-term storage stability of explosives. Its working principle is to characterize the decomposition reaction process of the explosive within a highly sealed reactor under isothermal conditions by measuring the pressure changes within that reactor, thereby achieving stability evaluation. The testing system is based on a long-term, highly stable, low-fluctuation isothermal control module, with a highly sealed reactor, a microstructure for transmitting decomposition gas pressure, and a low-time-drift, high-precision pressure measurement unit as its core components, supplemented by a high-precision data acquisition and processing circuit module and a display control unit. Different isothermal environments can be set, and the pressure (Pap) and temperature (T) data of the sample within the testing system can be measured and recorded in real time, establishing a curve (t, Pap) showing the change in the decomposition gas product generation rate over time. In use, a certain mass of the test sample is placed in a constant-volume reactor, sealed, and then placed in a heating furnace for isothermal heating. The pressure of the decomposition gas in the sample is measured during the isothermal heating process; this thermal decomposition test process is a constant-volume reaction process. Assuming the initial amount of gaseous material in the reactor is m0 when no gunpowder sample is loaded, and the initial pressure in the reactor is P0 at room temperature T0; as the gaseous material in the reactor is heated to a preset temperature Ts, the gas in the reactor expands due to heat, and the pressure of the gaseous material in the reactor also increases accordingly and gradually tends to stabilize over time. When a solid gunpowder sample is placed in the reactor, after being heated at a constant temperature for a period of time, the sample decomposes and releases gaseous products. The observed value of the partial pressure formed by the decomposed gas is ΔPap = Pap - P0. The change of this value over time can reflect the stability of the explosive. Summary of the Invention

[0003] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a reactor specifically for a long-term storage stability testing system for explosives, thereby solving the technical problem that the accuracy of stability testing in the existing technology needs to be further improved.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: A reactor specifically designed for a long-term storage stability testing system for explosives includes a top-open constant-volume reaction tube. A gas guide head is fitted onto the opening of the constant-volume reaction tube by a fastening nut. Sealing rings are provided between the constant-volume reaction tube and the fastening nut, and between the constant-volume reaction tube and the gas guide head. The gas guide head is connected to the lower end of a capillary pressure transmission tube. The capillary pressure transmission tube is covered with a reinforcing layer, and the upper section of the reinforcing layer is configured as a heat sink.

[0005] A connecting hole is radially formed on the sidewall of the reinforcing layer between the heat sinks.

[0006] The constant-volume reaction tube is cylindrical with an inner diameter of 8.5 mm, an outer diameter of 20 mm, a height of 110 mm, a bottom thickness of 2 mm, and an internal volume of 25 ml ± 0.5 ml, used to hold explosive samples.

[0007] The constant volume reaction tube, fastening nut, capillary pressure transmission tube, reinforcing layer and heat sink are made of stainless steel; the sealing ring is made of fluororubber or soft aluminum.

[0008] Compared with the prior art, the present invention has the following technical effects: (I) The special reactor of the present invention can ensure that there is enough space for dangerous samples of explosives during the test process, and has good sealing performance, which can ensure that the gas released from the constant temperature decomposition of the sample is completely discharged into the pressure measurement module.

[0009] (II) The internal volume of the dedicated reactor of the present invention is determined by constant volume, ensuring that the test results are comparable to those of the traditional gas measurement method.

[0010] (III) The reinforced structure and spiral heat dissipation structure of the special reactor design of the present invention can ensure gas conduction while reducing the stress at the welding point, extending the service life of the reactor and improving the connection efficiency between the reactor and the pressure measurement module. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of the long-term storage stability testing system for explosives.

[0012] Figure 2 This is a schematic diagram of the internal structure of a long-term storage stability testing system for explosives.

[0013] Figure 3 This is a schematic diagram of the overall structure of the reactor.

[0014] Figure 4 This is a schematic diagram of the gas pressure measurement transmission tube.

[0015] Figure 5 A schematic diagram showing the connection between the gas pressure measurement transmission tube, the reactor, and the pressure sensor.

[0016] Figure 6 This is a schematic diagram of the external structure of the movable insulation sleeve.

