Sealing device of compensator

Abstract

The utility model relates to the technical field of pipelines, and discloses a sealing device of a compensator, which comprises a flange plate, a butt joint cylinder is fixedly arranged on the side wall of the flange plate, and a sealing assembly is arranged in the butt joint cylinder. According to the sealing device of the compensator, by arranging the sealing assembly, when flange plates are in butt joint installation, a bolt pushes an abutting rod to be matched with a disc and a push rod, so that a compressed air bag is extruded, inert gas in an expansion air bag can enter an annular air bag through a connecting pipe, and the size of the annular air bag is increased; by means of the arc-shaped limiting groove, the expansion air bag cannot excessively shift in the horizontal direction, meanwhile, the arc-shaped outer surface of the expansion air bag can increase the coverage area formed by unfolding, and therefore a gap in the connecting position between the butt joint cylinder and an external pipeline is effectively blocked, and the sealing effect between the whole compensator and the pipeline is guaranteed; and the anti-risk capability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to pipeline technical field, concretely is a sealing device of compensator. BACKGROUND

[0002] Compensator generally refers to expansion joint, expansion joint refers to the flexible element that can effectively play the role of compensating axial deformation, according to the sealing device of compensator (announcement number: CN221196527U) of one kind of public show, the above-mentioned application, through structure transmission can drive sealing rope, utilize the state of sealing rope around the corrugated pipe body and tighten sealing, avoid the clearance between corrugated pipe body and compensator mounting plate, enhance the sealing property.

[0003] But the above-mentioned equipment in actual use process, the connecting place between compensator and pipeline only relies on the locking of pull rope, brings certain operation intensity to the construction personnel of assembly, and the pull rope that is taut is more prone to corrosion and damage in the layout environment of pipeline, influence the docking installation stability of compensator, in view of this, we propose a sealing device of compensator. UTILITY MODEL CONTENT

[0004] The utility model is provided with a sealing device of compensator to solve the problems in the above background.

[0005] To achieve the above object, the utility model provides the following technical scheme: a sealing device of compensator, including flange plate, the side wall of flange plate is fixedly installed with docking barrel, the inside of docking barrel is provided with sealing assembly;

[0006] Among them, the sealing assembly includes movable cavity, the movable cavity is set up on the inner wall of flange plate, the inner wall of movable cavity is slidably installed with disc, the side wall between disc and the inner wall of movable cavity is fixedly connected with return spring, the outer wall on the side of disc away from return spring is fixedly installed with abutment rod, the outer wall on the side of disc close to return spring is fixedly installed with push rod, the end of push rod is fixedly installed with annular plate, the inner wall of docking barrel is provided with shrinkage cavity, the inner wall of shrinkage cavity is provided with compression air bag, the outer wall of compression air bag is fixedly connected with annular plate, the inner wall of docking barrel is fixedly installed with one-way electromagnetic valve, the inner wall on the end of docking barrel away from flange plate is provided with expansion cavity, the inside of expansion cavity is provided with expansion air bag, the arc outer wall of expansion air bag is fixedly connected with connecting pipe, the end of connecting pipe is fixedly connected with annular air bag, the arc outer wall of docking barrel is provided with limiting slot, the arc outer wall of annular air bag is provided with annular groove.

[0007] Preferably, the inner wall of flange plate and disc is provided with a circular hole, so as to facilitate the docking installation of flange plate and the pipeline to be docked through bolts.

[0008] Preferably, the number of the abutting rods is provided with multiple groups, and the multiple groups of the abutting rods are arranged outside the arc surface of the circular hole, so that when the bolt is installed, the end surface of the bolt will generate extrusion force on the abutting rod, thereby promoting the disc to move towards the inside of the movable cavity.

[0009] Preferably, the compression gas bag is connected with the inside of the expansion gas bag through a one-way electromagnetic valve, and the inside cavities of the compression gas bag and the expansion gas bag are filled with inert gas, so that the volume of the compression gas bag and the expansion gas bag will not change greatly due to the change of external temperature.

