CN217714142U

CN217714142U - Chain type pressure plugging device

Info

Publication number: CN217714142U
Application number: CN202221666744.3U
Authority: CN
Inventors: 卢现昆; 殷召成; 贾世灵; 库雪刚; 陈大伟; 任立斌
Original assignee: China Petroleum and Chemical Corp
Current assignee: China Petroleum and Chemical Corp
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-11-01
Anticipated expiration: 2032-06-29

Abstract

The utility model relates to a pipeline leaking stoppage technical field, the utility model aims to provide a stifled ware is pressed in chain area to solve the plugging device among the prior art and produce the technical problem that the closure plate twists reverse or take place operating handle to tumble easily in the use. The chain type belt pressure plugging device comprises a plugging plate, a flexible fixing structure and an operating handle rotating around a central axis, wherein the operating handle is used for applying downward acting force to the plugging plate, the lower end of the operating handle is rotatably assembled with a counterweight pressing block, the upper end of the counterweight pressing block is provided with a mounting hole, and a balance bearing fixed with the operating handle is arranged in the mounting hole to prevent the plugging plate from being twisted by the operating handle to generate torsional deflection; the lower end of the counterweight pressing block is provided with a mounting structure for detachably assembling the leakage-stopping plate, and the mounting structure is positioned on the central axis; the counterweight pressing block is used for pressing the plugging plate by means of dead weight and is matched with the operating handle to compress the plugging plate at the leakage position of the plugging pipeline, so that the plugging plate is tightly matched with the leakage position of the pipeline.

Description

Chain type pressurized plugging device

Technical Field

The utility model relates to a pipeline leaking stoppage technical field, concretely relates to chain area presses plugging device.

Background

The pipeline under pressure is probably because of reasons such as corrosion of self material or conveying medium after the connection arrangement, appears leaking partially after long-term use, also can appear because of external reason for example collide with or artificial factor leaks, in the normal transportation process of pipeline, can't stop the transport of pipeline immediately usually, carries out the maintenance of pipeline again, can only shut down the pipeline transport after the transport work in appointed time stage is accomplished, and then carries out the maintenance of pipeline. Therefore, leakage positions of the pipelines need to be temporarily blocked when the pipelines run, loss is reduced to the maximum in a short time under the condition that normal communication of the pipelines is not influenced, an effective sealing structure is established at the leakage position of the pipelines, the key point of pipeline blocking is that the technical implementation process relates to comprehensive application of multiple subjects such as mechanics, materials, hydraulic technology and the like, and the emergency repair technology is used for maintaining safe and stable production of devices and preventing accidents.

The utility model discloses a be equipped with the plugging device that is used for carrying out the shutoff to the position of revealing when the pipeline reveals among the prior art, chinese utility model patent that bulletin number is CN214197760U if the grant is published discloses a quick plugging device of pipeline, including magnetic force leaking stoppage unit, connect the operating handle (the manual fastening structure in this patent) on magnetic force leaking stoppage unit and can connect the pipeline compact structure on operating handle with rotating, magnetic force leaking stoppage unit includes the plugboard (strong magnetic base in this patent), the one end of plugboard forms the cambered surface, can reveal the position shutoff with the pipeline, the plugboard can adsorb rapidly on the pipeline, and can make pipeline compact structure and plugboard fix on the pipeline through control operating handle, pipeline compact structure includes the flexible fixed knot structure of rotation assembly on operating handle, twist operating handle simultaneously at the in-process that compresses tightly the plugboard, with the isobaric fixed knot structure tensioning of flexible fixed knot structure on the pipeline, pipeline fixed knot structure after the tensioning seals the leaking stoppage of leaking stoppage board and operating handle on the pipeline fixedly, accomplish the leaking stoppage of pipeline.