[0017] Figure 7 This is a schematic diagram of the internal structure of the movable insulation sleeve.

[0018] Figure 8 This is a flowchart illustrating the long-term storage stability test method for explosives.

[0019] Figure 9 yes Figure 8 Pressure-time curves of typical explosive samples at 110℃ in the method.

[0020] The meanings of the labels in the diagram are as follows: 1-reactor, 2-pressure measurement and transmission pipe, 3-pressure sensor, 4-outer shell, 5-furnace support, 6-furnace body, 7-heater, 8-reactor heating chamber, 9-movable insulation sleeve, 10-glass fiber outer insulation cylinder, 11-glass fiber inner insulation cylinder, 12-stainless steel sleeve, 13-top ceramic insulation plate, 14-furnace body support plate.

[0021] 101-Volume reaction tube, 102-Fastening nut, 103-Gas guide head, 104-Sealing ring, 105-Capillary pressure transmission tube, 106-Reinforcing layer, 107-Heat sink, 108-Connecting hole, 109-Fastening screw.

[0022] 201-Pressure transmission sleeve, 202-Pressure probe, 203-Connector, 204-Connecting nut, 205-Protective sleeve, 206-Sheath tube, 207-Screw.

[0023] 901-Fixed base, 902-Insulation sleeve, 903-Metal cover, 904-Annular heat insulation cover, 905-Reactor through cavity.

[0024] 90101 - Inner cylinder, 90102 - Annular support base.

[0025] The specific content of the present invention will be further explained in detail below with reference to the embodiments. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, all components and equipment in this invention are based on components and equipment known in the prior art.

[0027] During the experiment, the dedicated reactor is mainly used to collect and store the gases produced by the decomposition of gunpowder in the reaction chamber, and transmit the pressure generated by the decomposition gases to a pressure sensor for measurement via a capillary tube. It is the core component of the testing system, and it must ensure airtightness while maintaining a defined volume so that the test results can be compared with those obtained using the gas measurement method.

[0028] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0029] Example 1: This embodiment provides a reactor specifically designed for a long-term storage stability testing system for explosives, such as... Figure 3As shown, it includes a top-open constant-volume reaction tube 101, with a gas guide head 103 covering the opening of the constant-volume reaction tube 101 by a fastening nut 102. Sealing rings 104 are respectively provided between the constant-volume reaction tube 101 and the fastening nut 102 and between the constant-volume reaction tube 101 and the gas guide head 103. The gas guide head 103 is connected to the lower end of the capillary pressure transmission tube 105, and the upper end of the capillary pressure transmission tube 105 is connected to one end of the pressure measurement transmission tube 2. The capillary pressure transmission tube 105 is covered with a reinforcing layer 106, and the upper section of the reinforcing layer 106 is set as a heat sink 107.

[0030] In this embodiment, the constant volume reaction tube 101 is cylindrical with an inner diameter of 8.5 mm, an outer diameter of 20 mm, a height of 110 mm, a bottom thickness of 2 mm, and an internal volume of 25 ml ± 0.5 ml, and is used to hold the explosive sample.

[0031] In this embodiment, the fastening nut 102 is hexagonal on the outside and is used to connect the constant volume reaction tube 101 and the gas guide head 103. The constant volume reaction tube 101 is pre-fitted with a locking screw 109, and the locking screw 109 and the fastening nut 102 are locked together by thread engagement.

[0032] In this embodiment, the sealing ring 104 is annular and is used for sealing between the two.

[0033] In this embodiment, the upper end of the capillary pressure transmission tube 105 is provided with an external thread, which facilitates threaded connection with the connecting nut 204 at one end of the pressure measurement transmission tube 2.

[0034] In this embodiment, the reinforcing layer 106 is welded to the outside of the capillary pressure conduction tube 105 to protect the capillary pressure conduction tube 105. The upper half of the reinforcing layer 106 is a heat sink 107 for heat dissipation of the capillary pressure conduction tube 105.

