Detachable heat preservation structure for heavy-weight pipeline

Abstract

The utility model relates to a detachable thermal insulation structure for a heavy-weight pipeline, which comprises protective shells which can be spliced with each other and are internally provided with thermal insulation layers; the connecting strips a are arranged at two ends of one protective shell, one end of each connecting strip a extends to the inner wall of the heat preservation layer, and a gas transmission groove is formed in each connecting strip a; the connecting strips b are arranged at the two ends of the other protective shell, and one ends of the connecting strips b extend to the inner wall of the heat preservation layer and are provided with connecting grooves; the inserting piece is installed in the connecting strip a in a sliding mode and used for being inserted into the connecting groove to fix the connecting strip a and the connecting strip b, and a vent groove is formed in the inserting piece; the locking piece is arranged on the inserting piece and used for fixing the inserting piece; the connecting pieces are arranged on the connecting strips a and used for fixing the ends, deviating from the interior of the heat preservation layer, of the connecting strips a and the connecting strips b. When the thermal insulation layer is installed, the two ends of the connecting strip a and the two ends of the connecting strip b are fixed through the connecting pieces and the inserting pieces, so that the connecting position of the protective shell is not prone to fracture due to one-way force caused by thermal expansion and cold contraction of the thermal insulation layer.

Description

Technical Field

[0001] The present application relates to the technical field of pipeline insulation, and in particular to a detachable insulation structure for heavy-weight pipelines. Background Art

[0002] Heavy-duty pipelines often carry important fluid transportation tasks, and their internal equipment and pipelines require regular maintenance and inspection. The insulation layer protects the pipelines to prevent damage to the pipelines caused by thermal expansion and contraction due to extreme temperature differences. Generally, the insulation layer of heavy-duty pipelines usually adopts a detachable structure, so that the insulation layer can be easily removed during maintenance and inspection without damaging or removing the pipeline itself.

[0003] However, after the removable insulation layer is generally used to wrap the pipe and connect the two ends, it is only fixed from the outer fixed shell of the insulation layer. The inner wall of the insulation layer and the outer wall of the pipe are only fitted tightly against each other without any connection measures. When the insulation layer expands and contracts due to heat and cold, since the inner walls of the insulation layer are not connected to each other or to the pipe, the connection of the fixed shell outside the insulation layer is prone to breakage due to the influence of the force from the inside of the insulation layer, which in turn leads to separation between the fixed shells, separation of the splicing surface of the insulation layer, and even the entire fall off of the insulation layer, thereby losing the insulation ability of the pipe. Utility Model Content

[0004] In order to solve the problem that the traditional connection method of the pipeline insulation layer easily causes the insulation layer to fall off when it is thermally expanded or contracted, the present application provides a detachable insulation structure for heavy-weight pipelines.

[0005] The present application provides a detachable insulation structure for heavy-duty pipes using the following technical solutions:

[0006] A detachable insulation structure for a heavy-weight pipe, comprising:

[0007] The protective shell is provided with two mutually combinable ones;

[0008] The insulation layer is located inside the protective shell to keep the pipes warm;

[0009] Two connecting strips a are provided and are respectively provided at the two ends of one of the protective shells, one side of which extends to the inner wall of the thermal insulation layer and has a gas transmission groove for ventilation;

[0010] Two connecting bars b are provided and are respectively located at the two ends of the other protective shell, one side of which extends to the inner wall of the insulation layer and is provided with a connecting groove;

[0011] A plug-in is slidably installed in the connecting strip a, and is driven by the air pressure after the air delivery groove is ventilated to slide into the connecting groove to connect the connecting strip a and the connecting strip b, wherein a ventilation groove for ventilation is opened;

[0012] a locking member, provided on the plug-in and driven by air pressure from the ventilation groove to fix the plug-in in the connecting groove;

[0013] A connecting piece is provided on the connecting strip a and is used to connect the connecting strip a and the end of the connecting strip b away from the interior of the thermal insulation layer.

[0014] Optionally, the locking member includes:

[0015] A mounting pipe, provided on the plug-in and in communication with the vent groove;

[0016] a limiting tube, slidably mounted on the mounting tube and in communication with the mounting tube, one end of the limiting tube being closed;

[0017] A connecting hole that is slidably matched with the position-limiting tube is provided on the side wall of the connecting groove. When the plug-in unit is inserted into the connecting groove, the position-limiting tube is inserted into the connecting hole under the action of air pressure.

