Gas cylinder plug device capable of safely discharging and discharging sewage and assembly method

Abstract

The invention discloses a gas cylinder plug device capable of safely discharging and discharging sewage and an assembling method. The technical problems that in the prior art, a tail valve of a gas cylinder needs to be frequently disassembled and assembled for sewage discharging, so that plug threads are damaged, and sealing fails are solved. The gas cylinder plug device comprises a gas cylinder plug main body, a rupture disk block, a fusible alloy block, a drain outlet and a detachable plug. The assembly method comprises the following steps: firstly, preparing each component of the gas cylinder plug; then the rupture disk block, the fusible alloy block and the detachable choke plug are assembled on the gas cylinder choke plug main body; and finally, carrying out an airtight test on the assembled gas cylinder plug until the gas cylinder plug is qualified in the airtight test. According to the gas cylinder plug, the drain outlet is formed in the gas cylinder plug body, the detachable choke plug is detachably connected into the drain outlet, when a gas cylinder needs to be subjected to pollution discharge, the detachable choke plug is screwed off from the drain outlet, the sealing piece is taken out, pollution discharge operation can be conducted, after pollution discharge is finished, the detachable choke plug is assembled, an airtight test is conducted, and the gas cylinder can be put into use after being qualified. The tail valve does not need to be disassembled frequently, and the service life of the tail valve can be effectively prolonged.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of gas cylinder structure, and particularly relates to a gas cylinder plug device with safety relief and pollution discharge function and an assembling method. BACKGROUND

[0002] The conventional gas cylinder tail valve structure has a bursting disc block and a fusible alloy block arranged on the gas cylinder plug, and only has the safety relief function, but does not have the quick detachable pollution discharge function. When the pollution discharge is needed, the tail valve has to be detached as a whole for the pollution discharge, and the frequent disassembly and assembly of the tail valve can cause the damage of the thread, thereby causing the sealing failure. SUMMARY

[0003] The application aims to solve the technical problem that the conventional gas cylinder tail valve structure has the safety relief function, but does not have the quick detachable pollution discharge function, and the frequent disassembly and assembly of the tail valve can cause the damage of the thread, thereby causing the sealing failure.

[0004] To achieve the above-mentioned purpose, the application adopts the following technical scheme: The application provides a gas cylinder plug device with safety relief and pollution discharge function, which comprises a gas cylinder plug body, a bursting disc block and a fusible alloy block.

[0005] Further, the detachable plug head comprises a rod part and a head part, the rod part is provided with an external thread, the inner wall of the pollution discharge port is provided with an internal thread matched with the external thread of the rod part, and the rod part is threadedly connected to the pollution discharge port.

[0006] Further, the inner wall of the pollution discharge port is provided with a step, the step is provided with a sealing sheet, and the end of the rod part tightly abuts against the sealing sheet.

[0007] Further, the bursting disc block is provided with a rubber gasket for the air sealing function.

[0008] The application further provides an assembling method of the gas cylinder plug device with safety relief and pollution discharge function, which comprises the following steps. Step 1, preparing the components of the gas cylinder plug; Step 2, assembling the bursting disc block, the fusible alloy block and the detachable plug head to the gas cylinder plug body; Step 3, performing the air tightness test on the assembled gas cylinder plug, and the gas cylinder plug is qualified if the air tightness test is qualified.

[0009] Further, in the step 1, after the components of the gas cylinder plug are prepared, the gas cylinder plug body, the bursting disc block, the fusible alloy block and the detachable plug head are cleaned and dusted to prevent the dust and sundries on the components from affecting the air tightness.

[0010] Further, in the step two, the fusible alloy block and the bursting disc block are assembled to the cylinder plug main body respectively, and then the detachable blind head is assembled to the cylinder plug main body.

[0011] Further, in the step of assembling the detachable blind head, the sealing sheet is placed on the step in the blowdown port, and then the detachable blind head is slowly screwed in the blowdown port.

[0012] Compared with the prior art, the present application has the following beneficial effects: The present application has the following beneficial effects: The present application has the following beneficial effects: BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 The present application has the following beneficial effects:

[0014] Figure 2 The present application has the following beneficial effects:

[0015] Figure 3 The present application has the following beneficial effects:

[0016] Figure 4 The present application has the following beneficial effects:

[0017] Figure 5 The present application has the following beneficial effects:

[0018] Figure 6 The present application has the following beneficial effects:

[0019] Figure 7 The present application has the following beneficial effects:

[0020] Figure 8 The present application has the following beneficial effects:

[0021] Figure 9 The present application has the following beneficial effects:

[0022] Wherein, the name corresponding to the reference sign is: 1-cylinder plug main body, 2-blowdown port, 3-bursting disc block, 4-fusible alloy block, 5-detachable blind head, 6-sealing sheet, 21-step, 31-rubber gasket, 51-shaft, 52-head. DETAILED DESCRIPTION

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings. Obviously, the described embodiments are merely some embodiments of this invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0024] Example 1.

