A high-power phase change gas heating and excitation device and its usage method

Abstract

This invention discloses a high-power phase change gas heating and excitation device and its usage method, relating to the field of phase change gas heating technology, and aims to solve the technical problem that electric heaters in the prior art are easily damaged when heating liquid carbon dioxide. The high-power phase change gas heating and excitation device of this invention includes a power connector, a connecting member, a housing, and a heating component. The connecting member is connected to the housing, and the power connector is disposed on the connecting member. The heating component is disposed within the housing, and the power connector passes through the connecting member and connects to the heating component. This invention also discloses a phase change gas heating method using the above-mentioned high-power phase change gas heating and excitation device. This invention has a simple structure, is easy to operate, and can effectively reduce the risk of damage to the heating component during the heating process.

Description

Technical Field

[0001] This invention relates to the field of phase change gas heating technology, and in particular to a high-power phase change gas heating excitation device and its usage method. Background Technology

[0002] The working principle of carbon dioxide phase change explosion technology is to instantly heat liquid carbon dioxide into a supercritical state, which is then converted into a high-pressure gas and rapidly expands to do work and complete the blasting operation.

[0003] With stricter controls on the reagents and transportation approval standards of the original phase change explosion technology, in order to meet the needs of phase change work, phase change work has begun to be carried out by heating liquid carbon dioxide with electric heaters. However, conventional electric heaters are easily damaged when heating liquid carbon dioxide due to excessive pressure inside the heating tube. Summary of the Invention

[0004] In view of the above analysis, the present invention aims to provide a high-power phase change gas heating and excitation device and its usage method, so as to solve the technical problem that electric heaters are easily damaged when heating liquid carbon dioxide in the prior art.

[0005] The objective of this invention is mainly achieved through the following technical solutions:

[0006] On one hand, the present invention discloses a high-power phase change gas heating and excitation device, including a power connector, a connecting member, a housing, and a heating component. The connecting member is connected to the housing, the power connector is disposed on the connecting member, the heating component is disposed inside the housing, and the power connector passes through the connecting member and is connected to the heating component.

[0007] Furthermore, a burst baffle is provided on the outer shell.

[0008] Furthermore, the heating component includes a heating wire, which is connected to the power connector to form a closed circuit.

[0009] Furthermore, the heating wire is made of an iron-cobalt-aluminum-molybdenum alloy.

[0010] Furthermore, the heating wire is configured as a spiral.

[0011] Furthermore, the heating assembly also includes an insulating frame and a protective partition, with one end of the insulating frame connected to the heating wire and the other end connected to the protective partition.

[0012] Furthermore, the protective partition is connected to the connector to fix and support the heating wire.

[0013] Furthermore, the heating assembly also includes a retaining ring, which is connected to the protective partition and is used to fix the protective partition.

[0014] Furthermore, it also includes a guide assembly connected to the housing.

[0015] Furthermore, the guide component includes a nozzle, which is configured as an hourglass structure.

[0016] Furthermore, the guide assembly also includes a guide shell, a baffle, and a fixed slide rod. One end of the guide shell is connected to the outer shell, and the other end is connected to the nozzle. The baffle is disposed inside the guide shell and hinged to the guide shell. A through hole is provided on the guide shell. One end of the fixed slide rod is connected to the baffle, and the other end is disposed inside the through hole. The fixed slide rod can pass through the guide shell along the through hole.

[0017] Furthermore, the guide assembly also includes a compression spring, and the two baffles can form a circle. The diameter of the circle formed by the baffles is the same as the inner diameter of the guide shell. The compression spring is connected to the baffles and the guide shell to support the baffles, so that the two baffles can remain joined into a circle when no force is applied.

[0018] Furthermore, a sealing ring is provided on the fixed slide rod, which can seal the through hole.

[0019] Furthermore, the end of the fixed slide bar inside the through hole is set as a spike, and a sealing film is set on the through hole.

