Natural gas pipeline connecting valve

Abstract

The utility model belongs to the field of valves, particularly relates to a natural gas pipeline connecting valve, and aims to solve the problems that the existing single-layer seal affects the sealing effect and has no supporting and stabilizing structure, the following scheme is provided: the natural gas pipeline connecting valve comprises a connecting valve main body; the number of the threaded connectors is two, and the two threaded connectors communicate with the openings in the two sides of the valve body correspondingly. The natural gas conveying pipe is connected to the surface of the threaded connector in a threaded mode, the joint between the threaded connector and the natural gas conveying pipe can be sealed for the first time, a gap between the threaded connector and the natural gas conveying pipe is avoided, and the sealing assembly can seal the threaded connector and the outer side of the natural gas conveying pipe; and the connecting valve body can be stably supported through the mounting plate, the transmission frame, the sliding sleeve and the supporting strip, a handle of the connecting valve body can be conveniently rotated, and the connecting valve body can be supported.

Description

Technical Field

[0001] The utility model relates to the technical field of valves, in particular to a natural gas pipeline connecting valve. Background Art

[0002] During the transportation of natural gas, valves need to be installed on the pipeline to control the transportation of natural gas. Chinese patent document with publication number CN218294844U discloses a natural gas pipeline connecting valve.

[0003] However, the above technical solution only uses a single-layer seal between the natural gas pipeline and the connecting valve. Once the single-layer seal is damaged, leakage will occur, which will affect the sealing effect. The valve is mostly fixed on the natural gas pipeline and has no other fulcrum, which affects stability. Utility Model Content

[0004] The purpose of the utility model is to solve the shortcomings of the prior art, such as single-layer sealing, which affects the sealing effect, and lacks a supporting and stable structure, and to propose a natural gas pipeline connecting valve.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A natural gas pipeline connecting valve, comprising

[0007] Connect the valve body;

[0008] There are two threaded connectors, which are respectively connected to the openings on both sides of the valve body;

[0009] A natural gas transmission pipe, the natural gas transmission pipe being threadedly connected to the surface of a threaded connector;

[0010] Main sealing ring, which is bonded to the inner side of the natural gas transmission pipe;

[0011] A sealing assembly, the sealing assembly being threadedly connected to the threaded connector;

[0012] The mounting mechanism includes a mounting plate, a transmission frame, a sliding sleeve and a support bar. The side of the mounting plate is welded to the side of the transmission frame. Two sliding sleeves and two support bars are provided. The sliding sleeve is welded to the transmission frame. The inside of the sliding sleeve is slidably connected to the surface of the support bar. The support bar is bolted to the valve body.

[0013] The adjusting mechanism is connected to the support bar. The adjusting mechanism is used to drive the connecting valve body to move. The connection between the threaded connector and the natural gas transmission pipe can be sealed for the first time through the main sealing ring to avoid gaps between the threaded connector and the natural gas transmission pipe. The sealing assembly can seal the threaded connector and the outside of the natural gas transmission pipe to enhance the sealing and avoid leakage. The connecting valve body can be supported and stabilized by the mounting plate, transmission frame, sliding sleeve and support bar, which makes it convenient to rotate the handle of the connecting valve body, and the connecting valve body can be supported.

[0014] As a preferred solution of the utility model, the adjustment mechanism includes a driving gear, a passive gear and a screw rod. There are two passive gears and two screw rods. The teeth of the two passive gears are engaged with the teeth of the driving gear. The passive gear is keyed to the screw rod, and the screw rod is threadedly connected to the support bar, which can drive the driving gear to rotate. The driving gear can drive the two passive gears to rotate, and the passive gear can drive the screw rod to rotate. The screw rod can use the thread to drive the support bar to slide inside the sleeve.

