CN110653983A - Port plugging device for production of thermal insulation pipe and use method thereof - Google Patents
Port plugging device for production of thermal insulation pipe and use method thereof Download PDFInfo
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- CN110653983A CN110653983A CN201911043784.5A CN201911043784A CN110653983A CN 110653983 A CN110653983 A CN 110653983A CN 201911043784 A CN201911043784 A CN 201911043784A CN 110653983 A CN110653983 A CN 110653983A
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- clamping body
- sealing ring
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 30
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000009413 insulation Methods 0.000 title claims description 25
- 238000007789 sealing Methods 0.000 claims abstract description 106
- 230000001681 protective effect Effects 0.000 claims abstract description 44
- 238000004321 preservation Methods 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims description 20
- 230000005540 biological transmission Effects 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 5
- 239000012774 insulation material Substances 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 2
- 238000007906 compression Methods 0.000 claims description 2
- 229920005830 Polyurethane Foam Polymers 0.000 abstract description 17
- 239000011496 polyurethane foam Substances 0.000 abstract description 17
- 229920002635 polyurethane Polymers 0.000 abstract description 8
- 239000004814 polyurethane Substances 0.000 abstract description 8
- 239000000945 filler Substances 0.000 description 5
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000005574 cross-species transmission Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/02—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles for articles of definite length, i.e. discrete articles
- B29C44/12—Incorporating or moulding on preformed parts, e.g. inserts or reinforcements
- B29C44/18—Filling preformed cavities
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/35—Component parts; Details or accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C44/00—Shaping by internal pressure generated in the material, e.g. swelling or foaming ; Producing porous or cellular expanded plastics articles
- B29C44/34—Auxiliary operations
- B29C44/35—Component parts; Details or accessories
- B29C44/351—Means for preventing foam to leak out from the foaming device during foaming
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
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- Thermal Insulation (AREA)
Abstract
The invention provides a port plugging device for production of a heat-insulating pipe and a use method thereof, belonging to the technical field of production of the heat-insulating pipe, wherein the port plugging device for production of the heat-insulating pipe comprises two plugging components arranged at two ends of an outer protective pipe, each plugging component comprises a clamping body, a first sealing ring and a second sealing ring, the clamping body is clamped on the outer wall of a working pipe and is provided with a clamping hole for the working pipe to pass through, the first sealing ring is fixedly arranged on the hole wall of the clamping hole and is used for radially compressing the working pipe and hermetically connecting the working pipe, and the second sealing ring is fixedly arranged on the side surface of the clamping body and is used for axially compressing and hermetically connecting the end surface of the outer protective pipe; the port plugging device for the production of the heat preservation pipe and the use method thereof can effectively seal the annular gap between the end face of the outer protective pipe and the working pipe when polyurethane foam is filled in the production of the polyurethane heat preservation pipeline, improve the production efficiency and the product quality, and simultaneously reduce the production cost.
Description
Technical Field
The invention belongs to the technical field of production of thermal insulation pipes, and particularly relates to a port plugging device for production of a thermal insulation pipe and a using method thereof.
Background
The polyurethane heat-insulating pipeline, especially the socket type polyurethane heat-insulating pipeline, is convenient to install, convenient to construct and low in cost, and is widely applied to the fields of urban centralized heat supply, factory waste heat transmission, cold water heat insulation, hot spring water conveying and the like. The polyurethane heat-insulating pipeline comprises an inner-layer working pipe, an outer protection pipe sleeved outside the working pipe and a polyurethane heat-insulating layer filled between the working pipe and the outer protection pipe, and after the working pipe and the outer protection pipe are well supported during manufacturing, polyurethane foam needs to be injected into a gap between the outer wall of the working pipe and the inner wall of the outer protection pipe from a filling hole formed in the outer protection pipe to form the heat-insulating layer; when polyurethane foam filling was filled, the annular gap between outer pillar terminal surface and the working tube can't effectively be sealed, and polyurethane injection pressure is great in addition, and polyurethane foam can spill over from outer pillar both ends, need cut, polish and clear up excessive polyurethane foam after filling the completion, had both increased work load, had reduced work efficiency, had wasted polyurethane material again.
Disclosure of Invention
The invention aims to provide a port plugging device for production of a heat-insulating pipe and a using method thereof, and aims to solve the problem that an annular gap between the end face of an outer protecting pipe and a working pipe cannot be effectively sealed when polyurethane foam is filled in production of a polyurethane heat-insulating pipeline.