When the plugging device is used, the handle needs to be manually screwed to tightly press the plugging plate and tension the flexible fixing structure, and the plugging plate pressed at the pipeline leakage position needs to be kept in a fixed state in the pressing and screwing process. However, in the process of screwing the operating handle, the operating handle rotatably connected to the upper end of the leakage blocking plate can generate friction and torsion on the leakage blocking plate, and the leakage blocking plate and the operating handle are only in rotating fit with each other through the shaft sleeve, so that the rotating connection position of the leakage blocking plate and the operating handle is weak, the situation that the leakage blocking plate is twisted by the operating handle on a pipeline and deflects is easily caused in the process of screwing the operating handle, the leakage blocking position is leaked again or the leakage blocking is invalid, the situation that the handle is overturned or the connection position of the operating handle and the leakage blocking plate is directly twisted off is easily caused when the torsion is too large, the repeated spraying of the leakage position or the injury of an operator is caused, and the pipeline leakage blocking operation is not facilitated. Therefore, there is a need for a plugging device with flexibility in use, so as to enable the operating handle to be screwed normally, tension the flexible fixing structure, and ensure the overall connection strength and stability of the plugging plate and the operating handle during the screwing process of the operating handle.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a leaking stoppage ware is pressed in chain area to the plugging device who solves among the prior art produces easily in the use that the plugboard twists reverse or takes place the technical problem that operating handle tumbled.

In order to achieve the above object, the utility model provides a technical scheme of leaking stoppage ware is pressed in chain area is:

a chain type belt pressure leak stopper comprises a leak stopping plate for blocking a pipeline, a flexible fixing structure for tensioning the pipeline in a surrounding mode, and an operating handle which rotates around a central axis and is in threaded connection with the flexible fixing structure, wherein the operating handle is used for applying downward acting force to the leak stopping plate, the lower end of the operating handle is rotatably assembled with a counterweight pressing block, the upper end of the counterweight pressing block is provided with a mounting hole for the operating handle to penetrate through, a balance bearing which is fixed with the operating handle to keep the operating handle stable is arranged in the mounting hole, and the operating handle is rotatably assembled in the counterweight pressing block through the balance bearing, so that the leak stopping plate is prevented from being twisted by the operating handle to generate torsional offset; the lower end of the counterweight pressing block is provided with a mounting structure for detachably assembling the leakage-blocking plate, and the mounting structure is positioned on the central axis; the counterweight pressing block is used for pressing the plugging plate by means of dead weight and is matched with the operating handle to compress the plugging plate on the leakage position of the plugging pipeline, so that the plugging plate is tightly matched with the leakage position of the pipeline.

Has the advantages that: the chain type pressure plugging device in the utility model can establish an effective sealing structure at the position of pipeline leakage without influencing the connection and operation of the pressure pipeline, not only can stably and firmly fix the plugging plate on the pipeline by arranging a counterweight pressing block between the operating handle and the plugging plate, but also can transfer the rotary connecting position of the operating handle to the counterweight pressing block, compared with the direct rotary assembly of the operating handle on the plugging plate, the operating handle is assembled by a bearing in the assembly pressing block, the stability of the operating handle during assembly and use in the counterweight pressing block is ensured, the friction torsion of the operating handle on the plugging plate is reduced, the plugging plate is firmly pressed and assembled, the torsion is not easy to generate, the counterweight pressing block plays the role of counterweight pressing, the inner mounting hole is rotationally matched with the operating handle through a balance bearing, the radial pressure at the connecting position is reduced, the risk of the operation handle tipping and the fracture of the connecting position when the torsion is too large is effectively reduced; simultaneously, through mounting structure releasable connection between counter weight briquetting and the plugging plate, the mobility of plugging plate has been taken into account when can closely fixing, and the pressure equipment condition and the position of plugging plate can the activity adjustment, also can change different plugging plates at any time, make the use flexibility and the stability of chain area pressure plugging device all obtain guaranteeing, solved the plugging device among the prior art effectively and produced the plugging plate in the use and twist reverse or take place the technical problem that operating handle tumbled easily.

