CN114526395B - Double-seal pipeline plugging device - Google Patents
Double-seal pipeline plugging device Download PDFInfo
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- CN114526395B CN114526395B CN202210275721.8A CN202210275721A CN114526395B CN 114526395 B CN114526395 B CN 114526395B CN 202210275721 A CN202210275721 A CN 202210275721A CN 114526395 B CN114526395 B CN 114526395B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L55/00—Devices or appurtenances for use in, or in connection with, pipes or pipe systems
- F16L55/10—Means for stopping flow from or in pipes or hoses
- F16L55/11—Plugs
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Abstract
The invention relates to a double-seal pipeline plugging device, which comprises a support rod and an expansion ring, the left end of the supporting rod is provided with a motor, the supporting rod is provided with a left sliding ring and a right sliding ring, a transmission mechanism connected with the left sliding ring and the right sliding ring is arranged in the supporting rod, an expansion ring is composed of a first arc-shaped part and a second arc-shaped part which are distributed alternately, two ends of the first arc-shaped part are provided with guide surfaces, sliding grooves are formed in the guide surfaces, guide holes are formed in two side walls of the sliding grooves, the second arc-shaped part is provided with support lugs, the support lugs are hinged to the left sliding ring and the right sliding ring through connecting rods respectively, the second arc-shaped part is provided with sliding blocks matched with the sliding grooves, guide columns located in the guide holes are arranged on two sides of the sliding blocks, the left end of the left sealing cover is connected with the left sliding ring, the right end of the left sealing cover is sleeved on the expansion ring and connected with the first arc-shaped part, the right end of the right sealing cover is connected with the right sliding ring, and the left end of the right sealing cover is sleeved on the expansion ring and connected with the first arc-shaped part. The device has the advantages of compact structure, sensitive action and reliable plugging.
Description
Technical Field
The invention relates to a pipeline plugging technology, in particular to a double-seal pipeline plugging device for plugging an opening of a gas pipeline.
Background
In the process of connecting, cutting and changing the pipeline of a gas pipe network, the operation of opening holes and plugging is frequently required. The plugging machine adopted in the field at present mainly performs pipeline plugging through an expansion cylinder, and has the following problems: the equal-diameter hole needs to be formed, otherwise, the plugging cannot be carried out, and the difficulty and the workload for forming the equal-diameter hole are large; the matching degree of the expansion cylinder to the equal-diameter hole is high, and the situation of untight plugging often occurs. In order to solve the problems of the expansion cylinder, those skilled in the art have developed an expansion ring type pipe sealer, such as the patent application with publication number CN212929169U, which can solve the problems of the expansion cylinder, but has the following disadvantages: 1. the plugging failure phenomenon is easy to occur due to the limitation of the self structure; 2. the plugging driving is carried out through external power, so that the control difficulty is increased; 3. the clamping stagnation phenomenon is easy to occur due to unbalanced stress, and the sensitivity and the adaptability are poor.
Disclosure of Invention
The invention aims to provide a double-seal pipeline plugging device which has the advantages of compact structure, sensitive action, reliable plugging and strong adaptability.
In order to solve the above problems in the prior art, the invention provides a dual-seal pipeline plugging device, which comprises a support rod, an expansion ring, a left seal cover and a right seal cover, wherein the support rod is of a tubular structure, a motor and a plugging disc are correspondingly fixed at the left end and the right end of the support rod in a sealing manner, a left sliding ring and a right sliding ring are sleeved on the support rod, a sliding seal structure is arranged between the left sliding ring and the support rod, a transmission mechanism connected with the motor is arranged in the support rod and drives the left sliding ring and the right sliding ring to slide in opposite directions, the expansion ring is formed by combining first arc-shaped parts and second arc-shaped parts which are alternately distributed, two ends of each first arc-shaped part are provided with guide surfaces which are inclined inwards and symmetrically distributed, each guide surface is provided with a sliding groove, guide holes are arranged on two side walls of each sliding groove, each guide hole on the adjacent first arc-shaped parts is in a splayed shape, a support lug is arranged in the middle part of the inner side of each second arc-shaped part, the support lug is hinged with the left sliding ring and the right sliding ring through symmetrically distributed connecting rods, sliding blocks matched with the sliding grooves are arranged at two ends of the second arc-shaped part, guide posts in guide holes are arranged on two sides of the sliding blocks, the left end of the left sealing cover is fixedly connected with the left sliding ring in a sealing mode, the right end of the left sealing cover is sleeved on the expansion ring and fixedly connected with the first arc-shaped part, the right end of the right sealing cover is fixedly connected with the right sliding ring in a sealing mode, and the left end of the right sealing cover is sleeved on the expansion ring and fixedly connected with the first arc-shaped part.