In order to achieve the purpose, the technical scheme adopted by the invention is that the port plugging device for the production of the heat preservation pipe comprises two plugging components arranged at two ends of an outer protective pipe, wherein each plugging component comprises a clamping body, a first sealing ring and a second sealing ring;
the clamping body is clamped on the outer wall of the working pipe and is provided with a clamping hole for the working pipe to pass through;
the first sealing ring is fixedly arranged on the wall of the clamping hole and used for radially pressing the working pipe and being in sealing connection with the working pipe;
the second sealing ring is fixedly arranged on the side surface of the clamping body and used for axially compressing the end surface of the outer protective pipe and being in sealing connection with the end surface.
As another embodiment of this application, the clamping body includes first semi-ring and second semi-ring, first semi-ring and second semi-ring all are equipped with the link and two the link is rotated and is connected, the clamping body with the help of rotate to connect and open or closed, when the clamping body is closed the inner wall of first semi-ring and second semi-ring docks each other and forms the centre gripping hole.
As another embodiment of the present application, the other ends of the first half ring and the second half ring are both open-close ends, the clamping body is provided with a locking assembly, and the locking assembly is used for fastening and connecting the two open-close ends when the clamping body is closed.
As another embodiment of the present application, the locking assembly includes a screw, a connecting block, and a locking nut;
one end of the screw rod is hinged to the opening and closing end of the first half ring, and the screw rod rotates in a plane perpendicular to the axis of the clamping hole;
the connecting block is fixedly arranged at the opening and closing end of the second semi-ring, a notch groove is formed in the connecting block, and the notch groove is located on the rotating path of the screw and used for being clamped with the screw; and
the locking nut is arranged at the free end of the screw rod and used for clamping the screw rod into the notch groove and then pressing the connecting block, so that the clamping body is closed.
As another embodiment of the present application, a slot into which an end of the outer protection pipe is inserted is disposed on a side surface of the clamping body, and the second sealing ring is fixedly disposed at a bottom of the slot.
As another embodiment of the present application, an opening width of the insertion groove is greater than a wall thickness of the outer protection pipe, and a surface of the bottom of the insertion groove, which is used for being connected with the second sealing ring, is an arc surface.
As another embodiment of this application, port plugging device is used in insulating tube production still include with the clamping component that the clamping body is connected, clamping component is used for the clamping body provides axial force, makes two the outer pillar of clamping body axial clamp.
As another embodiment of the present application, the clamping assembly includes a pulling rope, a rope connecting plate and a supporting force unit;
the number of the pull ropes is multiple, the pull ropes are arranged on the outer side of the outer protective pipe, the first ends of the pull ropes are connected with the first clamping body of the two clamping bodies, and the second ends of the pull ropes extend to the outer side of the second clamping body of the two clamping bodies;
the rope connecting plate is used for connecting the second ends of the pull ropes simultaneously;
the supporting force unit is arranged between the rope connecting plate and the second clamping body and used for providing axial supporting force to enable the second clamping body to compress the end face of the outer protection pipe, and meanwhile, the rope connecting plate and the pull rope are used as the other end, the first clamping body provides axial tension to enable the first clamping body to compress the other end face of the outer protection pipe.
As another embodiment of the present application, the bracing unit includes a force transmission sliding sleeve and a jack;
the force transmission sliding sleeve is sleeved on the working pipe in a sliding manner, and the first end of the force transmission sliding sleeve is used for pushing the second clamping body;
the jack is arranged between the second end of the force transmission sliding sleeve and the rope connecting plate, and two ends of the jack are used for simultaneously pressing the force transmission sliding sleeve and the rope connecting plate, so that the first end of the force transmission sliding sleeve presses the second clamping body, and the rope connecting plate is tightened to the pull rope.
Compared with the prior art, the port plugging device for producing the heat preservation pipe has the advantages that the plugging components are arranged at the two ends of the outer protection pipe and provided with the first sealing ring, the second sealing ring and the clamping body; the clamping body is clamped on the working pipe, and the main body of the clamping body can block an annular gap between the outer protective pipe and the working pipe; meanwhile, the first sealing ring can be tightly hooped on the outer wall of the working pipe to be in sealing connection with the outer wall of the working pipe, so that a gap between the clamping body and the outer wall of the working pipe is effectively sealed; the second sealing ring can axially compress the end surface of the outer protecting pipe, and effectively seals a gap between the clamping body and the end surface of the outer protecting pipe; therefore, in the production of the heat preservation pipe, when polyurethane foam is filled between the outer protective pipe and the working pipe, the two ends of the outer protective pipe are effectively sealed, the filler cannot overflow, the material waste is avoided, auxiliary procedures such as cutting, polishing and cleaning of the overflowing filler are not needed, the workload is reduced, and the efficiency is improved.
