Protective suit suitable for tunnel high-ground-temperature operation emergency rescue
By incorporating a liquid-cooled circulating heat exchange hose and a cold source back box into the protective suit, and utilizing the inertia and magnetic field of the magnetic core to control the flow of the cooling medium, the thermal management problem of the protective suit in the high ground temperature environment of the tunnel was solved, achieving active cooling and continuous cooling, thus ensuring the safety and operational efficiency of rescue personnel.
Patent Information
- Application Number
- CN202511162461.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-08-19
- Publication Date
- 2025-12-16
AI Technical Summary
In the high-temperature environment of tunnels, traditional heat-insulating protective clothing cannot effectively solve the problems of human body heat generation and sweat evaporation, resulting in a high risk of heat-related diseases and failing to guarantee the life safety and operational efficiency of rescue personnel.
A protective suit was designed with built-in liquid-cooled circulating heat exchange hoses and a cold source back box. It actively cools the suit by circulating a cooling medium and controls the flow of the cooling medium with the help of the inertia and magnetic field of the magnetic core, so as to achieve a cooling effect that is evenly distributed throughout the protective suit.
It achieves active cooling in high-temperature tunnels, reducing the risk of heat-related illnesses and improving the safety and efficiency of workers.
Smart Images
Figure CN121128995A_ABST
Abstract
Description
Technical Field
[0001] This invention belongs to the field of protective clothing. Background Technology
[0002] When conducting emergency rescue operations in high-temperature environments within tunnels (typically referring to ambient temperatures significantly higher than normal, potentially exceeding 40°C or even 50°C), the high-temperature air and heat radiation inside the tunnel itself constitute a direct external heat source. Furthermore, to ensure safety (e.g., to isolate harmful substances and prevent burns), workers must wear highly sealed protective clothing. This combination of factors significantly exacerbates the thermal load on the human body.
[0003] While traditional heat-insulating protective suits are effective at preventing the transfer of external heat to the body, their design has significant limitations: First, the human body itself is a continuous heat source; second, to achieve a heat insulation effect, these suits typically have poor breathability, severely hindering sweat evaporation, the body's primary means of heat dissipation. This results in a rapid formation of a hot and humid microenvironment inside the suit, where heat cannot dissipate effectively and continues to accumulate.
[0004] Therefore, even when wearing traditional heat-resistant clothing, workers' core body temperature can still rise sharply when moving or working inside tunnels, making them highly susceptible to life-threatening heat-related illnesses such as heatstroke, severe dehydration, and heat exhaustion. The large amount of sweat lost without effective evaporation and cooling further exacerbates the risk of dehydration and electrolyte imbalance.
[0005] Therefore, it is evident that protective clothing relying solely on passive heat insulation is insufficient, or even ineffective, in extreme and enclosed emergency rescue scenarios such as high-temperature tunnels. It fails to address the core heat dissipation issues of the human body generating its own heat and the inability of sweat to evaporate. To effectively ensure the safety and operational efficiency of rescue personnel, there is an urgent need to develop and apply a new type of protective clothing capable of actively reducing body surface temperature. Summary of the Invention
[0006] Purpose of the invention: In order to overcome the shortcomings of the existing technology, the present invention provides a protective suit suitable for emergency rescue operations in high-temperature tunnels. When personnel wearing the protective suit walk in high-temperature tunnels, a cold cooling medium is continuously flowing through the liquid-cooled circulating heat exchange hoses evenly distributed throughout the protective suit, thereby achieving the purpose of active cooling.
[0007] Technical Solution: To achieve the above objectives, the present invention provides a protective suit suitable for emergency rescue operations in high-temperature tunnels, comprising a protective suit body, wherein a zigzag distribution of liquid-cooled circulating heat exchange hoses is sewn inside the fabric of the protective suit body, and the liquid-cooled circulating heat exchange hoses are evenly distributed throughout the protective suit body; a cold source back box is fixedly installed on the back side of the protective suit body by a shoulder strap; the cold source back box can store a cold source; the cooled cold heat-conducting medium in the cold source back box can flow out to the cold heat-conducting medium inlet end of the liquid-cooled circulating heat exchange hose, and the water that has been heat-exchanged in the liquid-cooled circulating heat exchange hose can flow into the cold source back box through the heat-conducting medium outlet end of the liquid-cooled circulating heat exchange hose.
