Inflatable high-efficiency sealing structure and its preparation process

Abstract

The present invention relates to an inflatable high-efficiency sealing structure and a preparation process thereof. The annular surface of the sealing rubber belt (3) of the annular structure is concave downward to form an annular groove for accommodating an airbag (4), so the airbag (4) includes a rubber inner tube (4.1) of a cylindrical structure. Connecting flanges (4.2) are installed on the two open ends of the rubber inner tube (4.1). The two ends of the rubber inner tube (4.1) are connected by connecting flanges (4.2) to form an annular structure. The connecting flange (4.2) is provided with a step inflation hole (4.3) along its radial direction. The large-diameter end of the step inflation hole (4.3) faces inward, and the small-diameter end of the step inflation hole (4.3) faces outward; and a one-way valve (4.4) is embedded in the large-diameter end of the step inflation hole (4.3). The present invention relates to an inflatable high-efficiency sealing structure and a preparation process thereof. The inflatable structure is used to replace conventional sponge filling, thereby avoiding the problem of oil and gas erosion.

Description

Technical Field

[0001] The present invention relates to an oil and gas sealing structure, and in particular to an inflatable high-efficiency sealing structure applied to a gas cabinet and a preparation process thereof. Background Art

[0002] At present, the conventional gas holder sealing structure is to fill the rubber outer skin with sponge or other fillers. However, in actual application, it is found that due to the presence of seams in the rubber outer skin of the ring structure, no matter how it is handled, after long-term use, oil and gas will inevitably penetrate through the seams and react with the sponge or other fillers filled inside, thereby affecting the sealing effect. For this reason, there is an urgent need for a sealing structure that uses an inflatable method to form a sealing filling effect to solve the above problem. Summary of the Invention

[0003] The purpose of the present invention is to overcome the above-mentioned shortcomings and provide an inflatable high-efficiency sealing structure and a preparation process thereof, which adopts an inflatable structure to replace conventional sponge filling, thereby avoiding the problem of oil and gas erosion.

[0004] The object of the present invention is achieved like this:

[0005] An inflatable, efficient sealing structure includes a sealing rubber belt located between the inner wall of a cabinet and the outer wall of a floating plate. The sealing rubber belt is an annular structure. The annular surface of the sealing rubber belt of the annular structure is recessed downward to form an annular groove for accommodating an airbag. The top of the groove wall of the annular groove of the sealing rubber belt is fixedly mounted on the outer wall of the floating plate.

[0006] Therefore, the airbag includes a rubber inner tube with a cylindrical structure, and connecting flanges are installed on the two open ends of the rubber inner tube. The two ends of the rubber inner tube are connected by the connecting flanges to form an annular structure. The connecting flange is provided with a step inflation hole along its radial direction, and the large-diameter end of the step inflation hole faces inward, and the small-diameter end of the step inflation hole faces outward; and a one-way valve is embedded in the large-diameter end of the step inflation hole.

[0007] The present invention provides an inflatable high-efficiency sealing structure, wherein a pressure sensor is embedded in the small-diameter end of the step inflation hole.

[0008] A preparation process of an inflatable high-efficiency sealing structure, characterized in that the process steps are:

[0009] Step 1: Airbag preparation:

[0010] Step 1.1: After the rubber sheet is dragged under the hot pressing roller, wrap the rubber sheet around the hot pressing roller;

[0011] Step 1.2: Put the two connecting flanges onto the hot pressing roller from both ends, and press the two ends of the rubber sheet onto the flanges of the connecting flanges. Then tighten the rubber sheet so that it fits tightly on the hot pressing roller.

