High and medium pressure integrated long-distance air supply device for fire fighting

Abstract

The utility model discloses a high and medium pressure integrated long-distance gas supply device for fire fighting, which comprises a gas source input interface, a long-distance gas transmission conduit, a wire coil, an input gas pressure gauge, a handle, a support frame, a medium pressure gas supply output interface group and a high pressure gas supply output interface group, wherein the high-pressure air supply output set comprises an air path valve and an inflation connector for an air bottle of the positive-pressure air respirator, and the medium-pressure air supply output set comprises an air path valve, a pressure reducing valve, an output air pressure gauge and two positive-pressure air respirator mask connecting air pipe quick-insertion connectors. In fire-fighting operations of high-rise, large-span space, long tunnels and the like, the fire-fighting device is easy to carry and operate, and can provide stable and continuous air for firefighters for a long distance for a long time to assist the firefighters in smoothly completing rescue tasks.

Description

Technical Field

[0001] This utility model relates to the field of fire-fighting equipment technology, specifically a high- and medium-pressure integrated long-distance gas supply device for fire fighting. Background Technology

[0002] In firefighting operations in high-rise buildings, large-span spaces, and long tunnels, long-lasting respiratory protection is a crucial prerequisite for ensuring the safety of rescue personnel. Currently, the self-contained breathing apparatus (SCBA) used in domestic and international rescue operations mainly includes positive-pressure air respirators, positive-pressure oxygen respirators, and long-tube respirators. The following problems exist in their use:

[0003] Positive pressure air respirators are supplied with high-pressure gas from a compressed cylinder, offering only short-term protection. Once the high-pressure gas in the cylinder is depleted, rescuers must evacuate to a safe area to replace the cylinder, a cumbersome process. Positive pressure oxygen respirators supply compressed oxygen along with exhaled air, but oxygen is a combustion oxidizer, and leaks can be dangerous. Long-tube respirators have a medium-pressure tubing connected to a breathing supply valve, directly delivering depressurized medium-pressure gas to the mask. However, the tubing is heavy and its length is limited due to considerations of mask comfort and the practicality of dragging the tubing. Furthermore, the gas source must be moved along with the cylinder assembly, making it inconvenient to carry.

[0004] Chinese Patent No. CN 220459776 U discloses a long-distance air supply device, including a support assembly. The support assembly has a rotatably connected winding pipe assembly at its center. One side of the support assembly has a detachably connected first connecting pipe assembly, and the other side has a rotatably connected drive handle. One side of the winding pipe assembly has a fixedly connected first air guide assembly. One end of the first air guide assembly is threadedly connected to a second air guide assembly. Several second air guide assemblies are detachably connected. One end of a second air guide assembly, away from the first air guide assembly, has a threadedly connected second connecting pipe assembly. Through the use of the first connecting pipe, the device can be connected to two or more air respirators, allowing external air supply personnel to replenish the air volume of personnel inside the unit by changing their air respirators, effectively extending the air supply time.

[0005] However, the gas supply device provided by the above solution has a complex structure and cumbersome operation steps. It cannot provide gas to the respirator in a timely manner during rescue and can only deliver gas at a constant pressure. It is not suitable for various respirators at the rescue site.

[0006] Therefore, how to provide firefighters with stable and continuous high-pressure or medium-pressure air over long distances and for extended periods to improve rescue efficiency has become an urgent problem to be solved in this field. Utility Model Content

[0007] In view of the shortcomings of the prior art, the purpose of this utility model is to provide a high- and medium-pressure integrated long-distance air supply device for fire fighting, which solves the problems mentioned in the background art of existing self-contained breathing apparatus, such as short protection time (positive pressure air respirator), inability to place the air source in the rear (positive pressure oxygen respirator), inconvenience in carrying and moving, and limited length settings (long tube respirator). It can provide high-pressure or medium-pressure air, is suitable for various respirators, and has the advantages of integrated air source that can be placed in the rear, long protection time, and convenient carrying. It can provide stable and continuous air for firefighters over long distances and for long periods of time.