Preferably, the counterweight pressing block comprises a pressing block body and a sealing cover, the pressing block body is arranged in a split mode, the sealing cover is detachably connected to the pressing block body, the mounting hole is formed in the pressing block body, the mounting hole comprises a bearing accommodating portion used for arranging the balance bearing, a sealing cover through hole corresponding to the mounting hole is formed in the sealing cover, the aperture of the sealing cover through hole is smaller than that of the mounting hole, a blocking edge is formed in the mounting hole, and an annular boss matched with the blocking edge in a blocking mode is arranged on the periphery of the portion, extending into the mounting hole, of the operating handle. The annular blocking platform is matched with the mounting hole, so that the operating handle is integrally and stably rotatably mounted in the counterweight pressing block, and meanwhile, the pressing cover can be in blocking fit with the annular boss, so that the lower end of the operating handle is fixed in the counterweight pressing block.

Preferably, the mounting hole is a stepped hole, one end of the balance bearing is fixed on a stepped surface of the stepped hole in a press-fitting mode, and the other end of the balance bearing is used for being matched with the annular boss in a stop mode. The shoulder hole can also hold fixed balance bearing with annular boss adaptation, reduces the installation degree of difficulty and the fit clearance of operating handle in the mounting hole, does benefit to the stability that operating handle connects on the counter weight briquetting.

Preferably, the sealing cover and the pressing block body are fixedly assembled through a threaded piece penetrating from the outside. The screw can firmly fasten the sealing cover on the pressing block body, and meanwhile, the screw is convenient to detach and is beneficial to maintenance and repair.

Preferably, the cover comprises two split plates which are symmetrical and split, the two assembling plates are provided with semicircular through holes, and the two semicircular through holes are butted to form the sealing cover through holes after the two assembling plates are assembled. The closing cap is the concatenation board of components of a whole that can function independently assembling, makes the closing cap can penetrate into the periphery of operating handle and assemble into the board behind the mounting hole at operating handle to can be used for fixing on the counter weight briquetting.

Preferably, the mounting structure at the lower end of the counterweight pressing block is an insertion structure which is in interference fit with the leakage blocking plate along the horizontal direction. The mounting structure is interference plug bush complex structrual installation, not only can make counter weight briquetting and bushing firm in connection, can be convenient for dismantle rapidly simultaneously and change the bushing, and the cooperation is inseparable, easy dismounting, and the interference plug bush cooperation also need not the peripheral hardware connecting piece, does benefit to the installation fastening.

Preferably, grafting structure is including welding the depression bar on the terminal surface under the counter weight briquetting, still including setting firmly the connection boss that corresponds with the depression bar on the plugging plate, is equipped with on the connection boss and penetrates fixed slot with the depression bar adaptation for the depression bar, thereby the counter weight briquetting passes through the depression bar and inserts slot and plugging plate fixed connection. Through establishing the plug-in structure as the mode of disassembling of depression bar and boss, through the interference plug bush mode with the depression bar in inserting the slot during connection to can fix firmly the cooperation position of plugboard and counter weight briquetting on the horizontal direction, prevent that the plugboard from twisting.

Preferably, the slot is a U-shaped slot, and the compression bar is a connecting rod structure with a U-shaped cross section. The U-shaped matching has the effect of further rotation stopping, and is beneficial to the rotation and torsion preventing connection and fixation of the leakage blocking plate.

Preferably, the periphery of the operating handle is provided with external threads, the operating handle is provided with a buckle in a threaded manner, the flexible fixing structure is a chain with one end hinged to the buckle, and the other end of the buckle is provided with a hook; hang on the couple behind the pipeline through with the chain, twist operating handle soon and make the buckle remove along operating handle's extending direction, realize the tensioning of chain or relax, make operating handle can compress tightly counter weight briquetting and leak stoppage board when the chain tensioning.

Preferably, a holding rod perpendicular to the extending direction of the handle is arranged at one end of the operating handle far away from the pipeline in a penetrating mode. The holding rod is used for an operator to hold the screwing operation handle in a labor-saving way.