[0008] Furthermore, four shoulder straps are distributed on both shoulders and both waists.
[0009] Furthermore, the cold source back box includes an insulated outer shell and a sealed inner liner;
[0010] The inner cavity of the sealed inner liner is a cold source compartment, which is filled with a cold source, such as ice. A central heat exchanger is fixed in the center of the cold source compartment by several supports. The cold source in the cold source compartment is wrapped around the central heat exchanger. The upper and lower ends of the central heat exchanger are respectively connected to a heat conduction medium inlet pipe and a cold heat conduction medium outlet pipe. The heat conduction medium inlet pipe and the cold heat conduction medium outlet pipe are respectively connected to the heat conduction medium outlet end and the cold heat conduction medium inlet end of the liquid-cooled circulating heat exchange hose.
[0011] Furthermore, the central heat exchanger includes a vertical heat exchange tank, with an upper transition shell and a lower transition shell integrally and coaxially arranged at the upper and lower ends of the heat exchange tank, respectively. The upper transition shell and the lower transition shell contain an upper transition chamber and a lower transition chamber, respectively. The upper transition chamber and the lower transition chamber are respectively connected to a heat conduction medium inlet pipe and a cold heat conduction medium outlet pipe.
[0012] Furthermore, a rotating magnetic core is coaxially arranged at the center of the heat exchange tank; an upper guide tube and a lower guide tube are coaxially fixedly connected to the upper and lower ends of the magnetic core.
[0013] The lower end of the upper transition chamber is integrally provided with guide wall a, and the upper end of the lower transition chamber is integrally provided with guide wall b; guide wall a and guide wall b are respectively coaxially connected with upper guide hole and lower guide hole, and upper guide tube and lower guide tube move through the upper guide hole and lower guide hole respectively; the magnetic core can only move up and down under the guidance of the upper guide hole and lower guide hole; an upper support spring is coaxially provided between the magnetic core and guide wall a, and a lower support spring is coaxially provided between the magnetic core and guide wall b, and the magnetic core remains relatively stable under the joint elastic constraint of the upper support spring and lower support spring.
[0014] Furthermore, a partition ring is coaxially arranged inside the heat exchange tank; the outer ring of the partition ring is integrally welded to the lower inner wall of the heat exchange tank along the contour, and the inner ring of the partition ring is clearance-fitted with the lower outer wall of the magnetic core; the upper and lower sides of the partition ring are respectively the upper and lower volume chambers; both the upper and lower volume chambers are filled with liquid cooling medium.
[0015] A magnetic core assist coil is coaxially arranged on the inner wall of the upper volume chamber. The magnetic field generated by the magnetic core assist coil after being energized will act on the magnetic core body. Several 'a' connecting holes are hollowed out on the guide wall a, and several 'b' connecting holes are hollowed out on the guide wall b. The upper transition chamber is connected to the upper volume chamber through several 'a' connecting holes, and the lower transition chamber is connected to the lower volume chamber through several 'b' connecting holes. The upper guide tube, lower guide tube and magnetic core body together form an integrated structure with a through liquid guiding channel set along the axial direction inside. The upper and lower ends of the liquid guiding channel are connected to the upper transition chamber and the lower transition chamber respectively.
[0016] A one-way valve (a) is installed at the connection between the heat conduction medium inlet pipe and the upper transition chamber, a one-way valve (b) is installed in the liquid guiding channel, and a one-way valve (c) is installed at the connection between the cold heat conduction medium outlet pipe and the lower transition chamber; the conduction direction of one-way valves (a), (b), and (c) is downward.
