Connecting device for concentric pipelines with different pressure grades

Abstract

The utility model relates to the technical field of pressure pipelines, and discloses a different pressure grade concentric pipeline connecting device which comprises a first pipeline, a first connecting block is fixedly connected in the left side of the first pipeline, an adapter block is arranged on the outer wall of the first connecting block, and a second connecting block is arranged on the outer wall of the right side of the adapter block. A second pipeline is fixedly connected to the interior of the right side of the second connecting block, a first sealing ring is fixedly connected to the interior of the right side of the first connecting block, a first threaded rod is fixedly connected to the outer wall of the left side of the adapter block, and a second threaded rod is fixedly connected to the outer wall of the right side of the adapter block; the outer wall of the left side of the first threaded rod is in threaded connection with a first nut. According to the flange pipeline connecting device, the first connecting block is attached to the outer wall of the adapter block through the first threaded rod, then the first nut is rotated to enable the first nut to rotate, and finally the purpose of connecting pipelines together is achieved, so that the effect of guaranteeing concentric connection of flange pipelines with different pressure grades can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure pipelines, in particular to a connecting device for concentric pipelines with different pressure levels. Background Art

[0002] Pressure pipeline refers to a tubular equipment used to transport gas or liquid under a certain pressure. Pressure pipelines are widely used in the petroleum, chemical, electric power, metallurgy, urban gas, and thermal industries. Pressure pipelines have strict specifications and standards in design, manufacturing, installation, use, inspection and maintenance to ensure their safe and reliable operation. Connecting devices are often used for the installation and connection of concentric pressure pipelines.

[0003] Existing concentric pipe connecting devices connect concentric flange pipes of the same pressure level through a lower support structure. However, using the lower support structure for flange pipes of different pressure levels will cause them to be misaligned and non-concentric, thereby causing water leakage inside the pipe and increasing pressure loss. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a concentric pipe connection device with different pressure levels, which aims to improve the problem that the flange pipes of different pressure levels may be misaligned when using the lower support structure, resulting in internal leakage of the pipes and increased pressure loss.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] A device for connecting concentric pipes of different pressure levels, comprising a first pipe, a first connecting block fixedly connected to the left interior of the first pipe, a transfer block provided on the outer wall of the first connecting block, a second connecting block provided on the right outer wall of the transfer block, a second pipe fixedly connected to the right interior of the second connecting block, a first sealing ring fixedly connected to the right interior of the first connecting block, a first threaded rod fixedly connected to the left outer wall of the transfer block, a second threaded rod fixedly connected to the right outer wall of the transfer block, a first nut threadedly connected to the left outer wall of the first threaded rod, a second nut threadedly connected to the right outer wall of the second threaded rod, a second sealing ring fixedly connected to the interior of the transfer block, a third sealing ring fixedly connected to the interior of the second connecting block, a fixing assembly provided on the outer wall of the transfer block, and the fixing assembly being used to fix the transfer block.

[0007] Preferably, the fixing assembly includes a positioning block, the upper surface of the positioning block is fixedly connected to the outer wall of the adapter block, and the lower surface of the positioning block is fixedly connected to the first rack.

[0008] Preferably, the right outer wall of the first threaded rod is arranged on the inner wall of the first connecting block, and the left outer wall of the second threaded rod is arranged inside the second connecting block.

[0009] Preferably, the outer wall of the first rack is slidably connected to a sleeve, the lower surface of the sleeve is fixedly connected to a base, the right upper surface of the base is fixedly connected to a pedestal, and the upper surface of the pedestal is fixedly connected to a hydraulic cylinder.

[0010] Preferably, the output end of the hydraulic cylinder is fixedly connected to a second rack rail, the middle upper surface of the base is fixedly connected to a second fixed plate, and the left upper surface of the base is fixedly connected to a first fixed plate.

[0011] Preferably, a second rack is slidably connected to the interior of the second fixing plate, and a second gear is meshedly connected to the outer wall of the second rack.

[0012] Preferably, a rotating shaft is fixedly connected to the interior of the second gear, and a middle outer wall of the rotating shaft is rotatably connected to the interior of the first fixed plate.

[0013] Preferably, a first gear is fixedly connected to the right outer wall of the first fixing plate, and the outer wall of the first gear is meshedly connected to the outer wall of the first rack.

[0014] The utility model has the following beneficial effects:

[0015] 1. In the utility model, the first connecting block is attached to the outer wall of the adapter block by the first threaded rod, and then the first nut is turned to make it rotate. At this time, the first connecting block is installed on the surface of the adapter block, and finally the purpose of connecting the first pipe and the second pipe together is achieved, thereby achieving the effect of ensuring the concentric connection of flange pipes with different pressure levels.

[0016] 2. In the utility model, the second rack is driven to slide by starting the hydraulic cylinder. When the second rack slides, it drives the second gear to rotate, and finally achieves the purpose of controlling the lifting of the connecting device, avoiding manual handling of the second pipeline, thereby facilitating the installation personnel to directly install the connecting device on the first pipeline and the second pipeline.