[0025] like Figures 1-9 As shown, the present invention provides a safe and sludge-discharging gas cylinder plug device, including a gas cylinder plug body 1, a rupture disc block 3 and a fusible alloy block 4. The gas cylinder plug body 1 is provided with a drain port 2 for sludge discharge, and a detachable plug 5 for sealing the drain port 2 is detachably connected inside the drain port 2.

[0026] This invention features a simple structure, a scientifically sound design, and ease of use. The main body of the gas cylinder plug has a drain port for discharging wastewater. A detachable end cap for sealing the drain port is detachably connected inside. To drain the gas cylinder, simply unscrew the detachable end cap from the drain port and remove the sealing plate. After draining, reassemble the sealing plate and detachable end cap at the drain port and conduct an airtightness test. If the test is successful, the gas cylinder can be put into use. This method of draining the gas cylinder eliminates the need for frequent disassembly and reassembly of the tail valve, effectively extending its service life.

[0027] Example 2.

[0028] like Figures 1-9 As shown, the present invention provides a safe and sludge-discharging gas cylinder plug device, including a gas cylinder plug body 1, a rupture disc block 3 and a fusible alloy block 4. The gas cylinder plug body 1 is provided with a drain port 2 for sludge discharge, and a detachable plug 5 for sealing the drain port 2 is detachably connected inside the drain port 2.

[0029] The detachable plug 5 includes a rod 51 and a head 52. The rod 51 is provided with an external thread, and the inner wall of the drain port 2 is provided with an internal thread that matches the external thread of the rod. The rod 51 is threadedly connected to the drain port 2.

[0030] Based on Example 1, this embodiment 2 provides a more preferred connection structure between the detachable plug 5 and the drain outlet 2. Specifically, the detachable plug 5 includes a rod 51 and a head 52. The rod 51 is provided with external threads, and the inner wall of the drain outlet 2 is provided with internal threads that are compatible with the external threads of the rod. The rod 51 is threadedly connected to the drain outlet 2. The threaded connection is simple, reliable, easy to manufacture, and has stable performance.

[0031] Example 3.

[0032] likeFigures 1-9 As shown, the present invention provides a safe and sludge-discharging gas cylinder plug device, including a gas cylinder plug body 1, a rupture disc block 3 and a fusible alloy block 4. The gas cylinder plug body 1 is provided with a drain port 2 for sludge discharge, and a detachable plug 5 for sealing the drain port 2 is detachably connected inside the drain port 2.

[0033] The detachable plug 5 includes a rod 51 and a head 52. The rod 51 is provided with an external thread, and the inner wall of the drain port 2 is provided with an internal thread that matches the external thread of the rod. The rod 51 is threadedly connected to the drain port 2.

[0034] The inner wall of the drain outlet 2 is provided with a step 21, and a sealing plate 6 is installed on the step 21. The end of the rod 51 is tightly pressed against the sealing plate 6.

[0035] Based on Example 2, this embodiment 3 provides a more preferred connection structure between the detachable plug 5 and the drain outlet 2. Specifically, a step 21 is provided on the inner wall of the drain outlet 2, and a sealing plate 6 is installed on the step 21. The end of the rod 51 is tightly abutted against the sealing plate 6. The detachable plug 5 tightly mounts the sealing plate 6 onto the step 21, resulting in a simple structure and reliable sealing performance.

[0036] Example 4.

[0037] like Figures 1-9 As shown, the present invention provides a safe and sludge-discharging gas cylinder plug device, including a gas cylinder plug body 1, a rupture disc block 3 and a fusible alloy block 4. The gas cylinder plug body 1 is provided with a drain port 2 for sludge discharge, and a detachable plug 5 for sealing the drain port 2 is detachably connected inside the drain port 2.

[0038] The rupture disc 3 is fitted with a rubber gasket 31 for gas sealing.

[0039] Based on Example 1, Example 4 provides a more preferred connection structure between the rupture disc block 3 and the gas cylinder plug body 1. Specifically, the rupture disc block 3 is fitted with a rubber gasket 31 for gas sealing, which has a simple structure and reliable sealing performance.

[0040] Example 5.

[0041] like Figures 1-9 As shown, a method for assembling a gas cylinder plug device that allows for safe venting and wastewater discharge includes the following steps: Step 1: Prepare all parts of the gas cylinder plug; Step 2: Assemble the rupture disc, fusible alloy block, and detachable plug onto the main body of the gas cylinder plug; Step 3: Conduct an airtightness test on the assembled gas cylinder plug. If the airtightness test is passed, the gas cylinder plug is ready.