[0012] Step 1.3: Under the action of the oil cylinder, the upper arc-shaped pressing plate and the lower arc-shaped pressing plate respectively press the rubber sheet downward and upward onto the hot pressing roller, and the upper arc-shaped pressing plate and the lower arc-shaped pressing plate are aligned to form a complete cylindrical structure, and both ends of the arc-shaped surface of the upper arc-shaped pressing plate and the lower arc-shaped pressing plate are provided with arc-shaped grooves for the flange of the connecting flange to be embedded;

[0013] Step 1.4: The heat-conducting steam in the pipes in the hot pressing roller and the thermocouples in the upper and lower arc pressing plates are heated for two hours so that the connecting flange and the rubber plate are hot-pressed and vulcanized to form a whole;

[0014] Step 1.5: Trimming: Open the upper and lower arc-shaped pressing plates, cut off the residual material at the seam of the rubber inner tube formed after the rubber sheet is wound, and then rotate the rubber inner tube 90 degrees;

[0015] Step 1.6: Close the upper and lower arc-shaped pressing plates and continue heating for half an hour to vulcanize the seams of the rubber inner tube again.

[0016] Step 1.7: After opening the upper and lower arc-shaped pressure plates, pull out the rubber inner tube with the connecting flange. Then, drill holes axially on the connecting flange to form connecting bolt holes, and drill holes radially on the connecting flange to form stepped inflation holes. A one-way valve is embedded in the large end of the inner stepped inflation hole.

[0017] Step 1.8: Align the connecting flanges at both ends of the rubber inner tube to form a complete airbag.

[0018] Step 2: The annular surface of the sealing rubber belt of the annular structure is bent into a U-shaped groove and then inserted into the annular space between the inner wall of the cabinet and the outer wall of the floating plate;

[0019] Step 3: After the airbag prepared in step 1 is placed in the U-shaped groove, it is inflated through the step inflation hole, so that the airbag expands and drives the two sides of the sealing rubber belt to adhere to the inner wall of the cabinet and the outer wall of the floating plate respectively; then, the pressure sensor is inserted into the small-diameter end of the step inflation hole;

[0020] Step 4: The two side groove walls of the U-shaped groove of the annular sealing rubber belt are fixed to the top of the outer wall of the floating plate;

[0021] The present invention provides a preparation process for an inflatable high-efficiency sealing structure, in which a welding sealing process is performed between the top of a pressure sensor and the edge of a step inflation hole. Thus, once the rubber inner tube of the airbag leaks, the gas in the step inflation hole will be introduced into the rubber inner tube. At this time, the pressure sensor will send a detected air pressure reduction signal to a terminal server to remind maintenance.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] The present invention uses an inflatable structure to replace the conventional filling structure, thereby avoiding the erosion of the filler by oil and gas and ensuring the sealing effect. At the same time, the conventional inflatable structure makes the overall structure simpler and more convenient to assemble. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a structural schematic diagram of an inflatable high-efficiency sealing structure of the present invention.

[0025] Figure 2 This is a schematic structural diagram of an airbag with an inflatable, efficient sealing structure according to the present invention.

[0026] Figure 3 This is a partial side view of the preparation state of an inflatable high-efficiency sealing structure of the present invention.

[0027] Figure 4 This is a partial front cross-sectional view of an inflatable high-efficiency sealing structure of the present invention in a prepared state.

[0028] in:

[0029] Cabinet body 1, floating plate 2, sealing rubber belt 3, air bag 4;

[0030] Rubber inner tube 4.1, connecting flange 4.2, step inflation hole 4.3, one-way valve 4.4, pressure sensor 4.5;

[0031] Hot pressing roller 101 , upper arc-shaped pressing plate 102 , lower arc-shaped pressing plate 103 , end cover 104 , and rubber plate 105 . DETAILED DESCRIPTION

[0032] See also Figures 1 to 4 The present invention relates to an inflatable high-efficiency sealing structure, which includes a sealing rubber belt 3 located between the inner wall of a cabinet 1 and the outer wall of a floating plate 2. The sealing rubber belt 3 is an annular structure. The annular surface of the sealing rubber belt 3 of the annular structure is recessed downward to form an annular groove for accommodating an airbag 4, and the top of the groove wall of the annular groove of the sealing rubber belt 3 is fixedly mounted on the outer wall of the floating plate 2.