[0017] 3. In the present invention, when water is transported through a pipeline, the first sealing ring, the second sealing ring and the third sealing ring provide a sealed space for the smooth passage of water, thereby ensuring that the connection device is well sealed and leak-proof. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram of a concentric pipe connection device with different pressure levels proposed by the utility model;

[0019] Figure 2This is a schematic diagram of the first sealing ring of a concentric pipe connection device with different pressure levels proposed by the utility model;

[0020] Figure 3 This is a schematic diagram of the second rack rail of a concentric pipe connection device with different pressure levels proposed by the present invention.

[0021] Legend:

[0022] 1. First pipe; 2. First connecting block; 3. Adapter block; 4. Second connecting block; 5. Second pipe; 6. First sealing ring; 7. Second sealing ring; 8. Third sealing ring; 9. First threaded rod; 10. First nut; 11. Second threaded rod; 12. Second nut; 13. Positioning block; 14. First rack; 15. Sleeve; 16. First gear; 17. Rotating shaft; 18. Second gear; 19. First fixed plate; 20. Base; 21. Pedestal; 22. Hydraulic cylinder; 23. Second rack; 24. Second fixed plate. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings of the specification of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] Reference Figure 1 and Figure 2 , the utility model provides an embodiment: a concentric pipe connection device of different pressure levels, including a first pipe 1, a first connecting block 2 is fixedly connected to the left interior of the first pipe 1, an adapter block 3 is provided on the outer wall of the first connecting block 2, a second connecting block 4 is provided on the right outer wall of the adapter block 3, a second pipe 5 is fixedly connected to the right interior of the second connecting block 4, a first sealing ring 6 is fixedly connected to the right interior of the first connecting block 2, a first threaded rod 9 is fixedly connected to the left outer wall of the adapter block 3, a second threaded rod 11 is fixedly connected to the right outer wall of the adapter block 3, a first nut 10 is threadedly connected to the left outer wall of the first threaded rod 9, and a second nut 12 is threadedly connected to the right outer wall of the second threaded rod 11, a second sealing ring 7 is fixedly connected to the interior of the adapter block 3, a third sealing ring 8 is fixedly connected to the interior of the second connecting block 4, and a fixing component is provided on the outer wall of the adapter block 3, which is used to fix the adapter block 3;

[0025] Specifically, the first connecting block 2 passes through the first threaded rod 9 and is close to the surface of the adapter block 3, and then the first nut 10 is rotated to make it rotate. At this time, the first connecting block 2 is installed on the surface of the adapter block 3, and the second connecting block 4 passes through the second threaded rod 11 and is close to the surface of the adapter block 3, and the second nut 12 is rotated to make it rotate. Then, the second connecting block 4 is installed on the surface of the adapter block 3, and finally the first pipe 1 and the second pipe 5 are connected together, thereby achieving the effect of ensuring the concentric connection of flange pipes with different pressure levels; when the pipeline is conveying water, the first sealing ring 6, the second sealing ring 7 and the third sealing ring 8 provide a sealing space for the smooth passage of water, thereby ensuring that the connection device is well sealed and leak-proof;

[0026] Reference Figure 1 The fixing assembly includes a positioning block 13, the upper surface of the positioning block 13 is fixedly connected to the outer wall of the adapter block 3, and the lower surface of the positioning block 13 is fixedly connected to the first rack 14;

[0027] Specifically, the first rack 14 fixes the position of the positioning block 13 , and the positioning block 13 fixes the adapter block 3 .

[0028] Reference Figure 1 and Figure 3 The right outer wall of the first threaded rod 9 is arranged on the inner wall of the first connecting block 2, and the left outer wall of the second threaded rod 11 is arranged inside the second connecting block 4; the outer wall of the first rack 14 is slidably connected with a sleeve 15, the lower surface of the sleeve 15 is fixedly connected to the base 20, the right upper surface of the base 20 is fixedly connected to the pedestal 21, and the upper surface of the pedestal 21 is fixedly connected to the hydraulic cylinder 22; the output end of the hydraulic cylinder 22 is fixedly connected to the second rack 23, the middle upper surface of the base 20 is fixedly connected to the second fixed plate 24, and the left upper surface of the base 20 is fixedly connected to the first fixed plate 19; the interior of the second fixed plate 24 is slidably connected to the second rack 23, and the outer wall of the second rack 23 is meshed with the second gear 18; the interior of the second gear 18 is fixedly connected to the rotating shaft 17, and the middle outer wall of the rotating shaft 17 is rotatably connected to the interior of the first fixed plate 19; the right outer wall of the first fixed plate 19 is fixedly connected to the first gear 16, and the outer wall of the first gear 16 is meshed with the outer wall of the first rack 14;

[0029] Specifically, the hydraulic cylinder 22 is started to drive the second rack 23 to slide. When the second rack 23 slides, it will drive the second gear 18 to rotate, and then the rotating shaft 17 rotates under the drive of the second gear 18. At this time, the first gear 16 rotates under the drive of the rotating shaft 17, and the first rack 14 slides under the drive of the first gear 16. Then the positioning block 13 moves up and down with the sliding of the first rack 14, and finally the purpose of controlling the lifting and lowering of the connecting device is achieved, avoiding manual transportation of the second pipe 5, thereby facilitating the installation personnel to directly install the connecting device on the first pipe 1 and the second pipe 5.