[0018] Optionally, the connecting member includes a connecting bolt, one end of which passes through the connecting strip a and is threadedly connected to the connecting strip b.

[0019] Optionally, an air guide groove is opened in the connecting bolt, the air delivery groove is connected to the ventilation groove, the air guide groove is connected to the air delivery groove, the air guide groove is used to connect to the air source to supply air to the air delivery groove, and a closing component is provided on the connecting bolt for closing the air guide groove.

[0020] Optionally, the closure assembly includes:

[0021] a rubber plug, used for being embedded in one end of the air guide groove to seal the air guide groove;

[0022] A pressure ring is threadedly mounted on the connecting bolt and is used to compress the rubber plug.

[0023] Optionally, an air guide member is slidably installed in one end of the air guide groove connected to the air delivery groove, and the air guide member is used to connect the air guide groove and the air delivery groove under the push of air pressure.

[0024] Optionally, a sealing plate is slidably installed in one end of the gas delivery groove connected to the gas guide groove, an annular baffle is provided in the gas delivery groove, and an elastic member is provided in the gas delivery groove, and the elastic member is used to push the sealing plate to fit tightly against the baffle to close one end of the gas delivery groove.

[0025] Optionally, the air guide member includes an air guide tube slidably installed in the air guide groove, the end of the air guide tube used for connecting to the air delivery groove is closed, and an air outlet is provided on the side wall of the end of the air guide tube used for connecting to the air delivery groove.

[0026] Optionally, a rubber sheet is provided in the ventilation groove, one side of the rubber sheet is connected to the inner wall of the ventilation groove and the rubber sheet seals the ventilation groove.

[0027] To sum up, the present application sets connecting strips a, connecting strips b and plug-ins, and uses air injection to push the plug-in to fix the side of the insulation layer in contact with the pipeline, so that when the insulation layer expands and contracts due to heat and cold, the inner and outer protective shells of the insulation layer are connected and fixed to each other, making it difficult for the connection of the protective shell to break due to unidirectional force. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a cross-sectional view of this application.

[0029] Figure 2 yes Figure 1 Enlarged schematic diagram of part A in the middle.

[0030] Figure 3 yes Figure 2 Enlarged schematic diagram of part B in the middle.

[0031] Figure 4 This is a cross-sectional view of the connector of this application

[0032] Those skilled in the art will appreciate that the elements in the drawings are shown for simplicity and clarity and are not necessarily drawn to scale. For example, the size and position of some elements in the drawings may be exaggerated relative to other elements to help improve understanding of the embodiments of the present invention.

[0033] Figure markings: 1. Protective shell; 2. Insulation layer; 3. Connecting strip a; 31. Air delivery groove; 32. Slide groove; 33. Sealing plate; 34. Baffle; 35. Elastic member; 351. Spring; 36. Mounting plate; 4. Connecting strip b; 41. Connecting groove; 42. Connecting hole; 5. Plug-in; 51. Connecting block; 52. Second retaining ring; 53. Mounting hole; 54. Ventilation groove; 55. Rubber sheet; 6. Locking member; 61. Mounting tube; 62. Limiting tube; 63. First retaining ring; 7. Connecting member; 71. Connecting bolt; 72. Air guide groove; 8. Closing assembly; 81. Rubber plug; 82. Pressure ring; 9. Air guide member; 91. Air guide pipe; 92. Air outlet. Implementation Method

[0034] The following is combined with Figure 1-4 This application is described in further detail.

[0035] The present application discloses a detachable heat-insulating structure for heavy-weight pipes. Figure 1 , including two semicircular protective shells 1 that can be assembled with each other, an insulation layer 2 fixedly installed in the protective shell 1, two connecting strips a3 and two connecting strips b4.

[0036] Reference Figure 2 and Figure 3 , the two protective shells 1 are vertically assembled together, the two connecting strips a3 are horizontal and respectively covered and fixedly installed on the two ends of the protective shell 1 on the upper side, and the two connecting strips b4 are horizontal and respectively covered and fixedly installed on the two ends of the protective shell 1 on the lower side.