The invention also provides a use method of the port plugging device for producing the heat preservation pipe, the annular gap between the end surface of the outer protective pipe and the working pipe is plugged by using the plugging device for producing the heat preservation pipe, and the method comprises the following steps:
sleeving the two clamping bodies on the working pipe respectively and locating at two ends of the outer protective pipe;
pre-tightening the locking assembly to enable the first sealing ring to be attached to the outer wall of the working pipe;
providing axial pressing force for the clamping body, so that the second sealing ring presses the end face of the outer protective pipe and is in sealing connection with the end face;
locking the locking assembly to enable the first sealing ring to hoop the outer wall of the working pipe and be connected with the outer wall in a sealing mode;
injecting a heat insulation material into a gap between the working pipe and the outer protective pipe and forming a heat insulation layer;
and releasing the compression assembly and the locking assembly, and taking the plugging assembly down from the working pipe.
The use method of the port plugging device for producing the heat preservation pipe can conveniently and quickly plug the annular gap between the end surface of the outer protective pipe and the working pipe, and prevent fillers from overflowing, so that the production efficiency and the product quality are improved, and the production cost is reduced.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a port plugging device for producing an insulating tube according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a clamping body in the port plugging device for producing the thermal insulation pipe according to the embodiment of the present invention;
FIG. 3 is an enlarged view at A of FIG. 1;
fig. 4 is a schematic view illustrating that a clamping body in the port plugging device for producing a thermal insulation pipe clamps an outer protection pipe through a pressing assembly according to an embodiment of the present invention.
In the figure: 1. a first seal ring; 2. a second seal ring; 3. a clamping body; 31. a first half ring; 32. a second half ring; 33. a slot; 34. a first clamping body; 35. a second clamping body; 36. an open slot; 4. an outer protecting pipe; 5. a working pipe; 51. a support block; 61. a screw; 62. locking the nut; 63. a notch groove; 71. pulling a rope; 72. a rope connecting plate; 73. a jack; 74. a force transmission sliding sleeve; 711. and (4) clamping the board.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a port plugging device for producing an insulating tube according to the present invention will now be described. The port plugging device for the production of the heat preservation pipe comprises two plugging components arranged at two ends of an outer protective pipe 4, wherein each plugging component comprises a clamping body 3, a first sealing ring 1 and a second sealing ring 2; the clamping body 3 is clamped on the outer wall of the working pipe 5 and is provided with a clamping hole for the working pipe 5 to pass through; the first sealing ring 1 is fixedly arranged on the wall of the clamping hole and used for radially pressing the working pipe 5 and being in sealing connection with the working pipe; the second sealing ring 2 is fixedly arranged on the side surface of the clamping body 3 and used for axially pressing the end surface of the outer protective pipe 4 and being in sealing connection with the outer protective pipe.
Compared with the prior art, the port plugging device for producing the heat preservation pipe has the advantages that the plugging components are arranged at two ends of the outer protection pipe 4 and provided with the first sealing ring 1, the second sealing ring 2 and the clamping body 3; the clamping body 3 is clamped on the working pipe 5, and the main body of the clamping body can block an annular gap between the outer protective pipe 4 and the working pipe 5; meanwhile, the first sealing ring 1 can be tightly hooped on the outer wall of the working pipe 5 to be in sealing connection with the outer wall of the working pipe 5, so that a gap between the clamping body 3 and the outer wall of the working pipe 5 is effectively sealed; the second sealing ring 2 can axially compress the end surface of the outer protecting pipe 4 to effectively seal a gap between the clamping body 3 and the end surface of the outer protecting pipe 4; therefore, in the production of the heat preservation pipe, when polyurethane foam is filled between the outer protective pipe 4 and the working pipe 5, the two ends of the outer protective pipe 4 are effectively sealed, the filler cannot overflow, the material waste is avoided, auxiliary processes such as cutting, polishing and cleaning of the overflowing filler are not needed, the workload is reduced, and the efficiency is improved.
The heat preservation pipe in fig. 1 is a socket type heat preservation pipe, the left end of the working pipe 5 is a socket, the pipe diameter of the socket part is larger than that of the main body of the working pipe 5, and the right end of the working pipe 5 is a socket; during construction, the spigot of one heat-insulating pipe is inserted into the spigot of the other heat-insulating pipe, and the sealing connection of the two pipe fittings can be realized by matching the sealing structure and the accessories at the joint, so that the heat-insulating pipe is convenient and quick. In the existing production process, when polyurethane foam is injected into a gap between the outer protective pipe 4 and the working pipe 5, the condition of the socket end is the same as that shown in fig. 1, and the condition of the socket end is divided into two types: in the case that the pipe diameter of the socket is smaller than that of the outer protecting pipe 4 as shown in fig. 1, the end surface of the outer protecting pipe 4 is aligned with that of the socket, and the annular gap between the outer protecting pipe 4 and the working pipe 5 can be blocked by a blocking ring; the other condition is that the pipe diameter of socket is greater than the pipe diameter of outer pillar 4, and the terminal surface of outer pillar 4 can't pass socket position and the terminal surface alignment of socket, and under this condition, outer pillar 4 generally directly contradicts on the outer wall at socket position. No matter which kind of above condition, all be steel between outer pillar 4 and the working tube 5 and bump the steel and connect, have the gap, unable effective shutoff leads to polyurethane foam to produce under higher injection pressure and overflows. This application is effectively sealed through the terminal surface of the annular space between the outer pillar 4 and the service pipe 5 of centre gripping body 3, first sealing ring 1 and second sealing ring 2, does not have the gap, consequently can effectively prevent that polyurethane foam is excessive.