[0017] Furthermore, the lower end of the overall columnar magnetic core is integrally provided with a lower cone that is tapered at the bottom and thickened at the top. During the upward floating process of the magnetic core relative to the heat exchange tank, when the upward floating stroke of the magnetic core is sufficient for the lower cone to rise with the magnetic core to the height of the partition ring disk, an annular connecting channel is formed between the outer wall of the lower cone and the inner ring of the partition ring disk, connecting the upper and lower volume chambers.
[0018] Furthermore, it also includes a power supply unit that can supply power to the magnetic core assist coil, and a voltmeter that can detect the induced voltage across the magnetic core assist coil.
[0019] Furthermore, a working method for protective clothing suitable for emergency rescue operations in high-temperature tunnels involves the following: When walking, the body moves up and down periodically with the rhythm of walking and running. The magnetic core suspended inside the heat exchange tank floats up and down relative to the heat exchange tank due to its own inertia. The up-and-down movement of the magnetic core induces a voltage in the magnetic core assist coil in the corresponding direction. The direction of the voltage across the magnetic core assist coil is then detected to determine whether the magnetic core is moving upward or downward at any given time. When the magnetic core floats upward relative to the heat exchange tank due to inertia, the power supply unit immediately energizes the magnetic core assist coil in the forward direction and then immediately cuts off the power. When the magnetic core floats downward relative to the heat exchange tank due to inertia, the power supply unit immediately energizes the magnetic core assist coil in the reverse direction and then immediately cuts off the power.
[0020] Beneficial effects: The present invention enables personnel wearing protective clothing to walk in high-temperature tunnels, during which time the liquid-cooled circulating heat exchange hoses evenly distributed throughout the protective clothing body continuously flow with a cold cooling medium, thereby achieving the purpose of active cooling.
[0021] When the magnetic core floats upward relative to the heat exchange tank under the action of inertia, the magnetic field generated by the positively energized magnetic core assist coil applies an upward magnetic field to the magnetic core, making the magnetic core float upward relative to the heat exchange tank more smoothly.
[0022] When the magnetic core floats downward relative to the heat exchange tank due to inertia, the magnetic field generated by the reverse-energized magnetic core assist coil applies a downward magnetic field to the magnetic core, making the magnetic core float downward more smoothly relative to the heat exchange tank; making full use of the inertia of the magnetic core and the up-and-down fluctuations when a person walks to achieve the purpose of saving electricity.
[0023] When personnel wearing protective suits perform large movements such as running or jumping, during any one of the upward and downward floating cycles of the magnetic core, the lower cone rises with the magnetic core to the height of the dividing ring disk. This creates a ring-shaped connecting channel between the outer wall of the lower cone and the inner ring of the dividing ring disk, linking the upper and lower volume chambers. This allows the upper and lower volume chambers to connect directly when the magnetic core floats upward beyond a certain distance. This suppresses the pressure difference between the upper and lower volume chambers at that moment, thereby inhibiting the cold circulation rate when personnel wearing protective suits perform large movements such as running or jumping. This prevents the cold source stored in the cold source back box from being consumed too quickly, improving the sustainability of the cooling process of the protective suit itself. Attached Figure Description
[0024] Figure 1 This is a diagram showing the front and back of the protective suit;
[0025] Figure 2 This is a schematic diagram of the back box of the cold source;
[0026] Figure 3 This is a schematic diagram of the first structure of the central heat exchanger.
[0027] Figure 4 This is a schematic diagram of the second structure of the central heat exchanger. Detailed Implementation
[0028] The invention will now be further described with reference to the accompanying drawings.
[0029] As attached Figures 1 to 4 The image shows a protective suit suitable for emergency rescue operations in high-temperature tunnels, such as... Figure 1The protective suit includes a main body 1. Inside the fabric of the main body 1, there are zigzag liquid-cooled circulating heat exchange hoses 6. The liquid-cooled circulating heat exchange hoses 6 are made of flexible polytetrafluoroethylene (PTFE) hoses. The liquid cooling medium inside the liquid-cooled circulating heat exchange hoses 6 is pure water or ethylene glycol aqueous solution, etc. The liquid-cooled circulating heat exchange hoses 6 are evenly distributed in various parts of the main body 1, such as the chest, legs and back. A cold source back box 4 is fixed to the back of the main body 1 by a shoulder strap 3. The four shoulder straps 3 are distributed on the two shoulders and two waists respectively.
