Splicing type metal hose for natural gas pipeline connection

Abstract

The invention relates to the technical field of spliced metal hoses, in particular to a spliced metal hose for natural gas pipeline connection, which comprises a metal hose I and a metal hose II, the ends, away from each other, of the first metal hose and the second metal hose are fixedly connected with a first connecting sleeve and a second connecting sleeve correspondingly, the first metal hose and the second metal hose are connected through a third connecting hose, and the ends, close to each other, of the first connecting sleeve and the second connecting sleeve are provided with connecting assemblies. Through the arranged connecting assembly, an arranged arc-shaped clamping block is inserted into a first arc-shaped groove, then a first connecting sleeve is rotated, the size of the first arc-shaped groove is matched with that of the arc-shaped clamping block, the length of a second arc-shaped groove is larger than that of the arc-shaped clamping block, and therefore in the rotating process, the arc-shaped clamping block can be clamped into the second arc-shaped groove; therefore, connection between the first connecting sleeve and the second connecting sleeve is stable, and in the process of rotating the first connecting sleeve, the first arc-shaped rack rotates along with the first connecting sleeve.

Description

Technical Field

[0001] The invention relates to the technical field of spliced ​​metal hoses, and in particular to a spliced ​​metal hose for connecting natural gas pipelines. Background Art

[0002] With the continuous growth of energy demand and the widespread application of natural gas as a clean energy, the construction and maintenance of natural gas pipelines have become crucial. In the natural gas transmission system, the reliability and flexibility of pipeline connection components play a key role in ensuring the safe and efficient transmission of natural gas. As a new type of natural gas pipeline connection method, spliced ​​metal hoses are gradually gaining attention.

[0003] Traditional natural gas pipeline connections often use welding or flange connections. However, the welding process requires professional technicians and equipment, and the welding quality is affected by many factors, such as welding process, operator skill level, etc. Once welding defects occur, it may cause pipeline leakage and cause safety accidents. In addition, the position of the pipeline is fixed after welding connection, which is not convenient for later maintenance and modification. Although flange connection is relatively flexible, the installation process is more complicated and requires multiple bolts for tightening, which takes a long time to install. Moreover, the flange connection is prone to poor sealing, which may also cause natural gas leakage. At the same time, flange connection has more parts and occupies a larger space, which is limited in use in some places with limited space. Metal hose is a flexible pressure-resistant pipe fitting with the advantages of low temperature resistance, good flexibility, light weight and corrosion resistance. It is suitable for transportation from gas filling to gas filling gun in natural gas filling station system.

[0004] The traditional metal hose includes a stainless steel bellows located in the center and a stainless steel mesh sleeve wrapped around the outside of the stainless steel bellows. Most of the existing metal hoses are integrated structures, which makes it inconvenient to make corresponding connections during use. Based on the problems raised in the above article, we propose a spliced ​​metal hose for natural gas pipeline connection. Summary of the invention

[0005] In view of the above-mentioned shortcomings of the prior art, the present invention provides a spliced ​​metal hose for connecting natural gas pipelines, which can effectively solve the problem of inconvenient connection in the prior art.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: The present invention provides a spliced ​​metal hose for connecting natural gas pipelines, comprising a metal hose 1 and a metal hose 2; the ends of the metal hose 1 and the metal hose 2 that are far away from each other are respectively fixedly connected with a connecting sleeve 1 and a connecting sleeve 2, the metal hose 1 and the metal hose 2 are connected via a connecting hose 3, and the ends of the connecting sleeve 1 and the connecting sleeve 2 that are close to each other are provided with a connecting assembly.

