CN114636044A - Self-guide flow gas pipeline plugging device - Google Patents
Self-guide flow gas pipeline plugging device Download PDFInfo
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- CN114636044A CN114636044A CN202210275735.XA CN202210275735A CN114636044A CN 114636044 A CN114636044 A CN 114636044A CN 202210275735 A CN202210275735 A CN 202210275735A CN 114636044 A CN114636044 A CN 114636044A
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- ring
- sealing cover
- guide
- arc
- support rod
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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
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
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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
- F16L55/07—Arrangement or mounting of devices, e.g. valves, for venting or aerating or draining
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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
- F16L55/12—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ
- F16L55/124—Means for stopping flow from or in pipes or hoses by introducing into the pipe a member expandable in situ introduced radially into the pipe or hose
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention relates to a self-flow-guiding gas pipeline plugging device, which comprises a supporting rod, an expansion ring, a left sealing cover and a right sealing cover, wherein a motor and a plugging disc are correspondingly fixed at two ends of the supporting rod, a left sliding ring and a right sliding ring are arranged on the supporting rod, a transmission mechanism and a flow guide pipe are arranged in the supporting rod, the transmission mechanism enables the left sliding ring and the right sliding ring to reversely slide, the expansion ring is composed of a first arc-shaped part and a second arc-shaped part which are alternately distributed, guide surfaces are arranged at two ends of the first arc-shaped part, sliding grooves are arranged on the guide surfaces, guide holes are arranged on the side walls of the sliding grooves, the guide holes on the adjacent first arc-shaped part are in a splayed shape, the second arc-shaped part 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 columns in the guide holes are arranged at two sides of the sliding blocks, and two ends of the left sealing cover are correspondingly connected with the left sliding ring and the expansion ring, and two ends of the right sealing cover are correspondingly connected with the right slip ring and the expansion ring. 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 self-guide gas pipeline plugging device for tapping plugging operation.
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 that present field adopted mainly carries out gas pipeline shutoff through the expansion cylinder, and it has the following problem: the equal-diameter hole needs to be formed, otherwise, the plugging cannot be realized, and the difficulty and the workload for forming the equal-diameter hole are relatively 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 pressure can not be taken and released, so that the safety is influenced; 3. the plugging driving is carried out through external power, so that the control difficulty is increased; 4. 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 self-flow-guiding gas pipeline plugging device which has the advantages of compact structure, sensitive action, reliable plugging and strong adaptability.
In order to solve the problems in the prior art, the invention provides a self-guide gas pipeline plugging device, which comprises a support rod, an expansion ring, a left sealing cover and a right sealing cover, wherein the support rod is of a tubular structure, the left end and the right end of the support rod are correspondingly and hermetically fixed with a motor and a plugging disc, the support rod is sleeved with a left sliding ring and a right sliding ring, a sealing 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, the transmission mechanism drives the left sliding ring and the right sliding ring to reversely slide, a guide pipe is also arranged in the support rod, the left end of the guide pipe is connected with a first pipe joint on the support rod, the right end of the guide pipe penetrates through the plugging disc and enables the plugging disc to be hermetically matched with the support rod, the expansion ring is formed by combining a first arc-shaped piece and a second arc-shaped piece which are alternately distributed, two ends of the first arc-shaped piece are provided with guide surfaces which are inwards inclined and symmetrically distributed, the guide mechanism comprises a guide surface, a sliding groove is arranged on the guide surface, guide holes are formed in two side walls of the sliding groove, the guide holes in adjacent first arc-shaped parts are splayed, the middle of each second arc-shaped part is hinged to a left sliding ring and a right sliding ring through symmetrically distributed connecting rods, sliding blocks matched with the sliding grooves are arranged at two ends of each second arc-shaped part, guide columns in the guide holes are arranged on two sides of each sliding block, the left end of a left sealing cover is fixedly connected with the left sliding ring in a sealing mode, the right end of a left sealing cover is sleeved on an expansion ring and fixedly connected with the first arc-shaped parts, the right end of a 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 parts.