[0010] Preferably, the passage direction of the one-way electromagnetic valve is from the compression gas bag to the side of the expansion gas bag, so that when the compression gas bag is extruded, the inert gas in the compression gas bag enters the expansion gas bag through the one-way electromagnetic valve.

[0011] Preferably, the annular gas bag is arranged in the limiting groove, and the inner surface of the limiting groove is arranged in an arc shape, so that after the volume of the expansion gas bag is increased, the limiting groove arranged in an arc shape is used to prevent the expansion gas bag from deviating excessively in the horizontal direction.

[0012] Preferably, the number of the annular grooves is provided with multiple groups, and the multiple groups of the annular grooves are arranged on the arc outer surface of the annular gas bag away from the flange plate, so that when the annular gas bag is extruded and deformed, the contact part between the annular gas bag and the inner wall of the pipeline can be filled.

[0013] Compared with the prior art, the sealing device of the compensator has the following beneficial effects:

[0014] 1. The sealing device of the compensator is provided with a sealing assembly, and when the flange plate is butt-jointed and installed, the abutting rod is pushed by the bolt, the disc and the push rod are cooperated, the compression gas bag is extruded, the inert gas in the expansion gas bag enters the annular gas bag through the connecting pipe to increase the volume of the annular gas bag, the limiting groove arranged in an arc shape is used to prevent the expansion gas bag from deviating excessively in the horizontal direction, and the arc outer surface can also increase the coverage area formed by expansion, so that the joint gap between the butt-joint cylinder and the external pipeline can be effectively plugged, the sealing effect between the entire compensator and the pipeline is ensured, and the risk resistance of the device is improved.

[0015] 2. The sealing device of the compensator is provided with multiple groups of annular grooves on the arc outer surface of the annular gas bag away from the flange plate, so that when the annular gas bag is extruded and deformed, the contact part between the annular gas bag and the inner wall of the pipeline can be filled, the fitting effect of the annular gas bag can be ensured even if the inner wall of the pipeline has irregular notches, and the sealing performance and use effect of the entire device are improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the main body structure schematic view of the utility model;

[0017] Figure 2 It is the sectional structure schematic view of the utility model;

[0018] Figure 3 It is the sectional structure schematic view of the utility model;

[0019] Figure 4 It is the sealing assembly explosion schematic view of the utility model;

[0020] Figure 5 It is the annular airbag structure schematic view of the utility model.

[0021] In the figure: 1, flange plate; 2, butt joint barrel; 3, sealing assembly; 31, movable cavity; 32, disc; 33, reset spring; 34, abutment rod; 35, push rod; 36, annular plate; 37, contraction cavity; 38, compression airbag; 39, expansion cavity; 310, one-way electromagnetic valve; 311, expansion airbag; 312, connecting pipe; 313, annular airbag; 314, limit groove; 315, annular groove. DETAILED DESCRIPTION

[0022] As Figures 1-5 shown, the utility model provides a technical scheme: a kind of sealing device of compensator, including flange plate 1, and the butt joint barrel 2 of fixed installation is provided on the side wall of flange plate 1, and sealing assembly 3 is arranged in butt joint barrel 2, and sealing assembly 3 includes movable cavity 31, disc 32, reset spring 33, abutment rod 34, push rod 35, annular plate 36, contraction cavity 37, compression airbag 38, one-way electromagnetic valve 310, expansion cavity 39, expansion airbag 311, connecting pipe 312, annular airbag 313 and limit groove 314 and annular groove 315.