[0007] According to the above-mentioned spliced ​​metal hose for connecting natural gas pipelines, the connecting assembly includes an arc-shaped clamping block, which is located on one side of the connecting sleeve one and fixedly connected thereto, and the connecting sleeve two is provided with an arc-shaped groove one on the side close to the connecting sleeve one, and the interior of the connecting sleeve two is provided with an arc-shaped groove two, and the arc-shaped groove two is connected with the arc-shaped groove one, and the length of the arc-shaped groove one matches the arc-shaped clamping block, so that the connecting sleeve two and the connecting sleeve one can be connected, and the operation is convenient, thereby improving the splicing efficiency.

[0008] According to the above-mentioned spliced ​​metal hose for connecting natural gas pipelines, a connecting block is fixedly connected to one side of the connecting sleeve 1 close to the connecting sleeve 2, an arc-shaped rack 1 is fixedly connected to one side of the connecting block, a connecting box is fixedly connected to the outer side of the connecting sleeve 2, a gear 1 is rotatably connected inside the connecting box, and the gear 1 is meshed with the arc-shaped rack 1. During the rotation of the connecting sleeve 1, the arc-shaped rack 1 meshes with the gear 1, thereby utilizing the meshing force to further improve the stability of the connection.

[0009] According to the above-mentioned spliced ​​metal hose for connecting natural gas pipelines, a ratchet is rotatably connected to the top of the connection box, a slider one is slidably connected to the top of the connection box, a pawl is provided on the top of the slider one, the pawl is meshed with the ratchet, a spring is fixedly connected to the inside of the connection box, the spring is fixedly connected to the slider one, the ratchet is fixedly connected to the gear one, and the ratchet rotates along with the gear one during rotation, thereby utilizing the characteristics of the ratchet and the pawl to avoid reversal of the connection sleeve one, thereby further improving the stability of the connection.

[0010] According to the above-mentioned spliced ​​metal hose for connecting natural gas pipelines, both ends of the connecting hose three are fixedly connected with connecting sleeves three, the interiors of the metal hose one and the metal hose two are provided with slide grooves one, the outer side of the connecting hose three is fixedly connected with a limiting block, and the limiting block is slidably connected to the slide groove one, and the connecting hose three can be stretched by the provided slide groove one and the limiting block, thereby extending the lengths of the metal hose one and the metal hose two.

[0011] According to the above-mentioned spliced ​​metal hose for connecting a natural gas pipeline, the internal thread connection of the connecting sleeve three is connected with a limiting bolt, and the limiting bolt contacts or separates from the inner walls of the metal hose one and the metal hose two. The limiting bolt contacts the inner walls of the metal hose one and the metal hose two, thereby limiting the length of the connecting hose three.

[0012] According to the above-mentioned spliced ​​metal hose for connecting natural gas pipelines, a placement box is fixedly connected to the outer side of the metal hose one, a rack two is arranged inside the placement box, a limiting rod is fixedly installed on one side of the connecting sleeve three, a sealing plate is slidably connected to the outer side of the limiting rod, and a gear two is rotatably connected to the inside of the connecting sleeve three, the gear two is fixedly connected to the limiting bolt, and the gear two is meshingly connected to the rack two, and through the cooperation of the provided gear two and the limiting bolt, the limiting bolt can be driven to operate so as to fit the inner walls of the metal hose one and the metal hose two, thereby completing the limitation of the length of the connecting hose three.

[0013] According to the above-mentioned spliced ​​metal hose for connecting natural gas pipelines, an auxiliary groove is arranged between the connecting hose three and the metal hose one, and a through groove is opened inside the connecting sleeve three. The size of the through groove is smaller than the auxiliary groove. The size of the through groove is smaller than the auxiliary groove, which is convenient for the staff to use the rack two to drive the gear two to operate.