It should be noted that, the plugging assembly is generally disposed on the main body of the working pipe 5, so that the outer side of the socket cannot directly form an insulating layer in production, and the insulating layer needs to be additionally installed in installation and construction.
Specifically, the first sealing ring 1 and the second sealing ring 2 are made of conventional materials, such as rubber; the inner wall of the clamping body 3, namely the hole wall of the clamping hole, is provided with a mounting groove for mounting the first sealing ring 1, one part of the first sealing ring 1 is embedded and bonded in the mounting groove, and the other part of the first sealing ring protrudes out of the mounting groove and is used for tightly hooping the outer wall of the working pipe 5 to be in sealing connection with the mounting groove; the inner diameter of the first sealing ring 1 is smaller than the outer diameter of the working pipe 5, and the first sealing ring 1 has elasticity and can stretch out and draw back, so that the outer wall of the working pipe 5 can be clamped and connected with the first sealing ring in a sealing mode; the wall of the mounting groove has certain roughness and can be fully contacted with the first sealing ring 1, so that the first sealing ring 1 is stably fixed on the wall of the clamping hole; the clamping body 3 can be provided with an exhaust hole for communicating the gap between the outer protective pipe 4 and the working pipe 5 with the atmosphere and exhausting when injecting polyurethane foam so that the polyurethane foam can be injected smoothly, and the exhaust hole can also be arranged on the pipe walls at the two ends of the outer protective pipe 4; when the exhaust hole is arranged on the clamping body 3, the exhaust hole is arranged on the upper edge of a gap between the outer protective tube 4 and the working tube 5; the filling hole is generally arranged on the pipe wall in the middle of the outer protective pipe 4, polyurethane foam is injected from the filling hole and gradually filled into two ends, and meanwhile, gas in the closed filling space is extruded out from the exhaust hole until the whole filling space is filled; after filling, a small amount of polyurethane foam can overflow from the exhaust hole, and the polyurethane foam is cleaned and scraped, and when the exhaust hole is formed in the outer protective pipe 4, the exhaust hole needs to be plugged; supporting blocks 51 are arranged between the working pipe 5 and the outer protecting pipe 4, the outer protecting pipe 4 can be stably and coaxially sleeved outside the working pipe 5, the supporting blocks 51 are arranged in groups, the number of the supporting blocks is multiple, and the supporting blocks 51 of each group are uniformly distributed in the same plane along the circumferential direction.
Referring to fig. 2, a clamping body 3 includes a first half ring 31 and a second half ring 32, the first half ring 31 and the second half ring 32 are both provided with a connecting end, the two connecting ends are rotatably connected, the clamping body 3 is opened or closed by virtue of the rotational connection, and inner walls of the first half ring 31 and the second half ring 32 are butted with each other to form a clamping hole when the clamping body 3 is closed.
This embodiment provides a specific structure of holding body 3, and holding body 3 formula activity structure as an organic whole, simple structure, convenient to use can with the convenient dismouting of working tube 5. When the device is installed, the clamping body 3 is opened, is clamped on the working pipe 5 and then is closed, and an annular gap between the outer protective pipe 4 and the working pipe 5 is sealed; after use, the clamping body 3 is opened and taken down from the working tube 5. It should be noted that, in the present embodiment, in order to adapt to the specific structure of the clamping body 3, the first sealing ring 1 and the second sealing ring 2 are both composed of two parts and are respectively fixed on the first half ring 31 and the second half ring 32; after the clamping body 3 is closed, the two parts of the first sealing ring 1 and the second sealing ring 2 are respectively and mutually connected in a sealing manner to form a whole, so that gaps between the clamping body 3 and the outer wall of the working pipe 5 and between the outer end faces of the outer protecting pipes 4 can be effectively sealed.
Referring to fig. 2, the other ends of the first half ring 31 and the second half ring 32 are both open ends, and the clamping body 3 is provided with a locking component for fastening and connecting the two open ends when the clamping body 3 is closed. When the clamping body 3 is closed, the opening and closing end is locked by the locking component, so that the first sealing ring 1 can clamp the outer wall of the working pipe 5 and is in sealing connection with the outer wall; after the clamping device is used, the clamping body 3 can be taken down by loosening the locking assembly, and the clamping device is convenient and quick.
