CN114636043A - Double-seal gas pipeline plugging device based on electric drive - Google Patents
Double-seal gas pipeline plugging device based on electric drive Download PDFInfo
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- CN114636043A CN114636043A CN202210275629.1A CN202210275629A CN114636043A CN 114636043 A CN114636043 A CN 114636043A CN 202210275629 A CN202210275629 A CN 202210275629A CN 114636043 A CN114636043 A CN 114636043A
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- sealing
- sliding ring
- ring
- sealing cover
- plugging
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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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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
- Sealing Devices (AREA)
Abstract
The invention relates to an electrically-driven double-seal gas pipeline plugging device, which comprises a steering component and a plugging component, wherein the steering component comprises a first supporting rod, a steering sliding ring and a steering push-pull rod, the plugging component comprises a second supporting rod, the sealing device comprises an expansion ring, a left sealing cover, a right sealing cover and a motor, wherein the motor is hinged with a first supporting rod and a steering push-pull rod, a left sliding ring and a right sliding ring are arranged on a second supporting rod, a plugging transmission mechanism connected with the motor is arranged in the second supporting rod, the plugging transmission mechanism drives the left sliding ring and the right sliding ring to reversely slide, a flow guide pipe is further arranged in the second supporting rod, the expansion ring is formed by combining a first arc-shaped part and a second arc-shaped part which are alternately distributed, the left end of the left sealing cover is 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 connected with the first arc-shaped part, the right end of the right sealing cover is 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 connected with the first arc-shaped part. The plugging 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 an electrically-driven double-sealing gas pipeline plugging device.
Background
In the process of connecting, cutting and changing the gas pipe network, the operation of opening holes and plugging is frequently needed. 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 pipeline plugging device, such as the patent application with publication number CN212929168U, 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 steering mechanism is driven by external power, and the steering action and the plugging action are realized by the same mechanism, 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 an electrically-driven double-seal 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 an electrically-driven double-seal gas pipeline plugging device, which comprises a steering component and a plugging component, wherein the steering component comprises a first supporting rod and a steering sliding ring sleeved on the first supporting rod, the first supporting rod is of a tubular structure, a steering transmission mechanism connected with the steering sliding ring is arranged in the first supporting rod, a steering push-pull rod is hinged on the left side of the steering sliding ring, the plugging component comprises a second supporting rod, an expansion ring, a left sealing cover and a right sealing cover, the second supporting rod is of a tubular structure, a motor and a plugging disc are correspondingly and fixedly sealed on the left and right ends of the second supporting rod, the left end of the motor is hinged with the lower end of the first supporting rod, the upper side of the motor is hinged with the steering push-pull rod, the second supporting rod is sleeved with the left sliding ring and the right sliding ring, and sealing structures are arranged between the left sliding ring and the right sliding ring and the second supporting rod, the second support bar is provided with a plugging transmission mechanism connected with a motor, the plugging transmission mechanism drives the left sliding ring and the right sliding ring to reversely slide, the second support bar is also provided with a guide pipe, the left end of the guide pipe is connected with a first pipe joint on the second support bar, the right end of the guide pipe penetrates through the plugging disc and enables the plugging disc and the plugging disc to be in sealing fit, 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, two side walls of each sliding groove are provided with guide holes, the guide holes on the adjacent first arc-shaped parts are in a splayed shape, the middle parts of the second arc-shaped parts are respectively hinged with the left sliding ring and the right sliding ring through symmetrically distributed connecting rods, two ends of each second arc-shaped part are provided with sliding blocks matched with the sliding grooves, two sides of the sliding blocks are provided with guide columns positioned in the guide holes, the left end of the left sealing cover is fixedly connected with the left sealing and the left sealing ring in a sealing manner, 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.
Furthermore, the invention relates to an electrically-driven double-seal gas pipeline plugging device, wherein the steering transmission mechanism comprises a lead screw and a transmission nut which is screwed on the lead screw, the lead screw is installed in a first supporting rod through a bearing, the transmission nut is provided with wing plates which are symmetrically distributed, and the wing plates extend out of a vertical guide groove on the first supporting rod and are fixedly connected with a steering sliding ring.