[0014] Compared with the known prior art, the technical solution provided by the present invention has the following beneficial effects: 1; through the connection assembly, the arc-shaped clamping block is inserted into the arc-shaped groove one, and then the connection sleeve one is rotated, the size of the arc-shaped groove one matches the arc-shaped clamping block, and the length of the arc-shaped groove two is greater than the arc-shaped clamping block, so that during the rotation process, the arc-shaped clamping block will be clamped in the arc-shaped groove two, so that the connection between the connection sleeve one and the connection sleeve two is stable, and in the process of rotating the connection sleeve one, the arc-shaped rack one rotates accordingly, so that the arc-shaped rack one and the gear one are meshed, and in the absence of external human interference, the arc-shaped rack one and the gear one remain in meshing state, and the arc-shaped rack one and the gear one are used to mesh. The meshing of gear one further improves the connection stability between the connecting sleeve one and the connecting sleeve two, and the ratchet rotates accordingly during the rotation of gear one, thereby further utilizing the characteristics of the ratchet and the pawl to avoid the reversal of the connecting sleeve one, which can further improve the connection stability between the connecting sleeve one and the connecting sleeve two, and during the entire operation, it is only necessary to rotate the connecting sleeve one during the connection process, thereby greatly improving the convenience of connection of the present invention and greatly improving the installation efficiency. When disassembly is required, the slider one is moved to disengage the pawl from the ratchet, thereby reversing the connecting sleeve one to complete the disassembly.

[0015] 2. After the connection is completed, the length between the metal hose 1 and the metal hose 2 can be extended accordingly through the cooperation of the set slide groove 1 and the limit block, and the connection hose 3 can be prevented from falling off through the cooperation of the limit block and the slide groove 1. During use, the rack 2 corresponding to the gear 2 can be used to drive the gear 2, so that the limit bolt contacts the inner walls of the metal hose 1 and the metal hose 2, so that during the adjustment process, the length of the exposed part of the connection hose 3 can be controlled, thereby further improving the convenience and operability of the present invention when used. In the process of using the rack 2 to drive the gear 2 to operate, the rack 2 will contact the sealing plate, so that the sealing plate and the limit rod slide. When the limit bolt contacts the inner walls of the metal hose 1 and the metal hose 2, the size of the through groove is larger than the size of the rack 2. After the rack 2 is pulled out, the sealing plate will be reset under the action of gravity, and the through groove will be sealed to avoid leakage during the transportation of natural gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 is a cross-sectional view of the present invention; Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle; Figure 4 It is a structural schematic diagram of a connecting sleeve of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of point B in the middle; Figure 6 It is a second cross-sectional view of the connecting sleeve of the present invention; Figure 7 It is three sectional views of the connecting sleeve of the present invention.

[0018] Figure numerals: 1. Metal hose 1; 2. Metal hose 2; 3. Connecting hose 3; 4. Connecting sleeve 1; 5. Connecting sleeve 2; 11. Slide 1; 12. Limit block; 31. Auxiliary groove; 32. Connecting sleeve 3; 33. Limit bolt; 34. Sealing plate; 35. Limit rod; 36. Through groove; 39. Gear 2; 41. Connecting block; 42. Arc rack 1; 49. Arc clamping block; 51. Connecting box; 52. Gear 1; 53. Ratchet; 54. Paw; 55. Slider 1; 56. Spring; 57. Arc groove 1; 58. Arc groove 2; 1101. Placement box. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are 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 creative work are within the scope of protection of the present invention.

[0020] The present invention will be further described below with reference to the examples. Figures 1 to 7 A spliced ​​metal hose for connecting a natural gas pipeline comprises a metal hose 1 and a metal hose 2; the ends of the metal hose 1 and the metal hose 2 are respectively fixedly connected with a connecting sleeve 1 and a connecting sleeve 2 5 at the ends away from each other, the metal hose 1 and the metal hose 2 are connected by a connecting hose 3 3, and the ends of the connecting sleeve 1 4 and the connecting sleeve 2 5 close to each other are provided with a connecting assembly, the length of the metal hose 1 and the metal hose 2 can be extended by using the connecting hose 3 3, and the connecting sleeve 1 4 and the connecting sleeve 2 5 can be connected by using the provided connecting assembly, so that the present invention completes the splicing, which is convenient for the staff to splice different lengths to meet different usage requirements, thereby improving the applicability of the present invention.

