Hard hyperbaric oxygen chamber and safety early warning device thereof

Abstract

A safety early warning device for a hard hyperbaric oxygen chamber comprises elastic resistance wires arranged on the surface of a chamber body of the hard hyperbaric oxygen chamber; the pressure sensor is used for monitoring the pressure intensity in the chamber in real time and identifying the normal pressure state and the pressurization state of the hard hyperbaric oxygen chamber; the resistance monitoring circuit is connected with the elastic resistance wire and is used for detecting and collecting the resistance value of the elastic resistance wire in each state in real time; the signal processing circuit is connected with the pressure sensor and the resistance monitoring circuit, and is used for comparing the deviation value of the resistance value, judging that the cabin material has plastic deformation when the deviation value exceeds a preset threshold value, and receiving a pressure feedback signal of the pressure sensor; the emergency response equipment is connected with the signal processing circuit and used for receiving the monitoring result signal or the control signal of the signal processing circuit so as to carry out corresponding early warning operation, and the hard hyperbaric oxygen chamber and the safety early warning device thereof have the advantages of being safe, reliable and timely in response when the chamber body deforms plastically.

Description

Technical Field

[0001] This utility model relates to the field of rigid hyperbaric oxygen chamber technology, specifically to a rigid hyperbaric oxygen chamber and its safety warning device. Background Technology

[0002] Rigid hyperbaric oxygen chambers are primarily made of aluminum alloy and steel. Under pressure, the chamber expands to a certain extent and returns to its normal state after decompression; this process is elastic deformation. During use, the chamber undergoes hundreds or thousands of elastic deformations. This process leads to gradual fatigue of the metal. A major phenomenon of metal fatigue is plastic deformation, meaning that after the metal chamber is pressurized and then decompressed to normal pressure, the expansion does not return to its original state, and the chamber material loses its elasticity. The loss of elasticity weakens the material's pressure resistance. With subsequent pressurization, the deformation accumulates, which may cause the chamber to suddenly collapse, directly threatening the lives of the operators. Furthermore, plastic deformation is irreversible. Once it occurs, it indicates that the metal fatigue has reached a critical value. If there is no timely warning, at best, the chamber needs to be shut down and replaced, resulting in economic losses; at worst, the patient's treatment process is interrupted due to equipment failure, threatening the patient's life.

[0003] Currently, there is a lack of safety early warning devices in the field of rigid hyperbaric oxygen chambers that can respond in a timely manner to plastic deformation of the chamber. Traditional safety early warning devices rely solely on pressure sensors or manual visual inspection to assess safety, and the safety mechanism is only passively triggered when the chamber breaks or is severely deformed. They cannot monitor the fatigue accumulation caused by repeated pressurization in real time. Therefore, there is an urgent need for a rigid hyperbaric oxygen chamber and its safety early warning device to solve the above problems. Utility Model Content

[0004] In view of this, a safe and reliable rigid hyperbaric oxygen chamber and its safety early warning device that can respond promptly when the chamber undergoes plastic deformation are provided.

[0005] A safety warning device for a rigid hyperbaric oxygen chamber, triggered when the chamber body undergoes plastic deformation, includes:

[0006] Elastic resistance wires are laid on the surface of the rigid hyperbaric oxygen chamber; pressure sensors are used to monitor the pressure inside the chamber in real time and identify the atmospheric pressure state and pressurized state of the rigid hyperbaric oxygen chamber.

[0007] A resistance monitoring circuit, connected to the elastic resistance wire, is used to detect and collect data on the elastic resistance wire in real time under the influence of the rigid...

[0008] The system includes: an initial resistance value under normal pressure, a deformation resistance value under pressurization, and resistance recovery data after returning to normal pressure in a hyperbaric oxygen chamber; a signal processing circuit connected to the pressure sensor and the resistance monitoring circuit, used to compare the deviation between the initial resistance value and the resistance recovery data, and to determine that the chamber material has undergone plastic deformation when the deviation exceeds a preset threshold, and to receive the pressure feedback signal from the pressure sensor; and an emergency response device connected to the signal processing circuit, used to receive the monitoring result signal or control signal from the signal processing circuit to perform corresponding early warning operations.