Furthermore, the invention relates to an electrically-driven double-seal gas pipeline plugging device, wherein the plugging transmission mechanism comprises a lead screw, a left-handed nut and a right-handed nut, the lead screw is installed in a second support rod through a bearing and is 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 second 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 second 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 sliding ring is provided with a left push-pull rod connected with the left lug plate, and the left side of the right sliding ring is provided with a right push-pull rod connected with the right lug plate.
Further, the invention relates to an electrically-driven double-seal gas pipeline plugging device, wherein the first arc-shaped member 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 member 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 second support rod is arranged at the left end of the second support rod.
Further, the invention relates to an electrically-driven double-seal gas pipeline plugging device, wherein a left seal groove is formed in the inner wall of the left sliding ring, a right seal groove is formed in the inner wall of the right sliding ring, and seal rings are respectively installed in the left seal groove and the right seal groove.
Furthermore, the invention relates to an electrically-driven double-seal gas pipeline plugging device, wherein a left ring table is arranged at a position of the second support rod between the left sliding ring and the left guide groove, a left sealing gasket is embedded at the left side of the left ring table, a right ring table is arranged at a position of the second support rod between the right sliding ring and the right guide groove, and a right sealing gasket is embedded at the right side of the right ring table.
Further, the invention relates to an electrically-driven double-seal gas pipeline plugging device, wherein a left pressure plate is fixed on 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 on 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 invention relates to an electrically-driven double-seal gas pipeline plugging device, wherein a left sealing cover is provided with a left telescopic joint, the outer wall of the position, corresponding to an 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 discloses an electrically-driven double-seal 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.
Furthermore, the invention relates to an electrically-driven double-seal gas pipeline plugging device, wherein the motor and the plugging disc are respectively connected with a second support rod through flanges, the left sealing cover and the right sealing cover are made of rubber, and 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 electrically-driven double-seal gas pipeline plugging device has the following advantages: according to the invention, by arranging the steering assembly and the plugging assembly, the steering assembly is provided with a first support rod and a steering sliding ring sleeved on the first support rod, the first support rod is of a tubular structure, a steering transmission mechanism connected with the steering sliding ring is arranged in the first support rod, and the left side of the steering sliding ring is hinged with a steering push-pull rod; the plugging assembly is provided with a second support rod, an expansion ring, a left sealing cover and a right sealing cover, the second support rod is also of a tubular structure, the left end and the right end of the second support rod are correspondingly sealed and fixed with a motor and a plugging disc, the left end of the motor is hinged with the lower end of a first support rod, the upper side of the motor is hinged with a steering push-pull rod, a left sliding ring and a right sliding ring are sleeved on the second support rod, a sealing structure is arranged between the left sliding ring and the second support rod, a plugging transmission mechanism connected with the motor is arranged in the second support rod, the plugging transmission mechanism drives the left sliding ring and the right sliding ring to reversely slide, a flow guide pipe is arranged in the second support rod, the left end of the flow guide pipe is connected with a first pipe joint on the second 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 a first arc-shaped part and a second arc-shaped part which are alternately distributed, wherein two ends of the first arc-shaped part are provided with guide surfaces which are inwards inclined and symmetrically distributed, a sliding groove is arranged on each guide surface, guide holes are arranged on two side walls of each sliding groove, the guide holes on the adjacent first arc-shaped parts are splayed, the middle part of the second arc-shaped part is respectively hinged with a left sliding ring and a right sliding ring through connecting rods which are symmetrically distributed, two ends of the second arc-shaped part are provided with sliding blocks matched with the sliding grooves, and two sides of each sliding block are provided with guide columns positioned in the guide holes; 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 double-sealing self-diversion 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 plugging transmission mechanism, so that the expansion ring, the left sealing cover and the right sealing cover are in a contraction state, and the second supporting rod is coaxial with the first supporting rod by moving downwards to the sliding ring; and then the first support rod and the second support rod are gradually moved downwards from the opening of the gas pipeline from top to bottom, the steering slip ring is gradually moved upwards in the downward moving process so as to steer the second support rod, after the second support rod moves downwards and is steered to the right, the left slip ring and the right slip ring slide towards the middle through the motor and the plugging 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 stretched to the right, so that the plugging purpose is realized. According to the invention, the steering mechanism consisting of the first support rod, the steering slip ring and the steering push-pull rod is arranged, and the hinge points at the two ends of the steering push-pull rod deviate from the axis of the first support rod, so that the steering purpose can be realized only by moving the steering slip ring up and down, the structure is simplified, the occupied space is reduced, and the control convenience is improved; the flow guide pipe is arranged in the second support rod, so that self-flow guide is realized, the first pipe joint is connected with the hose and a related detection instrument during plugging, on one hand, pressure can be taken from the gas pipeline, the detection and control accuracy is improved, on the other hand, 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 shutoff drive mechanism, realized turning to the independent control of action and shutoff action, reduced the control degree of difficulty, order about left sliding ring and the synchronous reverse slip of right sliding ring through shutoff drive mechanism, improved atress equilibrium and action sensitivity, can effectively avoid the jamming phenomenon.