As a specific embodiment of the port plugging device for producing the thermal insulation pipe provided by the present invention, please refer to fig. 2, the locking assembly includes a screw 61, a connecting block and a locking nut 62; one end of the screw 61 is hinged to the opening and closing end of the first semi-ring 31, and the screw 61 rotates in a plane perpendicular to the axis of the clamping hole; the connecting block is fixedly arranged at the opening and closing end of the second half ring 32, a notch groove 63 is formed in the connecting block, and the notch groove 63 is located on the rotating path of the screw 61 and used for clamping the screw 61; the locking nut 62 is arranged at the free end of the screw 61, and the locking nut 62 is used for clamping the screw 61 into the notch 63 and then pressing the connecting block to close the clamping body 3. Specifically, the locking nut 62 is a butterfly nut, and two wings of the butterfly nut are provided with insertion holes for insertion rods to pass through so as to tighten the locking nut 62 and ensure that the locking assembly can provide a large enough locking force; the cross section of the notch groove 63 may be circular arc, trapezoidal, rectangular, or the like.
The embodiment provides a specific structure of the locking assembly. During locking, the screw 61 is rotated and clamped into the notch groove 63, and the locking nut 62 is screwed for locking; in the locking process, because the inner diameter of the first sealing ring 1 is slightly smaller than the outer diameter of the working pipe 5, the first half ring 31 and the second half ring 32 are rotated, and when the inner wall of the first sealing ring 1 is attached to the outer wall of the working pipe 5, the opening and closing ends of the first half ring 31 and the second half ring 32 are provided with gaps and are not completely closed; at this time, the locking nut 62 can be continuously screwed, so that the locking nut 62 presses the connecting block, the opening end of the first half ring 31 is pulled to the connecting block, and finally the opening ends of the first half ring 31 and the second half ring 32 are completely closed; at this time, the two parts of the first sealing ring 1 are connected into a whole, the outer wall of the working pipe 5 is tightly hooped and connected with the first sealing ring, and similarly, the two parts of the second sealing ring 2 are also connected into a whole, and the end face of the outer protective pipe 4 can be sealed; when the clamping body 3 is loosened, the locking nut 62 is loosened, the screw 61 is screwed out of the notch 63, and the first half ring 31 and the second half ring 32 are rotated to open the clamping body 3.
Referring to fig. 3, as a specific embodiment of the port plugging device for producing a thermal insulation pipe according to the present invention, a slot 33 into which an end of the outer protection pipe 4 is inserted is disposed on a side surface of the clamping body 3, and the second sealing ring 2 is fixedly disposed at a bottom of the slot 33. The slot 33 can fix the second sealing ring 2, so that the second sealing ring 2 can be firmly fixed on the clamping body 3; meanwhile, the slot 33 can also play a role in clamping the outer protective pipe 4, and the outer protective pipe 4 cannot be easily separated from the slot 33 after being inserted into the slot 33, so that the outer protective pipe can be tightly pressed and hermetically connected with the second sealing ring 2.
As a specific embodiment of the port plugging device for producing a thermal insulation pipe provided by the present invention, please refer to fig. 3, an opening width of the slot 33 is greater than a wall thickness of the outer protection pipe 4, and a surface of the bottom of the slot 33 for connecting with the second sealing ring 2 is an arc surface.
When the first sealing ring 1 and the second sealing ring 2 are in sealing connection with the working pipe 5 and the outer protection pipe 4, if the first sealing ring 1 is required to clamp the working pipe 5 tightly, the second sealing ring 2 presses the end surface of the outer protection pipe 4 tightly, so that the sealing is difficult to realize; therefore, in actual use, after the inner wall of the first sealing ring 1 is attached to the outer wall of the working pipe 5 through the locking assembly, axial pressing force is applied to the clamping body 3, and the second sealing ring 2 presses the end face of the outer protecting pipe 4; at this time, the first sealing ring 1 does not hoop the working pipe 5, and the first sealing ring 1 can move axially; after the second sealing ring 2 is tightly pressed against the end surface of the outer protecting pipe 4, the locking bolt is further tightened, so that the first half ring 31 and the second half ring 32 are completely closed, but at this time, the second sealing ring 2 is tightly pressed against the end surface of the outer protecting pipe 4, the outer protecting pipe 4 is inserted into the slot 33, and the movement of the first half ring 31 and the second half ring 32 causes the relative movement of the second sealing ring 2 and the end surface of the outer protecting pipe 4. The opening width of the slot 33 is greater than the pipe wall of the outer protecting pipe 4, so that not only the end of the outer protecting pipe 4 can be smoothly inserted into the slot 33 when the first half ring 31 and the second half ring 32 are not completely closed, but also the first half ring 31 and the second half ring 32 can rotate at a small angle after the outer protecting pipe 4 is inserted into the slot 33, so that the first sealing ring 1 can clamp the working pipe 5 tightly.