[0008] To achieve the above objectives, the present invention provides a fire-fighting integrated high- and medium-pressure long-distance air supply device, used in conjunction with a positive-pressure breathing apparatus, comprising:

[0009] A gas input interface that can be connected to a high-pressure gas source.

[0010] A coil integrating an input gas pressure gauge, a medium-pressure gas supply output group valve, a high-pressure gas supply output group valve, a medium-pressure gas supply output group interface, and a high-pressure gas supply output group interface.

[0011] One end connects to the gas source input interface, and the other end connects to the medium-pressure gas supply output group and the high-pressure gas supply output group on the coil. It can also be stored in the long-distance gas transmission pipe on the coil.

[0012] Furthermore, a handle is provided above the reel, and a support frame is provided below.

[0013] Furthermore, the gas supply valves of the medium-pressure gas supply output group and the high-pressure gas supply output group are equipped with high-pressure safety devices.

[0014] Furthermore, the high-pressure air supply output group's air supply interface is matched with the air cylinder interface for positive pressure air respirators.

[0015] Furthermore, the medium-pressure gas supply output group is equipped with an output gas pressure gauge and two quick-connect gas output interfaces on the gas supply interface.

[0016] Furthermore, the two quick-connect gas output ports in the medium-pressure gas supply output group are compatible with the air tube interface connected to the mask of the positive pressure air respirator.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. The high-pressure air source is connected to the respirator through a long-distance air supply tube that can be stored on the reel, so that the air source for the respirator can be placed at the rear. The long-distance air supply tube can be released from the reel and extended to provide air to the respirator over a long distance and for a long time. It does not need to be moved with the respirator, making it easy to carry and providing long protection time. Therefore, the high-pressure integrated long-distance air supply device for fire protection provided by this utility model integrates the advantages of rear-placed air source, long protection time and easy to carry.

[0019] 2. One end of the long-distance air supply conduit is connected to a high-pressure air source, and the other end is connected to the medium-pressure air supply output group and the high-pressure air supply output group on the coil. It can provide stable high- and medium-pressure air sources for the breathing apparatus. The high-pressure air supply output group can be used to fill the air cylinder of the positive-pressure air breathing apparatus, and the medium-pressure air supply output group can be directly connected to the mask of the positive-pressure air breathing apparatus. Therefore, the integrated high- and medium-pressure long-distance air supply device for fire fighting provided by this utility model can provide high-pressure and medium-pressure air sources for the breathing apparatus and is suitable for various rescue environments. Attached Figure Description

[0020] Figure 1 A schematic diagram of the overall structure of the integrated high- and medium-pressure long-distance air supply device for fire protection provided by this utility model;

[0021] Figure 2 A side view schematic diagram of the integrated high- and medium-pressure long-distance air supply device for fire protection provided by this utility model;

[0022] Figure 3 and Figure 4 A cross-sectional schematic diagram of the integrated high- and medium-pressure long-distance air supply device for fire protection provided by this utility model;

[0023] Figure 5 This is a schematic diagram of the gas supply interface structure of the medium-pressure gas supply output group of this utility model;

[0024] In the diagram: 1. Gas source input interface; 2. Long-distance gas transmission duct; 21. First branch pipe; 22. Second branch pipe; 3. High-pressure gas supply output group gas supply interface; 4. High-pressure gas supply output group gas supply valve; 5. Input gas pressure gauge; 6. Coil; 61. Clamping plate; 611. Pipe hole; 612. Gas chamber; 62. Crossbar; 621. Connecting hole; 7. Handle; 8. Medium-pressure gas supply output group gas supply valve; 9. Medium-pressure gas supply output group gas supply interface; 91. Output gas pressure gauge; 92. Gas output quick-connect interface; 10. Support frame. Detailed Implementation

[0025] Please see Figure 1 , Figure 2 The illustration shows an example of a high- and medium-pressure integrated long-distance gas supply device for fire protection provided by this utility model.