The invention relates to an electrically driven double-seal gas pipeline plugging device, which is described in detail below with reference to the specific embodiment shown in the accompanying drawings.
Drawings
Fig. 1 is a front view of an electrically driven based dual-seal gas pipeline plugging device of the present invention;
FIG. 2 is a first perspective view of an electrically driven based dual seal gas pipeline plugging device of the present invention;
FIG. 3 is an axonometric view of a double-seal gas pipeline plugging device based on electric drive of the invention
FIG. 4 is a view taken along line A-A of FIG. 1;
FIG. 5 is a front view of the occluding component of the present invention;
FIG. 6 is a view taken along line B-B of FIG. 5;
FIG. 7 is a top view of the plugging assembly of the present invention;
FIG. 8 is a view taken along line C-C of FIG. 7;
FIG. 9 is a first isometric view of the occluding component of the present invention;
FIG. 10 is an isometric view of a second occluding component of the present invention;
FIG. 11 is an elevational view of the expansion ring of the present invention in an expanded condition;
FIG. 12 is a left side view of the expansion ring of the present invention in an expanded state;
FIG. 13 is an isometric view of the expansion ring of the present invention in an expanded condition;
FIG. 14 is a second isometric view of the expansion ring of the present invention in its expanded configuration;
FIG. 15 is an elevational view of the expansile loop of the present invention in a contracted state;
FIG. 16 is a left side elevational view of the expansile loop of the present invention in a contracted configuration;
FIG. 17 is an isometric view I of the expansion ring of the present invention in a contracted condition;
FIG. 18 is an isometric view two of the expansion loop of the present invention in a contracted condition;
fig. 19 is a right side view of a first arcuate member of the present invention;
fig. 20 is an isometric view of a first arcuate member of the present invention;
fig. 21 is an isometric view two of the first arcuate member of the present invention;
fig. 22 is a right side view of a second arcuate member of the present invention;
figure 23 is an isometric view one of a second arcuate member of the present invention;
fig. 24 is an isometric view of a second arcuate member of the present invention;
in which the left and right seal cups are hidden from view in fig. 11-18 to show the expansion rings and their connection.