[0009] Furthermore, the elastic resistance wire is in the form of a tension spring structure. The overall outline of the tension spring structure is a flat, thin sheet-like tension spring. The lower surface of the entire tension spring along its length is in close contact with the surface of the rigid hyperbaric oxygen chamber, so that the deformation of the chamber surface can cause the deformation of the elastic resistance wire.

[0010] Furthermore, the elastic resistance wire extends in an S-shape or Z-shape along the principal stress direction of the deformation of the rigid hyperbaric oxygen chamber.

[0011] Furthermore, the elastic resistance wire is disposed in the stress concentration area of ​​the rigid hyperbaric oxygen chamber.

[0012] Furthermore, the resistance monitoring circuit includes a Wheatstone bridge.

[0013] Furthermore, the safety warning device also includes a memory for storing the initial resistance value, the deformation resistance value, and the resistance recovery data, and is connected to the signal processing circuit.

[0014] Furthermore, the elastic resistance wire is arranged in a winding and tortuous manner around the stress concentration center of the cabin, and the overall extension direction of the elastic resistance wire is circular, with the center of the circle being the stress concentration center of the cabin.

[0015] Furthermore, an insulating layer is provided between the elastic resistance wire and the surface of the cabin. The elastic resistance wire is a spring-shaped structure formed by engraving or etching metal foil. The metal foil and the insulating layer are integrally formed. The insulating layer is fixed to the surface of the cabin.

[0016] Furthermore, the emergency response equipment includes at least one of an audible and visual alarm, a cabin pressure locking module, and a remote signal transmitter. The signal processing circuit includes a counter and a signal comparator. The preset threshold is used as the reference value of the signal comparator, and the deviation is converted into a reference value of the signal comparator. When the deviation exceeds the preset threshold, the signal comparator outputs an abnormal signal and sends the abnormal signal to the emergency response equipment.

[0017] A rigid hyperbaric oxygen chamber includes a chamber body and a safety warning device installed on the chamber body. The safety warning device is a safety warning device for a rigid hyperbaric oxygen chamber as described in any of the above claims. At least one chamber wall of the chamber body is provided with an elastic resistance wire of the safety warning device for the rigid hyperbaric oxygen chamber.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] This rigid hyperbaric oxygen chamber and its safety warning device use an elastic resistance wire fixed to the surface of the chamber, allowing the wire to deform synchronously with the chamber. This converts the degree of material deformation into a quantifiable change in resistance. By combining a resistance monitoring circuit and a signal processing circuit, the resistance changes of the elastic resistance wire before and after pressurization are compared to determine whether plastic deformation has occurred in the chamber. If plastic deformation occurs, the emergency response equipment connected to the signal processing circuit is immediately activated. This solves the problem of real-time warning of plastic deformation in the chamber, making the rigid hyperbaric oxygen chamber safer and more reliable. Moreover, the material properties of the elastic resistance wire allow it to withstand long-term pressure changes in the chamber, making the safety warning device a long-term monitoring device that can monitor up to the lifespan limit of the chamber. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the frame of a rigid hyperbaric oxygen chamber and its safety warning device according to an embodiment of the present invention.

[0021] Figure 2 This is a structural schematic diagram of a rigid hyperbaric oxygen chamber according to an embodiment of the present invention.

[0022] Figure 3 This is a schematic diagram of the elastic resistance wire and insulation layer of the safety warning device for the rigid hyperbaric oxygen chamber in this embodiment of the present invention.

[0023] Figure 4 This is a schematic diagram of the safety warning device for the hard hyperbaric oxygen chamber in this embodiment of the present invention.

[0024] In the picture,

[0025] 1. Hard hyperbaric oxygen chamber; 2. Elastic resistance wire; 3. Pressure sensor; 4. Resistance monitoring circuit; 5. Signal processing circuit; 6. Memory; 7. Emergency response equipment; 8. Insulation layer; 9. First end of elastic resistance wire; 10. Second end of elastic resistance wire. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0027] Please see Figures 1 to 4 This illustration shows an embodiment of the present invention providing a rigid hyperbaric oxygen chamber and its safety warning device. The safety warning device is triggered when the chamber body of the rigid hyperbaric oxygen chamber undergoes plastic deformation. The safety warning device includes:

[0028] Elastic resistance wire 2 is laid on the surface of the rigid hyperbaric oxygen chamber 1; pressure sensor 3 is used to monitor the pressure inside the chamber in real time and identify the normal pressure state and pressurized state of the rigid hyperbaric oxygen chamber 1.