[0037] Reference Figure 2 and Figure 3 The corresponding connecting strips a3 and connecting strips b4 are spliced ​​with each other. A number of plug-ins 5 are evenly provided on the side of the connecting strip a3 close to the inside of the insulation layer 2. The plug-in 5 includes a connecting block 51 that is vertically slidably installed inside the connecting strip a3. A connecting groove 41 that slides with the connecting block 51 is provided on the top wall of the connecting strip b4. A gas delivery groove 31 for ventilation is provided inside the connecting strip a3. The gas delivery groove 31 is connected to the sliding space of the connecting block 51. After the gas delivery groove 31 is ventilated, the lower end of the connecting block 51 is inserted into the connecting groove 41 under the action of air pressure.

[0038] Reference Figure 2 and Figure 3 A connecting hole 42 is provided on the inner wall of the connecting groove 41, a locking piece 6 is provided on the connecting block 51, and two mounting holes 53 are provided on the side wall of the lower end of the connecting block 51. The locking piece 6 includes two mounting tubes 61 respectively provided in the two mounting holes 53 and integrally connected to the connecting block 51. A ventilation groove 54 is provided inside the connecting block 51, the ventilation groove 54 is connected to the gas delivery groove 31, and the mounting tube 61 is connected to the ventilation groove 54.

[0039] Reference Figure 2 and Figure 3 A stopper tube 62, one end of which is closed, is slidably mounted in the mounting hole 53. The stopper tube 62 slidably engages with the connecting hole 42, and the end surface of the stopper tube 62 forms a sealed engagement with the bottom of the mounting hole 53. The stopper tube 62 is slidably mounted on the mounting tube 61, and the stopper tube 62 and the mounting tube 61 are connected. A first retaining ring 63 is integrally mounted on the mounting tube 61, and the first retaining ring 63 interferes with the inner wall of the end surface of the stopper tube 62 other than the closed end, and forms a sealed engagement.

[0040] Reference Figure 2 and Figure 3A rubber sheet 55 is installed inside the vent groove 54 above the mounting tube 61. One side of the rubber sheet 55 is fixedly connected to the inner wall of the vent groove 54. Under normal circumstances, the rubber sheet 55 seals the vent groove 54. When the gas delivery groove 31 is ventilated, the air pressure pushes the connecting block 51 to slide into the connecting groove 41. When the lower end of the connecting block 51 abuts the bottom of the connecting groove 41, the stop tube 62 is aligned with the connecting hole 42.

[0041] Continue to inflate the air supply groove 31, the air pressure pushes the rubber sheet 55 to open, the gas enters the mounting tube 61 along the vent groove 54, and then enters the limiting tube 62 along the mounting tube 61, thereby pushing the limiting tube 62 to slide and insert into the connecting hole 42, thereby fixing the connecting block 51 and the connecting strip b4.

[0042] Since the gas does not enter the mounting tube 61 to push the limiting tube 62 out when the connecting block 51 slides, the connecting block 51 is not likely to get stuck due to the limiting tube 62 being pushed out when sliding.

[0043] Reference Figure 1 and Figure 4 A plurality of connecting parts 7 are provided on the side of the connecting strip a3 away from the inside of the insulation layer 2. The connecting parts 7 are evenly distributed on the connecting strip a3. The connecting part 7 includes a connecting bolt 71. One end of the connecting bolt 71 passes through the connecting strip a3 and is threadedly installed on the connecting strip b4.

[0044] Reference Figure 4 An air guide groove 72 is defined within the connecting bolt 71. One end of the air guide groove 72 communicates with the air delivery groove 31, and the other end of the air guide groove 72 coaxially extends through the cap of the connecting bolt 71. During installation, the outer side of the protective shell 1 is first secured with the connecting bolt 71. Then, air is inflated into the air guide groove 72 via the air pipe, pushing the connecting block 51 into the connecting groove 41 to secure the inner side of the protective shell 1.

[0045] Reference Figure 4 A closing assembly 8 is provided on the connecting bolt 71. The closing assembly 8 includes a rubber plug 81 embedded in one end of the air guide groove 72 and a pressure ring 82 threadedly installed on the bolt cap of the connecting bolt 71. When inflation is completed, the rubber plug 81 is inserted into one end of the air guide groove 72 to close the air guide groove 72, and the pressure ring 82 is tightened. The inner side of the pressure ring 82 presses against the rubber plug 81 to fix the rubber plug 81 to prevent the rubber plug 81 from falling off.

[0046] Since the air guide groove 72 of the connecting bolt 71 and the air delivery groove 31 are not seamlessly connected, large leakage may occur during the air delivery process. Therefore, an air guide member 9 is designed in the air guide groove 72 to assist in air delivery and reduce gas leakage.

