Quick and safe pressure relief device for hyperbaric oxygen chamber

Abstract

The utility model discloses a quick safety pressure relief device for a hyperbaric oxygen chamber, which relates to the technical field of hyperbaric oxygen chambers, and comprises a pressure relief pipe fixedly communicated with the top of a hyperbaric oxygen chamber body and a fixed plate fixedly connected with the outer wall of the circumference of the pressure relief pipe, a pressure sensor is mounted on the pressure relief pipe, an intelligent pressure relief valve is arranged at the top of the pressure relief pipe, and a pressure sensor is mounted on the fixed plate. A centering locking mechanism is arranged on the fixing plate, and the intelligent pressure release valve comprises a valve shell, a driving assembly, a rotating shaft and a sealing valve element welded to one end of the rotating shaft and matched with the valve shell. Through cooperation of the controller, the pressure sensor and the intelligent pressure relief valve, the opening degree of the sealing valve element can be accurately adjusted according to the pressure condition in the cabin so as to accurately adjust and control the pressure relief speed, and therefore the effect of rapid and safe pressure relief can be achieved, and the pressure relief effect is more ideal; and through the arrangement of the centering locking mechanism, disassembly and assembly are more convenient and faster, and therefore the disassembly and assembly efficiency of the pressure release valve can be effectively improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to high pressure oxygen cabin technical field especially relates to a quick safe pressure relief device for high pressure oxygen cabin. BACKGROUND

[0002] In the high pressure oxygen cabin treatment process, the cabin will be filled with high pressure gas to improve the concentration and pressure of oxygen, so as to promote the absorption and utilization of oxygen by human body. If the cabin pressure is too high, it may cause harm to the patient, such as causing eardrum rupture, lung injury, etc., so it is necessary to set a pressure relief valve in the high pressure oxygen cabin for pressure relief.

[0003] However, the existing pressure relief valve for high pressure oxygen cabin has the problems of inconvenient disassembly and disassembly, low disassembly efficiency, and low intelligent degree, so it cannot accurately adjust the opening of the sealing valve core according to the pressure in the cabin, so as to realize accurate control of the pressure relief speed and realize the effect of quick and safe pressure relief. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving the shortcomings in the prior art and provides a quick safe pressure relief device for high pressure oxygen cabin.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] A quick safe pressure relief device for high pressure oxygen cabin, comprising a pressure relief pipe fixedly communicated with the top of the high pressure oxygen cabin body and a fixed plate fixedly connected to the circumferential outer wall of the pressure relief pipe, a pressure sensor is installed on the pressure relief pipe, an intelligent pressure relief valve is arranged at the top of the pressure relief pipe, and a centering and locking mechanism is arranged on the fixed plate;

[0007] The intelligent pressure relief valve comprises a valve shell, a driving assembly, a rotating shaft penetratingly connected with the inner wall of the valve shell through a sealing bearing, and a sealing valve core welded to one end of the rotating shaft and matched with the valve shell.

[0008] The driving assembly comprises a fixed cover fixedly connected to the outer wall of the valve shell, a stepping motor fixedly installed on the rear outer wall of the fixed cover, a worm fixedly sleeved on the output shaft of the stepping motor, and a worm wheel fixedly sleeved on the rotating shaft, and a controller is fixedly installed on the front outer wall of the fixed cover.

[0009] Preferably, the top and bottom of the valve shell are both open structures, and the bottom opening of the valve shell is sealingly connected with the outer wall of the pressure relief pipe through a sealing ring.

[0010] Preferably, the output shaft of the stepping motor penetrates the rear edge of the fixed cover, and the worm and the worm wheel are located in the fixed cover and mesh with each other.

[0011] Preferably, a side wall of the fixed cover is fixedly provided with an alarm, and the alarm, the stepping motor and the pressure sensor are electrically connected with the controller.

[0012] Preferably, the centering and locking mechanism comprises a sliding groove formed in the top of the fixed plate, a bidirectional screw rod rotatably arranged in the sliding groove, two centering rods symmetrically screwed on two opposite threaded ends of the bidirectional screw rod, two C-shaped locking pieces symmetrically fixed on the outer walls of opposite sides of the two centering rods, and two positioning pins sequentially welded on the outer walls of adjacent sides of the two C-shaped locking pieces.

[0013] Preferably, the outer walls of the two centering rods are slidably connected with the inner wall of the sliding groove, and the outer wall of one end of the bidirectional screw rod is fixedly connected with a rotating cap.

[0014] Preferably, the outer wall of the circumferential lower part of the valve shell is symmetrically provided with two positioning grooves, and the two positioning pins extend into the two positioning grooves, respectively.

[0015] The utility model discloses a beneficial effect is:

[0016] 1. The utility model discloses a controller, pressure sensor and intelligent pressure relief valve's cooperation and cooperation can according to the pressure situation in the cabin, the opening of sealed valve core is accurately adjusted to realize the accurate control pressure relief speed, thereby can realize the effect of fast safe pressure relief, and the pressure relief effect is more ideal.