Further, the self-flow-guiding gas 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 sealing cover and a right sealing cover, the right side of the left sliding ring is provided with a left push-pull rod connected with the left lug plates, and the left side of the right sliding ring is provided with a right push-pull rod connected with the right lug plates.
Further, the self-flow-guiding gas pipeline plugging device comprises a first arc-shaped piece, a second arc-shaped piece and a supporting rod, wherein the first arc-shaped piece 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 piece 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 second pipe joint communicated with an inner cavity of the supporting rod is arranged at the left end of the supporting rod.
Further, the self-guide flow gas pipeline plugging device is characterized in that a left sealing groove is formed in the inner wall of the left sliding ring, a right sealing groove is formed in the inner wall of the right sliding ring, and sealing rings are respectively installed in the left sealing groove and the right sealing groove.
Further, the self-flow-guiding gas 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 self-flow-guiding gas pipeline plugging device is characterized in that a left pressure plate is fixed to the left side of the left sliding ring through a screw, the left end of the left sealing cover is extruded between the left sliding ring and the left pressure plate, a right pressure plate is fixed to the right side of the right sliding ring through a screw, and the right end of the right sealing cover is extruded between the right sliding ring and the right pressure plate.
Further, the self-flow-guiding gas 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 self-flow-guiding gas 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 self-flow-guiding gas 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.
Furthermore, the invention discloses a self-flow-guiding gas pipeline plugging device, wherein the number of the first arc-shaped parts and the number of the second arc-shaped parts are four respectively.
Compared with the prior art, the self-guide flow gas pipeline plugging device has the following advantages: the invention is provided with a support rod, an expansion ring, a left sealing cover and a right sealing cover, so that the support rod adopts a tubular structure, the left end and the right end of the support rod correspond to a sealing fixed motor and a plugging disc, a left sliding ring and a right sliding ring are sleeved on the support rod, a 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, a flow guide pipe is arranged in the support rod, the left end of the flow guide pipe is connected with a first pipe joint on the support rod, and the right end of the flow guide pipe penetrates through the plugging disc and is in sealing fit with the plugging disc; the expansion ring adopts a structure formed by combining first arc-shaped parts and second arc-shaped parts which are alternately distributed, guide surfaces which are inwards inclined and symmetrically distributed are arranged at two ends of each first arc-shaped part, sliding grooves are arranged on the guide surfaces, guide holes are arranged on two side walls of each sliding groove, the guide holes on the adjacent first arc-shaped parts form a splayed shape, the middle part of each second arc-shaped part is respectively hinged with a left sliding ring and a right sliding ring through connecting rods which are symmetrically distributed, sliding blocks matched with the sliding grooves are arranged at two ends of each second arc-shaped part, and guide columns in the guide holes are arranged at two sides of each sliding block; let the left end and the sealed fixed connection of left sliding ring of left sealed cowling, with the right-hand member cover of left sealed cowling on the expansion ring and with first arc fixed connection, let the right-hand member and the sealed fixed connection of right sliding ring of right sealed cowling, with the left end cover of right sealed cowling on the expansion ring and with first arc fixed connection. Therefore, the self-flow-guiding double-sealing gas pipeline plugging device based on electric drive 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. According to the invention, the flow guide pipe is arranged in the support rod, so that self-flow guide is realized, the first pipe joint is connected with the hose and the related detection instrument during plugging, on one hand, the pressure of the gas pipeline can be taken, the detection and control accuracy is improved, on the other hand, the gas can be diffused when needed, and the safety is improved; the double-channel sealing structure consisting of 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 atress equilibrium and action sensitivity, can effectively avoid the jamming phenomenon.
The self-guiding gas pipeline plugging device of the invention is described in detail with reference to the specific embodiments shown in the accompanying drawings.
