A thermal expansion agent ignition device

Abstract

This utility model discloses a thermal expansion agent ignition device, including a cartridge, a sealing head screwed to the upper end of the inner wall of the cartridge, and a thermal expansion agent filled inside the cartridge. A support is inserted into the inner wall of the mounting head, and the outer wall of the support is connected to the mounting head through a sealing structure. An electric wire is electrically connected to the outer end of the resistance wire. The thermal expansion agent is contained in the cartridge, and the entire cartridge is sealed by the sealing head to ensure the explosive effect of the thermal expansion agent. The electric wire tube, as an important tool for igniting the thermal expansion agent, is filled with a composite phase change material, which can effectively shorten the response speed and avoid the phase change hysteresis effect of traditional expansion agents. Through the cooperation of the mounting head and the support, and the function of the sealing structure, the electric wire tube and the internal composite phase change material can be effectively protected, playing an important role in waterproofing, moisture-proofing, and dustproofing, ensuring the ignition effect. The resistance wire is connected to the electric wire, and the heating of the resistance wire is controlled by a switch, which is simple, convenient, and easy to operate.

Description

Technical Field

[0001] This utility model relates to the field of thermal expansion agent ignition technology, and specifically to a thermal expansion agent ignition device. Background Technology

[0002] Rock blasting using thermal expansion agents (also known as static blasting) is a process that uses a thermal expansion agent heated and expanded in a sealed cavity to generate enormous pressure (up to 50-100 MPa), causing rocks to fracture. The thermal expansion agent is a special engineering material that produces high-temperature, high-pressure gas and solid expansion products through a chemical reaction. It is mainly composed of an oxidant (such as chlorate), a metallic fuel (aluminum / magnesium powder), a pressure-transmitting medium, and a slow-release agent. Existing thermal expansion agent ignition devices have slow reactions and often fail due to their lack of sealing, resulting in poor practicality. Utility Model Content

[0003] The purpose of this invention is to provide a thermal expansion agent ignition device to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a thermal expansion agent ignition device, comprising a cartridge, a sealing head screwed to the upper end of the inner wall of the cartridge, a thermal expansion agent being filled inside the cartridge, a wire tube being installed through the inner wall of the sealing head, one end of the wire tube being inserted into the thermal expansion agent, and the other end of the wire tube being fixedly connected to an installation head, the inner wall of the wire tube being filled with a composite phase change material, a support being inserted into the inner wall of the installation head, the outer wall of the support being connected to the installation head through a sealing structure, a resistance wire being inserted into the inner wall of the support, and an electrical wire being electrically connected to the outer end of the resistance wire.

[0005] Preferably, the composite phase change material includes a matrix and additives, wherein the matrix is ​​paraffin wax, and the additives are graphene, silicon dioxide, and carbon fiber.

[0006] Preferably, the sealing structure includes a sleeve and a sealing ring. The sleeve is fixedly assembled to the outer wall of the support, the inner wall of the sleeve is screwed to the mounting head, and the sealing ring is sleeved on the outer wall of the support, and the sealing ring is tightly fitted to the inner wall of the mounting head.

[0007] Preferably, a throttle is fixedly mounted on the outer wall of the support.

[0008] Preferably, four claws are uniformly fixed to the lower end of the outer wall of the cartridge.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: the thermal expansion agent is contained in a cartridge, and the entire cartridge is sealed by a sealing head to ensure the explosive effect of the thermal expansion agent. The lead tube, as an important tool for igniting the thermal expansion agent, is filled with a composite phase change material, which can effectively shorten the response speed and avoid the phase change hysteresis effect of traditional expansion agents. Through the cooperation of the mounting head and the support, as well as the role of the sealing structure, the lead tube and the internal composite phase change material can be effectively protected, playing an important role in waterproofing, moisture-proofing, and dustproofing, ensuring the ignition effect. The resistance wire is connected to the electrical wire, and the heating of the resistance wire is controlled by a switch, which is simple, convenient and easy to operate. Attached Figure Description

[0010] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0011] Figure 2 This is a front view of the present invention;

[0012] Figure 3 for Figure 2 Enlarged schematic diagram of the structure at point A in the middle;

[0013] Figure 4 This is a three-dimensional schematic diagram of the conductor tube and the mounting head.

