A hand-held fire extinguisher test release device for marine use

Abstract

The application discloses a kind of offshore portable fire extinguisher test release device, including box and setting movable cover on box, in box movable insert has sealing baffle, sealing baffle is divided into gas cylinder release chamber and visible liquid chamber by box;Weight indicating mechanism is provided in gas cylinder release chamber, and weight indicating mechanism includes movable base, fire extinguishing gas cylinder is placed on movable base, double-view position scale pointer is provided on movable base, and the pointer of double-view position scale pointer is worn out on the scale slot of the side wall of box;The fire extinguishing gas cylinder is also connected with gas release mechanism.The application can realize that the medium in the bottle is released in organized manner under visible and controllable conditions, to achieve the purpose of safety and environmental protection.

Description

Technical Field

[0001] This invention relates to the field of offshore oil and gas extraction equipment and marine engineering, and particularly to a test and release device for a portable fire extinguisher at sea. Background Technology

[0002] Offshore platforms periodically generate handheld fire extinguishers (dry powder / carbon dioxide) that need to be disposed of. Currently, the common practice is to directly and unorganizedly release the medium from the extinguishers. This method poses certain safety hazards and environmental risks, mainly in the following aspects: 1) High risk of mechanical injury and significant harm to personnel health When the mechanical structure of a fire extinguisher is severely corroded, the release handle of the cylinder valve can easily detach suddenly, causing the uncontrolled release of high-pressure gas and dry powder inside the cylinder. This release can generate a reaction force, potentially causing mechanical injury to the operator. Simultaneously, inhaling dry powder particles can cause respiratory damage; direct release from a carbon dioxide fire extinguisher can lead to localized oxygen deficiency and asphyxiation, or frostbite to the hands and torso.

[0003] 2) Air pollution and marine environmental pollution If the dry powder is released directly into the atmosphere, it will cause dust pollution and affect air quality. If released near the ship's side, the dry powder may drift onto the sea surface, and its chemical components may impact the marine ecosystem.

[0004] 3) Low operational efficiency, causing shipping delays. Operations require waiting for suitable wind direction (downwind) and weather conditions, and the "bagging" process is cumbersome, with each fire extinguisher taking a long time to release. If release is not timely, it will affect the container loading and return to port plan; the backlog of scrapped fire extinguishers will also occupy platform storage space and increase safety management pressure. Summary of the Invention

[0005] To address the aforementioned technical problems, this invention provides a test and release device for portable fire extinguishers used at sea. This invention enables the organized release of pressurized media from expired fire extinguisher cylinders under visible and controllable conditions, achieving both safety and environmental friendliness.

[0006] The present invention is achieved by the following technical solution.

[0007] A test and release device for a portable fire extinguisher at sea includes a housing and a movable cover plate mounted on the housing. A sealing partition is movably inserted into the housing, dividing the housing into a gas cylinder release chamber and a visible liquid chamber. A weight indication mechanism is provided in the gas cylinder release chamber. The weight indication mechanism includes a movable base on which the fire extinguishing gas cylinder is placed. A dual-position scale pointer is provided on the movable base, with the pointer of the dual-position scale pointer extending through a scale groove on the side wall of the housing. The fire extinguishing gas cylinder is also connected to the gas release mechanism.

[0008] Furthermore, transparent, sealed viewing windows are provided on three sides of the enclosure on one side of the visible liquid chamber.

[0009] Furthermore, a movable base limiting plate is provided on the lower part of the three inner walls of the box on one side of the gas cylinder release chamber; the movable base is provided with movable grooves on three sides, and the movable base limiting plate is placed in the movable grooves.

[0010] Furthermore, a load-bearing spring assembly is provided below the movable base, the load-bearing spring assembly including a central main load-bearing spring and auxiliary balance springs located around it.

[0011] Furthermore, the fire extinguishing gas cylinder is equipped with a counterweight assembly, which includes a ring frame, bearing screws around the ring frame, and a counterweight block hanging at the lower part of the bearing screws.

[0012] Furthermore, the gas release mechanism includes an upper handle beam with an upper handle connected above it; upper handle ring posts are inserted through both ends of the upper handle beam; handle groove limiting pressure beams are provided on the two upper handle ring posts; handle groove limiting pressure beam pull-down posts are inserted through the handle groove limiting pressure beams; steel cables are connected to the lower ends of the handle groove limiting pressure beam pull-down posts; the steel cables pass through fixed pulleys located on the movable base and are connected to the lower ends of the upper handle ring posts.

[0013] Furthermore, the movable cover plate is provided with an external guide wheel assembly, which includes a support frame. A fixed pulley is provided in the center of the support frame, and a release cable passes through the fixed pulley and the lifting handle of the gas release mechanism.