[0015] As a preferred solution of the present invention, an adjusting wheel is keyed to the axis of the driving gear, the driving gear is rotatably connected to the transmission frame, the driven gear is rotatably connected to the transmission frame, the screw rod is rotatably sleeved with the sliding sleeve, and the adjusting wheel can drive the driving gear to rotate, facilitating the rotation of the driving gear. The driving gear is rotatably arranged with the transmission frame through a bearing to ensure the smooth rotation of the driving gear, and the driven gear is rotatably arranged with the transmission frame through a bearing.

[0016] As a preferred solution of the present invention, the sealing assembly includes a sealing wheel and a secondary sealing ring. The hole of the sealing wheel is threadedly connected to the surface of the threaded connector, and the inner side of the sealing wheel is bonded to the surface of the secondary sealing ring. The sealing wheel can use the secondary sealing ring to seal the gap between the threaded connector and the natural gas transmission pipe.

[0017] As a preferred solution of the present invention, the surface of the natural gas transmission pipe is integrally processed with an octagonal ring, and the main sealing ring is located inside the octagonal ring. The octagonal ring can rotate the natural gas transmission pipe, making it convenient for the natural gas transmission pipe to be rotated and fixed on the threaded connector.

[0018] As a preferred solution of the present invention, bolt holes are provided on all four sides of the surface of the mounting plate, the top and bottom of the transmission frame are both open structures, and the bolt holes of the mounting plate are used to install and fix the mounting plate.

[0019] Beneficial effects:

[0020] 1. Connect the valve body to the natural gas transmission pipe through a threaded connector, perform preliminary sealing with the main sealing ring, and then use the sealing assembly to seal again to enhance the sealing effect;

[0021] 2. The mounting plate supports and stabilizes the sliding sleeve through the transmission frame, and the sliding sleeve can support and stabilize the connected valve body through the support bar, giving the connected valve body a supporting force;

[0022] In the utility model: the main sealing ring can be used to seal the connection between the threaded connector and the natural gas transmission pipe for the first time, avoiding the occurrence of gaps between the threaded connector and the natural gas transmission pipe. The sealing component can seal the threaded connector and the outer side of the natural gas transmission pipe, thereby enhancing the sealing performance and avoiding leakage. The mounting plate, transmission frame, sliding sleeve and support bar can support and stabilize the connecting valve body, facilitate the rotation of the handle of the connecting valve body, and the connecting valve body can be supported. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is an overall three-dimensional diagram of the utility model;

[0024] Figure 2 This is a three-dimensional diagram of the transmission frame of the present utility model;

[0025] Figure 3 This is a three-dimensional diagram of the mounting plate of the utility model;

[0026] Figure 4 This is a three-dimensional diagram of the natural gas transmission pipe of the present utility model.

[0027] In the figure: 1. Connecting valve body; 2. Threaded connector; 3. Natural gas transmission pipe; 4. Octagonal ring; 5. Main sealing ring; 6. Sealing wheel; 7. Secondary sealing ring; 8. Mounting plate; 9. Transmission frame; 10. Sleeve; 11. Support bar; 12. Adjusting wheel; 13. Driving gear; 14. Passive gear; 15. Screw. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Example 1

[0030] Reference Figures 1-4 , a natural gas pipeline connecting valve, comprising

[0031] Connect valve body 1;

[0032] There are two threaded connectors 2, which are respectively connected to the openings on both sides of the valve body 1;

[0033] A natural gas transmission pipe 3, the natural gas transmission pipe 3 is threadedly connected to the surface of the threaded connector 2;

[0034] Main sealing ring 5, which is bonded to the inner side of the natural gas transmission pipe 3;

[0035] A sealing assembly, the sealing assembly being threadedly connected to the threaded connector 2;

[0036] The mounting mechanism includes a mounting plate 8, a transmission frame 9, a sliding sleeve 10 and a support bar 11. The side of the mounting plate 8 is welded to the side of the transmission frame 9. Two sliding sleeves 10 and two support bars 11 are provided. The sliding sleeve 10 is welded to the transmission frame 9. The interior of the sliding sleeve 10 is slidably connected to the surface of the support bar 11. The support bar 11 is bolted to the valve body 1;

[0037] The regulating mechanism is connected to the supporting bar 11 and is used to drive the connecting valve body 1 to move.