[0023] In an embodiment of the utility model, movable cavity 31 is set up on the inner wall of flange plate 1, movable cavity 31's inner wall is slidably installed with disc 32, and the side wall of disc 32 is fixedly connected with the inner wall of movable cavity 31 with return spring 33, the outer wall of the side of disc 32 away from return spring 33 is fixedly installed with abutment rod 34, the outer wall of the side of disc 32 close to return spring 33 is fixedly installed with push rod 35, and the end of push rod 35 is fixedly installed with annular plate 36, the inner wall of butt joint cylinder 2 is set up with shrinkage cavity 37, the inner wall of shrinkage cavity 37 is provided with compression air bag 38, the surface of the side of compression air bag 38 is fixedly connected with the outer wall of annular plate 36, and the inner wall of butt joint cylinder 2 is fixedly installed with one-way electromagnetic valve 310, the inner wall of the end of butt joint cylinder 2 away from flange plate 1 is set up with expansion cavity 39, the inside of expansion cavity 39 is provided with expansion air bag 311, the arc outer wall of expansion air bag 311 is fixedly connected with connecting pipe 312, and the end of connecting pipe 312 is fixedly connected with annular air bag 313, the arc outer wall of butt joint cylinder 2 is set up with limiting slot 314, and the arc outer wall of annular air bag 313 is set up with annular groove 315.

[0024] Further, the inner wall of flange plate 1 and disc 32 is set up with circular hole, so that flange plate 1 is connected with the pipeline that needs to butt joint through bolt, and the number of return spring 33 is set with multiple groups, and multiple groups of return spring 33 are evenly distributed on the side wall of disc 32 in circumferential array, so that disc 32 always has the movement trend of moving away from the side of butt joint cylinder 2 in initial state, specifically, the number of abutment rod 34 is set with multiple groups, and multiple groups of abutment rod 34 are set on the arc surface outside of the above-mentioned circular hole, so that the end surface of bolt generates extrusion force to abutment rod 34 when installing, and then promotes disc 32 to move towards the inside of movable cavity 31, in addition, the inner wall of butt joint cylinder 2 is set up with push hole matched with push rod 35, so that the horizontal sliding of disc 32 can generate extrusion thrust to annular plate 36, and then promotes annular plate 36 to extrude compression air bag 38 in cooperation with shrinkage cavity 37.

[0025] Meanwhile, the compression air bag 38 is connected with the inside of the expansion air bag 311 through the one-way electromagnetic valve 310, and the inside cavities of the compression air bag 38 and the expansion air bag 311 are filled with inert gas, so that the volumes of the compression air bag 38 and the expansion air bag 311 will not change greatly due to the change of external temperature, thereby ensuring the relative stability of the volumes of the expansion air bag 311 and the annular air bag 313, so as to improve the sealing effect of the device when being connected with the pipeline. Further, the passage direction of the one-way electromagnetic valve 310 is from the compression air bag 38 to the side of the expansion air bag 311, so that when the compression air bag 38 is extruded, the inert gas in the compression air bag 38 enters the expansion air bag 311 through the one-way electromagnetic valve 310. Due to the size limitation of the expansion cavity 39, the inert gas in the expansion air bag 311 will enter the annular air bag 313 through the connecting pipe 312 to increase the volume of the annular air bag 313. Meanwhile, the annular air bag 313 is arranged in the limiting groove 314. Specifically, the inner surface of the limiting groove 314 is arranged in an arc shape, so that after the volume of the expansion air bag 311 is increased, the limiting groove 314 arranged in the arc shape is used to prevent the expansion air bag 311 from being excessively deviated in the horizontal direction. Meanwhile, the arc outer surface can also increase the coverage area formed by the expansion, so as to effectively seal the gap between the connecting cylinder 2 and the pipeline, thereby ensuring the sealing effect between the entire compensator and the pipeline and improving the risk resistance of the device.

[0026] In addition, the annular grooves 315 are arranged in multiple groups, and the multiple groups of annular grooves 315 are arranged on the arc outer surface of the annular air bag 313 away from the flange plate 1. Therefore, when the annular air bag 313 is extruded and deformed, the annular grooves 315 can fill the contact part between the annular air bag 313 and the inner wall of the pipeline, so as to ensure the fitting effect of the annular air bag 313 even if the inner wall of the pipeline has irregular gaps, thereby improving the sealing performance and use effect of the entire device.