[0014] Furthermore, the outlet end of the fire extinguishing gas cylinder is connected to one end of a U-shaped connecting pipe that passes through the sealing partition, and the other end of the U-shaped connecting pipe is submerged at the bottom of the box.

[0015] Furthermore, a venting mechanism is provided at the bottom of the tank, which includes a pressure regulating valve and a liquid jet pump.

[0016] Furthermore, the outer periphery of the box is provided with support anchor bolts.

[0017] This application has the following beneficial effects: After being put into use, this invention enables remote control of the release of discarded fire extinguishers, preventing sudden release of media from pressure vessels that could cause injury. Furthermore, the release within a confined space eliminates the risk of uncontrolled emissions of dry powder or carbon dioxide, maximizing environmental protection. The visualized enclosure allows for real-time monitoring of the release process, preventing secondary accidents caused by incomplete pressure release. This invention features an ingenious structural design, excellent performance, strong practicality, and broad application prospects. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is an exploded view of the housing of the present invention; Figure 3 This is a schematic diagram intended to illustrate the structure of the movable base of the present invention; Figure 4 This is a schematic diagram intended to illustrate the U-shaped connecting pipe structure of the present invention; Figure 5 This is a schematic diagram of the internal structure of the box body of the present invention; Figure 6 This is a schematic diagram of the counterweight assembly of the present invention; Figure 7 This is a schematic diagram of the gas release mechanism of the present invention; Figure 8 This is an exploded view of the gas release mechanism of the present invention.

[0019] The components include: 1. Housing; 2. Movable cover; 3. Gas cylinder release chamber; 4. Visible liquid chamber; 5. Viewing window; 6. Sealing partition; 7. Sealing partition positioning groove; 8. Sealing partition sealing strip; 9. Drainage jet pump; 10. Pressure regulating valve; 11. Movable base limit plate; 12. Scale slot; 13. Movable base; 14. Central main load-bearing spring; 15. Auxiliary balance spring; 16. Spring clip; 17. Dual-view scale pointer; 8. Fire extinguishing gas cylinder; 19. Counterweight assembly; 191. Ring frame; 192. Bearing screw; 193. Counterweight block; 20. Gas release mechanism; 201. Lifting handle beam; 202. Lifting handle ring column; 203. Adjusting nut; 204. Handle groove limiting pressure beam pull-down column; 205. Handle groove limiting pressure beam; 21. Fixed pulley; 22. Steel cable; 23. External guide wheel assembly; 24. Release steel cable; 25. U-shaped connecting pipe. Detailed Implementation

[0020] The present patent application will be further described below with reference to the embodiments. Unless otherwise specified, the materials used in the preparation process in the following embodiments have not undergone further processing and have been commercially available.

[0021] like Figure 1-8As shown, a test and release device for a portable fire extinguisher at sea includes a housing 1, with a movable cover 2 on the upper part of the housing 1. The movable cover 2 is provided with a sealing strip, which is pressed down by its own weight to seal the housing 1.

[0022] The interior of the housing 1 is divided into two parts by a sealing partition 6, with one side being a visible liquid chamber 4 and the other side being a gas cylinder release chamber 3. Specifically, a sealing partition positioning groove 7 is formed in the middle of the housing 1, and replaceable sealing partition sealing strips 8 are provided around both sides of the sealing partition 6. The sealing partition 6 and the sealing partition sealing strips 8 are placed in the sealing partition positioning groove 7 to achieve the division and sealing of the housing chamber.

[0023] A transparent, sealed viewing window 5 is provided on three sides of the housing 1 on one side of the visible liquid chamber 4. A movable base limiting plate 11 is provided on the lower part of the inner wall of the three sides of the housing 1 on one side of the gas cylinder release chamber 3 to limit the movable base 13 to move vertically and uniformly within a specified range; a scale groove 12 is provided above the movable base limiting plate 11, and the scale groove 12 is located on the front and rear sides of the housing 1. The scale groove 12 is used to provide space for the pointer to move up and down, and a scale is provided at the scale groove 12.

[0024] A weight indicating mechanism is provided inside the gas cylinder release chamber 3. The weight indicating mechanism includes a movable base 13, on which movable grooves are provided on three sides. Movable base limiting plates 11 are slidably disposed in the movable grooves. A load-bearing spring assembly is provided below the movable base 13, which consists of a central main load-bearing spring 14 and four peripheral auxiliary balance springs 15. Spring clips 16 are provided on the central main load-bearing spring 14 and the auxiliary balance springs 15, and the spring clips 16 are used to adjust the number of spring compression turns.