[0021] like Figure 6 As shown, the connection assembly includes an arc-shaped clamping block 49, which is located on one side of the connection sleeve 1 4 and fixedly connected thereto, and an arc-shaped groove 1 57 is provided on the side of the connection sleeve 2 5 close to the connection sleeve 1 4, and an arc-shaped groove 2 58 is provided inside the connection sleeve 2 5, and the arc-shaped groove 2 58 is connected with the arc-shaped groove 1 57, and the length of the arc-shaped clamping block 49 is matched. Through the coordination of the arc-shaped clamping block 49, the arc-shaped groove 1 57 and the arc-shaped groove 2 58, when in use, the arc-shaped clamping block 49 is inserted into the inside of the arc-shaped groove 1 57, and the connection sleeve 1 4 is rotated, so that the arc-shaped clamping block 49 will enter the inside of the arc-shaped groove 2 58, so that the connection sleeve 2 5 and the connection sleeve 1 4 can be connected, and the operation is convenient, which improves the splicing efficiency. Figure 4 and Figure 5 As shown, a connecting block 41 is fixedly connected to one side of the connecting sleeve 14 near the connecting sleeve 25, an arc-shaped rack 42 is fixedly connected to one side of the connecting block 41, a connecting box 51 is fixedly connected to the outer side of the connecting sleeve 25, a gear 52 is rotatably connected to the inside of the connecting box 51, and the gear 52 is meshed with the arc-shaped rack 42. During the rotation of the connecting sleeve 14, the arc-shaped rack 42 is meshed with the gear 52 and drives the gear 52 to rotate, thereby utilizing the meshing force to further improve the stability of the connection, and the top of the connecting box 51 is rotated to connect. A ratchet 53 is connected, a slider 55 is slidably connected to the top of the connection box 51, a pawl 54 is provided on the top of the slider 55, the pawl 54 is meshed with the ratchet 53, a spring 56 is fixedly connected to the inside of the connection box 51, the spring 56 is fixedly connected to the slider 55, the ratchet 53 is fixedly connected to the gear 52, and the ratchet 53 rotates along with the gear 52 during the rotation, thereby utilizing the characteristic that the ratchet 53 and the pawl 54 can only rotate to one side to avoid the reversal of the connection sleeve 4, thereby further improving the stability of the connection.

[0022] like Figure 3As shown, both ends of the connecting hose 3 3 are fixedly connected with a connecting sleeve 3 32, and a slide groove 11 is provided inside the metal hose 1 and the metal hose 2 2. The outer side of the connecting hose 3 3 is fixedly connected with a limiting block 12, and the limiting block 12 is slidably connected to the slide groove 11. The connecting hose 3 3 can be stretched by the provided slide groove 11 and the limiting block 12, thereby extending the length of the metal hose 1 and the metal hose 2 2, further improving the applicability of the present invention. The internal thread of the connecting sleeve 3 32 is connected with a limiting bolt 33, and the limiting bolt 33 contacts or separates with the inner wall of the metal hose 1 and the metal hose 2 2. The gear 2 39 and the rack 2 can be used to control the limiting bolt 33 to contact or separate with the metal hose 1, and the limiting bolt 33 contacts with the inner wall of the metal hose 1 and the metal hose 2 2, thereby being able to The length of the connecting hose 3 3 is limited, so that the staff can adjust the overall length of the length when using the present invention. The outer side of the metal hose 1 is fixedly connected to a placement box 1101, and a rack 2 is arranged inside the placement box 1101. A limiting rod 35 is fixedly installed on one side of the connecting sleeve 32, and a sealing plate 34 is slidably connected to the outer side of the limiting rod 35. The interior of the connecting sleeve 32 is rotatably connected to a gear 2 39, and the gear 2 39 is fixedly connected to the limiting bolt 33. The gear 2 39 is meshed with the rack 2. The limiting bolt 33 can be driven to operate by the cooperation of the set gear 2 39 and the limiting bolt 33. The rack 2 inside the placement box 1101 can be used to control the operation of the gear 2 39, so that it fits with the inner walls of the metal hose 1 and the metal hose 2, thereby completing the limitation of the length of the connecting hose 3 3. An auxiliary groove 31 is provided between the connecting hose 3 3 and the metal hose 1 , and a through groove 36 is provided inside the connecting sleeve 32 . The size of the through groove 36 is smaller than the auxiliary groove 31 , which makes it convenient for the staff to use the rack 2 to drive the gear 2 39 to operate.