[0030] The cold source back box 4 can store the cold source; the cooled heat transfer medium in the cold source back box 4 can flow out to the cold heat transfer medium inlet 5 of the liquid cooling circulation heat exchange hose 6, and the water that has been heat exchanged in the liquid cooling circulation heat exchange hose 6 can flow into the cold source back box 4 through the heat transfer medium outlet 2 of the liquid cooling circulation heat exchange hose 6.
[0031] like Figure 2 , 3 4. The cold source back box 4 includes an insulated outer shell 12 and a sealed inner liner 13; the heat exchange tank 30 is a thin-walled metal shell structure, and a number of heat exchange fins 18 are evenly arranged on the outer shell wall of the heat exchange tank 30 to improve its heat exchange capacity; a detachable sealed top cover 14 is provided on the upper side of the integrated structure formed by the insulated outer shell 12 and the sealed inner liner 13; a detachable drain sealing plug 42 is provided at the bottom of the integrated structure formed by the insulated outer shell 12 and the sealed inner liner 13.
[0032] The inner cavity of the sealed inner liner 13 is a cold source chamber 10, which is filled with a cold source, such as ice. A central heat exchanger 7 is fixedly installed in the center of the cold source chamber 10 by several supports 11. The cold source in the cold source chamber 10 is wrapped around the central heat exchanger 7. The upper and lower ends of the central heat exchanger 7 are respectively connected to a heat conduction medium inlet pipe 8 and a cold heat conduction medium outlet pipe 9. The heat conduction medium inlet pipe 8 and the cold heat conduction medium outlet pipe 9 are respectively connected to the heat conduction medium outlet end 2 and the cold heat conduction medium inlet end 5 of the liquid-cooled circulating heat exchange hose 6.
[0033] The central heat exchanger 7 includes a vertical heat exchange tank 30. An upper transition shell 34 and a lower transition shell 23 are integrally and coaxially arranged at the upper and lower ends of the heat exchange tank 30, respectively. An upper transition chamber 15 and a lower transition chamber 25 are located inside the upper transition shell 34 and lower transition shell 23, respectively. The upper transition chamber 15 and lower transition chamber 25 are respectively connected to a heat conduction medium inlet pipe 8 and a cold heat conduction medium outlet pipe 9. A rotating magnetic core 28 is coaxially arranged at the axis of the heat exchange tank 30. The magnetic core 28 is made of magnetic material with magnetic poles at both ends. The upper and lower ends of the magnetic core 28 are coaxially fixedly connected with an upper guide tube 33 and a lower guide tube 22; the lower end of the upper transition chamber 15 is integrally provided with a guide wall 53, and the upper end of the lower transition chamber 25 is integrally provided with a guide wall 54; the guide wall 53 and the guide wall 54 are respectively coaxially connected with an upper guide hole 16 and a lower guide hole 26, and the upper guide tube 33 and the lower guide tube 22 respectively move through the upper guide hole 16 and the lower guide hole 26; the magnetic core 28 can only move up and down under the guidance of the upper guide hole 16 and the lower guide hole 26.
[0034] An upper support spring 32 is coaxially arranged between the magnetic core 28 and the guide wall 53 (a), and a lower support spring 27 is coaxially arranged between the magnetic core 28 and the guide wall 54 (b). The magnetic core 28 remains relatively stable under the joint elastic constraint of the upper support spring 32 and the lower support spring 27. A partition ring disk 20 is coaxially arranged inside the heat exchange tank 30. The partition ring disk 20 is a hard metal sheet structure. The outer ring of the partition ring disk 20 is integrally welded to the lower inner wall of the heat exchange tank 30 along the contour. The inner ring 20a of the partition ring disk 20 is in clearance fit with the lower outer wall of the magnetic core 28. In the initial state, the clearance is controlled within 0.3 mm. The upper and lower sides of the partition ring disk 20 are the upper volume chamber 29 and the lower volume chamber 21, respectively. Both the upper volume chamber 29 and the lower volume chamber 21 are filled with liquid cooling medium, such as pure water or ethylene glycol aqueous solution.