[0025] Dual-view scale pointers 17 are fixed on both the front and rear sides of the movable base 13. Each dual-view scale pointer 17 includes a vertical screw. One end of the vertical screw is connected to the movable base 13 via a nut, and the other end is fitted into the pointer, secured with a nut, and placed within the scale groove 12. The fire extinguishing gas cylinder 18 is placed on the movable base 13. When the dry powder or carbon dioxide in the cylinder is released, the cylinder becomes lighter, causing the dual-view scale pointers 17 to move upwards. The dual-view scale pointers 17 can also indicate how much of the remaining medium in the fire extinguishing gas cylinder 18 has not been released.

[0026] A gas release mechanism 20 is also provided on one side of the gas cylinder release chamber 3. The gas release mechanism 20 includes an upper handle beam 201, an upper handle is provided above the upper handle beam 201, and the upper handle beam 201 and the upper handle are positioned above the movable cover plate 2. Upper handle ring posts 202 are fixedly inserted through both ends of the upper handle beam 201. The upper handle ring posts 202 pass through the movable cover plate 2, and their lower parts are placed inside the gas cylinder release chamber 3. Handle groove limiting pressure beams 205 are movably inserted through the two upper handle ring posts 202 located in the gas cylinder release chamber 3. The lower ends of the upper handle ring posts 202 are connected to the adjusting nuts 203 by threads. Handle groove limiting pressure beam pull-down posts 204 are also inserted through both ends of the handle groove limiting pressure beams 205. The lower ends of the handle groove limiting pressure beam pull-down posts 204 are connected to steel cables 22. The steel cables 22 pass through the fixed pulleys 21 located on the movable base 13 and are connected to the lower ends of the upper handle ring posts 202.

[0027] This application provides an external guide wheel assembly 23 on the movable cover plate 2. The external guide wheel assembly 23 includes a support frame, which is fixed to the movable cover plate 2. A fixed pulley is located in the center of the support frame. A release cable 24 passes through the fixed pulley and the lifting handle of the gas release mechanism 20. The release cable 24 works in conjunction with the external guide wheel assembly 23 to generate an upward pulling force on the lifting handle, thereby driving the lifting handle ring column 202 upward. The cable 22 at the lower end of the lifting handle ring column 202 passes through the fixed pulley 21. The cable 22 generates a downward pulling force on the handle groove limiting pressure beam pull column 204, thereby pressing down the handle groove limiting pressure beam 205 and opening the bottle head valve.

[0028] The fire extinguishing gas cylinder 18 is also provided with a counterweight assembly 19; the counterweight assembly 19 includes a ring frame 191, a central through hole is formed in the center of the ring frame 191 for the upper part of the fire extinguishing gas cylinder 18 to pass through, a bearing screw 192 is provided around the central through hole, and a counterweight block 193 is hung on the lower part of the bearing screw 192.

[0029] The outlet end of the fire extinguishing gas cylinder 18 is connected to a U-shaped connecting pipe 25. Specifically, one end of the U-shaped connecting pipe 25 passes through the sealing partition 6 and is connected to the outlet pipe of the gas cylinder. A rubber sealing ring is used to seal the U-shaped connecting pipe 25 and the sealing partition 6. The other end of the U-shaped connecting pipe 25 is submerged at the bottom of the box.

[0030] This application provides a venting mechanism at the bottom of the housing 1. The venting mechanism includes a pressure regulating valve 10, which monitors the pressure inside the visible liquid chamber 4 to ensure that the pressure inside the chamber is maintained between a slight positive pressure and 0.1~0.5 kPa. When the pressure in the visible liquid chamber 4 exceeds the limit, the pressure regulating valve 10 is opened to vent the pressure. When the pressure is restored, the valve is closed.

[0031] The venting mechanism also includes a liquid jet pump 9. After the gas is released, the jet pump is started to pump the sewage into the designated collection tank.

[0032] This application provides support anchor bolts on the outer periphery of the housing 1 to fix the housing 1 and has a certain height difference to facilitate the installation of the U-shaped liquid inlet pipe of the liquid jet pump 9.