Further, the double-seal pipeline plugging device comprises a transmission mechanism, wherein the transmission mechanism comprises a lead screw, a left-handed nut and a right-handed nut, the lead screw is installed in a support rod through a bearing and connected with a motor, the left-handed nut and the right-handed nut are screwed on the lead screw, the left-handed nut is provided with left lug plates which are symmetrically distributed, the left lug plates extend out of a left guide groove in the support rod, the right-handed nut is provided with right lug plates which are symmetrically distributed, the right lug plates extend out of a right guide groove in the support rod, the left guide groove and the right guide groove are positioned between a left seal cover and a right seal cover, the right side of the left slip ring is provided with a left push-pull rod connected with the left lug plate, and the left side of the right slip ring is provided with a right push-pull rod connected with the right lug plate.
Further, the double-sealing pipeline plugging device comprises a first arc-shaped part and a second arc-shaped part, wherein the first arc-shaped part comprises a first left extrusion part and a first right extrusion part which are symmetrically distributed, the first left extrusion part and the first right extrusion part are connected into a whole through a first connecting part, the second arc-shaped part comprises a second left extrusion part and a second right extrusion part which are symmetrically distributed, the second left extrusion part and the second right extrusion part are connected into a whole through a second connecting part, a vent hole is formed between the adjacent first connecting part and the second connecting part, and a pipe joint communicated with an inner cavity of the support rod is arranged at the left end of the support rod.
Further, the double-seal pipeline plugging device is characterized in that a left seal groove is formed in the inner wall of the left sliding ring, a left seal ring is arranged in the left seal groove, a right seal groove is formed in the inner wall of the right sliding ring, and a right seal ring is arranged in the right seal groove.
Further, the double-seal pipeline plugging device is characterized in that a left ring table is arranged between the left sliding ring and the left guide groove of the supporting rod, a left sealing gasket is embedded in the left side of the left ring table, a right ring table is arranged between the right sliding ring and the right guide groove of the supporting rod, and a right sealing gasket is embedded in the right side of the right ring table.
Further, the double-seal pipeline plugging device is characterized in that a left pressure plate is fixed on the left side of the left sliding ring through a screw, the left end of the left seal cover is extruded between the left sliding ring and the left pressure plate, a right pressure plate is fixed on the right side of the right sliding ring through a screw, and the right end of the right seal cover is extruded between the right sliding ring and the right pressure plate.
Further, the double-seal pipeline plugging device is characterized in that the left sealing cover is provided with a left telescopic joint, the outer wall of the position, corresponding to the expansion ring, of the left sealing cover is provided with left grooves distributed at intervals, the right sealing cover is provided with a right telescopic joint, and the outer wall of the position, corresponding to the expansion ring, of the right sealing cover is provided with right grooves distributed at intervals.
Furthermore, the invention relates to a double-seal pipeline plugging device, wherein two guide posts on two sides of the sliding block are respectively arranged at intervals, and a shaft sleeve is sleeved on each guide post.
Further, the double-seal pipeline plugging device is characterized in that the motor and the plugging disc are connected with the supporting rod through flanges respectively, the motor is provided with a hinge seat, and the left sealing cover and the right sealing cover are made of rubber.