[0023] The working principle of the present invention is as follows: insert the arc-shaped clamping block 49 into the arc-shaped groove 1 57, and then rotate the connecting sleeve 1 4. The size of the arc-shaped groove 1 57 matches the arc-shaped clamping block 49, and the length of the arc-shaped groove 2 58 is greater than the arc-shaped clamping block 49. Therefore, during the rotation process, the arc-shaped clamping block 49 will be clamped into the inside of the arc-shaped groove 2 58, so that the connection between the connecting sleeve 1 4 and the connecting sleeve 2 5 is stable, and in the process of rotating the connecting sleeve 1 4, the arc-shaped rack 1 42 rotates accordingly, so that the arc-shaped rack 1 42 and the gear 1 52 are meshed. In the absence of external human interference, the arc-shaped rack 1 42 and the gear 1 52 remain in meshing state, so as to utilize the meshing of the arc-shaped rack 1 42 and the gear 1 52 to perform The connection stability between the connecting sleeve 1 4 and the connecting sleeve 2 5 is improved in one step, and the ratchet wheel 53 rotates accordingly during the rotation of the gear 1 52, thereby further utilizing the characteristics of the ratchet wheel 53 and the pawl 54 to avoid the reversal of the connecting sleeve 1 4, and can further improve the connection stability between the connecting sleeve 1 4 and the connecting sleeve 2 5. In the whole operation process, it is only necessary to rotate the connecting sleeve 1 4 during the connection process, thereby greatly improving the convenience of the connection of the present invention and the installation efficiency. When disassembly is required, the slider 1 55 is moved to disengage the pawl 54 from the ratchet wheel 53, thereby reversing the connecting sleeve 1 4 to complete the disassembly. After the connection is completed, the sliding groove 11 and the limit block 12 are arranged. By cooperating with each other, the length between the metal hose 1 and the metal hose 2 can be correspondingly extended, and the cooperation between the limit block 12 and the slide groove 1 11 can avoid the connection hose 3 3 from falling off. During use, the staff uses the rack 2 corresponding to the gear 2 39 to pass through the inside of the auxiliary groove 31, and makes the rack 2 pass through the through groove 36, and uses the rack 2 to drive the gear 2 39, so that the limit bolt 33 is rotated, so that the limit bolt 33 contacts the inner wall of the metal hose 1 and the metal hose 2 2, so that in the process of adjustment, the length of the exposed part of the connection hose 3 3 can be controlled, thereby further improving the convenience and operability of the present invention when used. During the operation of rack two driving gear two 39, rack two will contact sealing plate 34, so that sealing plate 34 and limiting rod 35 will slide. When limiting bolt 33 contacts the inner wall of metal hose one 1 and metal hose two 2, the size of through groove 36 is larger than that of rack two. After limiting bolt 33 contacts the inner wall of metal hose one 1, rack two can be moved to one side and pulled out. After rack two is pulled out, sealing plate 34 will be reset under the action of gravity and through groove 36 will be sealed. In order to further improve the sealing performance, the gap between auxiliary groove 31 and metal hose one 1 and connecting hose three 3 can be filled with sealing non-slip cushion to avoid leakage during the transportation of natural gas.