[0035] A magnetic core assist coil 31 is coaxially arranged on the inner wall of the upper volume chamber 29. The magnetic field generated by the magnetic core assist coil 31 after being energized will act on the magnetic core body 28. The vertical displacement of the magnetic core body 28 will also generate an induced current in the magnetic core assist coil 31. It also includes a power supply unit that can supply power to the magnetic core assist coil 31, and a voltmeter that can detect the induced voltage at both ends of the magnetic core assist coil 31.
[0036] The guide wall 53 has several a-connecting holes 51, and the guide wall 54 has several b-connecting holes 52. The upper transition chamber 15 is connected to the upper volume chamber 29 through several a-connecting holes 51, and the lower transition chamber 25 is connected to the lower volume chamber 21 through several b-connecting holes 52. The upper guide tube 33, the lower guide tube 22 and the magnetic core 28 together form an integrated structure with a through liquid guiding channel 17 along the axial direction. The upper and lower ends of the liquid guiding channel 17 are connected to the upper transition chamber 15 and the lower transition chamber 25, respectively. A one-way valve 35 is provided at the connection between the heat conduction medium inlet pipe 8 and the upper transition chamber 15. A one-way valve 19 is provided in the liquid guiding channel 17. A one-way valve 24 is provided at the connection between the cold heat conduction medium outlet pipe 9 and the lower transition chamber 25. The conduction direction of the one-way valve 35, the one-way valve 19 and the one-way valve 24 is downward.
[0037] Working principle:
[0038] Emergency workers first put on this protective suit. Before entering the high-temperature tunnel, the personnel wearing the protective suit first fill the cold source chamber 10 with enough ice and other cold sources. Then, the cold source chamber 10 is sealed and insulated. The cold source in the cold source chamber 10 continuously absorbs the heat of the cooling medium in the upper volume chamber 29 and lower volume chamber 21 in the central heat exchanger 7, so that the temperature of the cooling medium in the upper volume chamber 29 and lower volume chamber 21 is always kept at a low level.
[0039] Meanwhile, when personnel wearing protective suits walk and move forward in the high-temperature tunnel, their bodies will periodically rise and fall with the rhythm of walking and running. This will cause the cold source back box 4 and the internal heat exchange tank 30 to periodically rise and fall with the rhythm of walking. The faster the walking rhythm, the faster the rising and falling frequency of the cold source back box 4 and the internal heat exchange tank 30. The larger the stride or amplitude of walking, the greater the amplitude of the rising and falling of the cold source back box 4 and the internal heat exchange tank 30. During the rising and falling of the heat exchange tank 30, the magnetic core 28 suspended in the inner cavity of the heat exchange tank 30 will float up and down relative to the heat exchange tank 30 under its own inertia.
[0040] The up-and-down movement of the magnetic core 28 will generate an induced voltage in the magnetic core assist coil 31 in the corresponding direction. Then, by detecting the voltage direction at both ends of the magnetic core assist coil 31, it can be determined whether the magnetic core 28 is moving upward or downward at any given time.
[0041] When the magnetic core 28 floats upward relative to the heat exchange tank 30 under the action of inertia, the power supply unit immediately energizes the magnetic core assist coil 31 in the positive direction and then immediately de-energizes it. The magnetic field generated by the positively energized magnetic core assist coil 31 applies an upward magnetic field assist to the magnetic core 28, making the magnetic core 28 float upward relative to the heat exchange tank 30 more smoothly. Under the combined action of inertia and magnetic field assist, the magnetic core 28 surges upward a certain distance. During the process of the magnetic core 28 surging upward a certain distance, the volume of the upper volume chamber 29 gradually decreases and the volume of the lower volume chamber 21 gradually increases. Since the conduction direction of one-way valve 35, one-way valve 19 and one-way valve 24 are all downward, the liquid cooling medium in the upper volume chamber 29 will only be pushed downward into the lower volume chamber 21 through the liquid guiding channel 17.