Further, the double-seal pipeline plugging device is characterized in that the number of the first arc-shaped parts and the number of the second arc-shaped parts are four.
Compared with the prior art, the double-seal pipeline plugging device has the following advantages: the invention adopts a tubular structure by arranging a support rod, an expansion ring, a left sealing cover and a right sealing cover, a motor and a plugging disc are correspondingly sealed and fixed at the left end and the right end of the support rod, a left sliding ring and a right sliding ring are sleeved on the support rod, a sliding sealing structure is arranged between the left sliding ring and the support rod and between the right sliding ring and the support rod, a transmission mechanism connected with the motor is arranged in the support rod, the transmission mechanism drives the left sliding ring and the right sliding ring to reversely slide, the expansion ring adopts a structure formed by combining a first arc-shaped part and a second arc-shaped part which are alternately distributed, guide surfaces which are inwards inclined and symmetrically distributed are arranged at the two ends of the first arc-shaped part, sliding grooves are arranged on the guide surfaces, guide holes are arranged on the two side walls of the sliding grooves, the guide holes on the adjacent first arc-shaped parts form a Chinese character 'ba', a support lug is arranged at the middle part of the inner side of the second arc-shaped part, and the support lug is respectively hinged with the left sliding ring and the right sliding ring through connecting rods which are symmetrically distributed, the two ends of the second arc-shaped part are provided with sliding blocks matched with the sliding grooves, the two sides of each sliding block are provided with guide columns in guide holes, the left end of the left sealing cover is fixedly connected with the left sliding ring in a sealing mode, the right end of the left sealing cover is sleeved on the expansion ring and fixedly connected with the first arc-shaped part, the right end of the right sealing cover is fixedly connected with the right sliding ring in a sealing mode, and the left end of the right sealing cover is sleeved on the expansion ring and fixedly connected with the first arc-shaped part. Therefore, the double-seal pipeline plugging device with compact structure, sensitive action, reliable plugging and strong adaptability is formed. In practical application, the left sliding ring and the right sliding ring slide towards two sides through the motor and the transmission mechanism, so that the expansion ring, the left sealing cover and the right sealing cover are in a contraction state, then the plugging device is placed into a gas pipeline from the hole, then the left sliding ring and the right sliding ring slide towards the middle through the motor and the transmission mechanism, and the left sealing cover and the right sealing cover can be tightly extruded on the inner wall of the gas pipeline after the expansion ring is unfolded in place, so that the plugging purpose is realized. The double-channel sealing structure formed by the left sliding ring, the left sealing cover, the expansion ring, the right sealing cover and the right sliding ring is arranged, so that the plugging reliability is improved; through setting up motor and drive mechanism, realized the shutoff from the drive, reduced the control degree of difficulty, order about left sliding ring and the synchronous reverse slip of right sliding ring through drive mechanism, improved the equilibrium of atress and the sensitivity of action, can effectively avoid the jamming phenomenon.
The double-sealed pipe plugging device of the present invention will be described in further detail with reference to the embodiments shown in the drawings.
Drawings
FIG. 1 is a front view of a dual seal pipeline closure of the present invention;
FIG. 2 is a view taken along line A-A of FIG. 1;
FIG. 3 is a top view of a dual seal pipeline closure of the present invention;
FIG. 4 is a view taken along line B-B of FIG. 3;
FIG. 5 is an isometric view of a dual seal pipeline closure of the present invention;
FIG. 6 is a second isometric view of a dual seal pipe closure of the present invention;
FIG. 7 is an elevational view of the expansion ring of the present invention in an expanded condition;
FIG. 8 is a left side view of the expansion ring of the present invention in an expanded state;
FIG. 9 is a first isometric view of the invention with the expansion ring in an expanded condition;
FIG. 10 is an isometric view of the expansion ring of the present invention in an expanded condition;
FIG. 11 is an elevational view of the expansion loop of the present invention in a contracted condition;
FIG. 12 is a left side view of the expansion loop of the present invention in a contracted condition;
FIG. 13 is an isometric view I of the expansion ring of the present invention in a contracted condition;
FIG. 14 is an isometric view two of the expansion loop of the present invention in a contracted condition;
fig. 15 is a right side view of a first arcuate member of the present invention;
fig. 16 is an isometric view of a first arcuate member of the present invention;
fig. 17 is an isometric view two of the first arcuate member of the present invention;
fig. 18 is a right side view of a second arcuate member of the present invention;
figure 19 is an isometric view one of the second arcuate member of the present invention;
figure 20 is an isometric view of a second arcuate member of the present invention;
wherein the left and right seal cups are hidden from view in fig. 7-14 to show the expansion ring and its attachment structure.