[0026] As shown in the figure, the fire-fighting integrated high- and medium-pressure long-distance gas supply device of this example includes: a gas source input interface 1 that can be stably connected to a high-pressure gas source; a coil 6 that integrates an input gas pressure gauge 5, a medium-pressure gas supply output group gas valve 8, a high-pressure gas supply output group gas valve 4, a medium-pressure gas supply output group gas interface 9, and a high-pressure gas supply output group gas interface 3; and a long-distance gas transmission guide that can be housed on the coil 6, with one end connected to the gas source input interface 1 and the other end connected to the medium-pressure gas supply output group gas interface 9 and the high-pressure gas supply output group gas interface 3. Pipe 2 allows the high-pressure gas source to deliver gas to the medium-pressure gas supply output group supply interface 9 and the high-pressure gas supply output group supply interface 3 via the long-distance gas delivery conduit 2. The medium-pressure gas supply output group supply interface 9 and the high-pressure gas supply output group supply interface 3 can be connected to the respirator to provide high-pressure and medium-pressure gas to the respirator respectively. Thus, the gas can be stored or released on the coil 6 via the long-distance gas delivery conduit 2 to supply gas to the respirator over a long distance and for a long time, so that the high-pressure gas source does not need to move with the respirator. This achieves the rear placement of the high-pressure gas source, which is convenient to carry and provides long protection time.

[0027] Combination Figure 2 and Figure 3 Furthermore, the coil 6 has clamps 61 at both ends and a crossbar 62 in the middle connecting the clamps 61 at both ends, so that the long-distance gas transmission duct 2 can be wound up on the crossbar 62 for easy storage and can also be released from the crossbar 62 to extend.

[0028] In order to enable the long-distance gas transmission duct 2 to stably deliver the high-pressure gas source to the medium-pressure gas supply output group gas supply interface 9 and the high-pressure gas supply output group gas supply interface 3 on the coil 6, the crossbar 62 and the clamping plate 61 are formed with cavities that can accommodate the long-distance gas transmission duct 2. One end of the long-distance gas transmission duct 2 is connected to the high-pressure gas source through the gas source input interface 1, and the other end passes through the connection hole 621 on the crossbar 62, is set inside the crossbar 62 and is connected to the medium-pressure gas supply output group gas supply interface 9 and the high-pressure gas supply output group gas supply interface 3 set on the clamping plate 61.

[0029] In some embodiments, the crossbar 62 and the clamping plate 61 are directly connected internally. The long-distance gas transmission conduit 2 branches into a first branch pipe 21 and a second branch pipe 22 inside the crossbar 62, so that the first branch pipe 21 and the second branch pipe 22 are respectively connected to the gas supply interface 9 of the medium-pressure gas supply output group and the gas supply interface 3 of the high-pressure gas supply output group. Thus, the long-distance gas transmission conduit 2 is configured as a three-way pipe to deliver gas from the high-pressure gas source to the gas supply interface 9 of the medium-pressure gas supply output group and the gas supply interface 3 of the high-pressure gas supply output group, respectively. Figure 3 As shown.

[0030] In some embodiments, the crossbar 62 and the clamping plate 61 are connected through a pipe hole 611, forming an air cavity 612 inside the clamping plate 61. A long-distance gas delivery conduit 2 is connected to the air cavity 612 through the pipe hole 611, delivering gas from the high-pressure gas source to the air cavity 612. This allows the gas in the air cavity 612 to enter the medium-pressure gas supply output group supply port 9 and the high-pressure gas supply output group supply port 3, respectively. Figure 4 As shown.

[0031] Combination Figure 1 To ensure the stability and safety of the gas output from the medium-pressure gas supply output group's gas supply interface 9 and the high-pressure gas supply output group's gas supply interface 3, a gas pressure gauge 5 is installed on the coil 6. The gas pressure gauge 5 is configured to detect the pressure value of the gas output from the high-pressure gas source. The medium-pressure gas supply output group's gas supply interface 9 and the high-pressure gas supply output group's gas supply interface 3 are respectively equipped with a medium-pressure gas supply valve 8 and a high-pressure gas supply valve 4. By adjusting the opening degree of the medium-pressure gas supply valve 8 and the high-pressure gas supply valve 4, the flow rate and pressure of the gas output from the medium-pressure gas supply output group's gas supply interface 9 and the high-pressure gas supply output group's gas supply interface 3 can be controlled, thereby stabilizing the gas delivered to the respirator.