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 24, the invention relates to an embodiment of an electrically driven double-sealing gas pipeline plugging device, which comprises a steering assembly and a plugging assembly. The steering assembly is provided with a first support rod 1 and a steering sliding ring 11 sleeved on the first support rod 1, the first support rod 1 is of a tubular structure, a steering transmission mechanism connected with the steering sliding ring 11 is arranged in the first support rod 1, and the left side of the steering sliding ring 11 is hinged with a steering push-pull rod 12. The plugging assembly is provided with a second support rod 2, an expansion ring 3, a left sealing cover 4 and a right sealing cover 4'. The second support rod 2 is also of a tubular structure, the left end and the right end of the second support rod are correspondingly and hermetically fixed with the motor 5 and the plugging disc 6, the left end of the motor 5 is hinged with the lower end of the first support rod 1, the upper side of the motor 5 is hinged with the steering push-pull rod 12, the second support rod 2 is sleeved with the left sliding ring 7 and the right sliding ring 7 ', a sealing structure is arranged between the left sliding ring 7 and the right sliding ring 7 ' and the second support rod 2, the plugging transmission mechanism connected with the motor 5 is arranged in the second support rod 2, the plugging transmission mechanism drives the left sliding ring 7 and the right sliding ring 7 ' to reversely slide, the second support rod 2 is internally provided with the guide pipe 8, the left end of the guide pipe 8 is connected with the first pipe joint 21 on the second support rod 2, and the right end of the guide pipe 8 penetrates through the plugging disc 6 and is hermetically matched with the plugging disc 6. The expansion ring 3 adopts a structure formed by combining first arc-shaped pieces 31 and second arc-shaped pieces 32 which are alternately distributed, guide surfaces which are inclined inwards and symmetrically distributed are arranged at two ends of each first arc-shaped piece 31, sliding grooves 311 are arranged on the guide surfaces, guide holes 312 are arranged on two side walls of each sliding groove 311, and the guide holes 312 on the adjacent first arc-shaped pieces 31 are in a splayed shape; the middle part of the second arc-shaped part 32 is hinged with the left slip ring 7 and the right slip ring 7' respectively through the symmetrically distributed connecting rods 9, the two ends of the second arc-shaped part 32 are provided with the sliding blocks 321 matched with the sliding grooves 311, and the two sides of the sliding blocks 321 are provided with the guide posts 322 positioned in the guide holes 312. The left end of the left sealing cover 4 is fixedly connected with the left sliding ring 7 in a sealing way, and the right end of the left sealing cover 4 is sleeved on the expansion ring 3 and is fixedly connected with the first arc-shaped part 31; the right end of the right sealing cover 4 ' is fixedly connected with the right sliding ring 7 ' in a sealing manner, and the left end of the right sealing cover 4 ' is sleeved on the expansion ring 3 and is fixedly connected with the first arc-shaped part 31.
Through the structure arrangement, the double-seal self-flow-guiding gas pipeline plugging device based on electric drive is formed. In practical application, firstly, the left sliding ring 7 and the right sliding ring 7 'slide towards two sides through the motor 5 and the plugging transmission mechanism, so that the expansion ring 3, the left sealing cover 4 and the right sealing cover 4' are in a contraction state, and the second support rod 2 is coaxial with the first support rod 1 by moving downwards to the sliding ring 11; and then the first support rod 1 and the second support rod 2 are gradually moved downwards from the opening of the gas pipeline from top to bottom, the steering slide ring 11 is moved upwards in the downward moving process to enable the second support rod 2 to steer, after the downward movement and the steering are in place, the left slide ring 7 and the right slide ring 7 'are enabled to slide towards the middle through the motor 5 and the plugging transmission mechanism, and when the expansion ring 3 is in place, the left sealing cover 4 and the right sealing cover 4' can be tightly extruded on the inner wall of the gas pipeline, so that the plugging purpose is realized. According to the invention, the steering mechanism consisting of the first support rod 1, the steering slip ring 11 and the steering push-pull rod 12 is arranged, the hinge points at two ends of the steering push-pull rod 12 are deviated from the axis of the first support rod 1, and the steering purpose can be realized only by moving the steering slip ring 11 up and down, so that the structure is simplified, the occupied space is reduced, and the control convenience is improved; by arranging the first arc-shaped parts 31 and the second arc-shaped parts 32 which are alternately distributed on the expansion ring 3 and forming the guide holes 312 on the adjacent first arc-shaped parts 31 into a splayed shape, under the double limit matching of the sliding block 321, the sliding groove 311 and the guide post 322 and the guide holes 312, the first arc-shaped