Detailed Description
First, it should be noted that, the directional terms such as up, down, left, right, front, rear, etc. described in the present invention are only described according to the drawings for easy understanding, and do not limit the technical solution and the claimed scope of the present invention.
As shown in fig. 1 to 20, an embodiment of a double-sealed pipeline plugging device of the present invention comprises a support rod 1, an expansion ring 2, a left seal cap 3 and a right seal cap 3'. The supporting rod 1 is made to be of a tubular structure, the left end and the right end of the supporting rod 1 correspond to the sealing fixed motor 11 and the plugging disc 12, the supporting rod 1 is sleeved with the left sliding ring 4 and the right sliding ring 4 ', a sliding sealing structure is arranged between the left sliding ring 4 and the supporting rod 1 and between the right sliding ring 4 ' and the supporting rod 1, and the supporting rod 1 is internally provided with a transmission mechanism connected with the motor 11, so that the transmission mechanism drives the left sliding ring 4 and the right sliding ring 4 ' to reversely slide. The expansion ring 2 adopts a structure formed by combining first arc-shaped pieces 21 and second arc-shaped pieces 22 which are alternately distributed, wherein two ends of the first arc-shaped pieces 21 are provided with guide surfaces 211 which are inwards inclined and symmetrically distributed, the guide surfaces 211 are provided with sliding grooves 212, two side walls of the sliding grooves 212 are provided with guide holes 213, and the guide holes 213 on the adjacent first arc-shaped pieces 21 are splayed; a support lug 221 is arranged in the middle of the inner side of the second arc-shaped part 22, the support lug 221 is hinged with the left sliding ring 4 and the right sliding ring 4' through the symmetrically distributed connecting rods 5, sliding blocks 222 matched with the sliding grooves 212 are arranged at two ends of the second arc-shaped part 22, and guide posts 223 in the guide holes 213 are arranged at two sides of the sliding blocks 222. The left end of the left sealing cover 3 is fixedly connected with the left sliding ring 4 in a sealing way, and the right end of the left sealing cover 3 is sleeved on the expansion ring 2 and is fixedly connected with the first arc-shaped part 21; the right end of the right sealing cover 3 ' is fixedly connected with the right sliding ring 4 ' in a sealing way, and the left end of the right sealing cover 3 ' is sleeved on the expansion ring 2 and is fixedly connected with the first arc-shaped part 21.