[0042] In the step one, after each component of the cylinder plug is prepared, the cylinder plug body, the bursting disc block, the fusible alloy block and the detachable plug are cleaned and dusted to prevent dust and sundries on the components from affecting the air tightness.

[0043] In the step two, the fusible alloy block and the bursting disc block are assembled to the cylinder plug body respectively, and then the detachable plug is assembled to the cylinder plug body.

[0044] In the assembly of the detachable plug, the sealing sheet is first placed on the step in the blowdown port, and then the detachable plug is slowly screwed in the blowdown port.

[0045] The method is simple and convenient for factory standardized and large-scale production operation.

[0046] The main structural components of the application include: a cylinder plug body with a blowdown port, a fusible alloy block, a bursting disc block, a detachable plug, a sealing sheet and a rubber gasket. The fusible alloy block is composed of fusible alloy added into a safety bolt, and the bursting disc block is composed of a safety membrane and a safety bolt. The fusible alloy block and the bursting disc block are both existing product structures, and their connection, sealing and other structural principles with the cylinder plug body are not described here.

[0047] The installation and forming process of the cylinder plug device of the application is as follows: the fusible alloy block and the bursting disc block are first assembled into the plug body; finally, the blowdown plug is installed; after the overall assembly is completed, the air tightness test is performed, and the product can be shipped and used only after the air tightness test is passed.

[0048] The application is designed with a blowdown port at the cylinder plug to prevent the accumulation of oil stains in the cylinder and block the valve channel, and a detachable plug is detachably assembled at the blowdown port. This design can perform blowdown operation on the cylinder without disassembling the plug as a whole, which can effectively avoid the technical problem of sealing failure caused by damage to the plug threads due to frequent disassembly and assembly of the plug for blowdown.

[0049] In the case of fire emergency at the bottom of the cylinder, the safety relief device integrated on the plug will be quickly started to safely release the high-pressure gas in the cylinder, which can effectively enhance the safety of the cylinder in use.

[0050] Finally, it should be noted that: the above embodiments are only the preferred embodiments of the application for describing the technical solutions of the application, but not limiting them, and of course, they are not limiting the patent scope of the application. Any modification or polishing without substantial significance made on the basis of the main design idea and spirit of the application, which still solves the same technical problems as the application, should be included in the protection scope of the application; in addition, the technical solutions of the application are directly or indirectly applied to other related technical fields, which are also included in the patent protection scope of the application.

Claims

1. A safety relief and ventable cylinder closure device comprising a cylinder closure body (1), a burst disc piece (3) and a fusible alloy piece (4), characterized in that, A drain port (2) for draining is formed in the cylinder head main body (1), and a detachable plug (5) for sealing the drain port (2) is detachably connected in the drain port (2).

2. A pressure relief and drainable cylinder valve assembly according to claim 1, wherein, The detachable plug (5) comprises a stem (51) and a head (52), the stem (51) is provided with external threads, the inner wall of the drain port (2) is provided with internal threads matched with the external threads of the stem, and the stem (51) is screwed into the drain port (2).

3. A pressure relief and drainable cylinder closure device according to claim 2, characterised in that, A step (21) is formed on the inner wall of the drain port (2), a sealing sheet (6) is arranged on the step (21), and the end of the stem (51) tightly abuts against the sealing sheet (6).

4. A pressure relief and drainable cylinder valve assembly according to claim 1, wherein: A rubber gasket (31) for air sealing is sleeved on the bursting disc block (3).

5. The assembling method of the safety relief and ventable cylinder cap device according to any one of claims 1-4, characterized in that, The method comprises the following steps: Step one, prepare the components of the cylinder head; Step two, assemble the bursting disc block, the fusible alloy block and the detachable plug on the cylinder head main body; Step three, perform air tightness test on the assembled cylinder head, and the cylinder head is qualified if the air tightness test is passed.

6. The method of assembling according to claim 5, wherein, In the step one, after the components of the cylinder head are prepared, the cylinder head main body, the bursting disc block, the fusible alloy block and the detachable plug are cleaned and dusted to prevent dust and sundries on the components from affecting the air tightness.

7. The method of assembling according to claim 5, wherein, In the step two, the fusible alloy block and the bursting disc block are assembled on the cylinder head main body first, and then the detachable plug is assembled on the cylinder head main body.

8. The method of assembling according to claim 7, wherein, When assembling the detachable plug, the sealing sheet is placed on the step in the drain port first, and then the detachable plug is slowly screwed in the drain port.

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