[0033] Therefore, the airbag 4 includes a rubber inner tube 4.1 with a cylindrical structure. Connecting flanges 4.2 are installed on the two open ends of the rubber inner tube 4.1. The two ends of the rubber inner tube 4.1 are connected by the connecting flanges 4.2 to form an annular structure. The connecting flange 4.2 is provided with a stepped inflation hole 4.3 along its radial direction. The large-diameter end of the stepped inflation hole 4.3 faces inward, and the small-diameter end of the stepped inflation hole 4.3 faces outward; and a one-way valve 4.4 is embedded in the large-diameter end of the stepped inflation hole 4.3.

[0034] Furthermore, a pressure sensor 4.5 is embedded in the small-diameter end of the step inflation hole 4.3.

[0035] A preparation process of an inflatable high-efficiency sealing structure, the process steps are:

[0036] Step 1: Airbag preparation:

[0037] Step 1.1: After the rubber sheet 105 is dragged under the hot pressing roller 101, the rubber sheet 105 is wrapped around the hot pressing roller 101;

[0038] Step 1.2: Attach the two connecting flanges 4.2 to the hot pressing roller 101 from both ends, and press the two ends of the rubber sheet 105 onto the flanges of the connecting flanges 4.2. Then, tighten the rubber sheet 105 so that it fits tightly against the hot pressing roller 101.

[0039] Step 1.3: Under the action of the oil cylinder, the upper arc-shaped pressing plate 102 and the lower arc-shaped pressing plate 103 respectively press the rubber sheet 105 downward and upward onto the hot pressing roller 101. The upper arc-shaped pressing plate 102 and the lower arc-shaped pressing plate 103 are aligned to form a complete cylindrical structure. Both ends of the arc-shaped surface of the upper arc-shaped pressing plate 102 and the lower arc-shaped pressing plate 103 are provided with arc-shaped grooves for the flange of the connecting flange 4.2 to be inserted.

[0040] Step 1.4: The heat-conducting steam in the pipes of the hot pressing roller 101 and the thermocouples in the upper arc pressing plate 102 and the lower arc pressing plate 103 are heated for two hours so that the connecting flange 4.2 and the rubber plate 105 are hot-pressed and vulcanized to form a whole;

[0041] Step 1.5: Trimming: Open the upper arc-shaped pressing plate 102 and the lower arc-shaped pressing plate 103, cut away the residual material at the seam of the rubber inner tube 4.1 formed after the rubber sheet 105 is wound, and then rotate the rubber inner tube 4.1 90 degrees;

[0042] Step 1.6: Close the upper arc-shaped pressing plate 102 and the lower arc-shaped pressing plate 103 and continue heating for half an hour to re-vulcanize the seam of the rubber inner tube 4.1;

[0043] Step 1.7: After opening the upper and lower arc-shaped pressure plates 102 and 103, pull out the rubber inner tube 4.1 with the connecting flange 4.2. Then, axially punch holes in the connecting flange 4.2 to form connecting bolt holes, and radially punch holes in the connecting flange 4.2 to form stepped inflation holes 4.3. A one-way valve 4.4 is embedded in the large end of the inner stepped inflation hole 4.3.

[0044] Step 1.8: The connecting flanges 4.2 at both ends of the rubber inner tube 4.1 are aligned to form a complete air bag 4;

[0045] Step 2: The annular sealing rubber belt 3 is bent into a U-shaped groove and inserted into the annular space between the inner wall of the cabinet 1 and the outer wall of the floating plate 2;

[0046] Step 3: After the airbag 4 prepared in step 1 is placed in the U-shaped groove, it is inflated through the stepped inflation hole 4.3, causing the airbag 4 to expand and drive the two sides of the sealing rubber belt 3 to adhere to the inner wall of the cabinet 1 and the outer wall of the floating plate 2 respectively; then, the pressure sensor 4.5 is inserted into the small-diameter end of the stepped inflation hole 4.3;

[0047] Step 4: The two side walls of the U-shaped groove of the annular sealing rubber belt 3 are fixed to the top of the outer wall of the floating plate 2;

[0048] Furthermore, welding and sealing treatment is performed between the top of the pressure sensor 4.5 and the edge of the step inflation hole 4.3, so that once the rubber inner tube 4.1 of the airbag 4 leaks, the gas in the step inflation hole 4.3 will be introduced into the rubber inner tube 4.1. At this time, the pressure sensor 4.5 will send the detected air pressure reduction signal to the terminal server to remind maintenance.