[0029] Resistance monitoring circuit 4, connected to the elastic resistance wire 2, is used to detect and collect data on the resistance of the elastic resistance wire 2 in real time.

[0030] The system describes the initial resistance value under normal pressure, the deformation resistance value under pressurized conditions, and the resistance recovery data after returning to normal pressure in the rigid hyperbaric oxygen chamber 1. A signal processing circuit 5, connected to the pressure sensor 3 and the resistance monitoring circuit 4, compares the deviation between the initial resistance value and the resistance recovery data. When the deviation exceeds a preset threshold, it determines that the chamber material has undergone plastic deformation and receives the pressure feedback signal from the pressure sensor 3. In some specific embodiments, the signal processing circuit 5 is controlled by a microcontroller. The complete initial resistance value, deformation resistance value, and resistance recovery data corresponding to the normal pressure, pressurized, and normal pressure state signals monitored by the signal processing circuit 5 are considered as one complete working cycle. A counter extracts the initial resistance value and resistance recovery data under normal pressure conditions before and after a complete working cycle. An emergency response device 7, connected to the signal processing circuit 5, receives the monitoring result signal or control signal from the signal processing circuit 5 to perform corresponding early warning operations.

[0031] Specifically, the elastic resistance wire 2 is in the form of a tension spring structure. The overall outline of the tension spring structure is a flat, thin sheet-like tension spring. The lower surface of the entire tension spring along its length is in close contact with the surface of the rigid hyperbaric oxygen chamber 1, so that the deformation of the chamber surface can cause the deformation of the elastic resistance wire 2.

[0032] Specifically, the elastic resistance wire 2 extends in an S-shape or Z-shape along the principal stress direction of the deformation of the rigid hyperbaric oxygen chamber 1.

[0033] Specifically, the elastic resistance wire 2 is disposed in the stress concentration area of ​​the rigid hyperbaric oxygen chamber 1. More specifically, the stress area may be the door seam, the edge of the observation window, or other weld areas.

[0034] In some specific embodiments, multiple sets of elastic resistance wires 2 can be set. Multiple sets of elastic resistance wires 2 can be evenly distributed in the high-stress area along the circumference of the rigid hyperbaric oxygen chamber 1. The electrical signal of each set of elastic resistance wires 2 is independent. As long as the resistance deviation value of one set of elastic resistance wires 2 exceeds the preset threshold, the chamber will immediately trigger the emergency response device 7.

[0035] Specifically, the resistance monitoring circuit 4 includes a Wheatstone bridge. More specifically, the two ends of the elastic resistance wire 2 are a first end 9 and a second end 10, respectively, and the first end 9 and the second end 10 are connected to the Wheatstone bridge.

[0036] Specifically, the safety warning device also includes a memory 6, which is used to store the initial resistance value, the deformation resistance value, and the resistance recovery data, and is connected to the signal processing circuit 5.

[0037] Specifically, the elastic resistance wire 2 is arranged in a tortuous manner around the stress concentration center of the cabin, and the overall extension direction of the elastic resistance wire 2 is circular, with the center of the circle being the stress concentration center of the cabin.

[0038] like Figure 3 As shown, in some specific embodiments, the rigid hyperbaric oxygen chamber 1 is typically a metal chamber made of iron, steel, or aluminum alloy. The elastic resistance wire 2 is a monitoring structure used to monitor and provide feedback on chamber deformation. The resistance change of the elastic resistance wire 2 during chamber deformation is detected using a Wheatstone bridge. After the Wheatstone bridge completes the detection, it converts the resistance change into an analog voltage value and outputs it to an AD converter. The AD converter converts the analog voltage value into a digital signal and sends it to a register. Simultaneously, the pressure sensor 3 transmits the corresponding pressurization / depressurization status signal to a counter. The register, based on the counter signal, transmits the digital signal from the AD converter—that is, the data before and after pressurization—to the I / O control port. The I / O control port continues to transmit the data to a signal comparator. The signal comparator compares the data before and after pressurization. If the data match, a safety command is sent to actuator A, which is the memory module 6. If the data differ, an abnormal command is sent to actuator B, which is the emergency response device module 7. The electronic components shown in the figure are conventional functional components and are directly applied to this embodiment of the invention.