[0035] As a preferred embodiment of this invention, such as Figure 3 As shown, a connecting hole 108 is radially formed on the sidewall of the reinforcing layer 106 between the heat sinks 107. In this embodiment, the connecting hole 108 is used to prevent the formation of a sealed structure between the reinforcing layer 106 and the capillary pressure conduction tube 105, which could lead to damage to the capillary pressure conduction tube 105 due to thermal expansion and contraction of the gas.

[0036] In this embodiment, the constant volume reaction tube 101, fastening nut 102, capillary pressure transmission tube 105, reinforcing layer 106 and heat sink 107 are made of stainless steel; the sealing ring 104 is made of fluororubber or soft aluminum.

[0037] Example 2: This embodiment provides a long-term storage stability testing system for explosives, such as... Figure 1As shown, it includes a pressure measurement module, which includes at least one reactor 1 and at least one pressure measurement transmission tube 2. One end of each pressure measurement transmission tube 2 is connected to the air outlet at the upper end of the reactor 1, and the other end of each pressure measurement transmission tube 2 is connected to the measurement port of the pressure sensor 3.

[0038] like Figure 2 As shown, it also includes a constant temperature heating module, which includes a housing 4, inside which is fitted a stainless steel sleeve 12. A furnace support plate 14 is provided at the bottom of the stainless steel sleeve 12. A furnace body 6 is installed on the furnace support plate 14 via a furnace body bracket 5. A heater 7 for heating the furnace body 6 is installed on the furnace support plate 14. At least one reactor heating chamber 8 is installed inside the furnace body 6. A movable insulation sleeve 9 is coaxially provided on each reactor heating chamber 8. The top of the movable insulation sleeve 9 extends to the top of the housing 4. The reactor 1 can enter the reactor heating chamber 8 through the movable insulation sleeve 9 and be heated by the constant temperature heating module.

[0039] As one specific solution in this embodiment, such as Figure 3 As shown, reactor 1 is the reactor specifically designed for the long-term storage stability testing system for explosives given in Example 1.

[0040] In this preferred embodiment, the outer shell 4 is provided with a placement seat for placing the reactor 1, which is used to place the reactor 1 when the reactor 1 is not heated.

[0041] As one specific solution in this embodiment, such as Figure 4 As shown, the pressure measurement transmission tube 2 includes a hollow pressure transmission sleeve 201. One end of the pressure transmission sleeve 201 is connected to the pressure measuring head 202, and the other end of the pressure transmission sleeve 201 is connected to the connector 203. The connector 203 is fitted with a connecting nut 204.

[0042] like Figure 5 As shown, the lower end of the pressure measuring head 202 is provided with an external thread; the pressure measuring head 202 is connected to the measuring port of the pressure sensor 3 by a thread; the connecting nut 204 is connected to and sealed to the air outlet at the upper end of the reactor 1 by a thread. The pressure sensor 3 adopts a pressure sensor commonly known in the art.

[0043] In this embodiment, the pressure transmission sleeve 201 is a 316 stainless steel microporous metal tube with an outer diameter of 1.588 mm, a wall thickness of 0.508 mm, a length of 400.0 mm, and a volume of approximately 0.103 mL. Its pore size and volume are much smaller than the inner diameter of reactor 1, which is approximately 17 mm, and its volume is approximately 25 mL. Through laser precision welding, a pressure measuring head 202 is welded to one end of the pressure transmission sleeve 201, and a connector 203 is welded to the other end.

[0044] In this embodiment, a connecting pipe is provided outside the upper through hole of the pressure measuring head 202. The outer diameter and wall thickness are the same as those of the pressure transmission sleeve 201, and it is connected to the port of the pressure transmission sleeve 201 by welding.

[0045] In this embodiment, the connector 203 is a stainless steel cylinder with a through hole. The through hole is divided into upper and lower parts. The upper part of the through hole has the same diameter as the inner diameter of the pressure transmission sleeve 201, while the lower part has a slightly larger diameter. This allows it to fit tightly with the upper outlet of the reactor 1 and be sealed by the connecting nut 204. A connecting pipe is provided outside the through hole at the upper end of the cylinder. The inner and outer diameters of the pipe are the same as those of the pressure transmission sleeve 201, and the pipe is connected to the other end of the pressure transmission sleeve 201 by laser welding.