[0047] Reference Figure 4The air guide member 9 includes an air guide tube 91 slidably installed in the connecting end of the air guide groove 72 and the air delivery groove 31. An annular baffle 34 and an annular mounting plate 36 are coaxially fixedly installed at the end of the connecting end of the air delivery groove 31 and the air guide groove 72. A sealing plate 33 is provided between the baffle 34 and the mounting plate 36. The sealing plate 33 is mounted on the mounting plate 36 through an elastic member 35. The elastic member 35 is set as a spring 351. One end of the spring 351 is fixedly mounted on the mounting plate 36, and the other end of the spring 351 is fixedly connected to the sealing plate 33. Under normal circumstances, the spring 351 pushes the sealing plate 33 to fit tightly against the baffle 34 to close one end of the air delivery groove 31.

[0048] Reference Figure 4 One end of the air guide tube 91 is closed and an air outlet 92 is opened on the side wall. When the air guide groove 72 is ventilated, under the action of air pressure, one end of the air guide tube 91 extends into the air delivery groove 31 to push the sealing plate 33 away from the baffle 34, and then the compressed gas enters the air delivery groove 31 through the air outlet 92.

[0049] Reference Figure 4 A second retaining ring 52 is integrally provided on the side wall of the connecting block 51, and a sliding groove 32 is provided inside the connecting strip a3 for slidingly installing the second retaining ring 52, and the second retaining ring 52 is sealed with the end surface of the sliding groove 32.

[0050] Reference Figure 1 、 Figure 2 、 Figure 3 and Figure 4 During normal transportation, the air delivery pipe is vacuumed. Under the action of atmospheric pressure, the limiting tube 62 will shrink into the mounting hole 53, and the connecting block 51 will shrink into the connecting strip a3. The limiting tube 62 presses the end face of the mounting hole 53 against the bottom of the mounting hole 53 to close the mounting hole 53. The connecting block 51 seals the air delivery groove 31 through the sealing cooperation between the second retaining ring 52 and the end face of the slide groove 32. The other end of the air delivery groove 31 pushes the sealing plate 33 against the baffle 34 through the spring 351 to close it, so that the interior of the air delivery groove 31 can be kept in a vacuum state. During transportation and installation, the connecting block 51 is not easy to slide out of the connecting strip a3, and transportation and installation are more convenient.

[0051] The implementation principle of the detachable insulation structure of a heavy-weight pipeline in the embodiment of the present application is as follows: when installing the insulation layer 2, first, after the pipeline is erected, the two protective shells 1 are covered and installed on the pipeline, and then the connecting bolts 71 are tightened one by one and threadedly connected to the connecting bar b4 to fix the outer side of the protective shell 1, and then the air guide groove 72 is inflated, and the air pressure pushes the air guide pipe 91 to be inserted into the air delivery groove 31 to push the sealing plate 33 open, and the gas enters the air delivery groove 31 through the air outlet 92, and then The gas enters the ventilation groove 54 along the gas delivery groove 31. Due to the obstruction of the rubber sheet 55 in the ventilation groove 54 and the pressure difference between the internal air pressure of the ventilation groove 54 and the internal air pressure of the gas delivery groove 31, the connecting block 51 is pushed into the connecting groove 41. When the connecting block 51 is pressed against the bottom wall of the connecting groove 41, the gas pushes the rubber sheet 55 away and enters the mounting tube 61, and then enters the limiting tube 62 along the mounting tube 61, pushes the limiting tube 62 to be inserted into the connecting hole 42 to connect the connecting block 51 with the connecting strip b4.

[0052] Since the first retaining ring 63 and the end face of the slide groove 32 cooperate to limit the connecting block 51, the connecting strip a3 is connected to the connecting strip b4 through the connecting block 51, and since a seal is formed between the first retaining ring 63 and the end face of the slide groove 32, a seal is formed between the second retaining ring 52 and the inner wall of the end face of the limiting tube 62, so that when the inflation is completed, the gas source is disconnected, and the sealing plate 33 is reset to close one end of the gas delivery groove 31, a sealed space is formed inside the gas delivery groove 31, so that the limiting tube 62 will remain inserted into the connecting hole 42, and the connecting strip a3 and the connecting strip b4 will always be in a connected state.

[0053] During disassembly, first unscrew the connecting bolt 71 , then insert the vacuum pipe into the gas delivery groove 31 to draw vacuum, and then the limiting tube 62 and the connecting block 51 can be retracted.