Drawings
FIG. 1 is a front view of a self-channeling gas pipe block 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 self-channeling gas pipe block 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 self-channeling gas pipeline block of the present invention;
FIG. 6 is a second isometric view of a self-channeling gas conduit block of the present invention;
FIG. 7 is a front view of the present invention with the expansion ring in an expanded state;
FIG. 8 is a left side view of the expansion ring of the present invention in an expanded state;
FIG. 9 is an isometric view of the expansion ring of the present invention 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 a first isometric view of the invention with the expansile loop in a contracted configuration;
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 with reference to the accompanying 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, the embodiment of the self-guiding gas pipeline plugging device of the present invention comprises a support rod 1, an expansion ring 2, a left sealing cover 3 and a right sealing cover 3'. The supporting rod 1 is made to be of a tubular structure, the left end and the right end of the supporting rod are correspondingly sealed and fixed with the motor 4 and the plugging disc 5, the supporting rod 1 is sleeved with the left sliding ring 6 and the right sliding ring 6 ', sealing structures are arranged between the left sliding ring 6 and the supporting rod 1 and between the right sliding ring 6 ' and the supporting rod 1, a transmission mechanism connected with the motor 4 is arranged in the supporting rod 1, the transmission mechanism drives the left sliding ring 6 and the right sliding ring 6 ' to reversely slide, the flow guide pipe 7 is arranged in the supporting rod 1, the left end of the flow guide pipe 7 is connected with the first pipe joint 11 on the supporting rod 1, and the right end of the flow guide pipe 7 penetrates through the plugging disc 5 and enables the two to be in sealing fit. The expansion ring 2 is made of a structure formed by combining first arc-shaped parts 21 and second arc-shaped parts 22 which are alternately distributed, wherein two ends of each first arc-shaped part 21 are provided with guide surfaces which are inwards inclined and symmetrically distributed, each guide surface is provided with a sliding groove 211, two side walls of each sliding groove 211 are provided with guide holes 212, each guide hole 212 on the adjacent first arc-shaped part 21 is in a splayed shape, the middle part of each second arc-shaped part 22 is hinged with the left sliding ring 6 and the right sliding ring 6' through connecting rods 8 which are symmetrically distributed, two ends of each second arc-shaped part 22 are provided with sliding blocks 221 matched with the sliding grooves 211, and two sides of each sliding block 221 are provided with guide columns 222 positioned in the guide holes 212. The left end of the left sealing cover 3 is fixedly connected with the left sliding ring 6 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 6 ' in a sealing manner, 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.
Through the structure, the self-flow-guiding double-sealing gas pipeline plugging device based on electric drive is formed. In practical application, firstly, the left sliding ring 6 and the right sliding ring 6 'slide towards two sides through the motor 4 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 6 and the right sliding ring 6 'slide towards the middle through the motor 4 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 gas pipeline after the expansion ring 2 is unfolded in place, so that the plugging purpose is realized. According to the invention, the flow guide pipe 7 is arranged in the support rod 1, so that self-flow guide is realized, and the first pipe joint 11 is connected with the hose and related detection instruments (such as a pressure gauge) during plugging, so that on one hand, pressure can be taken from a gas pipeline, the detection and control accuracy is improved, and on the other hand, gas can be diffused when needed, and the safety is improved; by arranging the first arc-shaped parts 21 and the second arc-shaped parts 22 which are alternately distributed on the expansion ring 2 and forming the guide holes 212 on the adjacent first arc-shaped parts 21 into a splayed shape, under the double limit matching of the sliding block 221 and the sliding groove 211 as well as the guide columns 222 and the guide holes 212, the first arc-shaped parts 21 and the second arc-shaped parts 22 can relatively slide and expand or contract the expansion ring 2 only by pushing the left sliding ring 6 and the right sliding ring 6', and the expansion ring has the characteristics of simple structure and convenient operation and control; by arranging the double-channel sealing structure consisting of the left sliding ring 6, the left sealing cover 3, the expansion ring 2, the right sealing cover 3 'and the right sliding ring 6', the plugging reliability is improved; through setting up motor 4 and drive mechanism, realized the shutoff from the drive, reduced the control degree of difficulty, order about left sliding ring 6 and right sliding ring 6' synchronous reverse slip through drive mechanism, improved the equilibrium of atress and the sensitivity of action, can effectively avoid the jamming phenomenon. 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 on the motor 4, and the structure and the working principle of the stopper machine are well known to those skilled in the art. In order to ensure the structural stability and the plugging reliability, the end of the second arc-shaped part 22 is attached to the guide surface of the first arc-shaped part 21; in order to improve the motion sensitivity, the invention generally arranges two guide posts 222 at two sides of the sliding block 221 at intervals, and sleeves are sleeved on the guide posts 222 to realize stable guide; in order to ensure the flexible deformation capacity, the left sealing cover 3 and the right sealing cover 3' are made of rubber.