[0032] Here, the gas supply valve 8 of the medium-pressure gas supply output group can be composed of a pressure reducing valve to reduce the gas output from the high-pressure gas source to medium-pressure gas, so that the gas supply interface 9 of the medium-pressure gas supply output group can output medium-pressure gas, thereby enabling the gas supply interface 9 of the medium-pressure gas supply output group and the gas supply interface 3 of the high-pressure gas supply output group to output medium-pressure gas and high-pressure gas respectively.

[0033] Furthermore, both the medium-pressure gas supply output valve 8 and the high-pressure gas supply output valve 4 are equipped with high-pressure safety devices. These high-pressure safety devices can be composed of pressure relief protection devices. When the internal pressure of this gas supply device exceeds the safety value detected by the input gas pressure gauge 5, the high-pressure safety device can open the medium-pressure gas supply output valve 8 and the high-pressure gas supply output valve 4 to release the excessive pressure, preventing the gas supply device from going out of control, exploding, or other dangerous situations, thereby ensuring the safety of the gas delivered to the respirator.

[0034] Furthermore, the medium-pressure gas supply output group valve 8 and the high-pressure gas supply output group valve 4 are configured with low opening torque, so that operators can more easily open and close the medium-pressure gas supply output group valve 8 and the high-pressure gas supply output group valve 4, reducing physical exertion during operation. At the same time, operators can respond more quickly, adjust the valve opening in a timely manner, and control the gas flow and pressure, thereby better ensuring the stability of the gas in the respirator.

[0035] For example, a high-torque motor or actuator can be installed on the gas supply valve 8 of the medium-pressure gas supply output group and the gas supply valve 4 of the high-pressure gas supply output group to provide sufficient driving power so that the valve can be opened smoothly and the opening torque can be reduced.

[0036] As an example, the gas supply valve 8 of the medium-pressure gas supply output group and the gas supply valve 4 of the high-pressure gas supply output group can also be equipped with a double-layer sealing structure to improve the sealing reliability of the valves, reduce the additional opening torque caused by poor sealing, and thus reduce the opening torque.

[0037] Therefore, the gas supply valve 8 of the medium-pressure gas supply output group and the gas supply valve 4 of the high-pressure gas supply output group can reliably regulate the gas flow and pressure of the high-pressure gas source delivered to the gas supply interface 9 of the medium-pressure gas supply output group and the gas supply interface 3 of the high-pressure gas supply output group through the long-distance gas transmission pipe 2, respectively.

[0038] In order for the medium-pressure air supply output group air supply interface 9 and the high-pressure air supply output group air supply interface 3 to supply gas to the respirator respectively, the high-pressure air supply output group air supply interface 3 is matched with the gas cylinder interface for the positive pressure air respirator. The gas cylinder interface for the positive pressure air respirator can be connected to the high-pressure air supply output group air supply interface 3 so that the high-pressure air supply output group air supply interface 3 can provide high-pressure gas for filling the gas cylinder for the positive pressure air respirator.

[0039] Further, see Figure 5 The medium-pressure gas supply output group gas supply interface 9 includes an output gas pressure gauge 91 for detecting the output gas pressure and two gas output quick-connect interfaces 92. The gas output quick-connect interfaces 92 are matched with the air tube interface connected to the mask of the positive pressure air respirator. The air tube interface connected to the mask of the positive pressure air respirator can be directly inserted into the gas output quick-connect interfaces 92, so that the medium-pressure gas supply output group gas supply interface 9 delivers medium-pressure gas to the mask of the positive pressure air respirator through the gas output quick-connect interfaces 92.

[0040] Furthermore, there is a handle 7 above the reel 6 for easy lifting, and a support frame 10 below the reel 6 for stable support, so that the long-distance gas transmission pipe 2 can be released from the reel 6 by holding the handle 7, the long-distance gas transmission pipe 2 can be laid gradually, and the gas supply device can be stably placed on site by the support frame 10.