parts 31 and the second arc-shaped parts 32 can relatively slide and expand or contract the expansion ring 3 only by pushing the left sliding ring 7 and the right sliding ring 7', and the expansion ring has the characteristics of simple structure and convenient operation and control; the flow guide pipe 8 is arranged in the second support rod 2, so that self-flow guide is realized, the first pipe joint 21 is connected with a hose and a related detection instrument (such as a pressure gauge) during plugging, on one hand, pressure can be taken from a gas pipeline, the detection and control accuracy is improved, on the other hand, gas can be diffused when needed, and the safety is improved; by arranging the double-channel sealing structure consisting of the left sliding ring 7, the left sealing cover 4, the expansion ring 3, the right sealing cover 4 'and the right sliding ring 7', the plugging reliability is improved; through setting up motor 5 and shutoff drive mechanism, realized turning to the independent control of action and shutoff action, reduced the control degree of difficulty, order about left sliding ring 7 and right sliding ring 7' synchronous reverse slip through shutoff drive mechanism, improved atress equilibrium and action sensitivity, can effectively avoid the jamming phenomenon. It should be noted that the plugging device is used by being mounted on the lifting mechanism of the plugging machine through the first support rod, and the structure and the working principle of the plugging machine are well known to those skilled in the art. In order to ensure the structural stability and the plugging reliability, the end part of the second arc-shaped part 32 is attached to the guide surface of the first arc-shaped part 31; in order to improve the action sensitivity, the invention generally arranges two guide posts 322 at two sides of the sliding block 321 at intervals, and sleeves are sleeved on the guide posts 322 to realize stable guide; in order to ensure the flexible deformation capability, the left sealing cover 4 and the right sealing cover 4' are made of rubber materials.
As an optimized scheme, the specific embodiment enables the steering transmission mechanism to adopt the following structure: the steering slide ring device comprises a screw rod 13 and a transmission nut 14 which is screwed on the screw rod 13, wherein the screw rod 13 is installed in the first supporting rod 1 through a bearing, the transmission nut 14 is provided with wing plates 15 which are symmetrically distributed, and the wing plates 15 extend out of a vertical guide groove 16 on the first supporting rod 1 and are fixedly connected with the steering slide ring 11. The steering transmission mechanism has the characteristics of simple structure, small occupied space and stable action. Preferably, the plugging transmission mechanism of the present embodiment is provided with a screw rod 51, a left-handed nut 52 and a right-handed nut 52 ', the screw rod 51 is mounted in the second support rod 2 through a bearing and connected to the output shaft of the motor 5, and the left-handed nut 52 and the right-handed nut 52' are screwed on the screw rod 51. The left-hand nut 52 is provided with left lug plates 53 which are symmetrically distributed, and the left lug plates 53 are extended from the left guide groove 22 on the second support rod 2, the right-hand nut 52 'is provided with right-hand lug plates 53' which are symmetrically distributed, and the right lug plates 53 'are extended from the right guide groove 22' on the second support rod 2, and the left guide groove 22 and the right guide groove 22 'are positioned between the left seal cover 4 and the right seal cover 4'. The right side of the left slip ring 7 is connected with the left ear plate 53 through a left push-pull rod 71, and the left side of the right slip ring 7 ' is connected with the right ear plate 53 ' through a right push-pull rod 71 '. The arranged plugging transmission mechanism has the characteristics of compact structure, stable action and good synchronism, and the left guide groove 22, the right guide groove 22 ', the left-handed nut 52, the right-handed nut 52 ', the left push-pull rod 71 and the right push-pull rod 71 ' are arranged between the left sealing cover 4 and the right sealing cover 4 ', so that on one hand, the sliding sealing reliability of the left sliding ring 7 and the right sliding ring 7 ' is ensured, the axial length of the plugging assembly 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 solution, the present embodiment provides the first arc-shaped member 31 with the first left pressing portion 313 and the first right pressing portion 314 which are symmetrically distributed, and connects the first left pressing portion 313 and the first right pressing portion 314 into a whole through the first connecting portion 315; accordingly, the second arc-shaped member 32 is provided with the second left pressing portion 323 and the second right pressing portion 324 which are symmetrically distributed, and the second left pressing portion 323 and the second right pressing portion 324 are connected into a whole by the second connecting portion 325. In practical application, the radii of the first connecting portion 315 and the second connecting portion 325 are smaller than the radii of the first left pressing portion 