[0020] On the other hand, the present invention also discloses a phase change gas heating method, which employs the above-mentioned high-power phase change gas heating and excitation device.

[0021] Furthermore, it includes the following steps:

[0022] S1: Insert the power connector;

[0023] S2: Connect the power connector to the heating element;

[0024] S3: Connect the connector to the housing;

[0025] S4: Place a high-power phase change gas heating and excitation device;

[0026] S5: Connect the power supply connector.

[0027] Further, step S3 includes the following steps:

[0028] S31: Fill with liquid carbon dioxide;

[0029] S32: Install connectors.

[0030] Further, step S4 includes the following steps:

[0031] Step S41: Drill the placement hole;

[0032] Step S42: Place the high-power phase change gas heating and excitation device in the placement hole.

[0033] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0034] (1) The high-power phase change gas heating and excitation device provided by this invention connects the heating wire to the protective partition through an insulating frame and a protective partition, thus eliminating the cavity structure in the heating component. This prevents damage to the heating component during the heating of liquid carbon dioxide. In contrast, conventional heaters have a cavity between the heating wire and the outer protective shell. When the pressure inside the shell is greater than atmospheric pressure, the pressure inside the shell exceeds the pressure of the cavity on the outer protective shell, causing deformation and damage to the outer protective shell. The heating wire of this invention is spiral-shaped and made of an iron-cobalt-aluminum-molybdenum alloy, which improves the heating power and enhances the efficiency of heating liquid carbon dioxide. The structure is simple and easy to operate, effectively reducing the risk of damage to the heating component during heating.

[0035] (2) The high-power phase change gas heating and excitation device provided by the present invention can effectively guide the work direction of gaseous carbon dioxide by setting a guiding component. By setting an hourglass-shaped nozzle, the flow rate of gaseous carbon dioxide when it is ejected is increased, and the impact force of gaseous carbon dioxide is increased, thereby improving the work effect of gaseous carbon dioxide. By setting a baffle and a fixed slide rod, when gaseous carbon dioxide pushes the baffle, the baffle rotates towards the inner wall of the guide shell. At the same time, the fixed slide rod passes through the through hole and enters the rock and soil around the high-power phase change gas heating and excitation device with the rotation of the baffle, thereby fixing the position of the high-power phase change gas heating and excitation device and preventing the high-power phase change gas heating and excitation device from being displaced due to excessive impact force of gaseous carbon dioxide. This improves the safety and stability of the high-power phase change gas heating and excitation device and reduces the risk of accidents caused by displacement of the high-power phase change gas heating and excitation device.

[0036] (3) The phase change gas heating method provided by the present invention adopts a high-power phase change gas heating excitation device, thereby improving the heating efficiency of liquid carbon dioxide without the use of chemical reagents. By setting an insulating frame and protective partition, the heating component does not have a cavity structure, preventing excessive pressure inside the shell from squeezing the cavity and causing damage to the heating component. This reduces the probability of damage to the heater during the heating process and improves the safety and stability of phase change gas heating. Using electric energy instead of chemical powder for heating can reduce the cost of phase change gas heating and reduce the generation of toxic and harmful gases during the phase change gas heating process, making the phase change gas heating process greener, cleaner and more environmentally friendly.

[0037] In this invention, the above-described technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of this invention will be set forth in the following description, and some advantages may become apparent from the description or be learned by practicing the invention. The objects and other advantages of this invention can be realized and obtained through the embodiments described and the accompanying drawings, which are particularly pointed out. Attached Figure Description

[0038] The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Throughout the drawings, the same reference numerals denote the same parts.