Drawings

Fig. 1 is a schematic structural view of a chain type pressurized plugging device in example 1 according to the present invention;

fig. 2 is a schematic partial enlarged structure view of a selected part a of the chain type pressurized plugging device in fig. 1;

FIG. 3 is a front view of the upper blanking plate of the chain belt press blanking plug of FIG. 1;

fig. 4 is a top view of the upper closure plate of the chain belt press closure of fig. 1.

Description of reference numerals:

1. an operating handle; 2. a counterweight pressing block; 3. a leakage blocking plate; 4. an annular boss; 5. sealing the cover; 6. a briquetting body; 7. mounting holes; 8. a balance bearing; 9. a pressure lever; 10. connecting the bosses; 11. a slot; 12. buckling; 13. hooking; 14. a chain; 15. a holding rod; 16. a rubber pad; 17. a pipeline; 18. a threaded hole.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention, i.e., the described embodiments are merely illustrative of some, but not all, of the embodiments of the invention. The components of the embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiment of the present invention, all other embodiments obtained by the person skilled in the art without creative work belong to the protection scope of the present invention.

It is noted that relational terms such as "first" and "second," and the like, which may be present, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, terms such as "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, elements recited by the phrases "comprising a," 8230, "" etc. are not intended to exclude processes, methods, and the like, in which such elements are included.

In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" when they are used are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be connected internally or indirectly to each other. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

In the description of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "provided" may be used in a broad sense, for example, the object of "provided" may be a part of the body, or may be arranged separately from the body and connected to the body, and the connection may be a detachable connection or a non-detachable connection. The specific meaning of the above terms in the present invention can be understood by those skilled in the art from the specific situation.

The present invention will be described in further detail with reference to examples.

The utility model provides a plugging device's embodiment 1 is pressed in chain area:

as shown in fig. 1 to 4, the chain type pressurized plugging device in this embodiment includes an operating handle 1, a counterweight pressing block 2, and a plugging plate 3, which are sequentially connected from top to bottom, and defines that the operating handle 1 extends up and down, the axis of the operating handle is a central axis, the operating handle 1 can rotate around the central axis, a flexible fixing structure is connected to the operating handle 1 through a thread, and the flexible fixing structure can be tensioned or loosened when the operating handle 1 is screwed to rotate, so that the flexible fastening can be maintained after the plugging plate 3 plugs the pipeline leakage position, and the chain type pressurized plugging device is fixed on the pipeline. The lower end of the counterweight pressing block is provided with a mounting structure for detachably assembling the leakage-stopping plate 3, and the mounting structure is positioned on the central axis. The use of chain area pressure plugging device in this embodiment on the pipeline and dismantlement method all are the same with prior art, nevertheless through the setting of counter weight briquetting 2 and with 3 releasable connections of plugging plate on counter weight briquetting 2 to can compromise the use flexibility and the stability of plugging device simultaneously, do benefit to going on of pipeline area pressure maintenance leaking stoppage operation.

As shown in fig. 1, the operating handle 1 is a cylindrical long rod extending up and down, the bottom of the operating handle 1 is used for being rotatably connected with the counterweight pressing block 2, and the periphery of the bottom of the operating handle 1 is integrally provided with a radially extending annular boss 4. As shown in fig. 1 and 2, the counterweight pressing block 2 is a rectangular block structure, and includes a sealing cover 5 and a pressing block body 6 that are separated from each other and detachably fixed together, an upward mounting hole 7 is formed in the pressing block body 6, and a sealing cover through hole corresponding to the mounting hole 7 is formed in the sealing cover 5. The mounting hole 7 in this embodiment is a stepped hole with a large upper hole and a small lower hole, the hole diameter of the small diameter section of the mounting hole 7 and the hole diameter of the sealing cover hole are matched with the rod diameter of the operating handle 1, so that the operating handle 1 can be radially and limitedly fixed in the counterweight pressing block 2, and the large diameter hole section of the mounting hole 7 is used for being matched with the annular boss 4, so that the annular boss 4 is accommodated and limited in the annular boss 4.