313, the first right pressing portion 314, the second left pressing portion 323 and the second right pressing portion 324, so that air passages are formed at the peripheries of the first connecting portion 315 and the second connecting portion 325, the left sealing cover 4 is sleeved on the first left pressing portion 313 and the second left pressing portion 323, and the right sealing cover 4' is sleeved on the first right pressing portion 314 and the second right pressing portion 324, 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 connecting portion 315 and second connecting portion 325, and provides a second pipe joint 23 at the left end of the second support rod 2 to communicate with the inner cavity 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 23, whether the left sealing cover 4 and the right sealing cover 4' leak or not can be accurately judged according to the air pressure change, 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 22 and the right guide groove 22' 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 slip ring 7 and the right slip ring 7': two left sealing grooves 72 are formed in the inner wall of the left slip ring 7, two right sealing grooves 72 ' are formed in the inner wall of the right slip ring 7 ', and sealing rings are respectively installed in the left sealing groove 72 and the right sealing groove 72 '. It should be noted that the left seal groove 72 and the right seal groove 72' are not limited to two, and may be provided with one or more than three. In order to improve the reliability of the sealing, the second support rod 2 is provided with a left annular table 24 at a position between the left slip ring 7 and the left guide groove 22, and a left sealing gasket 25 is embedded at the left side of the left annular table 24; similarly, the second support rod 2 is provided with a right annular platform 24 ' at a position between the right slip ring 7 ' and the right guide groove 22 ', and a right sealing gasket 25 ' is embedded at the right side of the right annular platform 24 '. The structure is arranged to enable the left sliding ring 7 and the right sliding ring 7 'to be correspondingly extruded on the left sealing gasket 25 and the right sealing gasket 25' 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 4 and the left slip ring 7 as specific embodiments: the left pressure plate 73 is fixed on the left side of the left slip ring 7 through screws distributed along the circumferential direction, so that the left end of the left sealing cover 4 is squeezed between the left slip ring 7 and the left pressure plate 73. The device has the characteristics of reliable sealing and convenient assembly and disassembly. Similarly, the present embodiment adopts the same sealing and fixing manner for the right sealing cover 4 'and the right sliding ring 7': the right end of the right sealing cover 4 ' is pressed between the right slip ring 7 ' and the right pressure plate 73 ' by fixing the right pressure plate 73 ' on the right side of the right slip ring 7 ' through screws distributed along the circumferential direction. As a specific embodiment, the left sealing cover 4 is provided with a left expansion joint 41, and the outer wall of the left sealing cover 4 at the position corresponding to the expansion ring 3 is provided with left grooves 42 which are distributed at intervals; the right sealing cover 4 'is provided with a right telescopic joint 41', and the right sealing cover 4 'is provided with right grooves 42' distributed at intervals on the outer wall of the position corresponding to the expansion ring 3. The structure correspondingly improves the tensile deformation capability and the adaptability of the left sealing cover 4 and the right sealing cover 4 'by arranging the left telescopic joint 41 and the right telescopic joint 41', and correspondingly improves the plugging reliability of the left sealing cover 4 and the right sealing cover 4 'by arranging the left groove 42 and the right groove 42'. In practical application, the invention generally enables the motor 5 and the plugging disc 6 to be connected with the second support rod 2 by flanges so as to be convenient to disassemble and assemble. The present invention provides four first arc-shaped members 31 and four second arc-shaped members 32, respectively, for the simplification of the structure. However, it should be noted that the first arc-shaped part and the second arc-shaped part are not limited to be provided with four, and may be provided with 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 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 (10)