After second sealing ring 2 compressed tightly the tip of outer pillar 4, during first semi-ring 31 and the rotation of second semi-ring 32 low angle, second sealing ring 2 produced relative movement with the tip of outer pillar 4, second sealing ring 2 produced radial distortion under the effect of the 4 tip of outer pillar, slot 33 is the arc with the face of being connected of second sealing ring 2, when can guaranteeing the distortion of second sealing ring 2, still can paste tightly with the bottom of slot 33, guarantee that second sealing ring 2 can keep effectively sealed to the tip of outer pillar 4.
Specifically, the opening end and the bottom end of the slot 33 are in transition through an inclined plane, so that the outer protective pipe 4 can be conveniently inserted into the slot 33.
As a specific embodiment of the port plugging device for producing a thermal insulation pipe provided by the present invention, the port plugging device for producing a thermal insulation pipe further comprises a clamping assembly connected to the clamping bodies 3, and the clamping assembly is configured to provide an axial force to the clamping bodies 3, so that the two clamping bodies 3 axially clamp the outer protection pipe 4. The number of the clamping assemblies can be two, and the clamping bodies 3 are oppositely pressed from the outer sides of the clamping bodies 3 respectively, so that the outer protective pipe 4 is clamped between the two clamping bodies 3; the clamping assembly can be one, and the two clamping bodies 3 are tensioned by using a rope so as to clamp the outer protective pipe 4.
As a specific embodiment of the port plugging device for producing the thermal insulation pipe provided by the present invention, please refer to fig. 4, the clamping assembly includes a pulling rope 71, a connecting rope plate 72 and a supporting unit; the plurality of pulling ropes 71 are arranged on the outer side of the outer protecting pipe 4, the first ends of the pulling ropes 71 are connected with the first clamping bodies 34 in the two clamping bodies 3, and the second ends of the pulling ropes 71 extend to the outer sides of the second clamping bodies 35 in the two clamping bodies 3; the rope connecting plate 72 is used for connecting the second ends of the plurality of pulling ropes 71 at the same time; the supporting force unit is arranged between the connecting rope plate 72 and the second clamping body 35, and is used for providing axial supporting force to enable the second clamping body 35 to compress the end face of the outer protection pipe 4, and meanwhile, the connecting rope plate 72 and the pull rope 71 are used for providing axial pulling force for the first clamping body 34 at the other end to enable the first clamping body to compress the other end face of the outer protection pipe 4.
Specifically, the number of the pull ropes 71 is three, and the pull ropes are uniformly distributed on the first clamping body 34 in the circumferential direction; an open slot 36 is arranged on the clamping body 3, and the pull rope 71 can be radially placed in the open slot 36; a clamping plate 711 is arranged at the first end of the pulling rope 71, after the pulling rope 71 is tensioned, the clamping plate 711 tightly supports against the outer side surface of the first clamping body 34, and the pulling force on the pulling rope 71 is transmitted to the first clamping body 34 to serve as the driving force for the first clamping body 34 to tightly press the end part of the outer protective pipe 4; after the pulling ropes 71 pass through the opening grooves 36 on the second clamping body 35, the second ends of the pulling ropes extend to the outer side of the second clamping body 35, and all the pulling ropes 71 are connected to the rope connecting plate 72; the rope connecting plate 72 can be fixedly connected with the second end of the pulling rope 71, and can also be detachably connected with the second end of the pulling rope 71 by imitating the connecting structure of the clamping plate 711; the both ends of holding power unit are connected with second clamping body 35 and rope connecting plate 72 respectively to provide the holding power, make the interval increase of second clamping body 35 and rope connecting plate 72, thereby taut stay cord 71 in the time of can compressing tightly second clamping body 35, make first clamping body 34 and second clamping body 35 compress tightly the tip of outer pillar 4 from both ends respectively.
As a specific embodiment of the port plugging device for producing a thermal insulation pipe provided by the present invention, please refer to fig. 4, the supporting unit includes a force transmission sliding sleeve 74 and a jack 73; the supporting sliding sleeve 74 is slidably sleeved on the working pipe 5, and the first end of the supporting sliding sleeve is used for pushing the second clamping body 35; the jack 73 is disposed between the second end of the force-transmitting sliding sleeve 74 and the rope-connecting plate 72, and both ends of the jack 73 are used for simultaneously pressing the force-transmitting sliding sleeve 74 and the rope-connecting plate 72, so that the first end of the force-transmitting sliding sleeve 74 presses the second clamping body 35, and simultaneously the rope-connecting plate 72 tightens the pull rope 71.