[0046] In this embodiment, the connecting nut 204 is a standard part. When welding the connector 203, the connecting nut 204 must first be fitted onto the outside of the pressure transmission sleeve 201. The connecting nut 204 is connected through the external thread of the gas outlet end of the reactor 1.

[0047] As a preferred embodiment of this invention, such as Figure 4 As shown, the pressure transmission ferrule 201 is covered with a protective sleeve 205, which is a polytetrafluoroethylene (PTFE) tube. In this embodiment, the protective sleeve 205 is used to protect the metal pressure transmission ferrule 201 from deformation and breakage under external force or bending. The inner diameter of the protective sleeve 205 is slightly larger than the outer diameter of the ferrule, approximately 2 mm, and the outer diameter is 4 mm. Its length is the same as that of the pressure transmission ferrule 201, which is 400 mm. When welding the pressure measuring head 202 and the connector 203, the PTFE protective sleeve 205 must first be fitted onto the pressure transmission ferrule 201.

[0048] As a preferred embodiment of this invention, such as Figure 4 As shown, a protective sleeve 206 is installed at the connection position between the pressure transmission sleeve 201 and the pressure probe 202, and at the connection position between the pressure transmission sleeve 201 and the connector 203. The protective sleeve 206 is a stainless steel metal tube.

[0049] In this embodiment, since the wall thickness of the microporous metal pressure transmission sleeve 201 is relatively thin, about 0.508 mm, and the welded part is relatively weak, a protective sleeve 206 is installed at each of the welded parts at both ends of the pressure transmission sleeve 201; the pressure measuring head 202 is a stainless steel external hexagonal threaded through-hole connector, and the inner diameter of its through hole is consistent with the inner diameter of the pressure transmission sleeve 201.

[0050] In this embodiment, the outer diameter of the sheath tube 206 is 10mm, and its inner diameter is the same as the outer diameter of the protective sleeve 205, which is 4mm. It is fixed to the welding parts at both ends of the pressure transmission sleeve tube 201 by four embedded screws 207 to protect the welding parts from external bending.

[0051] The pressure measurement transmission tube of the present invention has a slender microporous structure, is covered with a polytetrafluoroethylene protective sleeve, and is designed with heating and constant temperature control at its connection with the reactor. This effectively solves the problems of high temperature gas thermal diffusion affecting the measurement accuracy of high-precision pressure sensors, drastic fluctuations in ambient temperature affecting accurate gas pressure measurement, and phase transitions of explosive gas products affecting accurate pressure measurement, thereby improving the pressure measurement accuracy of the testing system.

[0052] The pressure measurement transmission tube of the present invention can accurately measure the pressure of high-temperature gas in the reactor of the test system to the room temperature environment outside the test system.

[0053] As a preferred embodiment, a temperature sensor is installed inside the furnace body 6; such as Figure 2 As shown, the stainless steel sleeve 12 is filled with a glass fiber outer insulation cylinder 10, and a glass fiber inner insulation cylinder 11 is provided inside the glass fiber outer insulation cylinder 10. The height of the glass fiber inner insulation cylinder 11 is less than the height of the glass fiber outer insulation cylinder 10. The furnace body 6 is located inside the glass fiber inner insulation cylinder 11. A top ceramic heat insulation plate 13 is installed on the top of the glass fiber inner insulation cylinder 11 for thermal insulation. The top opening of the movable insulation sleeve 9 extends out of the top ceramic heat insulation plate 13.

[0054] As a preferred embodiment, the furnace body 6 has a symmetrical cylindrical structure and is made of cast aluminum; there are eight pressure measurement and transmission pipes 2; there are eight reactor heating chambers 8, which are evenly distributed inside the furnace body 6.

[0055] As a preferred embodiment of this invention, such as Figure 6 and Figure 7 As shown, the movable insulation sleeve 9 includes a fixing base 901, the fixing base 901 includes an inner cylinder 90101, and the bottom of the inner cylinder 90101 is coaxially and integrally formed with an annular support base 90102. The inner cylinder 90101 and the annular support base 90102 are vertically arranged.