[0027] In the utility model, when using, the staff holds the flange plate 1 and aims the butt joint cylinder 2 at the pipeline end part that needs to be connected, and inserts the butt joint cylinder 2 completely, rotates the flange plate 1 and aims the circular hole formed in the inside thereof at the flange of the pipeline end part, then installs the flange plate 1 and the flange of the pipeline end part through bolt, in the process of installation, due to the extrusion of the bolt to the resisting rod 34, the disc 32 is displaced horizontally in the movable cavity 31, at this time, the inert gas in the compression air bag 38 enters the inflation air bag 311 through the one-way electromagnetic valve 310 by the extrusion of the push rod 35 and the annular plate 36, due to the size limitation of the inflation cavity 39, the inert gas in the inflation air bag 311 will enter the annular air bag 313 through the connecting pipe 312, to increase the volume of the annular air bag 313, through the arc-shaped limiting groove 314, the inflation air bag 311 will not be excessively deviated in the horizontal direction, and the arc-shaped outer surface can also increase the coverage area formed by unfolding, thereby effectively plugging the joint gap between the butt joint cylinder 2 and the external pipeline, thereby guaranteeing the sealing effect between the whole compensator and the pipeline, and improving the risk resistance of the device.

[0028] The utility model has been described in detail above, but some modifications or improvements can be made on the basis of the utility model, which is obvious to the general technical personnel in the technical field. Therefore, the modifications or improvements without departing from the spirit of the utility model are within the protection scope of the utility model.

Claims

1. A sealing device for a compensator, comprising a flange (1), wherein a connecting sleeve (2) is fixedly installed on the side wall of the flange (1), characterized in that: The inside of the docking cylinder (2) is provided with a sealing component (3); The sealing assembly (3) includes a movable cavity (31) which is located on the inner wall of the flange (1). A disc (32) is slidably mounted on the inner wall of the movable cavity (31). A return spring (33) is fixedly connected between the side wall of the disc (32) and the inner wall of the movable cavity (31). A stop rod (34) is fixedly mounted on the outer wall of the disc (32) away from the return spring (33). A push rod (35) is fixedly mounted on the outer wall of the disc (32) near the return spring (33). An annular plate (36) is fixedly mounted at the end of the push rod (35). A contraction cavity (37) is provided on the inner wall of the docking cylinder (2). The inner wall of the contraction cavity (37) is provided with... A compression airbag (38) is provided, one side surface of which is fixedly connected to the outer wall of the annular plate (36). A one-way solenoid valve (310) is fixedly installed on the inner wall of the docking cylinder (2). An expansion cavity (39) is provided on the inner wall of the end of the docking cylinder (2) away from the flange (1). An expansion airbag (311) is provided inside the expansion cavity (39). A connecting pipe (312) is fixedly connected to the arc-shaped outer wall of the expansion airbag (311). An annular airbag (313) is fixedly connected to the end of the connecting pipe (312). A limit groove (314) is provided on the arc-shaped outer wall of the docking cylinder (2). An annular groove (315) is provided on the arc-shaped outer wall of the annular airbag (313).

2. The sealing device for a compensator according to claim 1, characterized in that: Both the flange (1) and the disc (32) have circular holes on their inner walls.

3. The sealing device for a compensator according to claim 2, characterized in that: The number of the abutment rods (34) is set in multiple sets, and the multiple sets of abutment rods (34) are set on the outer side of the arc-shaped surface of the above-mentioned circular hole.

4. The sealing device for a compensator according to claim 1, characterized in that: The compressed airbag (38) is connected to the interior of the inflatable airbag (311) through a one-way solenoid valve (310), and the internal cavities of the compressed airbag (38) and the inflatable airbag (311) are filled with inert gas.

5. The sealing device for a compensator according to claim 1, characterized in that: The passage direction in the one-way solenoid valve (310) is from the compressed air bag (38) to the inflated air bag (311).

6. The sealing device for a compensator according to claim 1, characterized in that: The annular airbag (313) is disposed in the limiting groove (314), and the inner surface of the limiting groove (314) is configured as an arc.

7. The sealing device for a compensator according to claim 1, characterized in that: The number of annular grooves (315) is set in multiple sets, and multiple sets of annular grooves (315) are set on the arc-shaped outer surface of the annular airbag (313) away from the flange (1).

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