[0041] The following example illustrates the working process of this utility model in a specific application. It should be noted that the content described here is only a specific application example of this solution and does not constitute a limitation on this solution.

[0042] When in use, connect the gas source input interface 1 to a high-pressure gas source at a distance. Depending on the site conditions, lift the handle 7 and gradually release the long-distance gas transmission pipe 2 from the reel 6. Lay the long-distance gas transmission pipe 2 and at the same time find a stable place to place the support frame 10 to keep the gas supply device stable.

[0043] Observe the input gas pressure gauge 5 on the coil 6 to determine whether the gas source pressure is stable or abnormal. Use a high-pressure or medium-pressure gas source according to the operation requirements.

[0044] If using a high-pressure air source, first connect the air cylinder of the positive pressure air respirator to the air supply interface 3 of the high-pressure air supply output group. After confirming that the connection is reliable, open the air supply valve 4 of the high-pressure air supply output group to fill the air cylinder.

[0045] If using a medium-pressure air source, first open the medium-pressure air supply output group's air supply valve 8, observe the output gas pressure gauge 91 in the medium-pressure air supply output group's air supply interface 9, and determine whether the air source pressure is stable and whether there are any abnormalities. If there are no abnormalities, quickly insert the quick-connect fitting of the positive pressure air respirator mask's connecting tube into the gas output quick-connect interface 92 to provide air to the mask.

[0046] When firefighters move around on site, they only need to continuously release the long-distance gas supply tube 2 from the coil 6 so that the length of the long-distance gas supply tube 2 is adapted to the gas delivery distance. There is no need to move the high-pressure gas source, which makes the breathing apparatus easy to carry and can supply gas to firefighters for a long time and a long distance.

[0047] The integrated high- and medium-pressure long-distance air supply device for fire fighting provided by this utility model adopts a combination of high-pressure air source, long-distance air delivery duct 2 and coil 6 to achieve portability of the breathing apparatus. It integrates the advantages of rear-mounted air source and long protection time, and can provide firefighters with stable and continuous air over long distances and for long periods of time.

[0048] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high intermediate pressure integrated long distance air supply device for fire fighting, for use in cooperation with a cylinder and a mask of a positive pressure air breathing apparatus, characterized in that, The utility model relates to a kind of long-distance gas supply device, including: Gas source input interface (1) capable of being connected with high-pressure gas source, Integrated input gas pressure gauge (5), medium-pressure gas supply output group gas supply valve (8), high-pressure gas supply output group gas supply valve (4), medium-pressure gas supply output group gas supply interface (9) and high-pressure gas supply output group gas supply interface (3) of wire coil (6), One end is connected with gas source input interface (1), the other end is connected with medium-pressure gas supply output group gas supply interface (9) and high-pressure gas supply output group gas supply interface (3) on wire coil (6), and can be stored in long-distance gas supply conduit (2) on wire coil (6).

2. The high-medium pressure integrated long distance gas supply device for fire fighting according to claim 1, characterized in that, Handle (7) is equipped above wire coil (6), and support frame (10) is equipped below.

3. The high-medium pressure integrated long distance gas supply device for fire fighting according to claim 1, characterized in that, High-pressure safety device is equipped on medium-pressure gas supply output group gas supply valve (8) and high-pressure gas supply output group gas supply valve (4).

4. The high-medium pressure integrated long distance gas supply device for fire fighting according to claim 1, characterized in that, High-pressure gas supply output group gas supply interface (3) is matched with air cylinder interface for positive pressure air respirator.

5. The high and medium pressure integrated long distance air supply device for fire fighting according to claim 1, characterized in that, Output gas pressure gauge (91) and two gas output quick plug interfaces (92) are equipped on medium-pressure gas supply output group gas supply interface (9).

6. The high-medium pressure integrated long distance air supply device for fire fighting according to claim 5, characterized in that, Two gas output quick plug interfaces (92) in medium-pressure gas supply output group gas supply interface (9) are matched with air pipe interface connected with the face guard of positive pressure air respirator.

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