[0039] Figure 1 This is a schematic diagram of the overall structure of the high-power phase change gas heating and excitation device according to Embodiment 1 of the present invention;

[0040] Figure 2 This is a partial structural schematic diagram of the heating assembly according to Embodiment 1 of the present invention;

[0041] Figure 3 This is a schematic diagram of the internal structure of the guide assembly according to Embodiment 2 of the present invention;

[0042] Figure 4 This is a schematic diagram of the baffle and fixed slide bar in Embodiment 2 of the present invention;

[0043] Figure 5 This is a partial structural diagram of the through hole and the fixed slide rod in Embodiment 2 of the present invention;

[0044] Figure 6 This is a schematic flowchart of the phase change gas heating method according to Embodiment 3 of the present invention.

[0045] Figure label:

[0046] 1-Power connector; 2-Connector; 3-Housing shell; 4-Guide assembly; 41-Spray nozzle; 42-Guide shell; 421-Through hole; 43-Baffle; 44-Fixing slide bar; 441-Sealing ring; 45-Compression spring; 5-Heating assembly; 51-Heating wire; 52-Insulating frame; 53-Protective partition; 54-Fixing ring. Detailed Implementation

[0047] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, which form part of the present invention and are used together with the invention to illustrate the principles of the invention.

[0048] Example 1

[0049] This embodiment provides a high-power phase change gas heating and excitation device, such as... Figure 1 As shown, it includes a power connector 1, a connector 2, a housing 3, and a heating component 5. The connector 2 is connected to the housing 3, and the power connector 1 is provided on the connector 2. The heating component 5 is disposed inside the housing 3. The power connector 1 passes through the connector 2 and is connected to the heating component 5 to supply power to the heating component 5 so that the heating component 5 heats the liquid carbon dioxide.

[0050] An explosion baffle is installed on the outer shell 3. The explosion baffle is used to seal the outer shell 3. When the pressure inside the outer shell 3 reaches 200MPa to 300MPa, the explosion baffle ruptures and releases gaseous carbon dioxide to do work.

[0051] The power connector 1 is insulated from the connector 2 and is sealed with insulating sealant. For example, connector 2 is a flange.

[0052] like Figure 2 As shown, the heating assembly 5 includes a heating wire 51, an insulating frame 52, a protective partition 53, and a fixing ring 54. The heating wire 51 is connected to the power connector 1 to form a closed circuit. The insulating frame 52 is disposed between the protective partition 53 and the heating wire 51. One end of the insulating frame 52 is connected to the heating wire 51, and the other end is connected to the protective partition 53, thereby maintaining insulation between the heating wire 51 and the protective partition 53 to prevent leakage. Multiple protective partitions 53 are provided. The protective partitions 53 are connected to the connector 2 to fix and support the heating wire 51. The fixing ring 54 is connected to the protective partition 53 to fix the protective partition 53 and improve the structural stability of the heating assembly 5.

[0053] Preferably, the heating wire 51 is made of an iron-cobalt-aluminum-molybdenum alloy, which enables the heating wire 51 to rapidly heat liquid carbon dioxide.

[0054] Preferably, the heating wire 51 is configured as a spiral shape, thereby increasing the contact area between the heating wire 51 and the liquid carbon dioxide and enhancing the heating effect of the heating wire 51.

[0055] For example, the insulating frame 52 is made of sintered zirconium oxide or ceramic material.

[0056] For example, the protective partition 53 and the retaining ring 54 are made of stainless steel.

[0057] It is understandable that the difference between heating component 5 and conventional heater is that heating component 5 does not have a cavity structure. In contrast, conventional heaters have a cavity between the heating wire and the outer protective shell. When the pressure inside the outer shell 3 is greater than atmospheric pressure, the pressure inside the outer shell 3 is greater than the pressure of the cavity on the outer protective shell, which causes the outer protective shell to be squeezed and deformed, damaging the conventional heater.

[0058] Furthermore, the high-power phase change gas heating and excitation device also includes a guide component 4, which is connected to the outer shell 3 and is used to guide the work direction of gaseous carbon dioxide.