As shown in fig. 2, a balance bearing 8 is further fixed in the mounting hole 7 of the pressure block body 6, and the mounting hole 7 includes a bearing housing portion for disposing the balance bearing 8. The balance bearing 8 enables the operation handle 1 to be stably rotatably mounted in the mounting hole 7. The balance bearing 8 is matched with the large-diameter section of the mounting hole 7 in a press-fitting mode, the balance bearing 8 is fixedly arranged on a table top of the large-diameter section of the mounting hole 7 in a press-fitting mode, a bearing accommodating portion is formed by the table top and a hole wall of the large-diameter section of the mounting hole 7, and the top of the balance bearing 8 is used for being matched with the annular boss 4 in a stop-stop mode after the operating handle 1 penetrates through the mounting hole 7. As shown in fig. 2, after the operating handle 1 penetrates through the mounting hole 7, the mounting hole 7 is blocked by the sealing cover 5, the upper end of the annular boss 4 is blocked by the sealing cover 5, the lower end of the annular boss 4 is blocked by the balance bearing 8, and the lower end part of the operating handle 1, which is positioned at the annular boss 4, can penetrate through the balance bearing 8 and extend into the small-diameter section at the lower end of the mounting hole 7, so that the operating handle 1 can be stably supported, fixed and rotatably mounted in the counterweight pressing block 2.

In order to make the sealing cover 5 penetrate into the mounting hole 7 and then seal the mounting hole 7, as shown in fig. 2, the sealing cover 5 is composed of two spliced plates which are symmetrical and spliced in a split mode, semicircular holes are formed in the two spliced plates, the two semicircular holes are butted to form a sealing cover perforation after the two spliced plates are spliced, perforations are also formed in the spliced plates, threaded holes 18 corresponding to the perforations are formed in the pressing block body 6, threaded pieces are arranged outside the sealing cover 5 in a penetrating mode, the threaded pieces penetrate into the perforations and are assembled in the threaded holes 18 in a threaded mode, and therefore the sealing cover 5 is fixedly assembled on the pressing block body 6, and the fixed connection of the operating handle 1 and the balance weight pressing block 2 is completed.

As shown in fig. 1 to 3, the plugging plate 3 is fixedly assembled at the bottom center position of the pressing block body 6 through a mounting structure, the plugging plate 3 in this embodiment is an arc-shaped bent plate, an arc-shaped surface of the plugging plate 3 is arranged downward for being attached to a pipeline leakage position, and a rubber pad 16 for being attached to the leakage position is further fixedly arranged on the plugging plate 3. As shown in fig. 2, the installation structure is an insertion structure that is in interference fit with the plugging plate 3 along the horizontal direction, so that the chain type pressure plugging device in this embodiment can replace different plugging plates at any time when the outer diameter of the pipeline or the size of the leakage opening is different. Wherein, grafting structure still including setting firmly the boss 10 of being connected on the leak stoppage board 3 with depression bar 9 correspondence including welding depression bar 9 on 6 terminal surfaces of briquetting body, is equipped with on the boss 10 of being connected and penetrates fixed slot 11 with depression bar 9 adaptation for depression bar 9, thereby the counter weight briquetting passes through depression bar 9 and inserts slot 11 and leak stoppage board 3 fixed connection, when the leak stoppage board 3 is being changed to needs, extracts depression bar 9 from connecting boss 10. The compression bar 9 and the connecting boss 10 are both positioned on the central axis. As shown in fig. 4, the slot 11 in this embodiment is a U-shaped slot, the pressure lever 9 is a link structure with a U-shaped cross section and adapted to the U-shaped slot, and the U-shaped slot and the U-shaped link can be fixed by inserting and can also effectively fix the connection position by rotation stopping.