The double-seal pipeline plugging device with compact structure, sensitive action, reliable plugging and strong adaptability is formed by the structural arrangement. In practical application, firstly, the left sliding ring 4 and the right sliding ring 4 'slide towards two sides through the motor 11 and the transmission mechanism, so that the expansion ring 2, the left sealing cover 3 and the right sealing cover 3' are in a contraction state, then the plugging device is placed into a gas pipeline from an opening, then the left sliding ring 4 and the right sliding ring 4 'slide towards the middle through the motor 11 and the transmission mechanism, and the left sealing cover 3 and the right sealing cover 3' can be tightly extruded on the inner wall of the pipeline after the expansion ring 2 is unfolded in place, so that the plugging purpose is realized. According to the invention, the double-channel sealing structure consisting of the left sliding ring 4, the left sealing cover 3, the expansion ring 2, the right sealing cover 3 'and the right sliding ring 4' is arranged, so that the plugging reliability is improved; by arranging the motor 11 and the transmission mechanism, self-driving of plugging is realized, the control difficulty is reduced, the transmission mechanism drives the left sliding ring 4 and the right sliding ring 4' to synchronously and reversely slide, the stress balance and the action sensitivity are improved, and the clamping stagnation phenomenon can be effectively avoided; through making expansion ring 2 set up first arc 21 and second arc 22 that distribute in turn to the guiding hole 213 that makes on the adjacent first arc 21 forms the splayed, under the dual spacing cooperation of slider 222 and spout 212 and guide column 223 and guiding hole 213, only need push away left sliding ring 4 and right sliding ring 4' and can make first arc 21 and second arc 22 relative slip and realize strutting or shrink expansion ring 2, have simple structure, control convenient characteristics. It should be noted that the stopper is used by being mounted on the lifting and steering mechanism of the stopper machine through the hinged seat of the motor 11, and the structure and the working principle of the stopper machine are well known to those skilled in the art. To ensure the structural stability and the sealing reliability, the end of the second arc-shaped part 22 is attached to the guide surface 211 of the first arc-shaped part 21. In order to improve the motion sensitivity, the present invention generally arranges two guide posts 223 at two sides of the slider 222 at intervals, and sleeves are sleeved on the guide posts 223 to realize stable guiding. In order to ensure the flexible deformation capacity, the left sealing cover 3 and the right sealing cover 3' are made of rubber.
As an optimized scheme, the specific embodiment enables the transmission mechanism to be provided with a screw rod 6, a left-handed nut 7 and a right-handed nut 7 ', wherein the screw rod 6 is installed in the support rod 1 through a bearing and is connected with an output shaft of the motor 11, and the left-handed nut 7 and the right-handed nut 7' are screwed on the screw rod 6; the left-handed nut 7 is provided with left lug plates 71 which are symmetrically distributed, the left lug plates 71 extend out of a left guide groove 13 on the support rod 1, the right-handed nut 7 'is provided with right lug plates 71' which are symmetrically distributed, the right lug plates 71 'extend out of a right guide groove 13' on the support rod 1, and the left guide groove 13 and the right guide groove 13 'are positioned between the left sealing cover 3 and the right sealing cover 3'; the left sliding ring 4 is provided with a left push-pull rod 41 connected with the left ear plate 71 on the right side, and the right sliding ring 4 ' is provided with a right push-pull rod 41 ' connected with the right ear plate 71 ' on the left side. The transmission mechanism has the advantages of compact structure, stable action and good synchronism, and through arranging the left guide groove 13, the right guide groove 13 ', the left-handed nut 7, the right-handed nut 7 ', the left push-pull rod 41 and the right push-pull rod 41 ' at the position between the left sealing cover 3 and the right sealing cover 3 ', on one hand, the sliding sealing reliability of the left sliding ring 4 and the right sliding ring 4 ' is ensured, the axial length of the plugging device can be effectively reduced, the contraction proportion of the expansion ring is improved, on the other hand, the stress balance and the action sensitivity are improved, the size of an opening is favorably reduced, the opening difficulty is reduced, and the working efficiency is improved.
As an optimized scheme, the embodiment provides the first arc-shaped member 21 with the first left pressing portion 214 and the first right pressing portion 215 which are symmetrically distributed, and the first left pressing portion 214 and the first right pressing portion 215 are connected into a whole through the first connecting portion 216; accordingly, the second arc-shaped member 22 is provided with the second left pressing portion 224 and the second right pressing portion 225 which are symmetrically distributed, and the second left pressing portion 224 and the second right pressing portion 225 are connected into a whole through the second connecting portion 226. In practical application, the radius of the first connecting portion 216 and the second connecting portion 226 is smaller than the radius of the first left pressing portion 214, the first right pressing portion 215, the second left pressing portion 224 and the second right pressing portion 225, so as to form an air channel at the periphery of the first connecting portion 216 and the second connecting portion 226, and the left sealing cover 3 is sleeved on the first left pressing portion 214 and the second left pressing portion 224, and the right sealing cover 3' is sleeved on the first right pressing portion 215 and the second right pressing portion 225, so that two independent sealing structures are formed, and the plugging reliability is enhanced. Meanwhile, the present embodiment forms a vent hole between the adjacent first connection portion 216 and second connection portion 226, and provides a pipe joint 14 communicating with the inner cavity of the support rod 1 at the left end thereof. The structure is arranged in the plugging process, the hose and related detection instruments (pressure gauges and the like) are connected to the pipe joint 14, whether the left sealing cover 3 and the right sealing cover 3' leak or not can be accurately judged according to the air pressure change, air can be exhausted and diffused in time during leakage, and the functionality and the safety are improved. At this time, the left guide groove 13 and the right guide groove 13' play both a guiding role and a ventilating role.