[0038] By means of the above structure: the main sealing ring 5 can be used to seal the connection between the threaded connector 2 and the natural gas transmission pipe 3 for the first time to avoid a gap between the threaded connector 2 and the natural gas transmission pipe 3. The sealing assembly can seal the outer sides of the threaded connector 2 and the natural gas transmission pipe 3 to enhance the sealing performance and avoid leakage. The mounting plate 8, the transmission frame 9, the sliding sleeve 10 and the support bar 11 can support and stabilize the connecting valve body 1, facilitate the rotation of the handle of the connecting valve body 1, and the connecting valve body 1 can be supported.

[0039] See also Figure 2 The adjusting mechanism includes a driving gear 13, a passive gear 14 and a screw rod 15. There are two passive gears 14 and two screw rods 15. The teeth of the two passive gears 14 are engaged with the teeth of the driving gear 13. The passive gear 14 is keyed to the screw rod 15. The screw rod 15 is threadedly connected to the support bar 11, which can drive the driving gear 13 to rotate. The driving gear 13 can drive the two passive gears 14 to rotate. The passive gear 14 can drive the screw rod 15 to rotate. The screw rod 15 can use the thread to drive the support bar 11 to slide inside the sliding sleeve 10.

[0040] See also Figure 2 The axis of the driving gear 13 is keyed to an adjusting wheel 12, the driving gear 13 is rotatably connected to the transmission frame 9, the driven gear 14 is rotatably connected to the transmission frame 9, the screw rod 15 is rotatably sleeved with the sleeve 10, and the adjusting wheel 12 can drive the driving gear 13 to rotate, facilitating the rotation of the driving gear 13. The driving gear 13 is rotatably arranged with the transmission frame 9 through a bearing to ensure the smooth rotation of the driving gear 13, and the driven gear 14 is rotatably arranged with the transmission frame 9 through a bearing.

[0041] See also Figure 4The sealing assembly includes a sealing wheel 6 and a secondary sealing ring 7. The hole of the sealing wheel 6 is threadedly connected to the surface of the threaded connector 2. The inner side of the sealing wheel 6 is bonded to the surface of the secondary sealing ring 7. The sealing wheel 6 can seal the gap between the threaded connector 2 and the natural gas transmission pipe 3 with the secondary sealing ring 7.

[0042] See also Figure 4 The surface of the natural gas transmission pipe 3 is integrally processed with an octagonal ring 4, and the main sealing ring 5 is located on the inner side of the octagonal ring 4. The octagonal ring 4 can rotate the natural gas transmission pipe 3, making it convenient for the natural gas transmission pipe 3 to be rotated and fixed on the threaded connector 2.

[0043] See also Figure 3 Bolt holes are provided around the surface of the mounting plate 8, and the top and bottom of the transmission frame 9 are both open structures. The bolt holes of the mounting plate 8 are used to install and fix the mounting plate 8.

[0044] Example 2

[0045] The difference between this embodiment and the first embodiment is that the adjusting wheel 12, the driving gear 13 and the passive gear 14 are replaced by a driving wheel, a transmission belt connected to the internal transmission of the driving wheel and a passive wheel connected to the internal transmission of the transmission belt, the passive wheel is connected to the screw rod 15, the driving wheel can drive the passive wheel to rotate through the transmission belt, and the passive wheel can drive the screw rod 15 to rotate, but the transmission stability between the driving wheel, the transmission belt and the passive wheel is poor. Therefore, the present application is preferably an adjusting wheel 12, a driving gear 13 and a passive gear 14.