[0049] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A preparation process of an inflatable high-efficiency sealing structure, characterized in that: The process steps are: Step 1: Preparation of airbag: Step 1.1, after the rubber sheet (105) is dragged under the hot pressing roller (101), the rubber sheet (105) is wrapped around the hot pressing roller (101); Step 1.2, the two connecting flanges (4.2) are respectively mounted on the hot pressing roller (101) from both ends thereof, and the two ends of the rubber sheet (105) are pressed onto the flanges of the flanges of the connecting flanges (4.2), and then the rubber sheet (105) is tightened so that it is tightly fitted onto the hot pressing roller (101); Step 1.3, the upper arc-shaped pressing plate (102) and the lower arc-shaped pressing plate (103) respectively press the rubber sheet (105) onto the hot pressing roller (101) downwardly and upwardly under the action of the oil cylinder, and the upper arc-shaped pressing plate (102) and the lower arc-shaped pressing plate (103) are matched to form a complete cylindrical structure, and arc-shaped grooves for the flange of the flange plate of the connecting flange (4.2) to be embedded are provided at both ends of the arc-shaped surfaces of the upper arc-shaped pressing plate (102) and the lower arc-shaped pressing plate (103); Step 1.4, the heat-conducting steam in the pipeline in the hot pressing roller (101) and the thermocouples in the upper arc pressing plate (102) and the lower arc pressing plate (103) are heated for two hours so that the connecting flange (4.2) and the rubber plate (105) are hot-pressed and vulcanized to form a whole; Step 1.5, trimming, opening the upper arc-shaped pressing plate (102) and the lower arc-shaped pressing plate (103), cutting off the residual material at the seam of the rubber inner tube (4.1) formed after the rubber sheet (105) is wound, and then rotating the rubber inner tube (4.1) by 90°; Step 1.6, close the upper arc-shaped pressing plate (102) and the lower arc-shaped pressing plate (103) and continue heating for half an hour so that the seam of the rubber inner tube (4.1) is vulcanized again; Step 1.7, after opening the upper arc-shaped pressing plate (102) and the lower arc-shaped pressing plate (103), pull out the rubber inner tube (4.1) with the connecting flange (4.2), then axially punch holes on the connecting flange (4.2) to form connecting bolt holes, radially punch holes on the connecting flange (4.2) to form step inflation holes (4.3), and embed a one-way valve (4.4) in the large end of the step inflation hole (4.3) located on the inner side; Step 1.8, the connecting flanges (4.2) at both ends of the rubber inner tube (4.1) are matched to form a complete air bag (4); Step 2, the annular surface of the sealing rubber belt (3) of the annular structure is bent into a U-shaped groove and then inserted into the annular space between the inner wall of the cabinet (1) and the outer wall of the floating plate (2); Step 3: After the airbag (4) obtained in step 1 is placed in the U-shaped groove, it is inflated through the step inflation hole (4.3), so that the airbag (4) expands and drives the two sides of the sealing rubber belt (3) to fit the inner wall of the cabinet (1) and the outer wall of the floating plate (2) respectively; then, the pressure sensor (4.5) is inserted into the small-diameter end of the step inflation hole (4.3); Step 4: The groove walls on both sides of the U-shaped groove of the annular sealing rubber belt (3) are fixed to the top of the outer wall of the outer wall of the floating plate (2).

2. A process for preparing an inflatable high-efficiency sealing structure as claimed in claim 1, characterized in that: A welding sealing process is performed between the top of the pressure sensor (4.5) and the edge of the step inflation hole (4.3), so that once the rubber inner tube (4.1) of the airbag (4) leaks, the gas in the step inflation hole (4.3) will be introduced into the rubber inner tube (4.1), and the pressure sensor (4.5) will send a detected pressure reduction signal to the terminal server to remind maintenance.

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