As a specific embodiment, the present invention adopts the following sliding seal structure for the left and right slip rings 4 and 4': two left sealing grooves 42 are arranged on the inner wall of the left slip ring 4, and a left sealing ring is arranged in the left sealing groove 42; two right sealing grooves 42 ' are arranged on the inner wall of the right slip ring 4 ', and a right sealing ring is arranged in the right sealing groove 42 '. It should be noted that the left and right seal grooves 42 and 42' are not limited to two, and may be provided with one or three. In order to improve the reliability of sealing, the support rod 1 is provided with a left annular table 15 at a position between the left sliding ring 4 and the left guide groove 13, and a left sealing gasket 16 is embedded at the left side of the left annular table 15; similarly, the support rod 1 is provided with a right annular platform 15 ' at a position between the right sliding ring 4 ' and the right guide groove 13 ', and a right sealing gasket 16 ' is embedded at the right side of the right annular platform 15 '. The structure is arranged to enable the left sliding ring 4 and the right sliding ring 4 'to be correspondingly extruded on the left sealing gasket 16 and the right sealing gasket 16' during plugging, and the sealing performance of plugging can be effectively enhanced.
In the present invention, the following sealing and fixing methods are adopted for the left slip ring 4 and the left sealing cover 3 as specific embodiments: the left pressure plate 43 is fixed on the left side of the left slip ring 4 through screws distributed along the circumferential direction, so that the left end of the left sealing cover 3 is squeezed between the left slip ring 4 and the left pressure plate 43. The device has the characteristics of reliable sealing and convenient assembly and disassembly. Similarly, the embodiment adopts the same sealing and fixing manner for the right sliding ring 4 'and the right sealing cover 3': the right pressure plate 43 ' is fixed to the right side of the right slip ring 4 ' by screws, so that the right end of the right boot seal 3 ' is pressed between the right slip ring 4 ' and the right pressure plate 43 '. As a specific embodiment, the invention has the structure that the left sealing cover 3 is provided with the left expansion joint 31, and the outer wall of the left sealing cover 3 at the position corresponding to the expansion ring 2 is provided with the left grooves 32 which are distributed at intervals; the right sealing cover 3 'is provided with a right expansion joint 31', and the right sealing cover 3 'is provided with right grooves 32' distributed at intervals on the outer wall at the position corresponding to the expansion ring 2. According to the structure, the left telescopic joint 31 and the right telescopic joint 31 'are arranged, so that the tensile deformation capacity and the adaptability of the left sealing cover 3 and the right sealing cover 3' are correspondingly improved, and the plugging reliability of the left sealing cover 3 and the right sealing cover 3 'is correspondingly improved by arranging the left groove 32 and the right groove 32'.
In practical application, the invention generally enables the motor 11 and the blocking disk 12 to be connected with the support rod 1 by flanges for convenient assembly and disassembly, and enables the first arc-shaped part 21 and the second arc-shaped part 22 to be respectively provided with four parts for simplifying the structure. It should be noted that the first arc-shaped part 21 and the second arc-shaped part 22 are not limited to four, and may be three or more than five as required.
The above examples are only for describing the preferred embodiments of the present invention, and do not limit the scope of the claimed invention, and various modifications made by those skilled in the art according to the technical solutions of the present invention should fall within the scope of the invention defined by the claims without departing from the design concept of the present invention.