In the present embodiment, as an optimized configuration, the screw 41, the left-handed nut 42 and the right-handed nut 42 'are provided in the transmission mechanism, the screw 41 is mounted in the support rod 1 via a bearing and connected to the output shaft of the motor 4, and the left-handed nut 42 and the right-handed nut 42' are screwed to the screw 41. The left-handed nut 42 is provided with left lug plates 43 which are symmetrically distributed, the left lug plates 43 extend out of the left guide groove 12 on the support rod 1, the right-handed nut 42 'is provided with right lug plates 43' which are symmetrically distributed, the right lug plates 43 'extend out of the right guide groove 12' on the support rod 1, and the left guide groove 12 and the right guide groove 12 'are positioned between the left sealing cover 3 and the right sealing cover 3'. The right side of the left slip ring 6 is connected with the left ear plate 43 through a left push-pull rod 61, and the left side of the right slip ring 6 ' is connected with the right ear plate 43 ' through a right push-pull rod 61 '. The transmission mechanism has the characteristics of compact structure, stable action and good synchronism, and through arranging the left guide groove 12 and the right guide groove 12 ' and the left-handed nut 42, the right-handed nut 42 ', the left push-pull rod 61 and the right push-pull rod 61 ' at the position between the left sealing cover 3 and the right sealing cover 3 ', on one hand, the reliability of the sliding seal of the left sliding ring 6 and the right sliding ring 6 ' 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 the opening is favorably reduced, the opening difficulty is reduced, and the working efficiency is improved.
As an optimized solution, the present embodiment provides the first arc-shaped member 21 with the first left pressing portion 213 and the first right pressing portion 214 which are symmetrically distributed, and connects the first left pressing portion 213 and the first right pressing portion 214 into a whole through the first connecting portion 215; accordingly, the second arc-shaped member 22 is provided with the second left pressing portion 223 and the second right pressing portion 224 which are symmetrically distributed, and the second left pressing portion 223 and the second right pressing portion 224 are connected into a whole through the second connecting portion 225. In practical application, the radii of the first connecting portion 215 and the second connecting portion 225 are smaller than the radii of the first left pressing portion 213, the first right pressing portion 214, the second left pressing portion 223 and the second right pressing portion 224, so that air passages are formed at the peripheries of the first connecting portion 215 and the second connecting portion 225, the left sealing cover 3 is sleeved on the first left pressing portion 213 and the second left pressing portion 223, and the right sealing cover 3' is sleeved on the first right pressing portion 214 and the second right pressing portion 224, 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 and second connection portions 215 and 225, and provides a second pipe joint 13 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 second pipe joint 13, whether the left sealing cover 3 and the right sealing cover 3' leak or not can be accurately judged according to air pressure changes, air can be exhausted and diffused in time when the air leaks, and the functionality and the safety are improved. At this time, the left guide groove 12 and the right guide groove 12' play both a guiding role and a ventilating role.