[0056] like Figure 7 As shown, the inner cylinder 90101 is fitted with an insulation sleeve 902, and the insulation sleeve 902 is fitted with a metal cover 903. The bottom ends of the insulation sleeve 902 and the metal cover 903 are both resting on the annular support base 90102.

[0057] like Figure 7 As shown, the top of the inner cylinder 90101 is detachably fitted with an annular heat insulation cover 904. The central hole of the annular heat insulation cover 904, the central cavity of the inner cylinder 90101, and the central hole of the annular support base 90102 form a reactor through cavity 905 with both ends connected.

[0058] In this embodiment, the insulation sleeve 902 is made of gypsum material; the thickness of the insulation sleeve 902 is 21mm. For example... Figure 6 As shown, the metal cover 903 has a perforated mesh structure. The annular heat insulation cover 904 is made of ABS plastic material.

[0059] In this embodiment, the movable insulation sleeve 9 is assembled with the sealed reactor 1: the movable insulation sleeve 9 is inserted into the capillary pressure transmission tube 105 of the sealed reactor 1 from top to bottom, placed outside the capillary pressure transmission tube 105, and in contact with the upper part of the fastening nut 102. The fastening nut 102 also serves as a limiting device. After the movable insulation sleeve 9 is assembled, the upper end of the sealed reactor 1 can expose all the external threads, which are used for threaded connection between the capillary pressure transmission tube 105 of the sealed reactor 1 and the connecting nut 204 at one end of the pressure measuring transmission tube 2.

[0060] The movable insulation sleeve of this invention provides a dedicated movable insulation sleeve for a long-term storage stability tester for explosives. The movable insulation sleeve proposes various designs to improve the insulation performance of different components, while taking into account the requirements of overall strength, sealing, and convenience, and has good insulation effect and practicality.

[0061] The advantages of the movable insulation sleeve of the long-term storage stability tester for explosives proposed in this invention are: first, it matches well with the structure of a sealed reactor; second, it has a low heat transfer rate and good insulation effect; and third, it is movable, flexible to use, and convenient to maintain.

[0062] In the long-term storage stability test system for explosives of the present invention, the explosives are placed in the reactor 1 of the pressure measurement module during the test. The reactor 1 is heated to a given volume by the constant temperature heating module. The decomposition gas pressure value is transmitted to the remote pressure sensor 3 through the pressure measurement transmission tube 2. The temperature of the constant temperature heating module is controlled and the decomposition gas pressure value is recorded.

[0063] The long-term storage stability test method for explosives based on the long-term storage stability test system of the present invention is as follows: Figure 8 As shown, the method includes the following steps: Step 1, Preparation of explosive samples: In step one, the explosive sample has the following requirements: First, larger-sized explosives are pulverized into particles that can pass through a 5.0mm sieve, while smaller particles that pass through a 0.2mm sieve are removed.

[0064] Second, for explosive samples that can pass through a 5.0mm sieve without requiring crushing, the original samples were tested.

[0065] Third, the solid explosive samples used in the experiment were not artificially dried to ensure that the experimental conditions were consistent with the actual long-term storage conditions.

[0066] Step 2, rapid screening test: Differential thermal analysis and differential scanning calorimetry were used to conduct rapid screening tests on the thermal decomposition of the explosive samples to determine the melting temperature, thermal decomposition initiation temperature and decomposition peak temperature of the samples; this provides a basis for setting long-term storage stability test conditions.

[0067] In this embodiment, differential thermal analysis and differential scanning calorimetry are employed using differential thermal analysis and differential scanning calorimetry known in the art.

[0068] Step 3, setting up experimental conditions: Based on the melting temperature, thermal decomposition initiation temperature, and decomposition peak temperature of the sample to be tested obtained in step two, the long-term storage stability test conditions are set according to the characteristics of the sample to be tested.

[0069] The characteristics of the samples to be tested include single-base gunpowder, double-base gunpowder, triple-base gunpowder, composite solid propellants, and explosives.