In this embodiment, the use method of the pressing assembly is as follows: firstly, the force transmission sliding sleeve 74 is sleeved on the working pipe 5, then the pulling rope 71 is placed in the open slot 36 on the clamping body 3, the connecting rope plate 72 is arranged outside the second end of the force transmission sliding sleeve 74, finally, the jack 73 is arranged between the second end of the force transmission sliding sleeve 74 and the connecting rope plate 72, the pushing end of the jack 73 is pushed out, the force transmission sliding sleeve 74 and the connecting rope plate 72 are opened, the second end of the force transmission sliding sleeve 74 and the connecting rope plate 72 are simultaneously pressed, at the moment, the second clamping body 35 presses the end surface of the outer protection pipe 4, meanwhile, the pulling rope 71 is tightened, so that the first clamping body 34 at the other end presses the other end of the outer protection pipe 4, and the first clamping body 34 and the second clamping body 35 clamp the outer protection pipe 4. In particular, the jack 73 may be fixed to the second end of the force transfer sleeve 74 to facilitate positioning the jack 73 between the force transfer sleeve 74 and the tether plate 72.
The invention also provides a use method of the port plugging device for the production of the heat preservation pipe, the annular gap between the end surface of the outer protective pipe 4 and the working pipe 5 is plugged by using the plugging device for the production of the heat preservation pipe, and the method comprises the following steps:
s1, respectively sleeving the two clamping bodies 3 on the working pipe 5 and locating at two ends of the outer protective pipe 4;
s2, pre-tightening the locking assembly to enable the first sealing ring 1 to be attached to the outer wall of the working pipe 5;
s3, providing an axial pressing force for the clamping body 3, so that the second sealing ring 2 presses the end surface of the outer protecting pipe 4 and is connected with the outer protecting pipe in a sealing way;
s4, locking the locking assembly to enable the first sealing ring 1 to tightly hoop the outer wall of the working pipe 5 and be connected with the outer wall in a sealing mode;
s5, injecting heat insulation materials into the gap between the working pipe 5 and the outer protective pipe 4 to form a heat insulation layer;
and S6, releasing the pressing assembly and the locking assembly, and taking the plugging assembly off the working pipe 5.
Specifically, before step S1, the outer protection tube 4 is already sleeved to a reasonable position on the working tube 5, the bottom surface of the outer protection tube 4 is supported on the working platform, and the two ends of the working tube 5 and the outer protection tube 4 are suspended; in step S2, pre-tightening the locking assembly is performed by rotating the first half ring 31 and the second half ring 32, the screw 61 is inserted into the notch 63, and the locking nut 62 is appropriately tightened; in step S3, the axial pressing force provided to the clamping body 3 is achieved by the pressing assembly, and the specific steps are already explained and will not be described again; in step S4, the locking assembly is tightened by tightening the locking nut 62; in step S5, the thermal insulation material is typically polyurethane foam; in step S6, the pressing assembly is loosened by retracting the pushing end of the jack 73, reducing the distance between the two ends of the jack 73, and releasing the supporting force between the second clamping body 35 and the rope connecting plate 72, and the locking assembly is loosened by loosening the locking nut 62; the clamping body 3 is respectively connected with the working pipe 5 and the outer protection pipe 4 in a pressing manner, so that the connection between the first sealing ring 1 and the working pipe 5 and the connection between the second sealing ring 2 and the outer protection pipe 4 are possibly tight, and the first sealing ring 1 and the second sealing ring need to be knocked and separated by a tool.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. Port plugging device is used in insulating tube production, its characterized in that, including being used for setting up two shutoff subassemblies at outer pillar both ends, the shutoff subassembly includes:
the clamping body is clamped on the outer wall of the working pipe and is provided with a clamping hole for the working pipe to pass through;
the first sealing ring is fixedly arranged on the wall of the clamping hole and used for radially pressing the working pipe and being in sealing connection with the working pipe; and
and the second sealing ring is fixedly arranged on the side surface of the clamping body and is used for axially compressing the end surface of the outer protective pipe and is in sealing connection with the end surface.
2. The port plugging device for producing thermal insulation pipes according to claim 1, wherein the clamping body comprises a first half ring and a second half ring, the first half ring and the second half ring are provided with connecting ends, the two connecting ends are rotatably connected, the clamping body is opened or closed by the aid of the rotatable connection, and when the clamping body is closed, the inner walls of the first half ring and the second half ring are butted with each other to form the clamping hole.
3. The port blocking device for the production of thermal insulation pipes according to claim 2, wherein the other ends of the first half ring and the second half ring are both open ends, and the clamping body is provided with a locking component for fastening and connecting the two open ends when the clamping body is closed.