[0017] 2. The utility model discloses the setting of centering and locking mechanism, in the process of dismounting, can be completed without any tool, and dismounting is more convenient and fast, thereby can effectively improve the dismounting efficiency of pressure relief valve. ACCURACY

[0018] Figure 1 It is the three-dimensional structure schematic diagram of the utility model;

[0019] Figure 2 It is the three-dimensional structure schematic diagram of the utility model and the high-pressure oxygen cabin body connection;

[0020] Figure 3 It is the three-dimensional structure schematic diagram of the utility model in intelligent pressure relief valve and pressure relief pipe separation;

[0021] Figure 4 It is the three-dimensional structure schematic diagram of the utility model in centering and locking mechanism;

[0022] Figure 5 It is the three-dimensional enlarged structure schematic diagram of the utility model in fixed cover inside;

[0023] Figure 6 It is the bottom view three-dimensional enlarged structure schematic diagram of the utility model in valve shell;

[0024] Figure 7The utility model discloses a sealed valve core opening state's stereoscopic amplification structure schematic diagram.

[0025] In the figure: 1, high pressure oxygen cabin body; 2, pressure relief pipe; 3, fixed plate; 4, pressure sensor; 5, valve shell; 6, rotating shaft; 7, sealing valve core; 8, fixed cover; 9, stepping motor; 10, worm; 11, worm wheel; 12, controller; 13, alarm; 14, sealing ring; 15, two-way screw rod; 16, centering rod; 17, C type locking piece; 18, positioning pin; 19, rotating cap; 20, positioning groove. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0027] Embodiment 1, refer to Figures 1-3 And Figures 5-7 A kind of quick safe pressure relief device for high pressure oxygen cabin, including fixed communication in the top of high pressure oxygen cabin body 1 pressure relief pipe 2 and fixedly connected to the circumferential outer wall of pressure relief pipe 2 fixed plate 3;

[0028] In the embodiment, pressure sensor 4 is installed on pressure relief pipe 2, for real-time monitoring the pressure value in cabin, and the top of pressure relief pipe 2 is equipped with intelligent pressure relief valve;

[0029] Specifically, the intelligent pressure relief valve includes valve shell 5, drive assembly, rotating shaft 6 connected with the inner wall of valve shell 5 through sealing bearing and sealing valve core 7 welded to one end of rotating shaft 6 and matched with valve shell 5;

[0030] More specifically, the drive assembly includes fixed cover 8 fixedly connected to the outer wall of valve shell 5, stepping motor 9 fixedly installed on the rear outer wall of fixed cover 8, worm 10 fixedly sleeved on the output shaft of stepping motor 9 and worm wheel 11 fixedly sleeved on rotating shaft 6, and the output shaft of stepping motor 9 penetrates the rear edge of fixed cover 8, and worm 10 and worm wheel 11 are located in fixed cover 8 and mesh with each other;When using, worm 10 is rotated by stepping motor 9, and then worm wheel 11 meshing with worm 10 will drive sealing valve core 7 at one end of rotating shaft 6 to rotate, and then the opening degree of sealing valve core 7 is controlled to control the pressure relief speed;

[0031] Further, the front outer wall of fixed cover 8 is fixedly installed with controller 12, and the sidewall of fixed cover 8 is fixedly installed with alarm 13 for alarm processing under abnormal pressure condition, and alarm 13, stepping motor 9 and pressure sensor 4 are electrically connected with controller 12;

[0032] Further, the top and bottom of the valve shell 5 are open structures, and the bottom of the valve shell 5 is sealed and connected with the outer wall of the pressure relief pipe 2 through the sealing ring 14;

[0033] In the specific implementation of the embodiment: the pressure sensor 4 monitors the pressure value in the cabin in real time and converts the pressure signal into an electrical signal transmitted to the controller 12, the controller 12 receives the electrical signal transmitted from the pressure sensor 4, and makes a corresponding judgment according to the preset pressure threshold value, when the cabin pressure is higher than the upper limit of safety, the controller 12 sends an instruction to the intelligent regulating valve to make it intelligent, so that the opening of the sealing valve core 7 can be accurately adjusted according to the pressure in the cabin to realize accurate regulation and control of the pressure relief speed, and the effect of fast and safe pressure relief is realized.

[0034] Embodiment 2, refer to Figure 1 、 Figure 3 、 Figure 4 and Figure 6 , this embodiment is optimized on the basis of embodiment 1, specifically: the fixed plate 3 is provided with a centering and locking mechanism;

[0035] More specifically, the centering and locking mechanism includes a sliding groove opened on the top of the fixed plate 3, a bidirectional screw rod 15 rotatably installed in the sliding groove, two centering rods 16 symmetrically screwed on the two opposite threaded ends of the bidirectional screw rod 15, two C-shaped locking pieces 17 symmetrically fixed to the outer walls of the opposite sides of the two centering rods 16, and two positioning pins 18 sequentially welded to the outer walls of the adjacent sides of the two C-shaped locking pieces 17;