Claims (8)
1. A double-seal pipeline plugging device comprises a support rod (1), an expansion ring (2), a left seal cover (3) and a right seal cover (3 '), and is characterized in that the support rod (1) is of a tubular structure, a motor (11) and a plugging disc (12) are correspondingly and hermetically fixed at the left end and the right end of the support rod (1), a left sliding ring (4) and a right sliding ring (4') are sleeved on the support rod (1), a sliding seal structure is arranged between the left sliding ring (4) and the support rod (1) and between the right sliding ring (4 ') and the support rod (1), a transmission mechanism connected with the motor (11) is arranged in the support rod (1), the transmission mechanism drives the left sliding ring (4) and the right sliding ring (4') to reversely slide, the expansion ring (2) is formed by combining a first arc-shaped piece (21) and a second arc-shaped piece (22) which are alternately distributed, guide surfaces (211) which are inwards inclined and symmetrically distributed are arranged at the two ends of the first arc-shaped piece (21), a sliding groove (212) is arranged on the guide surface (211), guide holes (213) are arranged on two side walls of the sliding groove (212), the guide holes (213) on the adjacent first arc-shaped parts (21) are splayed, a support lug (221) is arranged in the middle of the inner side of the second arc-shaped part (22), the support lug (221) is hinged with the left sliding ring (4) and the right sliding ring (4 ') through symmetrically distributed connecting rods (5), sliding blocks (222) matched with the sliding groove (212) are arranged at two ends of the second arc-shaped part (22), guide posts (223) positioned in the guide holes (213) are arranged at two sides of each sliding block (222), the left end of the left sealing cover (3) is fixedly connected with the left sliding ring (4) in a sealing manner, the right end of the left sealing cover (3) is sleeved on the expansion ring (2) and fixedly connected with the first arc-shaped parts (21), and the right end of the right sealing cover (3 ') is fixedly connected with the right sliding ring (4 ') in a sealing manner, the left end of the right sealing cover (3') is sleeved on the expansion ring (2) and is fixedly connected with the first arc-shaped part (21);
the transmission mechanism comprises a lead screw (6), a left-handed nut (7) and a right-handed nut (7 '), the lead screw (6) is arranged in the support rod (1) through a bearing and is connected with the motor (11), the left-handed nut (7) and the right-handed nut (7') are screwed on the lead screw (6), the left-handed nut (7) is provided with left lug plates (71) which are symmetrically distributed, the left lug plates (71) extend out of a left guide groove (13) on the support rod (1), the right-handed nut (7 ') is provided with right lug plates (71') which are symmetrically distributed, the right lug plates (71 ') extend out of a right guide groove (13') on the support rod (1), the left guide groove (13) and the right guide groove (13 ') are positioned between the left sealing cover (3) and the right sealing cover (3'), the right side of the left slip ring (4) is provided with a left push-pull rod (41 ') connected with the left lug plates (71'), and the left slip ring (4 ') is provided with a right push-pull rod (41'); first arc (21) are including first left extrusion portion (214) and first right extrusion portion (215) of symmetric distribution, and first left extrusion portion (214) and first right extrusion portion (215) link as an organic wholely through first connecting portion (216), second arc (22) are including second left extrusion portion (224) and the right extrusion portion of second (225) of symmetric distribution, and second left extrusion portion (224) and the right extrusion portion of second (225) link as an organic wholely through second connecting portion (226), form the air vent between adjacent first connecting portion (216) and second connecting portion (226), the left end of bracing piece (1) is equipped with coupling (14) rather than the inner chamber intercommunication.
2. The dual-seal pipe plugging device according to claim 1, wherein said left sliding ring (4) is provided with a left seal groove (42) on its inner wall, a left seal ring is provided in said left seal groove (42), said right sliding ring (4 ') is provided with a right seal groove (42 ') on its inner wall, and a right seal ring is provided in said right seal groove (42 ').