[0039] Specifically, an insulating layer 8 is provided between the elastic resistance wire 2 and the surface of the cabin. The elastic resistance wire 2 is a spring-shaped structure formed by engraving or etching metal foil. The metal foil and the insulating layer 8 are integrally formed. The insulating layer 8 is fixed to the surface of the cabin.

[0040] In some specific embodiments, the elastic resistance wire 2 is preferably a ring-shaped tension spring resistance wire. The specific structure of the ring-shaped tension spring resistance wire is that 8 tension spring-style resistance wires extending in an S-shape or Z-shape are connected in a ring with their ends grounded to form a complete loop. The first end of the first tension spring-style resistance wire is the first end 9 of the elastic resistance wire, and the last end of the last tension spring-style resistance wire is the second end 10 of the elastic resistance wire.

[0041] Specifically, the emergency response device 7 includes at least one of an audible and visual alarm, a cabin pressure locking module, and a remote signal transmitter. The signal processing circuit 5 includes a counter and a signal comparator. The preset threshold is used as the reference value of the signal comparator, and the deviation is converted into a reference value of the signal comparator. When the deviation exceeds the preset threshold, the signal comparator outputs an abnormal signal and sends the abnormal signal to the emergency response device 7.

[0042] In some specific embodiments, when the signal processing circuit 5 detects plastic deformation triggering an early warning, the audible and visual alarm alerts the operator with a high-frequency buzzer (5Hz) and a red strobe light (3 times per second) to indicate equipment failure. The alarm is integrated into the top of the hatch and the control panel to ensure that the operator can detect it whether they are inside the cabin or in the monitoring room.

[0043] In some specific embodiments, when the signal processing circuit 5 detects a plastic deformation trigger warning, the cabin pressure locking module uses an electromagnetic valve linkage control system to automatically cut off the main electromagnetic valve of the pressurization pipeline (response time < 0.1 seconds) and force depressurization to atmospheric pressure.

[0044] In some specific embodiments, when the signal processing circuit 5 detects plastic deformation triggering an early warning, the remote signal transmitter pushes the alarm information (including cabin ID, anomaly type, anomaly time, and current pressure value) to the hospital's central control console and the mobile terminal (APP / SMS) of the management personnel in real time through 4G / Wi-Fi / satellite dual-mode communication. More specifically, the transmitter simultaneously sends location data and in-cabin camera footage to facilitate remote diagnosis. If no manual confirmation is received for 10 seconds, the preset emergency phone number is automatically called.

[0045] Another embodiment of this utility model provides a rigid hyperbaric oxygen chamber 1, which includes a chamber body and a safety warning device installed on the chamber body. The safety warning device is the safety warning device of the rigid hyperbaric oxygen chamber 1 described in any of the above embodiments. At least one wall of the chamber body is provided with an elastic resistance wire 2 of the safety warning device of the rigid hyperbaric oxygen chamber 1. In a specific application example, the chamber body has a planar wall, and the elastic resistance wire 2 of the safety warning device is installed on the planar wall. The overall outline of the elastic resistance wire 2 is preferably a ring wrapped around the body. When the chamber body is cylindrical or tank-shaped, the overall outline of the elastic resistance wire 2 is preferably a strip-shaped extension. In addition, in some other preferred embodiments, for greater safety, elastic resistance wires 2 are provided on the walls of at least two chamber bodies, preferably in areas with large deformation or high pressure. Two or more elastic resistance wires 2 extend along the surface of the chamber wall and are respectively connected to a resistance monitoring circuit 4, and a signal processing circuit 5 monitors each elastic resistance wire 2 separately.

[0046] In summary, this rigid hyperbaric oxygen chamber 1 and its safety warning device use an elastic resistance wire 2 fixed to the surface of the chamber, allowing the elastic resistance wire 2 to deform synchronously with the chamber. This converts the degree of material deformation of the chamber into a quantifiable change in resistance value. By combining the resistance monitoring circuit 4 and the signal processing circuit 5, the change in resistance value of the elastic resistance wire 2 before and after pressurization is compared to determine whether plastic deformation has occurred in the chamber. If plastic deformation occurs, the emergency response device 7 connected to the signal processing circuit 5 is immediately activated. This solves the problem in the field that rigid chambers are difficult to warn of plastic deformation in real time, making the rigid hyperbaric oxygen chamber 1 safer and more reliable. Moreover, the material properties of the elastic resistance wire 2 enable it to withstand pressure changes in the chamber for a long time, thus the safety warning device provides long-term monitoring, and the monitoring time can reach the limit of the chamber's lifespan.