[0024] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A spliced ​​metal hose for natural gas pipeline connection, characterized in that: The invention comprises a metal hose 1 (1) and a metal hose 2 (2); the ends of the metal hose 1 (1) and the metal hose 2 (2) which are far from each other are respectively fixedly connected with a connecting sleeve 1 (4) and a connecting sleeve 2 (5); the metal hose 1 (1) and the metal hose 2 (2) are connected via a connecting hose 3 (3); and the ends of the connecting sleeve 1 (4) and the connecting sleeve 2 (5) which are close to each other are provided with a connecting assembly.

2. A spliced ​​metal hose for natural gas pipeline connection according to claim 1, characterized in that: The connecting assembly comprises an arc-shaped clamping block (49), the arc-shaped clamping block (49) being located on one side of the connecting sleeve 1 (4) and fixedly connected thereto, the connecting sleeve 2 (5) being provided with an arc-shaped groove 1 (57) on one side close to the connecting sleeve 1 (4), the connecting sleeve 2 (5) being provided with an arc-shaped groove 2 (58) inside, the arc-shaped groove 2 (58) being connected to the arc-shaped groove 1 (57), and the length of the arc-shaped groove 1 (57) being matched with that of the arc-shaped clamping block (49).

3. A spliced ​​metal hose for natural gas pipeline connection according to claim 2, characterized in that: A connecting block (41) is fixedly connected to one side of the connecting sleeve 1 (4) close to the connecting sleeve 2 (5); an arc-shaped rack 1 (42) is fixedly connected to one side of the connecting block (41); a connecting box (51) is fixedly connected to the outside of the connecting sleeve 2 (5); a gear 1 (52) is rotatably connected to the inside of the connecting box (51); the gear 1 (52) is meshingly connected to the arc-shaped rack 1 (42).

4. A spliced ​​metal hose for natural gas pipeline connection according to claim 3, characterized in that: The top of the connection box (51) is rotatably connected to a ratchet (53), the top of the connection box (51) is slidably connected to a slider (55), a pawl (54) is provided on the top of the slider (55), the pawl (54) is meshed with the ratchet (53), a spring (56) is fixedly connected inside the connection box (51), the spring (56) is fixedly connected to the slider (55), and the ratchet (53) is fixedly connected to the gear (52).

5. The spliced ​​metal hose for natural gas pipeline connection according to claim 1, characterized in that: Both ends of the connecting hose three (3) are fixedly connected to connecting sleeves three (32), the metal hose one (1) and the metal hose two (2) are provided with a slide groove one (11) inside, and the outer side of the connecting hose three (3) is fixedly connected to a limit block (12), and the limit block (12) is slidably connected to the slide groove one (11).

6. A spliced ​​metal hose for natural gas pipeline connection according to claim 5, characterized in that: The inner thread of the connecting sleeve three (32) is connected to a limiting bolt (33), and the limiting bolt (33) is in contact with or separated from the inner wall of the metal hose one (1) and the metal hose two (2).

7. A spliced ​​metal hose for natural gas pipeline connection according to claim 6, characterized in that: The outer side of the metal hose 1 (1) is fixedly connected to a placement box (1101), and a rack 2 is arranged inside the placement box (1101). A limit rod (35) is fixedly installed on one side of the connecting sleeve 3 (32), and a sealing plate (34) is slidably connected to the outer side of the limit rod (35). The interior of the connecting sleeve 3 (32) is rotatably connected to a gear 2 (39), and the gear 2 (39) is fixedly connected to a limit bolt (33), and the gear 2 (39) is meshingly connected to the rack 2.

8. A spliced ​​metal hose for natural gas pipeline connection according to claim 7, characterized in that: An auxiliary groove (31) is provided between the connecting hose three (3) and the metal hose one (1), and a through groove (36) is provided inside the connecting sleeve three (32), wherein the size of the through groove (36) is smaller than that of the auxiliary groove (31).

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