[0070] The long-term storage stability test conditions include the test temperature and the holding time.

[0071] In step three, the test temperature for single-base propellant is set at 125℃ and the holding time is set at 4.5h; the test temperature for double-base propellant, triple-base propellant, composite solid propellant, and explosive is set at 110℃ and the holding time is set at 6h.

[0072] Step 4, Sample loading: Accurately weigh 1g of the explosive sample prepared in step one, put it into reactor 1 of the long-term storage stability test system for explosives and seal it. Record the ambient temperature and humidity during the test filling. At the same test temperature, at least two parallel explosive samples need to be filled.

[0073] In step four, the error should not exceed 0.001g.

[0074] Step 5: High-temperature constant temperature test and pressure monitoring: Reactor 1, filled with explosive samples, is simultaneously placed in the reactor heating chamber 8 of a stability testing system that has been kept at a preset test temperature under the same test temperature for a constant temperature and heat preservation test. At the same time, the pressure measurement module of the stability testing system is used to dynamically monitor the gas pressure generated by the thermal decomposition of the sample and obtain the pressure-time curve.

[0075] In this embodiment, the pressure-time curve of a typical explosive sample at 110°C is shown below. Figure 9 As shown.

[0076] Step Six, Data Processing: Long-term storage stability test data are calculated according to P=P t-P1 formula processing: among the measurement data of at least two parallel explosive samples, the maximum value is taken as the measurement result; In the formula: P represents the gas pressure value generated by the decomposition of the explosive sample; P t This indicates the pressure value in reactor 1 when the explosive sample reaches the constant temperature holding time t (4.5h or 6h); P1 represents the pressure value in reactor 1 when the explosive sample is heated for 1 hour.

[0077] Step 7, Long-term storage stability evaluation: Using the stability threshold Pc as the evaluation criterion, when the gas pressure value P generated by the decomposition of the explosive sample is less than or equal to Pc, the long-term storage stability is qualified; otherwise, the long-term storage stability is unqualified.

[0078] The method of the present invention can evaluate the stability of solid explosives during storage and use, and solves the problems of lack of stability evaluation methods for solid explosives during storage and use, and large errors in the evaluation of long-term storage stability by existing methods.

[0079] This invention is based on real storage and use environment conditions. Under the condition of limited increase in storage environment temperature, it directly evaluates long-term storage stability by monitoring the gas pressure generated by the decomposition of explosives. The test conditions are more scientific and reasonable, which improves the accuracy of the test results. At the same time, the method is simple to operate, the test process is fully automated, and the requirements for experimental personnel are low.

Claims

1. A reactor specifically designed for a long-term storage stability testing system for explosives, characterized in that, It includes a top-open constant volume reaction tube (101), and a gas guide head (103) is covered on the opening of the constant volume reaction tube (101) by a fastening nut (102). Sealing rings (104) are respectively provided between the constant volume reaction tube (101) and the fastening nut (102) and between the constant volume reaction tube (101) and the gas guide head (103). The gas guide head (103) is connected to the lower end of the capillary pressure transmission tube (105). The capillary pressure transmission tube (105) is covered with a reinforcing layer (106), and the upper section of the reinforcing layer (106) is set as a heat sink (107).

2. The reactor specifically designed for the long-term storage stability testing system of explosives as described in claim 1, characterized in that, A connecting hole (108) is radially provided on the side wall of the reinforcing layer (106) between the heat sinks (107).

3. The reactor specifically designed for the long-term storage stability testing system of explosives as described in claim 1, characterized in that, The constant volume reaction tube (101) is cylindrical with an inner diameter of 8.5 mm, an outer diameter of 20 mm, a height of 110 mm, a bottom thickness of 2 mm, and an internal volume of 25 ml ± 0.5 ml. It is used to hold explosive samples.

4. The reactor specifically designed for the long-term storage stability testing system of explosives as described in claim 1, characterized in that, The constant volume reaction tube (101), fastening nut (102), capillary pressure transmission tube (105), reinforcing layer (106) and heat sink (107) are made of stainless steel; the sealing ring (104) is made of fluororubber or soft aluminum.

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