[0047] It should be noted that this utility model is not limited to the above-described embodiments. Based on the inventive spirit of this utility model, those skilled in the art can make other changes, and these changes made based on the inventive spirit of this utility model should be included within the scope of protection claimed by this utility model.

Claims

1. A safety warning device for a hard hyperbaric oxygen chamber, which is triggered when the chamber body of the hard hyperbaric oxygen chamber plastically deforms, characterized in that, include: Elastic resistance wires are laid on the surface of the rigid hyperbaric oxygen chamber. Pressure sensors are used to monitor the pressure inside the chamber in real time and identify the atmospheric pressure state and pressurized state of the rigid hyperbaric oxygen chamber. A resistance monitoring circuit, connected to the elastic resistance wire, is used to detect and collect in real time the initial resistance value of the elastic resistance wire under normal pressure in the rigid hyperbaric oxygen chamber, the deformation resistance value under pressurization, and the resistance recovery data after returning to normal pressure. The signal processing circuit, connected to the pressure sensor and the resistance monitoring circuit, is used to compare the deviation between the initial resistance value and the resistance recovery data. When the deviation exceeds a preset threshold, it is determined that the cabin material has undergone plastic deformation, and the pressure feedback signal from the pressure sensor is received. An emergency response device, connected to the signal processing circuit, is used to receive monitoring result signals or control signals from the signal processing circuit to perform corresponding early warning operations.

2. The safety warning device for a hard-wall hyperbaric oxygen chamber according to claim 1, wherein The elastic resistance wire has a tension spring structure. The overall outline of the tension spring structure is a flat, thin sheet-like tension spring. The lower surface of the entire tension spring along its length is in close contact with the surface of the rigid hyperbaric oxygen chamber, so that the deformation of the chamber surface can cause the deformation of the elastic resistance wire.

3. The safety warning device for a hard-wall hyperbaric oxygen chamber according to claim 1, wherein The elastic resistance wire extends in an S-shape or Z-shape along the direction of the principal stress of the rigid hyperbaric oxygen chamber.

4. The safety warning device for a hard-wall hyperbaric oxygen chamber according to claim 1, wherein The elastic resistance wire is disposed in the stress concentration area of ​​the rigid hyperbaric oxygen chamber.

5. The safety warning device for a hard-wall hyperbaric oxygen chamber according to claim 1, wherein The resistance monitoring circuit includes a Wheatstone bridge.

6. The safety warning device for a hard-wall hyperbaric oxygen chamber according to claim 1, wherein The safety warning device also includes a memory for storing the initial resistance value, the deformation resistance value, and the resistance recovery data, and is connected to the signal processing circuit.

7. The safety warning device for a hard-wall hyperbaric oxygen chamber according to claim 1, wherein The elastic resistance wire is arranged in a winding and tortuous manner around the stress concentration center of the cabin body. The overall extension direction of the elastic resistance wire is circular, and the center of the circle is the stress concentration center of the cabin body.

8. The safety warning device for a hard-wall hyperbaric oxygen chamber according to claim 1, wherein An insulating layer is provided between the elastic resistance wire and the surface of the cabin. The elastic resistance wire is a spring-shaped structure formed by engraving or etching metal foil. The metal foil and the insulating layer are integrally formed. The insulating layer is fixed to the surface of the cabin.

9. The safety warning device for a hard-wall hyperbaric oxygen chamber according to claim 1, wherein The emergency response equipment includes at least one of an audible and visual alarm, a cabin pressure locking module, and a remote signal transmitter. The signal processing circuit includes a counter and a signal comparator. The preset threshold is used as the reference value of the signal comparator, and the deviation is converted into a reference value of the signal comparator. When the deviation exceeds the preset threshold, the signal comparator outputs an abnormal signal and sends the abnormal signal to the emergency response equipment.

10. A hard hyperbaric oxygen chamber comprising a chamber body and a safety warning device installed on the chamber body, characterized in that, The safety warning device is the safety warning device for a rigid hyperbaric oxygen chamber as described in any one of claims 1 to 9, wherein at least one chamber wall of the chamber is provided with the elastic resistance wire of the safety warning device for the rigid hyperbaric oxygen chamber.

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