As a specific embodiment, the invention adopts the following sliding sealing structure for the left sliding ring 6 and the right sliding ring 6': two left sealing grooves 62 are formed in the inner wall of the left slip ring 6, two right sealing grooves 62 ' are formed in the inner wall of the right slip ring 6 ', and sealing rings are respectively installed in the left sealing groove 62 and the right sealing groove 62 '. It should be noted that the left seal groove 62 and the right seal groove 62' are not limited to two, and may be provided with one or more than three. In order to improve the reliability of sealing, the support rod 1 is provided with a left annular table 14 between the left sliding ring 6 and the left guide groove 12, and a left sealing gasket 15 is embedded on the left side of the left annular table 14; similarly, the support rod 1 is provided with a right annular platform 14 ' at a position between the right sliding ring 6 ' and the right guide groove 12 ', and a right sealing gasket 15 ' is embedded at the right side of the right annular platform 14 '. The structure is arranged to enable the left sliding ring 6 and the right sliding ring 6 'to be correspondingly extruded on the left sealing gasket 15 and the right sealing gasket 15' 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 sealing cover 3 and the left slip ring 6 as specific embodiments: the left pressure plate 63 is fixed on the left side of the left slip ring 6 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 6 and the left pressure plate 63. The device has the characteristics of reliable sealing and convenient assembly and disassembly. Similarly, the embodiment adopts the same sealing and fixing mode for the right sealing cover 3 'and the right sliding ring 6': the right pressure plate 63 ' is fixed on the right side of the right slip ring 6 ' through screws distributed along the circumferential direction, so that the right end of the right sealing cover 3 ' is pressed between the right slip ring 6 ' and the right pressure plate 63 '. 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 motor 4 and the plugging disc 5 are connected with the support rod 1 by flanges so as to be convenient to disassemble and assemble; in order to simplify the structure, the present invention provides four first arc-shaped members 21 and four second arc-shaped members 22, respectively. However, 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 according to actual needs.
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 solution of the present invention without departing from the design concept of the present invention shall fall within the scope of the present invention defined by the claims.
Claims (10)
1. A self-flow-guiding gas pipeline plugging device comprises a support rod (1), an expansion ring (2), a left sealing cover (3) and a right sealing cover (3 '), and is characterized in that the support rod (1) is of a tubular structure, a motor (4) and a plugging disc (5) are correspondingly and hermetically fixed at the left end and the right end of the support rod (1), a left sliding ring (6) and a right sliding ring (6') are sleeved on the support rod (1), a sealing structure is arranged between the left sliding ring (6) and the support rod (1) and between the right sliding ring (6 ') and the support rod (1), a transmission mechanism connected with the motor (4) is arranged in the support rod (1), the transmission mechanism drives the left sliding ring (6) and the right sliding ring (6') to reversely slide, a flow guide pipe (7) is further arranged in the support rod (1), the left end of the flow guide pipe (7) is connected with a first pipe joint (11) on the support rod (1), and the right end of the flow guide pipe (7) penetrates through the plugging disc (5) and enables the two to be hermetically matched, the expansion ring (2) is formed by combining a first arc-shaped part (21) and a second arc-shaped part (22) which are alternately distributed, guide surfaces which are inwards inclined and symmetrically distributed are arranged at two ends of the first arc-shaped part (21), sliding grooves (211) are arranged on the guide surfaces, guide holes (212) are arranged on two side walls of each sliding groove (211), the guide holes (212) on the adjacent first arc-shaped parts (21) are splayed, the middle part of each second arc-shaped part (22) is respectively hinged with a left sliding ring (6) and a right sliding ring (6') through symmetrically distributed connecting rods (8), sliding blocks (221) matched with the sliding grooves (211) are arranged at two ends of each second arc-shaped part (22), guide columns (222) positioned in the guide holes (212) are arranged at two sides of each sliding block (221), the left end of the left sealing cover (3) is fixedly connected with the left sliding ring (6) in a sealing manner, and 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), the right end of the right sealing cover (3 ') is fixedly connected with the right sliding ring (6 ') in a sealing mode, 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).