As shown in fig. 1, a horizontally extending buckle 12 is rotatably assembled on the operating handle 1, the flexible fixing structure is a chain 14 hinged on the buckle 12, an external thread extending up and down is arranged on the periphery of the rod body of the operating handle 1, the buckle 12 is a threaded sleeve structure assembled on the operating handle 1 through a thread, wherein one horizontal end of the buckle 12 is hinged with the chain 14, and the other end of the buckle 12 is provided with a hook 13, as shown in fig. 1 and fig. 2, when in use, the chain 14 firstly bypasses a pipeline 17, the other end of the chain 14 is hung on the hook 13, and then the operating handle 1 is screwed, so that the buckle 12 can move up and down along the operating handle 1, and the tensioning, fixing or loosening and disassembling of the chain 14 is realized, and the operating handle 1 can compress the counterweight pressing block 2 and the leakage blocking plate 3 on the pipeline 17 when the chain 14 is tensioned. In this embodiment, as shown in fig. 1, a horizontally extending holding rod 15 is further penetrated through the upper end of the operating handle 1, and the holding rod 15 is used for being held by an operator, so that the operating handle 1 can be screwed in a labor-saving manner.

The operation process of the chain type belt pressure plugging device in the embodiment in practical application is as follows: before the pipeline leakage plugging device is used, a leakage plugging plate 3 with the size and the dimension matched with a pipeline leakage opening is selected, the leakage plugging plate 3 is pressed and fixed on the pipeline leakage position, a rubber pad 16 is used for plugging the leakage position, then a chain 14 surrounds a pipeline 17 and is hung on a hook 13, the operating handle 1 is downwards pressed at the moment, the counterweight pressing block 2 continues to press the leakage plugging plate 3 to be plugged, the operating handle 1 is screwed, the buckle 12 moves upwards along the operating handle 1, finally the chain 14 is tensioned and fixed, and the chain type pressure plugging device completes the leakage plugging operation on the pressure pipeline.

The chain type pressure plugging device in the embodiment can establish an effective sealing structure at a pipeline leakage position under the condition that the connection operation of a pipeline under pressure is not influenced, the plugging plate 3 can be stably and firmly pressed and fixed on the pipeline by arranging the counterweight pressing block 2 between the operating handle 1 and the plugging plate 3, and meanwhile, the rotating connection position of the operating handle 1 can be transferred to the counterweight pressing block 2, compared with the method that the operating handle 1 is directly and rotatably assembled on the plugging plate 3, the operating handle 1 is assembled in the assembling pressing block through a bearing, the stability of the operating handle 1 during the assembling and the use in the counterweight pressing block 2 is ensured, the friction of the operating handle 1 on the plugging plate 3 is reduced, the plugging plate 3 is firmly pressed and is not easy to twist, the counterweight pressing block 2 plays a role in stabilizing a counterweight, the radial pressure at the connection position is reduced by the matching of the internal mounting hole 7 and the operating handle 1 through the bearing, and the risk that the operating handle 1 is tipped and the connection position is broken when the torsion is too large is effectively reduced; simultaneously, releasable connection between counter weight briquetting 2 and the plugboard 3 has taken into account the activity of plugboard 3 in the time of can inseparable fixed, can the pressure equipment condition and the position of activity adjustment plugboard 3, also can change different plugboards 3 at any time, makes the use flexibility and the stability of chain area pressure plugboard all obtain guaranteeing, has solved the plugging device among the prior art easily in the use and has produced the plugboard and twist reverse or take place the technical problem that operating handle tumbled.

The utility model provides a plugging device's embodiment 2 is pressed in chain area:

the difference from embodiment 1 is that, in embodiment 1, the counter weight 2 includes a press body 6 provided separately and a cover 5 detachably attached to the press body 6. In this embodiment, the counter weight briquetting is integral type massive structure, is equipped with the mounting hole that supplies the operating handle adaptation to penetrate on the counter weight briquetting, has set firmly the bearing in the mounting hole, and operating handle passes through the bearing and rotates the assembly on the counter weight briquetting, adds the snap ring or wears to establish the fastener at the drill way of mounting hole this moment and fixes operating handle in the mounting hole. In other embodiments, the counterweight pressing block can be designed into a split structure which is split and assembled so as to be fixedly connected with the operating handle conveniently.