1. A double-seal gas pipeline plugging device based on electric drive is characterized by comprising a steering component and a plugging component, wherein the steering component comprises a first supporting rod (1) and a steering sliding ring (11) sleeved on the first supporting rod (1), the first supporting rod (1) is of a tubular structure, a steering transmission mechanism connected with the steering sliding ring (11) is arranged in the first supporting rod, a steering push-pull rod (12) is hinged to the left side of the steering sliding ring (11), the plugging component comprises a second supporting rod (2), an expansion ring (3), a left sealing cover (4) and a right sealing cover (4'), the second supporting rod (2) is of a tubular structure, a motor (5) and a plugging disc (6) are correspondingly and hermetically fixed to the left end and the right end of the second supporting rod, the left end of the motor (5) is hinged to the lower end of the first supporting rod (1), the upper side of the motor (5) is hinged to the steering push-pull rod (12), a left sliding ring (7) and a right sliding ring (7 ') are sleeved on the second supporting rod (2), a sealing structure is arranged between the left sliding ring (7) and the second supporting rod (2) and between the right sliding ring (7 ') and the second supporting rod (2), a plugging transmission mechanism connected with a motor (5) is arranged in the second supporting rod (2), the plugging transmission mechanism drives the left sliding ring (7) and the right sliding ring (7 ') to reversely slide, a guide pipe (8) is further arranged in the second supporting rod (2), the left end of the guide pipe (8) is connected with a first pipe connector (21) on the second supporting rod (2), the right end of the guide pipe (8) penetrates through a plugging disc (6) and enables the plugging disc and the plugging disc to be in sealing fit, an expansion ring (3) is formed by combining first arc-shaped pieces (31) and second arc-shaped pieces (32) which are alternately distributed, guide surfaces which are inwards inclined and symmetrically distributed are arranged at two ends of the first arc-shaped pieces (31), and sliding grooves (311) are arranged on the guide surfaces, the two side walls of the sliding groove (311) are provided with guide holes (312), the guide holes (312) in the adjacent first arc-shaped pieces (31) are splayed, the middle parts of the second arc-shaped pieces (32) are hinged to the left sliding ring (7) and the right sliding ring (7 ') through symmetrically distributed connecting rods (9), two ends of the second arc-shaped pieces (32) are provided with sliding blocks (321) matched with the sliding groove (311), two sides of each sliding block (321) are provided with guide columns (322) located in the guide holes (312), the left end of the left sealing cover (4) is fixedly connected with the left sliding ring (7) in a sealing mode, the right end of the left sealing cover (4) is sleeved on the expansion ring (3) and is fixedly connected with the first arc-shaped pieces (31), the right end of the right sealing cover (4') is fixedly connected with the right sliding ring (7 ') in a sealing mode, and the left end of the right sealing cover (4') is sleeved on the expansion ring (3) and is fixedly connected with the first arc-shaped pieces (31).
2. The electrically driven based double sealing gas pipeline plugging device according to claim 1, wherein said steering transmission mechanism comprises a lead screw (13) and a transmission nut (14) screwed on the lead screw (13), the lead screw (13) is installed in the first supporting rod (1) through a bearing, the transmission nut (14) is provided with symmetrically distributed wing plates (15), the wing plates (15) are extended from the vertical guide groove (16) on the first supporting rod (1) and are fixedly connected with the steering slip ring (11).
3. The double-sealing gas pipeline plugging device based on electric drive according to claim 1, wherein the plugging transmission mechanism comprises a lead screw (51), a left-handed nut (52) and a right-handed nut (52 '), the lead screw (51) is installed in the second support rod (2) through a bearing and connected with the motor (5), the left-handed nut (52) and the right-handed nut (52') are screwed on the lead screw (51), the left-handed nut (52) is provided with left ear plates (53) symmetrically distributed, the left ear plates (53) protrude from left guide grooves (22) on the second support rod (2), the right-handed nut (52 ') is provided with right ear plates (53') symmetrically distributed, the right ear plates (53 ') protrude from right guide grooves (22') on the second support rod (2), the left guide grooves (22) and the right guide grooves (22 ') are positioned between the left sealing cover (4) and the right sealing cover (4'), the right side of the left slip ring (7) is provided with a left push-pull rod (71) connected with the left ear plate (53), and the left side of the right slip ring (7 ') is provided with a right push-pull rod (71 ') connected with the right ear plate (53 ').
4. The dual sealing gas pipeline blocking device based on electric drive as claimed in claim 3, wherein the first arc-shaped member (31) comprises a first left pressing portion (313) and a first right pressing portion (314) which are symmetrically distributed, the first left pressing portion (313) and the first right pressing portion (314) are connected into a whole through a first connecting portion (315), the second arc-shaped member (32) comprises a second left pressing portion (323) and a second right pressing portion (324) which are symmetrically distributed, the second left pressing portion (323) and the second right pressing portion (324) are connected into a whole through a second connecting portion (325), a vent hole is formed between the adjacent first connecting portion (315) and the second connecting portion (325), and the left end of the second support rod (2) is provided with a second pipe joint (23) which is communicated with the inner cavity thereof.