[0042] When the magnetic core 28 floats downward relative to the heat exchange tank 30 under the action of inertia, the power supply unit immediately reverses the power supply to the magnetic core assist coil 31 and then immediately cuts off the power supply. The magnetic field generated by the reverse-energized magnetic core assist coil 31 applies a downward magnetic field assist to the magnetic core 28, making the magnetic core 28 float downward relative to the heat exchange tank 30 more smoothly. Under the combined action of inertia and magnetic field assist, the magnetic core 28 surges downward a certain distance. During the process of the magnetic core 28 surging downward a certain distance, the volume of the upper volume chamber 29 gradually increases and the volume of the lower volume chamber 21 gradually decreases. Since the conduction direction of one-way valve 35, one-way valve 19 and one-way valve 24 are all downward, the gradually increasing upper volume chamber 29 gradually absorbs the cooling medium in the heat conduction medium inlet pipe 8 through the upper transition chamber 15, and the gradually decreasing liquid cooling medium in the lower volume chamber 21 is pushed downward through the lower transition chamber 25 and discharged into the cold heat conduction medium outlet pipe 9.
[0043] Therefore, as the magnetic core 28 continuously floats up and down relative to the heat exchange tank 30 in a periodic manner, the cooled heat-conducting medium in the heat exchange tank 30 gradually flows out through the cold heat-conducting medium outlet pipe 9 to the cold heat-conducting medium inlet 5 of the liquid-cooled circulating heat exchange hose 6. The heat-exchanged hot cooling medium in the liquid-cooled circulating heat exchange hose 6 continuously flows into the heat exchange tank 30 through the hot heat-conducting medium outlet 2 of the liquid-cooled circulating heat exchange hose 6 and the hot heat-conducting medium inlet pipe 8. Thus, when personnel wearing protective clothing walk in the high-temperature tunnel, the cold cooling medium is continuously flowing through the liquid-cooled circulating heat exchange hose 6, which is evenly distributed in various parts of the protective clothing body 1, thereby achieving the purpose of active cooling.
[0044] When personnel wearing protective suits perform large movements such as running or jumping, the vertical fluctuation of the magnetic core 28 relative to the heat exchange tank 30 will increase significantly. This large vertical fluctuation of the magnetic core 28 will excessively accelerate the circulation speed of the liquid-cooled circulating heat exchange hose 6, causing the cold source stored in the cold source back box 4 to be consumed too quickly. This will seriously affect the continuity of the cooling process of the protective suit body 1, resulting in a shortened cooling time. The personnel may lose the cooling function before completing their work, which is very dangerous for the personnel wearing protective suits. Therefore, based on the above structure, this solution further designs the following optimized structure:
[0045] like Figure 4 As shown, the lower end of the overall columnar magnetic core 28 is integrally provided with a lower cone 28a that is tapered at the bottom and thickened at the top. During the upward floating process of the magnetic core 28 relative to the heat exchange tank 30, in the normal walking state, the relative up and down floating amplitude of the magnetic core 28 is small, and the lower cone 28a will never reach the height of the separating ring disk 20. Thus, the upper volume chamber 29 and the lower volume chamber 21 are always separated by the separating ring disk 20. The alternating change of the volume of the upper volume chamber 29 and the lower volume chamber 21 realizes efficient heat exchange cycle.
[0046] When personnel wearing protective suits perform large movements such as running or jumping, during any up-and-down floating cycle of the magnetic core 28, the upward floating stroke of the magnetic core 28 will cause the lower cone 28a to rise with the magnetic core 28 to the height of the separating ring disk 20. This creates an annular connecting channel between the outer wall of the lower cone 28a and the inner ring 20a of the separating ring disk 20, connecting the upper volume chamber 29 and the lower volume chamber 21. This allows the upper volume chamber 29 and the lower volume chamber 21 to connect, thereby enabling the magnetic core 28 to... Each time the upward movement exceeds a certain range, the upper volume chamber 29 and the lower volume chamber 21 are directly connected through the annular connecting channel between the outer wall of the lower cone 28a and the inner ring 20a of the separating ring disk 20. This suppresses the pressure difference between the upper volume chamber 29 and the lower volume chamber 21 at this moment, thereby suppressing the cold circulation rate when the person wearing the protective clothing makes large movements such as running / jumping, preventing the cold source stored in the cold source back box 4 from being consumed too quickly, and improving the continuity of the cooling process of the protective clothing body 1.