The utility model provides a plugging device's embodiment 3 is pressed in chain area:

the difference from embodiment 1 is that, in embodiment 1, the mounting hole 7 is a stepped hole, one end of the balance bearing 8 is press-fitted and fixed on a stepped surface of the stepped hole, the annular boss 4 is arranged on the periphery of the bottom of the operating handle 1, and the other end of the balance bearing 8 is used for being in stop fit with the annular boss 4. In the embodiment, the mounting hole is an equal-diameter through hole, the bottom of the operating handle is not provided with an annular boss, the balance bearing is fixedly arranged in the mounting hole, and the operating handle penetrates through the balance bearing in the mounting hole and then is welded with the inner ring of the bearing, so that the operating handle is fixedly arranged in the counterweight pressing block and can rotate.

The utility model provides a concrete embodiment 4 of leaking stoppage ware is pressed in chain area:

the difference from embodiment 1 is that in embodiment 1, the cover 5 and the press body 6 are fixedly fitted by a screw externally threaded. In this embodiment, the closing cap and the pressing block body are assembled and fixed by a metal hinge. In other embodiments, the sealing cover can be directly welded on the pressing block body after the operating handle is penetrated.

The utility model provides a plugging device's embodiment 5 is pressed in chain area:

the difference from embodiment 1 is that in embodiment 1, the sealing cover 5 includes two split-jointed assembly plates that are symmetrical to each other, and the two assembly plates are provided with semicircular through holes. In this embodiment, the number of the splice plates of the cover is changed to two or more. In other embodiments, the cover may be replaced with a blocking member such as a stopper rod or a band that can block the operation handle in the press block body.

The utility model provides a plugging device's embodiment 6 is pressed in chain area:

the difference from the embodiment 1 is that in the embodiment 1, the mounting structure of the counterweight pressing block 2 for connecting with the leakage blocking plate 3 is a plug-in structure, and interference plug-in sleeve fit between the counterweight pressing block and the leakage blocking plate is realized, that is, the counterweight pressing block 2 is provided with a pressing rod 9, the leakage blocking plate 3 is provided with a connecting boss 10, the connecting boss 10 is provided with a slot 11, the slot 11 is a U-shaped slot, and the pressing rod 9 is a U-shaped connecting rod. In this embodiment, the slot is a blind slot, which may be a rectangular slot or a circular slot, and the pressing rod is a main structure adapted to the slot, and corresponding to the shape of the slot, the pressing rod may be a cylinder or a square column. In other embodiments, the mounting structure is a slot provided on the counterweight pressing block and a pressing rod provided on the leakage blocking plate and corresponding to the slot. In other different embodiments, the mounting structure may also be a butt joint structure, a connection plate structure, or a threaded connection member, for example, a connection plate is provided on the leakage blocking plate, a fixing plate in butt joint with the connection plate is also provided on the counter weight pressing block, the two plates are fixed by a detachable connection member after being in butt joint, or the threaded member is directly inserted to fix the leakage blocking plate below the counter weight pressing block.

Finally, it should be noted that the above mentioned embodiments are only preferred embodiments of the present invention, and not intended to limit the present invention, and although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that the technical solutions described in the foregoing embodiments may be modified without inventive effort, or some technical features may be substituted equally. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A chain type pressurized plugging device comprises a plugging plate (3) for plugging a pipeline, a flexible fixing structure for tensioning the pipeline in a surrounding mode, and an operating handle (1) which rotates around a central axis and is in threaded connection with the flexible fixing structure, wherein the operating handle (1) is used for applying downward acting force to the plugging plate (3), the chain type pressurized plugging device is characterized in that a counterweight pressing block (2) is assembled at the lower end of the operating handle (1) in a rotating mode, a mounting hole (7) for the operating handle (1) to penetrate is formed in the upper end of the counterweight pressing block (2), a balance bearing (8) which is fixed with the operating handle (1) to keep the operating handle (1) stable is arranged in the mounting hole (7), and the operating handle (1) is rotatably assembled in the counterweight pressing block (2) through the balance bearing (8), so that the plugging plate (3) is prevented from being twisted by the operating handle (1) to generate torsional offset; the lower end of the counterweight pressing block (2) is provided with a mounting structure for detachably assembling the leakage-blocking plate (3), and the mounting structure is positioned on a central axis; the counterweight pressing block (2) is used for pressing the leakage blocking plate (3) by means of dead weight and is matched with the operating handle (1) to compress the leakage blocking plate (3) at the leakage blocking position of the pipeline, so that the leakage blocking plate (3) is tightly matched with the leakage blocking position of the pipeline.