3. The double sealed pipe stopper according to claim 2, wherein the support bar (1) is provided with a left ring stand (15) at a position between the left slip ring (4) and the left guide groove (13), a left gasket (16) is embedded at the left side of the left ring stand (15), a right ring stand (15 ') is provided at a position between the right slip ring (4 ') and the right guide groove (13 ') with the support bar (1), and a right gasket (16 ') is embedded at the right side of the right ring stand (15 ').
4. Double seal pipe plugging device according to claim 3, wherein said left slide ring (4) is left pressure plate (43) fixed to the left side by screws, said left seal cover (3) is pressed at its left end between said left slide ring (4) and said left pressure plate (43), said right slide ring (4 ') is right pressure plate (43 ') fixed to the right side by screws, and said right seal cover (3 ') is pressed at its right end between said right slide ring (4 ') and said right pressure plate (43 ').
5. The dual-seal pipeline plugging device according to claim 3, wherein said left sealing cover (3) is provided with a left expansion joint (31), the outer wall of the left sealing cover (3) corresponding to the expansion ring (2) is provided with left grooves (32) distributed at intervals, said right sealing cover (3 ') is provided with a right expansion joint (31'), and the outer wall of the right sealing cover (3 ') corresponding to the expansion ring (2) is provided with right grooves (32') distributed at intervals.
6. The dual-sealed pipe sealer according to claim 3, wherein two guide posts (223) are provided at both sides of the slider (222), respectively, and a bushing is fitted over the guide posts (223).
7. The double-sealed pipeline plugging device according to claim 3, wherein said motor (11) and plugging disc (12) are connected to the support rod (1) by flanges respectively, the motor (11) is provided with a hinge seat, and said left sealing cover (3) and right sealing cover (3') are made of rubber.
8. Double sealed pipe sealers according to claim 3, wherein there are four of said first (21) and second (22) arc-shaped members, respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210275721.8A CN114526395B (en) | 2022-03-21 | 2022-03-21 | Double-seal pipeline plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210275721.8A CN114526395B (en) | 2022-03-21 | 2022-03-21 | Double-seal pipeline plugging device |
Publications (2)
| Publication Number | Publication Date |
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| CN114526395B true CN114526395B (en) | 2022-08-23 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003329191A (en) * | 2002-05-14 | 2003-11-19 | Cosmo Koki Co Ltd | Chip recovering device in continuously-supplied water cutting off device |
| KR20110033326A (en) * | 2009-09-25 | 2011-03-31 | 강남석 | A interception appartus for pipeline fluid-crossing gate |
| CN106499908A (en) * | 2016-12-15 | 2017-03-15 | 福州市水务管网维护有限公司 | A kind of expansion type pipe plugging head and its main body mechanism |
| CN111810762A (en) * | 2020-07-06 | 2020-10-23 | 北京天兴燃气工程有限公司 | Pipeline plugging device |
| CN215173242U (en) * | 2021-06-30 | 2021-12-14 | 江苏高华流体控制有限公司 | Pipeline pinhole leaking stoppage fixture |
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2022
- 2022-03-21 CN CN202210275721.8A patent/CN114526395B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003329191A (en) * | 2002-05-14 | 2003-11-19 | Cosmo Koki Co Ltd | Chip recovering device in continuously-supplied water cutting off device |
| KR20110033326A (en) * | 2009-09-25 | 2011-03-31 | 강남석 | A interception appartus for pipeline fluid-crossing gate |
| CN106499908A (en) * | 2016-12-15 | 2017-03-15 | 福州市水务管网维护有限公司 | A kind of expansion type pipe plugging head and its main body mechanism |
| CN111810762A (en) * | 2020-07-06 | 2020-10-23 | 北京天兴燃气工程有限公司 | Pipeline plugging device |
| CN215173242U (en) * | 2021-06-30 | 2021-12-14 | 江苏高华流体控制有限公司 | Pipeline pinhole leaking stoppage fixture |
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| CN114526395A (en) | 2022-05-24 |
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