4. The port blocking device for producing thermal insulation pipes according to claim 3, wherein the locking assembly comprises:
one end of the screw is hinged to the opening and closing end of the first half ring, and the screw rotates in a plane perpendicular to the axis of the clamping hole;
the connecting block is fixedly arranged at the opening and closing end of the second semi-ring, and is provided with a notch groove which is positioned on the rotating path of the screw and used for clamping the screw; and
and the locking nut is arranged at the free end of the screw rod and used for clamping the screw rod into the notch groove and then compressing the connecting block to ensure that the clamping body is closed.
5. The port plugging device for thermal insulation pipe production according to claim 4, wherein a slot for inserting an end of the outer protection pipe is formed in a side surface of the clamping body, and the second sealing ring is fixedly arranged at the bottom of the slot.
6. The port plugging device for the production of the thermal insulation pipe according to claim 5, wherein the opening width of the slot is larger than the wall thickness of the outer protection pipe, and the surface of the bottom of the slot, which is used for being connected with the second sealing ring, is an arc surface.
7. The port blocking device for the production of the thermal insulation pipe according to any one of claims 3 to 6, further comprising a clamping assembly connected to the clamping bodies, wherein the clamping assembly is configured to provide an axial force to the clamping bodies so that the two clamping bodies axially clamp the outer protection pipe.
8. The port blocking device for producing thermal insulation pipes according to claim 7, wherein the clamping assembly comprises:
the pulling ropes are multiple and arranged on the outer side of the outer protective pipe, the first ends of the pulling ropes are connected with the first clamping body of the two clamping bodies, and the second ends of the pulling ropes extend to the outer side of the second clamping body of the two clamping bodies;
the rope connecting plate is used for connecting the second ends of the pull ropes simultaneously;
the supporting force unit is arranged between the rope connecting plate and the second clamping body and used for providing axial supporting force to enable the second clamping body to compress the end face of the outer protection pipe, and meanwhile, the rope connecting plate and the pull rope are used as the other end, the first clamping body provides axial tension to enable the first clamping body to compress the other end face of the outer protection pipe.
9. The port plugging device for producing the thermal insulation pipe according to claim 8, wherein the bracing force unit comprises:
the force transmission sliding sleeve is sleeved on the working pipe in a sliding manner, and the first end of the force transmission sliding sleeve is used for pushing the second clamping body;
the jack is arranged between the second end of the force transmission sliding sleeve and the rope connecting plate, and two ends of the jack are used for simultaneously pressing the force transmission sliding sleeve and the rope connecting plate, so that the first end of the force transmission sliding sleeve presses the second clamping body and simultaneously the rope connecting plate is tightened to the pull rope.
10. The use method of the port plugging device for producing the heat preservation pipe is characterized in that the annular gap between the end face of the outer protective pipe and the working pipe is plugged by using the plugging device for producing the heat preservation pipe according to any one of claims 3 to 9, and the method comprises the following steps:
sleeving the two clamping bodies on the working pipe respectively and locating at two ends of the outer protective pipe;
pre-tightening the locking assembly to enable the first sealing ring to be attached to the outer wall of the working pipe;
providing axial pressing force for the clamping body, so that the second sealing ring presses the end face of the outer protective pipe and is in sealing connection with the end face;
locking the locking assembly to enable the first sealing ring to hoop the outer wall of the working pipe and be connected with the outer wall in a sealing mode;
injecting a heat insulation material into a gap between the working pipe and the outer protective pipe and forming a heat insulation layer;
and releasing the compression assembly and the locking assembly, and taking the plugging assembly down from the working pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911043784.5A CN110653983A (en) | 2019-10-30 | 2019-10-30 | Port plugging device for production of thermal insulation pipe and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911043784.5A CN110653983A (en) | 2019-10-30 | 2019-10-30 | Port plugging device for production of thermal insulation pipe and use method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN110653983A true CN110653983A (en) | 2020-01-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911043784.5A Pending CN110653983A (en) | 2019-10-30 | 2019-10-30 | Port plugging device for production of thermal insulation pipe and use method thereof |
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| CN (1) | CN110653983A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112265210A (en) * | 2020-10-22 | 2021-01-26 | 中投(天津)智能管道股份有限公司 | A angle adjusting device for insulating tube ramming |
| CN113199689A (en) * | 2021-04-12 | 2021-08-03 | 青岛科技大学 | Four-block combined shutter type clamp device |
| CN118478472A (en) * | 2024-07-16 | 2024-08-13 | 山东万昌舜环保科技有限公司 | Insulating tube processing equipment |
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| CN118478472A (en) * | 2024-07-16 | 2024-08-13 | 山东万昌舜环保科技有限公司 | Insulating tube processing equipment |
| CN118478472B (en) * | 2024-07-16 | 2024-09-17 | 山东万昌舜环保科技有限公司 | Insulating tube processing equipment |
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