[0014] In the diagram: 1-Cylinder, 2-Encapsulation head, 3-Wire tube, 4-Mounting head, 5-Sealing structure, 51-Sleeve, 52-Sealing ring, 6-Support, 7-Composite phase change material, 8-Electrical conductor, 9-Resistance wire, 10-Throttle, 11-Claw. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Please see Figure 1-4 This utility model provides a thermal expansion agent ignition device, including a cartridge 1, a sealing head 2 screwed to the upper end of the inner wall of the cartridge 1, the cartridge 1 being filled with a thermal expansion agent, a wire tube 3 being installed through the inner wall of the sealing head 2, one end of the wire tube 3 being inserted into the thermal expansion agent, and the other end of the wire tube 3 being fixedly connected to an installation head 4, the inner wall of the wire tube 3 being filled with a composite phase change material 7, a support 6 being inserted into the inner wall of the installation head 4, the outer wall of the support 6 being connected to the installation head 4 through a sealing structure 5, a resistance wire 9 being inserted into the inner wall of the support 6, and an electrical wire 8 being electrically connected to the outer end of the resistance wire 9.

[0017] The thermal expansion agent is contained in cartridge 1 and sealed by encapsulation head 2 to ensure the explosive effect of the thermal expansion agent. The lead tube 3, which is an important tool for igniting the thermal expansion agent, is filled with composite phase change material 7, which can effectively shorten the response speed and avoid the phase change hysteresis effect of traditional expansion agents. Through the cooperation of mounting head 4 and support 6, and the function of sealing structure 5, the lead tube 3 and the internal composite phase change material 7 can be effectively protected, playing an important role in waterproofing, moisture-proofing and dustproofing, and ensuring the ignition effect. The resistance wire 9 is connected to the wire 8, and the heating of the resistance wire 9 is controlled by a switch, which is simple, convenient and easy to operate.

[0018] The composite phase change material 7 includes a matrix and additives. The matrix is ​​paraffin wax, and the additives are graphene, silicon dioxide, and carbon fiber.

[0019] Paraffin wax (phase change enthalpy 180-220 J / g), graphene improves thermal conductivity, silicon dioxide reduces supercooling, and carbon fiber enhances mechanical strength.

[0020] The sealing structure 5 includes a sleeve 51 and a sealing ring 52. The sleeve 51 is fixedly assembled to the outer wall of the support 6, and the inner wall of the sleeve 51 is screwed to the mounting head 4. The sealing ring 52 is sleeved on the outer wall of the support 6, and the sealing ring 52 is tightly fitted to the inner wall of the mounting head 4.

[0021] In the sealing structure 5, the sleeve 51 is fixedly sealed to the support 6 and screwed to the outer wall of the mounting head for sealing. At the same time, the sealing ring 52 plays a secondary sealing role, ensuring the sealing effect between the support 6 and the mounting head 4.

[0022] The outer wall of the support 6 is fixedly fitted with a throttle 10.

[0023] The 10-turn handle facilitates rotation and adjustment of the 6-support base.

[0024] Four claws 11 are evenly fixed to the lower end of the outer wall of the cartridge 1.

[0025] The chuck 11 ensures the stability of the cartridge 1 when it is placed in the hole.

[0026] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A thermal expansion agent ignition device characterized by: The device includes a cartridge (1), with a sealing head (2) screwed onto the upper end of the inner wall of the cartridge (1). The cartridge (1) is filled with a thermal expansion agent. A wire tube (3) is installed through the inner wall of the sealing head (2). One end of the wire tube (3) is inserted into the thermal expansion agent. The other end of the wire tube (3) is fixedly connected to an installation head (4). The inner wall of the wire tube (3) is filled with a composite phase change material (7). A support (6) is inserted into the inner wall of the installation head (4). The outer wall of the support (6) is connected to the installation head (4) through a sealing structure (5). A resistance wire (9) is inserted into the inner wall of the support (6). An electrical wire (8) is electrically connected to the outer end of the resistance wire (9).

2. A thermal expansion agent ignition device according to claim 1, characterized in that: The composite phase change material (7) includes a matrix and additives, wherein the matrix is ​​paraffin wax and the additives are graphene, silicon dioxide and carbon fiber.

3. The thermal expansion agent ignition device according to claim 1, characterized in that: The sealing structure (5) includes a sleeve (51) and a sealing ring (52). The sleeve (51) is fixedly assembled to the outer wall of the support (6). The inner wall of the sleeve (51) is screwed to the mounting head (4). The sealing ring (52) is sleeved on the outer wall of the support (6) and the sealing ring (52) is tightly fitted to the inner wall of the mounting head (4).

4. The thermal expansion agent ignition device according to claim 1, characterized in that: A throttle (10) is fixedly mounted on the outer wall of the support (6).

5. The thermal expansion agent ignition device according to claim 1, characterized in that: Four claws (11) are evenly fixed to the lower end of the outer wall of the cartridge (1).

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