[0046] The working principle of the present utility model is as follows: the connecting valve body 1 is installed in the predetermined position through the mounting plate 8, and the adjusting wheel 12 inside the transmission frame 9 is rotated. The adjusting wheel 12 can drive the active gear 13 to rotate, and the active gear 13 can drive the two passive gears 14 to rotate. The passive gear 14 can drive the screw rod 15 to rotate, and the screw rod 15 can use the thread to drive the support bar 11 to slide inside the sliding sleeve 10. The support bar 11 is slidingly arranged with the sliding sleeve 10 through the slide rail and guides each other. The mounting plate 8 can support the sliding sleeve 10 through the transmission frame 9, and the sliding sleeve 10 can support and stabilize the connecting valve body 1 through the support bar 11. The main sealing ring 5 is placed in the internal threaded mouth of the natural gas transmission pipe 3, and then threadedly connected to the threaded connector 2. In order to tighten, the octagonal ring 4 is rotated with a wrench, and the octagonal ring 4 can drive the natural gas transmission pipe 3 to rotate, so that the natural gas transmission pipe 3 is fixed on the threaded connector 2. After fixing, the sealing wheel 6 is rotated, and the sealing wheel 6 can drive the secondary sealing ring 7 to fit tightly against the natural gas transmission pipe 3 for sealing.

[0047] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A natural gas pipeline connecting valve, characterized in that: include Connect the valve body (1); A threaded connector (2), wherein two threaded connectors (2) are provided, and the two threaded connectors (2) are respectively connected to openings on both sides of the connecting valve body (1); A natural gas transmission pipe (3), the natural gas transmission pipe (3) being threadedly connected to the surface of the threaded connector (2); A main sealing ring (5), the main sealing ring (5) is bonded to the inner side of the natural gas transmission pipe (3); A sealing assembly, the sealing assembly being threadedly connected to the threaded connector (2); The mounting mechanism comprises a mounting plate (8), a transmission frame (9), a sliding sleeve (10) and a support bar (11); the side surface of the mounting plate (8) is welded to the side surface of the transmission frame (9); two sliding sleeves (10) and two support bars (11) are provided; the sliding sleeve (10) is welded to the transmission frame (9); the interior of the sliding sleeve (10) is slidably connected to the surface of the support bar (11); and the support bar (11) is bolted to the valve body (1); An adjusting mechanism is connected to the supporting bar (11), and the adjusting mechanism is used to drive the connecting valve body (1) to move.

2. A natural gas pipeline connecting valve according to claim 1, characterized in that: The adjustment mechanism comprises a driving gear (13), a driven gear (14) and a screw rod (15). Two driven gears (14) and two screw rods (15) are provided. The teeth of the two driven gears (14) are meshed with the teeth of the driving gear (13). The driven gear (14) and the screw rod (15) are key-connected. The screw rod (15) is threadedly connected to the support bar (11).

3. A natural gas pipeline connecting valve according to claim 2, characterized in that: The axis of the driving gear (13) is key-connected with an adjusting wheel (12). The driving gear (13) is rotationally connected to the transmission frame (9), the driven gear (14) is rotationally connected to the transmission frame (9), and the screw rod (15) is rotationally sleeved with the sliding sleeve (10).

4. A natural gas pipeline connecting valve according to claim 1, characterized in that: The sealing assembly comprises a sealing wheel (6) and a secondary sealing ring (7); the hole of the sealing wheel (6) is threadedly connected to the surface of the threaded connector (2); and the inner side of the sealing wheel (6) is bonded to the surface of the secondary sealing ring (7).

5. A natural gas pipeline connecting valve according to claim 1, characterized in that: An octagonal ring (4) is integrally processed on the surface of the natural gas transmission pipe (3), and the main sealing ring (5) is located on the inner side of the octagonal ring (4).

6. A natural gas pipeline connecting valve according to claim 1, characterized in that: Bolt holes are provided on all four sides of the surface of the mounting plate (8), and the top and bottom of the transmission frame (9) are both open structures.

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