2. The self-guide gas pipeline plugging device according to claim 1, wherein the transmission mechanism comprises a lead screw (41), a left-handed nut (42) and a right-handed nut (42 '), the lead screw (41) is installed in the support rod (1) through a bearing and connected with the motor (4), the left-handed nut (42) and the right-handed nut (42') are screwed on the lead screw (41), the left-handed nut (42) is provided with left ear plates (43) which are symmetrically distributed, the left ear plates (43) extend from left guide grooves (12) on the support rod (1), the right-handed nut (42 ') is provided with right ear plates (43') which are symmetrically distributed, the right ear plates (43 ') extend from right guide grooves (12') on the support rod (1), the left guide grooves (12) and the right guide grooves (12 ') are positioned between the left sealing cover (3) and the right sealing cover (3'), the right side of the left sliding ring (6) is provided with a left push-pull rod (61) connected with the left ear plates (43), and a right push-pull rod (61 ') connected with a right lug plate (43 ') is arranged on the left side of the right slip ring (6 ').
3. The self-guide gas pipeline plugging device according to claim 2, wherein the first arc-shaped member (21) comprises a first left extrusion portion (213) and a first right extrusion portion (214) which are symmetrically distributed, the first left extrusion portion (213) and the first right extrusion portion (214) are connected into a whole through a first connecting portion (215), the second arc-shaped member (22) comprises a second left extrusion portion (223) and a second right extrusion portion (224) which are symmetrically distributed, the second left extrusion portion (223) and the second right extrusion portion (224) are connected into a whole through a second connecting portion (225), a vent hole is formed between the adjacent first connecting portion (215) and the second connecting portion (225), and the left end of the support rod (1) is provided with a second pipe joint (13) communicated with the inner cavity of the support rod.
4. The self-diversion gas pipeline plugging device according to claim 3, wherein a left sealing groove (62) is arranged on the inner wall of the left sliding ring (6), a right sealing groove (62 ') is arranged on the inner wall of the right sliding ring (6 '), and sealing rings are respectively arranged in the left sealing groove (62) and the right sealing groove (62 ').
5. The self-guide gas pipeline plugging device according to claim 4, wherein the support rod (1) is provided with a left ring platform (14) at a position between the left sliding ring (6) and the left guide groove (12), a left sealing gasket (15) is embedded at the left side of the left ring platform (14), the support rod (1) is provided with a right ring platform (14 ') at a position between the right sliding ring (6 ') and the right guide groove (12 '), and a right sealing gasket (15 ') is embedded at the right side of the right ring platform (14 ').
6. The self-conductance gas pipeline plugging device according to claim 5, wherein the left side of said left slip ring (6) is fixed with a left pressure plate (63) by screws, the left end of said left sealing cover (3) is compressed between the left slip ring (6) and the left pressure plate (63), the right side of said right slip ring (6 ') is fixed with a right pressure plate (63 ') by screws, and the right end of said right sealing cover (3 ') is compressed between the right slip ring (6 ') and the right pressure plate (63 ').
7. The self-flow-guiding gas pipeline plugging device according to claim 6, 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.
8. The self-guide gas pipeline plugging device according to claim 7, wherein two guide posts (222) are respectively arranged at intervals on both sides of the sliding block (221), and a bushing is sleeved on each guide post (222).
9. The self-flow-guiding gas pipeline plugging device according to claim 7, wherein the motor (4) and the plugging disc (5) are respectively connected with the support rod (1) through flanges, the motor (4) is provided with a hinge seat, and the left sealing cover (3) and the right sealing cover (3') are made of rubber.
10. A self-diverting gas pipe closure according to claim 7, characterized in that there are four of said first (21) and second (22) arc-shaped elements.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210275735.XA CN114636044A (en) | 2022-03-21 | 2022-03-21 | Self-guide flow gas pipeline plugging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210275735.XA CN114636044A (en) | 2022-03-21 | 2022-03-21 | Self-guide flow gas pipeline plugging device |
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| Publication Number | Publication Date |
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| CN114636044A true CN114636044A (en) | 2022-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210275735.XA Withdrawn CN114636044A (en) | 2022-03-21 | 2022-03-21 | Self-guide flow gas pipeline plugging device |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115468058A (en) * | 2022-07-27 | 2022-12-13 | 北京燃气昌平有限公司 | Double-plugging device for gas pipeline |
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| CN115468058A (en) * | 2022-07-27 | 2022-12-13 | 北京燃气昌平有限公司 | Double-plugging device for gas pipeline |
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Application publication date: 20220617 |