[0059] When the high-power phase change gas heating and excitation device is used to heat liquid carbon dioxide, the power connector 1 is connected to the power supply through the wire, and the power supply is used to supply power to the heating component, so that the heating component 5 can quickly heat the liquid carbon dioxide, causing the liquid carbon dioxide to undergo a rapid phase change and be converted into liquid carbon dioxide. This causes the pressure inside the outer shell 3 to rise to the point that the bursting baffle ruptures, and the gaseous carbon dioxide is ejected along the guide component 4 to do work.

[0060] Example 2

[0061] This embodiment provides a high-power phase change gas heating and excitation device, such as... Figure 3 As shown, the difference from Embodiment 1 is that the guide assembly 4 includes an outlet 41, a guide shell 42, a baffle 43, a fixed slide bar 44, and a compression spring 45. The outlet 41 is used to amplify the flow rate of gaseous carbon dioxide and enhance the impact force of gaseous carbon dioxide. The guide shell 42, baffle 43, fixed slide bar 44, and compression spring 45 are used to fix the high-power phase change gas heating and excitation device and prevent the impact force of gaseous carbon dioxide from causing the high-power phase change gas heating and excitation device to shift and generate safety hazards.

[0062] The nozzle 41 is designed as an hourglass structure, so that gaseous carbon dioxide enters the nozzle 41 and first contracts and then expands. According to the continuity equation and Bernoulli's equation, when a fluid flows in a pipe, the mass of fluid flowing through any cross-section of the pipe per unit time is equal. Therefore, when gaseous carbon dioxide enters the contraction section of the nozzle 41, as the cross-sectional area gradually decreases, the gas velocity gradually increases in order to ensure that the mass flow rate remains constant. This results in the gaseous carbon dioxide ejected from the nozzle 41 having a greater velocity and increasing the impact force of the gaseous carbon dioxide.

[0063] Furthermore, such as Figures 3-5As shown, the guide assembly 4 also includes a guide shell 42, a baffle 43, a fixed slide rod 44, and a compression spring 45. One end of the guide shell 42 is connected to the outer shell 3, and the other end is connected to the nozzle 41. A burst baffle is disposed between the guide shell 42 and the outer shell 3. The baffle 43 is disposed inside the guide shell 42 and hinged to it. The two baffles 43 can form a circle, and the diameter of the circle formed by the baffles 43 is the same as the inner diameter of the guide shell 42, thereby blocking gaseous carbon dioxide and causing the gaseous carbon dioxide to push the baffle 43 to do work. The compression spring 45 is connected to the baffle 43 and the guide shell 42 to support the baffle 43, so that the two baffles 43 can remain joined into a circle when no force is applied. A through hole 421 is provided on the guide shell 42. One end of the fixed slide rod 44 is connected to the baffle 43, and the other end is disposed inside the through hole 421. When gaseous carbon dioxide pushes the baffle 43, the fixed slide rod 44 can pass through the guide shell 42 along the through hole 421 and penetrate into the rock and soil around the high-power phase change gas heating and excitation device, thereby fixing the position of the high-power phase change gas heating and excitation device and preventing the high-power phase change gas heating and excitation device from being displaced due to excessive impact force of gaseous carbon dioxide.

[0064] When gaseous carbon dioxide breaks through the blasting baffle and enters the guide shell 42, it pushes the baffle 43, causing the compression spring 45 to compress. The baffle 43 rotates towards the inner wall of the guide shell 42, and at the same time, the fixed slide rod 44 passes through the through hole 421 and enters the rock and soil around the high-power phase change gas heating and excitation device as the baffle 43 rotates, thereby fixing the position of the high-power phase change gas heating and excitation device.

[0065] Preferably, the guide component 4 is detachably connected to the housing 3, which facilitates the replacement of the guide component 4.