[0047] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.
Claims
1. A protective suit suitable for emergency rescue operations in high-temperature tunnels, characterized in that: The protective suit includes a protective suit body (1), and the fabric of the protective suit body (1) is sewn with liquid-cooled circulating heat exchange hoses (6) that are distributed in a tortuous manner. The liquid-cooled circulating heat exchange hoses (6) are evenly arranged in various parts of the protective suit body (1). A cold source back box (4) is fixedly installed on the back side of the protective suit body (1) by a shoulder strap (3). The cold source back box (4) can store the cold source; the cooled heat-conducting medium in the cold source back box (4) can flow out to the cold heat-conducting medium inlet (5) of the liquid cooling circulating heat exchange hose (6), and the water in the liquid cooling circulating heat exchange hose (6) that has been heated can flow into the cold source back box (4) through the heat-conducting medium outlet (2) of the liquid cooling circulating heat exchange hose (6).
2. The protective clothing for emergency rescue operations in high-temperature tunnels according to claim 1, characterized in that: The four shoulder straps (3) are distributed on the two shoulders and two waists respectively.
3. The protective clothing for emergency rescue operations in high-temperature tunnels according to claim 1, characterized in that: The cold source back box (4) includes an insulated outer shell (12) and a sealed inner liner (13); the inner cavity of the sealed inner liner (13) is a cold source chamber (10), which is filled with a cold source, such as ice; a central heat exchanger (7) is fixedly installed in the center of the cold source chamber (10) by several supports (11); the cold source in the cold source chamber (10) is wrapped around the central heat exchanger (7); the upper and lower ends of the central heat exchanger (7) are respectively connected to a heat conduction medium inlet pipe (8) and a cold heat conduction medium outlet pipe (9); the heat conduction medium inlet pipe (8) and the cold heat conduction medium outlet pipe (9) are respectively connected to the heat conduction medium outlet end (2) and the cold heat conduction medium inlet end (5) of the liquid-cooled circulating heat exchange hose (6).
4. The protective clothing for emergency rescue operations in high-temperature tunnels according to claim 3, characterized in that: The central heat exchanger (7) includes a vertical heat exchange tank (30). The upper and lower ends of the heat exchange tank (30) are respectively integrally and coaxially provided with an upper transition shell (34) and a lower transition shell (23). The upper transition shell (34) and the lower transition shell (23) contain an upper transition chamber (15) and a lower transition chamber (25), respectively. The upper transition chamber (15) and the lower transition chamber (25) are respectively connected to a heat conduction medium inlet pipe (8) and a cold heat conduction medium outlet pipe (9).
5. The protective clothing for emergency rescue operations in high-temperature tunnels according to claim 4, characterized in that: A rotating magnetic core (28) is coaxially arranged at the center of the heat exchange tank (30); the upper and lower ends of the magnetic core (28) are coaxially fixedly connected to an upper guide tube (33) and a lower guide tube (22). The lower end of the upper transition chamber (15) is integrally provided with a guide wall (53), and the upper end of the lower transition chamber (25) is integrally provided with a guide wall (54). The guide wall (53) and the guide wall (54) are respectively coaxially connected with an upper guide hole (16) and a lower guide hole (26). The upper guide tube (33) and the lower guide tube (22) respectively move through the upper guide hole (16) and the lower guide hole (26). The magnetic core (28) can only move up and down under the guidance of the upper guide hole (16) and the lower guide hole (26). The magnetic core (28) is coaxially provided with an upper support spring (32) between the magnetic core (28) and the guide wall (53), and the magnetic core (28) is coaxially provided with a lower support spring (27) between the magnetic core (28) and the guide wall (54). The magnetic core (28) remains relatively stable under the common elastic constraint of the upper support spring (32) and the lower support spring (27).