[0054] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A detachable insulation structure for heavy-weight pipes, characterized in that: include: A protective shell (1) is provided with two mutually assembleable ones; A thermal insulation layer (2) is provided inside the protective shell (1) and is used to insulate the pipe; Two connecting strips a (3) are provided and are respectively located at the two ends of one of the protective shells (1), one side of which extends to the inner wall of the thermal insulation layer (2), and a gas delivery groove (31) for ventilation is provided therein; Two connecting bars b (4) are provided and are located at the two ends of the other protective shell (1), one side of which extends to the inner wall of the thermal insulation layer (2) and is provided with a connecting groove (41); A plug-in unit (5) is slidably mounted in the connecting strip a (3), and driven by air pressure after ventilation through the air delivery groove (31) to slide into the connecting groove (41) to connect the connecting strip a (3) and the connecting strip b (4), wherein a ventilation groove (54) for ventilation is provided; A locking member (6) is provided on the plug-in unit (5) and is driven by air pressure after ventilation of the vent groove (54) to fix the plug-in unit (5) in the connecting groove (41); A connecting piece (7) is provided on the connecting strip a (3) and is used to connect the connecting strip a (3) and the end of the connecting strip b (4) away from the interior of the thermal insulation layer (2).

2. A detachable heat-insulating structure for heavy-weight pipes according to claim 1, characterized in that: The locking member (6) comprises: A mounting tube (61) is provided on the plug-in unit (5) and is in communication with the vent groove (54); a limiting tube (62) slidably mounted on the mounting tube (61) and in communication with the mounting tube (61), one end of the limiting tube (62) being in a closed shape; A connecting hole (42) that slidably cooperates with the limiting tube (62) is provided on the side wall of the connecting groove (41); when the plug-in unit (5) is inserted into the connecting groove (41), the limiting tube (62) is inserted into the connecting hole (42) under the action of air pressure.

3. The detachable heat-insulating structure for heavy-weight pipes according to claim 1, characterized in that: The connecting member (7) comprises a connecting bolt (71), one end of which passes through the connecting strip a (3) and is threadedly connected to the connecting strip b (4).

4. The detachable heat-insulating structure for heavy-weight pipes according to claim 3, characterized in that: An air guide groove (72) is provided in the connecting bolt (71), the air delivery groove (31) is communicated with the ventilation groove (54), the air guide groove (72) is communicated with the air delivery groove (31), the air guide groove (72) is used to connect to an air source to supply air to the air delivery groove (31), and a closing component (8) is provided on the connecting bolt (71) for closing the air guide groove (72).

5. The detachable heat-insulating structure for heavy-weight pipes according to claim 4, characterized in that: The closure assembly (8) comprises: A rubber plug (81) is used for being embedded in one end of the air guide groove (72) to seal the air guide groove (72); A pressure ring (82) is threadedly mounted on the connecting bolt (71) and is used to compress the rubber plug (81).

6. The detachable heat-insulating structure for heavy-weight pipes according to claim 5, characterized in that: An air guide member (9) is slidably installed in one end of the air guide groove (72) connected to the air delivery groove (31), and the air guide member (9) is used to connect the air guide groove (72) and the air delivery groove (31) under the push of air pressure.

7. The detachable heat-insulating structure for heavy-weight pipes according to claim 4, characterized in that: A sealing plate (33) is slidably installed in one end of the gas delivery groove (31) connected to the gas guide groove (72), an annular baffle (34) is provided in the gas delivery groove (31), and an elastic member (35) is provided in the gas delivery groove (31). The elastic member (35) is used to push the sealing plate (33) to fit tightly against the baffle (34) to close one end of the gas delivery groove (31).

8. The detachable heat-insulating structure for heavy-weight pipes according to claim 6, characterized in that: The air guide member (9) includes an air guide tube (91) slidably mounted in the air guide groove (72), one end of the air guide tube (91) for connecting to the air delivery groove (31) is closed, and an air outlet hole (92) is provided on the side wall of the end of the air guide tube (91) for connecting to the air delivery groove (31).

9. The detachable heat-insulating structure for heavy-weight pipes according to claim 1, characterized in that: A rubber sheet (55) is provided in the vent groove (54), one side of the rubber sheet (55) is connected to the inner wall of the vent groove (54), and the rubber sheet (55) seals the vent groove (54).

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