[0066] Preferred, such as Figure 4 As shown, a sealing ring 441 is provided on the fixed slide rod 44. The shape of the sealing ring 441 matches the through hole 421. When gaseous carbon dioxide pushes the baffle 43 and causes the fixed slide rod 44 to slide along the through hole 421, the sealing ring 441 can seal the through hole 421 to prevent gaseous carbon dioxide from leaking from the through hole 421.

[0067] Preferably, one end of the fixed slide bar 44 located inside the through hole 421 is configured as a spike, thereby facilitating the fixed slide bar 44 to enter the rock and soil. A sealing membrane is provided on the through hole 421 to prevent the spike of the fixed slide bar 44 from scratching objects or accidentally injuring workers during movement. When the baffle 43 is moved by the impact of gaseous carbon dioxide, the fixed slide bar 44 pierces the sealing membrane and passes through the through hole 421.

[0068] When the high-power phase change gas heating and excitation device is used to heat liquid carbon dioxide, the heating component 5 rapidly heats the liquid carbon dioxide, causing the bursting baffle to rupture. Gaseous carbon dioxide then enters the guide shell 42 and impacts the baffle 43, causing the baffle 43 to move. The fixing rod 44 slides along the through hole 421 as the baffle 43 moves, and penetrates the surrounding rock and soil of the high-power phase change gas heating and excitation device, fixing its position. After pushing aside the baffle 43, the gaseous carbon dioxide enters the nozzle 41 and is ejected from it. The nozzle 41 accelerates the gaseous carbon dioxide, increasing its impact force.

[0069] Example 3

[0070] This embodiment provides a phase change gas heating method, employing the high-power phase change gas heating excitation device described in Embodiment 1 or Embodiment 2, such as... Figure 6 As shown, it includes the following steps:

[0071] S1: Insert power connector 1.

[0072] Specifically, connect the power connector 1 to the connector 2, and seal the connection hole with insulating sealant.

[0073] S2: Connect the power connector 1 to the heating component 5.

[0074] Specifically, the power connector 1 is connected to the heating wire 51, so that the heating wire 51 and the power connector form a closed circuit, thereby connecting the heating component 5 to the connector 2.

[0075] Preferably, the heating wire 51 is configured as a spiral shape, thereby increasing the contact area between the heating wire 51 and the liquid carbon dioxide and enhancing the heating effect of the heating wire 51.

[0076] Preferably, the heating wire 51 is made of an iron-cobalt-aluminum-molybdenum alloy, which enables the heating wire 51 to rapidly heat liquid carbon dioxide.

[0077] The heating wire 51 and the protective partition 53 are connected by an insulating frame 52, so that the heating component 5 has no cavity structure. This avoids the deformation caused by the pressure inside the outer shell 3 due to the cavity between the heating wire and the outer protective shell of conventional heaters, thereby reducing the risk of damage to the heating component.

[0078] S3: Connect connector 2 to housing 3.

[0079] Further, step S3 includes the following steps:

[0080] S31: Load with liquid carbon dioxide.

[0081] Specifically, liquid carbon dioxide is injected into the outer shell 3.

[0082] S32: Install connector 2.

[0083] Specifically, the connector 2 is connected to the outer shell 3, thereby sealing the liquid carbon dioxide inside the outer shell 3 and keeping the outer shell 3 in a sealed state, thus completing the assembly of the high-power phase change gas heating and excitation device.

[0084] S4: Place a high-power phase change gas heating and excitation device.

[0085] Further, step S4 includes the following steps:

[0086] Step S41: Drill the placement hole.

[0087] Specifically, at locations where gaseous carbon dioxide is needed to perform work, drilling equipment such as drilling rigs is used to drill placement holes. After cleaning the soil and debris from the placement holes, casings are placed to prevent the holes from collapsing.

[0088] Step S42: Place the high-power phase change gas heating and excitation device in the placement hole.

[0089] Specifically, the high-power phase change gas heating and excitation device is transported to the site, the sleeve in the placement hole is removed, and the high-power phase change gas heating and excitation device is placed in the placement hole.