[0036] Further, the outer walls of the two centering rods 16 are slidably connected with the inner wall of the sliding groove, which can ensure the stability of the linear motion of the two centering rods 16, one end of the outer wall of the bidirectional screw rod 15 is fixedly connected with a rotating cap 19, which can facilitate manual control of the rotation of the bidirectional screw rod 15, and the circumferential lower outer wall of the valve shell 5 is symmetrically provided with two positioning grooves 20, and the two positioning pins 18 respectively extend into the two positioning grooves 20, and through the positioning cooperation of the two positioning grooves 20 and the positioning pins 18, the locking effect of the centering and locking mechanism can be further improved;

[0037] In the specific implementation of the embodiment: first, during installation, the valve shell 5 is pressed down to the top of the fixed plate 3, and in the process of pressing down, the sealing ring 14 in the valve shell 5 is sleeved to the pipe opening of the pressure relief pipe 2 to realize sealing, then the rotating cap 19 is used to control the forward rotation of the bidirectional screw rod 15, then under the limitation of the sliding groove, the two centering rods 16 threadedly connected with the bidirectional screw rod 15 drive the two C-shaped locking pieces 17 to be centered and close to each other to lock and fix the valve shell 5, and the two positioning pins 18 on the two C-shaped locking pieces 17 are also inserted into the corresponding two positioning grooves 20 to realize the effect of further locking;

[0038] Secondly in the process of disassembly, through the reverse rotation of the cap 19 two-way screw 15 so that the two C-shaped locking piece 17 away from each other to achieve the effect of contact locking, and two C-shaped locking piece 17 away from each other will drive two positioning pin 18 from two positioning groove 20 out, then can be pulled up valve shell 5 to complete the entire intelligent pressure relief valve disassembly.

[0039] The above merely the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this, any skilled in the technical field of the technical personnel in the technical range disclosed by the present application, according to the technical scheme of the present application and the utility model concept to equivalent replacement or change, should be covered within the scope of the protection of the present application.

Claims

1. A quick safe pressure relief device for a hyperbaric oxygen chamber, comprising a pressure relief pipe (2) fixedly communicated with the top of a hyperbaric oxygen chamber body (1) and a fixed plate (3) fixedly connected to the circumferential outer wall of the pressure relief pipe (2), characterized in that, The pressure sensor (4) is installed on the pressure relief pipe (2), the top of the pressure relief pipe (2) is provided with an intelligent pressure relief valve, and the fixing plate (3) is provided with a centering and locking mechanism. The intelligent pressure relief valve comprises a valve shell (5), a driving assembly, a rotating shaft (6) penetratingly connected with the inner wall of the valve shell (5) through a sealing bearing, and a sealing valve core (7) welded to one end of the rotating shaft (6) and matched with the valve shell (5). The driving assembly comprises a fixed cover (8) fixedly connected to the outer wall of the valve shell (5), a stepping motor (9) fixedly installed on the outer wall of the rear edge of the fixed cover (8), a worm (10) fixedly sleeved on the output shaft of the stepping motor (9), and a worm wheel (11) fixedly sleeved on the rotating shaft (6), and the front edge of the outer wall of the fixed cover (8) is fixedly installed with a controller (12).

2. A quick safety pressure relief device for a hyperbaric oxygen chamber according to claim 1, wherein, The top and bottom of the valve shell (5) are open structures, and the bottom opening of the valve shell (5) is sealingly connected with the outer wall of the pressure relief pipe (2) through a sealing ring (14).

3. A quick safety pressure relief device for a hyperbaric oxygen chamber according to claim 1, wherein The output shaft of the stepping motor (9) penetrates the rear edge of the fixed cover (8), and the worm (10) and the worm wheel (11) are located in the fixed cover (8) and are in meshing engagement.

4. The quick safety pressure relief device for hyperbaric oxygen chamber according to claim 1, wherein, The sidewall of the fixed cover (8) is fixedly installed with an alarm (13), and the alarm (13), the stepping motor (9) and the pressure sensor (4) are electrically connected with the controller (12).

5. A quick safety pressure relief device for a hyperbaric oxygen chamber according to claim 1, wherein The centering and locking mechanism comprises a sliding groove opened in the top of the fixing plate (3), a bidirectional screw (15) rotatably installed in the sliding groove, two centering rods (16) symmetrically screwed on two opposite threaded ends of the bidirectional screw (15), two C-shaped locking pieces (17) symmetrically fixed to the outer walls of the opposite edges of the two centering rods (16), and two positioning pins (18) sequentially welded to the outer walls of the adjacent edges of the two C-shaped locking pieces (17).

6. A quick safety pressure relief device for a hyperbaric oxygen chamber according to claim 5, wherein The outer walls of the two centering rods (16) are slidingly connected with the inner wall of the sliding groove, and one end of the outer wall of the bidirectional screw (15) is fixedly connected with a rotating cap (19).

7. A quick safety pressure relief device for hyperbaric oxygen chambers as claimed in claim 1, wherein, The circumferential lower outer wall of the valve shell (5) is symmetrically provided with two positioning grooves (20), and the two positioning pins (18) respectively extend into the two positioning grooves (20).

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