[0033] The implementation process of this invention is as follows: First, based on the actual weight and size of the bottle, and taking into account the weight of the gas inside the bottle and the weight of the counterweight assembly 19, adjust the number of spring coils on the movable base 13. Second, align the movable slot of the movable base 13 with the movable base limit plate 11 and lower it to the bottom of the box 1, and install the dual-view scale pointer 17 and adjust it to the appropriate position. Third, place the fire extinguishing gas cylinder 18 to be released into the positioning groove of the base (the groove formed in the center of the movable base 13), and put the counterweight assembly 19 into it so that the total weight of the cylinder is greater than the lifting force on the handle. Fourth, insert the sealing partition 6 into the sealing partition positioning groove 7 and seal it with a sealing rubber strip. At the same time, install the U-shaped connecting pipe 25 and the partition through sealing ring and connect it to the bottle nozzle. Fifth, pass the upper handle ring column 202 with the upper handle beam 201 through the movable cover plate 2, then pass the handle groove limiting pressure beam 205 through the upper handle ring column 202, and tighten the adjusting nut 203 to the appropriate position. Connect one end of the steel cable 22 to the lower end of the upper handle ring column 202, and pass the other end through the fixed pulley 21 and finally connect it to the lower end of the handle groove limiting pressure beam pull-down column 204. Then place the movable cover plate 2 in place. Sixth, supply water to the tank to the specified level through the pressure regulating valve 10 at the bottom of the tank, and fix the tank to the deck surface; Seventh, pass the release cable 24 through the external guide wheel assembly 23 and connect it to the lifting handle; Eighth, at a certain distance from the housing 1, drag the release cable 24, press down the handle groove limit beam 205, and open the cylinder valve to release the gas inside the cylinder (during the gas release process, the release cable 24 can be loosened, at which time the pointer 17 of the dual-view scale will move to indicate the remaining gas volume in the fire extinguishing gas cylinder 18). Ninth, after no more gas is released and the liquid in the visible liquid chamber 4 is found to be turbid through the glass window 5, connect the bottom drain jet pump 9 to drain the liquid in the tank to the designated waste liquid collection tank. The operation is then complete.

[0034] The embodiments described herein are preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. Therefore, all equivalent changes made in accordance with the structure, shape, and principle of the present invention should be covered within the scope of protection of the present invention.

Claims

1. A test and release device for a portable fire extinguisher at sea, comprising a housing (1) and a movable cover (2) disposed on the housing (1), characterized in that: A sealing partition (6) is movably inserted inside the housing (1), dividing the housing (1) into a gas cylinder release chamber (3) and a visible liquid chamber (4); a weight indicator mechanism is provided in the gas cylinder release chamber (3), the weight indicator mechanism includes a movable base (13), the fire extinguishing gas cylinder (18) is placed on the movable base (13), and a dual-view scale pointer (17) is provided on the movable base (13), the pointer of the dual-view scale pointer (17) passes through the scale groove (12) on the side wall of the housing (1); the fire extinguishing gas cylinder (18) is also connected to the gas release mechanism (20).

2. The test and release device for a portable fire extinguisher at sea according to claim 1, characterized in that: Transparent and sealed viewing windows (5) are provided on three sides of the box (1) on one side of the visible liquid chamber (4).

3. The test and release device for a portable fire extinguisher at sea according to claim 1, characterized in that: A movable base limiting plate (11) is provided on the lower part of the three inner walls of the box (1) on one side of the gas cylinder release chamber (3); the movable base (13) is provided with movable grooves on its three sides, and the movable base limiting plate (11) is placed in the movable groove.

4. The test and release device for a portable fire extinguisher at sea according to claim 1, characterized in that: The movable base (13) is provided with a load-bearing spring assembly below it, which includes a central main load-bearing spring (14) and auxiliary balance springs (15) located around it.

5. A test and release device for a portable fire extinguisher at sea according to claim 1, characterized in that: The fire extinguishing gas cylinder (18) is provided with a counterweight assembly (19), which includes a ring frame (191), a bearing screw (192) around the ring frame (191), and a counterweight block (193) hanging on the lower part of the bearing screw (192).

6. A test and release device for a portable fire extinguisher at sea according to claim 1, characterized in that: The gas release mechanism includes an upper handle beam (201) with an upper handle connected above it; upper handle ring posts (202) are inserted through both ends of the upper handle beam (201); handle groove limiting pressure beams (205) are provided on the two upper handle ring posts (202); handle groove limiting pressure beam pull-down posts (204) are inserted through the handle groove limiting pressure beams (205); steel cable (22) is connected to the lower end of the handle groove limiting pressure beam pull-down posts (204); the steel cable (22) passes through the fixed pulley (21) located on the movable base (13) and is connected to the lower end of the upper handle ring posts (202).

7. A test and release device for a portable fire extinguisher at sea according to claim 6, characterized in that: The movable cover plate (2) is provided with an external guide wheel assembly (23), which includes a support frame. A fixed pulley is provided in the center of the support frame, and a release cable (24) passes through the fixed pulley and the lifting handle of the gas release mechanism (20).

8. A test and release device for a portable fire extinguisher at sea according to claim 1, characterized in that: The outlet end of the fire extinguishing gas cylinder (18) is connected to one end of a U-shaped connecting pipe (25) that passes through the sealing partition (6), and the other end of the U-shaped connecting pipe (25) is submerged at the bottom of the box.

9. A test and release device for a portable fire extinguisher at sea according to claim 1, characterized in that: A venting mechanism is provided at the bottom of the housing (1), which includes a pressure regulating valve (10) and a liquid jet pump (9).

10. A test and release device for a portable fire extinguisher at sea according to claim 1, characterized in that: The outer periphery of the box (1) is provided with anchor bolts.

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