[0030] Working principle: When the device needs to be used, first fit the first connecting block 2 to the outer wall of the adapter block 3 through the first threaded rod 9, then turn the first nut 10 to make it rotate around the first threaded rod 9, and then fix the first connecting block 2 to the outer wall of the adapter block 3, fit the second connecting block 4 to the outer wall of the adapter block 3 through the second threaded rod 11, and then turn the second nut 12 to make it rotate around the second threaded rod 11, and then the second connecting block 4 is fixed to the outer wall of the adapter block 3 of the concentric pipe connection device with different pressure levels, and finally achieve the purpose of connecting the first pipe 1 and the second pipe 5 together, thereby achieving the effect of ensuring the concentric connection of flange pipes with different pressure levels; when water flows through the concentric pipe connection device with different pressure levels, the first sealing ring 6, the second sealing ring 7 and the third sealing ring 8 are on the inside of the pipe The sealing is performed to ensure that the connection device is well sealed and leak-proof; the hydraulic cylinder 22 is started to drive the second rack 23 to slide inside the second fixed plate 24. When the second rack 23 slides under the drive of the hydraulic cylinder 22, the second rack 23 will drive the second gear 18 to rotate around the rotating shaft 17, and then the rotating shaft 17 rotates inside the first fixed plate 19 under the drive of the second gear 18. At this time, the first gear 16 rotates with the rotation of the rotating shaft 17, and then the first rack 14 slides inside the sleeve 15 under the drive of the first gear 16. Then the positioning block 13 moves up and down under the drive of the first rack 14, and finally the purpose of controlling the lifting and lowering of the connection device is achieved, avoiding manual handling of the second pipe 5, thereby facilitating the installation personnel to directly install the connection device on the first pipe 1 and the second pipe 5.

[0031] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A concentric pipe connection device for different pressure levels, comprising a first pipe (1), characterized in that: The left interior of the first pipe (1) is fixedly connected to a first connecting block (2), the outer wall of the first connecting block (2) is provided with an adapter block (3), the right exterior wall of the adapter block (3) is provided with a second connecting block (4), the right interior of the second connecting block (4) is fixedly connected to a second pipe (5), the right interior of the first connecting block (2) is fixedly connected to a first sealing ring (6), the left exterior wall of the adapter block (3) is fixedly connected to a first threaded rod (9), the right exterior wall of the adapter block (3) is fixedly connected to a second threaded rod (11), the left exterior wall of the first threaded rod (9) is threadedly connected to a first nut (10), the right exterior wall of the second threaded rod (11) is threadedly connected to a second nut (12), the interior of the adapter block (3) is fixedly connected to a second sealing ring (7), the interior of the second connecting block (4) is fixedly connected to a third sealing ring (8), and the outer wall of the adapter block (3) is provided with a fixing assembly, the fixing assembly being used to fix the adapter block (3).

2. The concentric pipe connection device of different pressure levels according to claim 1, characterized in that: The fixing assembly comprises a positioning block (13), the upper surface of the positioning block (13) is fixedly connected to the outer wall of the adapter block (3), and the lower surface of the positioning block (13) is fixedly connected to a first rack (14).

3. The concentric pipe connection device of different pressure levels according to claim 1, characterized in that: The right outer wall of the first threaded rod (9) is arranged on the inner wall of the first connecting block (2), and the left outer wall of the second threaded rod (11) is arranged inside the second connecting block (4).

4. The concentric pipe connection device of different pressure levels according to claim 2, characterized in that: The outer wall of the first rack rail (14) is slidably connected to a sleeve (15), the lower surface of the sleeve (15) is fixedly connected to a base (20), the right upper surface of the base (20) is fixedly connected to a pedestal (21), and the upper surface of the pedestal (21) is fixedly connected to a hydraulic cylinder (22).

5. The device for connecting concentric pipes of different pressure levels according to claim 4, characterized in that: The output end of the hydraulic cylinder (22) is fixedly connected to a second rack rail (23), the middle upper surface of the base (20) is fixedly connected to a second fixed plate (24), and the left upper surface of the base (20) is fixedly connected to a first fixed plate (19).

6. The device for connecting concentric pipes of different pressure levels according to claim 5, characterized in that: The interior of the second fixing plate (24) is slidably connected to a second rack rail (23), and the outer wall of the second rack rail (23) is meshingly connected to a second gear (18).

7. The device for connecting concentric pipes of different pressure levels according to claim 6, characterized in that: The interior of the second gear (18) is fixedly connected to a rotating shaft (17), and the middle outer wall of the rotating shaft (17) is rotatably connected to the interior of the first fixed plate (19).

8. The device for connecting concentric pipes of different pressure levels according to claim 7, characterized in that: The right outer wall of the first fixed plate (19) is fixedly connected to a first gear (16), and the outer wall of the first gear (16) is meshedly connected to the outer wall of the first rack (14).

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