2. The chain type belt pressure leak stopper according to claim 1, wherein the counterweight pressing block (2) comprises a pressing block body (6) and a sealing cover (5) detachably connected to the pressing block body (6), the mounting hole (7) is formed in the pressing block body (6), the mounting hole (7) comprises a bearing accommodating part for arranging the balance bearing (8), a sealing cover through hole corresponding to the mounting hole (7) is formed in the sealing cover (5), the hole diameter of the sealing cover through hole is smaller than that of the mounting hole (7) so as to form a blocking edge on the mounting hole (7), and an annular boss (4) matched with the blocking edge is arranged on the periphery of the part, extending into the mounting hole (7), of the operating handle (1).

3. The chain type belt-pressing leak stopper according to claim 2, wherein the mounting hole (7) is a stepped hole, one end of the balance bearing (8) is fixed on the stepped surface of the stepped hole in a press-fitting manner, and the other end of the balance bearing is used for being matched with the annular boss (4) in a stop manner.

4. Chain belt press plugging device according to claim 3, characterized in that said cover (5) and said body (6) are fixedly assembled by means of externally threaded elements.

5. The chain type belt pressure plugging device according to claim 4, wherein said sealing cover (5) comprises two assembling plates which are symmetrical and split and spliced with each other, and a semicircular through hole is arranged on the two assembling plates, and the two semicircular through holes are butted to form the through hole of said sealing cover (5) after the two assembling plates are spliced.

6. The chain type pressurized plugging device according to any one of claims 1 to 5, wherein the mounting structure at the lower end of said counterweight pressing block (2) is an insertion structure which is in interference insertion fit with said plugging plate (3) along the horizontal direction.

7. The chain type belt pressure plugging device according to claim 6, wherein the plugging structure comprises a compression bar (9) welded on the lower end face of the counterweight pressing block (2), and further comprises a connecting boss (10) fixedly arranged on the plugging plate (3) and corresponding to the compression bar (9), a slot (11) adapted to the compression bar (9) for the compression bar (9) to penetrate into and fix is arranged on the connecting boss (10), and the counterweight pressing block (2) is inserted into the slot (11) through the compression bar (9) so as to be fixedly connected with the plugging plate (3).

8. Chain belt press plugging device according to claim 7, characterized in that said socket (11) is a U-shaped groove and said press bar (9) is a link structure with a U-shaped cross-section.

9. The chain type belt pressure plugging device according to any one of claims 1-5, wherein the operating handle (1) is provided with external threads on the periphery, a buckle (12) is assembled on the operating handle (1) through the threads, the flexible fixing structure is a chain (14) with one end hinged on the buckle (12), and the other end of the buckle (12) is provided with a hook (13); the chain (14) is hung on the hook (13) after bypassing the pipeline, the operating handle (1) is screwed to enable the buckle (12) to move along the extending direction of the operating handle (1), tensioning or loosening of the chain (14) is achieved, and the operating handle (1) can compress the balance weight pressing block (2) and the leakage blocking plate (3) when the chain (14) is tensioned.

10. Chain belt press plugging device according to any of claims 1-5, wherein said operating handle (1) is threaded with a grip lever (15) perpendicular to the handle extension direction at the end remote from the pipe.