[0090] Preferably, the guide component 4 includes an outlet 41, which is configured as an hourglass structure, thereby allowing the gaseous carbon dioxide ejected from the outlet 41 to achieve a greater flow rate and increase the impact force of the gaseous carbon dioxide.

[0091] Preferably, the guide assembly 4 further includes a guide shell 42, a baffle 43, a fixed slide rod 44, and a compression spring 45. When gaseous carbon dioxide pushes the baffle 43, the fixed slide rod 44 can pass through the guide shell 42 along the through hole 421 and penetrate into the rock and soil around the high-power phase change gas heating and excitation device, thereby fixing the position of the high-power phase change gas heating and excitation device and preventing the high-power phase change gas heating and excitation device from being displaced due to excessive impact force of gaseous carbon dioxide.

[0092] S5: Connect power connector 1.

[0093] Specifically, the power supply is connected to the power connector 1 via a wire to control the power supply to power the heating component 5, so that the heating component 5 heats the liquid carbon dioxide to do work, and the liquid carbon dioxide is converted into gaseous carbon dioxide to break through the explosion baffle to do work.

[0094] Preferably, the power supply adopts a 400V, 500V specification, which can increase the power of the heating component 5 and quickly heat the liquid carbon dioxide.

[0095] Compared with existing technologies, the phase change gas heating method provided by this invention uses a high-power phase change gas heating excitation device, thereby improving the heating efficiency of liquid carbon dioxide without the use of chemical reagents. By setting an insulating frame 52 and a protective partition 53, the heating component 5 is free of cavity structure, preventing excessive pressure inside the outer shell 3 from damaging the heating component 5. This reduces the probability of damage to the heater during the heating process and improves the safety and stability of phase change gas heating. Using electricity instead of chemical powder for heating reduces the cost of phase change gas heating and reduces the generation of toxic and harmful gases during the phase change gas heating process, making the phase change gas heating process greener, cleaner, and more environmentally friendly.

[0096] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in the present invention should be included within the scope of protection of the present invention.

Claims

1. A high power phase change gas heating excitation device, characterized by, The device comprises a power connector (1), a connecting piece (2), a shell (3) and a heating assembly (5), the connecting piece (2) is connected with the shell (3), the power connector (1) is arranged on the connecting piece (2), the heating assembly (5) is arranged in the shell (3), and the power connector (1) is connected with the heating assembly (5) through the connecting piece (2).

2. The high power phase transition gas heating excitation device of claim 1, wherein, An explosion baffle is arranged on the shell (3).

3. The high power phase transition gas heating excitation device of claim 1, wherein, The heating assembly (5) comprises a heating wire (51), the heating wire (51) is connected with the power connector (1) to form a closed loop.

4. The high power phase transition gas heating excitation device of claim 3, wherein, The heating wire (51) is made of iron-cobalt-aluminum-molybdenum alloy.

5. The high power phase transition gas heating excitation device of claim 3, wherein, The heating wire (51) is arranged in a spiral shape.

6. The high power phase transition gas heating initiation device of any of claims 3-5, wherein, The heating assembly (5) further comprises an insulation framework (52) and a protection baffle (53), one end of the insulation framework (52) is connected with the heating wire (51), and the other end is connected with the protection baffle (53).

7. The high power phase transition gas heating excitation device of claim 6, wherein, The protection baffle (53) is connected with the connecting piece (2) to fix and support the heating wire (51).

8. The high power phase transition gas heating excitation device of claim 7, wherein, The heating assembly (5) further comprises a fixing ring (54), the fixing ring (54) is connected with the protection baffle (53) to fix the protection baffle (53).

9. The high power phase transition gas heating excitation device of claim 1, wherein, A guide assembly (4) is further arranged, the guide assembly (4) is connected with the shell (3).

10. A phase change gas heating method, characterized by, The high-power phase-change gas heating excitation device of any one of claims 1-9 is adopted.

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