5. The electrically driven based dual sealing gas pipeline plugging device according to claim 4, wherein said left sliding ring (7) is provided with a left sealing groove (72) on its inner wall, said right sliding ring (7 ') is provided with a right sealing groove (72 ') on its inner wall, and sealing rings are installed in said left sealing groove (72) and said right sealing groove (72 '), respectively.
6. The electrically driven based dual sealing gas pipeline plugging device according to claim 5, wherein said second support rod (2) is provided with a left collar (24) at a position between the left slip ring (7) and the left guide groove (22), a left sealing gasket (25) is embedded at the left side of the left collar (24), the second support rod (2) is provided with a right collar (24 ') at a position between the right slip ring (7 ') and the right guide groove (22 '), and a right sealing gasket (25 ') is embedded at the right side of the right collar (24 ').
7. The electrically driven based dual sealing gas pipeline plugging device according to claim 6, wherein a left pressure plate (73) is fixed to the left side of said left sliding ring (7) by screws, the left end of said left sealing cover (4) is compressed between the left sliding ring (7) and the left pressure plate (73), a right pressure plate (73 ') is fixed to the right side of said right sliding ring (7 ') by screws, and the right end of said right sealing cover (4 ') is compressed between the right sliding ring (7 ') and the right pressure plate (73 ').
8. The electrically driven based double sealing gas pipeline plugging device according to claim 6, wherein said left sealing cover (4) is provided with a left expansion joint (41), the outer wall of the corresponding position of the left sealing cover (4) and the expansion ring (3) is provided with left grooves (42) distributed at intervals, said right sealing cover (4 ') is provided with a right expansion joint (41'), and the outer wall of the corresponding position of the right sealing cover (4 ') and the expansion ring (3) is provided with right grooves (42') distributed at intervals.
9. The double-sealing gas pipeline plugging device based on electric drive as claimed in claim 6, wherein two guiding studs (322) are respectively provided at both sides of said sliding block (321) at intervals, and a bushing is sleeved on the guiding studs (322).
10. The double sealing gas pipeline plugging device based on electric drive as claimed in claim 6, wherein said motor (5) and plugging disc (6) are respectively connected with the second support rod (2) by flanges, said left and right sealing covers (4, 4') are made of rubber, and said first and second arc-shaped members (31, 32) are respectively provided with four.
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| CN202210275629.1A CN114636043B (en) | 2022-03-21 | 2022-03-21 | Double-seal gas pipeline plugging device based on electric drive |
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| CN202210275629.1A CN114636043B (en) | 2022-03-21 | 2022-03-21 | Double-seal gas pipeline plugging device based on electric drive |
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| CN114636043B CN114636043B (en) | 2022-09-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115451232A (en) * | 2022-07-27 | 2022-12-09 | 北京燃气昌平有限公司 | Self-adaptive gas pipeline plugging device |
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| CN104595622A (en) * | 2015-01-06 | 2015-05-06 | 绵阳新晨动力机械有限公司 | Quick choke plug of pipeline |
| CN111810761A (en) * | 2020-07-06 | 2020-10-23 | 北京天兴燃气工程有限公司 | Pipeline plugging device |
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| FR2682450A1 (en) * | 1991-10-09 | 1993-04-16 | Gaz De France | METHOD AND DIPOSITIVE OF PROVISIONAL INTRODUCTION OF AN APPARATUS INTO AN UNDERGROUND PIPING |
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| CN103277627A (en) * | 2013-05-30 | 2013-09-04 | 中国石油大学(北京) | Spherical dual-seal plugging device |
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| CN115451232A (en) * | 2022-07-27 | 2022-12-09 | 北京燃气昌平有限公司 | Self-adaptive gas pipeline plugging device |
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| CN114636043B (en) | 2022-09-16 |
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