6. The protective clothing for emergency rescue operations in high-temperature tunnels according to claim 5, characterized in that: The heat exchange tank (30) is coaxially provided with a partition ring disk (20); the outer ring of the partition ring disk (20) is integrally connected to the lower inner wall of the heat exchange tank (30) along the contour, and the inner ring (20a) of the partition ring disk (20) is clearance-fitted with the lower outer wall of the magnetic core (28); the upper and lower sides of the partition ring disk (20) are respectively the upper volume chamber (29) and the lower volume chamber (21); both the upper volume chamber (29) and the lower volume chamber (21) are filled with liquid cooling medium; A magnetic core assist coil (31) is coaxially arranged on the inner wall of the upper volume chamber (29). The magnetic field generated by the magnetic core assist coil (31) after being energized will act on the magnetic core (28). Several a connecting holes (51) are hollowed out on the a guide wall (53), and several b connecting holes (52) are hollowed out on the b guide wall (54). The upper transition chamber (15) is connected to the upper volume chamber (29) through several a connecting holes (51), and the lower transition chamber (25) is connected to the lower volume chamber (21) through several b connecting holes (52). The upper guide tube (33), the lower guide tube (22) and the magnetic core (28) together form an integrated structure with a through liquid guiding channel (17) arranged along the axial direction inside. The upper and lower ends of the liquid guiding channel (17) are connected to the upper transition chamber (15) and the lower transition chamber (25) respectively. A one-way valve (35) is provided at the connection between the heat conduction medium inlet pipe (8) and the upper transition chamber (15), a one-way valve (19) is provided in the liquid guide channel (17), and a one-way valve (24) is provided at the connection between the cold heat conduction medium outlet pipe (9) and the lower transition chamber (25); the conduction direction of the one-way valve (35), the one-way valve (19) and the one-way valve (24) is downward.
7. The protective clothing for emergency rescue operations in high-temperature tunnels according to claim 4, characterized in that: The lower end of the overall columnar magnetic core (28) is integrally provided with a lower cone (28a) that is tapered at the bottom and thickened at the top. During the upward floating process of the magnetic core (28) relative to the heat exchange tank (30), when the upward floating stroke of the magnetic core (28) is sufficient to allow the lower cone (28a) to rise with the magnetic core (28) to the height of the partition ring disk (20), an annular connecting channel is formed between the outer wall of the lower cone (28a) and the inner ring (20a) of the partition ring disk (20), connecting the upper volume chamber (29) and the lower volume chamber (21).
8. The protective clothing for emergency rescue operations in high-temperature tunnels according to claim 7, characterized in that: It also includes a power supply unit that can supply power to the magnetic core assist coil (31), and a voltmeter that can detect the induced voltage across the magnetic core assist coil (31).
9. The working method of the protective clothing suitable for emergency rescue operations in high-temperature tunnels according to claim 8, characterized in that: When walking, a person's body will rise and fall periodically with the rhythm of walking and running. The magnetic core (28) suspended in the inner cavity of the heat exchange tank (30) floats up and down relative to the heat exchange tank (30) under its own inertia. The up and down movement of the magnetic core (28) will generate an induced voltage in the magnetic core assist coil (31) in the corresponding direction. Then, by detecting the voltage direction at both ends of the magnetic core assist coil (31), it can be determined whether the magnetic core (28) is moving upward or downward at any time. When the magnetic core (28) floats upward relative to the heat exchange tank (30) under the action of inertia, the power supply unit immediately energizes the magnetic core assist coil (31) in the forward direction and then immediately cuts off the power. When the magnetic core (28) floats downward relative to the heat exchange tank (30) under the action of inertia, the power supply unit immediately energizes the magnetic core assist coil (31) in the reverse direction and then immediately cuts off the power.